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学科间知识扩散研究 ——以图书馆学和计算机科学为例（2005-2017）

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学科间知识扩散研究 ——以图书馆学和...

作者： swe zin Phyo 华中师范大学

学位级别：硕士

信息和通信技术（ICT）的增长及其在科学协会中相互联系的影响刺激了知识的扩散,这些知识的扩散对科学专业以及研究与开发（R＆D）的发展非常有用。另外,必须了解有助于科学学科之间知识的连接和扩散的因素。因此,知识扩散过程需要更多... 详细信息

信息和通信技术（ICT）的增长及其在科学协会中相互联系的影响刺激了知识的扩散,这些知识的扩散对科学专业以及研究与开发（R＆D）的发展非常有用。另外,必须了解有助于科学学科之间知识的连接和扩散的因素。因此,知识扩散过程需要更多的意见,主要是从对空间作为科学学科之间的距离的简单解释开始。问题是:据我们所知,还没有文献表明进行了一项研究来衡量图书馆和计算机科学学科之间的知识扩散。这项研究的目的是调查两个密切相关的科学学科之间的知识扩散,并且通过根据应用知识趋势对不同科学学科的连通性进行实证测量,从而为讨论做出贡献。本研究采用定量研究方法。通过Webof Science（WOS）数据库收集本文所需的数据,其中包含共13年的2162份期刊的引文数据集。本文从这些期刊中选择了68份高被引的期刊,用来证明两个学科之间相互引用的程度。这项研究描述了基于引文分析的网络测量。选择Citespace和VOS Viewer作为检索数据后分析数据的工具。然后,为了描述图书馆与计算机科学之间的知识扩散,中心网络分析和聚类分析将被用作网络度量。这两种方法建议根据两种科学之间的期刊引用（引用和被引）来衡量知识扩散的范围。但是,结果证明,科学知识的扩散受到图书馆科学网络的影响要超过计算机科学网络的影响。这一发现可以归因于科学学科的快速发展,这使得在国际范围内共享信息变得更加容易。

关键词：知识传播影响评估网络分析引文分析

Investigation of Error Detection Capabilities of Various Patient-Specific Intensity Modulated Radiotherapy Quality Assurance Devices

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2019年第1期8卷 21-31页

作者： Taweap Sanghangthum swe zin Lat Sivalee Suriyapee Division of Radiation Oncology Department of Radiology Faculty of Medicine Chulalongkorn University Bangkok Thailand Department of Radiation Oncology Pilon Hospital Yangon Myanmar

The capability of error detection of patient-specific QA tools plays an important role in verifying MLC motion accuracy. The goal of this study was to investigate the capability in error detection of portal dosimetry, MapCHECK2 and MatriXX QA tools in IMRT plans. The 9 fields IMRT for 4 head and neck plans and 7 fields IMRT for 4 prostate plans were selected for the error detection of QA devices. The measurements were undertaken for the original plan and the modified plans, where the known errors were introduced for increasing and decreasing of prescribed dose (±2%, ±4% and ±6%) and position shifted in X-axis and Y-axis (±1, ±2, ±3 and ±5 mm). After measurement, the results were compared between calculated and measured values using gamma analysis at 3%/3 mm criteria. The average gamma pass for no errors introduced in head and neck plans was 96.9%, 98.6%, and 98.8%, while prostate plans presented 99.4%, 99.0%, and 99.7%, for portal dosimetry, MapCHECK2 and MatriXX system, respectively. In head and neck plan, the shifted error detections were 1 mm for portal dosimetry, 2 mm for MapCHECK2, and 3 mm for MatriXX system. In prostate plan, the shifted error detections were 2 mm for portal dosimetry, 3 mm for MapCHECK2, and 5 mm for MatriXX system. For the dose error detection, the portal dosimetry system could detect at 2% dose deviation in head and neck and 4% in prostate plans, while other two devices could detect at 4% dose deviation in both head and neck and prostate plans. Portal dosimetry shows slightly more capability to detect the error compared with MapCHECK2 and MatriXX system, especially in the complicated plan. It may be due to higher resolution of the detector;however, all three-detector types can detect various errors and can be used for patient-specific IMRT QA.

关键词： Error Detection Gamma Analysis IMRT Plan Intentional Errors QA Tool

Digital Pulse Width Modulation Control in Power Electronic Circuits Design

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Journal of Power and Energy Engineering 2020年第4期8卷 1-10页

作者： Hsu Myat Tin swe Hla Myo tun Maung Maung Latt Department of Electronic Engineering Yangon Technological University Yangon Myanmar Department of Electronic Engineering Technological University (Taungoo) Taungoo Myanmar

The paper mainly focuses on the digital pulse width modulation (DPWM) control techniques for high performance power electronic circuit design. The problem to be solved in this study addresses the DPWM converter design for DC to DC conversion process. The control techniques have been utilized the Fuzzy Logic Rules Base method for proposed SIMULINK model of high performance power electronic circuit. The analytical calculations for real circuit design have been completed based on the mathematical modeling of the system. The results from the developed SIMULINK model confirm the target specifications of the high performance condition for power electronic circuit which was met the objective of this study. The numerical results have been carried out with the help of MATLAB/SIMULINK.

关键词： Digital Pulse Width Modulation Power Electronics Analytical Modeling Mathematical Modeling SIMULINK Model MATLAB

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缅甸曼德勒福庆孔子课堂互动教学分析研究

缅甸曼德勒福庆孔子课堂互动教学分析研究

作者：林嘉玉（zin MAR tun）中央民族大学

学位级别：硕士

第二语言教学的最终目的是培养学生运用目的语进行交际的能力。课堂就是帮助学生学习和掌握目的语的主要场所。课堂上学生们在教师的帮助和指导下,按照一定的教学计划和步骤,有目的地学习和掌握。课堂教学该包括学生们在课堂上学习和互... 详细信息

第二语言教学的最终目的是培养学生运用目的语进行交际的能力。课堂就是帮助学生学习和掌握目的语的主要场所。课堂上学生们在教师的帮助和指导下,按照一定的教学计划和步骤,有目的地学习和掌握。课堂教学该包括学生们在课堂上学习和互动,这样的课堂才能让学生感到快乐,同时也会有收获。全文共有四个部分：第一部分介绍了福庆孔子课堂,并对本研究选题的缘由进行了说明。同时回顾了前人对第二语言课堂教学互动以及汉语课堂互动教学模式的研究。第二部分分析了缅甸福庆孔子课堂的汉语教学互动模式,分别对汉语课堂词语、课文、语法以及练习环节中的互动现状进行了描写和分析。第三部分总结了缅甸福庆孔子课堂汉语教学词语、课文、语法和练习的互动流程,并结合笔者的教学实践进行反思性分析研究。第四部分,根据分析提出了缅甸汉语教学建议,指出缅甸学生虽有一定的汉语基础,但大都不愿接受完全用汉语上课,他们普遍认为采用中缅语结合的方式进行教学不仅有利于理解和记忆,且有助于拉近师生间的关系。同时对本研究的局限进行了反思。

关键词：福庆孔子课堂缅甸学生课堂互动教学设计

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21世纪海上丝绸之路与缅甸的角色

华东师范大学学报（自然科学版） 2020年第S1期 1-5页

作者： tun Khin Kyi 向在胜中南财经政法大学法学院武汉430073

中国倡导的21世纪海上丝绸之路涉及亚洲、欧洲、非洲、中东和美洲的138个国家和30个国际组织对基础设施的开发和投资."一带一路"倡议包含着两个部分:陆上经济带与海上丝绸之路."一带一路"倡议项目侧重于基础设施、投资、教育、建筑材料... 详细信息

中国倡导的21世纪海上丝绸之路涉及亚洲、欧洲、非洲、中东和美洲的138个国家和30个国际组织对基础设施的开发和投资."一带一路"倡议包含着两个部分:陆上经济带与海上丝绸之路."一带一路"倡议项目侧重于基础设施、投资、教育、建筑材料、铁路和公路、汽车、房地产、电网以及钢铁.缅甸作为股东参与着孟-中-印-缅经济走廊和"一带一路"倡议的中缅经济走廊.孟-中-印-缅经济走廊希望创建"自由贸易区".大多数情况下,缅甸等发展中国家希望从"一带一路"获得投资、基础设施与发展.虽然缅甸可以从项目中受益,但缅甸更关心该项目如何保护环境以及对东道国的环境有多大程度影响.本项研究的目的是为了阐述缅甸在"一带一路"倡议中的作用以及该项目建立后对缅甸的环境、文化交流会产生怎样的影响或益处.由于缅甸拥有自然资源,因此投资者对缅甸感兴趣.目前,缅甸正积极参与该项目.

关键词：孟-中-印-缅经济走廊中缅经济走廊文化交流

Computerized FDTD Method for Longitudinal Optical Phonon Energy on Semiconductor Hybrid Structure for High Power Devices Fabrication

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Journal of Computer Science Research 2021年第2期3卷 39-51页

作者： Phyo Sandar Win Hsu Myat Tin swe Hla Myo tun Department of Electronic Engineering Technological University(Taungoo)BagoMyanmar Faculty of Electrical and Computer Engineering Yangon Technological UniversityYangonMyanmar

The research problem in this study is the longitudinal optical phonon energy on metal/semiconductor interface for high performance semiconductor *** research solution is to make the software model with finite difference time domain(FDTD)solution for transmission and reflection pulse between metal and semiconductor interface for carrier dynamics *** objective of this study is to find the quantum mechanics understanding on interface engineering for fabricating the high performance device for future semiconductor technology *** analysis was carried out with the help of *** quantum mechanical spatial field on metal-semiconductor stripe structure has been analyzed by FDTD *** emission reveals a characteristic polar radiation distribution of electric dipoles and a wavelength independent of the structure size or the direction of emission;consequently,it is attributed to thermally generate electric dipoles resonating with the longitudinal optical phonon *** energy occurs lattice vibration of material by the polarization of light,if the material has rigid structure reflect back the incident ***,high reflective metal-semiconductor structure always use as photodectors devices in optical fiber *** lattice vibration material structure has no phonon effect,so this structure based devices can get high performance any other structure based *** transmission and reflection coefficient of metal-semiconductor GaN/Au layer structure compare with GaN/Ti and GaN/Pt ***(P)and transverse(S)polarization of light incident on a metal-semiconductor nanolayer structure with IR *** use of the layer by layer(LbL)method to fabricate nanofilms requires meeting certain conditions and limitations that were revealed in the course of research on model systems.

关键词： FDTD Semiconductor structure Computer simulation Computer programming MATLAB