Management of Knowledge Sources Supported by Domain Ontologies: Building and Construction Case Studys

This paper introduces a novel conceptual framework to support the creation of knowledge representations based on enriched semantic vectors, using the classical vector space model approach extended with ontological support. This work is focused on collaborative engineering projects where knowledge plays a key role in the process. Collaboration is the arena, engineering projects are the target and knowledge is the currency used to provide harmony into the arena since it can potentially support innovation and, hence, a successful collaboration. The test bed for the assessment of the approach comes from the Building and Construction sector, which is challenged with significant problems for exchanging, sharing and integrating information among actors. Semantic gaps or lack of meaning definition at the conceptual and technical levels, for example, are problems fundamentally originated through the employment of representations to map the ‘world’ into models in an endeavour to anticipate other actors’ views, vocabulary and even motivations. One of the primary research challenges addressed in this work relates to the process of formalization and representation of document contents, where most existing approaches are limited and only take into account the explicit, word-based information in the document. The research described in this paper explores how traditional knowledge representations can be enriched through incorporation of implicit information derived from the complex relationships (semantic associations) modelled by domain ontologies with the addition of information presented in documents, by providing a baseline for facilitating knowledge interpretation and sharing between humans and machines. Preliminary results were collected using a clustering algorithm for document classification, which indicates that the proposed approach does improve the precision and recall of classifications. Future work and open issues are also discussed. Copyright © 2015 John Wiley & Sons, Ltd.     

Should special agricultural safeguard be ignored? An evaluation for dairy trade

This study measured the impact of special agricultural safeguards (SSG) on dairy products imports by the US and Japan. It was observed that dairy products have been the most affected by this protectionist measures, and that these countries are relevant importers that impose SSG. The tariff lines subject to SSG were selected, and the period of analysis was from 1995 to 2015. The results showed that the impact of SSG applied by the US was much higher than for Japan. The overall estimated value of imports that did not happen due to the application of SSGs was approximately USD 2 billion. Specifically for the Brazilian economy, the condensed milk not exported to the US due to SSG applied cost the country BRL 345 million in GDP value and almost 4.5 thousand jobs. These results might be underestimating these effects, since the SSG tariff was not subject to calculation in several years.     

The effect of physician board membership on uncompensated care provision

Previous studies indicate that nonprofit and for-profit hospitals provide comparable levels of uncompensated care, when taking into account their sizes. This evidence suggests that for-profit hospitals extract some indirect benefit when providing uncompensated care. Our article investigates how physician board membership affects uncompensated care provision. With data for hospitals in California from 1997 to 2010, we estimate a fixed-effect model where uncompensated care is a function of physician board membership, other board attributes, as well as hospital characteristics. Our results indicate that physician board membership in for-profit hospitals relates positively with uncompensated care provision. Prior evidence, such as Goldstein and Ward (2004) and Molinari et al. (1995), has shown that involving physicians in strategic decisions improves hospitals’ financial performance. Our results reinforce the notion that having physicians in leadership or strategic positions benefits for-profit hospitals. In these hospitals, physicians seem to understand the strategic component of providing uncompensated care, possibly due to their closer assessment of patients’ needs.     

Attributes Versus Benefits: The Role of Construal Levels and Appeal Type on the Persuasiveness of Marketing Messages

When should marketers emphasize attributes or benefits in their communications? Grounded in construal-level theory, the results of four studies suggest that when a purchase is planned for the distant future or when construal levels are high, benefit-based appeals are more persuasive than attribute-based appeals. By contrast, when a purchase is planned for the near future or when consumers are predisposed to low construal levels, attribute-based appeals are equally as persuasive as benefit-based appeals. However, when low construal levels are temporarily induced using a mind-set manipulation, attribute-based appeals are found to be more persuasive than benefit-based appeals. Moreover, we demonstrate how these effects occur only when processing fluency is uninhibited. This research establishes an important link between these appeal types and construal levels, subsequently demonstrating when marketers should use these appeals.     

Orthorexia Nervosa: Can Healthy Eating Food Trends Impact Food Companies Marketing Strategies?

The purpose of this article is to explore foods companies’ knowledge of food trends and assess how orthorexia nervosa may affect food companies’ marketing decisions. Data was gathered through a multiple case-study approach, and four semi-structured interviews to CEOs/CMOs of food companies from four distinct non-competing sectors of the food industry. The results show that although marketing managers are conscious of the existence of consumer behavior changes regarding food habits, they are not particularly concerned neither interested in micro-segments as they are not profitable. Despite the deficiencies on CMOs’ knowledge of particular food trends they declare to be attentive to the changes in consumer behavior and prepared to respond to competitors moves. This research adds to the existing knowledge on the food industry since it is the first study to explore the impact of food trends on food companies’ management marketing decisions from the company point of view.     

Herd Behavior in Latin American Stock Markets

ABSTRACT

This article investigates the presence of herd behavior in Latin American stock markets using the methodologies proposed by Christie and Huang (1995 Christie , W. G. , &; Huang , R. D. ( 1995 ). Following the pied piper: Do individual returns herd around the market? Financial Analysts Journal , 51 ( 4 ), 31 – 37 .[Taylor &; Francis Online] , [Google Scholar]) and Chang, Cheng, and Khorana (2000 Chang , E. C. , Cheng , J. W. , &; Khorana , A. ( 2000 ). An examination of herd behavior in equity markets: An international perspective . Journal of Banking and Finance , 24 ( 10 ), 1651 – 1679 .[Crossref], [Web of Science ®] , [Google Scholar]). Daily closing prices and trading volumes from January 3, 2000 to September 15, 2010 from the stock markets of Argentina, Brazil, Chile, Mexico, and the United States were analyzed. The US market was studied in order to provide a reference for comparison. The shares for which data was collected in each country were those listed in the most representative stock index for each market. It was not possible to establish evidence of herd behavior in any of the five countries studied using the Christie and Huang (1995 Christie , W. G. , &; Huang , R. D. ( 1995 ). Following the pied piper: Do individual returns herd around the market? Financial Analysts Journal , 51 ( 4 ), 31 – 37 .[Taylor &; Francis Online] , [Google Scholar]) method. However, evaluating the data for the entire period using the method proposed by Chang, Cheng, and Khorana (2000 Chang , E. C. , Cheng , J. W. , &; Khorana , A. ( 2000 ). An examination of herd behavior in equity markets: An international perspective . Journal of Banking and Finance , 24 ( 10 ), 1651 – 1679 .[Crossref], [Web of Science ®] , [Google Scholar]) we detected herd behavior in the Chilean market. These results were not affected by the addition of additional exogenous variables representing the September 11 attacks of 2001 and the subprime crisis, or when the effect of the behavior of US shares on other countries was analyzed. Asymmetric herd behavior was detected in the Chilean, United States, Argentinean, and Mexican markets.     

The potential of management networks in the innovation and competitiveness of rural tourism: a case study on the Valle del Jerte (Spain)

Since the 1980s, rural tourism has witnessed a significant and generalised growth among the European Union members. However, from the perspective of business management, rural tourism suffers from several obstacles that complicates its competitiveness as a tourism product. By focusing on the Valle del Jerte (Extremadura, Spain) case study, this study analyses a rural tourism business network, from the social network analysis perspective, to critically discuss its potential as a structure that enhances competitiveness and innovation. The results demonstrate that these networking structures contribute towards the creation of a cohesive destination, whereby the sharing of resources enables innovative local responses to the global market challenges.     

Development and validation of an Integrated Organizational Safety Climate Questionnaire with multilevel confirmatory factor analysis

Meta-analytic and traditional reviews on safety climate reveal theoretical and methodological safety climate issues still open. The main aim of this study is to propose a questionnaire which combines recent and different approaches to safety climate, trying to give a contribute about these issues. The present research led to the development of a new questionnaire to measure safety climate, suitable for blue-collar workers, and to the evaluation of its psychometric properties, and usefulness to measure safety climate in the industrial sector. Multilevel confirmatory factor analysis (MCFA) was used to properly evaluate the factor structure underlying the safety climate questionnaire composed of three scales: organizational safety climate scale, supervisor’s safety climate scale and co-workers’ safety climate scale. The clear distinction, made with the use of three different scales, among safety agents (organization, supervisor, co-workers), allows the assessment of workers’ perceptions focused on each level, and allows to deeply explore, for instance, lateral relationships of supervisor’s safety climate and co-workers’ safety climate, analysing the interactions between the roles of these two safety agents. A two-level design was used, considering the individual level and the work-group level. Data collection involved 1,617 blue-collars from eight Italian manufacturing companies. The MCFA results demonstrated the importance to use proper analysis to study the factor structure of a multilevel construct as safety climate, and confirmed the theoretical structure of safety climate purposed from Griffin and colleagues, using not only psychological climate (i.e., the individual level), but also the group level safety climate.     

Optimism and the perceptions of new risks

While many risks, especially new ones, are not objectively quantifiable, individuals still form perceptions of risks using incomplete or unclear evidence about the true nature of those risks. In the case of well known risks, such as smoking, individuals perceive risks to be smaller for themselves than others, exhibiting ‘optimism bias’. Although existing evidence supports optimism bias occurring in the case of risks about which individuals are familiar, evidence does not yet exist to suggest that optimism bias applies for new risks. This paper addresses this question by examining the gap in perceptions of risks individuals have for themselves versus society and the environment, conceptualised as social and/or environmental optimism biases. We draw upon the 2002 UEA‐MORI Risk Survey to examine the existence of optimism bias and its effects on risk perceptions and acceptance regarding five science and technology‐related topics: climate change, mobile phones, radioactive waste, GM food and genetic testing. Our findings provide evidence of social and environmental optimism bias following similar patterns and optimism bias appearing greater for those risks bringing sizeable benefit to individuals (e.g. mobile phone radiation) rather than those more acutely affecting society or the environment (e.g. GM food or climate change). Social optimism bias is found to reduce risk perceptions for risks that have received large amounts of media attention, namely, climate change and GM food. On the other hand, optimism bias appears to increase risk perceptions about genetic testing.     

The competitive implications of the deployment of unique resources

The ‘resource‐based’ view focuses on unique resources as the fundamental sources of competitive advantage and superior profits. We use a game‐theoretic model to analyze the impact of the deployment of unique resources on product market competition, and the impact of unique resources and sustainable competitive advantages on profits when the competitive implications of resource deployment are taken into account. We find that some of the core propositions of the resource‐based view do not necessarily hold when the impact of resource deployment on product market competition is explicitly considered. Specifically, the accumulation and deployment of unique resources does not necessarily increase the firm's profit and the difference between its profit and competitors' profits. Furthermore, achieving a sustainable competitive advantage does not necessarily lead to higher profits. Copyright © 2012 John Wiley & Sons, Ltd.