scholarly journals DEFEASIBLE REASONING IN WEB-BASED FORMS THROUGH ARGUMENTATION

Author(s):  
SERGIO ALEJANDRO GÓMEZ ◽  
CARLOS IVÁN CHESÑEVAR ◽  
GUILLERMO RICARDO SIMARI

The notion of forms as a way of organizing and presenting data has been used since the beginning of the World Wide Web. Web-based forms have evolved together with the development of new markup languages, in which it is possible to provide validation scripts as part of the form code to test whether the intended meaning of the form is correct. However, for the form designer, part of this intended meaning frequently involves other features which are not constraints by themselves, but rather attributes emerging from the form, which provide plausible conclusions in the context of incomplete and potentially inconsistent information. As the value of such attributes may change in presence of new knowledge, we call them defeasible attributes. In this paper, we propose extending traditional web-based forms to incorporate defeasible attributes as part of the knowledge that can be encoded by the form designer. The proposed extension allows the specification of scripts for reasoning about form fields using a defeasible knowledge base, expressed in terms of a Defeasible Logic Program.

Author(s):  
Sathiyamoorthi V.

It is generally observed throughout the world that in the last two decades, while the average speed of computers has almost doubled in a span of around eighteen months, the average speed of the network has doubled merely in a span of just eight months! In order to improve the performance, more and more researchers are focusing their research in the field of computers and its related technologies. Internet is one such technology that plays a major role in simplifying the information sharing and retrieval. World Wide Web (WWW) is one such service provided by the Internet. It acts as a medium for sharing of information. As a result, millions of applications run on the Internet and cause increased network traffic and put a great demand on the available network infrastructure.


2005 ◽  
Vol 2005 (4) ◽  
pp. 217-222 ◽  
Author(s):  
William Ulma ◽  
David M. Schlabach

The increased dependency on the World Wide Web by both laboratories and their customers has led LIMS developers to take advantage of thin-client web applications that provide both remote data entry and manipulation, along with remote reporting functionality. Use of an LIMS through a web browser allows a person to interact with a distant application, providing both remote administration and real-time analytical result delivery from virtually anywhere in the world. While there are many benefits of web-based LIMS applications, some concern must be given to these new methods of system architecture before justifying them as a suitable replacement for their traditional client-server systems. Developers and consumers alike must consider the security aspects of introducing a wide area network capable system into a production environment, as well as the concerns of data integrity and usability.


2000 ◽  
Vol 124 (4) ◽  
pp. 588-593 ◽  
Author(s):  
Andy N. D. Nguyen ◽  
Margaret O. Uthman ◽  
Kathy A. Johnson

Abstract Objective.—To implement an interactive program for teaching coagulation disorders on the World Wide Web. Design and Results.—The core materials in this program were derived from a personal computer software program previously designed by the authors. Three modules were developed in this program: (1) a coagulation profile to display typical results of coagulation screening tests for each disorder; (2) a differential diagnosis module to generate a list of diagnoses that fit the test results in a given case; and (3) a synopsis of coagulopathy and therapy to provide essential information on disorders and therapeutic options. A total of 41 coagulation disorders were included in the knowledge base. Conclusions.—Since the World Wide Web is increasingly more accessible to computer users, it has become an ideal medium for teaching purposes. Our experience with this program in teaching medical students and pathology residents at our institution has been very encouraging.


Author(s):  
Kent L. Norman ◽  
Timothy Pleskac

Conditional branching is used to direct respondents to skip inappropriate questions or to answer follow-up questions. When surveys are implemented on the World Wide Web, branching can be automated in different ways. Three implementations of conditional branching in Web-based surveys were compared: (a) a manual form which replicated the paper-and-pencil version in a scrollable window, (b) a semi-automatic form which also showed the whole survey but auto-scrolled to the next question, and (c) an automatic form that displayed only one item per screen and implemented all branching. The surveys used involved one, two, or three follow-up questions. The automatic item-by-item implementation proved significantly faster than either the manual or the auto-scrolling versions. Respondents found the auto-scrolling to be disorienting. These results suggest that automatic branching should be used but with graceful jumps that guide the respondents' focus of attention without loosing it.


1999 ◽  
Vol 4 (3) ◽  
pp. 63-81 ◽  
Author(s):  
Peter Chen ◽  
S.M. Hinton

This paper outlines the adaptation of in-depth interviewing using World Wide Web-based interviewing software between the interviewer and their subject. Through a structured, realtime interviewing process the researcher is able to use the Internet to facilitate communication, recording interviews directly to a file without incurring the costs associated with traditional face-to-face or telephone interviews. The benefits of this approach are the ability of the researcher to conduct inexpensive interviewing over distances and elimination of transcription costs from the research process, allowing the researcher to undertake a wider range of interviews than may be possible on a limited budget. The interview method has problems associated with the depth of material available from this approach, the loss of paralinguistic cues and the limited size of the available sample, limitations that must be accounted for by any researcher considering using the approach.


2009 ◽  
Vol 1 (4) ◽  
pp. 58-69 ◽  
Author(s):  
Chad M.S. Steel

While the supply of child pornography through the World Wide Web has been frequently speculated upon, the demand has not adequately been explored. Quantification and qualification of the demand provides forensic examiners a behavioral basis for determining the sophistication of individual seeking child pornography. Additionally, the research assists an examiner in searching for and presenting the evidence of child pornography browsing. The overall search engine demand for child pornography is bounded as being between .19 and .49%, depending on the inclusion of ambiguous phrases, with the top search for child pornography being “lolita bbs”. Unlike peer-to-peer networks, however, the top child pornography related query ranks only as the 198th most popular query overall. The queries on search engines appear to be decreasing as well, and the techniques employed are becoming less reliant direct links to content.


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