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Q-greedyUCB: a New Exploration Policy to Learn Resource-Efficient Scheduling

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China Communications 2021年第6期18卷 12-23页

作者： Yu Zhao joohyun lee Wei Chen Department of Electrical and Electronic Engineering Hanyang UniversityAnsan 15588South Korea Department of Electronic Engineering and Beijing National Research Center for Information Science and Technology the Department of Electronic EngineeringTsinghua National Laboratory for Information Science and Technology(TNList)Tsinghua UniversityBeijing 100084China

This paper proposes a Reinforcement learning(RL)algorithm to find an optimal scheduling policy to minimize the delay for a given energy constraint in communication system where the environments such as traffic arrival rates are not known in advance and can change over *** this purpose,this problem is formulated as an infinite-horizon Constrained Markov Decision Process(CMDP).To handle the constrained optimization problem,we first adopt the Lagrangian relaxation technique to solve ***,we propose a variant of Q-learning,Q-greedyUCB that combinesε-greedy and Upper Confidence Bound(UCB)algorithms to solve this constrained MDP *** mathematically prove that the Q-greedyUCB algorithm converges to an optimal *** results also show that Q-greedyUCB finds an optimal scheduling strategy,and is more efficient than Q-learning withε-greedy,R-learning and the Averagepayoff RL(ARL)algorithm in terms of the cumulative *** also show that our algorithm can learn and adapt to the changes of the environment,so as to obtain an optimal scheduling strategy under a given power constraint for the new environment.

关键词： reinforcement learning for average rewards infinite-horizon Markov decision process upper confidence bound queue scheduling

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东亚社区建设中的韩中日文化合作

东亚社区建设中的韩中日文化合作

作者： lee joohyun 上海外国语大学

学位级别：硕士

本论文旨在调查韩中日三国之间是否存在能够成为东亚文化共同体形成基础的文化同质性。它试图审查学术界、遗产保护、娱乐和教科书编写等各个领域的文化合作的具体实例。预期这些合作努力将表明东亚区域内共同的集体特性。首先,本文旨... 详细信息

本论文旨在调查韩中日三国之间是否存在能够成为东亚文化共同体形成基础的文化同质性。它试图审查学术界、遗产保护、娱乐和教科书编写等各个领域的文化合作的具体实例。预期这些合作努力将表明东亚区域内共同的集体特性。首先,本文旨在分析三国文化合作的努力和成果。它设计查明它们不同的国际利益和关系所造成的限制和挑战。通过理解这些局限性,本文试图提出能够克服国际舞台上不同政治利益所构成的障碍的解决方案。然后,本文还试图提出改革和发展现有东亚合作组织的替代方案和决议。这些拟议的变革旨在加强区域集体特性,减轻外部因素造成的潜在冲突和损害。综上所述,本文旨在探讨韩中日三国文化同质性,以此作为东亚文化共同体的基础。它审查了文化合作的具体实例,分析了不同国际利益造成的限制,并提出了加强东亚内部区域合作和集体特性的解决办法。

关键词：集体身份东盟+3 东亚远景集团文化合作东亚文化共同体

Identification of Arabidopsis MYB56 as a Nove Substrate for CRL3BPM E3 Ligases

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Molecular Plant 2015年第2期8卷 242-250页

作者： Liyuan Chen Anne Bernhardt joohyun lee Hanjo Hellmann School of Biological Sciences Washington State University Abelson 435 Pullman WA 99164-4236 USA Present address: Plant Gene Expression Center UC Berkeley Albany CA 94710 USA present address: Robert Koch Institut 13353 Berlin Germany

Controlled stability of proteins is a highly efficient mechanism to direct diverse processes in living cells. A key regulatory system for protein stability is given by the ubiquitin proteasome pathway, which uses E3 ligases to mark specific proteins for degradation. In this work, MYB56 is identified as a novel target of a CULLIN3 （CUL3）-based E3 ligase. Its stability depends on the presence of MATH-BTB/POZ （BPM） proteins, which function as substrate adaptors to the E3 ligase. Genetic studies have indicated that MYB56 is a negative regulator of flowering, while BPMs positively affect this developmental program. The interaction between BPMs and MYB56 occurs at the promoter of FLOWERING LOCUS T （FT）, a key regulator in initiating flowering in Arabidopsis, and results in instability of MYB56. Overall the work establishes MYB transcription factors as substrates of BPM proteins, and provides novel information on components that participate in controlling flowering time in plants.

关键词： CUL3 BPM MYB transcription factor E3 ligase flowering

Longitudinal Structural Equation Modeling of Internet Game and Aggression in Children

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Open Journal of Nursing 2015年第5期5卷 426-436页

作者： joohyun lee Kyung Sook Choi College of Nursing Eulji University Seongnam South Korea Red Cross College of Nursing Chung Ang University Seoul South Korea

This study aimed to identify the effects of Internet game on levels of aggression in children in the context of individual, familial, and social environments. The subjects were 2844 fourth graders participated in the Korean Youth Panel Survey between 2004 and 2008. Internet game use, the levels of aggression, self-esteem, self-control, stress, depression, attachment to parents, parental control, attachment to teachers, and attachment to peers were measured by 5-point Likert scales. The result showed that gender was the most effective factor influencing the initial level of, the rate of changes, an increase or decrease in the rate of changes in Internet game use and levels of aggression. Boys showed higher levels of Internet game use and aggression than girls. Children with higher self-esteem, self-control and lower stress and depression showed lower levels of Internet game use and aggression. The levels of Internet game use at fourth grade was positively correlated with later increase in the levels of aggression. Also, the faster increase in Internet game use caused faster increase in the levels of aggression later. Based on the results, preventive measures such as limiting the opportunities to access Internet games might be worth to decrease the aggressive behaviors among children.

关键词： Internet Game Aggression Children

Efficacy of Alternative Service Quality Measures to Predict Satisfaction and Future Intention

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Journal of Tourism and Hospitality Management 2022年第2期10卷 64-73页

作者： joohyun lee Eastern Mennonite University HarrisonburgUSA

Purpose:This research focuses on comparing various service quality measures including disconfirmation measures(performance-minus-importance and performance-minus-expectation),performance-only measure,and importance-weighted measures(importance-weighted performance-only and importance-weighted disconfirmation)in a festival *** also explores the relationship between the constructs of service quality and other variables including visitors’perceptions of overall service quality,overall satisfaction,and future ***,convergent validity,discriminant validity,and predictive validity of five service quality measures are tested and *** result shows that the importance-weighted performance-only measure exhibits the highest reliability and validity.

关键词： service quality measures overall quality overall satisfaction future intention

The effects of EMLA cream on pain responses of preschoolers

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Open Journal of Nursing 2013年第8期3卷 1-4页

作者： Se Na Ahn joohyun lee Hae Won Kim Sook Bin Im Byung Sun Cho Hye Young Ahn College of Nursing Eulji University Daejeon South Korea Department of Nursing Eulji University Hospital Daejeon South Korea Department. of Surgery College of Medicine Eulji University Daejeon South Korea The Research Institute of Nursing Science College of Nursing Seoul National University Seoul South Korea

The aim of present study was to assess the effects of a eutectic mixture of topical anesthetics (EMLA cream) on pain responses of preschoolers during venipuncture. The pain responses were reported by children, nurses, and the children’s mothers. The pre- and post-test-designed study, which included a non-equivalent control group, was carried out in a pediatric unit at E University Hospital in South Korea. Pain responses during venipuncture were measured by the self-reporting of the children using the Face Pain Rating Scale (FPRS), the Procedure Behavior Checklist by nurses (PBCL), the Visual Analog Scale (VAS) by mothers, in addition to measurements of the children’s pulse rate and level of oxygen saturation. EMLA cream was effective in decreasing the pain responses of the children as assessed by FPRS, PBCL, and VAS scores. However, pulse rate and level of oxygen saturation of the children during venipuncture were not significantly different between the two groups. EMLA cream could be a useful option for reducing pain in preschool children during invasive procedures.

关键词： Venipuncture EMLA Cream Pain Preschooler

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高速DVD系统的差错控制方法

记录媒体技术 2006年第Z3期 40-44页

作者： joohyun lee Jaejin lee 王永瑞

We present a powerful error control decoder which can be used in all of the commercial DVD *** decoder exploits the error information from the modulation decoder in order to increase the error correcting *** can identify that the modulation decoder in DVD system can detect errors more than 60% of total errors when burst errors are *** results,for a decoded block,error correcting capability of the proposed scheme is improved up to 25% more than that of the original error control ***,a pipeline-balanced RSPC decoder with a low hardware complexity is designed to maximize the throughput.

关键词：突发错误差错控制 DVD 纠错编码调制编码随机错误纠错能力存储容量盘片线性分组码

Risk factor for ischemic-type biliary lesion after ABO-incompatible living donor liver transplantation

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World Journal of Gastroenterology 2016年第30期22卷 6925-6935页

作者： Jun Bae Bang Bong-Wan Kim Young Bae Kim Hee-Jung Wang Hyun Yeong lee joohyun Sim Taegyu Kim Kyeong Lok lee Xu-Guang Hu Wei Mao Department of Liver Transplantation and Hepatobiliary Surgery Ajou University School of Medicine Department of Pathology Ajou University School of Medicine Department of Biostatistics Ajou University School of Medicine

AIM: To evaluate the risk factors for ischemic-type biliary lesion(ITBL) after ABO-incompatible(ABO-I) adult living donor liver transplantation(ALDLT).METHODS: Among 141 ALDLTs performed in our hospital between 2008 and 2014, 27(19%) were ABO-I ALDLT and 114 were ABO-identical/compatible ALDLT. In this study, we extensively analyzed the clinico-pathological data of the 27 ABO-I recipients to determine the risk factors for ITBL after ABO-I ALDLT. All ABO-I ALDLT recipients underwent an identical B-cell depletion protocol with preoperative rituximab, plasma exchange(PE), and operative splenectomy. The median follow-up period after transplantation was 26 mo. The clinical outcomes of the 27 ABO-I ALDLT recipients were compared with those of 114 ABO-identical/compatible ALDLT ***: ITBL occurred in four recipients(14.8%) between 45 and 112 d after ABO-I ALDLT. The overall survival rates were not different between ABO-I ALDLT and ABO-identical/compatible ALDLT(P = 0.303). Among the ABO-I ALDLT recipients, there was no difference between patients with ITBL and those without ITBL in terms of B-cell and T-cell count, serum isoagglutinin titers, number of PEs, operative time and transfusion, use of graft infusion therapy, or number of remnant B-cell follicles and plasma cells in the spleen. However, the perioperative NK cell counts in the blood of patients with ITBL were significantly higher than those in the patients without ITBL(P 150/μL and postoperative NK cell count > 120/μL were associated with greater relative risks(RR) for development of ITBL(RR = 20 and 14.3, respectively, P < 0.05). CONCLUSION: High NK cell counts in a transplant recipient's blood are associated with ITBL after ABO-I ALDLT. Further research is needed to elucidate the molecular mechanism of NK cell involvement in the development of ITBL.

关键词： Liver transplantation ABO-incompatibility Ischemic-type biliary lesion Natural killer cell