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Öğe Terahertz-Band Integrated Sensing and Communications: Challenges and Opportunities(Institute of Electrical and Electronics Engineers Inc., 2024) Elbir, Ahmet Mete; Mishra, Kumar Vijay; Chatzinotas, Symeon; Bennis, MehdiThe sixth generation (6G) wireless networks aim to achieve ultra-high data transmission rates, very low latency, and enhanced energy-efficiency. To this end, terahertz (THz) band is one of the key enablers of 6G to meet such requirements. The THz-band systems are also quickly emerging as high-resolution sensing devices because of their ultra-wide bandwidth and very narrow beamwidth. As a means to efficiently utilize spectrum and thereby save cost and power, THz integrated sensing and communications (ISAC) paradigm envisages a single integrated hardware platform with a common signaling mechanism. However, ISAC at THz-band entails several design challenges, such as beam split, range-dependent bandwidth, near-field beamforming, and distinct channel model. This article examines the technologies that have the potential to bring forth ISAC and THz transmission together. In particular, it provides an overview of antenna and array design, hybrid beamforming, integration with reflecting surfaces, and data-driven techniques, such as machine learning. These systems also provide research opportunities in developing novel methodologies for channel estimation, near-field beam split, waveform design, and beam misalignment. © 1986-2012 IEEE.Öğe Managing the Energy flow of a Self-Sustaining Multisource System through intelligent Management Techniques utilizing Artificial Intelligence(Institute of Electrical and Electronics Engineers Inc., 2024) Serir, Chafiaa; Rekioua, Djamila; Bensmail, Samia; Belkaid, Abdelhakim; Çolak, İlhami; Belhoul, Talit; Mokrani, ZahraThis paper proposes an efficient strategy for energy control in the isolated micro grid, comprising photovoltaic and wind power systems with battery storage systems. This strategy presents smart energy management (SEM) based on artificial intelligence techniques (AIT) such as the fuzzy logic controller (FLC). The SEM is designed to manage energy flows throughout the isolated micro grid, by extracting the maximum available energy during deviating constraints such as temperature, solar irradiance and wind speed, while maintaining energy quality and autonomy to meet charging requirements and ensure precise control of the battery's state of charge (SOC) over five states (Very High: SOCV.H, High: SOCH, Medium: SOCM, Low SOCL and Very Low SOCV.L) during charge and discharge. This is a significant improvement over traditional management systems that rely on two SOC states, namely SOCmin and SOCmax. Response behaviors are described and visualized in MATLAB Simulink. © 2024 IEEE.Öğe Search for the leptonic decays D∗+ →e+νe and D∗+ →μ+νμ(American physical society, 2024) Ablikim, M.; Achasov, M.N.; Adlarson, P.; Çetin, Serkant Ali; Kolcu, Onur BuğraWe present the first search for the leptonic decays D∗+→e+νe and D∗+→μ+νμ by analyzing a data sample of electron-positron collisions recorded with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, corresponding to an integrated luminosity of 6.32 fb-1. No significant signal is observed. The upper limits on the branching fractions for D∗+→e+νe and D∗+→μ+νμ are set to be 1.1×10-5 and 4.3×10-6 at 90% confidence level, respectively. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.Öğe Search for pair-production of vector-like quarks in lepton+jets final states containing at least one b-tagged jet using the Run 2 data from the ATLAS experiment(Elsevier, 2024) Aad, G.; Abbott, B.; Beddall, Andrew John; Çetin, Serkant Ali; Öztürk, Sertaç; Şimşek, Sinem; Uysal, ZekeriyaA search is presented for the pair-production of heavy vector-like quarks in the lepton+jets final state using 140 fb−1 of proton–proton collisions at s=13 TeV collected with the ATLAS detector. The search is optimised for vector-like top-quarks (T) that decay into a W boson and a b-quark, with one W boson decaying leptonically and the other hadronically. Other vector-like quark flavours and decay modes are also considered. Events are selected with one high transverse-momentum electron or muon, large missing transverse momentum, a large-radius jet identified as a W boson, and multiple small-radius jets, at least one of which is b-tagged. Vector-like T-quarks with 100% branching ratio to Wb are excluded at 95% CL for masses below 1700 GeV. These limits are also applied to vector-like Y-quarks, which decay exclusively into a W boson and a b-quark. Isospin singlets with B(T→Wb:Ht:Zt)=1/2:1/4:1/4 are excluded for masses below 1360 GeV.Öğe Search for low-mass resonances decaying into two jets and produced in association with a photon or a jet at Formula Presented with the ATLAS detector(American physical society, 2024) Aad, G.; Abbott, B.; Beddall, Andrew John; Çetin, Serkant Ali; Öztürk, Sertaç; Şimşek, Sinem; Uysal, ZekeriyaA search is performed for localized excesses in the low-mass dijet invariant mass distribution, targeting a hypothetical new particle decaying into two jets and produced in association with either a high transverse momentum photon or a jet. The search uses the full Run 2 data sample from LHC proton-proton collisions collected by the ATLAS experiment at a center-of-mass energy of 13 TeV during 2015-2018. Two variants of the search are presented for each type of initial-state radiation: one that makes no jet flavor requirements and one that requires both of the jets to have been identified as containing Formula Presented-hadrons. No excess is observed relative to the Standard Model prediction, and the data are used to set upper limits on the production cross section for a benchmark Formula Presented model and, separately, for generic, beyond the Standard Model scenarios which might produce a Gaussian-shaped contribution to dijet invariant mass distributions. The results extend the current constraints on dijet resonances to the mass range between 200 and 650 GeV.Öğe Letter to the Editor in Response to: Short- and Long-Term Outcomes of Thoracoscopic and Open Repair for Esophageal Atresia and Tracheoesophageal Fistula(W.B. Saunders, 2025) Azizoğlu, Mustafa; Klyuev, Sergey; Yüksel, Seçil; Erdem Şit, Tuba; Karakaş, EsraLetter to the Editor in Response to: Short- and Long-Term Outcomes of Thoracoscopic and Open Repair for Esophageal Atresia and Tracheoesophageal FistulaÖğe Left Atrial Coupling Index Predicts Heart Failure in Patients with End Stage Renal Disease(Multidisciplinary Digital Publishing Institute (MDPI), 2024) Avcı Demir, Fulya; Bingöl, Gülsüm; Uçar, Mustafa; Özden, Özge; Özmen, Emre; Tüner, Haşim; Nasifov, Muharrem; Ünlü, SerkanBackground and Objectives: We aimed to ascertain the predictive power of the left atrial coupling index (LACI) in patients with end stage renal disease (ESRD) for heart failure with preserved ejection fraction (HFpEF). Materials and Methods: This is a retrospective study including 100 subjects between 18 and 65 years of age with ESRD and not on dialysis treatment. Patients were divided into groups with and without HFpEF. The LACI was defined as the ratio of the left atrial volume index (LAVI) to the a′ wave in tissue Doppler imaging (TDI). Statistical analyses were performed, including univariate and multivariate regression analyses. Results: The mean age of the participants was 47 ± 13.3 years. Individuals with HFpEF exhibited a higher LACI. Univariate and multivariate regression analyses demonstrated that the predictive capacity of the LACI for HFpEF was considerably higher than that of the LAVI and other echocardiographic parameters. Conclusions: Higher LACI levels were consistently related to the presence of HFpEF in ESRD patients. The LACI can be easily obtained in daily practice using conventional Doppler echocardiographic measurements during left atrial functional assessments. © 2024 by the authors.Öğe Lagrangian relaxation method for solving a new time-dependent production - distribution planning model(Pergamon-elsevier science, 2024) Rezaali, Zahra; Ghodratnama, Ali; Amiri-Aref, Mehdi; Tavakkoli-Moghaddam, Reza; Wassan, NiazIn today 's competitive business environment, organizations must decide how to handle the processing of their logistics equipment economically. One of the vital logistical concerns is distribution planning that is especially crucial depending on the facilities and goods being used. When it comes to perishable goods, this problem assumes double the significance. The position of the warehouse and the route of the vehicles make up the distribution planning problem. These two problems are considered concurrently and solved in the location-routing mathematical model. This paper aims to provide a production and distribution strategy to serve clients and consumers better. This research attempts to produce as efficiently as possible while providing prompt customer service, which is crucial in today 's corporate environment. This study uses three-level supply chains for perishable goods to create a supply chain network that minimizes costs. In this case, time-dependent demands refer to requests that may be made when the vehicle will arrive. Places and routes in this area are designed to meet all needs. In general, it is desirable to have factories and distribution centers in known locations, know the service 's opening and closing hours, and know how to manage the flow of materials and goods as they are stored in distribution centers and for retailers (clients). Additionally, it is desirable to route vehicle that connects the various levels of the supply chain and ensures that vehicles travel on schedule overall. First, the supply chain model represented as non-linear programming is transformed into linear programming to solve it using the CPLEX solver of GAMS commercial software and the Lagrangian relaxation (LR) method. Then, this model is verified using numerical examples and related parameters to see how it impacts the variables and the objective function 's result. The results show the capability of the LR method.Öğe Investigation of preconditioning and the protective effects of nicotinamide against cerebral ischemia-reperfusion injury in rats(Elsevier Ireland Ltd, 2024) Arslan, Ruhat; Doğanay, Songül; Budak, ÖzcanThis study investigated the antioxidant and neuroprotective effects of nicotinamide combined with ischemic preconditioning against cerebral ischemia reperfusion (CIR) injury. Thirty-five Wistar albino male rats were randomly divided into five groups: sham, preconditioned ischemia/reperfusion (IP+IR), ischemia/reperfusion (IR), preconditioned ischemia/reperfusion + nicotinamide (IP+IR+N), and ischemia/reperfusion + nicotinamide (IR+N). CIR was achieved with bilateral common carotid artery occlusion. IP+IR and IP+IR+N groups 30 min before ischemia; Three cycles of 10 sec ischemia/30 sec reperfusion followed by 20 min IR were applied. The IP+IR+N and IR+N groups received 500 mg/kg nicotinamide intraperitoneally. After 24 h of reperfusion, a neurological evaluation was performed and vertıcal pole test. Biochemically, malondialdehyde (MDA), glutathione (GSH) levels and catalase (CAT) activity were measured in blood and brain tissue samples. Rates of red neurons, sateliosis and spongiosis were determined histopathologically in the prefrontal cortex areas. After CIR, MDA levels increased significantly in serum and brain tissue in the IR group compared to the sham group, while GSH and CAT activity decreased in the brain tissue (p < 0.05). MDA levels in the tissues were found significantly decreased in the IR+N group compared to the IR group (p < 0.05). Administration of nicotinamide together with IP significantly decreased MDA levels in brain tissue and increased GSH and CAT activity (p < 0.05). Compared to the IR group, the morphological and neurological damage in the prefrontal cortex areas decreased in the IP+IR, IP+IR+N, and IR+N groups (p < 0.05). In addition, red neuron, sateliosis and spongiosis rates increased significantly in the IR group compared to the Sham, IP+IR+N, IR+N groups (p < 0.001 for all). In neurological evaluation, while the neurological score increased and the time on the vertical pole decreased significantly in the IR group, preconditioning, and nicotinamide groups reversed (p < 0.05). The study's results show that nicotinamide administration with ischemic preconditioning alleviates cerebral ischemia/reperfusion injury. © 2024 Elsevier B.V.Öğe Measurement of 𝑡-channel single-top-quark production in 𝑝𝑝 collisions at √𝑠 = 5.02 TeV with the ATLAS detector(Elsevier B.V., 2024) Aad, G; Abbott, B; Abeling, K.; Beddall, Andrew John; Çetin, Serkant Ali; Öztürk, Sertaç; Şimşek, SinemThe observation of the electroweak production of single-top-quarks is made using 255 pb−1 of proton-proton collision data recorded at s=5.02 TeV with the ATLAS detector at the Large Hadron Collider. An event selection is used to identify single-top-quark candidates arising from t-channel production with the top quark decaying semi-leptonically. Events passing the selection are then used to measure the inclusive cross-section for the combined production of single-top-quarks and antiquarks, σ(tq+t¯q), and the ratio Rt between these two. They are measured to be σ(tq+t¯q)=27.1−4.1 +4.4(stat.)−3.7 +4.4(syst.) pb and Rt=2.73−0.82 +1.43(stat.)−0.29 +1.01(syst.). The individual single-top-quark (tq) and single-top-antiquark (t¯q) production cross-sections are measured to be σ(tq)=19.8−3.1 +3.9(stat.)−2.2 +2.9(syst.) pb and σ(t¯q)=7.3−2.1 +3.2(stat.)−1.5 +2.8(syst.) pb. All measurements are in good agreement with the Standard Model predictions. © 2024 The Author(s)Öğe Measurement of the Born cross section for e+e- →ηhc at center-of-mass energies between 4.1 and 4.6 GeV(American Physical Society, 2025) Ablikim, M.; Achasov, M.N.; Adlarson, P.; Çetin, Serkant Ali; Kolcu, Onur Buğra; Uman, IgorWe measure the Born cross section for the reaction e+e-→ηhc from s=4.129 to 4.600 GeV using datasets collected by the BESIII detector running at the BEPCII collider. A resonant structure in the cross-section line shape near 4.200 GeV is observed with a statistical significance of 7σ. The parameters of this resonance are measured to be M=4188.8±4.7±8.0 MeV/c2 and Γ=49±16±19 MeV, where the first uncertainties are statistical and the second systematic. © 2025 authors. Published by the American Physical Society.Öğe Measurement of Born cross section of e+e−→Σ+Σ¯− at center-of-mass energies between 3.510 and 4.951 GeV(Springer Science and Business Media Deutschland GmbH, 2024) Ablikim, Medina N.; Achasov, M. N.; Çetin, Serkant AliUsing 24.1 fb−1 of e+e− collision data collected with the BESIII detector at the BEPCII collider, the Born cross sections and effective form factors of the e+e−→Σ+Σ¯− reaction are measured. The measurements are performed at center-of-mass energies ranging from 3.510 to 4.951 GeV. No significant evidence for the decay of the charmonium(-like) states, ψ(3770), ψ(4040), ψ(4160), Y(4230), Y(4360), ψ(4415), and Y(4660), into a Σ+Σ¯− final state is observed. Consequently, upper limits for the products of the branching fractions and the electronic partial widths at the 90% confidence level are reported for these decays. © The Author(s) 2024Öğe Matrix-based network data envelopment analysis: A common set of weights approach(Elsevier Ltd, 2024) Peykani, Pejman; Seyed Esmaeili, Fatemeh Sadat; Pishvaee, Mir Saman; Rostamy Malkhalifeh, Mohsen; Hosseinzadeh Lotfi, FarhadPerformance measurement of decision-making units (DMUs) with network structure is one of the main challenges in data envelopment analysis (DEA) field. The main purpose of this paper is to propose a novel network data envelopment analysis (NDEA) approach based on matrix of efficiency, common set of weights (CSW), multi-objective programming (MOP), and goal programming (GP) technique for performance measurement of peer DMUs in two-stage network structure. The advantages of the proposed NDEA approach can be summarized as follows: comparing all DMUs and sub-DMUs on the same base, considering all internal structures and relations and capability to extending this for all network structures, linearity of the proposed models, unique efficiency decomposing without any need to consider multiplicative, additive or leader-follower relations between overall and stages efficiency. To illustrate the usefulness and applicability of the proposed approach we applied it to a real application of non-life insurance companies in Taiwan. © 2024 Elsevier LtdÖğe Decisioning-based approach for optimising control engineering tools using digital twin capabilities and other cyber-physical metaverse manufacturing system components(IEEE, 2024) Mourad, Nahia; Alsattar, Hassan A.; Qahtan, Sarah; Zaidan, Aws Alaa; Deveci, Muhammet; Sangaiah, Arun Kumar; Pedrycz, WitoldThe optimisation of control engineering tools based on digital twin capabilities and other cyber-physical metaverse manufacturing system (CPMMS) components are crucial for the successful performance. This study proposes a model for optimising control engineering tools using digital twin capabilities and other CPMMS components to solve the open issues. The main contributions and novelty aspects of the methodological process are outlined as follows: Formulated and developed is a decision matrix based on a utility procedure for 10 control engineering tools with digital twin capabilities and other three CPMMS components (Programmable-Logic-Controller and Human-Machine-Interface, Internet of Things connectivity and cybersecurity features). This matrix accounts for the uncertainty associated with tool assessment and transformation evaluation issue; formulated and develop an integrating fuzzy weighted with zero-inconsistency-interval-valued spherical fuzzy rough sets (IvSFRS-FWZIC) and combined compromise solution (CoCoSo) methods. The IvSFRS-FWZIC method is utilised to assign importance degrees to the digital twin capabilities and other CPMMS components. The applicability and robustness of the proposed approach are validated and evaluated through conducting sensitivity, correlation, and comparative analyses. The proposed approach can assist managers in analysing and selecting the most suitable tool for developing CPMMS.Öğe Search for J/ψ weak decays containing a D meson(American physical society, 2024) Ablikim, M.; Achasov, M.N.; Adlarson, P.; Çetin, Serkant Ali; Kolcu, Onur BuğraUsing a sample of about 10 billion J/psi events with the BESIII detector, we search for the weak decays of J/psi -> (D) over bar (0)pi(0) + c.c., J/psi -> (D) over bar (0)eta + c.c., J/psi -> (D) over bar (0)rho(0) + c.c., J/psi -> D-pi(+) + c.c., and J/psi -> (D) over bar (-)rho(+) + c.c., Since no significant signal is observed, we set the upper limits of the branching fractions of these decays to be B(J/psi -> (D) over bar (0)pi(0) + c.c.) < 4.7 x 10(-7), B(J/psi -> <(D)over bar>(0)eta + c.c.) < 6.8 x 10(-7), B(J/psi -> <(D)over bar>(0)rho(0) + c.c.) < 5.2x10(-7), B(J/psi -> <(D)over bar>(-)pi(+) c.c.) < 7.0 x 10(-8), and B(J/psi -> <(D)over bar>(-)rho(+) + c.c.) < 6.0 x 10(-7) at the 90% confidence level.Öğe Evaluating the Effect of Applying Cathodal tDCS to the Left Dorsolateral Prefrontal Cortex on Visual Working Memory(Istanbul University Press, 2024) Öksüz, Yunus Emre; Eskikurt, GökçerObjective: Contemporary research has studied non-invasive brain stimulation modalities regarding their impact on various cognitive functions, particularly in the areas of learning and memory. Studies are being pursued to delve into the manipulation of these cognitive facets through this methodology. The aim of the current study was to examine the effects of application of cathodal transcranial direct current stimulation (tDCS) to the left dorsolateral prefrontal cortex (DLPFC), on visual working memory. Materials and Methods: The study consisted of two separate groups, an active and a sham group, in which a total of 42 university students participated. Two mA cathodal direct current was applied to the left dorsolateral prefrontal cortex. To measure visual working memory, the study applied a visual 1-back task consisting of Chinese letters before and after tDCS and compared the obtained data. Results: The study observed significant differences between the active and sham groups, with the active group having an increased number of omissions, a decreased number of correct responses, and prolonged response times. Conclusion: The findings of the study revealed the suppressive effect of cathodal tDCS on visual working memory. Studies in the literature revealed various results regarding the contributions of left and right DLPFC on working memory. The findings of this study showed that right DLPFC also has an effect on visual working memory. © 2024, Istanbul University Press. All rights reserved.Öğe Incorporation of prospect theory into double-frontier cross-efficiency: a case study of Iranian airline(Taylor and Francis Ltd., 2025) Ganji, Seyedreza Seyedalizadeh; Tirkolaee, Erfan Babaee; Jamshidi Bandari, Samaneh; Fathi Ajirlu, ShahruzCEM is a widely recognised approach that utilises DEA to assess the efficiency of DMUs, providing policymakers with a valuable tool. However, there are certain limitations associated with conventional CEM. First, it fails to consider DMs’ subjective preferences, thereby disregarding the significance of cross-evaluations. Secondly, traditional CEM overlooks the significance of a pessimistic standpoint in making decisions. To overcome these drawbacks, the current study aims to incorporate the prospect theory into the double-frontier CEM. This theory allows for the incorporation of DMs’ preferences regarding gains and losses in cross-evaluation aggregation. The paper utilises a novel cross-evaluation aggregation approach (referred to as APC) to address DMs’ subjectivity. As a real case study, the performance of 17 Iranian airlines is examined using the novel Double-Frontier CEM based on APC, referred to as DAPC. This study evaluates Iranian airlines according to three inputs and four outputs. The results of the study revealed that DMs’ preferences had a significant impact on both viewpoints. Interestingly, the ranking outcomes for more than half of the airlines differed significantly when considering the two viewpoints. © 2025 Informa UK Limited, trading as Taylor & Francis Group.Öğe Letter to the editor: considering poststroke fatigue(Lippincott williams & wilkins, 2024) Küçükakgün, Hilalnur; Tulek, Zeliha; Kılıçaslan, Kimya; Uncu, Jbid Dursun; Bayrak, Ceren; Soltanalizadeh, Roya; Krespi, YakupLetter to the editor: considering poststroke fatigueÖğe Management of Compromised Spacing in the Esthetic Zone by Combining an Ultra-Thin Partial Ceramic Veneer and a Ceramic Implant Crown: A Case Report of a Multidisciplinary Approach and Technique Description(Quintessence Publishing Co. Inc., 2024) Fonseca, Manrique; Molinero-Mourelle, Pedro; Dönmez, Mustafa Borga; Abou-Ayash, Samir; Buser, Daniel; Sculean, Anton; Yılmaz, BurakDental implants are commonly used to replace missing single teeth. However, esthetic rehabilitation of an adjacent tooth may also be required due to diastemas, crowding, or existing large direct restorations to improve the final esthetic outcome. With the advancements in ceramics and bonding techniques, minimally invasive esthetic approaches have become viable for compromised spacing issues. This case report describes a dental technique for the esthetic rehabilitation of compromised anterior spacing with a customized zirconia implant abutment at a maxillary central incisor site and a partial ceramic veneer bonded to the adjacent central incisor. © 2024 by Quintessence Publishing Co Inc.Öğe From Fuzzy Rule-Based Models to Granular Models(Institute of Electrical and Electronics Engineers Inc., 2025) Cui, Ye; Hanyu, E.; Pedrycz, Witold; Li, ZhiwuFuzzy rule-based models constructed in the presence of numeric data are nonlinear numeric models producing for any input some numeric output. There are no ideal models so the obtained numeric output could create a false illusion of achieved accuracy. A desirable approach is to augment the results with some measure of confidence (credibility) by admitting a granular rather than numeric format of the produced output values of the model. Our focus of this study is on fuzzy Takagi–Sugeno rule-based models whose conclusions are constant. The ultimate objective is to extend such models to the generalized granular structure with the conclusions formed as information granules. We study information granules described by intervals and fuzzy sets as well as probabilistic Gaussian information granules. The original design of the granular model is realized by involving the principle of justifiable granularity. Using this principle, we also show how to determine the equivalence between information granules. The construction of probabilistic information granules of the model is completed with the aid of optimized Gaussian process models. The granular models built in this way constitute a substantial and application-oriented departure from the numeric fuzzy models by offering a comprehensive insight into the quality of the produced results. The experimental studies based on synthetic and publicly available data demonstrate the design process and discuss the quality of the obtained results. © 2024 IEEE.
