WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12514/3595

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Adaptation of the Vicarious Resilience Scale To Turkish: a Validity and Reliability Study
(American Psychological Association, 2025) Topçu, F.; Boz, C.; Şeneldir-Patolo, A.; Kitapçıoğlu, S.; Işıker-Bedir, D.; Sanyar, S.
Objective: The 27-item Vicarious Resilience Scale (VRS) is the first tool developed to measure vicarious resilience in mental health professionals working with trauma survivors. Given that the VRS measures the positive impact on therapists resulting from observing the healing process of trauma victims, it is especially significant to evaluate its validity and reliability in Turkish culture. This study aims to adapt the VRS to Turkish and examine its psychometric properties. Method: VRS was adapted and administered via electronic survey to 337 mental health professionals from around the globe working with survivors of severe traumas, such as earthquake survivors. The validity of the VRS was examined using different techniques: confirmatory factor analysis (CFA) and criterion-related validity. Results: CFA yielded seven factors that were consistent with the original form: changes in life goals and perspective, client-inspired hope, increased recognition of clients’ spirituality as a therapeutic resource, increased capacity for resourcefulness, increased self-awareness and self-care practices, increased consciousness of power and privilege relative to clients’ social location, and increased capacity for remaining present while listening to trauma narratives. The Cronbach’s α reliability of the VRS was found to be.95; it displayed positive correlations with posttraumatic growth, psychological resilience, and quality of life, indicating convergent validity. However, it had a negative correlation with depression, anxiety, and stress, indicating discriminant validity. Conclusion: The VRS is a valid and reliable measurement scale by professionals working with trauma survivors to aid the recognition and cultivation of vicarious resilience in Turkish mental health professionals. © 2025 American Psychological Association
Adolescent Transport and Unintentional Injuries: a Systematic Analysis Using the Global Burden of Disease Study 2019
(Elsevier Sci Ltd, 2022) Peden, Amy E.; Cullen, Patricia; Francis, Kate Louise; Moeller, Holger; Peden, Margaret M.; Ye, Pengpeng; Ivers, Rebecca Q.
Background Globally, transport and unintentional injuries persist as leading preventable causes of mortality and morbidity for adolescents. We sought to report comprehensive trends in injury-related mortality and morbidity for adolescents aged 10-24 years during the past three decades. Methods Using the Global Burden of Disease, Injuries, and Risk Factors 2019 Study, we analysed mortality and disability-adjusted life-years (DALYs) attributed to transport and unintentional injuries for adolescents in 204 countries. Burden is reported in absolute numbers and age-standardised rates per 100 000 population by sex, age group (10-14, 15-19, and 20-24 years), and sociodemographic index (SDI) with 95% uncertainty intervals (UIs). We report percentage changes in deaths and DALYs between 1990 and 2019. Findings In 2019, 369 061 deaths (of which 214337 [58%] were transport related) and 31.1 million DALYs (of which 16.2 million [52%] were transport related) among adolescents aged 10-24 years were caused by transport and unintentional injuries combined. If compared with other causes, transport and unintentional injuries combined accounted for 25% of deaths and 14% of DALYs in 2019, and showed little improvement from 1990 when such injuries accounted for 26% of adolescent deaths and 17% of adolescent DALYs. Throughout adolescence, transport and unintentional injury fatality rates increased by age group. The unintentional injury burden was higher among males than females for all injury types, except for injuries related to fire, heat, and hot substances, or to adverse effects of medical treatment. From 1990 to 2019, global mortality rates declined by 34.4% (from 17.5 to 11.5 per 100 000) for transport injuries, and by 47.7% (from 15.9 to 8.3 per 100000) for unintentional injuries. However, in low-SDI nations the absolute number of deaths increased (by 80.5% to 42 774 for transport injuries and by 39.4% to 31 961 for unintentional injuries). In the high-SDI quintile in 2010-19, the rate per 100 000 of transport injury DALYs was reduced by 16.7%, from 838 in 2010 to 699 in 2019. This was a substantially slower pace of reduction compared with the 48.5% reduction between 1990 and 2010, from 1626 per 100 000 in 1990 to 838 per 100 000 in 2010. Between 2010 and 2019, the rate of unintentional injury DALYs per 100 000 also remained largely unchanged in high-SDI countries (555 in 2010 vs 554 in 2019; 0.2% reduction). The number and rate of adolescent deaths and DALYs owing to environmental heat and cold exposure increased for the high-SDI quintile during 2010-19. Interpretation As other causes of mortality are addressed, inadequate progress in reducing transport and unintentional injury mortality as a proportion of adolescent deaths becomes apparent. The relative shift in the burden of injury from high-SDI countries to low and low-middle-SDI countries necessitates focused action, including global donor, government, and industry investment in injury prevention. The persisting burden of DALYs related to transport and unintentional injuries indicates a need to prioritise innovative measures for the primary prevention of adolescent injury. Copyright (C) 2022 The Author(s). Published by Elsevier Ltd.
Analysis and Mitigation of Power Quality Issues in Distributed Generation Systems Using Custom Power Devices
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2018) Hossain, Eklas; Tur, Mehmet Rida; Padmanaban, Sanjeevikumar; Ay, Selim; Khan, Imtiaj
This paper discusses the power quality issues for distributed generation systems based on renewable energy sources, such as solar and wind energy. A thorough discussion about the power quality issues is conducted here. This paper starts with the power quality issues, followed by discussions of basic standards. A comprehensive study of power quality in power systems, including the systems with dc and renewable sources is done in this paper. Power quality monitoring techniques and possible solutions of the power quality issues for the power systems are elaborately studied. Then, we analyze the methods of mitigation of these problems using custom power devices, such as D-STATCOM, UPQC, UPS, TVSS, DVR, etc., for micro grid systems. For renewable energy systems, STATCOM can be a potential choice due to its several advantages, whereas spinning reserve can enhance the power quality in traditional systems. At Last, we study the power quality in dc systems. Simpler arrangement and higher reliability are two main advantages of the dc systems though it faces other power quality issues, such as instability and poor detection of faults.
Ancient DNA from Mesopotamia suggests distinct Pre-Pottery and Pottery Neolithic migrations into Anatolia
(Science, 2022) Acar, Ayşe; Lazaridis, Iosif; Alpaslan-Roodenberg, Songül; Açıkkol, Ayşen; Agelarakis, Anagnostis; Davtyan, Ruben
We present the first ancient DNA data from the Pre-Pottery Neolithic of Mesopotamia (Southeastern Turkey and Northern Iraq), Cyprus, and the Northwestern Zagros, along with the first data from Neolithic Armenia. We show that these and neighboring populations were formed through admixture of pre-Neolithic sources related to Anatolian, Caucasus, and Levantine hunter-gatherers, forming a Neolithic continuum of ancestry mirroring the geography of West Asia. By analyzing Pre-Pottery and Pottery Neolithic populations of Anatolia, we show that the former were derived from admixture between Mesopotamian-related and local Epipaleolithic-related sources, but the latter experienced additional Levantine-related gene flow, thus documenting at least two pulses of migration from the Fertile Crescent heartland to the early farmers of Anatolia.
Antioxidant Properties of allium Turcicum Özhatay & Cowley Plant Extract, Its Effects on the Proliferation and Migration of Cancer Cells
(Frontiers Media Sa, 2024) Ipek, Polat; Baran, Ayse; Cebe, Deniz Baris; Ahmadian, Elham; Eftekhari, Aziz; Baran, Mehmet Firat
Cancer is a type of non-communicable disease that is responsible for numerous deaths worldwide. Cancer incidence and mortality rates are on the rise due to a combination of factors, such as a growing population, aging, and poor dietary habits. The Allium turcicum & Ouml;zhatay & Cowley plant is an endemic plant in the area where it grows and is consumed by the public due to its various benefits. This endemic plant, which generally grows in high-altitude regions, is sold in bunches because it is costly, mixed with rock salt, crushed into powder, and consumed as a spice. The cytotoxic and growth-inhibitory effects of A. turcicum & Ouml;zhatay & Cowley herb extract on human glioblastoma U373 cells, human colorectal carcinoma cell HCT-116, and healthy HUVEC cell lines were determined by the MTT method. After 24 and 48 h of application, logIC50 values in HUVEC, HCT-116, and U373 cells were defined as 3.737, 3.765; 3.513, 3.696, 4.476, and 4.104 mu g/mL, respectively. We conducted a cell migration experiment to study the A. turcicum & Ouml;zhatay & Cowley Extract (AT & Ouml;CE) impact on cancer cells' metastatic behavior. Our findings indicate that AT & Ouml;CE has an inhibitory effect on the migration potential of the cells used in the study. We conducted experiments using DPPH, ABTS, CUPRAC, and total phenolic content to assess the antioxidant properties of AT & Ouml;CE. The findings from the antioxidant activity experiments revealed an activity level of 0.20 +/- 0.046 at IC50. Additionally, the total phenolic content was measured to be 0.26 +/- 0.044 mg GAE/g.
An Assessment of Intermittent and Continuous Enteral Feeding in Critically Ill Children
(Mdpi, 2025) Misirlioglu, Merve; Yildizdas, Dincer; Ekinci, Faruk; Akcay, Nihal; Bingol, Ilyas; Sahin, Ebru; Coban, Yasemin
Background: The inability to ensure adequate nutrition for patients, and failure to provide adequate calorie and protein intake, result in malnutrition, leading to increased morbidity and mortality. The present study assesses the two approaches to enteral nutrition-intermittent and continuous enteral feeding-in critically ill pediatric patients in T & uuml;rkiye to determine the superiority of one method over the other. Methods: Included in this multicenter prospective study were patients receiving enteral nutrition via a tube who were followed up over a 3-month period. Anthropometric data, calorie and protein intake, and signs of feeding intolerance were evaluated in a comparison of the different feeding methods. Results: A total of 510 patients were examined. In the continuous enteral feeding (CEF) group, 20.2% of patients developed metabolic abnormalities, and 49.5% experienced enteral nutrition intolerance, both of which were higher than in the intermittent enteral feeding (IEF) group, and the differences were statistically significant. No significant differences were observed between the two feeding methods in terms of reaching the target calorie intake on days 2 and 7 (p > 0.05). On day 7, there were significant differences between the two feeding methods in terms of calorie and protein intake (p = 0.023 and 0.014, respectively). Conclusions: In the present study, assessing the IEF and CEF approaches to enteral nutrition, critically ill pediatric patients receiving intermittent feeding exhibited lower rates of enteral nutrition intolerance and metabolic abnormalities. Furthermore, the calorie and protein intake on day 7 were noted to be higher in the IEF group than in the CEF group. Further randomized controlled trials are needed to confirm the findings of the present study.
Attitudes promoting coping with death anxiety among parents of children with disabilities
(Taylor and Francis Online, 2021) Kaçan, Havva; Sakız, Halis; Bayram Deger, Vasfiye
We investigated death anxiety among parents of children with disabilities and its associations with coping attitudes and psycho-demographic factors. Surveys were administered to 382 parents of children who possess a severe disability and data were analyzed via descriptive and inferential statistics. Findings revealed that parents experienced high levels of death anxiety; the level of death anxiety changed according to some psycho-demographic factors, such as external support, type of disability, and death-related beliefs; and death anxiety was significantly explained by demographic variables, death-related thoughts, and experiences, and adaptive and maladaptive coping attitudes.
Bibliometric mapping of mobile learning
(Telematics and Informatics, 2021) Göksu, İdris
This study aims to reveal the tendency towards research in the field of mobile learning with the analysis of co-authorship, bibliographic coupling, co-occurrence, and citation by taking into consideration of author, publication, keyword, journal, country, university and citation variables. As of September 2019, the meta-data of a total of 5167 studies in the Web of Science database constituted the scope of this study. VOSviewer and sciMAT were used for the bibliometric analysis while Harzing's Publish and Perish software was used for the h-index. As a result of the bibliometric analysis, it was concluded that the most effective countries in mobile learning are Taiwan, USA, China, and England. According to the keyword co-occurrence analysis, mobile devices, higher education, mobile technologies, tablet, and smartphone keywords stand out in the field of mobile learning. Within the period of 2015–2019, trending topics were broadly educational technologies and, more specifically, tablets, mobile phones, MOOCs and learning strategies. It was found that G. J. Hwang is the most influential researcher and National Taiwan University of Science and Technology is the most influential university. It can be concluded that the most effective researches are augmented reality, higher education, and smartphone oriented mobile learning researches. According to the analyses conducted in the context of journals, Computers & Education, British Journal of Educational Technology and Educational Technology & Society were the most contributing journals
Boletus edulis loaded with gamma-Fe2O3 nanoparticles as a magnetic sorbent for preconcentration of Co(II) and Sn(II) prior to their determination by ICP-OES
(SPRINGER WIEN, 2018) Özdemir, Sadin; Yalçın, M. Serkan; Kılınç, Ersin; Soylak, Mustafa
The authors show that the fungus Boletus edulis loaded with gamma-Fe2O3 nanoparticles is a viable sorbent for magnetic solid phase extraction of trace levels of Co(II) and Sn(II). The surface structure of immobilized magnetized B. edulis was characterized by FT-IR, SEM and EDX. Experimental parameters were optimized. Following elution with 1 M HCl, the ions were quantified by ICP-OES. The limits of detection are 21 pg.mL(-1) for Co(II), and 19 pg.mL(-1) for Sn(II). The preconcentration factors are 100 for both ions. The sorption capacities of the sorbent are 35.8 mg.g(-1) for Co(II) and 29.6 mg.g(-1) for Sn(II). The method was applied to the analysis of certificated reference materials and gave >= 95% recoveries with low RSDs. It was also successfully applied to the quantification of Co(II) and Sn(II) in spiked environmental and food samples.
A cat skeleton from the balatlar church excavation, sinop, Turkey
(MDPI AG, 2021) Sıddıq, Abu Bakar; Onar, Vedat; Köroğlu, Gülgün; Armutak, Altan; Öncü, Öğül Emre; Chrószcz, Aleksander
In the 2015 excavation season, an east–west oriented burial (2015-Grave-14) built with large dimension stone blocks was unearthed on the south edge of “Area IVi” at the Balatlar Church in Sinop, on the northeastern Black Sea coast of Turkey. In this grave, which is dated between the end of the 6th century AD and the first half of the 7th century AD, a human skeleton was found with the head to the west and a cat skeleton was carefully placed next to the right femur. This study on the burial and the cat skeleton within it shows that, compared to the Roman period, the status of cats reached a higher level during the Byzantine period. It was found that alongside of being a pet, the Balatlar cat was a young healthy female individual that instinctively hunted rodents and birds, given that the remains of a rat and a sparrow were found in the region of the abdominal cavity, corresponding with the stomach location in the living animal. The grave presents the most significant direct archaeological evidence of a pet–human bond recorded at any Byzantine site so far.
Changes in volatile compounds, sugars and organic acids of different spices of peppers (Capsicum annuum L.) during storage
(FOOD CHEMISTRY, 2020) Korkmaz, Aziz; Atasoy, Ahmet Ferit; Hayaloglu, Ali Adnan
Changes in sugars, organic acids and volatile compounds (VC) of red pepper flakes (RPF), traditional (TRI), and industrial (INI) isot peppers were evaluated during one year storage at the room condition. The changes in the flavor components were significantly affected by the production methods and storage time. Glucose content decreased gradually along storage and reduced by about 21.23, 47.22 and 56.65% for TRI, INI and RPF, respectively. However, fructose decreased significantly only in RPF (11.29%). Citric and succinic acids exhibited slight changes, but malic acid showed an increasing trend, especially in RPF (4-fold). Most of the VC in all samples decreased or disappeared after storage. The major quantitative losses in these compounds were found in TRI during the first 3 months as 81.76%. The storage was found to be caused deterioration flavor properties in red pepper spices and revealed the importance of appropriate storage conditions.
Characterization and Bioremediation Potential of Heavy-Metal Resistant Bacteria Isolated From Agricultural Soil
(Tubitak Scientific & Technological Research Council Turkey, 2024) Dahnoun, Kheira; Djadouni, Fatima; Essghaier, Badiaa; Naccache, Chahnez; Zitouna, Nadia; Zehdi-Azouzi, Salwa; Bourguiba, Hedia
Heavy metal pollution is a major environmental issue that has a negative impact on soil quality and food security. As result, heavy metal removal or remediation from hazardous sites has become mandatory. Bioremediation based on microorganisms is promising method to remediate heavy metal-contaminated areas due to its ecofriendly, cost-effective, and highly efficient characteristics. This study aimed to isolate, identify, and characterize rhizospheric bacteria able to resist, reduce, and detoxify heavy metals [chromium (Cr), nickel (Ni), and aluminum (Al)] from agricultural soil. Two isolates were chosen due to their high level of heavy metal resistance and could serve as potential in situ remediation agents at the site of isolation. On the basis of morphological, cultural, biochemical, and molecular characterization, these two isolates were identified as Pseudomonas aeruginosa (S1) and Bacillus cereus (S2). The results revealed a minimum inhibitory concentrations (MICs) of the three heavy metals studied, ranging from 1000 to 1400 mu g/mL for the two bacterial isolates. Atomic absorption spectroscopy analysis was used to evaluate the degrading potential. B. cereus was able to reduce Cr and Al more than P. aeruginosa (42% and 67.78% vs. 38.44% and 58.85, respectively). On the other hand, P. aeruginosa showed a higher capacity to degrade Ni than B. cereus (62.33% and 50.76%, respectively). The findings of the analysis revealed information regarding the use of these heavy metal-resistant bacterial isolates as potential bioremediation agents in contaminated environments. Microbial bioremediation offers sustainable alternatives to the traditional physical or chemical remediation technologies of agricultural land.
Characterization and pathogenicity of Pythium-like species associated with root and collar rot of kiwifruit in Turkey
(In Plant Disease, 2021) Türkkan, Muharrem; Özer, Göksel; Karaca, Gürsel; Erper, İsmail; Derviş, Sibel
During the period of June to October in 2018, a widespread decline was observed on kiwifruit vines in the vineyards located in Altınordu, Fatsa, and Perşembe districts of Ordu province. The symptoms were associated with reddish-brown rots expanding from the root to the collar with sparse off-color foliage. Based on the percentage of the total infected samples across 18 vineyards, the most common oomycete species were Globisporangium intermedium (37.1%), Phytopythium vexans (34.3%), G. sylvaticum (14.3%), G. heterothallicum (11.4%), and Pythium dissotocum (2.9%). The morphological identification of isolates was confirmed based on partial DNA sequences containing the nuclear rDNA internal transcribed spacer region (rDNA ITS) and the mitochondrial cytochrome c oxidase subunit II (coxII) gene. The optimum growth temperature and the optimum pH of 5 species ranged from 22.98 to 28.25°C and 5.67 to 8.51, respectively. Pathogenicity tests on the seedlings of kiwifruit cv. Hayward revealed significant differences in virulence among isolates. Phytopythium vexans and G. sylvaticum isolates caused severe root and collar rot resulting in seedling death, while G. heterothallicum and G. intermedium isolates had relatively lower virulence. All Globisporangium spp. and P. vexans isolates significantly decreased plant growth parameters (plant height, shoot and root dry weights and root length); however, P. dissotocum caused very mild symptoms and did not affect these parameters of growth. To our knowledge, this is the first study reporting G. sylvaticum, G. heterothallicum, and G. intermedium causing root and collar rot on kiwifruit not only in Turkey but also in the world.
The Cittaslow Philosophy in the Context of Sustainable Tourism Development; The Case of Turkey
(Tourism Management, 2014) Ekinci, Mehmet Behzat
This paper studies the Cittaslow (slow city) philosophy in terms of sustainable tourism development (STD); and in this context research was undertaken for the case of Turkey. Cittaslow, a movement rooted in STD philosophy, aims to encourage the development of tranquil cities already known for their historical, natural, socio-cultural, and touristic features and the intention is to offer a significant contribution to systematic and rapid implementation of STD on a global scale. This paper, which makes a particular study of the practice of STD in Turkey, offers new candidate cities (Uzungöl, Hasankeyf, Safranbolu, Ürgüp, and İznik) and, thus, endeavours to contribute to the spread of STD throughout the whole country. In this study, above-named cities were found to be particularly good candidates for Cittaslow membership. In addition to these: Tatvan, Midyat, Alanya, and Fethiye were also found to be potential Cittaslows even though they fail to meet the population criterion.
Comparative and competitive adsorption of gaseous toluene, ethylbenzene, and xylene onto natural cellulose-modified Fe3O4 nanoparticles
(ScienceDirect, 2022) Ece, Mehmet Şakir; Kutluay, Sinan
Many industrial processes produce volatile organic compound (VOC) pollutants within multicomponent systems. Therefore, exploring the comparative and competitive adsorption of VOCs is of both practical and scientific interest. This study elucidates the adsorption behavior of gaseous toluene, ethylbenzene, and xylene (TEX) targeted as VOCs onto natural cellulose-modified Fe3O4 (NC-Fe3O4) nanoparticles (NPs) both individually and in multicomponent systems for the first time in the literature. The characterization of NC-Fe3O4 synthesized via co precipitation method was carried out with analysis techniques including BET, SEM, EDS, FTIR, and TGA-DTA. The adsorption capacities of TEX as a single-component onto NC-Fe3O4 (for 20 mg L-1 TEX inlet concentration) were found as 477, 550, and 578 mg g(-1), respectively. In contrast, with TEX in a binary-component system, the adsorption capacity of the T (for 20 mg L-1 T with 10 mg L-1 E and 10 mg L-1 X, respectively) decreased by approximately 43% and 50% for the binary-mixtures of T-E and T-X, respectively, due to competition with E and X for adsorption sites. Similarly, the adsorption capacity of the E (for 20 mg L-1 E with 10 mg L-1 X) decreased by approximately 46% due to competition with the X for adsorption sites. With TEX in a ternary-component system, the adsorption capacity of the X remained consistent, indicating its competitive dominance over the E and T. The adsorption capacity of NC-Fe3O4 followed the order of X > E > T in the ternary-component system, which agrees with the adsorption results for the single-component system. The adsorption mechanism of TEX was explained by fitting the adsorption data to diverse kinetic and isotherm models. The NC-Fe3O4 with a superior performance in terms of both reuse efficiency and adsorption capacity, could be used as a promising and renewable adsorbent for efficient treatment of VOC pollutants. The findings of the current study will contribute to a better understanding of the comparative and competitive adsorption behaviors among different VOC pollutants in relation to a given adsorbent.
Composition, pressure, and temperature of the mantle source region of quaternary nepheline-basanitic lavas in Bitlis Massif, Eastern Anatolia, Turkey: A consequence of melts from Arabian lithospheric mantle
(Elsevier, 2019) Mercan, Çağrı; Özdemir, Yavuz; Oyan, Vural; Atakul Özdemir, Ayşe
The Quaternary (0.66–0.63 Ma) nepheline basanites (ne - basanite) are the firstly observed volcanic products of Arabia-Eurasia collision on Bitlis Pötürge Massif. They composed of clinopyroxene, olivine, Ti-magnetite, Cr spinel, and nepheline. The forsterite compositions of olivines range between 73 and 83%, calcic clinopyroxenes show modest variations in Wo48–57-En37–45-Fs5–7 and nephelines occur as minor minerals within the networks of other groundmass minerals. They are characterized by low SiO2 (40.16–41.96 wt%), high MgO contents (8.54–9.73 wt%) and similar Srsingle bondNd isotopic compositions with Arabian Plate volcanics. Mineral and whole rock thermobarometry yield crystallization pressure and a temperature range between 8 and 20 kbar and 1301 °C – 1035 °C respectively. Lavas have high Mg-number (>0.58), high Cr and Ni contents and strong LREE enrichment but depletion in Rb, K, and Pb. Trace elements together with Sr isotopic compositions inferred negligible assimilation of the local upper crustal material. The calculated average pressure and temperature of mantle melting for ne-basanites is 2,85 kbar and 1353 °C respectively. FC3MS (wt% FeO/CaO-3*MgO/SiO2) parameter and melting models using REE data reveal Çatak basanites are products of amphibole and phlogopite bearing metasomatised lithospheric mantle in garnet stability field. They seem to originated from depths of ~ 85 km which corresponds to the base of the Arabian lithosphere in the region.
A Comprehensive Analysis Of Arum Dioscoridis Plant Leaf Extract as a Corrosion Inhibitor for Mild Steel in 1 M Hcl: Synthesis, Characterization, Surface Analysis Observations, Experimental and Dft Studies
(Elsevier, 2025) Doner, Ali; Yildiz, Resit; Arslanhan, Selim; Baran, Mehmet Firat; Yıldız, Reşit; Department of Nutrition and Dietetics/ Beslenme ve Diyetetik Bölümü; Department of Nutrition and Dietetics/ Beslenme ve Diyetetik Bölümü
Background: Corrosion occurs wherever metal and its alloys exist. Protection of metals with corrosion inhibitor is a popular topic. Considering environmental concerns and human health, it is more favorable to use green corrosion inhibitors than traditional corrosion inhibitors. Methanol extract of Arum dioscoridis (AD) becomes a potential green corrosion inhibitor and it can be used in industrial areas. Methods: Corrosion efficiency, corrosion behavior and corrosion mechanism of Arum dioscoridis leaf extract on mild steel (MS) are illuminated in 1 M HCl by Tafel curves, electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR), zero charge potential, structural and surface morphological analysis and density functional theory (DFT). Significant findings: The extract function as mixed-type corrosion inhibitor with predominantly cathodic action. Inhibition efficiency was reached the value of 97 %. Polarization resistance is measured as 761 Omega cm2 at 1000 ppm of AD. The high inhibition efficiency was attributed to phytochemicals in the AD extract. A high activation energy (70.34 kJ/mol) for inhibited solution than that of in blank solution (49.66 kJ/mol). Both physisorption and chemisorption are responsible for formation of a protective layer on MS surface to inhibit the electrochemical reactions. Optimized molecular structures in phytochemicals confirmed the inhibitive properties via DFT.
A comprehensive review on detection of cyber-attacks: Data sets, methods, challenges, and future research directions
(ScienceDirect, 2022) Ahmetoglu, Huseyin; Das, Resul
Rapid developments in network technologies and the amount and scope of data transferred on networks are increasing day by day. Depending on this situation, the density and complexity of cyber threats and attacks are also expanding. The ever-increasing network density makes it difficult for cyber-security professionals to monitor every movement on the network. More frequent and complex cyber-attacks make the detection and identification of anomalies in network events more complex. Machine learning offers various tools and techniques for automating the detection of cyber attacks and for rapid prediction and analysis of attack types. This study discusses the approaches to machine learning methods used to detect attacks. We examined the detection, classification, clustering, and analysis of anomalies in network traffic. We gave the cyber-security focus, machine learning methods, and data sets used in each study we examined. We investigated which feature selection or dimension reduction method was applied to the data sets used in the studies. We presented in detail the types of classification carried out in these studies, which methods were compared with other methods, the performance metrics used, and the results obtained in tables. We examined the data sets of network attacks presented as open access. We suggested a basic taxonomy for cyber attacks. Finally, we discussed the difficulties encountered in machine learning applications used in network attacks and their solutions.
A conceptual framework of the service delivery system design for hospitality firms in the (post-)viral world: The role of service robots
(International Journal of Hospitality Management, 2020) Seyitoğlu, Faruk; Ivanov, Stanislav
This study aims to develop a conceptual framework of the service delivery system design for hospitality firms in the (post-)viral world. Several theoretical approaches such as resource-based view, value chain analysis, stakeholder theory, PESTEL analysis, positioning strategy, and service delivery system design were adopted. The paper identified three service delivery system designs (robotic, human-based, and mixed) and analyses their requirements, advantages, disadvantages, and potential target markets. According to the suggested model, hospitality firms need first to explore the expectations of tourists. Then comes the analysis phase (based on a holistic perspective, and consisting of RBV, Value chain, Stakeholder, and PESTEL analyses), which helps hospitality firms to identify how they should differentiate and position themselves in the market. Following, companies decide on what kind of service delivery system they should offer to their target customers, and position themselves in the market according to the chosen system.
The Content Analysis and Bibliometric Mapping of call Journal
(Routledge Journals, Taylor & Francis Ltd, 2022) Goksu, Idris; Ozkaya, Ebru; Gunduz, Ali
The primary aim of this study was to investigate the methodological trends of the articles published in the Computer Assisted Language Learning (CALL) journal between 2014 and 2019 via content analysis. The secondary aim was to analyze the CALL journal with the bibliometric mapping method to reveal the keyword trend and identify the countries, universities, and authors that made the highest contribution to the journal between 2008 and 2019. Full texts of 310 articles were analyzed by content analysis and a meta-data set of 469 articles from the Clarivate Analytics Web of Science (WoS) database was evaluated by bibliometric mapping. According to the results, most of the studies published in the CALL journal employed a quantitative research design and were conducted at higher education level. Additionally, most of the studies focused on language skills when compared to other educational factors such as motivation and perception. 'English as a foreign language', 'communication', 'motivation', 'telecollaboration', 'mobile learning', 'writing', and 'blended learning' were revealed as the most common keywords used in the studies. Countries that had the largest contribution to the CALL journal included Taiwan, USA, and China, respectively. Moreover, Taiwan-based universities contributed the highest number of publications and the authors including Wu-Yuin Hwang, Siew Ming Thang, Greg Kessler, Rustam Shadiev, Chun Lai, Mark Peterson, Jai Li, Liwei Hsu, and Wen-Chi Vivian Wu had the highest numbers of publications.

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