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

基于视频游戏的空间能力测评

心理科学进展 2025年第1期33卷 11-24页

作者：尚俊杰石祝沈科杰北京大学教育学院学习科学实验室北京100871

空间能力是个体对客体或空间图形在头脑中进行识别、编码、贮存、表征、分解组合和抽象概括的能力,是个体理解自身所处环境并解决问题的认知基础。准确、便捷、有效地测评空间能力,对增强STEM教育教学水平和人才培养质量都具有重要意义... 详细信息

空间能力是个体对客体或空间图形在头脑中进行识别、编码、贮存、表征、分解组合和抽象概括的能力,是个体理解自身所处环境并解决问题的认知基础。准确、便捷、有效地测评空间能力,对增强STEM教育教学水平和人才培养质量都具有重要意义。由于空间能力受多因素共同作用,具有复杂性、多维度、内隐性的特点,使得利用计算机评价空间能力比较困难。本研究旨在准确、有效、大规模地测评空间能力,将使用多模态学习分析方法探索学习者空间认知行为表现特征,并基于视频游戏环境研发空间能力隐形测评关键技术与工具。具体包括:1)构建空间能力内在表征框架和评价指标体系;2)基于多模态学习分析构建学习者空间能力行为表现模型;3)探索视频游戏影响空间能力的关键因素,并使用游戏引擎开发基于视频游戏的测评工具;4)使用以证据为中心的设计框架和贝叶斯网络模型,开发并部署能够推断和预测空间能力的测评算法;5)在实验室和真实课堂情境开展实证研究,验证测评工具有效性。研究成果将有利于理解人类空间认知过程和行为表现,拓展和丰富空间能力相关理论,并为大规模数字化测评提供关键技术支撑。

关键词：基于游戏的测评空间能力多模态学习分析游戏化学习隐形测评

Primary parenchymal squamous cell carcinoma of the kidney: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4期13卷 34-40页

作者： Zhi-Hui Zheng Bo Shao Chao-Min Xu Ke Wang Jia-zhu Wen Li-Kang Luo Jia-Cheng Guan Department of Ultrasound The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Radiology Shulan(Quzhou)HospitalQuzhou 324000Zhejiang ProvinceChina Department of Radiology The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Pathology The Second people’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina

BACKGROUND Primary squamous cell carcinoma(SCC)of the renal parenchyma is extremely rare,with only nine cases *** SUMMARY This study reports a 51-year-old man with primary SCC of the renal *** patient was admitted with recurrent dull pain and discomfort in the right lumbar region,which had worsened over 2 weeks,accompanied by painful gross *** antigen(SCCA)levels were elevated,and imaging revealed a renal mass with associated *** patient underwent laparoscopic unilateral nephrectomy and lymph node *** pathology confirmed highly differentiated SCC with necrosis in the right renal parenchyma,with negative renal pelvis and *** pathological stage was *** months after surgery,the tumor recurred with involvement of the liver,right psoas major muscle,and inferior vena *** patient refused chemotherapy and succumbed to the disease 6 months postoperatively due to disease *** We report a case of primary SCC of the renal parenchyma,a rare renal *** clinical symptoms,laboratory tests,and imaging findings are nonspecific,making accurate and timely diagnosis *** to the literature,for patients with renal calculi accompanied by a renal mass,elevated serum SCCA levels,and magnetic resonance imaging showing cystic or cystic-solid masses within the kidney with pseudocapsules and heterogeneous mild enhancement,the possibility of this disease should be considered.

关键词： Renal tumor Renal parenchyma Squamous cell carcinoma Renal calculi Computed tomography 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

智能传感技术在水肥一体系统中的应用研究

农机化研究 2025年第2期47卷 176-180页

作者：祝鹏郭艳光内蒙古农业大学职业技术学院内蒙古包头014109

以进一步提升水肥一体机系统的作业效率为目标,选取智能传感的监测技术,针对整机的监测控制与信号处理展开应用设计研究。考虑水肥一体机过程作业肥液融合的均匀性及系统各模块之间的协同性功能实现,结合微分补偿的传感数据算法处理方法... 详细信息

以进一步提升水肥一体机系统的作业效率为目标,选取智能传感的监测技术,针对整机的监测控制与信号处理展开应用设计研究。考虑水肥一体机过程作业肥液融合的均匀性及系统各模块之间的协同性功能实现,结合微分补偿的传感数据算法处理方法,进行智能传感的水肥一体机架构布局,并匹配可执行的软件控制程序及硬件实施结构,进行实地传感应用监测与灌施控制作业试验。结果表明:水肥一体机系统的数据监测准确率可达95.25%,系统故障率相对降低3.79%,监测数据准确及时,能够确保系统各环节指令得到有效的调整与反馈,进而保证灌施土壤的含水稳定率相对提升7.87%,对于作物的稳定生长与产量提升有重要的参考价值。

关键词：水肥一体机智能传感信号处理微分补偿数据监测准确率

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

带式输送机智能化发展现状研究

煤矿机械 2025年第1期46卷 73-76页

作者：秦翥中煤科工集团上海有限公司上海200030

带式输送机作为煤矿运输的关键装备,通过与智能化技术深度融合,成为智慧矿山建设的重要组成部分。从安全生产、可靠运行、高效运输、无人化作业4个智能化应用场景目标出发,列举了视觉分析、全生命周期监测、智控调速、巡检集控平台等带... 详细信息

带式输送机作为煤矿运输的关键装备,通过与智能化技术深度融合,成为智慧矿山建设的重要组成部分。从安全生产、可靠运行、高效运输、无人化作业4个智能化应用场景目标出发,列举了视觉分析、全生命周期监测、智控调速、巡检集控平台等带式输送机智能化关键技术应用现状,结合现场反馈,明确在安全预警、专家库模型、输送带精准调控、无人巡检作业等方面尚存在问题。结合技术发展趋势,给出了以大数据技术与带式输送机远程运维控制中心为基础、以透明化感知应用与全矿井智能运输体系为依托、通过工业级信息交互与数据挖掘手段、实现带式输送机安全可靠高效无人化的目标,为推动智能矿山新质生产力提供支撑。

关键词：带式输送机智能装备安全生产远程运维无人化

绿色金融支持生态旅游资源价值实现的因素及模式分析

在线全文

学校读者我要写书评

暂无评论

生态经济 2025年第1期41卷 168-175页

作者：尹国俊朱佳娴浙江农林大学经济管理学院浙江杭州311300

中国生态旅游资源丰富,但绿色金融工具支持生态旅游资源价值实现的有效模式尚不明晰。运用fsQCA方法,以42个浙江省县域样本为典型案例,从组态视角分析了绿色金融支持生态旅游资源价值实现的路径和有效模式,最终得出六条有效路径,根据主... 详细信息

中国生态旅游资源丰富,但绿色金融工具支持生态旅游资源价值实现的有效模式尚不明晰。运用fsQCA方法,以42个浙江省县域样本为典型案例,从组态视角分析了绿色金融支持生态旅游资源价值实现的路径和有效模式,最终得出六条有效路径,根据主导要素的不同,绿色金融支持生态旅游资源价值实现可以分为投资主导、融资主导、多方融合三种模式。结果发现:多个绿色金融工具互相补充、共同作用,其中节能环保发展水平在多数路径当中居于核心位置,各影响因素的作用因路径不同而存在差异。各地需要因地制宜根据影响因素分布状态采取恰当的支持模式。

关键词：绿色金融生态旅游生态资源价值模式

“One stone, two birds”: Salt template enabling porosity engineering and single metal atom coordinating toward high-performance zinc-ion capacitors

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期 637-645页

作者： Chunliu zhu Huanyu Liang Ping Li Chenglong Qiu Jingyi Wu Jingwei Chen Weiqian Tian Yue zhu Zhi Li Huanlei Wang School of Materials Science and Engineering Ocean University of China Department of Chemical and Materials Engineering University of Alberta

Zinc-ion hybrid capacitors （ZIHCs） have received increasing attention as energy storage devices owing to their low cost,high safety,and environmental ***,their progress has been hampered by low energy and power density,as well as unsatisfactory long-cycle stability,mainly due to the lack of suitable electrode *** this context,we have developed manganese single atoms implanted in nitrogen-doped porous carbon nanosheets （MnSAs/NCNs） using a metal salt template method as cathodes for *** metal salt serves a dual purpose in the synthesis process:It facilitates the uniform dispersion of Mn atoms within the carbon matrix and acts as an activating agent to create the porous *** applied in ZIHCs,the MnSAs/NCNs electrode demonstrates exceptional performance,including a high capacity of 203 m Ah g-1,an energy density of 138 Wh kg-1at 68 W kg-1,and excellent cycle stability with 91%retention over 10,000 *** calculations indicate that the introduced Mn atoms modulate the local charge distribution of carbon materials,thereby improving the electrochemical *** work demonstrates the significant potential of carbon materials with metal atoms in zinc-ion hybrid capacitors,not only in enhancing electrochemical performance but also in providing new insights and methods for developing high-performance energy storage devices.

关键词：

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

嘉绒藏绣纹样在女士化妆包设计中的应用研究

皮革科学与工程 2025年第1期35卷 107-113页

作者：朱文霜邓梦玮桂林理工大学艺术学院广西桂林541004

嘉绒藏族织绣工艺蕴含着丰富的文化内涵和艺术魅力,嘉绒藏绣非遗文化的创造性转化和发展能更好的保留传统文化记忆。通过文献调研法和案例分析法阐述嘉绒藏绣的纹样技法、风格特点及其当代应用,用设计学方法对嘉绒藏绣代表性纹样进行提... 详细信息

嘉绒藏族织绣工艺蕴含着丰富的文化内涵和艺术魅力,嘉绒藏绣非遗文化的创造性转化和发展能更好的保留传统文化记忆。通过文献调研法和案例分析法阐述嘉绒藏绣的纹样技法、风格特点及其当代应用,用设计学方法对嘉绒藏绣代表性纹样进行提取、分解、重构和再设计,并结合其典型的色彩和布局,融入当下文创市场流行的中青年女士化妆包中,验证嘉绒藏绣传统技艺活态化传承的可行性,拓展女士化妆包的设计创新路径。

关键词：刺绣纹样化妆包非遗文化设计嘉绒藏族

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan Yu Xiao-Li Li Xiao-Ting Sun Li-Ting Wang Xia Wu Ling-Jie zhu Xiao-Jia Yang Qian-Ru He Fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

Effect of Optimum Plastic Depth on Stresses and Load-bearing Capacity of Autofrettaged Cylinder

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2013年第2期26卷 365-370页

作者： zhu Ruilin zhu Guolin Polytechnic College Hunan Normal University Basic Courses Department Jiangxi Police College

Autofrettage is an effective measure to even distribution of stresses and raise load-bearing capacity for （ultra-）high pressure apparatus. Currently, the research on autofrettage has focused mostly on specific engineering problems, while general theoretical study is rarely done. To discover the general law contained in autofrettage theory, by the aid of the authors’ previous work and according to the third strength theory, theoretical problems about autofrettage are studied including residual stresses and their equivalent stress, total stresses and their equivalent stress, etc. Because of the equation of optimum depth of plastic zone which is presented in the authors’ previous work, the equations for the residual stresses and their equivalent stress as well as the total stress and their equivalent stress are simplified greatly. Thus the law of distribution of the residual stresses and their equivalent stress as well as the total stress and their equivalent stress and the varying tendency of these stresses are discovered. The relation among various parameters are revealed. The safe and optimum load-bearing conditions for cylinders are obtained. According to the results obtained by theoretical analysis, it is shown that if the two parameters, namely ratio of outside to inside radius, k, and depth of plastic zone, kj, meet the equation of optimum depth of plastic zone, when the pressure contained in an autofrettaged cylinder is lower than two times the initial yield pressure of the unautofrettaged cylinder, the equivalent residual stress and the equivalent total stress at the inside surface as well as the elastic-plastic juncture of a cylinder are lower than yield strength. When an autofrettaged cylinder is subjected to just two times the initial yield pressure of the unautofrettaged cylinder, the equivalent total stress within the whole plastic zone is just identically equal to the yield strength, or it is a constant. The proposed research theoretically depicts the st

关键词： thick-wall cylinder autofrettage residual stress load-bearing capacity