Stress intensity factors under combined bending and torsion moments     

Al?Emran?IsmailEmail author  Ahmad?Kamal?Ariffin  Shahrum?Abdullah  Mariyam?Jameelah?Ghazali  Mohammed?Abdulrazzaq  Ruslizam?Daud 《浙江大学学报(A卷英文版)》2012,13(1):1-8

This paper discusses stress intensity factor (SIF) calculations for surface cracks in round bars subjected to combined torsion and bending loadings. Different crack aspect ratios, a/b, ranging from 0.0 to 1.2 and relative crack depths, a/D, ranging from 0.1 to 0.6 were considered. Since the loading was non-symmetrical for torsion loadings, a whole finite element model was constructed. Then, the individual and combined bending and torsion loadings were remotely applied to the model. The equivalent SIF method, F*_EQ, was then used explicitly to combine the individual SIFs from the bending and torsion loadings. A comparison was then carried out with the combined SIF, F*_FE, obtained using the finite element analysis (FEA) under similar loadings. It was found that the equivalent SIF method successfully predicted the combined SIF for Mode I. However, discrepancies between the results determined from the different approaches occurred when F _III was involved. It was also noted that the predicted F*_FE using FEA was higher than the F*_EQ predicted through the equivalent SIF method due to the difference in crack face interactions.  相似文献   

A “research” into international student-related research: (Re)Visualising our stand?     

Doria Abdullah  Mohd Ismail Abd Aziz  Abdul Latiff Mohd Ibrahim 《Higher Education》2014,67(3):235-253

This paper uses Tight (High Educ Res Dev 23(4):395–411, 2004; High Educ Res Dev 31(5):723–740, 2012; High Educ Res Dev 32(1):136–151, 2013)’s journal analysis and review framework to review a sample of 497 journal articles on researches concerning international students over the past 30 years. It was found that a majority of the articles focus on the students’ in-campus, academic and social experience. Even with different conceptualisation of the terms “international student” and “international student mobility”, international students undergo similar challenges throughout their sojourn duration, and much of the responsibilities in managing international students fall on universities and respective faculty members within the institutions. It might seem as if we are going in circles in terms of the issues and concerns in managing international students, but the silver lining out of this observation is the increased ethnical awareness among countries and higher education institutions in hosting and safeguarding the students throughout their international higher education experience, albeit rather slowly. The analysis brings to attention how much have we achieved in internationalisation of higher education in general and international student-related research in particular, and the potential for greater expansion and focus on managing the student population within a comprehensive “life cycle” approach.  相似文献   

Academics transformational leadership: an investigation of heads of department leadership behaviours in Malaysian public universities     

Lokman Tahir  Tina Abdullah  Fadzli Ali  Khadijah Daud 《Educational studies》2014,40(5):473-495

Presently, the role and the function of universities in Malaysia have been described as being in a state of change. Several strategies have been adopted to assist in the re-branding of higher institutions of learning. As a consequence, an effective model of leadership practices, particularly at the Malaysian academic departmental level, has to be generated in order to replace the traditional leadership practices in meeting the national aspirations. The purpose of this study was to investigate the relationship between department heads’ leadership behaviour with academics’ organisational commitment. Survey responses from 430 academics from Malaysian public universities were received and analysed. The main finding of this study reveals that the adoption of encouraging leadership behaviour (Kouzes and Posner’s Transformational Leadership) shows a 55% direct positive relationship with academics’ organisational commitment, with demographical factors playing no role as a moderator with either variable. This reinforces the rationalisation for adopting the model within the Malaysian academic setting, where department heads should indeed lead the academic organisation.  相似文献   

Development of lanthanum strontium cobalt ferrite composite cathodes for intermediate- to low-temperature solid oxide fuel cells     

Nurul Akidah BAHARUDDIN  Hamimah Abd RAHMAN  Andanastuti MUCHTAR  Abu Bakar SULONG  Huda ABDULLAH 《浙江大学学报(A卷英文版)》2013,14(1):11-24

Solid oxide fuel cells(SOFCs) offer high energy conversion,low noise,low pollutant emission,and low processing cost.Despite many advantages,SOFCs face a major challenge in competing with other types of fuel cells because of their high operating temperature.The necessity to reduce the operational temperature of SOFCs has led to the development of research into the materials and fabrication technology of fuel cells.The use of composite cathodes significantly reduces the cathode polarization resistance and expands the triple phase boundary area available for oxygen reduction.Powder preparation and composite cathode fabrication also affect the overall performance of composite cathodes and fuel cells.Among many types of cathode materials,lanthanum-based materials such as lanthanum strontium cobalt ferrite(La1-xSrxCo1-yFeyO3- have recently been discovered to offer great compatibility with ceria-based electrolytes in performing as composite cathode materials for intermediate-to low-temperature SOFCs(IT-LTSOFCs).This paper reviews various ceria-based composite cathodes for IT-LTSOFCs and focuses on the aspects of progress and challenges in materials technology.  相似文献   

Measuring service quality in higher education: three instruments compared     

Firdaus Abdullah 《International Journal of Research & Method in Education》2013,36(1):71-89

Measuring the quality of service in higher education is increasingly important, particularly as fees introduce a more consumerist ethic amongst students. This paper aims to test and compare the relative efficacy of three measuring instruments of service quality (namely HEdPERF, SERVPERF and the moderating scale of HEdPERF‐SERVPERF) within a higher education setting. The objective was to determine which instrument had the superior measuring capability in terms of unidimensionality, reliability, validity and explained variance. Tests were conducted utilizing a sample of higher education students, and the findings indicated that HEdPERF scale resulted in more reliable estimations, greater criterion and construct validity, greater explained variance, and consequently was a better fit than the other two instruments. Consequently, a modified five‐factor structure of HEdPERF is put forward as the more superior scale for the higher education sector.  相似文献   

Multicultural early childhood education: practices and challenges in Malaysia     

Hooi San Phoon  Melissa Ng Lee Yen Abdullah  Anna Christina Abdullah 《The Australian Educational Researcher》2013,40(5):615-632

Multicultural early childhood education is necessary in a culturally diverse country like Malaysia. Preschool teachers play an important role in implementing multicultural education in the classroom. This paper reports the findings of a self-report questionnaire involving 854 preschool teachers in Malaysia. The preschool teachers disclosed their current multicultural education practices as well as the challenges they encountered when implementing multicultural education. While the majority of teachers claimed that they implemented multicultural education, a closer examination revealed that most of them used the tourist or contribution approach which focuses on only the outward manifestations of a culture when dealing with multicultural education. The transformation or anti-bias approach was used by only a small number of teachers. The teachers identified some challenges in multicultural education implementation, such as lack of instructional resources and the lack of stakeholder support. Thus, it is important to ensure teachers develop more critical understandings of multicultural education through teacher education training and programs. Other efforts to help teachers overcome challenges in implementing multicultural education include producing and developing more instructional materials and learning aids, which are suitable for young children and appropriate for the local context. Preschool teachers also need stakeholders to give more support and to acknowledge the importance of implementing multicultural early childhood education.  相似文献   

What publishers can take away from the latest early career researcher research          下载免费PDF全文

David Nicholas  Anthony Watkinson  Abdullah Abrizah  Cherifa Boukacem‐Zeghmouri  Jie Xu  Blanca Rodríguez‐Bravo  Marzena Świgoń  Eti Herman 《Learned Publishing》2018,31(3):249-253

Key points

• Early career researchers (ECRs) consider journals the central form of communication – but are concerned about pressure to publish.
• ECRs want to share but currently accept the closed publishing system because of the need to build a traditional reputation.
• ECRs know – and appear to care – little about publishers but trust them as publishing and reviewing facilitators.
• Editors are criticized for not managing peer review with better selection of reviewers.
• Megajournals are not seen as the future journal form and criticized for lack of selectivity.
• ECRs want open access/science in principle but are circumspect about their contribution to it.
• ResearchGate is a key force for change as ECRs consider it a mainstay communication and reputation platform.

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Not so different after all: Malaysian researchers' cross‐discipline view of quality and trustworthiness in citation practices          下载免费PDF全文

Abdullah Abrizah  David Nicholas  Abdullah Noorhidawati  M. K. Yanti Idaya Aspura  Fathiah Badawi 《Learned Publishing》2016,29(3):165-172

This paper reports a survey on citation behaviour of Malaysian researchers. It is part of a wider study gauging quality and trustworthiness in scholarly communication in the emerging digital environment. The survey questionnaire was distributed between 1 October 2014 and 31 January 2015. A total of 391 respondents, from four research areas (humanities, life sciences, physical sciences, and social sciences) completed the questionnaire. The finding indicated that motivations for citing were complex and multi‐faceted, but in all four disciplines, researchers cite a work because they regard it as an authoritative and trustworthy source, which provides a context or building block to their own research. Although researchers have moved from a print‐based system to a digital one, it has not significantly changed the way they decide what to trust. Peer reviewed journals are still the most influential. Open access journals will be cited if they have been peer reviewed. Citing on the basis of high altmetrics and other social judgements, such as mentions, likes, and use, was not prevalent. Measures of establishing trust and authority do not seem to have changed profoundly in Malaysia.  相似文献   

New dimensions: Gifted education in the 21st Century     

Abdullah M. Aljughaiman 《Learning and individual differences》2010,20(4):285-286

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Recent dissertation research in gifted studies     

Carol L. Tieso  Meredith J. Greene  Abdullah Ficici 《Roeper Review》2013,35(4)

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