Case Projects in Computer Forensics Essay Example | Topics and Well Written Essays - 750 words

Case Projects in Computer Forensics - Essay Example Despite the fact that the Daubert Standard is not directly connected to forensics examination, it sets a good guideline for acceptability of validation reports in courts of law (cited Brunty 1). In order to determine the validity of the findings in question, it is vital to determine from the police investigator the exact procedure he/she took as well as all the forensic tools he/she used in examining the computer data. In the Digital Evidence discipline, it is fundamental that the examination of procedures include a complete understanding of the methodology used so as to determine its specificity, limitations and margins of error. The validation of forensic tools is conducted to verify that they did not alter, add or delete any of the original data. (Barbara 4). Computer forensics involves, at least, the basic four processes of identification, preservation, analysis and presentation. Since identification and presentation depend on the skills of the investigator they cannot be subject ed to the validation process of the computer laboratory. On the other hand, preservation and analysis are forensics-tool bases and thus, can be verified and validated. Preservation entails forensic copy, verification, write protection and media sanitation while analysis involves the processes of searching, file rendering, data recovery, decryption, file identification, processing, temporal data, and process automation (Guo et al 2009, pp. S-15-S16). Validation and verification of electronic evidence requires mathematical technique primarily to determine their error ratio. One way of doing this is to split a sample data into subsets, to be called model subsets, and compare them to the remaining subsets. Next, the file system should be examined remembering that file systems have two layers: abstract and; low level. When examination had focused on the abstract level, it is most likely that the low level evidence has been overlooked. To determine if this is the case, the file system ima ge should be examined and layer 1 obtained. From layer 1, layer 2 should be inferred and this inferred layer should be compared to the actual layer 2 and the discrepancies noted. All other file systems are then examined similarly and the average error ratio obtained. To continue with the validation, a mathematical formula must be adopted for each file system that consists of a weighted summation of every layer. The following is an example of a formula of FAT12: Er = 0.05(L1) + 0.1(L2) + 0.05(L3) + 0.1(L4) + 0.2(L5) + 0.2(L6) + 0.3(L7) A FAT12 file system, a file system commonly used in most computers, has seven layers: boot sector values; FAT and data areas; FAT entries; clusters; formatted cluster content; linked list of clusters; all directory entries. Each of these layers must be examined for their respective abstract and lower-level, a forecast lower level layer developed with the help of the abstract and the predicted lower-level compared with the original lower-level layer and error ratio is stored. At the end, all stored layer ratios must be placed into a weighted formula similar as above and an average error ratio for the file system obtained. This examination would establish the extent of the discrepancies in the previous examination (Sremack 2003). Case Project 14-3 Several characteristics distinguish a technical/formal paper from other types.

Nuclear Energy is Safe and Clean Essay -- Power Plant Energy Safety

Abstract Nuclear energy is a promising source of electricity for the future. Although there are many people against it, it is only because many do not know of the progresses nuclear energy has made since it was started. Nuclear energy has become one of the cleanest sources of energy with minimum radiation. These are such small quantities that we receive only about .5 millirems of it yearly while nature sums it up to 360 millirems for the average person. Many of us shy away from nuclear energy due to fear caused by ignorance but with some patience and research one can realize the potential that nuclear power has and how it can shape a new era in the future. It is an energy source with massive amounts of energy as a byproduct of its fission and over the years we have acquired the technology not only to harness it but to make it a renewable resource as well to fast breeders. Nuclear power may seem like a heavy investment but it is a change much needed for the growing economy and dependence on el ectricity. Introduction Nuclear energy has proven itself to be a clean source of energy; yet, fear of radiation has kept its use from becoming more expansive. Nuclear energy is one of the newer types of energy sources used yet ignorance over the true dangers of nuclear energy causes the public to push away a potential energy source. Fear of radiation is illogical because everyone is exposed to background radiation every day. We receive radiation from cosmic rays, outer space, radon gas, and from naturally radioactive elements in the earth. Each year in the United States, the average dose to people from natural and man-made radiation sources is about 360 millirem.(mrem)(Office of Civilian Radioactive Waste Management) Millirems are units o... ...er types of breeder reactors are the LMFBR’s or the liquid metal fast breeder reactors. These reactors are either lead cooled or sodium cooled. These types of reactors place more emphasis in the fact that nuclear power has become safer and more efficient to where no matter the disadvantages the advantages greatly outnumber the costs of using nuclear energy. References Brain, Marshall. (2015) "How Nuclear Power Works" Web. 29 May 2015. http://science.howstuffworks.com/nuclear-power.htm McCarthy, J. (2013) Web. 29 May 2015. http://www-formal.stanford.edu/jmc/progress/nuclear-faq.html Thomas, Steve. "The Economics of Nuclear Power." (2005) Web. 29 May 2015. http://www.nirs.org/c20/atommythen_thomas.pdf Timeline - Greatest Engineering Achievements of the Twentieth Century. (2015) Web. 29 May 2015. http://www.greatachievements.org/?id=2984

Business Rules Essay

Among other things, define what they are, main sources for them, why they are important, and what you would do with them. Include a brief explanation of what your company does and some of its important Business Rules. Business Rules, as defined by our textbook are a description of policies, procedures or principles of an organization written in a simple and concise format. These rules are used to create the necessary structure for which the organization will operate within. They cover every aspect of the Business and define even the most menial tasks. Customer interaction, how employees are hired, how products are developed and how products are shipped are some examples of Business Rules. The Business rules once they are defined are then able to be converted into database entities, attributes, relationships and constraints. These items are then used in the database design for the company. From these entities and attributes relationships are created that correspond to the defined Business rules. Any rules that specifically name a person, place or thing will become attributes or entities in the database. Constraints are placed on the data to maintain the integrity and they are also derived from the Business rules. Examples of these are the days and times that the Business is open and how much an employee is allowed to make in a certain job function. My company, Maquet, is an international medical supply company started in 1853. They began by making operating tables and operating room lamps. Today they make a wide gamut of products from complete operating rooms systems, to balloon pumps and other life-saving equipment. One of our quips is that if you see our equipment, you are really in trouble or you’re a doctor or a nurse. Since we design and manufacture medical supplies, we are regulated by the FDA and are under constant scrutiny and monitoring. Because of this constant monitoring we have to register and address any complaint about our equipment. We have to work on validated systems, our training on clean room access and other safety features are tracked and we keep emails going back to seven years. Some important Business Rules I believe we have are actually many of our constraints. For instance we have clean room training that needs to be completed on a yearly basis. We must complete this training by a certain date to maintain compliance and to be able to enter a clean room and service the computer. We have rules that define how long we can take to respond to a ticket or how long we can keep a ticket open based on a certain status of low, medium or high. These Rules are in place to make sure we don’t contaminate anything when we enter a clean room or we acknowledge and resolve issues in a timely manner. Business rules define the constructs with within an organization operates. They help show the guidelines that employees and managers need to function within to keep the Business successful. Business rules are beneficial to everyone as long as they are properly defined and in the best interest of everyone.

The Purpose of the Narrative Arc in Literature

Sometimes simply called arc or story arc, narrative arc refers to the chronological construction of plot in a novel or story. Typically, a narrative arc looks something like a pyramid, made up of the following components: exposition, rising action, climax, falling action, and resolution. A Five-Point Narrative Arc These are the five elements used in a narrative arc: Exposition: This is the beginning of the story in which characters are introduced and the setting is revealed. This sets the stage for the story to play out. It usually includes who, where, and when. You may also be introduced to the main conflict that will propel the story, such as issues between different characters.Rising Action: In this element, a series of events that complicate matters for the protagonist creates a rise in the storys suspense or tension. The rising action may further develop the conflict between the characters or the characters and the environment. It may contain a series of surprises or complications to which the protagonist must react.Climax: This is the point of greatest tension in the story and the turning point in the narrative arc from rising action to falling action. The characters are deeply involved in the conflict. Often, the protagonist has to make a critical choice, which will guide his or her actions in the climax.Falling Action: After the climax, events unfold in a storys plot and there is a release of tension leading toward the resolution. It can show how the characters have been changed due to the conflict and their actions or inactions.Resolution: This is the end of the story, typically, in which the problems of the story and of the protagonists are resolved. The ending doesnt have to be a happy one, but in a complete story, it will be one that feels satisfying. Story Arcs Within a larger story, there can be smaller arcs. These can flesh out the stories of characters other than the main protagonist and they may follow an opposite course. For example, if the protagonist story is rags to riches, his evil twin may undergo a riches to rags arc. To be satisfying, these arcs should have their own rising action, climax, falling action, and resolution. They should serve the overall theme and subject of the story rather than being superfluous or appearing to simply pad the story. Smaller arcs may also be used for maintaining interest and tension by introducing new stakes in the conflict of the main protagonist. These plot complications increase tension and uncertainty. They can keep the middle of a story from becoming a predictable slog towards a typical resolution. Within episodic literature and television, there may be a continuing story arc that plays out over a series or season as well as self-contained episodic story arcs for each episode. Example of a Narrative Arc Lets use ​Little Red Riding Hood as an example of a story arc. In the exposition, we learn that she lives in a village near the forest and will be visiting her grandmother with a basket of goodies. She promises not to dawdle or talk to strangers on the way. In the rising action, she nevertheless does dawdle and when the wolf asks where she is going, she tells him her destination. He takes a shortcut, swallows the grandmother, disguises himself, and awaits Red. In the climax, Red discovers the wolf for what he is and calls out for rescue from the woodsman. In the falling action, the grandmother is recovered and the wolf is defeated. In the resolution, Red realizes what she did wrong and vows that she has learned her lesson.