检索结果-南通市图书馆

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

基于混合蒙特卡洛树搜索的电缆盘装箱方法

计算机集成制造系统 2025年第1期31卷 355-366页

作者：肖泽远林剑浙江财经大学信息技术与人工智能学院浙江杭州310018

电缆盘装箱问题广泛存在于线缆企业的生产实际中,本质上属于带载重约束和正交旋转的多箱型二维装箱问题。针对电缆盘装箱问题,建立以装箱成本最小化为目标的混合整数规划模型,提出一种混合蒙特卡洛树搜索(HMCTS)算法。在蒙特卡洛树搜索... 详细信息

电缆盘装箱问题广泛存在于线缆企业的生产实际中,本质上属于带载重约束和正交旋转的多箱型二维装箱问题。针对电缆盘装箱问题,建立以装箱成本最小化为目标的混合整数规划模型,提出一种混合蒙特卡洛树搜索(HMCTS)算法。在蒙特卡洛树搜索框架下,通过融入高效邻域搜索策略,寻找得到较优的箱子选择方案,并确定每个箱子中货物的装箱位置和方式。在此基础上,构建电缆盘装箱问题的松弛模型,有效降低算法的计算成本。基于线缆企业生产实际中6种不同规模的数据集,对HMCTS算法进行仿真实验和对比分析,结果表明所提算法在求解电缆盘装箱问题中具有较高的有效性和鲁棒性。

关键词：蒙特卡洛树搜索混合整数规划模型松弛模型电缆盘装箱问题多箱型

在线全文

学校读者我要写书评

暂无评论

区域职业教育均衡发展的困境与应对策略

教育理论与实践 2025年第3期45卷 28-32页

作者：林建孙健西南大学教育学部重庆400715 惠州学院高等教育研究中心广东惠州516007

推动区域职业教育均衡发展是建设教育强国和创新型国家的内在要求,是提升新质生产力、推动职业教育高质量发展的战略需求。当前区域职业教育均衡发展的困境有:《职业教育法》立法体系偏向宏观层面,职业教育经费投入体制呈现条块化分割,... 详细信息

推动区域职业教育均衡发展是建设教育强国和创新型国家的内在要求,是提升新质生产力、推动职业教育高质量发展的战略需求。当前区域职业教育均衡发展的困境有:《职业教育法》立法体系偏向宏观层面,职业教育经费投入体制呈现条块化分割,区域经济发展不均衡带来递次影响。推进区域职业教育均衡发展需要有效的战略统筹作为保障,应该做到丰富《职业教育法》实操性内容;减小区际职业教育投入差别,加大中央和省级财政拨款力度;建立基于区域职业教育均衡发展的循环沟通协调机制。

关键词：区域职业教育均衡发展财政拨款协调机制

Wear evaluation method of drilling shaft sinking hob based on rock slag morphology and rock abrasiveness

在线全文

学校读者我要写书评

暂无评论

Meitan Xuebao/Journal of the China Coal Society 2025年第1期50卷 115-131页

作者： Cheng, Hua Xie, Bao Yao, Zhishu Rong, Chuanxin lin, jian School of Civil Engineering and Architecture Anhui University of Science and Technology Huainan232001 China School of Resource and Environmental Engineering Anhui University Hefei230601 China Anhui Province Key Laboratory of Intelligent Geotechnics and Disaster Prevention Anhui Jianzhu University Hefei230601 China

Aiming at the serious wear problem of hob in deep and large vertical shaft constructed by drilling method in Jurassic strata in western China, a method for evaluating the wear of hob in drilling method is put forward, taking the drilling method of sinking shaft in a coal mine in the west as the research object. Firstly, based on field investigation, the wear degree and wear distribution characteristics of hob in different strata are analyzed, and relevant quantitative indexes are put forward. Secondly, the rock slag of shaft drilling rig is pretreated on site, and the image recognition method is used for post-processing, and the geometric morphology of rock slag is statistically analyzed, and its cumulative distribution law is described by exponential distribution function. Then, taking Pearson coefficient as the correlation evaluation index, the influence of rock slag particle distribution and mineral composition on hob wear index is explored, and the causes of easy wear of drilling shaft sinking hob in western China are expounded. Finally, based on the correlation analysis method, several main influencing parameters are selected, and the prediction formula of hob wear index for different rock strata is developed by using nonlinear fitting tools, and the evaluation method of replacing hob on site is put forward. The results show that: the wear of drilling hob is closely related to the geological conditions of rock strata, and the number of hob consumed per unit footage in different strata is in the order of argillaceous cemented muddy stratum > calcareous cemented mud, sand interbedded stratum ≈ calcareous and iron cemented sandy stratum > extremely weak cemented sandy stratum;The deep grinding area of shaft sinking cutterhead in western drilling method is easy to concentrate on B, C and D cutter rings, while the center cutter and its vicinity are mostly shallow grinding areas;The statistical characteristics of geometric morphology of rock slag can indirectly refle

关键词： Exponential functions

Impact of Energy Transition on CO2 Emissions in China's Cities

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Geographical Science 2025年第2期 250-261页

作者： DANG Niu WANG Qiang KWAN Mei-po lin jian School of Geographical Sciences Fujian Normal University Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education School of Geographical Sciences Fujian Normal University Department of Geography and Resource Management and Institute of Space and Earth Information Science The Chinese University of Hong Kong School of Geography Nanjing Normal University

Reducing global carbon dioxide（CO2） emissions is essential for meeting climate change mitigation goals, especially in urban areas. In this regard, this study used CO2emissions and energy transition data from 296 China's cities in 2020 and the extended Stochastic Impacts by Regression on Population, Affluence, and Technology（STIRPAT） model to explore the relationship between energy transition and CO2emissions at the city-scale. The findings indicate a spatial distribution of energy transition magnitude that is high in the west and low in the east, which does not align with economic status and total CO2emissions, posing significant challenges for China's energy transition and urban CO2reduction. The STIRPAT model reveals that urban CO2emissions are significantly driven by increases in population size, levels of economic development, and the expansion of transportation infrastructure. Conversely, investments in science and education, the expansion of the tertiary sector, and the disruptive effects of the COVID-19（Coronavirus Disease 2019） pandemic are associated with notable reductions in CO2emissions. Specifically, the analysis estimates that a 1.00% increase in the energy transition degree is associated witha 0.90% decrease in urban CO2emissions. However, regional assessments underscore considerable spatial heterogeneity in the energy transition effect, with CO2reduction benefits being less pronounced in central and western cities. These findings suggest that future clean energy initiatives should be strategically concentrated in eastern China, where the demand and potential for CO2mitigation are greater. This study deepens the understanding of the complex relationship between energy transition and urban CO2emissions, offering valuable insights to inform targeted policy interventions for carbon reduction at the city level.

关键词：

高校教师队伍“赛教互促”培养模式实践探索——以福建师范大学为例

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

福建教育学院学报 2025年第1期26卷 57-60页

作者：林健丹福建师范大学福建福州350117

我国高等教育正处在深化综合改革、实现内涵发展的关键时期,这是在我国经济和教育进入发展新常态的背景下取得的。加快推进本科高水平教育建设,实现创新型人才培养,开展创新型人才培养模式研究,是当前最重要也是最紧迫的任务。依托校级... 详细信息

我国高等教育正处在深化综合改革、实现内涵发展的关键时期,这是在我国经济和教育进入发展新常态的背景下取得的。加快推进本科高水平教育建设,实现创新型人才培养,开展创新型人才培养模式研究,是当前最重要也是最紧迫的任务。依托校级慕课型教学团队,探索开展教师队伍培养模式的改革与实践,通过实证研究“教—学—赛”的闭环模式执行的教学效果,建构了具有综合性本科高校特色、较强区域影响力的“赛教互促”的教师队伍培养模式。

关键词：赛教互促教师队伍培养模式

Intractable subdural effusion after decompressive craniectomy for traumatic brain injury:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2025年第17期13卷 59-66页

作者： Ming-jian lin Department of Neurosurgery Gaozhou People’s HospitalMaoming 525200Guangdong ProvinceChina

BACKGROUND Traumatic subdural effusion is a common complication of traumatic brain injury,especially after decompressive craniectomy(DC).For neurosurgeons,early diagnosis and timely treatment are particularly important,which can help improve patient prognosis and enhance quality of *** SUMMARY A 47 year old male underwent DC for traumatic brain *** surgery,he developed stubborn subdural effusion(SDE)on the contralateral side and underwent multiple subdural drilling and drainage surgeries,but only temporarily improved the patient’s *** the final cranioplasty,the contralateral SDE completely *** patient did not experience any new contralateral neurological dysfunction,and the Glasgow prognostic score was 11 points(E4V1M6).CONCLUSION For neurosurgeons,accurate assessment of the condition is necessary when treating patients with stubborn SDE after DC surgery,and timely cranioplasty can be performed to avoid multiple *** is a safe and effective surgical method for treating traumatic subdural effusion.

关键词： Traumatic brain injury Traumatic subdural effusion Decompressive craniectomy Cranioplasty Case report

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

福佑路排水管道预防性修复工程设计要点分析

建材世界 2025年第1期46卷 89-92,108页

作者：王坚麟上海市市政规划设计研究院有限公司上海200031

论文以福佑路排水系统预防性修复工程为研究对象,探讨其设计要点。福佑路位于上海豫园地区,周边排水系统属于典型的老旧城市排水系统,面临系统老化和设计不足等问题。文中提出了非开挖技术的排水管道预防性修复方案,以期改善排水系统的... 详细信息

论文以福佑路排水系统预防性修复工程为研究对象,探讨其设计要点。福佑路位于上海豫园地区,周边排水系统属于典型的老旧城市排水系统,面临系统老化和设计不足等问题。文中提出了非开挖技术的排水管道预防性修复方案,以期改善排水系统的可靠性和效率。通过对福佑路排水系统进行综合评估,包括排水管道的现状调查、CCTV(管道视频,Closed Circuit Television)检测和修复指数评估,确立了修复工程的具体方案。同时,还对现场检查井进行了快速修复,以保证整体工程的快速完成和长期效能。

关键词：城市更新排水工程预防性修复非开挖技术

Theoretical analysis on capillary adhesion of microsized plates with a substrate

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2010年第2期26卷 217-223页

作者： jian lin Liu Department of Engineering Mechanics China University of Petroleum 266555 Qingdao China

The stiction of a thin plate induced by the capillary force has attracted much attention in the broad range of applications. A novel method is presented to calculate the capillary adhesion problem of the plate through analytical method. The expressions of the surface energy, the strain energy and the total potential energy of the plate-substrate system have been analyzed and delineated. By means of continuum mechanics and the principle of minimum potential energy, the governing equation of the plate with an arbitrary shape and the corresponding transversality boundary condition due to the moving bound have been derived. Then the critical adhesion radius of the circular plate has been solved according to the supplementary transversality condition. Thus the deflections of the plates are analytically calculated with different critical adhesion radii. The results may be beneficial to the engineering application and the micro/nanomeasurement.

关键词： Surface energy · Principle of least potentialenergy · Transversality condition · Critical adhesion radius·Deflection

在线全文

学校读者我要写书评

暂无评论

基于稀疏贝叶斯优化的翼型设计可解释性研究

空气动力学学报 2025年第1期43卷 22-33页

作者：林健吕宏强黄增辉刘子敬虞建刘学军南京航空航天大学计算机科学与技术学院模式分析与机器智能工业和信息化部重点实验室南京　211106 南京航空航天大学航空学院南京　210016 中国商飞上海飞机设计研究院上海　201210 中国航空研究院北京　100012

贝叶斯优化框架具有优化效率高、效果好等特点，适合解决高维黑盒优化问题，适用于飞机翼型设计领域。然而其优化过程不透明，难以直观理解机器优化结果和翼型典型物理特征之间的联系，如何解释贝叶斯优化进程仍然是一个挑战。针对这一... 详细信息

贝叶斯优化框架具有优化效率高、效果好等特点，适合解决高维黑盒优化问题，适用于飞机翼型设计领域。然而其优化过程不透明，难以直观理解机器优化结果和翼型典型物理特征之间的联系，如何解释贝叶斯优化进程仍然是一个挑战。针对这一问题，本文提出了一种基于稀疏贝叶斯优化框架的翼型优化可解释性方法，使用具有物理意义的典型几何特征参与优化进程，在贝叶斯优化过程中对翼型特征进行稀疏，同时获得可解释性信息。在以RAE2822为基准翼型的超临界翼型优化算例上验证该方法。实验结果表明，该方法在优化气动性能的同时尽可能地减少了翼型设计维度，使其在保证气动性能良好的情况下具备了一定的可解释性，能直观地了解翼型各参数对优化目标的影响程度，辅助翼型设计人员进行决策和判断。

关键词：贝叶斯优化可解释性翼型物理特征翼型设计维度稀疏