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DÖVİZ KURU VE BANKACILIK ENDEKSİ İLE SEÇİLİ MAKROEKONOMİK GÖSTERGELER ARASINDAKİ UZUN DÖNEMLİ ASİMETRİK İLİŞKİ: BRICS VE MINT ÜLKELERİ
No full textDünyada bankacılık sektörünün gelişmesi ve finansal sistemde önemli bir paya sahip olması ile birlikte banka getirilerinin de önemi artmaktadır. Bankacılık sektöründe yer alan hisse senetleri de yatırımcılar tarafından tercih edilen finansal varlıklar arasında yer almaktadır. Bu çalışmanın amacı benzer makroekonomik göstergelere sahip BRICS ve MINT ülkelerinin banka-finans endeksleri, döviz kurları ve seçili makroekonomik göstergeler arasındaki uzun dönemli ilişkiyi hem doğrusal (ARDL) hem de doğrusal olmayan (NARDL) yöntemler kullanarak araştırmaktır. Bu amaca ulaşmak için değişkenlerin Ocak 2013 – Mayıs 2023 dönemlerine ait aylık verileri kullanılmıştır. Araştırmadan ARDL ve NARDL yöntemlerinden elde edilen sonuçlara göre Türkiye, Hindistan, Endonezya’da değişkenler arasında uzun dönemli ilişki olduğu tespit edilmiştir
Development and assessment of alternative designs for side impact beam
No full textSide collisions are the second most important cause of death and injury in traffic accidents. Such collisions are riskier than frontal collisions as there are no unique bumpers to absorb the impacts and the space between the passenger and the door is very limited. Therefore, one of the most studied collision types in vehicle safety research is side collisions. Passenger safety is ensured by the A, B, C-Pillar and the side impact beam. This study aims to design and test a composite side door impact beam with a higher strength/weight ratio against impacts. For this purpose, side impact beam design alternatives were created from glass fiber reinforced polymer composite and carbon fiber polymer composite materials, and the samples were tested to obtain maximum force, maximum stress, force/weight ratio, stress/weight ratio, energy absorption ability, specific energy absorption, cost, and mass results. Then, the effectiveness of the designed side impact beams was discussed by comparing the results obtained from the quasi-static compression tests. The study results show that an optimum design can be suggested by evaluating such structural elements in terms of many parameters and establishing trade-off relations between the parameters. © 2022 Informa UK Limited, trading as Taylor & Francis Group
A novel artificial hummingbird algorithm improved by natural survivor method
No full textThe artificial hummingbird algorithm (AHA) has been applied in various fields of science and provided promising solutions. Although the algorithm has demonstrated merits in the optimization area, it suffers from local optimum stagnation and poor exploration of the search space. To overcome these drawbacks, this study redesigns the update mechanism of the original AHA algorithm with the natural survivor method (NSM) and proposes a novel metaheuristic called NSM-AHA. The strength of the developed algorithm is that it performs population management not only according to the fitness function value but also according to the NSM score value. The adopted strategy contributes to NSM-AHA exhibiting powerful local optimum avoidance and unique exploration ability. The optimization ability of the proposed NSM-AHA algorithm was compared with 21 state-of-the-art algorithms over CEC 2017 and CEC 2020 benchmark functions with dimensions of 30, 50, and 100, respectively. Based on the Friedman test results, it was observed that NSM-AHA ranked 1st out of 22 competitive algorithms, while the original AHA ranked 8th. This result highlights that the NSM update mechanism provides a remarkable evolution in the convergence performance of the original AHA algorithm. Furthermore, two constrained engineering problems including the optimization of single-diode solar cell model (SDSCM) parameters and the design of a power system stabilizer (PSS) are solved with the proposed algorithm. The NSM-AHA algorithm provided better results compared to other algorithms with a value of 9.86E ? 04 root mean square error for SDSCM and 1.43E ? 03 integral time square error for PSS. The experimental results showed that the proposed NSM-AHA is a competitive optimizer for solving global and engineering problems. © The Author(s) 2024.Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTA
Prediction of daily global solar radiation in different climatic conditions using metaheuristic search algorithms: a case study from Türkiye
No full textToday’s many giant sectors including energy, industry, tourism, and agriculture should closely track the variation trends of solar radiation to take more benefit from the sun. However, the scarcity of solar radiation measuring stations represents a significant obstacle. This has prompted research into the estimation of global solar radiation (GSR) for various regions using existing climatic and atmospheric parameters. While prediction methods cannot supplant the precision of direct measurements, they are invaluable for studying and utilizing solar energy on a global scale. From this point of view, this paper has focused on predicting daily GSR data in three provinces (Afyonkarahisar, Rize, and Ağrı) which exhibit disparate solar radiation distributions in Türkiye. In this context, Gradient-Based Optimizer (GBO), Harris Hawks Optimization (HHO), Barnacles Mating Optimizer (BMO), Sine Cosine Algorithm (SCA), and Henry Gas Solubility Optimization (HGSO) have been employed to model the daily GSR data. The algorithms were calibrated with daily historical data of five input variables including sunshine duration, actual pressure, moisture, wind speed, and ambient temperature between 2010 and 2017 years. Then, they were tested with daily data for the 2018 year. In the study, a series of statistical metrics (R2, MABE, RMSE, and MBE) were employed to elucidate the algorithm that predicts solar radiation data with higher accuracy. The prediction results demonstrated that all algorithms achieved the highest R2 value in Rize province. It has been found that SCA (MABE of 0.7023 MJ/m2, RMSE of 0.9121 MJ/m2, and MBE of 0.2430 MJ/m2) for Afyonkarahisar province and GBO (RMSE of 0.8432 MJ/m2, MABE of 0.6703 MJ/m2, and R2 of 0.8810) for Ağrı province are the most effective algorithms for estimating GSR data. The findings indicate that each of the metaheuristic algorithms tested in this paper has the potential to predict daily GSR data within a satisfactory error range. However, the GBO and SCA algorithms provided the most accurate predictions of daily GSR data. © The Author(s) 2024.Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTA
Gerilla pazarlamanın Z kuşağının satın alma kararlarına etkisi
No full textLisansüstü Eğitim Enstitüsü, İşletme (İngilizce) Ana Bilim Dalı, İşletme (İngilizce) Bilim DalıÇalışmanın amacı gerilla pazarlamanın özelliklerini temsil eden reklam örnekleri ile oluşturulan 7 ayrı anket ile gerilla pazarlamanın z kuşağının satın alma kararları, güvenilirlik ve ağızdan ağıza pazarlama değişkenleri arasındaki etkileşimi araştırmaktır. Örneklem büyüklüğünün çoğunluğu Türkiye'de yaşayan Z Kuşağı ve Y Kuşağına mensup kişilerden oluşmaktadır. Sonuç olarak gerilla pazarlama özelliklerinin genel ve ağırlıklı olarak Z kuşağının satın alma kararlarına, güvenilirliğine ve ağızdan ağıza iletişimine pozitif etkisi olduğu anlaşılmıştır. Ayrıca Z kuşağının belirli değişkenler arasında moderatör etkisi olduğu görülmüştür.The aim of the study is to investigate the interaction between guerrilla marketing, generation Z purchasing decisions, reliability and word-of-mouth marketing variables with 7 separate surveys created with advertising examples representing the characteristics of guerrilla marketing. The majority of the sample size consists of people from Generation Z and Generation Y living in Turkey. As a result, it has been understood that guerilla marketing features generally and predominantly have a positive effect on the purchasing decisions, reliability and word-of-mouth communication of Generation Z. Additionally, it has been observed that Generation Z has a moderating effect among certain variables
A Pin Diode-Enabled PDMS Antenna for Transition between UWB and Filtered Narrowband Modes
No full textIEEE Antennas and Propagation Society (APS); Italian National Committee (ITNC); The Institute of Electrical and Electronics Engineers; US National Committee (USNC) of the International Union of Radio Science (URSI)2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024 -- 14 July 2024 through 19 July 2024 -- Florence -- 203041In this work, an ultrawide band printed antenna capable of switching frequency mode is proposed for smart flexible devices. The antenna is developed using Polydimethylsiloxane (PDMS) substrate owing to the advantage of transparency and flexibility with an overall size of 40 mm × 38 mm × 1 mm. The antenna radiating structure is composed of an elliptical shape radiator along with a filter, designed to pass lower band while filtering out the UWB spectrum. To achieve mode reconfigurability two pion diodes are inserted between the ports of antenna and radiating structure. Various antenna characteristics are discussed to provide the working mechanism of the antenna. Moreover, a brief comparison with state-of-the-art is performed to show the potential of methodology adopted to design proposed antenna. © 2024 IEEE
Identifying rejuvenation strategies in micro tourism destinations: the case of Kaş
No full textPurposeThis research paper aims to identify and provide insights into rejuvenation strategies in Ka & scedil; as a microtourism destination based on the views of stakeholders.Design/methodology/approachThe research utilizes a single-case design, applying an inductive approach to analyze data collected from semi-structured interviews. Thematic analysis was employed to analyze the data.FindingsThe inductive thematic analysis yields nine different main themes: product transformation, integrated sustainable development strategies, cooperation, promotion through the right channels, stable tourism policy, selective tourism strategy, tourism awareness, access to tourist movements and management and tools for monitoring the quality and sustainability of tourism.Practical implicationsThis research offers practical recommendations for regional authorities, residents and business stakeholders to foster sustainable tourism development by addressing resource utilization and existing challenges in the rejuvenation of Ka & scedil;.Originality/valueThis research contributes to theory by addressing the lack of applied research on the rejuvenation process in micro-tourism destinations, using Ka & scedil; (Turkey) as a case study. It identifies and emphasizes the unique challenges in microdestinations, enhancing our understanding and filling a critical knowledge gap. The identified rejuvenation strategies in Ka & scedil; are positioned to serve as a model for similar destinations, emphasizing their distinctive characteristics and challenges.Anadolu University Scientific Research Projects Commission [1809E303]This research was funded by Anadolu University Scientific Research Projects Commission(No: 1809E303)
Long latency trigemino-cervical reflex in restless legs syndrome
No full textObjective: The trigemino-cervical complex (TCC) seems under dopaminergic inhibitory control and the abnormalities of trigemino-cervical reflex (TCR) have been reported in disorders associated with the dopaminergic system and various pain disorders. If the inhibitory response in TCC is likely dopaminergic, we hypothesized that TCR, which has never been evaluated in restless legs syndrome (RLS) patients before, would be also abnormal. Methods: TCR was recorded from bilateral sternocleidomastoid and splenius capitis muscles in consecutive 15 drug-naive RLS patients and 16 age- and sex-matched healthy subjects. The right and left infraorbital branches of the trigeminal nerve were stimulated by percutaneous electrical stimulation separately. The presence rates, onset latencies, amplitudes, and durations of responses were measured and compared between patients with RLS and controls. Results: The presence rates, onset latencies and amplitudes of TCR responses were similar between RLS patients and controls, however, the durations of responses were bilaterally longer in RLS patients compared to healthy volunteers. Conclusions: Hyperexcitability of TCR suggests defective sensory processing in the brainstem probably due to impairment of descending inhibitory dopaminergic system in RLS. The sensitization of TCC in RLS patients may also be a possible factor that might explain the association of RLS and pain disorders. © 2022 Informa UK Limited, trading as Taylor & Francis Group
FİKRİ MÜLKİYET HAKLARINA İLİŞKİN SÖZLEŞMELERDE İŞÇİ BULUŞLARINA UYGULANACAK HUKUK
No full textKural, buluşun, tamamlandığı andan itibaren onu gerçekleştirene ait olması ise de, buluş işverenin emir ve talimatı doğrultusunda çalışan işçiler tarafından da gerçekleştirilebilmektedir. Yabancılık unsuru taşı-yan Fikri Mülkiyet Haklarına İlişkin Sözleşmelerde İşçi Buluşlarına Uy-gulanacak Hukuk, zayıf tarafın korunması ilkesi kapsamında tespiti ça-lışmamızın konusunu oluşturmaktadır. Yabancılık unsuru taşıyan söz-leşmeler, milletlerarası özel hukukun konusuna girmektedir. İşçinin veya işverenin yabancı devlet vatandaşı olması, işverenin işletme merkezinin yabancı bir devlette bulunması, işçinin iş görme edimini mutad olarak yabancı bir devlette ifa ediyor olması veya iş sözleşmesinin veya iş iliş-kisinin yabancı bir devlet ile sıkı irtibatlı olduğunun halin şartlarından anlaşılıyor olması durumlarından birinin varlığı halinde, yabancılık un-suru taşır. Yabancılık unsuru taşıyan iş sözleşmelerine uygulanacak hu-kuk, 5718 sayılı Milletlerarası Özel Hukuk ve Usul Hukuku Hakkında Kanun (MÖHUK) md. 28/3’te düzenlenmiştir
Fully charmed resonance X(6900) and its beauty counterpart
No full textThe fully heavy scalar tetraquarks T-4Q =QQQQ, (Q=c,b) are explored in the context of QCD sum rule method. We model T-4Q as diquark-antidiquark systems composed of pseudoscalar constituents, and calculate their masses m((')) and couplings f((')) within the two-point sum rule approach. Our results m=(6928 +/- 50)MeV and m '= (18858 +/- 50) MeV for masses of the tetraquarks T-4c and T-4b prove that they can decay to hidden-flavor heavy mesons. The full width Gamma(4c) of the T-4c is evaluated by taking into account the decay channels T-4c -> J/psi J/psi, J/psi psi ', eta(c)eta(c), eta(c)eta(c)(2S),eta X-c(c1)(1P), and Xc0Xc0. The partial widths of these processes depend on strong couplings g(i) at vertices T(4c)J/psi J/psi, T(4c)J/psi psi ' etc., which are computed using the QCD three-point sum rule method. The decay T-4b -> eta(b)eta(b )is used to find the width Gamma(4b) of the T-4b. The predictions for m and Gamma(4c)=(128 +/- 22)MeV are compared with parameters of the fully charmed resonances reported by the LHCb, ATLAS, and CMS Collaborations. Based on this analysis, we interpret the tetraquark T-4c as a candidate to the resonance X(6900). The mass m ' and width Gamma(4b)=(94 +/- 28)MeV of the exotic meson T-4b can be used in future experimental investigations of these states