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1. Slow and fast relaxation times of quantum lattice model with local multi-well potentials: phenomenological dynamics for Sn$_{2}$P$_{2}$S$_{6}$ ferroelectric crystals

Author

Erdem, R., Özüm, S., and Güçlü, N.

Subjects
Condensed Matter - Statistical Mechanics
Abstract

As a continuation of the previously published work [Velychko O. V., Stasyuk I. V., Phase Transitions, 2019, 92, 420], a phenomenological framework for the relaxation dynamics of quantum lattice model with multi-well potentials is given in the case of deformed Sn$_{2}$P$_{2}$S$_{6}$ ferroelectric lattice. The framework is based on the combination of statistical equilibrium theory and irreversible thermodynamics. In order to study these dynamics in a connected way we assume that the dipole ordering or polarization ($\eta$) and volume deformation ($u$) can be treated as fluxes and forces in the sense of Onsager theory. From the linear relations between the forces and fluxes, the rate equations are derived and characterized by two relaxation times ($\tau_{S}, \tau_{F}$) which describe the irreversible process near the equilibrium states. The behaviors of $\tau_{S}$ and $\tau_{F}$ in the vicinity of ferroelectric phase transitions are studied., Comment: 8 pages, 4 figures

Published
2023
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2. EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade

Author

Batista, R. Alves, Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, G., Blasi, P., Böhmer, C. G., Bošnjak, Ž., Bringmann, T., Burrage, C., Bustamante, M., Bustillo, J. Calderón, Byrnes, C. T., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., de Rham, C., di Matteo, A., Domènech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, F., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Said, J. Levi, Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J. E., Martinelli, M., Martins, C. J. A. P., Matthews, J. H., Meli, A., Mena, O., Mifsud, J., Bertolami, M. M. Miller, Millington, P., Moesta, P., Nippel, K., Niro, V., O'Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Khalifeh, A. Rida, Riotto, A., Roiban, R., Rubio, J., Sahlén, M., Sabti, N., Sagunski, L., Šarčević, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., van Vliet, A., Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., and Zeng, M.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Astroparticle physics is undergoing a profound transformation, due to a series of extraordinary new results, such as the discovery of high-energy cosmic neutrinos with IceCube, the direct detection of gravitational waves with LIGO and Virgo, and many others. This white paper is the result of a collaborative effort that involved hundreds of theoretical astroparticle physicists and cosmologists, under the coordination of the European Consortium for Astroparticle Theory (EuCAPT). Addressed to the whole astroparticle physics community, it explores upcoming theoretical opportunities and challenges for our field of research, with particular emphasis on the possible synergies among different subfields, and the prospects for solving the most fundamental open questions with multi-messenger observations., Comment: White paper of the European Consortium for Astroparticle Theory (EuCAPT). 135 authors, 400 endorsers, 133 pages, 1382 references

Published
2021

7. Proceedings to the 13th Workshop 'What Comes Beyond the Standard Models', Bled, July 12. - 22., 2010, Slovenia

Author

Khan, A. Ali, Bregar, G., Dvoeglazov, V. V., Ellis, J., Erdem, R., Hernandez-Galeana, A., Khlopov, M. Yu., Lang, R. F., Lukman, D., Borstnik, N. S. Mankoc, Markum, H., Mayorov, A. G., Mirman, R., Moultaka, G., Nagao, K., Nielsen, H. B., Ninomiya, M., Rosina, M., and Soldatov, E. Yu.

Subjects
High Energy Physics - Phenomenology
Abstract

1. Noncommutativity and Topology within Lattice Field Theories 2. The Construction of Quantum Field Operators 3. The Bargmann-Wigner Formalism for Spin 2 Fields 4. New Light on Dark Matter from the LHC 5. Extra Dimensional Metric Reversal Symmetry and its Prospect... 6. Masses and Mixing Matrices of Families within SU(3) Flavor Symmetry ... 7. Dark Atoms of the Universe: OHe Nuclear Physics, 8. Can the Matter-Antimatter Asymmetry be Easier to Understand Within the "Spin-charge-family-theory", .. 9. Mass Matrices of Twice Four Families of Quarks and Leptons, ...in the "Spin-charge-family-theory" 10. Bohmian Quantum Mechanics or What Comes Before the Standard Model 11. Backward Causation in Complex Action Model ... 12. Is the Prediction of the "Spin-charge-family-theory" in Disagreement with the XENON100..? 13. Masses and Mixing Matrices of Families of Quarks and Leptons Within the "Spin-charge-family-theory" 14. Can the Stable Fifth Family of the "Spin-charge-family-theory" ...Form the Fifth Antibaryon Clusters with Ordinary He Nucleus? 15. Puzzles of Dark Matter - More Light on Dark Atoms? 16. Families of Spinors in d = (1 + 5)...and Masslessness 17. Are Superheavy Quark Clusters Candidates for the Dark Matter? 18. Complex Action Functioning as Cutoff and De Broglie-Bohm Particle 19. Where does the Science Go? 20. VIA Presentation, Comment: Contains articles by different authors presented at the 13th Workshop 'What Comes Beyond the Standard Models', 12. - 22. July 2010, Bled, Slovenia. Editors were N.S. Mankoc Borstnik, H.B. Nielsen, D. Lukman, x + 233 pp

Published
2010

11. Proceedings to the workshops 'What comes beyond the Standard model', 2000, 2001, 2002, Volume 2: Proceedings (Part II)

Author

Borstnik, N. Mankoc, Nielsen, H. Bech, Froggatt, C. D., Lukman, D., Nevzorov, R. B., Ter-Martirosyan, K. A., Trusov, M. A., Laperashvili, L. V., Ryzhikh, D. A., Takanishi, Y., and Erdem, R.

Subjects
High Energy Physics - Phenomenology
Abstract

Contents (Part 2): 8.Renormalization of Coupling Constants in the Minimal SUSY Models (R. B. Nevzorov, K. A. Ter-Martirosyan and M. A. Trusov) 9.Multiple Point Model and Phase Transition Couplings ...(L.V. Laperashvili, D.A. Ryzhikh and H.B. Nielsen) 10.Family Replicated Fit of All Quark and Lepton Masses and Mixings (H. B. Nielsen and Y. Takanishi) 11.Family Replicated Calculation of Baryogenesis (H. B. Nielsen and Y. Takanishi) 12. Neutrino Oscillations in Vacuum on the Large Distance (D.A. Ryzhikh and K.A. Ter-Martirosyan) 13. Possibility of an Additional Source of Time Reversal Violation for Neutrinos (R. Erdem) 14.Quark-Lepton Masses and the Neutrino Puzzle in the AGUT Model (C.D. Froggatt) 15.Neutrinos in the Family Replicated Gauge Group Model (C.D. Froggatt) (Contents of Part 1 [hep-ph/0301029]: 1.Derivation of Lorentz Invariance and Three Space Dimensions in Generic Field Theory (C D. Froggatt and H. B. Nielsen) 2.Unitary Representations, Noncompact Groups SO(q; d - q)...(N. Mankoc Borstnik, H. B. Nielsen and D. Lukman) 3.Weyl Spinor of SO(1; 13), Families of Spinors ...(A. Borstnik Bracic and N. Mankoc Borstnik) 4.A Tight Packing Problem (A. Kleppe) 5.Why so Few Particle Species? ... (D.L. Bennett and A. Kleppe) 6.About Number of Families (D. Lukman, A. Kleppe and N.S. Mankoc Borstnik) 7.Coupling Constant Unification in Spin-Charge Unifying Model ....(N. Mankoc Borstnik and H. B. Nielsen)), Comment: Part II contains 8 articles by different authors inspired by the discussions at the Bled workshops (remaining 7 articles are included in Part I, which is available as hep-ph/0301029). The published Proceedings contains both parts. Editors were N. Mankoc Borstnik, H. Bech Nielsen, C.D. Froggatt, D. Lukman

Published
2003

13. Determination of the Optimum Speed Mode of the Carding Machine.

Author

Tojimirzaev, S. T., Murzabayeva, G. K., Yeshzhanov, A. A., Erdem, R., Yeziyeva, M., Batyrkulova, A., and Togataev, T.

Subjects
LABORATORY equipment & supplies, FIBERS, SPEED, YARN, MACHINERY
Abstract

In rotor spinning line, which is one of the new generation spinning systems, improving the operating parameters of the carding machine is of great importance in preparing the fibers effectively to be fed into the spinning system. In this case, issues such as separating the fibrous mass into individual fibers, making the fibers parallel to each other, separating hard and foreign substances from the fibers, and removing short fibers from the system influence the efficiency of carding. In this study, the effect of different speed modes of the taker-in, main drum and flats in the carding machine on the quality of fiber and card sliver was investigated. The obtained card sliver samples with a linear density of 5.9 ktex were tested by USTER TESTER-5, USTER AFIS PRO-2 and HVI laboratory equipment. According to the research results, in order to produce high-quality yarn, it is recommended to adjust the speed of the carding machine as follows: taker-in speed - 1260 mm/min, main drum speed - 520 mm/min and flat speed - 320 mm/min. [ABSTRACT FROM AUTHOR]

Published
2024
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14. MACHINE LEARNING BASED PREDICTION OF COMPRESSIVE STRENGTH IN CONCRETE INCORPORATING SYNHTHETIC FIBERS.

Author

ERDEM, R. TUĞRUL, ÇİFTÇİOĞLU, AYBİKE ÖZYÜKSEL, GÜCÜYEN, ENGİN, and KANTAR, ERKAN

Subjects
COMPRESSIVE strength, STRUCTURAL engineering, RANDOM forest algorithms, DECISION trees, STRUCTURAL engineers, SYNTHETIC fibers
Abstract

Different types of fibers are added to the concrete mixture to improve its behavior under different loading cases. This study intends to investigate the compressive strength of concrete cubic samples in which synthetic macro fibers are added in different amounts. For this purpose, a total of 72 cubic samples are produced in the experimental program. Axial pressure test is applied to cubic samples and 7 and 28 days compressive strength values are obtained in the end. However, a lot of effort has been spent to complete the time-consuming laboratory tests. To overcome this situation, four machine learning methods--Xgboost, Random Forest, Decision Tree, and Multiple Linear Regression--are adapted for efficient compressive strength forecasting. Moreover, four metrics are employed for a more meaningful evaluation of models: R2, RMSE, MAE, and MAPE. Remarkably, all models achieved R2 values exceeding 90%, with Xgboost notably reaching an impressive R2 value of 97%. This highlights the effectiveness of integrating machine learning in predicting compressive strength, offering a viable alternative to traditional laboratory tests. Incorporating the Shapley Additive exPlanation (SHAP) method, the study provides a detailed analysis of the models' interpretability. SHAP analysis revealed that "Day" and "Fiber" have been identified as crucial features influencing compressive strength predictions. Localized SHAP analyses for specific samples further enhanced the understanding of individual predictions, emphasizing the practicality and transparency of machine learning in structural engineering. The promising results of this study indicate the potential for further advancements in enhancing performance, utilizing machine learning insights. [ABSTRACT FROM AUTHOR]

Published
2024

17. Ponašanje betonskih ploča od cementnog morta pri udarnom opterećenju

Author

Erdem, R. Tuğrul, Berberoğlu, Murat, Gücüyen, Engin, Erdem, R. Tuğrul, Berberoğlu, Murat, and Gücüyen, Engin

Abstract

Na konstrukcije tijekom njihove uporabe mogu djelovati razna udarna opterećenja pa se stoga provode različite metode ispitivanja materijala i konstrukcija udarnim opterećenjem. U ovom se radu istražuje utjecaj udarnog opterećenja na betonske ploče izvedene od cementnog morta. U okviru eksperimentalnog programa ispitano je ukupno devet uzoraka ploča dimenzija 500 x 500 x 50 mm. Pripremljeni uzorci različitih čvrstoća ispitani su metodom padajućeg tereta. Udarna čvrstoća uzoraka određena je na temelju mjerenih vrijednosti ubrzanja, udarnog opterećenja i pomaka. Osim toga, tijekom pokusa određen je i raspored pukotina koje nastaju nakon udarnog opterećenja. Ustanovljeno je da vrsta morta bitno utječe na udarnu čvrstoću uzoraka. Za svaki je uzorak provedena i analiza konačnim elemenatima radi provjere eksperimentalnih rezultata. Na odabranim su uzorcima uspoređene vrijednosti ubrzanja, pomaka i udarnog opterećenja. Prikazan je odnos između eksperimentalnih i numeričkih rezultata, a dobivene vrijednosti pokazuju da se metoda konačnih elemenata može primijeniti u ocjenjivanju dinamičkog odziva uzoraka podvrgnutih udarnom opterećenju male brzine., As structural members can be subjected to impact loading during their service life, impact experiments are applied for various materials and objects by taking different methods into consideration. The effect of impact load on concrete slabs prepared with cement-based mortars is investigated in this study. A total of nine slab specimens measuring 500 x 500 x 50 mm are tested within the experimental program. Test specimens are prepared to provide different strength values and tested under impact load using the drop test setup. The impact resistance values of the specimens are determined based on the acceleration, impact load and displacement values, as obtained by measurement devices. In addition, crack distribution of the specimens is observed during impact tests. It has been noted that mortar types have a significant effect on the impact behaviour of the specimens. The finite element analysis is generated for each specimen to verify experimental results. Time histories of the acceleration, displacement and impact load values of the selected test specimens are compared. The relationship between experimental and numerical analysis results is presented, which reveals that the finite element procedure can be used in the evaluation of dynamic response of test specimens under the low velocity impact loading.

Published
2023

18. Analize učinaka oštećenja na rešetkasto postolje izvanobalne platforme

Author

Gücüyen, Engin, Coşkun, Selim, Erdem, R. Tuğrul, Gücüyen, Engin, Coşkun, Selim, and Erdem, R. Tuğrul

Abstract

U ovom je istraživanju izvanobalna platforma, koja je podvrgnuta dinamičkom opterećenju za različite slučajeve oštećenja, modelirana analizom interakcije fluida i konstrukcije (engl. fluid-structure interaction - FSI). Razmatrani su različiti modeli oštećenja u slučaju kada je jedan stup bio oštećen, a Youngov modul oštećenog elementa smanjen je s četiri različita omjera intenziteta. Osim pet oštećenih konstrukcija, neoštećena je konstrukcija modelirana prema dva različita uvjeta razmaka stupova. Na taj su način oštećeni modeli uspoređivani i međusobno i s neoštećenim modelima. U ovom su radu modeli ispitivani primjenom numeričkog FSI postupka. Numerički postupak potvrđen je poluanalitičkim modeliranjem. U ovoj je fazi jednadžba gibanja jednog od konstrukcijskih modela riješena poluanalitičkom metodom temeljenom na sustavu s više stupnjeva slobode. Osim toga, numerički model okoline potvrđen je primjenom poluanalitičkog rješenja jednadžbe gibanja slobodne površine i krivulje valna brzina-valna sila. Za modeliranje konstrukcija i njihove okoline upotrijebljen je program Abaqus, utemeljen na metodi konačnih elemenata. Konstrukcije su modelirane primjenom Lagrangeova postupka, fluidno okruženje je modelirano primjenom Eulerova postupka. Modelirani su i uvjeti razmaka stupova i različiti omjeri intenziteta, te je zabilježen najnegativniji tip oštećenja., In this paper, an offshore platform subjected to dynamic loading for different damage cases was modelled via fluid-structure interaction (FSI) analysis. Different damage models were considered in the case where one leg was broken, and the Young’s modulus of the damaged member was reduced with four different severity ratios. In addition to the five damaged structures, the undamaged structure was modelled according to two different leg spacing conditions. Thus, the damaged models were compared among themselves as well as with undamaged models. In this study, models were investigated using a numerical FSI technique. The numerical technique was verified using semi-analytical modelling. At this stage, the equation of motion of one of the structural models was solved using a semi-analytical method based on a multi-degree-of-freedom system. In addition, the numerical environment model was verified using a semi-analytical solution of the free-surface motion equation and the wave velocity-wave force curve. An Abaqus finite-element analysis program was used to model the structures and their surroundings. While the structures were modelled using the Lagrangian technique, the fluid surroundings were modelled using the Eulerian technique. Both the conditions of leg spacing and different severity ratios were modelled, and the most negative damage type was revealed.

Published
2023

19. Investigation of impact behavior of shear deficient RC beams using nonlinear FEA.

Author

Yılmaz, Tolga, Erdem, R. Tuğrul, Kıshı, Norimitsu, and Anıl, Özgür

Subjects
*CONCRETE beams, *LAMINATED composite beams, *IMPACT loads, *NUMERICAL analysis, *REACTION forces, *FINITE element method
Abstract

In the scope of this study, the impact behavior of shear deficient RC beam was investigated by performing numerical analysis based on the finite element method and comparing it with the experimental results. The explicit dynamic analysis of 27 shear-deficient RC beams of which experiments were previously carried out by one of the authors has been conducted by utilizing ABAQUS software, and also it is aimed to establish the reasonable finite element model that is accordant with the experimental results. The variables of the experimental study were the ratio of longitudinal reinforcement on the tension side of the member, the shear-span ratio, and impact velocities. The time histories of impact load, reaction forces on supports, and the displacements measured from the mid-span of the beams were recorded during the experiments, and the energy absorption capacities of RC beams were evaluated based on an area enclosed by the impact load vs. displacement loops. It is investigated and interpreted to what extent the proposed nonlinear finite element method could be successful for analyzing the values of impact load and mid-span displacements and to what extent the explicit dynamic solution technique could be successful for simulating experiments. It is found that the maximum differences between the results obtained by numerical analysis using ABAQUS and the experimental results are 7% and 14% for impact loads and mid-span displacements, respectively. [ABSTRACT FROM AUTHOR]

Published
2024
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25. Investigation of concrete slabs made with cement based mortars under impact loads

Author

Erdem, R. Tuğrul, Berberoğlu, Murat, and Gücüyen, Engin

Subjects
concrete slab, drop test setup, impact load, numerical analysis, betonska ploča, ispitivanje padajućim teretom, udarno opterećenje, numerička analiza
Abstract

Na konstrukcije tijekom njihove uporabe mogu djelovati razna udarna opterećenja pa se stoga provode različite metode ispitivanja materijala i konstrukcija udarnim opterećenjem. U ovom se radu istražuje utjecaj udarnog opterećenja na betonske ploče izvedene od cementnog morta. U okviru eksperimentalnog programa ispitano je ukupno devet uzoraka ploča dimenzija 500 x 500 x 50 mm. Pripremljeni uzorci različitih čvrstoća ispitani su metodom padajućeg tereta. Udarna čvrstoća uzoraka određena je na temelju mjerenih vrijednosti ubrzanja, udarnog opterećenja i pomaka. Osim toga, tijekom pokusa određen je i raspored pukotina koje nastaju nakon udarnog opterećenja. Ustanovljeno je da vrsta morta bitno utječe na udarnu čvrstoću uzoraka. Za svaki je uzorak provedena i analiza konačnim elemenatima radi provjere eksperimentalnih rezultata. Na odabranim su uzorcima uspoređene vrijednosti ubrzanja, pomaka i udarnog opterećenja. Prikazan je odnos između eksperimentalnih i numeričkih rezultata, a dobivene vrijednosti pokazuju da se metoda konačnih elemenata može primijeniti u ocjenjivanju dinamičkog odziva uzoraka podvrgnutih udarnom opterećenju male brzine., As structural members can be subjected to impact loading during their service life, impact experiments are applied for various materials and objects by taking different methods into consideration. The effect of impact load on concrete slabs prepared with cement-based mortars is investigated in this study. A total of nine slab specimens measuring 500 x 500 x 50 mm are tested within the experimental program. Test specimens are prepared to provide different strength values and tested under impact load using the drop test setup. The impact resistance values of the specimens are determined based on the acceleration, impact load and displacement values, as obtained by measurement devices. In addition, crack distribution of the specimens is observed during impact tests. It has been noted that mortar types have a significant effect on the impact behaviour of the specimens. The finite element analysis is generated for each specimen to verify experimental results. Time histories of the acceleration, displacement and impact load values of the selected test specimens are compared. The relationship between experimental and numerical analysis results is presented, which reveals that the finite element procedure can be used in the evaluation of dynamic response of test specimens under the low velocity impact loading.

Published
2023

27. Dynamic behavior of the antiferromagnetically coupled bilayer Ising model.

Author

Ekiz, C., Erdem, R., and Semet, D.

Subjects
*ISING model, *METASTABLE states, *PHASE diagrams, *MAGNETIC properties, *MAGNETIZATION, *BILAYER lipid membranes
Abstract

Using the path probability and lowest approximation of cluster variation method, we study the dynamic and equilibrium properties of a bilayer magnetic system, consisting of two ferromagnetic monolayers antiferromagnetically coupled for different spins (𝜎 = 1/2 and 𝑆 = 1). Firstly, numerical results of the monolayer and total magnetizations are presented under the effect of the diverse physical parameters, and the phase diagrams of bilayer system are discussed. Then, since it is well established that the path probability method is an effective method for the existence of metastable states, the time evolution of monolayer- and total magnetizations is investigated. [ABSTRACT FROM AUTHOR]

Published
2023
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33. A Comparative Study on Damaged Behavior of Offshore Jacket Structures

Author

GÜCÜYEN, Engin and ERDEM, R. Tuğrul

Subjects
Coupled Eularian Lagrangian Technique,Offshore Structures,Damaged Behaviour,Environmental Loads, Engineering, Mühendislik
Abstract

In this study, the damage behaviour of the offshore jacket structures under environmental loads has been investigated. K-type and inverted K-type jacket structures have been used in order to compare the damage behaviours. A total of four structures such as one K-type, one inverted K-type and two damaged types of each one are modelled. Damage modelling has been performed in the form of a rupture in a leg. The examined models have 60 m height, three stories, cylindrical elements and they are angled-four-legged structures fixed to the seabed. Structures are affected by environmental forces including wind and wave effects as well as operational loads. The Eurocode velocity profile and the linear wave velocity profile have been used to calculate wind and wave forces, respectively. Abaqus finite elements software is utilized in the analyses. The force-displacement transfer between the structure and the marine environment has been performed by bidirectional fluid-structure interaction (FSI) analyses. In the bidirectional interaction analysis, modelling has been generated by CEL technique that is the combination of Eulerian-Lagrangian procedures. In this technique, the marine environment and the structure are created by Eularian and Lagrangian approaches respectively. In structural analysis, modal behaviours, frequencies, displacement and stress distributions for damaged and undamaged models have been obtained. The changes in the behaviour of different types of jacket structures have been investigated in the end.

Published
2022

34. Ocjena ponašanja i prijedlog pojačanja postojeće građevine

Author

Erdem, R. Tuğrul, Karal, Koçali, Erdem, R. Tuğrul, and Karal, Koçali

Abstract

Kao odgovor na pojavu snažnih potresa u seizmičkim se propisima provode revizije metoda za projektiranje građevina otpornih na seizmička djelovanja. Poznato je da su mnoge postojeće građevine smještene u seizmički aktivnim područjima diljem svijeta. Potresi uzrokuju znatna oštećenosti elemenata konstrukcije, te djelomično ili potpuno rušenje građevina. Zbog toga se, u okviru različitih seizmičkih propisa, diljem svijeta provodi ocjenjivanje seizmičkog ponašanja i postupaka pojačanja postojećih građevina. Zahvaljujući razvoju računalne tehnologije, nelinearne metode danas nude sve pouzdanije postupke za određivanje ponašanja građevina. U ovom se radu najprije provodi nelinearna analiza ponašanja postojeće tipične armiranobetonske građevine srednje visine prema turskom seizmičkom propisu – 2018 te prema američkoj normi ASCE. Nakon ocjene oštećenosti konstrukcijskih elementa, građevina je pojačana čeličnim razuporama te je zatim analiza ponovljena. U postupku je korišten računalni program za analizu konačnih elemenata SAP2000. Koeficijenti oštećenosti konstrukcijskih elemenata te modalna svojstva i međukatni pomaci, određeni su i uspoređeni prema oba spomenuta propisa, te je zaključeno da predložena metoda pojačanja može biti prihvatljivo alternativno rješenje za takve građevine., Due to major-scale earthquakes, revisions of earthquake resistant structural design methods have periodically been made in seismic codes. It is known that many existing buildings are located in active seismic zones in all parts of the world. Severe damage to structural members, with partial or total collapse of buildings, has been observed in past earthquakes. Consequently, the evaluation of seismic performance and strengthening techniques of the existing buildings according to various seismic codes has become a global issue in structural engineering. With the development of computer technology, non-linear methods have been offering increasingly reliable evaluation procedures in the performance-based assessment of buildings. In this study, non-linear performance analysis of an existing typical mid-rise reinforced concrete building is first performed according to Turkish Building Earthquake Code-2018 and American Standard, ASCE. After evaluation of damage to structural members, the building is strengthened by steel braces and the analysis is performed once again. The SAP2000 finite elements analysis software is utilized in the solutions. Damage ratios of structural members as well as modal properties and storey drift ratios are determined and compared according to both codes, and it is concluded that the proposed strengthening method could be a significant alternative in such buildings.

Published
2022

35. Numeričko modeliranje plutajuće kontrukcije primjenom spregnute Euler-Lagrangeove formulacije

Author

Gücüyen, Engin, Erdem, R. Tuğrul, Gücüyen, Engin, and Erdem, R. Tuğrul

Abstract

Plutajuće konstrukcije složeni su sustavi sastavljeni od platforme (pontona), priveznih elemenata i konopa. U ovom radu istražuje se ponašanje pontona koji se koristi kao plutajuća konstrukcija i četiri privezna elementa pod utjecajem različitih uvjeta opterećenja valovima. Kombinirana analiza se numerički provodi između kretanja pontona, konopa za privez i morskog okoliša. Konopi za privez modelirani su kao mrežni elementi, a ponton je modeliran kao kruto tijelo sa šest stupnjeva slobode kretanja. Stanje opterećenja valovima predstavljeno je pomoću dva različita valna spektra. Prvi se spektar (slučaj I) generira iz jednog sinusoidnog vala korištenjem Jonswapovog spektra, drugi (slučaj II) se generira iz superponiranog višesinusoidnog vala. Vremenski promjenjivo kretanje pontona i napetosti konopa za privez određeni su numeričkom analizom za slučaj I i slučaj II. Na temelju rezultata oba slučaja određene su kritične vrijednosti. U numeričkim rješenjima primijenjena je dvosmjerna analiza interakcije fluid-konstrukcija (FSI). U analizi se provodi potpuno nelinearna simulacija slobodne površine pomoću tehnike spregnute Euler-Lagrangeove formulacije. Uz to, numerički rezultati uspoređeni su s rezultatima dobivenim analitičkim rješavanjem kota slobodnih površina., Floating structures are complex systems composed of superstructure, floating-mooring components, and anchors. In this study, the behaviours of a pontoon, which is used as a floating structure, and four mooring elements under different wave loading conditions were investigated. A numerical analysis of the coupled motions of the pontoon, mooring lines, and marine environment was performed. While the mooring lines were modelled as wire elements, the pontoon was modelled as a rigid body with six degrees of freedom. Wave loading conditions were represented using two different wave spectra. The first spectrum (Case I) was generated based on a single sinusoidal wave utilising the JONSWAP spectrum, whereas the second one (Case II) was generated based a superimposed multi-sinusoidal wave. Time-varying motions of the pontoon and tensions of the mooring lines were determined based on the numerical analyses for Cases I and II. Critical values were determined using the results of both cases. The numerical solutions were based on bidirectional fluid–structure interaction (FSI) analysis. A fully non-linear free surface simulation was performed using the coupled Eulerian–Lagrangian (CEL) technique. Furthermore, numerical results were compared with the results obtained from analytical solutions of free surface elevations.

Published
2022

36. BETONARME DÖŞEMELERİN ÇARPMA DAVRANIŞI ÜZERİNE İSTATİSTİKSEL ÇALIŞMA

Author

ERDEM, R. Tuğrul, GÜCÜYEN, Engin, and ÖZYÜKSEL ÇİFTÇİOĞLU, Aybike

Subjects
Darbe,döşeme,test düzeneği,GANs, Impact,slab,test setup,GANs, İnşaat Mühendisliği, Civil Engineering
Abstract

Reinforced concrete (RC) slabs are significant members in the structural system of a building. Although RC slabs are designed under the effect of static dead and live loads, they may be exposed to low velocity impact loading during their service lives. In this study, behavior of a simply supported RC slab under sudden impact effect is experimentally investigated in the first place. For this purpose, a drop weight test setup and essential measurement devices such as accelerometers, dynamic load cell, optic photocells, and data logger are utilized in impact experiments. In the numerical analysis part, a new method is proposed which uses the Generative Adversarial Networks (GANs) for generating the synthetic data of RC slabs. GANs are a type of deep learning algorithm that goes beyond the standard supervised or unsupervised learning techniques. They're a type of generative model in which two networks compete against each other to generate data that is as close to an authentic, natural dataset as possible. One network is called the generator and takes in raw inputs. The other network is called the discriminator, which takes in the generated outputs and tries to identify them as fake or not. The numerical analysis findings show that our model is capable of generating tabular synthetic data that properly represent the RC slab's actual behavior. This situation could be a valuable tool for engineers who need to perform dynamic analysis on RC slabs, as it would allow them to generate data for input into their analysis without having to perform physical tests., Betonarme döşemeler bir binanın taşıyıcı sisteminde önemli elemanlardır. Betonarme döşemeler statik ölü ve hareketli yüklerin etkisi altında tasarlanmalarına rağmen hizmet ömürleri boyunca düşük hızlı darbe yüklerine maruz kalabilirler. Bu çalışmada öncelikle basit mesnetli betonarme bir döşemenin ani darbe etkisi altındaki davranışı deneysel olarak incelenmiştir. Bu amaçla, darbe deneylerinde ağırlık düşürme testi düzeneği, ivmeölçer, dinamik yük hücresi, optik fotosel ve veri kaydedici gibi temel ölçüm cihazları kullanılmaktadır. Sayısal analiz bölümünde, betonarme döşemelerin sentetik verilerini üretmek için Çekişmeli Üretici Ağları (GANs) kullanan yeni bir yöntem önerilmiştir. GAN'lar, standart denetimli veya denetimsiz öğrenme tekniklerinin ötesine geçen bir tür derin öğrenme algoritmasıdır. Bunlar, mümkün olduğu kadar özgün, doğal bir veri kümesine en yakın verileri üretmek için iki ağın birbiriyle rekabet ettiği bir tür üretici modeldir. Bir ağ üretici olarak adlandırılır ve ham girdileri alır. Diğer ağ, üretilen çıktıları alan ve bunların sahte olup olmadığını belirlemeye çalışan ayırıcı olarak adlandırılır. Sayısal analiz bulguları, modelimizin, betonarme döşemenin gerçek davranışını düzgün bir şekilde temsil eden sentetik verilerini üretme yeteneğine sahip olduğunu göstermektedir. Bu durum, fiziksel testler yapmak zorunda kalmadan analizlere girdi için veri üretme imkânı sağlayacağından, betonarme döşemeler üzerinde dinamik analiz yapması gereken mühendisler için değerli bir araç olabilir.

Published
2022

37. Performance assessment and strengthening proposal of an existing building

Author

Erdem, R. Tuğrul and Karal, Koçali

Subjects
reinforced concrete building, performance analysis, seismic codes, strengthening, armiranobetonska građevina, analiza učinkovitosti, seizmički propisi, pojačanje
Abstract

Kao odgovor na pojavu snažnih potresa u seizmičkim se propisima provode revizije metoda za projektiranje građevina otpornih na seizmička djelovanja. Poznato je da su mnoge postojeće građevine smještene u seizmički aktivnim područjima diljem svijeta. Potresi uzrokuju znatna oštećenosti elemenata konstrukcije, te djelomično ili potpuno rušenje građevina. Zbog toga se, u okviru različitih seizmičkih propisa, diljem svijeta provodi ocjenjivanje seizmičkog ponašanja i postupaka pojačanja postojećih građevina. Zahvaljujući razvoju računalne tehnologije, nelinearne metode danas nude sve pouzdanije postupke za određivanje ponašanja građevina. U ovom se radu najprije provodi nelinearna analiza ponašanja postojeće tipične armiranobetonske građevine srednje visine prema turskom seizmičkom propisu – 2018 te prema američkoj normi ASCE. Nakon ocjene oštećenosti konstrukcijskih elementa, građevina je pojačana čeličnim razuporama te je zatim analiza ponovljena. U postupku je korišten računalni program za analizu konačnih elemenata SAP2000. Koeficijenti oštećenosti konstrukcijskih elemenata te modalna svojstva i međukatni pomaci, određeni su i uspoređeni prema oba spomenuta propisa, te je zaključeno da predložena metoda pojačanja može biti prihvatljivo alternativno rješenje za takve građevine., Due to major-scale earthquakes, revisions of earthquake resistant structural design methods have periodically been made in seismic codes. It is known that many existing buildings are located in active seismic zones in all parts of the world. Severe damage to structural members, with partial or total collapse of buildings, has been observed in past earthquakes. Consequently, the evaluation of seismic performance and strengthening techniques of the existing buildings according to various seismic codes has become a global issue in structural engineering. With the development of computer technology, non-linear methods have been offering increasingly reliable evaluation procedures in the performance-based assessment of buildings. In this study, non-linear performance analysis of an existing typical mid-rise reinforced concrete building is first performed according to Turkish Building Earthquake Code-2018 and American Standard, ASCE. After evaluation of damage to structural members, the building is strengthened by steel braces and the analysis is performed once again. The SAP2000 finite elements analysis software is utilized in the solutions. Damage ratios of structural members as well as modal properties and storey drift ratios are determined and compared according to both codes, and it is concluded that the proposed strengthening method could be a significant alternative in such buildings.

Published
2022

38. Numerical modelling of floating structure with coupled Eulerian–Lagrangian technique

Author

Gücüyen, Engin and Erdem, R. Tuğrul

Subjects
floating structure, fluid–structure interaction, finite elements analysis, coupled Eulerian–Lagrangian technique, plutajuća konstrukcija, interakcija fluida i konstrukcije, analiza konačnih elemenata, spregnuta Euler-Lagrangeova (CEL) formulacija
Abstract

Plutajuće konstrukcije složeni su sustavi sastavljeni od platforme (pontona), priveznih elemenata i konopa. U ovom radu istražuje se ponašanje pontona koji se koristi kao plutajuća konstrukcija i četiri privezna elementa pod utjecajem različitih uvjeta opterećenja valovima. Kombinirana analiza se numerički provodi između kretanja pontona, konopa za privez i morskog okoliša. Konopi za privez modelirani su kao mrežni elementi, a ponton je modeliran kao kruto tijelo sa šest stupnjeva slobode kretanja. Stanje opterećenja valovima predstavljeno je pomoću dva različita valna spektra. Prvi se spektar (slučaj I) generira iz jednog sinusoidnog vala korištenjem Jonswapovog spektra, drugi (slučaj II) se generira iz superponiranog višesinusoidnog vala. Vremenski promjenjivo kretanje pontona i napetosti konopa za privez određeni su numeričkom analizom za slučaj I i slučaj II. Na temelju rezultata oba slučaja određene su kritične vrijednosti. U numeričkim rješenjima primijenjena je dvosmjerna analiza interakcije fluid-konstrukcija (FSI). U analizi se provodi potpuno nelinearna simulacija slobodne površine pomoću tehnike spregnute Euler-Lagrangeove formulacije. Uz to, numerički rezultati uspoređeni su s rezultatima dobivenim analitičkim rješavanjem kota slobodnih površina., Floating structures are complex systems composed of superstructure, floating-mooring components, and anchors. In this study, the behaviours of a pontoon, which is used as a floating structure, and four mooring elements under different wave loading conditions were investigated. A numerical analysis of the coupled motions of the pontoon, mooring lines, and marine environment was performed. While the mooring lines were modelled as wire elements, the pontoon was modelled as a rigid body with six degrees of freedom. Wave loading conditions were represented using two different wave spectra. The first spectrum (Case I) was generated based on a single sinusoidal wave utilising the JONSWAP spectrum, whereas the second one (Case II) was generated based a superimposed multi-sinusoidal wave. Time-varying motions of the pontoon and tensions of the mooring lines were determined based on the numerical analyses for Cases I and II. Critical values were determined using the results of both cases. The numerical solutions were based on bidirectional fluid–structure interaction (FSI) analysis. A fully non-linear free surface simulation was performed using the coupled Eulerian–Lagrangian (CEL) technique. Furthermore, numerical results were compared with the results obtained from analytical solutions of free surface elevations.

Published
2022

39. IMPACT EFFECT ON THE EXISTING AND STRENGTHENED REINFORCED CONCRETE COLUMNS.

Author

ERDEM, R. Tuğrul and GÜCÜYEN, Engin

Subjects
TRANSVERSE reinforcements, CONCRETE columns, REINFORCED concrete, IMPACT loads, FINITE element method, NONLINEAR analysis
Abstract

Copyright of Journal of Design Architecture & Engineering (FBU-DAE) / Tasarım, Mimarlık ve Mühendislik Dergisi is the property of Journal of Design Architecture & Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023
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41. Investigation of Seismic Performance of Reinforced Concrete Buildings Having Stiffness Irregularity between Adjacent Floors

Author

UYAN, Berk and ERDEM, R. Tuğrul

Subjects
Engineering, Deprem performansı,Hasar seviyeleri,TBDY-2018,Yumuşak kat, Mühendislik
Abstract

Türk Bina Deprem Yönetmeliği-2018’de (TBDY-2018) tanımlanan ve düşey doğrultuda düzensizlik durumlarından biri olan komşu katlar arası rijitlik düzensizliği (yumuşak kat), özellikle zemin katları ticari amaçlar nedeniyle üst katlardan farklı tasarlanan mevcut betonarme binalarda yaygın olarak görülmektedir. Yumuşak kat düzensizliğinin bulunduğu katta yer alan kolonlarda, deprem etkisi altında oluşan yerdeğiştirmeler sonucunda kırılmalar gerçekleşmektedir. Bu çalışma kapsamında, yumuşak kat düzensizliğine sahip mevcut 3, 5 ve 7 katlı mevcut betonarme binaların taşıyıcı sistem güvenlikleri TBDY-2018’e göre incelenmiştir. Mevcut binalarda, kat planı, kesit ve malzeme özellikleri aynı olarak alınmıştır. Doğrusal olmayan yöntemlerinden sabit tek modlu itme yöntemi, binaların deprem performanslarını belirlemek için kullanılmıştır. Bilgisayar analizleri SAP2000 yapısal analiz programı ile gerçekleştirilmiştir. Farklı zemin sınıflarında bulunan binaların taşıyıcı sistem elemanlarında oluşacak hasar durumlarını belirlemek için, analizler iki farklı zemin sınıfı için yapılmıştır. Mevcut betonarme binaların performans düzeyleri, farklı kat adetleri ve zemin sınıflarına göre karşılaştırmalı olarak sunulmuş ve önerilerde bulunulmuştur.

Published
2021

42. Impact behavior of low strength concrete slab strengthened with fan type anchored carbon fiber‐reinforced polymer strips.

Author

Çalışkan, Özlem, Aras, Murat, Yılmaz, Tolga, Anıl, Özgür, and Erdem, R. Tuğrul

Subjects
CARBON fiber-reinforced plastics, CONCRETE slabs, DIGITAL image correlation, IMPACT loads, DYNAMIC loads, CONCRETE testing, NUMERICAL analysis
Abstract

This study investigated the behavior of slabs produced with low compressive strength concrete without reinforcements under the effect of sudden dynamic impact loading. In addition, an experimental study was conducted by proposing a strengthening method with anchored carbon fiber‐reinforced polymer (CFRP) strips to strengthen the nonreinforced slabs with low‐strength concrete against sudden dynamic impact loads to improve their performance. The variables examined in the experimental study were the placement of the CFRP strips adhered to the concrete slabs for strengthening purposes and anchors in the strips. A constant energy level of impact loading was applied to the concrete slab test specimens with the authors' free weight drop test setup. The acceleration‐time, displacement‐time, strain‐time, and applied impact loading‐time measurements on the concrete slabs were examined, and comments were made about the strengthening method applied to the slab test specimens. In addition, numerical analysis of the tested concrete slabs with ABAQUS finite element software was performed, and the results were compared with the experimental results. In the comparison, it was investigated to what extent numerical analysis and this type of impact analysis can be done realistically and compatible with the experimental results. Within the scope of the study, the strengthening method applied with fan‐type anchored CFRP strips significantly improved and increased the impact performance of concrete slabs produced with low‐strength concrete. [ABSTRACT FROM AUTHOR]

Published
2023
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45. Synchronous Occurrence of Hodgkin’s Lymphoma and Lung Cancer

Author

Aslan, Cetin G, Erdem R, Aykas F, E. Kurtoğlu, Mustafa Çelik, M. Göçer, and Ozen In

Subjects
Oncology, medicine.medical_specialty, immune system diseases, business.industry, hemic and lymphatic diseases, Internal medicine, medicine, General Medicine, Hodgkin's lymphoma, medicine.disease, Lung cancer, business
Abstract

Hodgkin lymphoma is an uncommon neoplasm that characterized young age of onset, Hodgkin and Reed-Sternberg (HRS) cells derived from B-lymphocytes and a high cure rate, even when the patient presents with advanced metastatic spread. Lung cancer is the most common cancer worldwide and is still responsible for the most cancer deaths. We present an extremely rare case of coexisting Hodgkin lymphoma and lung cancer in a 67-year-old male patient. He initially presented with chest pain. Pet/ct revealed mass in the right lung and lymph nodes in the neck. Biopsy from the premaxillary lymph node was compatible with classical Hodgkin lymphoma. In terms of second primary malignancy, a biopsy was also performed from the mass in the right lung. Pathology showed a pulmonary adenocarcinoma and a right upper lobectomy was then performed. This patient was treated with gemcitabine plus docetaxel for lung cancer. At the end of treatment pet/ct was complete response including lymph nodes in the neck. Therefore, we did not give any treatment for Hodgkin lymphoma. The patient is still being followed up in remission.

Published
2021
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47. EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade

Author

Alves Batista, R., Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, G., Blasi, P., Böhmer, C. G., Bošnjak, Ž., Bringmann, T., Burrage, C., Bustamante, M., Calderón Bustillo, J., Byrnes, C. T., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., Rham, C. de, Matteo, A. di, Domènech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, D., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Levi Said, J., Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J., Martinelli, M., Martinsolami, C. J. A. P., Millington, P., Moesta, P., Nippel, K., Niro, V., O'Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., P. Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Rida Khalifeh, A., Riotto, A., Roiban, R., Rubio, J., Sahlén, M., Sabti, N., Sagunski, L., Šarčević, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., Vliet, A. van, Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., and Zeng, M.

Subjects
Physics, ddc:530
Published
2021
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50. EuCAPT White Paper : Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade

Author

Alves-Batista, R., Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, G., Blasi, P., Böhmer, C. G., Bošnjak, Ž, Bringmann, T., Burrage, C., Bustamante, M., Calderón Bustillo, J., Byrnes, C. T., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., de Rham, C., di Matteo, A., Domènech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, F., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Levi Said, J., Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J. E., Martinelli, M., Martins, C. J. A. P., Matthews, J. H., Meli, A., Mena, O., Mifsud, J., Miller Bertolami, M. M., Millington, P., Moesta, P., Nippel, K., Niro, V., O’Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Rida Khalifeh, A., Riotto, A., Roiban, R., Rubio, J., Sahlén, M., Sabti, N., Sagunski, L., Šarčević, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., van Vliet, A., Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., Zeng, M., Alves-Batista, R., Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, G., Blasi, P., Böhmer, C. G., Bošnjak, Ž, Bringmann, T., Burrage, C., Bustamante, M., Calderón Bustillo, J., Byrnes, C. T., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., de Rham, C., di Matteo, A., Domènech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, F., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Levi Said, J., Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J. E., Martinelli, M., Martins, C. J. A. P., Matthews, J. H., Meli, A., Mena, O., Mifsud, J., Miller Bertolami, M. M., Millington, P., Moesta, P., Nippel, K., Niro, V., O’Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Rida Khalifeh, A., Riotto, A., Roiban, R., Rubio, J., Sahlén, M., Sabti, N., Sagunski, L., Šarčević, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., van Vliet, A., Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., and Zeng, M.

Published
2021
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