...process equipment used for heat transfer between two media. The media do not come into direct contact and there is no mixing. Heat is transported from the hot medium to the cold medium by way of a heat conducting partition. In this experiment, we analysed the working principle of parallel and counter flow. We observed different fluid temperatures, fluid flow rates and how this affected the heat exchangers performance. Calculations were needed to determine the variation of the two configurations. There are some possible percentage errors that need to be considered in the experiment, these include the tube changeover from parallel to counter flow, the fluid loss will have an effect on the readings. Also if the unit is not allowed enough time to stabilise when changing the flow rates, the readings will not be accurate. 1"Vh"(L/min) Parallell"flow Counter"flow Vs U"= U"= 3"Vc"(L/min) 2.9"W/m 2 K 3.5"W/m 2 K The percentage difference between the U values is 20.6 %. II. Table of Contents 1. INTRODUCTION ........................................................................................................... 1 2. THEORETICAL BACKGROUND ....................................................................................... 2 2.1. FORMULAE NEEDED .......................................................................................................... 2...
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...A BLOOD ALCOHOL MEASUREMENT DEVICE USING A FIXED FREQUENCY PHOTOSPECTROMETER BY LUCILLE J. DURFEE ABSTRACT There are many people who go out for a night on the town without thinking about the potential dangers of drinking alcohol and then driving. A simple, non-invasive system is needed to test these people before they leave the bar to determine if they are “okay” to drive. The purpose of this project is to study, design ,build, and test a fixed frequency photospectrometer that will test the blood alcohol content of a person non-invasively. BACKGROUND Over the past decades a new method for measurement has been rapidly envancing. This method is a photonic technique that envolves electromagnetic radiation. Electromagnetic radiation has several forms including visible and infrared light radiation. Visible light radiation ranges from 370nm to 760nm, while infrared ranges from 760nm to approximately 1OE-4nm. Mark A. Arnold at the university of Iowa in Iowa City and Gary W.Small at Ohio University in Athens have been focusing on near-infrared (800nm to 1000nm) absorption spectroscopy as a solution to non-invasive glucose monitoring. Problems that have occurred revolve around the broad absorption signals of near-infrared radiation making it more difficult to identi@ a specific analyte. Arnold estimates that a working device is still five years away. A Biophotonic success is the Pulse Oximeter. It is a ten year old deviqe used to monitor patient’s conditions under anesthesia. It...
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...Pawitra C. A Critical Review of “Developing Critical Thinking and Assessment in music classrooms” As many American students have a difficulty to reach a goal of testing standard makes music teachers are required to add the reading and writing skills in their classrooms. Maria Stefanova has provided some options to solve this problem in the article called “Developing Critical Thinking and Assessment in music classrooms”. It was published in May, 2011 by American String Teacher. In the article, she presents five classroom strategies to fill the gap between music and literacy classes. The first strategy is a prior step of the class which requires teachers to survey the students about their interest and background, while the second one could be done at the end of the class as an “exit ticket”. The next two are tactics which conceal the knowledge behind the performances and inviting a musician as a guest to classroom. The last one is to ask students to record their homework constantly. The author says that “[these strategies are] not only strengthening music instruction, but also to develop active thinking and assessment tools in the music classroom” (Stefanova, 2001). Most of the strategies are agreeable, however, I have a different point of view in some issues. Maria (2011) says that it is important for teachers to know more about their students’ interest and background to help them improve their skills, especially for new students. It is better to use written form of survey...
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... ***IMPORTANT: Read the lab procedure completely before beginning. Reading for Next Week Chapter 11 and 12 in Practical Guide to Red Hat Linux Exercise 1: Virtual Library research Search and explore the ITT Tech Virtual Library for resources on bash. Use the following keywords and phrases to help you locate appropriate resources: * bash scripts * bash history * the bourne shell * bourne again shell * commands in Linux Required Resources Access to the Internet Access to ITT Tech Virtual Library Submission Requirements * Students bring to class the following: * one printed copy of one pertinent resource found through the ITT Tech Virtual Library * one printed copy of one pertinent resource found through the Internet * Students should be prepared to share and discuss one or two critical points from each resource with classmates. * After small group discussion, students will hand in the printed copies of resources for a pass/fail grade. (print an extra copy for yourself to take notes on and keep.) The resources must pertain to the given topic to receive a passing grade. * Note: If the resource shared is a full website or tutorial, you can just print the lead page that gives key information about the content of the resource. (cont’d) Exercise 2: Accessing the man Pages 1. Start the primary system and log in as the regular none-privilege user 2. Read the man page on man. ...
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...Wireless Security and Monitoring for the Home Network Raymond Turner Version 1.4b GIAC GSEC Practical Assignment August 21, 2003 Abstract Marketing trends estimate that by the end of 2006, 21 million homes will have implemented a Local Area Network (LAN), and of those 21 million homes 65% will use wireless solutions. [1] The rapidly decreasing cost for wireless devices and the proliferation of wireless solutions provided by the major Internet Service Providers seems to clearly support these growth estimates. Key fingerprint = AF19 FA27 2F94 998D FDB5 DE3D F8B5 06E4 A169 4E46 Home wireless users and security professionals the world over are conceptually trying to solve similar problems. They both need to find a way to provide a secure working environment. There are two distinct approaches to this security dilemma, security prevention, and security detection. An example of security prevention would be a firewall device that restricts specific traffic or ports to or from specific hosts. Although this provides protection against unauthorized traffic, it has no means for determining if an attack is being attempted via an authorized port. An example of security detection would be an IDS (Intrusion Detection System) device that contains a signature to identify a specific attack via authorized or unauthorized ports. [2] Security professionals often have the technology and resources to develop security solutions based on prevention, detection, or a combination of the two. However, home...
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...Thermal Power Systems School of Engineering and Design ©2012 Brunel University Thermal Power Systems Module Code and Title: Title of Assignment: Academics responsible: ME2301, Thermofluids Thermal Power Lab Report T1 (Gas Turbine), Prof. T. Megaritis T2 (Refrigeration, Dr L. Ganippa Contribution to total module mark: 15% Suggested Allocation time: 20 hours Submission Date: Tuesday 8 January 2013 NO LATER THAN 4:00pm on the submission date to the General Office for FULL credit. Otherwise, a penalty for late submission as specified by the Board of Studies will apply. (NOTE: ANY MITIGATING CIRCUMSTANCES must be notified a.s.a.p. Failure to print work on the project in good time, or other machine-related failure will not be deemed to be a Mitigating Circumstance). Aims: • To show an understanding of the principles of vapour compression refrigeration cycle • To appreciate and apply thermodynamic analysis to a refrigerator • To show an understanding of the principles of a gas turbine power plant Specification of Assignment: The assignment comprises two parts: Part 1: Laboratory report on Refrigeration Experiment Part 2: Brief description of the gas turbine apparatus, its operation and sample calculation Specification of the material to be submitted: Marking Scheme Front cover: Title, name, group number, and the date of experiments Introduction and objectives of the Refrigeration Experiment 5% Sketch and brief description of the Refrigeration Experimental Setup 5% Refrigeration...
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...under the heading Personalize your copy of Office. (2) 2. Save this document as [your lastname_firstname]_Outlook Web Access Assignment. Remove square brackets and text between and replace with your lastname_firstname. (1) 3. Refer to the Outlook Web Access – The Basics presentation to assist you in answering the following questions. 4. What is the name of the special Microsoft e-mail server which stores all e-mail for faculty, staff and students? (1) Email is stored on an Exchange Server for all faculty, staff, and students. 5. What is the difference between choosing a Public or Private computer when accessing OWA? (1) • Public or Shared Computer: Select this option if you use Outlook Web Access on a public computer. Be sure to log off when you have finished using Outlook Web Access and close all windows to end your session. • Private Computer: Select this option if you are the only person who uses this computer. Your server will allow a longer...
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...Bash Guide for Beginners Machtelt Garrels Garrels BVBA Version 1.11 Last updated 20081227 Edition Bash Guide for Beginners Table of Contents Introduction.........................................................................................................................................................1 1. Why this guide?...................................................................................................................................1 2. Who should read this book? .................................................................................................................1 3. New versions, translations and availability.........................................................................................2 4. Revision History..................................................................................................................................2 5. Contributions.......................................................................................................................................3 6. Feedback..............................................................................................................................................3 7. Copyright information.........................................................................................................................3 8. What do you need? .......................................................................................................................
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...responsibility for any damages of any kind resulting from the use of any knowledge in this guide. By reading further, you agree release HackMac.org from any and all liability, and assume all responsibility for your own actions. No part of this publication shall be reproduced, transmitted, or sold in whole or in part in any form, without the prior written consent of the author. All trademarks and registered trademarks appearing in this guide are the property of their respective owners. Users of this guide are advised to use their own due diligence when it comes to making any sort of decisions and all information, products, and services that have been provided should be independently verified by your own qualified professionals. By reading this guide, you agree that HackMac.org and its authors are not responsible for the success or failure of your decisions relating to any information presented in this guide. © 2011 HackMac.org All Rights Reserved 3 Table of Contents Chapter 1: The Admin Hack! Boot into Single-User Mode! Mount the Hard Drive! Remove the “Setup has been completed” File! Reboot! Watch the Video! Continue Setup! Set up the Administrator Account! Finish Setup and Log In! 5 6 6 6 7 7 7 8 8 Chapter 2: Enable The Root User! Option 1: Enable Root Via GUI! Option 2: Enable / Change Root Password Via Terminal! 9 10 11 Chapter 3: Removing Traces! Log Out and Login as Root! Delete The Administrator Account! 12 13 13...
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...Mastering Unix Shell Scripting Randal K. Michael Free & Share & Open The Dear Valued Customer, WILEY advantage We realize you’re a busy professional with deadlines to hit. Whether your goal is to learn a new technology or solve a critical problem, we want to be there to lend you a hand. Our primary objective is to provide you with the insight and knowledge you need to stay atop the highly competitive and everchanging technology industry. Wiley Publishing, Inc., offers books on a wide variety of technical categories, including security, data warehousing, software development tools, and networking — everything you need to reach your peak. Regardless of your level of expertise, the Wiley family of books has you covered. • For Dummies – The fun and easy way to learn • The Weekend Crash Course –The fastest way to learn a new tool or technology • Visual – For those who prefer to learn a new topic visually • The Bible – The 100% comprehensive tutorial and reference • The Wiley Professional list – Practical and reliable resources for IT professionals The book you hold now, Mastering Unix Shell Scripting, is the first book to provide end-to-end scripting solutions that will solve real-world system administration problems for those who have to automate these often complex and repetitive tasks. Starting with a sample task and targeting the most common Unix systems: Solaris, Linux, AIX, and HP-UX with specific command structures, this book will save precious time with hands-on...
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...5 Reading, Writing, and Speaking in Mathematics As teachers of mathematics, we sometimes forget that the words and phrases that are familiar to us are foreign to our students. Students need to master this language if they are to read, under stand, and discuss mathematical ideas. -Thompson & Rubenstein Thompson and Rubenstein were referring to the issue of language and mathematics learning in mainstream classrooms. They state vocabulary or the fluent use of terminology is a necessary condition for overall mathematics achievement. If the learning of mathematics is highly dependent on its language and the teaching of math vocabulary is crucial, it is doubly so for ELLs. English language learners in secondary schools should have many opportunities to communicate their mathematical ideas and questions. Talking and writing about their mathematical thinking helps ELLs build word knowledge and oral expression and clarify their thinking. Discussions with the teacher or peers are also useful monitoring tools for teachers. Through listening and recording student conversations and peer problem solving, teachers can monitor individual student progress. Mathematics is no longer viewed as isolated, individualistic, or competitive. Mathematics problems are ideally suited to cooperative group discussions because they have solutions that can be objectively demonstrated. Students can persuade one another by the logic of their arguments. Mathematics problems can often be solved by several...
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...[pic] JPPSS ELA COURSE GUIDE 2011-2012 ENGLISH I The JPPSS Instructional Sequence Guides are aligned with the LA Comprehensive Curriculum. JPPSS Implementation of Activities in the Classroom Incorporation of activities into lesson plans is critical to the successful implementation of the Louisiana Comprehensive Curriculum. The Comprehensive Curriculum indicates one way to align instruction with Louisiana standards, benchmarks, and grade-level expectations. The curriculum is aligned with state content standards, as defined by grade-level expectations (GLEs), and organized into coherent, time-bound units with sample activities and classroom assessments to guide teaching and learning. The units in the curriculum have been arranged so that the content to be assessed will be taught before the state testing dates. While teachers may substitute equivalent activities and assessments based on the instructional needs, learning styles, and interests of their students, the Comprehensive Curriculum should be a primary resource when planning instruction. Grade level expectations—not the textbook—should determine the content to be taught. Textbooks and other instructional materials should be used as resource in teaching the grade level expectations...
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...Oracle/SQL Tutorial1 Michael Gertz Database and Information Systems Group Department of Computer Science University of California, Davis gertz@cs.ucdavis.edu http://www.db.cs.ucdavis.edu This Oracle/SQL tutorial provides a detailed introduction to the SQL query language and the Oracle Relational Database Management System. Further information about Oracle and SQL can be found on the web site www.db.cs.ucdavis.edu/dbs. Comments, corrections, or additions to these notes are welcome. Many thanks to Christina Chung for comments on the previous version. Recommended Literature George Koch and Kevin Loney: Oracle8 The Complete Reference (The Single Most Comprehensive Sourcebook for Oracle Server, Includes CD with electronic version of the book), 1299 pages, McGraw-Hill/Osborne, 1997. Michael Abbey and Michael Corey: Oracle8 : A Beginner’s Guide [A Thorough Introduction for First-time Users], 767 pages, McGraw-Hill/Osborne, 1997. Steven Feuerstein, Bill Pribyl, Debby Russell: Oracle PL/SQL Programming (2nd Edition), O’Reilly & Associates, 1028 pages, 1997. C.J. Date and Hugh Darwen: A Guide to the SQL Standard (4th Edition), Addison-Wesley, 1997. Jim Melton and Alan R. Simon: Understanding the New SQL: A Complete Guide (2nd Edition, Dec 2000), The Morgan Kaufmann Series in Data Management Systems, 2000. 1 revised Version 1.01, January 2000, Michael Gertz, Copyright 2000. Contents 1. SQL – Structured Query Language 1.1. Tables 1.2. Queries (Part I) 1.3. Data Definition...
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...Authority, Incentives and Performance: Theory and Evidence from a Chinese Newspaper Yanhui Wu London School of Economics Job Market Paper February 2011 Abstract Authority de…nes the formal structure of an organization, and is essential for the allocation of resources inside the …rm. This paper develops a theory of authority in a multiple layer hierarchy, in which the distribution of authority alleviates incentive incompatibilities. To examine the theory, I collect monthly personnel data from about 200 journalists over three years in a Chinese newspaper, and provide evidence on their incentives and performance under two basic organizational forms — centralization and decentralization. Relying on an unexpected organizational reform from decentralizing to centralizing editorial power in some divisions of the newspaper, I …nd three main results: 1) centralization improves the quality of the journalists’performance, in terms of the newspaper’ inters nal assessment and the external measures of news content; 2) centralization reduces the journalists’activities for private gain; 3) centralization decreases the editorial activities conducted by managing editors. These results are in line with the theory: a more centralized hierarchy achieves better control over workers’ opportunistic behaviour, at the cost of depressing middle managers’initiative. Key Words: Authority, Organizational Structure, Incentives, Information, Action Distortion, Decision Bias, Media Bias JEL Classi…cations:...
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...CHAPTER 7 INFORMATION SYSTEM CONTROLS for SYSTEMS RELIABILITY SUGGESTED ANSWERS TO DISCUSSION QUESTIONS 7.1 1. Encryption is the final layer of preventative controls in that encrypting data provides a barrier against an intruder who has obtained access to company data. Encryption employing a digital signature and a public key infrastructure (PKI) can also strengthen authentication procedures and helps to ensure and verify the validity of e-business transactions. The digital signature is some sort of identifying information about the signer that is encrypted with the signer’s private key. This identifying information can only be decrypted using the corresponding public key. Since a private key is only known to it’s owner, only the owner can hold both the public and the private key and be the creator of the digital signature. Thus, digital signatures can be used to authenticate a particular party involved in a transaction as being the creator of a document. This provides for non-repudiation: the creator of the digital signature cannot deny having signed a document.. A digital certificate is an electronic document that is digitally signed by a trusted third party that certifies the identity of the owner of a pair of public and private keys. The PKI is a system that is used to process and manage the public and private keys used in digital signatures and digital certificates. An organization that handles digital certificates is called a certificate...
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