754,377 research outputs found

    Strong enhancement of noise-induced escape by nonadiabatic periodic driving due to transient chaos

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    We have found a mechanism by which a moderately weak nonadiabatic periodic driving may significantly facilitate noise-induced interwell transitions in an underdamped multiwell system. The mechanism is associated with the onset of a homoclinic tangle in the noise-free system: if the ratio of the driving amplitude A to the damping Gamma exceeds a critical value similar to 1, then the basins of attraction of the linear responses related to different wells are mixed in a complex manner in some layer associated with the separatrix of the undriven nondissipative system, and the minimal energy in such layer is lower than the top of the barrier. Thus the energy to which the system needs to be activated by the noise, to be able to make a transition, is lower than the top of the barrier

    Solution of the boundary value problem for optimal escape in continuous stochastic systems and maps

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    Topologies of invariant manifolds and optimal trajectories are investigated in stochastic continuous systems and maps. A topological method is introduced that simplifies the solution of boundary value problems: The activation energy is calculated as a function of a set of parameters characterizing the initial conditions of the escape path. The method is applied explicitly to compute the optimal escape path and the activation energy for a variety of dynamical systems and maps

    POWERED BY HEALTH: HEALTHISM IN FOOD MARKETING AND CONSUMER RESEARCH. A SYSTEMATIC REVIEW AND A CRITICAL DISCOURSE ANALYSIS.

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    Health has become so tightly connected to food that it feels omnipresent in the food marketplace and marketing research journals. In fact, the omnipresence of food brands with health-related value propositions and the ever-growing abundance of marketing research dedicated to health and food consumption are symptomatic of the same issue: the power of a cultural discourse that establishes health as a super-value and a personal responsibility, known as the ideology of healthism. The implications of healthism are controversial. On the one hand, healthism produces an environment for empowerment, increased health involvement and political democratization. On the other, it creates messages about appropriate and responsible forms of consumption, individuals’ freedoms and duties, moralization, the promotion of some interests at the expense of others, health-related anxieties, cost increase, etc. In the social reality increasingly defined and structured by markets, understanding how marketing discourse frames health in the context of food may be one of the most important yet overlooked aspects of understanding healthism. Founded in social construction of reality perspective and theoretical lens of critical social research, this work examines marketing knowledge about health, its underlying assumptions, social implications and consequences that are routinely overlooked. By conducting a review and a critical discourse analysis of a systematically produced sample of 190 marketing and consumer research publications about health and food, this study revealed research trends in the field, mapped the structure of research streams, and identified three dominant, co-existing discourses. The three discourses –“nutri/edu” discourse, “simple solutions” discourse, and “win-win” discourse – employ different food-related meanings and problematizations, rationalize healthism using different appeals and arguments, and produce different solutions for consumer wellbeing and empowerment. Each discourse thereby establishes the market reality of food as the main stage for enactment of responsibility for health. The three discourses with their respective vocabularies provide a common interpretative frame equally suitable for scholars, marketers, policymakers and consumers. The variation among the three discourses demonstrates the power of healthism, which offers an internally complex and heterogeneous system of meanings that nevertheless provides a unifying, value-based platform for various market actors. Health thus has an ideological function in marketing and consumer research – it helps establish a higher level of legitimacy for the arguments about the nature of consumer choice, the food industry and marketing discipline and practice. Discerning underlying assumptions about health and food in marketing discourse works as both a critical assessment of marketing scholars’ taken for granted assumptions and as a stepping stone to better understand how public discourse shapes the social reality of markets and consumption. Moreover, this research draws attention to the relevance of critical discourse analysis for and of marketing research

    [Handwritten list of names by an unknown author #1]

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    Handwritten note by an unknown author, listing various names

    Ermenegildo Zegna: When Family Values Guide Global Expansion in the Luxury Industry

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    Ermenegildo Zegna is one of the most prominent examples of an Italian family business becoming a world leader in the luxury fashion industry. Four generations of Zegna family entrepreneurs turned the company from a small woollen mill in northern Italy into an international supplier of premium fabrics and luxury apparel. The company makes more than €1.20 billion in annual revenues, operates 555 international store locations and owns production facilities all over the world. Despite delocalization of production, the company demonstrates how strong brand reputation and company values together with cohesive vertical integration choices can sustain business growth both locally and globally. This case shows how a successful global expansion strategy in the luxury industry can be based on the logic of family values, such as a commitment to excellence, innovation, employees’ wellbeing, community welfare and respect for the environment

    The Prada Trend: Brand Building at the Intersection of Design, Art, Technology, and Retail Experience

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    Prada is one of the most successful Italian fashion businesses with unique design aesthetics and provocative counter-mainstream spirit. It is also one of a few companies in the global luxury industry that have chosen to remain independent from mergers with multinational conglomerates, establishing and following its own strategy based on distinction and management coherence. The Prada case is an exemplary depiction of how global recognition of a luxury brand stems from a combination of a constant search for differentiation and shrewd business decisions ensuring efficiency, functionality, and resistance through time. Direct control over retail, well-delineated and uniform brand portfolio with quest for aesthetic and cultural relevance, transcendence of pure commerce to the world of art, technology, architecture, and focus on consumer dialogue through retail experience—all these elements help Prada become one of the most ambitious and trendsetting global luxury brands of modern days

    Mapping the Discipline of the Olympic Games An Author-Cocitation Analysis

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    The authors conducted an author cocitation analysis on prominent authors writing about the Olympics during the 1990s. Author cocitation is an established bibliometric technique that can be used to measure the relative similarities of topics written about by the cited authors. This enables a visual representation of the “intellectual space” of the discipline, in this case the Olympics, to be created for the period under review. So core and peripheral research areas are identified, along with their major contributors. The representation appears as a two-dimensional cluster-enhanced map. Subject expertise was then applied to the results to place labels on the generated clusters of authors and their topics

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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