The success of Web applications is constrained by two key features: fast evolution and usability. Current Web engineering approaches follow a "unified" development style which tends to be unsuitable for applications that need to evolve fast. Moreover, according to the quality standard ISO 9126-1, usability is a key factor to obtain quality systems. In this paper, we show how to address usabilit...

Resumen El uso de modelos de calidad durante la selección de componentes COTS (Comercial, Off-The-Shelf components) proporciona un entorno adecuado para la descripción de los dominios a los que pertenecen dichos componentes. La selección en este caso resulta más eficiente y fiable, pues tanto las descripciones de los componentes COTS como las de los requisitos de calidad de los usuarios pueden ...

Earlier software systems used to be very small in size and were developed and maintained by only few IT experts, but era changed and the requirements of user’s started increasing day by day. Due to heterogeneous and dynamic behaviour of current software systems their structure is becoming complex which leads to rapid rise in their cost and complexity, now more IT professionals are required to d...

One of the steps to evaluate quality is to define first quality requirements, for instance, by means of models. In order to specify quality models for Web 2.0 applications we propose an integrated approach which considers quality dimensions for contents and functionalities. In particular, we discuss how to model the different quality views reusing and extending the ISO 9126-1 quality models tak...

Context: Quality of Service (QoS) is a major issue in various web service related activities. Quality models have been proposed as the engineering artefact to provide a common framework of understanding for QoS, by defining the quality factors that apply to web service usage. Objective: The goal of this study is to evaluate the current state of the art of the proposed quality models for web ser...

Mobile learning offers several advantages over other forms of learning like ubiquity and idle time utilization. However for these advantages to be properly addressed there should be a check on the system quality. Poor quality systems will invalidate these benefits. Quality estimation in M-learning systems can be broadly classified into two categories: software system quality and learning charac...

This paper deals with a quality model for mobile web applications. The paper describes typical challenges in the development of mobile web application and decomposes the challenges into the quality of the ISO 9126 quality standard. This leads to an adjusted ISO model that focuses on those quality features that are important in order to assure the quality of mobile web applications. The proposed...

where p and q are polynomials. We consider skew products which are Axiom A and extend holomorphically to endomorphisms of P2 of degree d ≥ 2. In the article [DH], we studied orbits of critical points in a distinguished subset of C2, and we constructed new examples of Axiom A maps. We made an erroneous assumption about polynomial skew products, which holds for our main examples but fails in gene...

In this work we propose a methodology named QUEM (Quantitative Usability Evaluation Model) for quantitative usability evaluation of e-commerce websites. Many e-commerce websites lack user friendliness. The main factor that prevents these firms to conduct usability testing is the high costs and the need for usability experts. In this work, ISO/IEC 9126-1:2001 quality model was selected as a basi...

Kiyoshi Kogure’ Norihiro Hagital Yasuyulu SumiZ2 Non& Kuwahara’ Hiroshi Ishiguro’. 1 ATR Intelligent Robotics and Communication Laboratories 2 ATR Media Science Laboratories 3 Kyoto University 2-2-2 Hikaridai, Keihanna Science City 619-0288 Japan 2-2-2 Hikaridai, Keibanna Science City 619-0288 Japan Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501 Japan 2-1 Yamadaoka, Suita, Osaka 565-0871 Japan 4 Os...