Cooling Tests of the NectarCAM camera for the Cherenkov Telescope Array

The NectarCAM is a camera proposed for the medium-sized telescopes in the framework of the Cherenkov Telescope Array (CTA), the next-generation observatory for very-high-energy gamma-ray astronomy. The cameras are designed to operate in an open environment and their mechanics must provide protection for all their components under the conditions defined for the CTA observatory. In order to operate in a stable environment and ensure the best physics performance, each NectarCAM will be enclosed in a slightly overpressurized, nearly air-tight, camera body, to prevent dust and water from entering. The total power dissipation will be ~7.7 kW for a 1855-pixel camera. The largest fraction is dissipated by the readout electronics in the modules. We present the design and implementation of the cooling system together with the test bench results obtained on the NectarCAM thermal demonstrator.Comment: In Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands. All CTA contributions at arXiv:1508.0589

Драматичні елементи у фольклорі – традиція та актуальність

The researches of the folklore and ethnographic sources underscore, that the dramatic elements exist in the folk art (songs, fairy tales, small folklore genres, children folklore etc.), in customs and in the other forms of the life of the folk. But it's importaint what I mean by the notion "dramatic elements in the folklore". Namely, existence of the action, plot, culmination and denouement, then the place and time of the development of the action, monologue, dialogue in the action, characters, masks, dresses, text, scenography, scenario, director, audience, puppet-show, i. e. the presence of the performance. In this paper special attention is given to some dramatic acting with multitude of the dramatic elements, which are connected with large quantity of the Cristmas holidays. We also drew parallels between traditional forms and new elements of celebration and results of the actualization of some innovations in society. It is worth to refer the carnivals in Vechani and Strumitsa and also celebrations of the Eve in Skopje

Pre-service teachers' preparedness for classroom teaching: An investigation of teacher education program transferability and connection to ESL Classroom / Abang Fhaeizdhyall Abang Madaud

The major purpose of this study is to investigate to what extent do pre-service teachers apply the methods, theory, and training received during years of training in the teacher training program into their classroom teaching. Additionally, this study also examines the perceptions of pre-service teachers’ supervisors of their supervisees’ preparedness to enter the real world of teaching by analyzing their teaching ability in terms of content, pedagogical and grammar knowledge. Five interrelated research questions were formulated to guide the study; (1) What are the specific aspects of the teacher education program that helped the pre-service teachers during their teaching practicum?; (2) What are the difficulties and challenges faced by the pre-service teachers in the program and how to overcome them?; (3) How prepared are the pre-service teachers to teach English?; (4) To what extent are the strengths and weaknesses of the pre-service teachers as perceived by the university supervisors?; (5) What are the suggestions and recommendations by the trainees to better improve the current teacher education program? The sample involved in the study were pre-service teachers from the Bachelor in Education TESL program who had just completed their 3-month teaching practicum and are currently in the final semester. In addition, the university supervisors were also selected to be included as the participants of the study to answer research question number four. This study employed a qualitative research design and the data sources included pre-service teacher questionnaires and interviews, document analysis, and university supervisor interviews. The questionnaire distribution phase was conducted with 68 pre-service teachers who came for a one-day post mortem of their teaching practicum. Subsequently, interview sessions were conducted with 7 of the respondents afterwards. To gain better insight of the issues in teacher preparation program, interview with 5 university supervisors were also conducted. The findings of this study revealed significant courses such as ethodology courses and classroom management, theories in language learning, drama project, and microteaching experience as the important aspects that contributed to the trainees’ preparedness to teach. Additionally, the trainees also stated the challenges they faced in the program are in terms of dealing with the school students, their self-belief, the role of the supervisors and school related issues. Overall perceived preparedness to teach shows that the pre-service teachers perceived themselves as moderately prepared to teach which was similar to their supervisors’ perceptions. This study also revealed some strengths and weaknesses of the trainees in terms of grammatical knowledge, content knowledge and effectiveness in teaching, in which the supervisors have also provided some suggestions to address them. To conclude, the trainees offer some suggestions for improvement of the current teacher education program in terms of developing trainees’ teaching experience, courses amendment, authentic school experience, and removal of some less significant courses

USA and RXTE Observations of a Variable Low-Frequency QPO in XTE J1118+480

The USA experiment on ARGOS and RXTE have exensively observed the X-ray transient XTE J1118+480 during its recent outburst in 2000 April--June. We present detailed monitoring of the evolution of a low frequency QPO which drifts from 0.07 Hz to 0.15 Hz during the outburst. We examine possible correlations of the QPO frequency with the flux and spectral characteristics of the source, and compare this QPO to low frequency QPOs observed in other black hole candidates.Comment: Accepted by ApJ Letters, reference added, minor revisions, 6 page