摘要：Recently, virtual reality and interactive somatosensory technology has become one of the hot issues in the research of computer applications. Leap Motion is a new type of interactive somatosensory devices which bring users senses of immersion efficiently. This paper studies a interactive somatosensory game model based on Leap Motion and implemented with Unity. Based on the two core technology philosophy of Leap Motion, i.e., virtual reality technology and body sense of interactive technology, the design implementation of each sub module of the system and Leap Motion game algorithm are thoroughly addressed. This paper has certain significance for future application of Leap Motion in film, television, and interactive games.

摘要：随着工业的发展,染料废水对人类和环境的危害愈加显著,其中偶氮类的亚甲基蓝这种染料废水不仅色度大,而且难以降解.因此设计一种高效且灵敏的吸附剂来去除亚甲基蓝对人类和环境的危害是亟须解决的问题.本研究利用基于色散力校正的密度泛函理论(DFT-D)的第一性原理方法探索了本征及掺杂磷烯吸附剂对亚甲基蓝的吸附机理,并详细考察了本征及掺杂Al,Ca,Ti和Fe金属原子后的磷烯对亚甲基蓝吸附的影响.研究结果表明亚甲基蓝初始构型会影响磷烯对其吸附,当亚甲基蓝平躺于磷烯表面时有较大的吸附,且金属原子掺杂显著地影响其对亚甲基蓝的吸附能力,掺杂金属原子均增大了磷烯对亚甲基蓝的吸附.其中吸附能力是Fe掺杂磷烯>Ca掺杂磷烯>Ti掺杂磷烯>Al掺杂磷烯.研究结论对于亚甲基蓝的处理带来了新的指导方向,有望为相关染料废水的检测和去除提供有意义的理论参考.

摘要：Electrochemical CO_(2) reduction is a promising technology for solving the CO_(2) emission problems and producing value-added products. Here, we report a hierarchically porous Cu1Au single-atom alloy(SAA) as an efficient electrocatalyst for CO_(2) reduction. Benefiting from the hierarchically porous architectures with abundant vacancies as well as three-dimensional accessible active sites, the as-prepared nanoporous Cu1Au SAA catalyst shows remarkable CO_(2) reduction performance with nearly 100% CO Faraday efficiency in a wide potential range(-0.4 to -0.9 V vs. reversible hydrogen electrode. The in-situ X-ray absorption spectroscopy studies and density functional theory calculations reveal that the Cu-Au interface sites serve as the intrinsic active centers,which can facilitate the activated adsorption of CO_(2) and stabilize the *COOH intermediate.

摘要：For anomaly detection,anomalies existing in the background will affect the detection ***,a background refinement method based on the local density is proposed to remove the anomalies from *** this work,the local density is measured by its spectral neighbors through a certain radius which is obtained by calculating the mean median of the distance ***,a two-step segmentation strategy is *** first segmentation step divides the original background into two subsets,a large subset composed by background pixels and a small subset containing both background pixels and *** second segmentation step employing Otsu method with an aim to obtain a discrimination threshold is conducted on the small *** the pixels whose local densities are lower than the threshold are ***,to validate the effectiveness of the proposed method,it combines Reed-Xiaoli detector and collaborative-representation-based detector to detect *** are conducted on two real hyperspectral *** show that the proposed method achieves better detection performance.

摘要：In order to improve the mechanical properties of *** transition joints manufactured by explosive welding,meshing bonding interfaces were obtained by prefabricating dovetail grooves in base *** microstructure and mechanical properties of the meshing interfaces were systematically *** microstructure observation showed that metallurgical bonding without pores was created in the form of direct bonding and melting zone bonding at the *** on tensile specimens showed cleavage fracture on the steel side and ductile fracture on the aluminum side near the *** tensile shear test results indicated that the shear strength of the meshing interface 0°and 90°was increased by 11%and 14%,respectively,when being compared to that of the ordinary *** transition *** values of microhardness decreased as the distance from the interface *** three-point bending,cracks were observed at the bonding interface for some specimens due to the existence of brittle *** compounds.

摘要：特定领域软件体系结构(domain-specificsoftwarearchitecture,简称DSSA)是特定领域开发中的重要资产,而基于特征的领域模型使得从领域需求到DSSA的映射成为可能.引入本体作为特征模型的描述基础,通过该方法得到的领域特征本体将同时作为领域内业务构件的语义描述基础存在.在此基础上,提出了基于特征模型和构件语义的概念体系结构设计方法.该方法综合考虑了特征模型中的共性、可变性、绑定时间以及结构关系、依赖关系等对DSSA设计的影响,同时以构件语义作为特征到概念构件设计的过渡.相关方法已经实现为基于本体的特征建模工具和基于特征模型的体系结构设计工具,为特征驱动的领域开发提供了有力的支持.

摘要：针对硅微振梁式加速度计输出频率随环境温度漂移的问题,提出了抗温漂的硅微结构设计方法及相关工艺,降低了环境温度对输出的影响,在室温条件即可达到一定精度。通过建立"硅-玻璃"和"玻璃-陶瓷"耦合模型,分析了造成硅微振梁式加速度计温度漂移的原因。然后提出了"抗温漂耦合设计"的微结构和"半粘结封装"的封装工艺,降低了耦合模型中的理论温漂。利用加工出的原理样机进行实验,结果显示,采用抗温漂结构设计及封装工艺的原理样机,输出频率的温漂系数为-3.5×10-6/℃,室温下零偏稳定性为72.0μg。实验验证了抗温漂理论的可行性,可以满足室温下高精度硅微振梁式加速度计的设计要求。

摘要：Paper-cut is one of the oldest folk arts of Han nationality, to give people visual space through feeling and artistic enjoyment. With the development of modernization, the number of person who inherits or understands the intangible cultural heritage is dwindling. Hence, we need a new form to inheritance this art urgently. Based on augmented reality technology, we achieve the real-time calculation of image position and angle, the exhibition of the corresponding virtual scene in this paper. Users can achieve the virtual interaction in reality, thus, multi-dimensional experience of paper-cut is provided for users.

摘要：US‐APWR是在日本国内开发完成的APWR的基础上面向美国市场的满足经济性、可靠性、安全性且经过验证的170万kW级先进核电厂，其采用了高性能的蒸汽发生器、汽轮机和先进蓄压箱等最新技术，并且反映了强化安全级电源、长周期运行以降低发电成本、基于宽松抗震条件的紧凑型厂房布置等美国的规定要求和用户需求。本文分析研究了US‐APWR核电厂的主要设计技术方案和特点，介绍了该型核电厂的主要规格指标、主要设备的设计、安全设计、布置设计、汽轮机、仪表控制系统等主要设计内容。

摘要：提出了用虚拟现实技术实现ＭＥＭＳ的快速原形设计的思想，并具体给出了虚拟环境中的实现步骤。核心是在虚拟环境中实现ＭＥＭＳ器件的部件设计，拟实组装，拟实运行。进一步，构建了虚拟现实实验平台；并在此平台上实现了微马达和微泵的拟实运行及一个拟实组装的例子。