Economic analysis of the impact of adopting herd health control programs on smallholder dairy farms in Central Thailand

The economic impact of adopting herd health programs for mastitis and reproduction by small-scale dairy producers of Central Thailand was assessed using a policy analysis matrix (PAM). Following a reduction in the incidence of bovine disease on adopter farms, an increase in private net profits is observed. More importantly the social costs of supporting dairy farmers is reduced; the PAM effective protection coefficient was reduced by 35% for mastitis program adopters and by 44% for reproductive program adopters, indicating improved social efficiency of dairy policy. Other indicators of efficiency and policy implications are discussed.     

The Impact of Cannabis Use on Health

Summary Chronic daily cannabis use has been shown to have long term harmful health effects, which in turn is expected to reduce labour market productivity. The evidence is less clear on the health impact of less frequent consumption, which is the more typical mode of use, and previous empirical studies fail to find robust evidence of an adverse impact of these modes of use on labour market productivity. This paper attempts to shed some light on this issue by directly estimating the impact of cannabis consumption in the past week and past year on health status using information on prime age individuals living in Australia. We find that cannabis use does reduce self-assessed health status, with the effect of weekly use being of a similar magnitude as smoking cigarettes daily. Moreover, we find evidence of a dose-response relationship in the health impact of cannabis use, with annual use having roughly half the impact of weekly use.Helpful comments on an earlier draft were received from Jan van Ours, Rosalie Pacula, two anonymous referees and participants at the 81st Annual Conference of the Western Economic Association International.     

期转现是大宗商品期货交割的有效形式

期转现是当今世界商品期货交易中通行的一种大宗商品期货交割方式,是期货交易方式与现货交易方式最有效率的结合,是典型的非标准期货交割方式.本文着重论述了期转现的积极效应和实现条件.     

综合管理体系及其实施指南的研究

依据ISO9001、ISO14001及OHSAS18001标准，对企业中的质量、环境及职业安全卫生要素进行了系统的整合，提出了综合管理体系模式及实施指南。     

正确理解马克思劳动价值论的约束条件

文章从“问题域”、“概念”和“假设”三个层面分析了马克思劳动价值理论的约束条件,提出商品的价值与劳动力的价值的关系问题是马克思劳动价值论的深层结构,对于准确全面理解马克思劳动价值论具有指导意义。     

矿区生态系统健康评价理论与方法初探

总结国内外有关生态系统健康理论与评价方法的研究现状及最新成果,界定矿区生态系统健康的内涵,分析影响矿区生态系统健康的原因,论述矿区生态系统健康评价指标体系与评价方法。     

大学生心理疾病产生的原因及对策

21世纪将是心理疾病患者显著增加的年代,心理疾病将成为严重威胁人类和社会稳定的“世纪病”。心理病患者“自杀”的数字也令人吃惊。大学生是心理疾病发生率较多的群体,大学生心理疾病产生的原因是复杂多样的,既有遗传和生理因素,又有社会、学校、家庭及个体心理缺陷等因素。加强对大学生产生心理疾病的原因分析,有助于我们搞好大学生心理教育,帮助大学生增进心理健康。     

当代大学生心理健康教育与素质培养

21世纪充满着机遇与挑战。作为21世纪的大学生必须具备良好的心理素质,心理素质是一个人整体素质的基础和归宿,它渗透在各种素质之中,影响和制约着各种素质的形成和发展。大学生在同龄群体中较优秀的群体,一般大学生是具有较高的智力水平和较多的专业知识和技能。但由于多方面的原因,特别是由于社会对大学生的要求和期望也较同龄群体为高,因此,大学生没有良好的心理素质同样是无法适应这个时代的。而良好心理素质的养成是靠教育来实现的,大学生心理健康问题越来越受到人们的关注。加强大学生的心理社健康教育,已成为高校亟待解决的问题。     

肥胖对健康的危害及运动减肥

文章介绍了肥胖产生的原因及对人体健康的危害,并阐述了如何通过有效的体育运动进行减肥。     

M公司外部环境和优劣势研究

M公司所处的外部宏观环境、铝型材行业竞争态势及公司自身内部条件表明,M公司存在诸多威胁和有利条件,企业内部也具有自身的优劣势.这表明M公司只有进行品牌创建,实施品牌策略,才能在激烈的市场竞争中立于不败之地.