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Abstract. This chapter deals with some fundamental aspects of the minting technique in Castile-Leon in the Middle Age identified in latest years. In short, it is analyzed the material used by the die-makers and the transformation of the dies to control the proper functioning of the mint. Both aspects have relation with other contemporary techniques as the use of marks by masons and the creation of the types in the firsts prints.
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Introduction. Given the clear priorities underlying physical education of student youth, it is mandatory for them to mastering the system of applied skills. At the same time, the objectification of the orientation of content of the swimming instruction system for students of free higher education institution should be carried out taking into account the opinions of the subjects of this process, namely students. Aim is to determine the subjective opinion of students different faculties of Kherson State University on the organizational features of swimming classes. Material and methods. There were involved in the survey (during September-October 2020) applicants of higher education of the first (bachelor's) and second (master's) degrees of Kherson State University. In total, there were 1513 respondents, including 646 of first-year students, 458 of second-year students, 164 of third-year students, 213 of fourth-year students, and only 32 of 5-6-year students. There were used th...
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The purpose of this paper is the study by simulation of a fault tolerant control with Pulse Width Modulation (PWM) AC-DC-AC converter supplying a three-phase rotor field oriented induction motor. The back to back converter, is supplied with three-phase network and composed of a PWM rectifier and a voltage source inverter. Fault tolerant topology of AC-DC-AC converter that without redundancy have been studied and associated with affective and fast method of fault detection and compensation to guarantee the continuity of service, in the presence of a possible open circuit failure on the level of one of their legs. Although of the presence of open circuit on the level of one of the converter legs the control based on the Zero Sequence Signal (ZSS) assure the service continuity, the simulation results obtained prove that it is possible to maintain the good performance of the drive without redundancy leg (6/5 topology).
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Medical journal of the Islamic Republic of Iran, 2014
Various studies have shown that stroke morbidity and mortality could be decreased if patients receive early diagnosis and treatment. Iranian Pre-hospital Stroke Scale (IPSS) is designed based on other prehospital stroke scales available across the world as well as experiences of emergency medicine specialists and pre-hospital emergency technicians to improve the diagnostic accuracy of the stroke scale in Iran. Using a mixed method, the study was carried out in two main phases. In the first phase, concept elicitation was conducted based on the review of the literature. Related stroke diagnosis and usual instruments in pre-hospital emergency stroke centers were documented. The IPSS was designed based on semi- structured interviews with 35 neurologists, emergency medicine practitioners and physicians working in hospitals and emergency technicians in the pre-hospital field. In the second phase, the face and content validity, and reliability were checked. According to results from the fi...
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