Results 81 to 90 of about 65,934 (177)

基于遗传算法的换流变压器滤波装置的优化设计

open access: yesGaoya dianqi, 2007
阐述了新型换流变压器及配套滤波装置的接线方案和滤波器设计特点,在此基础上建立了以初期投资最小为目标函数的滤波装置数学优化模型,在采用遗传算法对优化模型进行优化设计时,考虑到优化模型的特点,采用了混合罚函数法将有约束问题转化成带有罚项的无约束问题的目标函数。最后针对具体的新型高压直流输电平台模型给出了滤波装置优化设计的实例,算例结果验证了该优化设计的正确性。
罗隆福   +5 more
doaj  

A Study on Reverse Supply Chain Inventory Optimization of Dell (China) Company Limited [PDF]

open access: yes, 2015
从满足终端消费者的退货需求角度看,无论是无理由退货还是产品缺陷导致的退货,逆向供应链是现代商业社会的必然产物。高效的逆向供应链管理不仅可以为企业减少由于退货造成的损失,还能树立正面的、担负环境保护责任的绿色企业的良好形象。如何提升逆向供应链的管理水平逐步成为企业不懈的追求,而如何以更快的速度将此类退货“资产”转化为更多的现金流,已成为逆向供应链中最核心的目标之一。论文从优化戴尔(中国)有限公司的逆向供应链库存入手,对于目前库存管理中存在的“在制品、成品流转过慢”、“待库时间过长”、“仓储费用高 ...
鲍旻云
core  

An Ultrasound‐Triggered Antibacterial Hydrogel With Integrated Antioxidant and Angiogenic Functions for Infected Wound Care

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Managing diabetic wounds requires simultaneously addressing their infectious, oxidative, and regenerative impairments. To address this, this study integrates a piezoelectric BiOCl@CuSe heterojunction (PFM‐verified) into an injectable F127/HA hydrogel, creating an ultrasound‐responsive smart dressing.
Jiayan Guo   +5 more
wiley   +1 more source

Study and Application of New Analytical Methods for Determination of Trace Dissolved Aluminum in Natural Waters [PDF]

open access: yes, 2016
铝(Al)是生物地球化学中备受关注的金属元素之一。虽然溶解态Al(DissolvedAl,dAl)在环境水体中的浓度较低,但可以示踪多种生物地球化学过程;还可以通过对硅藻的调控作用,影响硅元素的生物地球化学循环,进而影响海洋生态系统。现有的痕量dAl分析方法仍存在种种不足,制约着Al的相关研究的深入发展。因此,水体中痕量dAl的分析方法需要不断发展和突破。鉴于此,本研究研发了4种灵敏度高、稳定性好、自动化程度高、抗污染能力强,可用于现场快速检测的环境水体中dAl的分析方法,主要内容和结果如下: (1 ...
周挺进
core  

Metal‐Doped Carbon‐Based Nanomaterials: Photothermal Mechanism Innovation and Precision Therapy Advancement in Antibacterial and Antitumor Applications

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Metal‐doped carbon‐based nanomaterials (M‐CNM) play a strategically significant role in next‐generation precision antibacterial and antitumor therapies, as they integrate synergistic photothermal ablation, catalytic reactive oxygen species (ROS) generation, and multimodal imaging capabilities. However, their clinical translation is hindered by
Pengxiang Liu   +5 more
wiley   +1 more source

A research on the performance management system optimization of the first level branch of Suzhou B Bank [PDF]

open access: yes, 2016
随着中国经济进入“新常态”,转变发展方式、加快结构调整,成为经济运行的“主 旋律”。而金融活动与经济运行关系最为密切,金融活动质量直接影响到经济活动的绩效, 商业银行作为金融活动的中介机构,在经济活动中占据着十分重要的位置。随着经济金 融化程度的不断加深和经济全球化的迅速推进,商业银行良好的运作状况对于经济和社 会的健康发展起到了极为重要的作用。商业银行之间的竞争日趋激烈,在当前情况下, 规范的绩效管理体系成为发展的关键,通过建立有效的员工绩效管理体系,使银行充分 发挥出人力资源方面的优势 ...
邵静
core  

From Molecular Motion to Macroscopic Function: Tailoring Tetraarylethylene Supramolecular Architectures for Aggregation‐Induced Emission and Wave Absorption

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Integrating light emission and electromagnetic wave (EMW) absorption into a single material opens up possibilities for multienvironmental applications. Herein, we propose a novel “molecular engineering‐pyrolysis conversion” strategy to construct a bifunctional system with tunable photoluminescence and efficient EMW absorption performance.
Renjie Wang   +7 more
wiley   +1 more source

基于多层降维与FOA优化的接地网腐蚀故障诊断

open access: yesDianci bileiqi, 2016
针对变电站接地网腐蚀故障的精准定位与诊断问题,将果蝇优化算法运算速度快、全局收敛效果好的优点与电阻腐蚀倍数优化相结合,提出基于多层降维与果蝇优化的接地网腐蚀故障诊断方法。该方法以电压法与电阻法作为诊断机理,以果蝇优化算法作最优解全局搜索,结合多层降维解决接地网支路个数多的问题,降低优化复杂度,提高优化速度。以60条支路、36个节点的变电站接地网为例进行方法检验对比,结果表明,以果蝇优化算法为基础的电压法和电阻法均能取得较好的腐蚀故障诊断效果,电阻法的平均诊断误差略低于电压法,诊断效果较好,但时间代价更大。
陈海燕
doaj  

Research on the Parent-subsidiary Corporation Management and Control System of YY Group [PDF]

open access: yes, 2016
随着我国市场经济的发展和国企改革不断深化,国有企业的集团化成为必然趋势。提高国有企业集团化后的管理效率和经营业绩,避免大企业病的产生,构建科学有效的集团管控体系,是国有企业集团化后实现持续健康发展的重要保证。 YY集团是一家以金融投资、资产经营为主业的地方国有集团公司。成立6年来,YY集团迅速发展壮大,但其正处于集团化的初始阶段,由于发展阶段及体制上的原因,公司存在着治理结构不够完善、母子公司管控不到位、资源配置效率不高、整体竞争力不强等诸多问题,导致集团内部管理成本和交易成本较高 ...
袁俊
core  

Complexion‐Mediated Dislocation Transfer Enables Exceptional Strength‐Toughness Synergy in Multicomponent‐Alloy Bonded Hardmetal

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT The inherent brittleness of hardmetals stems from the rigid covalent bond in the ceramic matrix and the sharp ceramic/metal interface, which restricts the nucleation and motion of dislocations. In this study, a novel strategy is proposed to activate significant dislocation behaviors in the WC matrix by employing a non‐equiatomic CoNiFeCr ...
Cheng Qian   +9 more
wiley   +1 more source

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