Crime And The Death Penalty Essays - Capital Punishment, Penology

Crime and the Death Penalty For most crimes committed in the United States a fine, sentence of time in jail or execution is the punishment. However, the death penalty is the most questionable punishment. Is it morally right? Is it effective in deterring crime, primarily murders? Weather or not you agree if it is moral or not, one issue remains. The death penalty is not an effective way to deter crime. The death penalty has existed as long as humans have existed. The quote "an eye for an eye" is found in the Bible. In the middle ages fines, public humiliation and imprisonment were appropriate punishments for all crimes, and death penalty for all murders. Today, Federal law states that the death penalty is to be enforced with convicted criminals for: treason; deserting armed forces during wartime; murder committed by a soldier; kidnapping and murder that involves crossing state lines; murder committed during an airplane hijacking; and of course, homicide. The death penalty is also called for punishment of for: attempting to kill anyone investigating or prosecuting his or her activities; advising, directing, authorizing or assisting in the murder of someone. Also, The Anti-Drug abuse act of 1988 calls for the death penalty for all drug related killings. Along with that, The bill amending sec. 848 to controlled substances act calls for the death penalty or life imprisonment for certain drug offences possession of 10 or more kg of heroin, cocaine, phencyclidine or analogue. Added to that, The drug kingpin act sates the use of death penalty for convicted major drug dealers caught with huge quantities of drugs, over 66 lbs. of heroin and 330 lbs. of cocaine. Even though there are these federal laws requiring the use of the death penalty for the crimes, State laws only consider one crime, murder, to be a capital offense. In the United States alone there have been 4047 executions since 1930, and 188 were from 1977-1996. In 1996, there were a total of 15,168,100 arrests; 33,050 for forcible rape; 1,506,200 involving drug violations and 19,020 for murder and non-negligent manslaughter. The death penalty was enforced 45 times. The death penalty is an expensive punishment, since 1976 the united states have spent 700 million dollars in it. Methods of the death penalty include lethal injection, gas chamber, electric chair, hanging and fire squad. In a 1986 poll 70% of Americans favored the death penalty as a punishment for murder. There have been many comparisons of crime rates of death penalty states to non- death penalty states. These clearly show that the death penalty has no effect on the deteration of crime. The homicide rates in Michigan, Ohio and Illinois rise and fall along with Wisconsin. Michigan, Ohio and Illinois all have the death penalty. Wisconsin does not. In 1994, the average murder rate in a death penalty state of a population of 100,00 was 8.0, for a non-death penalty state, 4.4. In Canada the homicide rate per 100,000 people was 3.09 in 1975, this was when they had the death penalty. In 1976 Canada got rid of the death penalty. In 1986 the crime rate decreased to 2.19 per 100,000 people, the lowest in 15 years. Isn't it odd that the crime rates were high with the death penalty and low without? Clearly this shows that the presence of the death penalty has no effect on the increase or decrease of crime rates. Even with the death penalty, crime rates continue to rise and fall in the United States. The number of people on death row in 1967 were in 1972: 200 and in 1997 3,100. Crimes will be committed weather or not death penalty is a method of punishment. Many people believe that the death penalty isn't an effective way to deter crime. "The proposed drug death penalty is not only barbaric but also foolish: a temper tantrum masquerading as an act of government. It holds no promise for suppressing the drug trade, and may even be counterproductive" (Franklin E. Zimny) Time magazine, 1997 said 52% of Americans do not believe the death penalty deters people from committing crime. In a recent poll of police chiefs, 2/3 said they don't believe the death

Understanding Participial Phrases

Understanding Participial Phrases A participial phrase or clause is a wonderful tool for writers because it gives color and action to a sentence. By employing verbals- words derived from a verb- along with other grammatical elements, an author can craft clauses that function as an adjective, modifying nouns and pronouns. The participial phrase contains a participle and the other words in the phrase that modify the noun or pronoun. They cant stand alone as complete sentences. Present or Past Participial phrases or clauses consist of a present participle  (a verbal ending in ing) or past participle (a verbal ending in en ed,  d, t, n, or ne), plus modifiers, objects, and complements. A participle may  be followed by  an  adverb, a  prepositional phrase, an  adverb clause, or any combination of these.  They are set off by commas and function the same way adjectives do in a sentence. Past-participial phrase:  Invented by an Indiana housewife in 1889, the first dishwasher was driven by a steam engine.Present-participial phrase:  Working before unfriendly crowds, the referee has orders to exude poise under the most trying circumstances. Here, for example, the participial phrase consists of a present participle (holding), an object (the flashlight), and an adverb (steadily): Holding the flashlight steadily,  Jenny approached the strange creature. In the next sentence, the participial phrase includes a present participle (making), an object (a great ring), and a prepositional phrase (of white light): Jenny waved the flashlight over her head,  making a great ring of white light. Placement and Punctuation Participial phrases can appear in one of three places within a sentence, but  be careful not to risk awkwardness or confusion by placing it too far from the word it modifies. For example, a participial phrase that indicates a cause usually precedes the  main clause and sometimes follows the  subject, but only rarely appears at the end of the sentence. No matter where they are, they always modify a subject. Correctly punctuating a sentence that contains such a clause depends on where it is placed in reference to the subject. Before the main  clause, the participial phrase is followed by a comma: Speeding down the highway, Bob didnt notice the police car. After the main clause, it is preceded by a comma: The gamblers silently arranged their cards, losing themselves in thought. In mid-sentence position, it is set off by commas before and after: The real estate agent, thinking of her profit potential, decided not to buy the property. In each sentence below, the participial phrase clearly modifies the subject (my sister) and suggests a cause: Discouraged by the long hours and low pay, my sister finally quit her job.My sister,  discouraged by the long hours and low pay, finally quit her job. But consider what happens when the participial phrase moves to the end of the sentence: My sister finally quit her job,  discouraged by the long hours and low pay. Here the logical order of cause-effect is reversed, and as a result, the sentence may be less effective than the first two versions. While the sentence absolutely works grammatically, some may misread that the job is feeling discouraged, instead of the sister. Dangling Participial Phrases Although participial phrases can be an effective tool, beware. A misplaced or dangling participial phrase can cause embarrassing errors. The easiest way to tell whether a phrase is being used correctly is to look at the subject it is modifying. Does the relationship make sense? Dangling phrase: Reaching for a glass, the cold soda called my name.Corrected phrase: Reaching for a glass, I could hear the cold soda calling my name. The first example is illogical; a bottle of soda cant reach for a glass- but a person can pick up that glass and fill it. Be careful when combining sentences and converting one to a participial phrase to keep the subject of the sentence that goes with the adjectival phrase. For instance, you wouldnt want the following sentences: I curled my toes and squinted.The doctor prepared to puncture my arm with a needle. to turn into: Curling my toes and squinting, the doctor prepared to puncture my arm with a needle. Here the participial phrase refers to  the doctor  when it should refer to  I- a pronoun thats not in the sentence. This kind of problem is called a  dangling modifier, dangling participle, or misplaced modifier. We can correct this dangling modifier either by adding  I  to the sentence or by replacing the participial phrase with an  adverb clause: Curling my toes and squinting,  I waited for the doctor to puncture my arm with a needle.As I curled my toes and squinted, the doctor prepared to puncture my arm with a needle. Gerunds vs. Participles A gerund is a verbal that also ends in ing, just like participles in the present tense. You can tell them apart by looking at how they function within a sentence.  A gerund functions as a  noun, while a  present participle functions as an adjective. Gerund:  Laughing  is good for you.Present participle: The laughing woman clapped her hands with joy. Gerund Clauses vs. Participial Phrases Confusing gerunds or participles can be easy because both can also form clauses. The simplest way to differentiate the two is to use the word it in place of the verbal. If the sentence still makes grammatical sense, youve got a gerund clause: If not, its a participial phrase. Gerund phrase: Playing golf relaxes Shelly.Participial phrase: Waiting for takeoff, the pilot radioed the control tower.

Translation review 2 Essay Example | Topics and Well Written Essays - 1000 words

Translation review 2 - Essay Example nsists that this event can serve as one of the best opportunities for the promotion of linguists and cross cultural studies and the linguist experts can play an effective role in the entire scenario. The article tells that spectators from all over the world are expected at London during the grand event of Olympic and Paralympics Games in 2012. The gathering of people belonging from over 220 countries would be an excellent example of cultural diversity because the capital city of UK will act as a global city by welcoming people from different languages and cultures. The event will show the rich capacity of the city to absorb different type of cultures and languages. The management of the games has also constituted a delegation of 30 people who speak 28 languages and act as a connecting thread for the people belonging to different cultures and groups. The event will efficiently work for the promotion of the linguistics and cultures and the linguists will also find excellent opportunities during these sports events. The author points out in the article that international sports events always serve as opportunities for the promotion of linguistics and cultures and the linguists have great scope of working during such events. For example, during the sports events of Barcelona Games, Seoul Games, Atlanta Games and Sydney Games, the management hired the services of linguist professionals to perform different linguist services and like these events, the Olympics and Paralympics 2012 also offer different opportunities for the linguist experts. The importance of these events from the linguists and cultural point of view has been widely recognized. These events are viewed as excellent opportunity as well as great challenge for the linguists experts and different professional linguists associations like the Association of Translation Companies (ATC), Chartered Institute of Linguists (IOL), Institute of Translation and Interpreting (ITI) and International Association of

The Impact of the Euro Since Its Launch Dissertation

The Impact of the Euro Since Its Launch - Dissertation Example The Euro is one of the stable currencies in the world. It is the official currency of the eurozone which consists of 17 member states of the European Union. The euro was introduced as an accounting currency on 1 January 1999. The notes and coins for the euro were brought into circulation on 1 January 2002. In the period between the introduction of the currency and the advent of its notes and coins, the preceding currencies’ notes and coins were accepted, however such currencies were fixed against the euro. The significance of the currency on a global scale can be determined by the fact that it has become second largest reserve currency in the world. Apart from that, it has also become second most traded currency all over the world after the US $. According to the statistics released by European Union, more than â‚ ¬800 billion were in circulation as at June 2010. The euro has surpassed US$ in the combined value of notes and coins in circulation all over the world. According to the estimates released by IMF, eurozone is the second largest economy in the world. Many US economists had criticized the idea of a currency such as euro. According to such economists, euro was bound to be a failure and it would not last for so long. However, euro surpassed everyone’s expectations and in a very short period of time, it evolved to be one of the most powerful currencies in the world. Most economists were against the idea of monetary unification however the success of euro proves that mone tary unification is an evolutionary process. ... However, euro surpassed everyone’s expectations and in a very short period of time, it evolved to be one of the most powerful currencies in the world. Most economists were against the idea of monetary unification however the success of euro proves that monetary unification is an evolutionary process. From these facts and figures, it can be inferred that euro has become one of the most powerful currencies in the world and it has significant impact on the global economy. 2. Euro as Reserve Currency In order for a currency to be a favoured reserve currency, it must have well developed financial markets. The euro was formed after the unification of 17 currencies of the member states of the European Union. The unification strengthened the euro financial markets and it lowered the macro-economic risks of the countries in eurozone. This was one of the reasons why euro became one of the biggest reserve currencies all around the world. It inherited its reserve status from the currencie s that dissolved into euro. Before the introduction of euro the overall share of US$ as reserve currency was 70.9% which dropped to 64% in the year 2008. On the other hand, the inherited proportion of the euro as reserve currency was 17.9% in the year in which it was introduced, i.e., 1998. One of the reasons behind the euro’s status of one of the most reserve currencies is due to German Mark. The proportion of euro as reserve currency increased to 26.5% in the year 2008. The euro has significantly affected the status of US$ as a reserve currency. Most economists are also debating the possibility of the euro replacing the US$ as the most held reserve currency. According to David

Assignment Example | Topics and Well Written Essays - 500 words - 18

Assignment Example Mac Taylor (Gary Sinise) heading the team. Since the workplace setting is at the NYPD, the communication patterns exemplified and manifested in the series are comprised of highly professionalized with technical forensic details on the crimes the group intents to solve. Verbal communication patterns showed the relaying words which are clear and understandable despite differences from the cast’s ethical or educational backgrounds. Since the team is comprised of forensic investigators, the quality of information relayed manifests highly professional orientations with topics on medical diagnosis and prognosis of death being exchanged. Non verbal communication patterns through facial expressions, gestures, eye contacts, body signals are abundantly used due to the delicate nature of work being done on the scene. When investigations require silence because of the need to keep some pieces of information confidential until duly examined, the use of nonverbal communication patterns reveal the emotions and intents of the cast. The television series exemplifies that effective communication is relayed despite diversity in gender, race or cultural background through the use of both verbal and nonverbal communication patterns which are clearly understood by a team of highly professional people delving into a common goal: to solve crime at the most effective and scientific way. Another television series located in a fictitious William McKinley High School in Lima, Ohio, uses the school as a workplace setting where various experiences of students with vocal talents are explored. The series is categorized as a musical comedy which earned various awards and citations. However, due to the enormity of characters presented in the series, the interplay of communication patterns was mainly focused and expressed through songs as the medium of self-expression. There are lots of power plays being manifested

Analysis of Data Security in Wireless Networks

Analysis of Data Security in Wireless Networks Chapter 1: Introduction Research Method Research is defined as search for new knowledge or an art of scientific and careful investigation of new facts. Research method is referred as a systematic methodology of defining and re-defining the problems, suggest solutions, formulate hypothesis, evaluate the data, make deductions and then reach conclusions. At last, test the conclusions to determine whether they are suitable for the formulating hypothesis or not (KOTHARI, C. R., 2005). The research method chosen for the present study are case studies. Case study research is used because of its capability to bring a clear idea on any complicated issue and thereby strengthening the previously developed research works. A key characteristic of case study research method is its ability to provide multiple sources of evidence each with its strengths and weaknesses (Bill Gillham, 2000). The steps involved in case study research method are as follows: Getting Started The research work started with the collection of data on Wireless Sensor Networks. Sensor networks are referred as secured networks if they can provide end to end security with authenticity and confidentiality. The present research work emphasizes the importance of providing data security in sensor networks through Location-Aware End-to-end Data Security system. Selecting Cases Selection of cases is an important aspect of building theory from case studies. The earlier stages of the research work focused on various security systems and then identified Location-Aware End-to-end Data Security system for providing data security in sensor networks. Literature review section of this research work will explain all these aspects very clearly. Case study research method is quiet difficult as it provides multiple sources of evidence in its research. So to develop this research work, data was collected from various sources like books, journals, articles and online websites. Crafting Instruments and Protocols After the collection of data related to sensor networks and its importance in the field of providing security for networks it was analyzed that efficient steps must be followed by the organizations to provide security for sensor networks. In order to provide an efficient data security system for sensor networks, the research work was customized a number of times. All the design principles were considered for improving the security in sensor networks so to implement better communication networks. Entering the field After gathering the information related to wireless sensor networks from various sources like websites, journals, articles and books. The information gathered gave a better understanding on Location-Aware End-to-end Data Security system for providing data security in sensor networks. Analyzing data The case study research method primarily concentrated on Location-Aware End-to-end Data Security system for providing data security in sensor networks. The data collected for this research work was analyzed using various methods and techniques. This analysis helps to find the link between the research objects and outcomes with respect to the present study thereby providing an opportunity to strengthen the research findings and conclusions. Shaping hypotheses The task of shaping hypotheses is mainly applied for the alteration or modification of models applied for the research work previously. The new models applied in the research depend upon the data analysis. Enfolding literature After the analysis stage which was helpful in assessing the proposed solutions related to the problems occurred by disasters then a detailed critical analysis will be presented in literature review section that will evaluate the existing security designs so as to improve the performance of sensor networks. Reaching closure From the start of the research work to the analysis stage it was analyzed that providing efficient security for sensor networks is very important as it increases the life of networks and improves the efficiency of networks. Background study of Wireless Sensor Networks Wireless Sensor networks will fall under the category of modern networking systems. It has emerged in the past and caters the needs of real world applications. These networks are the preferred choice for the design and development of monitoring and control systems. In the year of 1940s and 50s wireless sensing technology was developed. To discover and chase enemy craft this was used by military (Shimmer, 2006). The technology formulated to let in radio frequency identification and real time location system but the real force behind wireless sensor network was the power to place detectors in remote or in the environment without wired lines. This allows in turn for capture and analysis of information to transmit warnings and to identify the approaching phenomenon. The quality of life by allowing real time information was developed by WSNs. WSNs supply real world information in a perceive manner rather than a virtual world (Shimmer, 2006). As the health of the people is becoming worse a nd the global population is getting older, with the ability to sense and perform direct measurements biometric solutions can be created which will improve the healthcare and improves the quality of life. As one of the key drivers for wireless sensor networks data will be captured and analyzed for detecting and predicting the phenomena like falls and warnings to develop intelligent solutions for industry. Chapter 2: Literature Review 2.1 Overview Providing security for data in Wireless Sensor Networks (WSNs) is a difficult task because of complexity in managing the critical resource. Data security in sensor networks can be achieved by Location-Aware End-to-end Data Security system. A sensor network can called as secured if it can provide end-to-end security through data confidentiality, authenticity and availability. Applications like wildlife monitoring, manufacturing performance monitoring and military operations use wireless sensor networks. Security is the most important requirement for all these WSNs applications. Providing security in wireless sensor networks is different from traditional approaches because of resource limitations and computation restrictions. Node compromise attacks, DoS attacks and resource consumption attacks are the most general attacks in the wireless sensor networks while providing security to the data. This research concentrates on wireless sensor networks, data security in sensor networks, Locat ion-Aware End-to-end Data Security (LEDS) systems and its performance in providing data security. 2.2 Wireless Sensor Network Wireless Sensor Network is a fast growing technology and has exciting research area. Military and civilian activities can be operated successfully using this network. Interconnection between thousands of sensor nodes in large sensor networks can create technical issues (LEWIS, F. L., 2004). To offer a high quality sensing in terms of space and time the sensing nodes are closely arranged and are made to work together. This technology is responsible for sensing and also for the first stages of the processing hierarchy. Computations, communication capacities, memory, low cost devices which have limited energy resources are included in the network. One of the major applications of sensor networks is actuators. This type of sensor networks is widely used in many sectors like military applications, environmental applications and commercial applications (RAGHAVENDRA, C. S., Krishna M. Sivalingam and Taieb F. Znati, 2004). Networks can be organized in multi-hop wireless paths and large lands capes in order to recognize the events of interest. Industries attain security and safety by making use of wireless sensor networks. This network uses sensors for the detection of toxic, harmful and unsafe materials and also provides a way for the identification of leakages which may cause dangerous results. These networks are best suitable for monitoring and help in controlling rotations in moving machinery (Edgar h. Callaway, 2003). Wide usage of sensor networks in large applications forces the network to provide security for data in order to operate the applications effectively. Security is the major issue faced by wireless sensor networks. The main reason for security problems in sensor networks is hold of data by attackers. If number of nodes increased in communication then there may be chance for tampering the data which may create the problem of data loss (CHAN, H. and PERRIG, A., 2003). This sensor network helps in expanding the internet into physical space. Compared to customary approaches wireless sensor networks provide many advantages. Information in sensors networks is available only at runtime. Sensors networking is done by contribution from signal processing, database and information management, embedded systems and architecture and distributed algorithms. Much number of sensors is already in use for monitoring the traffic in networks (Feng Zhao and leonidas J. Guibas, 2004) The organization growth reduces internally by loss of important data and due to false data introduced by hackers in network.However, the lack of end-to-end security guarantee makes the WSN weak due to the attacks. Functions in the networks are injured by internal attacks which lead to breakdown of mission-critical applianc es (Elaine Shi and PERRIG, A., 2004). Hence from the above discussion it can be understood that wireless networks leads to a new trend as the way of interchanging of data through internet service like e-mail and data file transfers is increasing tremendously. WSN is used in many martial appliances. As these networks provide many benefit for organizations and users it lacks in providing security to data while transferring. Wireless sensor networks play a vital role in transferring the data from one network to another without any delays or disturbances. The functionality and behavior of the WSN are completely dissimilar from the other wireless network devices present in WSN.WSN are not assured by the users. In terms of battery and power these devices are much more restrained. The WSN can be separated into two parts Data acquisition and data dissemination network. Data acquisition network consists of sensor nodes and base stations. Sensor nodes are the accumulation of small devices wit h the charge of assessing the physical information of its setting, and base stations are influential devices in case of gathering information of its surroundings. Sensor networks are mainly projected for real-time collection and analysis of low level data in aggressive environments (Javier Lopez and Jianying Zhou, 2008). For this reason they are well fitted to a significant amount of monitoring and observation applications. Famous wireless sensor network applications involve wildlife monitoring, bushfire response, military command, intelligent communications, industrial quality control, infrastructures, smart buildings, traffic monitoring and examining human heart rates etc. greater part of the sensor network are spread in aggressive environments with active intelligent resistance (Feng Zhao and Leonidas J. Guibas, 2004). Hence security is a crucial issue. One obvious example is battlefield applications where there is a pressing need for secrecy of location and resistance to subvers ion and destruction of the network. 2.3. Evaluating the existing security designs in WSNs Evaluation of existing systems can be done with the help of data security requirements like data authentication, availability and authentication. Security is not provided efficiently by the existing systems due to weak security strengths and is exposed to many different attacks. Security authentication tools such as authentication and key management. These tools provide various security mechanisms for sensor network. Routing and localization are supports sensor network (Donggang Liu and Peng Ning, 2007). Similar to the traditional networks most of the sensor network applications need security against introduction, and modification of packets. Cryptography is the standard defense. Interesting system tradeoffs grow while comparing cryptography into sensor networks. For point-to-point communication, continues cryptography attains a high level of protection but involves those keys to be set up among all end points and be in companionable with passive participation and local broadcast (C. S. Ragahavendhra, Krishna M. Sivalingam, Taieb F. znati, 2004). Link layer cryptography with a network wide shared key simplifies key setup and supports passive participation and local broadcast but intermediate nodes might alter messages. The earliest sensor networks are likely to use link layer cryptography because this approach supplies the greatest ease of deployment among presently available network cryptographic approaches. Subsequent systems may react to demand for more security with more advanced use of cryptography. Cryptography implies a performance cost for extra computation that frequently gains packet size. Cryptographic hardware support increases efficiency and also increases the financial cost of implementing a network. Limitations of existing key management schemes From many past years many different pre-distribution schemes have been proposed. Hop-by-hop is one of the techniques which dont provide end-to-end security in a proper manner. This hop-by-hop not only involves the end points but also have the intermediate components for data forwarding. Hop-by-hop header carries information which should be examined by each and every node along the packet path. As this technique involves each node referencing and processing it becomes complex in analysis of networks (Alberto Leon Garcia and Indra Widjaja, 2004). Data authentication and confidentiality is very much vulnerable to inside attacks and the multi hopping makes a worse while transmitting the messages. The problem of distributing and updating cryptographic is to valid member is known as Key Management. The key management is one of the most important tasks in the cryptographic mechanisms for networks. However the sensor networks, the key management is one of the more challenging network because there may be no central authority, trusted third party, or server to manage security keys. The key management performed in the distributed way. The self organization scheme to distribute and manage the security keys proposed (Yang Xiao, 2006). This system certificates are stored and distributed to the user by themselves. False data filtering and their analysis This helps in protecting data from validation in WSNs. Data that is not authorized will be filtered out by the transitional nodes. Location Based Resilient Secrecy (LBRS) is the proposed scheme that identifies the problems and errors in Statistical En-route Filtering (SEF) and Interleaved Hop-by–Hop Authentication (IHA). All these methods are highly exposed to interference attacks and selective forwarding attacks (kui Ren, Wenjing Lou and Yanchao Zhang, 2008). SEF helps in detecting and dropping the false reports during the forwarding process that contains Message Authentication Codes (MAC) generated by multiple nodes (Anne-Marie Kermarrec, Luc Bouge and Thierry Priol, 2007). IHA identifies the fake reports by using interleaved authentication 2.4. Data Security Requirements in Wireless Sensor Networks (WSNs) As wireless sensor networks usage is increasing in organizations, security should be provided for data in order operate organizations successfully. Data security in wireless sensor networks includes data authentication, data availability and data confidentiality. Data should be available for authenticated users only in order to provide security. Various data security requirements for wireless sensor networks are (Kui Ren, Wenjing Lou and Yanchao Zhang, 2008): Data availability Data Confidentiality Data authentication Data integrity Time synchronization Secure Localization Data availability – To ensure availability of message protection in sensor network it should protect the resources or sensor nodes. Nodes in sensor networks should be guarded from unnecessary processing of messages. Avoiding unnecessary processing can reduce the energy usage so that the life time of sensor network increases. Wireless sensors are influenced by many factors like limited communication capabilities and computation. Wireless sensor networks are vulnerable to various attacks like Denial of Service attacks, node compromise attack and resource consumption attack (Shinqun Li, Tieyan Li and Xinkai Wang, 2002). Hence, in order to provide availability and security resources should be maintained effectively. Data Confidentiality – In wireless sensor networks confidentiality can be achieved by allowing only authenticated users to access the data. In sensor networks data can be secured by using cryptographic methods. Using encryption and decryption for data allows only authenticated users to access the data. Unauthorized or third parties cannot read the original data if confidentiality is provided effectively (Chris Karlof, Naveen sastry and David Wagner, 2004). Hence to have confidentiality for data wireless sensor networks should make of encryption methods. Data authentication – Authentication is necessary for controlling the sensor networks effectively. Data authentication in sensor networks allows the users to verify whether the data is sent from authorized resources or not. It also protects the original data from alterations. Digital signatures can be used for authentication in sensor networks (Mona Sharifnejad, Mohsen Sharifi and Mansoureh, 2007). Hence, authentication in sensor networks can be achieved with digital signature which helps in authenticating the senders. Hence from the discussion it can be given in order to provide security data availability, authentication and confidentiality should be sustained in sensor networks. Data Integrity Data integrity in sensor networks is required to check the dependability of the information and concerns to the capability, to support that message has not been corrupted, altered or changed. Even if the network has confidentiality measures, there is still a possibility that the data integrity has been compromised by alterations (Richard Zurawski, 2006). The integrity of the network will be in trouble when the malicious node present in the network throws fake data. Wireless channel cause damage or loss of data due to unstable conditions. Hence from the above it can be given the information provided by the sensor network is easily corrupted which can leads to loss of data. Time Synchronization Most of the sensor network applications trust on some form of time synchronization. Moreover, sensors may wish to calculate the continuous delay of a packet as it moves among two pair wise sensors. For tracking the applications a more collaborative sensor network may involve group synchronization. Secure Localization The usefulness of a sensor network will trust on its ability of each sensor to accurately and mechanically locate in the network (G. Padmavathi and D. Shanmugapriya, 2009). A sensor network planned to locate faults and it need accurate fixed information in order to identify the location of a fault. In this an attacker can easily misrepresent non secured location information by giving false signal strengths and playing back signals. Hence from the above content it has discussed about the security goals that are widely available for wireless sensor networks. 2.5. Proposing Location-Aware End-to-end Data Security (LEDS) LEDS helps in providing safety to data in a well-organized way. Security to data is provided through confidentiality, authentication and availability in LEDS. This mechanism has the ability to provide en-route filtering and end to end authentication. It makes use of key management for achieving data security. LEDS can be used either in small networks or large networks (Ed Dawson and Duncan S. Wong, 2007). LEDS splits the whole network into small cell regions and sends keys for each cell in order to provide security. Cell size of LEDS depends on the number of keys distribute and it does not support dynamic topology. Sensors helps in finding events that are occurring in network. Encryption of events is happened in networks by sensor nodes which are participating in the network. In order to encrypt the events LEDS uses the pre distributed cell keys (Abu Shohel Ahmed, 2009). Sensor nodes calculates unique share key for sensors after encrypting the data, where this is demonstrated using d ifferent sinks. Sensor nodes use authentication keys for calculating MACs. To avoid duplicate reporting each and every report is given with different MACs. A report or data validity will be checked at each and every node while broadcasting through networks in order to provide data security (Fan Ye, Hao Yang and Starsky H.Y. Wong, 2006). Hence from the above discussion it can be understood that, LEDS mechanism helps wireless sensor networks in providing end to end security. This mechanism makes use of key management in order to provide data authentication, confidentiality and availability. The main aim of designing LEDS is to provide end to end data security through data confidentiality, authenticity and availability. LEDS has the capability of preventing false data report attacks. Brief description of the goals of designing LEDS: Provide end-to-end data confidentiality and authenticity: Event reports in wireless sensor networks can maintain authenticity and confidentiality if the sending nodes themselves are not compromised for data corruption. Compromised nodes may affect the neighbor node performance. Cryptographic methods are used to protect data from attackers which is collected from compromised nodes. Key management assists in providing data authenticity and confidentiality by LEDS (Jun Luo, Panos Papadimitratos and Jean-Pierre Hubaux, 2007). In LEDS key management mechanism the nodes use keys for applying cryptographic methods on data in order to provide security. Achieve high level of assurance on data availability: If any attack occurs on data in wireless sensor network, then it should be flexible in selecting alternative ways for forwarding the data. In order to ensure availability, networks should be able to detect and drop the duplicate reports in an efficient and deterministic manner (Kui Ren, Wenjing Lou and Yanchao Zhang, 2008). LEDS assures data availability in the networks by identifying the duplicate reports early in the networks. Hence from the discussion it can be understood that, LEDS was designed for providing security in the wireless sensor networks. False information reports can be eliminated by using some LEDS mechanisms in networks. 2.6. Components of Location-Aware End-to-end Data Security To provide data security, LEDS makes use of two major components: Location-aware key management framework. End-to-end data security mechanism. LEDS provides end to end security by providing data authentication, confidentiality and availability. 2.6.1. Location-aware key management framework As wireless sensor networks are used in wide range of applications it should be deployed correctly in order to collect data. Network planners should give a framework before organizing in order to have security to data. LEDS makes use of key management in providing framework for the sensor networks. Using Key management in LEDS exploits the static and location-aware nature of wireless sensor networks (Reihanah Safavi Naini, 2008). Key management adopts a grid structure for redistributing and examining specific properties related to designing process. For providing a light-weight and robust location aware key management framework for sensor nodes in network preloaded keys are distributed in networks. This framework can be understood through embedding location information into the keys. Framework using key management should be derived in such a way that it should provide data authentication, confidentiality and availability (Yan Zhang, Honglin Hu and Masayuki Fujise, 2006). In LEDS ever y sensor node computes three different types of location-aware keys for distributing purpose. A sensor node computes two unique secret keys which can be shared between a node and sink. These keys help in providing node to sink authentication. A cell key will be distributed between two nodes in the same cell. Confidentiality to data in Wireless Sensor Networks is given by distribution cell keys among network elements. A set of authentication keys can be distributed among the nodes in the network in order to provide authentication to the nodes. This distributing of keys can help sensor networks in data filtering. A Sensor node in the network computes the location-aware key independently. Key management provides basis for end to end data security (Kui Ren, Wenjing Lou and Yanchao Zhang, 2008). Key management strategies for wireless sensor network have proposed recently existing keys which are based on pre-distribution where a probabilistic access for fixing up session keys among adjace nt nodes. Random key Pre-distribution schemes are dangerous to selective nodes and node replication attacks. These frequent attacks can be prohibited by the location aware key management. More challenges are to be taken by the location aware key management such as connectivity within the groups, deployment flexibility and security resilience (Xiaofang Zhou, 2006). Existing strategies need the deployment data as a priority before the deployment. This makes it very hard in major applications. Hence from the above discussion it can be concluded that, for developing a structure for WSN LEDS uses the key management technique. In this framework the safety to data is given by the distribution of keys between sensor nodes. Different location-aware keys computed from sensor nodes can provide data confidentiality, authentication and data filtering. 2.6.2 End-to-end data security mechanism Security is the main issue in transformation of data over internet or any wired or wireless communication. Several encryption methods are implemented and deployed in organization for providing security to data. Network smart cards supports networking mainstream standards and secured protocols. Private data can be sent from smart cards to remote server by establishing a secured connection between network smart cards and trusted remote internet server. This mechanism helps in avoiding manual type for confidential information. End-to-end mechanism struggle in identifying threat mechanism that will capture the data before it is encrypted (Yuliang Zhenq, 2004). Specificdevices and protocols can be installed at the end point connection for offering end to end security. Hyper text Transfer Protocol (HTTP) connection is an example of end-to-end connection to web server where an IP security is used as end-to-end security. There is an opinion that end-to-end security mechanism provides solutio ns in providing security to network based systems. Wireless sensor networks usually consist of a prominent number of resource constraint sensor nodes which are distributed in neglected uncongenial surroundings, and therefore are displayed to more characters of serious insider approaches due to node cooperation. Existing security designs generally supply a step by step security prototype and are exposed to such attacks (Claude Castelluccia, 2005). Moreover, existing security designs are also exposed to several DOS attacks such as report disruption attacks and selective forwarding attacks and thus put information accessibility at stake. To overcome these exposures for major static WSNs come up with a location-aware end-to-end security framework in which secret keys are bound to geographic locations (frank Stajano , Catherine Meadows, Srdjan Capkun and Tyler more, 2007). This location alert property successfully limits the impact of settled nodes only to their locality without involvin g end-to-end data security. The suggested multi functional key management framework checks both node to sink and node to node authentication along with the report forwarding routes and the suggested data delivery access assures effective en-route fake data filtering, and is highly influential against DOS attacks. In end-to-end security the end points refers to connection between client and server. Providing security is the major constraint for transferring data in a secured manner. For providing end-to-end secure communication constrains components like (Michael H. Behringer, 2009) Identity- which helps in identification of entities at both the ends Protocols- to provide required security functions protocols are implemented with the help of algorithms. Security- the end points used by network should be provided with secured protocols and the operations implemented on the end points should be in a secured manner. Thus from the above context it can be given that networks which uses end-to-end security mechanism provides a great security. In spite of having some potential problems end –to-end security many of the organizations are deploying this type of mechanism. End-to-end security protocols and their clarification acts as keystone in having security for the networks. 2.7. Security and performance analysis of LEDS Location aware End to end Data security design (LEDS) function is to anticipate the security and analyze in diverse etiquette. Digital systems afford the sanctuary by means of sundry techniques. In providing the security features researchers generate innovative services for improving the recital and trustworthiness of single technique algorithm (Sam Brown, 2002). Along with security the performance, hardware and software implementations are focused, transparency of the requirements as well as performance and productivity. The factors that involves in escalating this technology are Viability, power consumption, area, complexity, Flexibility. Security analysis can be explained in three dissimilar ways (Kui Ren, Wenjing Lou and Yanchao Zhang, 2008): Data Confidentiality as the security strength Data Authenticity Data Availability Data Confidentiality as the security strength: The requirement of provide data confidentiality within the internal network can be met using the same deployment and management approaches used. Using of the data encryption standard the confidentiality of encryption could be obtained. Data Confidentiality is also used in the Marketing and Sales (John W. Ritting House and James F. Ransome, 2004). In LEDS every report is encrypted by the corresponding cell key and therefore no nodes out of the event cell could obtain its content. Node from the event cell is compromised as the attacker obtains the contents of the corresponding reports because of the data confidentiality. Scheming total network cells number of compromised nodes and portion of compromised cell were utilized. There are two ways for calculating they are Random node capture attack and selective node capture attack. The above figure shows the data confidentiality in LEDS. One has to be clear that in compromising 40% of total cells at least 5% of the total nodes are to be compromised. Along with random node capture attacks accessible defense designs in which compromising a few hundred nodes usually compromise even in all the network communication, which specifies the dominance of the altitude in litheness. Data Authenticity By using diverse online techniques authenticity of data is accomplished. Significance of the data generation determines the position of the obligation (Chris Mann and Fiona Stewart, 2000). Security strength of LEDS regarding the data Authenticity is obtained by the content o

Larry Ellisons Contributions to Computer Technology Essay -- Technolo

Abstract Larry Ellison is among the top names in the computer industry. He has been fiercely competitive with Bill Gates over the years. That competitive nature may very well be the driving force behind some of his contributions to the world of computer technology. Childhood and Education It is important to understand the background and education of Larry Ellison in order to understand what drives and motivates him in his adult life. Ellison was not a child of privilege. He did not grow up with parents who were scientists or pushed him to excel. According Wikipedia, Larry Ellison was born to a 19 year old unwed Jewish mother who felt compelled to give him up to her aunt and uncle to raise him. He grew up in a two bedroom apartment in a Jewish community in South Shore Chicago. Academy of Achievement website states in the biography about Ellison, he left the University of Illinois during second year final exams when his adoptive mother died. Later that fall he enrolled in the University of Chicago but dropped out after the first semester. Academy of Achievement goes on to say, â€Å"His adoptive father was now convinced that Larry would never make anything of himself, but the seemingly aimless young man had already learned the rudiments of computer programming in Chic ago.† CEO of Software Development Labs According to Academy of Achievement, Ellison moved to California where he worked with a few different companies. One of those companies was Amdahl Corporation where Ellison was able to participate in building the first IBM-compatible mainframe system. Ellison and two other co-workers pursued founding a new company named Software Development Labs. Ellison functioned as CEO of this newly founded company. It was at this company h... ...n Wikipedia, The Free Encyclopedia. Retrieved August 15, 2010, from http://en.wikipedia.org/w/index.php?title=Larry_Ellison&oldid=379100685. "Larry Ellison Biography -- Academy of Achievement." Academy of Achievement Main Menu. N.p., n.d. Web. 15 Aug. 2010. http://www.achievement.org/autodoc/page/ell0bio-1. "What are relational databases?†. (March 23, 2001). HowStuffWorks.com. Retrieved August 15, 2010. http://computer.howstuffworks.com/question599.htm. "Larry Ellison 1944 - Biography - Early life, Software development laboratories, Relational databases, Building oracle, Maturity, The internet revolution, Downturn." Reference For Business - Encyclopedia of Small Business, Business Biographies, Business Plans, and Encyclopedia of American Industries. N.p., n.d. Retrieved August 16, 2010. http://www.referenceforbusiness.com/biography/A-E/Ellison-Larry-1944.html.