Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Ashyralyyev, Charyyar(18)
- Ashyralyev, A.(15)
- Dogan, Ramazan Ozgur(15)
- Ashyralyev, A(10)
- Ekinci, Murat(9)
- Lukashov, A.(9)
- Kayikçioglu, Temel(8)
- Malkowsky, E(8)
- Özden, Talat(8)
- Akinoglu, Bulent G.(7)
- Memetoglu, M. E.(7)
- Albayrak, Cenk(6)
- Ashyralyev, Allaberen(6)
- Cakir, Zafer(6)
- Dogan, Hulya(6)
- Kayikcioglu, Temel(6)
- Bingol, Ozkan(5)
- Bingöl, Ozkan(5)
- Cakalli, H.(5)
- Canak, I.(5)
- Demir, S.(5)
- Gedikli, Eyup(5)
- Gurtug, O.(5)
- Harte, R.(5)
- Kalkan, A.(5)
- Kandemir, H.S.(5)
- Kocinac, L.D.R.(5)
- Ozden, Talat(5)
- Ozsahin, M(5)
- Sadybekov, M.(5)
- Sahin, H.(5)
- Simsek, Cemaleddin(5)
- Tez, M.(5)
- Turan, I.(5)
- Yildirim, Omer(5)
- Çakmak, Recep(5)
- Akay, K.U.(4)
- Akpulat, Murat(4)
- Aliyazicioglu, Y.(4)
- Altas, Ismail H.(4)
Yayınlar
- BildiriYalnız künye2021Numerical solution of the nonlocal reverse parabolic problem with second kind boundary and integral conditions
Ashyralyyev, Charyyar; Gönenç, Ahmet; Ashyralyev, A.; Ashralyyev, C.; Erdogan, A.S.; Lukashov, A.; Sadybekov, M.
In this work, we consider approximation of nonlocal reverse parabolic problem with second kind boundary and integral conditions. Stability and coercive stability estimates for solution of difference scheme are obtained. Some illustrations of numerical results in examples of one and two dimensional reverse parabolic equations are presented.
- BildiriYalnız künye2021Stability estimates for a third order of accuracy difference scheme elliptic overdetermined multi-point problem
Ashyralyyev, Charyyar; Akyuz, Gulzipa; Cakalli, H.; Kocinac, L.D.R.; Ashyralyev, A.; Harte, R.; Dik, M.; Canak, I.; Kandemir, H.S.; Tez, M.
In this work, we discuss a third order of accuracy difference scheme for approximate solution of the elliptic overdetermined multi-point problem in the Hilbert space. Functional operator approach is used to study existence and uniqueness of solution of difference problem. Stability, almost coercive stability and coercive stability estimates for solution of difference scheme are established.
- BildiriAçık Erişim2021GIS-BASED OPTIMUM SITE SELECTION for SOLAR ELECTRIC VEHICLE CHARGING STATION: ANKARA-ISTANBUL HIGHWAY CASE
Hisoglu, Seyit; Comert, R.; Karas, I.R.; Ben Ahmed, M.; Boudhir, A.A.; Ane, B.K.
Energy sources are divided into renewable and non-renewable sources. It can be seen that non-renewable energy resources are not adequately meeting the increased demands of worldwide technological developments, increasing population, and global consumption. Therefore, the demand for renewable resources is increasing day by day. When it comes to the use of non-renewable carbon-based fossil fuels, one of the first areas that come to mind is undoubtedly the Automotive sector. Today, it is realized that one of the main reasons for the lack of electric motor cars compared to petroleum fuelled cars, is the scarcity of electric vehicle charging stations and the difficulty of their accessibility. In this study; an analysis of solar-powered electric charging stations site selection was carried out for electric vehicles. The Ankara-Istanbul highway, which has a high traffic density, was chosen as the sample route for the study. Within the scope of the study, the areas where stations can be installed on the highway were carried out using the Multi-Criteria Decision Making Method with the help of Geographic Information System. Solar radiation, slope, aspect, land use/land cover, traffic volume and proximity to the road, criteria of the route, and site selection analysis were determined as input data. The maps of the determined criteria were arranged according to the study area and prepared for analysis. The criteria maps obtained were reclassified according to the above-mentioned criteria and scoring system. After the reclassification process, the weighting of each criteria which affect the analysis was determined by the researched literature and an overlapping process was carried out. According to the results map produced as a result of the overlay analysis, the appropriate area has been determined for the electric charging stations working with solar energy. On the defined route within the scope of the study, a proposal has been made for a total of 13 stations, 8 in Ankara, 3 in Bolu, 1 in Kocaeli, and 1 in Istanbul. This study, it is aimed to encourage automobile users to make greater use of electric motor vehicles, which would be a more environmentally friendly and sustainable choice, and ultimately more economical.
- BildiriYalnız künye2021Sequential Pattern Mining Method for Predictive Maintenance of Large Mining Trucks
Kahraman, Abdulgani; Kantardzic, Mehmed; Kahraman, M. Mustafa; Kotan, Muhammed; Hasic Telalovic, J.; Kantardzic, M.
In recent decades, various solutions had been sought for reducing operating costs while increasing the production of minerals in mining operations. Equipment health monitoring technologies had been used for monitoring and increasing the availability of machines. However, the data obtained from these technologies had only been used for monitoring the equipment health, and not for the prediction of failures. In this paper, it was relied on alarms and signals collected through real-time health monitoring technologies for predicting crucial mining truck failures. Sequential Pattern Mining (SPM) Method for Predictive Maintenance had been developed and implemented as a methodology to discover which group of alarms and signals might be related to specific truck failures. The results indicate that the SPM method is able to detect machine failures of trucks with high accuracy with an average 96%. The proposed methodology may reduce the maintenance time, and the expenditures caused by truck breakdowns in the mining industry.
- BildiriYalnız künye2021Identification Elliptic Problem with Dirichlet and Integral Conditions
Ashyralyyev, Charyyar; Ashyralyev, A.; Kalmenov, T.S.; Ruzhansky, M.V.; Sadybekov, M.A.; Suragan, D.
In the present paper, identification elliptic problem in a Hilbert space with Dirichlet and integral boundary conditions is discussed. Identification problem is reduced to auxiliary nonlocal boundary value problem with nonlocal integral condition. Operator approach is used to prove stability and coercive stability inequalities for solution of source identification elliptic problem in the case of a self-adjoint positive definite operator in a differential equation. As applications, four mixed boundary value problems for strongly elliptic multidimensional partial differential equation are investigated. Theorems on stability of solutions of these boundary value problems are established.
- BildiriYayıncıda açık erişim2021On stable difference scheme for identification elliptic problem with integral and second kind boundary condition
Ashyralyyev, Charyyar; Cakalli, H.; Kocinac, L.D.R.; Ashyralyev, A.; Harte, R.; Dik, M.; Canak, I.; Kandemir, H.S.; Tez, M.; Gurtug, O.
In this study, the first order of accuracy difference scheme for approximate solution of source identification elliptic problem with integral and second kind boundary conditions is considered. Stability and coercive stability estimates for solution of the difference scheme are described. Moreover, test example with computation results is given.
- BildiriYalnız künye2021On well-posedness of source identification elliptic problem with nonlocal boundary conditions
Ashyralyev, Allaberen; Ashyralyyev, Charyyar; Zvyagin, Viktor G.; Ashyralyev, A.; Ashralyyev, C.; Erdogan, A.S.; Lukashov, A.; Sadybekov, M.
We study the well-posedness of the source identification problem for the two dimensional elliptic differential equation with nonlocal boundary conditions. Applying operator approaches, the exact estimates for the solution of this problem in Hölder norms are established.
- BildiriYalnız künye2020Helal Konseptli Otel Yöneticilerinin Helal Otelcilik Farkındalıkları Üzerine Nitel Bir Araştırma
Çalık, İsmail; Pekerşen, Yeliz
Bu araştırmanın amacı; helal turizm konseptinde hizmet veren otel işletmelerinin; helal otel kriterleri, helal otel sertifikası ve dini hassasiyete sahip misafirlerin istekleri gibi konularda farkındalık düzeylerinin tespit edilmesidir. Araştırmada verilerin toplanmasında mülakat, analiz edilmesinde içerik analizi yöntemi kullanılmıştır. Bu kapsamda Konya’da faaliyet gösteren helal konseptli otellerde yöneticilik yapan 11 kişi ile mülakat gerçekleştirilmiştir. Araştırmadan elde edilen sonuçlara göre; otel yöneticilerinin helal sertifikasyon hususunda istekli olmadıkları ve bazı otellerin müşteri kaybetmemek adına helal otelcilik kriterleri konusunda net kararlar alamadıkları ortaya çıkarılmıştır.
- BildiriYalnız künye2020A fuzzy decision maker to determine optimal starting time of shiftable loads in the smart grids
Altaş, Ismail Hakkı; Çakmak, Recep
Smart grid studies have been increased tremendously for past ten years in order to modernise and solve problems of current electrical grids. One of the aim of the smart grids is to react autonomously to the problems in electrical networks by means of artificial intelligence and decision maker. Fuzzy logic-based embedded control systems simulate human thoughts and decision making processes. So, fuzzy logic and fuzzy decision makers can be utilised in smart grids for automated system management. In this paper, a fuzzy decision maker has been proposed to manage time-shiftable loads in residences. The proposed fuzzy decision maker determines optimal starting time of time-shiftable loads in residential areas in order to provide balanced power curve and decrease peak load consumptions by scheduling the loads. Design stage of the proposed fuzzy decision maker have been introduced and presented clearly. Finally, a design example has been given to show the decision results.
- BildiriYalnız künye2020Nine Years Long Term Performance and Degradation Assessment of Two On-Grid PV Systems
Ozden, Talat; Ozgun, Ensar Mesut; Keles, Bedirhan; Akinoglu, Bulent G.
Nine years outdoor testing of the two on-grid PV systems at Central Anatolia under the same ambient conditions is very important to be discovered toward transition to renewables. The systems consist of a monocrystalline silicon and micro-crystalline silicon based amorphous thin film PV technologies. The analyses are carried out on monthly based using the outdoor efficiencies. In addition, degradation rates of these systems are calculated and compared with each other and also with international literature. It is also compared the results using the degradation rates of an earlier study carried out using measurements of a shorter period of time.
- BildiriYalnız künye2020Evaluation of home health care vehicle routing methods by intuitionistic fuzzy AHP
Peker, Iskender; Caybasi, Gokhan; Buyukozkan, Gulcin; Gocer, Fethullah; Kahraman, C.; Cevik Onar, S.; Oztaysi, B.; Sari, I.U.; Cebi, S.; Tolga, A.C.
In our country, Home Health Care (HHC) units support people who are fully bed-dependent in order to provide health services at the right time, place and conditions. Vehicle Routing Problem (VRP) is used for cost, speed and distance optimization in delivering products or services to customers. In addition, there will be improvements in HHC and it will also save on transportation, storage and labor costs by determining the most appropriate VRP’s solution methods. In this respect, the aim of this study is to determine the best VRP’s solution method which can increase the efficiency of HHC. The proposed approach is based on Intuitionistic Fuzzy Analytic Hierarchy Process (IF-AHP) method which is a strong technique for dealing with uncertainties. According to results, the most important criteria is “time based factors”. Meta-heuristic is the appropriate solution algorithms for VRP in HHC.
- BildiriYalnız künye2020Duplicated Audio Segment Detection with Local Binary Pattern
Kucukugurlu, Busranur; Ustubioglu, Beste; Ulutas, Guzin; Herencsar, N.
Due to the advantages of convenience, and difficulty of detection, copy-move forgery is one of the most common audio forgery forms. It is significant to decide whether there is a duplicated segment in the audio. In order to detect copy-move forgery, a new method is proposed in this paper. In the proposed algorithm, first the audio is segmented into syllables using a pitch tracking method. Second, each syllable analyzed with a 1-D local binary pattern operator. This operator calculates the histogram of each syllable. Mean square error is used to compute the similarities of histograms. The syllables which have similar histograms are detected as forged audio segments. Compared to another 1-D local binary pattern method, the proposed method has better detection results for copy-move forgery. Our experiments show that the proposed algorithm is feasible and effective, and robust against many common postprocessing operations such as noise addition, filtering, and compression.
- BildiriYalnız künye2020Sliding mode control for a quadrotor UAV transporting a cable-suspended payload
Bingöl, Özhan; Güzey, Haci Mehmet; Ronzhin, A.; Shishlakov, V.
In this study, a second-order sliding mode control (2-SMC) strategy has been developed to control a small quadrotor UAV with a suspended payload. It is shown that the existence of a load will cause an oscillation on the system and its movement will remarkably change the dynamics of the quadrotor. In order to overcome this, an upgraded 2-SMC has been suggested to ensure the stability of the system. Firstly, the mathematical model of the quadrotor-suspended payload system is derived based on Lagrange approach, then the suggested controller is designed, and the stability of the system is proved by Lyapunov theory. Finally, numerical simulations are carried out to demonstrate the robustness of the proposed method.
- BildiriAçık Erişim2019THE COURSE OF SOCIAL SECURITY SPENDING WITHIN THE PROCESS OF SOCIETY 5.0
Sahin, Muhammet; Günay, Hamdi Furkan; Oktar, SA; Taskin, Y
Technological developments have left indelible impacts on the economy all along the line. Every novel invention realized changes production processes rapidly, which concomitantly transforms social life. One of the most apparent examples of this is the First Industrial Revolution emerged in the 18th Century. Subsequent to this development which was considered as the beginning of production in the factory environment, the second industrial revolution based on automation (First half of 20th Century) and the third Industrial Revolution based on electronics (last quarter of the 20th century) were realized. Finally, the Fourth Industrial Revolution (Industry 4.0) process was initiated by Germany in 2011. In line with this process in which cyber-physical systems and robotic technologies are expected to prevail, Super-Smart Society (Society 5.0) model was developed by Japan in 2017. Both Industry 4.0 and Society 5.0 implementations are expected to have a significant impact on economic and social life and to change both labor and Welfare State practices fundamentally. It is also possible that these aforementioned developments may have an impact on social security system of the government. Likewise, the emergence of extensive unemployment condition due to robotic technologies and training for adaptation of available labor force to the new technologies may lead to redesign of the social security system. The aim of this study is to demonstrate the possible impacts of the Industry 4.0 and Society 5.0 processes on social security expenditures. The basic result obtained from the study; unemployment increase and training activities for the labor-force increases social security expenditures, but however digitalization process in Welfare State implementations may be expected to decrease social security expenditures in the long-run depending on efficiency and effectiveness increases in the government.
- BildiriAçık Erişim2019POLITICAL POLARIZATION, INCOME INEQUALITY AND SIZE OF GOVERNMENT
Akdede, Sacit Hadi; Keyifli, Nazli; Oktar, SA; Taskin, Y
This paper empirically investigates the determinants of political polarization. Size of government and income distribution are the main independent variables along with other controlling variables. The statistical analysis uses panel data econometric. The sample of countries includes 57 countries and time period spans between 1990 and 2015. Results of regressions analysis indicates that increased income inequality increases political polarization. Political polarization is derived from World Values Survey (WVS). It is measured as standard deviation of responses to the question what is role for government. In addition, results of our empirical indicates that increased government size reduces the political polarization. The paper explains the links for these findings. It concludes with some policy implications.
- BildiriYalnız künye2019Meta-Heuristic Algorithms Based Multi-Level Thresholding
Küçükugurlu, Busranur; Gedikli, Eyup
Thresholding is a very important stage in computer vision applications. An ideal single thresholding algorithm is not available for all environments. Multi-level thresholding in environments with multiple objects is constantly being developed for interpretation of images. Kapur entropy and Otsu approaches are among the most successful algorithms in the literature. In this study, it is tried to increase the performance of Otsu and Kapur algorithms by using meta-heuristic optimization approaches. The results of the Firefly Algorithm (FF) and Real Coded Genetic Algorithm (RGA) were evaluated with PSNR, SSIM and CPU processing time criteria.
- BildiriYalnız künye2019Realization of a low cost and fast boost converter based MPPT for PV system
Basoglu, Mustafa Engin
Photovoltaic (PV) modules have a small power conversion efficiency since material technologies used in commercial PV modules is weak and not well developed. In order to provide the maximum available efficiency in a PV module, a power processing unit (PPU) is connected between PV module and load to extract more power from PV modules In other words, DC-DC converters are used for impedance matching between PV module and load in any kind of loading and environmental conditions. Several maximum power point tracking (MPPT) algorithms have been proposed in the literature. But there are still shortcomings to be improved such as reducing the steady state ripples in power, dynamic response time under changing conditions. In this paper, design steps of the boost converter for an MPPT application have been presented and some experiments have been performed. Consequently, a low cost and fast boost converter based MPPT is implemented.
- BildiriYalnız künye2019Measuring and improving operator performance on large mining equipment
Kahraman, M.M.; Benzer, H.; Aydogan, N.; Karadeniz, M.; Altun, O.; Dundar, H.; Gulsun Kilic, M.; Kundak, E.; Yilmazkaya, E.; Kertmen, P.
Mining as an industry is in the middle of commodity price upheaval that is wiping out many mining firms. Only the companies that have adapted right technology and data driven decision making culture will survive after each commodity price cycle. Latest technological solutions made it possible to track materials and equipment in every step of mining; from the face to plant to facilitate decision making process. Mines are investing in equipment monitoring technology with the expectation of gaining large increases in equipment productivity and reliability. Simply buying the technology does not result in achieving the promised benefits. Only a holistic approach can achieve these benefits, considering the people (analytical skills and culture), the process (deliberate means of using the data), and the platform (analytical technology). One of the principle methods for achieving this advantage is through increasing productivity and equipment health of major production equipment. This paper presents a case study using equipment monitoring technology as part of an operator performance system for a major machine asset: a dragline.
- BildiriYalnız künye2019Paleomagnetic investigation of the Miocene - Quaternary volcanic rocks between Varto-Tunceli
Kayin, S.; Isseven, T.
After collision between the Arabian and the Eurasian plates, Anatolian plate began to move westward, along the East Anatolian Fault Zone (EAFZ) and North Anatolian Fault Zone (NAFZ). NAFZ and EAFZ meet with the Varto Fault Zone (VFZ) and form a triple junction in the 10 km northeast of Karliova. In order to determine the tectonic evolution of Karliova Triple Junction (KTJ) and it's around, paleomagnetic samples were collected from the volcanic rocks, whose ages range from Miocene to Quaternary times. Our paleomagnetic results, obtained from the Karliova - Varto - Solhan region are indicate that there are counterclockwise (CCW) rotation in the regions closer to the NAFZ and EAFZ. different rotations are seen in the east of the KTJ, both western and eastern parts of the Varto Fault Zone. Also there is a remarkable change in the tectonic regime of the Tunceli - Elazig province in the Miocene - Pleistocene time interval.
- BildiriYalnız künye2019Object-based classification of Izmir Metropolitan City by using sentinel-2 images
Ozlem Yilmaz, Elif; Varol, Beril; Hale Topaloglu, Raziye; Sertel, Elif; Menekay, S.; Cetin, O.; Alparslan, O.
This study aims to create Land Cover Land Use (LCLU)map of a part of the Izmir metropolitan city in Turkey, based on an enhanced Urban Atlas nomenclature and object based classification approach. Multi-temporal Sentinel-2 images from different seasons are used and rule-based object oriented classification techniques are applied on the images. Totally 20 LCLU classes are identified in the study area with different accuracy values. Thematic open source data were also integrated into classification to better identify some land use classes and to increase the total classification accuracy. Our results show that 10-m bands of Sentinel-2 images are capable to produce thematically detailed LCLU map with an overall accuracy of 86% and 0.852 Kappa values.