中国省域休闲渔业综合发展水平评价及障碍因子分析

休闲渔业是渔业经济新的增长点,休闲渔业可持续发展有助于传统渔业产业转型升级。以休闲渔业可持续发展评价为研究目标,基于物理−事理−人理方法论（WSR）,从资源环境、产业经济、社会文化三个维度构建休闲渔业可持续发展评价指标体系,并运用层次分析法（AHP）和熵值法相结合的方法计算指标权重。结果显示,休闲渔业可持续发展指标权重偏重于休闲渔业资源环境可持续发展,对休闲渔业产业经济可持续发展和休闲渔业社会文化可持续发展关注较少,系统内部发展较为失衡。实现休闲渔业可持续发展需改变以牺牲资源和环境为代价的发展模式,促进资源环境、产业经济、社会文化三者协调发展。

     

Anna Karenina and the two envelopes problem

The Anna Karenina principle is named after the opening sentence in the eponymous novel: Happy families are all alike; every unhappy family is unhappy in its own way. The two envelopes problem (TEP) is a much-studied paradox in probability theory, mathematical economics, logic and philosophy. Time and again a new analysis is published in which an author claims finally to explain what actually goes wrong in this paradox. Each author (the present author included) emphasises what is new in their approach and concludes that earlier approaches did not get to the root of the matter. We observe that though a logical argument is only correct if every step is correct, an apparently logical argument which goes astray can be thought of as going astray at different places. This leads to a comparison between the literature on TEP and a successful movie franchise: it generates a succession of sequels, and even prequels, each with a different director who approaches the same basic premise in a personal way. We survey resolutions in the literature with a view to synthesis, correct common errors, and give a new theorem on order properties of an exchangeable pair of random variables, at the heart of most TEP variants and interpretations. A theorem on asymptotic independence between the amount in your envelope and the question whether it is smaller or larger shows that the pathological situation of improper priors or infinite expectation values has consequences as we merely approach such a situation.     

Transformation of a recreational youth group into community service group during the COVID-19 pandemic

ABSTRACT

This narrative is based on the solidarity of a recreational youth group during the COVID-19 pandemic. (Note: Youth refers to older adolescents and young adults, 17–28). The narrative describes the journey and transformation of the youth group from playing cricket to the engagement in community service during the lockdown period. This paper also presents how the presence of the group shifted from physical to a digital platform, and the focus turned from recreation to social support; with that change in the focus, how a small group of youths turned into a larger group to mobilize and utilize resources for community service during the crisis time.     

西方城市游憩空间规划与设计探析

游憩空间是城市规划与设计的重要组成内容。西方发达国家的经验表明,随着城市化的迅速发展,人的闲暇时间增多,游憩空间在满足人们日益增长的文化精神需求方面变得越来越重要,对表达人性、促进高技术与高感情的平衡、突出城市的人道化等都有重要的价值;游憩空间常常从地理学的、统计学的、人口学的、生态学的、社会学的、文化学的和经济学的若干角度进行规划与设计;当游憩越来越成为人们日常生活的重要组成部分时,政府必须为人们提供必要的游憩空间。吸取和借鉴西方发达国家成功的经验,有助于中国城市发展走向科学、理性、文化内涵丰富之路。     

论李永康小小说的审美特征

李永康的小小说创作独具特色,巧妙的诗化结构、浓郁的娱乐趣味和深厚的哲理意蕴是其作品突出的审美特征,其创作为小小说的进一步发展提供了有益的参考和借鉴。     

红学研究中的泛娱乐化、非文学化、非学术化问题

红学研究中存在的单纯追求趣味化、泛娱乐化,对《红楼梦》解读的非文学作品化、神秘化以及红学文章(著述)的非学术化问题,已经超出了学术界,成为当前社会的一种文化现象。这是低俗、庸俗、媚俗文化风气在红学领域的表现,是对《红楼梦》的普及和传承的干扰和背离。这种情况之所以出现,从根本上讲是学术界(红学界)自身存在一些混乱理论没有得到很好地清理,背离了红学的宗旨。《红楼梦》是中华文化的精髓和代表。正确地普及、传承《红楼梦》,正确地向外国人介绍《红楼梦》,这关系到正确地介绍中华文化的问题。我们对《红楼梦》要有敬畏之心,不能任意解构、糟蹋《红楼梦》。     

城市滨水区休闲旅游产品开发研究--以苏州市沿江地区为例

在综述国内有关城市滨水区旅游开发的文献基础之上,对苏州市沿江地区休闲旅游产品开发的必要性、开发策略和具体措施进行了探讨.希望能对我国城市滨水区休闲旅游产品开发提供有益的参考.     

Effects of Etiological Agent and Bather Shedding of Pathogens on Interpretation of Epidemiological Data Used to Establish Recreational Water Quality Standards

The overall goal of the study reported herein was to use techniques in the field of risk assessment (specifically a state-space population dynamic model of disease transmission within recreational waters) to explore the relative significance of (1) active shedding of microorganisms from bathers themselves, and (2) the type and concentration of etiological agent on the observed heterogeneity of the incidence of illness in epidemiological studies that have been used to develop ambient water quality criteria. The etiological agent and corresponding dose ingested during recreational contact was found to significantly impact the observed incidence of illness in an epidemiological study conducted in recreational water. In addition, the observed incidence of illness was found not to necessarily reflect background concentrations of indicator organisms, but rather microorganisms shed during recreational contact. Future revisions to ambient water quality criteria should address the etiological agent, dose, and the significance of microbial shedding relative to background concentrations of pathogens and indicator organisms in addition to the incidence of illness and concentration of indicator organisms. Without a quantitative assessment of these additional variables, study findings may potentially be site specific and not representative of the health risks associated with specific indicator concentrations in all recreational waters.     

现代奥运会对举办城市公共游憩空间扩展影响的研究述评——兼论对2008年北京奥运会的借鉴意义

本文述评了国内外对现代奥运会的举办城市公共游憩空间扩展影响的研究,以“奥运设施更重要的功用是奥运会后服务于公众的公共游憩空间”这个观点为主线,探讨了对2008年北京奥运会的借鉴意义。     

改革开放30年北京市民的休闲生活

1978年后,伴随着体制改革和经济增长,北京市居民休闲生活发生了深刻的变化。30年来,市民的休闲消费和休闲活动,经历了启动期、爆发期和成熟期三个阶段。休闲方式变迁的历史过程反映了改革开放后北京市民生活质量的日益提高。