Tuesday, December 24, 2019

Essay about Three Approaches to Coping with School Violence

We humans have always sought to increaseour personal energy in the only manner wehave known: by seeking to psychologically steal it from others—an unconscious competition that underlies all human conflict in the world. (James Redfield, 1993, The Celestine Prophecy, New York: Warner Books,65–66) Some school critics and statisticians have observed that drug-dealing, vandalism, robbery, and murder have replaced gum-chewing, â€Å"talking out of turn,† tardiness, and rudeness as the most chronic problems afflicting today’s schools. If the intent of this observation is to shock and rattle the public’s sensibilities, it’s working. Of course, some of us may interpret such suggestions as merely dark, stoic, and cynical—â€Å"scare† tactics quite in†¦show more content†¦A 1993 Harris survey (Youth Record, August 3), reveals that 22% of students polled claimed they took weapons to school in the previous school year (and how many declined to admit it?); a Gallup poll conducted for Phi Delta Kappan (Elam 1993, 137–152) showed the public ranking drug abuse, discipline, and violence in the top four of the ten most serious problems affecting schools. And the depressing numbers drone on. Yet, a MetLife teacher’s survey in 1993 shows that 77% of teachers and 50% of kids felt safe in and around their own schools (9). And according to a New York Times article (1994), although violent incidents in New York City’s 1,100 public schools (K–12) rose 26% in 1993–94, no homicides occurred in them—the first year since 1990. Still, in the same article, New York City Schools’ Chancellor Ramon C. Cortines laments: When I read the list of weapons we have seized, I wonder if we shouldn’t start handing out medals for valor instead of report cards. The violence and weaponry in [New York City’s] streets and communities is (sic) being imported into our school buildings. (27) While the facts about school violence indeed have quite a shock appeal, the attitudes and spirit of a major- ity of teachers and kids are admirable. But we must not allowShow MoreRelatedThe Impact Of Community Violence On Children And Youth900 Words   |  4 PagesTopic 1: Challenges, Coping Strategies, and Support Needs of Teachers in Middle Schools Located in Violent Communities Maring, E. F., Koblinsky, S. A. (2013). Teachers challenges, strategies, and support needs in schools affected by community violence: A qualitative study. 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Monday, December 16, 2019

Information security system Free Essays

What is the OSI security architecture? Ans) A Systematic way of defining the requirements for security and characterizing the approaches to satisfying them is generally defined as â€Å"OSI security architecture†. This was developed as an international standard. Focuses of OSI Security Architecture: 1) Security attacks – action that compromises the security of information owned by an organization. We will write a custom essay sample on Information security system or any similar topic only for you Order Now 2) Security mechanism – designed to detect, prevent, or recover from a security attack. ) Security service – intended to counter security attacks. 1. ) What the difference between passive and active security threats? Ans) Passive Threats makes attempt to learn or make use of information from the system but does not affect any system resources whereas active threats involve modification of the data stream. So in passive attack a hacker intrudes your system, and waits for some valuable information. In an active attack a hacker tries to get the valuable information by using his abilities rather than depending on the stupidity of the victim. Example for passive attack: A key logger which sends the input given by the victim to a hacker via a network (LAN). Example for Active attack: Using Brute force to crack the password of a system. 1. 5) List and briefly define categories of security service Ans) The major categories of security service are namely: Confidentially: The protection of data from unauthorized disclosure by encryption and decryption-preserving authorized restrictions on information access and disclosure, including means for protecting personal privacy and proprietary information. Authentication: The assurance that the communicating entity is the one that it claims to be. The problem of authorization is often thought to be identical to hat of authentication; many widely adopted standard security protocols, obligatory regulations, and even statutes are based on this assumption. Integrity: The assurance that data received are exactly as sent by an authorized entity. End user will receive what is sent-guarding against improper information modification or destruction, including ensuring information nonrepudiation and authenticity Access control: The prevention of unauthorized use of a resource means this service controls that have access to a resource, under what conditions access can occur, and what those accessing the resource are allowed to do. Ability: Time for access-ensuring timely and reliable access to and use of information Availability: The property of a system or a system resource being accessible and usable upon demand by an authorized system entity, according to performance specifications for the system. Nonrepudiation: Provides protection against denial by one of the entities involved in Chapter 2: 2. 2) How many keys are required for 2 people to communicate via a symmetric cipher? Ans ) Only one key is required for 2 people to communicate via a symmetric cipher. The key distribution will send the same key/ single key for encryption and ecryption process. . 9) List and briefly defines three uses of a public key cryptosystem Ans) Encryption/decryption: The sender encrypts a message with the recipient’s public key. Digital signature: The sender â€Å"signs† a message with its private key. Signing is achieved by a cryptographic algorithm applied to the message or to a small block of data that is a func tion of the message. Key exchange: Two sides cooperate to exchange a session key. Several different approaches are possible, involving the private key(s) of one or both parties. 2. 10) What is the difference between private key and a secret key? Ans) Secret key is used in symmetric encryption. Both sender and receiver have obtained copies of a secret key in secure fashion and keep the key secured. The private key is used with public key in asymmetric encryption. The sender will send encryption document with the receiver public key, then the receiver will decrypt the document with his/ her private key. The â€Å"private key† is not shared with anyone. The secret key must be transmitted to or shared with all parties by a method outside the communications link it is intended to secure. 2. 13) How can public key encryption be used to distribute a secret key? Ans) Several different pproaches are possible, involving the private key(s) of one or both parties. One approach is Diffle-Hellman key exchange. Another approach is for the sender to encrypt a secret key with the recipient’s public key. The key distribution uses the asymmetric encryption to send secret key to the receiver by her/ his public key. Then the receiver will use his/ her private key to decrypt to get her/ his secret key. Problem: 2. 9)Construct a figure similar to figure 2. 9 that includes a digital signature to authenticate the message in the digital envelope. Sol) We can Show the creation of digital envelope as a solution. How to cite Information security system, Papers

Sunday, December 8, 2019

Who is responsible for Romeo and Juliets death free essay sample

Romeo and Juliet is a play written by William Shakespeare and these two lovers live changed in just one night. Although their families are feuding with each other, they fall in love and got married together. Sadly, these two cannot get married and they blame fate for all this misfortune. Juliet takes a sleeping potion so that she doesnt have to get married to Count Paris who is the kinsmen of Prince Escalus. Unfortunately, Friar John had a message letting Romeo know that Juliet wasnt dead but the message never got to Romeo. however, Romeo mistakenly thinking that Juliet dead takes a deadly poison to kill himself. Minutes later Juliet wakes up and finds Romeo lying right next to her dead, moments later she takes Romeos dagger and stabs herself. Friar Lawrence is most responsible for the chain of events that leads to Romeo and Juliets death. We will write a custom essay sample on Who is responsible for Romeo and Juliets death? or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Friar Lawrence knew about these two families problems and he still marries Juliet. Friar Lawrence thinks Romeo is still in love with Rosaline, Romeos first love. However, Romeo convinces friar Lawrence that Juliet is his true love. Friar Lawrence agrees to marry these two lovers. ‘’For his alliance may so happy prove to turn your households rancor’’(Act 2 pg 99) Friar Lawrence believes that by marrying these two their family feuds would end. This makes him responsible because he knows that marrying this two isnt going to end anything.Friar Lawrence is responsible for this tragedy because he came up with the death and potion plane for Juliet. His plan was for Juliet has to consent to marry Paris; then, on the night before the wedding, she must drink a sleeping potion that will make her appear to be dead; she will be played in the Capulet tomb, and Friar John will send the word to Romeo whos in Mantua to help retrieve her when she wakes up. This plan did not go the way that is was supposed to. As you know from the introduction the message never got to Romeo. If friar didnt wait until Romeo got banished from Verona Romeo would have known the plan. Also, Friar Lawrence could have let Juliet run away from Mantua to be with Romeo but instead he wanted Juliet to take potions.Those who disagree say that it was Juliets choice for not running away herself and others believe that is was mostly friar john fault for not delivering the message and Romeo wouldnt have killed himself. However Friar Lawrence