Greek Maths
Mas3039 Mathematics: History and Culture Topic 2: The Greek Legacy Essay (2): Discuss Archimedes' double reductio ad absurdum proof for the quadrature of the parabola. Compare and contrast this to a modern calculus proof of the same result. Archimedes of Syracuse (287 - 212 BC) is known as the greatest mathematician of his time and is considered to be one of the greatest of all time. He dominated Greek maths in the third century BC despite not being a native of the city of Alexandria, the centre of mathematical activity.1 The son of an astronomer, Archimedes is credited with many great discoveries in mathematics, mechanics and engineering. During the second Punic war Syracuse was besieged by Romans and we are told that Archimedes invented war machines such as catapults, ropes and pulleys, and devices to set fire to the ships to keep the enemy at bay.1 Archimedes did not think much of these inventions but it meant that mathematics and science were brought "more within the appreciation of the people in general".2 Archimedes' work was both productive and thoroughly detailed and he was never reluctant to share his methods of discovery. What was different about Archimedes compared to other mathematicians of his time was the fact that his work illustrated his method of discovery of a theorem prior to presenting a rigorous proof. This was to stop people claiming his work to be
Rich Internet Applications
Multimedia Internet Development Year: 3 Rich Internet Applications To: James Williams From: Julian Moruzzi Table of Contents Page Section Description . Front Cover 2. Table of Contents 3. Table of Figures 4. .0 Introduction 5-8. 2.0 Concepts - RIA 9. 2.2 Current Stance in the technology 0. 2.3 Distributed RIA 1. 3.0 Design/ Implementation 3.1 Requirements 2. 4.0 Design 4.1 Colour Scheme 3. 4.2 Page Layout 4. 4.3 Template 4.4 Buttons 5,16 5.0 Implementation 5.1 Site Structure 7-19. 5.2 SWF Files 22. 6.0 Evaluation 23. 7.0 Test 24. 8.0 Bibliography 25-27. 9.0 Appendices Table of Figures Figure Page Description . 6. Adobe platform for RIAs 2. 8. where RIA lies 3. 1 Requirements Catalogue 4. 3. Design 5. 4. Website template 6. 6. Hierarchical chart of web pages 7. 7. Screen shots of SWF files 8. 20. xml for page buttons 9. 21. XML Class function- action script code .0 Introduction Originally the target of this report was to create a Rich Internet Application for an organisation which could be fictitious in nature. The application could be developed using one of the following ways: * Using Flash 8 & Action Script 2.0 programming to connect with some basic server side script, e.g. PHP. * Using Flash CS3 with Action script 3.0 to create a multimedia based application * Using Flex with
Windows Communication foundatio
Windows Communication Foundation Assignment: 2 Year: 3 Date In: 20th May 2008 To: Stephen Hole From: Julian Moruzzi Table of Contents Page Section Description . Cover 2. Table Of Contents 3. Table Of Figures 4. Introduction 5. . 'Maths' Application Development 6. .1 Creating the WCF 8. .2 'Maths' Host 0. .3 'Maths' Client 2. .4 Database 3. .5 Testing 7. .6 'Search' application 21. .7 Summary 22. 2. Hosting a WCF using Internet Information Services 27. Bibliography Table of Figures Figure Page Description . 7. Service.vb code from the MathsHost project 2. 8. Maths Host - Main Form 3. 9. Form design: Host 4. 0. 'Maths' form design 5. 1. Client Form Code 6. 2. Database Structure 7. 3. Database Row View 8. 3. Test 1 Filling Form - Pythagoras 9. 4. Test 1 Filling Form - Pythagoras 0. 5. Test 1 - Information entered into the database 1. 5. Test 2 - Stopping the Host 2. 6. Test 2 - Error occurred 3. 7. Search Host 4. 8. Error When Search Host is not running 5. 9. SearchService.vb code in the WCF Host 6. 20. svcutil command 7. 21. Grid view of retrieved database information 8. 24. Code for enabling meta data. Introduction This small report has been produced to support an application that has been developed in the area of Distributed Web Applications. It is contained on a CD
Security in Wireless Local Area Networks
Security in Wireless Local Area Networks Sami Uskela Department of Electrical and Communications Engineering Helsinki University of Technology [email protected] Abstract When the wireless communications is coming to the offices and the homes, there are some new security issues to be taken care of. Today we have continuously growing markets for the wireless LANs, but there is big black hole in the security of this kind of networks. This paper gives an overview of the security functions specified in two wireless LAN standard, namely in the IEEE 802.11 and the HIPERLAN. There is also some discussion about the threats and vulnerabilities in wireless networks compared to wired networks. And last but not least the protocols and mechanisms needed in the secure wireless LAN are described. Table of Contents Introduction 2 Abbreviations and Definitions 3 Standards 3.1 HIPERLAN 3.2 IEEE 802.11 4 Threats and Vulnerabilities Compared to Wired LANs 4.1 Eavesdropping 4.2 Transitive Trust 4.3 Infrastructure 4.4 Denial of Service 5 Secure Solution 5.1 Design Goals 5.2 Design Overview 5.3 Authorization 5.4 Integrity and Confidentiality 5.5 Key Change Protocol 5.6 Key Management 5.7 Solution Analysis 6 Conclusions 7 References Introduction Around 1980 was the concept of the wireless LAN introduced and since 1985 have many companies tried to implement
Secondary Sources for Geographical Information.
Assignment 2: Secondary Sources for Geographical Information To answer the title question that our group decided "Flood risks on the Rheidol floodplain", I choose two secondary data sources to help answer the question. The first data source was local published history sources which I found located in the National library of Wales and the Hugh Owen library. The second data source was local newspapers; I used the internet to search for local newspaper websites which allowed me to search there server for relevant articles. Before you are able to use the National library of Wales you need to register so that you are able to use this resource, once you have registered you are then able to request literature for reading. To search for relevant books and journals you have to use the national library of Wale's catalogue, this allows user to search the main database for reading material which will be useful. Once you have found a book or journal that you would like to read, you have to request title; this tells the library staff that you would like to look at the literature and you are required to specify a date and time when you would like to read book's or journals. The books which are in the national library must all be viewed inside the building; no books are allowed to be loaned. The National library of Wales also contains all the journals which have been published in the United
Discuss the basic ( computer ) architecture and operation of the micro-simulator that you have been using in the practical work.
Unit 19 HND BIT Computer Architecture Assignment 2 Prepared for Roy Clarke Prepared by R J Clayton .0 Table of Contents -------------------------- .0 Table of Contents 1 2.0 2 3.0 3 Question A 3 Question 3.0 A continued 4 Question 3.0 A continued 5 Question B 6 2.0 ; CONTROL THE TRAFFIC LIGHTS JMP Start DB 90 ; address of the interrupt routine Start: ; RED / RED STI ; Switches on interrupts MOV AL,90 ; Copy 10010000 into the AL register. OUT 01 ; Send AL to Port One (The traffic lights). MOV BL,01 ; Moves value ( 1 ) into BL CALL 80 ; Call Subroutine 80 (delay routine) ; RED AMBER / RED ; Turn on all the traffic lights. MOV AL,D0 ; Copy 11010000 into the AL register. OUT 01 ; Send AL to Port One (The traffic lights). MOV BL,02 ; Moves value ( 2 ) into BL CALL 80 ; Call Subroutine 80 (delay routine) ; GREEN / RED MOV AL,30 ; Copy 00110000 into the AL register. OUT 01 ; Send AL to Port One (The traffic lights). MOV BL,1E ; Moves value ( 1E - 30SECS ) into BL CALL 80 ; Call Subroutine 80 (delay routine) ; AMBER / RED MOV AL,50 ; Copy 10100000 into the AL register. OUT 01 ; Send AL to Port One (The traffic lights). MOV BL,02 ; Moves value ( 2 ) into BL CALL 80 ; Call Subroutine 80 (delay routine) ; RED / RED MOV AL,90 ; Copy 01010000 into the AL register. OUT 01 ; Send AL to Port One (The traffic lights). MOV BL,01 ; Moves value (
Sexual attitudes and lifestyles.
a) Please give details of the research on which you are reporting Title: Sexual attitudes and lifestyles Author(s): Anne M. Johnson, Jane Wadsworth, Kaye Wellings, and Julia Field Date of publication/completion: 1994 Publisher or source: b) Outline of the Research design (210-300 words) You should state the objective of your chosen piece of research, and use this section to outline how the researcher/s carried out their research. You should describe the aims of the research and the research methods that were used. (You may wish to consider sample size, access to sample, ethics etc.) Johnson et al aimed to research sexual behaviour due to the emergence of AIDS in the 1980s. Before this study, the study of sexual behaviour was much neglected due to attitudes towards it. The Conservative government declined to finance the survey due its belief that personal business should be 'kept behind closed doors'. People working in the fields of fertility, sexual health and education were hindered in their work by the shortage of data. Luckily the 'Wellcome Trust' funded the research. With the emergence of the AIDS epidemic, up-to-date research was required. This study was the largest and most comprehensive survey of sexual behaviour ever conducted. The information was collected from over 19,000 randomly selected British representatives selected through the Post office postcode
Describe the principal methods used by investment banks to compute their Value at Risk to movements in market prices. What are the advantages and limitations of using such measures?
Describe the principal methods used by investment banks to compute their Value at Risk to movements in market prices. What are the advantages and limitations of using such measures? . Introduction Philippe Jorion defines Value at Risk (VaR) as a model used to "summarise the maximum loss on a portfolio in a given time horizon, within a given confidence level". VaR is the main method for financial institutions to measure their exposure to risk. In the world of banking today, risk management is becoming an important subject as banks strive to prevent events such as LTCM occurring again. There are several types of risks that banks face. These are: operational, market, credit, liquidity and business risks. There four steps to calculating VaR. First, the risk manager must collect all the data, regarding losses previously made and information about the risk factors involved. The risk factors must be identified. There are four main steps risk factors employed in a VaR model, which are: the decline or rise in interest rates and equity prices, or the movement in commodity and currency prices. The risk manager must then choose the appropriate method of calculating VaR. This could be Delta Normal, Historic Simulation, or Monte Carlo Simulation. Finally, when all the information and data is inputted, the VaR can be calculated. This essay will focus on how the principle methods of
An investigation to determine the effect of temperature on the permeability of beetroot cells.
Katie Ruck An investigation to determine the effect of temperature on the permeability of beetroot cells Evaluation Although an apparent trend is illustrated by the experimental data plotted, I am reluctant to formulate a valid conclusion on the effect of temperature on the permeability of beetroot cells due to the variability of the results obtained. Although five repeats were performed, the data collected is not reliable because of variation within the sets of results. This could have been due to various limitations of the experiment. At 30oC for example, the reading for absorbance of light in arbitrary units, was 0.12%. When compared to the results collected from other repeats at this temperature, this appears to be an unusually high value. Further examples of possible anomalous data were 0.03% at a heat treatment of 40oC together with 0.06% at 50oC. If these anomalous results were not included in the mean absorbance plotted, this could have had a significant effect on the overall conclusion. For example, had the reading at 40oC not been included in the mean, the reading plotted at this temperature of heat treatment may not have been lower than the mean result plotted at 30oC, as is shown on the graph by a slight dip. The size of the range bars causes one to question the reliability of the experimental data. These are especially large at higher temperatures of
COMPUTER STUDIES INTERNET & INTRANET SECURITY
The exam should follow examination format which should consists of 6 questions with 25% each and student will need to attempt only 4 questions. NCC INTERNATIONAL ADVANCED DIPLOMA IN COMPUTER STUDIES INTERNET & INTRANET SECURITY DECEMBER 2003 EXAM CYCLE CANDIDATES SHOULD ATTEMPT FOUR QUESTIONS ONLY Date : 23rd November, 2003 Time Allowed: 3 Hours MARKING SCHEME Please attempt any four from question 1 to 6 Clearly cross out surplus answers ANSWER ANY FOUR QUESTIONS ONLY QUESTION 1 (25 points) As a security manager, you need to implement security measures to detect intrusions from LAN. You boss need some understanding of IDS before approving your solution. a) How many types of IDS are available? Name them all and describe each (8 marks) Ans: -Host Based IDS (HIDS) - Similar to NIDS but only analyzes network traffic to and from a single machine (1.6) - Network IDS (NIDS) - Analyzes packets on a network and tries to determine if a hacker is trying to break into a system. An NIDS typically runs on a hub or a router, analyzing all traffic flowing through the device (1.6) - System Integrity Verifier (SIV) - keeps track of critical system files and notifies an administrator when they are altered. (1.6) - Log file Monitor (LFM) - Scan through logs generated by network services looking for attacks Patterns. (1.6) - Honeypot - A deception system that has
