Studies of ultrasonic dehydration efficiency     

Vladimir N. KHMELEV  Andrey V. SHALUNOV  Roman V. BARSUKOV  Denis S. ABRAMENKO  Andrey N. LEBEDEV 《浙江大学学报(A卷英文版)》2011,12(4):247-254

The aim of this investigation was to define the effectiveness of non-contact drying using ultrasonic vibrations. Disk radiators were used for carrying out experiments, and a special drying chamber was designed to provide resonant amplification of ultrasonic vibrations (from 130 to 150 dB). Drying of ginseng and other vegetables demonstrated that the application of ultrasonic vibrations reduced power inputs by 20% in comparison with convective drying. It also led to a decrease of 6% in final moisture content, if the duration of drying was constant. The level of intensification of ultrasonic drying was high (up to 50 g for 1 kg of drying material), which helped to lower the temperature of the drying agent and improve the quality of the dried products.  相似文献   

On the making and taking of professionalism in the further education workplace   总被引：1，自引：1，他引：1  

Denis Gleeson  Jenifer Davies  Eunice Wheeler 《British Journal of Sociology of Education》2005,26(4):445-460

This paper examines the changing nature of professional practice in English further education. At a time when neo‐liberal reform has significantly impacted on this under‐researched and over‐market‐tested sector, little is known about who its practitioners are and how they construct meaning in their work. Sociological interest in the field has tended to focus on further education practitioners as either the subjects of market and managerial reform or as creative agents operating within the contradictions of audit and inspection cultures. In challenging such dualism, which is reflective of wider sociological thinking, the paper examines the ways in which agency and structure combine to produce a more transformative conception of the further education professional. The approach contrasts with a prevailing policy discourse that seeks to re‐professionalise and modernise further education practice without interrogating either the terms of its professionalism or the neo‐liberal practices in which it resides.  相似文献   

烟树(英文)     

Denis Johnson 《海外英语》2008,(7):51-51

《烟树》讲述的是中情局特工Skip Sands在越战中的故事——他的上级是他的叔叔,绰号为"上校"。"上校"花费多年心血,做了数千张索引卡片,试图将越共的各种人物、活动和事件汇编在一起,虽然小说以越战为背景,但战争的火药味并不浓重,作者始终着力刻画复杂的人物关系以及主角的内心和精神创伤。  相似文献   

Russian National Electronic Children's Library     

Marina Burykina  Denis Beznosov 《Journal of Web Librarianship》2016,10(4):375-381

ABSTRACT

The Russian State Children's Library (RGDB) is the largest children's library in the world and has been serving as a cultural and educational center for more than 45 years. Important aspects of RGDB's activities are the development of electronic resources and setting up the library site for distant users. The National Electronic Children's Library in Russia is a specialized digital collection of publications about children and for children. This article focuses on these aspects and the future steps of the project.  相似文献   

Book reviews     

W. D. Halls  Stewart Redman  Andreas Ziegenbein  T. V. Sathyamurthy  A. Harry Passow  C. H. Dobinson  Denis G. Osborne  Philip H. Phenix  G. W. Parkyn  Nicholas Hans  Victor Garcia Hoz y Rosales  Gerhard Pause  John Biggs  G. F. Peaker  R. P. Clark  Rolf Muuss  Peter W. Kahl  Franz Hilker 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1964,10(2):228-256

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THE MEDIUM IS NOT THE MESSAGE: IMPROVING AUSTRALIAN EDUCATIONAL AID TO PAPUA NEW GUINEA STUDENTS     

Denis McLaughlin 《高等教育研究与发展》1996,15(1):97-113

Australia, like many developed countries expends a proportion of its budget in assisting lesser developed countries (LDC) in educational enterprises. Such efforts may have muted results if Australian educators assume that overseas students eventually adapt to their teaching. This paper argues that institutions which accept overseas students into their courses are obliged professionally to cater for students’ learning problems particularly, if the language of instruction is not the mother tongue. Often these problems have their genesis in the LDC because students are educated in a language in which their teachers’ themselves lack facility. Moreover, in the Papua New Guinea context the learning problems with English are associated with a lack of equivalence between the concepts in the academic discourse and the students’ existing conceptual framework. Learning problems in English are more about concept acquisition than translation.  相似文献   

Gavriel Salomon: In Memoriam     

David?Berliner  Denis?Phillips  Moshe?Zeidner  Erik?de?Corte  Rich?Shavelson  Maria?de?Ibarrola  Richard?ClarkEmail author 《Educational Psychology Review》2016,28(2):207-213

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Demand-led e-learning and the elusive total solution     

Denis Wong  Steve Clarke  Nigel Lodge  Kerry Shephard 《British journal of educational technology : journal of the Council for Educational Technology》2007,38(1):116-132

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A causality analysis of the link between higher education and economic development     

Jean-Luc de Meulemeester  Denis Rochat 《Economics of Education Review》1995,14(4)

The aim of this article is to shed light on the relationship between higher education and economic development by means of econometric tools designed to evaluate the existence and direction of causality: cointegration and Granger-causality tests. The results show a significant causality from national higher educational effort (proxied by the number of students per capita, i.e. not engaged in productive activities) to economic development for four countries: Sweden (1910–1986), United Kingdom (1919–1987), Japan (1885–1975) and France (1899–1986). However, such a causality link has not been found for Italy (1885–1986) or Australia (1906–1986). This suggests that this relationship is indeed not mechanistic as already pointed out by some social scientists.  相似文献   

High school laboratory work in Western Australia: Openness to inquiry     

Helen Staer  Denis Goodrum  Dr Mark Hackling 《Research in Science Education》1998,28(2):219-228

Laboratory work has always been the most distinctive feature of secondary science teaching and learning. With the increasing emphasis on student centred learning and the importance of developing investigation and problem-solving skills there is value in reflecting on the type of laboratory work that is carried out in the science curriculum. The purpose of this study was to determine the nature of the laboratory work undertaken by lower secondary science students, and in particular, to determine the openness to inquiry of these activities. The study also examined the factors that influence teachers in determining the type of student investigations that occur in the science laboratory. Data from a survey of Perth lower secondary science teachers reveal low levels of inquiry and interesting insights into teacher's perceptions about the benefits of open inquiry for students and the difficulities for teachers. The difficulties identified by teachers represent barriers to change that must be addressed if more open inquiry laboratory work is to be implemented in schools.  相似文献