摘要：为成型广告机控制盒外壳部分设计了多种抽芯方式组合的模具结构,该结构利用多组不同的滑块完成抽芯,解决了生产中的难题。

摘要：According to the problems of short life and low strength of TiB2 coating cathode for current technology in aluminium electrolysis industry,this work synthesized TiB2-TiB/Ti gradient composite with TiB2 coating and TiB whiskers in metallic Ti matrix by a electrolytic boronizing method based on similar density and thermal expansivity of the three *** phase composition and morphology of the cross-section were determined by X-ray diffraction(XRD),scanning electronic microscope(SEM)and X-ray energy dispersive spectrum(EDS).The results show that uniform TiB2 layer with a thickness of 8-10μm is continuously coated on the surface while the TiB whisker connected with TiB2 layer was embedded dispersedly into the *** TiB crystal whisker has a maximum length of about 220μ*** growth rate of TiB2 and TiB is enhanced by the strong reduction of *** novel gradient design of the composite helps to extend life and improve strength of the TiB2 cathode in aluminium electrolysis.

摘要：针对当前消费者感性需求的提高,运用组合思想提出基于感性意象的产品造型优化设计方法.首先应用感性工学类目层次法得到产品的设计要素,再应用数量化一类理论建立感性意象和造型特征元素之间的对应关系,作为优化产品造型时的评判依据.然后应用蚁群算法对造型特征元素进行组合优化,实现了以少量的产品属性形态构建多样的产品造型方案,从而快速设计出满足消费者感性意象需求的产品.最后以电热水壶设计进行实例研究,结果表明运用该方法可有效地进行产品意象造型优化设计.

摘要：西藏传统文化在与现代文明的激烈碰撞中不可避免受到冲击。转型困难、创新乏力已成为阻碍西藏地区文化产业发展的首要因素。究其深层次的原因是传统文化产业人才培养缺乏顶层设计、产业人才与产业需求的矛盾和差距导致。研究基于"三螺旋理论"结合"雪堆白传统手工艺术学校"的经验,采用结构分析法从政策、产业、教育三个层面进行传统文化产业人才培养系统设计,构建健康和谐的传统文化产业生态体系,为传统文化产业人才培养模式提供理论依据。

摘要：文中研究石油地震数据处理的并行计算设计模式 (流水、扇出 /扇入、主从和混合 )和应用框架 .框架和模式的目的都是复用成功的软件设计策略 .框架可以看作一类设计模式的具体实现 .针对地震数据处理模式设计和实现了 GRISYS地震数据处理应用框架 .利用这个框架 ,以往大量的串行地震处理模块 ,不需要任何改动 ,可以在工作站集群计算机或大规模并行计算机上实现并行计算 .在曙光 2 0 0 0 - II并行计算机上试验 ,获得了非常高的并行处理加速比 .

摘要：粤港澳大湾区是中国重要的经济中心,过去30年间经历了快速城镇化,对区域的植被、农田和水体等生态系统产生了重要的影响。揭示快速城镇化对水资源的影响对于水资源管理与规划、生态环境保护等具有重要意义。然而,现有研究对粤港澳大湾区水体的时空变化认识仍然不足,限制了水资源管理与规划、环境保护等政策的制定与实施。本研究旨在利用1990—2020年粤港澳大湾区的密集时间序列Landsat影像数据,使用深度学习模型WatNet提取水体,并对水体动态变化进行时空变化分析,从而探究快速城镇化背景下粤港澳大湾区城市群水体动态变化过程和结果。结果表明:1)粤港澳大湾区的水体面积呈“上升—小幅波动—下降”趋势,水体收缩的区域主要分布于珠江下游及珠江口沿岸地区,水体扩张的区域主要分布于粤港澳大湾区西南部;2)粤港澳大湾区全域水体面积与自然地理指标相关性弱,与经济社会指标的相关性明显,其中与人口、国内生产总值等经济社会指标具有显著的负相关关系;3)基于密集时间序列结果对水体转出地类进行分析,2020年与1990年相比,最终有40.17%的水域转化为不透水面,密集时间序列分析发现其转化过程大致为“水体→农田/湿地→不透水面”。本研究基于密集时间序列Landsat影像的研究结果,揭示了粤港澳大湾区近30年来水体动态变化的详细情况及其主要驱动因素,有助于了解大湾区水资源的时空演变,同时也为快速城镇化地区制定针对性的水资源管理策略、优化生态环境保护措施以及预测城市化对水体变化的潜在影响提供了科学依据和决策支持。

摘要：水下滑翔器设计参数对其运动性能具有重要影响.通过对水下滑翔器稳定运动状态的分析,获得其设计参数与整体运动性能的关系,并得到参数的取值范围,用于指导水下滑翔器设计过程.为此,详细分析了水下滑翔器稳态运动时的攻角、运动方向、速度和设计参数之间的关系,并得到水下滑翔器设计参数需要满足的约束条件.通过分析水下滑翔器的运动性能,得到旋转重物的偏心量和浮力调节系统位置等参数的优化取值.最后,文章设计了水下滑翔器的物理样机,并进行了水域试验,验证了设计和分析的有效性.

摘要：针对目前核动力装置工程设计中在软、硬件资源使用上存在的问题,提出运用云计算技术构建基于私有云架构的核动力装置设计平台的建设思路和实施方案,并对核动力装置设计平台的体系架构、关键技术及实现途径、资源配置、运行管理等方面进行详细的阐述。

摘要：The innovation and entrepreneurship of college students is a new type of education and research model that takes cultivating students’innovative spirit and ability as the primary value orientation and takes the particular group of college students and graduated college students as the central part of *** order to comply with the national innovation-driven development strategy,colleges and universities also cultivate innovative talents in line with the talent market through innovation and entrepreneurship *** the vital innovation and entrepreneurship atmosphere in the country and universities,we fully understand the regional situation of Nanning and Wuming in Guangxi Province and put forward the“Wuming Cloud Project”.The Wuming Cloud Project aims to create a comprehensive international ethnic and cultural park that integrates Southeast Asian flavours,traditional architecture,and ethnic cultures and attracts tourists through diversified cultural experiences,convenient transportation services,and a variety of promotional tools,which will not only promote the tourism and economic development of Wuming but also bring tourists an immersive experience of Southeast Asian ethnic *** Cultural Park is significant to Nanning in absorbing resources from various parties,displaying particular cultures,and promoting tourism and economic development.

摘要：Mobile cloud computing （MCC） has become a promising technique to deal with computation- or data-intensive tasks. It overcomes the limited processing power, poor storage capacity, and short battery life of mobile devices. Providing continuous and on-demand services, MCC argues that the service must be available for users at anytime and anywhere. However, at present, the service availability of MCC is usually measured by some certain metrics of a real-world system, and the results do not have broad representation since different systems have different load levels, different deployments, and many other random factors. Meanwhile, for large-scale and complex types of services in MCC systems, simulation-based methods （such as Monte- Carlo simulation） may be costly and the traditional state-based methods always suffer from the problem of state-space explosion. In this paper, to overcome these shortcomings, fluid-flow approximation, a breakthrough to avoid state-space explosion, is adopted to analyze the service availability of MCC. Four critical metrics, including response time of service, minimum sensing time of devices, minimum number of nodes chosen, and action throughput, are def＇med to estimate the availability by solving a group of ordinary differential equations even before the MCC system is fully deployed. Experimental results show that our method costs less time in analyzing the service availability of MCC than the Markov- or simulation-based methods.