862 resultados para Management Sciences.
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While leadership is indisputably one of the most pervasive topics in our society, the vast majority of existing research has focused on leadership as a positive force. Taking a follower- centric approach to the study of leadership, we integrate research on the Romance of Leadership and the dark side of leadership by examining followers’ perceptions of aversive leadership in the context of public high schools. Although Meindl, Ehrlich, and Dukerich (1985) demonstrated that the Romance of Leadership also includes the overattribution of negative outcomes to leaders, subsequent research has failed to explore the implications of this potentially darker side of romanticizing leaders. Specifically, we examine perceptions of principals’ aversive leadership and traditional affective, behavioral, and performance outcomes of followers in a sample of 342 dyads. Followers assessed their principals’ leadership behaviors and self-rated their levels of job satisfaction, self-efficacy, and resistance, while principals assessed their followers’ citizenship behaviors, complaining behaviors, and job performance. Results show that perceptions of aversive leadership are positively related to follower resistance and negatively related to followers’ job satisfaction. In addition, a usefulness analysis revealed that follower-rated variables were significantly related to perceptions of aversive leadership above and beyond leader-rated variables, suggesting that the relationship between negative outcomes and aversive leadership may be more constructed than real. In sum, the tendency to romanticize leadership may also lead to a proclivity to readily misattribute or overattribute blame to leadership as a convenient scapegoat for negative outcomes. Alors que le leadership est incontestablement l’un des thèmes les plus envahissants de notre société, la grande majorité des recherches existantes a porté sur le leadership en tant que force positive. En adoptant une approche centrée sur le suiveur dans l’étude du leadership, nous examinant la perception qu’ont les collaborateurs du leadership insupportable dans le contexte des lycées publics. Quoique Meindl, Ehrlich, et Dukerich (1985) aient montré que la Romance du Leadership inclut aussi la surattribution de résultats négatifs aux leaders, les recherches ultérieures ont méconnu les implications de cet aspect potentiellement plus sombre des leaders idylliques. Nous analysons en particulier sur un échantillon de 342 dyades la perception du leadership répulsif du proviseur et les résultats habituels des collaborateurs en rapport avec l’affectivité, le comportement et les performances. Les collaborateurs ont noté les comportements de leadership de leur proviseur et auto-évalué leur niveau de satisfaction au travail, d’efficience et de résistance, alors que les proviseurs appréciaient les conduites de citoyenneté et de revendication, ainsi que la performance professionnelle. Les résultats montrent que la perception du leadership répulsif est Positivement reliée à la résistance du suiveur et négativement à sa satisfaction professionnelle. En outre, une analyse des plus fructueuses a révélé que les variables évaluées par les collaborateurs étaient significativement en relation avec la perception du leadership répulsif, bien plus qu’avec les variables évaluées par les leaders, ce qui indique que la relation entre les résultats médiocres et le leadership négatif serait plus construite que réelle. Au total, le penchant à l’idéalisation du leadership peut aussi bien conduire à une propension à trop facilement condamner à tort et à travers le leadership qu’à la désignation d’un bouc émissaire tout trouvé pour expliquer de mauvais résultats.
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We consider a seller who owns two capacity-constrained resources and markets two products (components) corresponding to these resources as well as a bundle comprising the two components. In an environment where all customers agree that one of the two components is of higher quality than the other and that the bundle is of the highest quality, we derive the seller's optimal bundling strategy. We demonstrate that the optimal solution depends on the absolute and relative availabilities of the two resources as well as upon the extent of subadditivity of the quality of the products. The possible strategies that can arise as equilibrium behavior include a pure components strategy, a partial- or full-spectrum mixed bundling strategy, and a pure bundling strategy, where the latter strategy is optimal when capacities are unconstrained. These conclusions are contrary to findings in the prior literature on bundling that demonstrated the unambiguous dominance of the full-spectrum mixed bundling strategy. Thus, our work expands the frontier of bundling to an environment with vertically differentiated components and limited resources. We also explore how the bundling strategies change as we introduce an element of horizontal differentiation wherein different types of customers value the available components differently.
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A central design challenge facing network planners is how to select a cost-effective network configuration that can provide uninterrupted service despite edge failures. In this paper, we study the Survivable Network Design (SND) problem, a core model underlying the design of such resilient networks that incorporates complex cost and connectivity trade-offs. Given an undirected graph with specified edge costs and (integer) connectivity requirements between pairs of nodes, the SND problem seeks the minimum cost set of edges that interconnects each node pair with at least as many edge-disjoint paths as the connectivity requirement of the nodes. We develop a hierarchical approach for solving the problem that integrates ideas from decomposition, tabu search, randomization, and optimization. The approach decomposes the SND problem into two subproblems, Backbone design and Access design, and uses an iterative multi-stage method for solving the SND problem in a hierarchical fashion. Since both subproblems are NP-hard, we develop effective optimization-based tabu search strategies that balance intensification and diversification to identify near-optimal solutions. To initiate this method, we develop two heuristic procedures that can yield good starting points. We test the combined approach on large-scale SND instances, and empirically assess the quality of the solutions vis-à-vis optimal values or lower bounds. On average, our hierarchical solution approach generates solutions within 2.7% of optimality even for very large problems (that cannot be solved using exact methods), and our results demonstrate that the performance of the method is robust for a variety of problems with different size and connectivity characteristics.
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The generalized failure rate of a continuous random variable has demonstrable importance in operations management. If the valuation distribution of a product has an increasing generalized failure rate (that is, the distribution is IGFR), then the associated revenue function is unimodal, and when the generalized failure rate is strictly increasing, the global maximum is uniquely specified. The assumption that the distribution is IGFR is thus useful and frequently held in recent pricing, revenue, and supply chain management literature. This note contributes to the IGFR literature in several ways. First, it investigates the prevalence of the IGFR property for the left and right truncations of valuation distributions. Second, we extend the IGFR notion to discrete distributions and contrast it with the continuous distribution case. The note also addresses two errors in the previous IGFR literature. Finally, for future reference, we analyze all common (continuous and discrete) distributions for the prevalence of the IGFR property, and derive and tabulate their generalized failure rates.
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Este trabalho consiste num estudo epistemológico tendo por objeto a produção teóricometodológica em Comunicação Organizacional produzida no Brasil e no exterior. A tese procurou identificar, descrever, comparar e avaliar suas principais denominações, escolas, correntes teóricas, vinculações filosóficas e fatores sociais condicionantes. Para esse empreendimento houve a necessidade de elaboração de uma ampla revisão bibliográfica em epistemologia, assim como a proposição de metodologia específica para estudos epistemológicos. Essa metodologia contemplou abordagens qualitativas, provenientes da Filosofia, e abordagens quantitativas, provenientes da Bibliometria, entre outros. Neste caso, foram avaliados 1.181 registros e 517 documentos internacionais disponíveis nas bases de dados Web of Science, além da literatura produzida no Brasil e no exterior sobre o assunto. O estudo demonstrou que, em sua concepção hegemônica, a Comunicação Organizacional é profundamente marcada pelas ciências do management e concebida como um conjunto de práticas e atividades de comunicação voltadas à eficácia empresarial. Entretanto, enquanto realidade social e histórica, a comunicação organizacional é um objeto muito mais amplo e extenso, devido não apenas à existência de diversas formas de organização, mas também porque a interação das organizações, na atual configuração da sociedade em rede, é cada vez mais complexa.(AU)
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Este trabalho consiste num estudo epistemológico tendo por objeto a produção teóricometodológica em Comunicação Organizacional produzida no Brasil e no exterior. A tese procurou identificar, descrever, comparar e avaliar suas principais denominações, escolas, correntes teóricas, vinculações filosóficas e fatores sociais condicionantes. Para esse empreendimento houve a necessidade de elaboração de uma ampla revisão bibliográfica em epistemologia, assim como a proposição de metodologia específica para estudos epistemológicos. Essa metodologia contemplou abordagens qualitativas, provenientes da Filosofia, e abordagens quantitativas, provenientes da Bibliometria, entre outros. Neste caso, foram avaliados 1.181 registros e 517 documentos internacionais disponíveis nas bases de dados Web of Science, além da literatura produzida no Brasil e no exterior sobre o assunto. O estudo demonstrou que, em sua concepção hegemônica, a Comunicação Organizacional é profundamente marcada pelas ciências do management e concebida como um conjunto de práticas e atividades de comunicação voltadas à eficácia empresarial. Entretanto, enquanto realidade social e histórica, a comunicação organizacional é um objeto muito mais amplo e extenso, devido não apenas à existência de diversas formas de organização, mas também porque a interação das organizações, na atual configuração da sociedade em rede, é cada vez mais complexa.(AU)
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Transportation Department, Joint Program Office for Intelligent Transportation Systems, Washington, D.C.
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"12-82."
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Este trabalho consiste num estudo epistemológico tendo por objeto a produção teóricometodológica em Comunicação Organizacional produzida no Brasil e no exterior. A tese procurou identificar, descrever, comparar e avaliar suas principais denominações, escolas, correntes teóricas, vinculações filosóficas e fatores sociais condicionantes. Para esse empreendimento houve a necessidade de elaboração de uma ampla revisão bibliográfica em epistemologia, assim como a proposição de metodologia específica para estudos epistemológicos. Essa metodologia contemplou abordagens qualitativas, provenientes da Filosofia, e abordagens quantitativas, provenientes da Bibliometria, entre outros. Neste caso, foram avaliados 1.181 registros e 517 documentos internacionais disponíveis nas bases de dados Web of Science, além da literatura produzida no Brasil e no exterior sobre o assunto. O estudo demonstrou que, em sua concepção hegemônica, a Comunicação Organizacional é profundamente marcada pelas ciências do management e concebida como um conjunto de práticas e atividades de comunicação voltadas à eficácia empresarial. Entretanto, enquanto realidade social e histórica, a comunicação organizacional é um objeto muito mais amplo e extenso, devido não apenas à existência de diversas formas de organização, mas também porque a interação das organizações, na atual configuração da sociedade em rede, é cada vez mais complexa.(AU)
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The aim of this paper is to analyze the political, social and economic background of the divergence of Belarusian and Ukrainian transitions. We focus on Belarus in order to find explanation for questions such as why could Lukashenko remain the authoritarian leader of Belarus, while in Ukraine the position of the political elite had proved less stable and collapsed in 2004. On the theoretical framework of elite-sociology, we seek to determine whether the internal factors (as macroeconomic conditions, standard of living, the oppressive nature of the political system and the structure of the political elite) play a significant role in the operation of the domino effect. This article emphasises the determining role of immanent internal factors, thus the political stability in Belarus can be explained by the role of the suppressing political regime, the hindrance of democratic rights and the relatively good living conditions that followed the transformational recession. Whilst in Ukraine, the markedly different circumstances brought forth the success of the Orange Revolution.
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The purpose of this study is to investigate supervisory support as a moderator of the effects of role conflict and role ambiguity on emotional exhaustion and job satisfaction. This study also examines the moderating role of supervisory support on the relationship between emotional exhaustion and job satisfaction. Data were collected from a sample of frontline hotel employees in Northern Cyprus. The aforementioned relationships were tested based on hierarchical multiple regression analysis. The results demonstrate that supervisory support mitigates the impact of role conflict on emotional exhaustion and further reveal that supervisory support reduces the effect of emotional exhaustion on job satisfaction. There is no empirical support for the rest of the hypothesized relationships. Implications of the empirical results are discussed, and future research directions are offered.
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The current study investigated the effects of job satisfaction and organizational commitment on organizational citizenship behavior and turnover intentions. The study also examined the effect of organizational citizenship behavior on turnover intentions. Frontline employees working in five-star hotels in North Cyprus were selected as a sample. The result of multiple regression analyses revealed that job satisfaction is positively related to organizational citizenship behavior and negatively related to turnover intentions. Affective organizational commitment was found to be positively related to organizational citizenship behavior. However, the study found no significant relationship between organizational commitment and turnover intentions. Furthermore, organizational citizenship behavior was negatively associated with turnover intentions. The study provides discussion and avenues for future research.
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An assessment of how hotel guests view in-room entertainment-technology amenities was conducted to compare the importance of these technologies to how they performed. In-room entertainment technology continues to evolve in the hotel industry. However, given the multitude of entertainment products available in the marketplace today, hoteliers have little understanding of guests’ expectations and of which in-room entertainment-technology amenities will drive guest satisfaction and increase loyalty to the hotel brand. Given that technology is integral to a hotel stay, this study seeks to evaluate the importance and performance of in-room entertainment-technology amenities. Findings indicate that free-to-guest television (FTG TV) and high-speed Internet access were the two most important inroom entertainment-technology amenities when it comes to the selection of a hotel for both leisure and business travelers. The Importance/Satisfaction Matrix presented in the current study showed that many of the in-room entertainment-technology amenities are currently a low priority for guests. Keywords: importance-performance analysis, hotel, in-room entertainment technologies
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The purpose of this study was to investigate the motivations that push consumers to dine out and restaurant attributes that pull diners to a specific restaurant. Surveys were administered to a convenience sample of 559 respondents at a large university in the Southwest of the USA. Crosstabs, ANOVA, Correlations, Factor Analysis and Multiple Regression were employed to explore differences and relationships between variables. Findings identified a profile of diners at casual restaurants. Using the involvement construct, the push-pull motivational framework, and the hedonic and utilitarian motivational framework, results of this study indicate two primary reasons behind the decision to dine out at casual restaurants and six principal attributes that draw customers into these types of restaurants. In addition, diners were categorized into high/medium/low involvement categories and the linkages between involvement levels and motivations were explored. Both hedonic and utilitarian motivations were identified. Furthermore, motivational factors and restaurant attributes were found to predict diner loyalty. This paper provides the restaurant industry with insight and understanding as to what attracts diners into an establishment and what influences decisions behind dining out.