Network Security - 1567 Words

ABSTRACT : This paper describes the basic threats to the network security and the basic issues of interest for designing a secure network. it describes the important aspects of network security. A secure network is one which is free of unauthorized entries and hackers INTRODUCTION Over the past few years, Internet-enabled business, or e-business, has drastically improved efficiency and revenue growth. E-business applications such as e-commerce, supply-chain management, and remote access allow companies to streamline processes, lower operating costs, and increase customer satisfaction. Such applications require mission-critical networks that accommodate voice, video, and data traffic, and these networks must be scalable to†¦show more content†¦Each module can be treated separately and assigned a different security model. The goal is to have layers of security so that a successful intruders access is constrained to a limited part of the network. Just as the bulkhead design in a ship can contain a leak so that the entire ship does not sink, the layered security design limits the damage a security breach has on the health of the entire network. In addition, the architecture should define common security services to be implemented across the network. Typic al services include: • Password authentication, authorization, and accounting (AAA) • Confidentiality provided by virtual private networks (VPNs) • Access (trust model) • Security monitoring by intrusion detection systems (IDSs) After the key decisions have been made, the security architecture should be deployed in a phased format, addressing the most critical areas first. Security Technologies To ensure the most comprehensive level of protection possible, every network should include security components that address the following five aspects of network security. Identity Identity is the accurate and positive identification of network users, hosts, applications, services and resources. Identity mechanisms are important because they ensure that authorized users gain access to the enterprise computing resources they need, while unauthorized users are denied access. Perimeter Security Perimeter securityShow MoreRelatedThe Security Of A Home Network1352 Words   |  6 Pages Yu Lun Chou 1730799 MADS 6638 Computer Security Admin. George Thucydides 4/26/2016 Table of content Introduction Inventory Vulnerability Test Protection Support Incident Response  Introduction Information play an essential role in everywhere. For a company, in order to run the company well, information management is a necessary skill, and leaking information, odds are , causes significant damage to the company. 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Therefore, companies are trying as hard as they can, and give high effort in protecting their network from attack and make sure that they have the best network security. Most people think that the threat of security attack is only come from outside the company. In fact, the attack from inside the company network is more harmful with high frequency to be happened. As written by Cryptek (2001)Read MoreNetwork Security And The Network1818 Words   |  8 Pages Abstract Network security is a broad term used to refer to processes and procedures that are configured by a company’s network administrator to provide visibility and prevent denial of service, unauthorized access, modification and exploitation of the corporate network or respective resources. The resources refer to files or computer programs available on the corporate network infrastructure. 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Cecilia Beaux Bio - American Portrait Painter

Movement, Style, School or Type of Art: Realism, specifically portraiture. The artist was frequently (and favorably) compared to John Singer Sargent, which she took as a compliment. Beaux executed some technically flawless, personally uninspiring drawings of fossils and shells for the paleontologist E. D. Cope in 1874. Though it was a paying job, she so disliked portraying anything except people (and the occasional cat), she never again ventured outside of portraiture. Her start here involved painting the faces of children on yet-to-be-fired porcelain plates -- a briefly lucrative proposition that allowed her to bank funds with which to pursue her true ambition: oil portraiture in the grand manner (i.e.: full-length poses of nicely-clothed, usually-wealthy sitters). Date and Place of Birth: May 1, 1855, Philadelphia Records indicate that Beauxs christened name was Eliza Cecilia, after her mother, Cecilia Kent Leavitt (1822-1855). She was thus connected with old Main Line Philadelphia Society, although the Leavitt family had become decidedly middle class by the time of the artists birth. Unfortunately, Beauxs mother died of puerperal fever a scant 12 days after giving birth. Her grieving father, silk merchant Jean Adolphe Beaux (1810-1884) returned to France, leaving Cecilia and her older sister, Aimà ©e Ernesta (Etta), to be raised by the Leavitts. Cecilia was known as Leilie to family, for her father could not bear to call the infant by her dead mothers name. Early Life: It may sound incongruous to say that the two little sisters, de facto orphans, were fortunate to be raised by relatives. However, their grandmother, Cecilia Leavitt, and their maiden aunts Eliza and Emily, were remarkably progressive women. Etta and Leilie were educated in a home that valued female scholastic and artistic pursuits, and saw their Aunt Eliza contribute monetarily to the household by working as a music teacher. It was evident from an early age that Leilie had a talent for drawing. The Leavitt women -- and Aunt Eliza, in particular -- encouraged and supported her efforts. The girl was given her first drawing lessons, a set of lithographs for beginning art students, and visits to see art by Eliza (who had visual art talents, as well as being a musician). When Aunt Emily married William Foster Biddle in 1860, the couple settled into the Leavitt home a few years later. Beaux would later credit Uncle Willie as the biggest influence in her life, second only to her grandmother. Kind and generous, Biddle helped raise the Beaux girls as if they were his own children. For the first time since Leilie was born, the household had a strong male role model -- and a bit more discretionary income. He, too, encouraged his neice in developing her artistic talents. Although the Leavitts had little money, they were one of Philadelphia societys oldest families. Uncle Willie paid the fees for both girls to attend the Misses Lymans School -- a must for young women in society circles. Enrolled at age 14, Leilie spent two years there as a decidely average student. She established many good connections, but was unhappy that she couldnt afford the extra fees for art instruction. When Beaux graduated the family decided that she must have proper artistic instruction, so Biddle arranged for her to study with Catharine Ann Drinker, a distant relative and accomplished female artist. Best Known For: Cecilia Beaux was the first female instructor at the Pennsylvania Academy of Fine Arts. Important Works: Les Derniers jours denfance (The Last Days of Infancy), 1883-85 Date and Place of Death: September 17, 1942, Gloucester, Massachusetts. Disabled since breaking her hip in 1924, 87-year-old Beaux died at her home, Green Alley. Her grave is located at West Laurel Hill Cemetary, Bala Cynwyd, Pennsylvania, close to Etta (1852-1939) in the Drinker family plot. How To Pronounce Cecilia Beaux: sess ·seal ·ya boh Quotes From Cecilia Beaux: Line is line, space is space--wherever found. The consideration of them is necessary to every work of art, and no such work can exist without them. --from the lecture Portriature, 1907.Never was a word more absued than Technique. To many Technique means the purely mechanical, material side of a work, something generally found to be hard, shiny, even vulgar. Just now, to be clumsy is to be admired. Indeed bungling is much in fashion now, in painting. And if one does not bungle naturally, one may easily learn how to do it from the initiated.But the true definition of Technique is very simple. A perfect technique in anything only means that there has been no break in continuity between conception, or thought, and the act of performance. --from Address to the Comtemporary Club of Philadelphia Shortly after Sargents Death, 1926In my opinion the charm and magic of color is inseperable from substance; that is, from texture. --from the lecture Color, 1928. Sources and Further Reading Cecilia Beaux Papers, 1863-1968. Archives of American Art, Smithsonian Institution. Beaux, Cecilia. Background with Figures: Autobiography of Cecilia Beaux.Boston: Houghton Mifflin, 1930. Bowen, Catherine Drinker. Family Portrait.Boston: Little, Brown and Company, 1970. Carter, Alice A. Cecilia Beaux: A Modern Painter in the Gilded Age.New York: Rizzoli, 2005. Drinker, Henry S. The Paintings and Drawings of Cecilia Beaux.Philadelphia: Pennsylvania Academy of the Fine Arts, 1955. Tappert, Tara L. Cecilia Beaux and the Art of Portraiture.Washington, D.C.: National Portrait Gallery and the Smithsonian Institution Press, 1995.-----. Beaux, Cecilia.Grove Art Online. Oxford University Press, (27 January 2012). Read a review of Grove Art Online. Yount, Sylvia, et al. Cecilia Beaux: American Figure Painter (exh. cat.).Berkeley: University of California Press, 2007. Go to Artist Profiles: Names beginning with B or Artist Profiles: Main Index

An Internship Report On Production Of Graphite Electrodes...

AN INTERNSHIP REPORT ON PRODUCTION OF GRAPHITE ELECTRODES POWER GENERATION DURATION: 45 DAYS From May 15, 2015 to June 30, 2015 SUBMITTED TO: SUBMITTED BY: MRS. P.SUMATI GAJENDRA MALVIYA HR, HEG LTD. MANDIDEEP 4th YEAR DEPARTMENT OF ELECTRICAL ENGINEERING, INDIAN INSTITUTE OF TECHNOLOGY ROORKEE, UTTARAKHAND ACKNOWLEDGEMENT First and foremost, I would like to express gratitude to NLDC, Power System Operation Corporation Ltd (POSOCO) for providing me a magnificent opportunity in the form of this dissertation to learn. The report bears the imprints of many people. There are many kinds of helping hands, to which I owe my sense of gratitude. So, I express my appreciation to all those, whose thoughts and insights helped me in understanding and completing my training. First of all I would like to thank my training guide Mr. Pradeep Reddy, who helped me throughout my project. I express my sincere gratitude to Miss Bindiya Jain- HR for her stimulating guidance,

Han vs Mauryan free essay sample

The Chinese Han Dynasty vs. The Indian Mauryan/Gupta Empire The Han Dynasty of China and the Mauryan/Gupta Empire of India in 206 B. C. E to 550 C. E had many social and cultural differences which made them unique societies, but their political structure and form of government seemed to borrow ideas from each other. The social aspects of both empires had a lot in common because gender-roles, family and relationships were looked at in the same way. During the Mauryan/Gupta as well as the Han Dynasty, women were subservient to men and families relied on patriarchs. In both empires there were close knit villages, landowners had power and merchants took second role in the social system. However, the two had their differences. The Mauryan/Gupta Empire put emphasis on caste while the Han Dynasty was based on a social structure. The Mauryan/Gupta Empire’s caste system was an important social bond and a crucial part of the political structure. We will write a custom essay sample on Han vs Mauryan or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page At the top of the system were the priests, then the warriors and rulers, followed by the merchants, skilled traders and minor officials, after that were the unskilled workers and finally the â€Å"untouchables†, who were outcastes and barely considered as people. The strict caste system provided a network of rules by which people could regulate their lives and activities and also promoted public order which helped politically. The caste system was so strictly enforced that no one could intermarry or be moved up a class so it determined where you would be for all your life. The caste system also played a role in religion which encouraged the use of a caste system rather than people look down upon it. On the other hand, the Han Dynasty relied on a highly structured system of classes. The most powerful was the emperor, the nobles and the military officers, who made up the first class. Next came the farmers and peasants who made up the second tier. Lastly, the third class was made up of merchants, commoners and servants. This system differed greatly from the Mauryan/Gupta Empire because it was far less definite; the assigned social class for each person dictated their social status but not their wealth or power. This Chinese structure also stressed on level of education rather than where you were socially unlike the Indian system. Even though many of their values were mostly the same, the development and transformation of social structures made them completely different. The Han Dynasty and Mauryan/Gupta Empire were developing similarly in science and technology during this time period. Advances in astronomy and medicine in both civilizations included the calculation of the motion of planets, bone setting, plastic surgery and personal hygiene. Studies in mathematics also came about in the Han and Mauryan/Gupta Empire. In spite of the fact that they were sharing technological advances, the belief systems, philosophies and religions differed greatly between the two. The Mauryan/Gupta Empire had lively art, which included many epic poems, and primary religions that suggested unpractical, otherworldly beliefs. The practice of Buddhism and Hinduism flourished during this time because the great ruler, Ashoka, spread Buddhist values and accepted and honored Hindu principles. These religions had practices that could be considered out of this world because of the belief that there are divine forces and beings. On the contrary, the Han Dynasty had restrained art, and separate, more practical belief systems. These belief systems did not have a belief in any supernatural or godly forces but served as lifestyle guides. Confucianism, a philosophical system from the teachings of Confucius, spread because it focused on righteousness and morals rather than gods. Belief systems in the Han Dynasty were formed based on the needs and views of the people. Whereas, the belief systems formed in the Mauryan/Gupta Empire were made to unite humans with the divine. The political structure and forms of government of the Han Dynasty and Mauryan/Gupta Empire shared many of the same ideas. Both had bureaucracies with groups of specialized officials and a centralized government. They were also the same because they had a form of autocratic rule so there was government by a single person that had authority over all others. The two were also the same when it came to expansion; they both expanded their borders during this period. Though there was one big difference, the Mauryan/Gupta had large, strong armies and utilized them while the Han Dynasty had a small army and didn’t feel it was necessary to even have armed forces. Although their ruling styles were very similar, the militaristic values set them apart. The Chinese Han Dynasty and Indian Mauryan/Gupta Empire borrowed government direction and approach from each other but did not influence each other socially or change their cultural identities. During the time period of 206 B. C. E to 550 C. E, the Persian Empire was also taking form. Similarly, this empire had bureaucracy, supported and formed religions and expanded territory. Today, China and India both have heavy influence on the world due to their cultural and technological exchanges connecting them to all parts of the world.

Circuit Board Case Study free essay sample

They produce circuit boards to large organizations like Apple and Hewlett-Packard. The large computer companies hire Circuit Board Fabricators, Inc. (CBF) to make to circuit boards for the large companies new prototypes. CBF implements a large automated process that follows standard codes to produce these circuit boards efficiently and with above average customer service; however, recently CBF has been experiencing losses. CBF believes that the losss the company is facing is due to the current automated system used. The CBF process engineers designed the plant has the capacity to produce 1,000 circuit boards per day; however, the plant has been producing 700. Nearly 20% of the circuit boards produced daily are defected, and CBF is not producing enough high quality boards per day to meet the consumer’s demands. The following analysis will address the process flow structure, the capacity of the process, losses of the process, short and long-term recommendations for improvement opportunities. We will write a custom essay sample on Circuit Board Case Study or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Flow Structure CBF currently uses a common manufacturing process called the batch shop flow process. This process is used when a company as a stable line products. This type of flow process is commonly used within the electronics industry as the products are similar with on a few differences in production. The fabricators insist that the plant has the capability to produce 1,000 useable circuit boards per day using this process. Through analyzing the process it is concluded that it takes forty-five minutes just in loading and unloading the circuit boards. In addition, the final inspection process consisting of 6 workers is time consuming as well. Through analyzing the amount of manual labor used during the production process, the amount if effect boards may not be able to be decreased due to human error. The capacity of the process has to be expanded in order to reach the number of boards that process engineers insist that the plant can run. Impact of Losses It is stated that nearly 15% of the circuits boards are rejected during an early process inspection and another 5% are rejected during the final testing process. CBF has created a 25% cushion to account for losses in these two inspection phases. This means that once a board is sent out to a client, they project the clients has only a 5% chance of receiving a defective board. The number of boards lost during both of the inspections process means that the company has little room for error once a board is set out since they are already producing lower boards then expected per day. Baseline Data The data in this case shows that CBF increases all orders by 25% to ensure that after the final inspection, and circuit boards are rejected an order is filled. The plant is supposed to produce 1,000 fully operating circuit broads a day; however, CBS is only producing 700 before final inspections and rejections are accounted. Typically, 15% of all boards are rejected during the first inspection while 5% are rejected at the final inspection process. CBF needs to increase the amount of boards manufactured and decrease the number of boards being rejected. Establish Performance Requirements In order for CBF to produce high quality circuit boards, the following requirements to establish performance are recommended: -Extended hours of operation -Additional Machinery -Decrease initial inspection time If the company were to extend production hours to 12 hours a day with an addition of a machine, the production and production cost would increase but so would the number of produced circuit boards. In addition, if the factory could shorten the initial inspection process time, this would allow for more boards to be produced and lessen the bottle neck affect the company currently faces. Process Improvement Opportunities After a full examination of the case study, the top three process improvement opportunities include: As examined, the top three process improvement opportunities include: 1. Increase the factory’s hours of operations to 12 hour days 2. Increase machinery to reduce human error 3. Create a new initial inspection process to decrease time Final Recommendation My current workplace is not in the manufacturing industry. The only improvement that my company does currently implements is increased hours of operation. This increases the cost of operations; however, creates potential through availability to earn capital. Our company cannot add machinery, but does use other non-human resources to aid in the decreased risk of human error through programs and software. As the consultant for CBF, my final recommendation would be to implement a new process for reviewing the products, additional machinery, and additional hours of operation. The estimate of the factory’s production was more than likely an estimate, now that the factory has been producing a consistent number of circuit boards they can review and make recommendations based on their true to form production line. Through analyzing the data, it is determined that in part human error and a lack of machinery are responsible for the missing 300 boards being produced. These changes should give CBF the increase the company needs to fulfill their consumer’s demands.

Doppler Effect Essays - Wave Mechanics, Astronomical Spectroscopy

Doppler Effect Christian Johann Doppler, born November 29, 1803 in Salzburg, Austria died March 17, 1853 in Venice. Christian Doppler an Austrian Physicist who first described how the detected frequency of light and sound waves is affected by the relative motion of the source and the detector. This aspect became known as the Doppler Effect. Christian was educated at the Polytechnical Institute in Vienna. Doppler became director of the physical Institute and professor of experimental physics of the University of Vienna in 1850. In 1842 he published Uber das farbige Licht der Dopperlsterne which means Concerning the Coloured Light of Double Stars, which contained his first statement of the Doppler effect. He then theorized that since the pitch of sound from a moving source varies for a stationary observer, the colour of the light from a star should alter, according to the star's velocity relative to Earth. The cause of the Doppler effect isn't just sound. There is also light. As the source of the wave approaches or moves away to a person. For example you can tell if a light is far away, or close to you without really judging where the light is at. All you have to do is if a light is far away from you then the light is small, and continues to get smaller as it moves away. And if the light is moving towards you then the light becomes bigger, and brighter. Another example of this is if you ever drove in a car at night you can see a car from far away but the headlights of the other car look like they are more seperated apart. And as the vehicle moves closer to you, the lights seem that they are getting closer together. What happens to a pitch or frequency when the source is moving towards the person or away from him/her? It has been established from sound waves that the frequency is higher when a sound source is moving toward the person and lower when it is moving away from him/her. Another example of the Doppler effect is the way a police cars siren changes in pitch when it passes by. The sound waves in front of the car are condensed, while the trailing sound waves are longer and of a lower pitch. Light from an object moving towards the Earth is shifted toward the blue end of the spectrum, where as light from objects moving away is shifted toward the red end. The human ear cannot hear all possible frequencies. Very few people can hear any fewer than 16 Hz or any more than about 20 kHz (kilohertz--1 kHz equals 1,000 Hz). Music rarely makes use of this whole range of audible frequencies. The lowest note on a piano has a frequency of 27 Hz and the highest note a little more than 4 kHz. Frequency- modulation (FM) radio stations broadcast notes up to 15 kHz. These can be heard through hi-fi receivers. The intensity of a sound has nothing to do with its pitch. A high tone can be either loud or soft, and so can a low tone. Intensity depends upon the strength, or amplitude, of the vibrations producing the sound. A piano string, for example, vibrates gently if the key is struck softly. The string swings back and forth in a narrow arc, and the tone it sends out is soft. If the key is struck forcefully, however, the string swings back and forth in a wider arc. The stronger vibration then produces a louder tone. Redshift is a Doppler effect which states that if a galaxy is moving away, the spectral line of that galaxy observed will have a shift to the red end. The faster the galaxy moves, the more shift it has. If the galaxy is moving closer, the spectral line will show a blue shift. If the galaxy is not moving, there is no shift at all. However, as astronomers observed, the more distance a galaxy is located from Earth, the more redshift it shows on the spectrum. This means the further a galaxy is, the faster it moves. Science Essays

Red Cross Involvement in WWII essays

Red Cross Involvement in WWII essays Red Cross Involvement The Red Cross is a group organization, which consists mostly of volunteers that help the needy and the hurt. In the beginning of World War II, when it was just announced that we were at war with the Japanese the doors of the Red Cross opened to thousands of new volunteers that wanted to help the American soldiers. To ease the discomfort of civilians being drafted, the Red Cr0oss decide to turn towards social workers and recreational specialists. (Comptons Interactive Encyl.) The Red Cross helped keep Americans calm during this war but soon, the Cold War Era began and made it difficult to work with. The American Red Cross successfully met the challenges of war and peace as it established a blood program. (Comptons Interactive Encyl.) This blood program was requested by the U.S. Army and Navy. During the four-year period, starting at 1941 in New York City, 6.6 million donors gave blood to help their soldiers. As the blood donors increased during the war, new centers opened and Army and Navy asked the Red Cross for greater amounts of blood. (Comptons Interactive Encyl.) The Red Cross also helped refugees reunite with their familys already living in the U.S. by setting up posts where you could look for names of the loved ones you are missing and see if they have made it back to the U.S. Many youths were in need of clothes and food so the Red Cross supplied what they could from the donations they received to the young people in need. The Nurses Aide Corps was an only volunteer organization to help meet the emergency needs of the civilian population. It played a significant role in building up community health defense during a time when there was a shortage of nurses and medical personnel. (Comptons Interactive Encyl.) Before the attack on Pearl Harbor the Red Cross practiced emergency calls so the ...