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Permanent URI for this collectionhttps://ada.atilim.edu.tr/handle/123456789/19

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Citation Count: 15
An accurate optical gain model using adaptive neurofuzzy inference system
(National Institute of Optoelectronics, 2009) Çelebi,F.V.; Altindag,T.; Computer Engineering
This paper presents a single, simple, new and an accurate optical gain model based on adaptive neuro-fuzzy inference system (ANFIS) which combines the benefits of Artificial Neural Networks (ANNs) and Fuzzy Inference Systems (FISs). The dynamic optical gain model results are in very good agreement with the previously published experimental findings.
Citation Count: 0
ANALYSING THE ALLOGRAPHIC NOTES IN THE TURKISH TRANSLATION OF AN ECOLOGICAL WORK: SILENT SPRING
(Konstantin Preslavsky University of Shumen, 2024) Hastürkoǧlu,G.; English Translation and Interpretation
Paratextual 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.
Citation Count: 0
An analysis of a special talent examination and the matter of quality;
(T.C. Milli Egitim Bakanligi, 2017) Ünver,E.; Textile and Fashion Design
Although there is an evaluation system, prepared by The Council of Higher Education, concerning special talent examinations, there are several differences in application. Changing grade rates, accepted in the current program, most universities' preselection systems, and some universities' enrolling all students or considering only special talent examinations are some of the basic differences. Data, gained through the analysis of the special talent examination, held at AU, a private university, reveal the matter of quality clearly. In the two dimensional matrix analysis of data in the 2015-2016 Academic Year special talent examination, it has been discovered that the results are parallel to the previous years' grades, no precautions have been taken to solve the quality matter and the same problem has been experienced in most private universities which sustain themselves with student tuitions, and have been holding ranking examinations instead of special talent examinations to fill their quota. The aim of this study is to provide the reader with numerical data for the analysis of the talent examination, in which The Council of Higher Education's evaluation system has been applied, by means of such scores of the candidates as the University Entrance Examination Grade, High School Grade Point Average, Special Talent Examination Grade, and the Placement Grade. The results show that students who do not have the competency required by the field of art and who are not able to develop desired behaviours in the field are enrolled at fine arts or art education departments.
Citation Count: 1
APPLICATIONS OF NON-UNIQUE FIXED POINT THEOREM OF CIRIC TO NONLINEAR INTEGRAL EQUATIONS
(Department of Mathematics and Computer Sciences, University of Prishtina, 2019) Sevіnіk-Adigіüzel,R.; Karapinar,E.; Erhan,I.; Mathematics
In this paper we discuss the application of the non-unique fixed point theorem of Cirić to nonlinear Fredholm integral equations. We establish an existence theorem for the solutions of such integral equations and apply the theorem to particular examples. © 2019 Universiteti i Prishtinës, Prishtinë, Kosovë.
Citation Count: 0
Approximation of Discontinuous Functions by q-Bernstein Polynomials
(Springer international Publishing Ag, 2016) Ostrovska, Sofia; Ozban, Ahmet Yasar; Mathematics
This 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.
Citation Count: 0
Architectural Competitions in a Maturing Milieu: Mapping the Agency of Actors
(Springer, 2023) Bican,N.B.; Guneri,G.; Architecture
The 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.
Citation Count: 14
Assessing cognitive complexity in Java-based Object-Oriented systems: Metrics and tool support
(Slovak Academy of Sciences, 2016) Crasso,M.; Mateos,C.; Zunino,A.; Misra,S.; Polvorín,P.; Computer Engineering
Software cognitive complexity refers to how demanding the mental process of performing tasks such as coding, testing, debugging, or modifying source code is. Achieving low levels of cognitive complexity is crucial for ensuring high levels of software maintainability, which is one of the most rewardful software quality attributes. Therefore, in order to control and ensure software maintainability, it is first necessary to accurately quantify software cognitive complexity. In this line, this paper presents a software metric to assess cognitive complexity in Object-Oriented (OO) systems, and particularly those developed in the Java language, which is very popular among OO programming languages. The proposed metric is based on a characterization of basic control structures present in Java systems. Several algorithms to compute the metric and their materialization in the Eclipse IDE are also introduced. Finally, a theoretical validation of the metric against a framework specially designed to validate software complexity metrics is presented, and the applicability of the tool is shown by illustrating the metric in the context of ten real world Java projects and relevant metrics from the well-known Chidamber-Kemerer metric suite.
Citation Count: 1
Assessing the role of style in literary translation
(Ovidius University, 2017) Aksoy,N.B.; English Translation and Interpretation
Literary translation and its characteristics have been a point of attraction in literary and academic circles for so many years. It has been generally accepted that since style is the most distinguishing element of a literary text, its recreation in translation is of utmost importance. Hence, in order to understand the hows and whys of literary translation, a sound and definite description of what a literary text is, is needed as a first step. A source text of literature does not have the same qualities as those of its translated version since the translation carries in itself the shadows of both the source and the target linguistic and literary elements. In order to overcome the challenges of literary translation then, it is a prerequisite for the translator to be a very good reader of literature in order to fully grasp all the literary, stylistic and cultural qualities of the source text, with all its intended meanings and effects. © 2017 Ovidius University. All rights reserved.
Citation Count: 16
An assessment of the software engineering curriculum in Turkish universities: IEEE/ACM guidelines perspective;
(FACTEACHEREDUCATION, 2011) Mishra,A.; Yazici,A.; Software Engineering
Software engineering (SE) education has been emerging as an independent and mature discipline. Accordingly, various studies are being done to provide guidelines for SE education curriculum design. This paper presents software engineering education evolvement in Turkey, present SE education scenario in different universities along with the significance of software technology parks in relevance to software engineering education. The objective of this paper is to provide an assessment of SE curriculum in Turkish Universities with respect to IEEE/ACM guidelines given in SEEK (2004). This study will provide a guideline to universities conducting an SE programme at undergraduate level to align their course curriculum with IEEE/ACM guidelines (SEEK, 2004).
Citation Count: 0
Association between Rutherford Classification and CHA₂DS₂-VASc, CHADS₂ and ASCVD Scores in Peripheral Artery Disease Patients
(Bmc, 2020) Karaduman, Bilge Duran; Ayhan, Huseyin; Keles, Telat; Bozkurt, Engin
Background 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.
Citation Count: 0
Asymmetric Effects of Credit Growth on the Current Account Balance: Panel Data Evidence
(Springer Science and Business Media B.V., 2019) Ekinci,M.F.; Omay,T.; Economics
Expanding 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.
Citation Count: 0
Automatic Boundedness of Adjointable Operators on Barreled VH-Spaces
(Springer Basel Ag, 2022) Ay, Serdar; Mathematics
We 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.
Citation Count: 2
BIOACTIVITY OF APATITE-WOLLASTONITE GLASS-CERAMICS PRODUCED BY MELTING CASTING
(World Scientific Publ Co Pte Ltd, 2013) Park, Jongee; Ozturk, Abdullah; Metallurgical and Materials Engineering
Glass-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.
Citation Count: 6
Bitcoin Market Price Analysis and an Empirical Comparison with Main Currencies, Commodities, Securities and Altcoins
(Springer Science and Business Media Deutschland GmbH, 2019) Pirgaip,B.; Dinçergök,B.; Haşlak,Ş.; Business
The 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.
Citation Count: 25
Blockage/shadowing and polarization measurements at 2.45GHz for interference evaluation between Bluetooth and IEEE 802.11 WLAN
(2001) Kara,A.; Bertoni,H.L.; Department of Electrical & Electronics Engineering
We present measurement results at 2.45 GHz to evaluate blockage shadowing and fading effects due to furniture and people next to terminals for short range indoor communication systems. The followings are the results: people crossing the link near to a terminal can cause fading up to 20dB which is more than furniture blockage measured of about 5-13dB depending on objects over the links, polarization coupling was also measured by using dual polarized antenna at receiving end, and coupling is higher for obstructed links, which suggests polarization diversity.
Citation Count: 1
Boundary Element Method for Optical Force Calibration in Microfluidic Dual-Beam Optical Trap
(Spie-int Soc Optical Engineering, 2015) Solmaz, Mehmet E.; Cetin, Barbaros; Baranoglu, Besim; Serhathoglu, Murat; Biyikh, Neemi; Manufacturing Engineering
The 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.
Citation Count: 0
Can computers read a text with stress?;
(2013) Uslu,I.B.; Demir,N.; Ilk,H.G.; Yilmaz,A.E.; Department of Electrical & Electronics Engineering
Today prosodic elements such as stress, intonation and melody can be examined through computer-assisted techniques. The identification and analysis of acoustic qualities provide significant clues as to the suprasegmental aspects of speech. In this study a system was designed to enable speech synthesis using a Turkish text. This synthesizer was used to analyze the melodic sructures of selected sentences. Any speech synthesized by a computer needs to be equipped with a melodic model so that it will sound natural to the ear. Within the context of this study a melodic model was also suggested, and the elements of this model were analyzed and discussed in terms of the rules of linguistics.
Citation Count: 0
A case study on measuring course learning outcomes in software engineering education;
(CEUR-WS, 2017) Karakaya,M.; Turhan,C.; Yazici,A.; Energy Systems Engineering; Computer Engineering; Software Engineering
One of the most critical outcomes in the MÜDEK accreditation system which plays an important role in the evaluation and assessment of the quality of education in higher education institutions is evaluating how much students have achieved the course outcomes. This study aims to compare two methods utilized to measure course outcomes in the Software Engineering department of Atilim University. In the most general sense, these two methods are based on indirect and direct measurement techniques. The results of the analysis show a high degree of differentiation between the direct measurement and indirect measurement results. In light of the results obtained, some recommendations have been offered for course outcome assessment methods to be developed in the scope of MÜDEK accreditation.
Citation Count: 5
Challenges of using software size in agile software development: A systematic literature review
(CEUR-WS, 2018) Hacaloglu,T.; Demirors,O.; Information Systems Engineering
Software size is a fundamental measure for software management. Size is used for a variety of purposes, such as benchmarking, normalization, and portfolio measurement, and it is frequently considered as the sole input of estimation. Estimations can be produced for various reasons; e.g., to predict effort, cost and duration of software development projects. There are different types of software size measures. Particularly in projects where agile methodologies are adopted, measurement becomes a significant challenge as it is perceived as a non-value-added task and records of tasks such as requirements identification are not always consistent. The difficulties of applying traditional size measurement techniques in agile contexts, however, do not diminish the need, and new methods and techniques are introduced to improve the manageability of the agile projects. In this paper, we discuss estimation and measurement approaches in relation with ―software size in agile contexts. Based on this review, we present the perceptions of software size and related challenges, such as misinterpretation of size, difficulties in implementation, and acceptability of the measurement processes. We anticipate that providing a baseline for the state of software size measures in agile contexts and presenting related challenges, particularly in terms of its acceptability by practitioners can shed light on the development of new techniques. © 2018 CEUR-WS. All rights reserved.
Citation Count: 3
Clinical outcomes after transcatheter aortic valve implantation in active cancer patients and cancer survivors
(Baycinar Medical Publ-baycinar Tibbi Yayincilik, 2021) Karaduman, Bilge Duran; Ayhan, Huseyin; Keles, Telat; Bozkurt, Engin
Background: 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.

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