Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(77)
- Merdan, Mehmet(73)
- Duran, Celal(54)
- Ozdes, Duygu(50)
- Baltaci, Cemalettin(45)
- Kaygusuz, Abdullah(45)
- Kulakaç, Nurşen(39)
- Ashyralyyev, Charyyar(38)
- Karsli, Orhan(37)
- Demir, Selim(36)
- Öztürk, Serkan(36)
- Dokuz, Abdurrahman(35)
- Turan, Ibrahim(35)
- Araz, Onur(33)
- Kandemir, Raif(31)
- Sipahi, Ferkan(30)
- Topal, Fevzi(30)
- Kurt, Kemal(28)
- Peker, Iskender(28)
- Arslan, Mehmet(27)
- Baltacı, Cemalettin(27)
- Maden, Nafiz(27)
- Ozturk, Samet(27)
- Aydin, Aydanur(26)
- Vural, Alaaddin(26)
- Bayrakdaroglu, Serdar(25)
- Kurnaz, Muammer(25)
- Reis, Hatice Catal(25)
- Akar, Zeynep(24)
- Aydin, Faruk(24)
- Gücer, Mehmet Ali(24)
- Topal, Meryem(24)
- Yolcu, Halil(24)
- Yücel, Cem(24)
- Anaç, Halil(23)
- Kankal, Murat(23)
- Ürkek, Bayram(23)
- Aliyazicioglu, Yuksel(22)
- Günen, Mehmet Akif(22)
- Tuncer, Metin(22)
Yayınlar
- MakaleAçık Erişim2025Scopus SJRQ1Development and psychometric evaluation of the father-preterm infant bonding scale
Gül, Uğur; EFE, Emine; Bektaş, Murat
Objective: The purpose of this study is to describe the development process of the Father-Preterm Infant Bonding Scale (F-PIBS) and to report the results of its psychometric evaluation. Methods: A methodological, correlational, comparative, and cross-sectional design was employed. The study was conducted between June 2023 and September 2024 and included 182 fathers with preterm infants hospitalized in the Neonatal Intensive Care Unit (NICU). Exploratory and confirmatory factor analyses were performed to evaluate the reliability of the scale, and validity was tested using Cronbach's alpha reliability coefficient, split-half reliability, item-total correlations, and Hotelling's T-squared test. Results: The scale comprises 10 items distributed across two sub-dimensions. The content validity ratios of the scale items ranged from 0.80 to 1.00. Cronbach's alpha values for the total scale and sub-dimensions were 0.878, 0.796, and 0.845, respectively. Conclusion: F-PIBS is reliable, valid, and appropriate for evaluating father-preterm newborn bonding levels in the NICU.
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İncele - MakaleAçık Erişim2025Scopus SJRQ1Psychosocial problems experienced by intensive care nurses regarding sleep pattern within the scope of working conditions: A phenomenological study
Atasayar, Belgin Şen; Emirza, Elif Güzide; Uzun, Sevda
Background: Nurses working in intensive care units experience insomnia and accompanying psychosocial problems due to working conditions. Aim: This study explores with a phenomenological approach the psychosocial problems experienced by intensive care nurses regarding sleep patterns within the scope of working conditions. Study Design: In this phenomenological study, semi-structured in-depth interviews were conducted with 16 nurses working in the surgical intensive care unit of a state hospital in Türkiye. Criterion sampling method, one of the purposive sampling methods, was used to reach the sample group. Researchers' interviews continued until they reached data saturation. All interviews were recorded on a voice recorder after obtaining the necessary permissions from the nurses and then transcribed. The study data were evaluated using thematic analysis. The current manuscript was reported following the COREQ checklist. Results: Data analysis revealed three main themes (how working as an intensive care nurse changes sleep patterns, the relationship between shift work, work performance, patient care and how working as an intensive care nurse changes individual life and coping strategies) and nine subthemes (mental, physical, social, work performance, patient care, nutrition, family life, social life and coping). Conclusion: The study's findings revealed that nurses working in intensive care experienced psychosocial difficulties related to sleep patterns and had trouble coping. In particular, it was determined that sleep problems of intensive care nurses cause difficulties in family life, nutrition and social life. It is recommended that the number of personnel in workplaces be increased, overtime hours should be limited, and professional development and training on the importance of sleep for all nurses should be provided. Relevance to Clinical Practice: Nurses working in intensive care units may experience psychosocial problems due to working conditions, which may negatively change their coping skills. Therefore, organizing the working conditions of nurses positively changes their coping skills.
AtıfScopus6WoS6OpenAlex6İncele - MakaleAçık Erişim2025Scopus SJRQ2Investigation of Nonstandard Finite Difference for Fractional Order Covid-19 Model
Merdan, Mehmet; Acikgoz, Pınar
This article examines a mathematical model of the Covid-19 type. We demonstrate how the population is impacted by immigration, protection, the mortality, exposure, curing, and interactions between sick and healthy individuals. There are five classifications in our model: exposed, susceptible, infected, quarantined, and recovered. The model is subjected to numerical and fractional analysis in this instance. The numerical analysis is performed using the fractional order non-standard finite difference (NSFD) scheme. The Grunwald-Letnikov numerical approximation technique is used for fractional analysis. The findings are evaluated by simulations using the Matlab tool.
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İncele - MakaleYalnız künye2025Scopus SJRQ3Factors Affecting Separation Anxiety Disorder in Adolescent Earthquake Survivors: The Case of Kahramanmaraş Earthquakes (2023)
Kiymis, Ibrahim; Dogan, Ahsen Aydin
Objective The Kahramanmaras Earthquakes (2023) are the largest and most devastating earthquakes in the history of the Republic. The effects of these earthquakes are particularly deeply felt among younger generations and trigger various psychological factors. Therefore, the aim of this study is to measure the levels of post-traumatic stress disorder (PTSD), social phobia (SP), generalized anxiety disorder (GAD), and depression on separation anxiety disorder (SAD) among adolescent earthquake survivors affected by the Kahramanmaras Earthquakes (2023). Methods In the study, the data were obtained using a survey method. A total of 605 adolescent earthquake survivors exposed to the Kahramanmaras earthquakes were reached. The research was analyzed using structural equation modeling (SEM). Results Surprisingly, according to the research findings, there was no significant and positive relationship between SP (β = -0.006, P > 0.05) and Depression (β = -0.117, P > 0.05) on SAD. Conclusions Consequently, while PTSD and GAD had significant and positive effects on SAD in those adolescent earthquake survivors affected by the Kahramanmaras Earthquakes (2023), SP and Depression did not have significant and positive effects on SAD. Therefore, it is recommended that future studies examine the effects of SP and Depression on SAD more comprehensively and in detail through qualitative research.
AtıfOpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ2The biological activity and phenolic content of endemic Astragalus baibutensis
Ozcan, Kadriye; Acet, Tuba; Yiğittürk, Gürkan
Astragalus baibutensis, is a plant endemic to Turkey, belonging to Fabaceae family, that is used as a folk medicine and food in this country. The purpose of this study is to find out the biological activities such as antioxidant, antimicrobial, enzyme inhibitory and DNA protective activity and also analyse the phenolic contents of the plant. To determine of antioxidant activity ABTS and DPPH assays were performed. Disc diffusion and microdilution methods were used to evaluate the antimicrobial activity. Additionally, enzyme inhibitory activities such as α-amylase, α-glucosidase, and tyrosinase were determined by using spectrophotometric methods. DNA protective activity was detected using pUC19 Plazmid DNA. The antiproliferative effect on SKOV-3 human ovarian cancer cells was examined by WST-8 assay. In addition, the phenolic contents were analysed by using HPLC. The biological activity of ethyl acetate extract of the root was found to be higher than those of other extracts. This extract had the highest amount of apigenin as phenolic compound. On the other hand, extracts showed moderate inhibition against the tested microorganism and antiproliferative properties in a concentration-dependent manner toward ovarian cancer cells. According to the results, Astragalus baibutensis has the potential for pharmaceutical and food additive usage.
AtıfScopus1WoS1OpenAlex1İncele - MakaleYalnız künye2025Scopus SJRQ4Synthesis of New Triazole Compounds: Determination of Antiurease and Antioxidant Activities
Gümrükçüoğlu, T.İ.; Akgün, H.; Sökmen, B. Bilgin; Bektaş, H.
Abstract: Objective: In this study, we synthesized five novel triazole derivatives and biologically evaluated their antiurease and antioxidant properties. Methods: Five novel 1,2,4-triazole derivatives (5a–5e) were synthesized and tested for their urease inhibition and antioxidant activities using spectrophotometric methods. Results and Discussion: All compounds exhibited varying degrees of biological activity, with compound 5c demonstrating the most potent urease inhibition and radical scavenging capacity. Statistical analysis confirmed significant differences among the compounds, particularly highlighting the superior performance of 5c. Conclusions: These results suggest that halogen-substituted triazoles are promising candidates for further pharmacological development aimed at oxidative stress-related conditions and urease-associated pathologies.
AtıfScopus1WoS1OpenAlex1İncele - MakaleYayıncıda açık erişim2025Scopus SJRQ3Optimization of rare earth elements recovery from Kızıldag (Karaman-Türkiye) shale ore using response surface methodology
Uysal, Turan; Ünal, Ceren Erust; Akça, Muhammet Esat; Sis, Hikmet; Erdemoğlu, Murat
In this study, the usability of bauxite-related shale ore, rich in Rare Earth Elements (REEs), to produce REEs, which have high added value and critical importance, was investigated. In this context, Kızıldag (Karaman-Türkiye) shale ore, was prepared for tests through size reduction and sampling processes. HCl leaching was performed at different acid concentrations, leaching times, leaching temperatures, and liquid/solid ratios to determine the optimum leaching conditions for the milled ore. The modeling and optimization parameters related to leaching recovery were investigated using the response surface method (RSM). The results were evaluated using analysis of variance, three-dimensional graphs were drawn, and the accuracy of the models was discussed. Accordingly, optimum values were found, and the REE leaching recovery corresponding to these optimum values was 49.13%. It was concluded that the optimization results were compatible with the experimental results, and the average error rate (6.35%) was low.
AtıfScopus3WoS4OpenAlex4İncele - MakaleAçık Erişim2025Scopus SJRQ1Patients' Experiences With Complementary and Alternative Treatments to Manage Chemotherapy Symptoms: A Phenomenological Study
Özmaya, Esma; Uzun, Sevda
This phenomenological study aims to explore the experiences of individuals undergoing chemotherapy, focusing on their symptoms and the use of complementary and alternative treatments to cope with these challenges. Thirteen individuals diagnosed with cancer in a city in the central region of Turkey were interviewed using a semi-structured, in-depth approach in this phenomenological study. The criterion sampling method was employed to select participants, and interviews continued until data saturation was achieved. Thematic analysis was applied to the audio-recorded and transcribed interviews. The study adhered to the COREQ checklist for reporting qualitative research. The data analysis revealed 2 main categories (effects of cancer and chemotherapy on individuals, the use of complementary and alternative treatments to cope with the symptoms of patients receiving chemotherapy) and 6 themes (psychological effects, social impacts, physical effects, social practices, psychological practices, and physical practices). The study demonstrated that individuals faced significant psychological, physical, and social challenges due to cancer, posing difficulties in coping. The symptoms had a substantial negative impact on individuals. The research identified the use of various alternative methods, such as yoga, the Mediterranean diet, and music therapy, as coping strategies. It is recommended that individuals undergoing chemotherapy explore complementary and alternative treatment methods to effectively manage symptoms.
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ3Comparison of drop table and diversified chiropractic techniques in patients with non-specific neck pain; [Comparação das técnicas quiropráticas drop table e diversified em pacientes com dor cervical inespecífica]
Kızıltoprak, Dünya Tajik; Hatıp, Sefa Haktan; Kızıl, Ömer Dicle; Aydın, Emine Büşra
Introduction: Neck pain is a common musculoskeletal disorder associated with pain, reduced cervical mobility, and decreased muscle strength, often leading to functional limitations. Chiropractic manipulation is widely used as a conservative treatment, yet the comparative effects of different techniques remain unclear. ## Objective To compare the effects of the diversified and drop table chiropractic techniques on pain, cervical range of motion, and muscle strength in individuals with non-specific neck pain. ## Methods This randomized controlled clinical trial included 45 participants with non-specific neck pain, randomly assigned to three groups: diversified (DG; n = 15), drop table (DTG; n = 15), and control (CG; n = 15). Interventions were applied twice weekly for four weeks. The primary outcome measure was pain level assessed using the McGill Pain Questionnaire. Secondary outcome measures were cervical joint range of motion assessed with a goniometer and isometric neck muscle strength assessed using a microFET2 dynamometer. Outcomes were assessed pre- and post-intervention. ## Results Both DG and DTG demonstrated significant increases in cervical range of motion compared with the CG. Pain levels significantly decreased in both intervention groups. DG showed significant improvements across all isometric muscle strength measures, while DTG demonstrated selective improvements in flexion and right lateral flexion. CG showed no significant changes, except a decrease in extensor strength. ## Conclusion Chiropractic interventions effectively reduce pain and enhance cervical function in individuals with non-specific neck pain. The diversified technique provided broader muscle strength improvements, while the drop table technique showed more selective effects, emphasizing the need for individualized technique selection in clinical practice. Open access and CC-BY licensed.
- MakaleAçık Erişim2025Scopus SJRQ1The technology, innovation, and income inequality nexus: an investigation on G7 countries
Çelik, Orkun; Sayın, Ferhan
This paper aims to explore the causality nexus among technology, innovation, and income inequality for G7 countries. For this aim, the bootstrap panel Granger approach is employed. The dataset covers the years between 1981 and 2015. Using two different Gini coefficients with pre-tax and post-tax income, the impact of income taxes on the nexus above is investigated. The results indicate that the bi-directional causality nexus is not detected in G7 countries except France. The signs of the nexus become different by countries. In this differentiation, income tax plays an important role. The novelty of this paper is to consider both the bi-directional causality and the effect of income tax in the technology, innovation, and income inequality nexus. It is thought that obtained findings may play a significant role in determining income distribution policies for policymakers.
AtıfScopus2WoS3OpenAlex3İncele - MakaleAçık Erişim2025Scopus SJRQ2Effects of Temperature and Time on the Diffusion Bonding of 316L Stainless Steel and H13 Hot Work Tool Steel
Aydın, Kemal; Yıldırım, Mehmet Serkan; Kaya, Yakup
This study examines the diffusion bonding of 316 L stainless steel and H13 hot work tool steel, aiming to optimize process parameters and assess the resulting microstructural and mechanical properties. Both materials were bonded at varying temperatures (700, 750, and 850 °C) and times (15, 30, and 60 min). The joints are analyzed using scanning electron microscopy (SEM), energy-dispersive spectroscopy, and X-ray diffraction (XRD) to evaluate interfacial morphology, chemical composition, and phase formation. Microhardness measurements indicate an increase in hardness from the 316 L side to the H13 side, suggesting intermetallic phase formation. Shear strength tests show the highest strength at 850 °C for 30 min, with longer times leading to strength reduction due to brittle intermetallic compounds. SEM analysis reveals improved bonding interfaces with fewer voids at higher temperatures and longer times, but the Kirkendall effect causes void formation, negatively impacting mechanical properties. XRD confirms α-Fe and γ-Ni phases, with Fe3C forming at 850 °C for 60 min. This study underscores the importance of process parameters in optimizing joint properties and minimizing brittle phase formation, providing insights for industrial applications requiring robust and corrosion-resistant joints.
AtıfScopus5WoS3OpenAlex4İncele - MakaleYalnız künye2025Scopus SJRQ3Estimation of Population Mean Using Some Improved Imputation Methods for Missing Data in Sample Surveys
Pandey, M.K.; Singh, G.N.; Zaman, Togla
Abstract.: In this research article, we present novel imputation methods designed to address missing data challenges in sample surveys. We then introduce innovative estimation procedures for calculating population means based on these methods. Our study thoroughly examines the properties of these new estimation procedures, assessing their biases and mean square errors. Through the use of both real and simulated data sets, we demonstrate the superior performance of our proposed estimators compared to existing methods in similar scenarios. In conclusion, we offer practical recommendations for survey practitioners.
AtıfScopus8WoS9OpenAlex11İncele - MakaleAçık Erişim2025Scopus SJRQ1Flexural Behavior and Sustainability of Dual-Waste Fiber-Reinforced Concrete Designed for Pavement Applications
Seferoğlu, Mehmet Tevfik; Aksüt, Yavuz Selim; Seferoğlu, Ayşegül Güneş
This study evaluates the mechanical performance and sustainability potential of fiber-reinforced concrete incorporating mine tailings as the fine aggregate and waste tire wire as the reinforcing fiber. The concrete mixtures contained 0.2%, 0.4%, and 0.6% waste tire wire with the natural fine aggregate replaced entirely with Pb-Zn-Cu tailings. The mixtures were tested for porosity, water absorption, compressive strength, splitting tensile strength, flexural strength, toughness, fracture energy, and ductility to assess their mechanical performance and durability. The mine tailings improved the microstructure and reduced water absorption, particularly with tire wire. Using waste tire wire improved the compressive, tensile, and flexural performance; in particular, W-6 showed a 18.2% rise in compressive strength and a more than twofold increase in flexural strength relative to the control mix. The flexural toughness and fracture energy rose by up to 161%, while the ductility peaked at a fiber content of 0.2%. These gains were attributed to fiber crack-bridging and post-cracking energy absorption. The dual-waste system also reduced porosity, improved durability, and demonstrated strong potential for rigid pavement applications such as highways, industrial yards, and airport runways that require high fatigue resistance and a long service life. Beyond technical performance, this approach offers a sustainable solution that lowers maintenance, reduces life-cycle costs, and aligns with circular economy principles.
AtıfScopus1İncele - Kitap BölümüYalnız künye2025Carbon Pricing in the Fight Against Climate Change: The Impact of the Carbon Border Adjustment Mechanism on Public Revenues and Revenue Redistribution
Uğur, Candan Yilmaz
This study focuses on the fiscal aspect of the Carbon Border Adjustment Mechanism (CBAM) introduced by the European Union (EU) and aims to examine the use of revenues from the mechanism for developed and developing countries. The CBAM aims to prevent carbon leakage and promote environmental sustainability through carbon pricing, while at the same time generating significant public revenue for the EU. The envisaged use of these revenues in strategic areas such as green transformation, sustainable infrastructure projects and similar is an important step in contributing to the EU's environmental goals. However, given the risk that underdeveloped and developing countries are disproportionately affected by CBAM, the need for effective use of these revenues in these countries becomes even more evident. In this context, the effective use of CBAM revenues in less developed and developing countries is considered as an important tool to support not only environmental sustainability but also the economic and social transformation processes of these countries.
- MakaleAçık Erişim2025Scopus SJRQ1Evaluation of Antioxidant and Enzyme Inhibition Properties of Siran Propolis: Correlations With Phenolic Content Determined by LC–MS/MS
Balci, Neslihan; Aslan, Kubra; Erturk, Adem; Gulcin, Ilhami
This study evaluates the antioxidant activity, enzyme inhibition potential, and phenolic composition of ethanolic Siran propolis extract. Antioxidant capacity was measured using reducing power (CUPRAC, FRAP, and Fe3+-reducing) and radical scavenging (DPPH·, ABTS·+, and DMPD·+) assays. The extract showed strong reducing ability, surpassing standard antioxidants in CUPRAC and FRAP assays, correlating with high ferulic acid (40.40 mg/g) and p-coumaric acid (88.60 mg/g) levels identified by LC–MS/MS. While it demonstrated notable DPPH· scavenging (IC50: 30.14 μg/mL), ABTS·+ activity was weaker (IC50: 272.44 μg/mL). Enzyme inhibition assays indicated effective inhibition of α-glycosidase, AChE (IC50: 2.15 μg/mL), hCA I, and hCA II. Notably, AChE inhibition was stronger than the standard tacrine inhibitor (IC50: 8.82 μg/mL), suggesting neuroprotective potential. The observed bioactivities are attributed to synergistic effects of phenolic acids and flavonoids, including quercetin, luteolin, taxifolin, and resveratrol. These findings highlight Siran propolis as a promising natural antioxidant and enzyme inhibitor source with potential therapeutic applications and food formulations.
AtıfScopus12WoS12OpenAlex11İncele - MakaleAçık Erişim2025Scopus SJRQ2The effect of high SiC ratio on the physical, mechanical, tribological and corrosion behavior of Al2024 alloy matrix composites fabricated by powder metallurgy
Beder, Murat; Varol, Temel; Akçay, Serhatcan Berk; Çuvalcı, Hamdullah; Erdemir, Fatih; Khan, M Adam; Yıldız, Uğur Temel
Reinforcing materials used in the production of metal matrix composites are used to improve the properties of the final composite. However, the compatibility between matrix and reinforcement and the reinforcement ratio directly affects the properties of the composite material. For this reason, low reinforcement ratios are preferred in many studies on ceramic particle reinforced composites. Unlike conventional studies, in this study, the effects of 10 wt%, 20 wt% and 40 wt% SiC content on the microstructure, dry wear properties and corrosion properties of Al2024 matrix composites were investigated. θ phase content became higher as the SiC content was increased. Hardness values increased with increasing SiC reinforcement. The highest value (307.68 HB) was obtained for the composite with 40 wt% SiC reinforcement, an increase of more than 100%. A decrease in volume loss with increasing SiC reinforcement was observed in the friction and wear tests. For 5 N of load and 1200 m of sliding distance, it was found that an addition of 40 wt% of SiC particles in Al2024 matrix results decrease in volume loss by almost 722%.
AtıfScopus8WoS7OpenAlex7İncele - MakaleYalnız künye2025Scopus SJRQ3Kinetics and Isotherm Evaluation for Adsorptive Removal of Anionic and Cationic Dyes from Aqueous Media by Sulfuric Acid-Modified Beech Sawdust
Ozdes, Duygu; Ozeken, Sengul Tugba; Top, Yener; Kalkisim, Ozgun; Duran, Celal
A novel and efficient adsorbent was prepared by modifying Fagus orientalis L. (beech) sawdust with H2SO4. The adsorption behavior of H2SO4-modified beech sawdust (SMBS) was investigated by batch experiments to offer a straightforward, inexpensive, and effective method for the retention of anionic and cationic model dyes, indigo carmine (IC) and methylene blue (MB), from wastewater. The experimental conditions were optimized by investigating the effects of the initial pH, initial concentrations of IC and MB dyes, dosage of SMBS, period of the contact, and the presence of salts in the aqueous media on the adsorptive performance of SMBS. The initial pH values of the aqueous solutions, from which IC and MB dyes will be removed, were optimized as 2.0 and 6.5 (natural), respectively. The optimum contact time for the adsorption of both dyes onto SMBS was determined to be 240 min. The mechanisms in the adsorption of IC and MB onto SMBS were investigated by evaluating the experimental data through different isotherm and kinetic models. The Langmuir isotherm model and pseudo-second order kinetic model performed well in explaining the mechanism of adsorption. Langmuir monolayer adsorption capacity of SMBS adsorbent was 38.85 mg g−1 for IC and 58.82 mg g−1 for MB. As a result, CMCP exhibited excellent performance in adsorbing organic pollutants, providing a low-cost and easily prepared alternative to other adsorbents found in the literature.
- MakaleYalnız künye2025Prioritisation of Human Resource Strategies in the Digital Transformation Process of SMEs
Olubiyi, Timilehin Olasoji; Longe, Olumide Babatope; Susela Devi, K. Suppiah; Sinha, Mudita; Şimşek, Tuğçe; Şimşek, Ahmet Bahadır; Olubiyi, TO; Longe, OB; Devi, KSS; Sinha, M
This chapter focuses on the importance of human resource (HR) management strategies in the digital business strategy for small- and medium-sized enterprises (SMEs). With the increasing influence of digital transformation that alters organisational structures and implements new technologies, SMEs have no other choice but to evolve. However, due to the scarcity of resources, it becomes very important for SMEs to allocate its HR appropriately and effectively. To support decision-making on strategies like employee reskilling, recruitment of digital talent, leadership development, and promoting a digital culture, this chapter presents a multi-criteria decision analysis (MCDA) framework. The prioritisation is crucial because not all the strategies can be executed at once, and SMEs should target the most effective ones in the long run, affordable, and relevant to their digital transformation agenda. This chapter illustrates methods for how SMEs can use the proposed prioritisation framework effectively. The hypothetical case study demonstrates the real challenges faced by SMEs during digital transformation and how MCDA assists leaders in selecting the most beneficial HR strategies. The case highlights the necessity of fitting strategies to organisational challenges to allow the customisation of training and leadership to align with business demands and maximise effectiveness while minimising costs. Upon use, this framework enables SMEs to comprehend and direct their digital transformation path more effectively.
- MakaleAçık Erişim2025Scopus SJRQ2A new approach to solving local fractional Riccati differential equations using the Adomian-Elzaki method
Aydemir, Hilal; Merdan, Mehmet; Demir, Ümit
The Elzaki-Adomian decomposition method (EADM) is intended to serve as an efficient analytical method for the resolution of these original fractional-order Riccati differential equations. This can be accomplished permanently by incorporating the Adomian decomposition method with Elzaki. The local fractional derivative is implemented in this format. Particularly in the context of nonlinear differential equations (ODE), this approach is preferred over digital gaps. Additionally, the method’s convergence. Random individuals with uniform, beta, normal, and gamma distributions are used to select the initial conditions or coefficients of the equations. The variance, confidence interval, and expected value of the solutions that are obtained will be determined. MATLAB (2013a) package software will be employed to display the individuals that were brought together, and the results will be analyzed randomly.
AtıfScopus1WoS1OpenAlex2İncele - MakaleAçık Erişim2025Scopus SJRQ4THE REGRESSION ANALYSIS AND DETERMINATION OF MECHANICAL AND PHYSICAL PROPERTIES ON GEOPOLYMER COMPOSITES UNDER THERMAL AND WATER CURING
Cavdar, Ozlem; Temizer, Hulya
Increasing costs due to high energy consumption and the release of harmful CO2 gases in cement production have made it necessary to explore alternative binders. This study aims to investigate the physical and mechanical properties of geopolymer mortars containing different proportions of pozzolanic wastes under different cure conditions. For this objective, fly ash obtained from the Sivas/Turkey thermal power plant and blast furnace slag obtained from the Bolu/Turkey iron-steel industries were used as the binding materials. Thermal curing and water curing were applied, and three different molar ratios (8M, 10M, 12M) of NaOH solution and Na2SiO3 were used. The results showed that the reaction products, types of alkaline activators, and reaction conditions are important factors in geopolymer mortars. The highest compressive strength recorded was 84.7 MPa in the geopolymer sample which consisted of 95% blast furnace slag blast furnace slag and 5% fly ash fly ash. Furthermore, two different binder additives (marble powder and strontium) were used and their time-dependent effects on the main binder were analysed. In addition, according to the ANOVA statistical results, the R2 value of the independent variables (Molarity, main binder ratios) on the compressive strengths accepted as the dependent variable is 81.7%. The significance value is 0.007, and these results were considered quite significant.
AtıfScopus1WoS1OpenAlex2İncele