关于天然气组成分析比对工作的探讨

2006年中国石油股份公司勘探与生产分公司组织相关实验室对管输天然气样品进行了组成分析比对工作。对本次比对工作的建立和运作进行了总结,并介绍了组成分析比对工作的概况,总结了比对分析统计结果。本次比对工作的开展,对促进参加实验室天然气组成分析水平的提高起到了积极地推动作用,其结论和建议对今后进行天然气组成比对分析工作具有一定的参考意义。     

中国农村劳动力外流对留守家庭成员时间分配的影响

农村劳动力的大量外流,对于家庭留守成员的时间分配会产生什么样的影响?运用1997-2006年中国营养与健康调查数据,本文研究了成年人出外打工对妻子、儿童和老年人家务和农业劳动时间利用的影响.研究发现:丈夫出外打工显著地增加了妻子的农业劳动时间;父亲出外打工对于儿童家务劳动有显著的增加作用,并且对女孩的影响比男孩大;有成员出外打工的家庭,老年男性和女性在农业劳动中的时间投入都显著增加,家务劳动方面,老年女性受到的影响更大一些.     

中国期货市场的发展历程与背景分析

期货市场既不能超越经济发展的阶段,也不能长时间滞后于经济的发展。中国期货市场的发展是市场经济发展的必然要求,和经济体制的变革、演变密切相关。本文力图从中国期货市场发展的历史角度,解释中国期货市场变迁的经济背景。     

Optimal growth and impatience: A phase diagram analysis

When the time preference exhibits decreasing marginal impatience, the rate at which the discount function decreases plays a central role in the stability analysis. This paper shows that if the discount function is strictly decreasing, strictly convex and has a uniform bound on its first derivative, then the continuous-time, one-sector optimal growth problem has a unique steady state that exhibits the saddle-point property. Moreover, the phase diagram analysis is geometrically similar to the case of a constant discount rate. The proposed bounded slope assumption is inspired by and in direct contrast with Magill and Nishimura's "division of countries" example.     

基于自适应控制的区域生态经济协调发展构想

借鉴自适应控制理论的基本思想,建立了包括区域生态经济系统、协调发展评价系统、决策机构及调节系统4大基本要素组成的区域生态经济协调发展总体框架,它具有反馈作用,能根据区域生态经济系统的实际情况自动调节和控制其协调状况,并就此提出了区域生态经济管理的新理念,最后给出相应的建议。     

现代职业经理人能力特征分析

现代企业处在一个变化迅速、竞争激烈的环境中,雇佣职业经理人来扮演公司经营者这一角色,是现代公司经营管理的一个重要发展趋势。职业经理人产生的历史背景及其发展历程,决定了职业经理人是企业雇员中的重要群体,其所应具备的能力特征主要有：以诚实信用为核心的能力素质,以卓越的管理才能为核心的专业素质以及以决策能力为核心的综合能力素质等。     

地方财政困难的制度原因与对策

地方财政是国家财政的基础,地方财政的稳固是国家财政稳固的前提条件。目前我国地方财政收支矛盾尖锐,运转艰难。本文在考察我国地方财政现状,并对地方财政困难产生的制度原因予以分析的基础上,提出了解决地方财政困难的对策和思路。     

Personalized goal-based investing via multi-stage stochastic goal programming

In this paper, we propose a goal-based investment model that is suitable for personalized wealth management. The model only requires a few intuitive inputs such as size of wealth, investment amount, and consumption goals from individual investors. In particular, a priority level can be assigned to each consumption goal and the model provides a holistic solution based on a sequential approach starting with the highest priority. This allows strict prioritization by maximizing the probability of achieving higher priority goals that are not affected by goals with lower priorities. Furthermore, the proposed model is formulated as a linear program that efficiently finds the optimal financial plan. With its simplicity, flexibility, and computational efficiency, the proposed goal-based investment model provides a new framework for automated investment management services.     

Institutional Monitoring: Evidence from the F‐Score

The extant literature shows that institutional investors engage in corporate governance to enhance a firm's long‐term value. Measuring firm performance using the F‐Score, we examine the persistent monitoring role of institutional investors and identify the financial aspects of a firm that institutional monitoring improves. We find strong evidence that long‐term institutions with large shareholdings consistently improve a firm's F‐Score and that such activity occurs primarily through the enhancement of the firm's operating efficiency. Other institutions reduce a firm's F‐Score. Moreover, we find evidence that, while monitoring institutions improve a firm's financial health, transient (followed by non‐transient) institutions trade on this information.