Atılım Üniversitesi / Atılım University
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Article Citation Count: 0ANALYSING THE ALLOGRAPHIC NOTES IN THE TURKISH TRANSLATION OF AN ECOLOGICAL WORK: SILENT SPRING(Konstantin Preslavsky University of Shumen, 2024) Hastürkoğlu, Gökçen; English Translation and InterpretationParatextual elements play a crucial role in original and translated works, serving as a bridge between the creators and the recipients of the works. Analysing these elements can provide a deeper understanding of the motives of the authors, publishers, and translators. This study aims to investigate the allographic notes, specifically the translator's notes, in the Turkish translation of Silent Spring, a work that raises awareness about environmental impacts of DDT on ecology. The study also seeks to reveal, in such an ecological context, the translator's approach and motives in using footnotes categorized as factual and interpretive notes and their functions. The qualitative analysis indicates that the factual notes outnumber the interpretive notes and the main function of the translator's notes is to provide definitional and explanatory information about the ecology-related terminology which is in line with the genre of the text and the characteristics of the target readers. © 2023 Gökçen Hastürkoglu.Book Part Citation Count: 0Approximation of Discontinuous Functions by q-Bernstein Polynomials(Springer international Publishing Ag, 2016) Ostrovska, Sofiya; Ozban, Ahmet Yasar; Özban, Ahmet Yaşar; MathematicsThis chapter presents an overview of the results related to the q-Bernstein polynomials with q > 1 attached to discontinuous functions on [0, 1]. It is emphasized that the singularities of such functions located on the set Jq : = {0} boolean OR {q-l}(l=0, infinity), q > 1 are definitive for the investigation of the convergence properties of their q-Bernstein polynomials.Book Part Citation Count: 0Architectural Competitions in a Maturing Milieu: Mapping the Agency of Actors(Springer, 2023) Bican, Nezih Burak; Guneri,G.; ArchitectureThe last three decades, overwhelmed with capitalist competitive urbanisms, have witnessed a renewal of interest in the relationship between urban form and “the right to just cities,” mainly upon discussions over diversity and participation. The same period also witnessed the triumph of architectural competitions both as effectual tools of agonism and as potential means of cultivating participatory cultures in the production of urban space. Recent discussions, hereof, suggest that competitions’ agonistic vocations counteracted the pluralist. To solidify this critical rhetoric, withal, there is insufficient research on power dynamics, structures, and implications of competitions. Herein, this study, in its broadest sense, investigates the potency of architectural competitions in allocating spatial, social, political, and economic resources and capacities. The work critically and creatively maps the dynamics and structures of competitions and further testifies (potential) agencies of multifarious actors among these, specifically delving into the emergent local governance structures of two cities from a developing country: Istanbul and Ankara. With divergent spatial development histories and trajectories, the two become complementary cases, novel local governance models of which fundamentally operationalize architectural competitions as means of commoning and register a radical paradigm shift. From a critical and comparative framework, the research reviews literature and relevant data and relies on semi-structured interviews with local government officials, city councilors, competition organizers, jurors, and critics. The findings highlight repressive processual components and potential means and methods of cultivating public agency and a solid and longstanding tradition of public participation in urban space production via architectural competitions. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.Article Citation Count: 0Association between Rutherford Classification and CHA2DS2-VASc, CHADS2 and ASCVD Scores in Peripheral Artery Disease Patients(Bmc, 2020) Karaduman, Bilge Duran; Ayhan, Hüseyin; Keles, Telat; Bozkurt, EnginBackground and Aim: The classification system is important in assessing the severity of Peripheral Artery Disease (PAD) and making the treatment decision. However, classification systems may not be sufficient and scoring systems developed to predict cardiovascular and cerebrovascular events can also be useful to assess the severity of PAD. In this study, our aim was to investigate the association of the Rutherford classification and CHADS(2), CHA(2)DS(2)-VASc and ASCVD scores in PAD patients. Method: A total of 65 consecutive patients with PAD (males 92.3%, mean age 63.0 +/- 9.2 years), who underwent percutaneous peripheral intervention were included in our retrospective study. Results: There were 16 patients in Category 2, 31 patients in Category 3, and 10 patients in Category 4 and eight patients in Category 5. The CHADS(2), CHA(2)DS(2)-VASc and ASCVD scores were found to be significantly different among the Rutherford categories and between each other. From Category 1 to 5, CHADS(2), CHA(2)DS(2)-VASc and ASCVD scores were significantly increased. When we grouped the scores as CHADS 2 <2 and <2 and CHA(2)DS(2)-VASc<4 and >= 4, it was determined that as the category increased the score group also increased. There was significantly correlation between CHADS(2), CHA(2)DS(2)-VASc and ASCVD scores with the Rutherford categories in correlation analyses. Conclusion: As far as we know, in this study which is the first study about the association of Rutherford classification and scoring systems, the major finding of the present study is that the CHADS(2), CHA(2)DS(2)-VASc and ASCVD scores was independently correlated with the severity of Rutherford Category in patients with PAD. (C) 2020 Association for Research into Arterial Structure and Physiology. Publishing services by Atlantis Press International B.V.Conference Object Citation Count: 0Asymmetric Effects of Credit Growth on the Current Account Balance: Panel Data Evidence(Springer Science and Business Media B.V., 2019) Ekinci, Mehmet Fatih; Omay,T.; Omay, Tolga; EconomicsExpanding current account balances (both surpluses and deficits) prior to the global economic crisis dominated academic and policy debates over the past decade. Understanding the role of credit growth on the current account balance has become a priority particularly with the rebalancing experience in the post-crisis period. In this study, we adopt a comprehensive framework by constructing an empirical model that accommodates asymmetric adjustments of current account balance to the changes in the total and household credit growth. We consider the asymmetric effects in two dimensions. When we discriminate between credit expansion and contraction episodes, our results show that credit growth has a stronger negative impact on the current account balance during credit expansion periods. Furthermore, negative effects of total and household credit growth on the current account balance are more pronounced during current account deficit episodes. © 2019, Springer Nature Switzerland AG.Article Citation Count: 0Automatic Boundedness of Adjointable Operators on Barreled VH-Spaces(Springer Basel Ag, 2022) Ay, Serdar; MathematicsWe consider the space of adjointable operators on barreled VH (Vector Hilbert) spaces and show that such operators are automatically bounded. This generalizes the well known corresponding result for locally Hilbert C*-modules. We pick a consequence of this result in the dilation theory of VH-spaces and show that, when barreled VH-spaces are considered, a certain boundedness condition for the existence of VH-space linearisations, equivalently, of reproducing kernel VH-spaces, is automatically satisfied.Article Citation Count: 0Ay taşımacılığında elektromanyetik fırlatma teknolojisi ve bor(2018) İnger, Erk; Airframe and Powerplant MaintenanceGelecek yıllarda, ay yerinde keşfedildiğinde, aydan uzaya malzeme nakliyesi yeteneklerinin geliştirilmesi planlanmaktadır. Uzay araçlarının yakıt ikmali için gerekli oksijen gibi ay malların yörüngedeki depolara taşınaması sağlanacaktır. Genel olarak aydan malzeme nakliyesi söz konusu olduğunda EMFS (Elektromanyetik Fırlatma Sistemi) teknolojisinin, yakın gelecekteki üstünlükleri çok iyi açıklanabilir. EMFS’nin kimyasal fırlatma sistemine göre, yüksek kapasiteli taşıma, yüksek güvenlik ve çevresel sürdürülebilirlik ile düşük bakım maliyetleri ve yüksek verimlilik gibi çeşitli avantajları bulunmaktadır. Sunulan ön konseptin geliştirilmesi ve bu tür bir sistemle dağıtımının fizibilite ve net faydası ile ilgili, yüksek yük taşıma kapasitesine sahip oluşu EMFS’yi desteklemektedir. EMFS halen sürdürülen bir çalışmadır ve özellikle donanım geliştirme aşamasında dikkate alınması gereken birçok zorlukları bulunmaktadır. Bu çalışmada Yüksek Sıcaklık Süperiletken (HTSC) MgB2 gibi malzemeler, ana güç üretimi, veriyolu çalışması, endüktif enerji depolama, devre açma anahtarları, başlatıcı bobinler ve yükler dahil, birçok EMFS bileşenleri için yaygın olarak kullanılan uygulamalardır.Article Citation Count: 2BIOACTIVITY OF APATITE-WOLLASTONITE GLASS-CERAMICS PRODUCED BY MELTING CASTING(World Scientific Publ Co Pte Ltd, 2013) Park, Jongee; Ozturk, Abdullah; Metallurgical and Materials EngineeringGlass-ceramics containing only apatite and wollastonite crystals were produced in the system MgO-CaO-SiO2-P2O5-F by the melt casting process. The bioactivity of the glass-ceramics was determined by immersing the glass-ceramics in a simulated body fluid (SBF) and by assessing the resulting apatite formation on the free surface after various immersion durations. A 12-mu m-thick apatite layer formed on the surface of the glass-ceramic containing only apatite crystals after 20 days immersion in SBF. However, the thickness of the apatite layer formed on the surface of the glass-ceramic containing apatite and wollastonite crystals was 1 mu m. Results have shown that the bioactivity of glass-ceramic depends strongly on the type of crystal(s) developed during the glass-ceramic process and their proportion in the glassy matrix.Book Part Citation Count: 6Bitcoin Market Price Analysis and an Empirical Comparison with Main Currencies, Commodities, Securities and Altcoins(Springer Science and Business Media Deutschland GmbH, 2019) Dinçergök, Burcu; Dinçergök,B.; Haşlak,Ş.; BusinessThe purpose of this study is to analyze Bitcoin (BTC) market prices and to answer the question of whether there is a relationship between BTC and other asset prices, where other assets include currencies, commodities, securities and altcoins. In the empirical part, we evaluate the lead-lag relationships among each type of asset. Consequently, we compare BTC with major currencies and stock exchanges of the U.S., the EU, the U.K. and Japan (USD-SPX, EUR-DAX, GBP-FTSE and JPY-NIK), with currencies and stock exchanges of the U.S., the U.K., Russia, Venezuela and China where BTC is actively traded (USD-SPX, GBP-FTSE, RUB-MOEX, VEF-IBVC and YUAN-SSCE), with major commodities (GOLD and OIL) and with major altcoins (ETH, XRP and LTC) on a daily basis for the period spanning from 2010.07 to 2018.12. We employ Johansen co-integration, Granger causality, impulse response functions and forecast error variance decomposition analyses in our study. Our results show that BTC does not have a long-run relationship with any asset type, but that it has a short-run relationship with gold and especially altcoins, which are both significant and bidirectional. While BTC and altcoins are closely interrelated with each other, BTC price variation is mostly borne by its own prices in all cases. © Springer Nature Switzerland AG 2019.Conference Object Citation Count: 1Boundary Element Method for Optical Force Calibration in Microfluidic Dual-Beam Optical Trap(Spie-int Soc Optical Engineering, 2015) Baranoğlu, Besim; Cetin, Barbaros; Baranoglu, Besim; Serhathoglu, Murat; Biyikh, Neemi; Manufacturing EngineeringThe potential use of optical forces in microfluidic environment enables highly selective bio-particle manipulation. Manipulation could be accomplished via trapping or pushing a particle due to optical field. Empirical determination of optical force is often needed to ensure efficient operation of manipulation. The external force applied to a trapped particle in a microfluidic channel is a combination of optical and drag forces. The optical force can be found by measuring the particle velocity for a certain laser power level and a multiplicative correction factor is applied for the proximity of the particle to the channel surface. This method is not accurate especially for small microfluidic geometries where the particle size is in Mie regime and is comparable to channel cross section. In this work, we propose to use Boundary Element Method (BEM) to simulate fluid flow within the micro-channel with the presence of the particle to predict drag force. Pushing experiments were performed in a dual-beam optical trap and particle's position information was extracted. The drag force acting on the particle was then obtained using BEM and other analytical expressions, and was compared to the calculated optical force. BEM was able to predict the behavior of the optical force due to the inclusion of all the channel walls.Article Citation Count: 3Clinical outcomes after transcatheter aortic valve implantation in active cancer patients and cancer survivors(Baycinar Medical Publ-baycinar Tibbi Yayincilik, 2021) Karaduman, Bilge Duran; Ayhan, Hüseyin; Keles, Telat; Bozkurt, EnginBackground: In this study, we aimed to evaluate the clinical characteristics, perioperative, and mid-term outcomes of patients with severe symptomatic aortic stenosis and active cancer disease and cancer survivors undergoing transcatheter aortic valve implantation. Methods: Between December 2011 and March 2019, a total of 550 patients (248 males, 302 females; mean age: 77.6 +/- 7.9 years; range, 46 to 103 years) who underwent transcatheter aortic valve implantation for severe symptomatic aortic stenosis in our center were retrospectively analyzed. Baseline demographic characteristics, cancer type, laboratory data, procedural data, and outcome data of the patients were collected. The primary outcome measure was all-cause mortality at 30 days and every six months up to maximally available follow-up. Follow-up was performed at 30 days, six months, and 12 months after the procedure and annually thereafter. Results: Of the patients, 36 had a cancer diagnosis-active (n=10) or cured (n=26). The most common types of cancer were colorectal (16.6%), prostate (13.8%), leukemia (11.1%), and bladder (11.1%) cancers. Post-procedural complication rates were similar between the two groups. No mortality was observed in the cancer group at one month of follow-up. During follow-up, seven patients died within one year due to non-cardiac reasons. Although mortality at one year was higher in cancer patients, it did not reach statistical significance (23.3% vs. 11.6%, respectively; p=0.061). The estimated cumulative survival rate was 71.0% in the non-cancer group and 58.3% in the cancer group. The multivariate Cox regression analysis revealed that cancer was independently associated with cumulative mortality after adjusting for age, sex, body mass index, and atrial fibrillation (p=0.008). Conclusion: Our study results show that transcatheter aortic valve implantation is safe and feasible in active cancer patients and cancer survivors with similar short-term and mid-term mortality and procedure-related complication rates, compared to non-cancer patients.Conference Object Citation Count: 1Comfort based investigation on historic libraries for user satisfaction and preservation of paper-based collections(IOP Publishing Ltd, 2021) Turhan, Çiğdem; Topan,C.; Turhan, Cihan; Goksal Ozbalta,T.; Gok en Akkurt,G.; Software Engineering; Energy Systems EngineeringHistoric libraries preserve cultural heritage values while housing rare manuscripts and paper-based collections. The collections in the libraries are deteriorated chemically, biologically and mechanically due to inappropriate indoor environment conditions such as temperature and relative humidity fluctuations and microbiological conditions. Apart from preserving vulnerable paper-based collections, accommodating of a considerable thermal comfort level for visitors is essential in historic libraries. The aim of this study is to analyse indoor environment of a historic library in terms of thermal comfort and preventive conservation of paper-based collections. Izmir National Library, built in 1933, is selected as a case study. Indoor air temperature, relative humidity and air velocity in the library were monitored with a one-year measurement campaign. Meanwhile, thermal comfort of the visitors was assessed with PMV/PPD indices and thermal sensation surveys. The results show that high chemical degradation risk is detected in the library while biological and mechanical degradations are in the low risk zone. On the other hand, 87% and 93% of the visitors feel thermally satisfied in heating and cooling seasons, respectively. © Published under licence by IOP Publishing Ltd.Article Citation Count: 0A Comparative Analysis of XGBoost and LightGBM Approaches for Human Activity Recognition: Speed and Accuracy Evaluation(Prof.Dr. İskender AKKURT, 2024) Sezen, Arda; Türkmen,G.; Türkmen, Güzin; Computer EngineeringHuman activity recognition is the process of automatically identifying and classifying human activities based on data collected from different modalities such as wearable sensors, smartphones, or similar devices having necessary sensors or cameras capturing the behavior of the individuals. In this study, XGBoost and LightGBM approaches for human activity recognition are proposed and the performance and execution times of the proposed approaches are compared. The proposed methods on a dataset including accelerometer and gyroscope data acquired using a smartphone for six activities. The activities are laying, sitting, standing, walking, walking downstairs, and walking upstairs. The available dataset is divided into training and test sets, and proposed methods are trained using the training set, and tested on the test sets. At the end of the study, 97.23% accuracy using the LightGBM approach, and 96.67% accuracy using XGBoost is achieved. It is also found that XGBoost is faster than the LightGBM, whenever the execution times are compared. © IJCESEN.Conference Object Citation Count: 3Comparison of conventional deep drawing, hydromechanical deep-drawing and high pressure sheet metal forming by numerical experiments(American Institute of Physics Inc., 2005) Tekkaya, Ahmet Eeman; Tekkaya,A.E.; Manufacturing EngineeringIncreasing use of new technologies in automotive and aircraft applications requires intensive research and developments on sheet metal forming processes. This study focuses on the assessment of sheet hydroforming, hydro-mechanical deep drawing and conventional deep-drawing processes by performing a systematic analysis by numerical simulations. Circular, elliptic, rectangular and square cross-section cups have been selected for the geometry spectrum. Within the range of each cross section, depth, drawing ratio and fillet radii have been altered systematically. St14 stainless steel has been used as the material throughout the study. The deformation behavior has been described by an elasto-plastic material model and all numerical simulations have been carried out by using a dynamic-explicit commercial finite element code. During the analyses each workpiece is produced by the three competing processes. The analyses results such as sheet thickness distribution, necking, forming of radii etc., are used for assessing the success of each forming process alternative. The analyses revealed that depending on the workpiece geometry and dimensional properties certain processes are preferable for obtaining satisfactory products. The process windows for each process have been established based on the analyzed parameters of the three different product geometries. This data is expected to be useful for selecting the appropriate production process for a given workpiece geometry. © 2005 American Institute of Physics.Conference Object Citation Count: 0A Comparison of Neural Network Approaches for Network Intrusion Detection(Springer international Publishing Ag, 2020) Peker, Serhat; Peker, Serhat; Software EngineeringNowadays, network intrusion detection is an important area of research in computer network security, and the use of artificial neural networks (ANNs) have become increasingly popular in this field. Despite this, the research concerning comparison of artificial neural network architectures in the network intrusion detection is a relatively insufficient. To make up for this lack, this study aims to examine the neural network architectures in network intrusion detection to determine which architecture performs best, and to examine the effects of the architectural components, such as optimization functions, activation functions, learning momentum on the performance. For this purpose, 6480 neural networks were generated, their performances were evaluated by conducting a series of experiments on KDD99 dataset, and the results were reported. This study will be a useful reference to researchers and practitioners hoping to use ANNs in network intrusion detection.Conference Object Citation Count: 2Comparison of the deep drawability of aluminum and steel using numerical simulation experiments(American Institute of Physics Inc., 2005) Tekkaya, Ahmet Eeman; Tekkaya,A.E.; Gür,C.H.; Manufacturing EngineeringSheet metal forming processes, especially deep drawing processes give diverse results by various materials. Extreme differences occur between steel sheets and aluminum sheets. The main causes of these differences are variances in micro- and macroscopic material properties, such as anisotropy. In this study, the behavior of two distinct materials, steel and aluminum alloy, during an axisymmetrical cup drawing operation has been studied numerically. For this purpose, finite element (FE) simulations of a simple cup drawing process, which was studied in the benchmarks of the NUMISHEET 2002 have been conducted using a commercial dynamic-explicit FE-analysis package. The materials analyzed have been 6111-T4 aluminum alloy and mild steel graded as deep drawing quality. Basic process parameters, which are the blank holding force and the lubrication condition, have been varied to obtain a "successful" product and the process windows for these two materials have been compared and investigated. Thickness distributions in the blank, force requirements for the process and product quality have been used for the basis of comparison. The results are also compared with an analytical model developed by Ramaekers. © 2005 American Institute of Physics.Conference Object Citation Count: 0Contemporary Research Trends in Mobile Learning(Springer Science and Business Media Deutschland GmbH, 2024) Ekin, Cansu Çiğdem; Algabsi,S.E.; Computer EngineeringThis study attempts to conduct a bibliometric analysis of the structure and development of mobile learning research. For this, 7829 publications included in the Elsevier SCOPUS database between 1984 and 2021 were examined using bibliometric analysis by identifying key research areas, most influential authors, co-authorship status of countries, and organizations. As a result of this study, most topics related to mobile learning were Computer Science. “Mobile Learning” was the most used keyword followed by “e-learning” and “higher education”. Top performing organizations were in Taiwan. Taiwan was the major contributor in m-learning publications’ co-citation with other co-authorship countries. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Article Citation Count: 19Coupled coincidence point results on generalized distance in ordered cone metric spaces(Springer, 2013) Karapınar, Erdal; Karapinar, Erdal; Mustafa, Zead; MathematicsIn this paper, we establish some coupled coincidence point results in the setting of partially ordered cone metric spaces via -distance. We also proved some related coupled common fixed point theorems for such mappings. Our results generalize, extend, and unify several well-known comparable results in the literature regarding this topic. We present some examples to illustrate the concepts and results.Article Citation Count: 0COVID-19 Infection in Peritoneal Dialysis Patients: \rA Comparative Outcome Study with Patients on \rHemodialysis and Patients without Kidney Disease(Aves, 2022) Kazancıoğlu, Rümeyza; Ozturk, Savas; Turgutalp, Kenan; Gürsu, Meltem; Arıcı, Mustafa; Oruç, Ayşegül; Ateş, KenanObjectives: There is limited data about coronavirus disease-19 (COVID-19) characteristics and results in peritoneal dialysis \r(PD) patients. This study aimed to investigate the characteristics and outcomes among PD patients and compare them with \rmatched hemodialysis (HD) patients and a control group without kidney disease.\rMethods: We included 18 PD patients and consecutive age- and gender-matched 18 HD and 18 patients without kidney \rdisease (control group) registered into the Turkish Society of Nephrology database including 1301 COVID-19 patients. We \rcompared demographic, clinical, radiological, laboratory data, and outcomes namely intensive care unit (ICU) admission, \rmechanical ventilation, mortality, and composite outcome (death and/or ICU admission).\rResults: ICU admission, mechanical ventilation, and mortality rates in PD patients (27.8%, 22.2%, and 22.2%, respectively) \rand the HD group (16.7%, 11.1%, and 16.7%, respectively) were higher than the control group (11.1%, 11.1%, and 5.6%, \rrespectively), but intergroup comparison did not reveal difference. A total of 11 (20.3%) patients had composite outcome \r(6 PD patients, 3 HD patients, and 2 patients in the control group). In Cox regression analysis, higher age and higher CRP level were related to increased risk of composite outcome. Adjusted rate of composite outcome in PD group was significantly higher than \rthe control group (P = .050). This rate was similar in HD and control groups (P = .30).\rConclusions: Combined in-hospital mortality and/or ICU admission of PD patients with COVID-19 was significantly higher than the control \rpatients. There is a need for careful surveillance of PD patients for infection signs and prompt treatment of COVID-19.Conference Object Citation Count: 0A decentralized on demand cloud CPU design with instruction level virtualization(Springer Verlag, 2018) Gökçay, Erhan; Software EngineeringCloud technology provides many advantages and provides many services over traditional computational models. Although the provided virtual services increase resource sharing and cost effectiveness of the system, each node in the system is still centralized. Different CPU and OS versions bring interoperability problems in data exchange between nodes. In most cases less powerful units are left outside the service area. These units can only be considered as consumers of the cloud system. A new service called Cloud CPU is described elsewhere where the cloud provides the computational background for the components of a virtual CPU and the computation is distributed over internet. The design is using all units connected to the internet and it achieves a massively parallel operation. In this paper, the design of Cloud CPU will be extended and description of services needed with the new architecture will be discussed. One of the new services needed is a multi-language compiler where the target language is not fixed as well as the source language. The job of the compiler is not using the cloud for execution but to distribute the computation depending on the provided instruction sets published by each node. The computation makes sense only when all units work together and there is a need to synchronize and connect all nodes included in a particular computation. The need for synchronization will be gone when the computation is finished. Therefore an on demand Cloud-OS service is needed for bookkeeping and synchronization. The need for the Cloud-OS is temporary and the on demand initiated Cloud-OS will be terminated when the computation is ended. © Springer International Publishing AG, part of Springer Nature 2018.