International trends in health science librarianship part 12: South Asia (India,Pakistan and Sri Lanka)     

Medha Joshi  Mumtaz Ali Anwar  Midrar Ullah  Chandrani Kuruppu 《Health information and libraries journal》2014,31(4):318-324

This is the 12th in a series of articles exploring international trends in health science librarianship. This issue describes developments in health science librarianship in the first decade of the 21st century in South Asia. The three contributors report on challenges facing health science librarians in India, Pakistan and Sri Lanka. There is consensus as to the need for education, training and professional development. Starting in the next issue, the focus will turn to Africa, starting with countries in southern Africa. JM  相似文献   

ASSESSING CHEMISTRY-LEARNING COMPETENCIES OF STUDENTS IN ISOLATED RURAL SENIOR HIGH SCHOOLS BY USING THE NATIONAL EXAMINATION: A CASE STUDY OF SIMEULUE ISLAND,INDONESIA     

M- Adlim  Soewarno S  Hasbi Ali  Armia Ibrahim  Hasmunir Umar  Khairil Ismail  Usman A. Gani  Ishak Hasan  Burhanuddin Yasin 《International Journal of Science and Mathematics Education》2014,12(4):817-839

This study explored learning competency based on the Indonesian National Examination focusing especially on chemistry performance and the circumstances of senior high school students and teachers in rural areas of Simeulue Island, Indonesia. The National Examination total score and chemistry score for students in rural areas were consistently lower than students in urban areas during 2008–2010. The majority of rural students were failing to master key chemistry concepts. Their low performance on laboratory-based questions appeared to indicate that the associated practical work was not done as part of the chemistry courses. Some chemistry topics were not taught due to insufficient time, student weaknesses, insufficient textbooks, and other reasons. The issues of low competency of teachers, poverty for the majority of students, low enrollment in schools, and low competition among students in these rural senior high schools appeared to be common problems across rural settings. The local government has recommended providing a consolidated rural high school with qualified chemistry teachers, laboratories, and transportation to address factors negatively influencing student achievement. Furthermore, local rural school officials need to recruit and retain qualified teachers in these isolated areas, provide effective textbooks and instructional resources, and facilitate the professional development of chemistry teachers.  相似文献   

A qualitative inquiry of doctoral students' herding in education and validation of ‘herding in educational decisions’ scale     

Muhammad Ali Asadullah  Sumaira Mirza  Muhammad Zia Ul Haq  Tahir Yaqoob  Sajid Hussain 《Higher Education Quarterly》2023,77(1):102-120

Fresh PhD recipients are experiencing restricted career opportunities yet the enrolment of PhD Scholars is increasing rapidly. Perhaps, doctoral students lack conscious educational decision-making. Building on such a perspective of doctoral students' unconscious educational choices, we explored their educational choices throughout their life trajectory. We started with a qualitative inquiry of 18 different PhD scholars in Pakistan. The findings helped us in developing a measure to determine the extent of herding in doctoral students' educational decisions. We ‘benefitted from’ this opportunity and validated the scale in two separate quantitative inquiries for conducting an exploratory factor analysis and confirmatory factor analysis. The study concluded a 3-dimensional scale (consisting of 15-items) for measuring ‘herding in educational decisions’. The study offers certain implications for conscious educational decisions.  相似文献   

H_∞ optimization-based decentralized control of linear interconnected systems with nonlinear interconnections     

Ali Sghaïer Tlili  Naceur Benhadj Braiek 《Journal of The Franklin Institute》2014

The focus of this paper is on the design of a _H∞$H_{\infty }$ decentralized observation and control approach for a class of nonlinear disturbed interconnected systems. The proposed scheme is formulated as an optimization problem in terms of linear matrix inequality (LMI) to compute the robust observation and control gain matrices simultaneously, to maximize the bounds on the nonlinearity which the system can tolerate without going unstable, to improve the performance of the proposed control strategy by minimizing the _H∞$H_{\infty }$ criterion and to ensure the stability of the closed loop system in the Lyapunov framework despite the exogenous disturbances applied to the subsystems. A simulation is provided on a 3-machine power system, which generators are strongly nonlinear interconnected, to show the efficiency of the designed approach.  相似文献   

Synthesis of Gold Nanoparticles Coated with Aspartic Acid and Their Conjugation with FVIII Protein and FVIII Antibody     

Maryam Farahnak Zarabi  Ali Farhangi  Samaneh Khademi Mazdeh  Zahra Ansarian  Davod Zare  Mohammad Reza Mehrabi  Azim Akbarzadeh 《Indian journal of clinical biochemistry : IJCB》2014,29(2):154-160

Carboxylate-modified gold nanoparticles (GNPs) were synthesized in a simple one-step process based on the reduction of tetrachloroauric acid by aspartic acid in water. GNPs were identified by UV–Vis spectroscopy, dynamic light scattering (DLS) and transmission electron microscopy. Conjugation of protein molecules with functionalized nanoparticles was performed through electrostatic interaction. The GNP–protein conjugates were characterized by gel electrophoresis. The interaction between functionalized GNPs and protein molecules lead to conformational transition of protein structure after conjugation of protein with GNPs. This process was investigated by fluorescence spectroscopy and circular dichroism spectroscopy.  相似文献   

Immunoisolated Transplantation of Purified Langerhans Islet Cells in Testis Cortex of Male Rats for Treatment of Streptozotocin Induced Diabetes Mellitus     

Ali Farhangi  Dariush Norouzian  Mohammad Reza Mehrabi  Mohsen Chiani  Zahra Saffari  Maryam Farahnak  Azim Akbarzadeh 《Indian journal of clinical biochemistry : IJCB》2014,29(4):406-417

The objective of this study is to induce experimental diabetes mellitus by streptozotocin in normal adult Wistar rats via comparison of changes in body weight, consumption of food, volume of water, urine and levels of glucose, insulin and C-peptide in serum, between normal and diabetic rats. Intra-venous injection of 60 mg/kg dose of streptozotocin in 250–300 g (75–90 days) adult Wistar rats makes pancreas swell and causes degeneration in Langerhans islet β-cells and induces experimental diabetes mellitus in 2–4 days. For a microscopic study of degeneration of Langerhans islet β-cells of diabetic rats, biopsy from pancreas tissue of diabetic and normal rats, staining and comparison between them, were done. In this process, after collagenase digestion of pancreas, islets were isolated, dissociated and identified by dithizone method and then with enzymatic procedure by DNase and trypsin, the islet cells changed into single cells and β-cells were identified by immune fluorescence method and then assayed by flow-cytometer. Donor tissue in each step of work was prepared from 38 adult male Wistar rats weighted 250–300 g (75–90 days). Transplantation was performed in rats after 2–4 weeks of diabetes induction. In this study, the levels of insulin, C-peptide and glucose in diabetic rats reached to normal range as compared to un-diabetic rats in 20 days after transplantation of islet cells. Transplantation was performed under the cortex of testis as immunoisolated place for islet cells transplantation.  相似文献   

Knowledge workers’ perceptions of potential benefits and challenges of inter-organizational knowledge sharing systems: a Delphi study in the health sector     

Kamla Ali?Al-BusaidiEmail author 《知识管理研究与实践》2014,12(4):398-408

Inter-organizational knowledge sharing systems (IOKSS) can serve as strategic systems for knowledge-based sectors. Most prior research on inter-organizational systems (IOSs) focuses on organizations’ adoption of such systems; they reveal little about knowledge workers’ adoption of IOS, especially in horizontally linked firms. Knowledge workers’ perception is critical to the deployment of IOKSS at all stages. On the basis of a Delphi technique in the health sector, this study demonstrates that IOKSS can benefit individuals, customers, organizations, the sector, and the knowledge sharing process, and that the challenges of IOKSS arise from individuals, peers, IOKSS, organizations, and the sector.  相似文献   

A microfluidic-based neurotoxin concentration gradient for the generation of an in vitro model of Parkinson's disease     

Seidi A  Kaji H  Annabi N  Ostrovidov S  Ramalingam M  Khademhosseini A 《Biomicrofluidics》2011,5(2):22214

In this study, we developed a miniaturized microfluidic-based high-throughput cell toxicity assay to create an in vitro model of Parkinson's disease (PD). In particular, we generated concentration gradients of 6-hydroxydopamine (6-OHDA) to trigger a process of neuronal apoptosis in pheochromocytoma PC12 neuronal cell line. PC12 cells were cultured in a microfluidic channel, and a concentration gradient of 6-OHDA was generated in the channel by using a back and forth movement of the fluid flow. Cellular apoptosis was then analyzed along the channel. The results indicate that at low concentrations of 6-OHDA along the gradient (i.e., approximately less than 260 μM), the neuronal death in the channel was mainly induced by apoptosis, while at higher concentrations, 6-OHDA induced neuronal death mainly through necrosis. Thus, this concentration appears to be useful for creating an in vitro model of PD by inducing the highest level of apoptosis in PC12 cells. As microfluidic systems are advantageous in a range of properties such as throughput and lower use of reagents, they may provide a useful approach for generating in vitro models of disease for drug discovery applications.  相似文献   

Kenyan Children's Ideas about Parks and Wildlife     

Ibrahim Ali 《Environmental Education Research》2002,8(4):439-462

This study is about Kenyan pupils' ideas of parks and wildlife. Despite their importance in Kenya, parks and wildlife do not seem to have contributed much in terms of teaching and learning of ecology at school. The findings show a lack of scientific explanation and understanding of issues of wildlife and parks. However, some pupils understand parks and wildlife in terms of their social implications such as socioeconomic benefits, tourism and the resolution of the human-wildlife conflict. The pupils note the potential of parks and wildlife to contribute to the alleviation of poverty and the creation of a more equitable society. They also note the importance of participation in determining park and wildlife ownership in Kenya.  相似文献   

The impact of transnational corporations on educational and cultural processes: An African perspective     

Ali A. Mazrui 《Prospects》1976,6(4):541-557

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