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Öğe The effect of treatment duration on the prognosis of adhd: a multi-center naturalistic follow-up study(ELSEVIER IRELAND LTD, 2025) Ercan, Eyuep Sabri; Bilgic, Ayhan; Tufan, Ali Evren; Akca, Omer Faruk; Yazici, Ipek Percinel; Bilac, Oznur; Tahillioglu, AkinObjective: This study aimed to evaluate the effect of medication duration over a 5-year period on the prognosis of Attention-Deficit/ Hyperactivity Disorder (ADHD) and the accompanying disruptive behavioral symptoms using a naturalistic methodology. Methods: The sample comprised 576 ADHD cases referred to 16 Child and Adolescent Psychiatry Clinics in 13 cities in T & uuml;rkiye, aged between 7-12 five years ago and 12-18 currently. Baseline and current Turgay DSM-IV Disruptive Behavior Disorders Rating Scale (T-DSM-IV-S) scores completed by parents were compared. Sociodemographic data, treatment processes, life events, and habits were recorded. Disorder severity and recovery levels were determined using the Clinical Global Impression Scale (CGI). Results: All current T-DSM-IV-S scores were significantly lower than the baseline scores. Longer duration of medication use, receiving psychotherapy, and higher socioeconomic status were associated with better CGI scores in the present study. However, increased baseline conduct disorder symptoms, being bullied, longer duration of Internet usage, dropping out of school, smoking, and older age were associated with worse CGI scores. Conclusion: Our study indicates that a longer duration of medication use is associated with better global improvement in children with ADHD. Better identification of the factors that may directly or indirectly affect the general improvement in ADHD cases and changing these factors may enable a more positive prognosis.Öğe Building resilience through self-defense: the role of martial arts in enhancing psychological strength among women(FRONTIERS MEDIA SA, 2025) Pekel, Aydin; Turan, Mehmet Behzat; Eraslan, Meric; Iqbal, Mujahid; Pepe, Osman; Yoka, Keziban; Yoka, OsmanIntroduction: This study aimed to investigate differences in psychological resilience between women who participate in martial arts and those who do not, while also examining the influence of demographic and socioeconomic characteristics. Methods: A total of 802 women voluntarily participated, including 407 martial arts practitioners (Muay Thai, kickboxing, boxing, or taekwondo) and 395 women who practiced Pilates. Data were collected via an online self-report questionnaire that included the Psychological Resilience Scale and a demographic information form. Statistical analyses were conducted using descriptive statistics, independent sample t-tests, and one-way ANOVA. Results: Results showed that women engaged in martial arts demonstrated significantly higher levels of psychological resilience in the sub-dimensions of control (p < .01, d = 0.47) and challenge p < .01, d = 0.27) compared to non-practitioners. However, in the commitment sub-dimension, non-martial arts participants scored higher (p < .05, d = 0.35). Among martial artists, psychological resilience varied significantly based on age, experience of violence, and smoking status. Significant differences were found for non-martial artists according to age, educational attainment, and income level. Discussion: These findings suggest that participation in martial arts may enhance specific dimensions of psychological resilience, especially in managing stress and embracing challenges. However, it may not necessarily foster higher commitment levels.Öğe The Effect of Tension-Free Vaginal Tape Surgery on Mixed Urinary Incontinence Symptoms and Anatomical Parameters: The Role of Transperineal Ultrasonography in Follow-Up(MARY ANN LIEBERT, INC, 2025) Dogan, Ozan; Ucar, Elif; Aliyeva, Aygul; Yassa, MuratObjective: Tension-free vaginal tape (TVT) in patients with mixed urinary incontinence (MUI) operation was aimed to show the changes in stress and urge incontinence symptoms and quality of life.Materials and Methods: This prospective study included 36 patients with MUI who underwent TVT operation. Bladder neck descent, retrovesical angle, pubourethral distance, urethral thickness, detrusor thickness, bladder, rectum, and uterus descent, and urethral rotation angle were evaluated preoperatively and 2 years postoperatively by transperineal ultrasonography, and Pelvic Organ Prolapse Quantification staging was performed. Preoperative and postoperative international consultation on incontinence questionnaire short form (ICIQ-SF) and overactive bladder questionnaire (OAB-V8) questionnaires were also performed.Results: The mean ICIQ-SF questionnaire score decreased from 16.39 preoperatively to 5.28 postoperatively. Urge symptoms assessed by the OAB-V8 questionnaire improved compared with the preoperative period (mean scores were 29.22 and 9, respectively). Nocturia mean score decreased from 2.31 to 0.81, while nocturnal voiding rates improved significantly (mean scores were 3.39 and 1.14, respectively). It was statistically proven that the effects of urinary incontinence on overall quality of life decreased after TVT (mean scores were 7.72 and 2.57, respectively). Furthermore, the mean score of bladder neck descent was 33.27 +/- 3.90 preoperatively and 17.19 +/- 3.91 postoperatively; the mean score of pubourethral distance was 12.11 +/- 1.95 preoperatively and 7.83 +/- 1.32 postoperatively; the mean score of urethral thickness was 8.69 +/- 1.58 preoperatively and 5.08 +/- 1.05 postoperatively; the mean score of detrusor thickness was 7.28 +/- 1.52 preoperatively and 4.92 +/- 1.02 postoperatively. A statistically significant difference was found between the mean scores of these parameters. In addition, retrovesical angle and urethral rotation angles decreased below the cut-off value postoperatively.Conclusions: In patients who underwent TVT for stress incontinence, if voiding functions can be restored to near normal, urge and stress symptoms improve.Öğe Comparison of Rheological, Microstructural, and Textural Properties of Set-Type Yogurts Fermented With Novel Streptococcus thermophilus Strains From Yogurts Produced Mountain Villages of Turkey With Those Produced With Commercial Cultures(WILEY, 2025) Denktas, Begum; Ozturk, Hale Inci; Demirci, Talha; Satilmis, Meryem Kubra; Akin, NihatIn recent years, many consumers prefer artisanal cultures as they provide special characteristic taste and flavor compared to commercial ones. Therefore, it is important to preserve traditional cultures and use them in production to reduce dependence on commercial cultures and to develop consumer-pleasing products. This study aimed to evaluate the technological performance of Streptococcus thermophilus strains isolated from yogurts collected from villages in Konya province, and to assess their suitability for commercial yogurt production. Physicochemical, microbiological, textural, rheological, microstructural, and sensory properties of experimental samples were analyzed for 28 days. During the refrigerated time at 4 degrees C, S. thermophilus counts varied between 8.41 and 9.94 log CFU/g. The impact of different S. thermophilus isolates on textural properties was evident, with yogurt samples C, D, and B exhibiting the best performance across all textural parameters. The same situation was observed for microstructure; C, D, and E had the best microstructure images, supported by high water retention capacity and low syneresis degree. B yogurt received the highest general acceptability scores across all storage periods. The results suggested that the strains 10K1, 10K2, and 4K6 could be recommended as potential starter cultures for commercial yogurt production. Novel cultures do not always achieve the flavor and product-specific quality characteristics that consumers like. However, it is very promising that some S. thermophilus strains isolated in this study show better properties than commercial cultures.Öğe Data-Driven Analysis of Short- and Long-Term Outcomes of Simulation, Nasal Hump Reduction, and Rasping in Open Rhinoplasty for Nasal Dorsum Correction(SAGE PUBLICATIONS INC, 2025) Bulut, Fuat; Bulut, FarukPurpose: This study aims to highlight the significance of performing simulations, nasal hump reduction, and rasping in open-technique rhinoplasty for the nasal dorsum. The research utilizes data science methodologies for a thorough examination of the collected survey data.Methods: A comprehensive survey comprising 29 questions was presented to surgeons participating in the Eastern Trakya ENT Association Training Meetings-I. This survey, specifically designed to investigate the nuances of open and closed rhinoplasty approaches to nasal dorsum intervention, collected responses from 132 physicians. The collected dataset was thoroughly reviewed and analyzed. The responses were not only graphically represented but also transformed into a dataset primed for data science analysis. Significant results were derived using both association rule-mining algorithms from machine learning and basic statistical analysis.Results: The raw data underwent thorough analysis using fundamental statistical methods and association rules within the field of data science. The discerned data patterns revealed significant insights into the behavioral tendencies and approaches adopted by physicians in rhinoplasty. The survey analysis emphasized the widespread acceptance of the open technique for nasal dorsum procedures, even though it may not be the preferred choice for all rhinoplasty cases. A notable 74.6% of rhinoplasty surgeons employing the open technique indicated that the primary long-term challenge during nasal dorsum interventions was irregularity. In addition, among the 132 participating surgeons, 25.8% were found to frequently engage in facial plastic surgery, while 55.4% reported abstaining from simulations. Notably, rhinoplasty surgeons who opted out of simulations, despite exclusively applying the open technique, reported encountering irregularities and requiring more adjustments.Conclusion: Rhinoplasty surgeons who do not use simulations in open nasal dorsum approaches reported facing irregularities and performing more revisions. Furthermore, they noted encountering irregularities in both the short and long term following nasal hump reduction and rasping procedures.Öğe BDNF coexpresses with MTOR and is associated with muscle fiber size, lean mass and power-related traits(SPRINGER, 2025) Bulgay, Celal; Zorba, Erdal; Kazan, Hasan H.; Bayraktar, Isik; Uca, Merve; Ergun, Mehmet A.; John, GeorgePurposeRecent research suggests a link between brain-derived neurotrophic factor (BDNF) and the mTOR signaling pathway, a key regulator of protein synthesis and muscle growth. However, it remains unclear whether BDNF influences muscle growth and power performance. Our study aimed to investigate the relationship between the expression of BDNF and MTOR genes in human skeletal muscle and examine the association between genetically predicted higher expression of the BDNF gene and muscle fiber size, lean mass, power performance, and power athlete status. MethodsThe study involved 456,382 subjects, including 285 athletes, 112 physically active individuals with muscle fiber composition data, 291 sedentary individuals with gene expression data, 5451 controls, and 450,243 UK Biobank participants. The muscle fiber composition was evaluated using immunohistochemistry, while gene expression analysis was performed using RNA sequencing. BDNF genotyping was carried out using real-time PCR or microarrays. ResultsWe found that BDNF gene expression was positively associated with MTOR gene expression in the vastus lateralis (p < 0.0001). Furthermore, genetically predicted higher BDNF expression (i.e., carriage of the C allele of the rs6265 (Val66Met) BDNF polymorphism) was positively associated with the cross-sectional area of fast-twitch muscle fibers in athletes (p = 0.0069), appendicular lean mass (p = 2.6 x 10(-)(7)), personal best scores of power athletes (p = 0.029), and power athlete status (p = 0.0056). ConclusionOur study demonstrates a positive correlation between BDNF and MTOR gene expression in human skeletal muscle, with genetically predicted higher BDNF expression associated with greater muscle fiber size, lean mass, enhanced power performance, and power athlete status.Öğe Seismic Behavior of Shear Wall-Dominant Tunnel Form Buildings With Continuous Slab-Wall Connections During the Kahramanmaras Earthquakes of February 6, 2023, in Turkey(WILEY, 2025) Balkaya, Can; Ete, AliTunnel form buildings dominated by shear walls are often built in countries with a high earthquake risk, as they can be erected quickly and cheaply. Since there are no beams and columns, the connections between the floor and wall are continuous and important for seismic behavior. This is the most important observation on site during the severe earthquakes on February 6, 2023, in Kahramanmaras, Turkey. There are no reports of the collapse of buildings constructed in tunnel form and no fatalities, although more than 300,000 buildings collapsed or were severely damaged and more than 50,000 people died. This seismic performance was mainly enhanced by the continuous slab-wall connections, shear walls, redistribution of lateral seismic forces at the edges, and 3D behavior due to T-C coupling. This paper also discusses the distribution of lateral forces and the strengthening strategies that affect the seismic behavior of buildings in tunnel form. Two-story slab-wall interaction models with openings that may be relevant to the effect of continuous slab-wall interaction are analyzed. During the field observation, some buildings in tunnel form are damaged due to their low torsional stiffness. To remove the tunnel formwork to the outside, most of the perimeter, which is very effective for torsional stiffness, is open. In most cases, the first dynamic period is the torsion, which leads to a lower torsional stiffness. To improve the torsional stiffness, X-bracing was used at the corners of the building. Three-story, 1:3 scaled, existing, and reinforced test models of tunnel form buildings with X-bracing are tested under pushover loads. By analyzing experimental studies and finite element analysis, valuable insights are gained to improve the seismic resistance of existing and future tunnel form buildings against seismic hazards. The seismic capacity of the strengthened model is increased by 22.6%, and the first period is changed from torsional to flexural mode.Öğe The Turkish version of the self-care behaviors scale for rheumatoid arthritis patients: cross-cultural adaptation and psychometric evaluation(BMC, 2025) Dalli, Oznur Erbay; Pehlivan, Seda; Misirci, Salim; Sahin, Nilhan Toyer; Pehlivan, YavuzBackgroundSelf-care behaviors play an important role in disease management and improving the health outcomes of rheumatoid arthritis (RA) patients. However, currently available Turkish instruments to measure self-care behaviors in RA patients are not disease-specific or have low reliability. The aim of this study was to adapt the Self-Care Behaviors Scale (SCBS), developed specifically for RA patients, into Turkish and evaluate its psychometric properties. MethodsThe study was conducted with 378 RA patients admitted to the Rheumatology Outpatient Clinic of a university hospital. Content validity, construct validity, internal consistency and test-retest reliability examined the psychometric properties of the scale. ResultsThe SCBS-T with its seven factors and 25 items was found to be valid (KMO = 0.957; Bartlett's test chi 2 = 6614.69, p < 0.001), to explain 67.80% of the total variance, and to have good fit indices (chi 2/df = 2.920; GFI = 0.861; CFI = 0.925; RMSEA = 0.078; TLI = 0.912; SRMR = 0.045). The scale's overall Cronbach's alpha coefficient was 0.86, while the subscales ranged between 0.74 and 0.81. One-week interval test-retest reliability was 0.81. ConclusionsThe high validity and reliability results of the SCBS-T indicate that the scale will form a strong basis for its routine use by health professionals in clinical settings and for the development of educational programs on the self-care of RA patients.Öğe Silent abuse in the blind spot between medicine and law: A case series of Munchausen syndrome by proxy from Türkiye(WILEY, 2025) Asan, Oemer; Kavla, Yasin; Boylu, Muhammed Emin; Sahin, Hueseyin Cagri; Cirakoglu, Emre; Oezcanli, Tuba; Duran, AlaattinMunchausen syndrome by proxy is a rare but dangerous form of child abuse in which a caregiver exaggerates, fabricates, or induces medical symptoms in a dependent individual, typically a child. It is of the utmost importance to recognize and address this syndrome, which has significant legal and medical consequences. The failure to identify cases in a timely manner and to implement appropriate intervention strategies may result in irreparable harm or even fatal consequences. This study examined four cases involving 15 child victims and four perpetrators. All individuals were referred to the Turkish Council of Forensic Medicine for evaluation of criminal responsibility. The data were sourced from the National Judicial Network Project and case files spanning a decade. A comprehensive review of the clinical and forensic records was conducted. The four perpetrators, all females aged 27-34, exhibited histories of adverse childhood experiences, early marriage, limited education, and neglect. The clinical manifestations in children included apnea, immobility, bleeding, and bruising. Eleven children died before the abuse was detected, and four children were removed from their homes and placed under the protection of the state. MSBP is still frequently overlooked in clinical practice, which can result in irreparable harm and even death among affected children. The severe cases, as illustrated in this manuscript, demonstrate a recurrent pattern of abuse that persists until the cases are identified. An integrated multidisciplinary approach, involving medical and forensic services, is of paramount importance to facilitate the recognition and prevention of this form of child abuse.Öğe Comparative analysis of regressive and non-regressive autism: a study of clinical patterns and environmental risk factors in Turkey(TAYLOR & FRANCIS LTD, 2025) Cevher Binici, Nagihan; Kutlu, Ayse; Yazan Songur, Cisel; Sabah Baris, Hande EmineObjectiveThis study compared clinical features, symptom severity, and prenatal/perinatal risk factors in children with regressive (ASD-R) and non-regressive autism spectrum disorder (ASD-NR) in a Turkish paediatric sample.MethodA retrospective cross-sectional study was conducted with 143 children aged 2-6 years diagnosed with ASD, grouped as ASD-R (n = 29) or ASD-NR (n = 114). Symptom severity was assessed using the CARS, AuBC, and ABC. Data on prenatal and perinatal factors, epilepsy, and parental age were collected.ResultsNo significant differences were found in CARS, AuBC, or total ABC scores, except for higher lethargy/social withdrawal scores in the ASD-NR group. Prenatal and perinatal risk factors and epilepsy prevalence were similar. However, parental ages at birth were significantly higher in the ASD-R group. Logistic regression did not yield significant predictors of regression.ConclusionThe findings suggest that prenatal and perinatal factors may influence developmental regression in ASD when interacting with genetic vulnerability. Longitudinal studies are needed to clarify the role of early environmental exposures and epigenetic mechanisms in regression patterns.Öğe Determination of the effects of steaming and blanching pre-treatment processes on the physicochemical properties, antioxidant activities, and 5-hydroxymethylfurfural and S-allyl cysteine contents of black garlic(Akademiai Kiado ZRt., 2025) Binici, H.İ.; Şat, İ.G.; Yılmaz, B.This study investigated the effects of steaming and blanching pre-treatments on the physicochemical properties, bioactive compound content, and antioxidant activity of black garlic during fermentation. Moisture content and pH decreased over fermentation time, while titratable acidity increased. Pre-treatments enhanced the total phenolic, flavonoid, and flavonol contents, as well as antioxidant activity (DPPH, ABTS+, FRAP), compared to control samples, with steaming pre-treatment being more effective than boiling. 5-HMF and S-allyl cysteine (SAC) levels were optimised with pre-treatments, promoting the formation of bioactive compounds. These methods offer an efficient, cost-effective way to enhance black garlic production, shorten processing times, and improve its nutritional and economic value. © 2025 Akadémiai Kiadó, Budapest.Öğe Environmental effect of high-, upper, and lower middle-income economies’ energy mix: Is there a trade-off between unemployment and environmental quality?(SAGE Publications Inc., 2025) Koyuncu Çakmak, Tuğba; Beşer, Mustafa Kemal; Alola, Andrew AdewaleThe fact that scenarios of high unemployment potentially offer the opportunity for improved environmental sustainability remains a dilemma. In instances when environmental sustainability is triggered by increased unemployment, that poses a challenge in the simultaneous achievement of sustainable development goals (SDGs) 8 (decent work and economic growth) and 13 (climate action). On the basis of this concern, in this study, we examine whether a swap association exists between unemployment and environmental quality vis-à-vis the environmental Phillips curve (EPC) hypothesis for high-, upper, and lower middle-income (HUmLmI) economies (comprising both developed and developing countries) over the period 1990–2020. We used the novel dynamic autoregressive distributed lag simulation approach. From the findings, the EPC hypothesis is not valid in high-income (developed) economies in the short and long term. However, the validity of the EPC hypothesis was upheld in the upper and lower middle-income (developing) economies. This implies that the lack of decent work opportunities/high unemployment rates hampers environmental quality in high-income countries, promotes environmental quality in upper middle-income countries, and does not drive environmental quality in lower middle-income countries. In addition, economic growth and the use of fossil energy exacerbate environmental degradation. On the other hand, the consumption of renewable energy sources reduces environmental woes by ?0.22, ?0.54, and ?1.15 in HUmLmI countries, respectively. This shows that renewable energy sources adapt to the environmental sustainability motive. These results imply that policy instruments to drive SDGs 8 and 13 in these income-categorized economies should be case specific rather than taking a unilateral policy approach. © The Author(s) 2023.Öğe Machine Learning Algorithms to Study the Impact of Sustainability on Financial Success: Evidence from US Stock Market(Springer Nature, 2025) Doğruel, Merve; Küçükgöde, Haydar AnılIn recent years, as in almost every field, the concept of sustainability has become a concept that has been given considerable importance and researched in both the academic and business worlds in the field of finance. This study aims to find the best model for estimating financial success within the framework of sustainability by adding environmental risk score, social risk score, and governance risk score in addition to classical indicators in stock returns. For this purpose, data obtained from 300 US companies across 11 distinct industries is utilized. The features evaluated are the environmental risk score, social risk score, governance risk score, as well as profitability, liquidity, leverage, RoA, and beta, which are used in classical studies. To obtain the best modeling predictions, various machine learning algorithms were used instead of classical statistical methods. Based on the F1 performance metrics of the seven machine learning algorithms tested, the model with the highest performance is Random Forest, an ensemble learning model. Based on the Random Forest model, environmental and social risk scores are particularly important features for financial success. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.Öğe The Effectiveness of Evidence-Based Aromatherapy Interventions in Uremic Pruritus; [Üremik Kaşıntıda Kanıt Temelli Aromaterapi Uygulamalarının Etkinliği](Turk Nefroloji Diyaliz ve Transplantasyon Hemsireleri Dernegi, 2025) Töyer Şahin, Nilhan; Pehlivan, SedaUremic pruritus is a common symptom observed in patients with end-stage renal disease undergoing dialysis treatment, impairing their quality of life. Due to the kidneys' inability to perform their functions, nitrogenous waste products accumulate in the body, leading to skin itching. The discomfort caused by itching, along with associated symptoms such as sleep disturbances, contributes to a deterioration in the overall quality of life. Although pharmacological treatments for uremic pruritus are available, their adverse pharmacodynamic and pharmacokinetic effects in patients with kidney disease make non-pharmacological approaches the preferred option for managing symptoms such as itching. Among Complementary and Integrative therapy methods, aromatherapy stands out as one of the most commonly used approaches due to its accessibility and ease of use. This article aims to discuss evidence-based aromatherapy practices for managing uremic pruritus and to discuss the findings of relevant studies. A literature review was conducted using the keywords “uremic pruritus,” “aromatherapy,” and “hemodialysis symptoms” in the MEDLINE, PUBMED, and DergiPark databases. After applying inclusion and exclusion criteria, 14 full-text studies were included in the review. The findings of the reviewed studies demonstrate that aromatherapy has a positive effect on uremic pruritus in patients undergoing dialysis. © 2025, Turk Nefroloji Diyaliz ve Transplantasyon Hemsireleri Dernegi. All rights reserved.Öğe Nexus among Renewable Energy, Economic Growth, Technology Innovation, CO2 Emissions, and Life Expectancy in NAFTA: What’s the Forum’s Response Amid Time Frequencies?(Econjournals, 2025) Fumey, Michael Provide; Ansah, Mordecai Akondoh; Taha, Amjad; Sahin, Zekeriya; Sackitey, Gabriel Mordzifa; Yeboah, Samuel DukuThis study examines the nexus between renewable energy (RE), economic growth (ECOG), technological innovation (TEI), CO2 emissions, urbanization (URB), and life expectancy (LEX) in NAFTA countries driven by the sustainable development framework. Using advanced wavelet coherence with data from 1990M1-2023M12, along with WAMC techniques, the analysis revealed intricate temporal and frequency-based interactions. Technological innovation and renewable energy boost life expectancy by reducing environmental degradation. As for urbanization and economic growth, these modified results anticipate dependent variables by the quality of infrastructure and policies. In the short run, tested causality relationships between variables show non-directional, while medium-and long-term scenarios evidence mutual reinforcement of the variables with life expectancy leading to renewable energy adoption and emissions reduction. The tests confirm WAMC’s almost perfect integration of factors within time scales, stressing thus their collective outcome on life expectancy. Therefore, this study emphasizes the status of appropriate sustainable policies integrating health, energy, and environmental objectives and creating effective measures toward long-term sustainability in NAFTA. © 2025, Econjournals. All rights reserved.Öğe Contribution of gastro-guides to glocal gastronomic culture diversity strategies: A conceptual evaluation for Turkey(De Gruyter, 2025) Eren, Aslı Sultan; Ayyildiz, Seda ÇİÇEKLİ; Aktaş, FerzanThe study aims to investigate and conceptually examine the contribution of guides specializing in gastronomy to the development of Turkey’s glocal gastronomic cultural diversity strategies. The study is based on the evaluation of gastronomic and cultural diversity, and the subject is examined from the perspective of the glocal approach; the contribution of guides specialized in gastronomy to glocal strategies is discussed conceptually. Practical and theoretical implications for the future were made through document analysis. Emphasizing the normlessness created by moving away from glocal values while emphasizing globalization in gastronomy and examining the contribution of tour guides to the strategies developed based on this framework reveals the study’s originality. © 2025 Walter de Gruyter GmbH, Berlin/Boston, Genthiner Straße 13, 10785 Berlin.Öğe Does tour guides’ ethical behavior matter for tourists’ revisit and recommendation intentions? Examining with a gender perspective(Emerald Publishing, 2025) Eren, Aslı Sultan; Dedeoğlu, Bekir Bora; Okumus, FevziPurpose: This study aims to investigate the impact of tour guides’ ethical behavior on tourist satisfaction, intention to revisit and to recommend and examine whether gender plays a moderating role in these relationships. Design/methodology/approach: The study was conducted in the Cappadocia Destination in Turkiye. A total of 910 participants were included in the study. The partial least squares structural equation modeling (PLS-SEM) method was used to examine the research model in this study. Findings: The study results indicate that the ethical behavior of tour guides has a significant impact on tourists’ satisfaction with the tour, satisfaction with the tour guide, recommendation intention and revisit intention. Furthermore, the study found that the effect of ethical behavior on these outcomes was more pronounced among male tourists than female tourists. Research limitations/implications: Despite the tourists’ satisfaction, they may want to remember the experience using mental time travel, and they may fear not having the same positive experience during any revisits. Tour guides should be given continuous training on the concept of professional ethics throughout their education and professional life. The factors causing higher ethical perceptions in male tourists than female tourists may be examined in further studies (i.e. marital status). Originality/value: The research fills an important gap in the literature by shedding light on the significance of ethical behavior in the context of tour guides, a topic that has received relatively little attention. In particular, the results obtained reveal the originality of the study. Besides that, investigating the moderating role of gender and determining the behavioral intentions of male and female individuals according to the ethical behaviors of tour guides are important for the future of Cappadocia tourism. © 2024, Emerald Publishing Limited.Öğe EVALUATING THE EFFICIENCY OF COMPANIES IN THE BORSA ISTANBUL CORPORATE GOVERNANCE INDEX USING DATA ENVELOPMENT ANALYSIS(Deniz Publication, 2024) Sahin, Zekeriya; Çora, HakanThis study examines the efficiency of companies listed in the Borsa Istanbul (BIST 100) Corporate Governance Index for the year 2023 using Data Envelopment Analysis (DEA). DEA, a non-parametric method, was applied to 46 companies to evaluate their ability to maximize outputs given available inputs. The analysis employed an output-oriented Charnes, Cooper, and Rhodes (CCR) model, implemented through the Efficiency Measurement System (EMS) software. The findings revealed that 15 companies were relatively efficient, while 31 were inefficient, resulting in an overall efficiency rate of 32.6%. These results underscore the importance of robust corporate governance standards in enhancing organizational performance. The study identified corporate governance principles, such as transparency, accountability, and stakeholder engagement, as critical factors influencing efficiency. Recommendations to improve inefficiencies include strengthening governance standards, implementing training programs, and fostering transparency and accountability. The study contributes to the existing literature by providing empirical evidence of efficiency levels within Turkey's Corporate Governance Index and highlights the ongoing challenges and opportunities for improving corporate practices. The results also serve as a valuable reference for investors and policymakers seeking to enhance the performance of publicly listed companies and promote sustainable growth. Future research could expand by incorporating different variables and periods to assess longitudinal changes in corporate efficiency. © 2024 Journal of Organizational Behavior Research.Öğe An Investigation into the Ability of a Solar Photovoltaic-Hydrogen System to Meet the Electrical Energy Demand of Houses in Different Cities in Türkiye(MDPI, 2025) Özçelep, Yasin; Bekdaş, Gebrail; Apak, Sudi; Geem, Zong WooIn this study, the annual electricity consumption of nine real houses from different cities in T & uuml;rkiye was recorded on a monthly basis. The feasibility of meeting the electrical energy needs of houses with hydrogen and supplying the energy required for hydrogen production using solar panels is examined. The annual electricity consumption of the houses was normalized based on house size. The solar panel area for hydrogen production needed for these houses was defined. Additionally, it was calculated that the average volumetric amount of hydrogen produced per hour during peak sun hours in the investigated cities was 1 m3/h. This approach reduced the solar panel area for hydrogen production by a factor of 1.7.Öğe Use of the UPOINT Classification in Turkish Chronic Prostatitis or Chronic Pelvic Pain Syndrome Patients(Elsevier Science Inc, 2016) Arda, Ersan; Çakıroğlu, Basri; Taş, Tuncay; Ekici, Sinan; Uyanik, Bekir SamiOBJECTIVE To determine the positive subdomain numbers and distribution of the UPOINT classification in chronic prostatitis and to compare the erectile dysfunction (ED) pattern. MATERIALS AND METHODS From 2008 to 2013, 839 patients with symptomatic chronic prostatitis or chronic pelvic pain syndrome were included in this study. The correlation between UPOINT domains and National Institutes of Health chronic prostatitis symptom index (NIH-CPSI) total score, subscores, and the 5-item International Index of Erectile Function scores were evaluated retrospectively. RESULTS The mean patient age was calculated as 37.7 +/- 7.4 (range 21-65). The average total NIH-CPSI score was determined as 9.07 (range 1-40) and the average positive UPOINT subdomain number was determined as 2.87 +/- 0.32 (range 1-6). Subdomain patient numbers and rates were calculated as 529 urinary (63%), 462 psychosocial (55%), 382 organ specific (45%), 290 infection (34%), 288 neurological or systemic (34%), and 418 tenderness (skeletal muscle) (50%), respectively. It was determined that ED, determining the subdomain of sexual dysfunction in patients, was positive in a total of 326 (39.9%) patients, with 220 patients having mild (26.2%), 76 mild to moderate (9.1%), 19 moderate (2.3%), and 5 with severe (0.6%) ED. A statistically significant correlation was not determined between the 5-item International Index of Erectile Function score and UPOINT subdomain number and NIH-CPSI score. CONCLUSION It has been determined that although there is a strong and significant correlation between UPOINT classification and NIH-CPSI score in Turkish patients with chronic prostatitis or chronic pelvic pain syndrome, the inclusion of ED as an independent subdomain to the UPOINT classification is not statistically significant. (C) 2016 Elsevier Inc.
