摘要：The utilization of prefabricated light modular radiant heating system has demonstrated significant increases in heat transfer efficiency and energy conservation *** prefabricated building construction,this new heating method presents an opportunity for the development of comprehensive *** parameters for evaluating the effectiveness of such a system are the upper surface layer’s heat flux and *** this paper,thermal resistance analysis calculation based on a simplified model for this unique radiant heating system analysis is presented with the heat transfer mechanism’s *** results obtained from thermal resistance analysis calculation and numerical simulation indicate that the thermal resistance analysis method is highly accurate with temperature discrepancies ranging from 0.44℃ to−0.44℃ and a heat flux discrepancy of less than 7.54%,which can meet the requirements of practical engineering applications,suggesting a foundation for the prefabricated radiant heating system.

摘要：来源:https://***/en/winner-ranking/project/lucusta/193593修剪机是常见的园艺工具之一,它是一种用于园林树木的剪刀,从小型和精细切割修剪机到大型电动修剪机,有各种各样的尺寸。这款园艺修剪机对龙虾爪进行仿生设计,用于修剪园林树木,助力用户成为修剪园林的力量型选手。

摘要：日益显著的气候变化对新的城市设计模式提出了巨大的挑战,我们需将如能源、水资源的使用效率等城市系统的性能元素纳入考虑范围。传统的城市设计模式注重形式的设计过程,却缺乏性能维度的考量。地理设计是一种新兴的方法,该方法更加强调系统性思维、数字技术与地理环境之间的联系。本文介绍了该领域大规模合作研究第一阶段的研究成果,并进一步提出了一种用于区域规模城市设计的地理设计方案,以整合可再生能源生产系统、能源消耗系统及雨水管理系统等,并兼顾了人类的城市生活体验。该方案结合了地理信息系统(GIS)、参数化建模技术和多学科设计优化(MDO)工具,可实现协同设计决策。为了实现近零能耗城市实验区的设计,该方案通过了测试案例的反复推演与调整。我们最终的方案有如下3个特点:(1)集成的地理设计和参数化设计:方案采用参数化设计方法,通过自定义程序算法生成焦点尺度的原型,并应用地理设计来评估设计方案的性能;(2)关注设计流程:方案阐述了设计过程中的问题定义标准、信息的选择标准以及设计决策的制定标准;(3)多目标优化:测试案例通过性能建模生成指标,并通过多目标计算实验得出原理,从中我们可以得知如何改进该设计。本文总结了基于多学科设计优化(MDO)工具的城市设计方案和基础设施系统建模方案,并描述了随后的实施步骤。

摘要：A numerical model was established to predict and optimise the chemical cleaning process of Polyvinylidene Fluoride(PVDF)Ultra filtration(UF)membranes with the results from the experiment that applied the Response Surface Method(RSM)and Central Composite design(CCD).The factors considered in the experimental design were sodium hydroxide(NaOH)concentration,sodium hypochlorite concentration(NaClO),citric acid concentration and cleaning *** interactions between the factors were investigated with the numerical *** acid(20 mg·L-1)was used as the model foulant,and chemical enhanced back flush(CEB)was employed to simulate the chemical cleaning *** concentrations of sodium hydroxide,sodium hypochlorite,citric acid and cleaning duration tested during the experiments were in the range of 0.1%–0.3%,100–300 mg·L-1,1%–3%and 0.5–1.5 h,*** the variables,the sodium hypochlorite concentration and the cleaning duration showed a positive relationship involving the increased ef ficiency of the chemical *** chemical cleaning ef ficiency was hardly improved with increasing concentrations of sodium ***,the data was sharply decreased when at a low level of sodium hydroxide *** total,54 sets of cleaning schemes with 80%to 100%cleaning ef ficiency were observed with the RSM model after calibration.

摘要：在过去10年中,探索凝聚态系统中的演生粒子一直引起人们强烈的研究兴趣.演生粒子是出现在晶体能带简并附近的低能激发模式.自其提出以来,就一直受到人们的广泛关注,并在真实晶体材料和人工设计系统中被广泛报道.然而,至今学界一直还没有得到晶体体系中,所有可能实现的演生粒子的完整图像.本文通过系统的对称性和模型分析,首次完成了三维晶体中所有可能演生粒子的完整列表.该列表不仅包括了固体中电子体系的自旋粒子,也包括声子和人工虚拟晶体等体系中的无自旋粒子.此外,该工作也给出了演生粒子、对称性条件、有效模型和拓扑特征之间的详细对应关系.演生粒子百科的建立结束了在晶体体系中对新的演生粒子的搜寻研究,并为在物理系统中实现相关演生粒子提供了极其具体的指导.

摘要：From 1999, with the rapid expansion of enrollment scale, colleges have experienced fast development and construction of new campuses. However, the urgency of the demand for campus space at that time led to the shortcomings of paying more attention to speed than connotation during the construction of the new campus. Even now the evaluation of new campuses which have been used for nearly twenty years and whether the space of new campuses has played its due role will affect the display of the heritage and temperament of colleges. This paper uses the typical spatial cognitive concept—spatial image to analyse the elements of spatial images on campuses, summarizes the perceptions of teachers and students towards the space of four new campuses in Chengdu through questionnaire survey and analysis, puts forward the principles of campus space design and the strategies of classification design, and intends to take spatial images as the research cut-in point to provide new ideas and suggestions for the design and improvement of campus space from the perspective of users.

摘要：Recent development and recognition methods of raster to vector conversion for engineering drawings are presented. The advantages and disadvantages of all existing models are analyzed. Some research challenges and future directions are discussed.

摘要：对中国品牌形象的国际化设计进行研究。用视觉人种志的研究方法,通过笔者在欧洲市场对中国品牌的形象设计现状进行研究,得出经济全球化、信息全球化的背景下,中国品牌进入全球市场,要实现品牌价值的提升,从而达到"Made in china"到"design in china"的目的,在这个过程中,视觉传达设计到了很重要的作用。有效提升中国品牌形象设计的方法是对品牌名称进行翻译和对品牌形象进行Redesign。在当代视觉审美语境下,品牌形象的视觉传达设计应将中国审美与西方审美相融合,最终实现品牌形象的国际化设计。