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81.
现实的社会主义运动都发生在落后的国家,沉重的经济负担、严酷的生存压力、极大地困扰和影响了它们的运转,让它们的政权、生产力、所有制等一系列问题上难以把握和应对。整个二十世纪社会主义的实践,多拘泥于理论,偏重于形式,定位过高过全,忽略了它的客观性与复杂性,显得呆板和僵硬。 相似文献
82.
We know from Li's theorem (1993) that the stability set of order d may be empty for some preference profiles. However, one may wonder whether such situations are just rare oddities or not. In this paper, we partially answer this question by considering the restrictive case where the number of alternatives is the smallest compatible with an empty stability set. More precisely, we provide an upper bound on the probability for having an empty stability set of order d for the majority game under the Impartial Weak Ordering Culture assumption. This upper bound is already extremely low for small population and tends to zero as the number of individuals goes to infinity. 相似文献
83.
This paper presents an axiomatic characterization of the Owen set of transportation games. In the characterization we use six properties including consistency (CONS2) and splitting and merging (SM) which are firstly proposed and defined for this setup in the present paper. 相似文献
84.
85.
《Journal of American college health : J of ACH》2013,61(4):455-461
Few college students meet fruit and vegetable intake recommended requirements, and most receive no information from their institutions about this issue. The avoidable disease burden among students is large, the necessary information infrastructure exists, and Healthy People 2010 objectives indicate efforts should be taken to increase intake. Objective: The authors examined the association of high-risk behaviors and fruit and vegetable intake to inform design of multiple risk factor interventions. Participants and Methods: The authors obtained data from a sample of 40,209 18- to 25-year-old college students who completed the American College Health Association-National College Health Assessment during the spring 2002 and 2003 semesters. Results: Predictors of high fruit and vegetable intake for men and women included better: seatbelt and helmet use, physical activity, perceived health, sleep, self-care behaviors, and grades. Other notable predictors of high intake were reduced likelihood of cigarette smoking, alcohol use, drinking and driving, and feeling hopeless in both sexes; reduced likelihood of drinking and driving among men; and a greater likelihood of anorexia among women. Conclusions: The authors discuss implications of these findings. 相似文献
86.
Abstract. This is probably the first paper which discusses likelihood inference for a random set using a germ‐grain model, where the individual grains are unobservable, edge effects occur and other complications appear. We consider the case where the grains form a disc process modelled by a marked point process, where the germs are the centres and the marks are the associated radii of the discs. We propose to use a recent parametric class of interacting disc process models, where the minimal sufficient statistic depends on various geometric properties of the random set, and the density is specified with respect to a given marked Poisson model (i.e. a Boolean model). We show how edge effects and other complications can be handled by considering a certain conditional likelihood. Our methodology is illustrated by analysing Peter Diggle's heather data set, where we discuss the results of simulation‐based maximum likelihood inference and the effect of specifying different reference Poisson models. 相似文献
87.
沈定珠 《绍兴文理学院学报》2001,21(9):101-104
通过绍兴文理学院97级学生1026人两次的五项达标成绩的追踪研究,发现五个项目不同分数段的敏感性存在着一定的差异,大学生的体质提高与体育教育有密切关系,同时也与五项素质达标有一定的相关性. 相似文献
88.
This paper demonstrates the use of maxima nomination sampling (MNS) technique in design and evaluation of single AQL, LTPD, and EQL acceptance sampling plans for attributes. We exploit the effect of sample size and acceptance number on the performance of our proposed MNS plans using operating characteristic (OC) curve. Among other results, we show that MNS acceptance sampling plans with smaller sample size and bigger acceptance number perform better than commonly used acceptance sampling plans for attributes based on simple random sampling (SRS) technique. Indeed, MNS acceptance sampling plans result in OC curves which, compared to their SRS counterparts, are much closer to the ideal OC curve. A computer program is designed which can be used to specify the optimum MNS acceptance sampling plan and to show, visually, how the shape of the OC curve changes when parameters of the acceptance sampling plan vary. Theoretical results and numerical evaluations are given. 相似文献
89.
2 0世纪 2 0年代后期 ,河南发生严重旱灾 ,旅平河南赈灾会组织了颇具规模的灾民移垦活动 ,他们经过比较周密的部署 ,将数万嗷嗷待哺的河南灾民移送到了东北 ,并尽可能地使灾民得到较为妥善的安置。旅平河南赈灾会的此次灾民救助活动在民国河南灾荒救济史上留下了光辉的一页。 相似文献
90.
王丽娟 《华南农业大学学报(社会科学版)》2006,5(1):71-75
貂蝉“连环计”故事来自民间,之后被文人接受。元明时期,“连环计”故事备受欢迎,主要体现在文人与民间在创作上的有意偏好、戏曲选本对《连环计》杂剧和《连环记》传奇的浓厚兴趣和《连环记》传奇的备受赞赏三个方面。“连环计”故事具体地说,实际上是历史加计谋加美女的故事。文人与民间对由这三种因素组合而成的“连环计”故事的喜爱,体现的是重史、尚智、爱美的共同民族文化心理。 相似文献