Sürdürülebilir Kalkınma Amaçları

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  • Kitap BölümüYalnız künye2019
    University students’ motivations for watching social media advertisements: A study in the context of uses and gratifications theory

    Diker, Ersin; Gencer, Zekiye Tamer

    Social media tools which are popular today among young people, especially university students, provide individuals opportunities to create their own profiles and share music, videos and photos related with their interests. These social networks sometimes surpass traditional socialization spheres such as family, school, peer groups and society, and they also cause traditional media means (TV, radio, newspaper, etc.) to lose their effects. These media tools play an important role on the individuals to create their own identities in the socialization process. The identities of this new platform, its connections and the contents produced generate a new generation. Digital networks provide for this new generation an easy and convenient platform to communicate with their family, friends and the others. In addition, they provide maximum pleasure and gratification for these individual users by fulfilling their needs constantly and immediately. In the past, people used to use various mass communication tools like television, radio and movies as well as face-to-face human interaction in order to fulfill these needs and desires. Most of the time, these gratifications could not realize because of the reasons such as inaccessibility, responding, programming and timing. Social networks have become to be preferred as the use of social networks are different from the traditional mass communication tools and the individuals play an active role on sending messages to others. In this respect, individuals, thanks to not only mediative social contact but also accessing other media contents optionally and eagerly, are satisfied immediately with the….

  • Kitap BölümüYalnız künye2019
    The impact of export promotion programs on the technological intensity of export products: The case of Turkey

    Mete, Emrullah; Yildiz, Gizem Akbulut

    Introduction Exports of high-tech products have gained considerable importance along with globalization and increasing competition in the world economy. Countries have become increasingly in need of exports of high-tech products in order to be competitive and to increase their market shares as well as to protect their current status in markets. In order to overcome the squeeze experienced in world trade, companies and countries increased their research and development expenses to innovate. This process, which manifests itself in producing the current product at a lower cost and/or creating a new product, changed the shares of countries in world trade and hence has become an important part of foreign trade. There is a significant number of studies in the empirical literature indicating that research and development expenses improve innovation which eventually lead to increase in the share of high-tech products in total exports of countries. Since the high-tech product means high value added product at the same time, the increase in exports of high-tech products will also facilitate the economic growth. Thus, it is also important nowadays that countries take the issue of the technology concentration into account and apply it in the scope of their export support programs. It should be taken into consideration by public authorities who design support policies for exporting that the aim of increasing export performance, competitiveness, and market share in foreign trade can be reached through exporting of high-tech products. This study investigates the impact of export….

  • BildiriYalnız künye2019
    Module Level Global Maximum Power Point Tracking Strategy

    Basoglu, Mustafa Engin

    Partial shading of photovoltaic (PV) modules can occur at any time due to the obstacles such as chimney, tree, antenna, bird flock etc. Due to such obstacles, the entire surface of the PV module cannot receive an equal amount of irradiance; Therefore, PV modules cannot operate at its maximum power point (MPP). In this paper, an improved version of a 0.8VOC model based global maximum power point tracking (GMPPT) strategy has been proposed. Single ended primary inductance converter (SEPIC) is used as a power converter between PV module and load. Effectiveness of the proposed technique is presented by experimental studies with the comparison of a full scanning approach. Results of experimental studies show that proposed GMPPT strategy outperforms than full scanning based algorithm known.

    • SDG 7 · Erişilebilir ve Temiz Enerji
    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    AtıfScopus3WoS2OpenAlex2
    ScopusWeb of Scienceİncele
  • MakaleYalnız künye2019Scopus SJRQ1
    Performance evaluation of ejector with different secondary flow directions and geometric properties for solid oxide fuel cell applications

    Genc, Omer; Timurkutluk, Bora; Toros, Serkan

    The mixing chamber length, secondary flow tube inclination angle, diffuser length and diverging angle as well as the direction of secondary flow on the ejector performance are numerically studied. The numerical results of 2560 different design points including the all combinations of the selected parameters indicate that the selected ejector geometric parameters have a great impact on the ejector performance. Within the parameter ranges considered, the best performance based on steam to carbon ratio and the entrainment is obtained from the ejector having a mixing chamber length of 30 mm, secondary flow tube inclination angle of 45°, diffuser length of 90 mm and diffuser diverging angle of 5°, regardless of the secondary flow direction. On the other hand, the parallel flow ejector, where the anode exhaust line flow direction is designed to be parallel to the primary flow direction, is found to exhibit slightly higher steam to carbon ratio and entrainment ratio compared to those of the counter flow ejector. Furthermore, it is seen that the parallel flow ejector can offer wider ranges of the ejector geometric parameters considered for a high performance whereas relatively rigid geometric parameters need to be selected for designing a counter flow ejector.

    • SDG 7 · Erişilebilir ve Temiz Enerji
    AtıfScopus17WoS15OpenAlex16
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  • MakaleYalnız künye2019Scopus SJRQ1
    Enhancing of the nonlinear absorption and optical limiting performances of the phthalocyanine thin films by adding of the single walled carbon nanotubes in poly(methyl methacrylate) host

    Yuksek, Mustafa; Kaya, Elif Çelenk; Karabulutlu, Nur; Kaya, Ahmet Afşin; Karabulut, Mevlut; Elmali, Ayhan

    Unlike the earlier nonlinear optical studies of single walled carbon nanotubes (SWCNTs) which were generally carried out as solvent, in this study, we established to deposit the unsoluble SWCNTs as homogeneous thin films by blending them with phthalocyanines in PMMA host. The structural and morphological features of the thin films were studied by SEM and TEM imaging techniques while the linear, nonlinear-absorptions and carrier dynamic properties of the thin films were investigated with the UV–Vis spectrophotometer, open aperture Z-scan experiments and pump-probe technique, respectively. In addition, the optical limiting performances of the samples were calculated from nonlinear absorption spectra. It was observed that the linear- and nonlinear-absorptions and optical limiting performance of the thin films increased with the mixing of the SWCNT sample with the Pcs complexes. We have clearly explained the mechanisms contributing to the nonlinear optical absorption and optical limiting performances.

    AtıfScopus12WoS11OpenAlex10
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  • Kitap BölümüYalnız künye2019
    Post-fordism and urban policy

    Cengiz, Emre

  • Kitap BölümüYalnız künye2019
    Tax competition: Evaluation in terms of tax havens

    Yildiz, Bariş

  • Kitap BölümüYalnız künye2019
    Postmodern political perspective

    Celik, Hasan Bozkurt

  • MakaleYalnız künye2019Scopus SJRQ4
    3Bio-Based Additives to Improve Diesel Engine Performance and Emissions

    Sezer, İsmet

    This study investigates addition of ethanol and diethyl ether into diesel fuel. Base fuel and three different blends were used in the tests. The experiments were performed at engine speed of 1500 rpm and under various loads by single cylinder diesel engine. Injection, combustion, performance and emissions parameters were evaluated for base fuel and blends. Results show that injection pressure decreases for all blends, and DEE addition causes delay in injection timing. Burnt mass fraction is lower for ethanol and DEE blends during early combustion phase, while it increases with DEE blends during progressive combustion phase. Ethanol and DEE blends also give reductions in cylinder pressure and temperature. Generally, air excess coefficients increase but exhaust gas temperature decreases when using ethanol and DEE blends. Although ethanol blend causes decrements in engine power and torque, DEE blends give closer values to diesel fuel. Both ethanol and DEE blends yield improvement in brake thermal efficiency and reduction in brake specific fuel consumption. When using fuel blends, generally, decrements in NOx and CO2 emissions and increments in HC emission occur, while CO emission shows fluctuations depending on engine load.

  • MakaleYalnız künye2019Scopus SJRQ1
    A new colorimetric method for CUPRAC assay with using of TLC plate

    Akar, Zeynep; Burnaz, Nesibe Arslan

    Cupric reducing antioxidant capacity (CUPRAC) method is one of the most widely used antioxidant methods. However, its need for a spectrophotometer, as in many other methods, is an important disadvantage. Cupric reducing antioxidant capacity was determined based on color analysis with Image J program in computer with the new method developed in this study and thus, use of spectrophotometer was eliminated. The new colorimetric CUPRAC assay was applied to various standard antioxidants and plant extracts. The reaction mixtures were dropped on TLC plate. The colors formed on TLC were transferred to the computer by using scanner images, and CTEAC value in μmol/L of each sample was determined with the image J program. The CTEAC values were compared with the TEAC values measured with the spectrometric method. A linear relationship was found between both (C)TEAC values of antioxidant standards (R2 = 0.991) and plant extracts (R2 = 0.994). Thus, the new method developed for the CUPRAC antioxidant assay can be easily performed in any environment without spectrophotometer device, and it is a low-cost method.

    AtıfScopus17WoS15OpenAlex25
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  • Kitap BölümüYalnız künye2019Scopus SJRQ3
    COPRAS method with neutrosophic sets

    Şahin, Rıdvan

    Interval neutrosophic number (INN), which is descripted by the degree of truth-membership, indeterminacy-membership and falsity-membership of an element, is a powerful information tool with many application areas. The purpose of this study is to develop an extended form of COPRAS (Complex Proportional Assessment) method used for solving the decision making problems in which all the data presented by decision makers is in the form of interval neutrosophic matrix presented by INNs, and the information about criterion weights is partially known or completely unknown. In order to accomplish this goal, a new score function and an accuracy function that consider the decision maker’s risk attitude are defined under a parameter called the risk index to determine the ordering of INNs. Then, based on Maclaurin symmetric mean (MSM) operator that can capture the interrelationships among multi-input arguments, some aggregation operators are defined, such as interval neutrosophic Maclaurin symmetric mean (INMSM) operator and interval neutrosophic weighted Maclaurin symmetric mean (INWMSM) operator. Moreover, some optimization models are established to determine the subjective and objective weights of decision criteria. A numerical problem is solved to demonstrate the effective and feasible structure of the developed method. Then, a sensitive analysis is conducted according to the decision maker’s risk attitude, and the advantages of the developed method are listed. Finally, a comparison analysis is provided to present the relationships among the developed method and existing methods, and some conclusions are given at the end of the study.

    AtıfScopus6OpenAlex6
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  • Derleme MakaleYalnız künye2019Scopus SJRQ2
    Automation in the Mining Industry: Review of Technology, Systems, Human Factors, and Political Risk

    Rogers, W. Pratt; Kahraman, M. Mustafa; Drews, Frank A.; Powell, Kody; Haight, Joel M.; Wang, Yaxue; Baxla, Kritika; Sobalkar, Mohit

    In the opinion of these authors, technology alone can never give an organization an edge over competitors or provide an industry step change. However, history has shown that technology applied with correct logistics and strategy makes a significant difference. Never has the minerals industry faced such daunting challenges and been in such need of a step change. Application of autonomous systems has been steadily increasing in the minerals industry. Automation technology has changed the mining value chain from exploration to mineral processing and refining. The future state will only see additional in-roads of automation into more processes and the whole system design. To better understand the near-future potential of automation, it is useful to explore and review the current state of automation in minerals development. A review of the state of automation research is given. The review will consider three critical areas: automation technology, system’s engineering and management processes around automation, and the role of human factors engineering in automated and semi-automated systems. The review ends with a discussion on the social and political risks of automation in terms of shared value and sustainable development.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    AtıfScopus95WoS70OpenAlex75
    ScopusWeb of Scienceİncele
  • MakaleYalnız künye2019Scopus SJRQ2
    Exploring the value of using data: a case study of continuous improvement through data warehousing

    Rogers, W. Pratt; Kahraman, M. Mustafa; Dessureault, Sean

    The mining industry is adapting data-rich technology. Data management processes and infrastructure require additional investment which, can be difficult to justify. A valuation model for data management infrastructure would necessitate modelling the ‘use’ of data and quantifying the value and the likelihood of success of improvement initiatives. A model is presented which can assess the impacts of a data-driven initiative. The initiatives are shown to be the foundation of improved shift coordination resulting in significant and sustained operational improvements. This paper aims to illustrate the value of using data from source systems in mining operations.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfScopus9WoS8OpenAlex11
    ScopusWeb of Scienceİncele
  • KitapYalnız künye2019
    Contemporary Debates on Politics and Public Administration in the Postmodern Era

    Ugur, Ömer; Dogan, Kadir Caner

    The volume provides a collection of articles on current debates in the fields of politics and public administration. The authors deal with frequently mentioned concepts of our era in political and public administration sciences.

    AtıfScopus1OpenAlex6
    Scopusİncele
  • MakaleYalnız künye2019Scopus SJRQ1
    A novel niosome formulation for encapsulation of anthocyanins and modelling intestinal transport

    Fidan-Yardimci, Melike; Akay, Seref; Sharifi, Fatemeh; Sevimli-Gur, Canan; Ongen, Gaye; Yesil-Celiktas, Ozlem

    The bioavailability of drugs can be improved by regulating the structural properties, particularly lipoid systems, such as niosomes, can increase cellular uptake. Herein, we optimized double emulsion and niosomal formulations for encapsulating anthocyanin-rich black carrot extract. Nanoparticles obtained by selected formulation were characterized in terms of morphology, particle size, drug encapsulation efficiency, in vitro release and cytotoxicity. The optimum conditions for niosomal formulation were elicited as 30 mg of cholesterol, 150 mg of Tween 20 and feeding time of 1 min at a stirring rate of 900 rpm yielding the lowest average particle size of 130 nm. In vitro release data showed the majority of the encapsulated anthocyanins were released at the end of 10 h. A mathematical model was developed to estimate the absorption of anthocyanins released from niosomes and cytotoxicity was assessed against neuroblastoma. Overall, these findings suggest that niosomal vesicles might be suitable delivery systems for anthocyanins.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus67WoS61OpenAlex68
    ScopusWeb of SciencePubMedİncele
  • MakaleYalnız künye2018
    Determination of physicochemical, sensory, cooking properties and fatty acid composition of noodles enriched with flaxseed

    Çağlar, Sümeyye; Akdoğan, Havva Buse; Yuksel, Ferhat

    The aim of this study was to investigate some physicochemical, cooking and sensory characteristics as well as fatty acid composition of traditional homemade noodles enriched with flaxseed at three different concentrations (0, 10, 15 and 20 % w/w). Following shaping of the enriched noodle doughs, the samples were dried and analyses were conducted. Moisture contents of the samples were in the range of 8.81-12.93 % and decreased significantly (P< 0.05) with the addition of flaxseed. Minimum and maximum α- linolenic acid levels were 53 % and 2.3 %, as determined in the control sample and the noodle enriched with 20% flaxseed, respectively. No significant difference was determined for the smell/taste and overall acceptability scores of the noodle samples containing flaxseed (P> 0.05) while there was significant difference between control sample and others (including flaxseed) (P< 0.05). Cooking times of the samples decreased significantly (P< 0.05) by flaxseed incorporation while the cooking loss of samples did not significantly change (P> 0.05). In this study, healthier noddle was produced using flaxseed

  • MakaleYalnız künye2018
    Yerel Ekonomik Büyümede Devletin Rolü: Kamu Yatırım Harcamaları mı Yoksa Yatırım Teşvikleri mi?

    Recepoğlu, Mürşit; Değer, Mustafa Kemal

    Bu çalışma, Türkiye'deki yerel ekonomik büyümenin bir belirleyicisi olarak kamu yatırım harcamaları ile yatırım teşviklerinin etkilerini incelemektedir. Çalışmada 20042014 dönemi için Türkiye'nin illerini dikkate alan dinamik panel nedensellik testleri kullanılmıştır. Çalışmada elde edilen bulgulara göre illerin tamamını kapsayan panel için hem yatırım teşviklerinden hem de kamu yatırım harcamalarından ekonomik büyümeye doğru tek yönlü nedensel bir ilişki vardır. Bununla birlikte sosyo-ekonomik gelişmişlik derecesine göre iller alt gruplara ayrıldığında ekonomik büyüme üzerinde kamu yatırım harcamaları ile yatırım teşviklerinin etkileri farklılaşmaktadır

    AtıfTR Dizin5
    TR Dizinİncele
  • MakaleYalnız künye2018
    Asgari Geçim İndirimi Uygulamasında Çalışmayan Eş Kavramı Niteliğinin Vergilendirmede Adalet İlkesi Yönünden Değerlendirilmesi

    Günay, Hamdi Furkan; Sanver, Cahit

    Sosyal devlet anlayışı temelinde, ödeme gücü, vergilemede eşitlik ve adalet gibi kavramlarmodern vergi sistemlerinin vazgeçilmez unsurlarındandır. Bu kavramlara yönelik politika arayışlarının bir ürünü olarak doğan asgari geçim indirimi uygulamasının, yasal dayanağını 193sayılı Gelir Vergisi Kanunu oluşturmaktadır. Asgari geçim indirimi gerçek usulde ücret gelirielde eden mükelleflerin kişisel ve ailevi özelliklerine göre vergilendirilmesi esasına dayanmaktadır. Bu çalışma, asgari geçim indirimi kapsamında dikkate alınan çalışmayan eş tabirini vergilemede adalet yönünden değerlendirmeyi amaçlamaktadır. Çalışmanın sonuçları; konuya ilişkinasgari geçim indirimi uygulamasında farklı gelir unsurlarında farklı uygulamaların olmasınınyanı sıra, adalet yönünden de tartışmalı bir durumun varlığına işaret etmektedir.

  • MakaleYalnız künye2018
    Determination of Antioxidant and Antimicrobial Properties of Lady's Mantle (Alchemilla ellenbergiana) Extracts

    Ozcan, Kadriye; Acet, Tuba

    In this study, different polarity solvent (hexane, ethyl acetate, ethanol and methanol) extracts of Alchemilla ellenbergiana (Lady's Mantle), which used in folk medicine plant in Gümüşhane region, were investigated in terms of total phenolic contents, antioxidant and antimicrobial activity. Total phenolic contents were measured by spectrophotometric metod as gallic acid equivalent and detect in the highest in ethanol and methanol extracts. Antioxidant activity of extracts were determined by ABTS [2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt] and DPPH (2,2-diphenyl-1-picrylhydrazyl) methods by spectrophotometric metod and calculated as trolox equivalent. Antimicrobial activity was tested against to pathogen microorganisms by disc diffusion method. As a result, it has been found that ethanol and methanol extracts of plant have high antioxidant and antimicrobial activity (p<0.05). Similarly, it has been found that antimicrobial activity of ethanol and methanol extracts higher than others

    AtıfTR Dizin9
    TR Dizinİncele
  • MakaleYalnız künye2018
    Ludwig wittgenstein’s criticism of science of ethics

    Gülay, Peyyamisefa

    The discussion over the possibility of science of ethics stands for one of the significant parts of philosophy of ethics. Ludwig Wittgenstein does not seem to be dealing with these issues, however he has various vital reasoning that contribute to this discussion. His objections to the idea of science of ethics can be expressed generally under two titles: an ultimate scientific justification and a method established over this justification. In his view, ethics refers to an area in which one is active as the doer. This area demands for a special logic and it cannot be grounded with an approach that does not provide this demand. One of the frames that will not meet this demand is scientific logic. Ethics cannot be justified scientifically, and so it also cannot be founded as a scientific theory of ethics. Actually this would mean that ethics reach an ultimate determination and Wittgenstein states it is against the nature of what he understands from ethics. In addition, that ethics cannot be justified scientifically does not necessarily mean that ethics can be handled with a relativist approach. The former does not mean that ethics does not have a justification, but it will mean that it has a sui generis one.