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持续约束下基于模糊性的最优消费和投资组合研究
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作者 吕会影 李钰 《兰州文理学院学报(自然科学版)》 2023年第5期23-29,共7页
为研究最优消费和投资组合问题,采取具有可持续性约束和模糊性程度具有鲁棒性的模型,分别探讨了具有模糊性的标准无约束模型、算术持续约束模型、几何持续约束模型和福利损失.结果发现,模糊性对风险投资的影响有两个方面:当无风险利率... 为研究最优消费和投资组合问题,采取具有可持续性约束和模糊性程度具有鲁棒性的模型,分别探讨了具有模糊性的标准无约束模型、算术持续约束模型、几何持续约束模型和福利损失.结果发现,模糊性对风险投资的影响有两个方面:当无风险利率小于临界值时投资者更倾向于冒险;而当无风险利率大于临界值时投资者倾向于去风险,并且在约束下模糊性减少消费的程度更大,模糊性增大会导致福利损失更大. 展开更多
关键词 消费和投资 最优 模糊性 持续约束
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分时段人性化保护性约束在重症监护室患者非计划性拔管中的影响 被引量:2
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作者 李茜 梁建爱 罗丽秋 《吉林医学》 CAS 2020年第6期1529-1530,共2页
目的:探讨分时段人性化保护性约束对重症监护室患者非计划性拔管的影响。方法:选取重症监护室需插管的患者80例为研究对象,随机分为观察组与对照组各40例。对照组在患者插管期间实施持续性约束方式,观察组在患者插管期间则采用分时段人... 目的:探讨分时段人性化保护性约束对重症监护室患者非计划性拔管的影响。方法:选取重症监护室需插管的患者80例为研究对象,随机分为观察组与对照组各40例。对照组在患者插管期间实施持续性约束方式,观察组在患者插管期间则采用分时段人性化保护性约束,观察两组非计划性拔管的发生率、心理状态、治疗依从性及不良事件发生率。结果:干预后,观察组非计划拔管发生率略高于对照组,但差异无统计学意义(P>0.05);两组抑郁自评量表(SDS)、焦虑自评量表(SAS)评分均高于干预前,且观察组低于对照组,差异有统计学意义(P<0.05);观察组依从性高于对照组,不良事件发生率低于对照组,差异有统计学意义(P<0.05)。结论:分时段人性化保护性约束不仅能防止非计划性拔管的发生,且能降低焦虑、抑郁等不良情绪,提升患者依从性,降低约束不良事件的发生率。值得推广。 展开更多
关键词 分时段人性化保护性约束 非计划性拔管 持续约束 重症监护室
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建立健全社会保障机制的探讨 被引量:1
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作者 邱泰如 《财政监督》 2018年第15期72-76,共5页
完善我国社会保障的基本民生保障机制,需要进一步认清收入分配公平首先应保障民生基本需求,实施全民参加社会保险计划,合理确定和调整社会保险待遇,完善最低生活保障、社会救助、社会福利、优抚安置等制度。与此同时,要建立健全社会保... 完善我国社会保障的基本民生保障机制,需要进一步认清收入分配公平首先应保障民生基本需求,实施全民参加社会保险计划,合理确定和调整社会保险待遇,完善最低生活保障、社会救助、社会福利、优抚安置等制度。与此同时,要建立健全社会保障的激励约束(相容)和可持续机制。为此,要做到社会保障权责清晰与保障适度、实现社会保险基金精算平衡,还应发展社会保险外的其他养老和医疗保险。 展开更多
关键词 社会保障 基本民生保障机制 激励约束和可持续机制
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Issues of Agricultural Sustainable Development in Environment with Limited Resources——A Case Study of Xinjiang
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作者 段强华 周耀治 +2 位作者 师庆东 于法稳 吴得意 《Agricultural Science & Technology》 CAS 2012年第12期2610-2614,共5页
Based on natural resources in Xinjiang, some problems existing in agricul- tural sustainable development in Xinjiang were explored, such as simple agricultural structure (unbalanced development in different regions)... Based on natural resources in Xinjiang, some problems existing in agricul- tural sustainable development in Xinjiang were explored, such as simple agricultural structure (unbalanced development in different regions), dispersed production pattern, and lower efficient water use for agriculture. Furthermore, some countermeasures for Xinjiang agricultural sustainable development were proposed as well, including ad- justment of agricultural structure for optimization of resource allocation, strict control of population for improvement of people education, strengthening of S&T innovation for popularization of sustainable development, and construction of macro-adjustment mechanism of resources use for virtuous environment. 展开更多
关键词 Xinjiang agriculture Sustainable development Resource restraint in Environment
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新秩序,还是老制度——《制度、战略约束和美国战后秩序的持续》评介 被引量:3
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作者 慕建峰 《美国研究》 CSSCI 北大核心 2002年第1期135-143,共9页
关键词 内涵 书评 《制度、战略约束和美国战后秩序的持续
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Small Claims Court in Environmental Disputes Resolution to Support the Realization of Sustainable Development
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作者 Efa Laela Fakhriah 《Sociology Study》 2013年第8期588-595,共8页
An appropriate business dispute resolution will ensure that the parties involved would not have to spend too much time and cost to resolve their case. There are two ways to resolve business disputes, through litigatio... An appropriate business dispute resolution will ensure that the parties involved would not have to spend too much time and cost to resolve their case. There are two ways to resolve business disputes, through litigation and non-litigation process. The non-litigation process mainly depends upon the agreement of the parties involved and does not have a formally binding force upon them. Although the non-litigation process is more preferred in resolving business disputes, sometimes it does not completely resolve the issue. A specific business dispute resolution procedure such as the mechanism of small claims court (an informal court) is required. The objectives of the small claims court are to settle cases in prompt and cost-effective manner, and to avoid lengthy and complex formal legal procedures. Although it is still a part of the litigation process, the small claims court applies simplified procedures that are different from those of conventional civil cases. Nonetheless, the judgment of the small claims court has the same legally binding force as that of general court. The small claims court is situated in the District Court, but the examination of cases is different from general procedures and until now the mechanism has not been widely known in Indonesia. 展开更多
关键词 Small claims court dispute resolution
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可持续发展下企业环境成本内部化决策 被引量:3
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作者 安志蓉 丁慧平 +1 位作者 刘倩 何明凤 《江西社会科学》 CSSCI 北大核心 2014年第4期44-50,共7页
面对我国日益严峻的环境污染,除了政府加大环境管制和治理投入外,企业也必须积极承担治理污染和保护环境的社会责任。从识别环境可持续约束条件入手,构建基于环境可持续约束的企业环境成本内部化投资决策的非线性规划模型,研究和分析企... 面对我国日益严峻的环境污染,除了政府加大环境管制和治理投入外,企业也必须积极承担治理污染和保护环境的社会责任。从识别环境可持续约束条件入手,构建基于环境可持续约束的企业环境成本内部化投资决策的非线性规划模型,研究和分析企业如何进行环保产品定价决策、最优产销量决策以及政府如何给予企业环保补贴政策,有助于推动企业承担环境成本、减少政府环境治理支出、促进环保产品的市场化,以实现可持续发展。 展开更多
关键词 环境成本内部化 环保投资 环境容量 持续发展约束
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Planning for space station long-duration orbital mission under multi-constraints 被引量:5
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作者 LIN KunPeng LUO YaZhong +1 位作者 ZHANG Jin TANG GuoJin 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第5期1075-1085,共11页
An integrated nonlinear planning(NLP) model is built for space station long-duration orbital missions considering both the vehicle visiting schedules and the interaction effects between target phasing,vehicle return a... An integrated nonlinear planning(NLP) model is built for space station long-duration orbital missions considering both the vehicle visiting schedules and the interaction effects between target phasing,vehicle return adjusting and Earth observation aiming.A two-level optimization approach is proposed to solve this complicated problem.The up-level problem employs the launch times of visiting vehicles as design variables,considers the constraints of crew rotations,resource resupplies and rendezvous launch windows,and is solved by a genetic algorithm.The low-level problems employ the maneuver impulses and burn times within each orbital mission as design variables,and a high-efficient shooting iteration method is proposed based on an analytical equation for the phase angle correction considering the J 2 perturbation.The results indicate that the integrated NLP model for space station long-duration orbital missions is effective,and the proposed optimization approach can obtain the optimal solutions that satisfy the multiple constraints and reduce the total propellant consumption. 展开更多
关键词 space station orbital mission target phasing vehicle return Earth observation J2 perturbation
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Green Economy, Green Capitalism and the Imperial Mode of Living: Limits to a Prominent Strategy, Contours of a Possible New Capitalist Formation
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作者 Ulrich Brand 《Fudan Journal of the Humanities and Social Sciences》 2016年第1期107-121,共15页
Since some years, the strategy of a Green Economy as a current form of ecological modernization was proposed. The paper highlights the core issues of the concept and its structural constraints. Several constraints of ... Since some years, the strategy of a Green Economy as a current form of ecological modernization was proposed. The paper highlights the core issues of the concept and its structural constraints. Several constraints of a far-reaching realization of a Green Economy are presented, and one constraint is highlighted, i.e., the imperial mode of (production and) living. The latter gives emphasis to the continuous and largely unquestioned access to products produced by cheap labor and under environmentally problematic conditions. This mode of living, the paper argues, is also attractive among the upper and middle classed in countries with emerging economies like China. Moreover, it compares it with the concept of sustainable development which emerged some 15 years ago. Like sustainable development, proposals for a Green Economy might become "a tranquilizing dis- positive" in order to silence doubt and criticisms. However, it is argued that, despite the improbability of realizing the ambitious objectives, the Green Economy strategy might contribute to further capitalist development. Environmental issues might be integrated into the mode of production and living. However, given capitalist and imperial structures and dynamics, this will occur in highly selective and partial ways. The author calls this emerging constellation and possible new mode of development in some countries or regions of the world Green Capitalism. 展开更多
关键词 Green economy · Green capitalism · Imperial mode of living · Societal nature relations · Marxism
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