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디지털 트윈에서 응용의 품질을 향상하기 위해 디지털 객체에 대한 높은 신선도가 필요하다.

그러나 갱신 및 추론 작업은 제한된 컴퓨팅 자원을 공유하므로, 신선도와 작업 처리율 사이의 상충관계가 발생한다. 기존 연구는 작업 처리율을 우선하므로 작업 도착율이 증가할 때 신선도가저하된다. 이러한 문제를 해결하기 위해 본 논문에서는 예산 신선도 기반 스케줄링 방안을 제안한다. 제안 방안은 실시간으로 예산 신선도를 계산하여 갱신 작업 수행 시점을 동적으로 조정함으로써 요구 신선도를 만족한다. 시뮬레이션 결과는 제안 방안이 일부 작업을 거부함으로써 요구되는 신선도를 유지할 수 있음을 보인다. 제안 방안은 작업 처리율보다 신선도 보장이 중요한 응용에 적합한 스케줄링 방안으로 활용될 수 있다.

In digital twin systems, maintaining a high level of freshness for cyber twins is essential for accurate inference and real‑time decision making. However, update tasks and inference tasks are processed under limited computing resources, causing a trade-off between task throughput and digital twin freshness.

Existing scheduling methods prioritize task throughput, resulting in degraded digital twin freshness under a high traffic arrival rate. To address this issue, we propose an expected-freshness–based scheduling scheme that dynamically determines the execution timing of update tasks by predicting the expected number of inference tasks within each update interval. By estimating the maximum achievable freshness and scheduling update tasks when degradation is expected, the proposed scheme ensures the required digital twin freshness level. Simulation results show that our scheme maintains digital twin freshness even under increasing task arrival rates, while incurring only moderate task rejection. The proposed scheduling scheme is suitable for applications where freshness is more critical than task throughput.

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권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
(A) GNN-based bitcoin mixing detection method via subgraph generation of mixing transactions Hyeon-Woo Lee, Eun-Young Park, Sooncheol Kim, Jiyeon Kim p. 139-151
(The) effects of proactive AI agent intervention methods on user experience in social conversation contexts Seong-Yeon Kim, Ju-Hye Ha, Chang-Hoon Oh p. 1-16
From avoidance to approach : LLM agent effects on appraisals and approach motivation Hae-Ryung Lee, Ju-Hye Ha, Chang-Hoon Oh p. 17-29
(An) LLM-based automatic selection of high-difficulty questions using the Swiss tournament format Jooeun Lee, Minseob Song, Namgyu Kim p. 31-42
(A) comparative study on the performance of GPT-4o-mini, Claude 4 Sonnet, and Gemini 2.5 flash models using the prompt runner framework Misun Lee p. 43-50
RAR-agent : a rationale-augmented retrieval framework for legal question answering Gyuhyeong Kim, Yunhyeok Do, Joonhyeon Song, Ziyang Liu p. 51-64
ProbCert : probabilistic certification framework for black-box LLM outputs Jong Wook Kim p. 65-73
(A) novel two-stage attacks on Korean language models : single-token triggers search and morphology-preserving minimal edits Areum Im, Taehwa Lee, Soojin Lee p. 75-85
(A) machine learning–based analysis of short-term surges and listing premiums for newly listed altcoins on Korean exchanges using offshore prices and social signals Eun Hong Park, Yeong-In Lee, Ha Young Kim p. 87-96
Perception gaps between IT managers and developers on generative AI coding : a co-orientation approach Miyoung Bang, Sungkap Park, Hanjin Lee, Dongsu Lee p. 97-110
Empirical analysis of the factors influencing project success in Korean reward-based crowdfunding Changhyun Kim, Sungkap Park, Hanjin Lee p. 111-121
Stable SDF-based collision handling for cloth-solid interaction in position-based dynamics Jong-Hyun Kim p. 123-130
Adaptive digital watermarking based on multi-rendering signals : perceptual quality enhancement through JND model integration Ji-Hoon Kim, Dong-Heon Cho, Seung-Kwan Choi p. 131-138
Development of a UWB-based indoor positioning RTLS system Hoeteak Jung, Seungmin Oh p. 153-159
Design and implementation of a personalized recipe recommendation system based on Jaccard similarity Yeong-Woong Jo, Han-Jun Jung, Yong-Won Jo, Wu-Jin Jang, Kyeong-Sook Han p. 161-171
ERC-7891 : a new protocol design for hierarchical NFTs with splitting and merging Nitin Bhagat, JongWook Bae, Su-Hyun Lee p. 173-181
Task scheduling scheme for maintaining freshness in digital twin systems Taehun Yang, Cheonyong Kim p. 183-189
Analysis of air circulation characteristics in a space-approximate cultivation chamber according to CFD-based intake-exhaust arrangement Hyeon-O Choe p. 191-199
Effects of communication skills, nunchi skills, major satisfaction, and metacognition on clinical practice stress among health-related college students Mi-Ju Yang, Tae-Hee Jang, Jun-Gyo Lee, Min-Hyeok Lee, Yeon-Ji Lee, Jung-Hee Park p. 201-209
(The) effects of dysfunctional beliefs on happiness in nursing students : focusing on the moderating effect of emotional expressiveness Youn-Kyoung Kwag p. 211-218
Intellectual property technology trends in the hanbok Jeogori Su-Joung Cha p. 219-230
(A) comparative analysis of BERTopic and LDA for topic modeling of Korean sleep health discourse on social media JongHwi Song p. 231-239
Do political news affect financial markets? Evidence from exchange rate and investor trading behavior in Korea Jieun Kim, Zoonky Lee, Dojoon Park p. 241-248
Analysis of errors and misconceptions in scratch programming among pre-service elementary teachers Junghee Jo p. 249-257
(A) generative AI-based system for business plan development and investment simulation in startup education Young-Cheon Kim p. 259-267
(The) effects of history classes utilizing physical computing on students’ interest in history and SW Minkuk Cho, Kwihoon Kim p. 269-280

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