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dc.creatorGonzalez Barron, Raul
dc.date.accessioned2012-06-07T22:48:48Z
dc.date.available2012-06-07T22:48:48Z
dc.date.created1997
dc.date.issued1997
dc.identifier.urihttp://hdl.handle.net/1969.1/ETD-TAMU-1997-THESIS-G66
dc.descriptionDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item.en
dc.descriptionIncludes bibliographical references: p. 55-58.en
dc.descriptionIssued also on microfiche from Lange Micrographics.en
dc.description.abstractUsing the current network infrastructure and the Internet capabilities, a WWW-based in-class-response system is developed from which the instructor can obtain instant feedback about the student's comprehension level during lecture. Using a Web browser in class as a form of instructor-student interaction, students can improve communication, shorten response time to questions and increase overall learning. Immediate access to the students' response to questions posted in-class will give the instructor a chance to initiate early corrective action and enhance overall teaching performance. One of the concerns resulting from the use of such a system in an in-class setting, however, arises due to the potential problem of server overload. With a classroom size of 50 to 100 students working within the same one to two minute window, there may be Web server performance problems caused by the large number of submissions within such a short time. Observing the unsatisfactory performance of the Web Server during the initial stages of this research, led to the implementation to the proposed solution to overcome this problem. Implementation of the FastCGI interface on the Web Server is used to minimize response time. A comparison between CGI and FastCGI shows the performance improvement which stems from having a configurable number of processes running on the Web Server to serve the concurrent requests. A uniformly distributed scenario for an in-class response setting (e.g., having 100 students accessing the server in a 30 seconds window), would require a service rate from the server of browser's results, having a response time of between 12 and 17 seconds per connection using a fraction of the expected load, leads to the conclusion that the original testbed based on a SPARC I will not be able to sustain the expected load for an in-class setting. A much lower response time and a higher throughput was obtained after installing the CGI programs on a Ultra Sparc 2. The benchmark tests using 84 Webclients showed a throughput of 17 and 194 connections per second using the CGI and FastCGI access method, respectively. The Web browser tests showed an average response time of less than one second per connection using a higher load than the expected 100 requests in a 30 second window. These results leads us to conclude that the Web Server based on the Ultra Sparc 2 will be able to handle the expected in-class load, at the much higher expense of the latter machine.en
dc.format.mediumelectronicen
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherTexas A&M University
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.subjectelectrical engineering.en
dc.subjectMajor electrical engineering.en
dc.titleA WWW-based in-class response systemen
dc.typeThesisen
thesis.degree.disciplineelectrical engineeringen
thesis.degree.nameM.S.en
thesis.degree.levelMastersen
dc.type.genrethesisen
dc.type.materialtexten
dc.format.digitalOriginreformatted digitalen


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