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Kfar Saba, Israel

Balslev Y.J.,Tel Aviv University | Potchter O.,Tel Aviv University | Potchter O.,Beit Berl Academic College | Matzarakis A.,Albert Ludwigs University of Freiburg
Building and Environment

This paper examines how the first urban plan of Tel-Aviv (the Geddes Plan of 1925) [18] affected outdoor human thermal comfort in two periods: at the time of its implementation (1920-1930s) and in the present day (2010s). Additionally, this paper questions which of the two - shade or wind velocity - has greater influence on outdoor thermal sensation in the urban areas along the Israeli Mediterranean seashore. In order to examine the thermal sensation at street level during the 1920s and 1930s, a series of summer and winter climatological measurements were taken in the years 2010-2013 and compared to historical climatic data from the 1920s-1930s. The historical city structure was then reconstructed virtually and the climatological measurements for 2010-2013 were fed into the RayMan model to produce thermal comfort information (PET, Physiologically Equivalent Temperature). A main finding of the study is that in summer the duration of "hot" and "very hot" heat stress was double in eastwest oriented streets compared to north-south ones. Furthermore, in the winter, higher H/W ratios can increase cold thermal sensation in streets with the same orientation by up to 10 °C PET, due to shading. Finally, the results show that solar radiation has a greater effect on thermal sensation than wind velocity both in summer and winter seasons. Consequently, the Geddes Plan created improved thermal sensation in the main streets of Tel-Aviv, which are north-south oriented, and provided for greatly improved micro-climate conditions, in spite of the critique that Tel-Aviv "turned its back to the sea". © 2015 Elsevier Ltd. Source

Cohen P.,Tel Aviv University | Potchter O.,Tel Aviv University | Potchter O.,Beit Berl Academic College | Matzarakis A.,Albert Ludwigs University of Freiburg
Building and Environment

This study examines the daily and seasonal climatic behavior of various urban parks with different vegetation cover and its impact on human thermal sensation in the summer and winter in Tel Aviv, Israel. The study draws a comparison between the climatic conditions developed in various types of urban green open spaces, exposed open urban squares and street canyons near such sites.The results showed that an urban park with a dense canopy of trees has maximum cooling effect during summer and winter in daytime. In summer it reduces temperatures by up to 3.8°C and thermal comfort values by up to 18°C PET (Physiological Equivalent Temperature), while in winter it reduces temperatures by up to 2°C and thermal comfort by up to 10°C PET.The climatic variable that mostly affects human thermal comfort conditions is the Mean Radiant Temperature (T mrt) which is more dominant at exposed urban sites as compared to shady urban parks.These results emphasize the importance of treed open spaces as an effective tool for heat mitigation. The benefit of the cooling effect achieved by treed urban spaces is much stronger than the comparative disadvantage they create in winter. © 2011 Elsevier Ltd. Source

Shilo G.,Beit Berl Academic College | Shilo L.,Tel Aviv University
International journal of medical education

OBJECTIVE: The objective of the current study was to analyze written language of native Hebrew-speaking medical residents, as reflected in admission notes and discharge letters for patients admitted to medical wards in a 700-bed university hospital.METHODS: Twenty admission notes and 20 discharge letters written by 40 native Hebrew- speaking residents with at least one year experience were analyzed. The residents worked in the Internal medicine departments of a 700-bed university hospital. Admission notes and discharge letters were randomly chosen for the analysis which was carried out using predefined linguistic criteria and the extent to which English or Latin terms were incorporated into Hebrew medical language such as the structure of sentences and paragraphs. (Complete list of the linguistic criteria can be found in the methods and results sections).RESULTS: The most important findings were that the level of language was unexpectedly low. Many English or Latin medical terms were written using Hebrew letters. The creation of 'new' abbreviations was common. Sentences were telegraphic and lacked coherence, for example there were sentences written in internet language and short message service (SMS) messages. Texts were not organized and sometimes important details were missing.CONCLUSIONS: The writing style of medical residents should be improved substantially in order for them to be able to write coherently. One possible solution is to incorporate a course in writing into the medical school curriculum. Source

Klieger A.,Beit Berl Academic College | Ben-Hur Y.,Davidson Institute for Science Education
Journal of Science Education and Technology

The study examines the professional development of junior-high-school teachers participating in the Israeli "Katom" (Computer for Every Class, Student and Teacher) Program, begun in 2004. A three-circle support and training model was developed for teachers' professional development. The first circle applies to all teachers in the program; the second, to all teachers at individual schools; the third to teachers of specific disciplines. The study reveals and describes the attitudes of science teachers to the integration of laptop computers and to the accompanying professional development model. Semi-structured interviews were conducted with eight science teachers from the four schools participating in the program. The interviews were analyzed according to the internal relational framework taken from the information that arose from the interviews. Two factors influenced science teachers' professional development: (1) Introduction of laptops to the teachers and students. (2) The support and training system. Interview analysis shows that the disciplinary training is most relevant to teachers and they are very interested in belonging to the professional science teachers' community. They also prefer face-to-face meetings in their school. Among the difficulties they noted were the new learning environment, including control of student computers, computer integration in laboratory work and technical problems. Laptop computers contributed significantly to teachers' professional and personal development and to a shift from teacher-centered to student-centered teaching. One-to-One laptops also changed the schools' digital culture. The findings are important for designing concepts and models for professional development when introducing technological innovation into the educational system. © 2009 Springer Science+Business Media, LLC. Source

Tibi M.H.,Beit Berl Academic College
International Journal of Technology, Knowledge and Society

In order to perform a multi-aspect analysis of the progress and results of discussions, an instructor must obtain various information from asynchronous discussion forums. An instructor spends a lot of time and effort to perform this work. However, often this does not lead to desired results. A computer-mediated approach to provision of instructor with various information from asynchronous discussion forums is being suggested. This approach adapts information extraction from forums to information requirements of an instructor. The approach assumes sequential performance of the following major functions: presentation of instructor's information demand in a simplified format; building of forum's structure in accordance with information demand of the instructor; reduction of forum's structure by means of the most suitable algorithm; presentation of forum's extracts to the instructor. The approach is based on adaptation of forum structure to the changes in instructor's demands. It means that building of forum structure of a certain granularity level and the choice of a structure reduction algorithm are performed according to an information demand of the instructor. As a result, each extract corresponds to an instructor's information demand. Fragments of an extract can be taken out from one or several forums and can be presented on several granularity levels. The results of information extraction depend on changes in instructor information demands. The proposed approach is a constructive basis for development of an intelligent tool for adaptive extraction of information. © Common Ground, Oleg Tilchin, Moanes H. Tibi, All Rights Reserved. Source

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