• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제28권1호
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• pp.1-21
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• 2024

This review comprehensively explores the evolution, theoretical underpinnings, variations, and applications of diffusion models. Originating as a generative framework, diffusion models have rapidly ascended to the forefront of machine learning research, owing to their exceptional capability, stability, and versatility. We dissect the core principles driving diffusion processes, elucidating their mathematical foundations and the mechanisms by which they iteratively refine noise into structured data. We highlight pivotal advancements and the integration of auxiliary techniques that have significantly enhanced their efficiency and stability. Variants such as bridges that broaden the applicability of diffusion models to wider domains are introduced. We put special emphasis on the ability of diffusion models as a crucial foundation model, with modalities ranging from image, 3D assets, and video. The role of diffusion models as a general foundation model leads to its versatility in many of the downstream tasks such as solving inverse problems and image editing. Through this review, we aim to provide a thorough and accessible compendium for both newcomers and seasoned researchers in the field.

• 토지주택연구
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• 제5권2호
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• pp.69-79
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• 2014

본 연구는 주거환경개선사업의 원주민 재정착보다 포괄적인 사업의 공공성 측면인 주거안정에 초점을 둔 것으로, 주거환경개선사업이 사업 전 후시점의 거주자(지구거주자, 재입주자, 신규입주자)의 주거안정에 어떠한 영향을 주었는지를 분석하였다. 분석을 위해 주거환경개선사업의 시행이전 지구, 시행완료된 준공지구에서 각각 다른 유형의 거주자들을 대상으로 설문조사를 실시하였다. 조사항목은 주거환경개선사업에 대한 주민인식과 주거안정 관련한 개별주택 내부의 물리적 환경 측면, 주거비용측면, 개별주택의 외부 주거환경 측면을 조사하였다. 주요 연구결과를 보면, 첫째, 주거환경개선 사업으로 인해 입주자들은 보다 젊은 층, 고학력, 고소득계층으로 변화하지만 가구구성과 장애여부, 직업구성에는 큰 변화가 없었다. 둘째, 주거환경 개선사업이 주거안정에 미친 영향을 보면 지구거자는 향후 주택의 물리적 여건과 주거외부환경은 양호해지나 주거비용에 대한 부담을 많이 호소하였다. 재입주자의 경우 주택면적과 방수는 증가하여 물리적 여건은 양호해지고 주거비용측면에서 비용증가, 주거외부환경은 양호해지는 형태를 보였다. 신규입주자는 주택의 물리적 여건인 주택면적이나 방수의 변화는 차이가 없고 주거비용은 상승, 외부환경은 양호해지는 형태를 보였다.

• 한국산학기술학회논문지
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• 제18권11호
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• pp.409-415
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• 2017

본 논문은 보상 격차가 노동 생산성에 미치는 영향을 토너먼트 신규 인력 유입과 토너먼트 내 잔류자의 방출 효과를 중심으로 살펴본다. 보상 격차의 긍정적 효과를 설명하는 주요 이론인 토너먼트 이론에 따르면, 조직 내 보상 격차 확대는 외부의 우수 인력을 유인하고 내부의 저성과자들을 자연스럽게 퇴출함으로써 조직성과 향상에 기여하게 된다. 이러한 주장에도 불구하고 그간 토너먼트 이론을 중심으로 한 보상 격차 논의에서는 토너먼트의 참가자 측면이 간과되어 왔는데, 이에 본 연구에서는 토너먼트에 새롭게 유입되는 외부 인력 채용과 기존 토너먼트에서 잔류하는 인력에 대한 방출이 보상 격차와 노동생산성 간 관계에 어떠한 영향을 주는지를 살펴보았다. 이에 본 논문에서는 보상 격차 자체는 노동생산성에 정(+)의 효과를 가질 것으로 예측하였으며, 신규 인력 유입은 보상 격차와 노동생산성 간 정(+)의 관계를 약화시키는 반면, 잔류자의 방출 효과는 이러한 정(+)의 관계를 강화시킬 것으로 가설화하였다. 132개 기업 데이터를 통해 실증 분석한 결과, 보상 격차는 노동생산성 증가에 기여하였으며, 외부 신규 인력 유입은 보상 격차와 노동생산성 간 정(+)의 관계를 약화시키는 것으로 나타났다. 반면, 잔류자의 방출의 경우 예측과는 달리 오히려 보상 격차와 노동생산성 간 정(+)의 관계를 약화시키는 결과를 보였다. 이러한 이론적 논의와 실증 결과는 보상 격차 도입에 있어 토너먼트 내에서 우수 신규 인력의 유입과 잔류자의 방출이라는 조건이 갖추어져야 함을 보여준다.

• The Journal of Asian Finance, Economics and Business
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• 제5권3호
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• pp.195-206
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• 2018

Paying close attention to those new to an organization, whether fresh or experienced, whose primary interest is in (re)socialization, the current study intends to (1) further the concept of mentoring from a bilateral relationship to a community and culture fostered by developmental networks, (2) propose an integrated conceptual framework for organizational socialization, and (3) suggest implications for practice and future research. This study reviews, analyzes, and integrates research assets and subsequently re-conceptualizes the aggregate information as valid propositions and a conceptual framework. The findings include (1) 11 propositions regarding the relationships among network characteristics (embeddedness, diversity), developmental functions (career support, psychosocial support, and role modeling), and socialization outcomes (learning and attitudinal outcomes); and (2) an integrated conceptual framework that depicts a comprehensive mechanism through which developmental networks conduce to organizational socialization of newcomers. Implications are that developmental networking must be an individual's fundamental competency and an essential part of organizational onboarding processes, and imperative for both members' career development and innovative organizational culture. By integrating research assets on the developmental phenomenon into conceptualizations, this study furthers the concept of mentoring to organizational culture and stimulates a substantive discourse for theory-building towards organizational socialization from the developmental network perspective.

• 복식
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• 제34권
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• pp.37-56
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• 1997

The Korean Apparel industry has played an significant role for the econom-ic development in Korea which is mainaly due to the apparel exports to the world market. However the Koran apparel industry has confronted drastic changes in domestic and also in international market for the last several years. Korean apparel products have lost price competitiveness in international market because domestic labor costs have increased so fast and al-so newcomers such as China or other Asian countries have emerged as compet-itive producers. Furthermore domestic market has been saturated with the Korean apparel manufacturers and also with the foreign retailers. Therefore the Korean apparel industry should establish market-ing strategies in order to regain competitiveness. This study aims to analyze the factors for non-price competitiveness of Korean apparel industry and propose the way to regain competitiveness form the buyers' point of view. The present study utilize the survey data for the internet database which is established by the Cotton Incorporated. The results show that the Korean apparel industry is not competitive in terms of non-price factors such as minimum orders terms of payment preproduction stage use of new technolo-gy and lead times. These factors are not directly related to the price of product which is suggested to the buyers. However these are flexibility factors which play important roles in decision making process of buyers because they can reduce risks in uncertain business environment. Therefore the Korean apparel industry should establish global marketing strate-gies which can enhance non-price competitiveness as well as price competitiveness.

• 한국항만경제학회지
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• 제17권2호
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• pp.29-59
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• 2001

This paper aims to describe port competition in East Asia and the Korean government's port strategy. In doing so, the paper provides an overview of global changes in international trade, the shipping industry and the port business. It also delineates the status of port competition in the region. Particular examples are taken from the competition among the ports of Hong Kong, Singapore, and Malaysia, as well as those of Pusan and Kwangyang, Kaohsiung, Kobe, and Shanghai and Yantian. The port competition in East Asia is reviewed and classified in two groups: north-tier competition among traditional major players, such as Kobe and Pusan, and dark horses such as Shanghai, Kwangyang and perhaps Yokohama; and south-tier competition among the three traditionally big players Kaohsiung, Hong Kong and Singapore, and the relative newcomers of Yantian in China, and Tanjung Pelepas In Malaysia. Due to the enlarging of ships and expansion of port activities, the boundary between the two tier frontiers breakdown, or they may even merge, into one grand frontier, in the foreseeable future. Although it appears that Asian ports are not being very aggressive in preparing for the future of mega-carrier in their plans, it is true that China, Korea and Taiwan are moving full steam ahead in comprehensively developing their container ports on a large scale. It therefore seems to be the perfect time for rival ports to explore a port alliance strategy to fight against the trend toward alliances between of many shipping lines.

• 한국주거학회논문집
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• 제10권3호
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• pp.137-144
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• 1999

The movements to improve rural housing environments have been promoted since the beginning of Sae-Mauel project in 1970s. Since then policies to develop village units and to improve housing units and public facilities have been increased. These trends reflect rural inhabitants' strong desire to enjoy a quality of life. The project of Munhwa-Mauel aims to improve rural housing environment conducted by the Ministry of Agriculture and Forestry since the early 1990s. As of 1998, among 105 districts under the project. 56 districts have been parceled out and sold. The number of Munhwa-Mauels is expected to increase under Government's policy to construct 772 Munhwa-Mauels by the year 2004, which may have a large influences on private sectors. So far several studies have been conducted on the Munhwa-Mauel project. According to them Munhwa-Mauel has merits such that it modernizes the rural villages, and decreases the number of people moving out. while it causes conflict between the residents and the newcomers. Munhwa-Mauel also provides uniform housing layouts and unsuitable environments for the rural area, and lacks locality and facilities to promote income. As, however, the results of previous studies have not been verified through systematic researches, it is necessary to search a verified approach through the evaluation on housing environment in various aspects in order to provide planning guidelines for rural villages.

• 한국통신학회논문지
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• 제28권12B호
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• pp.1124-1134
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• 2003

본 연구는 사업자 사전 선택제 도입으로 인해 LM 시장에 경쟁이 확대될 경우의 경제적 효과를 분석하였다. 이 논문의 분석견과에 따르면, LM 시장 경쟁확대로 인해 소비자편익 변화는 최대 276억원 감소에서부터 최대 1,448억원 증대되는 것으로 추정되었고, 사업자 수익은 최소 2,079억원 최대 4,387억원 감소되는 것으로 추정되었다. 그리고 소비자편익과 사업자 수익을 반영한 사회적후생은 최소 1,739억원에서 최대 4,071억원 감소되는 것으로 추정되었다.

• Nuclear Engineering and Technology
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• 제54권7호
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• pp.2467-2474
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• 2022

Nuclear Power Plants (NPPs) are the most protected facilities among all critical infrastructures (CIs). In addition to physical security, cyber security becomes a significant concern for NPPs since swift digitalization and overreliance on computer-based systems in the facility operations transformed NPPs into targets for cyber/physical attacks. Despite technical competencies, humans are still the central component of a resilient NPP to develop an effective nuclear security culture. Turkey is one of the newcomers in the nuclear energy industry, and Turkish Akkuyu NPP has a unique model owned by an international consortium. Since Turkey has limited experience in nuclear energy industry, specific multinational and multicultural characteristics of Turkish Akkuyu NPP also requires further research in terms of the Facility's prospective nuclear security. Yet, the link between "national cultures" and "nuclear security" is underestimated in nuclear security studies. By relying on Hofstede's national culture framework, our research aims to address this gap and explore possible implications of cross-national cultural differences on nuclear security. To cope with security challenges in the age of hybrid threats, we propose a security management model which addresses the need for cyber-physical security integration to cultivate a robust nuclear security culture in a multicultural working environment.

• 이베로아메리카
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• 제23권2호
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• pp.179-208
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• 2021

Luis Humberto Crosthwaite, as a witness to the accelerated changes in Tijuana since the 80's, has built a chronicle of the city based on nostalgia, fantasy, popular language, music, and criticism of the inequality between both sides of the border, but above all, on humour and irony. Among the gallery of characters that populate his stories, the common resident of the border has a special place. Here we are not talking about the passing person or newcomers, but of those who have shaped their social and personal identity from a long every day relationship with the city and the borderline, which makes up what we will call the border-being. In this work, we dialogue with the psychoanalytic concept of border personality or borderline disorder, which refers in a general way to subjects with a deep fracture between the self and the being, which prompts a psychotic search to reconcile this division. In addition, we will engage in an interdisciplinary dialogue to analyse how Crosthwaite characterises the fracture of the border-subjects in some of the stories of the book Instrucciones para cruzar la frontera, to point out the psychosis caused by the sociocultural tensions of life in a border city like Tijuana.