采用相位判决的低复杂度广义空间调制检测算法

针对广义空间调制（GSM）系统中信号检测复杂度过高的问题,提出了一种基于相位判决的低复杂度检测算法。首先根据一种排序准则对天线组合进行排序,然后将排序后的天线组合中的符号向量依次通过基于相位判决的迫零(ZF)均衡器进行检测,最终得到星座调制符号和激活天线组合。分析和仿真结果表明,该检测算法可以有效缩小接收端的搜索范围,在提供与最大似然（ML）检测算法相近的误比特率（BER）性能的同时,计算复杂度降低了98%。     

黑龙江省西部松嫩低平原盐碱地质灾害分布调查的思考

本文是在充分利用前人研究成果的基础上,运用多年积累的勘察资料和工作经验,投入1:250000区域地质调查、1:250000遥感地质解译、样品采集与化验分析等工作,运用遥感解译与地面调查相结合的方法科学合理的为黑龙江省西部松嫩低平原盐碱地质灾害分布及危害程度的进一步评价提供科学依据。     

基于Geortzel算法实现高效多路DTMF检测

基于戈泽尔算法,可得到一种DTMF检测的高效算法,本文描述了这种算法及使用该算法在TMS320S50上实现的30路DTMF检测器。     

汉英社会习俗对比刍议

在跨文化言语交际中 ,交际文化是交际得以顺利进行的一个重要因素。本文通过对汉英语言文化在社会习俗方面的对比来揭示汉英文化因素的差异。     

证券投资风险预测的E-Bayes估计

本文给出了E-Bayes方法,以上海证券个股五粮液52个连续交易日的收盘价格为例,建立数学模型进行分析和预测,预测结果与市场实际值相当吻合。与灰色系统理论中的GM（1,1）预测模型相比,本文提出的方法预测的精度更高,计算量小。不仅适用于经济系统的分析与预测,也适用于其它系统的分析与预测。     

生态税与低碳经济发展

低碳经济是生态文明建设的客观要求,也是实现人与自然和谐的必然选择。文章从当前生态环境面临市场和政府干预失灵难题的基础上,分析了发展生态税对发展低碳经济的意义,进而提出建立和完善生态税促进低碳经济发展的政策建议。     

Communication,Excess Comovement and Factor Structures

This paper develops a model in which investors communicate before trading in a general equilibrium. Investors repeatedly communicate in a social network but have limited knowledge of the network structure and thus do not fully realize the consequences of their communication and belief updating. As a result, asset returns contain excess comovement and more concentrated factor structures than fundamental values do. The model generates testable empirical predictions that are consistent with the empirical literature on excess comovement in asset returns.     

Supporting ALARP decision making by cost benefit analysis and multiattribute utility theory

Current guidance in the UK and elsewhere indicate upper and target risk limits for the operation of nuclear plant in terms of individual risk per annum. ‘As low as reasonably practicable’ (ALARP) arguments are used to justify the acceptance or rejection of policies that lead to risk changes between these limits. The suitability of cost‐benefit analysis (CBA) and multiattribute utility theory (MAUT) are assessed for performing ALARP (‘as low as reasonably possible’) assessments, in particular within the nuclear industry. Four problems stand out in current CBA applications to ALARP, concerning the determination of prices of safety gains or detriments, the valuation of group and individual risk, calculations using ‘disproportionality’, and the use of discounting to trade‐off risks through time. This last point has received less attention in the past but is important because of the growing interest in risk‐informed regulation in which policies extend over several timeframes and distribute the risk unevenly over these, or in policies that lead to a nonuniform risk within a single timeframe (such as maintenance policies). The problems associated with giving quantitative support to such decisions are discussed. It is argued that multiattribute utility methods (MAUT) provide an alternative methodology to CBA which enable the four problems described above to be addressed in a more satisfactory way. Through sensitivity analysis MAUT can address the perceptions of all stakeholder groups, facilitating constructive discussion and elucidating the key points of disagreement. It is also argued that by being explicitly subjective it provides an open, auditable and clear analysis in contrast to the illusory objectivity of CBA. CBA seeks to justify a decision by using a common basis for weights (prices), while MAUT recognizes that different parties may want to give different valuations. It then allows the analyst to explore the ways in which different parties might (or might not) come to the same conclusion even when weighting items differently.     

“低碳”条件下后发地区发展战略研究——以湖北省黄冈市为例

在“低碳”条件下，后发地区如何发展经济，造福一方百姓，是需要认真研究的现实问题。以湖北省黄冈市为例，提出四个转向：用“多元经济”取代单一工业发展模式；用“人口进城”取代单一GDP数字增长；用“项目招标”取代单一招商引资工作和用“就业创业”取代单一社会管理控制，用新的价值取向取代原有的社会运作模式。     

Discourse and practice of participatory flood risk management in Belfast,UK

The introduction of the Floods Directive signals a move from flood protection towards flood risk management in the European Union. Public participation is highlighted in the Floods Directive as being instrumental to effective implementation of this new approach. This study utilised document analysis, non-participant observation, a questionnaire survey, and interviews to evaluate the discourse and practice of participation in the implementation of the Floods Directive in Belfast, United Kingdom. Flood risk management processes in Belfast are found to be high on participatory rhetoric but low on meaningful engagement. The participatory process is lacking in transparency, does not encourage the active participation of interested parties and has not been clearly communicated to key publics. Opportunities to increase meaningful public participation in the process remain underutilised, and the establishment of local flood forums has provided little opportunity for meaningful engagement. Some actions of governance agencies could be best characterised as facilitating the responsibilisation of risk and are designed to manage risk to agencies rather than address flooding issues.