WoS İndeksli Yayınlar / WoS Indexed Publications

Permanent URI for this collectionhttps://hdl.handle.net/11413/6359

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Now showing 1 - 20 of 142

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A comparative study of the yellow dent and purple flint maize kernel components by Raman spectroscopy and chemometrics
(2019-05-15) Kabuk, Hayrunnisa Nur; Kaplan, Ekin Su; Halimoğlu, Gökhan; Fausto, Rui; ILDIZ, GÜLCE ÖĞRÜÇ
In this investigation the potential of micro-Raman spectroscopy, coupled to a simple, standard chemometric method (principal component analysis, PCA), as a fast, cheap, field method to investigate maize kernel components (endosperm, germ and peel) is demonstrated. Particular emphasis was given to the determination of the relative protein and amylose/amylopectin contents in maize endosperm of yellow dent and purple flint corn species, the two major maize varieties produced in Turkey. It is shown that the studied yellow dent corn type has a comparatively larger content of protein (3.4%) and a higher amylopectin/amylose ratio in the endosperm than the studied purple flint variety (a 11% decrease of amylopectin was found in going from the studied yellow dent to the purple flint corn), while the germs of the two species differ mostly by the presence of a slightly larger amount of starch in the case of the yellow dent corn, the oil composition of both species being identical within the resolution of the used method of analysis. The spectra of the maize peels reveal essentially the presence of cellulose and lignin in similar amounts in the two types of corn. (C) 2019 Elsevier B.V. All rights reserved.
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A comparison of Gordon's functional health patterns model and standard nursing care in symptomatic heart failure patients: A randomized controlled trial
(W.B. Saunders, 2020-06) Türen, Sevda; Enç, Nuray
Background Heart failure (HF) is associated with poor quality of life and increased morbidity and mortality. Aim This study aimed to investigate effect of application of Gordon's functional health pattern (FHP) model in nursing care of symptomatic HF patients on quality of life, morbidity and mortality in the post-discharge 30-day. Methods This is a prospective randomized controlled study conducted in a single center. Experimental group received nursing care planned in accordance with Gordon's FHP model. 60 control and 60 experimental HF patients were included in the study. In the control group nursing care was given according to the standard protocol of the hospital whereas in the experimental group nursing care was given in accordance with Gordon's FHP model. Patients in both groups were followed up after discharge at 30th day. Results Mean Minnesota Living with Heart Failure Questionnaire score improved significantly in the experimental group compared to the control group at 30th day (40.2 ± 23.5 vs 62.3 ± 22.9 respectively, p = 0.001). Seven patients (11.7%) in the experimental group and 17 patients (28.3%) in the control group were readmitted in the post discharge 30-day (p = 0.02). Kaplan-Meier survival curve analysis revealed significant difference in 30-day event free survival rates between groups (log-rank p = 0.31). Conclusion Application of Gordon's FHP model in the nursing care of HF patients was associated with significantly improved quality of life, and reduced hospital readmission rates at 30th day. This was the only independent predictor of 30-day event free survival.
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A novel fuzzy TOPSIS method using emerging interval-valued spherical fuzzy sets
(2019-06-03) Kahraman, Cengiz; GÜNDOĞDU, FATMA KUTLU
All the extensions of ordinary fuzzy sets with three-dimensional membership functions such as intuitionistic fuzzy sets, second type intuitionistic fuzzy sets (or Pythagorean fuzzy sets) and neutrosophic sets aim at defining the judgments of decision makers/ experts with a more detailed description. As a new extension of intuitionistic fuzzy sets of second type, the emerging spherical fuzzy sets (SFS) have been proposed by Kutlu Gundogdu and Kahraman (2019b). In spherical fuzzy sets, the sum of membership, non-membership and hesitancy degrees must satisfy the condition0 <= mu(2) + v(2) + pi(2) <= 1 in which these parameters are assigned independently. SFS is an integration of Pythagorean fuzzy sets and neutrosophic sets. In this paper, novel interval-valued spherical fuzzy sets are introduced with their score and accuracy functions; arithmetic and aggregation operations such as interval-valued spherical fuzzy weighted arithmetic mean operator and interval-valued spherical fuzzy geometric mean operator. Later, interval-valued spherical fuzzy sets are employed in developing the extension of TOPSIS under fuzziness. Then, we use the proposed interval-valued spherical fuzzy TOPSIS method in solving a multiple criteria selection problem among 3D printers to verify the developed approach and to demonstrate its practicality and effectiveness. A comparative analysis with single-valued spherical TOPSIS is also performed.
Open Access
A novel spherical fuzzy analytic hierarchy process and its renewable energy application
(2020-03-01) Kutlu Gündoğdu Fatma; Kahraman, Cengiz
The extensions of ordinary fuzzy sets such as intuitionistic fuzzy sets, Pythagorean fuzzy sets, and neutrosophic sets, whose membership functions are based on three dimensions, aim at collecting experts’ judgments more informatively and explicitly. In the literature, generalized three-dimensional spherical fuzzy sets have been introduced by Kutlu Gündoğdu and Kahraman (J Intell Fuzzy Syst 36(1):337–352, 2019a), including their arithmetic operations, aggregation operators, and defuzzification operations. In this paper, our aim is to extend classical analytic hierarchy process (AHP) to spherical fuzzy AHP (SF-AHP) method and to show its applicability and validity through a renewable energy location selection example and a comparative analysis between neutrosophic AHP and SF-AHP.
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A novel VIKOR method using spherical fuzzy sets and its application to warehouse site selection
(2019) Kahraman, Cengiz; GÜNDOĞDU, FATMA KUTLU
The extensions of ordinary fuzzy sets such as intuitionistic fuzzy sets (IFS), Pythagorean fuzzy sets (PFS), and neutrosophic sets (NS), whose membership functions are based on three dimensions, aim at collecting experts' judgments more informatively and explicitly. In the literature, generalized three-dimensional spherical fuzzy sets have been developed by Kutlu Gundogdu and Kahraman (2019), including their arithmetic operations, aggregation operators, and defuzzification operations. Spherical Fuzzy Sets (SFS) are a new extension of Intuitionistic, Pythagorean and Neutrosophic Fuzzy sets, a SFS is characterized by a membership degree, a nonmembership degree, and a hesitancy degree satisfying the condition that their squared sum is equal to or less than one. These sets provide a larger preference domain in 3D space for decision makers (DMs). In this paper, our aim is to extend classical VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method to spherical fuzzy VIKOR (SF-VIKOR) method and to show its applicability and validity through an illustrative example and to present a comparative analysis between spherical fuzzy TOPSIS (SF-TOPSIS) and SF-VIKOR. We handle a warehouse location selection problem with four alternatives and four criteria in order to demonstrate the performance of the proposed SF-VIKOR method.
Open Access
A pipeline for adaptive filtering and transformation of noisy left-arm ECG to its surrogate chest signal
(MDPI AG, 2020-05) Tanneeru, Akhilesh; Lee, Bongmook; Misra, Veena; Mohaddes, F.; Zhou, Y.; Lobaton, E.; AKBULUT, FATMA PATLAR
The performance of a low-power single-lead armband in generating electrocardiogram (ECG) signals from the chest and left arm was validated against a BIOPAC MP160 benchtop system in real-time. The filtering performance of three adaptive filtering algorithms, namely least mean squares (LMS), recursive least squares (RLS), and extended kernel RLS (EKRLS) in removing white (W), power line interference (PLI), electrode movement (EM), muscle artifact (MA), and baseline wandering (BLW) noises from the chest and left-arm ECG was evaluated with respect to the mean squared error (MSE). Filter parameters of the used algorithms were adjusted to ensure optimal filtering performance. LMS was found to be the most effective adaptive filtering algorithm in removing all noises with minimum MSE. However, for removing PLI with a maximal signal-to-noise ratio (SNR), RLS showed lower MSE values than LMS when the step size was set to 1 × 10−5. We proposed a transformation framework to convert the denoised left-arm and chest ECG signals to their low-MSE and high-SNR surrogate chest signals. With wide applications in wearable technologies, the proposed pipeline was found to be capable of establishing a baseline for comparing left-arm signals with original chest signals, getting one step closer to making use of the left-arm ECG in clinical cardiac evaluations.
Open Access
A proposal for the definition of housing with EXPRESS
(2019-07) Bayer, Semih; TÜRKYILMAZ, EMRAH
This article describes how to use the EXPRESS language for the definition of an architectural product. To make this definition, EXPRESS language and ISO 10303 standards examined. A housing project in the BIM environment described as an example by EXPRESS. The results show that it is possible to make the desired calculations about the house with EXPRESS. The definition made with a project that is still in the design phase can determine whether the project provides the desired spatial conditions by making any calculations. Thus, quality and cost-effective projects can obtain.
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A tree learning approach to web document sectional hierarchy extraction
(2010) Pembe, F.Canan; Göngör, Tunga
There is an increasing availability of documents in electronic form due to the widespread use of the Internet. Hypertext Markup Language (HTML) which is mostly concerned with the presentation of documents is still the most commonly used format on the Web, despite the appearance of semantically richer markup languages such as XML. Effective processing of Web documents has several uses such as the display of content on small-screen devices and summarization. In this paper, we investigate the problem of identifying the sectional hierarchy of a given HTML document together with the headings in the document. We propose and evaluate a learning approach suitable to tree representation based on Support Vector Machines.
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A Wearable Device for Virtual Cyber Therapy of Phantom Limb Pain
(2018-09) Tarakçı, Ela; Aydın, Muhammed; Zaim, Abdul Halim; AKBULUT, AKHAN; AŞCI, GÜVEN; 285689; 116056; 101760; 176402; 8693
Phantom limb pain (PLP) is the condition most often occurs in people who have had a limb amputated and it is may affect their life severely. When the brain sends movement signals to the phantom limb, it returns and causes a pain. Many medical approaches aim to treat the PLP, however the mirror therapy still considered as the base therapy method. The aim of this research is to develop a wearable device that measures the EMG signals from PLP patients to classify movements on the amputated limb. These signals can be used in virtual reality and augmented reality environments to realize the movements in order to reduce pain. A data set was generated with measurements taken from 8 different subjects and the classification accuracy achieved as 90% with Neural Networks method that can be used in cyber therapies.This type of therapy provides strong visuals which make the patient feel he/she really have the limb. The patient will have great therapy session time with comparison to the other classical therapy methods that can be used in home environments.
Open Access
Aging-related diseases and autophagy
(2016) Çoker Gürkan , Ajda; Palavan Unsal, Narcin; ARISAN, ELİF DAMLA; YERLİKAYA, PINAR OBAKAN
Autophagy is fundamental, evolutionary conserved physiological process at molecular level which targets long-lived cytosolic proteins and organelles to be recycled through lysosomal degradation. Diminished autophagic activity caused cellular stress in many organisms following aging, and inhibition of autophagy in model organisms causes degenerative changes and pathologic diseases observed with high incidence ratio generally in older ages. Consequently the delayed senescence or increased longevity in model organisms often stimulate autophagy, and autophagy inhibition compromises anti-aging effects. The cytoprotective function of autophagy is presented in various human diseases such as lung, liver, cardiovascular diseases, neurodegeneration, myopathies, cancer, stroke, infections and metabolic diseases which are found associated with autophagic targets. These pathologies are defined with their age-dependent characteristics, is not fully understood that how autophagy network regulates metabolism and may cause diseases in age-related manner. In this book chapter, we are going to discuss the autophagy and aging relationship in three different parts. In the first section autophagy and aging relationship is going to be presented through explaining responsible signalling network. The autophagy and age-related neurological disorders, genetic basis of age-dependent diseases and the functional role of autophagy is going to be discussed in the second and third part of the chapter.
Open Access
An analysis of accessibility in architectural design in terms of wheel chair users
(2018) İskender, Emine; TÜRKYILMAZ, EMRAH
Although legal rights of people with disabilities are known in Turkey, studies are insufficient on rearrangement of built environment in the fashion to serve physical accessibility of people with disabilities. This study aims to review legal rights of individuals with disabilities, within the current system in Turkey and to introduce rearrangements which enable indoor accessibility for people with disabilities. To that end, minimum requirements to enable physical indoor accessibility for individuals with disabilities were identified by examining the standards set forth by TS 9111 The Requirements of Accessibility in Buildings for People with Disabilities and Mobility Constraints, and those requirements were analyzed in terms of selected model projects. Within the scope of this research, indoor accessibility for individuals with disabilities who use wheelchair was addressed, and analyses on model projects were performed by checking requirements of wheelchair users. Following the analyses, accessibility of selected model projects was determined, and deductions were made on how designing process must be performed by taking minimum requirements into consideration.
Open Access
An analysis of user satisfaction in relation with sense of belonging in high income housing: Atakoy case
(2019) Barutçular, Tülin; DOSTOĞLU, NESLİHAN
Housing choice and satisfaction are among the most important factors for users in housing areas. Istanbul Atakoy is one of the areas where housing satisfaction is at the highest level in many respects. This area, which has expanded over time with new buildings, is still very instructive for researchers, although various studies on satisfaction have been carried out in the past. In this study, the aim is to obtain new data by means of Atakoy Konaklari, which was completed in 2006 and has been in use for twelve years, and Yali Atakoy which was completed in 2016 and has been in use for two years. Satisfaction and sense of belonging in Atakoy are intertwined concepts. While Neighborliness is seen as a value that is important, it also affects settlement decisions. In this respect, Atakoy is a very special region. A phenomenological approach has been adopted in the research and by means of in-depth interviews, taking the answers of the users directly, the concepts of neighborhood, neighborliness, satisfaction and belonging have been interpreted.
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An entropy-based design evaluation model for architectural competitions through multiple factors
(MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, 2019-11) Şener, Sinan Mert; GÜZELCİ, ORKAN ZEYNEL
Generally, the evaluations in architectural competitions are based on quality where many criteria are involved. Additionally, many other inter-related criteria, identified by the members of the jury, emerge during jury evaluation. Hence, a great number of criteria play a role, with varying degrees of importance, in the evaluation process. The order of importance and weights of criteria (factors) in the evaluation phases are not fixed and differ according to the approaches of the jury members. The objective of this study is to investigate whether subjective means of evaluation can be associated with an objective and computable evaluation model. Entropy, an objective method used to measure disorder in buildings, offers significant potential in enhancing the comprehensibility of subjective tendencies in jury evaluation of architectural competitions. Previous studies have identified an inverted U relationship between entropy and subjective responses based on single and multiple factors. The Entropy-Based Design Evaluation Model (EBDEM), a method, analyzes the level of objectivity in jury evaluation and questions the predictability of evaluations through examining the relationship between the entropy values of projects and success outcomes. The Weighted Overall Entropy (WOE) was obtained by multiplying multiple factor entropy values with different weight coefficients with the purpose of ranking each project on an inverted U graph similar to jury results. The relationship between WOE values calculated and the ranking of the projects in the competitions were investigated. The findings within this study indicate that there are no relationships between single factor entropy values and ranking of the projects. Additionally, it was found that WOE values calculated for single-competition compared to multiple-competitions were more similar to jury evaluation results.
Open Access
An Examination of cartoons watched by preschoolers in terms of gender stereotypes: The case of Niloya
(2017) Ay, Aylin; Saray, Filiz; Kılıç, İsmihan; YAĞAN, SEVCAN
This is a basic interpretive qualitative research as it aims to examine the cartoon named Niloya in terms of the gender stereotypes. 50 episodes of the cartoon were watched and the data collected were subjected to a content analysis. It has been emerged that the characters found in the cartoons have proper behaviors and appearances in terms of gender stereotypes and that the cartoon contributed to the production of gender stereotypes. It was seen in the cartoon that housework such as cooking, cleaning, childrearing is always done by the mother and work such as driving, gardening and keeping the animals is done the father and the grandfather. In the episodes watched, it was observed that female characters wear pink and purple dresses while male characters have colors like blue, yellow, green on their clothes. It was also found that play and toy preferences of girls and boys in the cartoon are conformed with the gender stereotypes. When considering that majority of children watch cartoons and identify themselves with this character, it can be said that the problem of gender inequality needs to be solved in the cartoon and the messages within the content should be reorganized to achieve women-men equality.
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Analysis of linear lung models based on state-space models
(Elsevier Ireland Ltd., 2020-01) Saatçi, Ertuğrul; Akan, Aydın; SAATÇI, ESRA
Background and Objectives: Linear parametric respiratory system models have been used in the model-based analysis of the respiratory system. Although there are studies exploring the physiological correctness and fitting accuracy of the models, they are not analysed in terms of interaction between parameters and dynamics of the model. In this study we propose to use state-space modelling to yield the time-varying nature of the system incorporated by the parameters. Methods: We tested controllability, observability and stability characteristics of the equation of motion, 2-comp. parallel, 2-comp. series, viscoelastic, 6-element and mead models while using the parameters given in the literature. In the sensitivity analysis we proposed to use dual Desensitized Linear Kalman Filter (DKF) and Extended Kalman Filter (EKF) method. In this method, state error covariance revealed the parameter sensitivities for each model. Results: Results showed that all models, except 2-comp. parallel and mead models, are both controllable and observable models. On the other hand all models, except mead model, are stable models. Regarding to the sensitivity analysis, dual DKF - EKF method estimated states of the models successfully with a low estimation error. Sensitivity analysis results showed that airway parameters have higher effects on the state estimation than the other parameters have. Conclusion: We proved that state-space evaluation of the previously proposed parametric models of the respiratory system led us to quantitative and qualitative assessments of the respiratory models. Moreover parameter values found in the literature have different effects on the models. (C) 2019 Elsevier B.V. All rights reserved.
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Analysis of the use of computational intelligence techniques for air-conditioning systems: A systematic mapping study
(SAGE PUBLICATIONS LTD, 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND, 2019) Çakır, Mustafa; AKBULUT, AKHAN; ÖNEN, YUSUF HATAY
In our systematic mapping study, we examined 289 published works to determine which intelligent computing methods (e.g. Artificial Neural Networks, Machine Learning, and Fuzzy Logic) used by air-conditioning systems can provide energy savings and improve thermal comfort. Our goal was to identify which methods have been used most in research on the topic, which methods of data collection have been employed, and which areas of research have been empirical in nature. We observed the rules for literature reviews in identifying published works on databases (e.g. the Institute of Electrical and Electronics Engineers database, the Association for Computing Machinery Digital Library, SpringerLink, ScienceDirect, and Wiley Online Library) and classified identified works by topic. After excluding works according to the predefined criteria, we reviewed selected works according to the research parameters motivating our study. Results reveal that energy savings is the most frequently examined topic and that intelligent computing methods can be used to provide better indoor environments for occupants, with energy savings of up to 50%. The most common intelligent method used has been artificial neural networks, while sensors have been the tools most used to collect data, followed by searches of databases of experiments, simulations, and surveys accessed to validate the accuracy of findings.
Open Access
Application of the subordination principle to the multivalent harmonic mappings with shear construction method
(2011-06) Yavuz Duman, Emel; Özkan, H. Esra; POLATOĞLU, YAŞAR
The harmonic function in the open unit disc D = (z is an element of C vertical bar z vertical bar < 1} can be written as a sum of an analytic and an anti-analytic function. f = h(z) + g(z), where h(z) and g(z) are analytic functions in D, and are called the analytic part and co-analytic part of f, respectively. One of the most important questions in the study of the classes of such functions is related to bounds on the modulus of functions (growth) or modulus of the derivative (distortion), because the growth theorem and distortion theorem give the compactness of the classes of these functions. In this paper we consider both of these questions with the shear construction method. (C) 2010 Elsevier Ltd. All rights reserved.
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Applying analytic hierarchy process to the evaluation of double skin facades
(2019-01) Önder, Naime; BOSTANCIOĞLU, ESRA; 108365
A double skin facade (DSF) mediates the interaction between the outdoor environment and internal space, while also providing architectural flexibility to the building design. Designers and builders should evaluate DSF alternatives before selection of a design solution for a specific project context. In this study, Analytic Hierarchy Process (AHP) was used to evaluate questionnaire responses from experienced professionals. DSF alternatives and evaluation criteria were identified from the literature review and the hierarchical structure was determined based on the alternatives and the evaluation criteria. The evaluation criteria were used to measure and evaluate DSF. Experienced professionals evaluated criteria and DSF alternatives. The findings of this study provide designers and builders with valuable insights into DSF evaluation factors and DSF alternatives. The results may help designers and builders with the selection of facade systems.
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Approaches to othered identities and spaces in French cinema
(2018) Erensoy, Scommairin Fulya
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Assessment of seismic behaviour and safety of a masonry heritage
(Selçuk Üniv, Meram Tıp Fakultesi, 2019-12) TÜRK, AHMET MURAT
Turkey is a highly seismic country where numerous major earthquakes have devastated or damaged the existing historic structures owing to there is a large number of historical structures, mostly religious ones like mosques, and churches. The minarets are essential parts of mosques and there are many of these historic structures across the country which were built since Seljuq Empire started to rule the Anatolia and followed by Ottomans. As Turkey located in a highly active seismic zone, the possible damage of the minarets, the tallest part of the mosques, should be examined and the safety measures, in terms of seismic retrofit, should be considered. It is engineering communities' responsibility to satisfy the longevity of these existing heritages by the help of science and knowledge. To realize this objective, a case study is planned which addresses the problem of seismic capacity of a stone masonry minaret as a part of the architectural heritage in Istanbul, and a typical historical mosque is chosen. Mathematical model of the minaret is prepared in order to obtain possible deformation profile, lateral displacements, free vibration modes and most likely failure modes under seismic excitation by using response spectrum analysis. Most recent developments in the in-situ testing of structures and computational procedures for structural analysis have made reaching to the important results about the behaviour of the old masonry structures. The numerical results have shown that the greatest damage accumulated near the shoe region and the lower part of the shaft. The evaluation of these results is promising in terms of seismic safety of these heritages with minimized intervention on the structure without compromising the authentic view and function.

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