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The Effect of Different Open-Circuit Voltage Curves on the Accuracy of Model-Based State Estimation in Lithium-Ion Batteries
No full textDue to their unique characteristics, the condition monitoring of lithium-ion batteries in the applications where they are used is inevitable. Most of the condition monitoring approaches employed today are based on electrical equivalent circuit models (ECM). Currently, there are many different structures of ECM in use. However, the common component among all of them is the voltage source that provides the open circuit voltage (OCV), and its accuracy directly affects the results of the analyses. The voltage of this source depends on the state of charge (SoC) of the battery. This dependency varies based on the structure of the battery. Therefore, the relationship between the OCV and the SoC of a battery is determined using data obtained from experiments conducted for this purpose. These experiments involve complex processes, including charging, discharging, and/or operation at low current values. Due to the structure of lithium-ion batteries, the OCV curve obtained for charging differs from the one obtained for discharging. Therefore, in condition monitoring applications, OCV curves derived from these two processes are used in models based on different approaches. These approaches generally include four types of OCV curves derived from the data of charging and discharging experiments conducted at one-twentieth of the nominal current level: the charge curve alone, the discharge curve alone, the curve obtained by averaging the charge and discharge curves, and a curve that aligns with the discharge curve at high states of charge and the charge curve at low states of charge. In addition, OCV curves obtained directly from current and voltage data in Hybrid Pulse Power Characterization (HPPC) tests are also used. In this study, a different approach is examined, where the OCV during charging follows the charge curve and the OCV during discharging follows the discharge curve, based on the direction of the current. The results obtained from this approach are compared with those obtained using other approaches. In the comparisons, the mean absolute error and the root mean square error calculated during the estimation of the terminal voltage are used as criteria. The comparison shows that the lowest error values are achieved when the OCV and SoC curve obtained from low-current discharge experiments is used. © 2025 Elsevier B.V., All rights reserved.Selçuk Üniversitesi, S
Examination of Easement Right Implementations in Technical Infrastructure Projects within the Context of Land Consolidation Projects, and Legislative Proposals
No full textCurrently, water, energy transmission, sewage, communication, and natural gas pipelines—which constitute a significant portion of the technical infrastructure projects carried out by public institutions and organizations—are transported from one designated point to another to meet the needs of cities, neighborhoods, villages, and industrial zones. Public institutions require expropriation corridors with widths regulated by legislation in order to implement these technical infrastructure projects as facilities. These expropriation projects, prepared in a strip-like form, intersect immovable properties located within the boundaries of many provinces, districts, neighborhoods, and villages. Consequently, a portion of the necessary lands is acquired through expropriation from privately owned immovable properties. In technical infrastructure projects, easement rights are registered in the land registry under the rights and liabilities section, either based on mutual consent or by court decision, by specifying the intended use on privately owned lands. Due to the extensive length of these corridors, the easement rights registered in the land registry are included in numerous new projects nationwide, necessitating subsequent reorganization. This study examines the issues related to the 'expropriation of easement rights' that arise during the reorganization processes of land consolidation projects, which are among the major infrastructure projects. By analyzing the conditions of easement rights before and after reorganization through practical project implementations at various locations, and by identifying problems based on finalized court rulings, the study aims to propose legislative recommendations.Günümüzde kamu kurum ve kuruluşları tarafından gerçekleştirilen teknik altyapı projelerinin önemli bir kısmını oluşturan su, enerji nakil, kanalizasyon, iletişim ve doğal gaz boru hatları, şehirler, mahalleler, köyler ve sanayi alanlarının ihtiyaçlarını karşılamak üzere belirli bir noktadan başka bir noktaya taşınmaktadır. Kamu kurumları, bu teknik altyapı projelerini tesisler şeklinde hayata geçirmek için yönetmeliklerle genişliği sınırlandırılmış kamulaştırma koridorlarına ihtiyaç duymaktadır. Şeritvari biçiminde hazırlanan bu kamulaştırma projeleri, birçok il, ilçe, mahalle ve köy sınırlarında bulunan taşınmazlara denk gelmektedir. Bu nedenle, gerekli arazilerin bir kısmı özel mülkiyete ait taşınmazlardan kamulaştırma yoluyla temin edilmektedir. Teknik altyapı projelerinde irtifak hakları, özel mülkiyete konu arazilerde kullanım amacının belirtilmesi suretiyle, rızaya dayalı ya da mahkeme kararı ile tapu sicilinde hak ve mükellefiyetler hanesine tescil edilmektedir. Güzergâhların uzunluğu nedeniyle tapu siciline tescil edilen irtifak hakları, ülke genelinde birçok yeni proje kapsamında yer almakta ve yeniden düzenlenme ihtiyacı doğurmaktadır. Bu çalışmada, önemli teknik altyapı projelerinden birisi olan arazi toplulaştırma projelerinde irtifak haklarının düzenleme öncesi ve sonrası durumlarını muhtelif adreslerde yapılmış ve tescil ettirilmiş proje uygulamaları üzerinde değerlendirmeler yapılarak; oluşan 'irtifak hakkı kamulaştırması' sorunları incelenip, yargıya intikal eden ve kararı kesinleşmiş örnekler üzerinde sorunları tespit ederek yasamaya öneriler sunulmuştur
Search for Heavy Neutral Higgs Bosons a and H in the T(t)over-Barz Channel in Proton-Proton Collisions at 13 TeV
No full textTapper, Alexander/0000-0003-4543-864X; Rantanen, Milla-Maarit/0000-0002-6764-0016; Hall, Geoffrey/0000-0002-6299-8385; Zhang, Yousen/0000-0002-6812-761X; Grandi, Claudio/0000-0001-5998-3070; Viinikainen, Jussi/0000-0003-2530-4265; Lampen, Tapio/0000-0002-8398-4249; Pesaresi, Mark/0000-0002-9759-1083; Wilson, Graham/0000-0003-0917-4763; Vannerom, David/0000-0002-2747-5095; Yazgan, Efe/0000-0001-5732-7950; Garcia, Francisco/0000-0002-4023-7964; Barroso Ferreira, Mapse/0000-0003-3904-0571; Martikainen, Laura/0000-0003-1609-3515; Smith, Nicholas/0000-0002-0324-3054; Chatterjee, Suman/0000-0003-2660-0349; Kyberd, Paul/0000-0002-7353-7090; Giacomelli, Paolo/0000-0002-6368-7220; Luukka, Panja/0000-0003-2340-4641; Csanad, Mate/0000-0002-3154-6925; D'Anzi, Brunella/0000-0002-9361-3142; Mitra, Soureek/0000-0002-3060-2278; Kirschenmann, Henning/0000-0001-7369-2536; Pasztor, Gabriella/0000-0003-0707-9762; Linden, Tomas/0009-0002-4847-8882;A direct search for new heavy neutral Higgs bosons A and H in the t (t) over barZ channel is presented, targeting the process pp -> A -> ZH with H -> t (t) over bar. For the first time, the channel with decays of the Z boson to muons or electrons in association with all-hadronic decays of the t (t) over bar system is targeted. The analysis uses proton-proton collision data collected at the CERN LHC with the CMS experiment at root s = 13 TeV, which correspond to an integrated luminosity of 138 fb(-1). No signal is observed. Upper limits on the product of the cross section and branching fractions are derived for narrow resonances A and H with masses up to 2100 and 2000GeV, respectively, assuming A boson production through gluon fusion. The results are also interpreted within two-Higgs-doublet models, where A and H are CP-odd and CP-even states, respectively, complementing and substantially extending the reach of previous searches.Individuals have received support from the Marie-Curie programme and The European Research Council and Horizon 2020 Grant, contract Nos. 675440, 724704, 752730, 758316, 765710, 824093, 101115353, 101002207, and COST Action CA16108 (European Union); the Leventis Foundation; The Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Science Committee, project no. 22rl-037 (Armenia); the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the F.R.S.-FNRS and FWO (Belgium) under the "Excellence of Science - EOS'' - be.h project n. 30820817; the Beijing Municipal Science ; Technology Commission, No. Z191100007219010 and Fundamental Research Funds for the Central Universities (China); The Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Shota Rustaveli National Science Foundation, grant FR-22-985 (Georgia); the Deutsche Forschungsgemeinschaft (DFG), among others, under Germany's Excellence Strategy - EXC 2121 "Quantum Universe'' - 390833306, and under project number 400140256 - GRK2497; the Hellenic Foundation for Research and Innovation (HFRI), Project Number 2288 (Greece); the Hungarian Academy of Sciences, the New National Excellence Program - UNKP, the NKFIH research grants K 131991, K 133046, K 138136, K 143460, K 143477, K 146913, K 146914, K 147048, 2020-2.2.1-ED-2021-00181, TKP2021-NKTA-64, and 2021-4.1.2-NEMZ_KI (Hungary); the Council of Science and Industrial Research, India; ICSC - National Research Centre for High Performance Computing, Big Data and Quantum Computing and FAIR - Future Artificial Intelligence Research, funded by the NextGenerationEU program (Italy); the Latvian Council of Science; the Ministry of Education and Science, project no. 2022/WK/14, and the National Science Center, contracts Opus 2021/41/B/ST2/01369 and 2021/43/B/ST2/01552 (Poland); the Fundacao para a Ciencia e a Tecnologia, grant CEECIND/01334/2018 (Portugal); the National Priorities Research Program by Qatar National Research Fund; MCIN/AEI/10.13039/501100011033, ERDF "a way of making Europe'', and the Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu, grant MDM-2017-0765 and Programa Severo Ochoa del Principado de Asturias (Spain); the Chulalongkorn Academic into Its 2nd Century Project Advancement Project, and the National Science, Research and Innovation Fund via the Program Management Unit for Human Resources ; Institutional Development, Research and Innovation, grant B39G670016 (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, contract C-1845; and the Weston Havens Foundation (USA).Marie-Curie programme; European Research Council; Horizon 2020 Grant [675440, 724704, 752730, 758316, 765710, 824093, 101115353, 101002207]; COST Action [CA16108]; Leventis Foundation; Alfred P. Sloan Foundation; Alexander von Humboldt Foundation; Science Committee [22rl-037]; Belgian Federal Science Policy Office; Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); FWO (Belgium) under the "Excellence of Science - EOS [30820817]; Beijing Municipal Science ; Technology Commission [Z191100007219010]; Fundamental Research Funds for the Central Universities (China); Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; Shota Rustaveli National Science Foundation [FR-22-985]; Deutsche Forschungsgemeinschaft (DFG) [EXC 2121, 390833306, 400140256 - GRK2497]; Hellenic Foundation for Research and Innovation (HFRI) [2288]; Hungarian Academy of Sciences [K 131991, K 133046, K 138136, K 143460, K 143477, K 146913, K 146914, K 147048, 2020-2.2.1-ED-2021-00181, TKP2021-NKTA-64, 2021-4.1.2-NEMZ_KI]; Council of Science and Industrial Research, India - NextGenerationEU program (Italy); Latvian Council of Science; Ministry of Education and Science [2022/WK/14]; National Science Center [Opus 2021/41/B/ST2/01369, 2021/43/B/ST2/01552]; Fundacao para a Ciencia e a Tecnologia [CEECIND/01334/2018]; National Priorities Research Program by Qatar National Research Fund; ERDF "a way of making Europe [MDM-2017-0765]; Programa Severo Ochoa del Principado de Asturias (Spain); National Science, Research and Innovation Fund via the Program Management Unit for Human Resources ; Institutional Development, Research and Innovation [B39G670016]; Kavli Foundation; Nvidia Corporation; SuperMicro Corporation; Welch Foundation [C-1845]; Weston Havens Foundation (USA
Application of Fuzzy Logic Control for Enhanced Speed Control and Efficiency in PMSM Drives Using FOC and SVPWM
No full textPMSMs (Permanent Magnet Synchronous Motors) are favored in industrial systems requiring fast dynamic response and precision, thanks to their high efficiency and torque-to-inertia ratio. To fully leverage these motors, advanced control techniques like Field-Oriented Control (FOC) are essential, as they decouple torque and flux. However, traditional FOC systems often use PI controllers, which suffer from limited adaptability and challenging tuning processes, especially in applications demanding quick responses. To overcome these limitations, the study compared fuzzy logic-based speed control strategies. Three control structures were modelled in MATLAB/Simulink, integrating SVPWM for enhanced performance: traditional FOC with PI controller, FOC with single-input Fuzzy Logic Controller (FLC), and FOC with two-input FLC (FLC2). The simulation results clearly demonstrated FLC2's superior performance, achieving only 0.53% overshoot and a 0.08-second settling time. Quantitative metrics like IAE, ITAE, and ISE further validated FLC2's superiority over conventional control structures. These findings prove that, particularly the two-input FLC, offers a robust and high-performance alternative to traditional PI control in industrial automation, electric vehicles, and energy-efficient motor applications. With its simplicity, adaptability, and improved control performance, FLCs can play a significant role in next-generation smart motor drive technologies
Enhanced Removal of Rhodamine B From Aqueous Solution Using a Novel Generation Photocatalyst Based Sb Doped SnO2nanoparticles
No full textAntimony-doped tin oxide (Sb doped SnOinf>2/inf>) nanoparticles were synthesized via a hydrothermal method and evaluated as photocatalysts for the degradation of Rhodamine B (RhB) dye under UV light irradiation. A series of Sb doped SnOinf>2/inf>nanostructures with varying Sb doping concentrations (0.1, 0.3, and 0.5 at.%) were synthesized and the effect of Sb incorporation on the structural, morphological, and photocatalytic properties of SnOinf>2/inf>have been investigated. X-ray diffraction and transmission electron microscopy analyses confirmed the effective doping of Sb into the SnOinf>2/inf>lattice without the formation of secondary phases. A systematic reduction in average particle size was observed with increasing Sb content: undoped SnOinf>2/inf>nanoparticles exhibited an average particle size of 4.6 ± 0.9 nm, which decreased to 4.0 ± 0.9 nm, 3.7 ± 0.8 nm, and 3.1 ± 0.6 nm for 0.1, 0.3, and 0.5 at.% Sb doping levels, respectively. This size reduction is attributed to the inhibitory effect of Sb on crystal growth during precipitation. X-ray photoelectron spectroscopy analyses revealed the coexistence of Sb3+and Sb5+oxidation states and a significant increase in surface oxygen vacancies, particularly at 0.3 at.% Sb doping level. Photocatalytic performance tests demonstrated that all Sb doped SnOinf>2/inf>samples exhibited enhanced RhB degradation efficiency compared to undoped SnOinf>2/inf>. Notably, the 0.3 at.% Sb doped SnOinf>2/inf>sample achieved 99.1 ± 0.2 % RhB removal within just 30 min and reached 99.9 ± 0.1 % after 90 min of UV irradiation. Kinetic studies showed that the degradation followed a pseudo-first-order model, with the highest apparent rate constant (kinf>app/inf> = 0.0537 ± 0.001 min−1) observed for the 0.3 at.% doped sample. Furthermore, this optimized catalyst exhibited excellent recyclability, maintaining 84 % of its degradation efficiency after five consecutive cycles. These results suggest that Sb doping, particularly at an optimal concentration of 0.3 at.%, effectively enhances the photocatalytic activity by tuning its particle size, electronic structure, and surface chemistry, making it a promising candidate for wastewater treatment applications. © 2025 Elsevier B.V., All rights reserved
Artificial Intelligence Ethics in Journalism: A Bibliometric Analysis and Visualization
No full textThe rapid growth of artificial intelligence (AI) technologies in journalism has transformed news production, content distribution, and ethical responsibilities. This study offers a systematic bibliometric analysis to map the structure, trends, and thematic focus of scholarly output on AI ethics in journalism. Based on 71 publications indexed in SSCI, AHCI, and ESCI and selected through PRISMA-guided criteria from the Web of Science, the study reveals a significant rise in ethical debates over the past five years. Citation analyses highlight key themes such as ethical norms, algorithmic journalism, and AI-assisted content creation, while emerging trends include transparency, accountability, and the role of social media. The findings indicate the formation of an interdisciplinary and evolving research field that addresses the ethical, professional, and societal implications of AI in journalism. As academic interest grows, the literature is expected to expand further, contributing to a more comprehensive understanding of AI's impact on journalistic practices
Co-Occurrence and Molecular Characterization of ESBL-Producing and Colistin-Resistant Escherichia Coli Isolates From Retail Raw Meat
No full textBackground: The emergence of extended-spectrum beta-lactamase (ESBL) producing and colistin-resistant Escherichia coli in retail meat poses a significant public health risk. Method: A total of 180 retail meat samples (chicken parts, internals, processed products; lamb; beef; fish) were purchased from markets and butcher shops across Turkiye. Presumptive ESBL-producing isolates were screened on chromogenic agar and phenotypically confirmed. Species identity was verified by uspA PCR, and resistance genes (blaCTX-M, blaTEM, blaOXA, blaSHV, mcr-1, mcr-2, mcr-3) were analyzed. Colistin MICs were determined by broth microdilution, while antimicrobial susceptibility of ESBL-positive isolates was assessed by disk diffusion. Results: Overall, ESBL-producing E. coli were detected in 21.7% (n = 39) of the 180 meat samples analyzed, with the highest prevalence observed in chicken parts (26/40, 65.0%) and giblets (6/10, 60%). All ESBL-E. coli isolates harbored blaCTX-M, with blaCTX-M-1 identified as the sole variant. The blaTEM gene was detected in 61.5% (24/39) of ESBL-positive E. coli isolates. Colistin resistance was identified in six isolates (15.4%), all of which carried the mcr-1 gene. Additionally, one lamb minced meat isolate harbored the mcr-2 gene. Co-occurrence analysis revealed that the most frequent resistance gene combination among ESBL-producing isolates was blaCTX-M1 + blaTEM, detected predominantly in chicken meat samples, while mcr-1 was observed only in isolates harboring single or limited resistance genes, suggesting a distinct acquisition pattern. Conclusions: A high prevalence of blaCTX-M-1 and the co-occurrence of mcr genes were detected in E. coli isolates from retail meat, particularly poultry. The detection of mcr-1/mcr-2 co-carriage in lamb meat, though rare, highlights the need for broader surveillance. These findings underscore the need for integrated monitoring and prudent antimicrobial use in food animals. The use of antibiotics as growth promoters is prohibited in T ; uuml;rkiye, and therapeutic applications require a veterinary prescription; however, stronger enforcement remains essential to limit the dissemination of multidrug-resistant bacteria in the food chain.Selcuk University Scientific Research and Project Coordination [21401116]This research was supported by the Selcuk University Scientific Research and Project Coordination, with project number 21401116
Medya Okuryazarlığının Medya Ön Yargıları, Yalan Haber Paylaşımı ve Medya Haberlerine Güven Üzerindeki Etkileri
No full textMedya araçlarındaki çeşitlenme, gelişen dijital ortamlar bilgi akışını ve yoğunluğunu daha da hızlandırmıştır. Geleneksel medyanın aksine, daha kolay ulaşılabilen yeni medya ile yalan haber, yanlış bilgi, dezenformasyon ve manipülasyon içeren içeriklere ulaşmak daha kolay hale gelmiştir. Özellikle yalan haber çağımızın önemli bir sorunu olarak hem bireysel hem de toplumsal olarak ciddi problemlere yol açabilecek bir potansiyele sahiptir. Medya okuryazarlığı, bireylerin medya içeriklerine karşı bilinçli yaklaşmaları ve medya metinlerini eleştirel bir bakış açısıyla çözümleyebilmeleri açısından, son yıllarda önemi giderek artan bir kavramdır. Dünyada farklı uygulama alanlarına sahip olan medya okuryazarlığı, ülkemizde ise ilköğretim düzeyinde ve iletişim fakültelerinde seçmeli ya da zorunlu ders olarak okutulmakta; bu sayede öğrencilerin medya içeriklerini bilinçli ve sorgulayıcı bir şekilde tüketmeleri hedeflenmektedir. Bu çalışma medya okuryazarlığının; medya ön yargıları, yalan haber paylaşımı ve medya haberlerine güven üzerindeki etkilerini ortaya koymayı amaçlamaktadır. Nicel araştırma yönteminin kullanıldığı çalışmada veriler, Türkiye’nin 7 farklı üniversitesindeki 600 öğrenciden yüz yüze anket tekniği ile toplanmıştır. Araştırmada sonucunda medya okuryazarlığının medya ön yargıları üzerinde pozitif; yalan haber paylaşımı ve medyaya güven düzeyi üzerinde negatif anlamlı etkisi tespit edilmiştir
Pressure-Sensitive Adhesive Thin Films with Tailored Properties via Solvent-Free Plasma Deposition of EHA/AA Copolymers
No full textGursoy, Mehmet/0000-0003-2275-9096This study employs plasma-enhanced chemical vapor deposition (PECVD) to address the limitations of conventional techniques in fabricating pressure-sensitive adhesive (PSA) thin films and to introduce advanced functionalities. PECVD provides a solvent-free, environmentally sustainable approach, allowing precise control over film composition and properties. PSA thin films were synthesized using varying feed ratios of 2-ethylhexyl acrylate (EHA) and acrylic acid (AA) monomers. The optimized PSA film was synthesized at a substrate temperature of 5 degrees C, reactor pressure of 150 mTorr, plasma power of 50 W, and an AA/EHA monomer flow rate ratio of 1.5. The chemical, physical, and mechanical characteristics of the films were systematically evaluated. The optimized film demonstrated a shear strength of 158 N/cm2 and a peel strength of 0.87 N/25 mm. Furthermore, the film exhibited excellent solvent resistance and high durability.Scientific and Technological Research Council of Turkey (TUBITAK) with a Grant No. of 123M924.Scientific and Technological Research Council of Turkey (TUBITAK) [123M924
Computational Modeling of Three-Dimensional Flow Around a Complex Bridge Pier by Different Methods
No full textHydrodynamic flow structures of a complex bridge pier have been scrutinized in the present study for a value of Reynolds number as Re = 3.87 × 104. Considering reference cases, different turbulence models have been compared with respect to variant flow structures and drag coefficient values obtained for steady and three-dimensional flow. For the pier, the maximum pressure value has been obtained at the point representing the first flow contact. The reason is the flow stagnation indicating the sudden decline of velocity values. Separated flow caused lower pressure region for the elements of the complex bridge pier. As a result of decreasing cross-sectional areas, flow acceleration between the piles has been observed. At the upstream, there are two dominant clusters representing cross-stream velocity components. The direction of rotation is clockwise for positive values while it is vice versa for negative ones. Moreover, drag coefficients have been obtained as 1.16 ≤ Cinf>D/inf> ≤ 1.178 via different turbulence models. Regarding the past results from literature, k-ω SST turbulence model is the most successful one when it comes to the drag coefficient. As a recommendation, the second one is k-ε Realizable turbulence model by the difference of 0.78% for the drag coefficient. The percentage difference of the drag coefficient is 1.47% obtained by Transition SST turbulence model. Similar situation is obvious for the flow characteristics compared to the reference study. © 2025 Elsevier B.V., All rights reserved