A Stochastic Frontier Analysis of Output Level and Growth in Poland and Western Economies

This paper uses Bayesian stochastic frontier methods to measure the productivity gap between Poland and Western countries that existed before the beginning of the main Polish economic reform. Using data for 20 Western economies, Poland and Yugoslavia (1980–1990) we estimate a translog stochastic frontier and make inference about individual efficiencies. Following the methodology proposed in our earlier work, we also decompose output growth into technical, efficiency and input changes and examine patterns of growth in the period under consideration. This revised version was published online in July 2006 with corrections to the Cover Date.     

线路雷击故障统计分析

文章将对利用甘肃电力公司基层单位收集的雷击跳闸数据,通过数据统计分析的方法对雷击跳闸故障的特征及防雷措施的效果和风险评估展开研究。首先对雷击跳闸的逐年变化情况进行分析,然后分析雷击故障杆塔的地域分布、杆塔所处的地形地貌、绕击比重和雷击相次的特征以及进行重要输电线路的雷害风险分析。最后在建立雷击跳闸数据分析数学计算模型的基础上进行防雷措施运用效果定量评价分析。     

Proposals for a Minimum Programme for Statistics in Developing Countries

Statistical offices in developing countries are confronted with the challenge of introducing, with limited means, methods and tools ensuring the production of durable statistics satisfying regional, national and international requirements. Taking into account the evolution, over the last years, in the attitude of national authorities, funding partners and statisticians themselves regarding the building up of relevant and durable statistics, the present paper's proposal is to have, in each developing country, a Minimum Programme for Statistics (MPS) and that this programme be centred on four domains: coordination, national accounts, economic and social short term analysis, and dissemination.     

A Tale of Two Rigidities: Sticky Prices in a Sticky‐Information Environment

Macroeconomic models with microeconomic foundations allow for comparisons with macro and micro empirical evidence. This paper proposes a model wherein firms: (i) acquire information infrequently, generating sticky information ( Mankiw and Reis 2002 ) and (ii) face menu costs, producing state‐dependent sticky prices. I estimate parameters via indirect inference and show that under considerable real rigidity, sticky prices in a sticky‐information environment are consistent with micro and macro evidence. Sticky prices not only help match micro data on price changes’ size and durations between adjustments; they also improve the model's fit with the macro data, as embodied in an empirical Phillips curve.     

Inference Methods for Discretely Observed Continuous-Time Stochastic Volatility Models: A Commented Overview

In this paper an overview of inference methods for continuous-time stochastic volatility models observed at discrete times is presented. It includes estimation methods for both parametric and nonparametric models that are completely or partially observed in a variety of situations where the data might be nonlinear functions of the components of the model and/or contaminated with observation noise. In each case, the main reported methods are presented, making emphasis on underlying ideas, theoretical properties of the estimators (bias, consistency, efficient, etc.), and the viability of their implementation to solve actual problems in finance.     

2012年国土资源领域科技论文统计分析

以2012年被科学引文数据库(SCI)CD版、中国科学引文数据库(CSCD)扩展版和中国地质文献数据库(GDS)收录的国土资源部相关机构发表的科技论文为例(按第一作者的第一机构进行统计),采用文献计量学方法,对科技论文的产出、分布特点和影响力进行了统计分析,主要包括论文的数量变化、作者和机构分布、学科分布和期刊分布等,从一个侧面了解国土资源部相关机构2012年度科研状况.     

最优污染水平的数学解析与模式

针对环境经济学中最优污染水平概念模糊的问题，运用几何解析与逻辑推演方法，分析最优污染水平定性模式的病症所在，导出最优污染水平的充分条件和必要条件，并进一步运用导数和微分学理论证明了该充分条件和必要条件的正确性，从而创建了新的最优污染水平的定量模式。     

石林风景区土地利用现状格局初步研究

石林风景区是典型的喀斯特地貌区,也是多种自然因素和人文因素强烈作用的区域,利用ArcView软件,把该区划分为10种土地利用类型;以一系列土地利用格局指标,对该区土地利用现状格局进行定量分析并探讨其成因机制;选取乃古石林和大小石林景区进行空间统计分析,结果表明:土地利用现状格局呈明显的破碎现象,云南松林是景观的基质,乃古石林景区随空间幅度的扩大出现较明显的格局分异点,石林、石芽地一直是该区的主导土地类型,草地面积则呈线性增加。     

基于统计口径相机选择的宏观税负评价

宏观税负国际比较选择的口径是否合理、科学,决定着是否能够真实反映一国微观经济主体的总体负担水平。结合我国的现实情况,选择统计口径时应遵循真实性、可比性原则;坚持宏观税负口径的动态选择,通过财政收入制度的不断完善,实现“大口径”向“小口径”的稳步过渡;根据宏观税负国际比较的对象不同,应“因国制宜”,采用不同的统计口径,即与发达国家的宏观税负比较——以“大”比“小”,与发展中国家的宏观税负比较——以“中”比“中”。