Wednesday, August 26, 2020

Genetic, Biological and Environmental Influences on School-Age Crack Research Paper

Hereditary, Biological and Environmental Influences on School-Age Crack Babies in Dealing with Multiple Stimuli and Forming Close - Research Paper Example Exploration has demonstrated that right around one million babies conceived in the USA have been at one time presented to one of the numerous unlawful medications while in utero. The social impacts related with these newborn children or split infants when regularly present themselves plainly when these kids arrive at period of going to class. Much of the time, the incitement procedure turns out to be extremely sporadic and such kids are confronted with troubles of managing these different boosts and have issues with regards to having close connections with individuals around them such an instructors and different understudies (McNichol and Tash, 2001). Managing numerous upgrades and framing close connections Research has indicated that we have a perpetual formative, neurological and conduct results which could be legitimately credited to the presentation on medicate use by guardians. One outstanding thing has been that guardians and even scholastic organizations are still very ill-eq uipped in managing this issue successfully (McNichol and Tash, 2001). Given nature in which such kids are presented to at an early age, it gets hard for them to incorporate completely with the general public around them. Children do acquire certain hereditary segments from their folks. The medication use meddles with a child’s improvement. ... Close perceptions made on these youngsters have demonstrated that they are ordinarily steadily pulled back from their condition and appreciate individual space more than keeping organization of others. It has additionally been noticed that these split infants are typically inclined to some abrupt snaps and scenes of savage conduct when contrasted with other kids. These have been credited to the way that their folks presented them to drugs in their pre-birth stage. Examination has demonstrated that newborn children presented to cocaine during the pre-birth stage display expanded danger of having engine brokenness (Schneider and Chasnoff, 1992). Additionally, the danger of having intra-venicular hemorrhages is expanded. Questions despite everything proliferate concerning the specific impact of hemorrhages with regards to the improvement procedure. The introduction has been noted to significantly influence the focal sensory system making variations from the norm these kids (Doberczak, 1 988). Fulroth, Phillips and Durand (1989) noticed that various children who have been presented to cocaine in their pre-birth stages give indications of withdrawal from the general public or the earth around them. Be that as it may, a few specialists disputed this basing their contention to the way that the span after birth matters and that the youngsters ordinarily standardize after the ages of 1 to 2 years. In any case, 30 to 40% of those kids contemplated demonstrated that they encountered language advancement issues which were aggravated by consideration issues that experienced their fourth year of development (Schneider and Chasnoff, 1992). Different investigations have additionally demonstrated that a significant number of the youngsters who have been a result of medication misuse related moms have various psychological and conduct challenges. This has been credited to the natural impacts. Different investigations such

Saturday, August 22, 2020

Acquired diabetes insipidus Essay Example For Students

Procured diabetes insipidus Essay Procured NDI Procured NDI is the outcome of a few conditions (Table 2) that are portrayed by an expanded water yield and decreased pee osmolality, regardless of raised degrees of AVP. In a large number of these conditions, the kidney can't deal with water because of a disabled responsiveness to vasopressin. As talked about beneath, various rodent models with NDI have been assessed, and normal for everything is a decreased articulation of AQP2 in the main cells of the gathering conduits. In any case, as is talked about, the level of AQP2 downregulation just as the intracellular confinement of the protein contrasts fundamentally among the different conditions, recommending that various systems are answerable for AQP2 dysregulation in the different models. Notwithstanding DI, a couple of different genuine conditions are related with decreased AQP2 levels and urinary concentrating deserts (see Table 2). 1. Lithium-instigated NDI Lithium organization is an extremely normal treatment of hyper burdensome ailment. It is evaluated that 1 out of 1,000 of the populace get lithium, and around 20-30% of these create genuine symptoms including polyuria (16, 39) basically because of a vasopressin-safe urinary-concentrating imperfection, i.e., NDI. We inspected the impact of oral lithium treatment of rodents for 25 days. AQP2 and AQP3 levels were logically decreased to 5% of levels in charge rodents following 25 days of lithium treatment (129, 149). The downregulation of AQP2 articulation was resembled by a dynamic improvement of serious polyuria. With serum lithium levels in the restorative range, rodents created a day by day pee yield that coordinated their own weight (149). Likewise, quantitative immunoelectron microscopy of AQP2 marking in the IMCD head cells demonstrated that there was a decrease in AQP2 in the apical plasma film, just as in the basolateral plasma layer and intracellular vesicles. Accordingly decrease of AQP2 in both the apical and the basolateral plasma film may partake in the general diminished water reabsorption (149). The diminished AQP3 articulation was likewise affirmed by immunocytochemistry (129). Along these lines downregulation of both AQP2 and AQP3 seems to assume a critical job in the advancement of lithium-instigated polyuria. The decrease in AQP2 (and AQP3) articulation might be brought about by a lithium-initiated disability in the creation of cAMP in gathering channel head cells (38, 39), showing that hindrance of cAMP creation may to a limited extent be answerable for the decrease in AQP2 articulation just as the restraint of focusing to the plasma film in light of lithium treatment. This is reliable with the nearness of a cAMP-responsive component in the 5-untranslated locale of the AQP2 quality (92, 156) and with the ongoing showing that mice with characteristically low cAMP levels have low articulation of AQP2 (DI +/+). There was an exceptionally moderate recuperation in AQP2 articulation and reclamation of urinary focus after discontinuance of lithium treatment (149) predictable with clinical discoveries. In any case, treatment of lithium-diuretic rodents with hig h portions of the particular V2-receptor agonist dDAVP had the option to cause productive conveyance of AQP2 to the apical plasma film (a more noteworthy division of all out AQP2 was found in the layer than found in charge creatures), however there was just a humble increment in AQP2 articulation comparative with creatures treated with lithium alone. Despite what might be expected, thirsting of the rodents for 2 days brought about an a lot bigger increment in AQP2 protein levels, however small focusing to the apical plasma film (a ton of AQP2 was found in intracellular areas, I. e., intracellular vesicles). Thus, this examination indicated that thirsting was a more powerful upgrade for AQP2 articulation than dDAVP organization in the current model and gave proof to the nearness of a vasopressin-free guideline of AQP2 articulation levels. The presence of such a sign transduction pathway has as of late picked up help (58). Like the moderate recuperation of urinary fixation powerlessness found in patients who have been on lithium treatment, lithium-treated rodents likewise demonstrated a moderate recuperation. The concealment of AQP2 levels was parallelled by a diligent urinary concentrating deformity after expulsion of lithium from the eating regimen (149). .u8b361a160348b55af9897e4cb0cd7e8d , .u8b361a160348b55af9897e4cb0cd7e8d .postImageUrl , .u8b361a160348b55af9897e4cb0cd7e8d .focused content zone { min-stature: 80px; position: relative; } .u8b361a160348b55af9897e4cb0cd7e8d , .u8b361a160348b55af9897e4cb0cd7e8d:hover , .u8b361a160348b55af9897e4cb0cd7e8d:visited , .u8b361a160348b55af9897e4cb0cd7e8d:active { border:0!important; } .u8b361a160348b55af9897e4cb0cd7e8d .clearfix:after { content: ; show: table; clear: both; } .u8b361a160348b55af9897e4cb0cd7e8d { show: square; progress: foundation shading 250ms; webkit-change: foundation shading 250ms; width: 100%; obscurity: 1; progress: murkiness 250ms; webkit-change: mistiness 250ms; foundation shading: #95A5A6; } .u8b361a160348b55af9897e4cb0cd7e8d:active , .u8b361a160348b55af9897e4cb0cd7e8d:hover { haziness: 1; progress: darkness 250ms; webkit-change: darkness 250ms; foundation shading: #2C3E50; } .u8b361a160348b55af9897e4cb0cd7e8d .focused content region { width: 100%; position: relative; } .u8b361a160348b55af9897e4cb0cd7e8d .ctaText { fringe base: 0 strong #fff; shading: #2980B9; text dimension: 16px; textual style weight: striking; edge: 0; cushioning: 0; content embellishment: underline; } .u8b361a160348b55af9897e4cb0cd7e8d .postTitle { shading: #FFFFFF; text dimension: 16px; text style weight: 600; edge: 0; cushioning: 0; width: 100%; } .u8b361a160348b55af9897e4cb0cd7e8d .ctaButton { foundation shading: #7F8C8D!important; shading: #2980B9; outskirt: none; fringe span: 3px; box-shadow: none; text dimension: 14px; text style weight: intense; line-tallness: 26px; moz-outskirt sweep: 3px; content adjust: focus; content adornment: none; content shadow: none; width: 80px; min-stature: 80px; foundation: url(https://artscolumbia.org/wp-content/modules/intelly-related-posts/resources/pictures/straightforward arrow.png)no-rehash; position: outright; right: 0; top: 0; } .u8b361a160348b55af9897e4cb0cd7e8d:hover .ctaButton { foundation shading: #34495E!important; } .u8b361a16 0348b55af9897e4cb0cd7e8d .focused content { show: table; stature: 80px; cushioning left: 18px; top: 0; } .u8b361a160348b55af9897e4cb0cd7e8d-content { show: table-cell; edge: 0; cushioning: 0; cushioning right: 108px; position: relative; vertical-adjust: center; width: 100%; } .u8b361a160348b55af9897e4cb0cd7e8d:after { content: ; show: square; clear: both; } READ: Importance Of Friendship Essay 2. Electrolyte aggravations related with NDI It is realized that both hypokalemia and hypercalcemia, clinically significant electrolyte variations from the norm, are related with polyuria because of a vasopressin-safe urinary concentrating imperfection. Be that as it may, as of late, in any event part of the fundamental atomic imperfections associated with the improvement .

Sunday, August 16, 2020

From Rags to Riches A Financial History of the NFL

From Rags to Riches A Financial History of the NFL From Rags to Riches: A Financial History of the NFL From Rags to Riches: A Financial History of the NFLFrom a group of four rickety Midwestern football teams to a $14 billion-a-year financial juggernaut, The NFL has come a long way since it was founded in 1920.With the Super Bowl less than two weeks away, we thought it would be a good time to look back at the financial side of the NFL’s almost century-long history. Turns out that before they struck it big on TV, the National Football League was anything but a sure bet. The NFL’s early years saw financial instability and high turnover.If you had told the founders of the NFL that one day the league would be a financial juggernautraking in $14 billion a year and countingâ€"they’d have been surprised, to say the least. When the NFL was formed in 1920 in an auto showroom in Canton, Ohio, it was nothing more than four Ohio-based football teams banding together to make things a little easier for themselves.Those original four teams were the Akron Pros, the Canton Bulldogs, the Clevelan d Indians, and the Dayton Triangles. And when the American Professional Football Association (as it was then known) played its first season later that year, those four teams were joined by ten others, all of them based in the Midwest and almost all of them from small to mid-sized towns like Muncie and Rock Island.Only two of those teams are still with us today. The Decatur Staleys later moved to Chicago and became the Bears, while the Racine Cardinals eventually ended up in Arizona after long stops in Chicago and St. Louis. The Green Bay Packers joined the league in 1921. The following year, the league officially changed its name to the NFL.Those early years were rough going from a financial perspective. Making money from professional football games wasn’t exactly easy, and most of the teams had payrolls held together with spit and rubber bands. As such, teams dropped in and out of the league or outright folded with astonishing regularity. The NFL roster fluctuated year to year wi th a high of 22 teams; it wasn’t until 1936 that league roster saw zero turnover from the previous season.Moving east improved the NFL’s prospects, but baseball and college football  still ruled.After years of instability, the league decided to install some quality control. In 1927, they restricted their membership to twelve teams, all of whom were (relatively) financially stable. Not all of those franchises would survive, but the ones that replaced them were in larger, Eastern cities like Boston, New York, and New York. With the exception of Green Bay, the league’s small-town Midwestern origins were being left behind in favor of the bustling eastern seaboard.Green Bay, by the way, is actually a publicly owned non-profit corporation. Instead of a single owner, they issue “shares” in the team, which are owned by thousands upon thousands of loyal fans. If you’re wondering how they managed to stay in Green Bay all these years, that’s why. Not an Al Davis or Art Modell in sight. (Okay, league-wide revenue-sharing has also helped, but we haven’t gotten to that part yet.)This Eastern migration did help the early NFL draw in more revenue and gain more financial stability. Still, even as the league made slight gains throughout the 1930s, it still struggled, both financially and culturally.One of the biggest problems was the fact that it was completely overshadowed by the college game. Many college football stars saw joining the NFL as a step down from the game they’d played in school. And without high enough salaries to overcome those concerns, many of those same stars choose jobs in regular industries over playing football professionally.World War II saw many NFL players serve overseas, which meant that some teams temporarily merged until they returned. Once the war was over, the national economic boom of the 1950’s lifted the NFL’s prospects as well. Still, it remained a distant second (maybe even third or fourth) next to America’s real pasti me: baseball. As the 1960s dawned it seemed like the NFL was doomed to be a cultural and financial also-ran.The modern NFL is born, all thanks to one man (and millions of TV sets). Enter Pete Rozelle. When the NFL commissioner Bert Bell died in 1959 of a heart attack, the 33 -year-old Los Angeles Rams executive was elected commissioner early the following yearâ€"though only after a whopping 23 ballots. Rozelle understood one thing above all else: The future of football didn’t lie in gate receipts (i.e. money from ticket sales to live games). No, the future of the NFL lay in TV.This might seem like a “no duh” kind of revelation nowadays, but back then it was pretty revolutionary. It was something that the NFL’s main competition, the American Football League (AFL) understood as well. In 1960, the AFL negotiated a two-year contract with ABC worth under $2 million annually to broadcast its games.NFL owners, on the other hand, were skeptical. After all, tickets were their main so urce of revenue. How were they supposed to make money by broadcasting games on TV, which meant that people no longer had to buy tickets in order to see their favorite teams play? And besides, wouldn’t TV money end up turning the big-market teams like New York and Chicago into financial powerhouses, making it impossible for small-market teams like Green Bay to catch up?As it turns out, the AFL also had a slightly revolutionary solution to this problem: Taking the revenue from that TV contract and sharing it equally between all its teams. This promoted financial stability and gave every one of its teams a real chance to succeed. At the very least, it ensured that every team started the year with money in the bank. Revenue-sharing was such a good idea, in fact, that Rozelle wanted to steal it wholesale for the NFL.After the moving the NFL’s headquarters from the tiny Pennsylvania town of Bala-Cynwyd all the way to New York City’s Rockefeller Center, Rozelle set to work negotiatin g the NFL’s new TV deal. What he came away with was a two-year deal with CBS to broadcast every game of the NFL’s 1961 and 1962 seasons. The total price tag? $9.3 million  split evenly between the league’s 14 teams.Here’s what happened next: The CBS deal got blocked in court under the Sherman Anti-Trust Act. Undeterred, Rozelle started lobbying Congress and the Kennedy administration to get an exemption. After only three months, the Sports Broadcasting Act was passed and signed into law by Kennedy himself. The new law exempted professional football, baseball, basketball, and hockey leagues from antitrust regulations on their broadcast deals.In 1966, the NFL and the AFL announced a merger. While it would take until 1970 for the two leagues to fully combine their operations, some other changes would start immediately. Namely, The 1966 season would be the first one in which the winners of each league played each other for ultimate football supremacy. The name of this game would be … The Super Bowl.The modern NFL is so profitable, its teams might not need actual fans.Last season, the NFL brought in a staggering $8.1 billion in league-wide revenue; add in local revenue, and the total topped $14 billion. Most of that money comes from TV, although the league’s merchandising arm, NFL Propertiesâ€"another Pete Rozelle inventionâ€"has also been a massive moneymaker.In its earliest days, NFL teams struggled to make money. Many were lucky if they could get a couple hundred fans to show up to their game. Nowadays, the importance of TV revenue has made ticket sales something closer to an afterthought. So what if only a few hundred fans show up? When it comes to the Los Angeles Chargers, in fact, the league might accidentally be conducting an experiment to see whether a team can be profitable without any fans at all!To read more about the financial side of history, sports, and pop culture, check out these related posts and articles from OppLoans:The Secret Financ ial History of Voting10 Money Lessons From the Worst Contracts in NBA HistoryMoney at the Movies: Does Box Office Gold Mean a Best Picture Win?The 12 Worst Financial Scandals In HistoryDo you have a personal finance question youd like for us to answer? We want to hear from you! You can find us  on  Facebook  and  Twitter.  |Instagram

Sunday, May 24, 2020

The Perfect Aristotelian Tragedy Sophocles Oedipus the...

Aristotle considered Sophocles Oedipus the King to be a nearly perfect example of Greek tragedy. His reasons were based on the structural perfection of the play, in which the protagonists recognition of his circumstances (anagnorisis) comes at the same moment as his reversal of fortune (peripeteia). But the terms whereby Aristotle defines character in Greek tragedy are slightly harder to work out where is the hubris of Oedipus? An examination of the plot will demonstrate that Oedipus hubris is manifest in the way in which he sets the plot of the tragedy into motion. The clue to Oedipus hubris is given at the outset of the play, in the speech at lines 58 through 77. Here, Oedipus is forced as king to take stock of the plague which has fallen upon Thebes the plague itself is considered an omen, which must have been caused by some horrific wrongdoing. Thus Oedipus has given orders to consult the oracle of Apollo, since Apollo was not only the inspirer of prophecy but also the god of pes tilence, and thus may give some insight into the mysterious plague. Oedipus phrases his account of his actions in the most lofty and high-minded terms: OEDIPUS: My poor, poor children! Surely long ago I have read your trouble. Stricken, well I know, Ye all are, stricken sore: yet verily Not one so stricken to the heart as I. Your grief, it cometh to each man apart For his own loss, none others; but this heart For thee and me and all of us doth weep. Wherefore it is not toShow MoreRelatedOedipus the King a Tragic Hero936 Words   |  4 Pages1302-6504 Mrs.Weatherford 21 November 2011 A Tragic Hero Indeed! In Sophocles tragedy Oedipus the King, King Oedipus swears to solve the murder of former King Laios in order to free the city from the plague. The plague taunts the city destroying crops and livestock and making the women unable to bear children. A seer, Teirsias tells Oedipus that he himself is Thebes’s pollution for killing his father and marrying his mother. Oedipus ignores his words and is blind to the truth until he discovers thatRead MoreOedipus As A Tragic Hero1094 Words   |  5 PagesIn the play Oedipus the King, Oedipus struggles to accept the truth and lets his temper over power him. He can be displayed as a tragic hero. His refusal to accept the truth led to Oedipus’ down fall. A tragic hero, as defined by Aristotle, â€Å"is a literary character who makes a judgment error that inevitably leads to his/her own destruction.† Sophocles’ Oedipus exemplifies Aristotle’s definition of a tragic hero. In the play, Oedipus unknowingly has cursed the entire town of Thebes. He was cursedRead MoreThe Perfect Aristotelian Tragedy: Oedipus the King Essay1432 Words   |  6 PagesThe Perfect Aristotelian Tragedy: Oedipus the King by Sophocles Works Cited Not Included Oedipus the King is an excellent example of Aristotles theory of tragedy. The play has the perfect Aristotelian tragic plot consisting of paripeteia, anagnorisis and catastrophe; it has the perfect tragic character that suffers from happiness to misery due to hamartia (tragic flaw) and the play evokes pity and fear that produces the tragic effect, catharsis (a purging of emotion). Oedipus the King hasRead MoreDeconstructing Tragedy And The Definition Of The Protagonist’S1173 Words   |  5 PagesDeconstructing Tragedy and the Definition of the Protagonist’s Innocence In Sophocles’ Oedipus Rex, Oedipus meets the Aristotelian definition of a tragic hero as divine fate and tragic flaws lead to his downfall. Oedipus’s tragic flaws like hubris, curiosity, and anger, contribute to his unfortunate fate. The components of a perfect tragedy as defined in Aristotle’s Poetics are at the center of Oedipus Rex. The play contains the elements of a perfect tragedy such asRead MoreOedipus: Aristotelian or Formalist Theory772 Words   |  4 PagesTeiresias’s speech at the end of scene one of Sophocles’ play Oedipus Rex is fairly short but it is in this encounter between Oedipus and Teiresias where the main conflict of the story begins to unfold. This is a pivotal speech in the play as it helps to develop some of the major themes in the play as well as begin to build up the tragic irony at the center of the story. When this speech is analyzed using either Aristotelian or Formalist theory key elements can be found that are e ffective inRead MoreOedipus As A Tragic Hero1939 Words   |  8 PagesStatement: Sophocles’ Oedipus is a perfect example of Aristotle’s definition of a tragic hero through the main characters prosperity to an emotional downfall caused by a tragic flaw. I. Oedipus is a Tragic Hero a. Definition of a tragic hero as defined by Aristotle i. Aristotelian tragic hero is defined (Aristotle 1961, p. 1453a). b. Oedipus falling into Aristotle’s tragic hero definition i. Aristotle directs us to Oedipus the King as a tragic hero (Bruening 1997, pp. 14-15). II. How Tragedy AffectsRead MoreTragic Hero1598 Words   |  7 Pagestragic hero was created in ancient Greek tragedy and defined by Aristotle. Usually, the realization of fatal flaw results in catharsis or epiphany. The tragic flaw is sometimes referred to as an Achilles heel after the single fatal flaw of the Greek warrior Achilles. [citation needed] Aristotelian tragic hero In a complex Aristotelian tragedy, the hero is of noble birth and is more admirable than ordinary men. He cannot, however, be morally perfect because the best plots arise when his downfallRead MoreA Dolls House As A Tragic Hero Analysis967 Words   |  4 Pagesweakness, or tragic flaw in his character, falls into the depths of misery and often to his death† (Ingham 1). Within Oedipus Rex, Sophocles laid the foundation for what is now considered the ideal tragic hero. Within A Doll’s House, Ibsen creates a modern hero in Nora Helmer; a woman who was oppressed for going against social rules for saving her husband. Nora follows the Aristotelian journey of a tragic hero, from hamartia through her tragic fall into catharsis. She is considered a modern day heroineRead MoreOedipus The King As A Tragic Hero Essay1491 Words   |  6 Pagesdramas of all time, Sophocles’ play Oedipus the King follows the tragic life of Oedipus, king of Thebes. Considered a Satyr play, the Oedipus trilogy is perhaps the most famous of Sophocles’ plays. Oedipus the King, is an Athenian tragedy that was first performed somewhere around 429 BC in Athens, Greece. Originally, the Greeks referred to the play as simply â€Å"Oedipus,† as that was what Aristotle referred to it as in the Poetics. Perhaps what makes this play so memorable, is Sophocles’ uses of the tragicRead MoreAnalysis of Oedipus As an Aristotelian Tragic Hero in Sophocles Oedipus Rex1799 Words   |  7 Pagesï » ¿Oedipus as an Aristotelian tragic hero Although one might be inclined to express uncertainty concerning the role of Sophocles Oedipus as a tragic hero (when regarding matters from a general point of view), the character perfectly fits Aristotles definition of a tragic hero. The protagonist in Oedipus Rex is noble and can be appreciated for his greatness, considering that he embodies a series of virtuous attributes. Even with this, he is not perfect and thus makes it possible for readers to

Wednesday, May 13, 2020

Health Literacy The Peoples Understanding Of Health...

Health literacy is the peoples’ understanding of the information about health and health care. As well as how the information is applied to their lives including making decisions and representing it. Health literacy is essential to people’s lives as it form people’s health including the safety and quality of health care. For Australia, Health literacy is a significant issue. Health information and systems are becoming progressively more difficult and it is hard to understand. Similar to many established countries, approximately 60 per cent of adult Australians individually have low health literacy. Therefore, they will be not able to efficiently have a choice or say anything when making healthcare decisions. Individual’s low health literacy is related to higher use of health services as a result there are low levels of knowledge among consumers and poorer health outcomes. Approximately, people with low individual health literacy are between one-and-a-half and three times more are likely to have poor outcome. Significantly Health literacy can affect a clients’ capacity to make decisions with taking action to manage their health and health care. Therefore, it essentially affects health care providers, the way their relationship is managed with clients and the health care delivery. For managers and policy makers Health literacy in essential as the complication of their systems and services can affect the clients’ ability to use the services effectively. Importantly theShow MoreRelatedMedical Information And Health Care1516 Words   |  7 Pagesand patients who do not understand medical information that is presented to them face various difficulties such as access to health care network, understanding of treatments, recommendations, and instructions. It this paper, the writer describes the formulation of the policy that helps to improve patient health literacy, communication, and information that related to health issues. Also, describes the evidence that needs to formulate a policy, alternatives, and selection criteria of policy, and itsRead MoreHealth Literacy And Effective Communication1229 Words   |  5 Pagesgroups than non-indigenous population, low level of health literacy has been considered as negative factor that impacting on the delivery of effective care and health professionals’ performances on medical treatment. With integrated health literacy program, culturally competent and appropriate communication at individual, systemic and organisational level would enhance health outcomes for consumer’s welfare. Most importantly, improved health literacy and effective communication skills would plays anRead MoreHealth Literacy1207 Words   |  5 PagesHealth literacy is a term not widely understood by the general population. It is defined as â€Å"the degree to which individuals have the capacity to obtain, process and understand basic health information needed to make appropriate health decisions and services needed to prevent or treat illness,† (About health literacy, 2014). A person’s level of health literacy is based on their age, education level, socioeconomic standing, and cultural background. Patients with low health literacy have a moreRead MoreImproving The Health Literacy Of Older Adults With Cardiovascular Disease1597 Words   |  7 PagesIntroduction Health literacy is a vital aspect of people’s everyday lives. Without health literacy, individuals would struggle with the basic skills they require to properly take care of themselves. From everyday tasks to managing a person’s health, health literacy is integrated into everything that people encounter. The purpose of this paper is to examine how the application of the intersectoral approach can work to improve the health literacy of older adults with cardiovascular disease. This reportRead MoreHealth Literacy And Health Care1386 Words   |  6 Pagesquality care to patients and the community. The ability to understand and act on health information is one of the main issue in healthcare today. A professional nurse is required to provide care and information for patients and their families. Patient and families have the right to able to understand medical information which would empower them to make informed decisions about their care (Lambert et al. 2013). Improvin g Health Literacy in healthcare settings allows greater understanding of informationRead MoreNursess Promotion Of Health Literacy Using Theories1706 Words   |  7 PagesPromotion of Health Literacy Using Theories Health literacy has been a problem with our patients. The most vulnerable populations are the elderly, people with low-income levels, those with limited education, non-native speakers of English, those with chronic mental and physical health conditions, minority, and immigrant populations. Nurses have a great role in helping our patients succeed in understanding their health conditions. Nurses can be of great help in promoting health literacy. Sykes, WillsRead MoreEssay on The Importance of Literacy in Canada1104 Words   |  5 PagesLiteracy is an important key component in almost every individual’s life. Also literacy could be described as one of the most important building blocks of our society. As our world and society becomes more complex, literacy becomes more and more important. Literacy has become so visibly important that sometimes people without proper education are not even accepted by our society. Today, many parents will do anything in order to send their chi ldren to the best schools, so their children can be educatedRead MoreHealth Literacy And The Health1603 Words   |  7 Pagesare sicker. In May of 2010 the United States Department of Health and Human Services implemented The National Action Plan to Improve Health Literacy in efforts to improve health literacy and the health of the nation. The Center for Disease and Control defines Health Literacy as the level of which a person can access, communicate, evaluate and understand basic health information. Health Literacy can range from knowledge about preventative care, treatment and awareness of all factors that can influenceRead MoreUnderstanding Literacy, And Health Literacy1665 Words   |  7 PagesUnderstanding Literacy, and Health Literacy An understanding of literacy, and health literacy is crucial to understand their impact on client health outcomes. Further, a nurse’s ability to better educate clients lies in his or her understanding of these terms. Literacy is a multilayered, dynamic and complex topic; however, in short literacy is a set of skills including reading, writing oral skills, numeracy skills, and skills that enable us to acquire knowledge and information (Keefe CopelandRead MoreUnderstanding Literacy, And Health Literacy1663 Words   |  7 PagesAn understanding of literacy, and health literacy is crucial to understand their impact on client health outcomes. Further, a nurse’s ability to better educate clients lies in his or her understanding of these terms. Literacy is a multilayered, dynamic and complex topic; however, in short literacy is a set of skills including reading, writing oral skills, numeracy skills, and skills that enable us to acquire knowledge and information (Keefe Cop eland, 2011). Literacy can be understood through

Wednesday, May 6, 2020

Our Story Shaketeaholic Is a Philippine Homegrown Concept Free Essays

It all started year 2013 when the owner wished to introduce a milk tea drink in Umbilical City , along with Filipino style ambiance. The name is derived from the drink to represent us that we specialize in producing milk tea shake revered with the best bubbles (pearls) and toppings. Many people especially students and workers would look forward for buying a cup of refreshing drink after a long hard day of studying, working and playing rather than buying a food that will lessen their hunger. We will write a custom essay sample on Our Story : Shaketeaholic Is a Philippine Homegrown Concept or any similar topic only for you Order Now Now STAKEHOLDERS are giving Umbilical City consumers something new to chew after swallowing – something gummy and sweet called pearl or sago. Stakeholders found a surprisingly large following when they discovered that milk tea has a huge market potential and it is a trendy product. And to give our product a waist, we gave our customers a variety of choices when it comes in choosing their toppings, and aside from buying the usual milk tea, we will make the simple Milk tea into a Refreshing and Flavor milk tea SHAKE. Stakeholders offers variety of flavors like melon, chocolate, strawberry, vanilla, be. At Stakeholders we only used fresh quality ingredients that have no preservatives added, as we associate ourselves with world class brands from Taiwan, so it’s really healthy because many people now are getting into health benefits if milk, tea and pearl which some studies show that it may help fight cancer. How to cite Our Story : Shaketeaholic Is a Philippine Homegrown Concept, Papers

Our Story Shaketeaholic Is a Philippine Homegrown Concept Free Essays

It all started year 2013 when the owner wished to introduce a milk tea drink in Umbilical City , along with Filipino style ambiance. The name is derived from the drink to represent us that we specialize in producing milk tea shake revered with the best bubbles (pearls) and toppings. Many people especially students and workers would look forward for buying a cup of refreshing drink after a long hard day of studying, working and playing rather than buying a food that will lessen their hunger. We will write a custom essay sample on Our Story : Shaketeaholic Is a Philippine Homegrown Concept or any similar topic only for you Order Now Now STAKEHOLDERS are giving Umbilical City consumers something new to chew after swallowing – something gummy and sweet called pearl or sago. Stakeholders found a surprisingly large following when they discovered that milk tea has a huge market potential and it is a trendy product. And to give our product a waist, we gave our customers a variety of choices when it comes in choosing their toppings, and aside from buying the usual milk tea, we will make the simple Milk tea into a Refreshing and Flavor milk tea SHAKE. Stakeholders offers variety of flavors like melon, chocolate, strawberry, vanilla, be. At Stakeholders we only used fresh quality ingredients that have no preservatives added, as we associate ourselves with world class brands from Taiwan, so it’s really healthy because many people now are getting into health benefits if milk, tea and pearl which some studies show that it may help fight cancer. How to cite Our Story : Shaketeaholic Is a Philippine Homegrown Concept, Papers

Monday, May 4, 2020

Ethical and Credible Activist Cultural †MyAssignmenthelp.com

Question: Discuss about the Ethical and Credible Activist Cultural. Answer: An ethical and credible activist Human resource manager should be an ethical and credible activist due to the reason that employees will follow the ethical standard in the organization from the human resource manager. It will help the organization to imply an ethical working environment in the internal organization. Being an ethical and credible activist, the human resource manager will have more credibility among the employees (Sekerka, Comer and Godwin 2014). Thus, the controlling and monitoring employees will be more effective for him. Following for the ethical standards by the human resource manager will motivate the employees to also follow the same. This will eventually enhance the goodwill and reputation of the organization in the market. Moreover, following of ethical principles will help to reduce the employee oriented issues and thus the productivity of the organization will get enhanced (Lazaroiu 2015). Human resource manager will more control over the management of the employees. In my previous job experience, I was given the responsibility of implementing a corporate social responsibility. In the implementation process, I am being the human resource manager, involved employees from all the departments in the project. Information and opinions are being gathered from them in order to enhance the effectiveness of the project. This helped the employees in possessing positive impression about the organization. Moreover, they felt motivated and engaged due to their involvement in the project. The following of this ethical principle in the organization helped me in enhancing the credibility of my post among the employees. They perceived me as an ethical activist and assumed that I will be the person who can ethically dissolve all their issues. Thus, this quality of mine helped me in enhancing my credibility of mine among the employees. In addition, the employees also felt motivate and engaged in their workplace. A cultural and change leader The human resource manager should also be a cultural and change leader in order to enhance the organizational productivity. Contemporary business organizations are operating in one of the most challenging business environment and thus they need to implement change management to cope up with the change in the business scenario. It is the responsibility of the human resource manager to have the leadership quality for motivating the employees in the change management (Thorn 2012). This quality of him will enable to aware the employees about the consequences of the change to be implemented. Moreover, cultural diversity along with determining the individual cultural background of the employees is also important to enhance the organizational culture (Alvesson 2012). This will help to increase the level of motivation of the employees and the change management will be more smooth and effective in the organization (Patrick and Kumar 212). It is due to the reason that employees will be well aw are about the change policies due to the effective leadership qualities of the human resource manager. Thus, the employees feedback will also be gained during the implementation of the change management in the organization. I worked as a volunteer in one of the NGO in Australia. They worked for the betterment of the underprivileged society. Workforce diversity was being implemented by me in the organization in order to enhance the productivity of the employees. At the initial stage, I faced resistance from the existing employees for this change. However, I had been able to convince them about the advantage of the workforce diversity and effectively implemented them in the organization. After implementation, monitoring is being done by me in order to determine the effectiveness of the change. It helped the organization in having various options and approaches for a certain issue. Moreover, the knowledge sharing among the employees also got enhanced due to variation in their cultures. A stakeholder mentor and coach Effective mentoring qualities of the human resource manager are important due to the reason that employees need guidance in their daily course of work. Moreover, in the present business scenario, determination of the requirement of the stakeholders of the organization including customers is important to survive in the market (Thurston, DAbate and Eddy 2012). Thus, the human resource manager should have the qualities of mentoring and coaching the stakeholders to motivate and guide them in their workplace along with identifying the requirements of them. It will help the organization to modify their policies accordingly. It is been seen that the employees feel more motivated and engaged in their workplace if they are being given proper guidance (Anitha 2014). Providing guidance will not only limit to supervising the employees in their job but also it includes a broader aspect. Motivating the employees by implementing various employee welfare policies in the organization and enabling the m in maintaining the effective work life balance is also included in the mentoring and coaching abilities of the human resource manager (Armstrong and Taylor 2014). Proper guidance to the employees helps them in having clear idea about the job to be done by them and the process of accomplishing the job. Thus, eventually the productivity of the organization will get enhanced. In one of our college event, I was assigned the task of team manager for our football team due to the fact that I am a trained footballer. However, being the manager of the team, my first job was to identify the qualities of the team players and assigning the team role accordingly. Afterwards, I acted as a mentor to them and given effective coaching to enhance the teamwork and performance. In the due course of coaching, the players came to me with their issues which need proper guidance. The issues are being solved effectively and that caused the enhancement of the performance of the team. Though, our team cannot able to win the tournament, but the teamwork of us gets appreciation from others. The understanding among the team members caught attention of every one. Moreover, the satisfaction and motivational level of the players are also not got affected by the loss, rather they were more motivated for the next years event. Thus, with my mentoring capabilities, I made the players perf orm as a whole team and with more satisfaction and motivation. References Alvesson, M., 2012.Understanding organizational culture. Sage. Anitha, J., 2014. Determinants of employee engagement and their impact on employee performance.International journal of productivity and performance management. Armstrong, M. and Taylor, S., 2014.Armstrong's handbook of human resource management practice. Kogan Page Publishers. Lazaroiu, G., 2015. Employee Motivation and Job Performance.Linguistic and Philosophical Investigations,14, p.97. Patrick, H.A. and Kumar, V.R., 2012. Managing workplace diversity: Issues and challenges.Sage Open,2(2), p.2158244012444615. Sekerka, L.E., Comer, D.R. and Godwin, L.N., 2014. Positive organizational ethics: Cultivating and sustaining moral performance.Journal of Business Ethics,119(4), pp.435-444. Thorn, I.M., 2012. Leadership in international organizations: Global leadership competencies.The Psychologist-Manager Journal,15(3), p.158. Thurston, P.W., D'Abate, C.P. and Eddy, E.R., 2012. Mentoring as an HRD approach: Effects on employee attitudes and contributions independent of core self?evaluation.Human Resource Development Quarterly,23(2), pp.139-165.

Saturday, March 28, 2020

Personal Budget Balance Sheet free essay sample

Therefore, being a good steward over your finances should be consistent and begin at an early age and progress as you age. This will provide an effective growth pattern to allow future financial security.  The purpose of this memorandum is to evaluate my client’s financial outlook, their personal budget, balance sheet, and cash flow statement and provide recommendations for improvement of their financial situation. My client, Chauncey Latham is 51 years old and a police officer. He is married and has one dependent. Kyle Latham, Chauncey’s wife is 47 years old and is currently not working. Prior to her unemployment, Kyle annual earnings were $96,000 a year. They live is a nice 4-bedroom house, in a great community with a sought after school district. The family has a comfortable looking life, though their financial outlook is pretty grim. Together Chauncey and Kyle earn $85,000 a year, which includes Chauncey’s off duty work and Kyle’s unemployment benefit. We will write a custom essay sample on Personal Budget Balance Sheet or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Their life savings have dwindled down the emergency fund is very low, and their credit card debt is high. The balance sheets show my clients assets and liabilities and verify their net worth. Any property including jewelry or saleable items is considered assets and can produce income. The asset value should have a fair market value, which means the amount of money they would have today if sold. This will allow them to have the proper foundation to establish strong financial understanding, develop strong money management skills that will pave the way long time financial security. Hence, I will determine their monthly income and show expenses to determine where modifications need to take place. IncomeActual Amt. PercentageProj Amount Salary $7,083 $7,083 Expenses Mortgage $1,400 $1,400 Property Tax $250 $250 Car Loan Payment $565 3% $548 Student Loan $485 4% $465 CC Payment $600 10% $540 House/Car/Life Ins $250 $250 Power $200 2% Water $70 $70 Telephone $265 10% $239 Gas/Transportation $400 $400 Food $800 10% $720 Clothing $100 50% $50 Med Exp. $150 $150 Entertainment $100 50% $50 Gift/Donation $300 30% $210 Saving/Emergency $500 $1,000 Savings Goal $300 $600 Based on the data, there is room for financial improvement. I would advise my clients to request lower interest rates on both their credit cards and car loan, and request student loan consolidation. Also, reducing the power usage in the home, change telephone plans to something more cost effective, and attempt to use coupons for grocery shopping when at all possible. Lastly reduce any spending on gifts, entertainment, and clothing would help in improving the overall financial outlook. If the plan is followed, the Lathams, would be able to increase the money deposited into the saving goal and emergency saving accounts. After a while, the money could be used to reduce the other debt. Having a personal budget is the blueprint for managing and spending finances. Use of the personal budget, gives you control over timely bill paying, monthly expenses, and provide an overall financial picture, so you know where you are each month.  Utilizing a budget will allow better forecasting in long-term financial needs, which will help in better long-term savings, student loans can be paid sooner, and liquid cash can be readily available when needed. A personal budget is key in improving financial health.

Saturday, March 7, 2020

Free Essays on History Of The Internet

In 1964, the RAND proposal was put forward. Written by Paul Baran, this proposal stated the principles of a new network which was to be built for maximum strength and flexibility. This new network would have no central authority. The principles of this network were that all the nodes would be equal in status and each could send and receive messages. All the messages would be sent in packets, each with its own address. These packets would be sent at one node and would arrive at another one. This may seem rather obvious, but what was new was that the way the packets went through the net was not important. That means that if one node was destroyed, the rest of the nodes would still be able to communicate. This is of course was inefficient and rather slow, but extremely reliable. The Internet still uses this method nowadays, and there has been only one collective crash so far. The Pentagon's Advanced Research Projects Agency (ARPA) wanted to install an advanced network based on the principles in the US. The network was called ARPANET and consisted of four high speed computers (nodes). In 1969, the first node was installed in UCLA. By 1971 there were 23 nodes on ARPANET. In 1972 the first e-mail program was created by Ray Tomlinson of BBN. He chose the @ symbol to link the username to the address. Telnet protocol allowed logging on to a distant computer. It was published as Request for Comments (RFC). These were means of sharing developmental work throughout the network community. Instead of using the ARPANET for long distance computing, the scientists used it for communicating with each other. Each user had his/her own e-mail address. In 1973, â€Å"Development began on the protocol later to be called TCP/IP, it was developed by a group headed by Vinton Cerf from Stanford and Bob Kahn from DARPA. This new protocol was to allow diverse computer networks to interconnect and communicate with each other (Kristula 1974-1983).†... Free Essays on History Of The Internet Free Essays on History Of The Internet In 1964, the RAND proposal was put forward. Written by Paul Baran, this proposal stated the principles of a new network which was to be built for maximum strength and flexibility. This new network would have no central authority. The principles of this network were that all the nodes would be equal in status and each could send and receive messages. All the messages would be sent in packets, each with its own address. These packets would be sent at one node and would arrive at another one. This may seem rather obvious, but what was new was that the way the packets went through the net was not important. That means that if one node was destroyed, the rest of the nodes would still be able to communicate. This is of course was inefficient and rather slow, but extremely reliable. The Internet still uses this method nowadays, and there has been only one collective crash so far. The Pentagon's Advanced Research Projects Agency (ARPA) wanted to install an advanced network based on the principles in the US. The network was called ARPANET and consisted of four high speed computers (nodes). In 1969, the first node was installed in UCLA. By 1971 there were 23 nodes on ARPANET. In 1972 the first e-mail program was created by Ray Tomlinson of BBN. He chose the @ symbol to link the username to the address. Telnet protocol allowed logging on to a distant computer. It was published as Request for Comments (RFC). These were means of sharing developmental work throughout the network community. Instead of using the ARPANET for long distance computing, the scientists used it for communicating with each other. Each user had his/her own e-mail address. In 1973, â€Å"Development began on the protocol later to be called TCP/IP, it was developed by a group headed by Vinton Cerf from Stanford and Bob Kahn from DARPA. This new protocol was to allow diverse computer networks to interconnect and communicate with each other (Kristula 1974-1983).†...

Wednesday, February 19, 2020

Childhood Obesity in Society Essay Example | Topics and Well Written Essays - 3000 words

Childhood Obesity in Society - Essay Example Causes There are numerous causes for obesity in general and childhood obesity in particular. In each of these, the society seems to have a role, however obscure it may be. The three most important are listed below. Dietary/ Food Habits: The effects of eating habits on childhood obesity are difficult to determine. A three year randomized controlled study of 1,704 3rd grade children which provided two healthy meals a day in combination with an exercise program and dietary counseling failed to show a significant reduction in percentage body fat when compared to a control group. This was partly due to the fact the even though the children believed they were eating less their actually calorie consumption did not decrease with the intervention. At the same time observed energy expenditure remained similar between the groups. This occurred even though dietary fat intake decreased from 34% to 27% (Caballero et al., 2003). A second study of 5,106 children showed similar results. Even though the children eat an improved diet there was no effect found on BMI (Nader et al., 1999). Why these studies did not bring about the desired effect of curbing childhood obesity has been attributed to the interventions not being sufficient e nough. Changes were made primarily in the school environment, whereas it is felt that they must occur in the home, the community, and the school simultaneously to have a significant effect (Kolata, 2007). Researchers at the University of North Carolina at Chapel Hill studied national beverage consumption patterns for over 73,000 Americans between 1997 and 2001 and found the following: overall calories from sweetened drinks went up... As the report stresses the effects of eating habits on childhood obesity are difficult to determine. A three year randomized controlled study of 1,704 3rd grade children which provided two healthy meals a day in combination with an exercise program and dietary counseling failed to show a significant reduction in percentage body fat when compared to a control group. This was partly due to the fact the even though the children believed they were eating less their actually calorie consumption did not decrease with the intervention. At the same time observed energy expenditure remained similar between the groups. According to the research findings the popular thinking is that diet sodas help people to lose weight, since they are low in calories, data from the San Antonio Heart Study found that the more diet soda a person drinks the greater is the likelihood that he or she will become overweight or obese. ‘On an average, for each diet soft drink our participants drank per day, they were 65 percent more likely to become overweight during the next seven to eight years and 41 percent more likely to become obese,’ said Sharon Fowler, MPH, faculty associate in the division of clinical epidemiology at the University of Texas Health Sciences Center in San Antonio. Other, more recent unpublished findings from Fowler back this up. While parents and schools may need to do a better job of promoting regular exercise and better dietary choices, the viral distribution of these soft drinks doesn’t help.

Tuesday, February 4, 2020

Follow the materials Essay Example | Topics and Well Written Essays - 1000 words

Follow the materials - Essay Example The two targeted audiences are the board of the school and the students. These audiences are different in several aspects (Longaker, 2011). The board is an official body that deals with the school management. This board is in charge of making decisions on matters concerning the school and student welfare. This board has the power to change laws within the school and should be approached with care, using all the writing ethics that are applied in official communication. The second audience consists of students. They are the ones affected by the school policies and laws. As mentioned in the letter to the board, the change in the fee structure will have a huge impact on the way the students function. This audience has no direct effect on the setting of school laws and policies. The final decisions do not lie in their hands, and they have to depend on the board to make important school decisions for them. The two audiences affect the way in which the communication decisions were made. The board implies the need of being official in the communication, bringing up the need to write an official letter. The message is effective because the board can be addressed as a single entity. This means that a single letter can be sent to the entire board instead of writing individual letters to Board members. It is also difficult to get the board to an interactive meeting as most of its members are difficult to reach. Hence, it is easier to write them a letter, which can be read to the entire board whenever they meet. The students, on the other hand, are available during school days and getting them into one sitting is easy. It is easier to communicate to them through mass presentations such as PowerPoint and website presentations. Thus, the decision to use a site presentation was driven by the fact that the students could be addressed quickly and informally. Using letters with them would require that multiple letters be written, one for each student. The letters are also

Monday, January 27, 2020

Giving An Effective Oral Presentation Goals English Language Essay

Giving An Effective Oral Presentation Goals English Language Essay INTRODUCTION An effective oral presentation achieve their objective and usually bring some benefit and learning to all the people involved in them, whether presenter, audience or tutor Chivers, B. Shoolbred, M. (2007) 1.1 What Is Oral Presentation Oral presentation involves communication between a speaker and an audience. Oral presentation is a process of speaking to a group of audience. The aim of presentation is usually to inform, to persuade the audience to act, to influence, to entertain, or to make audience think in a certain way. 1.2 Outline Academic Context Where English Is Important According to Crystal, D. (1997), English language is important because it has been widely dispersed around the world, become the leading language of international discourse, and has acquired use as lingua franca in many regions. English is a dominant language or in some instance even the required international language of communication, science, information technology, business, aviation, entertainment, radio and diplomacy.  [1]   1.3 Need For Speech Training In English Speaker can refine their craft with ongoing training and education. Speaker will be a more effective communicator and will be able to influence and persuade audience as speech training increase speaker confident in spoken skills. Skills training included: Interpretion of symbols to create meaning. Regulative rules and constitutive rules in communication. Punctuation in communication affects meaning. Voice attributes (i.e., volume, pitch, intonation, tone, tempo, enunciation and pronunciation) affect speech quality. A confident speaker is more likely to use this as excitement and create effective speech thus increasing their overall ethos.  [2]   SPEAKING IN A FORMAL ACADEMIC CONTEXT 2.1 Description Of The Transactional Model Of Communication Transactional model shows communication as an ongoing and continuously changing process which takes into consideration the effects of noise, time and systems. In transaction model, communicators can be a speaker and a listener, and can send and receive messages simultaneously. In fact, the word transaction indicates that the communication process is cooperative. In other words, communicators that is senders and receivers are both responsible for the effect and effectiveness of communication. In a transactional encounter, people do not simply send meaning from one to other and then back again; rather, they build share meaning.  [3]   2.2 Public Speaking Skills And Strategies Speaker can improve social skills to conquer fear of speaking in front of an audience. Speaker can boost self-confidence and project better in diverse situations. An effective speaker exerts a dynamic hold on an audience and can be very persuasive. A good speaker is usually sensitive to audience needs and reactions. Public speaking enhance academic and professional abilities. Speaker can be more critical when analysing arguments and information given. Speaker also able to respond appropriately to criticism and arguments. Public speaking skills help speaker to be more adept at reaching out to various types of people as speaker tailor speech to the needs of different audiences. Speaker also enhance leadership skills as speaker learn to present views and convince, and sway audience all without causing offence or slight to any group of people. There are many strategies to delivery presentation: Think positively. Change the way to think. Build confidence through careful preparation. Make use of a positive visualisation process to reduce anxiaty. Go through a positive public speaking experience or enlist the help of someone who can guide. Systemic desensitisation is used to treat many fear. It focuses on reducing the physical symptoms related to anxiety associated with any event and teaches people how to relax. The aim is to associate feeling good and relaxed with communication situations. Skills training in public speaking will teach ways to organise ideas as well as prepare and delivery speeches. Learning more about oral presentation skills will also help feel confident about giving speeches. Prepare and practse speech. Remember the main points, write down notes on cue cards and express what to say naturally.Get family or friends to listen and get feedback. Many relaxation techniques can be used to help to release tension when to give a speech. A simple one is to breathe deeply and then exhale slowly. The best way to minimize fear or anxiety is to get as much public speaking experience. With experience, initial fear will give way to comfort, confidence and even enjoyment. 2.3 Importance And Types Of Audience Analysis Audience analysis is essential in determining how speaker can build their presentation. Speaker would need to know the audience and purpose of the presentation because it affects the equipment to use, the level of preparation need to make, the type of attire need to wear etc. Make enquiries about the audience, with respect to their gender, age, social, economic, and educational backgrounds, prior knowledge, expectation, likes and dislikes, occupational backgrounds, place of residence, habits personality etc. The style of presentation should also be in tune with audience. PREPARING AN ORAL PRESENTATION 3.1 Setting And Audience Speaker familiar with the setting in which the speech is to be made is one way to reduce panic attacks and minimise the risk of unexpected problem cropping up at the last minute. For instance, speaker should find out the exact location of the place where the presentation is to be held. Start off early for the place if it is in the midst of a traffic congestion area. If arrive early, check whether need to go up on stage to present talk, and if there is a rostrum or not. Also check the public address system and the equipment that needs to be utilised. There is always the risk that the computer and the LCD projector might not function properly, find out how can get in touch with technicians who can assist when this happen. Purpose And Topic Purpose of presentation must be linked to the presentation topic. Based on this purpose, speaker must then spell out the objective. According to Cleary, S. (2008), the presentation must have a clearly defined purpose, to ensure a clear focus. The purpose of the presentation influences the choice of objective. The objective should be more specific. Structuring The Presentation Presentation must be structured in such a way so as to reflect clarity and smoothness. Audience is a listening audience and not a reading one. Audience cannot pay attention for a long period of time and may find the presentation difficult to follow if it is not systematically structured and organised. Structuring begin from main ideas. The issues that need to be discussed within each main point should be reduced in scope, especially when there is a likehood that the presentation would go beyond the limit. Each of the main ideas should be properly introduces, arranged and concluded. The sequence of main ideas should in a a manner that makes it easy for the audience to follow, such as start from the easier to the more difficult, or from the known to the unknown. Speaker can also opt to follow a time sequence. The arrangement of the points can also follow a logical sequence. Choosing Appropriate Support Materials Information can be found anywhere. In formal ways as in lectures, tutorials, books, newspapers, speeches, radio, TV etc., or in informal ways as in conversations, gossip, personal notes, memo, hearsay etc. Information can be found in a variety of media, formats and scripts. Not all information is relevant or suitable for speaker presentation. Evaluate the information obtained and select that which important for presentation. The ideal stage for evaluating the materials retrieved should be at the point of reading them, following the criteria setted. The scope, range and depth of presentation will depend on the evaluation and selection criteria that have setted. There are five criteria used in evaluating information; authority, accuracy and reliability, objectivity, currency and scope.  [4]   The material collected can be put into certain categories based on the main ideas raised. There might be a nedd to create sub-ideas under each main idea. Rehearsing The Presentation Speaker should rehearse presentation until confident that speaker can handle all aspect with finesse. Rehearse not only the verbal content of the presentation but also speaker posture, gesture and use of presentation aids.  [5]   Rehearsing can be done in front of a mirror. Speaker can see how their stand, look and deliver presentation. Rehearsing also can be done in front of friends who will give fair and honest feedback about content and delivery. MAKING AN EFFECTIVE ORAL PRESENTATION 4.1 Introducing The Topic An important step when giving an oral presentation is to introduce the topic before beginning to talk about it. This help to prepare the audience to listen to the presentation. 4.2 Presenting The Content When presenting the content, it is important to organise the presentation. It is good to outline what is speaker going to speak about. Make sure that the outline consists of introduction, body of content and conclusion. When making a presentation, make sure to stand straight and maintain eye contact with the audience. Dont forget to greet the audience before start presentation. Try not to read from notes. Talk to audience instead. Speak with an even tone. Be loud enough to be heard but do not shout. Drawing A Conclusion An important step when giving an oral presentation is to conclude the talk well. Speaker should summarise the main points of the presentation. This helps the audience to grasp what has been said. When its over, thank the audience for being good listener and leave with a smile. 4.4 Tips For Effective Delivery Here some proven tips on how to build confident and give better presentation: Know more about material than what been include in presentation. Use humour or personal storiese. So, that way speaker would not easily forget what to say.  [6]   Practise, practise and practise! Rehearse out loud with all equipment to use. Revise as necessary. Work to control filler word; practise, pause, breathe. Practise with a timer and allow time for unexpected.  [7]   Know the room. Arrive early, walk around the speaking area and practise using the microphone and any visual aids.  [8]   Know the audience. Greet the audiences. Its easier to speak to a group of friends than to strangers.  [9]   Relax. Transform nervous into enthusiasm. Concentrate on the presentation. Focus attention away from anxiety. SUMMARY

Sunday, January 19, 2020

Analysis Network

CIRCUIT SWITCHING AND PACKET SWITCHING 1) INTRODUCTION Telecommunication networks carry information signals among entities, which are geographically for apart. The communication switching system enables universal connectivity. Switches can be valuable asset to networking[1]. Overall, they can increase the capacity and speed of our network. Every time in computer network we access the internet or another   computer network outside our immediate location, our messages are sent through a maze of transmission media and connection devices.The mechanism for moving information between different computer network and network segment is called switching in computer network[2]. Figure 1: Switched network Long distance transmission is typically done over a network of switched nodes. Nodes not concerned with content of data. A collection of nodes and connections is a communications network. Data routed by being switched from node to node. Nodes may connect to other nodes only, or to stations an d other nodes. Node to node links usually multiplexed. However, switching should not be seen as a cure-all for network issues.There are two different switching technologies which are: 1) Circuit switching and 2) Packet switching. 1. Circuit Switching Circuit switching was the first switching technique have been used in communication network. This is due to easy to carry analog signals. Circuit switching  network establishes a fixed bandwidth channel between nodes before the users may communicate, as if the nodes were physically connected with an electrical circuit. The bit delay is constant during the connection, as opposed to packet switching, where packet queues may cause varying delay.In circuit switching, the transmission medium is typically divided into channels using Frequency Division Multiplexing (FDM), Time Division Multiplexing (TDM), or Code Division Multiplexing (CDM). A circuit is a string of concatenated channels from the source to the destination that carries an inf ormation flow. To establish the circuits, a signaling mechanism is used. This signaling only carriers control information, and it is considered an overhead. Since all decisions are taken by the signaling process, the signaling mechanism is the most complex part in circuit switching.Each circuit cannot be used by other callers until the circuit is released and a new connection is set up. Even if no communication is taking place in a dedicated circuit then, that channel still remains unavailable to other users. Channels that are available for new calls to be set up are said to be idle. Telephone network is example of circuit switching system. Virtual circuit switching is a packet switching technology that may emulate circuit switching, in the sense that the connection is established before any packets are transferred, and that packets are delivered in order.Unlike with packet switched networks, we cannot just send a ‘packet’ to the destination. We need to establish and la ter terminate the connection. We need to have some way of transmitting control information, we can either do this in band that the same channel we use for data or out of band which is on a seperate dedicated channel. Phone networks used in band signaling a while ago we could control switching and other functionality by playing tones into the telephone. Today in band signaling is considered unsecure and is not used except for compability with old systems[3]. 2. Packet SwitchingPacket switching  is a communications paradigm in which packets are routed between nodes over data links shared with other traffic. In packet-based networks, the message gets broken into small data packets. These packets are sent out from the computer and they travel around the network seeking out the most efficient route to travel as circuit become available. This does not necessarily mean that they seek out the shortest route. Each packet may go different route from the others. Each packet contains a  "header† with information necessary for routing the packet from source to destination.The header address also describes the sequences for reassembly at the destination computer so that the packets are put back into the correct order. Each packet in a data stream is independent. To be able to understand packet-switching, we need to know what a  packet  is. The  Internet Protocol (IP), just like many other  protocols, breaks data into chunks and wraps the chunks into structures called packets. Each packet contains, along with the data load, information about the IP address of the source and the destination nodes, sequence numbers and some other control information.A packet can also be called a segment or datagram. Once they reach their destination, the packets are reassembled to make up the original data again. It is therefore obvious that, to transmit data in packets, it has to be digital data. The packet switching can broadly be divided into two main categories, first is the virtual circuit approach and other is the datagram approach. In the virtual circuit approach to packet switching, the relationship between all packets belonging to the message or a session is preserved. A single route is chosen between the sender and the receiver at beginning of the session.When the data are sent, all packets of transmission travel one after another along that route. The wide area networks use the virtual circuit approach to the packet switching. The virtual circuit approach needs a call setup for establishing a virtual circuit between the source and destination. A call teardown deletes virtual circuit. After the setup, routing takes place based on the identifier known as the virtual circuit identifier. This approach can be used in the WANs, frame relay and an ATM. In the other approach of packet switching that is the datagram approach, each packet is treated independently of all others.Even if one packet is just a piece of a multi-packet transmission, the ne twork treats it as though it is existed alone. Packets in this approach are known as the datagram. The internet has chosen datagram approach to switching in the network layer. It uses the universal addresses defined in network layer to route packets from the source to destination. In  packet-switching, the packets are sent towards the destination irrespective of each other. Each packet has to find its own route to the destination. There is no predetermined path; the decision as to which node to hop to in the next step is taken only when a node is reached.Each packet finds its way using the information it carries, such as the source and destination IP addresses[4]. 2) HISTORY OF CIRCUIT SWITCHING AND PACKET SWITCHING * Evolution of Circuit Switching Switches are used to build transmission path between telephone set on a flexible basis. Without switches, each telephone set would require a direct, dedicated circuit to every other telephone set in order to be able to communicate. This is a full-mesh physical topology network. Such a full mesh network clearly is resource-intensive, impractical and even impossible, as early experience proved.Circuit Switching were developed for voice communications. Contemporary circuit switches provide continuous access to logical channels over high-capacity physical circuits for the duration of the conversation. In January 1878, the first telephone switch went into operation in New Haven Connecticut. Switching technology had advanced drastically over the intervening decades, yet the basic function had remained the same: interconnect users of telephones by creating circuits between them. Every telephone has a line, or circuit, that connects physically to a telephone switch.In the simple case of both the person making the call and the person being called are connected to the same switch, the caller dials the number of the desired person, the switch checks to see if the line is available, and if it is, the two lines are interconnec ted by the switch. The connection is maintained until one person hangs up his or her telephone, at which time the switch terminates the connection, freeing both lines for other calls. Three characteristics of this type of switching, called â€Å"circuit switching,† are important.First, before the two parties can talk the circuit between them has to be created, and it takes time for a switch to check if a connection can be made and then to make the connection. Second, when a connection has been made, it creates a dedicated connection. No other party can reach either party of a dedicated connection until that connection has ended. Three, since switches are very expensive one accounting policy telephone companies implemented to recover their investment was to institute a minimum charge for every telephone call, generally three minutes.For voice calls that lasted many minutes, a minimum charge did not represent a problem. But communications between computers often last less than seconds, much less minutes. It was difficult to image how circuit switching could work efficiently for computer communications when such a system took minutes to make a connection, created dedicated connections so only one person, or party, could be in connection with another party, and had a prohibitive cost structure. Although these issues were generally understood before the experiments of Roberts and Marill in 1965, they were once again strongly confirmed.The experiments also made it abundantly clear that the problems confronting computer communications were not only with the circuit-switching architecture of the telephone system. Host operating system software of the day assumed there was only one Host and all connecting devices were as if â€Å"slaves. † Hosts were not designed to recognize or interact with peer-level computers; the concept of peer-level computing did not yet exist. Thus, in interconnecting two computers, one had to be master and one slave. The problem only became worse if more than two computers wanted to interconnect and communicate.Nevertheless, the problem of Host software was considered to be solvable if a suitable communication system could be designed and made to work. Fortunately, an inquisitive innovative scientist, Paul Baran, had already explored the problems of circuit switching beginning in 1959. By 1962, he had made his concept of a message-based communication system publicly known. Independently, in 1965, an English scientist, Donald Davies reached the same conclusions as had Baran and would coin its name: packet switching. * Evolution of Packet Switching The concept of packet switching had two independent beginnings, with Paul Baran and Donald Davies.Leonard Kleinrock conducted early research and authored a book in 1961 in the related field of digital message switching without explicitly using the concept of packets and also later played a leading role in building and management of the world’s first packet s witched network, namely the ARPANET. Baran developed the concept of packet switching during his research for the US Air Force into survivable communications networks, first published in 1962, and then including and expanding somewhat within a series of eleven papers titled â€Å"On distributed communications† in 1964.Baran’s earlier paper described a general architecture for a large-scale, distributed survivable communication network. His paper focused on three key ideas: 1) the use of a decentralized network with multiple paths between any two points, 2) dividing complete user messages into what he called message blocks (packets), and 3) delivery of this message by store and forward switching. Baran’s study paved the way for Robert Taylor and J. C. R.Licklider, both wide-area network evangelists working at the Information Processing Technology Office, and it also helped influence Lawrence Roberts to adopt the technology when Taylor put him in charge of developm ent of the ARPANET. Baran’s packet switching work similar to the research performed independently by Donald Davies at the National Physical Laboratory, UK. In 1965, Davies developed the concept of packet switched networks and proposed development of a U. K. wide network. He gave a talk on the proposal in 1966, after which a person from Ministry of Defense told him about Baran’s work.At the 1967 ACM Symposium on operating system principles, Davies and Robert bringing the two groups together. Interestingly, Davies had be chosen some of the same parameters for his original network design as Baran, such as a packet size of 1024 bits. Roberts and the ARPANET team took the name â€Å"packet switching† itself from Davies work. In 1970, Davies helped build a packet switched network called Mark I to serve the NPL in the UK. It was replaced with the Mark II in 1973, and remained in operation until 1986, influencing other packet communications research in UK and Europe[5]. 3) COMPARISON BETWEEN CIRCUIT AND PACKET SWITCHINGCircuit Switching: In circuit switching a message path or data communication path or channel or circuit is dedicated to an entire message block during the process of message transmission. The entire bandwidth is dedicated to the said message as it were, and before any data transmission can take place circuit initialisation and setup has to be done to enable or determine the avalaibility of the link as in trying to make a call using the telephon line for voice messaging or even dial-up procedure where you need to establsih that the line is free for use in the first place; and then have the line engaged all through your time of use.All the message travel through the same path and keep the link engaged all the while when the block of message is been relayed or transmitted. In circuit switching, whole of the data travels along a single dedicated path between the two terminals whereas in datagram switching data is divided into packets an d each of these packets are treated indepently and travel along different paths, source and destination being the same. Circuit switching concept is used in Telephony networks where a dedicated line is assigned to particular connection, the connection in this case is permanent during the connection.Considerable amount of bandwidth is wasted in this process and at a time only one way communication is possible. Circuit switching is done at physical layer whereas datagram switching is generally done at network layer. Circuit switching requires the resources to be reserved before the transmission of data but datagram switching doesn’t require such reservation of resources. Advantages: 1. Fixed delays, because of the dedicated circuit – no interference and no sharing. 2. Guaranteed continous service, also because of the dedicated circuit. . Guaranted the full bandwidth for the duration of the call. Disadvantages: 1. Takes a relatively long time to set up the circuit. 2. Dif ficult to support variable data rates and is not efficient for burst traffic. The equipment may be unused for a lot of call, if no data is being sent the dedicated line still remains open. 3. During crisis or disaster, the network may become unstable or unavailable. 4. It was primarily developed for voice traffic rather than data traffic. Packet Switching:In packet switching the block of data is split into small units with each unit having a sequence number attached to it for orderly identification within a given message block and these different units are usaully sent across the available diffrent links or channels of data transmission from one end to the other end point where they arrvive at different times but have to be assembled together in the correct order at this location via the sequence numbers to get out the original message back without any data degredation occuring as a result of the different paths of transmissions from source to destination.Also no single data channel is dedicated to any given message block in the course of transmission as many units of different messages can be multiplexed and then get demultiplexed at their deffferent destinations correctly since there are codes to differentiate each unit of message, resulting to no conflict at all. Packet switching splits messages into small units and transmitting them to destination using different paths while at the same time keeping tracks or maintaining an orderliness of the units for proper and correct reassembling of the units to get the original message back.Packet switching is generally used in Internet data transmmission where we send data without minding if the link is free or not as far as we are connected and the pieces of information that we sent are then split into smaller units and then sent in packets, with each packets switched through different data channel most times and with no loss at the end. The main advantage of packet-switching is that it permits â€Å"statistical mu ltiplexing† on the communications lines. The packets from many different sources can share a line, allowing for very efficient use of the fixed capacity.With current technology, packets are generally accepted onto the network on a first-come, first-served basis. If the network becomes overloaded, packets are delayed or discarded (â€Å"dropped†)[6]. Advantages: 1. Since packet are typically short, the communication links between the nodes are only allocated to transferring a single message for a short period of time while transmitting each packet. Longer messages require a series of packets to be sent but do not require the link to be dedicated between the transmission of each packet.The implication is that packets belonging to other messages may be sent between the packets of the message being sent from one node to other node. This provides a much fairer sharing of the resources of each of the links. 2. The ability to do statistical multiplexing which can exploit the i nherent â€Å"burstiness† in many data applications and thereby enable sharing of the network resources more efficiently among multiple data streams is a major advantage. 3. Pipelining†- This simultaneous use of communications links represents a gain in effieciency, the total delay for transmission across a packet network may be considerebly less than for message switching, despite the inclusion of a header in each packet rather than in each message. Disadvantages: 1. Packets arriving in wrong order. 2. Under heavy use there can be delay. 3. Protocols are needed for a reliable transfer. 4. Not so good for some types data streams. Real-time video streams can lose frames due to the way packets arrive out of sequence[7]. ) PERFORMANCE ANALYSIS Circuit Switching In circuit switching, a unique connection is used to move data between the two end user[8]. â€Å"Circuit-Switched type networks† are most commonly portions of the ubiquitous telephone networks to which we ar e all accustomed. In these networks, which generally transmit voice or data, a pribate transmission path is established between any pair or group of users attempting to communicate and is held as long as transmission is required.Telephone networks are typically circuit switched, because voice traffic requires the consistent timing of a single, dedicated physical path to keep a constant delay on the circuit. Figure 2: Example of circuit switching Figure 3: Public circuit switching network Subcribers: The device that attach to the network. Subscriber loop: The link between the subscriber and the network. Exchanges: The switching centers in the network. End office: The switching center that directly supports subscribers. Trunks: The branches between exchanges. They carry multiple voice-frequency circuit using either FDM or synchronous TDM.Figure 4: Circuit establishment Basic performance equation for a single link in a circuit-switched network: Let’s consider a system with N cir cuits on a single link, with customers arriving according to a Poisson process at rate ? customers per second, and with successful customers having a mean holding time of h seconds, distributed as a negative exponential distribution with parameter ? = 1/h. If a customer attempting a new call finds all the circuits busy, there are no waiting places, so we’ll assume that the customer just goes away and forgets about making the call.Define the state of our system by the random variable K, where K represents the number of customers currently in the system, then K can take on any integer value in the range from 0 to N. With these assumptions, our model is simply a state-dependent queue, with arrival rate (independent of the state), and service rate i when the system is in state K=i. This is known as an M/M/N/N queue: Markovian arrivals, Markovian service time, N servers, and a maximum of N customers in the system. We can draw the following Markov chain diagram to represent the sy stem.When there are I customers the service rate is i , which is due to the fact that there are i customers, each with a service rate ? , so the total service rate is i. Figure 5: Markov chain diagram Under conditions of statistical equilibrium, the solution is: pi=AiN! j=0NAjj! Observe that this is simply a truncated Poisson distribution and also the result depends on the traffic A, and not the specific values of ? and ?. To establish a path in circuit switching three consecutive phases are required: 1. Connection establishment. 2. Data transfer. 3.Connection teardown. Elements of a circuit-switch node (Figure 6): * Digital Switch: Provides a trasnparent signal path between any pair of attached devices. * Control Unit: Establishes, maintains and tears down connections. * Network Interface: Functions and hardware needed to connect digital and analog terminals and trunk lines. Figure 6: Circuit switch element Packet Switching In packet switching, data are broken into packets of fixed or variable size, depending on the protocol used. The performance of packet switching is called best effort performance.If you transmit from sender to receiver, all the network will do its best to get the packet to the other end as fast as possible, but there are no guarantees on how fast that packet will arrive. Figure 7: Example of packet switching Packet switching is used to optimize the use of the channel capacity available in digital telecommunication networks such as computer networks, to minimize the transmission latency, the time it takes for data to pass across the network. It is also used to increase robustness of communication. These layers are introduced to break down the complexity of communications.The top layer (layer 7) is the layer at user level. As the layers go down, they get increasingly primitive. Layer is most primitive from as it is just binary numbers prepared to be transmit to the end node. Seven layers of open systems interconnection models are shown in ta ble 1[7]: Layer Number| Name| Description| 1| Pysical Layer| Deals with physical connection between nodes in network. | 2| Data Link Layer| Maintaining and optimising actual connection. | 3| Network Layer| Deals with communication of data on a network. | 4| Transportation Layer| Sequencing, error detection and optimisation of communication. 5| Session Layer| Controls the communication between applications running on end nodes. | 6| Presentation Layer| Format data and provides syntaxes for application. | 7| Application Layer| Contains management functions. | Table 1: Layers of open systems interconnection model Every packet contain some control information in its header, which is required for routing and other purposes. Figure 8: Packet data format Initially, transmission time decreases as packet size is reduced. But, as packet size is reduced and the payload part of a packet becomes comparable to the control part, transmission time increases.Figure 9: Variation of transmission time with packet size. As packet size is decreased, the transmission time reduces until it is comparable to the size of control information. There is a close relationship between packet size and transmission time as shown in Figure 9. In this case it is assumed that there is a virtual circuit from station X to Y through nodes a and b. Times required for transmission decreases as each message is divided into 2 and 5 packets. However, the transmission time increases if each message is divided into 10 packets[9].The packet switched networks allow any host to send data to any other host without reserving the circuit. Multiple paths between a pair of sender and receiver may exist in a packet switched network. One path is selected between source and destination. Whenever the sender has data to send, it converts them into packets and forwards them to next computer or router. The router stores this packet till the output line is free. Then, this packet is transferred to next computer or router ( called as hop). This way, it moves to the destination hop by hop. All the packets belonging to a transmission may or may not take the same route.The route of a packet is decided by network layer protocols. As we know there are two approaches for packet switching which are: 1. Datagram switching, 2. Virtual circuit swtiching. 1. Datagram Switching: Each packet is routed independently through network which is also called connectionless packet-switching. Datagram packet switching sends each packet along the path that is optimal at the time the packet is sent. When a packet traverses the network each intermediate station will need to determine the next hop. Routers in the internet are packet switches that operate in datagraam mode.Each packet may travel by a different path. Each different path will have a different total transmission delay (the number of hops in the path may be different, and the delay across each hop may change for different routes). Therefore, it is possible for the p ackets to arrive at the destination in a different order from the order in which they were sent[10]. Figure 10: Datagram packet switching Figure 11: Delay in datagram packet switching There are three primary types of datagram packet switches: * Store and forward: Buffers data until the entire packet is received and checked for errors.This prevents corrupted packets from propagating throughout the network but increases switching delay. * Fragment free: Filters out most error packets but doesn't necessarily prevent the propagation of errors throughout the network. It offers faster switching speeds and lower delay than store-and-forward mode. * Cut through: Does not filter errors; it switches packets at the highest throughput, offering the least forwarding delay. 2. Virtual Circuit Switching: Virtual circuit packet switching (VC-switching) is a packet switching technique which merges datagram packet switching and circuit switching to extract both of their advantages.VC switching is a v ariation of datagram packet switching where packets flow on so-called logical circuits for which no physical resources like frequencies or time slots are allocated shown in Figure 12. Each packet carries a circuit identifier, which is local to a link and updated by each switch on the path of the packet from its source to its destination[10]. A virtual circuit is defined by the sequence of the mappings between a link taken by packets and the circuit identifier packets carry on this link. In VC-switching, routing is performed at circuit establishment time to keep packet forwarding fast.Other advantages of VC-switching include the traffic engineering capability of circuit switching, and the resources usage efficiency of datagram packet switching. Nevertheless, a main issue of VC-Switched networks is the behavior on a topology change. As opposed to Datagram Packet Switched networks which automatically recompute routing tables on a topology change like a link failure, in VC-switching all virtual circuits that pass through a failed link are interrupted. Hence, rerouting in VC-switching relies on traffic engineering techniques[6].Figure 12: Virtual circuit packet switching Figure 13: Delay on packets in virtual-packet switching 5) APPLICATION OF CIRCUIT AND PACKET SWITCHING Circuit Switching 1. Plain Old Telephone Service (POTS) The plain old telephone system (POTS) is the largest circuit switched network. The original  GSM  network is also circuit switched. Prior to the existence of new types of networks, all communication systems had to be built based on the existing telecommunications facilities, which were largely oriented to what the common carriers refer to as plain old telephone service, known as POTS.Consequently, even today, in order to use POTS for data communications, it is necessary to use a modem to convert the data to a form suitable for voice-transmission media. The data transmission rate that can be obtained over a POTS connection is typically les s than 64 Kbps. These rates are adequate for text and audio transmission. However, they are not suf? cient for good quality video transmission in real-time. 2. Switched 56 Service Switched 56 service is a dial-up digital service provided by local and long distance telephone companies. For a connection, a data service unit/data channel unit (DSU/CSU) is used instead of a modem.Switched 56 service uses a 64 Kbps channel, but one bit per byte is used for band signaling, leaving 56 Kbps for data. This service allows the transmission of information over one or two twisted cable pairs to multiple points at a data rate of 56 Kpbs. 3. Integrated Services Digital Network (ISDN) The ISDN was designed in the 1980s to offer end-to-end digital connectivity, while providing the required QoS with data rates in the range of Kbps to Mbps over switched connections. In order to provide even higher data rates, the original ISDN was extended to broadband ISDN (BISDN) (Martin, 1985).The ISDN services are provided to users as ISDN interfaces, each comprising a number of ISDN channels. Using 64-Kbps channels, called bearer or B channels, ISDN provides access to the digital network. ISDN provides lower error rate compared to typical voiceband modems and a relatively high bandwidth data channel[11]. Packet Switching 1. VOIP It is becoming increasingly accepted to transmit delay sensitive data through a packet switched network (rather than circuit switched). There are protocols that can create a virtually real-time environment – which, for voice conversations, is sufficient.Voice over IP is essentially a voice signal encoded into a digital format, being sent through a packet switched network (or possibly any other network) using the Internet Protocol (IP). Over recent years there have been standards developed and supported by major companies including ITU-T H. 323. VOIP has a long way to evolve before it is used as widespread as circuit switched networks, but it is well on its wa y. 2. IPv6 The current protocol that is employed almost everywhere IP (IPv4) has come to the end of its useful life. This is mainly because it has run out of addresses to uniquely identify every non-private computer in the world.IPv6 has been deigned to be more efficient than IPv4 and solve the addressing problems that we face at present. Ipv6 will use 128 bits to address nodes, which provides 2128possibilities (roughly3. 4? 1038). It will incorporate a special ‘option mechanism’ to store optional headers in the transport layer (to maximize efficiency by reducing required space). Finally, Ipv6 will have support for resource allocation, allowing packets to be part of a ‘traffic flow’ which will provide better communication of data such as video/voice streams [VOIP]. 6) CONCLUSION In large networks there might be multiple paths  linking sender and receiver.Information may be switched as it travels through various communication channels. Data networks can be classified as using circuit-switching or packet-switching. Packet switching, which forms the basis of the Internet, is a form of statistical multiplexing in which senders divide messages into small packets. The switching centers receive the control signals, messages or conversations and forwards to the required destination, after necessary modification link amplification if necessary. In computer communication, the switching technique used is known as packet switching or message switch (store and forward switching).In telephone network the switching method used is called circuit switching. Circuit switching  is a technique that directly connects the sender and the receiver in an  unbroken path. In the modern and fast paced world, what we are looking for is efficiency, low costs and reliability and packet-switched networks seems to fulfill most of the criteria that the society is looking for. It would only be a matter of time before circuit switching becomes a thing of the past. 7) REFERENCES [1] Stallings, W. , Data and Computer Communications, 7th ed. 1999, Upper Saddle River, NJ: Prentice Hall. [2] Notes. com, C.What is Switching. Available from: http://ecomputernotes. com/computernetworkingnotes/computer-network/what-is-switching. [3] ABC, T. , Circuit Switching. 2005. [4] Jia, S. and G. Wang. Network performance analysis of packet-switching C;sup;3;/sup; system. in TENCON '89. Fourth IEEE Region 10 International Conference. 1989. [5] Wikipedia, Packet Switching, 2012, Wikipedia. [6] Torlak, P. M. , Telecommunication Switching and Transmission. Packet Switching and Computer Networks: UTD. [7] Heng Zheng Hann, C. Y. Y. , Fareezul Asyraf, Farhana Binti Mohamad, Fong Poh Yeee, Circuit Switching vs Packet Switching, C.Y. Y. Heng Zheng Hann, Fareezul Asyraf, Farhana Binti Mohamad, Fong Poh Yeee, Editor, Wikibooks. [8] Gebali, F. , Analysisof Computer and Communication. 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