促进城乡义务教育均等化的国际经验及启示

当前我国义务教育处于非均衡发展状态,不同区域之间、城乡之间、群体之间仍旧存在义务教育的失衡,甚至同一地区的校际间也存在比较突出的差异。促进城乡义务教育的均等化不仅是教育发展规律的内在要求,也是落实人才强国战略的现实路径。从国际经验来看,日本、南非、美国和英国等国家根据区域和城乡义务教育发展差距,规定了具有区别性的标准体系,并以此为基础对落后地区实施倾斜性投入政策,促使城乡义务教育总体上趋于均等化发展态势。剖析这些国家的发展经验,对于我国形成惠及全民的公平教育、建设和谐社会具有十分重要的意义。     

采用改进型AlexNet的辐射源目标个体识别方法

针对辐射源目标精确识别需求,结合以深度学习为代表的机器学习理论技术,提出将改进型AlexNet作为特征提取器,实现目标细微特征提取固化,形成智能化识别网络模型。以广播式自动相关监视（ADS-B）信号为实验对象,在机场实地采集了13个目标的ADS-B脉冲信号数据作为辐射源目标个体识别的训练和测试样本,利用AlexNet和改进的AlexNet验证了算法的有效性。结果表明,改进的AlexNet网络训练时间更快,综合识别率达到98.32%.     

To thine own self be true: Images of self,images of opportunity,and entrepreneurial action

While research in entrepreneurship continues to increase general understanding of the opportunity-recognition process, questions about its nature nonetheless persist. In this study, we seek to complement recent research that relates “the self” to the opportunity-recognition process by deepening understanding of the self vis-à-vis this process. We do this by drawing on the self-representation literature and the decision-making literature to introduce two distinct types of images of self: images of vulnerability and images of capability. In a study of 1936 decisions about hypothetical entrepreneurial opportunities made by 121 executives of technology firms, we then investigate how both types of images of self affect the images of opportunities that underlie opportunity recognition. Our results indicate that both images of self – vulnerability and capability – impact one's images of opportunity.     

压缩感知测量方法的机密性

分析了压缩感知（CS）的安全性问题,讨论了在攻击者不知道测量矩阵情况下是否 可以有效对信号进行重构的问题,论证了压缩感知可以达到保密性但达不到完善的保密性 。最后联合信道容量和速率失真函数,讨论了压缩感知恢复信号所需测量数据量的下限,并 分析了测量噪声对信号重构性能的影响。     

白城市雨洪资源利用经济社会效益研究

在建立雨洪资源利用经济社会效益指标体系的基础上,以白城市为例,识别和构建其雨洪资源利用经济社会效益体系;利用可变模糊识别模型对其进行效益评估,分析比较白城市雨洪资源利用年前后经济社会发展趋势,为今后雨洪利用和发展提供借鉴。     

论环境会计要素确认、计量与披露

环境会计要素就是对环境会计对象的进一步分类,而环境会计信息披露则是环境会计最主要的基本问题。因此,对环境会计要素核算及对环境会计信息披露问题的研究具有重要的现实意义。     

基于遥测数据的变电站故障分析应用

针对某电力公司进行的变电站更换的工程,发现上传调度中心遥测数据异常、进出站不平衡的现象,通过对遥测数据进行采集、分析,及时排除故障,使系统恢复正常的典型实例。同时分析了相同故障的综合解决办法及防范措施。理论分析与计算验证了利用遥测数据分析运行故障的可行性,其结果为进一步潮流分析之外的应用提供了借鉴和参考。     

井下中央泵房排水系统设计

以PLC S7-300为控制核心的井下泵房排水系统,可自动启停水泵根据水位和其他参数的变化.为了更好地达到节能和水泵均匀使用,分别设计了避峰就谷、自动轮换等优化措施,具有故障检测和保护功能.利用组态软件WinCC远程监控,实时显示泵站的运行状况,进一步提高了生产效率,达到降本减耗.     

模式识别课程教学的探索与实践

模式识别课程是模式识别与智能系统专业的基础课程.提高模式识别课程教学效果要注重教材选择,采取基于问题的教学方法,充分利用各种现代教学资源,重视教师的主导作用,加强实践教学环节.     

Misclassifications in financial risk tolerance

This paper analyses the empirical risk tolerance of individuals and the role of physiological measures of risk perception. By using a test that mimics the financial decision process in a laboratory setting (N?=?445), we obtained an ex-post empirical measure of individual risk tolerance. Predictive classification models allow us to evaluate the accuracy of two alternative risk-tolerance forecasting methods: a self-report questionnaire and a psycho-physiological experiment. We find that accuracy of self-assessments is low and that misclassifications resulting from questionnaires vary from 36 to 65%: individuals asked to self-evaluate their risk tolerance reveal a high probability of failing their judgement, i.e. they behave as risk takers, even if, before the task, they define themselves as risk averse (and vice versa). Conversely, when the risk-tolerance forecast is obtained from individuals’ physiological arousal, observed via their somatic activation before risky choices, the rate of misclassification is considerably lower (~17%). Emotions are confirmed to influence the financial risk-taking process, enhancing the accuracy of the individual risk-tolerance forecasting activity. Self-report questionnaires, conversely, could lead to inadequate risk-tolerance assessments, with consequent unsuitable investment decisions. Bridging these results from the individual to the institutional level, our findings should enhance cautiousness, among regulators and financial institutions, on the (ab)use of risk tolerance questionnaires as tools for classifying individuals’ behaviour under risk.