Second Life to support Multicultural Literacy: Pre- and In-service Teachers' Perceptions and Expectations     

Tahani Ibrahim Aldosemani  Craig E. Shepherd 《TechTrends》2014,58(2):46-58

The purpose of the study was to examine preservice teachers’ attitudes using Second Life for multicultural literacy and to explore effective strategies to implement this technology in teacher preparation programs. Participants included thirty-six preserve teachers from early childhood, elementary, and secondary education programs. Participants indicated that interacting with cultural artifacts and diverse populations promoted multiculturalism, 47.5% reported that Second Life supported the development of multicultural attitudes and 50% indicated that Second Life can support multicultural respect. Additionally, 33.4% considered Second Life an effective learning tool for K-12 education while 40% remained undecided. Participants questioned the veracity of certain objects, often failed to communicate with individuals from other cultures, and worried about inappropriate content. Despite these limitations, Second Life could serve as a rich environment to build multicultural knowledge through culturally representative locations, artifacts, and communication. Suggestions for incorporating multicultural experiences via Second Life are presented.  相似文献   

Modeling, simulation, and applied optimization     

Mohamed El-Tarhuni  Jamal A. Abdalla  Ibrahim Sadek  Ismail Kucuk  Mahmoud Anabtawi  Mohammad Al-Jarrah 《Journal of The Franklin Institute》2011,348(7):1161-1162

  相似文献   

Application of iterated Laplace transformation to tracer transients in heterogeneous porous media     

Ibrahim Kocabas 《Journal of The Franklin Institute》2011,348(7):1339-1362

The Laplace transformation technique has been widely applied to modeling of tracer transport in oil and geothermal reservoirs, and in groundwater aquifers. However, mathematical models of many flow and transport problems could only be obtained as Laplace space solutions, and hence, their computations had to involve a numerical inversion technique.In this work, we employ the iterated Laplace transformation technique to develop novel closed form solutions to the tracer transport models in heterogeneous media. Two types of configurations have been considered: tracer transport in single fracture located in low-permeability matrix and tracer transport in a double porosity medium consisting of flowing and dead-end pore systems. In addition, both linear and radial flow geometries have been considered for both configurations. Applications of iterated Laplace transform technique to these four types of models are presented as fundamental examples and their numerical results were used as benchmarking for the numerical inversion results from Stehfest and Dubner and Abate algorithms.As the technique is quite versatile, we expect that the method should gain widespread acceptance to develop solutions to a wide range of problems in flow and transport in porous media and improve the application of nonlinear regression technique to these solutions.This work has achieved four important objectives: first, two novel Laplace transform relations that are useful in tracer studies are presented. Second, the present work serves to verify/invalidate the results of numerical inversion algorithms. In addition, it provides better insight into tracer transport mechanisms. Finally, it serves as a powerful tool of design and interpretation of tracer tests. All four objectives are illustrated in this work.  相似文献   

University of Wisconsin‐Whitewater: A Journey Toward Sustained Excellence in Assessment     

Amal Ibrahim  Joan Littlefield Cook  Kathryn Casey 《Assessment Update》2021,33(1):1-16

  相似文献   

Showing Is Knowing: The Potential and Challenges of Using Neurocognitive Measures of Implicit Learning in the Classroom     

Ibrahim Dahlstrom‐Hakki  Jodi Asbell‐Clarke  Elizabeth Rowe 《Mind, Brain, and Education》2019,13(1):30-40

The value of neurocognitive measures to study memory, attention, cognition, and learning is well established. However, the vast majority of work using these tools is performed in tightly controlled lab experiments using simple lab stimuli. This article looks at the viability of using multimodal neurocognitive instruments to measure implicit knowledge in real‐world learning contexts. We focus on some of the most promising neurocognitive tools for this purpose, including eye‐tracking, electroencephalography (EEG), and functional near infra‐red spectroscopy (fNIRS). The specific challenges and potential of each tool are considered for use within learning contexts. These tools may be of particular importance to student populations that typically underperform on traditional learning assessments, including students with disabilities, English language learners, and students from low socioeconomic status backgrounds, among others. This review concludes with recommendations to the field for further work required to bring objective measures of implicit knowledge to real world learning contexts.  相似文献   

Modes of organizing biomedical innovation in the UK and US and the role of integrative and relational capabilities     

Jacky Swan  Anna Goussevskaia  Sue Newell  Maxine Robertson  Ademola Obembe 《Research Policy》2007,36(4):529-547

Given that biomedical innovation involves intense collaboration across disciplines, occupations and organizations, a nation's integrative capabilities (the ability to move between basic science and clinical development) and relational capabilities (the ability to collaborate with diverse organizations) have been identified as crucial. This paper deploys qualitative analysis of biomedical innovation in the UK and US to identify mechanisms influencing innovation at the project level through which these macro level capabilities may have effects. From this a propositional framework is developed that helps explain the likely impact of such capabilities for characteristically different kinds of innovation projects at the micro level.  相似文献   

Active vibration control of an elastically connected double-string continuous system     

Ismail Kucuk  Ibrahim Sadek 《Journal of The Franklin Institute》2007,344(5):684-697

The paper deals with the optimal control of a distributed host structure consisting of two elastically connected complex continuous double-string system and subjected to certain excitation load. Investigation of the behavior of such system is of great theoretical and practical importance. A technique is proposed to actively damp out the undesired vibrations in the structures by a combination of applied actuators and displacement feedback gains. Two performance measures, involving energies at the terminal time as well as applied and feedback control efforts, are introduced. The optimality conditions of the applied actuators are derived by using the method of eigenfunction expansion and calculus of variations. The feedback parameters are numerically determined from the solution of a minimization problem. The proposed approach is illustrated by a numerical example involving a system which consists of two strings subjected to a continuous load.  相似文献   

Confirmatory studies on the antioxidant and antidiabetic effect of quercetin in rats     

Mohamed Ahmed Abdelmoaty  M. A. Ibrahim  N. S. Ahmed  M. A. Abdelaziz 《Indian journal of clinical biochemistry : IJCB》2010,25(2):188-192

Quercetin (QE), one of natural flavanoid group, was widely distributed as a secondary metabolite in plant kingdom. It has been believed that oxidative stress plays a role in the pathogenesis of diabetes mellitus (DM). The aim of the present study was the evaluation of possible effects of QE on blood glucose and antioxidant enzymes in experimental streptozotocin (STZ)-induced diabetes in rats. STZ was injected intraperitoneally with single dose of 50 mg/kg for diabetes induction. QE (15 mg/kg bw day, intraperitoneal (i.p.) injection) was injected for 3 days prior to STZ administration; these injections were continued to the end of the study (for 25 days). Glucose tolerance test and random plasma glucose were done for all animals. Cellular antioxidant enzymes such as glutathione peroxidase (GSHPx), superoxide dismutase (SOD) and catalase (CAT) activities were measured in pancreatic homogenates. Quercetin had no effect on plasma glucose level of normal animals but its pre- treatment was able to prevent diabetes induced by single intraperitoneal injection of streptozocintreated rats. Antioxidant enzyme activity significantly decreased in STZ induced diabetic group. QE treatment significantly increased the antioxidant enzyme activities. It could be concluded that quercetin, a flavonoid with antioxidant properties, exerting its beneficial antidiabetic effects.  相似文献   

A comparative study of the effects of cultural differences on the adoption of mobile learning          下载免费PDF全文

Ibrahim Arpaci 《British journal of educational technology : journal of the Council for Educational Technology》2015,46(4):699-712

The objective of this paper is to understand the impact of cultural differences on mobile learning adoption through identifying key adoption characteristics in Canada and Turkey, which have markedly different cultural backgrounds. A multi‐group analysis was employed to test the hypothesised relationships based on the data collected by means of survey questionnaires from 190 and 163 undergraduate students in Turkey and Canada respectively. The results indicated that there is a strong relationship between culture and adoption behaviour, and there are major differences in patterns between the adoption behaviours of the two countries. Implications of these findings are discussed.  相似文献   

Anatomy "steeplechase" online: necessity sometimes is the catalyst for innovation     

Inuwa IM  Al Rawahy M  Taranikanti V  Habbal O 《Anatomical sciences education》2011,4(2):115-118

In most medical schools, summative practical examination in Anatomy usually takes the format of a “steeplechase” (“spotters” or “bell ringers”) conducted in the gross anatomy laboratory using cadaveric material and prosected specimens. Recently, we have started to administer similar examinations online using the quiz facility in WebCT? and Moodle?. This article chronicles how we conceived and developed this method within the peculiar nature of our medical school setting. Over a five year period, practical summative examinations were organized as “steeplechase” online. The online examinations were administered using WebCT? and later Moodle? learning management software. Assessment “objects” were created from the materials available for anatomy teaching. These were digital images of cadaveric materials, radiological, and prosected specimens. In addition, short video clips of 30 seconds duration demonstrating muscle action were produced. These objects were optimized for online viewing and then uploaded onto the learning management software. A bank of questions (multiple choice or short answer type) was then created and linked to the assessment objects. These were used in place of the steeplechase in the computer laboratory. This method serves a crucial purpose in places like ours where continuous availability of human cadavers is impossible. Although time consuming initially, once questions are setup online, future retrieval, and administration becomes convenient especially where there are large batches of students. In addition, the online environment offers distinct advantages with regards to image quality, psychometric analysis of the examination and reduction of staff preparation time compared to traditional “steeplechase.” Anat Sci Educ 4: 115–118, 2011. © 2010 American Association of Anatomists.  相似文献