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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Silicon firewall prototype

Cheng, Jin 18 December 2003 (has links)
The Internet is a technological advance that provides access to information, and the ability to publish information, in revolutionary ways. There is also a major danger that provides the ability to corrupt and destroy information as well. When a computer is connected to the Internet, three things are put at risk: the data storage, the computing resources and the users reputation. In order to balance the advantages and risks, the contact between a computer and the Internet or the contact between different networks should be controlled carefully. <p>A firewall is a form of protection that allows a network to connect to the Internet or to another network while maintaining a degree of security. The firewall is an effective type of network security, and in most situations, it is the most effective tool for doing that. <p>With the availability of larger bandwidth, it is becoming more and more difficult for traditional software firewalls to function over a high-speed connection. In addition, the advances in network hardware technology, such as routers, and new applications of firewalls have caused the software firewall to be an impediment to high throughput. This network bottleneck leads to the requirement for new solutions to balance performance and security. Replacing software with hardware could lead to improved performance, enabling the firewalls to handle significantly larger amounts of data. <p> The goal of this project is to investigate if and how existing desktop computer firewall technology could be improved by replacing software functionality with hardware (i.e., silicon). A hardware-based Silicon Firewall system has been designed by choosing the appropriate architecture and implemented using Altera FPGA (Field Programmable Gate Array) on a SOPC (System On a Programmable Chip) Board. The performance of the Silicon Firewall is tested and compared with the software firewall.
52

Registered Dietitian Interest in Complementary Medicine

Johnson, Gwenyth Llewellyn 20 November 2009 (has links)
Complementary and alternative medicine (CAM) has become very popular with populations internationally and in the United States. CAM is defined as “a group of diverse medical and health systems, practices and products that are not generally considered as part of conventional medicine”. CAM is described as having five specific divisions: whole medical systems, mind-body medicine, biologically-based practices, manipulative- or body-based practices, and energy medicine. Recent studies have shown that CAM use is increasing. In the US 33% of the population reported using CAM in 1990, but 1997 usage rates increased to over 41%. The popularity of CAM is one of the reasons for the creation of the National Center for Complementary and Alternative Medicine (NCCAM) by the National Institutes of Health the Federal Government's lead agency for scientific research on the diverse medical and health care systems, practices, and products that are not generally considered part of conventional medicine”. NCCAM information was the foundation for this project. The goals of this project are to evaluate the interest of dietitians in Georgia in CAM and introduce participants of this project to a segment of CAM treatments. The primary research question is: Are dietitians in the state of Georgia interested in using CAM as part of their practice? There were three distinct portions to this project; the initial survey of the dietitian participants, the development and use of the introductory CAM lesson, and the evaluation of this lesson and final survey. The data from both the first and second surveys as well as the post test does support a positive answer to the research question, “Are registered dietitians in the state of Georgia interested in CAM? The results clearly indicate an interest from both the survey 1 and survey 2/ post test group. Some may ask, “Is this really of any importance to the dietetics profession?” The answer to this can be found in the nutrition literature. Conducting a topic search of “Complementary and alternative medicine” in three predominant nutrition journals: the American Journal of Clinical Nutrition, The Journal of Nutrition and The Journal of the American Dietetic Association, revealed more than 17,000 articles. These articles range for original research to review of original research to commentary articles evaluating the use of CAM to the dietetics practice. A number of articles addressed the importance of CAM in dietetics education as well as its importance to the practice and reimbursement for services.
53

A Study on Machining of Impellers with Ruled Surfaces

Chen, Jiun-Ren 21 July 2000 (has links)
Impellers are important components in the field of precision machine, energy technology, and aerospace industries. Due to their complex geometries and higher degrees of interference, to produce a impeller with high precision dimension is a challenging technology. In this study, flank milling is used to machine blade surfaces of impeller instead of point cutting. Flank milling can provide a surface better than point cutting without addition processes. When blades of an impeller are designed by ruled surfaces, the impeller can be machined by flank cutting technology. Based on the type of a five-axis CNC machine, the objective of this project is aimed to develop the technology of five-axis machining for impellers. The involved techniques are : the identification of undercutting in flank cutting for ruled surfaces, five-axis tool paths generation, coordinate transformations for five-axis machining, and determination of cutting parameters. In addition, a practical application example is provided to show the feasibility and effectiveness of the developed procedure.
54

Skill and organizational complementarities to CAD/CAM technology use in small and medium sized manufacturing firms /

Gallardo L., Antonio J. January 2003 (has links)
Thesis (Ph. D.)--Lehigh University, 2004. / Includes vita. Includes bibliographical references (leaves 294-307).
55

CAD/CAM data base management systems requirements for mechanical parts

Whelan, Peter Timothy 08 1900 (has links)
No description available.
56

Studies on CAD/CAM integration for milling operations using optimum machining parameters /

Tolouei Rad, Madjid. Unknown Date (has links)
Thesis (PhD)--University of South Australia, 1997
57

An innovative reverse engineering approach to surface model reconstruction /

Chen, Liang-Chia. Unknown Date (has links)
Thesis (PhD)--University of South Australia, 2001
58

Integration of unigraphics and cost advantage for aircraft engine parts configuaration

Chintamaneni, Prashantkumar. January 2000 (has links)
Thesis (M.S.)--Ohio University, March, 2000. / Title from PDF t.p.
59

The intelligent manufacturing workstation

Chandrasekar, Subramanian. January 1999 (has links)
Thesis (M.S.)--Ohio University, June, 1999. / Title from PDF t.p.
60

The enhancement of PHIGS plus B-spline functionality for geometric modeling in CAD /

Fleming, Steven, January 1992 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 87-91). Also available via the Internet.

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