Browsing by Subject "Web"
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Item Effective science communication to children via a health-related Web site(Texas A&M University, 2004-09-30) Gore, Sabra LaddThis study assesses one Web site, Veggie-mon.org. This Web site aims to effectively communciate health information to children, resulting in user learning and an intent to change health behavior. Fourth- through eighth-grade pupils were interviewed before and after perusing the Web site for up to 20 minutes, and then they participated in focus groups. A majority of participants learned what the Web site was about, had previous health knowledge reinforced, discovered new health information, and said it made a difference in their health choices. Readability tests performed on seven text passages on the site indicated seventh- and eighth-grade reading levels, which is too high for the majority of the targeted audience.Item A framework for spatio-temporal querying amongst mobile devices(2012-05) Cochran, Benjamin Mark, 1982-; Julien, Christine; Bard, WilliamWith mobile web browsers holding around eight percent of the global browser market share in terms of usage, web development for these platforms is becoming critically important as usage moves from the desktop towards mobile devices. Recent advances in client side browser technology like HTML5 and WebSockets have allowed web browser applications to approach feature parity with thick client desktop applications. This paper explores the possibility of a real-time online multiplayer game playable from just a mobile device's web browser. It does not focus on gameplay or graphics, rather it focuses on the backend infrastructure needed to support such a game. The framework devised to support this sort of interaction, Marionette, is well suited towards addressing sharing of location-specific, short-lived information between people using their smartphones without the use of any external software or proprietary software packages on the client side.Item Nielsen versus Nielsen: A usability analysis of television homepages(2006-08) McDermand, Amanda; Youngblood, Norman E.; Callison, Coy; Gallagher, Amanda H.Several studies explore the design and usability of homepages, but none have investigated both in the context of local television Web sites. A content analysis of 173 local and eight national television homepages stratified by Designated Market Area (DMA) rank and station rating within a DMA provide insight into how these homepages follow recommended usability guidelines proposed by Jakob Nielsen. Additionally, this research seeks to discover major design trends found on local television homepages based on a high or low DMA rank. This study revealed through a correlation analysis that DMA rank does not correlate with usability score; however, station rating within a DMA and usability score are correlated. Furthermore, DMA rank and station rating within a DMA are correlated with homepage traffic and the number of interactivity features found on a homepage. These findings suggest usability standards may need revisions based on the rapid growth and adoption of the Web.Item Nielsen versus Nielsen: a usability analysis of television homepages(Texas Tech University, 2006-08) McDermand, Amanda; Youngblood, Norman E.; Gallagher, Amanda H.; Callison, CoySeveral studies explore the design and usability of homepages, but none have investigated both in the context of local television Web sites. A content analysis of 173 local and eight national television homepages stratified by Designated Market Area (DMA) rank and station rating within a DMA provide insight into how these homepages follow recommended usability guidelines proposed by Jakob Nielsen. Additionally, this research seeks to discover major design trends found on local television homepages based on a high or low DMA rank. This study revealed through a correlation analysis that DMA rank does not correlate with usability score; however, station rating within a DMA and usability score are correlated. Furthermore, DMA rank and station rating within a DMA are correlated with homepage traffic and the number of interactivity features found on a homepage. These findings suggest usability standards may need revisions based on the rapid growth and adoption of the Web.Item The impact of a web-based science lesson designed and delivered to integrate multiple learning styles, on achievement scores of seventh grade students(Texas Tech University, 2005-08) Martin, Laura Jane; Maushak, Nancy; Olivarez, Arturo; Price, RobertThe use of computer technology continues to gain popularity in the K-12 classrooms. In many schools, teachers are required to provide students with a curriculum that includes the integration of computers. This integration serves two purposes: to add to the learning process and to teach students the necessary computer skills required for their future educational goals and careers. More research needs to be conducted to discover how computer technology can be used as an effective tool for targeting individual student needs and for fostering higher order thinking skills, critical thinking skills, and problem solving skills. The purpose of this study was to examine the effects of two different web-based instructional lesson designs, a traditional text-based web lesson and a multiple learning styles web lesson, on students' achievement. The treatment incorporated multiple learning style elements, from the Dunn and Dunn Learning Styles Model, into the web lesson design. The control was designed using a mostly text-based, linear, static, lesson. Achievement differences were compared for each level of treatment, gender, and class level variables. A three-way analysis of variance (ANOVA) was conducted to measure the research hypotheses. The study included three independent variables; treatment, gender, and class level. The dependent variable, science achievement scores, was measured as the difference between pretest and posttest scores. The study was one-tailed with an alpha level of .05. The results of this study showed significance on science achievement scores on class level for the pre-advanced placement students. No significance was found for the other hypotheses. The results from this study suggest that the incorporation of learning styles, into a web-based lesson, is not a useful avenue to pursue for web development. A survey was also used to evaluate students' opinions about using the web lesson. The survey showed that most students preferred learning with computers and also preferred computer lessons that incorporated a game format.Item Toward better server-side Web security(2014-05) Son, Sooel; Shmatikov, Vitaly; McKinley, Kathryn S.Server-side Web applications are constantly exposed to new threats as new technologies emerge. For instance, forced browsing attacks exploit incomplete access-control enforcement to perform security-sensitive operations (such as database writes without proper permission) by invoking unintended program entry points. SQL command injection attacks (SQLCIA) have evolved into NoSQL command injection attacks targeting the increasingly popular NoSQL databases. They may expose internal data, bypass authentication or violate security and privacy properties. Preventing such Web attacks demands defensive programming techniques that require repetitive and error-prone manual coding and auditing. This dissertation presents three methods for improving the security of server-side Web applications against forced browsing and SQL/NoSQL command injection attacks. The first method finds incomplete access-control enforcement. It statically identifies access-control logic that mediates security-sensitive operations and finds missing access-control checks without an a priori specification of an access-control policy. Second, we design, implement and evaluate a static analysis and program transformation tool that finds access-control errors of omission and produces candidate repairs. Our third method dynamically identifies SQL/NoSQL command injection attacks. It computes shadow values for tracking user-injected values and then parses a shadow value along with the original database query in tandem with its shadow value to identify whether user-injected parts serve as code. Remediating Web vulnerabilities and blocking Web attacks are essential for improving Web application security. Automated security tools help developers remediate Web vulnerabilities and block Web attacks while minimizing error-prone human factors. This dissertation describes automated tools implementing the proposed ideas and explores their applications to real-world server-side Web applications. Automated security tools are effective for identifying server-side Web application security holes and a promising direction toward better server-side Web security.