• Title/Summary/Keyword: 회복과정

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A Study on the Recovery of Radiation Hardening of PWR Pessure Vessel Steel Using Michrohardness and Positron Annihilation (미세경도와 양전자 소멸을 이용한 PWR 압력용기강의 조사 경화 회복에 관한 연구)

  • Garl, Seong-Je;Yoon, Young-Ku;Park, Soon-Pil;Park, Yong-Ki
    • Nuclear Engineering and Technology
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    • v.22 no.4
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    • pp.337-350
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    • 1990
  • A post-irradiation annealing study was conducted with use of reactor pressure vessel(RPV) steel A533B Cl.1 base metal irradiated to a dose of 4.84$\times$10$^{18}$ n/$\textrm{cm}^2$ at about 38$0^{\circ}C$. Microhardness and positron annihilation (PA) methods were used to obtain better understanding of the recovery of radiation hardening. Isochronal anneal experiments indicated that two recovery processes occur during annealing of irradiated specimens. The first recovery process occurs in the temperature range of 280-3O5$^{\circ}C$, Michrohardness and positron annihilation (PA) methods were used to obtain better understanding of the recovery of radiation hardening. Isochronal anneal experiments indicated that two recovery processes occur during annealing of irradiated specimens. The first recovery process occurrs in the temperature range of 280-305$^{\circ}C$. The variations of Ip, Iw and R parameters indicated that the formation of vacancy clusters by vacancy agglomeration and the annihilation of monovacancies are the first recovery process. The second recovery process occurs in the range of 405-49$0^{\circ}C$ and positron annihilation parameters measured indicated that the dissolution of carbon atoms decorated around vacancy-type defects and possible precipitates, and the annihilation of monovacancies give rise to the second recovery process. It was further indicated that radiation anneal hardening (RAH) in the range of 305-405$^{\circ}C$ between the temperature ranges for the two processes occurs due to the formation of carbon-decorated vacancy clusters and precipitates. The activation energies, orders of reaction and other characteristics of recovery processes were determined by the Meechan-Brinkman method. The activation energy for the first recovery process was determined as 1.76 eV and that for the second recovery process as 2.00eV. These values are lower than those obtained by other workers. This difference may be attributed to the lower copper content of the RPV steel used in the present study. The order of reaction for the first recovery process was determined as 1.78, while that for the second recovery process as 1.67 Non-integer orders of reaction for recovery processes seem to be attributed to the fact that several mechanisms for the first order and the second order of reaction are compounded in one process. This result also supports for the above conclusions from measurements of PA parameters.

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An Efficient Recovey Algorithm for Optimistic Message Logging Based on Causal Order of Message Delivery (인과적 메시지 전달 순서를 기반한 낙관적 메시지 로깅 기법을 위한 효율적 회복 알고리즘)

  • 백맹순;김기범;안진호;황종선
    • Proceedings of the Korean Information Science Society Conference
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    • 2000.10a
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    • pp.566-568
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    • 2000
  • 급격한 통신의 발달은 분산시스템의 메시지 전달 환경을 FIFO 뿐만 아니라, 인과적 순서로도 가능케 한다. 낙관적 메시지 로깅 기법은 프로세스의 결함을 저비용으로 회복할 수 있다. 기존의 낙관적 메시지 로깅기법은 인과적 메시기 전달 순서를 보장해주는 환경에 적용되었을 때, 회복과정시 각 프로세스가 전체 프로세스에게 회복메시지를 브로드캐스팅함으로써 불필요한 오버헤드를 가진다. 그러나 제안하는 알고리즘은 회복과정을 시작하고 종료하는 시점에서 조정자 프로세스만 전체 프로세스에게 회복메시지를 브로드캐스팅함으로써 이러한 오버헤드를 줄일 수 있다. 즉, 조정자 프로세스가 아닌 프로세스는 정상수행시 유지하고 있는 상태정보에 기반하여 자신과 의존성이 존재하는 프로세스에게만 회복메시지를 선택적으로 멀티캐스팅함으로써 회복과정시 필요한 메시지의 수를 줄이고 전체적인 회복비용을 감소시킨다.

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The moderating effect of 'Jung' in service recovery process (서비스 실패 후 회복과정에서 정(情)의 조절 역할)

  • Kim, Youn Hwan
    • Management & Information Systems Review
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    • v.33 no.3
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    • pp.59-76
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    • 2014
  • This research tries to present the role of Jung, which is well known as Koreans' traditional emotional attachment in service recovery process. Prior research on the service recovery have focused on relationship among perceived justice, recovery satisfaction and forgiveness. Especially perceived justice including distributive, procedural, and interactional justice has addressed as most important antecedents of recovery satisfaction. Although the pivotal role of emotional factors for successful service recovery has agreed by many researchers, relatively little attention has been paid to this issue. During the service recovery process, even if customer perceived recovery effort from service provider as justice one, they might feel displeasure or dissatisfaction. It means prior researches have underestimated the importance of emotional aspect, especially for Korean perspectives. In this study, we examined customer reactions to service failure and recovery process in restaurant service settings. Specifically, we focused on the moderating effect of 'Jung' on the paths between perceived justice and outcome variables such as forgiveness and recovery satisfaction.

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A Qualitative Research on the Experience and Recovery Process of the Korean Depression (우울증 경험과 회복과정에 대한 질적 연구)

  • Joo, Eunsun;Cho, Young-Im;Kim, Dan-Bi;Kang, Yu-Jin
    • The Journal of the Korea Contents Association
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    • v.17 no.7
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    • pp.505-526
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    • 2017
  • This study explored and described the depression of Koreans for the true nature of the experience and recovery process. The sample included 13 men and women between 18 and 69 who experienced and recovered from depression. Participants attended interviews producing data, which was analyzed using Consensual Qualitative Research(CQR) method. The result yielded 4 domains, the life before depression, the experience of depression, the recovering process of depression, after the recovery of depression.

The Study of Recovering trust and Rebuilding Loyalty on Applications services in SmartPhone: Focusing on Service Type (스마트폰 앱에서 서비스 유형에 따른 신뢰 회복 및 로열티 재구축에 대한 연구)

  • Choi, Hun;Choi, Yoo-Jung
    • Management & Information Systems Review
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    • v.33 no.1
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    • pp.65-81
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    • 2014
  • Although the study of IT services has increased in recent years, few study have focused on trust based recovery process. Additionally, users of IT services have different use purpose depending on service type. Therefore, the purposes of this research is to propose trust recovery model of smartphone applications and to examine the moderating effect of service type on the use of smartphone applications. To achieve research purposes, we suggested service failure type using the scenario technique and empirically verified by conducting survey. The results showed that the procedural justice and interpersonal justice have influence on trust and trust had an effect on the all quality factors (system, information, service quality). Also, information quality and service quality had an effect on the customer loyalty. Finally, service type had significant moderating effects on the relationship between perceived justice and quality.

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Recovering Process from Gambling Addiction (도박중독자의 회복과정 : 수렁에서 빠져나오기)

  • Yoon, Myeong-Sook;Chae, Wan-Soon
    • Korean Journal of Social Welfare
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    • v.62 no.3
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    • pp.271-297
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    • 2010
  • The purpose of this study was to develop the entity theory on the recovering process from gambling addiction. This study focused on "What is the process of getting out of the pit of gambling addiction?" based on grounded theory methodology suggested by Strauss and Corbin(1990). The subjects of this study were 7 male gambling addicts living in Jeonbuk area. As the result of this study, a total of 97 concepts were drawn, which were classified into 28 subcategories and 16 superordinate categories. The results of analyzing the categories by paradigm showed that in the process of overcoming gambling addiction, the casual condition was 'Being cut off money; 'Losing the will', and the contextual condition corresponding to this phenomenon was 'Shame', 'Repent', and 'Wanting to die'. The core phenomenon was 'Giving up the dream of hitting the jackpot'. The intervening condition to boost this core phenomenon was 'Being helped by friends', 'Being supported by the police', 'Being led by the family', and 'Showing the willpower'. The action/interaction strategies were identified as 'Cutting off the flow of funds', 'Overcoming the temptation of gambling', and 'Diverting attention to other things', ending up 'Being conscious of family', 'Growing up', and 'Being free'. The core concept in the process of overcoming the gambling addiction was revealed as 'Being free by giving up the dream of hitting the jackpot'. The process of getting over the gambling addiction was 'The dream of hitting the jackpot being shattered', 'Giving up the dream of hitting the jackpot', 'Getting out of it', and 'Being free'. The study participants were classified into four types; 'Challenging type', 'Enjoying type', 'Showing off type', and 'Obsessive type'. This study was expected to have significance in establishing the first theory in Korea on the recovering process of gambling addict.

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Efficient POLUG Recovery Method in Main Memory Databases System (주기억 장치 데이터베이스 시스템에서 효율적인 POLUG 회복 기법)

  • 김명근;조숙경;정광철;이순조;배해영
    • Proceedings of the Korean Information Science Society Conference
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    • 2000.04b
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    • pp.190-192
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    • 2000
  • MMDBMS(Main Memory Database Management System)에서 사용되는 갱신기법중 퍼지 검사점을 지원하는 직접갱신 기법은 많은 양의 로그를 필요로 하며 회복 과정이 복잡하다는 단점이 있다. 본 논문에서는 퍼지 검사점을 지원하면서 저장해야 할 로그의 양을 줄이고 회복 과정이 단순한 회복 기법을 제안한다. 제안하는 회복 기법은 로그의 양을 줄이고 위해 철회된 트랜잭션의 로그를 비휘발성 메모리에 저장하지 않는 시스템 구조와 많은 양의 메모리를 사용하지 않는 POLUG(Page Oritented Logical Undo loG)를 사용하여 퍼지 검사점을 지원할 수 있는 장점을 가진다.

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A Study on the Effects of Customers' Roles in the Service Recovery Process (서비스 실패와 회복과정에서 고객의 역할에 관한 연구)

  • Lee, Choong-Ryul;Ahn, Jinwoo
    • Management & Information Systems Review
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    • v.33 no.3
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    • pp.105-128
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    • 2014
  • This study attempted to examine the role of customers in service recovery process. There have been an argument regarding whether the role of customer in service failure situation 'buffer' or 'deteriorate'. Thus, the role of customer such as relationship quality and customer participation was discussed in this research. According to the result of study, (1) customers' perceived recovery have positive effect on positive emotion significantly. (2) customers' perceived distributional justice and interactional justice positively affected encounter satisfaction in the of recovery justice variable. However, whereas procedure justice has no effect on encounter satisfaction directly, there was indirect effect through customers' positive emotion. (3) As a result of the analysis for the effect of perception of recovery justice on recovery satisfaction, the effect of interactional justice was significant only. Distributional and procedural justice have indirect effect on recovery satisfaction through positive emotion or encounter satisfaction. (4) Customers' positive emotion positively affected encounter satisfaction and recovery satisfaction. (5) Relationship quality negatively moderated the relationship between procedural justice and positive emotion while customer participation positively moderated two paths that distributional justice to encounter satisfaction and interactional justice to recovery satisfaction.

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A Empirical Study on the Trust Recovery and Recovering Loyalty in Smartpone Applications Usages according to Service Type (스마트폰 앱에서 서비스 유형에 따른 신뢰 회복 및 로열티 재구축에 대한 연구)

  • Choi, Hun
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.05a
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    • pp.167-169
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    • 2013
  • The purposes of this research is to propose trust recovery model of smartphone applications and to examine the moderating effect of service type on the use of smartphone applications. To achieve research purposes, we suggested service failure type using the scenario technique and empirically verified by conducting survey. The results showed that the procedural justice and interpersonal justice have influence on trust and trust had an effect on the all quality factors (system, information, service quality). Also, information quality and service quality had an effect on the customer loyalty. Finally, service type had significant moderating effects on the relationship between perceived justice and quality.

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The Experiences of Gambling Abstinences' Sense Recovery (단도박자의 감각 회복 체험)

  • Kang, Jun Hyeok;Lee, Hyuk Koo
    • Korean Journal of Social Welfare Studies
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    • v.47 no.4
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    • pp.121-150
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    • 2016
  • This study is to examine how a person's sense is changing in the process of gambling addiction and recovery. For this purpose, the ten of gambling abstinences were purposefully selected for intensive depth interviews. The data collected by thess interviews were analysed by Giorgi's(1970; 1985) phenomenological method. Meaningful units were categorized into 18 'emerging themes', and integrated by the total of 6 'essential themes' considering the interrelations of the emerging themes. Major findings of the study are as follows. Firstly, participants of this study lost their general senses in the addiction process by focusing on specific senses such as seeing and hearing. Secondly, participants have begun to regain the lost senses in the process of recovery, even though going through the 'pains of withdrawal'. Thirdly, the participants' experiences of recovery could be summarized as 'a recovery process of the general senses lost by gambling'. Based upon these findings, some suggestions for helping practice were proposed such as 'provision of informations about senses', 'program development of sense stimulation', and 'application of sense recovery training'.