Journal of Web Engineering 

About: Journal of Web Engineering is an academic journal published by River Publishers. The journal publishes majorly in the area(s): Computer science & Web modeling. It has an ISSN identifier of 1540-9589. Over the lifetime, 915 publications have been published receiving 6710 citations.

Aerodynamic Characteristics of Train/Vehicles under Cross Winds

Abstract: The aerodynamic characteristics of train/vehicles under cross winds depend on not only the shapes of the vehicles but also those of infrastructures. Accordingly three kinds of wind tunnel tests were made to evaluate the aerodynamic characteristics of typical configurations of the vehicles on typical configurations of infrastructures such as bridges and embankments. The main results obtained from the wind tunnel tests are summarized below. 1. The aerodynamic side force coefficient of the vehicle increases more as the thickness of the bridge girder becomes larger. It also increases more as the roof of the vehicle becomes edgier. 2. The aerodynamic characteristics of the vehicle on the embankment depend on the distribution of the boundary layer on the ground. The aerodynamic side force coefficient of the vehicle on a high embankment is larger than that on a low embankment.

Requirements engineering for web applications: a comparative study

Abstract: The requirements engineering discipline has become more and more important in the last years. Tasks such as the requirements elicitation, the specification of requirements or the requirements validation are essential to assure the quality of the resulting software. The development of Web systems usually involves more heterogeneous stakeholders than the construction of traditional software. In addition, Web systems have additional requirements for the navigational and multimedia aspects as well as for the usability as no training is possible. Therefore a thoroughly requirements analysis is even more relevant. In contrast, most of the methodologies that have been proposed for the development of Web applications focus on the design paying less attention to the requirements engineering. This paper is a comparative study of the requirements handling in Web methodologies showing trends in the use of techniques for capturing, specifying and validating Web requirements.

Engineering semantic web information systems in Hera

Abstract: The success of the World Wide Web has caused the concepts of information system to change. Web Information Systems (WIS) use from the Web its paradigm and technologies in order to retrieve information from sources on the Web, and to present the information in terms of a Web or hypermedia presentation. Hera is a methodology that supports the design and engineering of WIS. It is a model-driven methodology that distinguishes three parts in the design: integration, data retrieval, and presentation generation. The integration part manages the gathering of data from different sources on the basis of source ontologies and mappings between those source ontologies and the conceptual model of the WIS. The data retrieval part handles the user queries and produces the data that represents the query result. In the presentation generation part this query result is trasformed into a Web presentation and that presentation is constructed to suit the user (platform), e.g. HTML, WML, or SMIL. In this paper we address the Hera design methodology and specifically explain two models: the integration model that covers the different aspects of integration, and the adaptation model that specifies how the generated presentations can be adaptable (e.g. based on device capabilities, user preferences) and adaptive (e.g. based on user browsing history). This detailed description includes an explanation of how the Hera software is constructed. This software provides a set of trasformations that allow a WIS to go from integration to presentation generation. These transformations are based on RDF(S), the foundation of the Semantic Web. We show how RDF(S) has proven its value in combining all relevant aspects of WIS design, thus illustrating how Hera allows the engineering of Semantic Web Information Systems (SWIS).

Recommendations of the COST action C14 on the use of CFD in predicting pedestrian wind environment

Abstract: Recommendations on the proper use of CFD for the prediction of pedestrian winds are presented. They are restricted to statistically steady turbulent flows modelled by the RANS equations and based on a comprehensive literature review. Furthermore, only aspects of the boundary conditions and the numerical parameters which influence the accuracy of the solutions are addressed.

Transient Loads on Buildings in Microburst and Tornado Winds

Abstract: This paper presents both quasi-steady and transient wind load effects on a cubic building in a microburst and a tornado. Large eddy simulation (LES) was used to simulate the loading effects of a translating microburst with a 0.20-m-diameter jet at four different translating velocities on a 25 mm cube. The results of the numerical simulation were compared with data from a laboratory microburst simulator. The numerical simulation predicted an increase in drag forces with increase in microburst translation speed. The transient loading effects on a 229 mm cubic building from a translating tornado were also simulated in a laboratory for two different vortex core diameters and two translating speeds and the peak loads were studied. Results for the cubic building were compared with that of a tall building under the same loading conditions. Finally, peak loads and peak moments measured in this study were compared to the corresponding values specified in ASCE 7-05 [2006. Minimum Design Loads for Buildings and Other Structures, 2006. ASCE Standard, SEI/ASCE 7-05, American Society of Civil Engineers] and found to exceed them by a factor of 1.5 or more for buildings located in tornado alley of the United States subjected to tornadoes of F2 or higher intensity.