Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Gul, Muhammet(86)
- Güler, Ömer(69)
- Akkurt, Nevzat(68)
- Baskonus, Haci Mehmet(53)
- Tekin, H.O.(52)
- Bulut, Hasan(50)
- ALMisned, Ghada(49)
- Serdar, Osman(43)
- Yucesan, Melih(43)
- Paksoy, Mehmet Yavuz(42)
- Yildirim, Numan(41)
- Zengin, Gokhan(40)
- Yildirim, Nuran Cikcikoglu(39)
- Ince, Muharrem(37)
- Kocabaş, Mehmet(37)
- Celik, Erkan(35)
- Benzer, Fulya(33)
- Sulaiman, Tukur Abdulkadir(29)
- Aslan, Naim(27)
- Can, Erkan(27)
- Kutlu, Banu(27)
- Kök, Mediha(27)
- Tanyol, Mehtap(27)
- Danabas, Durali(26)
- Kutluyer, Filiz(26)
- Özkul, İskender(26)
- Ates, Mehmet(25)
- Yildirim, Ozal(25)
- Onat, Onur(23)
- Topal, Murat(23)
- Demir, Veysel(22)
- Erten, Fusun(22)
- Guler, Omer(22)
- Say, Yakup(22)
- Yaman, Mehmet(22)
- Alataş, Mevlüt(21)
- Güler, Seval Hale(21)
- Çimen, Okay(21)
- Baykal, Duygu Sen(20)
- Mete, Suleyman(20)
Yayınlar
- MakaleYalnız künye2017Scopus SJRQ1Hough Transform as a quality test tool for electron beam lithography
Göktaş, Oktay; Işık Göktaş, Nebile
In this study, we use Hough Transform as a test tool to investigate the quality of the electron beam lithography. A graphene like thin film of metal layer is fabricated on top of GaAs substrate by electron beam lithography. Hough Transform is applied to the SEM images of the fabricated pattern and the quality of the lithography process is quantitatively investigated. All the existing critical dimensional measurements on the SEM images which would otherwise take several days are done in a single step. The power and potential use of Hough Transform for the SEM image inspection especially for the quality test of nano-patterning processes is demonstrated.
AtıfScopus3WoS3OpenAlex4
İncele - MakaleYalnız künye2017Scopus SJRQ1Applicability of ohmic heating assisted vacuum evaporation for concentration of sour cherry juice
Sabanci, Serdal; Icier, Filiz
Sour cherry juice having total soluble solids (TSS) of 19.2% was evaporated up to 65% TSS at vacuum (gauge pressure of 580 mm-Hg) by applying ohmic heating at three different voltage gradients (10–14 V/cm). Total process times were determined as 40, 55, 75, and 85 min for 14 V/cm, 12 V/cm, and 10 V/cm, and vacuum evaporation (VE), respectively. The change of moisture content during ohmic assisted vacuum evaporation and VE processes were investigated by seven different empirical models. The best fitting model was Midilli model for three different voltage gradients and VE. The electrical conductivity values at different voltage gradients varied between 0.41 and 1.13 S/m for different TSS contents. The changes of EC values were examined in detail for three different regions; heating up period, first evaporation period, and second evaporation period. EC increased until a critical % TSS content (32% TSS), then remained constant for certain time (until 45% TSS) depending on voltage gradient, and then it had tendency to decrease. Ohmic heat generation increased sharply during heating period, then decreased dramatically during evaporation periods. It is recommended that ohmic heating could be alternatively used as the heat source to shorten the process times of vacuum evaporation applied for concentration of fruit juices.
AtıfScopus91WoS77OpenAlex93İncele - MakaleAçık Erişim2017Scopus SJRQ2Big social network data and sustainable economic development
Can, Umit; Alatas, Bilal
New information technologies have led to the rapid and effective growth of social networks. The amount of data produced by social networks has increased the value of the big data concept, which is one of the popular current phenomena. The immediate or unpredictable effects of a wide array of economic activities on large masses and the reactions to them can be measured by using social media platforms and big data methods. Thus, it would be extremely beneficial to analyze the harmful environmental and social impacts that are caused by unsustainable business applications. As social networks and big data are popular realms currently, their efficient use would be an important factor in sustainable economic development. Accurate analysis of people's consumption habits and economic tendencies would provide significant advantages to companies. Moreover, unknown consumption factors that affect the economic preferences of individuals can be discovered and economic efficiency can be increased. This study shows that the numerous solution opportunities that are provided by social networks and big data have become significant tools in dynamic policy creation by companies and states, in solving problems related to women's rights, the environment, and health.
AtıfScopus42WoS34OpenAlex50İncele - MakaleYalnız künye2017Scopus SJRQ1Passive flow control in the near wake of a circular cylinder using attached permeable and inclined short plates
Ozkan, Gokturk M.; Firat, Erhan; Akilli, Huseyin
The main objective of this study is to assess the effectiveness of attached permeable plates in suppressing nominally two-dimensional vortex shedding from a fixed cylinder. The permeable plate along the entire span of the cylinder was made of a chrome-nickel screen and was attached normal to the cylinder surface. The main parameters of the study are porosity of the permeable plate, β, and the plate angle of the cylinder-plate arrangement, θ, with respect to the freestream. Experiments were performed using Particle Image Velocimetry (PIV) and Flow Visualization Techniques. Additionally, drag force measurements were carried out in a wind tunnel to analyze the effects of permeable plates on drag coefficient of the circular cylinder. The results revealed that the use of a permeable plate successfully suppresses the vortex shedding downstream of the circular cylinder by reducing the velocity fluctuations in the wake, elongating the vortex formation region further downstream and attenuating the vortex shedding frequency. The porosity values of β=0.4 and 0.5 with plate angles in the range of 35°≤θ≤90° were found to be effective on suppressing the vortex shedding. Furthermore, both the drag coefficients of the cylinder-plate arrangement and the <TKE>maxwere reduced almost for all porosity ratios for θ<30°.
AtıfScopus63WoS55OpenAlex59İncele - MakaleYalnız künye2017Scopus SJRQ3Macroinvertebrate composition in the metarhithral zones of the Munzur and Pülümür rivers: A preliminary study
Gültekin, Zuhal; Aydin, Rahmi; Winkelmann, Carola
The aim of this work was the determination of the macroinvertebrate community in the metarhithral zones of the Munzur and Pulumur rivers. This is the first documented research on macroinvertebrates in the metarhithral zone of the Munzur and Pulumur rivers in the region of the city of Tunceli. In total, 30 taxa of 9 orders of benthic invertebrates were recorded at the four sampling sites. Larvae of Taeniopteryx caucasica (Plecoptera), Oligoneuriella baskale, and Ecdyonurus dispar (Ephemeroptera) were recorded for the first time in the province of Tunceli.
AtıfScopus10WoS6İncele - MakaleYalnız künye2017Scopus SJRQ2Novel archetypes of new coupled Konno–Oono equation by using sine–Gordon expansion method
Yel, Gülnur; Baskonus, Haci Mehmet; Bulut, Hasan
In this manuscript, we investigate the analytical solutions of the new coupled Konno–Oono equation by using the sine–Gordon expansion method. We successfully obtained some new soliton solutions to this model. We plot the 2D and 3D surfaces of all the found soliton solutions in this study. The Wolfram Mathematica 9 is used in performing all the computations in this study.
AtıfScopus99WoS93İncele - MakaleYalnız künye2017Scopus SJRQ2Concentration of apple juice using a vacuum microwave evaporator as a novel technique: Determination of quality characteristics
Bozkir, Hamza; Baysal, Taner
This study was evaluated the use of a novel concentration technique, a vacuum microwave evaporator (VME) in the production of clear apple juice concentrate and the investigation of its effects on the quality characteristics of the juice. The optimum processing conditions of the VME for apple juice concentrate were determined using response surface methodology. The apple juice concentrate was produced by VME, a rising film evaporator (RFE), and a rotary evaporator (RE) at the optimum process conditions. The results show that the evaporation rate of VME was three times higher than that of RE and was two times higher than that of RFE. VME produced minimum changes in the color of the apple juices (L*, a*, b*, ΔE, Hue°, and ΔC) compared to RE and RFE. VME was also found the best group that preserved the quality characteristics of apple juices (TTA, NEBI, and TPC) compared with conventional evaporation methods. Practical applications: Microwave heating provides volumetric heating of food. The concentration carried out quickly with the combined system, microwave and vacuum, which allows mass and energy transfer quickly at a short time. The physicochemical, and biochemical properties of the concentrated apple juices processed using VME were found to be better than those of the juices produced using the other conventional methods. The obtained data can be useful for optimization of fruit juice concentrate production in industrial concentration processes.
AtıfScopus62WoS59OpenAlex70İncele - MakaleAçık Erişim2017Scopus SJRQ2On the new soliton and optical wave structures to some nonlinear evolution equations
Bulut, Hasan; Sulaiman, Tukur Abdulkadir; Baskonus, Haci Mehmet
In this study, with the aid of the Wolfram Mathematica software, the powerful sine-Gordon expansion method is utilized to search for the solutions to some important nonlinear mathematical models arising in nonlinear sciences, namely, the (2 + 1) -dimensional Zakharov-Kuznetsov modified equal width equation, the cubic Boussinesq equation and the modified regularized long wave equation. We successfully obtain some new soliton, singular soliton, singular periodic waves and kink-type solutions with complex hyperbolic structures to these equations. We also present the two- and three-dimensional shapes of all the solutions obtained in this study. We further give the physical meaning of all the obtained solutions. We compare our results with the existing results in the literature.
AtıfScopus54WoS51OpenAlex53İncele - MakaleYalnız künye2017Role of some selected fungi cultures on bioremediation of herbicide chlorsulfuron
Ergüven, Gökhan Önder
This study aims for the performance of certain soil fungi for bioremediation of chlorsulfuron herbicide solutions on chemical oxygen demand (COD), biochemical oxygen demand (BOD), total organic carbon (TOC) and active ingredient parameters under agitated culture conditions. Soil fungi were isolated from chlorsulfuron-free soil in an agricultural field. Based on the laboratory experiment results, A. Alternata had the highest removal rate for all parameters about 5-6 days. Additionally, it was observed that M. chlamydosporia showed the lowest COD and active ingredient removal efficiency. On the other hand, TOC removal rates were similar with P. simplicissimum, M. chlamydosporia and S. chartarum species nearly 53%. It was demonstrated that, there were a suitable isolated fungi species for bioremediation of chlorsulfuron in agricultural soil media. It was conducted that all isolated fungi demonstrated up to 50% ability to degrade chlorsulfuron on important environmental parameters.
AtıfScopus3İncele - MakaleAçık Erişim2017Scopus SJRQ4Comparison of critical listening proficiency of teacher candidates in terms of several variables; [Öğretmen adaylarının eleştirel ninleme yeterliklerinin çeşitli değişkenler açısından karşılaştırılması]
Kazu, Hilal; Demiralp, Demet
Purpose: The research has been designed to determine the level of critical listening proficiency of the teacher candidates. It aims at finding answers to the following questions: (1) What is the level of critical listening proficiency of teacher candidates? (2) Do the teacher candidates’ levels of critical listening proficiency indicate a significant difference in terms of gender, department, or university exam score variables? Research Methods: In this research, the relational screening model, one of the general screening models, has been utilised. Through this model, the pre-service teachers’ levels of critical listening proficiency are determined, and these levels are described separately in terms of several variables (such as gender, department, university entrance exam score type). An easily accessible sampling model has been used in sample selection. The sample of the study consists of 672 teacher candidates studying as senior students in their own. The research data were obtained by using the Critical Listening Proficiency Scale, prepared by the researchers. Findings: The findings indicated that the teacher candidates generally have a high level of critical listening proficiency. The teacher candidates in the departments of Turkish and Arts Teaching demonstrated much higher levels of critical listening proficiency in terms of ‘attention-preparation’ proficiency than the others. Furthermore, the teacher candidates with the verbal score type displayed higher levels of critical listening proficiency. Implications for Research and Practice: In the light of the results of this paper, the following recommendations can be given; the students studying in the departments focusing on mathematical skills should include more studies designed to improve critical listening proficiency in their undergraduate education. In pre-service trainings, many strategies and techniques should be included to improve the teacher candidates’ proficiency for “Attention-Preparation” in critical listening. Considering the year the pre-service teachers are studying in, their critical listening abilities can be determined and the contributions of undergraduate education in this respect can be studied.
AtıfScopus3WoS1OpenAlex14İncele - MakaleAçık Erişim2017Scopus SJRQ3Web Pages Classification with Parliamentary Optimization Algorithm
Kiziloluk, Soner; Ozer, Ahmet Bedri
In recent years, data on the Internet has grown exponentially, attaining enormous dimensions. This situation makes it difficult to obtain useful information from such data. Web mining is the process of using data mining techniques such as association rules, classification, clustering, and statistics to discover and extract information from Web documents. Optimization algorithms play an important role in such techniques. In this work, the parliamentary optimization algorithm (POA), which is one of the latest social-based metaheuristic algorithms, has been adopted for Web page classification. Two different data sets (Course and Student) were selected for experimental evaluation, and HTML tags were used as features. The data sets were tested using different classification algorithms implemented in WEKA, and the results were compared with those of the POA. The POA was found to yield promising results compared to the other algorithms. This study is the first to propose the POA for effective Web page classification.
AtıfScopus11WoS9OpenAlex10İncele - Derleme MakaleYayıncıda açık erişim2017Scopus SJRQ3Regulation of signaling pathways by tanshinones in different cancers
Lin, X.; Qureshi, M.Z.; Romero, M.A.; Khalid, S.; Aras, A.; Ozbey, U.; Farooqi, A.A.
Past several years have witnessed dramatic leaps in our understanding of rewiring of gene expression at the translation level during cancer developmentthat provides linchpin support to the transformed phenotype. Most recent and ground-breaking developments in the field of molecular oncology aredriven by an explosion in technological advancements and have started to reveal previously unimagined regulatory mechanisms and how they intricately co-ordinate to modulate cancer progression, loss of apoptosis and development of resistance against different therapeutics. However, the insights gained from work in this natural product research have far-reaching impact because of rapidly increasing repertoire of medicinally and biologically efficient phytochemicals. How Tanshinones mediate targeting of JAK-STAT, ER stress associated signaling cascade,PI3K/AKT/mTOR pathway,autophagy, TRAIL pathway and microRNAs are being discovered and will prove to be helpful in getting a step closer to personalized medicine.
AtıfScopus12OpenAlex12
İncele - MakaleYalnız künye2017Scopus SJRQ2Seasonal prevalence of Escherichia coli O157:H7, Listeria spp. and Salmonella spp. in fermented sausages, sosis and salami in eastern Turkey
Ozbey, Gokben; Ozbey, Ulku; Kok, Filiz
The goal of our study was to characterize the proportions and seasonal prevalence of Escherichia coli (E. coli) O157:H7, Listeria spp. and Salmonella spp. in fermented sausages, sosis and salami. A total of 192 samples consisting of sausage (n=96), sosis (n=48) and salami (n=48) purchased from different butcher shops and markets in the Elazig Province of eastern Turkey for one year duration were processed and tested by culture and polymerase chain reaction (PCR) for the presence of E. coli O157:H7, Listeria spp. and Salmonella spp. L. innocua was found to be the most predominant Listeria spp. in fermented sausages and sosis whereas, L. monocytogenes (1.04%) and Salmonella spp. (1.04%) were detected at much lower prevalence in fermented sausage. No L. monocytogenes and Salmonella spp. were determined in salami samples. In addition, no Salmonella spp. was detected in sosis samples. L. welshimeri (12.5%) was observed most frequently on salami samples. No E. coli O157:H7 was isolated in any samples of fermented sausage, sosis and salami. Seasonal prevalence of Listeria spp. in fermented sausages, sosis and salami was highest in July, with no L. monocytogenes and Salmonella spp. being isolated during autumn, winter and spring months of the year. Although the proportion of L. monocytogenes in fermented sausages and sosis is much lower in the current study, the presence of L. monocytogenes in these samples in the Elazig Province of eastern Turkey could still present a major public health threat.
AtıfScopus3İncele - MakaleAçık Erişim2017Scopus SJRQ2Identifying key factors of rail transit service quality: An empirical analysis for Istanbul
Isikli, Erkan; Aydin, Nezir; Celik, Erkan; Gumus, Alev Taskin
Providing a high quality of service in public transportation is essential to reduce dissatisfactions stemming from traffic congestion and noise. Public transport providers need to find ways to dilute the effects of immoderate use of private cars in big cities while maintaining a sufficient level of customer satisfaction. This study aimed to identify the key service quality (SQ) factors that drive passenger satisfaction in Istanbul’s rail transit (RT) system using data obtained from an extensive survey conducted by the Istanbul Public Transportation Co. A total of 11,116 passengers who used rail transport from May 15-June 3, 2012, and June 17-July 3, 2013, were interviewed in person. The relative importance of the SQ factors was assessed so that service provision could be prioritized and the enhancement of passenger satisfaction can be achieved employing several social choice techniques. The results indicate that, from an overall perspective, waiting time, crowdedness in cars, and fare are the SQ factors that best reflect the public good.
AtıfScopus31OpenAlex36İncele - MakaleYalnız künye2017Scopus SJRQ2Assessment of occupational hazards and associated risks in fuzzy environment: A case study of a university chemical laboratory
Ozdemir, Yasal; Gul, Muhammet; Celik, Erkan
University laboratories involve various occupational hazards during the research and course activities, which might affect health and safety of both researchers and students, including chemical, physical, electrical, mechanical, as well as ergonomic and psychosocial risk factors. There are many aspects open to improvements in Occupational Health and Safety management of laboratories, and it is required to deal with risks, reduce them in an acceptable level, and implement control measures. In this study, a risk assessment approach is proposed for the university laboratory operations. The proposed approach incorporates 5S methodology, failure modes and effects analysis (FMEA), interval type-two fuzzy sets (IT2FSs), analytic hierarchy process (AHP), and the VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR). AHP is injected into IT2FSs in the phase of evaluation and weighting of severity (S), occurrence (O), and detectability (D) parameters of FMEA. By applying IT2FVIKOR, it is aimed at prioritizing the emerged hazards in the chemical laboratory of the observed university. The proposed approach reveals the important hazards and suggests control measures for managing them. The study methodologically contributes to risk assessment in the knowledge, while a case study in a chemical laboratory of a newly established university offers an insight into education industry in safety improvement.
AtıfScopus89WoS75OpenAlex90İncele - MakaleYalnız künye2017Scopus SJRQ2Characterisation of natural streams using community indices and basal resources of macroinvertebrates in the upper Euphrates Basin
Gültekin, Zuhal; Remmers, Wolfram; Aydin, Rahmi; Winkelmann, Carola; Hellmann, Claudia
The characterisation of natural stream conditions is the first important step to analyse ecological quality of streams in the Euphrates basin. We found that the community indices correspond to very good ecological conditions in five natural streams of that region. The macroinvertebrates composition differed significantly between September and May. Number of taxa and Shannon index were significantly higher in autumn than in spring. FPOM and biofilm were the most relevant basal resources of benthic invertebrates.
AtıfScopus1OpenAlex2İncele - MakaleYalnız künye2017Scopus SJRQ1A beam search approach for solving type II robotic parallel assembly line balancing problem
Çil, Zeynel Abidin; Mete, Süleyman; Özceylan, Eren; Ağpak, Kürşad
In a robotic assembly line, a series of stations are arranged along a conveyor belt and a robot performs on tasks at each station. Parallel assembly lines can provide improving line balance, productivity and so on. Combining robotic and parallel assembly lines ensure increasing flexibility of system, capacity and decreasing breakdown sensitivity. Although aforementioned benefits, balancing of robotic parallel assembly lines is lacking – to the best knowledge of the authors- in the literature. Therefore, a mathematical model is proposed to define/solve the problem and also iterative beam search (IBS), best search method based on IBS (BIBS) and cutting BIBS (CBIBS) algorithms are presented to solve the large-size problem due to the complexity of the problem. The algorithm also tested on the generated benchmark problems for robotic parallel assembly line balancing problem. The superior performances of the proposed algorithms are verified by using a statistical test. The results show that the algorithms are very competitive and promising tool for further researches in the literature.
AtıfScopus56WoS48OpenAlex56İncele - MakaleAçık Erişim2017Scopus SJRQ2Optimization of an Analytical Method for Determination of Pyrene in Smoked Meat Products
Ince, Muharrem; Kaplan Ince, Olcay; Yaman, Mehmet
In the present study, an analytical method was optimized for determination of pyrene by solid-phase extraction in Turkish foodstuffs including chicken and grilled meat samples. In accordance with this purpose, all of the parameters that may affect the signal of pyrene during analysis processes were optimized using high-performance liquid chromatography–mass spectrometry system. The optimized parameters for column temperature, injection volume, mobile-phase flow rate, and fragmentor potential were found to be 45 °C, 60 μL, 0.6 mL min−1, and 130 V, respectively. The optimized high-performance liquid chromatography–mass spectrometry method was applied for the determination and evaluation of pyrene in food samples that include chicken and grilled meat. The pyrene amount in meat samples was obtained in the range from 2.3 to 4.4 μg kg−1 for the normal grilled meat and chicken samples and from 12 to 135 μg kg−1 for exceedingly grilled samples. The results show that the concentration of pyrene is significantly dependent on the type of meat sample and cooking source. The limit of detection and quantitation was found to be 0.5 μg L−1 and 1.53 μg L−1, respectively.
AtıfScopus5WoS5OpenAlex7İncele - MakaleYalnız künye2017Scopus SJRQ4Growth and bioaccumulation of cadmium, zinc, lead, copper in Dunaliella sp. isolated from Homa lagoon, eastern Aegean Sea
Kutlu, Banu; Mutlu, Ekrem
Present study consists the growth of cell and bioaccumulation capacity of Cadmium (Cd), Zinc (Zn), Lead (Pb), Copper (Cu) by Dunaliella sp. isolated from Homa Lagoon, Eastern Aegean, Turkey. Sterile medium f/2 was used for the cultivation. Growth rate, mean growth rate, relative growth rate and generation time of Dunaliella sp. were calculated for determining the growth of cell. In addition, optimum pH values were determined for each heavy metal. Our results pointed out that the optimum time for harvesting Dunaliella sp. was in 8 days. Uptake of heavy metals of Dunaliella sp. showed high tendency for zinc accumulation followed by copper, lead, and the lowest tendency was for cadmium. Highest bioaccumulation of Zn was determined to be 151.64 µg/L at 2.45 of pH under in situ conditions. pH had noticeably affected the bioaccumulation capacity of Dunaliella sp.
AtıfScopus4İncele - MakaleAçık Erişim2017Scopus SJRQ2On the novel wave behaviors to the coupled nonlinear Maccari's system with complex structure
Baskonus, Haci Mehmet; Sulaiman, Tukur Abdulkadir; Bulut, Hasan
In this paper, we seek for the new soliton solutions to the coupled nonlinear Maccari's system by using sine-Gordon expansion method. Sine-Gordon expansion method is based on sine-Gordon Eq. (2.1) and a travelling wave transformation. We obtain new complex hyperbolic functions solutions to this system with help of Wolfram Mathematica 9, we also plot 3-dimensional and 2-dimensional graphics to some obtained solution using the same program in Wolfram Mathematica 9. Finally, we submit a comprehensive conclusions.
AtıfScopus83WoS85OpenAlex90İncele