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Ernst A. Hany 《High Ability Studies》1993,4(2):196-211
Previous investigations have shown that teachers have a clear idea of the typical characteristics of gifted pupils. The present study investigates whether these features are combined linearly or whether they are used to activate pupil exemplars or prototypes stored in the longterm memory, when teachers are set the task of distinguishing gifted from above average pupils. A group of 37 teachers at grammar schools in the German federal state of Baden‐Württemberg, who had all had adequate experience with gifted children, answered written questions. Their judgement behaviour was modelled with the help of discriminant analyses in which a number of different predictor sets were included. These analyses revealed that both individual features and prototypical patterns of features seem to be used simultaneously. In contrast, personal experience with individual highly gifted pupils seemed not to play any role, although the method used could be expected to conceal the effects of personal experience. 相似文献
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We introduce a new model for contact angle saturation phenomenon in electrowetting on dielectric systems. This new model attributes contact angle saturation to repulsion between trapped charges on the cap and base surfaces of the droplet in the vicinity of the three-phase contact line, which prevents these surfaces from converging during contact angle reduction. This repulsion-based saturation is similar to repulsion between charges accumulated on the surfaces of conducting droplets which causes the well known Coulombic fission and Taylor cone formation phenomena. In our model, both the droplet and dielectric coating were treated as lossy dielectric media (i.e., having finite electrical conductivities and permittivities) contrary to the more common assumption of a perfectly conducting droplet and perfectly insulating dielectric. We used theoretical analysis and numerical simulations to find actual charge distribution on droplet surface, calculate repulsion energy, and minimize energy of the total system as a function of droplet contact angle. Resulting saturation curves were in good agreement with previously reported experimental results. We used this proposed model to predict effect of changing liquid properties, such as electrical conductivity, and system parameters, such as thickness of the dielectric layer, on the saturation angle, which also matched experimental results. 相似文献
4.
Education and Information Technologies - Addressing psychological needs in computer-assisted language learning (CALL) has a critical role in developing learners’ motivation to use... 相似文献
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Shaykh Muhammad al‐casnazāni al‐Husseini Jamāl N. Hussein Shetha al‐Dargazelli Hamid M. An‐Ni'aymi Louay J. Fatoohi 《Al-Masaq: Islam & the Medieval Mediterranean》1994,7(1):227-266
This pilot study presents a lunar and Gregorian chronology of the Sira, that is the biography of the prophet Muhammad. The paper discusses the problems surrounding the chronology of very early Islamic history, namely, the pre‐Hijra era. This history is not covered by the Hijra calendar, and therefore, historians dated its events using other primitive dating systems, resulting in considerable difficulties and inaccuracies when comparing Gregorian dates of this early Islamic history. In order to overcome this problem and establish an accurate chronology of the early Islamic history, the introduction of a new lunar calendar (the Muhammadi calendar) which starts with the birth month and year of the prophet Muhammad, and covers all Islamic history including the pre‐Hijra era, is suggested. The Muhammadi calendar was used to study the earliest three versions of the Sira. All dated events of the Sira were compiled from these sources and presented, for the first time, according to their historical order. The Muhammadi dates of these events were then calculated. For the first time, a computer program was designed to convert the Muliammadi dates to their Christian equivalent. The program was then used to compute the Gregorian dates of the events of the Sira. 相似文献
6.
William L. Tarvin Abdulatif Hussein Faraj 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1990,36(1):89-101
This paper analyzes what developing South and Southeast Asian countries are doing in order to improve the qualifications of their teachers. The first section examines the perceived inadequacies in the pre-service and in-service teacher training programs in these countries. The second section discusses how these countries have confronted these inadequacies:-by expanding in-service teacher training programs,-by improving pre-service teacher training programs, and-by trying to make teaching a more self-fulfilling profession.In the conclusion, some projections are made about future directions these countries may take to improve further the quality of their teaching personnel.
Zusammenfassung In diesem Artikel wird analysiert, was süd- und südostasiatische Entwicklungsländer tun, um die Qualifikationen ihrer Lehrer zu verbessern. Im ersten Abschnitt werden erkannte Unzulänglichkeiten in den Lehrerausbildungs- und Lehrerfortbildungsprogrammen untersucht. Im zweiten Abschnitt wird diskutiert, wie diese Länder den Unzulänglichkeiten entgegengetreten sind:-durch Ausweitung der Lehrerfortbildungsprogramme,-durch Verbesserung der Lehrerausbildungsprogramme und-indem versucht wird, Lehren zu einem befriedigenden Beruf zu machen.Zum Schluß werden einige Wege vorgeschlagen, die diese Länder in Zukunft gehen könnten, um die weitere Qualität ihres Lehrpersonals zu verbessern.
Résumé Le présent article analyse les actions entreprises par des pays en développement de l'Asie du Sud et du Sudest afin d'améliorer les qualifications de leurs enseignants. La première partie examine les inadéquations relevées dans les programmes de formation initiale et en cours d'emploi des enseignants de ces pays. La deuxième partie analyse la manire dont ces pays ont fait face à ces carences:-en développant leurs programmes de formation des enseignants en exercice,-en améliorant les programmes de formation initiale des maîtres, et-en essayant de rendre la profession d'enseignant plus épanouissante.Pour conclure, quelques projections sont faites au sujet des futures directions que ces pays peuvent suivre pour améliorer davantage la qualité de leur personnel enseignant.相似文献
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Hussein Genemo Shah Jahan Miah Alasdair McAndrew 《Education and Information Technologies》2016,21(6):1769-1784
Assessment has been defined as an authentic method that plays an important role in evaluating students’ learning attitude in acquiring lifelong knowledge. Traditional methods of assessment including the Computer-Aided Assessment (CAA) for mathematics show limited ability to assess students’ full work unless multi-step questions are sub-divided into sub questions. This issue persisted significant drawback especially within the notion of method marking approach. To address this issue, the aim of the study is to develop a methodological framework that will create an information and communications technology (ICT) artefact prototype. The prototype (termed as method marking assessment (MMA) artefact) implements a method-marking assessment concept to assess through multi-step questions. Extensive literature reviews have revealed that there are features in common between complex-problem solution characteristics and multi-steps questions assessment using ICT; therefore complex problems paradigm is used in the study for developing the MMA prototype. 相似文献
8.
Morphological and biochemical responses of Oryza sativa L. (cultivar MR219) to ion beam irradiation 总被引:1,自引:0,他引:1
Anna Pick Kiong Ling Ying Chian Ung Sobri Hussein Abdul Rahim Harun Atsushi Tanaka Hase Yoshihiro 《Journal of Zhejiang University. Science. B》2013,14(12):1132-1143
Objective
Heavy ion beam, which has emerged as a new mutagen in the mutation breeding of crops and ornamental plants, is expected to result in the induction of novel mutations. This study investigates the morphological and biochemical responses of Oryza sativa toward different doses of carbon ion beam irradiation.Methods
In this study, the dry seeds of O. sativa were irradiated at 0, 20, 40, 60, 80, 100, and 120 Gy, followed by in-vitro germination under controlled conditions. Morphological and biochemical studies were conducted to investigate the morphological and physiological responses of O. sativa towards ion beam irradiation.Results
The study demonstrated that low doses (10 Gy) of ion beam have a stimulating effect on the height, root length, and fresh weight of the plantlets but not on the number of leaves. Meanwhile, doses higher than 10 Gy caused reductions in all the morphological parameters studied as compared to the control samples. The highest total soluble protein content [(2.11±0.47) mg/g FW] was observed in plantlets irradiated at 20 Gy. All irradiated plantlets were found to have 0.85% to 58.32% higher specific activity of peroxidase as compared to the control samples. The present study also revealed that low doses of ion beam (10 and 20 Gy) had negligible effect on the total chlorophyll content of O. sativa plantlets while 40 Gy had a stimulating effect on the chlorophyll content. Plantlets irradiated between 40 to 120 Gy were shown to be 0.38% to 9.98% higher in total soluble nitrogen content which, however, was not significantly different from the control samples.Conclusions
Carbon ion beam irradiation administered at low to moderate doses of 10 to 40 Gy may induce O. sativa mutants with superior characteristics. 相似文献9.
Psychiatric disorders especially depression are associated with a variety of changes in immunity parameters. In this work,
an attempt was carried out to make estimation about the correlation between immunity and depression through the measuring
of IgG, IgA, and IgM and complements (C3 and C4) levels in the serum of patients and comparing them with the corresponding
levels of healthy control group. The results showed a significant increase in serum level of C3, C4, cortisol, IgG and no
significant differences were noticed in the level of IgA and IgM in the depressed patients group as compared with control
group. A slight positive correlation was observed between cortisol versus IgG in depressed patients that is not found in normal
subjects. Thus in depression, human body defenses psychologically and sometimes this defense transformed into immunological
resistance that is expressed as different measurable changes in immunological parameters. 相似文献
10.
Lori Wong Vincent Beltran Chen Yang Shin Maekawa Sara Lardinois Hany Hussein 《文物保护研究》2018,63(5):307-315
ABSTRACTThe tomb of Tutankhamen in the Valley of the Kings, Egypt, one of the major attractions of the World Heritage Site of Ancient Thebes and its Necropolis on the West Bank of modern day Luxor, is today a destination for mass tourism. Visitors to the tomb increase relative humidity, elevate carbon dioxide levels, and encourage natural ventilation which facilitates entry of dust into the tomb. These conditions negatively impact the wall paintings and remaining artifacts in the tomb and create an uncomfortable environment for visitors. The deposition of dust inside the tomb collects on uneven wall painting surfaces, obscures their legibility and necessitates cycles of cleaning, which in turn leads to further damage. Developing environmental management strategies in the tomb to counter the effects of visitors and mitigate dust entry is an important component of the collaborative project between the Getty Conservation Institute (GCI) and Egypt’s Ministry of Antiquities (MoA) to conserve the tomb. These included implementation of a filtered-air supply and exhaust ventilation system to stabilize the interior microclimate and reduce dust in order to improve visitor comfort and contribute to the long-term preservation of the tomb. 相似文献