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Mohr Circles, Stress Paths and Geotechnics
By Richard H Parry
Publisher: Taylor & Francis
Number Of Pages: 272
Publication Date: 2004-06-15
ISBN-10 / ASIN: 0415272971
ISBN-13 / EAN: 9780415272971
Mohr Circles are a powerful and widely used technique for representing stresses and strains in soil and rock, and for converting test data into design parameters, but they have many other uses in solving geotechnical problems. Mohr Circles, Stress Paths and Geotechnics gives a unified presentation of the theory and application of the techniques, and is the only book to examine the behavior of both soil and rock in a fundamental and comprehensive manner.
The second edition of this well established book has been comprehensively updated in line with recent developments. After presenting the fundamentals of stress and strain, and their graphical representation, the book includes chapters on failure states in soils and rocks, observed and elastic paths, and the use of discontinuities.
New sections include shear bands and small strain behavior, as well as the use of elastic shear modular stress calculations and discontinuities in plasticity calculations. Expanded coverage is also given to dilitancy of soils and roughness of rock joints.
Mohr Circles, Stress Paths and Geotechnics will be invaluable for geotechnical engineers in teaching, research and practice.
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Cold-Formed Steel Structures to the AISI Specification
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Cold-Formed Steel Structures to the AISI Specification
By Gregory J. Hancock, Thomas Murray, Duane S. Ellifrit
Publisher: CRC
Number Of Pages: 416
Publication Date: 2001-07-27
ISBN-10 / ASIN: 0824792947
ISBN-13 / EAN: 9780824792947
This volume reveals the behaviour and design of cold-formed steel structures, connections and systems. It describes the AISI Specification for the Design of Cold-Formed Steel Structural Members published in July 2000, which governs the design of all cold-formed steel frames, including roof, wall and racking systems, and cold-formed steel residential construction in the USA. The text offers worked examples which can be programmed using MATHCAD or EXCEL
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JonDo - the free client software for JonDonym
JonDo is a free, open-source and highly portable (Java-based) client software for accessing the JonDonym services. Its primary use is the anonymisation of web site requests against web site operators, internet providers and the anonymisation service Operators.
All requests of the web browser have to be processed by the JonDo program instead of accessing the internet directly. JonDo encrypts the data and sends it to the first Mix of a Mix Cascade. The first Mix then mixes the data with that of other users and sends it to the second mix station which passes it on to the third mix station which decrypts and sends the data through a cache proxy to the internet.
Each mix carries out cryptographic operations on the message so that the JonDo-encrypted data is only readable after having passed through the proper mixes in the proper order. This ensures that an eavesdropper either only receives unreadable (encrypted) data or can no longer determine the sender. In order for it to work correctly, only one mix in the cascade needs be trusted not to inform the eavesdropper about the method of message mixing. The more users that use the cascade, the harder it is for an observer to distinguish single users.
Data retention resistance By the distribution on different, independent operator organisations and countries, the JonDonym service is secure against data retention. Even if single operators have to store data, this does not create an "overall picture" needed to uncover the identity of users. Thus, JonDonym provides maximum protection against operators and third parties.
Moreover, the system provides so-called forwarding functionality. Users can connect to the service even if it is blocked by their provider. This is often the case in countries that are known for heavy censorship. Unblocked users of the service (Forwarding servers) may voluntarily forward other JonDonauts (Forwarding clients) to the Mix Cascades.
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Privacy, Security and Freedom
About UltraReach
Founded by a group of successful entrepreneurs, renowned scientists and engineers in Silicon Valley who dedicated to providing technologies and service for people to exchange information on Internet freely and safely, UltraReach is the first company with a mission that offers Internet technology and service immune to the national Internet censorship in China.
Internet anti-censorship technology was thought of as "mission impossible" two years ago. We started thorough R&D on other existing technologies as well as from end users' perspective. While other existing technologies were developed for user's privacy and anonymity on Internet, we solved the connection and reconnection problem, which is the key issue for user to access web site without being blocked. Built on solid theoretical analysis and professional quality, UltraReach has successfully invented the technology platform called the GIFT system, which offers guaranteed connection and reconnection service to users inside these censor countries and capability of serving very large number of users with affordable resource. More than one year live service performance has proved that the GIFT technology has successfully broken through the so-called "Great Firewall" which is built with state-of-art firewall equipments and softwares with virtually unlimited resource from government.
Powered by GIFT technology, UltraReach.Net portal is the first home page for users to visit when they are connected to our service. Through the web portal users inside the censored zones can surf any public web sites in the free world. It naturally becomes a precious window for users inside China to look out for world news and other web contents that are blocked. The UltraReach.Net attracts thousands of users in China with daily news stories, featured articles and links from world media, governmental and non-governmental organizations, different groups and individual sites.
The outstanding performance of our service has made UltraReach Internet well known among the users who seek the Internet freedom in the censored country, and at the meantime attracted heavy attacks from Chinese Internet police. The GIFT system has survived various assaults including DNS hijacking, IP blocking, DOS attacking etc. We've taken the threats from the censor as opportunities to continuously improve the performance and reliability of our technology. In fact, the GIFT system has been mature enough for reliable service and it depends on the financial resource to expand its user base.
The next-level solution from UltraReach Internet as well as the real time performance has proved that our system and service is by far superior to other existing technologies. The main differentiators consist of anti-blocking power, connection and re-connection capability and the ability to serve and maintain a very large number of users from inside China. As the clear leader among the Internet anti-jamming technology and service providers, we are currently the only one that can offer reliable service to deliver web contents to the massive number of users in China.
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WinZip® 12.1, released in May 2009, introduces the new extended Zip file (.zipx), the next step in the evolution of the Zip file format. Additionally, the Zip and E-Mail functions have been enhanced to in WinZip 12.1 to allow users to take advantage of the image resize feature in WinZip.
Description:
* Introduction of the new .zipx file extension. By using advanced compression methods to create Zipx files, WinZip 12.1 creates WinZip's smallest Zip files to date.
* Ability to resize images being sent during Zip and E-Mail functions. Users can quickly and easily resize images during the zip operation without altering the original in any way.
Best of all, if you're a registered user of any previous version of WinZip, you can upgrade to WinZip 12.1 for 50% off the regular list price by visiting our Upgrade Page.
If you are a registered user of WinZip 12, you can receive the WinZip 12.1 update free. Just download the update at: h**p://www.winzip.com/downwz.htm
Zipx Files Deliver Advanced Compression
.Zipx files
WinZip 12.1 introduces the new extended Zip file (.zipx), the next step in the evolution of the Zip file format. By using the most recent compression methods to create .Zipx files, WinZip 12.1 creates WinZip's smallest Zip files to date. The new .zipx file extension also makes it easier to share highly compressed files with others by making it clear that the file was created using an advanced compression method and that WinZip 12.1 or another compatible compression utility is required to open the file. Of course users can also still create “Legacy Zip 2.0” compressed files with WinZip 12.1 (resulting in a .zip file extension) by changing the compression method on a case by case basis or by changing the default compression method.
Photo Compression, Management and Sharing
Resize images on the fly
Additionally, the Zip and E-Mail functions have been enhanced in WinZip 12.1 to allow users to take advantage of the image resize feature in WinZip. Users can quickly and easily resize images in a zipped attachment without altering the original in any way. Resizing images is useful when the recipient does not need the full quality or size of the original. Resizing images before compressing them can substantially reduce the attachment size, reduce upload and download times for your e-mails, and help ensure that you don’t exceed e-mail attachment size limitations.
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API 650 Standard for Welded Steel Tanks for Oil Storage covers material, design, fabrication, erection, and testing requirements for aboveground, vertical, cylindrical, closed- and open-top, welded steel storage tanks in various sizes and capacities. Applies to tanks with internal pressures approximating atmospheric pressure, but higher pressure is permitted when additional requirements are met. This standard applies only to tanks whose entire bottoms are uniformly supported and in nonrefrigerated service with a maximum operating temperature of 90°C (200°F). (Purchase includes addenda to the current edition of the standard.) (API650, API 650, API-650, 650API).
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Dear Admin,
Reading again the Rules and other important threads from this section I can say that almost all is covered by the rules.
It's not easy for you and take a lot of time but how many posts are against the rules ?
The rules are in bold characters and in a very nice color but rules without enforcement...
Admin wrote:
All inactive user will be deleted soon.
It's O.K. for me to contribute and to help others without compensation but reading every day:
Thank you .....
Muy buenas gracias...
when searching for something useful is boring.
Admin wrote:
We are planing to close registration after a period.
Closing.... I don't know but banning sometimes may be a good tool to reduce the inactive and not obedient users.
I don't remember my registration process but I think it must be clear and the candidate must approve every row like this:
1. The language of the forum is english only.
2. Read the rules before posting.
3. Use the THANKS button only.
4. Check your links before posting.
5. Use the search before posting to see that the subject is already in forum (no duplicates).
Finally, THANK YOU. It's a very good forum and get better every day.
Product Description:
Uses state-of-the-art computer technology to formulate displacement method with matrix algebra. Facilitates analysis of structural dynamics and applications to earthquake engineering and UBC and IBC seismic building codes.
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This volume in the Greenwood Technographies series covers urban mass transit - that is, the technologies that allow cities to move large numbers of people around. Just a few hundred years ago, the size of cities was limited by the time it took people to move from one part of the city to another. The development of successive technologies has forever altered the urban landscape. From horse-drawn omnibuses to subways to current light-rail, this volume highlights the technological and social struggles that have accompanied urbanization and the need for an efficient and cost-effective means of transportation in cities. Urban Mass Transit: The Life Story of a Technology follows the story of transportation in cities through all stages of its history:
Urbanization and transit by horsepower The introduction of mechanical power to run cable railways Electrification and the ascendance of the trolley The Rise of the motor vehicle and the decline of the trolley Rapid transit and the revival of mass transportation The volume includes a timeline, a glossary, and a bibliography of resources useful for further research.
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Computational Geomechanics with Special Reference to Earthquake Engineering
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Computational Geomechanics with Special Reference to Earthquake Engineering
By O. C. Zienkiewicz, A. H. C. Chan, M. Pastor, B. A. Schrefler, T. Shiomi
Publisher: Wiley
Number Of Pages: 398
Publication Date: 1999-05-11
ISBN-10 / ASIN: 0471982857
ISBN-13 / EAN: 9780471982852
Computational Geomechanics: introduces the full theory of dynamic and static behaviour of porous media and shows how computation can predict the deformations of a structure, subject to an earthquake or consolidation.
introduces the use of numerical, finite element procedures for soil and rock mechanics problems which has increased rapidly throughout the last decade.
provides a comprehensive survey of major, constitutive models, which can simulate soil behaviour rationally.
explains practical procedures based on computational experience for real projects with particular emphasis on earthquake engineering.
Static problems which occupy a particular area of dynamics can also be solved by identical methods, making the book relevant to all researchers and engineers concerned with geomechanics. Earthquake Engineering is stressed throughout as it is in this field that the most difficult examples arise; however, other applications are also noted
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Steel Tips
Seismic Behavior and Design of Steel Shear Walls
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Steel Tips
Design of Reduced Beam Section (RBS) MOment Frame Connection
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