社会责任影响下研发创新与医药供应链协调决策

基于医药制造商和医疗机构同时关注消费者剩余视角,把研发创新和医保支付作为影响消费者效用的内生因素,刻画不同决策模型中社会责任对均衡结果的影响.研究表明:无论是医药供应链整体,还是医药制造商单独关注社会责任,都有利于提升研发创新能力;在非合作决策下,医药制造商积极履行社会责任可有效控制药品批发和零售价格,增加利益相关者的...     

基于效用最大化的PPP项目社会资本社会风险决策行为研究

本文基于期望效用理论构建了社会资本在面临PPP项目社会风险决策时的数学模型.文章将其决策行为分为正向行为和负向行为.通过计算分析得出社会资本的社会风险决策共存在四种情形,并且归纳出在完全由社会资本承担社会风险损失的情况下其必然会选择负向行为.对此,文章提出了四种情形下相应的补偿机制,通过该机制可确保社会资本采取正向行为,提升PPP项目社会效益.并进一步分析了折现率与PPP合同期长短分别对社会风险决策行为的不同影响.研究最终表明社会资本对长短期利益的重视程度是正负向决策行为选择的关键因素,"伙伴关系"与"风险合理分担"是促进正向行为选择的有效路径.     

试论社会转型期学生个体的社会化问题

由于当今社会处于政治、经济变革的转型时期,造成社会规范和价值观念的多元性和变动性,家庭、学校和大众传媒共同创造、供以模仿的榜样或权威形象遭到损害,对学生个体心理影响和行为约束力失去作用,很难转化为个体的信念和行为方式,使面临社会化发展任务的社会成员陷入前所未有的困境。因此,社会、学校及家庭共同努力建立有效的解决机制非常重要。     

快开式隔膜压滤机在煤泥水处理中的应用

通过和厢板压滤机的对比,介绍了快开式隔膜压虑机的主要技术特点;通过在试验过程中和加压过滤机对比,展现了快开式隔膜压虑机优异的性能,说明了应用快开式隔膜压虑机对煤泥水系统进行改造后良好的经济效益和社会效益.     

Nest architecture in polydomous grass-cutting ants (Acromyrmex balzani)

Acromyrmex balzani is a grass-cutting ant species frequently found in Cerrado areas. However, little is known about the architecture of the polydomous nests of this ant. Fifteen A. balzani nests located in a cerrado region in Botucatu, São Paulo, Brazil, were studied. The polydomous nests were studied in three ways. First, we investigated the architecture in nests moulded with cement and without moulding. Second, we performed an aggressiveness test among workers in different subnests and nests. Third, we excavated the nest and collected the colony to measure the population, verifying the existence or not of a queen in all nests. A cement mould was made of seven nests to permit better visualization of internal structures such as chambers and tunnels. Eight nests were excavated without moulding and white neutral talc was used to highlight the parts of the nests. After excavation, the depth and dimensions (length, width and height) of the chambers were measured. The results showed that the nests had a single entrance hole whose structure consisted of straw and other plant residues in winter. Mounds of loose soil, if present, were found 6–48 cm from the hole. The number of chambers containing fungus ranged from one to five, with the first being found a few centimetres beneath the ground surface (4 cm) and the last up to a maximum depth of 160 cm. The length of the tunnels ranged from 12 to 28 cm. These tunnels were built in a vertical or inclined position, leading to the chambers. No waste chambers were found, with the waste being deposited externally. Additionally, the polydomous nests contained one to eight subnests. In the aggressiveness test, when concolonial workers were confronted, no aggressiveness was observed. In contrast, when allocolonial workers were confronted, there was a high incidence of aggression among them. Excavation of polydomous nests showed only one queen for each polydomous nest, i.e. subnests with a single queen. Our study contributes to a better understanding of the so far unknown nest architecture of the polydomous grass-cutting ant A. balzani.     

纵向兼并的效应分析

采取对策论与微分技术在一般性假设下分析了纵向一体化的动机及其外部性。结果表明：（1）下游企业不仅存在主动兼并动机,而且还存在为降低其他企业纵向兼并对自身的负的外部性而进行的被动兼并动机;（2）不进行纵向市场圈定时的纵向兼并是促进市场竞争的,而当兼并后企业进行纵向市场圈定时,纵向兼并则会弱化市场竞争;（3）纵向兼并将导致上游企业利润增加;（4）参与兼并的下游企业效率越高,纵向兼并越可能是促进社会福利的。     

社会中间层建设与活动机制网研究

中国社会转型期,社会矛盾和冲突常态化,如何发挥社会中间层的作用,并形成长效化机制,成为社会面临的需要迫切解决的问题。立足中国社会转型的历史背景,运用网络分析的研究方法和途径,探讨社会中间层活动机制网的建构及运行。     

民族地区绿色物流发展对策研究

要加快我国民族地区发展,应不断探索适合民族地区经济、社会与人口资源环境相协调的开发模式.绿色物流业应该成为民族地区经济发展的优先选择.在分析了民族地区绿色物流的发展现状及差距的基础上,从社会物流和企业物流两个方面提出促进民族地区绿色物流发展的具体对策.     

基于重复博弈的集群企业间社会关系构建分析

针对我国外生模式及混合内生模式集群中核心企业与依附企业间的主从支配关系,将核心企业与依附企业间的社会关系收益进行量化,讨论了核心企业与依附企业间的社会关系构建及维持的影响因素及内在机制.研究表明,核心企业与依附企业间的社会关系构建与维持取决于核心企业对双方社会关系价值的预期以及依附企业的市场价格;核心企业依据依附企业的市场价格来分割双方的社会关系收益;而依附企业可以通过提高自身的价值,获取更高的社会关系收益分割值,缔结和维持有利于自身和集群成长的社会关系.     

空巢老年人社会支持与心理健康的相关研究

以宁波市266名老年人为被试,采用《老年心理状况调查表》和《社会支持评定量表》考察空巢老年人的社会支持和心理健康现状及其相关关系,结果发现,空巢老年人的心理健康水平显著低于北京市普通老年人常模;空巢老年人获得的社会支持明显低于非空巢老年人;对社会支持的利用度也低于非空巢老年人,但未达到显著水平;宁波空巢老年人的社会支持与心理健康具有显著正相关。所以,应该设法提高空巢老年人的社会支持水平,以促进空巢老年人的心理健康。