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71.
S. Bereg J. M. Díaz-Báñez D. Flores-Peñaloza S. Langerman P. Pérez-Lantero J. Urrutia 《Journal of Combinatorial Optimization》2016,31(3):1160-1173
A set of vertical bars planted on given points of a horizontal line defines a fence composed of the quadrilaterals bounded by successive bars. A set of bars in the plane, each having one endpoint at the origin, defines an umbrella composed of the triangles bounded by successive bars. Given a collection of bars, we study how to use them to build the fence or the umbrella of maximum total area. We present optimal algorithms for these constructions. The problems introduced in this paper are related to the Geometric Knapsack problems (Arkin et al. in Algorithmica 10:399–427, 1993) and the Rearrangement Inequality (Wayne in Scripta Math 12(2):164–169, 1946). 相似文献
72.
K. Fernández-Aguirre M. I. Landaluce-Calvo A. Martín-Arroyuelos J. I. Modroño-Herrán 《Journal of applied statistics》2011,38(11):2661-2679
For a higher education public institution, young in relative terms, featuring local competition with another private and both long-established and reputed one, it is of great importance to become a reference university institution to be better known and felt with identification in the society it belongs to and ultimately to reach a good position within the European Higher Education Area. These considerations have made the university governors setting up the objective of achieving an adequate management of the university institutional brand focused on its logo and on image promotion, leading to the establishment of a university shop as it is considered a highly adequate instrument for such promotion. In this context, an on-line survey is launched on three different kinds of members of the institution, resulting in a large data sample. Different kinds of variables are analysed through appropriate exploratory multivariate techniques (symmetrical methods) and regression-related techniques (non-symmetrical methods). An advocacy for such combination is given as a conclusion. The application of statistical techniques of data and text mining provides us with empirical insights about the institution members’ perceptions and helps us to extract some facts valuable to establish policies that would improve the corporate identity and the success of the corporate shop. 相似文献
73.
Cecilia Castaño Juan Martín Susana Vázquez José Luís Martínez 《International labour review / International Labour Office》2010,149(3):343-360
This paper examines the findings of a survey of the personal, educational and professional profiles of a sample of male and female senior executives of companies operating in Spain. The women were found to be younger; they had fewer children, resorted to more domestic help, and earned less than the men, although they often had higher qualifications. Yet cultural patterns and institutional barriers still prevent them from making full use of their capabilities. In spite of recent legislative efforts to promote gender equity at work, more than nine out of ten senior executives are still men. 相似文献
74.
Susana Jiménez-Murcia Eva M. Álvarez-Moya Randy Stinchfield Fernando Fernández-Aranda Roser Granero Neus Aymamí Mónica Gómez-Peña Nuria Jaurrieta Francesca Bove José M. Menchón 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2010,26(2):235-248
We aimed to explore the association between age of onset of gambling problems and current psychopathological and clinical
status, personality profile and therapeutic outcome in a sample of pathological gamblers. A total of 904 consecutive pathological
gambling patients were administered several instruments about gambling behavior, psychopathology and personality. They received
a 4-month cognitive-behavioral group treatment. Information of dropouts and relapses during treatment was registered. Older
age of onset of gambling problems was associated with higher general psychopathology (SCL-90-R Paranoid Ideation, Psychoticism,
Depression; P < 0.015). Younger age of onset was related to greater severity of pathological gambling (P < 0.015), higher novelty seeking, and lower self-directedness (P < 0.015). No statistically significant association was found between age of onset and relapse and dropouts during treatment.
Age of onset of gambling problems seems to influence the clinical presentation of pathological gambling but not treatment
outcome. 相似文献
75.
76.
In this article, we outline a simple and intuitively appealing procedure to derive default priors. The main idea is to regard
the choice of such a prior as a formal Bayesian decision problem. We also discuss Jeffreys prior and more generally the reference
prior of Bernardo (J R Stat Soc B 41:113–147, 1979) from this standpoint. 相似文献
77.
Yaromir Muñoz Jean-Charles Chebat Adilson Borges 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2013,29(3):507-524
The present study focuses on the effects of graphic warnings related to excessive gambling. It is based upon a theoretical model derived from both the Protection Motivation Theory (PMT) and the Elaboration Likelihood Model (ELM). We focus on video lottery terminal (VLT), one of the most hazardous format in the gaming industry. Our cohort consisted of 103 actual gamblers who reported previous gambling activity on VLT’s on a regular basis. We assess the effectiveness of graphic warnings vs. text-only warnings and the effectiveness of two major arguments (i.e., family vs. financial disruption). A 2 × 2 factorial design was used to test the direct and combined effects of two variables (i.e., warning content and presence vs. absence of a graphic). It was found that the presence of a graphic enhances both cognitive appraisal and fear, and has positive effects on the Depth of Information Processing. In addition, graphic content combined with family disruptions is more effective for changing attitudes and complying with the warning than other combinations of the manipulated variables. It is proposed that ELM and PMT complement each other to explain the effects of warnings. Theoretical and practical implications are discussed. 相似文献
78.
AbstractWe argue that a person’s identity can be changed by seemingly irrelevant primes to the point where one expects to be treated as a member of an activated social group. We further argue that primes should only influence the self to the extent that they are seen as valid. We experimentally manipulated conditions that foster perceptions of prime validity using a head movement induction. Previous research has linked head nodding to higher levels of confidence than head shaking. Participants primed with the African American stereotype (versus control) expected more future discrimination, but only if they were nodding their heads. Results are discussed with respect to research on priming and validation processes. 相似文献
79.
Alexandra Vázquez Ángel Gómez Juan R. Ordoñana Borja Paredes 《Revista de Psicología Social》2013,28(3):512-530
AbstractIdentity fusion is a visceral feeling of oneness with a group. Although research on identity fusion focuses on the alignment of individuals with groups, we propose that fusion can develop between two individuals. In particular, we explore for the first time identity fusion between siblings and its relation with endorsement of extreme behaviour to protect the sibling. In a study conducted with 761 couples of siblings we found that fusion with the sibling is positively associated with willingness to fight and die for the sibling. Additionally, we address the relation between interpersonal and extended fusion. Specifically, a positive association between fusion with the sibling and fusion with the country emerged. The hypothesis that extended fusion might require the projection of interpersonal ties to a large category is discussed. 相似文献
80.
Catalina Amuedo-Dorantes Miguel A. Malo Fernando Muñoz-Bullón 《Journal of Labor Research》2008,29(2):138-161
This paper evaluates the impact of agency work on temporary workers’ posterior likelihood of being hired on a permanent basis.
We use administrative data on two groups of temporary workers for whom we have complete work histories since they are first
observed in 1998 until the year 2004. One group consists of workers employed through a temporary help agency (THA) at some
point during the 7 year period under examination (treated group). The other group is composed of individuals employed as direct-hire
temps at some point between 1998 and the year 2004, but never via a THA (control group). Using propensity score matching methods,
we find that agency workers endure a lower likelihood of being hired on a permanent basis following their temporary assignment
than their direct-hire counterparts. However, there are relevant differences for some groups of workers.
相似文献
Catalina Amuedo-DorantesEmail: |