The paper is a contribution to the problem of semantics-preserving schema restructuring. First, the notion of schema transformation is precisely analysed, its properties of reversibility are stated and an adequate notation is proposed. Then, the paper develops a general family of entity-generating transformations, i.e. operations that add/remove entity types in a schema. This generic transforma...

In this paper we study the effects of a change in an exogenous variable (the fixed cost or a parameter in the demand function) on the output and the number of active firms in a Symmetric Cournot Equilibrium with Free Entry (SCEFE). The results obtained here are different from those obtained in the Cournot model with a given number of firms. In particular, an increase in demand might yield a dec...

The purpose of this paper is to evaluate whether Relationship Marketing (RM) creates competitive advantage and retains customers for businesses. In order to evaluate RM practices in Grameen Phone (GP), two hundred and sixty five respondents were surveyed. Findings show that GP has been applying RM successfully, consequently retaining customers and achieving competitive advantage. However, GP sh...

Wellness and spa tourism has recently become a marketing strategy to attract tourists. It plays an important role in hotel industry, resorts and tourist destinations. Wellness and spa services are being required by local and international tourists. The interrelationship among motivations, satisfaction, and revisit intentions remain largely unexplored. Therefore, the purpose of the study was to ...

Background Quantitative Structure Activity Relationship (QSAR) is a difficult computational chemistry approach for beginner scientists and a time consuming one for even more experienced researchers. Method and Materials Ezqsar which is introduced here addresses both the issues. It considers important steps to have a reliable QSAR model. Besides calculation of descriptors using CDK library, hi...

This paper describes first results using the Unified Medical Language System (UMLS) for distantly supervised relation extraction. UMLS is a large knowledge base which contains information about millions of medical concepts and relations between them. Our approach is evaluated using existing relation extraction data sets that contain relations that are similar to some of those in UMLS.

Customer satisfaction represents a modern approach for quality in enterprises and organisations and serves the development of a truly customer-focused management and culture. Measuring customer satisfaction offers an immediate, meaningful and objective feedback about clients’ preferences and expectations. In this way, company’s performance may be evaluated in relation to a set of satisfaction d...

Experiences with the management of Grid specific monitoring and accounting data have shown that current approaches do not sufficiently support a distinction between providers, users and customers of a Grid. This gap can be filled by the use of Customer Service Management techniques which enable customers to individually monitor and control their subscribed services. We adapt a Customer Service ...

The Lonely Runner Conjecture, posed independently by Wills and by Cusick, states that for any set of runners running along the unit circle with constant different speeds and starting at the same point, there is a time where all of them are far enough from the origin. We study the correlation among the time that runners spend close to the origin. By means of these correlations, we improve a resu...

Nowadays, many companies collect Voice of the Customer (VOC) in order to understand more about customers and the way they think about the companies or products/services. Many collection methods are being used to capture those valuable resources. This paper introduces “VOC 3.0”, a new Voice of the Customer (VOC) collection method through customer co-creation. This new method is aiming to create ...