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    Measurement of the primary Lund jet plane density in proton-proton collisions at √s=13 TeV

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    A measurement is presented of the primary Lund jet plane (LJP) density in inclusive jet production in proton-proton collisions. The analysis uses 138 fb−1 of data collected by the CMS experiment at s = 13 TeV. The LJP, a representation of the phase space of emissions inside jets, is constructed using iterative jet declustering. The transverse momentum kT and the splitting angle ∆R of an emission relative to its emitter are measured at each step of the jet declustering process. The average density of emissions as function of ln(kT/GeV) and ln(R/∆R) is measured for jets with distance parameters R = 0.4 or 0.8, transverse momentum pT> 700 GeV, and rapidity |y| < 1.7. The jet substructure is measured using the charged-particle tracks of the jet. The measured distributions, unfolded to the level of stable charged particles, are compared with theoretical predictions from simulations and with perturbative quantum chromodynamics calculations. Due to the ability of the LJP to factorize physical effects, these measurements can be used to improve different aspects of the physics modeling in event generators.SC (Armenia), BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC (China); MINCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); MoER, ERC PUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); SRNSF (Georgia); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MCIN/AEI and PCTI (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHESI and NSTDA (Thailand); TUBITAK and TENMAK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.). Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 724704, 752730, 758316, 765710, 824093, 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 Agentschap voor Innovatie door Wetenschap en Technologie (IWT-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), 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 124845, K 124850, K 128713, K 128786, K 129058, K 131991, K 133046, K 138136, K 143460, K 143477, 2020-2.2.1-ED-2021-00181, and TKP2021-NKTA-64 (Hungary); the Council of Science and Industrial Research, India; ICSC - National Research Center for High Performance Computing, Big Data and Quantum Computing, funded by the EU NexGeneration 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 B37G660013 (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, contract C-1845; and the Weston Havens Foundation (U.S.A.).Publisher versio

    Elektrikli araçların düşük ve orta frekanslarda hava kaynaklı kompresör gürültüsünü azaltmak için yeni bir metagözenekli yapı tasarımı geliştirilmesi.

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    Metamaterials have gained an increasing attention as a way of absorbing noise to achieve improved acoustic performance on vehicles, and thanks to their novel functionalities com pared to traditional designs, these structures are employed by many automotive companies as noise-reduction solutions for engineering applications. One of the key challenges for automotive original equipment manufacturers (OEMs) in the noise, vibration, and harsh ness (NVH) development process is absorption performance in the frequency range of 400 Hz to 800 Hz. Although sound engineers use porous polyurethane in these frequency ranges, the absorption performance of these designs is limited to meet increasing customer expectations. Besides, managing airborne noise in vehicles is particularly challenging in the low frequency spectrum. The main purpose of this study is to develop a metaporous sound barrier incorporating a Helmholtz resonator, effective in the low to mid-frequency range of the spectrum. For this purpose, a frequency domain simulation was carried out to obtain the absorption coefficient, analyze frequency-dependent effects, and identify critical frequencies in vehicle acoustics. Furthermore, local resonance effects to prevent acoustic waves were investigated and design parameters of metastructure were analyzed using a multiphysics-based simulation model. These results were validated experimen tally using an acoustic impedance tube. The methodology is demonstrated in a battery electric vehicle (BEV) to improve airborne compressor noise during motor idling. The optimum design parameters were determined using the Taguchi design method. Finally, the performance of developed metaporous material was validated through vehicle-level tests, with results showing an improvement of 3 dB(A).Metamalzemeler, arac¸larda gelis¸mis¸ akustik performansı elde etmek ic¸in gur¨ ult ¨ uy¨ u ab- ¨ sorbe etmenin yolundan biri olarak literaturde daha fazla kabul g ¨ or¨ uyor ve geleneksel ¨ tasarımlara gore yapıların yeni fonksiyonları ¨ on plana c¸ıkıyor. Birc¸ok otomotiv firması ¨ tarafından muhendislik uygulamalarında g ¨ ur¨ ult ¨ u azaltma c¸ ¨ oz¨ um¨ u olarak kullanılmaktadır. ¨ Gur¨ ult ¨ u, titres¸im ve sertlik (NVH) gelis¸tirme s ¨ urecinde otomotiv orjinal ekipman ¨ uretici- ¨ lerinin (OEM’ler) kars¸ılas¸tıgı temel zorluklardan biri 400 ile 800 Hz arasındaki g ˘ ur¨ ult ¨ uy¨ u¨ absorbe etme performansının zor olmasıdır. Ses muhendisleri bu frekans aralıklarında ¨ gozenekli poli ¨ uretan malzemeler kullansalar da bu tasarımların absorbe etme performansı ¨ artan mus¸teri beklentilerini kars¸ılamada yetersiz kalmaktadır. Ayrıca Helmholtz rezonat ¨ or- ¨ lerinin yaygın olarak kullanıldıgı d ˘ us¸¨ uk frekans spektrumunda arac¸larda hava kaynaklı ¨ gur¨ ult ¨ uy¨ u y ¨ onetmek ve engellemek oldukc¸a zordur. Bu c¸alıs¸manın esas amacı spektru- ¨ mun dus¸¨ uk-orta frekans aralı ¨ gında etkin olan Helmholtz rezonat ˘ or¨ un kullanıldı ¨ gı meta ˘ gozenekli kompozit bir ses bariyeri gelis¸tirmektir. Bu amac¸la akustik dalgaları ¨ onlemeye ¨ yonelik lokal rezonans etkileri aras¸tırılmıs¸ ve Multifizik tabanlı bir sim ¨ ulasyon modeli ¨ kullanılarak metayapının tasarım parametreleri olus¸turulmus¸tur. Metodoloji, elektrikli bir aracın (BEV) motor rolanti manevrası sırasında havadan yayılan kompres ¨ or g ¨ ur¨ ult ¨ us¨ un¨ un¨ analizi yoluyla gosterilmis¸tir. Gelis¸tirilen tasarımda optimum tasarım parametreleri Taguc- ¨ hi tasarım yontemi kullanılarak belirlenmis¸tir. Sonlu eleman modellerinin sonuc¸ları empe- ¨ dans tup¨ u¨ olc¸ ¨ umleriyle do ¨ grulanmıs¸tır. Son olarak, gelis¸tirilen meta g ˘ ozenekli malze- ¨ menin performansı arac¸ seviyesi testlerinde gerc¸ekles¸tirildi ve sonuc¸lar motor rolantide ¨ halindeyken yaklas¸ık 3 dB(A) iyiles¸me gostermis¸tir

    Search for high-mass exclusive diphoton production with tagged protons in proton-proton collisions at √s=13 TeV

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    A search is presented for high-mass exclusive diphoton production via photon-photon fusion in proton-proton collisions at (Formula presented) in events where both protons survive the interaction. The analysis utilizes data corresponding to an integrated luminosity of (Formula presented) collected in 2016-2018 with the central CMS detector and the CMS and TOTEM precision proton spectrometer (PPS). Events that have two photons with high transverse momenta ((Formula presented)), back-to-back in azimuth, and with a large diphoton invariant mass ((Formula presented)) are selected. To remove the dominant inclusive diphoton backgrounds, the kinematic properties of the protons detected in PPS are required to match those of the central diphoton system. Only events having opposite-side forward protons detected with a fractional momentum loss between 0.035 and 0.15 (0.18) for the detectors on the negative (positive) side of CMS are considered. One exclusive diphoton candidate is observed for an expected background of 1.1 events. Limits at 95% confidence level are derived for the four-photon anomalous coupling parameters (Formula presented) and (Formula presented), using an effective field theory. Additionally, upper limits are placed on the production of axionlike particles with coupling strength to photons (Formula presented) that varies from (Formula presented) to (Formula presented) over the mass range from 500 to 2000 GeV.SC (Armenia), BMBWF and Austrian Science Fund (FWF) [grant DOI: 10.55776/ P35891] (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC (China); MINCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); MoER, ERC PUT and ERDF (Estonia); Academy of Finland, Magnus Ehrnrooth Foundation, MEC, HIP, and Waldemar von Frenckell Foundation (Finland); CEA and CNRS/IN2P3 (France); SRNSF (Georgia); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MCIN/AEI and PCTI (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHESI and NSTDA (Thailand); TUBITAK and TENMAK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, Contracts No. 675440, No. 724704, No. 752730, No. 758316, No. 765710, No. 824093, and COST Action No. 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 Agentschap voor Innovatie door Wetenschap en Technologie (IWTBelgium); the F. R. S.-FNRS and FWO (Belgium) under the “Excellence of Science—EOS“—be.h ProjectNo. 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; Svenska Kulturfonden (Finland); the Shota Rustaveli National Science Foundation, Grant No. FR-22-985 (Georgia); the Deutsche Forschungsgemeinschaft (DFG), under Germany’s Excellence Strategy—EXC 2121 “Quantum Universe”—390833306, and under Project No. 400140256—GRK2497; the Hellenic Foundation for Research and Innovation (HFRI), Project No. 2288 (Greece); the Hungarian Academy of Sciences, the New National Excellence Program—ÚNKP, the NKFIH research Grants No. K 124845, No. K 124850, No. K 128713, No. K 128786, No. K 129058, No. K 131991, No. K 133046, No. K 138136, No. K 143460, No. K 143477, No. 2020-2.2.1-ED-2021-00181, and No. TKP2021-NKTA-64 (Hungary); the Council of Science and Industrial Research, India; ICSC—National Research Center for High Performance Computing, Big Data and Quantum Computing, funded by the EU NexGeneration program (Italy); the Latvian Council of Science; the Ministry of Education and Science, Project No. 2022/WK/14, and the National Science Center, Contracts No. Opus 2021/41/B/ST2/01369 and No. 2021/43/B/ST2/01552 (Poland); the Fundação para a Ciência e a Tecnologia, Grant No. 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 Investigación Científica y T´ecnica de Excelencia María de Maeztu, Grant No. 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 No. B05F650021 (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, Contract No. C-1845; and the Weston Havens Foundation (USA)

    A random walk based methodology to calculate the sensitivity coefficients in inverse radiant boundary design problems

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    Radiative heating furnaces are widely used for heat treatment applications in manufacturing industries. Strict requirements on heat treatment characteristics of the workpieces require precise control of furnace heater temperatures. Numerical techniques for the solution of inverse heat transfer problems can be used for the optimization of the radiant heater temperatures. In gradient -based optimization techniques, the optimization is carried out using the sensitivity coefficients between the heater and workpiece temperatures. In this study, we present a methodology for calculating the sensitivity coefficients for the solution of inverse boundary design problems involving transient heating of solid workpieces in a three-dimensional radiant furnace. In our methodology, the sensitivity coefficients on the selected design points within the workpieces are calculated by analytical differentiation of design point temperature formulations derived utilizing the floating random walk method and radiative heat flux formulation with exchange factors. The methodology for calculating sensitivity coefficients has been verified through applications to both a one-dimensional scenario and the three-dimensional radiant furnace model. The developed methodology was integrated into a gradient -based optimization algorithm in two test cases, to determine the furnace heater temperatures required to achieve the desired temperature histories at design points within the workpieces. First test case focuses reconstruction of an assumed heater temperature and examines the impact of design point configuration and input data noise on convergence behavior and calculated estimation. The findings reveal that increasing the number of design points in the workpieces increases solution accuracy, with transverse positioning of the design points in the workpieces resulting in heater temperatures closest to the assumed values. Second test case focused on estimating required heater temperatures for spatially uniform heating pattern on the workpieces. With 72 transversely positioned design points, we achieved uniform heating at these points with a maximum relative temperature deviation of 0.26%

    Path selection in parallel multihop uvlc systems over turbulence channels

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    This article explores an underwater communication system using visible light, featuring multiple parallel relay paths and several decode-and-forward relays per path. In traditional multihop systems, the failure of a single relay can result in the collapse of the entire system, rendering single-path multihop systems unreliable. Therefore, the adoption of parallel paths becomes important to enhance system robustness. In pursuit of reducing hardware complexity, the primary goal is to select one path from these parallel options. However, the challenge lies in choosing the best path, given various factors such as noise affecting channel coefficient estimation and the impact of erroneous feedback channels. In light of these challenges, our investigation delves into a comprehensive evaluation of the lthl\mathrm{{th}} best path selection in underwater environments. We consider both weak and moderate/strong turbulence conditions, with "weak" and "moderate/strong" turbulence conditions modeled by lognormal (LN) and gamma-gamma (GG) distributions, respectively. Closed-form expressions for the exact, approximate, and asymptotic probability of an outage are derived for both distributions when the lth best path is chosen for transmission. Additionally, we explore the incremental diversity order for LN turbulence channels and investigate the diversity order for GG turbulence channels. This comprehensive approach enables a more robust evaluation of the system's performance under various underwater conditions

    Innovative vibration control of triply periodic minimum surfaces lattice structures: A hybrid approach with constrained layer damping silicone-viscoelastic layer integration

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    This article introduces a novel method to enhance the damping performance of triply periodic minimal surface (TPMS) structures by integrating metamaterials with constrained layer damping (CLD) applications. This objective is accomplished by combining a viscoelastic silicone polymer layer with a primitive TPMS structure fabricated through laser powder bed fusion using aluminum alloy powder. Finite-element method (FEM) models using voxel elements, due to their high accuracy and computational efficiency, are developed to analyze the damping behavior of the TPMS-based CLD structure across various frequencies. Experimental modal test results validate the FEM model with high accuracy. Two distinct damping characterization methods, both time-domain and frequency-based, are employed to quantify the damping performance. The results reveal a fivefold improvement in damping performance in the time domain compared to the metal TPMS structure. In the frequency domain, the structure demonstrates 76% lower cumulative vibration compared to the metallic reference using the integral of frequency response method

    Macar Bilimler Akademisi’nde Safevi dönemine ait bir şiir mecmuası

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    This article is about a Safavid-period illustrated compilation in the Hungarian Academy of Sciences (Perzsa Qu. 02). It consists of three mathnawis: Wahshi Bafqi's Farhad and Shirin, Anisi Shamlu's Mahmud and Ayaz, and Zulali Khwansari's Mahmud and Ayaz. The article first briefly introduces the contents of the manuscript, and next discusses the mathnawis in connection with text-image relationships. These three mathnawis were composed in the late sixteenth and early seventeenth centuries. The fact that this illustrated manuscript was prepared not long after the composition of these three mathnawis suggests that they may have held special importance to the patron. Zulali's Mahmud and Ayaz is the mathnawi that includes the greatest number of paintings in this manuscript--nine out of a total of ten paintings--, with only one painting in Anisi's mathnawi of the same name. Vahshi's Farhad and Shirin does not include any paintings, at least presently. Because the manuscript is in disorder and is lacking several folios, it is likely that this mathnawi also included paintings at one point in the manuscript's life. The paintings in this manuscript show a close connection to the text, both to its lyrical and narrative content. Most of the paintings that belong to Zulali's mathnawi show scenes in a garden. The rate of illustration is very frequent in this case, with a painting almost on every other page from folio 30a through 40a. This quick rate of illustration adds a certain level of movement to the mathnawi, breaking the pace of reading, allowing the viewer to focus on the lyrical content of the poetry. While the garden scenes look quite similar to one another, there are certain slight differences, such as in the reversal of roles of the saqi from Ayaz to the sultan, that show a close connection to the text. In addition to these garden scenes that are typically found in illustrated texts of lyrical poetry, this manuscript also includes paintings that are specific to Zulali's text, such as one showing Ayaz in a bath, or the poet himself in seclusion as he receives inspiration to compose this poem. This inspiration is very much connected to a dream of the famed poet Nizami, who himself makes an appearance in this manuscript in yet another garden scene. While these garden scenes may have been dismissed as typical paintings that denote the lyrical content of the work, which they indeed do, they also show a close relationship to the text. A holistic look at the manuscript suggests that this manuscript is a sub-royal production, datable to the first half of the seventeenth century, more specifically to the reign of Shah 'Abbas I. The style of the paintings and illumination are similar to the Isfahan school of this period. Additionally, the suggestive "portrait" of Shah 'Abbas represented as Mahmud would point to the reign of this ruler as the approximate time of preparation of this manuscript.Publisher versio

    An equitable active power curtailment framework for overvoltage mitigation in pv-rich active distribution networks

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    There are various active power curtailment (APC) approaches to mitigate overvoltage. In PV-rich networks, the overvoltage happens to be especially at the end of the distribution feeders. While APC helps maintain voltage within operational limits, it results in varying degrees of renewable curtailment for each prosumer. This curtailment increases as the distance from the transformer grows. Hence, these approaches introduce unfairness among prosumers. This study proposes an equitable APC (EAPC) based on the prosumer's self-consumption rate (SCR). The method calculates each prosumer's SCR, compares it with the precalculated critical SCR, and calculates a fair share of curtailment for each prosumer. Subsequently, leveraging the voltage sensitivity matrix obtained from the inverse of the Jacobian matrix, the new active power injection at the point of common coupling (PCC) is calculated to mitigate the overvoltage. To show the effectiveness of the proposed method, a comparison with three other methods is presented under various PV penetration levels. The proposed EAPC is less sensitive to the prosumer's location and improves fairness among prosumers. In addition, a battery deployment scenario is analysed considering the annual supply and demand balance to suppress the extra curtailment introduced by EAPC without increasing the battery capacity

    Evaluating performance and energy efficiency of parallel programming models in heterogeneous computing systems

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    We provide a detailed evaluation of several parallel programming models, emphasizing both performance and energy efficiency in heterogeneous computing systems. The evaluation employs a diverse array of hardware, including Intel Xeon and AMD Epyc CPUs, along with NVIDIA GPUs featuring Pascal, Turing, and Ampere architectures, and an AMD GPU with Vega10 architecture. We utilize SYCL, OpenMP, CUDA, and HIP for implementing benchmarks in 11 varied application domains, offering a comprehensive perspective on the capabilities of these programming models in diverse computing environments.TÜBİTA

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