学术论文引文网络的无标度特征及成因分析   总被引：1，自引：1，他引：0  

黄颖  王勉 《中国科技期刊研究》2010,21(6):851-854

随着科学研究的不断深入,学术论文数量日增,彼此之间的相互引用关系形成了一个复杂网络.在前人研究的基础上,经过实证分析,发现我国学术论文的引文网络符合无标度网络的特征.引文网络无标度特征形成的主要原因,源于作者引用心理上的选择与判断,主要的判断标准为期刊的品牌影响力、对原创文献的优先链接、文献的学术水平等等.对引文网络的分析有利于从根本上提高学术质量,增加原创文献数量,减少因非学术目的等原因所造成的低水平论文数量,提高科学研究的水平,同时,也为期刊实施科学的管理和评价提供了借鉴和新思路.  相似文献   

当代大学生的个性分析     

鄂倩  李绵 《丹东师专学报》2000,22(3):46-48

当前高校学生心理障碍已经成为影响其正常发展的一种因素,高校应该建立健全心理咨询机构,为大学生成才提供必要的心理健康支柱。  相似文献   

从《朱熹集》看朱子对孔子的继承与发展     

何绵山 《闽江学院学报》2000,(5)

:朱子思想与孔子思想有直接的渊源关系。《朱熹集》中朱子对孔子进行了多方面论述 ,如论述了孔子思想体系中的“仁”、“克己复礼”、“忠、孝、信、义”等有关内容 ,诠析了孔子与《诗》、《书》、《礼》、《乐》、《易》、《春秋》的密切关系 ,强调了孔子学说中严格等级制度的正名主义 ,进一步宣传了“三纲”思想  相似文献   

Quantum mechanics experiment mimicked by stochastic calculations     

Raul Rabinovici  Ahmad Alyan  Ronen Rabinovici 《Journal of The Franklin Institute》2012,349(6):2163-2170

The paper presents a stochastic calculations algorithm that mimics the photon polarization experiments of quantum mechanics. This experiment is usually used to introduce the quantum computing approach. Stochastic filters that operate on stochastic numbers in a mode similar to that of polarized filter operation on random polarized photons are introduced.  相似文献   

Effective Integration of ICT in Jordanian Schools: An Analysis of Pedagogical and Contextual Impediments in the Science Classroom     

Ahmad Mohammad Qablan  Amjad Abuloum  Jamal Abu Al-Ruz 《Journal of Science Education and Technology》2009,18(3):291-300

A series of interviews and classroom observations were conducted with a group of in-service science teachers, students, school principal, and computer lab supervisors, from a “Discovery” female school in Jordan to assess their utilization of information and communication technology (ICT) in teaching science. The study also intended to determine how these participants were using ICT and if they had any internal and external impediments in the way of the effective integration of ICT in the teaching of science. Results showed that some participants were using ICT creatively in their science teaching. However, despite considerable political pressure to increase ICT use in the classroom, most expressed frustration at the lack of ICT tools, support from the school, from the Ministry of Education, and from the surrounding community. The article proposes possible resolutions to help these participants overcome their impediments. Some of the suggested resolutions for the internal impediments include involving teachers in preparing the school’s time-table, equipping the school with more ICT tools and offering more training courses for teachers. However, the suggested resolutions for the external impediments involve (1) The Ministry of Education to rethink the administration of board examinations, (2) The school to sacrifice scoring higher in board examinations for preparing more creative and more versatile students’ perspectives.  相似文献   

Karaeng Pattingalloang's heaven and earth     

Nirwan Ahmad Arsuka 《Inter-Asia Cultural Studies》2013,14(2):309-319

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A novel controller for nonlinear uncertain systems using a combination of SDRE and function approximation technique: Regulation and tracking of flexible-joint manipulators     

Neda Nasiri  Ahmad Fakharian  Mohammad Bagher Menhaj 《Journal of The Franklin Institute》2021,358(10):5185-5212

This paper presents a novel combined State Dependent Riccati Equation (SDRE) / Function Approximation Technique (FAT)-based control design for nonlinear uncertain systems. The SDRE is employed to construct an optimal controller and the function approximation technique is utilized to estimate time-varying disturbances and uncertainties. Moreover, a robust term in the proposed control law compensates for the truncation error. The closed-loop stability and boundedness of the tracking error and FAT weights approximation error are proved in the sense of Lyapunov, with consideration of truncation error. Due to the great importance of the adequate performance of transient response from practical point of view, performance evaluation has been accomplished. The proposed scheme is computationally simple due to utilizing the FAT to represent uncertainties and disturbances as a function of time. Compared with the SDRE based SMC, the proposed controller is superior in terms of capability to track a fast and highly complicated trajectory and no need to determine time-varying disturbances and uncertainties bounds. The case study is a Selective Compliant Articulated Robot for Assembly (SCARA) flexible joint manipulator as a representative of highly nonlinear, coupled, large robotic systems. Simulation results easily verify the effectiveness and superiority of the proposed controller.  相似文献   

奥运村建设思想历程研究     

高侠  王冕 《沈阳体育学院学报》2011,30(1):34-38

从城市社会学的角度对奥运村建设理念进行了梳理,奥运村由概念到实体的产生历经了一个历史过程,呈现出非线性的特点。历届奥运村的概念和指导思想各异,在其发展的某个阶段领袖人物或者大众的愿望会发生作用,其背后是深层次的社会价值和社会行动。奥运村既关注有形的物理空间的建设,亦关注无形的社会文化空间的塑造,成熟的奥运村是二者的有机结合。被誉为奥林匹克运动心脏的奥运村是奥林匹克运动最有活力的场所,由此使得带有某种形式的纪念寓意的奥运村有别于城市的其他区域。  相似文献   

The face of digital literacy for Muslim teenage girls: a comparative study of Bradford Muslim girl schools     

Javed Iqbal  Aishah Ahmad Sabki  Ibrahim Elbeltagi 《International Journal of Inclusive Education》2013,17(12):1283-1303

This paper is grounded in a qualitative approach, to call forth the views of Muslim teenage girls on their access and use of learning technologies for inclusive educational practice. The 45 Muslim teenage girls, aged 14–19 years old, from three British Muslim girls schools participated in this empirical study. Semi-structured interviews were used for data collection and the data were analysed using template analysis, matrix analysis, and cross-case analysis. The pupils had strong aspirations that learning technologies and computers should support their learning and attainment, but their access and use to supporting technologies was mixed. It was found through a comparative analysis of the data that all the Muslim teenage girls that entered Muslim schools felt secure and performed competently. Furthermore, the educational success of School A was attributable to educational norms and values relative to the provision of digital resources and skilled teaching staff. The educational experiences of School B and School C were more variable due to access to digital technologies, provision of digital contents and skilled teaching staff. Furthermore, this research study seems to highlight a marked difference between the Muslim School environment and the social context of teenage girls outside the educational setting.  相似文献   

Use of social networks and information seeking behavior of students during political crises in Pakistan: A case study     

Maqsood Ahmad Shaheen 《International Information and Library Review》2013,45(3):142-147

This study was undertaken to investigate the use of social networks and political activism on the Internet by the students of three universities of Islamabad and Rawalpindi during the political crises for the last one year and the emergency imposed by the Government of Pakistan on November 3, 2007. The findings conclude that Internet use by the students promoted democracy, freedom of expression and greater awareness about their rights during the political crises in Pakistan.

The survey method of research was used to collect data. The sample consisted of 420 students studying at the Quaid-e-Azam University Islamabad, Fatima Jinnah Women University, Rawalpindi, and International Islamic University Islamabad, Pakistan. The questionnaire was sent to the students by email. The survey was administered through SurveyMonkey website. The response rate was 72.23%.

The paper is a useful source of information about how the social networking tools have been influencing and changing communication channels in Pakistan.  相似文献