Internationalising a learning environment instrument for evaluating transnational online university courses     

Shelley Yeo  Peter Taylor  Martijntje Kulski 《Learning Environments Research》2006,9(2):179-194

This article describes the adaptation and validation of the Constructivist OnLine Learning Environment Survey (COLLES) for use in the transnational higher education context. As higher education becomes a more global phenomenon, ‘borderless’ education, either online or by distance education, is becoming a reality and there is a need for remote evaluation of course delivery and student learning. Curtin University of Technology is managing supported online delivery of Business Studies Degree and Diploma courses to four partner institutions of the African Virtual University, an initiative based in Nairobi, Kenya. Evaluation of students’ learning has included an online survey about the provision of resources and the quality of the learning environment in the various computer-based classrooms. Embedded in this instrument has been the adapted COLLES, providing a concomitant opportunity to test the properties and usefulness of the learning environment instrument. Problematic issues surrounding adaptation of the instrument have included the consequences of modifying the wording and establishing or confirming the meaning of the latent constructs in partially online courses and for transnational students. The process of establishing the validity and reliability of the scales is discussed.  相似文献   

Use of comics to enhance students’ learning for the development of the twenty-first century competencies in the mathematics classroom     

Tin Lam Toh  Lu Pien Cheng  Siew Yin Ho  Heng Jiang  Kam Ming Lim 《Asia Pacific Journal of Education》2017,37(4):437-452

Abstract

This paper discusses the use of comics in teaching mathematics in the secondary mathematics classroom. We explicate how the use of comics in teaching mathematics can prepare students for the twenty-first century competencies. We developed an alternative teaching package using comics for two lower secondary mathematics topics. This alternative teaching package consists of (1) several sets of comic strips expounding all related mathematical concepts in a lively way; (2) tiered practice questions for learning reinforcement; and (3) a set of proposed lesson outlines with suggestions on how to use the comics for mathematics teaching. We also report how one of the teachers in our study used this teaching package in her mathematics lessons. Her lessons were video-recorded and 11 students were interviewed to help us understand how the mathematics comics lessons were enacted and the students’ perception of comics as instruction. We identified instances in which the teacher tweaked the provided resource to further enhance student learning and incorporated elements of the twenty-first century competencies during her lessons. Through selected student interviews, we also identified instances in which students commented on their gain from the new approach from the perspective of the twenty-first century competencies.  相似文献   

毕-萨定律新义讨论     

陈玉新  陈廷侠 《新乡师范高等专科学校学报》2002,16(4):7-8

由毕 萨定律的数学表达式导出了运动元电荷在周围空间产生磁场的数学表达式———毕 萨定律的新形式 ,讨论了毕 萨定律的新的物理意义 ,指出毕 萨定律反映了运动元电荷在距其半径为r的球面上与另 1运动元电荷之间的作用力 ,并由毕 萨定律导出了“磁场高斯定理”。  相似文献   

Kathryn A. Neeley,Mary Somerville: Science,Illumination, and the Female Mind     

Yeo  Richard 《Metascience》2003,12(1):105-108

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Preface to Special Topic: Papers from the 13th International Conference on Surface and Colloid Science (ICSCS) and the 83rd ACS Colloid and Surface Science Symposium, Columbia University, New York, 2009     

Leslie Y. Yeo 《Biomicrofluidics》2010,4(1)

This Special Topic section is a compilation of several original contributions covering both fundamental and practical aspects of electrokinetic microfluidic phenomena that were presented during the Electrokinetics and Microfluidics sessions held at the conference.Electrokinetics is currently the mechanism of choice for the manipulation of fluids as well as colloidal and biological particles at microscale and nanoscale dimensions.¹ The popularity of electrokinetics is perhaps not so surprising as electrodes are easy to fabricate and embed into microfluidic chips, thus allowing the entire fluid and particle actuation mechanism to be completely integrated into the device. In addition, driving microfluidics with electric fields is relatively straightforward and allows for precise actuation. Nevertheless, considerable challenges remain in understanding the complex mechanisms associated with the hydrodynamics of conducting and dielectric fluids and particles under the influence of electric fields. Concomitantly, there has been an exponential increase in research and development in this field along both fundamental and applied themes in the past five years.This sustained growth in the microfluidics community of electrokinetics research has led to a sequel to the first Electrokinetic Phenomena and Microfluidics session at the 82nd ACS Colloid and Surface Science Symposium in Raleigh, NC, in 2008, and which we hope will now be a regular feature at successive ACS Colloid and Surface Science meetings. This year at the combined 2009 13th International Conference on Surface and Colloid Science (ICSCS) and the 83rd ACS Colloid and Surface Science Symposium in New York, the Electrokinetics and Microfluidics symposium proved to be extremely popular, with three keynote lectures presented by Professor Howard Stone, Professor Hsueh-Chia Chang, and Professor Thomas Healy, and 44 oral presentations. In both 2008 and 2009, Biomicrofluidics has organized a special issue to cover some of the contributions reported at these meetings.²The growing interest in using electric fields to manipulate biological entities such as cells, DNA, and even single molecules is reflected in this year’s collection of papers with dielectrophoretic (DEP) phenomena comprising the bulk of the contributions. In Ref. ³, a new theory to describe Stern layer conductance along the surface of nanocolloids is proposed, forming the basis for the derivation of a more accurate prediction of the DEP crossover frequency. This theory is then employed to determine the conformation and, hence, optimum coverage of oligonucleotides on the surface of nanocolloid functionalized molecular probes during DNA hybridization under the influence of DEP, which can be exploited for biomolecular sensing. Other fundamental DEP papers include the investigation of particle motion under DEP induced optically via a photoconductor, in which Zhu et al.⁴ characterized the frequency dependence of the motion through the synchronous velocity spectra of the particles, and a numerical study of particle trapping at the throat of converging-diverging microchannels under the influence of negative DEP using a transient arbitrary Lagrangian–Eulerian finite element method.⁵ A more practical implementation is, on the other hand, reported by Yang et al.⁶ in which the negative DEP is exploited to separate colorectal cancer cells from other cells in a microfluidic device as a demonstration of a portable cancer detection tool.Continuing along the separation theme, but with regard to DNA separation using pulsed-field gel electrophoresis aided by sparse but regularly ordered microfabricated arrays of nanoposts, is a Brownian dynamics simulation model reported by Ou et al.⁷ in which DNA channeling, which predicts that the motion of DNA is undisturbed by the presence of arrays for large spacing to DNA equilibrium size ratios and when the field lines are straight, is predicted, consistent with experimental observations. In another fundamental paper, a direct numerical simulation model is presented to predict the current-voltage relationship across conducting pores along cell membranes, which is of fundamental importance in the electroporation process.⁸We hope that you will enjoy reading the contributions in this special topic and that it encourages you to participate in future Electrokinetics and Microfluidics meetings at the ACS Colloid and Surface Science Symposia, which we definitely hope will continue on a regular basis.  相似文献   

Framework of a Decision-Theoretic Tutoring System for Learning of Mechanics     

Pek  Peng-Kiat  Poh  Kim-Leng 《Journal of Science Education and Technology》2000,9(4):343-356

This paper presents the application of decision-theoretic technique to computer-based tutoring system for elementary mechanics. The technique uses sound probabilistic reasoning and a student model to identify learner's misconception(s). Bayesian belief networks are the building blocks of the student model. The probability values in Bayes' nets are provided by teacher and are based on her judgement, but may be substituted with actual statistics. Evidence on student's mastery of concepts is obtained through her responses to appropriately selected items. Subsequently, Rasch one-parameter model is used to calibrate the item and person parameters (also known as difficulty and ability indices, respectively). The system is able to provide teacher with information for fine-tuning her pedagogical instructions and guide her in coaching students. It is also able to provide students with immediate feedback to improve their proficiencies and ultimately their grades.  相似文献   

Exploring the Meanings of Hijab through Online Comments in Canada     

Osmud Rahman  Benjamin Fung  Alexia Yeo 《Journal of Intercultural Communication Research》2016,45(3):214-232

Controversies surrounding ethnic dress such as hijab have increased public awareness about cultural diversity. The number of comments posted on online media make it evident that many people are concerned about ethnic attire, cultural differences and social cohesion. Although researchers have examined the meanings of veiling, the relationships between hijab and public opinion have seldom been investigated. The overarching objective of this study was to understand the relationships between Islamic attire and online readers’ opinion. In light of the limitations in the previous studies on this topic, this study attempts to fill the gap by studying posters’ opinions toward hijab through publicly available online information in the form of posted comments.  相似文献   

Picture of a school     

Naw Tin Su Thein 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1962,7(4):466-470

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Organosilane deposition for microfluidic applications     

Glass NR  Tjeung R  Chan P  Yeo LY  Friend JR 《Biomicrofluidics》2011,5(3):36501-365017

Treatment of surfaces to change the interaction of fluids with them is a critical step in constructing useful microfluidics devices, especially those used in biological applications. Silanization, the generic term applied to the formation of organosilane monolayers on substrates, is both widely reported in the literature and troublesome in actual application for the uninitiated. These monolayers can be subsequently modified to produce a surface of a specific functionality. Here various organosilane deposition protocols and some application notes are provided as a basis for the novice reader to construct their own silanization procedures, and as a practical resource to a broader range of techniques even for the experienced user.  相似文献   

Letter in response to “Implications of harmonizing the future of the federal depository library program within e-government principles and policies” (Government Information Quarterly, 27:1)     

James R. Jacobs  James A. JacobsShinjoung Yeo 《Government Information Quarterly》2011,28(1):e1

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