检索结果-南通市图书馆

新文科建设背景下中国教育人类学学科建设研究

在线全文

学校读者我要写书评

暂无评论

西北民族研究 2024年第1期 75-88页

作者：巴战龙北京师范大学社会学院北京100875

中国教育人类学在百余年发展历程中取得长足进步和显著成就,但也面临如何提高研究质量和提升创新能力的尖锐挑战。当前中国教育人类学的繁荣发展,需要紧紧抓住新文科建设提供的难得契机,在厘清和重构学科定位和愿景的基础上,构建以学会... 详细信息

中国教育人类学在百余年发展历程中取得长足进步和显著成就,但也面临如何提高研究质量和提升创新能力的尖锐挑战。当前中国教育人类学的繁荣发展,需要紧紧抓住新文科建设提供的难得契机,在厘清和重构学科定位和愿景的基础上,构建以学会组织为核心的学科创新生态系统。为实现“世界水平、中国特色”的学科建设目标和任务,中国教育人类学界需要齐心协力,从开发和健全学会组织功能、激励和加强高等学校教学、构建和密织学术合作网络、加强和提升学术创新能力、普及和传播学科视角方法等五个方面着手构建学科创新生态系统。通过不懈努力将教育人类学打造成文科教育中国范式的典型案例和示范学科,真正开创出国际学界公认和国内学界自豪的“教育人类学的中国时代”。

关键词：创新生态系统新文科建设学科建设教育人类学

Weibull analysis of fluidity and hardness of ultrasonical y degassed secondary Al7Si0.3Mg aluminum alloy

在线全文

学校读者我要写书评

暂无评论

China Foundry 2019年第5期16卷 352-357页

作者： ?a?lar yüksel Atatürk University Department of Metallurgical and Materials Engineering

The influence of ultrasonic degassing process on fluidity and hardness of secondary Al7Si0.3Mg alloy castings was studied by Weibull analysis. This work makes a contribution about fluidity and hardness distribution of secondary aluminum alloys with ultrasonic degassing phenomena using a two-parameter form of Weibull analysis. Results show that both hardness and fluidity of alloy are improved after the ultrasonic degassing process. Average efficiency of ultrasonic degassing on fluidity measurements is 31.71%, whereas on hardness values is 8.48%. The Brinell hardness of 45.7 and fluidity of 19.5 of Weibull modulus were achieved as the most reliable and reproducible after 45 s ultrasonic degassing process against 15 s and 30 s ultrasonic degassing processes. The value of 70.08 HB is obtained from ultrosonic degassing, which is equivalent to sand casting of primary Al7Si0.3Mg aluminum alloy, and the highest value of 56.4 cm for 45 s after ultrasonic degassing of fluidity was measured.

关键词： Weibull analysis Weibull modulus ultrasonic degassing fluidity hardness aluminum

根茎克隆植物芦苇应对风沙活动过程的生长和生殖的权衡关系

在线全文

学校读者我要写书评

暂无评论

Journal of Plant Ecology 2024年第1期17卷 68-77页

作者： Chaoqun ba Shanshan Zhai Jianqiang Qian Bo Liu Jinlei Zhu Zhimin Liu Institute of Applied Ecology Chinese Academy of SciencesShenyang 110016China University of Chinese Academy of Sciences Beijing 100049China College of Forestry Henan Agricultural UniversityZhengzhou 450002China College of Life Science Qufu Normal UniversityQufu 273165China Institute of Ecological Conservation and Restoration Chinese Academy of ForestryBeijing 100093China

生长和繁殖之间的权衡是克隆植物适应性策略的重要组成部分。根茎型沙生植物通过权衡策略应对风沙过程(埋沙和风蚀)对它们在流动沙丘上的定居尤为重要。尽管根茎型物种对风沙过程的响应已经有了部分研究,但这些克隆物种如何通过生长和... 详细信息

生长和繁殖之间的权衡是克隆植物适应性策略的重要组成部分。根茎型沙生植物通过权衡策略应对风沙过程(埋沙和风蚀)对它们在流动沙丘上的定居尤为重要。尽管根茎型物种对风沙过程的响应已经有了部分研究,但这些克隆物种如何通过生长和繁殖中的潜在权衡关系来应对风沙过程仍不清楚。在本研究中,我们采用了野外调查和生物量建模的手段,评估了芦苇(Phragmites communis)在沙埋和风蚀条件下,营养生长和生殖生长以及分株数量和大小之间的权衡关系。研究结果表明,沙埋促进了种子生物量和生殖努力(RE)的增加;风蚀减少了RE,但对种子生物量没有显著影响。沙埋增加了分株的生物量,而风蚀增加了分株种群密度并加速了分株的成熟。这些研究表明,根茎型沙地植物通过调整其生长策略来应对风沙过程,即在沙埋条件下,增加生殖生长和分株大小,而在风蚀条件下,增加营养生长和分株数量。

关键词：适应策略沙埋风蚀芦苇(Phragmites communis) 有性生长无性生长根茎

Synthesis and characterization of salt-impregnated anodic aluminum oxide composites for low-grade heat storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2020年第1期27卷 112-118页

作者： Bengisu yilmaz Behiye yüksel gökhan Orhan Devrim Aydin Zafer Utlu stanbul University-Cerrahpasa Faculty of EngineeringDepartment of Metallurgy and Materials EngineeringIstanbul 34320Turkey Istanbul gedik University Department of Mechanical EngineeringIstanbul 34876Turkey Eastern Mediterranean University Faculty of EngineeringDepartment of Mechanical EngineeringMersin 10Turkey

Thermochemical heat storage(THS)systems have recently attracted a lot of attention in research and *** this study,an anodic aluminum oxide(AAO)template,fabricated by a two-step anodization method,was used for the first time as the matrix material for a THS *** salts were studied as thermochemical materials for their suitability in low-grade heat storage application driven by solar energy for an open *** were prepared by absorbing CaCl2,MgCl2,LiCl,LiNO3 and mixtures of these salts under a vacuum in an AAO *** Emission Scanning Electron Microscopy was used to examine the morphology of the produced AAO *** energy storage capacities of the composites were characterized using a differential scanning *** analysis showed that anodized Al plates were suitable matrix materials for THS systems,and composite sorbent prepared with a 1:1 ratio LiCl/LiNO3 salt mixture had the highest energy value among all composites,with an energy density of 468.1 k J·kg-1.

关键词： thermal energy storage salt impregnation thermochemical heat storage anodizing salt in matrix

现代性与多样性的关系--教育人类学的根本研究论题刍议

在线全文

学校读者我要写书评

暂无评论

西南民族大学学报（人文社会科学版） 2024年第5期45卷 16-26页

作者：巴战龙北京师范大学社会学院北京100875

作为学科界说的新范式,“新教育人类学”建立在两个基本假设--教育人类学既是一门社会科学,又是教育诸学科中最为基础的学科--之上,主张教育人类学的根本研究论题是现代性与多样性的关系问题。尽管学界关于“何谓现代性”至今仍是聚讼... 详细信息

作为学科界说的新范式,“新教育人类学”建立在两个基本假设--教育人类学既是一门社会科学,又是教育诸学科中最为基础的学科--之上,主张教育人类学的根本研究论题是现代性与多样性的关系问题。尽管学界关于“何谓现代性”至今仍是聚讼纷纷、莫衷一是,但在反思性继承社会科学已有经验和成果的基础上,教育人类学至少可以从同一性与多样性和不平等与多样性两个主题出发对现代性与多样性的关系问题展开探索和论述,进而转换研究视角和理论观念,努力做出新时代“标志性研究成果”。

关键词：现代性多样性理论构建新教育人类学

Spatial Morphology Evolution Characteristics Analysis of the Resident Population Distribution in Henan, China

在线全文

学校读者我要写书评

暂无评论

Journal of geoscience and Environment Protection 2024年第3期12卷 163-180页

作者： Kaiguang Zhang Hongling Meng Mingting ba Danhuan Wen School of geography and Tourism Zhengzhou Normal University Zhengzhou China

The population spatial distribution pattern and its evolving pattern play an important role in regional allocation of social resources and production factors, formulation of regional development plans, construction of a better life society, and promotion of regional economic development. based on the resident population statistics data of Henan province from 2006 to 2021, with county as the basic study unit, the paper studies the spatial morphology characteristics and its evolution patterns of resident population distribution, by using spatial analysis methods such as population distribution center, standard deviation ellipse, and spatial auto correlation analysis. The results show that: the resident population spatial distribution shows unbalanced state, the population agglomeration areas mainly distribute in the northeast part and north part, where the resident population growth rate is significantly higher than other regions, over time, this trend is gradually becoming significant. The resident population distribution has a trend of centripetal concentration, with the degree and trend of centripetal gradually strengthening. The resident population distribution has obvious directional characteristics, but the significance is not high, the weighted resident population average center is approximately located at (4.13740˚N, 113.8935˚E), and the azimuth of the distribution axis is approximately 11.19˚. The population distribution has obvious agglomeration characteristics, with the built-up areas of Zhengzhou and Luoyang as their centers, where have a significant siphon effect on the surrounding population. The southern and southwestern regions in the province form a relatively stable belt area of Low-Low agglomeration areas.

关键词： Resident Population Spatial Distribution Spatial Morphology Temporal and Spatial Evolution Center Migration Standard Deviation Ellipse Spatial Autocorrelation

Levels of evidence and grades of recommendation supporting European society for medical oncology clinical practice guidelines

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Oncology Research 2024年第5期32卷 807-815页

作者： MARKO SKELIN BRUNA PERKOV-STIPIČIN SANJA VUŠKOVIĆ MARINAŠANDRK PLEHAČEK ANE baŠIĆ DAVIDŠARČEVIĆ MAJA ILIĆ IVAN KREČAK Pharmacy Department General Hospital ofŠibenik-Knin CountyŠibenikCroatia Faculty of Medicine University of RijekaRijekaCroatia Undergraduate Study in Nursing University of Applied SciencesŠibenikCroatia Department of Oncology University Hospital Center ZagrebZagrebCroatia Pharmacies Joukhadar Sveta NedeljaCroatia Pharmacies Prima Pharme ZagrebCroatia Pharmacy Department General Hospital ZadarZadarCroatia Pharmacy Department General Hospital PulaPulaCroatia Department of Internal Medicine General Hospital ofŠibenik-Knin CountyŠibenikCroatia

background:The European Society for Medical Oncology(ESMO)guidelines are among the most comprehensive and widely used clinical practice guidelines(CPgs)***,the level of scientific evidence supporting ESMO CPg recommendations has not been systematically *** study assessed ESMO CPg levels of evidence(LOE)and grades of recommendations(gOR),as well as their trends over time across various cancer ***:We manually extracted every recommendation with the Infectious Diseases Society of America(IDSA)classification from each *** examined the distribution of LOE and gOR in all available ESMO CPg guidelines across different topics and cancer ***:Among the 1,823 recommendations in the current CPg,30%were classified as LOEⅠ,and 43%were classified as gOR ***,there was a slight decrease in LOEⅠ(−2%)and an increase in the proportion of gOR A(+1%)in the current CPg compared to previous *** proportion of gOR A recommendations based on higher levels of evidence such as randomized trials(LOEⅠ–Ⅱ)shows a decrease(71%vs.63%,p=0.009)while recommendations based on lower levels of evidence(LOEⅢ–Ⅴ)show an increase(29%vs.37%,p=0.01)between previous and current *** the current versions,the highest proportion of LOEⅠ(42%)was found in recommendations related to pharmacotherapy,while the highest proportion of gOR A recommendations was found in the areas of pathology(50%)and diagnostic(50%)*** variability in LOEⅠand gOR A recommendations and their changes over time was observed across different cancer ***:One-third of the current ESMO CPg recommendations are supported by the highest level of *** well-designed randomized clinical trials are needed to increase the proportion of LOEⅠand gOR A recommendations,ultimately leading to improved outcomes for cancer patients.

关键词： ESMO guidelines Clinical practice guidelines Level of evidence grade of recommendation

Knowledge-Driven Possibilistic Clustering with Automatic Cluster Elimination

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials and Continua 2024年第3期80卷 4917-4945页

作者： Hu X. Tang y. Pedrycz W. Jiang J. Jiang y. The School of Computer Science and Engineering Southeast University Nanjing 211189 China The School of Computer and Information Hefei University of Technology Hefei 230601 China The Department of Electrical and Computer Engineering University of Alberta Edmonton T6R 2V4 AB Canada The Systems Research Institute Polish Academy of Sciences Warsaw 00-901 Poland The School of Information Engineering Nanjing University of Finance and Economics Nanjing 210023 China

Traditional Fuzzy C-Means (FCM) and Possibilistic C-Means (PCM) clustering algorithms are data-driven, and their objective function minimization process is based on the available numeric data. Recently, knowledge hints have been introduced to form knowledge-driven clustering algorithms, which reveal a data structure that considers not only the relationships between data but also the compatibility with knowledge hints. However, these algorithms cannot produce the optimal number of clusters by the clustering algorithm itself; they require the assistance of evaluation indices. Moreover, knowledge hints are usually used as part of the data structure (directly replacing some clustering centers), which severely limits the flexibility of the algorithm and can lead to knowledge misguidance. To solve this problem, this study designs a new knowledge-driven clustering algorithm called the PCM clustering with High-density Points (HP-PCM), in which domain knowledge is represented in the form of so-called high-density points. First, a new data density calculation function is proposed. The Density Knowledge Points Extraction (DKPE) method is established to filter out high-density points from the dataset to form knowledge hints. Then, these hints are incorporated into the PCM objective function so that the clustering algorithm is guided by high-density points to discover the natural data structure. Finally, the initial number of clusters is set to be greater than the true one based on the number of knowledge hints. Then, the HP-PCM algorithm automatically determines the final number of clusters during the clustering process by considering the cluster elimination mechanism. Through experimental studies, including some comparative analyses, the results highlight the effectiveness of the proposed algorithm, such as the increased success rate in clustering, the ability to determine the optimal cluster number, and the faster convergence speed. Copyright © 2024 The Authors. Published by

关键词： Fuzzy C-Means (FCM) fuzzy logic knowledge-driven machine learning optimal number of clusters possibilistic clustering

Hierarchical Control Strategy for Load Regulation based on Stackelberg game Theory Considering Randomness

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2024年第3期10卷 929-941页

作者： Tingyu Jiang Ping Ju C.y.Chung yuzhong gong College of Energy and Electrical Engineering Hohai UniversityNanjing 211100China Department of Electrical Engineering City University of Hong KongHong Kong CF624China Department of Electrical and Computer Engineering University of SaskatchewanSaskatoonSK S7N 5A9Canada CSEE IEEE

Demand response has been recognized as a valuable functionality of power systems for mitigating power *** paper proposes a hierarchical control strategy among the distribution system operator(DSO),load aggregators(LAs),and thermostatically controlled loads(TCLs);the strategy includes a scheduling layer and an executive layer to provide load *** the scheduling layer,the DSO(leader)offers compensation price(CP)strategies,and the LAs(followers)respond to CP strategies with available regulation power(ARP)*** of the DSO and LAs are modeled according to their behaviors during the load regulation *** game is adopted to capture interactions among the players and leader and to obtain the optimal strategy for each participant to achieve ***,considering inevitable random factors in practice,e.g.,renewable generation and behavior of users,two different stochastic models based on sample average approximation(SAA)and parameter modification are formulated with improved scheduling *** the executive layer,distributed TCLs are triggered based on strategies determined in the scheduling layer.A self-triggering method that does not violate user privacy is presented,where TCLs receive external signals from the LA and independently determine whether to alter their operation *** simulations are performed on the modified IEEE-24 bus system to verify effectiveness of the proposed strategy.

关键词： Demand response hierarchical control load regulation self-triggering method Stackelberg game