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101.
In the standard arrovian framework and under the assumption that individual preferences and social outcomes are linear orders on the set of alternatives, we provide necessary and sufficient conditions for the existence of anonymous and neutral rules and for the existence of anonymous and neutral majority rules. We also determine a general method for constructing and counting these rules and we explicitly apply it to some simple cases. 相似文献
102.
In this paper we study the problem of the determination of a fair allocation in a co-insurance problem, i.e., how some insurance companies have to share the risk and the premium. We develop two procedures that produce a proportional and an equitable allocation, respectively. The procedures are applied to a real situation arising from environmental risk and the resulting allocations are compared with the classical quota share allocation and with an envy-free allocation resulting from a procedure presented in Fragnelli and Marina (Insur. Math Econ 33:75–85, 2003). 相似文献
103.
This study explored whether the reported inability of newborns to perceive object unity could result from the limited abilities of newborns to recognize the correspondence between 2 stimuli that were identical except for the presence or absence of an occluder. Five experiments were carried out using a visual habituation technique. The results of Experiment 1 indicated that newborns were capable of recognizing the perceptual correspondence between a nonoccluded and an occluded form. More intriguing, the outcomes of Experiments 2, 3, and 4 suggested that newborns find a partly occluded form to be more similar to a completely unoccluded form than to an unoccluded form containing a gap. Finally, even if newborns are able to perceive the correspondence between a partly occluded object and a complete form, the presence of this skill does not appear sufficient to imply the ability to manifest veridical object unity perception at birth (Experiment 5). 相似文献
104.
Price AE Corwin SJ Friedman DB Laditka SB Colabianchi N Montgomery KM 《Journal of aging and physical activity》2011,19(2):147-168
Physical activity may promote cognitive health in older adults. Popular media play an important role in preventive health communication. This study examined articles discussing associations between physical activity and cognitive health in top-circulating magazines targeting older adults. 42,753 pages of magazines published from 2006 to 2008 were reviewed; 26 articles met inclusion criteria. Explanations regarding the link between physical activity and cognitive health were provided in 57.7% of articles. These explanations were generally consistent with empirical evidence; however, few articles included empirical evidence. Physical activity recommendations were presented in 80.8% of articles; a wide range was recommended (90-300 min of physical activity per wk). Socioeconomic status and education level were not mentioned in the text. Results suggest an opportunity for greater coverage regarding the role of physical activity in promoting cognitive health in popular media. Magazine content would benefit from including more empirical evidence, culturally sensitive content, and physical activity recommendations that are consistent with U.S. guidelines. 相似文献
105.
Daniela Grunow Silke Aisenbrey Marie Evertsson 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2011,63(3):395-430
This article compares the duration of and consequences for employment interruptions for mothers with distinct educational qualifications in cross-national perspective. We analyze the duration of mothers?? employment interruption and the relative quality of the job after childbirth, for high and low qualified mothers in Germany, Sweden, and the United States. Analyses are based on harmonized national longitudinal data sets (GLHS-West, NLSY, LNU), which allow us to study mothers?? careers over the past 30?C35 years. We apply event-history analysis to study how long mothers with distinct educational levels interrupt employment after childbirth, and how the patterns of return to work differ with respect to mothers?? educational level. In all three countries the highly educated display a greater labor market attachment. In the US, almost half of the mothers with some college background, compared to only a quarter of high-school dropouts stay employed continuously after childbirth. In Sweden, basically all mothers take time-out for at least half a year. In Germany, 25% of mothers with university entrance qualification do not claim parental leave. In Germany and Sweden consequences of leave extensions seem to operate independent of mothers?? educational levels. In the U.S. medium and highly educated mothers tend to return more slowly after the enactment of the FMLA. 相似文献
106.
Nicholas Bloom Renata Lemos Raffaella Sadun Daniela Scur John Van Reenen 《Journal of the European Economic Association》2014,12(4):835-876
Over the last decade the World Management Survey (WMS) has collected firm‐level management practices data across multiple sectors and countries. We developed the survey to try to explain the large and persistent total factor productivity (TFP) differences across firms and countries. This review paper discusses what has been learned empirically and theoretically from the WMS and other recent work on management practices. Our preliminary results suggest that about a quarter of cross‐country and within‐country TFP gaps can be accounted for by management practices. Management seems to matter both qualitatively and quantitatively for performance at the level of the firm and the nation. Competition, governance, human capital, and informational frictions help account for the variation in management. We make some suggestions for both policy and future research. 相似文献
107.
Conti Pier Luigi Di Iorio Alberto Guandalini Alessio Marella Daniela Vicard Paola Vitale Vincenzina 《Statistical Methods and Applications》2020,29(1):1-24
Statistical Methods & Applications - This paper focuses on the estimation of the concentration curve of a finite population, when data are collected according to a complex sampling design with... 相似文献
108.
Wiener Melanie Maresch Daniela Breitenecker Robert J. 《Review of Managerial Science》2020,14(2):345-363
Review of Managerial Science - The importance of public and private third-party funding of universities has changed over the last decades. However, the knowledge about how universities finance... 相似文献
109.
110.
Kantcheva DA 《Journal of psychosocial nursing and mental health services》2002,40(5):8; author reply 8-8; author reply 9