Developing Expected Forwarded Counter (EFW)

Developing Expected Forwarded Counter (EFW) Abstract Wireless mesh networks have emerged as adaptable and low cost networks. Expected forwarded Counter (EFW) is a cross layer metric introduced to deal with the problem of selfish behaviour in order to provide reliable routing. This paper proposes an enhancement to the EFW, by considering congestion incurred due to selecting only high quality paths. The performance of proposed metric is evaluated through simulation. Simulation results show that overall routing performance is increased in terms of throughput and packet delivery ratio. Introduction Wireless Mesh Network (WMN) is a promising technology for the next generation wireless technologies. The Mesh Networks are self-organized, self-configured and easily adaptable to different traffic requirements and network changes. Routing is a challenge in Wireless Mesh Network (WMN) due to unpredictable variations of the wireless environment. Initially, to select a path with highest delivery rate in wireless mesh network, metrics that capture link quality have been introduced. But, most of these metrics are designed by assuming that each wireless mesh router participates honestly in forwarding process. While this assumption may not be valid in presence of selfish routers which may get profit from not forwarding all traffic. Selfish users utilize the network resources for its own benefit but unwilling to spend for others. Such selfish behavior reduces network delivery reliability. Metrics have been introduced to detect and exclude selfish nodes in a route to destination. These metrics do not consider quality of links, hence cannot select best path from source to destination. Cross layer metrics were used to consider both link quality and selfish behaviour of node [2] in order to select a high performance path. This kind of solutions may cause only high quality to get used and other links will get unused. This will make links to be congested seriously and in turn cause performance degradation. In this paper we propose metric that combines link quality and congestion information from MAC layer and forward reliability of node from routing layer. The rest of this paper is structured as follows. Section II discusses related work. Section III illustrates proposed work. Section IV presents results obtained through simulating proposed metric in comparison with ETX and EFW. Related work: Several works presented in the recent research literature focus on reliable data transmission in wireless multi hop networks with selfish participants. In recent years, several routing metrics have been proposed to select the path with the highest delivery rate in wireless mesh networks. The essence of all these metrics lies in the selection of reliable network paths, avoiding lossy wireless links prone to transmission errors. Some of these are discussed below. ETX (Expected Transmission Counter): Routing metrics for wireless mesh networks like ETX adopt a probabilistic model to represent the transmission reliability of a wireless link. Specifically, ETX measures the expected number of transmissions, including retransmissions, needed to correctly send a unicast packet over a wireless link. In order to compute ETX, it is necessary to estimate the packet loss probability in both directions since, in wireless networks based on the IEEE 802.11 protocol, the destination must acknowledge each received data frame Let (i, j)be a wireless link established between node i and j;Pij and pji denote the packet loss probability of the wireless link(i, j) in forward and reverse directions separately. The probability of a successful transmission on the wireless link(i, j)can therefore be computed as Ps,ij= (1−pij)(1−pji). Then, the expected number of transmissions necessary to deliver the data packet, considering both its transmission and the successive acknowledgment as required by the IEEE 802.11 protocol, can be evaluated according to expression Despite the purpose of selecting the most reliable paths, ETX does not model accurately the delivery rate of a network link, since it does not consider the forwarding behavior of the nodes that have established that link. In particular, ETX and its derived metrics do not take into account that a selfish node might discard the packet after its correct reception, if it benefits from not forwarding it EFW: To address the problem caused by the dropping behaviour of selfish participants, we combine the link quality measured by the ETX routing metric with the forwarding reliability of a relaying node j by improving the probabilistic model on which ETX is based. Let pd,ij be the dropping probability of a network node j((1−pd,ij)represents its forwarding probability). Since a network node can drop selectively the traffic sent by its neighbours, the dropping probability of any node j is identified both by the sending node i and the relaying node j. The probability that a packet sent through a node j will be successfully forwarded can be computed as pfwd,ij=ps,ij(1−pd,ij).Then, the expected number of transmissions necessary to have the packet successfully forwarded (Expected Forwarding Counter, EFW) can be measured according to the following equation. The first part of equation, which coincides with the ETX metric, considers the quality of the physical and MAC layers, whereas our contribution takes into account the network layer reliability. Therefore, EFW represents a cross-layer metric that models both the physical conditions of the wireless medium and the selfishness of the node with which the link is established. In addition to detecting the misbehaving nodes, the representation of the link reliability provided by the EFW metric permits to use the network paths with the highest delivery performance, without pruning the alternative routes that contain selfish nodes. Proposed work: The disadvantages of this solution are that nodes wanting to transmit packets will attempt to use the same high quality link and cause it congested seriously. And at the same time other links will get unused. MAC layer metric: Our proposed metric is based on the retransmission mechanism in MAC. The first part of this method is the success rate of transmitting frames based on the average number of retransmissions which we call Frame Transmission Efficiency (FTE) [13]. Fig. 1: Illustration of the retransmission mechanism at the MAC Layer The number of retransmissions of RTS and Data frames for each Successful transmission in MAC layer is supposed to represent the quality of that link and congestion instance. The success rate of sending frames is therefore a good estimate of both the quality and congestion of a link. From it the best quality links may be selected. The success rate of each link (FTE) is updated when a node forwards a Data packet to its neighbour and passes it up to the routing protocol. ACK Failure Count denotes the number of Data retransmission and RTS Failure Count denotes the number of RTS retransmission. The kth packet will send from Node S to Node D. The number of retransmission is assumed as Failure (k) and denotes below: Failure (k) = ACK Failure Count (k) + RTS Failure Count (k) (j) Thus FTE (k) between Node S and Node D is formulized as equation (4). It reflects the link quality and congestion situation of links. FTE (k) = We are using this frame transmission efficiency to represent link quality and congestion. It is MAC layer information. From routing layer we consider forward probability estimation. In cross layer fashion we combine information from both MAC and Routing layer to obtain congestion aware EFW. It is computed as follows Enhanced EFW or congestion aware EFW= Simulation Simulation scenario We performed simulations with NCTUns6.0 simulator that evaluates performance of the metric in comparison with EFW using OSPF (Open Shortest Path First) routing protocol. Performance Evaluation: To evaluate the performance of proposed metric in comparison with existing metrics ETX and EFW, the following variables are analysed Throughput Packet Delivery Rate Drop Rate From fig1. We can observe that the proposed metric has more throughput than the other routing metrics in wireless mesh networks. By this we can understand that the proposed metric selects better path in presence of selfish nodes in comparison with other metrics. From fig2. It seems that congestion aware EFW has more packet delivery rate when compared with other metrics. Conclusion: In this paper we introduced an enhancement to existing cross layer metric called Expected forward counter (EFW). In this metric we replaced link quality metric obtained from ETX metric with Frame Transfer Efficiency (FTE) metric which considers not only link quality but also congestion of link. As the proposed metric in cross layer fashion combines MAC layer observations of link quality and congestion with routing layer observations of forward probability estimation, it gives better performance in comparison with ETX and EFW metrics. Simulations results show that routing performance of OSPF in terms of throughput, packet delivery rate and drop rate has been improved in proposed metric. References: S. Paris, C. Nita-Rotaru, F.Martignon, and A. Capone, †Cross-Layer Metrics for Reliable Routing in Wireless Mesh Networks â€Å", in proc. IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 21, NO. 3, JUNE 2013. N. Nandiraju, D. Nandiraju, L. Santhanam, B. He, J. Wang, and D.P. Agrawal, â€Å"Wireless mesh networks: Current challenges and future directions of web-in-the-sky,† IEEE Wireless Commun., vol. 14, no. 4, pp. 79–89, Aug. 2007. S. Paris, C. Nita-Rotaru, F.Martignon, and A. Capone, â€Å"EFW: A cross layer metric for reliable routing in wireless mesh networks with selfish participants,† in Proc. IEEE INFOCOM, Apr. 2011, pp. 576–580 D.S.J De Couto, D. Aguayo, J. Bicket, and R. Morris. A High-Throughput Path Metric for Multi-Hop Wireless Routing. Wireless Networks, 2005. D. Johnson and G. Hancke, â€Å"Comparison of two routing metrics in OLSR on grid based mesh network,† Ad Hoc Netw., vol. 7, no. 2,pp. 374–387, 2009. Da Guo, Jun Li, Mei Song, Junde Song,â€Å"A Novel Cross-Layer Routing Algorithm in Wireless Mesh Network† in the proc. of IEEE International Conference 2007,pp 1-3,vol-07. Golnaz Karbaschi, A Link-Quality and Congestion aware Cross layer Metric for Multi-Hop Wireless Routing.2nd IEEE International Conference on Mobile Ad-hoc and Sensor Systems Washington, DC USA November 2005. M.E.M.Campista, P. M. Esposito, I.M.Moraes,L.H. M. Costa,O. C.M. Duarte, D. G. Passos, C. V. N. de Albuquerque, D. C.M. Saade, and M. G. Rubinstein, â€Å"Routing metrics and protocols for wireless mesh networks,† IEEE Netw., vol. 22, no. 1, pp. 6–12, Jan.–Feb. 2008. OSPF

Uncertified Teachers in Prince George’s County Schools :: essays papers

Uncertified Teachers in Prince George’s County Schools Prince George’s County has been the largest school district in Maryland for the past more than twenty years. However, as a result of under funding, compared to other Maryland public school districts, Prince George’s County sustains the second highest percentage of uncertified teachers in the state. The lack of certified teachers has left lasting negative effects on the Prince George’s county school system. This problem goes much deeper than Prince George’s County, uncertified teacher are being allowed into the classroom all over the country and have been for the last couple of decades, mainly due to teacher shortages. By definition "a qualified teacher is expected to have a broad background of general education as well as professional preparation."(Teacher) it has never been considered satisfactory for a student to complete on 60% of material taught, why should it be different for teachers? In the early 1980s during a teacher shortage graduates of teacher education programs had lower levels of academic achievement than most college graduates and were still allowed to teach. In 1991-92, 16,000 teachers nationwide were uncertified. Currently, 37 of 39 states employ waivers, which allow failing teachers into classrooms. Past attempts at solutions were Teachers for America, Experimental Certification of Ethnic Colleagues for Elementary Schools, provisional certification, and emergency certification. Teachers for America is a very easy, "six week crash course in teacher survival skills taught primarily by teachers from their troubled placement sites."(Roth, 220) These teachers are said to bring "enthusiasm and intellect" to the classroom. In inner city and urban school systems, where most of the student body is poor and in the greatest need of good teachers, the TFA teachers are installed. While TFA is a good idea and puts teachers in classrooms, some say that the children who are being used as guinea pigs for this experimental teacher training are suffering. However, after receiving praise from some major cities, its training program was approved in 1995 and it "received $2 million from AmeriCorps, President Clinton’s national service initiative."(Mosle, 3) Experimental Certification of Ethnic Colleagues for Elementary Schools (E3) was an effort to "increase the representation of males and people of color on teaching staffs of elementary schools,"(Shade, 261) in response to teacher shortages. This solution was implemented for three years and was very successful. Provisional certification is given to a person who has been certified in another state and has passed the Praxis II, "but who needs one or two courses Maryland requires for teachers.

A Judgment in Stone, by Ruth Rendell Essay -- Literary Analysis, Ruth

As human beings, our personalities determine our actions. In the novel, â€Å"A Judgment in Stone† by Ruth Rendell, Eunice Parchman and Joan Smith both possess two distinct personalities that fuel their hatred of the Coverdale family. Because of Eunice’s illiteracy and Joan’s insanity, they develop a mutual friendship that proves to be fatal for the Coverdale family. Eunice Parchman’s illiteracy drives her to kill the Coverdale family and leads to the discovery of her crime. Eunice is accused by Rendell of killing the Coverdale family because she cannot read or write (1). Because of the war, Eunice never learned to read, and as a result, she has shut herself out of the world. Rendell states at the opening of the novel, â€Å"Literacy is one of the cornerstones of civilization. To be illiterate is to be deformed. And the derision that was once directed at the physical freak may, perhaps more justly, descend upon the illiterate† (1). Eunice’s feeling of embarrassment in regards to her illiteracy causes her to misjudge the Coverdale famil. She insensitively prejudges their gestures of friendliness towards her as mockery of her illiteracy. Not only does her inability to read cause her to misjudge her victims’ sociability, but it also causes her to have a very limited imagination and little regard for others. Rendell states , â€Å"Illiteracy had dried up her sympathy and atrophied her imagination. That, along with what psychologists call affect, the ability to care about the feelings of others, had no place in her make-up† (42), in reference to Eunice’s heartlessness. Eunice’s hatred for literacy intensifies throughout the novel as she is faced with several tasks that require literacy, the ability that she does not possess. Rendell describes suc... ...ed of the upper class society and by extension the Coverdale family causes them to form a mutual bond which they both benefit from. Rendell describes their relationship, â€Å"Without letting on Eunice thought Joan brilliantly clever, to be relied on for help whenever she might be confronted by reading matter†¦ Without letting on, Joan saw Eunice eminently respectable, a possible bodyguard too if Norman (her husband) should ever attempt to carry out his feeble threat of beating her up†¦Ã¢â‚¬  (87). Fate is what brings Eunice and Joan together, and fate is what ultimately brings about the deaths of the Coverdale family. Works Cited Rendell, Ruth. A Judgement in Stone. Vintage; January 4, 2000

Creons Tragic Insecurity in Sophocles Antigone :: Antigone essays

Creon's Tragic Insecurity in Antigone In ancient Greek tragedies at least one character has the misfortune of having a tragic flaw. The flaw usually effects the protagonist and leads to his down fall. Normally, the characters close to the protagonist are all affected by his flaw. In Antigone, by Sophocles, Creon's tragic flaw is that he is insecure. Creon's insecurity leads to the death of many people and to his own downfall. At many times, Creon feels that people are directing everything toward him, when of course they are not. Consequently, he takes action to make sure people take him seriously. He hopes his actions will teach people not to walk all over him and his empire. However these actions are not always the right ones. Since Creon is so insecure he feels that people are conniving against him. When Polyneices was found buried after Creon clearly announced no one was to bury him, Creon completely dismissed the idea that it could have been the gods or a mere woman who buried Polyneices. He said, "There have been those who have whispered together. Stiff-necked anarchists, putting their heads together, scheming against me in alleys."(9) The mention of the word "those" shows that Creon feels many people are out to disobey his laws and make him look bad. Contrary to Creon's belief it was a woman, Antigone, who had gone to bury her brother Polyneices because she felt he deserved a proper burial. Creon's insecurity made him feel that a large group of people were against him when in reality it was only one woman who disobeyed his law. Creon's insecurity blinds his ability to direct order in his country properly. After Antigone buried Polyneices Creon felt he needed to take a strong stand or people would think he would always be lenient toward criminals. However, to achieve this Creon felt he needed to take drastic action against Antigone. He once even said to his son, Haimon, who was about to marry Antigone, "The woman dies. I suppose she'll plead family ties. Well, let her. If I permit my own family to rebel, how shall I earn the world's obedience?" (19) This quote shows that Creon feels that to prove himself to the country he needs to earn the "world's obedience".

Filipino Youth

Nearly three enduring decades of nothing but untainted, out and out public service made me the civil servant I am today. From a newcomer legislator of my hometown, then to a three-term local chief executive, to being here at this very chamber, I am deeply gratified to have stayed and committed for my beloved Tarlaquenos from the very beginning until now. It is but apt and proper to primarily express my unending gratitude to God Almighty, whom I have sought for guidance and never failed to impart me with prudence and vim to do nothing but good for our people. Lord, with unending praise, I shall yield to your Holy Name and Will. I am likewise, thankful to the integral constituency of the second district – from undivided voters to unwavering allies and friends who trusted me for the second time around to be part of this provincial council. To my loving family – God’s greatest gift to me, thank you for always being there. These span of years of serving the people from the grassroots up to the district echelon honed me to be further adroit in the daunting tasks of local policy-making. Hence, renewing this tenure implies another productive chapter for this representation, which I anticipate to be steadily imbued with dynamism and throughput. This renewed opportunity will further ascertain what we have already endeavored and prospered for our province†¦ for our people†¦ for our Tarlac. Being alongside with our kababayans – seeing, feeling, hearing and bearing with them, molded me to be more aware and proactive with the problems that afflicted their communities, which we can throw a light on at full tilt through appropriate legislative measures. These various hands-on involvements with communities taught me boundless points to improve my calling as a humble representation of our district. It is also a formidable admission on my part that through these experiences, I draw might and optimism to endure with the challenges that lies ahead. The propitious opportunity to serve this constituency hand in hand with our beloved provincial governor, honorable Victor Yap, similarly taught me valuable and progressive views on governmental headship and advocacies that guarantee the uninterrupted progress of our people. This grassroots ascendancy, where this humble representation unceasingly anchors its legislative agenda, places the province’s citizens as midpoints, a proven gauge that confidently invests on human capital and development. I warmly commend our governor for his tried and tested Sulong Tarlac platform with its four enduring pillars – Pagkain Muna, Kalusugan Muna, Trabaho Muna and Edukasyon Muna. This attainable quartet paradigm shall be my constant muse on instigating the initiatives and proposals solely catered for our people. Through these pillars, we have evolved from being a nearly crippled agency to a now effectual, dependable people’s body rolling a much-desired overhaul – straightway among the frontrunners on collective nation building. But more needs to be done. Allow me then, fellow members of this august body, to cite some of the accomplishments and envisioned proposals of this humble representation for our province. AGRICULTURE 1. Tarlac is anticipated to be the leader in agricultural innovation. Among my top agenda is to be able to draft a road map that will boost the local organic movement. Last year, a nationwide organic congress was held that showcased the different organic produces and commodities of Tarlac to the country. Let us not allow the opportunity to pass every year on encouraging different local cooperatives to organize and support organic farming within their assemblies. Inopportunely, the Gulayan venture has some deficiencies that need to be attended. In coordination with the Department of Agriculture by means of legislation, we are determined to provide an effective subsidy to farmers that will cater to their necessities. In this way, we can steadily reach our goal in making Tarlac the leader in agriculture. ENVIRONMENT 2. Relative to targeting a sustainable solution to environmental concerns, I shall prioritize the authorship of a statutory regulation towards visualizing and attaining a â€Å"Plastic-free Tarlac†. Major metropolises have already yielded on this scheme; it is of the time and essence that we also take the lead in our region for our mother Earth. 3. On top of this is our winning endeavor of effectively calling the attention of local hospitals of convincing their management to strictly impose the appropriate disposal of biological wastes within their communities. Yet, it is still essential for us to be vigilant particularly for funeral mortuaries and slaughterhouses to conform to the proper procedures on waste management. If the need arises, we shall revise existing local rulings based from national policies like the Ecological Solid Waste Management Act and the Sanitation Code of the Philippines that will give teeth and permissible police powers to implementers as well as to levy for appropriate taxes and in contrast, to offer awards and incentives for those who will conform to this initiative. HEALTHCARE 4. With regards to our championing endeavors on local public healthcare, this representation shall fully devote on supporting through legislature, the award-winning, first field health service info system in the country, the Wireless Access for Health. We all discern that due to its success, it is already well sustained by numerous benefactors. However, this venture still hopes that it acquires a much-needed backing from a statutory perspective especially that it plans to expand soon to other municipalities of the province. 5. Though becoming an effective harbor for individuals who lacks capitals to access medical services locally, the Philhealth ng Masa program similarly requisites stronger legislative measures to ensure that every family shall be covered with affordable and quality healthcare. Utilizing suitable legislation and consistent discourse with Philhealth, we can solicit to this ever-accommodating public insurance figure to be more lenient and adaptable to indigent constituencies – the poorest of the poor, who lack or does not have any notion on how to get credentials necessary for getting covered (like birth certificates, clearances and the likes). Through proper legislation and consideration among concerned bodies, we can shed a light on this and with full hopes find a solution through this dignified chamber. LIVELIHOOD 6. This representation shall also thrust for a sounder investment code that will be adaptable to the needs of prospective investors. This will convey a mutually advantageous atmosphere between the province and investors that is favorable for employment generation. In partnership with corresponding local business chambers, we shall seek help on crafting a measure encouraging upright MFIs coupled with appropriate financial literacy trainings among our constituencies in the rural areas. EDUCATION 7. One of my primary focuses on education is for our province’s technical and vocational schools to come up with efficient curricula for enhancement and assessment of our future labor force. In the advent of the mandatory K-12 program of our national government, these ladderized courses offered by various tech-voc schools shall offer a window of fresh opportunity for our citizens to finish a short course, go out and work, and then return for a more advance course or maybe even move into a university for a degree. The practicality of ladderized education is to be understood as a shining beacon of hope for our indigent constituencies who desire to pursue their dreams through education. PROVINCIAL GOVERNMENT AND LGUs 8. Our commitment with our fellow civil servants and government employees within the capitol workplace and other attached agencies is still deemed precedence where legal mandates are necessary to further redefine and innovate bureaucracy. Aside from streamlining to make our structure more efficient, we should, through legislative courses mechanize ingenious innovations highlighting human resources development and quality management system approaches. 9. Finally, a big fragment of my legislative agenda will focus on our local government units to competently generate revenues so they could come up with ways to solve the long-standing paucity of funds prevalent in them. I know for a fact that we should center our agenda to our districts, for I myself became a part of resolving its scenario, back when I was still the mayor of Gerona. This is of course, plausible with the support of our national, provincial and local governments and different exponents that are willing to work hand in hand for our province. There are big shoes to fill in, especially with these planned initial thrusts and agenda that I personally consider, would be indispensable for this very august chamber to discern and willingly take part of. This representation shall be and will be disposed to accommodate more rightful propositions pertinent to the issues of our times, most prominently those that sways our constituents, a vision that is truly reflective with that of the Sulong Tarlac manifesto. I am similarly poised that through the vitality and aggressiveness of our new vice governor, honorable Kit Cojuangco Jr. , and with your succor, fellow colleagues in this august chamber, we can build a more meaningful purposeful solidarity, regardless of political affiliation, towards formulating an all-inclusive agenda that will hopefully serve as a steadfast, literal ‘sanggunian’ for our counterparts in the seventeen municipalities and in this capital city. Participatory governance is the way to go for I consider it to be a two-way gain between our Sanggunian and these seventeen local Sangguniaans making up the whole province.

Child and young person development Essay

Task 2 – Explain the difference between sequence of development and rate of development and why the difference is important. The sequence of development is the order in which development takes place. Although some stages of development may be missed (for example some babies do not crawl and go straight from shuffling to walking) the sequence is usually followed by children and the order usually remains the same. The rate of development is the time-frame given for the average development of a child expected at a certain age, i.e. at one has started to walk. All children are unique and will develop at their own rate. The rate of development is just a guideline. For example: some babies start teething from 6 months and some of them start at 9 months. Some babies can start making sentences at around 1 year; others can only speak few broken words. Read more: Rate of development  essay The sequence of development generally remains the same. The rate of development can change considerably and many other factors such as individual growth patterns, social background, health and nutrition, disability and learning difficulties can have an effect on it. It is important to know the difference between the sequence and rate of development as it helps to meet the children’s individual needs. It helps you recognise if any children have special educational needs and helps you plan to make sure they are getting the help and support they may need. Practitioners must have a good understanding of the child development rates. Practitioners should: †¢Carry out assessment and observation effectively. It is required for practitioners to make development comparisons between a child’s actual development stage and expected development rates. †¢Offer appropriate activities and experiences. This will be informed by  observation, monitoring and assessment of individual children. †¢Anticipate the next stage of a child’s development. This allows the practitioner to provide activities and experiences that will challenge and interest children, therefore, stimulating the child’s learning development. †¢Notice when children are not progressing as expected. Although children develop at different rates, significant delays in one area or many delays in several areas can be an indication that children need intervention and extra support.

Presence of Death in Literature Essay

Literature often contains themes that allow the reader to relate to the characters. From suicide to murders, death is an inevitable theme seen time and time over not only in real life but also in many types of literary works. It is used by many authors as a main driving force behind the plot as well as a method to add emotions in various works. The presence of death is a reoccurring subject in almost every type of literary work such as novels, short stories as well as plays. Firstly, death is seen in many different novels and is present in almost every genre. Death is even present in many novels aiming for younger readers such as William Golding’s â€Å"Lord of the Flies† and others. In the novel â€Å"Lord of The Flies†, death is a very common subject throughout the story as seen with the deaths of the little’un, Simon and Piggy. For starters, already in the first few chapters, death makes its first appearance as one of the little’uns disappears. â€Å"That little’un-’ gasped Piggy – ‘him with the mark on his face, I don’t see him. Where is he now?† (William Golding, p. 46) The little’un was earlier spotted playing in the forest near the mountain top where an accidental forest fire broke out just few moments after. The little’un with the mark on his face is now nowhere to be found and is presumed dead burnt in the fire. Moreover, death is seen a second time later on in the novel when Simon is attacked by all the boys. After his encounter with The Lord of the Flies, Simon manages to make his way back to Jack’s feast only to find a group of boys caught up in frenzy. In their bewildered state of mind, the savage boys descended upon the innocent child thinking he was the best and violently killed him. â€Å"At once the crowd surged after it poured down the rock, leapt on the beast, screamed, struck, bit, tore† ( William Golding, p.169). Finally, towards the end of the book, death is seen for the third and last time when Piggy and Ralph visit the Castle Rock in hopes of retrieving Piggy’s glasses. However, at the castle rock, the duo encountered and unexpected twist of events which led to Piggy’s death after being crushed by a big boulder of rock thrown by Roger. Although death is seen multiple times in novels, it is also a recurring theme seen in other shorter literary works. Secondly, death is also seen quite often in short stories. Countless authors including Edgar Alan Poe use death as one of the main driving force in there plot line. As a matter of fact, death is seen in almost every Edgar Alan Poe short stories some examples being â€Å"The Tell-Tale Heart†, â€Å"The Cask of Amontillado† and â€Å"The Murders in the Rue Morgue†. To begin with, the theme of death is seen throughout the story â€Å"The Tell-Tale Heart† as the main character plots to kill the old man. At the begging of the story, the main narrator explains that he can no longer stand to look into the elderly man’s fake eye and for that reason he must kill him. After a week of planning, the main character finally puts his plan in motion as he rushes in the old man’s house and crushes him to death under his own bed. â€Å"He shrieked once — once only. In an instant I dragged him to the floor, and pulled the heavy bed over him. I then smiled gaily, to find the deed so far done.† (Edgar Alan Poe, p.5) Likewise, the presence of death is also present in â€Å"The Cask of Amontillado† where the main character Montresor vows revenge to his foe Fortunato for the thousand injuries and bane he has caused him in the past. In that short story, Montresor lures Fortunato in the catacomb where he is then entombed alive and left to starvation. Furthermore, death is also seen in â€Å"The Murders in the Rue Morgue† but this time in a funnier and more farfetched way. In this play, an unnamed narrator and his friend investigate a crime scene only to find out that an Ourang-Outang was in fact the murderer behind the crime. The monkey wield with a razor had completely cut off the head of an old women in her own apartment. â€Å"The throat of the old lady was not merely cut, but the head absolutely severed from the body: the instrument was a mere razor† (Edgar Alan Poe, p.20). Albeit death is constantly seen in many books meant to be read, it is just as present in other literary works meant to be acted out such as plays. Lastly, death is not only seen in books but it is also frequently seen in many known plays. For the past few decades, the presence of death in plays has been seen time and time over by some of the most eminent playwrights including Shakespeare. From suicide to murder, death is present in almost all of Shakespeare plays some of which are â€Å"Romeo and Juliet†, â€Å"Macbeth† and, let’s not forget, â€Å"Hamlet†. In the first place, the presence of death is seen several times throughout the play â€Å"Romeo and Juliet† many of which are resulted in combat such as the deaths of Mercutio, Tybalt and Paris. Although many deaths occur in the pay â€Å"Romeo and Juliet†, the play is most commonly known for the deaths of the star-crossed lovers, Romeo and Juliet. After Juliet drinks a potion to make her seem dead for 2 days in the hopes of escaping a forced marriage, Romeo finds her corpse. â€Å"O my love, my wife! Death, that hath suck’d the honey of thy breath Hath had no power yet upon thy beauty.† (William Shakespeare, Act 5, Scene 3). Thinking Juliet was actually dead; Romeo commits suicide by drinking poison. At Juliet awakening, she is devastated to see her lover’s dead body beside her and decides to stab herself to death. In the second place, death is also seen multiple times throughout the play â€Å"Macbeth†. In this play, in order make the witches prophecy come true, the main character Macbeth killed the King Duncan so as to inherit the throne all and become the new King of Scotland. â€Å"I go, and it is done; the bell invites me. Hear it not, Duncan; for it is a knell. That summons thee to heaven or to hell.† (William Shakespeare, Act 2, Scene 1) Later on in the play, Macbeth then hired murderers to kill one of his former friends as well as a many other noblemen threatening his crown. In the third and last place, the presence of death is also seen in the popular Shakespeare play â€Å"Hamlet†. This play is known for its many deaths throughout the plotline. In the end, almost every round character has been killed. Out of the 12, 10 were either poisoned or drowned. Thus, death is also frequently found in plays. All in all, the theme of death is a major and reoccurring subject that is present in literary works. It is often found in various types of literary works such as novels, short stories and plays. This theme has been used by some of the best authors to ever write for it evokes many emotions. However, there are many other ways the author can use to induce these. Hence, one can wonder about the variety of techniques they use to relate to the readers. Annotated bibliography Mabillard, Amanda. Violence in Shakespeare’s Plays. Shakespeare Online. 2000. (30/10/2012) < http://www.shakespeare-online.com/plays/violenceinshakespeare.html > This website describes every death linked to violence in Shakespeare plays all in separate categories (Suicide, murder, killed in combat, etc†¦) in addition to a brief description of every death. This website helped me not only find the deaths I wanted to talk about in my essay but also helped me find quotes for every cases of death. Golding, William. Lord of the Flies. New York: Capricorn Books, G.P. Putnam’s Sons, 1954. The book Lord of the Flies was really helpful to me to find quotes for my first argument as well as to make links with deaths in literature for a novel. Because of the novel’s pretty high count of death, I was able to establish a multitude of different links to my essay that bears with the presence of death. William Shakespeare, ed. Cyrus Hoy. Romeo and Juliet (Norton Critical Editions). New York: Norton, 1992 The Shakespeare play â€Å"Romeo and Juliet† was helpful for my essay because it was one of the plays I used to link to the presence of death. In addition, â€Å"Romeo and Juliet† is home to the most famous death in literature and had to be inserted in my essay. William Shakespeare, ed. A. C. Bradley. Shakespearean tragedy: Macbeth. New York: Penguin, 1991. The Shakespeare play â€Å"Macbeth† was useful to my essay for many reasons. For starters, I had just finished reading this book before writing my essay which made it easy to make links between the presence of death in literature and this book. Also, like most of Shakespeare plays, â€Å"Macbeth† contains a lot of death’s which made it even easier for me to link it to my essay. Weller, Philip. Hamlet Navigator. Shakespeare Navigators, (21/11/2012). < http://shakespeare-navigators.com/hamlet > This website contains all information that there is to know about Shakespeare (quotes, themes, scenes etc†¦). Although I did not use this site for a lot, it helped me make my annotated bibliography for every Shakespeare play I used in this essay. SparkNotes Editors. SparkNote on Poe’s Short Stories. SparkNotes LLC. 2002. (18/11/2012) < http://www.sparknotes.com/lit/poestories/section5.rhtml > This website is a summary of Edgar Alan Poe’s â€Å"The Murders in the Rue Morgue† which was really helpful for me to understand the plot of the story without having to read the entire short story. I also found quotes on this website.