基于傅立叶图像重建的车用换热器表面缺陷检测?

针对车用换热器表面缺陷检测问题,提出一种利用傅立叶图像重建提取方向纹理表面缺陷的算法。该算法采用局部二值模式（ LBP ）描述去除光照影响并对LBP图像进行快速傅立叶变换,通过频率域滤波和图像重建有效去除方向纹理的影响,由二值化及团块分析最终提取换热器表面缺陷区域。实验结果证明,本文算法可以快速、有效地检测出换热器表面缺陷。     

Local perceptions of the EU’s role in peacebuilding: The case of security sector reform in Palestine

ABSTRACT

Perception research can make a valuable contribution to the study of the local dimension in EU peacebuilding. The conceptual framework developed in this article distinguishes between perceptions of the “legitimacy,” “effectiveness,” and “credibility” of EU peacebuilding practices, which are crucial factors for successful peacebuilding. Relying on the case of the EU’s support for security sector reform (SSR) in Palestine, this article shows that local stakeholders—which participate in various EU-sponsored training and capacity-building programs—display considerable support for liberal peacebuilding norms. Yet, perceived discrepancies between the EU’s peacebuilding rhetoric and its SSR activities have severely undermined the potential of the EU’s liberal peacebuilding model in the eyes of Palestinian stakeholders. Critical local perceptions are frequently articulated with reference to the EU’s own liberal peacebuilding discourse, pointing to a lack of inclusiveness of the SSR process and deficits in terms of democratic governance and the rule of law.     

The limits of technocracy and local encounters: The European Union and peacebuilding

ABSTRACT

This article is the conclusion to a special issue that examines the European Union (EU), peacebuilding, and “the local.” It argues that technocracy—particularly EU technocracy—shapes the extent to which local actors can hope to achieve ownership of externally funded and directed peace support projects and programs. Although some actors within the EU have worked hard to push localization agendas, a number of technocracy linked factors come together to limit the extent to which the EU can truly connect with the local level in its peace support activities. While the EU and other international actors have invested heavily into capacity building in conflict-affected contexts, the EU’s own capacity has not necessarily been built to address the scalar problem of accessing the local in ways that are meaningful.     

Local ownership as international governmentality: Evidence from the EU mission in the Horn of Africa

ABSTRACT

While some Foucault-inspired studies construe local ownership in international interventions as a form of liberal governmentality that aims to govern through freedom, others lambast it as an illiberal governmentality that is likely to be resisted because it undermines local autonomy. However, we still do not know what is the rationality behind local ownership, how it is being operationalized, and why a principle that aims to govern through freedom ends up curtailing it. I argue that local ownership, echoing the colonial principle of indirect rule, is driven by the rationality of advanced democracies on how best to govern global insecurities at a distance. Consequently, ownership is operationalized as responsibilization for externally designed objectives. This often gives rise to local resistance which undermines international efforts to achieve ownership. I illustrate my arguments with evidence from the EU Mission on Regional Maritime Capacity Building in the Horn of Africa (EUCAP Nestor).     

河道型水库区下垫面和地形改变对局地降水量影响

河道型水库区降水由于受到库区地形和下垫面改变的影响,研究降水与地形和下垫面改变之间的关系对于库区的生产生活非常重要。依据水汽循环理论,考虑了地形起伏引起的气流运动路径改变,以及下垫面变化引起的水库区渗透量、蒸发量和地面植被截留量的变化,推导出局地降水量与地形起伏和下垫面改变之间的关系,以三峡库区重庆段为例,对结果进行验证。计算结果表明：在下垫面改变和地形升高的作用下,年均降水量有所增加,计算结果与库区气象站检测结果较为接近。     

局部线性估计在半参数条件矩中的应用

半参数方法在计量经济领域有着广泛的应用,但由于其既有参数变量,又有未知函数,因此采用条件矩限制和Sieve方法来得到其参数估计是一个比较好的方法。作为一种非参数回归方法,局部线性估计具有优良的统计特性,因此本文用它来得到条件矩的一个非参数估计,并在此基础上证明了估计参数的一致性和收敛速率。     

论我国地方国家机关的军事立法权

我国地方国家机关享有国防职权和立法权,有权就国防事务制定地方性军事法规和地方性军事规章。地方国家机关的军事立法权既有法律依据,也有存在的必要性。但地方军事立法的内容是有限的,不应涉及军事行动和军队管理事项。     

非线性系统的鲁棒镇定:Volterra级数法

基于Ｖｏｌｔｅｒｒａ 级数理论,针对一类非线性系统,首先给出了此类系统可镇定的充分条件,接着讨论了非线性系统鲁棒镇定性的问题,并给出了系统鲁棒可镇定的条件;最后,用实例仿真来验证其有效性     

基于局部积分双谱与SVM的雷达目标识别

针对高分辨距离像的特点,应用双谱与SVM研究高分辨雷达目标识别问题。提出了基于局部积分双谱与SVM的雷达目标识别方法。该方法选择具有最强鉴别能力的积分双谱构成局部积分双谱特征,基于局部积分双谱进行距离像特征提取,然后应用支持向量机对提取的特征进行分类识别。利用四种局部积分双谱的目标识别仿真实验结果表明,提出的方法具有良好的分类性能。     

求解布尔不可满足子式的消解悖论算法

求解布尔不可满足子式在超大规模集成电路设计与验证领域都具有非常重要的理论与应用价值,帮助EDA工具迅速定位错误与不一致。针对求解不可满足子式的非完全方法,提出了消解悖论与悖论解析树的概念,在此基础上提出一种启发式局部搜索算法。该算法根据公式的消解规则,采用局部搜索过程直接构造证明不可满足性的悖论解析树,而后递归搜索得到不可满足子式;算法中融合了布尔推理技术、动态剪枝方法及蕴含消除方法以提高搜索效率。基于随机测试集进行了实验对比,结果表明提出的算法优于同类算法。