摘要：船首外飘砰击压力设计载荷的影响因素包括船首与波浪之间的设计砰击速度和船首外飘砰击压力系数。论文结合船舶耐波性理论和概率分析方法,推导了船首外飘垂向设计砰击速度;利用落体砰击载荷试验技术,给出了船首外飘砰击压力系数的三维试验方法。以一艘实船为例,将该方法确定的垂向设计砰击速度、外飘砰击压力系数与劳氏规范值进行对比,分析二者的异同之处,为船首外飘砰击设计载荷的预报或相关规范的制定提供参考。

摘要：针对运动结构日益广泛用于景观构筑物的现象,从影响运动结构稳定构形状态的基本构成单元切入,根据其自身的形变,将运动结构的单元归纳为可变形单元与不可变形单元两类,不同的单元类型对应不同的稳定构形.研究表明,构成折叠结构的剪杆单元、刚性面板单元与索杆单元,构成充气膜结构的薄膜,构成开合结构的索膜均属于可变形单元;界面开合、单元重组与整体移动则是基于不可变形单元实现的稳定构形转换.稳定构形间的灵活切换适应了不同用途下的特定要求,在较短时间内实现了构筑物功能的改变与拓展.

摘要：Aim:The correction of nasal tip defects presents many ***’s bilobed flap has been widely used for such repairing defects,but may be complicated by interrupted scars on the nasal *** study evaluates the design principles,results,and advantages of a modified bilobed flap for repairing nasal tip ***:The primary lobe was located between the defect and the cheek,and the second lobe was located in the *** width of the primary lobe was equal to that of the primary *** length of the primary lobe was 10%longer than the distance of the distal defect edge to the pivot point of the *** length of the second lobe was 30%longer than the distance of the distal defect edge to the pivot point of the *** width of the second lobe was 90-100%of that of the primary *** ability to close the defect under minimal tension,the cosmetic appearance,and any complications were ***:This technique was performed in 34 cases;defect size ranged from 0.8 cm×0.9 cm to 1.2 cm×1.8 *** defects were closed under minimal wound tension,all scars were inconspicuous,no obvious complications occurred,and the aesthetic outcomes were considered ***:The modified bilobed flap can provide satisfying outcomes with lower morbidity and inconspicuous *** is simple and suitable for repairing small-to medium-sized defects in the nasal tip.

摘要：起源于英美的营地教育对于青少年的生存能力、领导能力、创造力都有显性的训练提升。文章以青少年营地教育的陶瓷创意设计课程为研究对象,通过研究营地教育中陶瓷设计课程的特征、开发策略以及设计与实践等过程,在培养青少年户外生存能力的同时提升创造力和审美力,将陶瓷设计课程融入营地课程,是传承与发扬传统艺术教育的新思路。

摘要：The polysulfide shuttling and sluggish redox kinetics,due to the notorious adsorption-catalysis underperformance,are the ultimate obstacles of the practical application of lithium-sulfur(Li-S)*** carbon-based and transition metal compound-based material solutions generally suffer from poor catalysis and adsorption,respectively,despite the performance gain in terms of the ***,we have enhanced polysulfide adsorptioncatalytic capability and protected the Li anode using a complementary bimetallic carbide electrocatalyst,Co3 Mo3 C,modified commercial *** this demonstration,the potentials of bimetal compounds,which have been well recognized in other environmental catalysis,are also extended to Li-S *** with this modified separator,a simple cathode(S/Super P composite)can deliver high sulfur utilization,high rate performance,and excellent cycle stability with a low capacity decay rate of^0.034%per cycle at 1 C up to1000 *** at a high S-loading of 8.0 mg cm^-2 with electrolyte/sulfur ratio=6 m L g^-1,the cathode still exhibits high areal capacity of^6.8 m A h cm^-*** experimental analysis and the first-principles calculations proved that the bimetallic carbide Co3 Mo3 C provides more binding sites for adsorbing polysulfides and catalyzing the multiphase conversion of sulfur/polysulfide/sulfide than monometallic carbide Mo2 ***,the modified separator can be reutilized with comparable electrochemical *** also showed other bimetallic carbides with similar catalytic effects on Li-S batteries and this material family has great promise indifferent energy electrocatalytic systems.

摘要：为探究不同浸提条件对大红袍茶汤挥发性风味成分含量及其呈香类型的异同点,本实验以浸提时间、浸提温度、茶水比、浸提次数设计正交方案,采用顶空-固相微萃取-气相色谱-质谱联用(HS-SPME-GC-MS)技术,并结合感官评价,分析茶汤的香气品质及类型。GC-MS数据表明,9种方案检测出55种挥发性风味物质,包括8种共有成分,分别为反,反-2,4-庚二烯醛、苯甲醛、β-环柠檬醛、α-紫罗兰酮、β-紫罗兰酮、4-丁-3-烯-2-酮、水杨酸甲酯、吲哚,主要表现焙香、花果香和清香。主成分分析显示,吲哚、己酸叶醇酯、二氢猕猴桃内酯对茶汤香气的贡献较大,呈特征花果香,并建立香气评价模型为Y=0.4061Y_(1)+0.1112Y_(2)+0.1389Y_(3),9号方案香气评分最高。综合感官评分进行聚类分析,结果表明,3、9号方案各为一类,分别属甜香、果香型,1、5号方案为一类,口感柔和,属于焙香、花果香型。2、4、6、7、8号方案归为一大类,4、7号方案可丰富茶底清香,2、6、8号方案可补充果香,且带青草气。综上,不同浸提方案的挥发性风味物质及呈香类型有明显差异,可通过二、三道茶汤实现茶底香气定向补充,为工业化生产节约成本,为丰富茶底香气提供了风味分析数据和理论参考。

摘要：列车制动模型是设计ATO精确停车控制策略的依据。本文通过分析城轨列车制动系统的构成、特性及其和驾驶员的接口,从面向控制的角度提出适合控制器设计的制动模型以及模型参数的辨识方法。现场实验表明:该模型能够较好描述城轨列车制动系统的动态特性,并且基于该模型的自动停车控制系统在实验中也取得了满意的性能。

摘要：场地是建筑物赖以存在的根基,是触发建筑形式的灵感来源。人文环境是构成场地不可或缺的元素之一,必然与场地中的景观构筑物产生交互作用。提取出人文环境中所涵盖的历史文化、社会结构与行为活动方式三方面因素,分别探讨了其与景观构筑物结构形态的互动关系,并作用和显现于构筑物最终的形态生成。研究结果将为景观构筑物的设计实践提供有益的参考,也为其理论研究拓展新的视角。

摘要：网格技术为分布式计算、实现信息的多元一体化服务提供了基础平台。将网格技术应用到电力市场交易系统设计中,可以很好地体现电力系统的分层分级结构。文中提出了创建基于网格技术及共享信息服务的电力市场交易系统的思想。采用Globus工具包设计了电力市场应用服务,并实现了一套原型系统。所设计的原型系统具有处理分布异构数据、使用分布计算能力、分散存储计算结果的特点,满足了多区域多级电力市场交易的需要。

摘要：A layered simulation model with stairstep contour is built from AutoCAD through extruding each successive section contour having been compensated in dimensions to meet the application requirements of the RP part. In such a way the shape and size tolerance of the RP product could be verified beforehand promptly and precisely.