将分段函数表示为初等函数的方法

本文给出了一种化具有多个分段点，且在各区间段上的表达式为多项式函数的分段函数为初等函数的具体方法．     

Curved Chaotic Map Time Series Models and Their Stochastic Reversals

This paper considers two types of chaotic map time series models, including the well-known tent, logistic and binary-shift maps as special cases; these are called curved tent and curved binary families. Deterministic behaviour is investigated by invariant distributions, Lyapunov exponents, and by serial dependency. Stochastic time reversal of the families is shown to produce models which have a broader range of stochastic and chaotic properties than their deterministic counterparts. The marginal distributions may have concentrations and restricted supports and are shown to be a non-standard class of invariant distribution. Dependenc y is generally weaker with the reversed stochastic models. The work gives a broad statistical account of deterministic and stochastically reversed map models, such as are emerging in random number generation, communica tion systems and cryptography     

The Sandwich Generation: Dependency, Proximity, and Task Assistance Needs of Parents

This study was designed to determine the extent of sandwiched families and the impact of dependency and proximity to task assistance provided to parent(s). Data were collected in Idaho, Oregon, Utah, and Michigan from a random sample of 40–65-year-old respondents. Fifteen percent are sandwiched between needs of aging parents and financially dependent children. Respondents are much more likely to be providing assistance to mothers than fathers. Parents are most likely to live near, but not necessarily with, the respondent. Spouses and partners' parents, however, are likely to live farther away. Task assistance provided most often to aging parent(s) includes help with transportation and shopping; financial assistance was reported least often. Income of respondent and dependency and proximity of parents are significantly related to providing assistance to parents. This study offers a unique glimpse at the relationships between personal characteristics, dependency, proximity, and task assistance issues as they pertain to the sandwich generation.     

Countering Overseas Power in Global Value Chains: Information Asymmetries and Subcontracting in the Plastics Industry

Resource Dependency Theory (RDT) and Global Value Chain (GVC) analysis have been deployed in the strategic and international management literatures to address questions of power in dyadic relationships and global production networks, respectively. This paper integrates the two theoretical approaches in order to expand RDT, using insights from Hirschman's exit/voice model to show the options available to some firms but not others. Using the relationship between buyers and contract manufacturers from GVC analysis, we find a correlation between firm size and choice of strategic action in response to contract manufacturers' dependence on buyers. Large firms follow an acquiescence strategy while small manufacturers follow an avoidance strategy, able to use both exit and voice strategies. Enabled by scale or control over information, both of these approaches successfully reduce uncertainty and provide a source of sustained competitive advantage. Using a study of the production chain in consumer plastics manufacturing in China, we show how dependent firms respond to GVC induced pressure. We find that based on the size of the contract manufacturer, the range of strategic responses to power is constrained by the nature of the dependency in global value chains. This opens important insights into the role that structural characteristics of organizations (like size) play in determining strategic freedom.     

论我国量刑程序模式的选择

量刑程序与定罪程序一样是刑事审判环节,具有独立性与依附性特征,而我国立法层面的量刑程序几乎是空白。我国在现有的司法环境下实行相对独立的量刑程序符合国际司法潮流,这一程序也没有增加各诉讼参加人的负担,较易操作落实,且有相关的配套程序和实践基础,因此具有可行性。但在实践中应注意一些问题,如要清晰控辩审三方在量刑程序中的定位,使社会调查报告机制走向制度化、专业化,判决书中应对量刑的依据和理由进行阐述等。     

积极心理学视角下大学生心理健康教育实效性研究

积极心理学是当今时代下心理学界所兴起的一种全新的研究领域,并在一定程度上应用到了大学的心理健康教育当中,从而能够在一定程度上,增加教育的时效性。通过积极心理学的教学观念,将心理学视角下的健康教育深入大学生的日常教学当中,进而能够深入挖掘以及培养大学生的积极心理品质,全面优化大学生的心理教育的环境,进而用更加先进的积极心理学理念,指导并帮助大学生构建更加完善的心理观念。     

人口较少民族经济向现代经济转变的路径分析

在阐述路径依赖理论的基础上,结合人口较少民族经济的特点对人口较少民族经济向现代经济转变的路径进行了分析,提出要辩证地看待人口较少民族传统经济在这一转变中的影响和作用,认为人口较少民族实现经济转变的首要问题是打破经济封闭和信息封闭,在此基础上,将自身的特色优势与区域优势有效结合起来,将传统经济中的积极因素与现代经济因素有效结合起来,走因地制宜、循序渐进的转变路径。     

情景依赖对消费者品牌延伸评价的影响

品牌延伸是新产品入市的重要手段。文章从信息储存和使用的角度对品牌认知结构和情景依赖水平如何影响消费者的品牌延伸评价进行了研究,并探讨了不同沟通方式(关系型和阐释型)对不同情景依赖水平消费者品牌延伸评价的影响。研究发现:情景独立的消费者,相对于情景依赖的消费者会有更积极的品牌延伸评价和更好的品牌延伸匹配度感知;关系型沟通能使情景独立者产生更积极的品牌延伸评价和更好的品牌延伸匹配度感知;阐释型沟通能使情景依赖者产生更积极的品牌延伸评价和更好的品牌延伸匹配度感知。     

治理我国新一轮通货膨胀的财税政策

我国新一轮的通货膨胀不是商品供不应求的简单经济矛盾引起的,而是开放经济条件下的国内经济结构失衡和对外经济失衡导致的输入型通货膨胀.实施紧缩性货币政策虽然能暂时起到抑制投资过热、控制流动性过剩和通货膨胀的作用,并不能解决我国结构性失衡的深层经济矛盾.治理我国新一轮通货膨胀,不仅需要采取"从紧"控制总量的货币政策,更需要从解决我国经济结构性失衡的深层矛盾入手,采取"从优"调整结构的财税政策.     

萨提亚家庭治疗在高校心理咨询工作中的适用性

萨提亚家庭治疗模式具有以下一些特点,使得其在高校心理咨询工作中具有相当的适用性:辩证全面的系统观增加了学生改变的可能性;基本理念同中国传统文化相适应,易被接受;积极正向的导向符合高校育人目标;形式灵活多样方便开展工作。