Theoretical consideration of effect of fishing mortality on growth and reproduction of fish populations

Summary An increase in fish mortality due to fishing can theoretically change the growth and reproduction of fish populations from the viewpoint of adaptation. We address the issue of how an iteroparous fish should convert surplus energy into somatic growth and reproduction at each age under given conditions of mortality. A model of life history, which maximizes the net reproductive rate using the discrete maximum principle, is improved employing a new relationship between body weight and surplus energy which we have recently proposed. The model is applied to the North Sea plaicePleuronectes platessa, for which it has been reported that the average length of young fish had increased whereas that of old ones had decreased for some decades. Although the model cannot directly explain the former phenomenon, the two phenomena can be interpreted as a change in the optimal life history due mainly to an increase in mortality.     

The effects of social and political openness on the welfare state in 18 OECD countries

Studies examining the relationship between globalisation and the welfare state tend to focus on the effects of economic dimensions of globalisation, the extent to which a country is part of the world market. Globalisation also has social and political dimensions and the effects of these on welfare states – in terms of social security transfers and generosity – are studied in this article. Data from the KOF Index of Globalisation , the OECD Historical Statistics and the Comparative Welfare Entitlements Dataset are used to analyse the effects of social and political openness on the welfare states of 18 countries of the Organisation for Economic Cooperation and Development between 1970 and 2000. The analyses show that social security transfers and generosity have increased less in countries with the highest increase in social openness and that the welfare state is not affected by political openness.     

权力的特性及其要义

权力是一种社会关系。某个主体能够运用其拥有的资源,对他人发生强制性的影响力、控制力,促使或强迫对方按权力者的意志和价值标准作为或不作为,此即权力。法的本质内容主要是自由、权利与权力这三个基本元素构成的,其中权力是法自由和法权利的支柱。权力这个范畴在法学上受到重视,始于近代权力分立理论的启蒙和现代公法的发展,特别是政府职能的扩大,行政权力的无所不在。没有无权力的法。也不容许非法的权力。     

能源教育：节约型社会建设的重要途径

节约型社会建设目标的提出,进一步对节能工作提出了挑战。加强节约型社会建设和提高节能工作的效果,从国外经验来看,能源教育是一个现实和有效的途径。本文从能源教育的必要性及国外能源教育的经验入手,提出了中国发展能源教育的若干建议。     

试论我国刑事附带民事诉讼执行

刑事附带民事案件执行比普通民事执行更难,有其自身特殊的原因。解决刑事附带民事执行难问题已不是执行机构单方面的努力所能解决的,而需要公安机关、人民检察院、监狱和刑事审判庭等各个部门的通力合作。解决刑事附带民事执行难的最终机制在于建立国家补偿制度。     

State‐led transnationalism and migration: reaching out to the Argentine community in Spain

Abstract This article focuses on when and how states develop transnational policies. It presents a case study of a relatively small emigrant community, whose departure was not simply caused by poverty or crisis, but most recently by an economic and political debacle that questioned people's values and expectations. I focus on the state side of the equation and identify a shift in Argentina's policy after 2003, though also show how such policies came out of a long history of state intervention in population and migration and are now related to human rights concerns and the unfinished process of democratic consolidation. I argue that the state initiates political transnationalism, not migrants, and highlight the importance of some relatively unexplored factors in the understanding of the motivation, intensity and impact of the state's involvement, such as the characteristics of the emigrant community, the existence of specific political projects, the role of some domestic actors and processes, and the nature of international agreements.     

我校大学生的营养状况调查与对策研究

对三峡大学的部分学生的营养状况、营养知识和饮食行为进行问卷调查,结果表明:大学生营养不良程度较轻,其饮食的月消费水平大都在200~400元之间,但营养知识的掌握情况一般,同时存在一些不良的饮食行为,因此,学校应强化营养知识教育,在加强后勤管理与改革的同时,把提高学生食堂供餐的营养质量作为一项重要的工作来抓。     

美国能源教育发展及其启示

美国从1980年启动了“美国能源教育开发”项目,从不同层面开展对国民的能源教育,由此构建了覆盖全国的能源教育体系,找到了应对能源危机的教育途径,在提高国民的能源意识、增强国民的节能技术和节能自觉性,化解能源危机等方面取得了显著成就。美国能源教育开发的经验值得我们借鉴。     

A STUDY OF STUDENTS＇ANXIETYON THE LISTENING PERFORMANCE IN CET BAND IV

This paper mainly focuses on investigating to what extent and how listening comprehension was affected by students‘anxiety, which was considered to be one of the factors to which EFL/ESL teachers must pay attention. The author of the thesis used a questionnaire on trait anxiety and one on state anxiety to look into students‘anxiety levels exhibited in the listening part of the College English Band IV Test. 52 subjects from the Inner Mongolia (Polytechn:c) University of Technology were involved in the investigation. Data collected from the investigation were statistically analyzed using SPSS 10. 0. The research findings indicate that anxiety is a factor to affect the students’ listening performances, that means the reduction of trait anxiety levels may facilitate listening performances of the students. Visualization is a promising technique for treatment.     

美国联邦法院管辖的跨州管辖权案件研究

跨州问题管辖权案件联邦法院受理案件的基本类型,就跨州管辖权而言,存在完全的跨州管辖权理论和最低限度的跨州管辖权理论,跨州管辖权案件主要考虑当事人的不同州籍和诉讼金额的大小,在如何确定当事人的州籍和诉讼金额上存在不同的理论。