• 제목/요약/키워드: second order self dual

검색결과 9건 처리시간 0.03초

NONDIFFERENTIABLE SECOND ORDER SELF AND SYMMETRIC DUAL MULTIOBJECTIVE PROGRAMS

  • Husain, I.;Ahmed, A.;Masoodi, Mashoob
    • Journal of applied mathematics & informatics
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    • 제26권3_4호
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    • pp.549-561
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    • 2008
  • In this paper, we construct a pair of Wolfe type second order symmetric dual problems, in which each component of the objective function contains support function and is, therefore, nondifferentiable. For this problem, we validate weak, strong and converse duality theorems under bonvexity - boncavity assumptions. A second order self duality theorem is also proved under additional appropriate conditions.

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NONDIFFERENTIABLE SECOND-ORDER MINIMAX MIXED INTEGER SYMMETRIC DUALITY

  • Gulati, Tilak Raj;Gupta, Shiv Kumar
    • 대한수학회지
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    • 제48권1호
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    • pp.13-21
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    • 2011
  • In this paper, a pair of Wolfe type nondifferentiable sec-ond order symmetric minimax mixed integer dual problems is formu-lated. Symmetric and self-duality theorems are established under $\eta_1$-bonvexity/$\eta_2$-boncavity assumptions. Several known results are obtained as special cases. Examples of such primal and dual problems are also given.

영유아교사의 성인애착이 자기자비에 미치는 영향: 정서의 병렬이중매개효과 (The Influence of Adult Attachment on Self-compassion of Teachers in Early Childhood Education and Care: Examining the Parallel Dual Mediating Effects of Positive and Negative Affects)

  • 안혜령;채진영
    • 한국보육지원학회지
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    • 제16권6호
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    • pp.203-232
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    • 2020
  • Objective: The purpose of this study was to examine the parallel dual mediating effects of positive and negative affects in the relationship between adult attachment and self-compassion of teachers in the early childhood education and care centers. Methods: Two hundred and six teachers participated in the survey who were recruited from kindergarten and child care centers in Seoul and five provinces in South Korea. The data were analyzed by means of frequency, percentages, Cronbach's reliability coefficient and Pearson's correlation using SPSS 25.0 and model 4 provided in The PROCESS macro for SPSS 3.4 version. Results: First, the teachers' degrees of anxiety and avoidance in their adult attachment were below the median scores. Those of positive and negative affects, and their self-compassion were close to the median scores. Second, there were parallel dual mediation effects of positive and negative affects between anxious attachment and self-compassion of teachers. Meanwhile, only positive affect had a mediating effect in the path of teachers' avoidant attachment and self-compassion. Conclusion/Implications: This study confirmed that it is important to raise positive affect by lowering each level of anxiety and avoidance in their attachment for teachers in order to improve their self-compassion. It implied the need to provide support for attachment stability enhancement and to pay attention to improve their self-compassion.

다문화가정 청소년자녀의 공적개발원조 (Official Development Assistance: ODA) 인력 양성을 위한 탐색적 연구 (Exploratory Study of the Potential for Adolescent Children from Multi-Cultural Families to Be Trained as Competent Personnel in Charge of ODA)

  • 박미석;김경아
    • 가족자원경영과 정책
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    • 제20권3호
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    • pp.95-113
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    • 2016
  • This study investigates the potential for multi-cultural youths, given their innate bilingual and dual culture, to be trained as the competent ODA professionals. For the purpose of collecting information, we organized two different kinds of FGI in 2015. The first FGI was conducted with a group of 10 expert participants from August 17 to September 25. The second FGI was conducted four times, from October 5 to October 23, with 13 adolescents from multi-cultural families from Russia, Mongolia, Vietnam, India, Indonesia, Japan, and China. The semi-structured interview items were passed through a formal review process of the Institutional Ethics Committee. Furthermore, with the participants' pre-consent to recording, all recorded data were categorized through the transcription process. The results are as follows. While the potential for nourishing bilingual and dual cultural capabilities are high for the adolescent children of multi-cultural families, the expert group also emphasized the negative aspects of these capabilities being suppressed due to the relatively oppressed family environment. The expert group therefore suggests the following: building parent awareness of ODA human resources, developing an educational career transition roadmap, and providing institutional incentives for ODA. In addition, to some extent, the researchers were able to detect some positive self-esteem among the adolescent children of multi-cultural families as a result of the bilingual and dual cultural competencies required to be ODA personnel. In sum, the research provides insight into the need for national social support for the adolescent children of multi-cultural families, so that their strengths are not extinguished, in order that they might grow up as competent ODA personnel.

An Evaluation of Multiple-input Dual-output Run-to-Run Control Scheme for Semiconductor Manufacturing

  • Fan, Shu-Kai-S.;Lin, Yen
    • Industrial Engineering and Management Systems
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    • 제4권1호
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    • pp.54-67
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    • 2005
  • This paper provides an evaluation of an optimization-based, multiple-input double-output (MIDO) run-to-run (R2R) control scheme for general semiconductor manufacturing processes. The controller in this research, termed adaptive dual response optimizing controller (ADROC), can serve as a process optimizer as well as a recipe regulator between consecutive runs of wafer fabrication. In evaluation, it is assumed that the equipment model could be appropriately described by a pair of second-order polynomial functions in terms of a set of controllable variables. Of practical relevance is to consider a drifting effect in the equipment model since in common semiconductor practice the process tends to drift due to machine aging and tool wearing. We select a typical application of R2R control to chemical mechanical planarization (CMP) in semiconductor manufacturing in this evaluation, and there are five different CMP process scenarios demonstrated, including mean shift, variance increase, and IMA disturbances. For the controller, ADROC, an on-line estimation technique is implemented in a self-tuning (ST) control manner for the adaptation purpose. Subsequently, an ad hoc global optimization algorithm based on the dual response approach, arising from the response surface methodology (RSM) literature, is used to seek the optimum recipe within the acceptability region for the execution of next run. The main components of ADROC are described and its control performance is assessed. It reveals from the evaluation that ADROC can provide excellent control actions for the MIDO R2R situations even though the process exhibits complicated, nonlinear interaction effects between control variables, and the drifting disturbances.

거리노숙인의 유대 형성에 대한 문화기술지: 삭막한 세계의 동맹자 만들기 (Ethno-graphic Research on the Bonding of Street Homeless : Making Alliance of Rough World)

  • 김진미;서정화
    • 한국사회복지학
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    • 제58권3호
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    • pp.51-79
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    • 2006
  • 이 연구는 거리노숙인의 사회적 관계 중 노숙동료 관계를 중심으로 이들의 유대가 어떻게 형성되는지와 그 의미를 탐색하였다. 이를 위해 질적 연구방법 중 문화기술지 연구전통을 따라 연구를 수행하였는데, 2005년 8월부터 약 6개월 동안 서울지역 주요 노숙지역과 일일이용시설의 노숙실태를 현장 조사하고, 노숙인 8명을 심층 인터뷰하여 자료를 수집했다. 스프래들리(Spradley, 1979)의 자료 분석절차에 따라 노숙인의 유대형성과 관련된 주요 영역을 확인하였는데, 이 영역들은 새롭게 노숙세계라는 낯선 시 공간에 떨어진 노숙인이 생존과 정체성의 위기를 노숙 동료와의 긴밀한 관계 형성을 통해 모면해 가는 과정을 보여 준다. 이러한 분석을 통해 거리노숙이라는 문화 속에서 노숙인들끼리의 유대는 (1) 새로운 고향의 의미, (2) 인정받기 위한 대체집단의 의미, (3) 세계 내 구별을 통한 자기 정체감 유지의 의미라는 주제를 갖는다는 것을 확인하였다. 이에 따르면 노숙인들의 자기 정체성은 이중적이고, 따라서 동료관계에 부여하는 의미와 해석 또한 이중성을 갖는다. 이는 노숙이라는 극단적 빈곤상태의 삭막한 세계에서 생존과 자기 존재감을 위한 동맹자원을 획득하는 과정에서 나타난 태도라고 할 수 있다. 이에 노숙인들이 생존 자원의 결핍은 물론 진정한 관계의 결핍을 갖고 있음을 밝히면서, 거리노숙 탈피를 위한 노숙인 지원 대책과 서비스가 보다 장기적 계획을 갖고, 질적으로 이루어져야함을 제언하고 있다.

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이중점화기법을 통해 본 남녀 대학생의 '성공/실패'에 대한 암묵적 표상 (A Study of College students' implicit representations of 'success/failure' by dual-priming task)

  • 조혜자 ;방희정 ;조숙자 ;김현정
    • 한국심리학회지 : 문화 및 사회문제
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    • 제14권1호
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    • pp.101-123
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    • 2008
  • 본 연구는 남녀 대학생을 대상으로, 어머니와 연합된 성공/실패에 대한 표상을 알아보기 위해 시도되었다. 이를 위해 연구 1에서는 어머니/바구니와 성공/실패를 이중점화자극으로 100ms 동안 제시하고 난 뒤, 150ms 후(SOA 250ms)에 수용/거부와 관련된 목표자극(probe)을 제시하고 어의판단에 걸리는 시간을 측정하였다. 그 결과, 어머니조건의 반응이 통제조건보다 빨랐으며, 수용에 대한 반응이 거부 반응보다 빨랐고, 여자집단의 반응이 남자보다 빨랐다. 연구 2에서는 남녀별로 애착 고집단과 저집단을 나누어, 어머니와 성공/실패를 이중점화시킨 뒤 수용/거부에 대한 어의판단 시간을 측정하였다. 그 결과, 성공/실패와 수용/거부 간에 상호작용이 나타나, 성공-수용에 대한 반응은 가장 빨랐고, 실패-수용, 실패-거부, 성공-거부의 순으로 반응이 느려졌다. 한편 남자집단에서는 애착고저 집단 간에 유의미한 차이가 없고 상호작용도 나타나지 않았지만, 여자집단에서는 3원 상호작용이 나타났다. 즉 여자 애착 고집단에서는 성공-수용, 성공-거부에 대한 반응차이가 크지 않았고, 실패-거부에 대한 반응이 매우 느렸으나, 여자 애착 저집단에서는 성공-수용은 매우 빠른데 비해 성공-거부는 매우 느렸다. 이러한 결과는 자기 긍정성 및 성별, 애착유형에 따라 다른 성공/실패 도식과 관련하여 논의되었다.

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코로나19 공중보건 위기 상황에서의 자유권 제한에 대한 '해악의 원리'의 적용과 확장 - 2020년 3월 개정 「감염병의 예방 및 관리에 관한 법률」을 중심으로 - (Application and Expansion of the Harm Principle to the Restrictions of Liberty in the COVID-19 Public Health Crisis: Focusing on the Revised Bill of the March 2020 「Infectious Disease Control and Prevention Act」)

  • 유기훈;김도균;김옥주
    • 의료법학
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    • 제21권2호
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    • pp.105-162
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    • 2020
  • 감염병의 팬데믹 상황 속에서, 국가의 방역 대책은 안보로서의 속성을 지니며, 공중보건과 공공의 이익의 이름으로 개인의 자유에 대한 일정한 제한이 정당화되어왔다. 2020년 3월, 대한민국 국회는 「감염병의 예방 및 관리에 관한 법률」 개정안을 통과시켰으며, 이를 통해 '감염의심자'의 검사 및 격리거부에 대한 처벌의 법적 근거를 신설하고 격리위반과 치료거부의 벌칙을 상향하였다. 본 논문에서는 국가가 개인의 자유를 제한하는 행위의 정당성 판별기준에 대한 자유주의 법철학의 논변과 원리들을 검토하고, 피해자임과 동시에 매개체로서의 속성을 지니는 감염병 환자(patient as victim and vector)에 대한 자유제한원리의 적용은 파인버그(Joel Feinberg)가 제시한 '스스로에 대한 해악(harm to self)'과 '타인에 대한 해악(harm to others)'이 중첩되는 지점에 있음을 개념화하였다. 파인버그가 제기한 자유제한원리(liberty-limiting principle)를 불확실성(uncertainty)을 지니는 팬데믹 상황에 적용하기 위해서는, 해악에서 리스크(risk)로 해악의 원리를 확장시킬 것이 요구된다. 이러한 해악에서 리스크로의 전환은, 불확실한 위기상황 하에서 국가가 사전주의 원칙(precautionary principle)을 통해 개인의 자유를 사전적으로 제한하는 것을 정당화함과 동시에, 충분한 근거 없이 개인의 행위를 처벌의 대상으로 삼는 과잉범죄화(overcriminalization)의 우려를 낳는다. 본 글에서는 리스크를 지닌 개인에 대한 사전적 자유제한을 둘러싼 사전주의의 원칙과 과잉범죄화의 우려 사이에서 균형을 이룰 수 있는 원칙들을 검토한다. 이어서 '타인에 대한 해악' 원칙이 공익과 공중보건 상황에 적용되기 위한 두 번째 확장으로, 인구집단 개념으로의 전환을 다룬다. 팬데믹과 같은 공중보건 위기 상황에서는 '개인'이 아닌 '인구집단'을 하나의 단위로 고려하는 인구집단 접근법(population approach)이 필요하며, 나아가 앞선 두 논의를 결합한 '인구집단에 대한 리스크(risk to population)'가 팬데믹 상황에서 해악의 원리의 중요한 구성요소로 고려되어야 함을 제안한다. 논문의 마지막에서는, 앞서 개념화한 '확장된 해악의 원리' 하에서 개정 「감염병의 예방 및 관리에 관한 법률」의 자유제한이 정당화될 수 있는지 검토한다. 격리위반 처벌조항은 '인구집단에 대한 리스크'에 대한 자유제한에 해당하여, 강제검사 또한 무증상 감염자라는 감염병의 특성에 의거하여 '확장된 해악의 원리'의 차원에서는 정당성이 부정되지 않음을 보일 수 있었다. 그러나 치료거부 처벌조항은 전통적 해악의 원리뿐만 아니라 '인구집단에 대한 리스크'라는 팬데믹의 특성을 고려한 '확장된 해악의 원리' 하에서도 정당화되기 어려우며, 추가적 단서조항을 포함하여야만 정당화 근거를 획득할 수 있을 것임을 논증하였다.

정보시스템의 지속적 사용에서 경험의 역할에 대한 분석 (An Analysis of the Roles of Experience in Information System Continuance)

  • 이웅규
    • Asia pacific journal of information systems
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    • 제21권4호
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    • pp.45-62
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    • 2011
  • The notion of information systems (IS) continuance has recently emerged as one of the most important research issues in the field of IS. A great deal of research has been conducted thus far on the basis of theories adapted from various disciplines including consumer behaviors and social psychology, in addition to theories regarding information technology (IT) acceptance. This previous body of knowledge provides a robust research framework that can already account for the determination of IS continuance; however, this research points to other, thus-far-unelucidated determinant factors such as habit, which were not included in traditional IT acceptance frameworks, and also re-emphasizes the importance of emotion-related constructs such as satisfaction in addition to conscious intention with rational beliefs such as usefulness. Experiences should also be considered one of the most important factors determining the characteristics of information system (IS) continuance and the features distinct from those determining IS acceptance, because more experienced users may have more opportunities for IS use, which would allow them more frequent use than would be available to less experienced or non-experienced users. Interestingly, experience has dual features that may contradictorily influence IS use. On one hand, attitudes predicated on direct experience have been shown to predict behavior better than attitudes from indirect experience or without experience; as more information is available, direct experience may render IS use a more salient behavior, and may also make IS use more accessible via memory. Therefore, experience may serve to intensify the relationship between IS use and conscious intention with evaluations, On the other hand, experience may culminate in the formation of habits: greater experience may also imply more frequent performance of the behavior, which may lead to the formation of habits, Hence, like experience, users' activation of an IS may be more dependent on habit-that is, unconscious automatic use without deliberation regarding the IS-and less dependent on conscious intentions, Furthermore, experiences can provide basic information necessary for satisfaction with the use of a specific IS, thus spurring the formation of both conscious intentions and unconscious habits, Whereas IT adoption Is a one-time decision, IS continuance may be a series of users' decisions and evaluations based on satisfaction with IS use. Moreover. habits also cannot be formed without satisfaction, even when a behavior is carried out repeatedly. Thus, experiences also play a critical role in satisfaction, as satisfaction is the consequence of direct experiences of actual behaviors. In particular, emotional experiences such as enjoyment can become as influential on IS use as are utilitarian experiences such as usefulness; this is especially true in light of the modern increase in membership-based hedonic systems - including online games, web-based social network services (SNS), blogs, and portals-all of which attempt to provide users with self-fulfilling value. Therefore, in order to understand more clearly the role of experiences in IS continuance, analysis must be conducted under a research framework that includes intentions, habits, and satisfaction, as experience may not only have duration-based moderating effects on the relationship between both intention and habit and the activation of IS use, but may also have content-based positive effects on satisfaction. This is consistent with the basic assumptions regarding the determining factors in IS continuance as suggested by Oritz de Guinea and Markus: consciousness, emotion, and habit. The principal objective of this study was to explore and assess the effects of experiences in IS continuance, with special consideration given to conscious intentions and unconscious habits, as well as satisfaction. IN service of this goal, along with a review of the relevant literature regarding the effects of experiences and habit on continuous IS use, this study suggested a research model that represents the roles of experience: its moderating role in the relationships of IS continuance with both conscious intention and unconscious habit, and its antecedent role in the development of satisfaction. For the validation of this research model. Korean university student users of 'Cyworld', one of the most influential social network services in South Korea, were surveyed, and the data were analyzed via partial least square (PLS) analysis to assess the implications of this study. In result most hypotheses in our research model were statistically supported with the exception of one. Although one hypothesis was not supported, the study's findings provide us with some important implications. First the role of experience in IS continuance differs from its role in IS acceptance. Second, the use of IS was explained by the dynamic balance between habit and intention. Third, the importance of satisfaction was confirmed from the perspective of IS continuance with experience.