外文翻譯--基于網(wǎng)絡(luò)的應(yīng)用程序質(zhì)量研究和一種質(zhì)量模型概念（英文）

1、ORIGINAL ARTICLEWeb-Based Applications quality factors: A survey and a proposed conceptual modelDoaa Nabil *, Abeer Mosad, Hesham A. HefnyInformation Systems Department, Institute of Statistical Studies revised 25 Septe

2、mber 2011; accepted 27 September 2011 Available online 3 November 2011KEYWORDSWeb Based Applications; Quality; Quality assurance; Quality modelsAbstract Web-Based Applications (WBA) are fast becoming more widespread, lar

3、ger, more interac- tive, and more essential to the international use of computers. The most successful WBA companies are beginning to realize that key critical factors of success or failure of any WBA must be highly depe

4、ndable on delivering on a high quality web site. To attain the desired quality of WBA, it is nec- essary to suggest a model that organizes and enables the identification of WBA quality perspectives. This paper addresses

5、WBA quality model and categorizes its quality factors. The software is an essen- tial part of any WBA. ISO9126 standard for software engineering product quality states that the main purpose of software quality evaluation

6、 is to provide quantitative reference for software products eval- uation that is reliable, understandable, and acceptable. The main weakness point here is the lack of a formal specification of key factors for WBA quality

7、. Traditional quality models are not adequate for WBA because they do not address all problems associated with the new features of WBA. Therefore, ISO9126 and different quality models of software were investigated and pa

8、rtially used as an initial step to identify a conceptual quality model for WBA. WBA have common characteristics with traditional software packages, and other distinct characteristics that are particular to WBA. In this p

9、aper a proposed conceptual quality model to organize WBA quality factors in terms of its sub factors was* Corresponding author. E-mail addresses: Dr_doaanabil@hotmail.coms (D. Nabil), hehefny@ ieee.org (H.A. Hefny).1110-

10、8665 ? 2011 Faculty of Computers and Information, Cairo University. Production and hosting by Elsevier B.V. All rights reserved.Peer review under responsibility of Faculty of Computers and Information, Cairo University.

11、doi:10.1016/j.eij.2011.09.003Production and hosting by ElsevierEgyptian Informatics Journal (2011) 12, 211–217Cairo UniversityEgyptian Informatics Journalwww.elsevier.com/locate/eijwww.sciencedirect.comapplications. WBA

12、are complex, ever evolving and rapidly up- dated software systems. Since 1994, many WBA quality mod- els had appeared aiming to assess WBA quality characteristics that are described below: Further quality factors and att

13、ributes were researched to ensure having a comprehensive list of quality factors. In partic- ular, scalability and availability were added as, according to Suh et al. [7], E-commerce website software is large and com- pl

14、ex, but quality requirements demand the key performance of factors such as availability, performance, scalability, and secu- rity. This, in essence, provides the biggest influence on the effective implementation of any W

15、BA. In 2002, Albuquerque and Belchior [8] have organized a comprehensive set of software quality attributes into objectives where each objective is composed of a set of quality factors. Each quality factor is further dec

16、omposed into sub-factors. According to Albuquerque and Belchior, three broad objec- tives formulate which enables the evaluation of an E-com- merce WBA quality. During 2002, Eppler and Muenzenmayer [9–13] propose WAB con

17、tent quality model. Content quality is a very impor- tant concern that must be taken into consideration when talk- ing about the quality factors of WBA. Content quality is commonly thought of as a multi-dimensional conce

18、pt with varying characteristics and attributes. Eppler’s model divided quality of WBA into two quality perspective: content quality and media quality. Content quality breakdown into two cate- gories (relevant information

19、 and sound information). Each category consists of dimensions. These mentioned content quality model framework varied in their approach and applica- tion. However, they share a number of characteristics. In 2000, Fitzpat

20、rick presented WBA quality model consid- ering five quality characteristics related to the WWW domain, their sub characteristics (sub-factors), and a checklist which can be used by all IS professionals as essential issue

21、s to be ad- dressed when creating quality web applications. These charac- teristics are visibility, intelligibility, credibility, engaging the visitor, and differentiation. Visibility refers to the ease with which a user

22、 can visit web sites. Intelligibility refers to the ease with which a user can assimilate and interpret web content. Credibility refers to the level of user confidence with the con- tent of the web site. Engaging the vis

23、itor refers to the extent to which a user achieve a complete experience. And differenti- ation refers to the extent to which a web site demonstrates corporate superiority [12].Early in 2000, Luisa and Mariangela proposed

24、 an original model for evaluating and designing the quality of WBA. The model, called 2QCV3Q, has been developed using classic rhe- torical principles and can be used to single out elements which, when suitably combined,

25、 permit evaluation of the quality of WBA and provide suggestions for improvements. Symmetri- cally, the model provides guidelines for the design of WBA and allows identification and classification of the owners’ and user

26、s’ requirements. The first step in the application of the model is its customization in order to take account of the goals of WBA’s owner and the needs of users [13]. Early also in 1998, Lu and Hong introduced WAB Intera

27、c- tivity quality model that is focused on the importance of inter- activity factor in WBA environment that can meet visitors’ satisfaction. Adding interactivity features is crucial to improve the communication quality,

28、engage users, improve user satis- faction and hence make the application more acceptable and more usable. Ha and James’ Interactivity model present five WAB quality dimensions. These dimensions are playfulness, choice, c

29、onnectedness, information collection and reciprocal communication. These dimensions require two-way communi- cation [12,14,15]. Several WBA quality factors have recently been proposed in the literature. However, most of

30、them are built upon the previously WBA quality models and devoted for empirically validating.3. Proposed WBA model developmentWeb Base Applications (WBA) represents one of the fastest growing trends of the software marke

31、t that provide a new method to deploy software applications. WBA are built with a number of different, new languages, technologies, and pro- gramming model, and are used to implement highly interactive applications that

32、have very high quality requirements. WBA lends itself to software applications. On the other hand, it has its distinct features and problems that associated with the new features of WBA. This led to traditional software

33、quality models are not adequate for all features of WBA. The proposed conceptual quality model for WBA has been developed based on ISO/IEC9126 (2001) for software quality model [4,6].3.1. Structure of WBA quality model (

34、WBAQM)Dromey’s generic quality framework [16] provides a methodol- ogy for the development of quality model in a bottom–up fash- ion. It relied on the decomposition of high level quality attributes into tangible, quality

35、-carrying properties of software product components. There are three main principal elements to Dromey’s generic quality model: product property that influence quality, a set of high level quality attributes, and a mean

36、of linking them. The proposed WBA Quality Model (WBAQM) applies the same bottom up mechanism and focuses on defining different WBA quality factors and WBA quality sub factors based on ISO 9126 quality frameworks. Then it

37、 attempts to link these quality factors and sub factors together. Fig. 1 shows the levels that constitute this model [5]:Layer 1: identifying WBA quality views and usagesTable 1 Six quality characteristics of ISO9126.Fun

38、ctionality Shows the existence of a set of functions and their specified properties. The functions satisfy stated or implied needs Reliability That capability of software which maintains its level of performance under gi

39、ven conditions for a given period of time Usability Attributes that determine the effort needed for use and the assessment of such use by a set of users Efficiency The relationship between the level of performance of the

40、 software and the amount of resources used under stated conditions Maintainability The effort needed to make specified modifications Portability The ability of the software to be transformed from one environment to anoth