First generation wireless systems, which primarily provide analog voice service, are widely in use worldwide. Second generation systems support digital voice/data traffic; some of these systems are already deployed or undergoing deployment. Third generation wireless networks will ultimately carry multimedia traffic that are characterized by combination of different informaion streams of diverse nature (e.g., voice, video, image, data). Some of the salient features of multimedia applications are high speed and changing bit rates (periodic and bursty arrivals), several virtual connections over the same access, synchronization of different information streams, and various service/deliveIy requirements (QoS).
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Because the properties of aluminum alloys are dependent upon both the exposure temperature and also to the length of time of exposure, the prediction of design values for structures designed to last many years is a significant challenge. For relatively short-life structures, the need is addressed simply by planning ahead and carrying out a test plan that replicates the intended service conditions. This is feasible for structures whose design life might be as much as a year or even five years, but it is not very practical for structures for which the life expectancy is 10 years or more.
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Virtual Observatory (VO) is a collection of interoperating data archives and software tools. Taking advantages of the latest information technologies, it aims to provide a data-intensively online research environment for astronomers all around the world. A large number of high-qualified astronomical software packages and libraries are powerful and easy of use, and have been widely used by astronomers for many years. Integrating those toolkits into the VO system is a necessary and important task for the VO developers.
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Although traditional firewalls have effectively prevented network-level attacks, most future attacks will be at the application level, where current security mechanisms are woefully inadequate. Application-level security vulnerabilities are inherent in a Web application’s code, regardless of the technology in which the application is implemented or the security of the Web server and backend database on which it is built. A recent advisory published by Internet Security Systems (see the “Internet Resources” sidebar, p. 44) claims that 11 widely deployed shopping cart applications are vulnerable to a simple attack that lets hackers pur- chase goods for much less than their listed price. Worryingly, the attack does not require particular technical skill; it suffices to save the shopping cart’s HTML confirmation form to disk, use a text editor to modify the price of the goods (stored in a hidden form field), and load the HTML form back into the browser.
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E-commerce, pay-per-use online services, user-authentication and tracking for e-learning, online gaming, contests… What do all of these applications have in common? The need for secure transfer of encrypted data between client workstations and server applications. According to a study by Gartner Consulting, the growing concern for Internet security parallels the evolution of e-business. In the earliest days of Internet development, the emphasis was on distributing content over the web and making it available to anyone. Now, as the Internet matures, clients are more concerned with ensuring that their assets, both monetary and intellectual, are protected from those who may commit fraud or abuse them. This is why more and more developers have been looking for security solutions.
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The PL-2303 USB to Serial adapter is your smart and convenient accessory for connecting RS-232 serial devices to your USB-equipped Windows host computer. It provides a bridge connection with a standard DB 9-pin male serial port connector in one end and a standard Type-A USB plug connector on the other end. You simply attach the serial device onto the serial port of the cable and plug the USB connector into your PC USB port. It allows a simple and easy way of adding serial connections to your PC without having to go thru inserting a serial card and traditional port configuration.
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The 1,000,000 plant specimens stored at the National Herbarium of New South Wales are a major resource used by scientific botanists to confirm the identification of plants. The Digital Imaging project will provide an Internet- accessible electronic image bank of the herbarium collections. These data will be managed in the NSW collections database system. The images will be accessible through PlantNET on the RBG website. The first phase of the project will include all NSW native (including rare and endangered) and weedy species, subspecies and varieties. This web based database will provide a resource that can be used to confirm plant identifications by the community. This project will link images and enhance the continuing development of the EucaLink, WattleWeb and other similar projects that are part of PlantNet. It is also closely coordinated with the national Australia’s Virtual Herbarium (AVH) project being undertaken by all herbaria in Australia.
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As already mentioned in the short summary above the scenario used for this collaboration brief deals with two key components: Microsoft Active Directory and SAP Central User Administration. Active Directory, being the integrated, distributed directory service included with Microsoft Windows Server 2003 and Microsoft Windows 2000 Server, provides a central user repository used to centrally maintain user data, thus avoiding the redundant, error-prone maintenance of user information in several systems. Most organizations already use Active Directory to organize and manage information about all kinds of their different resources like users, computers, applications and so on.
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