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The aim of this research is to investigate the musical interest level of the students taking education in varied Departments of the Universities. General survey model has been used as research design. The study group of the research consists of 105 (61 female, 44 male) spring term students taking education in a state university taking place in Western Black Sea region. ‘Interest Level Scale’ developed by Okay, Gençel Ataman and Kırtak Ad was used in order to evaluate the relevance level of students taking education in varied departments. The obtained data was analysed via Mann-Whitney U and Kruskal Wallis H tests. Research findings showed that there is statistical significance among the musical interest level of the students taking education in medical, mechanical engineering and department of Turkish language and literature students. Further, while there is no statistical significance among the students in terms of age and grade, there is a statistical significance in terms of gender and high school types. [ABSTRACT FROM AUTHOR]

Islamic civilizations paid a great importance to mechanical engineering applications in the field of military technology. Pre-Anatolian and especially Ottoman pamphlets contain a rich collection of archery terminology. This issue sank into oblivion, however, during the Medieval Anatolian era, despite the array of publications in the anterior and posterior periods. On this account, the narrative and drawings of medieval engineers such as İbn Erenboğa and Tarsusî have survived. Through these enginerring treatises, we became accustomed to the terminoloy of throwing machine such as arrade, carh, zemberek. In İbn Bîbî's Selcukname, arrade, carh and zemberek are often mentioned. The Carh known as crossbow in western literature and kavs-al rijl in Arab literature, is a weapon belonging to the category of the sort of swaddle bow. It was used as a synonym to zemberek. In the arrow treatises of the Mamluk period used by the cavalry, it was called kavs-ar-rikab. However, it seems that this roller (capstan) type of the carh is not suitable for cavalry. In actual fact, the carh, as a type of crossbow, is a different weapon from the mounted 'tension spring' one. Arrade is a type of catapult weapon that usually throws stone balls. Arrade that could throw stones over a long distance was of different types as attested by the expression Mancınık-ı endâz, Arrâde-i endâz or Neft-i endâz found in the Mübareksah's military treatise. The information we have about the barbs of these machines is very limited. Especially for the Islamic period, this issue remains completely unknown. It is understood that some of the barbs (temren) uncovered by excavations dating from the period of Anatolian Seljuks belong to these weapons. This paper will discuss the specificities of these weapon and of their discovered in the medieval ruins as Samsat and Kubad-abad. [ABSTRACT FROM AUTHOR]

Considering today's competitive enviroment and the required emission regulations, it becomes increasingly important to reduce fuel consumption and harmful exhaust emissions in order to increase engine output power. This can be obtained by developing a well designed injection system or combustion chamber as well as by decreasing the mechanical losses, which are among the most important parameters affecting engine efficiency. The amount of wear rate and its location in the engine should be known to reduce mechanical losses. Therefore, piston ring-cylinder liner wear, which constitutes the greatest portion of mechanical losses, must be investigated. Researchers have attempted to measure the amount of wear by using various methods. In addition, there are also studies carried out to improve new coating materials or lubricants for reducing wear rate. In this study, these measurement methods are discussed and compared with each other in terms of their advantages and disadvantages. [ABSTRACT FROM AUTHOR]

In this study, Undergraduate Education Program and Mechanical Engineering Education in the USA are emphasized. Some universities of U.S.A. are investigated, compared with the Undergraduate Curriculum of universities in Turkey and then the differences are evaluated. While comparing, courses are collected in four main categories which are Basic Sciences, Engineering Sciences, Mechanical Engineering and Social Sciences. Total credits of courses in each category arc compared for the mentioned countries. At the end of the examination, the largest difference is determined in the total credits of Social Sciences. [ABSTRACT FROM AUTHOR]

In this study, the dynamic behaviour of an electrohydraulic position control system with opposite load is theoretically and experimentally investigated. Experimental tests are carried on the hydraulic system test rig which is available in the Mechanical Engineering Department, Engineering and Architecture Faculty ofUludag University. The variable opposite load used on the system is provided by a spring element. A MA1LAB/Simulink/Simhydraulic model is build for simulation studies. The dynamic behaviour results with and without opposite load are compared with experimental and simulation results.Agood agreement is shown between these results. [ABSTRACT FROM AUTHOR]

In this study, an experimental application has been achieved for three phase induction motors including observation and control the motor speed by adjusting the frequency. A frequency converter and a PLC (Programmable Logic Controller) have been used in the system as main hardware units. Experimental operations such as starting and stopping the motor, speed control, changing the direction of rotation, observing the actual operation values can easily be achieved over a user friendly and multi functional interface. The data obtained from the experimental set has been transferred to the user interface via the OPC (OLE for Process Control) server software. Thanks to the study implemented, it has been tested that speed control of the motor has been achieved speedily and safely. Furthermore, an educational set has been developed to perform frequency/speed control experiment for students who have lack of equipment to perform the tests. [ABSTRACT FROM AUTHOR]

In this study, electromagnetic solenoid has been designed for valve mechanism on a compressed air engine. Mechanical valve mechanism has been removed and a special designed electromagnetic solenoid has been placed. The solenoid that provides the transfer of compressed air to engine has been controlled by driving circuit related to the speed of the engine. Electrical and magnetic parameters of the solenoid designed with analytical and finite element method using Ansoft Maxwell 2D software, have been calculated and the simulation results have been compared with prototype. In addition, to overmatch of desirable force, it has been provided that solenoid reacted to defined time. Theoretical approach has been considered and the simulations have been repeated to provide optimum design of the solenoid. According to the simulation results, the wire diameter and the armature mass have a measurable effect on response time. Analytical methods and simulation results are compatible with prototype results. [ABSTRACT FROM AUTHOR]