Ip History :: Essays Papers

Ip History Recent years saw huge increase in Internet growth there were 40,073 networks on Internet (as of 10/4/94) and it was doubling approximately every 12 months. The current version (IPv4) of Internet Protocol was sufficient for 20 years, but if Internet will continue to grow, pretty soon we will run out of addresses for all connections because IPv4 can handle only 32 bit addresses (which are millions of connections). This is the major drawback of IPv4. The other issues is that IPv4 was not designed to handle real time applications such as video and audio efficiently and IPv4 can create a lot of fragmentation due to the lack of ability to predict or detect the bottlenecks in the packet’s path. The next generation of IP was designed by Internet Engineering Task Force (IETF) to handle all of these problems and was first presented on July 25, 1994 in Toronto. Thou structurally it is very different from IPv4; it still incorporates all the successful features of IPv4 like its ability to adapt to many topologies or technologies at the same time. IPv6 is increasing address format from 32 bits to 128 bits. This increase gave 340,282,366,920,938,463,463,374,607,431,768,211,456 addresses (should be more that the packet since switching the paths for each packet will degrade performance of the network. You (well the protocol) can request the unbreakable path, for the applications successfully transmit high quality video and audio over the net. Another great advantage of IPv6 is its compatibility with the IPv4. This will make transition between these two versions painless. Because it doesn't matter how well a new protocol is if there is nopractical way to transition the current operational systems running IPv4 to the new protocol. Structurally both versions are also different. They have different datagram systems and unlike IPv4, IPv6 does not specify all the possible protocol features, this makes it more adaptable to the user’s needs. The datagram in IPv6 consists of Base Header, Optional Extension Headers, and the Data Area. The Base Header is twice as large than in IPv4 due to the added extra 96 bits to the each destination and source addresses, but it actually contains less data. It contains: VERS – for version IPv6, PRIORITY – specifies the urgency 0 Uncharacterized traffic 1 "Filler" traffic (e.g., Netnews) 2 Unattended data transfer (e.g., email) 3 (Reserved)

Social Promotion or Retention: The Only choices for failing students? E

Social Promotion or Retention: The Only choices for failing students? How to help students who fail, or students who do not achieve up to a certain academic standard, is an issue that probably goes back to the beginning of levels of school for students to progress through. In the U.S. it goes back to the 1840’s where age-graded schools began. In those times children who did not meet a certain standard were retained, or they repeated that grade. Rates of grade retention are difficult to trace in the past as well as currently. In some of these illustrative examples, a state could reduce retention by half in thirty years. However, different states had different retention rates. In 1909 one Massachusetts school district had a 7.5% retention rate while a Tennessee had a 75.8%. â€Å"In the 1930’s educators recognized that grade repetition might endanger student’s social and emotional development, which gave rise to the practice of social promotion. As a result of this policy, students were passed on to the next grade even if they were not ready for the work.† (Alkin, 1114) Both social promotion and retention intend to rectify the problem of failing students. However, does either of these two methods succeed? If they do not then what does? Retention is the process of keeping students at the grade they fail. However, according to Donald R. Moore, the executive director of Designs for Change, a Chicago non-profit group that strives to improve schools, â€Å"It’s a politically popular initiative, but it harms kids in the long term.† (Gewertz, 1, 13 2002) talking about repeating the same grade. Holding students back a grade without changing the instructional strategies is ineffective. Much evidence suggests that the achievement of retained stud... ... likely to fail and help them before it can happen. (Riley, 1999), (Oakes, 1999). Mr. Franczyk, a principal in Chicago, where social promotion has ceased says, â€Å"Retention itself does not benefit anyone. But early intervention does, I see it every year.† Evidence for early intervention working is overwhelming. As Alexander, Entwisle, and Dauber put it, the answer to social promotion and retention is intervention policies that ensure that resources are brought to bear to promote successful student learning, especially for those children at risk of failure. (Alexander, 1994) This policy should lower failing rates and help students gain the mastery over the studied material it also shows them that they do not have little worth and that much is expected from them. This policy change address why students fail and changes in those areas are necessary for them to succeed.

Management Concepts Temasek Holdings Essay

1.0 Introduction Temasek Holdings is a large investment company based in Singapore. It is an active participator in the investment game, holding shares and investments in a broad range of industries all over the world. As with many companies all over the world, Temasek Holdings was affected strongly by the Global Financial Crisis, losing more than 30 per cent of the value of their portfolio (Schmermerhorn, J. Davidson, P. Poole, D. Simon, A. Woods, P & Chau, S.L. 2011). Temasek’s CEO Ho Ching has been criticised for the investment losses that occurred during the economic crisis, and must now lead the company through the increased turbulence that has been presented to them. In doing so, a potential issue that Temasek Holdings is currently facing is one of leadership. If correct management processes regarding leadership are not applied, the company could face even worse consequences. To ensure that leadership does not become an issue, Ho Ching must apply effective leadership techniques to Temasek Holdings. This report will investigate various leadership options, determining an adequate approach to leadership that will assist this company in being successful in the future. Two leadership models will be assessed in-depth. It is expected that both will assist the company in continuing in the long-term, however one option will be more suitable and beneficial to Temasek Holdings. 2.0 Literature Themes or Arguments As Temasek’s CEO has recently come under fire for her stability in leadership, it is apparent that a change must be made in the way the company is managed if they are to successfully remain with the same CEO. Leadership is fundamental in regular circumstances, but it is even more essential to the business through periods of instability, making it vitally important to the livelihood of the company to apply appropriate management procedures. It is impossible for a set of specific characteristics to define whether or not someone is a good leader, however some certain personal traits have been identified as being common among successful leaders: drive, self-confidence, creativity, cognitive ability, business knowledge, motivation, flexibility, honesty and integrity. (Schmermerhorn, J. Et al. 2011). Vision and power are also vital to good leadership; however all of these things are not achieved in the same way. Many different behavioural theories have been produced in an attempt to define good leadership styles. A widely used model of management is Fred Fiedler’s contingency model. Fiedler’s theory looks at matching various types of people to various situations, somewhat of an either/or concept. It is based on the fact that someone’s style of leadership is personality-based, thus making it difficult to change. Rather, the Fiedler model suggests putting people of specific leadership styles with situations that match that style, rather than trying to change their personal leadership style, to achieve success (Wang, Victor C X; Berger, Jim 2010, pg. 6). Fiedler classifies people into two leadership styles: relations-orientated and task-orientated. Relations-orientated people are defined as â€Å"a person who is motivated to seek prominence in interpersonal relations, who is concerned with good relations with others, who is considerate in his interaction with group members, and who tends to reduce anxiety and increase the personal adjustment of his co-workers,† (Hill, Walter. 1969, pg. 34) whereas a task-orientated person is characterised to be someone who â€Å"rejects those with whom he cannot work, and obtains need gratification and self-esteem from performance of the task. He is, therefore, concerned with performing the task and he is willing to relegate interpersonal relations to a secondary position† (Hill, Walter. 1969, pg. 35) Exhibit I (Hill, Walter. 1969, pg. 36) above shows how relations-oriented and task-oriented people are determined, through leader-member relationships, leader position power and task structure. It does this by determining how well a person interacts with people (relations) and how dedicated they are to tasks. According to Hill (1969), this model is effective and further tests done corroborate with Fiedler’s findings, making it an accurate model. Hill noted that there are so many variables that sometimes it is difficult to calculate the exact leadership style that is appropriate for someone; however it is useful as it helps to assign leaders to specific tasks and delegate how efficient leadership should be achieved. In regards to Temasek, it should be established what â€Å"type† of leader Ching is, and the company would need to work with that before any leadership goals should be established. Another common model is the Hersey-Blanchard Situational Leadership Theory (SLT). It is widely used in the business sector and was developed by Paul Hersey and Kenneth H. Blanchard. This model is based upon leaders adjusting their styles based on the maturity of their followers, which is indicated by the â€Å"readiness† (how able and willing or confident) of followers (Schmermerhorn, J. Et al. 2011). When maturity (psychologically and performance-wise) is reached, it means a reduction in support and guidance can occur, instilling a positive indication of trust and confidence. A manager must look at employees and evaluate how best to perform a certain task in a certain situation, and when the situation changes, the leadership style previously used may not be as successful in the new situation (Hambleton, Ronald K; Gumpert, Ray. 1982, pg 227). Again, leadership styles are defined as relationship-orientated and task-orientated, however in this model leadership styles are classified into four groups: delegating, participating, selling and telling. This model is beneficial to companies as it has various different types of stages based on top of the classification of relations-orientated and task-orientated leadership (Figure 1). It breaks down the two types further, into the four types above, thus making it easier to classify. Again, however, variables come into play, and it can be seen from various research that the SLT model does have its limitations. Goodson (1989) states that when further studies have been conducted on this model, the main classifier of groups (â€Å"maturity† or competence) makes almost no difference to the leadership style of a person (Goodson, Jane R; McGee, Gail W; Cashman, James F. 1989, pg. 446). Also, Goodson established that in these tests no actual measure of maturity and/or readiness was really possible when conducting research on the SLT model, making it difficult to say for certain whether the model can be effective. Furthermore, Blank (1990) makes further reference to the fact that there is little to no research supporting this model in his studies, saying that both basing the research on the main factor (maturity) as well as more complex methods, little support was found to corroborate with the main theorems of the model (Blank, Warren; Weitzel, John R; Green, Stephen G. 1990, pg. 579). false 3.0 Recommendations In the case of Temasek Holdings, it can be said that adopting a new leadership approach will be entirely beneficial for the company. No information is given as to what current leadership styles are used, but the amount of criticism being received currently illustrates that a change is needed. Of the two leadership theories discussed, it can be said that both have negative and positive points, as with any business directive. Fiedler’s model uses three determining factors: leader-member relationships, leader position power and task structure, to determine how a leadership style will work effectively. This is essentially beneficial to a business as it allows more than one factor to determine a leadership style, giving a more accurate description of what leadership style will fit a situation. This model was also corroborated with research conducted by Hill (1969) who conducted a study that demonstrated that Fiedler’s was almost always effective in the workplace. However, there were limitations in regards to variables. As every person is so different personality-wise there is a large number of variables, not all of which can be categorised. Because of this, some variables may be missed or excluded, but overall the final result does not change, making the model very effective. The second theory, Hersey-Blanchard’s SLT, uses maturity as the basis of calculating how a leadership style will be effective. This could be effective to some extent, however both Goodson (1989) and Blank (1990) argue that just one determining factor is not enough to warrant an effective model. The model is beneficial as it breaks down leadership styles into four obvious categories; the problem is determining which personality fits into these categories. No clear measure of maturity is possible, making it difficult to categorise leadership styles. Goodson (1989) also states that maturity and competence has no real effect on leadership styles. Looking at these results, it can be recommended that for Temasek Holdings to continue operating at a high level, the Fiedler model of contingency should be used as a model for assigning leadership tasks. Giving every leader in a business tasks based on their personality is advantageous as it means instead of the person working with something they are not specifically styled for, they are able to be fit with tasks that suit them. Overall, this will make a significant change both in employee satisfaction (workers are doing jobs that suit their personality style, thus making them more content) as well as production, as the leadership style they are assigned will work well for them. Models by Hill (1969) are further evidence that this model does indeed work, and that it can bring positive effects to Temasek in the future. If Temasek Holdings chooses to operate within this leadership model, criticism for the way the business is run will be lessened. Both in the short and long term this form of leadership will be beneficial to the company, affecting both large positions (for example, the CEO Ho Ching) as well as smaller managers within the company. The research shows that this is the best model for Temasek to use to bring it the most success in the future.

“A Doll’s House” by Katherine Mansfield Essay

â€Å"The Doll’s House† is one of the representative stories of Katherine Mansfield. Who is known for freshness of her approach and beautifully colored methods of presenting her ideas. The story basically gives us deep insight into the manners and behaviors of the aristocratic families. Here she ridicules the negative philosophy of social discrimination caused by uneven division of wealth. It beautifully brings out the emotional relationship between the three sisters and their friends. Moreover, it conveys an idea that parents attitude influence their children and deprive them of their natural goodness. In short in life-like manner Katherine tells us the hidden vices people belonging to higher society. From the very outset of the story we see that the girls of Burnell’s family received a beautiful doll’s house from Mrs. Hay. It was a charming house having a drawing room, a dinning-room, a kitchen and two bedrooms. All the rooms had tables, chairs, beds and carpets. The rooms were painted in different colors however Kezia liked the lamp very much, which was placed in the dinning-room. The girls were very excited and wanted to show it to their friends. So the next morning they rushed towards the school but the bell had rung and they could not disclose it to the girls. However, at the playtime, Isabel finally  disclosed the news of the house, which spread like wild fire. If was decided that two girls would see the house at one time. All the girls got an opportunity to see the doll’s house, except the Kelvey sisters, as they belonged to a poor family. So everybody teased them. Being the daughter of washerwoman and jailbird, they were  victim of the inferiority complex. However Kezia wanted then to see the house, so she asked her mother for permission but was harshly scolded. One day she saw the girls passing by the house. As the family was upstairs, she invited them to see the house. They Kelveys could not  believe but stepped into the courtyard, as they naturally wanted to see it.  Suddenly aunt Beryl’s came there and ordered them to leave the house in an insulting manner. They Kelveys ran away from there with the feeling of shame but they were happy to have seen the house. In the end, we can say that the writer has beautifully shown the attitude of the rich against the poor. It is the parents who are responsible for creating inequality in society. Children such as Kezia are scolded because they are innocent and cannot see the difference between the rich and poor.

Arguing for the Legalization of Same-Sex Marriage Essay

Arguing for the Legalization of Same-Sex Marriage - Essay Example Marriage involves very essential individual and state wellbeing and has a revered standing, both due to what it stands for and due to the significant gains to which individuals acquiring that standing are permitted. The value of the institution of marriage for society has been viewed as the obligation of prudent policymakers, the obligation to institute the guidelines legitimizing marriage. Hence, it is not unexpected that the bid to legally recognize civil unions of same-sex marriage is and will persist to be the target of extensive and fierce public debate. Marriage means a lot of things for the human society. It is a major decision that is made by infatuated couples. In reality, a lot of people regard their partner preference the most vital decision they ever make. Civil union is a permissible access to a large number of benefits, responsibilities, and securities, which most cannot be duplicated in any other means. Ultimately, marriage is the language where in ‘averageâ€⠄¢ individuals talk of life stages, self-sacrifice, commitment, family, and love. It is the language of equality, fairness, and love. Diane J. Savino, in the New York State Senate, argued that (from1:45 to 2:00 in the video) that marriage should be granted to sane homosexual couples who want to legally tie their bonds. Marriage is all about respect, love, and understanding. Therefore, same-sex marriage should be legally recognized.

Water and Its Importance in Broward Countys Environment Term Paper

Water and Its Importance in Broward Countys Environment - Term Paper Example Pollutants taken by this run-off can be released into pathways, ponds, and other systems water with negative ecological effects. In Broward Nation, a major resource of stormwater contamination is scenery run-off. The plant foods, weed killers, and bug sprays we use to keep our lawns looking their best can actually end up doing more damage than good. When it downpours, these pollutants along with other contaminants like fuel and oil can run off from our qualities and into our local storage areas, pathways, and larger systems water like the Everglades and Seaside Ocean. Flower foods, in particular, can cause some serious issues for our water resources. Flower foods promote the development of plankton and marine fresh mushrooms because they contain high levels of nitrogen and phosphorus, two nutritional values that encourage plant development. The out of control development of plankton and unwanted marine vegetation (like hydrilla and cattails) and Water hyacinth damages our ocean often . Once fertilizers get into our waterways, they can cause the rapid development of plankton. Algal biomass atmosphere the water and blocks sunshine, causing stress to marine vegetation. When that vegetation passes away, it sinks to the bottom and is decomposed by parasites. As the parasites feed off the vegetation, it reduces oxygen from the water that seafood and other creatures need to live, and can outcome in large seafood destroys. Plant biomass can also cram pathways, reducing discharge. This often results in the need for chemical treatment, which is not only costly but also plays a role in the contamination of our water.   Excess fertilizers in our water can also cause changes in established surroundings. For instance, cattails can grow so heavy that they press out all local vegetation, allowing exotic and obtrusive vegetation to take hold. This can limit looking by creatures and eventually cause local varieties to seek other places for the environment.

Australia's Viticulture Industry Essay Example | Topics and Well Written Essays - 1250 words

Australia's Viticulture Industry - Essay Example Gender is another primary segment as Lee and Low (2007, p.735) report that women in Australia buy 70% of the wine and that is typical also of their major exporting customers in the UK and US. Women may have different tastes for wine and will respond to different packaging than men (Low and Lee, 2007, p.735). Quality and cost further segment wine. These two segments may overlap, though quality is not an absolute indicator of cost. Drinking behavior is another key segment, as the wine that appeals to the occasional drinker may not be marketed in the same way as a wine meant for the market of heavy consumers. While wine segmentation can be limited to demographics, Bruwer, Li, and Reid (2002, p.221) have reported that it limits the information about the consumer. They state that segmentation should be accomplished by identifying lifestyle and drinking behavior. They contend that this makes the segments, "...more actionable from a marketing strategy standpoint" (Bruwer, Li, and Reid, 2002, p. 221). They have further broken the segments into shopping styles and desired outcome of drinking behavior (Bruwer, Li, and Reid, 2002, p. 228). While these various segments may have value from a marketing standpoint, they may limit the segment to such a degree that the overall market may be too limited to be of any strategic value. Small and medium sized wine producers will have difficulty competi... Small and medium sized wine producers will have difficulty competing with the large producers in the area of price. Small wineries can not produce at the low cost that the larger scale producers can (Lee and Low, 2007, p. 733). However, they are in a position to control other product variables such as branding and quality. By segmenting the market they could cultivate niche markets by offering products that have a specialized appeal. However, it should be noted that niche brands that are only offered as a 'change of pace' brand would be in a vulnerable position in a retail market (Jarvis and Goodman, 2005, p. 295). The niche market would have to have brand loyalty to sustain sales. Larger producers may be unable to enter these markets due to their limited base. If marketing research could show that lowering the price could sell more product, the plan would have to include which component of the mix would be given up to accommodate the lower price. Discount pricing may require less promotion. Bulk sales may improve product placement. Alternatively, pricing could be held at a premium level and sold only through direct sales or exclusive outlets. Since the 4Ps are interactive it becomes a balancing act to determine the correct mix. Other factors, such as brand awareness, product maturity, and customer relationships are additional factors that need to be considered when planning the 4Ps (Kotler, 2003, p.110). Small wineries with scarce resources have the additional difficulty of controlling a product that is at the mercy of the weather and ever changing consumer tastes. Small producers are in a good position to market their product in unique ways. They could promote their product through the use of more personal