基于分辨力增益的综合识别传感器管理方法

为提高目标综合识别的效能,需对综合识别系统中多种传感器资源进行科学管 理。在分析综合识别中目标优先级和传感器使用约束条件的基础上,建立了利用分辨力增益 作为传感器资源管理优化准则的目标函数,提出了利用传感器混淆矩阵的预测分辨力增益计 算方法,并将粒子群优化算法引入传感器-目标分配NP-hard问题的求解中。仿真结果表明该 方法合理高效。     

综合敌我识别方法研究

针对协作式二次雷达敌我识别只能识别“我 方”,不能唯一地确认“敌方”的不足,提出基于协作式敌我识别器和信号情报的综合敌我识别方法,能较好地提供全局性的“敌方”、“我方”和“中立方”信息。介绍了系统组成,描述了系统工作过程,指出了需要进一步研究的技术。     

科学推进我国农村土地整治的策略探索

农村土地整治是新时期我国推动农村社会经济发展的一个重要手段,客观地深入农村土地整治的实质,对于确保农村土地整治工作的顺利开展具有重大意义。在认识我国农村土地整治工作战略意义和基本内涵的基础上,提出了科学推进我国农村土地整治的一系列对策措施,主要包括坚持"政府主导、国土搭台、部门联动、聚合资金、整体推进"的工作机制,尽快完成由传统土地单一开发、整理、复垦项目向综合整治的理念转变,因地制宜、量力而行,规划先行、统筹布局,示范带动、公众参与、充分发挥农民的主人翁作用。     

海洋综合执法模式的比较研究

海洋综合执法是克服海洋分散执法弊端的必然选择,目前我国海洋综合执法模式可以分为多元联合执法模式、一元统一执法模式和多元一体化执法模式,这三种模式在内涵和运行机制上都有显著区别,也各具自身的优势和不足,通过比较分析,可以为我们全面掌握海洋综合执法模式,以及在执法中如何选择海洋综合执法模式提供有益参考。     

海洋经济对国民经济的影响机制研究

本研究引入VAR模型,运用协整检验、因果检验及脉冲响应和方差分析的动态模拟手段实证分析1985～2008年我国海洋经济增长对国民经济的影响机制。结果表明：海洋经济增长能够促进后期国民经济增长,对国民经济的冲击表现出即期和延期效应,增长弹性呈先增后减的规律;海洋经济对沿海地区经济增长效果起效快,影响强劲,国民经济对海洋经济预测方差的作用贡献率不断提高,且沿海地区远高于全国。     

论矿产资源、资产、资本一体化管理新机制

随着国际矿业市场的发展,矿业国际垄断资本急剧壮大,一方面扭曲了国际矿产品价格决定机制,导致矿产品价格高居不下;另一方面国际矿业资本逐步进入我国的矿业开发利用进程中,给我国矿业发展带来挑战.同时,国内的矿产资源管理面临着矿政管理视野偏窄、矿业经济转型迟缓、资源产权建设薄弱、矿业资本市场缺位等方面的问题.为有效应对国际矿业市场的新变化和破解国内矿政管理的难题,应构建矿产资源、资产、资本一体化管理新机制,成立国家自然资源委员会,建立以产权管理为核心、以储量管理为基础的矿产资源、资产、资本一体化管理的制度框架,从而提升矿业市场竞争力,促进矿业可持续发展.     

短期融资券市场效率研究——基于价差分解的视角

在完全有效市场条件下,信用风险是反映信用类债券特征的最基本信息,也是决定价差的关键因素。本文通过对中国信用类债券中短期融资券的价差分解发现,虽然信用风险显著影响短期融资券定价,但市场风险才是影响其价差的最主要因素。此外,市场流动性不足降低了市场运行效率,导致流动性溢价总体为负。上述研究结果表明我国短期融资券市场化的定价机制虽已初步形成,但市场效率总体仍然偏低。     

Inflation in New EU Member States: A Domestically or Externally Driven Phenomenon?

This article empirically analyzes the domestic and external inflation determinants for eight non-eurozone new EU member states (NMS), using a structural vector autoregression model. Results indicate that foreign shocks are a major factor in explaining inflation dynamics in the medium run, while the short-run inflation dynamics are mainly influenced by domestic shocks. Moreover, the importance of the foreign inflation component has had a rising trend in the precrisis period in all NMS and mostly coincided with their accession to the EU. This trend ended with the onset of the global financial crisis. The study implicates the need to augment the classical Taylor rule with foreign factors in the case of small open economies.     

Asymptotics for Autocovariances and Integrated Periodograms for Linear Processes Observed at Lower Frequencies

One of the most frequently used class of processes in time series analysis is the one of linear processes. For many statistical quantities, among them sample autocovariances and sample autocorrelations, central limit theorems are available in the literature. We investigate classical linear processes under a nonstandard observation pattern; namely, we assume that we are only able to observe the linear process at a lower frequency. It is shown that such observation pattern destroys the linear structure of the observations and leads to substantially different asymptotic results for standard statistical quantities. Central limit theorems are given for sample autocovariances and sample autocorrelations as well as more general integrated periodograms and ratio statistics. Moreover, for specific autoregressive processes, the possibilities to estimate the parameters of the underlying autoregression from lower frequency observations are addressed. Finally, we suggest for autoregressions of order 2 a valid bootstrap procedure. A small simulation study demonstrates the performance of the bootstrap proposal for finite sample size.     

On the welfare costs of business-cycle fluctuations and economic-growth variation in the 20th century and beyond

The main objective of this paper is to propose a novel setup that allows estimating separately the welfare costs of the uncertainty stemming from business-cycle fluctuations and from economic-growth variation, when the two types of shocks associated with them (respectively, transitory and permanent shocks) hit consumption simultaneously. Separating these welfare costs requires dealing with degenerate bivariate distributions. Levi's Continuity Theorem and the Disintegration Theorem allow us to adequately define the one-dimensional limiting marginal distributions. Under Normality, we show that the parameters of the original marginal distributions are not affected, providing the means for calculating separately the welfare costs of business-cycle fluctuations and of economic-growth variation.Our empirical results show that, if we consider only transitory shocks, the welfare cost of business cycles is much smaller than previously thought. Indeed, we found it to be negative – −0.03% of per-capita consumption! On the other hand, we found that the welfare cost of economic-growth variation is relatively large. Our estimate for reasonable preference-parameter values shows that it is 0.71% of consumption – US$ 208.98 per person, per year.