排序方式： 共有17条查询结果，搜索用时 15 毫秒
1.
2.
3.
4.
Muhammad Jaber Hossain 《图书馆管理杂志》2013,53(6):462-482
ABSTRACTThis article investigates students’ perceptions and expectations of service quality to understand the causes of dissatisfaction with the services delivered by the university libraries in Bangladesh. A total of 623 usable responses were collected from ten public and private university libraries in the country. The survey data were collected using a modified five dimensional SERVQUAL-based questionnaire, consisting of 26 service items. To determine the level of user satisfaction/dissatisfaction with the service items, the study used the disconfirmation theory with slight modification. It was found that users’ unrealistically high expectation for quality services is one of the key sources of their dissatisfaction. The other causes of dissatisfaction include lack of user-employee relationships, lack of attention to users’ needs, an external communication gap between library and users, lack of attention to enhance staffs’ performance, etc. Based on the service deficiencies identified, the study offers some measures that could be used as a way to improve service quality, and thereby user satisfaction. 相似文献
5.
Following ingestion of either water (Experiment 1) or saccharin (Experiment 2), experimental groups of rats were poisoned with lithium chloride and acquired an aversion to the ingested fluid. This aversion gradually extinguished and, in both experiments, was not reacquired when fluid intake was again followed by poisoning. These results are in marked contrast to usual findings of very rapid relearning following extinction with conditioning preparations other than taste-aversion learning. 相似文献
6.
Usama Umer Jaber Abu Qudeiri Mohammad Ashfaq Abdulrahman AL-Ahmari 《浙江大学学报(A卷英文版)》2016,17(11):873-885
Chip morphology predictions in metal cutting have always been challenging because of the complexity of the various multiphysical phenomena that occur across the tool-chip interface. An accurate prediction of chip morphology is a key factor in the assessment of a particular machining operation with regard to both tool performance and workpiece quality. Although finite element (FE) models are being developed over the last two decades, their capabilities in modeling correct material flow around the tool tip with shear localization are very limited. FE models with an arbitrary Lagrangian Eulerian (ALE) approach are able to simulate correct material flow around the tool tip. However, these models are unable to predict any shear localization based on material flow criteria. On the other hand, FE models with a Lagrangian formulation can simulate shear localization in the chip segments; they need to make use of a mesh-based chip separation criterion that significantly affects material flow around the tool tip. In this study a mesh-free method viz. smoothed particles hydrodynamics (SPH) is implemented to simulate shear localization in the chip while machining hardened steel. Unlike other SPH models developed by some researchers, this model is based on a renormalized formulation that can consider frictional stresses along the tool-chip interface giving a realistic chip shape and material flow. SPH models with different cutting parameters are compared with the traditional FE models and it has been found that the SPH models are good for predicting shear localized chips and do not need any geometric or mesh-based chip separation criteria. 相似文献
7.
The purpose of this research is threefold: (1) to identify the difficulties that Grade 10 students in a Lebanese school have that hinder their conceptual understanding at the micro–macro–symbolic interface in chemistry, (2) to investigate the effect of a macro–micro–symbolic teaching approach on students’ relational understanding of chemical reactions, and (3) to characterize students’ conceptual profiles regarding their understanding of chemical reactions in terms of macro, micro, symbolic levels and the relations among them, at the end of the teaching sequence. Forty six 10th graders from two sections participated in the study. A student-centered approach was followed in both sections based on constructivist pedagogy. Hence the teacher played the role of a facilitator who guided students in a meaning making inductive learning process, through questioning, monitoring, validating, and clarifying ideas. Instruction in the experimental group was characterized by macro–micro–symbolic teaching that focuses on the interplay between the levels, integrates various representations, and engages students in an epistemic discourse about the nature of knowing in chemistry. Data sources for the study included a pre-test and two post-intervention tasks: a post-test and a concept map task, in addition to interviews with selected students from both sections. Findings indicated that macro–micro–symbolic teaching enhanced students’ conceptual understanding and relational learning of chemical reactions. Besides, four assertions related to students’ conceptual and epistemological thinking in response to the different teaching approaches are presented. Implications for instruction and for teacher education programs, as well as recommendations for further research, are discussed in light of these findings. 相似文献
8.
Science & Education - Current visions of science education advocate that students should engage with science in the classroom in ways that mirror the work of scientists in order to develop... 相似文献
9.
This article summarizes a social mapping project conducted by the Environmental Education, Communication and Arts Research Group from the Federal University of Mato Grosso. The primary goals of the project were to map the vulnerable social groups of Mato Grosso, and identify the social and environmental conflicts that put them in situations of risk. The conflicts and dilemmas these groups experience are typically caused by land and water disputes. In turn, the disputes can be traced to the continuance of colonialist forms of political, economic and ecological relations implicit in the prevailing model of development in the region. Supported by the reinvention and application of a new methodology for environmental education, namely the social map, the work illustrates the significance of group identities, self-narratives and interpretive frames, and discusses how social mapping might be used in land education to enable the construction of participatory forms of public policy. 相似文献
10.
Muhammad Jaber Hossain 《图书馆管理杂志》2013,53(2-3):122-146
ABSTRACT To design an outline of a user-focused marketing model and its implication in academic libraries is the goal of this article. The determinants for the proposed model were primarily derived from the success factors of customer-focused marketing noted in earlier research, and views and insights from a number of allied constituencies in Bangladesh. Doing this job, the study used exploratory investigation in the form of executive interview, focus group discussion, and questionnaire survey. To examine reliability of the determinants “item-total correlation” was applied. The proposed model shows quality service has been seen as a direct result of the quality of library products, services, and service providers that leads to ensure user satisfaction and loyalty. It also demonstrates how users are the central theme from all functional perspectives of library services. The model emphasizes the quality improvement and operational efficiencies are to be working together to achieve a competitive advantage. The model may help librarians understand how to set the users as the central theme from all functional perspectives of the library services. 相似文献