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关键词： 荷兰风格派   艺术设计   几何抽象   现代设计   设计创新  

摘要： 在近代众多艺术设计流派当中,荷兰风格派艺术无疑是被借鉴和运用最多的流派之一,它强调极致的抽象与简化,追求简洁的秩序和和谐的内涵。它在众多设计领域,特别是在建筑设计、室内设计领域,取得了极高的艺术成就。通过梳理风格派艺术的起源、发展及其核心特征,探讨其在中外现代设计中的应用,并分析对当代设计的深远影响。同时,结合我国设计现状,提出如何借鉴风格派艺术的创新思路,以推动我国艺术设计的进一步发展。

关键词： 现代餐饮业   菜品研发   全球化   中西美食文化  

摘要： 随着全球化进程不断加深,中西饮食文化的交流与融合已成为当代餐饮行业不可逆转的发展潮流。这种跨地域、跨风味的理念碰撞与技艺结合,既拓展了菜品研发的范围,更新了大众的饮食审美与消费认知,也为餐饮产业的创新转型、品牌升级及市场多元化发展提供支撑与活力。

关键词： 铁路信号设备   精细化养护   运维流程   效率提升  

摘要： 铁路信号设备作为保障列车运行安全、提升运输效率的核心基础设施,其运维质量会左右铁路运输系统的稳定以及可靠运行。传统粗放式养护模式与现代铁路信号设备高精度、高稳定性的运行需求不相适配,极易出现过度检修与检修不足并存、故障预警能力薄弱之类的问题,这成了铁路运维工作质量控制的重点与难点。文章先分析铁路信号设备养护的现状及存在问题,归纳出技术赋能、管理升级、人员培育的三维效率提升策略,从而给铁路信号设备运维工作赋予技术支持。

关键词： 效率至上   高效学习   从前慢   生活本真   高效工作  

摘要： 《从前慢》里“车马邮件都慢”的字句,总在当下被反复吟咏。短短一句话里,藏着人们的期许和对生活的品味。但与此同时,“高效”正渐渐成为现代生活的绝对准则。高效学习刷完知识点,高效工作完成KPI,高效社交积累人脉,甚至放松娱乐都要追求“高效解压”。我们步履匆匆,随着车马邮件一起变快,却偏偏丢失了“慢下来”感受生活的能力。

关键词： 创伤后僵硬性胸腰椎后凸畸形   腰椎前凸   关节突退变   腰椎间盘退变   病程   腰椎曲度  

摘要： 背景:目前针对创伤后僵硬性胸腰椎后凸畸形的研究多集中于整体矢状面平衡及手术干预,而病程对腰椎代偿性曲度改变及退变影响尚不明确。目的:探讨创伤后僵硬性胸腰椎后凸畸形患者病程对腰椎退变的影响及潜在机制,为优化治疗策略提供依据。方法:回顾性分析79例创伤后僵硬性胸腰椎后凸畸形患者的临床和影像资料,根据病程分为2组,病程≤5年为A组(n=40),病程>5年为B组(n=39)。采用X射线图像测量伤椎局部后凸角、伤椎及相邻上下椎体后壁高度、腰椎前凸角、各节段腰椎椎间隙角度、骶骨倾斜角,通过Weishaupt-CT分类系统评估患者各节段腰椎小关节退变程度,Pfirrmann-MRI分级评估各节段椎间盘退变状况。比较两组患者腰背痛目测类比评分、Oswestry功能障碍指数、SRS-22评分量表及美国脊髓损伤协会脊髓损伤分级。分析病程对创伤后僵硬性胸腰椎后凸畸形患者临床症状及影像学特征的影响。结果与结论:①两组患者年龄、性别、腰背痛目测类比评分、骨折部位、骨折形态和美国脊髓损伤协会分级比较差异无显著性意义(P>0.05);A组患者SRS-22评分亚总分显著高于B组(P<0.05);B组Oswestry功能障碍指数显著高于A组(P<0.05);②B组伤椎后凸角度、腰椎前凸角度、L_(4/5)节段椎间隙角度显著大于A组(P<0.05);③A组L_(1/2)、L_(2/3)、L_(3/4)、L_(5)/S_(1)椎间隙角度及骶骨倾斜角与B组相比差异无显著性意义(P>0.05);④B组L_(3/4)、L_(4/5)、L_(5)/S_(1)节段关节突退变程度显著重于A组(P<0.05);B组L_(2/3)、L_(3/4)、L_(4/5)、L_(5)/S_(1)椎间盘退变程度显著重于A组(P<0.05);⑤Pearson相关性分析结果显示,B组内病程与伤椎局部后凸角度及腰椎前凸角度呈正相关(r=0.335,0.418,P<0.05);⑥创伤后僵硬性胸腰椎后凸畸形患者在长期代偿过程中,会导致腰椎前凸加大、腰椎退变加速;在腰椎曲度代偿中,L_(4/5)为主要代偿节段,进行手术矫正时应特别注意下腰椎的曲度纠正。

关键词： 口腔美学修复   全瓷材料   美学性能   色差   透光性   微创修复技术   CIEL^(*)a^(*)b^(*)   颜色补偿  

摘要： 背景:选择合适的陶瓷材料对口腔全瓷美学修复尤为重要。在口腔修复体美学性能研究中,多使用色差值和透光性作为评价指标,影响全瓷修复体色差和透光性的因素主要有陶瓷材料的种类、色调、厚度、加工工艺以及基牙颜色和粘接剂等。目的:探究材料种类及厚度对全瓷修复体美学性能的影响。方法:选取各类可切削陶瓷中6种代表性的材料(常规氧化锆ZR-ST、树脂基陶瓷RC、高透氧化锆ZR-TT、白榴石增强玻璃陶瓷LE、二硅酸锂玻璃陶瓷LD及长石质瓷FP),每种材料分别制备成0.8,1.0,1.5 mm厚的10.0 mm×12.5 mm长方体陶瓷试件,进行对应的表面处理后与树脂试件(代表基牙)粘接制成陶瓷-树脂复合体试件,测算粘接前后的CIEL^(*)a^(*)b^(*)、色差值ΔE及透光率值。结果与结论:①当基牙厚度未达到无限光学厚度时,陶瓷材料的种类和厚度共同影响修复体的颜色和透光率值。当陶瓷试件厚度不超过1.0 mm时,与树脂片粘接后的颜色普遍向蓝红趋近;当陶瓷试件厚度为1.5 mm时,与树脂片粘接后的颜色普遍向蓝绿趋近,提示在全瓷修复体比色时可通过颜色预补偿优化美学匹配。②除厚度1.5 mm ZR-ST陶瓷试件外,粘接后各组陶瓷试件与树脂片之间的色差值ΔE均低于5,0.8 mm ZR-ST陶瓷试件与树脂片之间的色差值ΔE接近3,1.0 mm ZR-TT陶瓷试件与树脂片之间的色差值ΔE小于3,提示在微创修复过程中,若患牙透光率不高且美学修复空间不足、对材料强度要求高时,ZR-TT和ZR-ST陶瓷可能是潜在的选择。③陶瓷试件的透光率值在粘接后降低,并随陶瓷厚度的增加显著降低。RC陶瓷试件的透光率值高,粘接后与树脂片之间的色差值ΔE接近3,光学性能出色。

关键词： 隧洞爆破   构筑物的动态响应   显式动力学   回归分析  

摘要： 评估河北省某水利工程隧洞钻爆施工对邻近灌注桩的影响,使用数值模拟结合现场试验的研究方法,建立了“高边坡-灌注桩-隧洞”整体有限元模型对爆破设计进行分析,并测试了灌注桩在爆破前后的桩身波速。现有爆破方案下桩基应力和峰值质点振速均控制在规范限值内,波速无明显变化。根据不同的爆破参数下的桩身数据,提出了“药量-爆心距-PPV”回归方程,为类似工程隧洞钻爆的安全评估与爆破优化提供了参考。

关键词： Solid state lasers  

摘要： Significance Compared with other types of lasers, semiconductor lasers offer several advantages, including compact size, lightweight structure, high efficiency, long operational lifetime, excellent stability, broad wavelength coverage, tunability, and potential for monolithic integration. They are widely used in laser processing, laser pumping, laser communication, medical aesthetics, national defense and military industry, data storage, and other fields. 808 nm high-power semiconductor laser products are located in the upper and middle reaches of the industrial chain. Their most important application is to obtain 1064 nm laser output as the pump source of Nd∶YAG solid-state lasers, which can be used in laser weapons, laser rangefinders, laser irradiators, and other equipment, as well as in laser welding and precision measurement. In the medical field, 808 nm high-power semiconductor lasers can be used in the treatment of skin diseases, laser aesthetics, eye surgery, and so on. In the field of scientific research and instruments, diode laser-pumped solid-state lasers and intracavity frequency doubling technology can obtain visible and ultraviolet laser output. Nowadays, with the continuous breakthroughs in semiconductor laser technology in power, efficiency, brightness, lifetime, multi-wavelength capability, modulation rate, and other aspects, the market scale of high-power semiconductor lasers has also increased rapidly. Most importantly, compared with lamp pumping, the output laser of 808 nm high-power semiconductor lasers has higher frequency stability and narrower linewidth, and the pump efficiency is significantly improved. At the same time, it also has the advantages of high stability, long life, small size, light weight, and easy integration and maintenance. The quasi-continuous current driving mode can also significantly reduce the thermal accumulation effect of the device and effectively improve the beam quality of the pumped solid-state laser. With the wid

摘要： 在当今竞争激烈的学术环境中,发表高质量的研究成果只是第一步.更重要的是,如何让您的研究被更多人看到并产生影响力.提高您所发表文章的使用率和读者数量对于提升您的研究知名度至关重要.要做到这一点,作者需要在文章撰写时,确保所有的研究内容都能在谷歌和其他搜索引擎的搜索结果中被看到并获得较高的排名.搜索引擎优化(SEO)是保持研究成果长期使用的关键因素之一.作者可以通过以下技巧在文章层面优化搜索结果方面发挥关键作用.

关键词： Flow fields  

摘要： Flow fields around rectangular cylinders with different aspect ratios have different flow patterns. Three-dimensional large eddy simulations of ffow around the 1 ： 1 rectangular cylinder and 5 ： 1 rectangular cylinder at a Reynolds number of 2 000 were canred out to deeply understand the effect of corner chamfers on aerodynamic force characteristics and ffow field of rectangular cylinders. The corner chamfered ratios " = C/D = 0%， 10% and 20% were selected to investigate，in which C and D are the corner chamfered size and the cylinder width，respectively. The lift and drag coefficients % Strouhal number % pressure coefficients % reattachment length and wake length were analyzed in detail. The results indicate that the €££€" of corner chamfers on aerodynamic force characteristics and ffow field of a rectangular cylinder is influenced by aspect ratio. As the chamfered ratio increases % the 1 : 1 and 5 : 1 rectangular cylinders exhibit a consistent trend in the mean drag coefficient variations;however % significant differences emerge in the trends of the fluctuating lift coefficients and Strouhal numbers. By introducing corner chamfers % the mean preesure coefficients on the side surfaces of the 1 : 1 rectangular cylinder increase while the fluctuating 卩优巳巳口优 coefficients decrease;the peak position of the 卩优巳巳口优 coefficients on the side surfaces of the 5 : 1 rectangular cylinder move upstream. Both primary side-surface bubbles of the 1 : 1 rectangular cylinder and main bubbles of the 5 : 1 rectangular cylinder are affected by the corner chamfer % showing a shrinking trend. However % the variation trends of the wake region length for the 1 : 1 and 5 : 1 rectangular cylinders are not the same. The instability of the attached ffow may be the reason for the difference of aerodynamic force characteristics of the 1 : 1 and 5 : 1 rectangular cylinders under chamfering. © 2026 Chinese Vibration Engineering Society. All rights reserved.