Partial International Coordination in the Great Fish War

This study extends the great fish war model of Levhari and Mirman [Levhari, D. and Mirman, L. (1980) Bell Journal of Economics 11: 322–344] by incorporating a multiple country context into the model and investigates the existence of a partial coordination Nash equilibrium. First, findings of this paper suggest that a partial coordination scheme is sustainable only in limited cases. Any coalition that has more than two member countries cannot be sustained. Second, the existence and the number of coordinating countries depend critically on the magnitude of the biological and preference parameters. Finally, if the coalition is assumed to be a dominant player, there always exist one or two welfare-improving sustainable coalitions and the size of the sustainable coalitions depends on the parameters of the problem.     

基于投入--占用--产出技术的自然资源乘数分析

本文在简要介绍投入—占用—产出系数表的基础上,给出了考虑固定资产占用的资源乘数计算公式。然后,以青岛市为例,研究了青岛市的海洋鱼类资源乘数。结果表明,1997年青岛市渔业部门的海洋鱼类资源乘数,考虑固定资产占用比不考虑固定资产占用有明显增加;考虑经济系统对生态系统的影响比仅考虑生态系统对经济系统投入时的资源乘数也有所增加;进一步考虑生态系统内部各成分之间的联系时,资源乘数又有所增加。     

超高效液相色谱-串联质谱法测定腌鱼中氟虫腈及其代谢物的残留

本文采用超高效液相色谱串联质谱法测定了腌鱼中氟虫腈及其代谢物氟虫腈砜、氟虫腈亚砜、氟甲腈。腌鱼样品经乙腈提取、盐析和吸附剂净化,以0.1%甲酸的甲醇溶液和0.1%甲酸的5 mmoL·L^-1乙酸铵溶液为淋洗液在BEH C18色谱柱梯度洗脱,电喷雾负离子多反应监测(Multiple Reaction Monitoring,MRM)模式检测。结果表明,氟虫腈及其代谢物在0.25～10.0 ng·mL^-1呈良好的线性关系,相关系数均大于0.999;在1.0～10.0μg·kg^-1添加范围内,氟虫腈及其代谢物的回收率为91.79%～109.84%,相对标准偏差为0.91%～3.39%(n=6);该方法检出限和定量限分别为0.2～0.4μg·kg^-1和0.8～1.2μg·kg^-1。本方法操作简单、灵敏,可同时测定腌鱼中氟虫腈及其代谢物的残留量,为其日常监管提供技术参考。     

Climate change adaptation actions by fish farmers: evidence from the Niger Delta Region of Nigeria

This paper examined climate change adaptation strategies in fish farming and the effect of such methods on the profit of fish farmers in the Niger Delta region of Nigeria, Africa’s most populous country. Using cross‐sectional data obtained from 420 fish farmers from the region and applying multivariate probit and instrumental variable regressions, the study found that fish farmers have adopted a broad range of strategies to address climate risk and that these have significantly increased farmers’ profit. Our findings indicated important relationships between certain farm, socio‐economic and institutional characteristics and the adaptation actions. The study provides useful insight into factors that potentially encourage the adoption of livelihood‐enhancing climate risk adaptation strategies by fish farmers in the Niger Delta region and similar contexts.     

基于社会化招聘成熟度模型的“投名状鱼塘”建设

F公司把社会化招聘作为树立最佳雇主品牌形象(EVP)以及建设员工价值体系(EVP)的重要途径,通过社会化招聘达到提升公司内外忠诚度的目的。本研究以中国背景下的外资企业F公司为例,探讨了复杂多变环境下F公司社会化招聘体系的建立以及建立过程中遇到的问题。     

企业实施逆向物流的关键因素分析

本文借助"鱼刺图"对企业成功实施逆向物流的关键因素展开分析,在分析的基础上提出了成功实施逆向物流的概率模型,该理论模型为今后研究逆向物流成功实施提供了理论框架。     

基于小波神经网络的鱼类价格预测研究

鱼类市场价格是影响渔民收益的重要因素,因此如何能够准确分析和预测鱼类的价格是一个十分重要的问题.论文在考虑了BP网络原形的一些缺点和不足,尝试在传统BP算法的基础上将网络神经元中的激励函数换成小波子函数,组建成的小波神经网络.通过对鲈鱼价格的预测,验证了小波神经网络的可行性,然后基于阿里巴巴的鲈鱼价格的历史数据,验证了该方法的合理性.最后开展对新疆乌伦古湖水产综合基地三类主要鱼类价格预测的实证研究,研究结果表明河鲈和梭鲈的价格会有小幅的波动,但高白鲑的价格会有大幅的提升.因此,小波神经网络作为一种传统神经网络的改进,可用于预测鱼类价格的短期预测,为水产基地的决策提供依据.     

Role of food neophilia in food market tourists’ motivational construct: The case of La Boqueria in Barcelona,Spain

In this paper we advocate the study of local food markets to explore fundamental issues about the relationship between these urban tourist attractions and visitors’ motivation and satisfaction. Based on a survey in La Boqueria Market in Barcelona, Spain, we test the direct effect of escape from routine, cultural experience, prestige, and food market involvement on satisfaction, and also the moderator role of food neophilia in this relationship. We conclude that tourists visiting food markets are motivated mainly by cultural experience and interaction with local producers, while food neophilia plays a significant moderator role.     

加快开发南方草地资源,促进生态经济建设

我国南方草地资源丰富,发展草业潜力极大。本文就南方草地的现状、类型及发展草业的途径进行了探讨。     

Aquaculture: an emerging issue for public concern

The present paper reviews the literature on the risks and benefits of aquaculture. By bringing together sources from both natural sciences and social sciences, we provide a synthesis of perspectives on the relatively novel activity of modern aquaculture. This review consists of three parts: first, a background to aquaculture; second, an overview of the scientific risks and benefits; and third, an introduction to the related public perception issues. We establish five main risk‐related areas: human health, environment, organizational, fish welfare, and social issues and utilize these to highlight potential divergences in expert and lay perceptions. Drawing on findings from the risk perception literature, particularly those related to previous food‐related controversies, it is argued that aquaculture incorporates a range of issues, which have already been shown to be a catalyst for public concern. As such, we conclude that, in addition to natural science studies, aquaculture requires a social science approach in order to be able to anticipate and address future controversies in a timely and efficient manner. However, to date, only few articles address aquaculture from a social science perspective, and the present paper is offered as a step in this direction.