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 Erişim2026Scopus SJRQ1Positive attitudes toward and perceived importance of wearable display technology as an effective learning tool among nursing students: Turkish validity and reliability study
Aydin, Aydanur; Mese, Sevinc; Ay, Ali; Sezer, Hale; Rizalar, Selda; Güler, Sevil; Gürsoy, Ayla
Objective This research aimed to adapt Positive Attitudes Toward and Perceived Importance of Wearable Display Technology (PATPIWDT) as an Effective Learning Tool Among Nursing Students into Turkish and to examine the validity and reliability of its translation.Methods This methodological study included 698 nursing students recruited via convenience sampling. Construct validity was evaluated using Confirmatory Factor Analysis (CFA) with the Maximum Likelihood (ML) estimation method. Internal consistency was assessed using Cronbach's Alpha and McDonald's Omega coefficients.Results The model demonstrated excellent fit according to the confirmatory factor analysis results. The CFA results for the Positive Attitudes subscale indicated a good model fit (CMIN/DF = 4.79, GFI = 0.93, CFI = 0.97, RMSEA = 0.07, SRMR = 0.03). For the Perceived Importance subscale, the single-factor structure showed acceptable fit indices (CMIN/DF = 5.82, GFI = 0.98, SRMR = 0.03). As a result of examining the standardized loadings of the items, it was seen that the item factor loadings were 0.40 and above, indicating sufficient factor loading. Cronbach's alpha coefficients were 0.91 for the positive attitudes subscale and 0.84 for the perceived importance subscale. The respondents also demonstrated an above-average overall score, with a mean of 3.40 (SD = 0.69).Conclusion The Turkish version of the scale provides a dependable measure of nursing students' positive attitudes toward wearable screens and how important they consider this technology for future educational use.
- MakaleAçık Erişim2026Scopus SJRQ2Canal Hypersurfaces Generated by Pseudo-Null Curves with Bishop Frame in Lorentz-Minkowski 4-Space
Kazan, Ahmet; Kazan, Sema; Gur Mazlum, Sumeyye; Karaca, Emel; Altin, Mustafa; Grilli, Luca
In this paper, we deal with the canal hypersurfaces that are formed as the envelope of a family of pseudo-hyperspheres or pseudo-hyperbolic hyperspheres with centers lying on a pseudo-null curve with Bishop vector fields in four-dimensional Lorentz-Minkowski space. We give main theorems which contain the parametric expressions of these canal hypersurfaces along with their Gaussian, mean, and principal curvatures and important geometric characterizations. We also provide these characterizations for tubular hypersurfaces. Finally, we construct an example to allow for better understanding and comprehension of the results.
- MakaleYalnız künye2026Scopus SJRQ2Spatio-Temporal Distributions of Seismicity, Stress Evolution, and Tectonomagmatic Signatures of the 2025 Sındırgı Earthquake Swarm, Western Anatolia, Türkiye
Büyüksaraç, Aydin; Senkaya, Mustafa; Alkan, Hamdi; Bektas, Ozcan; Öztürk, Serkan; Pirti, Atinc; Yücel, Mehmet Ali
The Simav Fault Zone (SFZ) in Western Anatolia remains one of the most active tectonic regions in Turkey, and the 2025 S & imath;nd & imath;rg & imath; earthquake swarm has renewed concern regarding evolving seismic hazard. This study analyzes the swarm on the S & imath;nd & imath;rg & imath; Segment using Coulomb stress modelling, spatial distributions of b- and p-value, gravity and magnetic anomalies, geothermal data, and GNSS observations. Coulomb stress calculations show that the M-W = 6.1 and M-W = 6.0 mainshocks produced stress increases of similar to 0.1 bar that effectively loaded adjacent segments of the SFZ, D & uuml;vertepe Fault Zone (DFZ), and Gelenbe Fault Zone (GFZ), guiding the east-southeast and northward migration of aftershocks. Spatial statistics indicate a b-value ranging from 0.6 to 1.3 and a p-value between 0.3 and 1.0. The lower b-values (< 1.0) and p-values (< 0.5) mark high-stress regions near the mainshock, and higher values characterize more stable zones. Gravity anomalies delineate a dense volcanic-ophiolitic body in the southwest and a caldera-like depression south of the SFZ, while magnetic anomalies highlight the structural continuation and interaction of the SFZ with the GFZ. GNSS stations recorded centimetre-to millimetre-scale motions: BAL1 moved similar to 1.34 cm horizontally with minor uplift, DEI1 experienced similar to 1.12 cm displacement with small vertical fluctuations, and KIKA shifted similar to 0.85 cm southwestward with largely stable elevation. Together, these results show that the 2025 swarm was controlled by stress transfer within a mechanically heterogeneous tectonomagmatic system. The identified stress-enhanced corridors along the SFZ and DFZ may act as future nucleation zones, emphasizing the need for sustained monitoring of this evolving fault network.
- MakaleAçık Erişim2026Scopus SJRQ1Process Optimization of Spray-Dried Aquafaba and Comparison with Freeze-Drying: Techno-Functional Performance and Structural Attributes
Tunc Odabas, Merve Tugce; Saricaoglu, Furkan Turker; Parlak, Mahmut Ekrem; Akdogan, Arda; Odabas, Halil Ibrahim; Gündogdu, Engin; Simsek, Senay; Atalar, Ilyas
This study aimed to optimize the spray-drying (SD) process for aquafaba and compare the physical and techno-functional properties of the resulting powder with those of its freeze-dried (FD) counterpart. A Box-Behnken design was employed to evaluate the effects of inlet air temperature (150-190 degrees C), air speed (3.5-4.3 m/s), and feed flow rate (0.3-0.5 L/h) on 14 quality responses. The optimized SD conditions were determined to be an inlet air temperature of 189 degrees C, an air speed of 4.2 m/s, and a feed flow rate of 0.3 L/h. Validation experiments demonstrated that the developed models had high predictive capacity, with only a small discrepancy (0.56-5.88%) between the predicted and experimental values. Comparative analysis showed that the optimized SD powder had significantly lower moisture content (2.47%) and water activity (0.18) than the FD powder (3.51% and 0.34, respectively), indicating superior storage stability. In addition, the SD powder exhibited greater whiteness (82.37), higher water solubility (88.44%), and substantially greater foaming capacity (266.67%) than the FD sample (243.33%). Although the FD powder demonstrated better wettability and water absorption capacity because of its porous structure, FTIR spectroscopy and protein secondary structure analysis confirmed that SD preserved the functional integrity of aquafaba. Specifically, SD induced a transition from disordered random-coil structures to more ordered beta-sheet and beta-turn configurations, thereby improving foaming performance. Overall, these findings indicate that optimized spray-drying is a highly efficient and industrially scalable alternative to freeze-drying for producing functional aquafaba powder for use as a plant-based egg substitute.
- MakaleAçık Erişim2026Scopus SJRQ1Thermosonication improves the bioactive properties and in vitro bioaccessibility of broccoli juice through integrated RSM and metaheuristic optimization
Arpa Zemzemoglu, Tuba Eda; Tokatli Demirok, Nazan; Türkol, Melikenur; Gürfidan, Remzi; Kilim, Oguzhan; Tokatli, Nazli; Yikmis, Seydi; Mohamed Ahmed, Isam A.; Aljobair, Moneera O.; Yinanç, Abdullah
Broccoli juice is highly nutritious, containing phenolic compounds, chlorophyll derivatives, antioxidants, and other biologically active phytochemicals; however, conventional thermal processing may reduce their stability and bioaccessibility. The aim of this study was to analyse the impact of thermosonication on the following properties of broccoli juice: bioactivity, antioxidant capacity, phenolic profile and in vitro bioaccessibility. Thermosonication conditions were optimized using Response Surface Methodology (RSM) integrated with the Gray Wolf Optimizer (GWO) and Particle Swarm Optimization (PSO) algorithms. Broccoli juice samples were subjected to conventional pasteurization and thermosonication under different processing conditions, and total chlorophyll, ascorbic acid (AA), ferric reducing antioxidant power (FRAP), total phenolic content (TPC), and individual phenolic compounds were evaluated. Digestive stability and post-digestion bioaccessibility were also assessed using a standardized in vitro gastrointestinal digestion model. The developed quadratic models exhibited high statistical significance for TPC and FRAP responses (p < 0.001), with coefficients of determination (R2) of 0.9949 and 0.9853, respectively. The optimum thermosonication conditions were identified as 40 degrees C, 6.75 min, and 64.04% amplitude, under which experimentally validated FRAP and TPC values reached 12.86 mmol TE/L and 149.77 mg GAE/100 ml, respectively. HPLC-DAD analysis showed that gallic acid and naringin were the pre-dominant phenolic compounds, and that thermosonication promoted greater phenolic retention than conventional pasteurization. In vitro digestion results demonstrated that thermosonicated broccoli juice maintained significantly higher levels of TPC, FRAP, chlorophyll, and AA throughout gastrointestinal digestion, with higher TPC recovery (30.45%) than pasteurized samples (26.22%), indicating improved post-digestion bioaccessibility of phenolic compounds. Similar improvements were observed for antioxidant capacity and chlorophyll retention. Furthermore, PSO and GWO optimization results showed strong agreement with RSM predictions, confirming the robustness of the proposed optimization strategy. Overall, thermosonication was shown to effectively and sustainably enhance the functional quality, antioxidant properties, phenolic stability, and digestive bioaccessibility of broccoli juice.
AtıfScopus1WoS1OpenAlex1
İncele - MakaleYalnız künye2026Scopus SJRQ13-D magnetotelluric modeling and radiogenic heat reservoir for EGS development: A case study of the Kestanbol Granitoid intrusion (NW Türkiye)
Büyük, Ersin; Hacioglu, Ozlem; Ayzit, Tolga; Baba, Alper
Enhanced Geothermal Systems (EGS) provide firm, low-carbon baseload power and can contribute to reducing fossil-fuel-based energy generation. Granites and granitoids are particularly favourable EGS hosts due to their widespread occurrence, fracture-controlled permeability, and long-term heat supply from radiogenic decay. This study proposes an EGS development plan for the Kestanbol Granitoid Intrusion (KGI) in NW Anatolia, T & uuml;rkiye, based on a three-dimensional magnetotelluric (MT) model integrated with geochemical constraints on radiogenic heat production (RHP). We invert MT data acquired at fifty unevenly spaced sites to image the 3D resistivity structure of the KGI and its surroundings, resolving a highly resistive plutonic body bounded by relatively conductive fault-fracture zones. To quantify the radiogenic heat reservoir, we determine RHP rates from uranium, thorium, and potassium concentrations measured on twenty-seven rock samples from the KGI and adjacent lithologies, and integrate these values with the MT-derived pluton geometry. When combined with the regional stress regime, the integrated results indicate that the KGI hosts elevated RHP relative to surrounding rocks and that its internal structure and fault-controlled permeability architecture are favourable for EGS development. In particular, the north-western margin of the KGI emerges as the most promising target for injection-production well pairs. This workflow demonstrates how integrated MT, geochemical, and structural analyses can provide a quantitative, site-specific basis for EGS prospect ranking and drilling strategy in radiogenic granite/granitoid provinces. Overall, we propose a site-specific and risk-aware EGS development plan for the KGI that couples subsurface structure, radiogenic heat supply, and permeability architecture, providing a transferable framework for assessing radiogenic granite/granitoid provinces.
AtıfWoS1İncele - MakaleYalnız künye2026Scopus SJRQ2Ramifications of Türkiye's public engagement with polar regions
Limon, Onur; Caymaz, Ebru; Gurdal Limon, Elif; Demirayak, Ozgur; Dal, Adnan; Özsoy, Burcu
This study examines how T & uuml;rkiye's National Polar Science Programme (NPSP) and the National Polar Science Symposium (NPSS) define and implement public engagement within the country's emerging polar research framework. Situating T & uuml;rkiye's experience within broader international debates on public engagement in emerging and internationally governed scientific domains, the analysis draws on core science communication theories, including deficit-dialogue-participation models, typologies of public engagement, and co-production perspectives. Methodologically, the study employs qualitative document analysis of ten NPSP Monitoring and Assessment Reports (2018-2022) and seven NPSS abstract books (2017-2023), using an iterative and theory-informed coding process. The findings indicate that public engagement is predominantly shaped by informational and visibility-oriented strategies, while dialogic elements are gradually emerging through education- and youth-focused initiatives. However, institutionalised participatory mechanisms enabling public influence on research agendas remain limited. The study concludes that T & uuml;rkiye's public engagement trajectory reflects a hybrid and incremental configuration shaped by institutional development within an internationally governed research context. By treating the Turkish case as an analytically comparative example rather than a context-specific exception, the article contributes to international discussions on how public engagement is structured and institutionalised in emerging polar and climate research programmes.
- MakaleYalnız künye2026Scopus SJRQ1Polar science diplomacy of Türkiye: the Second International Polar Year case
Limon, Onur; Gurdal Limon, Elif; Caymaz, Ebru; Demirayak, Ozgur; Dal, Adnan; Özsoy, Burcu
This article examines T & uuml;rkiye's participation in the Second International Polar Year (IPY-II, 1932-1933) as a historically grounded and underexplored case of early science diplomacy. IPY-II coordinated interdisciplinary polar research across forty-four countries, and T & uuml;rkiye's involvement during the early Republican period offers fresh insight into interwar scientific cooperation. The article documents T & uuml;rkiye's scientific and institutional contributions and analyses them through the reciprocal framework of science impacting diplomacy and diplomacy impacting science. Drawing on archival documents, official correspondence, parliamentary records, and contemporary newspapers, supplemented by expert interviews, it assesses the case against an explicit definition of science diplomacy. T & uuml;rkiye's meteorological data, later incorporated into the synoptic weather maps of the Northern Hemisphere, were scientifically significant, institutionally coordinated, and internationally recognised, yet shaped by asymmetrical hierarchies. The case enriches the historical understanding of science diplomacy by non-hegemonic states.
- MakaleYalnız künye2026Scopus SJRQ2Computational gamma-ray attenuation and fast-neutron removal cross-section assessment of CrN, AlCrN and AlTiCrN ceramic coatings using EGS4 Monte Carlo and Phy-X/PSD
Sirin, Murat; Kaya, Selim; Aktarer, Semih Mahmut; Baltas, Hasan; Küçükömeroglu, Tevfik
In this study, the computationally predicted gamma-ray attenuation behavior and fast-neutron removal cross-section characteristics of micrometre-scale CrN, AlCrN, and AlTiCrN ceramic coatings produced via cathodic arc evaporation were investigated. The shielding parameters were not measured by direct gammaor neutron-transmission experiments; instead, mass attenuation coefficients (MAC, mu/rho) in the 0.05-2.50 MeV range were obtained from EGS4 Monte Carlo simulations and Phy-X/PSD calculations, and the agreement between the two computational datasets was evaluated. Energy-dependent attenuation parameters, including half-value layer (HVL), mean free path (MFP), effective atomic number (Zeff), radiation protection efficiency (RPE), and kerma coefficients, were calculated. Statistical comparison showed good consistency between EGS4 and Phy-X/PSD for MAC, RPE, HVL, MFP, and kerma coefficients, whereas Zeff exhibited larger method-dependent deviations. All coatings showed higher attenuation at low photon energies due to the photoelectric effect, while Compton scattering dominated at intermediate energies. Among the investigated coatings, CrN exhibited the most favorable calculated gamma-ray attenuation indicators, with lower HVL and MFP values and higher RPE values. The macroscopic fast-neutron removal cross-section (Sigma R) was also calculated as a first-order neutron attenuation indicator, and CrN showed the highest Sigma R value. Considering their limited thickness of approximately 2.3-2.8 mu m, these coatings should not be regarded as replacements for conventional bulk radiation shields. Instead, nitride-based ceramic coatings may serve as secondary or multifunctional surface layers in space-restricted components requiring local radiation attenuation and mechanical durability.
- MakaleYayıncıda açık erişim2025DO ENVIRONMENTAL INNOVATIONS, TRADE, AND ECONOMIC GROWTH AFFECT THE ECOLOGICAL FOOTPRINT IN INDUSTRIALIZED COUNTRIES? PANEL AUGMENTED MEAN GROUP AND COMMON CORRELATED EFFECT ESTIMATIONS
Akyol, Mehmet; Soyyigit, Semanur
This study assessed the environmental technological innovation (ETI) of the 13 countries with the highest industrial added value (China, the United States, Japan, Germany, India, the United Kingdom, South Korea, France, Russia, Italy, Mexico, Brazil, Indonesia) over the period between 1992 and 2019. The objective is to evaluate the impact of carbon dioxide (CO2) emissions, trade openness (TO), and economic growth (EG) on the ecological footprint (EFP). In this study, a panel data analysis was conducted utilizing the second-generation PANIC unit root test, the Westerlund cointegration test, the Dumitrescu-Hurlin causality test, and the common correlated effect mean group (CCEMG) and augmented mean group (AMG) estimator methods. The results of the analysis demonstrate that, according to the CCEMG, ETI exerts a mitigating influence on EFP in Indonesia. In numerous countries, CO2 has been observed to increase EFP, whereas in a select few countries, EG has been found to have a similar effect. Conversely, in China and South Korea, TO has been identified as a factor contributing to an increase in EFP, while in the United States, it has been identified as a factor that contributes to a decrease in EFP. The AMG indicates that ETI results in a decrease in EFP in Brazil and Indonesia, while simultaneously producing an increase in Mexico. While CO2 is observed to increase EFP in numerous countries, EG is seen to increase EFP in many countries, although this is only the case in India. TO is found to decrease EFP in China, India, South Korea, and Brazil, while simultaneously increasing it in Germany. The empirical evidence suggests that policies aimed at limiting uncontrolled economic growth, prioritising environmentally friendly technological innovations, improving international trade processes and policies with the objective of reducing emissions, and developing environmentally friendly processes and products in production are likely to be effective.
AtıfWoS2İncele - MakaleAçık Erişim2025Investigation of parents with high-risk infant on participation in care, depression, quality of life, and anxiety according to the infant's severity of neurologic impact
Sen, Muserref Ebru; Yakut, Hatice
Aim: The study aims to examine the psychological consequences such as anxiety levels, quality of life, depression, and participation in the care of parents with high-risk infants who have varying levels of neurological impact severity. Material and Methods: Forty high-risk infants and their mothers were included in the study. The infants were divided into three groups according to the Dubowitz Neurologic Assessment Scale. The State-Trait Anxiety Inventory (STAI), Edinburgh Postpartum Depression Scale (EPDS), Quality of Life Short Form 36 (SF-36), and the NICU Care Participation Scale were administered. Results: There were significant differences in the mothers' anxiety and depression levels (p < 0.001) and many parameters of quality of life according to the severity of neurological impact. However, it was determined that the severity of the neurological impact did not affect the mothers' participation in care (p > 0.01). Discussion: Although our study revealed that parents' depression, anxiety, and quality of life levels changed according to the severity of neurological impairment in high-risk infants, care participation was not affected. The limited sample size and the inability to generalize the results to different cultural and socioeconomic groups are important limitations. Nevertheless, it can be concluded that the medical condition of the newborn seriously affects the mental health of the parents.
- MakaleAçık Erişim2025The effect of SARS-CoV-2 pandemic on anxiety levels and attitudes towards e-learning among sports sciences students
Türker, Ustun; Bostanci, Ozgur
Background and Study Aim The COVID-19 pandemic has led to significant changes in education and teaching processes, particularly affecting application-based disciplines such as sports science. This study aimed to examine the relationship between COVID-19-related anxiety and attitudes toward e-learning among sports sciences students. Material and Methods The study was conducted using a cross-sectional design with 2,479 students from 14 state universities in Turkey. Data were collected using the Coronavirus Anxiety Scale (CAS) and the Test of E-Learning Related Attitudes Scale (TELRA), and responses were gathered through online surveys. Parametric statistical analyses (t-test, correlation) were performed using SPSS at a significance level of p<0.05. Results Anxiety associated with the SARS-CoV-2 pandemic led to significant changes in the e-learning attitudes of sports sciences students. Students with higher levels of anxiety exhibited stronger tendencies toward technology use and perceived usefulness, whereas only limited differences were noted in satisfaction and motivation. Female students reported higher levels of symptoms and anxiety, while those who engaged in regular exercise demonstrated lower anxiety levels. Interestingly, within the high-anxiety group, students who did not regularly participate in exercise displayed more favorable e-learning attitudes. These findings suggest that anxiety may strengthen the inclination toward digital learning; however, this tendency does not always align with motivational commitment. Conclusions The e-learning attitudes of sports sciences students during the pandemic were influenced by factors such as technological competence, psychological state, gender, exercise habits, and the requirements of practical courses. The findings highlight the importance of designing hybrid and flexible learning models in times of crisis, in a manner that integrates psychological support with pedagogical needs.
- MakaleAçık Erişim2025A FIXED POINT APPROACH TO FRACTIONAL INTEGRO-DIFFERENTIAL EQUATIONS: CONVERGENCE AND DATA DEPENDENCE
Cona, Lale
Fractional calculus, which involves derivatives and integrals of non-integer order, is widely used in modeling real-world problems in science and engineering. This study focuses on solving fractional integro-differential equations using Picard's three-step iteration algorithm. We apply Picard's three-step iteration algorithm to approximate solutions and show that it converges strongly. The method is shown to be not only efficient in approximating solutions but also robust with respect to perturbations in the initial data and operators, demonstrating its data dependence. A numerical example is provided to illustrate the theoretical results and to confirm the applicability and reliability of the proposed approach.
- MakaleYalnız künye2025Scopus SJRQ1Modeling the Compressive Strength of Fiber-Reinforced Alkali-Activated Concrete Using Non-Destructive Methods in Short Curing Periods
Aksüt, Yavuz Selim; Çullu, Mustafa; Yetgin, Sukru
The indirect assessment of concrete compressive strength using non-destructive techniques, including the Schmidt rebound hammer and ultrasonic pulse velocity methods, is crucial for evaluating and tracking the strength of structural concrete used in construction and rehabilitation projects. However, studies focusing on alkali-activated concrete (AAC) remain insufficient. This study investigates the mechanical properties of fiber-reinforced alkali-activated concretes (FAACs) produced with short curing times, addressing this gap in the literature. Ground blast furnace slag (GBFS) was used as the binder, and waste volcanic rock dust (RD), produced in a natural stone processing plant, served as a fine filler. These materials were activated with sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) to produce alkali-activated concrete, both without fibers (AAC) and with fibers (FAAC). Steel fiber (SF) and polyester fiber (PYF) were used separately and in hybrid forms at 0.25%; 0.50%; 0.75%, and 1.0% volume fractions, resulting in a total of 117 cubic specimens (15x15x15 cm). The specimens' mechanical properties were evaluated using regression analyses based on data from Schmidt rebound number (RN), ultrasonic pulse velocity (UPV) non-destructive methods and uniaxial compressive strength (UCS) destructive tests. Optimized functions predicting compressive strength based on RN and UPV measurements were developed, highlighting the significant effects of fiber type, ratio, and mode of use. Additionally, multivariate prediction models were statistically developed using data from the three test methods.
AtıfWoS2OpenAlex1İncele - MakaleAçık Erişim2025Mineral chemistry, thermodynamic evolution, and crystallization history of late miocene volcanic rocks around posof (Ardahan, Turkiye)
Cicerali, Derya; Yücel, Cem; Aydinçakir, Emre; Kaygusuz, Abdullah
This study aimed to constrain the crystallization and emplacement conditions of magmas that produced the Late Miocene volcanic rocks exposed at the junction of the Erzurum-Kars Plateau and the Eastern Pontides in the Northeastern Anatolia Region through a series of thermobarometric analyses. The volcanic succession unconformably overlies Oligocene mudstone, siltstone, and sandstone alternations, with limestone and cherty limestone at higher levels. Petrographically, they consist offine-to coarse-grained basalt, basaltic andesite, and andesite. Mineral compositions include plagioclase (An(16-77)), clinopyroxene (Wo(39-45)En(43-50)Fs(11-12)), orthopyroxene (Wo(3-4)En(73-82)Fs(14-24)), olivine (Fo(63-86)), hornblende (Mg#=0.62-0.79), and Fe-Ti oxides (Usp(0.05-1.44), Ilm(94.10-95.53)). The groundmass comprises microlites of these minerals and volcanic glass. The dominant textures are microlitic porphyritic, hyalomicrolitic, and microlitic porphyritic, while glomeroporphyritic, intergranular, pilotaxitic, subophitic, flow, and vesicular textures are also observed. Widely present disequilibrium features, such as zoning, sieve, and resorption, are common in plagioclase and clinopyroxene. Thermobarometric calculations indicate crystallization temperatures of 880-1230 degrees C, pressures of 0.73-8.71 kbar, oxygen fugacities between (-10.94) and (-8.92), and water contents of4.60-6.32 wt.%. These results suggest that the volcanic rocks crystallized under volatile-rich, oxidizing conditions across a broad depth range (similar to 2-32 km), at relatively high temperatures.
- MakaleAçık Erişim2025Scopus SJRQ1Global Elites in Flux: Cultural Capital and Power after Globalization
Özkan, Vildane; Dinç, Artum
In the post-globalization era, global elites face a transformed landscape of resurgent national sovereignty and civilizational rhetoric. This article examines how transnational power-holders-once emblematic of a borderless world - are recalibrating their cultural strategies and legitimacy mechanisms amid these shifts. Drawing on cultural sociology and elite theory (Bourdieu, Bauman, Castells, Gramsci), the analysis integrates non-Western scholarly perspectives. It reconceptualizes cosmopolitan elite culture under conditions of de-globalization. We argue that global elites are neither passive victims of de-globalization nor static cosmopolitans. Instead, they act as cultural brokers who selectively adjust their identities and narratives. Some accentuate patriotic or civilizational themes to align with ascendant statecentric discourses, while others redouble on universalist rhetoric through new transnational alliances. Comparative illustrations from Western countries, Russia, China, and T & uuml;rkiye demonstrate that elites are actively adapting to a fragmented world order. These shifts suggest that sociological inquiry needs to move beyond treating globalization as a given context and toward analyzing the cultural dynamics of elite power in a fractured world-one where questions of meaning, identity, and legitimacy have become as pivotal as economic forces.
AtıfOpenAlex1İncele - MakaleYalnız künye2025Spontaneous Retroperitoneal Hemorrhage withPsoasHematoma i n anElderlyPatient: ADiagnostic and Therapeutic Challenge
Eyüboglu, Kayahan; Keskin, Cem
Spontaneous retroperitoneal hemorrhage (SRH) is a rare and potentially life-threatening condition, often challenging to diagnose and manage, especially in elderly patients with multiple comorbidities. Psoas hematoma is a known complication that can be associated with anticoagulation therapy. A 93-year-old male patient with a history of atrial fibrillation, chronic heartfailure, and anticoagulant use (apixaban) presented with complaints of dizziness following a fall in the bathroom. He was initially assessed in the neurology clinic for potential cognitive symptoms; however, while awaiting assessment, he experienced a syncopal episode, resulting in his transfer to the emergency room. The patient had a significant reduction in hemoglobin levels, necessitating additional examination. Imaging revealed an 8 cm left psoas hematoma with active extravasation. The patient received a blood transfusion, vitamin K, and therapeutic interventions, including interventional radiology, which effectively halted the hemorrhage. This case highlights the diagnostic complexity and therapeutic challenges posed by spontaneous retroperitoneal hemorrhage in elderly patients, especially those on anticoagulant therapy. Early recognition and appropriate intervention are crucial for patient recovery.
- MakaleAçık Erişim2025Investigation of Fluctuations in Cryptocurrency Transactions with Sentiment Analysis
Demírel, Ugur; Çam, Handan
This study investigates public sentiment about popular cryptocurrencies listed on crypto exchanges in Turkey, using comments shared on social media platforms and online forums. The research seeks to enhance the existing body of knowledge by overcoming the shortcomings of sentiment analysis studies focused on Turkish texts. Data collected from social media and online forums were examined with sentiment analysis techniques. A total of 607,592 comments were analyzed, of which 89,986 were classified as negative, 72,655 as positive, and 444,951 as neutral. For binary classification, 89,986 negative and 72,655 positive examples were selected and machine-learning models were trained and tested on 162,641 examples. The study's methodology includes an in-depth examination of sentiment analysis results obtained using machine learning classifiers. The findings show how various cryptocurrencies are perceived on different social media platforms. For instance, BTC (Bitcoin) is generally perceived negatively on Investing.com and Telegram, while ETH (Ethereum) generally displays more negative views. These results help investors understand their perceptions and market expectations towards cryptocurrencies. This study deepens the role of social media sentiment analysis in cryptocurrency markets, contributing to the development of new methods and approaches for future research.
AtıfWoS1OpenAlex3
İncele - MakaleAçık Erişim2025An Integrated Evaluation of Climate Change and Environmental Sustainability in G20 Countries Using Advanced MCDM Methods
Sahin Macit, Nazife
This study analytically assesses the climate change and environmental sustainability performance of G20 countries using data from the 2024 Climate Change Performance Index (CCPI) and Environmental Performance Index (EPI) reports. The analysis employs Sum-Weighted Information (SWI) and Ranking Alternatives with Weights of Criterion (RAWEC), which are Logarithmic Decomposition of Criteria Importance (LODECI)-based multi-criteria decision-making (MCDM) methods. The study created three separate decision matrices, taking into account the CCPI and EPI criteria individually, as well as their combination. The criterion weights were determined using the LODECI method; greenhouse gas emissions, climate policy, and air quality were the most significant criteria. The results show that China and Saudi Arabia demonstrate strong environmental performance in CCPI-based rankings, while Germany, the United Kingdom and France demonstrate strong performance in EPIbased evaluations. In the integrated analysis, Germany ranked first using both methods. The consistency of the rankings obtained using the SWI and RAWEC methods was high, which supports the reliability of the analyses. However, some differences in ranking were observed depending on the method used, the distribution of criteria and the country sample. Overall, the study emphasizes the pivotal role of methodological diversity and data-driven approaches in multidimensional environmental assessments for policy-making, while demonstrating the robustness of the findings through sensitivity and comparative analyses.
AtıfOpenAlex2İncele - MakaleYalnız künye2025Economic vulnerability amidst contagion: analyzing unemployment via Covid-19-induced transaction costs
Cicen, Yildirim Beyazit
This study delves into the pandemic's influence on unemployment rates, employing the concept of transaction costs. Given the virus's infectious nature, each transaction carries the risk of infection. In this study, Covid-19-induced transaction costs were utilized to gauge the pandemic's impact on unemployment rates. Seven developed countries and seven developing countries were separately scrutinized for this purpose. According to the outcomes of Yilanci and Gorus' (2020) panel causality test, Covid-19-induced transaction costs did not influence unemployment rates in developed countries. However, they significantly impacted unemployment rates in developing countries. These findings underscore the resource gap between developed and developing nations in tackling pandemic-related challenges. Policymakers should consider these economic disparities when devising strategies to alleviate the pandemic's effects.