Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14517/19

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Citation Count: 5
An analysis of concurrence entanglement measure and quantum fisher information of quantum communication networks of two-qubits;
(IEEE Computer Society, 2014) Erol,V.; Bugu,S.; Özaydin,F.; Altintaş,A.A.
Quantum entanglement is one of key concepts in quantum communication engineering. Ordering the quantum systems according to their entanglement measures is a popular problem of the field. For two level (qubit) systems of two particles, state ordering has been studied with respect to well-known entanglement measures such as Concurrence, Negativity and Relative Entropy of Entanglement (REE) [1-5]. In this work, we study the state ordering of the two-qubit systems with respect to Quantum Fisher Information vs. Concurrence. In particular, constructing 1K random states and calculating their Concurrences and Negativities, we obtain the orderings of the states by comparing these results with Quantum Fisher Information values and present our results which are interesting when compared to that of two-level systems. © 2014 IEEE.
Citation Count: 2
Analysis of Negativity and Relative Entropy of Entanglement measures for qubit-qutrit Quantum Communication systems;
(Institute of Electrical and Electronics Engineers Inc., 2015) Erol,V.; Ozaydin,F.; Altintas,A.A.
Quantum Computers are provisioned as very high performance computers using quantum mechanical aspects for information processing. Quantum Information Theory and Quantum Computing topics are really popular topics in academia aiming the construction of theoretical background of Quantum Computers. The information processing units for Quantum Computers are defined as qubits but for some problems three level (trinary) systems may be applied as well. We call these three level systems as qutrits. The scope of this work is the analysis of well-defined entanglement measures Negativity and Relative Entropy of Entanglement (REE) [1-5] for qubit-qutrit quantum systems. In this manner, for randomly generated 1000 qubit-qutrit and 1000 two qubit states the mentioned measures are calculated and these values are compared. These comparisons are analyzed and for quantum state ordering problem, very interesting results are reported. © 2015 IEEE.
Citation Count: 4
Are we there yet? Spiral model: Human rights institutions-state-EU relations in Turkey;
(International Relations Council of Turkey, 2011) Alemdar,Z.; Uluslararası İlişkiler / International Relations
Boomerang and spiral models, explaining the ways in which domestic actors form transnational networks with international organizations in order to change the repressive policies of their states, argue that these international interactions are eff ective in the implementation and internalization of international human rights norms. In the Turkish case, although the EU accession process gave way to foundation of human rights institutions, and new laws were enacted, we observe that the institutions are organized and they function ineff ectively, and the laws can be overturned through practices. Th ese examples show that despite their predictions, the boomerang model can run in reverse, the spiral model does not run in its gradual course. A comparative look at the Turkish case also shows that the models' main weakness is not only that they lack a more comprehensive look at how the international and domestic interact but also they need a better look at the internal dynamics of the international organizations that are the networking partners.
Citation Count: 0
Assessment of Nursing Students' Attitudes and Awareness Towards Professional Research and Development;
(AVES, 2020) Dincer,S.; Eker,O.; Deniz,Y.; Karacay,P.; Yazici,O.; Hemşirelik / Nursing
Objective: To assess nursing students' attitudes and awareness towards research and development and determine the affecting factors. Material and Methods: This study had a descriptive and correlational design. In total, 182 nursing students studying in two foundation universities in Istanbul participated in the study. Data were collected using the sociodemographic characteristics form and the nursing students' attitudes and awareness towards research and development scale. Results: The mean age of the nursing students was 20.91±1.93 years, 80.2% were women, 30.2% were first-year students, and 64.3% were Anatolian high school graduates. A total of 60.4% of the students stated that they did not take any course on research, 79.7% stated that they did not have any research experience, 72.5% stated that they did not follow scientific publications, 46.2% stated that they did not read scientific journals, and 63.7% stated that they did not receive training on how to access evidence-based information. The mean score of the students on the scale was 128±16.0. A significant statistical difference found between the students' total score on the scale and their sex, research experience, frequency of following scientific publications and reading scientific journals, and thinking of the educated to access evidence-based information (p<0.05). Conclusion: It was determined that nursing students were aware of research and development and had positive attitudes. Nursing students should be given training on how to access scientific knowledge in their undergraduate education, be asked to use evidence-based information in their assignments and be encouraged to participate in the nursing faculty research projects. © 2020 Archives of Health Science and Research. All rights reserved.
Citation Count: 0
Assessment of R&D activities in the pharmaceutical sector;
(University of Ankara, 2019) Kayserili,A.; Kiyak,M.; Sağlık Yönetimi / Healthcare Management
Objective: In recent years, drug research and development (R&D) activities have increased due to public incentives. The aim of this study is to assess pharmaceutical R&D activities, the perspective of national and international pharmaceutical companies on R&D as well as R&D investments of international pharmaceutical companies in Turkey. Material and Method: This study is a qualitative research and individual in-depth interview technique was employed for data collection. Interviews were conducted with sixteen pharmaceutical companies which were the members of Association of Research-Based Pharmaceutical Companies and Pharmaceutical Manufacturers Association of Turkey, with seven Universities, and Ministry of Health, Ministry of Industry and Technology, Turkish Pharmacists Association, the Economic Policy Research Foundation of Turkey, and the Marmara Research Center. Result and Discussion: The national pharmaceutical companies need to focus R&D activities on high added value drugs. Bayraktutan and Bidirdi [10] emphasized in their research on technology and competitiveness that the countries and the enterprises which perform R&D and give importance to technology development will gain a competitive advantage in international markets. Although biosimilar drugs are the first step in technology transfer, it is unknown whether the industry will switch to original biotechnology drug R&D in the future. There is a need for clusters and an effective R&D ecosystem in Turkey. © 2019 University of Ankara. All rights reserved.
Citation Count: 6
Attachment and being in bullying system: Mediational role of coping strategies;
(2010) Özen,D.Ş.; Aktan,T.
The objective of this study is to determine whether the parental attachment style of the adolescent plays a role in his/her exposure to bullying or being its perpetrator and to explicate the intermediary role of the coping strategies in this relation. As the sampling group for this study, 410 students, 197 girls and 213 boys, have been chosen from the 6th, 7th, 8th, 9th and 10th grades in three private and two general elementary and high schools in İstanbul. In this study "Peer Victimization Scale", "Peer Bullying Scale", "Parental Attachment Scale" and "Coping Strategies Scale" were utilized to gather data. The results of the analysis indicate that the parental attachment security reasonably predicts the role of the subject (a victim or a bully) for male adolescents in the bullying system. Moreover, it has also been observed that the avoidance strategy among the stress coping strategies plays an intermediary role in the relationship between parental attachment security and exposure to bullying in male adolescents. In other words it strengthens the said relationship. Findings are discussed within the framework of the related literature.
Citation Count: 0
Capacity and association for outdoor small cell LTE-A network;
(IEEE Computer Society, 2014) Tureli,U.; Kivanc,D.; Mekatronik / Mechatronics
This paper presents theoretical and numerical analysis of interference and throughput for Long Term Evolution Advanced (LTE-A) outdoor small cells using a detailed simulation. In the simulation program, the downlink from base station to mobile user was studied and results are shown. © 2014 IEEE.
Citation Count: 0
Channels of being informed about kidney transplantation centers for patients with end stage kidney disease
(Aves, 2012) Gurkan, Alp; Gulhan, Yildirim B.; Tilif, Suleyman; Gul, Yeliz; Genel Cerrahi / General Surgery
Purpose: There are around 60,000 patients going through dialysis in our country. Although there are numerous successful transplant teams, the number of transplantations achieved has not reached the desired level. For this reason, kidney transplantation centers which keep increasing in number, have started different activities to inform these patients about the kidney transplantation. In our study, the patients having applied to three of the transplant centers in Istanbul were observed on how efficacious the activities were on the subjects. Patients and method: Patients having applied to the transplant centers in A (n: 1314), B (n: 27) and C (n: 229) hospitals, in the period between January 2, 2008 and December 31, 2010 were investigated by the organ transplant coordinators about how they were informed about these centers. In this study, it was observed that the patients got to know about the centers through dialysis centers stuffs, nephrologists, other patients, media and internet, etc. sources. We investigated on the differences these sources created in the different hospitals. In addition to these, on July 1, 2010; a website was established by A hospital with the same purpose. Also, the effect of this site in referring patients to the clinic was investigated. Results: We found out that patients were informed about organ transplantation centers from other patients, who have had organ transplantation (40.6%); dialysis centers (32.9%), media (9.6%), nephrologists (8.0%), internet (5.2%) and others (3.6%) (p=0.011). In A hospital, the mean average application number which was 34.6 patients/month went up to 44.5 patients/month after the establishment of the website. The website was found to be the only reason for the increase. Conclusion: Besides the mentioned factors; the internet which lately plays a great role in our daily life, also becomes an important guide for information for patients who want to have organ transplantation.
Citation Count: 1
Cloth Combine Estimation System Using Deep Learning;
(Institute of Electrical and Electronics Engineers Inc., 2020) Kara,B.; Kalkan,H.
The clothing companies are paying more attention on meeting their customers on digital platforms and perform their marketing over the cloth combines which are created by fashion designers. Moreover, the companies on e- commerce platform use cloth recommendation system to draw their customers attention and perform sales. The customers browsing the e-commerce sites are facing some cloth recommendations based on the statistics such as 'those looking at this product also looked at this product'. However, beside of statistical recommendations, more intelligence is required to recommend the cloth which combines the cloth that customers own or going to own. In this study, a cloth combine completion system is developed for e-commerce. The system is based deep neural network (DNN) and it is intended to imitate the fashion designer of the brands on digital market. The study is performed over the cloth combines shown on the e-commerce site of an international cloth company. In contrast to applications based on image processing, the clothes are parameterized depending on expert knowledge and a deep neural network is trained to find the best bottom clothing to the selected top clothing. Using the trained network, the brands can create user specific cloth combines as if the combines are performed by fashion-designer. © 2020 IEEE.
Citation Count: 0
Commonly confused terms in medicine;
(Nobelmedicus, 2017) Seren,L.P.; Yakıncı,C.
Language is an instrument for handing down thoughts, scientific knowledge, poetic and literary works. Language is as alive as the society which uses it and is ever changing. In this paper, attention is drawn to another aspect of language use in medicine, namely, the use of medical terms. © 2017, Nobelmedicus. All rights reserved.
Citation Count: 3
A comparative noise robustness study of tree representations for attribute profile construction;
(Institute of Electrical and Electronics Engineers Inc., 2017) Koc,S.G.; Aptoula,E.; Bosilj,P.; Damodaran,B.B.; Mura,M.D.; Lefevre,S.
Morphological attribute profiles are among the most prominent spatial-spectral pixel description tools. They can be calculated efficiently from tree based representations of an image. Although mostly implemented with inclusion trees (i.e. component trees and tree of shapes), attribute profiles have been recently adapted to partitioning trees, and specifically α- and ω-trees. Partitioning trees constitute a more flexible option especially when dealing with multivariate data. This work explores the noise robustness of the aforementioned major tree types in terms of pixel classification performance of the resulting attribute profiles, and presents our preliminary findings that support the use of partitioning trees as a basis for attribute profile construction. © 2017 IEEE.
Citation Count: 1
Comparison of Sampling Methods Using Machine Learning and Deep Learning Algorithms with an Imbalanced Data Set for the Prevention of Violence Against Physicians
(Institute of Electrical and Electronics Engineers Inc., 2021) Cakir,H.; Incereis,N.; Akgun,B.T.; Tastemir,A.S.Y.
The aim of this study is to compare sampling methods using machine and deep learning algorithms with a small and imbalanced data set for the prevention of violence against physicians. In this data set, it is determined whether there is violence against physicians by using various demographic information of physicians. In addition, in this study, it is tried find effective solutions to improve the working conditions of physicians in order to reduce violence against physicians. As a solution to the imbalanced data problem, Synthetic Minority Oversampling (SMOTE), Random Oversampling (ROS) and Random Undersampling (RUS) methods were used to balance the data in this study. Then, Random Forest Classifier (RFC), Extra Tree Classifier (ETC) and Multi-Layer Perceptron (MLP) algorithms were applied. Among all sampling techniques and classification algorithms, the ETC algorithm applied with the ROS method shows the best performance with 82% accuracy and 0.81 F1-Score. © 2021 IEEE.
Citation Count: 0
Computer aided design and parametric analysis of rectangular microstrip patch antenna;
(IEEE Computer Society, 2014) KüÇük,F.; Özer,A.Z.; Ogut,E.; Bölükbaş,D.
Nowadays, microstrip antennas, with the advantages of low cost, easy to use and easy production have quite wide application area. At this paper, the design criteria of a rectangular microstrip antenna is investigated and computer aided analyses are performed. Two antenna designs have been realised which the operating frequencies are 900 MHz and 1800 MHz respectively and the effects of geometrical properties to the resonance frequencies are analysed. At this work, the effects of coaxial cable feed and microstrip feed, to the input impedance is analysed. The analyses are performed with ANSYS HFSS® software and the results are presented. © 2014 IEEE.
Citation Count: 0
Coverage and throughput of heterogenous LTE-A network with biased BS association * (Ingilizce);
(2013) Türeli,U.; Ayikol,D.; Kivanç,D.
Biasing for base station (BS) association in heterogeneous LTE-A networks has been proposed to improve throughput and coverage. This paper presents theoretical and numerical analysis of throughput and coverage for biasing SINR criterion to associate with micro or femto cell using in a simulation program. In the simulation program, the downlink from base station to mobile user was studied and results are shown for 3 dB biasing to motivate association to femto base station. © 2013 IEEE.
Citation Count: 3
Cryberchondria Level in Women with Heart Disease and Affecting Factors;
(AVES, 2020) Güleşen,A.; Beydaǧ,K.D.
Objective: This study was conducted to determine the cyberchondria levels of women being treated for heart disease in training and research hospital and the factors affecting these levels. Materials and Methods: The population of this descriptive and cross-sectional study was composed of 331 female patients, who presented to the Cardiology and Cardiovascular Surgery services of Koşuyolu High Specialized Training and Research Hospital between August 2018 to October 2018. Moreover, the patients who were diagnosed with heart disease were literate, spoke Turkish, and volunteered to participate in the study. Before the sample was selected, data collection was continued until the total number of the sample was met with the patients who were in compliance with the study criteria and willing to participate in the study. Research data were collected by a descriptive data collection form and by the Cybercondria Severity Scale (CST). For the evaluation of the data, number-percentage calculations, the Mann Whitney-U test, the Anova test, and a t-test were used. Results: About 38.7% of women who participated in the study expressed that they searched their diseases on the internet, while 75.8% of them expressed that they watched health related programs. About 8.8% of the participants stated that they underwent extra tests without the physician's recommendations, and 12.7% of them used medication without the physician's recommendation. A total of 25.4% of them believe that the information on the internet was correct and 36% of them said that they sometimes made decisions about their health issues according to that information. The average CST score of the women was found to be 68.00±27.04. An increase in the anxiety related to behaviors such as online searching and self-evaluation about health issues was determined at a low level. No statistically significant difference was found between the participants' marital status, watching health-related programs on TV, taking tests and medicines without the physician's recommendations, and the CST average score (p>0.05). The anxiety of the participants who were over and under 50 years old, had graduated from high school or a higher level, were employees, whose income levels were at the middle and higher level, had children, had never been operated, had been diagnosed with a disease for less than a year, and believed that the information on the internet was correct and made a decision according to this information, was increased due to the online searching and self-evaluation behaviors about health issues (p<0.05). Conclusion: Nurses should take an active role in training patients who are being treated for heart disease, by eliminating the need for information and directing patients to reliable information sources. @ Archives of Health Science and Research.All rights reserved.
Citation Count: 0
Design and analysis of traction system for electric kick scooters;
(Institute of Electrical and Electronics Engineers Inc., 2020) Serter,B.; Kıvanç,Ö.C.; Üstün,Ö.
Today, an important part of the continuously developing electric vehicle technology is light electric vehicles. Electric kick scooters are one of the most basic types of light electric vehicles and their usage areas are increasing day by day. Especially for personal use and shared transportation systems, electric kick scooters have an important place. In this study, the design of the electric motor of a standard electric kick scooter and the characteristics of the power electronics and battery system suitable for this motor are presented. The rated power and maximum power values are determined within the scope of the vehicle's basic parameters, road performance and standards. The electric motor designed in the brushless direct current motor topology has a rated power of 300W and a maximum power value of600W. The motor has been designed for different number of slot-pole ratios, and the most suitable motor has been selected considering the manufacturing, cost and performance values. The fundamental structures and values of motor driver and battery package are briefly investigated. A proper battery capacity is given for maximum allowable travel distance. © 2020 Turkish Chambers of Electrical Engineers.
Citation Count: 1
Designing a smart home energy management system to improve cost/comfort factor;
(Institute of Electrical and Electronics Engineers Inc., 2020) Kıvanç,Ö.C.; Akgün,B.T.; Bilgen,S.; Öztürk,S.B.; Baysan,S.; Tuncay,R.N.; Bilgisayar Mühendisliği / Computer Engineering
Home energy management systems optimize the energy buying/selling amount to reduce high costs by increasing individual energy consumption. Shifting the consumption time depending on the tariff is provided as cost, and the more effective and automatic operation of the devices is offered to the user as comfort. In the study, a hardware and software are developed that can estimate solar energy potential, energy consumption and automatically regulate the comfort/cost ratio of domestic energy using these data. Battery status, electricity buying/selling price, weather condition and consumption forecast data are evaluated by fuzzy logic algorithm and provide the ratio of comfort and cost effectiveness. The obtained comfort and cost effectiveness determine the optimum energy supply amount between the battery, grid and solar energy using the simulated annealing algorithm. As a result of the study, it has been determined that the energy cost for the user has decreased and the comfort has increased. © 2020 Turkish Chambers of Electrical Engineers.
Citation Count: 0
Determination of Spiritual Well-Being and Hope Level of Patients Undergoing Open Heart Surgery: A Descriptive Study;
(Ortadou Reklam Tanitim Yayincilik Turizm Egitim Insaat Sanayi ve Ticaret A.S., 2022) Çiçekli,N.; Çalişkan,I.
Objective: This study was carried out in a descriptive type in order to determine the spiritual well-being and hope level of the patients who will undergo open-heart surgery. Material and Methods: The sample of the study consisted of 166 patients hospitalized for open heart surgery at the University of Health Sciences Kartal Koşuyolu Yüksek İhtisas Training and Research Hospital. The data of this study were collected with the patient information form, Herth Hope Index, Spiritual Well-Being Scale. Descriptive data in the analysis of the data were used for the number percent calculations, Kolmogorov-Smirnov test, one-way ANOVA, t-test for independent groups, Kruskal-Wallis test, and Pearson correlation analysis. Results: 72.3% of the patients participating in the study are in the age group of 51 and above, 69.3% are male, 45.3% are primary school graduates, 84.9% are married, 51.2% will undergo bypass surgery. It was determined that 84.3% of them had not undergone heart surgery before, and 41% of them stayed in the hospital for 4-6 days. The total score of the Spiritual Well-Being Scale of the patients was 115.93±10, and the total score of the Herth Hope Index was 39.11±5.40. There was no statistically significant difference between the scores obtained from the Spiritual Well-Being Scale according to the descriptive characteristics of the patients who volunteered to participate in the study (p>0.05). A statistically significant difference was determined between the education level of the patients within the scope of the study, their previous heart surgery and the length of stay in the hospital, and the scores they got from the Herth Hope Index (p<0.05). Conclusion: It was concluded that the patients had high spiritual well-being and hope levels, and there was no relationship between spiritual well-being and hope level. Copyright © 2022 by Türkiye Klinikleri. This is an open
Citation Count: 0
Determination of vibration estimation formula unique for akyol quarry;
(Hacettepe Universitesi Yerbilmleri, 2014) Aksoy,M.; Kahriman,A.; Makine / Machinery
In this study, blasting performed for excavation at Akyol quarry was monitored with vibration monitors and 36 events in twelve shots were recorded for this purpose. During these measurements, one of the vibration monitors was placed as close to shot point as possible. The idea behind this application was to determine the vibration attenuation characteristics of Akyol quarry site, including the immediate area behind the shot points. Afterwards, the records were subjected to statistical analysis. As a result, peak particle velocity (PPV) prediction formula unique for this site was obtained. Blasting chart which can be used as a guide to predict PPV for future blasting was prepared by using this formula. © 2014, Hacettepe Universitesi Yerbilmleri. All rights reserved.
Citation Count: 1
Different filter approaches and performance analysis of fundamental sensors in autonomous ground vehicles;
(Institute of Electrical and Electronics Engineers Inc., 2016) Atila,B.; Mungan,T.E.; Kivanc,O.C.
Autonomous ground vehicles are being designed and produced for industrial or military purposes. Since most of these vehicles are high cost the sensors used are high sensitive. However, sensors used in low cost robotic applications have low resolution. When non-precision sensor data added to measurement errors caused by different typical of geometry and drive methods, process functions of robots are hitching. To prevent this, five simple-structured filters are designed and compared in this study for low cost distance sensors and GPS sensors data. It has been observed that accuracy of hybrid-structured filters are more suitable than mono-structured filters in the results obtained. © 2016 IEEE.

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