Efficiency in overlapping generations economies with longevity choices and fair annuities

When individuals can influence their life-expectancies and save in annuities, suboptimal savings result from the lack of incentives to choose the optimal longevity, even when annuity returns can be made contingent to longevity-related choices. Specifically, the golden rule steady state maximizing the representative agent utility cannot be attained as a competitive equilibrium under laissez-faire, even with actuarially fair annuities contingent to longevity-enhancing choices. In order to decentralize through markets the golden rule, longevity-enhancing expenditures need to be taxed if the steady state old-age consumption exceeds the annuitized capital return, and subsidized otherwise—the government budget being balanced through lump-sum transfers or taxes. Interestingly, with positive population growth the expected net contribution is negative when longevity-enhancing expenditures are taxed, and positive when subsidized.     

羧甲基壳聚糖/海藻酸钠水凝胶pH值对溶胀行为的影响

以CaCl2为交联剂制备了一系列羧甲基壳聚糖/海藻酸钠水凝胶。研究了羧甲基壳聚糖与海藻酸钠溶液的配比、交联剂的用量以及pH值对水凝胶溶胀率的影响,并分析了不同pH值时水凝胶的红外谱图。结果表明,pH=1.0、3.0时,水凝胶收缩,而pH=5.0、7.4、9.0、13.0时,水凝胶溶胀随pH值增高,其溶胀率增大。当两者配比为1:3,pH 9.0时溶涨率最大。同时,红外谱图证明,水凝胶的pH敏感行为是氨基和羧基基团结构的变化所引起的。     

论法务会计的行为边界及其职业领域

确立法务会计行为边界具有十分重要的理论意义;法务会计的本质体现为一种专业会计行为;法务会计行为由法务会计判断、法务会计诉讼支持、法务会计鉴定三部分构成;依据法务会计行为内容界定法务会计的职业领域。     

Capital liquidity and residents’ consumption decision: An asymmetry analysis of economic prosperity

Among the current literatures that discuss the influence exerted on residents’ consumption behavior by capital liquidity, some often independently decide the demarcation point of the liquidity restriction that affects residents’ consumption behavior, without taking into account when the economy is flourishing whether residents will be influenced by the restriction of the liquidity that their consumption behaviors can not be fully carried out. We introduce a threshold model which varies according to the actual GDP and other financial indicators (money supply, average stock index and balance of bank loans) to discuss residents’ consumption behavior in China under different economic states. The empirical results show that when the economy flourishes or resuscitates, residents’ income of the same period have not notable influence on their consumption, which suggests that residents’ consumption behavior does not considerably change according to the fluctuation of the current income, but conforms with the constant income-life cycle hypothesis. Moreover, two estimated values 0.7504 and 0.8597, as economic boom measures, all fall in the boom stable stage—basically consists with the early-warning index of the macro-economy boom issued by National Bureau of Statistics of China. It shows that the macro-economic boom is not notablely influenced by capital liquidity, so is residents’ consumption behavior.     

有备无患：后续疫情中新冠焦虑对武汉员工防护和工作的影响研究

国内局部疫情陆续暴发,关注已有疫情经历的员工防护和工作行为对疫情防控有一定意义。基于资源保存理论,文章假设新冠焦虑对武汉员工防护行为和工作结果有显著影响,且对防护行为影响大于对工作结果的影响。在2021年初国内局部疫情期间,对52名武汉员工连续5天的调查发现,每日新冠焦虑通过每日新冠耗竭显著提升武汉员工新冠防护行为,但武汉员工每日工作产出不受疫情影响,包括工作绩效、创新绩效、工作导向和人际导向的帮助行为。文章揭示了有2020年新冠肺炎疫情直接经验的武汉员工对待后续疫情防护的谨慎态度,以及在工作结果方面对后续疫情的“抗干扰性”。结合当前情况,讨论了研究结果对疫情防控和经济恢复的实践意义。     

基于Moran过程的PPP项目承包商机会主义行为演化动态

在PPP项目中,由于政府部门和承包商的目标不一致以及信息不对称等原因的存在,使得在其全寿命周期过程中,承包商的机会主义行为屡见不鲜。本文基于随机演化博弈理论,建构基于Moran过程的博弈模型,旨在探讨推动PPP项目承包商不采取机会主义行为策略的有利条件。研究表明,承包商数目不断扩大,通过降低承包商之间的举报成本,增大惩处力度,可使降低机会主义行为发生概率的效果显著。进一步,借助数值算例,对研究结果进行验证并给出相应的管理对策。     

我国资产投资行为对企业竞争优势的影响——来自中国制造业上市公司的经验数据

企业是投资决策的最终制定者,理解企业投资行为十分必要.本文以沪深两市制造业2003-2005年的财务数据为基础,抽取了1870家样本公司,对投资行为与企业竞争优势之间的关系进行实证分析.发现滞后一期的固定资产投资和当期的企业竞争优势显著正相关,滞后一期和滞后二期的无形资产投资均与当期的企业竞争优势不显著.     

无网上购物经验的消费者橱窗购物行为——基于交易成本视角的实证研究

本文基于交易成本经济学理论,应用结构方程模型,对我国无网上购物经验的消费者的橱窗购物行为进行研究。研究结果表明,在我国,无网上购物经验的消费者的橱窗购物行为受交易成本的影响很大。研究同时表明,交易成本与不确定性、资产专用性和信任度密切相关。如果消费者信任倾向低,在面对高不确定性和高资产专用性时,会感受到较高的交易成本。而当消费者面对高可靠性和详细的隐私政策时,则倾向于在网上购物中加大投入成本。     

买方行为、社会网络与服务业的产业政策

服务业是一个经验品市场,买方互惠行为的缺失与锁定行为的存在都会促使卖方降低服务的质量,进而导致服务业市场萎缩,社会网络会进一步强化这种影响.我国服务业当前发展缓慢与这种买方行为引发的市场失灵不无关系.由于现有的产业政策普遍忽略了买方行为对服务业发展的影响,服务业产业政策的设计需要进行调整.     

基于消费行为的中国奢侈品市场研究

中国已成为世界第二大奢侈品消费国。本文首先介绍了奢侈品的发展概况,接着从中国目前奢侈品消费市场的调研出发。分析了中国奢侈品市场的消费行为特点,最后对中国奢侈品市场的未来进行了展望。