Risk Aversion in Travel Mode Choice with Rank-Dependent Utility

Using 2004 stated preference data on travel mode collected in the Zürich area, different parametric specifications of the rank-dependent utility function in a logit mixture model show that commuters are weakly averse to small-time losses. The results also justify Yaari's dual theory of choice under risk, that the utility function is linear on outcomes but that the perception of corresponding probabilities is biased. For leisure travel, the travelers are risk neutral to small losses of time.     

我国失地农民安置补偿模式的重构

在深层次分析和归纳失地农民在失地过程中丧失的权利和利益的基础上,对现行失地农民安置补偿模式进行了深刻的剖析,提出了新的失地农民安置补偿模式———“统筹兼顾、合理补偿”模式,以期实现对失地农民合法权益保护的帕累托改进。     

能源法哲学之思:内涵、学科属性及主题

能源法哲学是人们对人类与能源沟通的价值原则和依据以及对人类与能源沟通中产生的知识体系的反思,它揭示了能源法运作的基本规律,说明了能源法的目的和意义,描述了达成上述目的和意义的原则与方法。能源法哲学既关注能源是什么,又关注能源法是什么并具有逻辑和语言的证明性。但是,能源法哲学并不是单向度的理论体系,它既需要用哲学的观点和方法对能源法的根本性问题进行理性反思,又需要强调能源法的一般性和普遍性的法律价值。因此,在“能源法的哲学”和“哲学的能源法”的视野下,当代能源法哲学应该通过体系的理论性和现实性为人类社会揭示如何实现美好的能源生活的可能。     

浅析竞技健美操运动员集训期的合理膳食与科学计量

竞技健美操运动集训期主要通过糖酵解和有氧氧化供能,需要补充更多的能量。食物作为主要的能源物质,科学搭配,合理膳食显得尤为重要。通过查阅大量的文献资料,从竞技健美操集训期的供能特点、竞技健美操运动员对营养物质的需求等方面进行探讨,并就如何合理安排膳食,怎样科学计量做了一个实例,旨在为竞技健美操运动员的合理膳食和营养补充提供参考。     

Housing Preferences of Vulnerable Elders in Suburbia

This article explores whether well and vulnerable elders residing in the suburbs differ in terms of: their level of satisfaction with their current living arrangement; their perception that they face a move within the next two years; and their level of interest in a series of different housing options. Our data support theoretical models that pose that diminished economic, physical, and social resources "push" vulnerable elders towards relocation. The data revealed that while the majority of well and vulnerable elders expressed high levels of satisfaction with their current homes, the vulnerable elders were significantly more likely to feel they faced an upcoming move. Housing options of interest to these vulnerable elders and implications for community planners are also addressed.     

Obesity and Food Choices Among Faculty and Staff at a Large Urban University

Abstract

Objective: In order to address increasing health care costs associated with obesity, this study sought to determine prevalence of overweight and obesity and examine eating behaviors, food choices, health beliefs, and attitudes of university employees. Participants and Methods: An online survey was distributed to > 3,800 faculty and staff at a large public metropolitan university in Winter 2008. Results: Almost half (48%) of 806 respondents were classified as overweight or obese. Compared to those with normal weights, overweight and obese respondents consumed fewer fruits and vegetables (p < .05), were less confident in making healthful food choices (p < .001), and were more influenced by food choices available in on-campus dining facilities (p < .05). Conclusions: Obesity among university employees warrants attention. Because these employees have less self-efficacy and consume less healthful diets than their normal weight colleagues, universities need to improve on-campus access to healthful foods.     

南海地缘政治形势发展的动因——以2011-2012年为研究时段

2011年以来,南海地缘政治形势发生了较为明显的变化.主要表现在:声索国对南海岛屿及资源争夺日益激烈,南海地区内外部力量互动更加频繁.其中,地缘政治矛盾是推动该地区地缘政治形势发展变化的深层次原因.目前,把南海问题纳入整体的地缘战略中,积极处理与声索国以及区域外大国的关系,是中国在解决南海争端中所作出的重要战略选择.     

Adaptive PORT–MVRB estimation: an empirical comparison of two heuristic algorithms

In this article, we deal with an empirical comparison of two data-driven heuristic procedures of estimation of a positive extreme value index (EVI), working thus with heavy right tails. The semi-parametric EVI-estimators under consideration, the so-called peaks over random threshold (PORT)–minimum-variance reduced-bias (MVRB) EVI-estimators, are location and scale-invariant estimators, based on the PORT methodology applied to second-order MVRB EVI-estimators. Trivial adaptations of these algorithms make them work for a similar estimation of other parameters of extreme events, such as the Value-at-Risk at a level p, the expected shortfall and the probability of exceedance of a high level x, among others. Applications to simulated data sets and to real data sets in the field of finance are provided.     

高等教育强国实现途径的逻辑选择

国家与高等教育之间存在着内在关联,具有正相关性规律。高等教育与强国具有的正相关性规律体现在高等教育强国中高等教育系统是由高等教育自身发展规律与一个国家发展规律有机结合而形成的具有超活力、超能量的高等教育系统。高等教育强国实现途径的逻辑选择应是基于二者具有正相关性规律促进高等教育系统的强盛和完善,在建设高等教育强国过程中需要发挥政府、社会组织、大学的应有所为。     

论21世纪中国电影发展面临的问题和选择

进入21世纪以来,中国当代电影为自身创造了多种选择的空间,它的适应性与自我调节的能力越来越强。但电影政治、文化与商业在成为中国当代电影主要支撑维度的同时,也存在着严重的危机,面临着新的选择与发展问题。传记影片创作与英模人物表现联系到了一起,艺术向政治呈现出一种无原则的妥协。消费文化大行其道,电影承担了市场实践、创造时尚、情感宣泄等众多功能。但是,电影不能一味扮演商业先知、娱乐时尚等众多角色,也不能在商业主义、主流主义和作者主义之间自以为是地走钢丝。中式商业大片,受好莱坞“高概念”商业大片影响,类型丰富,强调视听奇观,具有电影想像力,而且叙述生动,人物形象鲜明,制作精良,有着比较强的影像张力。发展大片是基于国际市场竞争与华语电影快速发展的需要,是与电视剧市场、音像市场、网络市场等多媒体市场竞争的需要。