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Topic: Ad-hoc

Ads by Google      Ad hoc - Wikipedia, the free encyclopedia One pitfall to watch out for with ad hoc reporting is that a user may inadvertently issue a very costly request to the database, a problem less prevalent when using canned reports which are generally created by developers with a better knowledge of the underlying database schema. note: Ad hoc queries may be made by users of a system, which are specific, customised queries that are not built in to query system" Often called ad hoc reporting, this implies a system that allows users to customize a data query (generally from a database) in real time, as opposed to one that limits them to canned (pre-created) reports. http://en.wikipedia.org/wiki/Ad_hoc   (834 words)      Mobile Ad Hoc Network Security The testing of ad hoc networking protocols in a laboratory environment allows researchers the opportunity to validate theories and simulations in practice, to test simulation assumptions, and to discover practical problems facing ad hoc network users and developers alike. Differentiating between malicious network activity and spurious, but typical, problems associated with an ad hoc networking environment is a challenging task. Testing ad hoc network implementations in a laboratory environment, however, also presents a number of challenges. http://csrc.nist.gov/manet   (2019 words)      Fallacies [Internet Encyclopedia of Philosophy] This error is a kind of ad hoc rescue of one's generalization in which the reasoner re-characterizes the situation solely in order to escape refutation of the generalization. An ad hominem fallacy is one kind of genetic fallacy, but the genetic fallacy in our passage isn't an ad hominem. The major difficulty with labeling a piece of reasoning as an ad hominem fallacy is deciding whether the personal attack is relevant. http://www.utm.edu/research/iep/f/fallacies.htm   (13501 words)      Ad hoc Reporting The result of this intelligent design is a more usable and user-friendly ad hoc reporting environment that end users can easily exploit to create any report with no training required. While feature richness is most important for professional report designers creating complex reports, the easy to use and shallow learning curve are the most prominent requirements for Ad hoc business users. Style Report’s ad hoc reporting embodies many sophisticated technical innovations that greatly simplify and enhance the user experience. http://www.inetsoft.com/inetsoft/applications/adhocreport.html   (444 words)      Ad Hoc The workshop is devoted to the design and analysis of efficient algorithms concerning ad hoc networks. The authors are invited to submit extended abstracts of papers on recent research in all areas of algorithms for ad hoc networks. computational complexity of algorithms for ad hoc networks http://ad-hoc.im.pwr.wroc.pl/info/index.php   (290 words)      Polymorphism (computer science) - Wikipedia, the free encyclopedia Ad-hoc polymorphism usually refers to simple overloading (see function overloading), but sometimes automatic type conversion, known as coercion, is also considered to be a kind of ad-hoc polymorphism (see the example section below). Polymorphism gained most of its momentum when object-oriented programming became a Polymorphism, in computer underground terms, also refers to http://en.wikipedia.org/wiki/Polymorphism_(computer_science)   (290 words)      Ad Hoc Reporting and OLAP solutions from Information Builders From the business analyst conducting complex analysis that integrates OLAP and Microsoft tools, to the novice user running structured ad hoc reports and performing reporting queries, users can quickly and efficiently satisfy their own information needs in real time using business terminology. Novice users running structured ad hoc reports and performing general reporting queries can quickly and efficiently satisfy their own information needs in real time: The WebFOCUS Report Assistant provides an intuitive, graphical interface that shields users from technical complexities and allows them to use business terminology instead of database terminology. http://www.informationbuilders.com/products/webfocus/ad_hoc.html   (475 words)      Making the Wireless Home Network Connection in Windows XP Without a Router Select Computer to computer (ad hoc) networks only and clear the Automatically connect to non-preferred networks box if it is selected. When a second computer is in range and the new ad hoc network is connected, the display changes to show a working computer-to-computer network without the X. Not only does ad hoc wireless networking provide a lower cost method to share an Internet connection than a more expensive wireless router/router plus separate access point solution, but it affords a fast and simple way of establishing a means to share data and documents for groups with no external LAN or Internet connection. http://www.microsoft.com/windowsxp/expertzone/columns/bowman/02april08.asp   (1359 words)      Columbia News ::: Ad Hoc Grievance Committee Publishes Report The ad hoc grievance committee was established as a result of the expression of concern by a number of students that they were being intimidated by faculty members and being excluded from participating fully in classroom discussions because of their views. Yet it was not until December 2004 that the ad hoc committee was formed, a delay that led to an acute erosion of trust between faculty and students. The ad hoc committee that will be created will allow us to resolve the current controversies in the period before the formation of the permanent committee. http://www.columbia.edu/cu/news/05/03/ad_hoc_grievance_committee_report.html   (9961 words)      Objective-C - Wikipedia, the free encyclopedia Objective-C in fact included a laundry-list of features that are still being added to other languages, or simply don't exist at all. Instead you must use helper objects, special proxy classes, or use the That means that the programmer can add categories to existing classes without them knowing about it. http://en.wikipedia.org/wiki/Objective_C   (9961 words)      Encyclopedia4U - Ad hoc protocol list - Encyclopedia Article An abstract routing protocol and medium access protocol for mobile ad hoc networks Submitted for partial fulfillment of the requirements for the degree of doctor of philosophy (Electrical engineering) in January 1999. ZHOU AND S. SINGH Content Based Multicast (CBM) in Ad Hoc Networks, Proceedings of the ACM/IEEE Workshop on Mobile Ad Hoc Networking and Computing (MOBIHOC), Boston, MA, August 2000, pp. DDR (Distributed Dynamic Routing Algorithm) - NAVID NIKAEIN, HOUDA LABIOD, CHRISTIAN BONNET Distributed Dynamic Routing Algorithm (DDR) for Mobile Ad Hoc Networks, in proceedings of the MobiHOC 2000 : First Annual Workshop on Mobile Ad Hoc Networking& Computing http://www.encyclopedia4u.com/a/ad-hoc-protocol-list.html   (1839 words)      Wireless Ad Hoc Networks Bibliography Kumar, "Architecture and algorithms in ad hoc wireless networks," ONR presentation. Hamidian, "A Study of Internet Connectivity for Mobile Ad Hoc Networks in NS 2," Master's thesis, Lund Institute of Technology, Sweden, January 2003. Feeney, "A Taxonomy for Routing Protocols in Mobile Ad Hoc Networks," Swedish Institute of Computer Science Technical Report T99/07, October 1999. http://w3.antd.nist.gov/wctg/manet/manet_bibliog.html   (9032 words)      Database At the same time, relational database software vendors have added features to allow objects to be stored more conveniently, drifting even further away from the relational model. Instead, objects are often stored in relational databases using complicated mapping software. Databases are used in many applications, spanning virtually the entire range of computer software. http://www.php-include.com/Database.php   (9032 words)      JEP-0050: Ad-Hoc Commands It also specifies a protocol for describing the types of ad hoc sessions, similar in concept to a menu. Added "Implementation Notes" section; Removed syntax requirements for disco "node" attributes; Added "disclaimer" with regards to "node" values; Added clarifications regarding predefined/required commands; Added clarifications for command payloads; Added clarifications for command success versus failure; Added clarifications on "sessionid"; Fixed "x:data" errors. Fixed minor errors with examples; Changed position of DTD to be more consistent with other JEPs by this author; Added details for "disco" support; Added section on "Security Considerations", "IANA Considerations", and "JANA Considerations". http://www.jabber.org/jeps/jep-0050.html   (3726 words)      Computer> Database [encyclopedia] One school of of though considers there is a fundamental impedance mismatch between the object and SQL data models, so misnamed object-relational databases require misnamed object-relational mapping software to map between the SQL model (row-oriented, ad-hoc querying) and the object-oriented model (polymorphic types, navigational traversal of objects). There are several design patterns and research papers on writing object-relational mapping software; additionally, there are many free-software and commercial solutions, with varying degrees of flexibility. Note that writing "object-relational" mapping software is a non-trivial task due to the polymorphic nature of containers in the object paradigm; in other words, it is not as simple as "take all fields in a record, copy them into the object, and voila! http://kosmoi.com/Computer/Database/   (3726 words)      Ad hoc protocol list - Wikipedia, the free encyclopedia An Ad hoc protocol is a convention or standard that controls how nodes come to agree which way route packets between computing devices in a mobile ad-hoc network (MANET). An abstract routing protocol and medium access protocol for mobile ad hoc networks Submitted for partial fulfillment of the requirements for the degree of doctor of philosophy (Electrical engineering) in January 1999. Note that in a wider context, an ad hoc protocol can also mean an improvised and often impromptu protocol established for a particular specific purpose. http://www.wikipedia.org/wiki/Ad_hoc_protocol_list   (2543 words)      Mobile Ad Hoc Network (MANET) Papers Piyush Gupta and P. Kumar " A system and traffic dependent adaptive routing algorithm for ad hoc networks", Proceedings of the 36th IEEE Conference on Decision and Control, pp. Goutham Karumanchi Srinivasan Muralidharan and Ravi Prakash " Information Dissemination in Partitionable Mobile Ad Hoc Networks", To appear in Prceedings of IEEE Symposium on Reliable Distributed Systems, Lausanne, Switzerland, 20-22, October. Raghupathy Sivakumar, Bevan Das, Vaduvur Bharghavan " Spine Routing in Ad hoc Networks, ACM/Baltzer Publications Cluster Computing Journal, Special Issue on Mobile Computing, 1998. http://www.ee.surrey.ac.uk/Personal/G.Aggelou/MANET_PUBLICATIONS.html   (1145 words)      rfc2501.txt In contrast, the goal of mobile ad hoc networking is to extend mobility into the realm of autonomous, mobile, wireless domains, where a set of nodes--which may be combined routers and hosts--themselves form the network routing infrastructure in an ad hoc fashion. Ad hoc solutions such as TTL values can Corson & Macker Informational [Page 6] RFC 2501 MANET Performance Issues January 1999 bound the problem, but a more structured and well-formed approach is generally desirable as it usually leads to better overall performance. The emerging field of mobile and nomadic computing, with its current emphasis on mobile IP operation, should gradually broaden and require highly-adaptive mobile networking technology to effectively manage multihop, ad hoc network clusters which can operate autonomously or, more than likely, be attached at some point(s) to the fixed Internet. http://www.ietf.org/rfc/rfc2501.txt   (2997 words)      Mobile Ad-hoc Networks (manet) Charter Ad Hoc On Demand Distance Vector (AODV) Routing (RFC 3561) (90356 bytes) Mobile Ad hoc Networking (MANET): Routing Protocol Performance Issues and Evaluation Considerations (RFC 2501) (28912 bytes) Agenda bashing, discussion of charter and of mobile ad hoc networking draft. http://www.ietf.org/html.charters/manet-charter.html   (506 words)      Joyner: C++?? A C++ Critique (160KB) This can be a problem because routines that aren't actually polymorphic are accessed via the slightly less efficient virtual table technique instead of a straight procedure call. Polymorphism allows one word to describe what is to be computed. But this is no reason for being careless about the languages that we develop and choose for software development. http://www.modulaware.com/mdlt28.htm   (506 words)      Reveal the magic behind subtype polymorphism Luca Cardelli and Peter Wegner, authors of "On Understanding Types, Data Abstraction, and Polymorphism," (see Resources for link to article) divide polymorphism into two major categories -- ad hoc and universal -- and four varieties: coercion, overloading, parametric, and inclusion. However, a careful examination of polymorphism demystifies the magic and reveals that polymorphic behavior is best understood in terms of type, rather than as dependent on overriding implementation inheritance. By freeing our concept of polymorphism from the implementation hierarchy, we also discover how Java interfaces facilitate polymorphic behavior across groups of objects that share no implementation code at all. http://www.javaworld.com/javaworld/jw-04-2001/jw-0413-polymorph.html   (506 words)      Understanding Ad Hoc Mode Network management becomes a headache with ad hoc networks because of the fluidity of the network topology and lack of a centralized device. Before making the decision to use ad hoc mode, you should consider the following: Because there is no distribution system with ad hoc wireless LANs, users don't have effective access to the Internet and other wired network services. http://www.wi-fiplanet.com/tutorials/article.php/1451421   (979 words)      Polymorphism This is called ad-hoc polymorphism and it is difficult to maintain, since you need to find all of the if statements that implement it and change them when changes occur to the program. The Polymorphism secondary pattern is more useful when you are modifying an existing program that uses ad-hoc polymorphism ( selection) to make decisions. Notes: This type of polymorphism is difficult or impossible to achieve if the tests need to be done on primitive values (not objects) such as int, since these values don’t have polymorphic methods. http://csis.pace.edu/~bergin/patterns/polymorphism.html   (979 words)      rfc3561.txt Abstract The Ad hoc On-Demand Distance Vector (AODV) routing protocol is intended for use by mobile nodes in an ad hoc network. However, if the mobile nodes in the ad hoc network have pre-established security associations, it is presumed that the purposes for which the security associations are created include that of authorizing the processing of AODV control messages. Therefore, no special consideration, other than what is natural because of the general protocol specifications, can be made about the applicability of IPsec authentication headers or key exchange mechanisms. http://www.ietf.org/rfc/rfc3561.txt   (10726 words)      Wireless Ad Hoc Networks Bibliography Kumar, "Architecture and algorithms in ad hoc wireless networks," ONR presentation. Feeney, "A Taxonomy for Routing Protocols in Mobile Ad Hoc Networks," Swedish Institute of Computer Science Technical Report T99/07, October 1999. Blough, et al., "Analysis of Ad Hoc Networks: A statistical analysis of the long-run node spatial distribution in mobile ad hoc networks," Proc. http://w3.antd.nist.gov/wctg/manet/manet_bibliog.html   (8521 words)      How to Make Ad-Hoc Polymorphism Less Ad Hoc - Wadler, Blott (ResearchIndex) Abstract: This paper presents type classes, a new approach to ad-hoc polymorphism. Type classes permit overloading of arithmetic operators such as multiplication, and generalise the "eqtype variables" of Standard ML. Type classes extend the Hindley/Milner polymorphic type system, and provide a new approach to issues that arise in object-oriented programming, bounded type quantification, and abstract data types. http://citeseer.ist.psu.edu/wadler88how.html   (8521 words)      The APE testbed If you are a teacher running a project about ad-hoc networking in your computer science course, then APE can be a good way for students to do experiments with ad-hoc network protocols. APE testbed is short for Ad hoc Protocol Evaluation testbed. Its intended use is for evaluation of mobile ad hoc routing protocols. http://apetestbed.sourceforge.net   (969 words)      Ad-hoc polymorphism Please See Polymorphism (computer science) For Further Information about Ad-hoc polymorphism. http://www.bambooweb.com/articles/a/d/Ad-hoc_polymorphism.html   (969 words)      Rice Monarch Project Extensions to ns-2 We are a university research group doing basic research on networking protocols and ad hoc networks. The Rice Monarch Project has made substantial extensions to the ns-2 network simulator that enable it to accurately simulate mobile nodes connected by wireless network interfaces, including the ability to simulate multi-hop wireless ad hoc networks. We created our extensions to ns-2 as they were a critically important tool to support our research, and we are making them available in case they can help others as well. http://www.monarch.cs.rice.edu/cmu-ns.html   (787 words)      Operator overloading In computer programming, operator overloading (less commonly known as ad-hoc polymorphism) is a specific case of polymorphism in which some or all of operators like Set home page · Bookmark site · Add search Operator overloading is usually only a syntactic sugar, and it can be easily emulated by function calls: http://www.sciencedaily.com/encyclopedia/operator_overloading   (787 words)

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