Experimental and numerical investigation of buckling in rectangular steel plates with groove-shaped cutouts

Steel plates are widely used in various structures, such as the deck and bodies of ships and bridges, and in the aerospace industry. In many instances, these plates are subjected to axial compression loads that predispose the sheets to instability and buckling. In this study, we investigate the buckling and post-buckling behaviors of steel plates having groove-shaped cutouts of various dimensions and angles using finite element method (FEM) (by ABAQUS software) and experimental tests (by an Instron servohydraulic machine). Boundary conditions were clamped by supports at upper and lower ends and free supports at the other edges. The results of both numerical and experimental analyses are compared, which show a very good agreement between them. Finally, based on the experimental findings, formulas are presented for the determination of the buckling load of such plates.     

How are medical students trained to locate biomedical information to practice evidence-based medicine? a review of the 2007–2012 literature

Objectives:

This study describes how information retrieval skills are taught in evidence-based medicine (EBM) at the undergraduate medical education (UGME) level.

Methods:

The authors systematically searched MEDLINE, Scopus, Educational Resource Information Center, Web of Science, and Evidence-Based Medicine Reviews for English-language articles published between 2007 and 2012 describing information retrieval training to support EBM. Data on learning environment, frequency of training, learner characteristics, resources and information skills taught, teaching modalities, and instructor roles were compiled and analyzed.

Results:

Twelve studies were identified for analysis. Studies were set in the United States (9), Australia (1), the Czech Republic (1), and Iran (1). Most trainings (7) featured multiple sessions with trainings offered to preclinical students (5) and clinical students (6). A single study described a longitudinal training experience. A variety of information resources were introduced, including PubMed, DynaMed, UpToDate, and AccessMedicine. The majority of the interventions (10) were classified as interactive teaching sessions in classroom settings. Librarians played major and collaborative roles with physicians in teaching and designing training. Unfortunately, few studies provided details of information skills activities or evaluations, making them difficult to evaluate and replicate.

Conclusions:

This study reviewed the literature and characterized how EBM search skills are taught in UGME. Details are provided on learning environment, frequency of training, level of learners, resources and skills trained, and instructor roles.

Implications:

The results suggest a number of steps that librarians can take to improve information skills training including using a longitudinal approach, integrating consumer health resources, and developing robust assessments.     

Associations Between Child Disabilities and Caregiver Discipline and Violence in Low‐ and Middle‐Income Countries

Using nationally representative samples of 45,964 two‐ to nine‐year‐old children and their primary caregivers in 17 developing countries, this study examined the relations between children's cognitive, language, sensory, and motor disabilities and caregivers' use of discipline and violence. Primary caregivers reported on their child's disabilities and whether they or anyone in their household had used nonviolent discipline, psychological aggression, and physical violence toward the target child and believed that using corporal punishment is necessary. Logistic regression analyses supported the hypothesis that children with disabilities are treated more harshly than children without disabilities. The findings suggest that policies and interventions are needed to work toward the United Nations' goals of ensuring that children with disabilities are protected from abuse and violence.     

Destination choice of cross-border Chinese students: an importance-performance analysis

Higher education institutions are competing with one another to recruit students. As a major developing country with emphasis on human capital development, China has the largest group of tertiary students studying locally and aboard, including cross-border students in the Greater China region. This paper examines the destination choice of cross-border Chinese students. The empirical findings reveal that the most important attributes are programme reputation, recognition of university qualifications, availability of course information, safety and cost of living in the host cities. Importance-performance analysis was applied to the survey data. Results show that students are satisfied with the safety aspect, but not with the cost of living. Regression analysis indicates that student satisfaction was significantly affected by the perceived value of the programme, followed by accessibility. These findings can help improve the quality of education services of higher education administration by addressing the perceptions and concerns of cross-border Chinese students.     

Televised violence and viewers’ perceptions of social reality: The Korean case

This study attempts to describe some possible elaborations of the cultivation hypothesis and present relevant evidence from a Korean student sample. Using the postulates and methodology of the cultivation analysis approach to mass communication, this investigation employs a two‐pronged research strategy: message system analysis and cultivation analysis. Message system analysis consisted of one‐week sample of Korean television programs from the three television networks in June 1991. For cultivation analysis, a questionnaire was administered to 1,200 Korean students attending eight junior and senior high schools from five different states in July, 1991. Within the clear limitations of measures, the results suggested that viewers differentially perceive the social reality of different content types. The findings seem to indicate that the degree of cultivation effects is not uniform across different kinds of television programming.     

Collaborating with Information Technology: Implementing Web Search at the University of New Mexico

The University of New Mexico (UNM) has used the Google Search Appliance (GSA) to provide search for the University's Web content. When the GSA license expired, the campus Information Technologies (IT) department and the University Libraries (UL) took the opportunity to collaborate on a re-launch of the service as a joint project. By collaborating closely with IT, the UL personnel gained insight and first-hand information on how to optimize the Libraries’ Web presence. Outcomes were positive, both in the resulting product and in building bridges between the work cultures.     

Drugs and the Brain: Learning the impact of methamphetamine abuse on the brain through a virtual brain exhibit in the museum

Drugs and the Brain: A Serious Game, a prototype museum exhibit, was designed to employ virtual models of the brain into a video game format. It was done to create a fun and engaging way of conveying knowledge and concepts about neuroscience, as well as the impact of methamphetamine abuse on the brain. The purpose of this study is to evaluate this prototype exhibit that promises to educate participants from various age, ethnicity, and gender backgrounds, and to establish a stronger concept of drug abuse prevention among children. A quantitative methodology using the pre‐ and post‐experimental designs was conducted on 175 museum visitors. A series of two‐sample paired t‐tests and subsequent ANOVAs were performed to examine the difference between pre‐ and post‐tests and to determine if there was a difference in the results in age, gender, ethnicity, and race. Results showed that both the understanding and attitudes of the participants toward the impact of methamphetamine abuse on the brain improved significantly (p < 0.01).     

Collaborative handheld gaming in education

This project describes the trialling of a new form of cooperative learning strategy, in the form of a game known as EcoRangers. EcoRangers is a multi‐player game designed to run on mobile phones, written specifically for education. EcoRangers is one of the first, if not the world's first, instances of this totally new genre of pedagogical tools (i.e. collaborative handheld educational games). In its current iteration EcoRangers is designed to help students practise skills of relevance to the social studies syllabus for Grades 9 and 10 in Singapore's education system, specifically through the pedagogical strategy known as the ‘structured academic controversy’, in which learners debate an open‐ended problem from a variety of perspectives. The trialling was done in three secondary schools, among 50 Grade 9 students. These students were taken through two distinct fieldwork tasks in March–July 2004, with the game being introduced as part of a post‐fieldwork activity.

Jeux collaboratifs sur portables en éducation

Ce projet décrit l'expérimentation d'une nouvelle forme de stratégie d'apprentissage coopératif sous la forme d'un jeu connu sous le nom d'EcoRangers.EcoRangers se joue à plusieurs.Il a été conçu pour fonctionner sur les téléphones portables et composé spécialement pour L'éducation. EcoRangers est un des premiers sinon le premier exemple au monde de cette catégorie d'outils pédagogiques (celle des jeux éducatifs collaboratifs portables) totalement nouvelle. Sous sa forme actuelle EcoRangers a été conçu pour aider les élèves à pratiquer des savoir faire correspondant au cursus de sciences sociales pour les classes 9 et 10 du système Singapourien(13‐14 ans) et plus particulièrement la stratégie connue sous le nom de « controverse académique structurée » au cours de laquelle les apprenants débatent d'un problème ouvert en partant de perspectives différentes.L'expérience a été menée dans trois écoles secondaires avec 50 élèves de 9^e.Ces élèves ont participé à deux tâches « de terrain » distinctes entre mars et juillet 2004,le jeu étant présenté comme faisant partie d'une activité « d'après‐terrain ».

Gemeinschafliches Spielen auf Handhelds oder Handys als Unterricht

Das Projekt beschreibt den Versuch, eine neue Art von Gruppenlernen zu testen, die auf ein Spiel zurück greift, das EcoRangers genannt wird. Dies ist ein Spiel für mehrere Spieler, das auf Handys abläuft und ein Lernspiel ist. EcoRangers ist eines der ersten, wenn nicht sogar das erste Spiel in der Welt, dieser Art. In seiner gegenwärtigen Fassung hilft EcoRangers den Schuelern, Fertigkeiten im Bereich der Social Studies (Gemeinschaftskunde) einzuueben (Lehrplan für Stufe 9 und 10 in Singapur), insbesondere dadurch, dass die Strategie der ‘strukturierten, akademischen Diskussion’ angewendet wird, bei der die Schueler ein offenes Problem aus sehr unterschiedlichen Perspektiven besprechen. Der Versuch wurde in drei Schulen (Sek.II) durchgeführt, wobei 50 Schueler aus Stufe 9 waren. Diese wurden im Rahmen eines Aufenthalts im Gelaende (Maerz–Juli 2004) mit dem Spiel konfrontiert, das als eine Tätigkeit nach dem Arbeiten im Gelände eingefuehrt wurde.     

澳门特区免费幼儿教育政策研究

澳门特区自2007～2008学年开始实施15年免费教育,即9年义务教育、3年高中教育和3年学前教育免费.研究者运用网络调查及访谈法,对澳门特区免费幼儿教育政策进行研究,结果发现:(1)免费幼儿教育政策只适用于6家公办幼儿园和42家加入免费教育学校系统的私立幼儿园.(2)7家未加入免费教育学校系统的私立幼儿园需缴学费、补充服务费和选择性服务费,但可获政府发放的学费津贴和书簿费.家长很满意这一政策,并表示愿意继续送孩子上收费的私立幼儿园.(3)受访园(校)长、家长及教师对澳门的免费幼儿教育政策都很满意,教师特别满意政府推出的幼儿园教师津贴.(4)免费幼儿教育政策对私立园所的影响有所不同:有些私立园所为了生存而选择加入免费教育学校系统,有些私立园所则为了校政自主而选择不加入免费教育学校系统.客观上,高收费门槛令不同阶层家庭的幼儿自然分流.