• 대한두경부종양학회지
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• 제33권2호
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• pp.1-8
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• 2017

Cancer is the disease of aging and Korea is one of the fastest aging country in the world. Older patients have decreased organ function and stress tolerance, therefore are at high risk of functional decline and developing complication from cancer and cancer treatment. Before beginning cancer treatment, it is important to assess patients' life expectancy, whether the patient is likely to die of cancer or of other comorbidity, and also the risks with cancer treatment. In order to estimate patient's physiologic age, it is recommended to perform geriatric assessment and implement appropriate geriatric intervention together with meticulous supportive care, when planning cancer treatment for older patients. In a resource limited country such as Korea, two step approach of applying screening tool followed by geriatric assessment can be more efficient. Geriatric assessment is used to predict toxicity from cancer treatment such as surgery, radiotherapy, and chemotherapy, predict survival, and also to aid treatment decision. Number of randomized trials are ongoing to compare usual care versus oncogeriatric care, and with these results we expect to improve outcome of older patients with cancer.

• 한국산업정보학회:학술대회논문집
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• 한국산업정보학회 2002년도 춘계학술대회 논문집
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• pp.89-96
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• 2002

본 논문은 관리 정책과 트래픽 엔지니어링을 기반으로 네트워크를 관리하는 통합 네트워크 관리 시스템의 구조에 관한 것이다. 본 논문에서는 제안하고 있는 방식은 네트워크 관리 정책을 단순히 네트워크 인프라에 적용하는 것이 아니라 네트워크 정책에 따라 실시간 트래픽 엔지니어링 기능을 병행하여 네트워크 자원을 최대한으로 사용하고 사용자에게 양질의 서비스를 제공하기 위한 정책 기반 네트워크 관리 시스템 구조를 제시하였다. 정책기반 서버, 트래픽 엔지니어링 서버, 그리고 네트워크 관리 서버간의 효과적인 인터페이스 및 연동 방식 또한 본 논문에서 기술하고 있다. 본 논문에서 제안한 정책 기반 네트워크 관리 시스템을 통하여 네트워크 관리자는 네트워크의 문제를 실시간으로 파악하고 이를 해결하기 위해 실제 네트워크 인프라를 어떻게 변경해야 하는지에 대한 해답을 효과적으로 도출할 수 있게 된다.

• Journal of Information Science Theory and Practice
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• 제1권1호
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• pp.69-82
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• 2013

Although MAchine Readable Cataloging (MARC) and Functional Requirements for Bibliographic Records (FRBR) are currently the most broadly used bibliographic structures for generating bibliographic data in the library community, each has its own weaknesses in describing information resources in diverse media. If the MARC format could be implemented in a structure that reflects the multi-layered characteristics of FRBR, its use could address current problems and limitations in resource description. The purpose of this research is to propose an alternative approach that can integrate the heterogeneous bibliographic structures of MARC and FRBR through the applications of facet and facet analysis. The proposed faceted data model is expected to function as a conceptual structure that can mediate between MARC data elements and FRBR attributes in order to utilize these structures in a more reliable and comprehensive way.

• 유통과학연구
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• 제11권6호
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• pp.59-65
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• 2013

Purpose - Studies of mechanism as a competitive strategy, a relatively new field in the study of strategic management research, has recently drawn the attention of the business management scholars. The literature has so far proposed the subjective-based view, environment-based view, and the resource-based view in its analyses of firm management. Hence, it is highly likely for the firm management to be reasonably thought of as a combination of and interaction among the three key elements of subject, environment, and resources this is the mechanism-based view (MBV). It is reasonable to consider firm management to be the combination of and interaction among the three key elements of subject, environment, and resources. The overall dynamic process that integrates these three elements and creates functional harmony is identified as the mechanism, the principle of firm management. Much of the extant literatures on MBV has mainly focused on case studies, a qualitative approach prone to subjectivity of the researcher, although the intuition from the study may lead to meaningful insights into a firm-specific mechanism. This study's focus is also on case analysis, but it still attempts a quantitative approach in order to reach a scientific and systematic understanding of the MBV. Research design, data, and methodology - I used both a qualitative and quantitative approach to a single model, given the complexity of the innovation processes. I conducted in-depth interviews with POSCO employees-20 from general management, two from human resources, eight from information technology, five from finance and accounting, and five from production and logistics management. Once the innovative events were selected, the interview results were double-checked by the interviewees themselves to ensure the accuracy of the answers recorded. Based on the interview, I then conducted statistical validation using the survey results as well. Results - This study analyzes the building process of innovation and the effect of the mechanism pattern on innovation by examining the case of POSCO, which has survived over the past 21 years. I apply a new analytical tool to study mechanism innovation types, perform a new classification, and describe the interrelationships among the mechanism factors. This process allows me to see how the "Subject"factor interacts with the other factors. I found that, in the innovation process of the adoption stage, Subject had a mediating effect but that the mediating effect of resource and performance was smaller than the effect of Subject on performance alone. During the implementation stage, the mediating effect of Subject increased. Conclusion - Therefore, I have confirmed that the subject utilizes resources reasonably and efficiently. I have also advanced mechanism studies: whereas the field's research methods have been largely confined to single case studies, I have used both qualitative and quantitative methods to examine the relationships among mechanisms.

• 인터넷정보학회논문지
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• 제14권2호
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• pp.73-85
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• 2013

제한된 모바일 디바이스의 자원을 해결하기 위해, 클라우드에 있는 서비스 또는 자원을 활용하는 모바일 클라우드 컴퓨팅(Mobile Cloud Computing, MCC) 연구가 활발히 진행되고 있다. MCC에서는 주로 기능 컴포넌트를 다른 노드로 오프로딩 (Offloading) 시킴으로써, 모바일 노드의 자원 문제를 해결하는 접근법을 주로 사용한다. 그러나, 현재 진행되고 있는 MCC에 대한 연구는 사전에 결정된 노드로 오프로딩 시키는 기법들이 주로 진행되고 있으며, 개념적인 수준에서 기법이 제시되고 있다. 본 논문에서는 복잡도가 높은 모바일 애플리케이션의 성능을 보장하기 위한 4가지 종류의 오프로딩 기법을 제안한다. 제시된 기법은 구현이 가능하도록 실용적인 수준으로 설계되며, 비용 모델을 제시하여 오프로딩을 통한 성능향상이 있음을 정량적으로 증명한다.

• Journal of Ecology and Environment
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• 제34권4호
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• pp.347-355
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• 2011

Effects of forest thinning on community level properties have not been understood yet in Korea. We investigated regeneration patterns and trajectories after a disturbance by applying a chronosequence approach. Light availability, litter and woody debris cover, and species composition were determined for twenty 50 m line-transect samples representing a disturbance duration gradient (within 11 years). Environmental factors such as light availability and coverage of woody debris and litter changed abruptly after thinning and then returned to the pre-disturbance state. Although species richness was gained at shrub and ground layer in a limited way in both forests, cover of various functional types revealed diversity in their responses. Notably, Alnus firma stands exhibited a larger increment of cover in woody plants. Ordination analysis revealed different regeneration trajectories between natural and planted stands. Based on ordination analysis, rehabilitated stands showed movement to alternative states compared with natural ones, reflecting lower resilience to perturbation (i.e., lower stability). Our results suggest that community resilience to artificial thinning depends on properties of the dominant species. But to get more explanatory ecological information, longer-term static observations are required.

• ETRI Journal
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• 제27권4호
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• pp.341-354
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• 2005

The adaptation of video according to the heterogeneous and dynamic resource constraints on networks and devices, as well as on user preferences, is a promising approach for universal access and consumption of video content. For optimal adaptation that satisfies the constraints while maximizing the utility that results from the adapted video, it is necessary to devise a systematic way of selecting an appropriate adaptation operation among multiple feasible choices. This paper presents a general conceptual framework that allows the formulation of various adaptations as constrained optimization problems by modeling the relations among feasible adaptation operations, constraints, and utilities. In particular, we present the feasibility of the framework by applying it to a use case of rate adaptation of MPEG-4 video with an explicit modeling of adaptation employing a combination of frame dropping and discrete cosine transform coefficient dropping, constraint, utility, and their mapping relations. Furthermore, we provide a description tool that describes the adaptation-constraint-utility relations as a functional form referred to as a utility function, which has been accepted as a part of the terminal and network quality of service tool in MPEG-21 Digital Item Adaptation (DIA).

• 한국농촌건축학회논문집
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• 제14권2호
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• pp.35-42
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• 2012

This research intends to find the concept of eco-village in suburban area which various people can experience. For this, we established general ideas through theoretical reflections, and found an objective of suburban eco-village through functional practices. According to the research, a composition of eco-village to reduce the environmental load consists of three major functions. First, by forming traditional meanings of eco-village community, it creates eco-friendly life through energy saving and resource recycling. Second, it functions as relieving the stress of the urbanites and healing their mind and body in the nature of formed eco-village community. Finally, the implementation of eco-village is an idea of group of people who tends to live with nature. Thus, by recovering the nature and by preserving the nature with eco-friendly concept, it will be developed by a place where people can experience the importance of nature. However, these three functions should reflect regional characteristics sufficiently, and through saving and utilizing the history, culture and ecological resources of the regions, it gives positive support to local natives' sustainable life. Consequently, it will show the right direction of development of suburban eco-village through each case analysis of these three functions.

• International Journal of Computer Science & Network Security
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• 제22권10호
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• pp.262-270
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• 2022

In the past two decades, there has been an increasing interest in project knowledge management, as knowledge is a crucial resource for project management success. Knowledge capture and sharing are two effective project management practices. Capturing and sharing project knowledge has become more efficient due to technological advances. Nevertheless, present technologies face several technical, functional, and usage obstacles and constraints. Thus, Blockchain technology might provide promising answers, yet, there is still a dearth of understanding regarding the technology's proper and practical application. Consequently, the goal of this study was to fill the gap in the literature about the adoption of Blockchain technology and to investigate the project stakeholders' acceptance and willingness to utilize the technology for capturing and sharing project knowledge. Due to this inquiry's exploratory and inductive characteristics, qualitative research methodology was used, namely the Grounded Theory research approach. Accordingly, eighteen in-depth, semi-structured interviews were conducted to collect the data. Concurrent data collection and analysis were undertaken, with findings emerging after three coding steps. Four influencing factors and one moderating factor were identified as affecting users' acceptance of Blockchain technology for capturing and sharing project knowledge. Consequently, the results of the study aimed to fill a gap in the existing literature by undertaking a comprehensive analysis of the unrealized potential of Blockchain technology to improve knowledge capture and sharing in the project management environment.

• Nutrition Research and Practice
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• 제1권1호
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• pp.19-28
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• 2007

To identify regulatory molecules which play key roles in the development of obesity, we investigated the transcriptional profiles in 3T3-L1 cells at early stage of differentiation and analyzed the promoter sequences of differentially regulated genes. One hundred and sixty-one (161) genes were found to have significant changes in expression at the 2nd day following treatment with differentiation cocktail. Among them, 86 transcripts were up-regulated and 75 transcripts were down-regulated. The 161 transcripts were classified into 10 categories according to their functional roles; cytoskeleton, cell adhesion, immune, defense response, metabolism, protein modification, protein metabolism, regulation of transcription, signal transduction and transporter. To identify transcription factors likely involved in regulating these differentially expressed genes, we analyzed the promoter sequences of up- or - down regulated genes for the presence of transcription factor binding sites (TFBSs). Based on coincidence of regulatory sites, we have identified candidate transcription factors (TFs), which include those previously known to be involved in adipogenesis (CREB, OCT-1 and c-Myc). Among them, c-Myc was also identified by our microarray data. Our approach to take advantage of the resource of the human genome sequences and the results from our microarray experiments should be validated by further studies of promoter occupancy and TF perturbation.