Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(117)
- Kaya, Yunus(51)
- Şahin, Engin(48)
- İspirli, Hümeyra(47)
- Özen, Soner(46)
- Şenay, Volkan(45)
- Pat, Suat(44)
- Can, Zehra(39)
- Bayraktar, Bülent(37)
- Bayram, Sinan(37)
- Korkmaz, Şadan(36)
- Cuce, Erdem(35)
- Ecem Bayram, Nesrin(33)
- Kutlu, Naciye(33)
- Yilmaz, Mustafa Tahsin(32)
- Artar, Musa(31)
- Ertugrul, Mehmet(30)
- Öner, Erdal(30)
- Ayata, Ümit(29)
- Hasar, Ugur Cem(29)
- Esmer, Yusuf(28)
- Mercan, Emin(27)
- Cuce, Pinar Mert(26)
- Özdemir, Akın(25)
- Çolak, Murat(24)
- Bayram, Ozkan(23)
- Kamiloğlu, Aybike(23)
- Sert, Durmuş(22)
- Ayazoglu, Rabil(21)
- Abdioglu, Murat(20)
- Bayram, Nesrin Ecem(20)
- Kadakal, Mahir(20)
- Kara, Yakup(20)
- Kizil, Hamit Emre(20)
- Tozlu, Alperen(20)
- Birinci, Ahmet(19)
- Gerçek, Yusuf Can(19)
- Battal, Fetullah(18)
- Dirican, Ebubekir(18)
- Ergün, Mustafa(18)
Yayınlar
- MakaleAçık Erişim2022Scopus SJRQ1Determination of Propagation Constants and Wave Impedance of Non-Reciprocal Networks From Position-Insensitive Waveguide Measurements
Hasar, Ugur C.; Kaya, Yunus; Izginli, Mucahit; Ozturk, Hamdullah; Barroso, Joaquim J.; Ramahi, Omar M.; Ertugrul, Mehmet
A microwave method is proposed to determine the forward and backward propagation constants (gamma ⁺ and gamma ⁻) and the wave impedance ( z_w ) of reciprocal and non-reciprocal microwave networks whose positions are not known within their measurement cells (position-insensitive). The proposed method relies purely on analytical expressions and can also evaluate the reference plane transformation distances. Scattering parameter measurements at the X-band (8.2-12.4 GHz) of a reciprocal network (a waveguide straight) and a non-reciprocal network (a microwave phase shifter) arbitrarily positioned into their measurement cells were conducted to retrieve gamma ⁺, gamma ⁻, and z_w for validation of our method and testing its position-insensitive property. The importance of the method becomes apparent when compared to conventional methods whose accuracy is based on precise determination of the reference planes.
AtıfScopus9WoS9OpenAlex9
İncele - MakaleYalnız künye2022Scopus SJRQ1Complex Permittivity and Thickness Evaluation of Low-Loss Dielectrics From Uncalibrated Free-Space Time-Domain Measurements
Hasar, Ugur Cem; Kaya, Yunus; Ozturk, Hamdullah; Izginli, Mucahit; Barroso, Joaquim Jose; Ramahi, Omar M.; Ertugrul, Mehmet
A free-space time-domain method is proposed to retrieve dielectric constant (epsilon r), conductivity (sigma e), and thickness (d) of metal-backed low-loss dielectric samples using calibration-independent reflected power peak measurements. Its algorithm is validated by numerical calculations and simulations (CST Microwave Studio) using a sine-modulated Gaussian window. A sensitivity analysis is followed to examine its performance considering the dependencies of reflected power peaks with respect to epsilon r and sigma e. Free-space time-domain measurements have been implemented after transforming frequency-domain measurements into time-domain ones to extract epsilon r, sigma e, and d of polypropylene, polyethylene, and polyoxymethylene samples.
AtıfScopus48WoS42OpenAlex43İncele - MakaleAçık Erişim2022Scopus SJRQ2Synthesis and in Vitro Toxicity Assessment of Different Nano-Calcium Phosphate Nanoparticles
Togar, Basak; Türkez, Hasan; Bakan, Feray; Arslan, Mehmet Enes; Tatar, Abdulgani; Cacciatore, Ivana; Hacimüftüoglu, Ahmet; Çadirci, Kenan; Stefano, Di Antonio; Mardinoglu, Adil
Nanoscale biomaterials are commonly used in a wide range of biomedical applications such as bone graft substitutes, gene delivery systems, and biologically active agents. On the other hand, the cytotoxic potential of these particles hasn't yet been studied comprehensively to understand whether or not they exert any negative impact on the cellular structures. Here, we undertook the synthesis of beta-tricalcium phosphate (beta-TCP) and biphasic tricalcium phosphate (BCP) nanoparticles (NPs) and determine their concentration-dependent toxic effects in human fetal osteoblastic (hFOB 1.19) cell line. Firstly, BCP and beta-TCP were synthesized using a water-based precipitation technique and characterized by X-Ray Diffraction (XRD), Raman Spectroscopy, and Transmission Electron Microscopy (TEM). The cytological effects of beta-TCP and BCP at different concentrations (0-640 ppm) were evaluated by using 3- (4,5-dimethylthiazol-2-yl) -2,5-diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) assays. The total oxidative status (TOS) parameter was used for investigating oxidative stress potentials of the NPs. In addition, the study assessed the DNA damage product 8-hydroxy-2'-deoxyguanosine (8-Oxo-dG) level in hFOB 1.19 cell cultures. The results indicated that the beta-TCP (above 320 ppm) and BCP (above 80 ppm) NPs exhibited cytotoxicity effects on high concentrations. It was also observed that the oxidative stress increased relatively as the concentrations of NPs increased, aligning with the cytotoxicity results. However, the NPs concentrations of 160 ppm and above increased the level of 8-OH-dG. Consequently, there is a need for more systematic in vivo and in vitro approaches to the toxic effects of both nanoparticles.
AtıfScopus4WoS1OpenAlex3İncele - MakaleYalnız künye2022Scopus SJRQ1Feasible Extraction Method for Electromagnetic Properties of Multilayer Metamaterials With Short-Circuit Termination
Hasar, Ugur Cem; Ozturk, Gokhan; Kaya, Yunus; Bute, Musa; Karaaslan, Muharrem; Barroso, Joaquim J.; Ramahi, Omar M.; Ertugrul, Mehmet
An extraction technique is proposed for electromagnetic characterization of metal-backed multilayer metamaterial (MM) structures demonstrating reflection-asymmetric property. It uses recursive scattering parameters for direct and reversed configurations of a multilayer structure. The algorithm was validated by comparing the extracted electromagnetic properties of multilayer structures composed of different MM unit cells with those determined by one-layer-only S-parameter methods. Two-layer and three-layer multilayer structures composed of MM slabs with C-shaped and Omega-shaped rings and an FR4 material were fabricated and measured for experimental validation. A sensitivity analysis was also conducted to quantitatively evaluate the performance of our method against a small air gap between the multilayer structures and the short-circuit termination and between adjacent MM slabs within these structures. Strong agreement was observed between the resulted obtained using our method and measurements.
AtıfScopus10WoS10OpenAlex10İncele - MakaleAçık Erişim2022Scopus SJRQ1Pelletizing ultra-high molecular weight polyethylene (UHMWPE) powders with a novel tapered die and addition of high density polyethylene (HDPE): Processing, morphology, and properties
Yang, Huaguang; Yilmaz, Galip; Jiang, Jing; Xie, Jun; Langstraat, Thomas; Chu, Raymond; van Es, Martin; Garg, Priya; Turng, Lih-Sheng
The extremely high molecular weight and molecular entanglement have rendered ultra-high molecular weight polyethylene (UHMWPE) superior properties. However, poor inter-particle diffusion makes it difficult to pelletize UHMWPE powders for easy processing/handling. A novel tapered die with air cooling was proposed to pelletize UHMWPE and a UHMWPE blend with 5 wt% high-density polyethylene (HDPE) for compression molding and material characterization. The tensile strength of samples prepared with the tapered die outperformed those by the regular die or from virgin powders. The addition of HDPE further improved the tensile strength. Fourier transform infrared spectroscopy (FTIR) revealed little chain scission and the lowest amount of oxidation from the tapered die. Intrinsic viscosity (IV) measurements confirmed the negligible chain scission and showed an increment in IV for the UHMWPE/HDPE blend. Multi-angle light scattering with size-exclusion chromatography (SEC-MALS) indicated no change in the UHMWPE molecular weight distribution, but some crosslinking in the blend. Polarized optical microscopy (POM) showed that the HDPE and extrusion led to a finer UHMWPE domain size and better fusion between UHMWPE and HDPE. The combined effect of enhanced molecular chain diffusion, improved consolidation, and lower oxidation using the tapered die led to 40% improvement of tensile strength for the UHMWPE/HDPE blend.
AtıfScopus15WoS15İncele - MakaleAçık Erişim2021Physico-chemical Properties, Mineral Matter, Organic Acid, Amino Acid, and\rPlant Hormones Content of Goji Berry (Lycium barbarum L.) Grown in Turkey
Erdogan, Ummugulsum; Talay, Rabia; Turan, Metin
With high nutritional value, goji berry is an important fruit for human nutrition and health. Goji\rberry cultivation is done widely in many countries, farming has become widespread in recent years\rin Turkey. In study grown goji berry (Lycium barbarum L.) in Turkey are determined the physical\rand chemical characteristics of fruit (pH, titration acidity, dry matter content, ash content, water\ractivity (aw) value, protein content, HMF content, total phenolic content, total sugar content,\rreducing sugar content, sucrose content, colour values, mineral contents, organic acid contents,\ramino acid contents and some plant hormone content). Goji berry fruits have pH value 5.18, titration\racidity value 2.16%, dry matter content 89.40%, ash content 4.30%, water activity (aw) value 0.35,\rprotein content 13.18%, HMF content 9.38 mg/kg, total phenolic content 9.05 mg GAE/g, total\rsugar content 59.26%, decreasing sugar content 57.35%, sucrose content 1.90%, L* value 40.33, a*\rvalue 22.97, b* value 33.00, C* value 40.21, H° value 55.15. In addition, the mineral content, organic\racid content, amino acid content and some plant hormones of goji berry fruits were determined by\ranalysis
AtıfTR Dizin1
İncele - MakaleYalnız künye2021Okul Öncesi Dönem 5 Yaş Çocuklarının Sosyal Konumları ile Mizaç Özellikleri Arasındaki İlişkinin Belirlenmesi
Beceren, Burcu Özdemir; Arat, Ceren Ari
Bu çalışmadaki amaç okul öncesi dönem 5 yaşındaki çocukların sosyal konumları ile mizaç özellikleri\rarasındaki ilişkiyi ortaya koymaktır. Bu araştırmanın örneklemini 2017-2018 eğitim öğretim yılında İzmir\rilinin Buca ilçesinde okul öncesi eğitime devam eden 114 çocuk (70 kız, 44 erkek) ve anneleri ile babaları\rmeydana getirmektedir. Çalışma tarama modelli bir araştırma çalışmasıdır. Okul Öncesi Dönem 5 yaş\rçocuklarının sosyal konumları ile mizaç özellikleri arasındaki ilişkiyi tespit etmek için korelasyon analizi\rgerçekleştirilmiştir. Okul Öncesi Dönem 5 yaş çocuklarının sosyal konumlarınının ve mizaçlarının\rcinsiyetlerine, anne ve babanın çalışma durumlarına, yaşadıkları eve ve aile tipine göre farklılaşmasının\rolup olmadığı Mann-Whitney U testiyle analiz edilmiştir. Okul öncesi dönem 5 yaş çocuklarının sosyal konumları ve mizaçlarının anne ve babalarının eğitim seviyesine, babaların mesleklerine ve kaç kardeş\rolduğuna ve doğum sırasına göre farklılaşıp farklılaşmadığı Kruskal-Wallis Testiyle analiz edilmiştir.\rYapılan bu analizler SPSS 20.0 paket programı ile gerçekleştirilmiştir. Analizlerin sonucunda okul öncesi\rdönem 5 yaş çocuklarının sosyal konum puanları ile sebatkârlık ve ritmiklik alt ölçek puanları arasında\rolumsuz ve anlamlı ilişkiler tespit edilmiştir. Erkeklerin sosyal konumları ve sebatkârlıkları kızlarınkinden\rdaha düşük olarak belirlenmiştir. Anne ve babanın eğitim seviyesine bağlı olarak sosyal konum ve\rsebatkârlık olumlu yönde tepkisellik olumsuz yönde anlamlı farklılaşma göstermiştir. Doğum sırasıyla\rtepkisellik arasında anlamlı farklılaşma olduğu görülmüştür. Geniş ailelerde yaşayan çocuklar çekirdek\railedeki çocuklardan daha sebatkâr bulunmuştur.
- MakaleAçık Erişim2021Determination of Some Heavy Metals in Oil Sunflower Seeds Grown in the North of Turkey
Kul, Sinan; Gül, Volkan
This study aims to determine some heavy metal contents (boron, aluminum, manganese, iron, cobalt, nickel, copper, zinc, cadmium, and lead) of eighteen sunflower seeds obtained from six regions in the Middle Black Sea Region where sunflower is grown. The ICP- MS device was used to determine the heavy metal concentrations in the study, and cadmium, and lead amounts in the samples examined at the end of the study were found in the range of 0-0.06 μg kg-1 and 0-1.07 μg kg-1, respectively. The highest heavy metal concentrations in all the examples were obtained as iron (13.14-61.04 μg kg-1), zinc (34.11-54.12 μg kg-1), copper (15.68-20.7 μg kg-1), and manganese (12.72-20.20 μg kg-1). These heavy metals were followed by boron (4.82-10.33 μg kg-1), aluminum (0-13.12 μg kg-1), and nickel (0.88- 7.74 μg kg-1). The lowest heavy metal concentration was cobalt (0.037-0.12 μg kg-1). As a result, the heavy metal concentrations found in the sunflower seeds grown in the Middle Black Sea region were lower than the limit values threading to human health.
AtıfOpenAlex5İncele - MakaleYalnız künye2021Foreign direct investment and the unemployment: a causality analysis for the brics countries
Arı, Ari
The paper examines the FDI-Unemployment nexus for BRICS countries using annual time series data covering the period of (1992-2018). The variables in the analysis were checked using Augmented Dickey Fuller test statistics. The results obtained indicated that all variables were stationary at first difference for all countries except South Africa which was found to be stationary at level. The results reveal that there is a co-integration relationship between the variables only for India. In other words, there is not a relationship between unemployment and FDI inflows for Brazil, China and Russia. According to Granger Causality Test results, there is a unidirectional causality link flowing from unemployment to FDI inflows for India. This finding is in line with the theory which states that foreign direct investments are attracted in countries where they observe the existence of available work force. The paper recommends that India should focus on designing policies for attracting the foreign investors due to the fact that India has an important potential in this domain
AtıfTR Dizin1İncele - Derleme MakaleAçık Erişim2021A potential antiviral and food-derived healthy ingredient: Resveratrol
Türkoğlu, Zehra; Arslaner, Ayla
Polyphenols are the secondary metabolites of plants and has an important role in human nutritionas the leading antioxidants. According to the carbon number-based classification of polyphenols,resveratrol is a natural polyphenol in the stilbene group with antioxidant and anticarcinogenic effects. Its beneficial effects on cardiovascular diseases have also been reported. It was first identified in 1940 and has recently gained importance especially in medicine and pharmacy. Researchershave carried out various studies on resveratrol and its time-honored use in traditional eastern medicine has been reported. Resveratrol is a food ingredient that has the potential to be used in thetreatment of various diseases, but also has antiviral effects. The study focuses on resveratrol’sphysical and chemical properties, effects on health, antiviral effects and use in foods as a functionalcomponent.
AtıfOpenAlex7İncele - MakaleAçık Erişim2021The stress analysis of a shear wall with matrix displacement method using rectangular finite element
Ates, Sevket; Ergün, Mustafa
The aim in this study is to numerically present some characteristic features of the rectangular finite elementusing the matrix displacement method and to show the utility of this element in plane stress problemscompared to the finite element method. The paper consisted of three parts. In the first part, all of the finiteelement formulation steps from choosing the convenient coordinate system to creating element stiffnessmatrix are presented respectively. In the second part of the study, a static finite element analysis of the shearwall is also made by ANSYS Mechanical APDL. In the final part, the results (displacements, strains andstresses) obtained from the previous parts are compared with each other by the help of tables and graphics.The results show that this method is effective and preferable for the stress analysis of shell structures. Furtherstudies should be conducted in order to indicate the efficiency of the matrix displacement method for thesolution of different types of plane stress problems using different finite elements.
- MakaleYalnız künye2021Examination of teacher candidates' perception of tourists
Degirmenci, Yavuz
In today's world, tourism is one of the areas that both countries and individuals are interested in.While tourism offers opportunities to countries in various aspects primarily in economic terms, it has always been an area of interest for individuals as well. The most important actors in this area are undoubtedly individuals, in other terms, tourists. On the other hand, individuals' perception of tourists, who are in interaction with nature, the environment and local elements, is considered to be of importance and it isthought that this perception may affect tourism activities in various terms. Therefore, the present study aims to examine the tourist perceptions of teacher candidates who took tourism classes during their undergraduate education. The study was carried out with 142 teacher candidates studying in the Department of Social Studies Teaching inthe Faculty of Education at a state university in Turkey in the spring semester of the 2019-2020 academic year. The qualitative phenomenology design was used in the study. The views and thoughts of the study group regarding the perception of tourists werecollected through an interview form consisting of a single sentence. The content analysis technique was used in the analysis of data. According to the findings obtained from the study, the participants produced a total of 75 valid metaphors related to theconcept of tourist. These metaphors were categorized based on their common properties (n=5). As a result of the study, it was determined that the highest frequency of metaphors related to the concept of tourist was produced under the category "tourist as an economic element" (n=43). Additionally, it was observed that the participants mostly associated tourists with metaphors such as money, bird, foreign currency, curious child and guest.
- MakaleYalnız künye2021What are The Financial and Technologic Determinants of Cryptocurrency Prices? The Case of Bitcoin
Gülhan, Ünal; Temurlenk, Mehmet Sinan
Blockchain is distributed database provides encrypted transaction tracking. Similarly, Crypto money or cryptocurrency can be defined as digital currency or asset designed as alternative exchange tool, which uses cryptography to secure transactions based onblockchain database systematic is traded like cash. Moreover, without having central control system and authority, Bitcoin attracts investors more and more with this feature. In this context, the importance of this study may well explain factors affectingcryptocurrency prices in Bitcoin specific. It is used while choosing variables that determine Bitcoin prices, not only financial and economic factors, but also Bitcoin mining and Bitcoin Google Trend Index. While electricity unit costs from variables are included in model design; It is thought that electrical energy costs consumed by CPUs and GPUs of computers used by Bitcoin miners may have impact on Bitcoin prices In this study, bitcoin prices were modeled primarily with Box-Jenkins method with using between 2015-2020 daily data. In this study, it has been conducted with chosen control variables which are Gold unit prices, oil prices, Euro / Dollar parity, S&P 500 Index, LIBOR, Bitcoin Google Trend Index and electricity unit costs were determined as control variables and their effect on bitcoin prices was analyzed based on the Box-Jenkins model. Box-Jenkins modelling is chosen because this model has more power on forecasting future values with using AR and MA process together.
- MakaleAçık Erişim2021The evaluation of internet usage habits and possible internet addiction and cyberbullying-victimization levels of self-destructive adolescents
Kocaman, Orhan; Sönmez, Yonca; Aktepe, Evrim; Özyay Eroğlu, Funda; Özen, Emel; Eroğlu, Yüksel
ObjectiveThis study aimed to evaluate internet usage habitsand possible internet addiction and the cyberbullying-victimization levels of adolescents who werefound to engage in self-destructive behaviors.Material and MethodsThis was a case-control study. This study includeda total of 206 adolescents between 14 and 18 yearsand they were examined under two groups as ‘self-destructive adolescents’ (n= 103) and ‘Control’ (n=103). The Self-Harm Behavior Questionnaire (SHBQ)was administered to 14- to 18-year-old adolescentsadmitted to our outpatient clinic. Then The InternetUsage Form (IUF), Internet Addiction Inventory (IAI),and Cyber Victim and Bullying Scale (CVBS) wereadministered to both groups.ResultsThe case group was found to use significantly moresocial networking sites, chatrooms, shopping websites,and instant messaging sites. The case group wasdetermined to use the internet significantly more toestablish communication and to access the internetsignificantly more every day. When the total scoresand subscale scores of CVBS of the groups wereexamined, the case group was determined to havesignificantly higher scores. The case group was foundto be significantly more possible internet addicts andto display significantly more risky internet behaviors.ConclusionsThe self-destructive adolescents in our study whouse the internet in risky ways and are at risk for internetaddiction show that this group is vulnerable tothe dangers of the virtual world. Taking this into consideration,examining the internet usage habits of self-destructive adolescents who are assessed in AdolescentMental Health Clinics would be a preventiveapproach.
- MakaleYalnız künye2021Examining the Covid-19 Pandemic from the Perspectives of Adolescents and Existential Theory
Kabakci, Omer Faruk; Yücel, Sümeyye; Aktaş, Emirhan; Taskin, Gulsah Maras
Although various studies have been carried out on the effects of the Covid-19 pandemic process, which has been going on for about two years, on individuals, no study has been found in Turkey on how individuals in adolescence are affected by this process and what they experience. In this study, it is aimed to deal with the experiences of individuals in adolescence regarding the Covid-19 pandemic according to the existential approach. In line with the purpose, the model of the study was determined as a case study. The study group consists of 36 adolescent participants who continue their education at different grade levels in a metropolitan city in Turkey in the fall semester of the 2020-2021 academic year. After obtaining the permission of the ethics committee for the research, a Semi-Structured Interview Form was used to collect data, and the interviews could be conducted face-to-face and/or online, taking into account the pandemic conditions. Content analysis method was used in the analysis of the data. According to the results obtained from the research, the participants' experiences of the Covid-19 pandemic were explained according to the themes of the four dimensions of individuals' existence (physical, social, personal and social). In the physical dimension, it was seen that there were reflections in terms of family, friends, relatives and social life in the physical and environmental, social dimension of the adolescents, anxiety, risk-taking and awareness in the personal dimension, and awareness of the values in the last dimension, the spiritual dimension. Considering that a change in one dimension may affect other dimensions, suggestions have been made for guidance and psychological counseling practices and researchers, especially for individuals in adolescence, where many changes are experienced.
- MakaleAçık Erişim2021Arum italicum Miller Bitkisinin Yenilebilir ve Yenmeyen Yumru Parçalarının LC–MS/MS ve RP–HPLC–UV Analizi ve Antioksidan Aktiviteleri
Can, Zehra; Akar, Zeynep; Demir, Çağlar; Alkan, Ozan; Akar, Bülent
Bu çalışmada, Arum italicum bitkisine ait yumrunun yenilebilir ve yenmeyen kısımlarından elde edilen metanolik ve sulu ekstraktların, fenolik içerikleri ve antioksidan aktiviteleri belirlenmiştir. Ek olarak, bitkinin bu kısımlarının antioksidan potansiyeli, fenolik kompoziyonu ile ilişkilendirilmiştir. Bitkinin antioksidan aktivitesini belirlemek için Toplam Fenolik Madde Miktarı, FRAP, CUPRAC ve radikal süpürme aktiviteyi belirleyen DPPH antioksidan aktivite testleri yapılmıştır. Bitki yumrusunun her iki kısmındaki fenolik profiller hazırlanan metanolik ekstraktlarında RP– HPLC–UV ve LC–MS/ MS cihazları kullanılarak belirlenmiştir. En yüksek toplam fenolik içerik, FRAP, CUPRAC ve % DPPH değerleri, yumrunun yenmeyen kısmının metanolik ekstraktında sırasıyla 164 µg GAE/mL, 878 TEAC(µM), 0.064 TEAC(µM) ve 19.41 olarak ölçülmüştür LC/MS-MS ölçümlerinde her iki yumru kısmının metanolik ekstraktlarında ferulik asit, ana fenolik bileşik olarak belirlendi. Bununla birlikte RP–HPLC–UV ölçümlerinde ise, bitki yumrusunun yenilebilir ve yenilmeyen kısımlarında sırasıyla luteolin ve rutin fenolikleri ana bileşikler olarak ölçülmüştür.
AtıfOpenAlex6TR Dizin4İncele - MakaleAçık Erişim2021Molecular Approach to Detecting Pollen Types In Honey: DNA Barcoding
Ecem Bayram, Nesrin
Nowadays, the demand for bee products has also increased due to the growing interest in natural products. Althoughit is quite easy to adulteration of honey, which is one of these products, it is also very difficult to detect adulteration.In the point of detecting forgery, studies are being carried out specifically to identify the plant sources of honey.Melissopalynological and chemical analyses are methods commonly used in order to identify the botanical origin of honey.Despite the fact that the detection of botanical origin of honey by DNA-based methods which provide faster, simpler andmore reliable results are being carried out in recent years, these researches are very less in Turkey. Unlike morphologicalmethods, which require the visual examination of pollen grains, the recently developed genetic methods have the potentialto increase the resolution and scale of pollen analyses. In this study, the aim was to present cumulative data by compilingthe results of the studies conducted using molecular techniques on honey, and the advantages and disadvantages of thistechnique were evaluated.
AtıfOpenAlex1İncele - MakaleAçık Erişim2021The Impact of Terrorism on Foreign Direct Investment: The Case of Turkey
Arı, Ari; Ibrahim, Bello
Foreign Direct Investment (FDI) is a key source of foreign exchange, new jobs and bleeding-edgetechnology transfers for the developing countries. However, terrorist attacks in a country are an importantfactor determining the preferences of companies in investing abroad.Turkey has been facing both internal and external terrorist groups’ attacks since the late 1980s. In thiscontext, this study discussed the impact of terrorism on FDI inflows in Turkey for the period 1990-2019.Autoregressive Distributed Lag (ARDL) bounds testing approach to co-integration was used in the study.The study revealed that terrorism affects FDI in Turkish economy positively and not significantly in theshort-run, while negatively and significantly in the long-run. Furthermore, the impact of some supportivevariables- inflation, trade openness, military expenditure and remittances on FDI and terrorism in themodel was also examined in the paper. The results concluded that trade openness shows a negative andsignificant impact on FDI both in the short-run and long-run. Remittances shows a negative and significantresult. This indicate that there is a short-run negative relationship between remittances and FDI. Inflationshows a positive but not a significant impact on FDI, and military expenditure also shows a negative andnon-significant impact in the short run, which normally has to be positive.
AtıfOpenAlex3TR Dizin2İncele - MakaleAçık Erişim2021Corporate Sustainability Performance Assessment: CRITIC-ARAS Integrated Model
Ag, Aliriza; Özkan, Tuba
In today's world, businesses struggle to survive in an intense competitive environment as a result of changes and developments that occur due to globalization. In this competitive environment, the importance of not only economic indicators but also social indicators is increasing day by day for businesses to gain competitive advantage. Therefore, businesses will be able to reveal their competitive advantage in their economic, social and environmental aspects in their sustainability reports. In this context, the main purpose of corporate sustainability and sustainability accounting is to meet the information needs of the business stakeholders and to measure and evaluate the corporate performances of the enterprises as a result of their activities for sustainability purposes.In today's world, businesses struggle to survive in an intense competitive environment as a result of changes and developments that occur due to globalization. In this competitive environment, the importance of not only economic indicators but also social indicators is increasing day by day for businesses to gain competitive advantage. Therefore, businesses will be able to reveal their competiti-ve advantage in their economic, social and environmental aspects in their sustainability reports. In this context, the main purpose of corporate sustainability and sustainability accounting is to meet the information needs of the business stakeholders and to measure and evaluate the corporate perfor-mances of the enterprises as a result of their activities for sustainability purposes.The aim of this study was to evaluate the corporate sustainability performance of the companies registered at Borsa İstanbul, operating in the production sector, as per various economic, environmental, and social indicators. An algorithm based on the integrated use of CRITIC and ARAS methods was used in the performance assessment of businesses, and corporate sustainability performance ranking results were presented. The CRITIC method, which is one of the objective weighting methods, was used to de-termine the weight of the criteria, while the ARAS method was used to determine the performance rankings of alternatives. As a result of the analysis in terms of corporate sustainability, OTKAR has been determined as the company with the best economic performance, AYGAZ with the best environmental performance, and KERVT with the best social performance.
AtıfOpenAlex12TR Dizin8İncele - MakaleAçık Erişim2021The Adaptation of the Connor‒Davidson Resilience Scale Short Forminto Turkish: A Validity and Reliability Study
Kaya, Feridun; Odaci, Hatice
The aim of this research is to adapt the Connor-Davidson Resilience Scale Short Form (CDRSSF) into Turkish and perform validity and reliability studies on it. The research group comprised 1211 university students. Data collection tools included the CDRSSF, CES Depression Scale, Self-Esteem Scale, and Perceived Stress Scale. The exploratory factor analysis results revealed that the scale has a single-factor structure. A confirmatory factor analysis was completed to confirm the structure determined by the exploratory factor analysis. The same appeared to confirm this structure. A correlation analysis results was performed to identify the criteria-dependent validity in the research. The results show a negative correlation between the psychological resilience levels of university students with perceived stress and depression levels. However, there was a positive correlation observed between psychological resilience with self-esteem. The internal consistency coefficient was found to be 0.81 within the scope of reliability studies for the scale. Two half-test correlations of the scale was documented as 0.78. The results of the research show that the CDRSSF is a valid and reliable measurement device to measure the psychological resilience of university students.
AtıfOpenAlex44TR Dizin8İncele