Student attrition and academic and social integration: Application of Tinto’s model at the University of Papua New Guinea   总被引：1，自引：0，他引：1  

Md. Abdul Mannan 《Higher Education》2007,53(2):147-165

This study explores the compensatory relationship between academic and social integration, and also assesses the differences of group specific academic and social integration in a small university in the Pacific as perceived by the students. In order to reduce attrition through developing a relevant retention policy, a comprehensive group specific assessment of academic and social integration was necessary. Using the Tinto model and research instruments, an institutional academic and social integration assessment instrument was developed for measuring perceived integration climate for specific subject and year of studies groups. An important outcome of this study was the existence of a compensatory relationship between academic and social integration. Differences were found between perceived ratings of student groups for both academic and social integration.  相似文献   

Medieval Islamic Medicine     

Abdul Nasser Kaadan 《Al-Masaq: Islam & the Medieval Mediterranean》2011,23(2):147-149

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Neural network and principal component regression in non-destructive soluble solids content assessment: a comparison     

Kim-seng Chia  Herlina Abdul Rahim  Ruzairi Abdul Rahim 《Journal of Zhejiang University. Science. B》2012,13(2):145-151

Visible and near infrared spectroscopy is a non-destructive, green, and rapid technology that can be utilized to estimate the components of interest without conditioning it, as compared with classical analytical methods. The objective of this paper is to compare the performance of artificial neural network (ANN) (a nonlinear model) and principal component regression (PCR) (a linear model) based on visible and shortwave near infrared (VIS-SWNIR) (400–1000 nm) spectra in the non-destructive soluble solids content measurement of an apple. First, we used multiplicative scattering correction to pre-process the spectral data. Second, PCR was applied to estimate the optimal number of input variables. Third, the input variables with an optimal amount were used as the inputs of both multiple linear regression and ANN models. The initial weights and the number of hidden neurons were adjusted to optimize the performance of ANN. Findings suggest that the predictive performance of ANN with two hidden neurons outperforms that of PCR.  相似文献   

Tribological evaluation of refined, bleached and deodorized palm stearin using four-ball tribotester with different normal loads     

Chiong Ing Tiong  Yahya Azli  Mohammed Rafiq Abdul Kadir  Samion Syahrullail 《浙江大学学报(A卷英文版)》2012,13(8):633-640

The effects of the mechanical factors with applied loads on the tribological performance of refined, bleached and deodorised (RBD) palm stearin (PS) were studied using a four-ball tribotester. All the RBD PS results were simultaneously compared with the additive-free paraffinic mineral oil (PMO). The experiments were carried out using different loads with a constant speed in order to gain a better understanding of the mechanical processes that occurred during the experiment. For each experiment, the temperature was increased to 75 °C and was run for 1 h. In a mechanical system, lubricant plays an important role in reducing wear and friction. PS exists as a semi-solid at room temperature after the fractionation process from oil palm. Due to the increasing rate of pollution to the environment, vegetable oil was chosen as the test lubricant with regard to its biodegradability. Other advantages of vegetable oil are that it is more easily harvestable and non-toxic compared to petroleum-based oil, which made it a suitable candidate. From the experiment, RBD PS is found to have a better friction constraint reduction compared with additive-free PMO.  相似文献   

Electronic resources and services in Pakistani university libraries: A survey of users' satisfaction     

Muhammad Sajid Mirza  Khalid Mahmood 《International Information and Library Review》2012,44(3):123-131

This study is an attempt to evaluate the effectiveness of electronic resources and services in Pakistani university libraries on the basis of users' satisfaction. A survey method was employed to conduct the research. Using convenience sampling, eight university libraries; four each from Islamabad and Lahore including two from the public sector and two from the private sector having IT applications, were included in the users survey. The total population (i.e., 40,236) of library users was very large; therefore, a reasonable, manageable and convenient sample of 800 library users, including 100 users each from the eight libraries was selected. A semi structured questionnaire was designed to collect data, while a five-point Likert Scale from 1 (Dissatisfied) to 5 (Extremely satisfied) was used to measure the satisfaction level of the respondent. The study concluded that Pakistani university libraries are offering effective electronic resources and services to their users.  相似文献   

Off-Campus Postgraduate Students’ Perceptions About Distance Library Support Services: A Case Study of Allama Iqbal Open University Libraries Network     

Muhammad Arif  Khalid Mahmood 《图书馆管理杂志》2013,53(3-4):249-263

ABSTRACT

The present study was conducted to assess distance learning students’ perceptions about location and physical set up of libraries, collections, resources, and services rendered at thirty-four regional campuses as well as main campus libraries network of Allama Iqbal Open University (AIOU) all over Pakistan. During the spring semester of 2007, a questionnaire was mailed to 250 randomly selected students enrolled in eleven postgraduate programs throughout the country. The response rate was 61.2%, which was made up of 43.1% females and 56.9% males. A majority of the respondents were dissatisfied with the virtual reference services, online database facilities, interlibrary loan, library membership, and borrowing of library material from the AIOU libraries. They were satisfied with the location and physical setup of the libraries, the collections, and the resources of the libraries. The study revealed that most of the respondents used the libraries during workshops as well as for research purposes. The statistical analysis (t = 0.550, Sig. = 0.970) showed that there was no significant difference between the opinion of females and males. The data were analyzed using Statistical Package for Social Sciences (SPSS) for Windows version 10.0.  相似文献   

Upper Secondary Bruneian Science Students’ Perceptions of Assessment     

Harkirat S. Dhindsa  Khalid Omar  Bruce Waldrip 《International Journal of Science Education》2013,35(10):1261-1280

The aims of this study were to evaluate reliability and validity of the Students’ Perception of Assessment Questionnaire (SPAQ), to evaluate students’ perception on assessment, and to evaluate gender‐based, grade‐based, and ethnicity‐based differences in students’ perceptions. The validity and reliability coefficients revealed that the SPAQ was suitable for assessing students’ perceptions on five assessment dimensions. The average scale‐item mean values for all the scales were less than 3.0, which indicates a need to address these dimensions of assessment at classroom level. The mean value for Student Consultation scale was 1.96 out of 4, indicating a need for special attention in this area. The perceptions of students grouped on the basis of gender and of grade level groups were comparable, but on the basis of ethnic groups were statistically significantly different. Assuming these differences to be real, does it mean that teaching approaches will need to be addressed? Future research in this area is warranted.  相似文献   

Non-occupational lead exposure and hypertension in Pakistani adults     

Rahman S  Khalid N  Zaidi JH  Ahmad S  Iqbal MZ 《Journal of Zhejiang University. Science. B》2006,7(9):732-737

INTRODUCTION Blood-Pb levels are taken as representative of dose/exposure, as all clinical symptoms resulting from the toxic effects of Pb are manifested mainly in blood. Lead exposure of children correlates with de- creased IQ, symptoms of hyper kinesis or minima brain dysfunction, poor learning, or defects in specific neuromotor tasks (Landgrin et al., 1980). Large number of observations over the years has associated lead exposure with human diseases (McMichael and Johnson, 1982). Ca…  相似文献   

Somatic embryogenesis in wild relatives of cotton （Gossypium Spp.）   总被引：2，自引：0，他引：2  

Rao AQ  Hussain SS  Shahzad MS  Bokhari SY  Raza MH  Rakha A  Majeed A  Shahid AA  Saleem Z  Husnain T  Riazuddin S 《Journal of Zhejiang University. Science. B》2006,7(4):291-298

Wild cotton species can contribute a valuable gene pool for agronomically desirable cultivated tetraploid cultivars. In order to exploit diploid cotton a regeneration system is required to achieve transformation based goals. The present studies aimed at optimizing the conditions for regeneration of local varieties as well as wild species of cotton. Different callus induction media were tested with varying concentrations of hormones in which sucrose was used as nutritional source. Different explants （hypocotyls, cotyledon, root） were used to check the regeneration of both local cotton plants and wild relatives using T ＆ G medium, BAP medium, CIM medium, EMMS medium, and cell suspension medium. Different stages of embryogenicity such as early torpedo stage, late torpedo stage, heart stage, globular stage and cotyledonary stage were observed in wild relatives of cotton. The results of this study pave the way for establishing future transformation methods.  相似文献   

Teachers＇ perception on the relationship between parents and school     

Ahmad Esa A bdul Rasid Abdul Razzaq Zurina Yasak Zainon Omar 《美中教育评论》2010,7(5):47-54

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