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Yayın A global optimal control methodology and its application to a mobile robot model(Elsevier B.V., 2016) Dinçmen, ErkinA global optimal control algorithm is developed and applied to an omni-directional mobile robot model. The aim is to search and find the most intense signal source among other signal sources in the operation region of the robot. In other words, the control problem is to find the global extremum point when there are local extremas. The locations of the signal sources are unknown and it is assumed that the signal magnitudes are maximum at the sources and their magnitudes are decreasing away from the sources. The distribution characteristics of the signals are unknown, i.e. the gradients of the signal distribution functions are unknown. The control algorithm also doesn't need any position measurement of the robot itself. Only the signal magnitude should be measured via a sensor mounted on the robot. The simulation study shows the performance of the controller.Yayın Introducing professional skills during unit operations laboratory(American Society for Engineering Education, 2011-06-26) Rende, Sevinç; Rende, Deniz; Baysal, NihatUnit operations laboratory (UOL) course is considered to be a crucial and integral part of the chemical engineering education. The primary objective of the course is to enable students to combine theory and practice. Problems in industry however entail more than finding technical solutions. Indeed professional life requires other skills such as an ability to propose ideas, develop practical solutions, participate in teamwork, meet deadlines, establish communication between technical support and suppliers, oversee financial issues, and finally reporting and presentation skills. This study describes how in three consecutive courses, we preserve academic rigor of the UOL course while incorporating components such as experimental design, project development and teamwork, which aim to meet the needs of professional careers. We follow up the course outcomes with a survey targeting the graduates of the program. The results show that graduates employed in industry frequently rely on these skills during job interviews, research and product development, whereas those who pursue advanced degrees in academia use these skills predominantly for their research, highlighting the need for adaptive approach for different graduate trajectories in designing the course. For both groups of graduates, the skills introduced during the UOL courses are reported to be valuable in their daily life, emphasizing life-long learning.Yayın Preliminary TL and OSL investigations of obsidian samples(Univ Agean, Dept Mediterranean Stud, 2010) Polymeris, George S.; Gogou, D.; Afouxenidis, Dimitrios; Rapti, Sofia; Tsirliganis, Nestor C.; Kitis, GeorgeObsidian is a volcaniclastic mineral extremely hard to break, which was used in prehistoric Greece (and elsewhere in the World), in order to provide tools, weapons, knives and arrowheads. The present work aims to characterize this extremely precious tool stone by using both thermoluminescence (TL) and optically stimulated luminescence (OSL) techniques and investigate its potential use for luminescence dating purposes. Basic TL and OSL properties, such as TL and OSL thermal and optical stability, repeatability, TL and LM-OSL glow curve shape and mainly the linearity of the TL and OSL signals as a function of beta dose were investigated. Artificially irradiated samples indicate all promising luminescence features, such as the 110 degrees C TL peak and dose response sub-linearity for intermediate doses, quick and effective bleaching all over the entire TL glow curve, along with quite linear CW-OSL dose response for doses larger than 5 Gy. The lack of predose sensitisation indicates the suitability of the material for single aliquot measurements. Furthermore, several features provide indications that the signal does not relate to quartz, but in fact to other silicates. Unfortunately, both lack of bleaching ability for NIL signal, along with a peculiar shape of NOSL, provide major difficulties in dating applications.Yayın STEAM approach in architectural education(EDP Sciences, 2019-06-22) Süyük Makaklı, ElifArchitecture practice is reshaped by new technological developments such as virtual reality, augmented reality, 3D printing, computational design, robotics, etc. Future architects are expected to deliver spatial solutions, to understand changing living conditions and to discover the different future by responsing technological improvements. In architecture schools, students should explore and investigate design practice with different production methods, systems and materials by using various technologies in collaborations with interdisciplinary partners and industry. The study aims to understand the STEAM concept which is considered as a promising education approach and formulated; science, technology, engineering, math and then adds an 'A' for arts which represents the creative thinking and design approach. The STEAM concept and its place in the architectural education are discussed. The discipline of architecture is an intersection of technology, art and science. The architecture schools' curriculum reflects the interdisciplinary STEAM nature throughout the history. Virtual Reality (VR) is created through interdisciplinary technology and has the potential to prepare the students to future, to develop analytical and abstraction abilities.Yayın TL and OSL response of turquoise for dosimetric application(University of Aegean, 2010) Subedi, Bhagawan; Afouxenidis, Dimitrios; Polymeris, George S.; Tsirliganis, Nestor C.; Paraskevopoulos, Konstantinos M.; Kitis, GeorgeTurquoise is one of the amongst first gem stones used in jewelry and possessing cultural value since 2000 BC (at least). This work attempts characterize this stone scientifically using both thermally (TL) and optically stimulated luminescence (OSL) techniques. The experimental investigation included 1) the study of the natural TL and OSL signals, 2) the reproducibility of TL sensitivity over repeated irradiation and TL readout cycles, 3) dependence of sensitivity on annealing temperatures and 4) the TL and OSL dose response curves. The potential use of the TL and OSL techniques in determination of provenance, accidental dosimetry and probably to authenticity and dating purposes are then discussed.Yayın Women's empowerment and welfare traformation in the context of microcredit in Turkey(Pressacademia, 2015-06-04) Soykut Sarıca, Yeşim Pınar; Çağlı Kaynak, ElifGender inequalities are of the main problems in almost every society. Like all other parts of the system, economic and business environment haven't attempted sufficiently in struggling with this issue. When these inequalities combined with development problems the growth of poverty among women and their exclusion from society multiplies. Although there is so much struggle for constructing equal society women are still considered as ignorant part of the society and hence, vulnerable beings, who have to be protected and taken care of. In this sense women have not much chance for being "independent individual" both in social and economic terms. However these constraints upon women's vulnerability and inability are tried to be changed by Microfinance system to move from the perspective of women's empowerment. In this paper, we try to analyze whether the performance of practices by the non-governmental organizations ability to achieve objective to improve the living conditions and interest of the women in the society or not by comparing to micro credit organizations in Turkey. We also try to answer whether women's participation in employment contributes to well-being their lives and contributes their role in working life.Yayın Basic design in architectural education in Turkey(E D P Sciences, 2016) Süyük Makaklı, Elif; Özker, SerpilCreative activity is one of the most significant parts of architectural education. In the architectural curriculum organisation 'design studio' is the unique and preeminent subject. Freshman students encounter 'design' first in basic design course, before they know what designing incorporates. The Basic Design is the starting point of initiating creativity in architecture education. It helps each student to understand architecture as a creative and innovative practice in the first year of education. This study analyzes the characteristics of basic design course, the topics of the course contents and its significance in the architectural curriculum in Turkey as well.Yayın An emprical point error model for TLS derived point clouds(International Society for Photogrammetry and Remote Sensing, 2016) Özendi, Mustafa; Akça, Mehmet Devrim; Topan, HüseyinThe random error pattern of point clouds has significant effect on the quality of final 3D model. The magnitude and distribution of random errors should be modelled numerically. This work aims at developing such an anisotropic point error model, specifically for the terrestrial laser scanner (TLS) acquired 3D point clouds. A priori precisions of basic TLS observations, which are the range, horizontal angle and vertical angle, are determined by predefined and practical measurement configurations, performed at real-world test environments. A priori precision of horizontal (??) and vertical (??) angles are constant for each point of a data set, and can directly be determined through the repetitive scanning of the same environment. In our practical tests, precisions of the horizontal and vertical angles were found as ??=±36.6 and ??=±17.8, respectively. On the other hand, a priori precision of the range observation (??) is assumed to be a function of range, incidence angle of the incoming laser ray, and reflectivity of object surface. Hence, it is a variable, and computed for each point individually by employing an empirically developed formula varying as ??=±2a'12 mm for a FARO Focus X330 laser scanner. This procedure was followed by the computation of error ellipsoids of each point using the law of variance-covariance propagation. The direction and size of the error ellipsoids were computed by the principal components transformation. The usability and feasibility of the model was investigated in real world scenarios. These investigations validated the suitability and practicality of the proposed method.Yayın In the context of interior architecture departments in Turkey; Design studio (project) education(E D P Sciences, 2016) Süyük Makaklı, Elif; Özker, SerpilThe courses of design studio are the most weighted elements in education as an essential part of interior architecture education. There are areas where thinking and design skills of the students are improved yet it is different from other courses. Increased number of students for each academic member in the project courses conducted through a mentor system has resulted in failure to sustain project-oriented education actively and reduced the productivity quality of education. Accordingly, the purpose of this study is to address the educational methods applied in various forms in the design studio courses of Interior Architecture departments in Turkey.Yayın Venture capital and business angels: Turkish case(Elsevier Science BV, 2016) Teker, Suat; Teker, DilekVenture capital (VC) may be defined as a support to entrepreneurial talents and appetite by turning ideas and basic science into products and services which are expected to envy the world. Although venture capitalists and business angels supply external funding for risky investments, the aspects of venture capitalists and business angels are different approaching the investment candidates. Business angels in the last decade have become undispansible players providing external capital for risky start-ups and contributing technological advancements and economic growth. Business angels could be either private wealth individuals or institutional venture capitalists. Private angels invest their own money that's why their invested capacity are limited while venture capitalists invest others'money with an extensive source. This research examines the the way of doing business for venture capitalists and business angels. Furthermore, venture capital market and business angels are reviewed for the Turkish case.
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