物件導向軟體之架構(Object-Oriented Software Construction)探討

Phenolics in cereals, fruits and vegetables: Occurrence, extraction and analysis

Relationship marketing is the development and outbreak of the combined theory of the traditional marketing,and it is a new idea.It puts more emphasis on the long-term and satisfying relation between enterprises and customers.and its success relies on some conditions.Its application in China has its own characteristics.

On relationship marketing

Please provide a short abstract of 100 to 250 words. The abstract should not contain any undefined abbreviations or unspecified references. Work planned but not completed should not appear in the abstract.

User Modeling and User-Adapted Interaction

Context: In recent years, many usability evaluation methods (UEMs) have been employed to evaluate Web applications. However, many of these applications still do not meet most customers' usability expectations and many companies have folded as a result of not considering Web usability issues. No studies currently exist with regard to either the use of usability evaluation methods for the Web or the benefits they bring. Objective: The objective of this paper is to summarize the current knowledge that is available as regards the usability evaluation methods (UEMs) that have been employed to evaluate Web applications over the last 14years. Method: A systematic mapping study was performed to assess the UEMs that have been used by researchers to evaluate Web applications and their relation to the Web development process. Systematic mapping studies are useful for categorizing and summarizing the existing information concerning a research question in an unbiased manner. Results: The results show that around 39% of the papers reviewed reported the use of evaluation methods that had been specifically crafted for the Web. The results also show that the type of method most widely used was that of User Testing. The results identify several research gaps, such as the fact that around 90% of the studies applied evaluations during the implementation phase of the Web application development, which is the most costly phase in which to perform changes. A list of the UEMs that were found is also provided in order to guide novice usability practitioners. Conclusions: From an initial set of 2703 papers, a total of 206 research papers were selected for the mapping study. The results obtained allowed us to reach conclusions concerning the state-of-the-art of UEMs for evaluating Web applications. This allowed us to identify several research gaps, which subsequently provided us with a framework in which new research activities can be more appropriately positioned, and from which useful information for novice usability practitioners can be extracted.

Usability evaluation methods for the web: A systematic mapping study

Empirical findings on team size and productivity in software development

“Reusable learning objects” oriented towards increasing their potential reusability are required to satisfy concerns about their granularity and their independence of concrete contexts of use. Such requirements also entail that the definition of learning object “usability,” and the techniques required to carry out their “usability evaluation” must be substantially different from those commonly used to characterize and evaluate the usability of conventional educational applications. In this article, a specific characterization of the concept of learning object usability is discussed, which places emphasis on “reusability,” the key property of learning objects residing in repositories. The concept of learning object reusability is described as the possibility and adequacy for the object to be usable in prospective educational settings, so that usability and reusability are considered two interrelated – and in many cases conflicting – properties of learning objects. Following the proposed characterization of two characteristics or properties of learning objects, a method to evaluate usability of specific learning objects will be presented.
 Key Terms: Learning objects, reusability, usability evaluation, learning technology standards

/pdf/on-the-concepts-of-usability-and-reusability-of-learning-9xkhgsrdzy.pdf

On the Concepts of Usability and Reusability of Learning Objects

Completeness of e-learning objects metadata records becomes a key requirement for learning object repositories, since these repositories are called to play a central role in automated approaches to e-learning. Nonetheless, metadata creation is a time-consuming and laborious process. These two factors may eventually result in incomplete and poorly structured metadata. In this paper, the completeness of learning object metadata of samples obtained from the MERLOT and CAREO repositories is analysed from that viewpoint, using the IEEE LOM standard as a reference framework. The paper concludes with a proposal for the specification of completeness levels as compliancy requirements for learning-related services or processes.

/pdf/complete-metadata-records-in-learning-object-repositories-ql6mbevirt.pdf

Complete metadata records in learning object repositories: some evidence and requirements

The Software & Systems Process Engineering meta-model (SPEM) allows the modelling of software processes using OMG (Object Management Group) standards such as the MOF (Meta-Object Facility) and UML (Unified Modelling Language) making it possible to represent software processes using tools compliant with UML. Process definition encompasses both the static and dynamic structure of roles, tasks and work products together with imposed constraints on those elements. However, the latter requires support for constraint enforcement that is not always directly available in SPEM. Such constraint-checking behaviour could be used to detect possible mismatches between process definitions and the actual processes being carried out in the course of a project. This paper approaches the modelling of such constraints using the SWRL (Semantic Web Rule Language), which is a W3C recommendation. To do so, we need to first represent generic processes modelled with SPEM using an underlying ontology based on the OWL (Ontology Web Language) representation together with data derived from actual projects.

Defining software process model constraints with rules using owl and swrl

Hypermedia links describe purposeful relationships between contents, and in consequence, their semantic intention can be modelled by the notion of link type. Ontologies can be used to extend that notion of link type, eventually resulting in shared conceptualisations useful in achieving consistent linking practices. In addition, the relationship embodied by the link is in many cases inherently imprecise, which has been overlooked in existing systems. In this work, we describe how ontologies of link types with support for expressing imprecision can be used to enhance educational web contents. The computational semantics of the ontology, combined with fuzziness to specify graded relations between pairs of link sources and targets for specific users or groups, enable the implementation of extended adaptive behaviours that may entail inferences and approximate reasoning. An implementation, based on an SCORM-compliant runtime environment, of such kind of extended links is also described, demonstrating their capabilities in the definition of learning-oriented adaptations.

Elena García

Papers

Empirical findings on team size and productivity in software development

On the Concepts of Usability and Reusability of Learning Objects

Complete metadata records in learning object repositories: some evidence and requirements

Defining software process model constraints with rules using owl and swrl

Using links to describe imprecise relationships in educational contents