一个较精确加强型的半离散Hilbert型不等式

应用权函数的方法及Hermite Hadamard不等式, 建立一个较精确且加强型的半离散非齐次核Hilbert型不等式, 并给出该不等式具有最佳常数因子联系参数的一组等价性质及一些特殊参数不等式.      

基于动态阈值的混凝土裂缝高抗噪提取及识别方法

针对表面布有蜂窝麻面等复杂噪声的混凝土裂缝,提出了一种基于动态阈值的混凝土裂缝高抗噪提取方法.首先,通过灰度变换、高斯滤波、信息增强等技术弱化、去除噪声,增强图像中裂缝的亮度,提高裂缝与背景的对比度;然后,采用OTSU阈值分割算法去除伪裂缝,基于裂缝与干扰噪声面积的差异,引入动态阈值,实现各类型裂缝的提取;最后,基于边缘检测和裂缝骨架细化处理,计算裂缝的长度、宽度和面积3项特征参数.基于室内实验和室外实际桥梁拍摄的4组裂缝图像结果表明,4组裂缝的平均宽度分别为2.01、1.07、1.34、0.97 mm,说明该方法适用于不同背景下各类型裂缝的提取,具有较强的鲁棒性.     

Aptamer and its applications in neurodegenerative diseases

Aptamers are small single-stranded DNA or RNA oligonucleotide fragments or small peptides, which can bind to targets by high affinity and specificity. Because aptamers are specific, non-immunogenic and non-toxic, they are ideal materials for clinical applications. Neurodegenerative disorders are ravaging the lives of patients. Even though the mechanism of these diseases is still elusive, they are mainly characterized by the accumulation of misfolded proteins in the central nervous system. So it is essential to develop potential measures to slow down or prevent the onset of these diseases. With the advancements of the technologies, aptamers have opened up new areas in this research field. Aptamers could bind with these related target proteins to interrupt their accumulation, subsequently blocking or preventing the process of neurodegenerative diseases. This review presents recent advances in the aptamer generation and its merits and limitations, with emphasis on its applications in neurodegenerative diseases including Alzheimer’s disease, Parkinson’s disease, transmissible spongiform encephalopathy, Huntington’s disease and multiple sclerosis.     

低碳约束下青岛市就业结构评价与优化研究

在国家提出发展低碳经济的背景下,为了分析低碳约束下青岛市就业结构优化水平,选取青岛市9个行业2004-2015年的数据,通过面板数据模型研究不同行业碳排放强度和就业结构之间的关系。结果表明,青岛市同行业自身的碳排放强度存在差异,与就业人口的关系也存在较大差异。最后根据评价结果,提出调整能源结构、寻找绿色经济增长点以及促进绿色就业从而实现低碳约束下就业结构优化的建议。     

Liquid marbles.

The transport of a small amount of liquid on a solid is not a simple process, owing to the nature of the contact between the two phases. Setting a liquid droplet in motion requires non-negligible forces (because the contact-angle hysteresis generates a force opposing the motion), and often results in the deposition of liquid behind the drop. Different methods of levitation-electrostatic, electromagnetic, acoustic, or even simpler aerodynamic techniques-have been proposed to avoid this wetting problem, but all have proved to be rather cumbersome. Here we propose a simple alternative, which consists of encapsulating an aqueous liquid droplet with a hydrophobic powder. The resulting 'liquid marbles' are found to behave like a soft solid, and show dramatically reduced adhesion to a solid surface. As a result, motion can be generated using gravitational, electrical and magnetic fields. Moreover, because the viscous friction associated with motion is very small, we can achieve quick displacements of the droplets without any leaks. All of these features are of potential benefit in microfluidic applications, and also permit the study of a drop in a non-wetting situation-an issue of renewed interest following the recent achievement of super-hydrophobic substrates.     

高校继续教育可持续发展的探究

高校人才培养的途径不是单一的,继续教育作为创建“学习型”社会重要的手段一直处在较为尴尬的境地.高校继续教育可从明确办学目标、完善管理体制、推动资源共享、建立高校间优势互补、利用企业和社会的资源等方面着手,围绕终身教育体系要求进行一系列改革,以便获得更多健康、迅速、持续的发展的机会.     

NiO nanosheet assembles for supercapacitor electrode materials

In this paper, large scale hierarchically assembled Ni O nanosheets have been favorably fabricated through a facile hydrothermal route. The as-prepared Ni O nanosheet assembles were characterized in detail by various analytical techniques. The results showed these nanosheets present the thickness of about 30 nm and the surface area is 116.9 m~2 g~(-1). These NiO nanosheet assembles were used as the working electrode materials in electrochemical tests, which demonstrated a specific capacitance value of 81.67 Fg ~(-1)at the current density of 0.5 Ag~(-1)and excellent long cycle-life stability with 78.5% of its discharge specific capacitance retention after 3000 cycles at the current density of 0.5 Ag~(-1), revealing the as-synthesized NiO nanosheet assembles might be a promising electrode material for supercapacitor applications.     

基于设备的石化能效监测方法研究

根据国内石化行业生产过程中在能效监测上的现状,建立了能效监测体系架构,并根据该体系架构提出了基于设备的能效监测方法.利用该方法对石化行业中换热器、机泵设备建立了能效计算模型,并给出了每种设备在能效参数上的求解方法,通过对能源消耗的实时监测明确了能源消耗的去向,实现了能源的精细化管理,为后续能效评估打下了基础.     

大型二维装箱问题及其禁忌算法研究

对大型二维装箱问题进行描述,提出求解该问题的禁忌算法.算法基于自然数编码,设计了货物的摆放规则和序列生成方式,采用二种邻域,根据邻域的不同,构造了两种禁忌表.算法采用惩罚函‘数处理空间利用率约束.介绍算法的原理,给出了具有代表性算例试验结果并且进行了分析.试验结果表明了提出的禁忌算法对优化大型二维装箱问题的有效性.     

遥感地表参数反演中的一种不确定性知识处理方法

在基于贝叶斯网络的遥感参数反演模型中引入虚拟节点,提出不确定性知识表示与知识更新方法,推导了遥感反演中的参数后验信息更新公式.用北京顺义遥感实验的多尺度数据对冬小麦的叶面积指数和叶绿素面质量进行反演计算,验证了多知识源反演过程中不确定性知识对参数后验分布概率的调整模式.