Issues and challenges of teaching and learning in 3D virtual worlds: real life case studies

We aimed to study the characteristics and usage patterns of 3D virtual worlds in the context of teaching and learning. To achieve this, we organised a full‐day workshop to explore, discuss and investigate the educational use of 3D virtual worlds. Thirty participants took part in the workshop. All conversations were recorded and transcribed for analysis. Thematic analysis was carried out to identify prominent issues and topics. We found that to fully utilise 3D virtual worlds for teaching and learning, students, tutors and educational institutions face a number of socio‐psychological, pedagogical and technological challenges. The paper highlights and discusses the issues that emerged from the workshop, supporting them with real life experiences and case studies provided by the workshop participants.

Probleme und Herausforderungen des Unterrichtens und Lernens in virtuellen 3D Welten: “echte” Lebensfallstudien

Wir hatten zum Ziel, die Eigenschaften und die Gebrauchsweise von 3D‐virtuellen Welten im Zusammenhang mit Unterricht und Lernen zu studieren. Dazu organisierten wir einen ganztägigen Workshop, um den Gebrauch von 3D virtuellen Welten im Bildungsbereich zu erforschen, zu besprechen und zu untersuchen. Dreißig Teilnehmer nahmen an diesem Workshop teil. Alle Gespräche wurden aufgezeichnet und für die Analyse transskribiert. Eine thematische Analyse wurde ausgeführt, um gängige Probleme und Themen herauszufinden. Wir meinen, dass, um virtuelle 3D‐Welten komplett zu verwerten, um darin zu unterrichten und Erfahrungen zu sammeln, Studenten, Tutoren und Bildungseinrichtungen mehreren sozialpsychologischen, pädagogischen und technologischen Herausforderungen gegenüberstehen. Dieser Beitrag beleuchtet und bespricht die Probleme, die innerhalb des Workshops auftauchten und unterstützt ihr Verständnis durch von den Workshopteilnehmern selbst zur Verfügung gestellten Lebenserfahrungen und Fallstudien.

Problèmes et défis de l’enseignement/apprentissage dans des mondes virtuels en 3D: des études de cas empruntés à la vie réelle

Nous avions pour but d’étudier les caractéristiques et les schémas d’usage des mondes virtuels en 3D dans un contexte d’enseignement et apprentissage. Pour y parvenir, nous avons organisé un atelier d’une journée entière pour débattre, explorer et mener une recherche sur l’emploi éducatif des mondes virtuels en 3D. L’atelier a accueilli 30 participants. Toutes les conversations ont été enregistrées et transcrites à des fins d’analyse. On a effectué une analyse thématique pour identifier les problèmes et les thèmes les plus marquants. Nous avons découvert que pour utiliser à fond les mondes virtuels en 3D pour l’enseignement et l’apprentissage, les étudiants, les tuteurs et les institutions éducatives doivent faire face à un certain nombre de défis socio‐psychologiques, pédagogiques et technologiques. Dans cet article l’accent et le débat portent sur les questions qui sont apparues au cours de l’atelier, le tout appuyé sur des expériences de la vie réelle et sur des études de cas fournies par les participants à l’atelier.

Problemas y desafíos de la enseñanza/aprendizaje en mundos virtuales 3D: estudios de casos de la vida real

Nuestro propósito era el estudio de las características y de los esquemas de uso de los mundos virtuales 3D dentro del contexto de la enseñanza/aprendizaje. Para llevar esto a cabo hemos organizado un taller de un día completo para explorar, discutir y investigar el uso educativo de los mundos virtuales 3D. Treinta personas participaron en el taller. Todas las conversaciones fueron grabadas y transcribidas para ser analizadas. Un análisis temático fué realizado para identificar los temas y problemas más destacados. Hemos descubierto que para aprovechar plenamente los mundos virtuales 3D para la enseñanza/aprendizaje, los alumnos, los tutores y las instituciones educativas tienen que hacer frente a un número de desafíos socio‐psicológicos, pedagógicos y tecnológicos. En el artículo los autores destacan y discuten los problemas que han surgido del taller, apoyandoles con experiencias de la vida real y estudios de casos suministrados por los participantes del taller.     

Knowledge building: aligning education with needs for knowledge creation in the digital age

Educational technology research and development - This paper examines the alignment of education with the needs for knowledge creation in the digital age using the Knowledge Building model and...     

关于具有测边导坑和有限岩石覆盖层的隧道开口的离散分析（英文）

目的:针对新加坡的花岗岩地质结构,研究将典型马蹄形隧道挖掘成双拱隧道时岩石支撑的设计问题。利用离散元法分析侧边导坑对隧道主体开口的影响。创新点:1.基于平面应变假设,提出一个针对性的离散元模型以分析侧边导坑的设置对主体隧道支撑的影响;2.此模型适用于解决底下长跨度开口的支撑设计问题,如大众捷运系统隧道和紧贴式双孔隧道的建造,补充了传统经验主义的设计方法。方法:1.采用离散元法对马蹄形隧道开口支撑问题进行非连续分析;2.采用二维平面应变模型简化问题。结论:1.离散元法可用于分析有限岩石覆盖层的失效机制,单隧道支撑要求以及增加侧边导坑后的支撑要求;2.模型计算结果显示,侧边导坑的挖掘使得支柱总的螺栓连接作用力增加了一倍。     

Teachers' motivation to teach national education in Singapore: a self-determination theory approach

The National Education (NE) programme was set up in Singapore schools in 1997 to inculcate a national identity and values in the younger generation. Teachers in schools are given the important role of developing a shared sense of nationhood among their students. However, no study has yet examined the motivations for teaching NE in schools. The purpose of this study was to examine pre-service teachers' motivations, perceptions of NE, perceived competence to teach NE and feelings on the NE programme provided in their teacher training course, using the cluster analysis method. The study involved 4242 pre-service teachers (1229 males, 2986 females, 27 missing information) from the National Institute of Education (NIE) in Singapore. The results showed that 15.6% of the teachers belonged to a “high amotivation” cluster, 38.0% formed a “high externally regulated” cluster, 19.9% made up a cluster labelled as “low externally regulated”, and the rest (26.5%) had an “intrinsically regulated” profile. The four clusters showed significant gender and programme differences. In summary, the results from the cluster analysis supported the concurrent validity of the clusters in terms of pre-service teachers' perceptions of their involvement in NE activities, its importance, NE as government propaganda, competence to teach NE and satisfaction with the NE programme provided in their teacher training course.     

Widening Our Global View: The Development of Career Counseling Services for International Students

The increased number of international students in United States universities and colleges have created the need for the development of services that appropriately reflect their needs and characteristics. The Career Center at the University of Missouri, Columbia reacted to this phenomenon by developing career services exclusively for international students. Career services are provided as individual services and online services, and consist of information on graduate schools and entrance examination practices, information on available employment opportunities and work permit policies, career assessments, and information about specific skills for obtaining a job in the United States. Several marketing strategies were used to ensure international students' use of services. Important points in developing career services for international students are presented.     

A microfluidic co-culture system to monitor tumor-stromal interactions on a chip

The living cells are arranged in a complex natural environment wherein they interact with extracellular matrix and other neighboring cells. Cell-cell interactions, especially those between distinct phenotypes, have attracted particular interest due to the significant physiological relevance they can reveal for both fundamental and applied biomedical research. To study cell-cell interactions, it is necessary to develop co-culture systems, where different cell types can be cultured within the same confined space. Although the current advancement in lab-on-a-chip technology has allowed the creation of in vitro models to mimic the complexity of in vivo environment, it is still rather challenging to create such co-culture systems for easy control of different colonies of cells. In this paper, we have demonstrated a straightforward method for the development of an on-chip co-culture system. It involves a series of steps to selectively change the surface property for discriminative cell seeding and to induce cellular interaction in a co-culture region. Bone marrow stromal cells (HS5) and a liver tumor cell line (HuH7) have been used to demonstrate this co-culture model. The cell migration and cellular interaction have been analyzed using microscopy and biochemical assays. This co-culture system could be used as a disease model to obtain biological insight of pathological progression, as well as a tool to evaluate the efficacy of different drugs for pharmaceutical studies.     

The effects of cultural and historical information and contribution threshold on public contributions: an experimental study on the conservation of heritage houses in Penang,Malaysia

Budget constraints at the local government level towards the provision of public goods have fuelled interest in the voluntary contribution and provision point mechanisms. However, due to their public nature, these mechanisms are not without problems. The literature shows the presence of free riding and socially inefficient contribution levels. This paper experimentally tests the effect of cultural and historical information pertaining to heritage houses in Penang, Malaysia, on public contributions for their conservation. This paper considers a standard linear one-shot four-person public good game and the decision of the subjects being to contribute either to a private or to a public account. We devise 4 treatments: a Control treatment, a treatment where subjects are provided with cultural and historical information pertaining to the heritage houses, a treatment that includes a contribution threshold, and finally a treatment that combines the use of cultural and historical information with the contribution threshold. The main finding shows that 60–75 % of the subjects contributed more than what they believed others in the same group would contribute when they were provided with the pertinent cultural and historical information. Most of the subjects contributed less than their belief, while 75–77 % cooperated ‘selfishly’ in treatments without the information. These findings are in agreement with the literature, namely that contributions are higher in treatments with a contribution threshold. Moreover, the combination of a contribution threshold and cultural information could encourage more pro-social behaviours.     

Detecting Differential Speededness in Multistage Testing

A potential undesirable effect of multistage testing is differential speededness, which happens if some of the test takers run out of time because they receive subtests with items that are more time intensive than others. This article shows how a probabilistic response-time model can be used for estimating differences in time intensities and speed between subtests and test takers and detecting differential speededness. An empirical data set for a multistage test in the computerized CPA Exam was used to demonstrate the procedures. Although the more difficult subtests appeared to have items that were more time intensive than the easier subtests, an analysis of the residual response times did not reveal any significant differential speededness because the time limit appeared to be appropriate. In a separate analysis, within each of the subtests, we found minor but consistent patterns of residual times that are believed to be due to a warm-up effect, that is, use of more time on the initial items than they actually need.