摘要：为优化复杂边界条件下的泄洪通道水流流态,完善泄洪通道的纵断面及结构设计,结合长岭皮水库综合治理工程,通过数值模型分析计算设计方案的水流流态及流速,优化后方案流态从明满流变化为全段明流,进一步论证了方案的可行性。研究成果为复杂边界条件下利用数值模型模拟隧洞流态,优化隧洞方案设计提供了一定参考。

摘要：A high-intensity continuous-wave(CW) radio frequency quadrupole(RFQ) accelerator is designed for boron neutron capture *** transmission efficiency of a 20-mA proton beam accelerated from 30 keV to 2.5 MeV can reach 98.7% at an operating frequency of 200 *** beam dynamics have a good tolerance to *** comparing the high-frequency parameters of quadrilateral and octagonal RFQ cross sections,the quadrilateral structure of the four-vane cavity is selected owing to its multiple advantages,such as a smaller cross section at the same frequency and easy *** addition,tuners and undercuts are designed to tune the frequency of the cavity and achieve a flat electric field distribution along the *** this paper,the beam dynamic simulation and electromagnetic design are presented in detail.

摘要：隐性故障会造成光伏发电机组运行失稳,为了有效预警光伏发电机组隐性故障,提出了光伏发电机组隐性故障快速序列化预警技术。通过BiLSTM反向传播,解决数据库故障长文本梯度弥散问题。利用相邻标签关系,获取一个全局最优标签序列。根据标注序列在所有序列集合中的softmax概率得分,获取处理后的序列化故障数据。计算隐性故障支持度,缩短隐性故障序列化挖掘时间。设置挖掘关联规则,使用频繁挖掘方法挖掘序列化隐性故障。根据站域保护隐性故障分析结果,快速预警隐性故障。由实验结果可知,使用所研究技术预警的故障时间与实际故障发生时间一致,预警的电压波动幅度仅与实际情况存在0.03 pu的偏差,具有精准预警效果。

摘要：设计二次成像方式,解决了相位板放置位置和探测器冷阑结构之间的位置冲突,完成了制冷型红外光学系统的结构设计。引入波前编码技术,结合截止频率处调制传递函数的变化趋势和对调制传递函数曲线一致性的客观评价,分析相位板参数取值对系统的不同影响,直接得到合适的相位板参数。利用光学软件对波前编码系统进行仿真,并采用Lucy-Richardson迭代算法恢复编码模糊图像。基于像素及人眼视觉感受对复原图像进行综合评价,证明波前编码技术有效拓展了普通红外光学系统的焦深,可拓展至原焦深范围的20倍。

摘要：吴门画派作为中国画艺术的代表画派,也是中国传统文化的重要部分,其艺术元素和文化内涵被国内外服装设计师们广泛借鉴应用。本文从传承中国传统文化的角度出发,结合设计案例,探讨了吴门画派艺术融入服装设计的方式及在服装产品中的具体应用,分析了该画派艺术在服装领域中的价值与发展趋势。

摘要：Solar-driven CO_(2) reduction is an efficient way to convert sustainable solar energy and massive CO_(2) to renewable solar fuels,such as CH_(4),HCOOH,HCHO,and CH_(3)OH,*** to now,significant research efforts have been devoted to exploring the reaction path and developing the *** heterogeneous photocatalysis,among the semiconductor-based photocatalysts,titania(TiO_(2)),as an inexpensive and practically sustainable metal oxides,remains the most extensively studied photocatalyst over the past *** this review,we summarize the most recent advances in the solar-driven CO_(2) reduction using TiO_(2)-based photocatalysts,which include the fabrication of heterojunction,surface functional modification,band structure engineering,and morphology design,aiming to improve the CO_(2) conversion efficiency and selectivity to the desired ***,photoelectrochemical and photothermal approaches are introduced and the fundamental principles to activate and enhance the performance of TiO_(2) for the specific reaction are *** exploration of the solar-driven approaches and discussion on the underlying mechanism allow the comprehensive understanding of CO_(2) photoreduction,that can lead to a rational design and synthesis of TiO_(2)-based photocatalysts.

摘要：论文以800kVA深海变压器为研究对象,在漏磁分析和损耗计算的基础上,基于分布式热源计算模型,建立了油浸式变压器流场和温度场仿真模型。综合考虑环境温度、海水流速、海洋环境和变压器散热结构等因素,设置了十二种计算工况进行温度场模拟计算和变压器温升校核评估。通过对整体温度、采样点温度、热点温度、油流速度和油密度等参数的统计与分析,得出了现有深海变压器的设计和材料选择基本满足变压器设计要求,即油面温升低于60K,热点温升低于78K。论文中以工况1为例,给出了深海变压器温度场模拟计算过程;最后,在结论中总结出影响深海变压器温升的主要因素,且可用于指导变压器的设计。

摘要：基坑开挖引起的土体位移对临近建筑物桩基的影响越来越得到工程界的重视。对某基坑工程开挖进行的实测表明,基坑开挖可对临近桩基产生显著影响,并发现当排桩桩间距较大时,其后止水帷幕的水平位移可能大于排桩水平位移。以该实测工程为算例,采用三维有限元法进行了计算并与实测进行了对比。分析了桩基和基坑间距、桩基刚度、桩顶竖向荷载和桩基顶部约束条件等对桩基附加弯矩、位移的影响,并进行了评价分析,以期为有关的设计和施工提供参考。

摘要：For the Chinese-ADS project, to provide enough neutrons to drive the subcritical system, tens of MW spallation targets for the C-ADS are necessary. This is not an easy task. Here we propose a new concept for a gravity-driven dense granular flow target, in which heavy metal grains are chosen as the spallation target material. Compared with currently widely used targets, this conceptual design has advantages with regard to heat removal, thermal shock protection, neutron yield, radiotoxicity reduction, and convenient operation. The gravity-driven dense granular flow target has the potential to easily deal with these issues and to form a foundation for tens of MW spallation targets for cost-effective facilities. Preliminary simulations and experiments have been completed to support this conceptual design.

摘要：在老年人使用新App的过程中,熟悉App的使用流程是一个挑战。文章对现有的老龄化App设计中认知地图的建构方式进行了研究。发现出于方便老年用户快速适应使用流程的目的,各种老龄化App的结构、版式与模块存在很高的相似度与模式化特点。文章通过分析现有老龄化App中的结构框架和内容形式,以多媒体交互功能和商业信息模块为例,探索模式化的App设计在帮助老年用户快速形成认知地图和辅助互联生活方面的作用。