摘要：This paper presents a detection method for hourglass worm based on follow-up pre-positioning technolo-gy, by establishing theoretical model of the corresponding relation between the movements of the worm and theprobe. The probe coordinate of next sample point is mapped through the actual motion coordinate measured ateach sample point. And then the probe is located to the next sample point in advance by using the precision mo-tion control based on time subdivision. This detection method can realize online servo measurement for machiningerror of hourglass worm and actual space spiral measurement under specific throat radius. The actual surface con-tour of hourglass worm is constructed by helixes in different throat radiuses, then the machining error can be ob-tained by comparing the contour with theoretical model. The detection system, which includes host and slave sub-systems, is designed according to this method.

摘要：目的对比前交叉韧带直接止点不同股骨隧道定位解剖位置单束重建对髌股关节退变的影响。方法选取2016年2月—2021年3月蚌埠市第三人民医院收治的前交叉韧带损伤患者50例的临床资料。根据前交叉韧带重建术中单束重建的股骨隧道定位解剖位置不同分为研究组(在髁间窝外侧壁、原前交叉韧带足印中心方向置入克氏针)26例,对照组(在髁间窝外侧壁过顶点远端7 mm处置入克氏针)24例。自手术治疗起随访两组患者12个月。统计两组患者手术及恢复情况,比较两组患者手术前后疼痛、膝关节功能、膝关节稳定性、髌股关节退变情况,统计术后并发症。结果两组患者手术时间、扶拐下地负重时间、弃拐完全下地负重时间比较,差异均无统计学意义(P>0.05)。研究组与对照组患者术前、术后3个月、术后6个月、术后12个月的疼痛视觉模拟评分(VAS)比较,采用重复测量设计的方差分析,结果:①不同时间点VAS评分有差异(F=12.098,P=0.000);②研究组与对照组VAS评分无差异(F=0.895,P=0.403);③两组VAS评分变化趋势无差异(F=0.715,P=0.456)。研究组患者术前与术后12个月国际膝关节评分委员会(IKDC)评分、Lysholm评分的差值高于对照组(P0.05);研究组患者术后12个月髌股关节退变Recht分级优于对照组(P0.05)。两组患者总并发症发生率比较,差异无统计学意义(P>0.05)。结论不同股骨隧道定位解剖位置的单束重建与髌股关节退变有关,在髁间窝外侧壁、原前交叉韧带足印中心方向置入克氏针的单束重建可使患者获得更佳的膝关节功能及膝关节稳定性,且术后髌股关节软骨退变程度更小。

摘要：由于现代社会科技水平的提高，艺术与技术融合的出现为公共艺术创意设计开辟了崭新的领域，其能够丰富公共艺术创意设计的内容与形式，提升公共艺术创意设计的独特性和新颖性。针对艺术与技术融合对公共艺术创意设计的影响进行分析，并指出了公共艺术创意设计中艺术与技术的运用，旨在为今后开展相关研究提供参考与借鉴。

摘要：复杂系统人机交互是汽车人机交互设计教学中的重要一环。依托用户体验实验室多年智能汽车交互研究背景及设备环境条件,在传统的设计教学模式基础上,以智能座舱交互设计为主题,将认知工作分析方法引入研究生课程。课程中,学生自主选择设计载体及交互对象,以城市空中交通(UAM)智能座舱交互设计为例,学生将实地调研、桌面调研、用户调研与认知工作分析方法相结合,推导界面功能架构图,落实到界面原型设计。此外,在实验室的支持下,基于高保真原型,进行UAM智能座舱HMI可用性测试,证明了设计方案的初步可用性与易用性,并进行设计迭代。学生通过课程实践掌握复杂系统交互设计中的分析方法和工具,为后续自主开展相关研究奠定基础。

摘要：A coordination polymer{[Cd(H_(2)dpa)(bpy)]·3H_(2)O}_(n)(Cd-CP)was designed and hydrothermal synthesized based on 4-(2,4-dicarboxyphenoxy)phthalic acid(H_(4)dpa),2,2'-bipyridine(bpy)and Cd(NO_(3))_(2)·4H_(2)*** structure was characterized by single-crystal X-ray diffraction,powder X-ray diffraction,elemental analysis,and infrared ***-CP belongs to the monoclinic crystal system with the P2_1/c space group and performs in a 1D double-chain *** adjacent double chains further form a 3D supramolecular network structure through hydrogen *** analysis shows that Cd-CP has good thermal *** analysis showed that Cd-CP had good choosing selectively and was sensitive to metal ions(Fe^(3+)and Zn^(2+)),2,4,6-trinitrophenylhydrazine(TRI),and pyrimethanil(Pth).Interestingly,when Cd-CP was used for fluorescence detection of metal ions,it was found to have a fluorescence quenching effect on Fe^(3+)but had an obvious enhancement effect on Zn^(2+).Therefore,we designed an“on-off-on”logic *** addition,the mechanism of fluorescence sensing has been deeply ***:2258625.

摘要：The pore structure of porous scaffolds plays a crucial role in bone *** prevalent bone implant structure in clinical practice is the traditional cubic ***,the traditional cubic structure exhibits sharp edges and junctions that are not conducive to cell adhesion or *** this study,a double gyroid(DG)Ti6Al4V scaffold based on a triply periodic minimal surface(TPMS)structure was devised,and the osseointegration performance of DG structural scaffolds with varying porosities was *** tests revealed that the elastic modulus and compressive strength of DG structural scaffolds were sufficient for orthopedic *** vitro cellular experiments demonstrated that the DG structure significantly enhanced cell proliferation,vascularization,and osteogenic differentiation compared to the cubic *** DG structure with 55%porosity exhibited the most favorable *** vivo experiments in rabbits further demonstrated that DG scaffolds could promote neovascularization and bone regeneration and maturation;those with 55%porosity performed *** the surface area,specific surface area per unit volume,and internal flow distribution characteristics of gyroid and DG structure scaffolds,the latter are more conducive to cell adhesion and growth within *** study underscored the potential of DG scaffolds based on the TPMS structure in optimizing the pore structure design of titanium scaffolds,inducing angiogenesis,and advancing the clinical application of titanium scaffolds for repairing bone defects.

摘要：本研究基于蓄意隐喻理论和转喻扩展理论,采用定量和定性分析相结合的方法,探讨了西方图文药品广告意义的生成机制。研究发现该类广告通常采用特定的图文空间布局,将图像分为中心和边缘两部分。中心图像富含蓄意隐喻和转喻描写手法,展现了“病症”为原型意义及“病症”的治疗、治愈和预防等延伸意义。“边缘”图像则常常展示药品及医药相关元素,并通常与文本搭配呈现。研究显示,图文药品广告意义生成机制是图文互动的隐喻和转喻、图文空间排列以及图文句法关系协调作用的结果。

摘要：针对钠冷快堆二回路系统的具体结构和运行特点,对中间热交换器、直流蒸汽发生器、钠缓冲罐以及泵、管道等设备和部件建立模型,采用FORTRAN语言自主编制了二回路系统热工水力瞬态分析程序SELTAC。利用中国实验快堆的停堆试验数据对所编制程序进行了初步验证。结果表明,程序计算值与试验值趋势一致,最大相对偏差不超过4.34%,吻合程度较好。将验证后的程序与一回路系统程序耦合,分析了某600 MW钠冷快堆在主热传输系统保持排热能力时的紧急停堆工况,得到了二回路系统的瞬态特性,为大型商用快堆电站的设计提供了参考。

摘要：对玻璃配合料预热技术进行了理论分析,并计算了配合料预热过程的热耗;利用GFM软件模拟分析了配合料预热技术对浮法玻璃窑炉能耗、熔化效果和玻璃液质量的影响。窑炉热平衡与数值模拟结果表明,利用烟气余热可将配合料预热至350~450℃,窑炉单耗降低15%,玻璃液质量指标提高10%,同时可以显著提高窑炉熔化能力。

摘要：随着旅游目的地间的竞争日益激烈,目的地管理机构越来越注重在营销内容和形式上凸显自身的独特个性。该研究以当下热门的旅游营销方式——叙事广告为场景,通过3项实验,探索了山水旅游目的地类型(山地vs.水体)如何与广告叙事者性别(男vs.女)进行匹配来增强广告的说服效果,并检验了叙事者-目的地一致性对这一影响的中介作用,以及游客思维模式对其的调节作用。研究发现,山地(水体)型目的地与男性(女性)叙事者匹配带来更好的说服效果;叙事者-目的地一致性在这一影响中充当中介作用;当游客的整体型(分析型)思维启动时,目的地叙事者性别匹配对广告说服效果的影响效应会出现(消失)。该研究是山水旅游目的地情境下目的地叙事者性别匹配对叙事广告说服效果的影响效应和机制的初步探索,相关研究结果可为山水及其他类型旅游目的地营销提供理论参考和实践启示。