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Article Citation - WoS: 19Citation - Scopus: 25How Destructive Are Negative Tourist-To Interactions Despite the Mitigating Effect of Optimism?(Elsevier, 2022) Koc, Burcu; Kucukergin, Kemal Gurkan; Dimanche, FredericThis study examined the relationship between negative tourist-to-tourist interaction (NTTI) and tourist emotions, intention to recommend, and revisit intention, based on the stimulus-organism-response paradigm and service dominant logic. It also investigated the moderating effect of optimism in the relationship between NTTI and tourist emotions to highlight the importance of optimism in tourist behavior in COVID-19 times. Data were collected through a survey form from 256 domestic tourists visiting Pamukkale travertines and archaeological site, one of Turkey's leading attractions. The research hypotheses were tested using Partial Least Squares Structural Equation Modeling. The data analysis revealed that NTTI significantly affects tourist emotions. Unpleasantness had a negative and significant effect on intention to recommend, while joy had a positive and significant effect. Besides, joy and positive surprise affected revisit intention positively and significantly. Joy and unpleasantness mediated the relationship between NTTI and intention to recommend. Finally, optimism moderated the relationships between NTTI and joy and NTTI and positive surprise.Article Citation - WoS: 2Citation - Scopus: 2Social and Economic Indicators of Household Income in Turkey: Does Ethnicity Matter?(Springer, 2018) Toros, Emre; Cilasun, Seyit; Toros, AykutIn Turkey, the GDP per capita of eastern regions, where the Kurdish population is dense, is significantly lower than that of the rest of the country. The aim of this paper is to provide a quantitative analysis to investigate the contribution of household characteristics and regional disparities on racial/ethnic inequalities in household income, particularly across Turks and Kurds. Based on the results of regression-based decomposition analyses, there exist significant income differences between Turks and Kurds. However, this difference significantly diminishes if the household head is working. It is also observed that the household income increases with education, while decreases with migration and being settled in economically disadvantaged regions. Results also indicate that differential returns to Turks and Kurds on observable characteristics are lower in higher income quintilesArticle Citation - WoS: 15Citation - Scopus: 17Pei Modifiednatural Sands of Florida as Catalysts for Hydrogen Production From Sodium Borohydride Dehydrogenation in Methanol(Wiley-hindawi, 2021) Inger, Erk; Demirci, Sahin; Can, Mehmet; Sunol, Aydin K.; Philippidis, George; Sahiner, NurettinSand samples from Tampa (T) and Panama (P) City beaches in Florida were used as catalysts for dehydrogenation of NaBH4 in methanol. T and P sand samples were sieved to <250, 250 to 500, and >500 mu m sizes, and the smallest fractions resulted in faster hydrogen generation rates (HGR), 565 +/- 18 and 482 +/- 24 mL H-2 (min.g of catalyst)(-1), respectively. After various base/acid treatments, HGR values of 705 +/- 51 and 690 +/- 47 mL H-2 (min g of catalyst)(-1) for HCl-treated T and P sand samples were attained, respectively. Next, T and P sand samples were modified with polyethyleneimine (PEI) that doubled the HGR values, 1344 +/- 103, and 1190 +/- 87 mL H-2 (min.g of catalyst)(-1) and increased similar to 8-fold, 4408 +/- 187, and 3879 +/- 169 mL H-2 (min g of catalyst)(-1), correspondingly after protonation (PEI+). The Ea values of T and P sand samples were calculated as 24.6 and 25.9 kJ/mol, and increased to 36.1, and 36.6 kJ/mol for T-PEI(+)and P-PEI(+)samples, respectively.Article Citation - WoS: 5Citation - Scopus: 5Aptamer decorated PDA@magnetic silica microparticles for bacteria purification(Springer Wien, 2024) Kavruk, Murat; Babaie, Zahra; Kibar, Gunes; Cetin, Barbaros; Yesilkaya, Hasan; Amrani, Yassine; Ozalp, V. CengizOne significant constraint in the advancement of biosensors is the signal-to-noise ratio, which is adversely affected by the presence of interfering factors such as blood in the sample matrix. In the present investigation, a specific aptamer binding was chosen for its affinity, while exhibiting no binding affinity towards non-target bacterial cells. This selective binding property was leveraged to facilitate the production of magnetic microparticles decorated with aptamers. A novel assay was developed to effectively isolate S. pneumoniae from PBS or directly from blood samples using an aptamer with an affinity constant of 72.8 nM. The capture experiments demonstrated efficiencies up to 87% and 66% are achievable for isolating spiked S. pneumoniae in 1 mL PBS and blood samples, respectively.Article Citation - WoS: 11Citation - Scopus: 18Prospects of Ocean-Based Renewable Energy for West Africa's Sustainable Energy Future(Emerald Group Publishing Ltd, 2021) Adesanya, Ayokunle; Misra, Sanjay; Maskeliunas, Rytis; Damasevicius, RobertasPurpose The limited supply of fossil fuels, constant rise in the demand of energy and the importance of reducing greenhouse emissions have brought the adoption of renewable energy sources for generation of electrical power. One of these sources that has the potential to supply the world's energy needs is the ocean. Currently, ocean in West African region is mostly utilized for the extraction of oil and gas from the continental shelf. However, this resource is depleting, and the adaptation of ocean energy could be of major importance. The purpose of this paper is to discuss the possibilities of ocean-based renewable energy (OBRE) and analyze the economic impact of adapting an ocean energy using a thermal gradient (OTEC) approach for energy generation. Design/methodology/approach The analysis is conducted from the perspective of cost, energy security and environmental protection. Findings This study shows that adapting ocean energy in the West Africa region can significantly produce the energy needed to match the rising energy demands for sustainable development of Nigeria. Although the transition toward using OBRE will incur high capital cost at the initial stage, eventually, it will lead to a cost-effective generation, transmission, environmental improvement and stable energy supply to match demand when compared with the conventional mode of generation in West Africa. Originality/value The study will contribute toward analysis of the opportunities for adopting renewable energy sources and increasing energy sustainability for the West Africa coast regions.Article Citation - WoS: 23Citation - Scopus: 25Evaluation of the Efficiency of the Nursing Care Plan Applied Using Nanda, Noc, and Nic Linkages To Elderly Women With Incontinence Living in a Nursing Home: a Randomized Controlled Study(Wiley, 2018) Gencbas, Dercan; Bebis, Hatice; Cicek, HaticePURPOSE: Evaluate the efficiency of the nursing care plan, applied with the use of NANDA-I, NOC, and NIC (NNN) linkages, for elderly women with incontinence who live in nursing homes. METHODS: A randomized controlled experimental design was applied. NNN linkages were prepared and applied for 12 weeks in an experimental group. NOC scales were evaluated again for two groups. RESULTS: A 0.5 NOC point change targeted in all elderly in the experimental group were provided between pretest-posttest scores. The experimental group had higher life quality and lower incontinence severity/symptoms than the control group. CONCLUSION: It is important that NNN linkages effective for solving the problems are used in different groups and with larger samples to create further evidence linking NNN.Article Citation - WoS: 6Citation - Scopus: 8Discussion on α-strictly Contractive Nonself Multivalued Maps(Springer Singapore Pte Ltd, 2016) Ali, Muhammad Usman; Kamran, Tayyab; Karapinar, ErdalIn this paper, we introduce the notions of alpha-contractive condition and strict alpha-admissibility for nonself multivalued mappings. By using these notions, we prove fixed point theorems for nonself multivalued mappings. We also construct an example to support our result.Article Citation - WoS: 6Citation - Scopus: 6Al/Cdse Resonant Tunneling Thin Film Transistors(Elsevier Science Bv, 2017) Qasrawi, A. F.; Kayed, T. S.; Elsayed, Khaled A.An Al/CdSe/GaSe/C thin film transistor device was prepared by the physical vapor deposition technique at a vacuum pressure of 10(-5) mbar. The x-ray diffraction measurements demonstrated the polycrystalline nature of the surface of the device. The de current-voltage characteristics recorded for the Al/CdSe/C and Al/CdSe/GaSe/C channels displayed a resonant tunneling diode features during the forward and reverse voltage biasing, respectively. In addition, the switching current ratio of the Al/CdSe/C increased from 18.6 to 9.62x10(3) as a result of the GaSe deposition on the CdSe surface. Moreover, the alternating electrical signal analyses in the frequency range of 1.0 MHz to 1.8 GHz, showed some remarkable properties of negative resistance and negative capacitance spectra of the AVCdSe/GaSe/C thin film transistors. Two distinct resonance-antiresonance phenomena in the resistance spectra and one in the capacitance spectra were observed at 0.53, 1.04 and 1.40 GHz for the Al/CdSe/C channel, respectively. The respective resonating peak positions of the resistance spectra shift to 0.38 and 0.95 GHz when GaSe is interfaced with CdSe. These features of the thin film transistors are promising for use in high quality microwave filtering circuits and also for use as ultrafast switches.Article Dynamic Market Efficiency Assessment in Sustainability Indices: Rolling Fractional Integration Analysis with Multiple Estimators(Elsevier, 2025) Gonul, Ibrahim Omer; Omay, TolgaThis study develops a comprehensive econometric framework for assessing market efficiency in sustainability indices through rolling fractional integration analysis. We employ four fractional integration estimators (Andrews-Guggenberger, Robinson GSE, GPH, and FELW) with formal statistical testing, addressing critical methodological gaps including single estimator dependency and static analysis approaches. Applied to 17 sustainability indices across 13 countries, our results reveal significant heterogeneity in market efficiency evolution. Developed markets exhibit timevarying efficiency patterns with periodic inefficiencies driven by institutional rebalancing dynamics, while emerging markets demonstrate superior efficiency characteristics. The BIST Sustainability Index exhibits exceptional efficiency, while the SP 500 ESG Screened Index shows the highest inefficiency levels among developed markets. The convergent validity between fractional integration and traditional unit root tests provides robust methodological validation. Our findings establish unprecedented robustness in sustainability market efficiency research while providing policy implications for financial regulators and investment managers.Article Citation - WoS: 6Citation - Scopus: 6Some Extensions of Fixed Point Results Over Quasi-js-spaces(Hindawi Ltd, 2016) Noorwali, Maha; Alsulami, Hamed H.; Karapinar, ErdalWe introduce the notion of quasi-JS-metric space. After defining the basic topological properties of quasi-JS-metric space, we investigate fixed point of certain mapping in the frame of complete quasi-JS-metric space. Our results unify and cover several existing fixed point theorems in distinct structures (such as standard quasi-metric spaces, quasi-b-metric spaces, dislocated quasi-metric spaces, and quasi-modular spaces) in the literature.
