Adaptive weight multi-channel center similar deep hashing

To increase the richness of the extracted text modality feature information and deeply explore the semantic similarity between the modalities. In this paper, we propose a novel method, named adaptive weight multi-channel center similar deep hashing (AMCDH). The algorithm first utilizes three channels with different configurations to extract feature information from the text modality; and then adds them according to the learned weight ratio to increase the richness of the information. We also introduce the Jaccard coefficient to measure the semantic similarity level between modalities from 0 to 1, and utilize it as the penalty coefficient of the cross-entropy loss function to increase its role in backpropagation. Besides, we propose a method of constructing center similarity, which makes the hash codes of similar data pairs close to the same center point, and dissimilar data pairs are scattered at different center points to generate high-quality hash codes. Extensive experimental evaluations on four benchmark datasets show that the performance of our proposed model AMCDH is significantly better than other competing baselines. The code can be obtained from https://github.com/DaveLiu6/AMCDH.git.     

内河架空直立式码头力学特性测试新方法

内河架空直立式码头的传统力学特性测试技术弊端明显，为了更方便和快捷地获得码头应变场、位移场和应力与荷载的变化规律，介绍了两种新型结构检测方法。压敏涂料变色技术是将一种由特殊材料制成的具有压力传感器功能的压敏涂料涂到模型表面上，在特定波长激发光照射下，涂料发射出荧光，从而了解结构在荷载作用下的受力性能；基于数值散斑原理的高速摄像机成像技术（DSCM）是基于计算机视觉，以非接触测量的方法上对变形体变形前后的两幅数字图像进行精确图像处理，达到求解变形体应变场的目的。这两种新型技术可以在无损和全景的基础上，快速精确地得到结构的受力情况，从而为码头结构的优化设计提供参考。     

重氮盐感光纸预涂布涂料的研制

预涂布工艺可提高感光纸质量,预涂布涂料的制备关键是精选原料、合理配比和优化工艺,针对预涂布涂料制备中影响感光纸性能的相关因素进行了讨论,提出了方案。     

50HZ相敏轨道电路接收器系统硬件电路的设计研究

本文对50Hz微电子的相敏轨道电路形式的接收器系统所具备的系统结构以及工作原理进行简要的分析,继而对接收器系统的硬件电路设计进行了简要的介绍.在文章的最后对接收器软件的设计进行了介绍,其中包含软件设计的思路、结构框架以及主程序的流程图.     

Transmission electron microscopy method providing high resolution in the cell section without radiation damage

Several new features of mitochondrial nucleoid and its surroundings in mammalian cells were described previously (Pracha?, 2016). Very small details were observed using the improved transmission electron microscopy method, as described in the article. In the meantime, the method has again been improved to 2 Å resolutions in the cell section. The method described in detail in the present work is documented on the same records that were published in lower resolution in the work Pracha? (2016), enabling comparison of the achieved resolution with the previous one. New records are also presented, showing extremely high resolution and thus implying the importance of the method. Potential use of this method in different fields is suggested.     

Poly(N‐isopropylacrylamide) grafting on aluminium to actively switch its surface drag in water

Active control of flow over object surfaces achieved by means of mechanical and/or electrical methods has recently been studied. However, there has been no report on actively switching the surface drag of an object by chemical modification of the object's surface. Poly(N‐isopropylacrylamide) (PNIPA) was grafted onto the surface of an aluminium (Al) substrate via (A) surface‐initiated atom transfer radical polymerization and (B) radical polymerization with an azo‐group surface initiator. The grafting density was 0.19 and 0.15 chains nm^?2, respectively. The water contact angle of the PNIPA‐grafted Al surface reversibly changed between 55° and 82° for (A) and between 42° and 65° for (B) at temperatures of 25 and 40 °C, which was ascribed to the temperature‐responsive, hydrophilic–hydrophobic switching of the grafted PNIPA surface. The PNIPA grafting was applied on the surface of an ogive‐shaped Al model. The normalized dropping speed of the model in water increased 1.1 times at 42 °C in comparison to that at 22 °C. Switching of the surface drag of PNIPA‐grafted Al in water was demonstrated on the basis of the hydrophilicity and hydrophobicity of the grafted Al surface, the switching occurring with a change in temperature. Copyright © 2010 Society of Chemical Industry     

高等级公路跨越水敏感区域环境保护的探讨

针对高速公路无法避让水敏感区域的情况,从特殊防护栏、路面油污雨水的收集以及轻型钢结构全封闭方案等方面进行研究探讨,提出了相应的保护措施,解决了高速公路线位无法调整,跨越水敏感区域的难题。     

基于属性特征敏感问题双重应答模型设计

针对属性特征敏感性问题。设计了一种方便易行的改进模型一双重应答．被调查对象重复抽取随机装置的卡片，并回答每次所得结果的总和．讨论了其敏感属性比例的均值和方差的估计值，在抽取样本数相同的情形下，获得了比传统wanler模型和Simmons模型更高的精度．     

单分散微球压敏胶的研究

介绍了一种利用SPG膜乳化法制造单分散性粘性微粒子的新方法。与通常所使用的直接悬浮聚合法生产的粘性微粒子制成的压敏胶相比，用此单分散性粘性微粒子配制成的再剥离性压敏胶具有更好的粘合性能。     

中国压敏胶粘带标准的现状

介绍了中国压敏胶粘带标准的制定情况 ,并将中国压敏胶粘带测试方法的标准 (厚度、剥离粘合力、持粘性、初粘性以及拉伸性能的测试方法 )与ASTM、PSTC、AFERA、JIS和UL等标准组织的相应标准进行了比较 ,指出了它们之间存在的差异。对中国压敏胶粘带标准中存在的问题提出了改进建议