摘要：为了保护皮肤健康,特设计开发了核辐射防护服。防护服面料采用双层结构设计,外层经纱和纬纱采用石墨烯聚酯纤维,内层经纱采用石墨烯聚酯纤维,纬纱采用生物基胶原蛋白黏胶纤维。试验结果表明:由三角形截面石墨烯聚酯纤维制成的面料在单粒碘(131I-1)化钠胶囊距织物10cm处的屏蔽率为80.4%;35粒放在织物表面的屏蔽率为56.4%;对氯化锶的吸附率为18.22%,综合防核辐射效果更佳。经检测,此款面料对大肠埃希菌、金黄葡萄球菌、白念珠菌的抑菌率均为99%;对氨气、醋酸、异戊酸、2-壬烯醛的异味成分减少率分别为86.7%、88.0%、98.2%、94.5%,均达到国家标准要求。

摘要：In this paper, we present a swarm intelligence design technology based on a workshop of meta-synthetic engineering, including the architecture, the decision-making process of swarm intelligence design based on a meta-synthetic workshop, and the design resource delivery technology involved in the design. We conclude the paper with a discussion of future research.

摘要：由于人体器官的不规则形变,可变形三维医学图像配准仍然是医学图像处理中的难题.针对该问题,本文提出了一种基于Transformer的多尺度可变形三维医学图像配准方法.该方法首先采用多尺度策略来实现多层次的连接,以捕捉不同层次的信息.通过自注意力机制提取全局特征,并利用膨胀卷积捕获更广泛的上下文信息和更细节的局部特征,从而增强配准网络对全局和局部特征的融合能力.其次,本文根据图像梯度的稀疏性先验,引入了归一化总梯度作为损失函数,有效减少了噪声和伪影对配准过程的干扰,更好地适应不同模态的医学图像.在公开的脑MRI数据集(OASIS和LPBA)上评估本文所提方法的性能.综合结果表明,该方法不仅能保持基于学习的方法在运行时间上的优势,还在均方误差和结构相似性等指标上表现出较高的性能.此外,消融实验的结果进一步证明了本文所提方法和归一化总梯度损失函数设计的有效性.

摘要：Radon is a polluting and radioactive gas released by rock fracture. Shear fracture is widely developed in surrounding rock mass of deep engineering. Nevertheless, the correlation between radon release and the shear fracture is undefined. In this study, the intact Jinping marble and Baihetan basalt were adopted as samples. Based on radionuclide content analysis, the intrinsic characteristics of radon emission were analyzed. Then a direct shear testing system was designed to synchronously measure radon release during rock fracture. The direct shear tests were carried out under different normal stresses. The relationship between shear fracture process and cumulative radon concentration was explored. The results indicated that radon release varied with the increase of shear displacement under the same normal stress. The general pattern showed a slight increase and fell in the initial loading phase, then increased rapidly to the peak release approximately corresponding to the peak of shear stress, and finally decreased to a stable level with the development of shear displacement after sample failure. The initial and peak radon concentrations increased linearly with the increase of normal stress. The same trend was found in shear failure surface area and cumulative radon concentration according to the rise angle(RA) value-average frequency(AF) distribution.

摘要：The application of thermoelectric devices(TEDs)for personalized thermoregulation is attractive for saving energy while balancing the quality of *** that directly attach to human skin remarkably minimized the energy wasted for cooling the entire ***,facing the extreme dynamic geometry change and strain of human skin,conventional TEDs cannot align with the contour of our bodies for the best thermoregulation ***,we designed a kirigami-based wearable TED with excellent water vapor permeability,flexibility,and *** analysis and experimental results reveal that our product can withstand various types of large mechanical deformation without circuit *** stated outcome and proposed facile approach not only reinforce the development of wearable TEDs but also offer an innovative opportunity for different electronics that require high conformability.

摘要：A novel fluid sensing system based on side-polished optical fiber(SPOF)is proposed,which realizes the fluid replaceability and effective refractive index(RI)sensing *** investigations demonstrate that the photonic bandgap effect can be obtained if the RI of liquid is higher than that of substrate material in the wavelength range *** relationship between bandgap edge wavelength and RI is studied *** SPOF with a depth of 57μm is used in the experiment to realize the construction of the fluid *** filling three different liquids,the result shows that the wavelength of the bandgap edge has a red shift with RI increased,which is nearly linear in the RI range of 1.56—1.6 with a sensitivity about 5543.64 nm/*** proposed sensing system can be flexibly applied to the field of fluid characteristic sensing such as biochemical solution characteristic detections.

摘要：近几年来网络广告异军突起,形式也逐渐多样化.随着网络广告市场的急剧增加,越来越多的广告主希望在推出某产品或服务后,能够用更少的支出吸引更多对该产品或服务感兴趣的用户与广告进行交互(看到广告,点击广告,注册、下订单、购买产品等等后继行为).网络广告定向技术因此应运而生.本文介绍了定向技术的分类,并对每种定向技术具体阐述了其应用场景;总结和对比了近几年网络定向技术中常用的方法和模型.

摘要：脑小血管病(cerebral small vessel disease,CSVD)是老年人最常见的脑血管疾病,也是引起认知功能障碍的最常见原因之一。目前对CSVD的治疗有很大的局限性。CSVD的病理机制、临床表现和影像学表现的异质性,以及对本病缺乏共识,均可影响相关药物临床试验的进展。为了给CSVD的治疗提供可靠的依据,并为今后的临床实践增加特异性药物的选择,国家神经系统疾病临床医学研究中心和中国卒中学会脑小血管病分会联合起草本共识。期望规范CSVD相关临床试验来评价药物的疗效和安全性,为CSVD的治疗提供可靠的证据支持。

摘要：The seismic behavior of planar frames with concrete-filled T-section columns to steel beam was experimentally and numerically studied. A finite element analysis （FEA） model was developed to investigate the engineering properties of the planar frames. Two 1：2.5 reduced-scale specimens of T-section concrete-filled steel tubular column and steel beam of single-story and single-bay plane frames were designed and fabricated based on the design principles of strong-column, weak-beam and stronger-joint. One three-dimensional entity model of the investigated frame structure was built using a large-scale nonlinear finite-element analysis software ABAQUS. Experimental results show that the axial compression ratio has no effect on the failure mode of the structure, while with the increase of axial compression ratio and the dissipated energy ability increasing, the structural ductility decreased. The results from both experiments and simulations agree with each other, which verifies the validity and accuracy of the developed finite element model. Furthermore, the developed finite element model helps to reflect the detailed stress status of the investigated frame at different time and different positions.

摘要：针对锻模新型飞边结构——阻力墙,对其结构参数进行了优化研究。通过应用部分析因设计方法,对阻力墙结构参数的效应进行了分析,筛选出了关键因子。将得到的设计变量应用拉丁超立方抽样,对得到的样本点进行有限元模拟。以阻力墙结构参数为变量、有限元模拟结果为响应,建立代理模型。采用线性加权法将所得近似模型转化为单目标函数,利用粒子群算法进行全局寻优,最后应用遗传算法对该优化问题进行了比较和验证。结果表明,采用粒子群算法能够得到最优化的阻力墙结构参数,且收敛速度远高于传统遗传算法。