Bgp Problems Solutions Essay Example

Bgp Problems Solutions Paper Moreover, the design and ubiquity of BGP has frustrated past efforts at securing intermediation routing. This paper considers the vulnerabilities currently existing within intermediation routing and surveys works relating to BGP security. The limitations and advantages of proposed solutions are explored, and the systemic and operational implications of their designs considered. We note that no current solution has yet found an adequate balance between comprehensive security and deployment cost. This work calls not only for the application of ideas described within this paper, but also tort further investigation into the problems and solutions to BGP security. Index Terms authentication, authorization, BGP, border gateway protocol, integrity, intermediation routing, network security, networks, routing l. I INTRODUCTION The Internet is a global, decentralized network comprised of many smaller interconnected networks Networks are largely comprised of end systems, referred to as hosts, and intermediate systems, called routers. Information travels through a network on one of many paths, which are selected through a routing process. Routing protocols communicate respectability information (how to locate Other hosts and routers) and ultimately perform path selection. A network under the administrative control of a single organization is called an autonomous system (AS) The process Of routing Within an AS is called antinomian routing, and routing benzene Asses is called intermediation routing. We will write a custom essay sample on Bgp Problems Solutions specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Bgp Problems Solutions specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Bgp Problems Solutions specifically for you FOR ONLY $16.38 $13.9/page Hire Writer The dominant interdiction routing protocol on the Internet is the Border Gateway Protocol (BGP) [21. BGP has been deployed since the centralization of the Internet, and version 4 of the protocol has been in wide use for over a decade. BGP generally works well in practice, and its simplicity and resilience have enabled it to play a fundamental role within the global Internet [3], despite roving no performance or security guarantees. Unfortunately, the limited guarantees provided by BGP sometimes contribute to serious instability and outages. While many routing failures have limited impact and scope, others may lead to significant and widespread damage. One such tailored occurred on 25 April 1 997, when a misconstrued router maintained by a small service provider in Florida injected incorrect routing information into the global Internet and claimed to have optimal connectivity to all Internet destinations. Because such statements were not validated in any way, they were widely accepted. As a August 7, 2008 DRAFT result, most Internet traffic was routed to this small ISP. The traffic overwhelmed the misconstrued and intermediate routers, and effectively crippled the Internet for almost two hours Several similar incidents have taken place in recent years [51, including a major outage caused by Coned (61 and an outage for the popular Youth site (http://www. Youth. Com/) caused by Pakistan Telecoms 171. In addition, spammed (i. E. People sending spam e-mail) sometimes introduce false information into ESP. to enable them to exchange e-mail with mail rivers using unallocated IP addresses that are hard to trace Introducing false information into BGP is also an effective way for an attacker to snoop on traffic en route to a legitimate destination, impersonate a Wee site (e. G. , to perform identity theft), or block access to certain sites [9]. These attacks and misconstructions can Gauge anyth ing from an inconsequential annoyance to a devastating communications failure. For example, critical applications such as online banking, stock trading, and telekinetic run over the Internet. Significant harm may arise if communication is lost at a crucial time. As the number of radical applications on the Internet grows, so will the reliance on the underlying network infrastructure to provide reliable and secure services. Consequently, there is great interest in increasing the security of BGP, as it is essentially the glue that holds the disparate parts of the Internet together. For example, the United States government cites BGP security as part of the national strategy to secure cyberspace [10]. In addition, the Internet Engineering Task Force (IETF) has working groups focusing on Routing Protocol Security Requirements [I I] and Secure Intermediation Routing [121 to investigate these security issues and fine practical solutions. BGP security is also a prominent topic at network operator meetings and mailing lists, such as the North American Network Operators Group (MANGO) [13]. Current research on BGP focuses on exposing and resolving both operational and security concerns. Operational concerns relating to BGP, such as scalability, convergence delay (i. E. , the time required for all routers to have a consistent view of the network), routing stability, and performance, have been the subject of much effort. Similarly, much of the contemporary security research has focused on the integrity, confidentiality, authentication, authorization, and validation of BGP messages. These two fields of operational issues and security research are inherently connected. Successes and tailored in each domain are interactive to both communities. This paper explores operational practice, standards activity, and ongoing research in intermediation routing security, exposing the similarities and differences in the proposed approaches to building a more secure Internet infrastructure. The next section provides a brief overview of intermediation routing and BGP. Subsequent sections examine todays security practices and longer-term solutions for secure immoderation routing. II. B ORDER G TIDEWAY P ROTATOR The Internet consists of tens of thousands of Autonomous Systems (Asses) that use the Border Gateway Protocol (BGP) to exchange information about how to reach blocks of destination IP addresses (called IP prefixes). BGP is an incremental protocol-?a BGP-speaking router sends an announcement message even a new route is available, and a withdrawal message When a route no longer exists. BGP is also a path-vector protocol, where each AS adds its AS number to the beginning of the AS path before advertising the route to the next AS. Each router selects a single best BGP route for each destination prefix and may apply complex policies for selecting a route and deciding August 7, 2008 DRAFT ICANN 12. 0-0. 0/8 202. C. o. On AT 120. 0-0/8 202. 12. 128. 0/18 211. 120. 0. 0/12 SAABS 202. 12. 128. 0/18 ASSESS TALLEST JOPLIN 211. 120. 132. 0/22 SONY 211. 120. 132. 0/22 ASSESS PANIC 210. 0. 0. 07 An example of address delegation from the root (IANA) to regional and national registries. Whether to advertise the route to a neighboring router in another AS, In this section, we present an overview of intermediation routing in the Internet and scribe how most of Bags security problems stem from (i) uncertainty about the relationship between IP prefixes and the AS numbers of the Asses vivo manage them, (ii) the use of the Transmission Control Protocol (TCP) as the underlying transpor t protocol, and (iii) the potential to tamper with route announcements in order to subvert BGP routing policy. A. IP Prefixes and AS Numbers An IP address is a 32-bit number, typically represented in dotted- decimal notation With a separate integer for each Of the four octets. Addresses are assigned to institutions in blocks of contiguous addresses, represented by he first address and a mask length. For example, the prefix 1920. 20/24 contains all addresses where the first three octets are 192, O, and 2-?the 256 addresses 192. 0-2. 0 to 1920. 2255. Allocating addresses in blocks leads to smaller routing tables and fewer route advertisements, as most routers need only know how to direct traffic toward the block of addresses, rather than storing separate routing information for every IP address, Since prefixes have variable length, one IP prefix may be completely contained within another. For example, a router may have routing information for two prefixes 211. 120. 0/12 and where the first prefix completely covers the second one. To decide how to forward a data packet, an IP router identifies the longest prefix that matches the destination IP address. For example, a packet with destination IP address would match 211 , 1 20, 1320/22, since this prefix is more specific than 211. 12000/12. Initially, institutions received address assignments directly from the Internet Assigned Numbers Authority (IANA), and later from the Internet Corporation for Assigned Names and Numbers (ICANN). More recently, ICANN began to delegate this responsibility to address registries responsible for efferent parts of the world. For example, the American Registry for Internet Numbers (ARIN) manages the IP address assignments for North America, whereas the R ; Essex IP Europe ens (RIPE) assigns much of the address space for Europe, the Middle East, and North e E Africa; the Asia-Pacific Network Information Center (PANIC) assigns IP addresses in Asia and the Pacific Rim, the Latin American and Caribbean Internet Address Registry (LACTIC) distributes address space through the Latin August 7, 2008 DRAFT 12. 34-0. 0/16: AS AS 3 AS 4 AS 3 12,34. 0. /16: AS AS 4 AS 2 AS 7 AS 5 AS 2 AS 5 AS 7 12. 4. 0. 0/16: AS 6 12. 34. 0. 0/16: AS AS 1 ASS 12,34. 0. 0/16: AS 1 AS 6 (a) Regular advertisement from AS 6, (b) Malicious advertisement from AS l. Pig. 2. Announcement of prefix originating from the valid AS 6 and from a malicious AS 1. AS 2 and 3 will prefer the malicious advertisement from AS I because the path length will be shorter than the valid advertisements from AS American and Caribbean regions, and the African In ternet Numbers Registry (African) serves the African region. These regional registries can assign IP addresses directly to organizations or other registries, including national strategies and Internet Service Providers that may, in turn, assign smaller portions of the address block to other institutions. Figure 1 shows an example of address delegation. Here, ICANN delegates the large address block 210. 0-0. 0/7 to PANIC, which delegates 21 1. 120. 0. 0/12 to the Japan Network Information Center OPINION), which in turn assigns 211. 120. 132. 0/22 to Sony. Sony can then perform further delegation based on its organizational setup. Autonomous Systems are assigned AS numbers (Sans) in a similar manner, with ICANN serving as the ultimate authority for delegating numbers. AS numbers from 1 to 6451 1 are public and have Internet-wide scope, requiring each number to correspond to a single AS. For example, Sony has been assigned AS number 2527. In contrast, some companies have multiple Asses. For example, AS 701 corresponds to Minuets North American backbone, whereas AS 702 corresponds to Minuets European backbone. Public AS numbers can appear in the AS-path attribute of BGP advertisements, However, many institutions do not need a unique AS number. For example, an Autonomous System may connect to a single upstream network that bears sole responsibility for providing connectivity to the rest of the Internet. The customer AS may be assigned a private AS number in the range 64512-65535 for communicating via BGP faith its provider The providers routers would then advertise the BGP routes on behalf of this customer, without including the private AS number in the path.

Biography of Srinivasa Ramanujan, Mathematical Genius

Biography of Srinivasa Ramanujan, Mathematical Genius Srinivasa Ramanujan (born December 22, 1887 in Erode, India) was an Indian mathematician who made substantial contributions to mathematics- including results in number theory, analysis, and infinite series- despite having little formal training in math. Fast Facts: Srinivasa Ramanujan Full Name: Srinivasa Aiyangar RamanujanKnown For: Prolific mathematicianParents’ Names: K. Srinivasa Aiyangar, KomalatammalBorn: December 22, 1887 in Erode, IndiaDied: April 26, 1920 at age 32 in Kumbakonam, IndiaSpouse: JanakiammalInteresting Fact: Ramanujans life is depicted in a book published in 1991 and a 2015 biographical film, both titled The Man Who Knew Infinity. Early Life and Education Ramanujan was born on December 22, 1887, in Erode, a city in southern India. His father, K. Srinivasa Aiyangar, was an accountant, and his mother Komalatammal was the daughter of a city official. Though Ramanujan’s family was of the Brahmin caste, the highest social class in India, they lived in poverty. Ramanujan began attending school at the age of 5. In 1898, he transferred to Town High School in Kumbakonam. Even at a young age, Ramanujan demonstrated extraordinary proficiency in math, impressing his teachers and upperclassmen. However, it was G.S. Carr’s book, A Synopsis of Elementary Results in Pure Mathematics, which reportedly spurred Ramanujan to become obsessed with the subject. Having no access to other books, Ramanujan taught himself mathematics using Carr’s book, whose topics included integral calculus and power series calculations. This concise book would have an unfortunate impact on the way Ramanujan wrote down his mathematical results later, as his writings included too few details for many people to understand how he arrived at his results. Ramanujan was so interested in studying mathematics that his formal education effectively came to a standstill. At the age of 16, Ramanujan matriculated at the Government College in Kumbakonam on a scholarship, but lost his scholarship the next year because he had neglected his other studies. He then failed the First Arts examination in 1906, which would have allowed him to matriculate at the University of Madras, passing math but failing his other subjects. Career For the next few years, Ramanujan worked independently on mathematics, writing down results in two notebooks. In 1909, he began publishing work in the Journal of the Indian Mathematical Society, which gained him recognition for his work despite lacking a university education. Needing employment, Ramanujan became a clerk in 1912 but continued his mathematics research and gained even more recognition. Receiving encouragement from a number of people, including the mathematician Seshu Iyer, Ramanujan sent over a letter along with about 120 mathematical theorems to G. H. Hardy, a lecturer in mathematics at Cambridge University in England. Hardy, thinking that the writer could either be a mathematician who was playing a prank or a previously undiscovered genius, asked another mathematician J.E. Littlewood, to help him look at Ramanujan’s work. The two concluded that Ramanujan was indeed a genius. Hardy wrote back, noting that Ramanujan’s theorems fell into roughly three categories: results that were already known (or which could easily be deduced with known mathematical theorems); results that were new, and that were interesting but not necessarily important; and results that were both new and important. Hardy immediately began to arrange for Ramanujan to come to England, but Ramanujan refused to go at first because of religious scruples about going overseas.  However, his mother dreamed that the Goddess of Namakkal commanded her to not prevent Ramanujan from fulfilling his purpose. Ramanujan arrived in England in 1914 and began his collaboration with Hardy. In 1916, Ramanujan obtained a Bachelor of Science by Research (later called a Ph.D.) from Cambridge University. His thesis was based on highly composite numbers, which are integers that have more divisors (or numbers that they can be divided by) than do integers of smaller value. In 1917, however, Ramanujan became seriously ill, possibly from tuberculosis, and was admitted to a nursing home at Cambridge, moving to different nursing homes as he tried to regain his health. In 1919, he showed some recovery and decided to move back to India. There, his health deteriorated again and he died there the following year. Personal Life On July 14, 1909, Ramanujan married Janakiammal, a girl whom his mother had selected for him. Because she was 10 at the time of marriage, Ramanujan did not live together with her until she reached puberty at the age of 12, as was common at the time. Honors and Awards 1918, Fellow of the Royal Society1918, Fellow of Trinity College, Cambridge University In recognition of Ramanujan’s achievements, India also celebrates Mathematics Day on December 22, Ramanjan’s birthday. Death Ramanujan died on April 26, 1920 in Kumbakonam, India, at the age of 32. His death was likely caused by an intestinal disease called hepatic amoebiasis. Legacy and Impact Ramanujan proposed many formulas and theorems during his lifetime. These results, which include solutions of problems that were previously considered to be unsolvable, would be investigated in more detail by other mathematicians, as Ramanujan relied more on his intuition rather than writing out mathematical proofs. His results include: An infinite series for Ï€, which calculates the number based on the summation of other numbers. Ramanujan’s infinite series serves as the basis for many algorithms used to calculate Ï€.The Hardy-Ramanujan asymptotic formula, which provided a formula for calculating the partition of numbers- numbers that can be written as the sum of other numbers. For example, 5 can be written as 1 4, 2 3, or other combinations.The Hardy-Ramanujan number, which Ramanujan stated was the smallest number that can be expressed as the sum of cubed numbers in two different ways. Mathematically, 1729 13 123 93 103. Ramanujan did not actually discover this result, which was actually published by the French mathematician Frà ©nicle de Bessy in 1657. However, Ramanujan made the number 1729 well known.1729 is an example of a â€Å"taxicab number,† which is the smallest number that can be expressed as the sum of cubed numbers in n different ways. The name derives from a conversation bet ween Hardy and Ramanujan, in which Ramanujan asked Hardy the number of the taxi he had arrived in. Hardy replied that it was a boring number, 1729, to which Ramanujan replied that it was actually a very interesting number for the reasons above. Sources Kanigel, Robert. The Man Who Knew Infinity: A Life of the Genius Ramanujan. Scribner, 1991.Krishnamurthy, Mangala. â€Å"The Life and Lasting Influence of Srinivasa Ramanujan.† Science Technology Libraries, vol. 31, 2012, pp. 230–241.Miller, Julius. â€Å"Srinivasa Ramanujan: A Biographical Sketch.† School Science and Mathematics, vol. 51, no. 8, Nov. 1951, pp. 637–645.Newman, James. â€Å"Srinivasa Ramanujan.† Scientific American, vol. 178, no. 6, June 1948, pp. 54–57.OConnor, John, and Edmund Robertson. â€Å"Srinivasa Aiyangar Ramanujan.† MacTutor History of Mathematics Archive, University of St. Andrews, Scotland, June 1998, www-groups.dcs.st-and.ac.uk/history/Biographies/Ramanujan.html.Singh, Dharminder, et al. â€Å"Srinvasa Ramanujans Contributions in Mathematics.† IOSR Journal of Mathematics, vol. 12, no. 3, 2016, pp. 137–139.â€Å"Srinivasa Aiyangar Ramanujan.† Ramanujan Museum Math Education Centre, M.A .T Educational Trust, www.ramanujanmuseum.org/aboutramamujan.htm.

Details, Dilemma and Decision Assignment Example | Topics and Well Written Essays - 250 words

Details, Dilemma and Decision - Assignment Example If she does agree to be part of the trial phase, would there be a guarantee that this will not trigger her ailment that may cause her life to be shortened even more? Or could there be a hope that in the process something might be discovered eventually that she may also benefit from it after all? As for Dr. Blake, the offer that he made to Mrs. Wilkins may defy the principle of non-maleficence. It can jeopardize his career and credibility as a professional and his relationship with his patients. As a doctor, he may influence the decision that Mrs. Wilkins will take though it will not be what the patient would really want. People in the medical field do take note of non-maleficence principle which means not to do harm and is considered to be an overriding principle to everyone who undertakes the care of the patient. (Butts and Rich, 2005, p.13) With this in mind, it is just appropriate for Mrs. Wilkins to become a part of the trial phase that Dr. Blake is offering her. As a doctor, Dr. Blake has studied his patient’s medical history and would not risk the safety of Mrs. Wilkins just to get facts and data for a certain project. Mrs. Wilkins, being terminally ill, may not even think of her own self. It may be true that Mrs. Wilkins will not benefit from the drug at all. That is just the start of the study, there could still be a little hope or possibility that the patient may benefit from it. If the study will be completed, it is not just for the benefit of one but maybe for the benefit of a lot of patients that will be taking it eventually. The decision of one should not just be based for the good of one. Yet it should be for the good of many. In the long run, as people start using the drug, the users will be thankful to those people who tested the drug first, this includes Mrs. Wilkins. The life that she may have right now is bound to end at any stage, however with her actions and her decision to

Feasibility study of a business Research Paper Example | Topics and Well Written Essays - 2250 words

Feasibility study of a business - Research Paper Example There are restaurants however the quality, taste and service of these restaurants are not up to the mark. And even if, there are good quality restaurants, then they charge too high prices therefore it becomes difficult for people to go to restaurants on a regular basis. These opportunities would allow the newly introduced restaurant, Hamara Khana to make a mark in the UAE food mark. United Arab Emirates (UAE) is one of the growing countries in the world particularly in the Middle East Region. Investors around the world have been evaluating the feasibility of investing in the country (Gimbel, 2007). There are several opportunities available for investors and for businesses. Because of advantageous business conditions in the country, UAE is considered as the 14th best country in the world to start a business according to the report published by World Bank (Economy Rankings, 2011). The lifestyle and living standard of UAE has improved over the years (Human Development Report, 2010). This report analyses the opportunities that are prevailing in the United Arab Emirates market for opening a new restaurant. Almost 60% of the total population of UAE comprises of South Asians which includes Pakistanis, Indians, Bangladeshis, Chinese, Thai etc (National Bureau of Statistics, 2010) and therefore this report identifies and evaluates the feasibility of opening a new South Asian Restaurant particular that offers foods to Pakistani and Indians as both are high in numbers in UAE. The name of the restaurant is ‘Hamara Khana’ which means Our Food in Hindi (National Language of India) and in Urdu (National Language of Pakistan). Although, there are few restaurants offering food for South Asians however the market still looks promising and therefore this report will analyse the feasibility of opening a small restaurant in UAE. The idea of the business is to start a new restaurant, Hamara Khana. The restaurant would be offering

Film analysis with historical references - The Motorcycle Diaries Research Paper

Film analysis with historical references - The Motorcycle Diaries - Research Paper Example The challenge of revolution as presented by the author is then associated with both the need to revolutionize understanding from personal knowledge and combining this with creating a cooperative revolution so the economic suppression in South America would diminish. The main objective with the book is one which is first based on the relaxed attitude of Guevara and the associations which he has with working in a leper society while celebrating his birthday. Guevara begins the movie with making each individual believe that there is a desire to party, pick up women and to enjoy the travels through South America while seeing the best sites. This initial attitude is one which leads the trip through most of the movie and which creates a specific response. The changing point which is noted by Guevara is when he moves into the leper society and begins to work with the divisions that are in the community. The different divisions cause him to move outside of the initial mentality and into one which is more radical in nature because of the understanding of the situation and the way in which he can now see and realize the importance of the conditions within the region (Salles, dir, 1). This is important to note because it is also a reflection of what needs to happen with the overall revolution in which each individual becomes aware of the conditions and commits to creating cooperation and community with all of South America. There are several instances where the narrator shows the change and the radical beliefs that are noted after he is able to look at and experience the journey through South America and into the leper society. The realization which is experienced by the character is one which is reflected personally first, specifically with the division in character from the beginning of the story and to the change into radical beliefs about uniting the world into a pan – America and creating a stronger set of beliefs and cooperation with those that are in the reg ion. The realization is based on the understanding that there are no divisions between those in various regions, only which has been divided by imperialism and the circumstances of the region. â€Å" ‘What do we leave behind when we cross each frontier? Each moment seems split in two; melancholy for what was left behind and the excitement of entering a new land† (Guevara, 28). This quote is one which shows that the division which occurs is also personal and which leads to the radical thoughts that there shouldn’t be divisions with the individual as well as with the society. The belief that Guevara has about division, both with the reflection of the individual character and through the continents is one which is confirmed by the works of the author. The concept is one which is based on his own travels, specifically in which he realizes that there is great advancement of those in society that are in South America and which is cut off from society. This is followed by his own beliefs and understandings while traveling that were based on finding the differences in the culture, how they were altered because of political beliefs and how this separatism was one which only created illusions that are created because of the lack of knowing and

Self Leadership Another Way To Achieve Performance Education Essay

Self Leadership Another Way To Achieve Performance Education Essay Abstract In the quest for employee performance organizations seek novel leadership strategies. Self leadership behavioral-focused, natural-reward and constructive-thought strategies provide a sound solution (Houghton, 2006). Research across diverse settings has shown that the practices of effective self-leadership strategies can lead to many benefits including enhanced motivation, positive self-efficacy perception, and improved employee performance (Bandura, 1991). Rooted in social learning theory cognitive evaluation theory, self-leadership is more comprehensive theory of self influence than self-control and self-management theories. A conceptual self leadership frame work for employee performance is also suggested in this paper for organizational application. Keywords: Self-Leadership, Self-leadership Strategies, Self efficacy/Personal mastery, Motivation, Employee performance. Introduction The most influential part in our life that has the ability to support growth than anyone else is our own self. This paper is not about the leadership of others, rather something more fundamental and more powerful i.e. self-leadership. Simply stated leadership is an art of mobilizing others for shared aspirations (Bass, 1995). Leadership is the behavior of an individual when he is directing the activities of a group towards a shared goal (Coons, 1957). Leadership requires using power to influence the thoughts and actions of other people (Zalenik, 1992). Leadership is about articulating visions, embodying values, and creating the environment within which things can be accomplished (Engle, 1986). Leadership is a social process in which one individual influences the behavior of others without the use of threat and violence (Buchannan, 1997). The simplest definition of leadership perhaps is a process of influence between a leader and follower (Hollander, 1978). There are many definitions or descriptions of leadership based on equally vast and differing viewpoints. So in the light of above, Self-Leadership can be described as a process of self influence to navigate own-self for achieving desired outcome (Manz, 1992). In fact, as the opening lines suggest, our greatest latent source of leadership and influence comes not from an external  leader, but from within ourselves. Self Leadership Self-leadership theory is based on self-influence, self-management and self control theories that has recently gained significant popularity and inspiring potential for application in modern organizations. Simply stated, self-leadership is a process through which people influence themselves to achieve the self-direction and self-motivation required to behave and perform in desirable ways (Manz Neck, 1999). Self-leadership is rooted in Social Learning Theory (Bandura, 1977) and Social Cognitive Theory (Bandura, 1986). Social learning theory explains that how people can influence their own cognition, motivation, and behavior (Yun, 2006). On the other side, social cognitive theory explains that there is a continuous interaction between people and their environment (Davidson, 2000) and behavioral outcomes are means of information and motivation (Bandura, 1986). Therefore, how self-leaders think and behave according to cognitive, motivational, and behavioral strategies (Yun, 2006) is explained by Self-Leadership theory. This is a process of self-influence which is facilitated through the use of both behavioral and cognitive strategies. Self-leadership has three distinctive strategies: behavior-focused strategies, natural reward strategies, and constructive thought pattern strategies (Houghton, 2006). Behavior-focused strategies comprises on self goal setting, self observation, self-reward, self punishment and self cueing. These strategies are intended to strengthen positive, desirable behaviors (e.g. Job performance, Team Performance). Behavior-focused strategies are particularly useful in managing behavior related for achieving performance including its unpleasant aspects. Natural-reward strategies focus on tasks that are intrinsically motivating. These strategies can also include the focusing of attention on more satisfying or rewarding aspects of a given job or task rather than on the unpleasant or difficult aspects. Constructive-thought pattern strategies focus on how thinking functional patterns are created and maintained. These strategies include identification and replacement of false self assumptions and irrational beliefs, creating of mental imagery for future successful performance, and positive self talks. Combining all these strategies yields an impressive package of self-influence kit that has a huge potential for organizational application in todays rapidly changing business environment. Self-leadership is a more comprehensive theory of self-influence than both self-control and self-management (Manz, 1986). Self-leadership combines the behavioral strategies suggested by self-management and self-control with cognitive strategies based on the concepts of intrinsic motivation and constructive thinking patterns. Self-leadership is more of a broader concept than both the theories of self-control and self-management. Self-management highlight extrinsic rewards (e.g. monetary rewards, praise, recognition, and self-reinforcement based on external stimuli). But self-leadership goes beyond this viewpoint and focuses on natural rewards. Natural rewards imply that performance of the task or activity is a reward in itself (Manz Neck, 1999). In summary, conceptualization of natural rewards in self-leadership theory is mainly based on the intrinsic motivation literature. Motivation, according to one definition, is an attribute that moves us to do or not to do something (Garrison, Broussard and Gredler, 2004).Motivation refers to the motives underlying behavior (Guay et al., 2010). Motivation can also be defined as voluntary uses of high-level self-regulated learning strategies, such as paying attention, connection, planning and monitoring (Turner, 1995). However Hornby (2000) states that motivation is an incentive to act or move. Research tells that there are two types of motivation, extrinsic and intrinsic. Extrinsic motivation is the result of externally administered motivators including pay, compensation and benefits, material possessions, monetary gains and positive evaluation by others. Intrinsic motivation is that type of motivation that is activated by personal enjoyment, interest, or pleasure (Deci et al, 1999). Intrinsic motivation is derived from within a person and positively effects behavior and performance (Ryan Deci, 2000). Performance refers to the effectiveness of individual behaviors that contributes to organizational objectives (McCloy, Campbell Cudeck, 1994). However Motowidlo (1997) argues that performance is all about behaviors with an evaluative aspect. Self-leadership theory encompasses both intrinsic motivation literature and cognitive evaluation theory (Deci Ryan, 1985).Cognitive evaluation theory advocates that intrinsic motivation is driven by the need for competence (i.e. to exercise and extend ones capabilities) and the need for self-determination (i.e. the need to feel free from pressures such as contingent rewards). Cognitive evaluation theory argued that individuals will try to seek feelings of competence and self-determination by overcoming challenges (deCharms, 1968). Support for the efficacy of intrinsic motivation has been demonstrated in numerous empirical studies (e.g., Deci, Connell, Ryan, 1989; Harackiewicz, 1979; Zhou, 1998). Feelings of competence and self-control (i.e.self-determination) are central part of natural rewards provided by self-leadership theory (Manz Neck, 1999). Through self leadership strategies, activities and tasks can be chosen, structured, or perceived in ways that lead to increased feelings of competence self-determination that in turns enhance task performance. Self leadership theory is very much complementary with self-determination theory (Deci, 1972). Although natural reward strategies are generally effective, self-reward strategies utilizing external rewards may also be helpful (in those situations where natural or intrinsic rewards are not needed) to increase (individual or team) performance (Manz Neck, 1999). At the heart of social cognitive theory lies the concept of Self-efficacy or personal mastery (Bandura, 1986). Self-efficacy talks about persons beliefs regarding his/her capabilities to achieve a specific task (Bandura, 1991). As per cognitive evaluation theory need for competence and self-determinations (Deci Ryan, 1985) leads to more difficult goals selection and increased perceptions of self-efficacy which in turn, leads to higher future performance (Bandura, 1991). Self-leadership theory incorporates all above components of cognitive evaluation theory and social cognitive theory. In short self-leadership strategies mentioned above enhance self-efficacy perceptions, which lead to higher levels of performance (Manz Neck, 1999). Empirical evidence supports the effectiveness of self-leadership strategies in increasing self-efficacy perceptions and performance. More recently, role of self-efficacy as a mediator of the relationship between self-leadership strategies and performance has also been examined indicating significant relationships (Prussia et al., 1998). Positive Perception of self Efficacy or Personal Mastery SUCCESSFUL PERFORMANCE Based on the literature above it can be summarized here that Self-leadership is a process of self-influence based on self-control, self management and self regulation theories. It is also rooted in motivation theories, Social learning theory and cognitive evaluation theory.  Research across diverse settings, from the educational domain to the airline industry, has shown that the practices of effective self-leadership strategies can lead to many benefits including high motivation, self-efficacy, and enhanced employee performance (Bandura, 1991).  As mentioned Self leadership strategies include behavioral-focused, natural-reward and constructive-thought pattern strategies. Taken together these core self-leadership strategies and aligning them to motivation, self efficacy and performance following conceptual frame work (figure.1) is suggested aiming at to achieve successful performance in an organization. This suggested conceptual frame work is modified from the basic model of Self leadership and personal effectiveness proposed by Manz Neck (2007). Figure.1 In the light of the self leadership literature the figure.1 above is suggesting a conceptual framework which implies that applying self-leadership strategies and their components through effective training programs in organization can help in developing self-led employees who can achieve goals like individual, team based or organizational performance through personal mastery. Successful performance leads to positive perception of self efficacy which creates a positive self sufficient upward spiral effect for new successful performance. As per limitation in this paper identifying individuals team based self leadership and team member work role performance was not studied which creates room for future research. Effective self-leadership strategies do not stress independent employee behaviors by ignoring teams or organization context. Rather, effective self-leadership strategies encourage a coordinated effort by individuals to seek their own personal identity and mode of contribution as part of a group, teams or organization that produces synergistic performance (Konradt; Andreßen; Ellwart, 2009). Furthermore, self-leaders are less likely to be resistant to organizational change (Neck, 1996) which is important for any learning organization as it responds and adapt to changing environment. As organizations continue to redesign and adopt structures that need a greater dependence on individual initiative, the popularity of self-leadership concepts is likely to remain strong. Finally, self-leadership behavior shaping strategies provide considerable assurance for taking the quest for employee performance to the next higher level. Indeed, effectively trained self-led employees, both behaviorally and cognitively, may offer the best blueprint for achieving employee and organizational performance in the 21st century.

Evolution of Learning Ability in Fruit Flies Essay -- Biology Fly Dros

Learning & Memory in Fruit Flies Scientists have traditionally viewed learning and memory as "complex traits" in the sense that they are believed to be the net result of various different genetic and environmental factors interacting with one another. As it is not always practical or ethical to use human subjects in research, simpler "model" organisism are often used, and drosophila melanogaster (i.e. the fruit fly) is one of the most well known and well studied in the biological sciences. Abstract Two thousand fruit flies of the species Drosophilia melanogaster were maintained for six months before any experimenting began. Flies subjected to experimentation were 14 days old and were conditioned to be better learners. Petri dishes filled with pineapple juice and orange juice were used on which the flies could lay their eggs. Quinine was added to one of the juices to turn flies away from that medium. By selecting eggs from the juice that did not contain quinine, flies who had learned to avoid the juice with quinine passed on their learning ability. Subsequent generations of fruit flies did actually become "smarter" as demonstrated be their ability to more readily differentiate between the quinine medium and the regular medium as well as their ability to remember this association for a longer period of time. Methods Experimental Design Base Population All flies used in Mery & Kawecki's experiment were of the species Drosophilia melanogaster. The experimental population was derived from 2000 flies and maintained for six months before any experimenting began. All flies subjected to experimentation were 14 days old. Experimental Evolution Design Before any testing was actually con... ... the different genetics of every individual fly, but in general, it is possible to say that it did improve. This proves the point that learning is favored when environmental factors and other cues play a significant role. The experiment also showed that the learning ability to modify oviposition substrate choice has direct correlations with fitness. Single-locus large-effect mutants would be the best approach for this experiment, but the group wanted to simulate learning ability in a natural environment so they chose to use a variegated sample. References Mery, Frederic & Tadeusz J. Kawecki. "Experimental evolution of learning ability in fruit flies." Proc.Natl. Acad. Sci. 99.22 (2002): 14274-14279. Papaj, Daniel R. and Emilie C. Snell-Rood. "Memory flies sooner from flies that learn faster." Proc. Natl. Acad. Sci. 104.34 (2007): 13539-13540.