Instructional design,facilitation, and perceived learning outcomes: an exploratory case study of a human trafficking MOOC for attitudinal change     

Sunnie Lee Watson  Jamie Loizzo  William R. Watson  Chad Mueller  Jieun Lim  Peggy A. Ertmer 《Educational technology research and development : ETR & D》2016,64(6):1273-1300

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Promoting socially shared metacognitive regulation in collaborative project-based learning: a framework for the design of structured guidance     

Dongho Kim  Cheolil Lim 《Teaching in Higher Education》2018,23(2):194-211

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Stress analysis of anisotropic thick laminates in cylindrical bending using a semi-analytical approach   总被引：1，自引：0，他引：1  

LU Chao-feng LIM C.W. XU Feng 《浙江大学学报(A卷英文版)》2007,8(11):1740-1745

Semi-analytical elasticity solutions for bending of angle-ply laminates in cylindrical bending are presented using the state-space-based differential quadrature method (SSDQM). Partial differential state equation is derived from the basic equations of elasticity based on the state space concept. Then, the differential quadrature (DQ) technique is introduced to discretize the longitu- dinal domain of the plate so that a series of ordinary differential state equations are obtained at the discrete points. Meanwhile, the edge constrained conditions are handled directly using the stress and displacement components without the Saint-Venant principle. The thickness domain is solved analytically based on the state space formalism along with the continuity conditions at interfaces. The present method is validated by comparing the results to the exact solutions of Pagano’s problem. Numerical results for fully clamped thick laminates are presented, and the influences of ply angle on stress distributions are discussed.  相似文献   

“Those Who Can,Teach” ‐ The Pivotal Role of the Teacher in the Information and Communication Technologies (ICT) Learning Environment     

Cher Ping Lim  Sally Barnes 《Learning, Media and Technology》2002,27(1-2):19-40

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Cultural and linguistic diversity in early childhood teacher preparation: The impact of contextual characteristics on coursework and practica   总被引：1，自引：0，他引：1  

Chih-Ing Lim  Kelly L. Maxwell  Harriet Able-Boone  Catherine R. Zimmer 《Early childhood research quarterly》2009

The population of children in early childhood settings is becoming increasingly culturally and linguistically diverse, and these changes in demographics have warranted teachers becoming more culturally responsive and better prepared to work with diverse young children and families. Teacher preparation programs across the nation have responded differently to this critical issue, in part because of the different contexts in which they exist. Analyses were conducted using data from the National Prekindergarten Center’s (NPC) National Study of Early Childhood Teacher Preparation Programs and the National Center for Educational Statistics (NCES) Integrated Post-Secondary Education Dataset (IPEDS). Geographical, program, and institutional characteristics were analyzed from a sample of 416 Bachelor’s degree programs to determine how these variables were associated with the amount of diversity content and experience required in teacher preparation programs. Results indicated that the presence of non-White full-time faculty was positively related to more required coursework focused on working with children and families from culturally diverse backgrounds, while degree of urbanization, governance of institutions, and National Council for Accreditation of Teacher Education accreditation were associated with required coursework focused on working with bilingual children and English language learners. The percentage of the non-Hispanic White population in a state and geographic region were both associated with practica requirements focused on working with bilingual children and English language learners. Implications and recommendations for policy, future research, and early childhood teacher preparation are discussed.  相似文献   

Implementation of phase controlled impact device for enhancement of frequency response function in operational modal testing     

H.C. Lim  Zhi Chao Ong  A. Brandt 《Journal of The Franklin Institute》2018,355(1):291-313

This paper studies how to enhance frequency response function (FRF) estimation in the presence of harmonic disturbances during operational modal testing. A novel technique which utilizes impact-synchronous time averaging (ISTA) called impact-synchronous modal analysis (ISMA) was introduced where modal analysis can be performed in the presence of ambient forces. The phase angle information of the harmonic signal at the impact events is shown to be a key factor in enhancing the effectiveness of this technique. However, lack of knowledge and control of impact with respect to the phase angle of the disturbances using conventional impact hammer in ISMA has limited the effectiveness and practicality of this novel technique. A portable and automated phase controlled impact device is introduced in the effort to eliminate non-synchronous components with minimal possible impacts applied. This device makes use of the feeding phase angle information of responses from the cyclic load back to the device and imparts the impact at the correct time/phase which is always non-synchronous with respect to the phase of response from cyclic load. A reduced number of averages thereby expedite the overall modal testing procedure, an improved of FRF estimation and a good correlation of modal extraction data with benchmark data shown in this study has highlighted the advantages of ISTA using the proposed device.  相似文献   

The Political Transformation of Golf in Modern South Korea     

Youngsam Lim  Gwang Ok 《国际体育史杂志》2018,35(12-13):1254-1275

Abstract

Since golf was introduced to South Korea in the early 1900s, it has been strongly influenced by the politics that reflects socio-political contexts. Therefore, it is important to explore the political influences of golf on the context of its socio-political transformation. In this study, we explored how social and political backgrounds under each of the political administrations have affected the development of golf in South Korea. For this purpose, we utilized the socio-historical approach through document analysis to summarize the golf-related policy stances of nine presidential administrations from the Syngman Rhee government (1948–1960) to Park Geun-hye government (2013–2017). As a result, the Syngman Rhee administration pursued the construction of golf courses to bolster national security. The military regimes of Park Chung-hee and Chun Doo-hwan constructed golf courses as a means of cementing support among military circles to establish political legitimacy, and also as a means of diplomacy. The Roh Tae-woo administration initiated a construction boom in golf courses to promote sports for all. The Kim Young-sam administration announced a ‘no golf’ stance, while Kim Dae-jung and Roh Moo-hyun-both of whom had roots in the opposition-strove to encourage golf as a means of embracing their conservative counterparts while also diluting their progressive and contrarian image. Lee Myung-bak included golf among the core strategic tourist industries, while his successor, Park Geun-hye, first prohibited public officers from playing golf before pivoting to a supportive stance later on in her administration.  相似文献   

Service-Learning: Implications for the Academic,Personal, and Professional Development of Criminal Justice Majors     

Helen Ahn Lim 《Journal of Criminal Justice Education》2018,29(2):237-248

An exploratory senior and alumni survey was administered to better assess the experiential learning opportunities, including Service-Learning, offered to students in a criminal justice department. This article highlights the academic, personal and professional development of students, based on the perception of criminal justice majors in the department who completed a Service-Learning course. Educators continue to assess the academic outcomes for students and the benefits to the community. What may be less appreciated is how Service-Learning can also benefit students in their professional skills development. This article illustrates these potential benefits, and also discusses why Service-Learning courses are a critical part of development for criminal justice majors.  相似文献   

3D thermoelasticity solutions for functionally graded thick plates   总被引：1，自引：0，他引：1  

Ji Ying  Chao-feng Lü  C. W. Lim 《浙江大学学报(A卷英文版)》2009,10(3):327-336

Thermal-mechanical behavior of functionally graded thick plates, with one pair of opposite edges simply supported, is investigated based on 3D thermoelasticity. As for the arbitrary boundary conditions, a semi-analytical solution is presented via a hybrid approach combining the state space method and the technique of differential quadrature. The temperature field in the plate is determined according to the steady-state 3D thermal conduction. The Mori-Tanaka method with a power-law volume fraction profile is used to predict the effective material properties including the bulk and shear moduli, while the effective coefficient of thermal expansion and the thermal conductivity are estimated using other micromechanics-based models. To facilitate the implementation of state space analysis through the thickness direction, the approximate laminate model is employed to reduce the inhomogeneous plate into a homogeneous laminate that delivers a state equation with constant coefficients. The present solutions are validated by comparisons with the exact ones for both thin and thick plates. Effects of gradient indices, volume fraction of ceramics, and boundary conditions on the thermomechanical behavior of functionally graded plates are discussed.  相似文献   

Use of NSE/PS2m-transgenic mice in the study of the protective effect of exercise on Alzheimer's disease     

Jun Y Cho  Dae Y Hwang  Tae S Kang  Dong H Shin  Jin H Hwang  Chae H Lim 《Journal of sports sciences》2013,31(11):943-951

In its late stage, Alzheimer's disease results in progressive muscle weakness in the arms and legs. The aim of this study was to determine whether mice expressing the skeletal muscle-specific mutant PS2 gene (a model of Alzheimer's disease) are a useful experimental system to study the protective effect of exercise on Aβ-42 reduction, improvement of behavioural function and changes in metabolic parameters. With this aim in mind, the transgenic mice were subjected to treadmill exercise for 3 months. The results showed that in transgenic mice, but not in normal mice, treadmill exercise resulted in a reduction of Aβ-42 deposits and an improvement in behavioural function, thereby restoring normal concentrations of total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol and triglyceride. Thus, exercise may represent a practical therapeutic strategy for use with human patients with Alzheimer's disease.  相似文献