Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(66)
- Merdan, Mehmet(56)
- Duran, Celal(50)
- Ozdes, Duygu(47)
- Kaygusuz, Abdullah(42)
- Demir, Selim(37)
- Turan, Ibrahim(37)
- Ashyralyyev, Charyyar(34)
- Dokuz, Abdurrahman(33)
- Araz, Onur(31)
- Öztürk, Serkan(31)
- Sipahi, Ferkan(30)
- Kandemir, Raif(28)
- Arslan, Mehmet(27)
- Karsli, Orhan(27)
- Kulakaç, Nurşen(26)
- Baltacı, Cemalettin(25)
- Gücer, Mehmet Ali(25)
- Kurt, Kemal(25)
- Maden, Nafiz(25)
- Ozturk, Samet(25)
- Topal, Fevzi(25)
- Baltaci, Cemalettin(24)
- Yücel, Cem(24)
- Aliyazicioglu, Yuksel(23)
- Bayrakdaroglu, Serdar(23)
- Kankal, Murat(23)
- Peker, Iskender(23)
- Yolcu, Halil(23)
- Reis, Hatice Catal(21)
- Topal, Meryem(21)
- Vural, Alaaddin(21)
- Aydin, Aydanur(20)
- Aydin, Faruk(20)
- Bayraktar, Alemdar(20)
- Kurnaz, Muammer(20)
- Çelik, Necati(20)
- Ürkek, Bayram(20)
- Cakir, Tufan(18)
- Günen, Mehmet Akif(18)
Yayınlar
- MakaleAçık Erişim2024The Relation between Corruption and Tax Revenues: An Assessment of Transitional economies
Setürk, Nazli Keyifli; Bayraktar, Yuksel; Özyilmaz, Ayfer
Corruption affects many economic, political, and social indicators directly and indirectly. One of the economic costs of corruption is a decrease in tax revenues. In societies where corruption is high, administrators taking bribes for excess revenue may reduce tax administration performance. Therefore, corruption and taxes are closely related to each other. This study analyzes the impact of corruption on different tax types in 6 selected transition economies (Estonia, Czech Republic, Hungary, Poland, Latvia and Slovak Republic) in the 1998-2021 and Bootstrap Panel Granger causality method. According to this study, there is unidirectional causality from personal income tax to corruption in Slovakia, from corporate tax and VAT to corruption in Poland, from VAT and SCT to corruption in Hungary, and from VAT to corruption in Latvia. Additionally, there is a bidirectional causal relationship from corruption to personal income tax in Poland and from corruption to corporate tax in the Czech Republic and Hungary, but there is no causal relationship between corruption and VAT and SCT. Personal income and corporate taxes, which require a strong relationship between tax administration and taxpayers, are more affected by corruption than taxes such as VAT and SCT.
AtıfOpenAlex2
İncele - Derleme MakaleYalnız künye2024Authentic Leadership: A Systematic Review and Research Agenda
Polat, Eray; Arici, Hasan Evrim; Arasli, Huseyin
There has been a growing interest in authentic leadership as a distinctive style of leadership and a dynamic research topic. In this direction, the aim of this study is multifaceted. First, we focus on providing a comprehensive overview of research on authentic leadership (AL), which has attracted substantial research interest in the last few years. Second, we outline the theoretical and nomological network of AL, highlighting antecedents, outcomes, moderators, and mediators. Third, we offer an elaborated future research agenda to enable advances in theory and empirics. We systematically reviewed 182 articles issued in the business management and psychology literature between 2005 and 2021. Interest in AL is growing, and 2020 is the golden year. Developed countries dominate the field. After a rigorous review, we offer a future research agenda with four key themes. The study highlights that AL is critical to the emergence and growth of valuable behaviours, attitudes, and performance at individual, team, and organisational levels. The study provides new research ideas and further conceptualization of AL. We also provide a comprehensive review of why managers should continue to practice AL, where the literature has been, and where it may be headed in the future.
AtıfWoS7TR Dizin1
İncele - MakaleAçık Erişim2024The correlation between individuals' attitudes toward cancer screening, cancer information overload, and healthy life awareness: a cross-sectional study
Dogan, Melike Demir; Kurt, Seda; Ertin, Berkay
AimsThis study was conducted to determine the correlation between individuals' attitudes toward cancer screenings, cancer information overload, and healthy life awareness.MethodsIn this cross-sectional study, data were collected from 343 people through face-to-face interviews using the socio-demographic characteristics form, attitude scale for cancer screenings, cancer information overload scale, and healthy life awareness scale.ResultsThe mean age of the participants was 47.79 +/- 11.65 and 61.8% of them were women. Older participants had lower positive attitudes toward cancer screenings and healthy life awareness. Higher education level participants displayed more positive attitudes toward cancer screenings. The higher the level of education and income, the higher the cancer information overload. When their cancer information overload increased, their positive attitudes toward cancer screenings and their healthy life awareness, in turn, decreased. As their healthy life awareness increased, they displayed more positive attitudes toward cancer screening, as well. As the participants' awareness in change, socialization, responsibility, and nutrition subscales of healthy life awareness scale increased, they had more positive attitudes toward cancer screenings.ConclusionConsequently, it was determined that the participants had a high level of positive attitudes toward cancer screenings, a moderate level of cancer information overload, and a high level of healthy life awareness.
AtıfWoS7OpenAlex9İncele - EditoryalYalnız künye2024Scopus SJRQ3A rare cause of acute abdominal pain: Perforation of a hepatic hydatid cyst into the peritoneum
Tonkaz, Gokhan; Akdeniz, Cemre; Tonkaz, Mehmet; Tonkaz, Duygu Erkal; Aslan, Serdar
- EditoryalYalnız künye2024Scopus SJRQ2A rare case of intraosseous calcaneal lipoma with calcific and cystic components
Tonkaz, Gokhan; Akdeniz, Cemre; Tonkaz, Mehmet; Tonkaz, Duygu Erkal; Bekci, Tumay
AtıfWoS1OpenAlex1
İncele - EditoryalAçık Erişim2024Scopus SJRQ3A rare case: cerebral air embolism causing stroke after lung cancer ablation
Tonkaz, Mehmet; Tonkaz, Duygu Erkal; Tonkaz, Gokhan
- MakaleYalnız künye2024Scopus SJRQ3Efficacy of fat quantification methods used in MRI to distinguish between normal, benign, and malignant bone marrow pathologies in children
Tonkaz, Duygu Erkal; Ozpar, Rifat; Tonkaz, Mehmet; Yazici, Zeynep
Background Fat quantification methods in magnetic resonance imaging (MRI) have been studied to differentiate bone marrow pathologies in adult patients; however, scarce literature is available in pediatric patients.Purpose To evaluate the efficacy of the T1 signal intensity value (T1-SIV), out-of-phase/in-phase signal ratio (OP/IP SR), and fat fraction (FF) to differentiate between normal, benign, and malignant pathological processes.Material and Methods A total of 48 pediatric patients with lumbar and pelvic MRI were classified into three groups according to bone marrow pathology (group 1, normal; group 2, benign pathology/reconversion; group 3, malignant). The efficacy of T1-SIV, OP/IP SR, and FF values in differentiating these pathologies was evaluated using Kruskal-Wallis or analysis of variance and followed by Bonferroni or Dunn-Bonferroni tests. Cutoff values for malignant infiltration were defined using ROC analysis.Results Although these values were significantly different in all three groups (P = 0.001-0.008), this difference was not sufficient to discriminate between all groups. Subgroup analyses showed significant differences in T1-SIV between groups 1-3, in OP/IP SR between groups 1-3, 2-3, and 1-2, in FF between groups 1-2 and 1-3 in various regions (P = 0.001-0.049). Cutoff values had a sensitivity and specificity of 90%-100% for OP/IP SR and FF.Conclusion T1-SIV, OP/IP SR, and FF may potentially distinguish normal from pathological bone marrow. OP/IP SR and FF values detected malignant infiltration with high sensitivity and specificity in this study. However, only OP/IP SR may significantly differentiate benign and malignant bone marrow pathologies which needs to be confirmed in the future study with a larger patient population.
AtıfWoS3OpenAlex4İncele - EditoryalYalnız künye2024Scopus SJRQ2A rare lesion of the clivus: Neuroenteric cyst
Tonkaz, Gokhankhan; Kaya, Abdulkadir; Tonkaz, Mehmet; Tonkaz, Duygu Erkal
- MakaleAçık Erişim2024Glass Ceiling Syndrome: A Perspective of Women Working In Health Institutions
Turan Kurtaran, Ayten; Aydin, Arzu; Yesildag, Ahmet Y.
Background and Purpose: Although women constitute the majority of the workforce in the healthcare sector, the number of representations in management positions needs to be increased. This study aimed to determine female health workers' glass ceiling syndrome perception levels and examine socio-demographic variables' effect on this level. Design/methodology/approach: The research sample consists of 708 female healthcare professionals who work in six public hospitals. Perceptions were measured using the 42-item Glass Ceiling Perception scale. Measurements were made on a 5-point Likert scale ranging from 0 to 4. Findings: It was found that the glass ceiling syndrome perception levels of female healthcare professionals were neutral (1.94). It has been determined that female healthcare professionals with a high level of education, doctors and nurses, those between the ages of 26-35, those who work in medical units, and those with a child have higher perception levels of glass ceiling syndrome.
AtıfWoS4OpenAlex5TR Dizin1İncele - MakaleYalnız künye2024Scopus SJRQ4A New Marker Evaluating the Risk of Ischemic Bowel in Incarcerated Hernia: Immature Granulocytes
Senlikci, Abdullah; Kosmaz, Koray; Durhan, Abdullah; Suner, Mert Orhan; Bezirci, Rifat; Mercan, Umit; Suleyman, Marlen
To evaluate the predictive value of immature granulocytes in intestinal necrosis in incarcerated hernia. The study included patients who were operated on due to incarcerated hernia. The cases were separated into 2 groups as those with or without bowel resection. Age, gender, hernia type, side, white blood cell count, neutrophil count, neutrophil-lymphocyte ratio, red cell distribution width count, immature granulocyte count, platelet count, and platelet lymphocyte ratio were statistically compared between the groups. There were 27 cases (17.3%) in the group with bowel resection and 127 cases (82.7%) in the group without bowel resection. A statistically significant difference was determined between the groups in respect of the hernia type, white blood cell count, neutrophil count, neutrophil-lymphocyte ratio and immature granulocyte count (p<0.05). The cut-off value of the immature granulocyte count was found to be 0.065, with sensitivity of 63% and specificity of 80%. In multivariate analysis, age over 65 years and immature granulocyte count>0.065 were found to be independent predictors of necrosis development. The immature granulocyte value is a fast, easily accessible and reliable marker that can be used to predict intestinal necrosis in cases of incarcerated hernia.
AtıfWoS5OpenAlex4İncele - MakaleAçık Erişim2024THE CAUSALITY RELATIONSHIP BETWEEN CREDIT DEFAULT SWAPS (CDS) AND PORTFOLIO INVESTMENTS: THE CASE OF TÜRKİYE
Küçükosman, Asiye; Uzun, Sumeyye
This study examines the causality relationship between portfolio investments and credit default swaps (CDS) in T & uuml;rkiye. Analysing the dynamics between portfolio investments and CDS premiums, two important variables for financial markets is critical to understanding how risk perception and investment decisions are affected. While portfolio investments are generally considered an indicator of the confidence of foreign investors in the country's economy, CDS premiums are an important risk measure that reflects the country's debt risk and the risk perception of market participants. In this context, examining the relationships between the two variables contributes to the understanding of the effects of investor behavior and risk perception on macroeconomic indicators in financial markets. In the study, the Granger causality test was applied using data from the period 2014Q1-2024Q1. The results obtained show that CDS premiums have a significant and unidirectional causal effect on portfolio investments. Increases in CDS premiums increase investors' risk perception and lead to a decrease in portfolio investments. On the other hand, no causal effect of portfolio investments on CDS premiums was found. These findings emphasize the importance of risk management in terms of portfolio investments in T & uuml;rkiye and reveal that CDS premiums play a role in investor decisions.
AtıfWoS1OpenAlex4TR Dizin2İncele - BildiriAçık Erişim2024A Study on the Segmentation and Classification of Diabetic Retinopathy Images Using the K-Means Clustering Method
Incir, Ramazan; Bozkurt, Ferhat
Diabetic Retinopathy (DR) is a retinal disease caused by diabetes, representing one of the most prevalent causes of vision loss affecting millions of people worldwide. Swift detection and treatment of this condition are crucial for preventing the disease. Various deep learning and machine learning algorithms have been employed for disease detection and classification, often overlooking the data preprocessing stage. In the data preprocessing phase of this study, segmentation of important lesions, such as hard exudates, was conducted using the K-Means clustering method. The identified lesions were highlighted on the original images. The resulting dataset was then classified using pre-trained architectures, namely EfficientNetV2-M, ResNet50, MobileNet, and DenseNet121. After training on the APTOS dataset, the EfficientNetV2-M model achieved an accuracy of 95.16%. The classification results indicated the contribution of the lesion highlighting process during data preprocessing to the overall classification accuracy.
AtıfWoS1OpenAlex3İncele - MakaleYalnız künye2024Scopus SJRQ4Investigation of Corrosion Properties of LA-91 Alloy Coated with MAO Method
Sukuroglu, Suleyman; Totik, Yasar; Sukuroglu, Ebru Emine; Avci, Selcuk
LA91 magnesium alloy is a super lightweight magnesium -lithium alloy proposed for next generation materials. In addition to the advantages of these alloys such as low density, high strength-to -weight ratio, specific stiffness and brittleness, these alloys also have disadvantages such as low corrosion resistance and the oxide -carbonate film formed on the surfaces of the alloys cannot provide sufficient corrosion protection even in non-corrosive environments. In this study, micro arc oxidation, one of the coating methods, was applied to LA91 alloy. The surface morphologies of the coatings were characterized and it was aimed to increase the corrosion resistance of LA91 alloy. For this purpose, potentiodynamic polarization tests were carried out in 3.5% NaCl solution at room temperature to draw attention to the protection of the coating. As a result of the tests, it was determined that the oxide coatings raised on the surface
AtıfWoS2İncele - MakaleAçık Erişim2024Individual Earthquake Preparedness of Residents in Istanbul: Social and Cognitive Determinants
Topal, Mehmet Hanefi; Simsek, Kubra; Baspinar, Adem
This study aims to identify the social and cognitive factors that influence individual-level earthquake preparedness among Istanbul residents by using an extended model that incorporates earthquake risk perception within the framework of social cognitive theory (SCT). A survey of 411 participants was conducted, and data analysis was performed using structural equation modeling (SEM). The findings strongly support the SCT assertions, revealing that social factors (such as social trust and subjective norms) and cognitive factors (including outcome expectations and self-efficacy) are key predictors of earthquake risk perception. However, earthquake preparedness behavior was found to be more closely associated with cognitive factors, particularly self-efficacy and risk perception, with subjective norms being the only social factor influencing preparedness behavior. These results that policymakers and practitioners should focus on disaster education, awareness, and participation to promote individual preparedness and mitigate disaster risk.
AtıfWoS6OpenAlex6İncele - MakaleAçık Erişim2024Scopus SJRQ1Investigation of the effects of white tea on liver fibrosis: An experimental animal model
Yilmaz, Huelya Kilic; Türker, Merve; Kutlu, Eda Yilmaz; Mercantepe, Tolga; Pinarbas, Esra; Tümkaya, Levent; Atak, Mehtap
Liver fibrosis is a common, progressive disease that affects millions of patients worldwide. In this study, it was aimed at investigating the effect of white tea on liver fibrosis in an in-vivo environment by creating an experimental liver fibrosis model on rats. In this study, an experimental liver fibrosis model was created with carbon tetrachloride (CCl4) in Sprague-Dawley rats to investigate the effect of white tea on liver fibrosis. Rats are treated with CCl4 (1 mL/kg) to constitute the liver fibrosis model. White tea was given ad libitum with drinking water. As a result of the study, liver tissue hydroxyproline levels were found to be significantly lower (p = .001) in the white tea group. Histopathologically, it was found that the liver tissue histopathological damage score (LHDS) and fibrosis scoring were significantly lower (p < .001) in the white tea group. However, although it was not statistically significant in the group given white tea, compared with the fibrosis group, it was found that the malondialdehyde (MDA) level in the liver tissues was lower, the glutathione (GSH) level was higher, and the serum alanine aminotransferase (ALT) levels were lower. The study explained the effect of white tea on liver fibrosis and suggested that white tea might be beneficial in reducing the progression of liver fibrosis.
AtıfWoS5OpenAlex6İncele - MakaleAçık Erişim2024Scopus SJRQ2The effect of motivational interviewing on quality of life and self-efficacy behaviors of individuals with chronic illness: A meta-analysis study
Uzun, Sevda; Guerhan, Nermin
ObjectiveThis study aims to reveal the effect of the motivational interviewing on the quality of life and self-efficacy behaviors of individuals with chronic diseases.Material-methodFor this meta-analysis study, PubMed, Web of Science, EBSCOhost, Google Scholar, and Y & Ouml;K Theses databases were searched in January-May 2021 without year limitation. As a result, 38 studies were included in the study: 23 for the quality of life variable, and 21 for the self-efficacy behaviors variable (in 6 studies, both variables were examined together). The data were synthesized with meta-analysis and narrative methods. The total sample size of the studies is 25,425.ResultsThis meta-analysis study showed that the motivational interviewing applied to individuals with chronic diseases changed their quality of life (SMD: 0.296, %95 CI: 0.054-0.537, Z = 2.402, p = .016, I2 = %95). The type of chronic disease, measurement tool, sample group, disease group, age range, and whether the motivational interviewer was a nurse or not changed the effect size of the motivational interviewing on the quality of life. The self-efficacy score average of the experimental group to which motivational interviewing was applied was statistically similar to that of the control group (SMD: 0.141, %95 CI: -0.065, 0.347; Z = 1.346, p = .178, I2 = %87).ConclusionsAs a result of the meta-analysis, it was determined that the use of motivational interviewing increased the quality of life level of individuals with chronic diseases. However, it is thought that more research is needed because some studies were conducted with small sample size and prepost test design. The results of the study may provide guidance on the interventions to be used in improving the quality of life of individuals with chronic diseases.
AtıfWoS8OpenAlex8İncele - MakaleAçık Erişim2024Empirical Analysis of Turkish Banking Sector Institutional and Macroeconomic Determinants of Risks
Akyol, Hikmet; Basar, Selim
This research examines the macroeconomic and institutional sources of individual, systemic, and systematic risks in the Turkish banking sector. The period between 2008:Q3 and 2019:Q3 of the nine deposit banks selected for this purpose were estimated using panel data analysis estimators. The results indicate that selected macroeconomic and institutional variables affect banking risks. These findings are important for revealing the institutional and macroeconomic sources of risks in the Turkish banking sector. Therefore, the results contain significant propositions for researchers, market participants, and politicians. Market participants and researchers can anticipate defaults and financial instability using selected macroeconomic and institutional variables. The estimation results reveal Turkish banks' institutional soundness and financial performance strength. In addition, the extent to which banks are effective intermediaries in the sector was analysed. This research documented a strong link between global market indicators and banking risks
AtıfOpenAlex1İncele - MakaleYalnız künye2024Scopus SJRQ4Efficacy of transarterial chemoembolization treatment with 30-60-μm microspheres in patients with hepatocellular carcinoma
Tonkaz, Mehmet; Nas, Omer Fatih; Erkal Tonkaz, Duygu; Inecikli, Mehmet Fatih; Ongen, Gokhan; Ozkaya, Guven
Background: Chemoembolization with small drug-eluting microspheres is widely used in the treatment of hepatocellular carcinoma (HCC). Objectives: This study aimed to evaluate the efficacy and safety of transarterial chemoembolization with doxorubicin-eluting 30-60-mu m microspheres (DEB-TACE) in patients with Barcelona Clinic Liver Cancer (BCLC) stage A and B HCC. Materials and methods: In this single-center study, 88 patients with HCC (BCLC A/B: 15.9%/84.1%) who underwent 137 DEB-TACE sessions between January 2015 and December 2020 were retrospectively assessed. Response to treatment was assessed 4-8 weeks after each DEB-TACE procedure according to mRECIST (Modified Response Evaluation Criteria in Solid Tumors) criteria. Progression-free survival (PFS), time to progression (TTP), overall survival (OS), and adverse events were recorded. Results: In 88 patients (84.1% males; median age, 66.0 years; range, 22-83), the median follow-up was 17 months (range, 2-64). Eight patients (9.1%) had a complete response, 42 (47.8%) had partial regression, 10 (11.3%) had stable disease, and 28 (31.8%) had progressive disease. There was a statistically significant difference between serum alpha-fetoprotein (AFP) levels before and after DEB-TACE treatment (p < 0.001). The median OS was 17 months (95% confidence interval [CI], 10.3-23.7). Cox regression analyses found that preprocedural serum AFP level (400+ vs. < 400; p = 0.024), Child Pugh classification (B vs. A; p = 0.019), and number of DEB-TACE sessions (1 vs. > 1; p = 0.003) were independent risk factors affecting OS. The median PFS was 8 months (95% CI, 5.8-10.2) and TTP was 6 months (1-14 months). Conclusion: Chemoembolization with 30-60-mu m microspheres is an effective and safe treatment for HCC. The number of DEB-TACE sessions is also one of the factors affecting OS.
- MakaleAçık Erişim2024Evaluation of Antioxidant Properties of Wild and Cultivated Blueberry Leaves and Their Phenolic Compound
Okan, Onur Tolga; Ulusoy, Esra; Öz, Mehmet; Deniz, Ilhan
Aim of study: This study aimed to investigate the antioxidant activity and polyphenol and flavonoid content of blueberry leaves, which could have positive effects on human health. Area of study: The research was conducted in three cities of Turkiye's Karadeniz region, where blueberry cultivation is prevalent: Giresun, Trabzon, and Rize. Material and method: In this study, 29 blueberry leaves (27 cultivated and two wild) were selected as sample materials. The total phenolic content (Folin-Ciocalteu method), total flavonoid content (aluminum (III) chloride method), and total antioxidant capacity (DPPH and FRAP) of the samples were analyzed. Phenolic characterization was performed using HPLC. Main results: The total phenolic content varied between 8.36 and 121.61 mg GAE/g, whereas the total flavonoid content ranged from 0.91 to 3.07 mg QE/g. The results revealed that blueberry leaves had high antioxidant activity and contained considerable amounts of polyphenols and flavonoids. Chlorogenic acid was identified as the dominant compound in all leaves samples. Research highlights: These findings indicate that blueberry leaves could be a valuable source of antioxidants in the food and cosmetic industries, comparable to the fruit itself.
AtıfWoS2OpenAlex2İncele - BildiriAçık Erişim2024In Different Scenarios MobileNet-V1 for Cross-view Gait Recognition
Yaprak, Busranur; Gedikli, Eyup; Badica, C.; Ivanovic, M.; Koprinkova-Hristova, P.; Leon, F.; Manolopoulos, Y.; Yildirim, T.; Ucar, A.
Gait recognition aims to identify people from a distance by analyzing their walking style. Nevertheless, the efficacy of recognition drops significantly under cross-view and, appearance-based variations such as carrying and clothing. In this study, the performance of the MobileNet-V1 deep network is evaluated in various scenarios to address the cross-view gait recognition problem. In the first scenario, the fine-tuned MobileNet-V1 is evaluated on Gait Energy Images (GEI) as input data, while in the second scenario, the fine-tuned MobileNet-V1 is assessed with Optical Flows and masked RGB frames input data. In the last scenario, the first two scenarios are combined over a single fused deep network based on finetuned MobileNet-V1, and a single recognition process is performed using two different fused features data; GEI features with Optical Flow features, and GEI features with masked RGB frame features. In the evaluation process, a comprehensive data set for the cross-view gait recognition problem, CASIA-B is used for the experiments. The obtained results demonstrate that in the last scenario, the contribution of masked RGB frame features to the recognition rate of GEI is more significant.
