国土资源数据整理入库方案设计

提出一种基于国土资源数据入库的方式,包括它的设计技术路线,整理方式以及涉及到的格式的转换,并在此基础上,探讨国土资源数据整理入库的设计思想。期望能够实现国土资源数据得到更进一步快速有效的管理。     

Demographic Shock and Social Security: A Political Economy Perspective

We assume that individual voters differ not only according to age but also productivity. In the steady state, workers with wages in the intermediate range join the retired persons to form a majority and vote for a positive level of social security. When a shock decreases population growth, entrenched interests can constrain majority voting decisions and prevent reforms in the name of entitlements. We show that from a Rawlsian viewpoint it may be desirable to rely on these entitlements to protect the low wage earners of the transition generations. However, when the possibility of fixing a basic pension is introduced, it constitutes a better instrument than entitlements.     

A Note on the Probability of Having a Strong Condorcet Winner

In an election, a strong Condorcet winner is a candidate who is top-ranked by more than 50% of the voters. The purpose of this note is to provide some algebraic representations for the probability of having a strong Condorcet winner in three-candidate elections. Three alternative procedures for generating voting situations are considered: the Impartial Culture condition, the Impartial Anonymous Culture condition and the Maximal Culture condition. It turns out that the conclusions we obtain strongly depend on the way for generating voting situations.     

Bayesian and Frequentist Inference for Ecological Inference: The R×C Case

In this paper we propose Bayesian and frequentist approaches to ecological inference, based on R × C contingency tables, including a covariate. The proposed Bayesian model extends the binomial-beta hierarchical model developed by K ing , R osen and T anner (1999) from the 2×2 case to the R × C case. As in the 2×2 case, the inferential procedure employs Markov chain Monte Carlo (MCMC) methods. As such, the resulting MCMC analysis is rich but computationally intensive. The frequentist approach, based on first moments rather than on the entire likelihood, provides quick inference via nonlinear least-squares, while retaining good frequentist properties. The two approaches are illustrated with simulated data, as well as with real data on voting patterns in Weimar Germany. In the final section of the paper we provide an overview of a range of alternative inferential approaches which trade-off computational intensity for statistical efficiency.     

Grain price stabilization in India: Evaluation of policy alternatives

Stabilization of prices is an important element of food policy in India as in most other countries — both developing and eveloped. However, since the magnitude of grain stocks held for this purpose as well as the costs of physical storage have become prohibitively high, there is now a need for finding cost-effective alternatives including non interventionist and market-oriented methods for price stabilization. In this paper we consider the case of rice and wheat which are staple foodgrains in India. We make a comparison between alternative price stabilization policies including that of holding buffer stocks in terms of their impact on domestic price stability, producer and consumer welfare and government costs. A multi-market equilibrium framework is used where private storage, consumption, supply and prices of rice and wheat are determined simultaneously. Indian exports and imports are assumed to affect world prices. The alternative price stabilizing mechanisms are ranked according to both the criteria, welfare and price stability achieved. The main findings are as follows. The ranking of alternatives varies with the criterion used. Greater price stability need not necessarily imply greater welfare. The option of variable levies on private external trade turns out to be the most inexpensive and that of domestic buffer stocks the costliest in achieving price stability. Further, the efficacy of buffer stocks and subsidy to private storage in stabilizing prices is lower under free trade as compared to the case where the economy is closed to private external trade.     

企业兼并——中国经济发展的必然选择

本文从资产重组的角度，以经济学理论为指导，论述了中国走企业兼并之路的必然性，揭示了实施企业兼并所面临的难题，并且有针对性地提出了消除企业兼并障碍的新见解。     

中国仓储业发展状况实证分析

本文通过对我国19省市现有仓储业发展概况统计数据进行研究,定量分析了我国仓储业企业规模、资本结构、营销能力、盈利状况、影响因素、区域性等六个方面,概括了我国仓储业整体发展状况,找出仓储业发展存在的一些问题,最后探讨解决办法.     

基于LabVIEW的微波网络分析仪功能扩展与自动测量

基于LabVIEW集成开发环境,通过GPIB接口建立了微波网络分析仪与PC机间的通信,并在PC机上开发了虚拟微波网络分析仪程序。该程序扩展了原仪器的测量通道,置换并升级了数据存储方式和类型,同时很方便地利用HP8510B网络分析仪实现了自动测量。     

储油罐的变位识别与罐容表标定研究

通常加油站都有若干个储存燃油的地下储油罐,并且一般都有与之配套的"油位计量管理系统",但是由于地基变形等原因,罐体会发生横向和纵向的偏斜。本文建立了数学模型对罐容量进行了重新标定。在小椭圆储油罐中,对油罐中油的形状进行了分类讨论。研究探讨了罐内储油量与油位高度及变位参数(纵向倾斜角度α和横向偏转角度β)之间的一般关系,通过模拟结果发现实验值与观察值的结果相关性很高(相关系数超过0.99)。     

On the Closeness Aspect of Three Voting Rules: Borda – Copeland – Maximin

This paper provides a comparison of three voting rules, the Borda rule, the Copeland rule and the maximin rule. Our analysis based on the rankings derived from those voting rules will shed new light on existing comparisons based on “closeness” between the three voting rules under investigation. In particular it will be shown that both, the rankings derived from the Borda rule and the maximin rule and the rankings derived from the Copeland rule and the maximin rule, will be exactly the opposite for certain preference profiles.