TY - JOUR AU - Yu, Seung-Man TI - A study of the possibility of fat quantification diagnosis technology in ultrasound image using machine learning JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC PY - 2024 PG - 8 SN - 0374-4884 DO - 10.1007/s40042-023-01004-4 UR - https://m2.mtmt.hu/api/publication/34631390 ID - 34631390 LA - English DB - MTMT ER - TY - JOUR AU - Lee, C AU - Lee, SK AU - Lee, S AU - van, Tol J AU - Choi, KY TI - Random-singlet-like state emergent in s=5/2 frustrated cubic lattice JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC VL - 84 PY - 2024 SP - 151 EP - 157 PG - 7 SN - 0374-4884 DO - 10.1007/s40042-023-00987-4 UR - https://m2.mtmt.hu/api/publication/34607070 ID - 34607070 LA - English DB - MTMT ER - TY - JOUR AU - Lee, J.S.H. AU - Park, I. AU - Watson, I.J. AU - Yang, S. TI - Zero-permutation jet-parton assignment using a self-attention network JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC VL - 84 PY - 2024 IS - 6 SP - 427 EP - 438 PG - 12 SN - 0374-4884 DO - 10.1007/s40042-024-01037-3 UR - https://m2.mtmt.hu/api/publication/34754401 ID - 34754401 N1 - Department of Physics, University of Seoul, Seoul, 02504, South Korea Department of Physics, Hanyang University, Seoul, 04763, South Korea Export Date: 25 March 2024 Correspondence Address: Watson, I.J.; Department of Physics, South Korea; email: ijwatson@physics.uos.ac.kr Correspondence Address: Yang, S.; Department of Physics, South Korea; email: seungjin.yang@cern.ch LA - English DB - MTMT ER - TY - JOUR AU - Kim, K.-Y. AU - Kim, M. AU - Lee, K.-S. TI - Structure constants of a single trace operator and determinant operators from hexagon JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC VL - 84 PY - 2024 IS - 3 SP - 180 EP - 188 PG - 9 SN - 0374-4884 DO - 10.1007/s40042-023-00958-9 UR - https://m2.mtmt.hu/api/publication/34664402 ID - 34664402 N1 - Export Date: 25 April 2024 Correspondence Address: Kim, M.; Center for Quantum Spacetime, South Korea; email: mimkim80@gmail.com LA - English DB - MTMT ER - TY - JOUR AU - Lee, J AU - Byeon, HJ AU - Do, HS AU - Huh, C AU - Kim, B AU - Lee, S AU - Hauptman, JM AU - Ryu, MS AU - Pak, SI AU - Ye, R AU - Bahng, EJ TI - Positron confinement by magnetic bottle for KoreA Experiment on Magnetic Monopole (KAEM) JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC VL - 84 PY - 2024 IS - 2 SP - 108 EP - 119 PG - 12 SN - 0374-4884 DO - 10.1007/s40042-023-00969-6 UR - https://m2.mtmt.hu/api/publication/34486087 ID - 34486087 LA - English DB - MTMT ER - TY - JOUR AU - Kim, Na-Ri AU - Joo, Kyung-Kwang AU - Lee, Hyun-Gi TI - A feasibility study on distinguishing fluor concentrations in liquid scintillators from scintillation events observed by photomultiplier tubes using convolutional neural networks JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC VL - 84 PY - 2024 IS - 1 SP - 1 EP - 10 PG - 10 SN - 0374-4884 DO - 10.1007/s40042-023-00981-w UR - https://m2.mtmt.hu/api/publication/34641253 ID - 34641253 LA - English DB - MTMT ER - TY - JOUR AU - Kang, Yung-Gyung AU - Park, Jeong-Man TI - A stochastic susceptible-infected-susceptible epidemic model with Stratonovich processes JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC PY - 2023 PG - 6 SN - 0374-4884 DO - 10.1007/s40042-023-00992-7 UR - https://m2.mtmt.hu/api/publication/34613859 ID - 34613859 AB - We investigate the susceptible-infected-susceptible (SIS) epidemic model under fluctuating random environments. We consider the effect of uncertainty in estimation of parameters in the SIS model, the infection rate and the recovery rate, by using the technique of parameter perturbation. Previous works on parameter perturbation employed the Ito stochastic differential equation (SDE) to examine the effect of environmental stochasticity and found that epidemic thresholds occur at the reduced value of the basic reproduction number by the amount proportional to the variance of the perturbation. We employ the Stratonovich SDE, which seems to be more applicable for parameter perturbation in the epidemic model as well as the Ito SDE and find that the effect of environmental stochasticity in the Stratonovich SDE vanishes when the fluctuation is Gaussian, whereas the effect in the Ito SDE is proportional to the variance. Furthermore we carry out numerical simulations in the form of the Gillespie algorithm and find that the results of simulations are consistent with the analytic predictions. LA - English DB - MTMT ER - TY - JOUR AU - Kim, Minjae TI - Strategy inference using the maximum likelihood estimation in the iterated prisoner's dilemma game JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC PY - 2023 PG - 6 SN - 0374-4884 DO - 10.1007/s40042-023-00954-z UR - https://m2.mtmt.hu/api/publication/34586260 ID - 34586260 AB - The iterated prisoner's dilemma game has shown how cooperation evolves based on direct reciprocity. In the course of iterated interactions, a player can observe the co-player's past actions, infer his or her strategy, and react to it. Among the above three processes, the fidelity of inference is relatively unexplored compared to the others. In this work, we explicitly construct an inference process between observation and reaction. Specifically, the focal player infers the co-player's strategy by applying the maximum likelihood estimation to the observed sequence of actions. Our first finding is that the focal player's inference is accurate when both players take only their last actions into consideration if the observed sequence is sufficiently long. To see the case in which inference must be inaccurate, we also set the focal player's memory length to be shorter than the co-player's. In this case, we choose a combination of Tit-for-tat and Anti-tit-for-tat (TA) as the co-player's long-memory strategy. TA satisfies the following three conditions: (1) mutual cooperation is achieved when all players use the strategy, (2) the strategy exploits unconditional cooperation, and (3) a player using this strategy is not exploited repeatedly by any co-player. The short-memory player inaccurately infers TA as either Tit-for-tat, Win-Stay-Lose-Shift, or Grim trigger, depending on his or her own strategy. This work presents how a long-memory strategy is projected onto a short-memory one by inference with information loss. In addition, we suggest that each of those three well-known strategies could be a facet of a single successful strategy with a higher cognitive capacity. LA - English DB - MTMT ER - TY - JOUR AU - Park, Hee Chul AU - Myoung, Nojoon TI - Strain-induced flat bands in hexagonal quantum dot networks of graphene nanoribbons with nanobubbles JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC VL - 83 PY - 2023 SP - 692 EP - 699 PG - 8 SN - 0374-4884 DO - 10.1007/s40042-023-00936-1 UR - https://m2.mtmt.hu/api/publication/34302249 ID - 34302249 AB - We theoretically study the electronic properties of graphene nanoribbon (GNR) superlattices with an arrangement of nanobubbles. The nanobubbles' strain-induced localized states are considered as six quantum dots, and the periodic arrangement of the nanobubbles in the GNR superlattices is utilized to create hexagonal quantum dot networks along the GNR. The resulting band structures reveal that two flat bands appear in the armchair GNR (AGNR) superlattices. We also observe two compact localized states, that correspond to the two emergent flat bands. Our numerical results are explained comprehensively by introducing the model Hamiltonian for the hexagonal chain, which is in good agreement with the results from the armchair GNR and zigzag GNR superlattices. The flat-band energies are shown to be correlated with the coupling strength between the quantum dots and can be adjusted through strain engineering. The band flattening of the GNR superlattices via strain engineering may provide a way to access graphene-based flat-band construction, enabling the exploration of the quantum-correlated states of the flat bands due to their macroscopic degeneracy. LA - English DB - MTMT ER - TY - JOUR AU - Roh, Dahae AU - Goh, K. -I. TI - Growing hypergraphs with preferential linking JF - JOURNAL OF THE KOREAN PHYSICAL SOCIETY J2 - J KOREAN PHYS SOC PY - 2023 PG - 10 SN - 0374-4884 DO - 10.1007/s40042-023-00909-4 UR - https://m2.mtmt.hu/api/publication/34237263 ID - 34237263 N1 - Export Date: 28 November 2023 Correspondence Address: Goh, K.-I.; Department of Physics, South Korea; email: kgoh@korea.ac.kr AB - A family of models of growing hypergraphs with preferential rules of new linking is introduced and studied. The model hypergraphs evolve via the hyperedge-based growth as well as the node-based one, thus generalizing the preferential attachment models of scale-free networks. We obtain the degree distribution and hyperedge size distribution for various combinations of node- and hyperedge-based growth modes. We find that the introduction of hyperedge-based growth can give rise to power law degree distribution P(k) similar to k(-gamma) even without node-wise preferential attachments. The hyperedge size distribution P(s) can take diverse functional forms, ranging from exponential to power law to a nonstationary one, depending on the specific hyperedge-based growth rule. Numerical simulations support the mean-field theoretical analytical predictions. LA - English DB - MTMT ER -