• Journal of Chest Surgery
• /
• 제55권4호
• /
• pp.332-337
• /
• 2022

Since the first lung transplantation in humans was performed in 1963, patient selection, standardized procurement, and surgical techniques have been developed and established for this procedure. However, despite these developments, surgical complications continue to be important factors influencing patient morbidity and mortality, and efforts should be made to decrease morbidity and improve survival rates by understanding, rapidly detecting, and appropriately treating surgical complications.

• Journal of Preventive Medicine and Public Health
• /
• 제38권3호
• /
• pp.267-275
• /
• 2005

Evidence on the relation of socioeconomic position (SEP) with health and illness is mounting in South Korea. Several unlinked studies and individually linked studies (longitudinal study) showed a graded inverse relationship between SEP and mortality among South Korean males and females. Based on the mortality relative ratios by occupational class reported in the published papers of South Korea and western countries, the magnitude of the socioeconomic inequality in mortality in South Korea seems to be similar to or even greater than that in western industrialized countries. A potential contribution of health related selection, health behaviors and psychosocial factors to explain this socioeconomic inequality in mortality was discussed. It was suggested that early life exposure measures would demonstrate a greater ability to explain socioeconomic inequalities in all-cause mortality than the above pathway variables in South Korea. This is based on the cause-specific structure of mortality among the South Korean population who have a relatively greater proportion of stomach cancer, hemorrhagic stroke, liver cancer and liver disease, and tuberculosis, which share early life exposures as important elements of their etiology, than western countries. However, the relative contribution of early and later life socioeconomic conditions in producing socioeconomic inequality in health may differ according to the outcome, thus remains to be investigated.

• 무역상무연구
• /
• 제67권
• /
• pp.143-162
• /
• 2015

Russia has a huge amount of energy resources. It is an attractive factor to countries which spend loads of energy. Republic of Korea is also one of large energy consumption countries. Therefore, It will be needed to raise energy cooperation with Russia. It's companies will increase trade focusing on the energy industry in the long term. Recently, However, Foreign companies should be careful when they enter the rapidly changing Russia market. In other words, companies will need a strategic approach to prepare the early case assessment and how to solve a possible dispute as they analyze cost and profit in business. This study is analyzing several dispute cases related in Russia. It presents some strategies for Korean companies such as dispute resolution method, arbitration institution selection method and so on. In addition, it proposes the introduction of the early case assessment for reducing a waste of time and cost. Furthermore, according as the importance of OECD Guidelines for Multinational Enterprises is highlighted in international community, companies should prepare practical division to establish a system of responsible business conduct. Finally, they will have to get an advice and counseling from the Russia legal experts in the early stages of the contract.

• Journal of Communications and Networks
• /
• 제8권1호
• /
• pp.93-105
• /
• 2006

The domination of the Internet by TCP-based services has spawned many efforts to provide high network utilization with low loss and delay in a simple and scalable manner. Active queue management (AQM) algorithms attempt to achieve these goals by regulating queues at bottleneck links to provide useful feedback to TCP sources. While many AQM algorithms have been proposed, most suffer from instability, require careful configuration of nonintuitive control parameters, or are not practical because of slow response to dynamic traffic changes. In this paper, we propose a new AQM algorithm, hybrid random early detection (HRED), that combines the more effective elements of recent algorithms with a random early detection (RED) core. HRED maps instantaneous queue length to a drop probability, automatically adjusting the slope and intercept of the mapping function to account for changes in traffic load and to keep queue length within the desired operating range. We demonstrate that straightforward selection of HRED parameters results in stable operation under steady load and rapid adaptation to changes in load. Simulation and implementation tests confirm this stability, and indicate that overall performances of HRED are substantially better than those of earlier AQM algorithms. Finally, HRED control parameters provide several intuitive approaches to trading between required memory, queue stability, and response time.

• 한국환경과학회지
• /
• 제31권4호
• /
• pp.311-318
• /
• 2022

In this study, we analyzed the relationships between weather factors and photosystem II activity (F_v/F_m), as a measure of photochemical efficiency, in three cool-season turfgrasses commonly planted on golf courses in Jeju, South Korea: perennial ryegrass (Lolium perenne L.), Kentucky bluegrass (Poa pratensis L.), and creeping bentgrass (Agrostis palustris Huds.). In all three turfgrasses, F_v/F_m was higher during late summer than during early summer. However, in late summer, F_v/F_m was significantly lower in perennial ryegrass than in the other two species. In early summer, F_v/F_m in perennial ryegrass and Kentucky bluegrass was positively correlated with mean low temperature and extreme minimum temperature, whereas, in late summer, this parameter in Kentucky bluegrass and creeping bentgrass was positively correlated with relative humidity, and in creeping bentgrass was negatively correlated with mean high temperature, mean low temperature, and extreme maximum temperature. These results indicate that raising low temperatures is favorable for perennial ryegrass and Kentucky bluegrass in early summer, whereas, in late summer, the lowering of high temperatures proves to be beneficial for creeping bentgrass, and raising relative humidity is conducive to the growth of Kentucky bluegrass and creeping bentgrass. These findings will contribute to improving the selection and management of turfgrasses on golf courses and sports fields.

• 국제학술발표논문집
• /
• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
• /
• pp.176-181
• /
• 2011

A role of cost modeler is that of facilitating design process by the systematic application of cost factors so as to maintain sensible and economic relationships between cost, quantity, utility and appearance. These relationships help to achieve the client's requirements within an agreed budget. The purpose of this study is to develop a parametric cost estimating model for the early design stage by using the multi-dimensional system of OLAP (On-line Analytical Processing) based on the case of quantity data related to architectural design features. The parametric cost estimating models have been adopted to support decision making in the early design stage. These models typically use a similar instance or a pattern of historical case. In order to effectively use this type of data model, it is required to set data classification and prediction methods. One of the methods is to find the similar class in line with attribute selection measure in the multi-dimensional data model. Therefore, this research is to analyze the relevance attribute influenced by architectural design features with the subject of case-based quantity data used for the parametric cost estimating model. The relevance attributes can be analyzed by Analytical Characterization. It helps determine what attributes to be included in the OLAP multi-dimension.

• Korean Journal of Radiology
• /
• 제25권1호
• /
• pp.86-102
• /
• 2024

Early diagnosis, accurate assessment, and localization of peritoneal metastasis (PM) are essential for the selection of appropriate treatments and surgical guidance. However, available imaging modalities (computed tomography [CT], conventional magnetic resonance imaging [MRI], and 18fluorodeoxyglucose positron emission tomography [PET]/CT) have limitations. The advent of new imaging techniques and novel molecular imaging agents have revealed molecular processes in the tumor microenvironment as an application for the early diagnosis and assessment of PM as well as real-time guided surgical resection, which has changed clinical management. In contrast to clinical imaging, which is purely qualitative and subjective for interpreting macroscopic structures, radiomics and artificial intelligence (AI) capitalize on high-dimensional numerical data from images that may reflect tumor pathophysiology. A predictive model can be used to predict the occurrence, recurrence, and prognosis of PM, thereby avoiding unnecessary exploratory surgeries. This review summarizes the role and status of different imaging techniques, especially new imaging strategies such as spectral photon-counting CT, fibroblast activation protein inhibitor (FAPI) PET/CT, near-infrared fluorescence imaging, and PET/MRI, for early diagnosis, assessment of surgical indications, and recurrence monitoring in patients with PM. The clinical applications, limitations, and solutions for fluorescence imaging, radiomics, and AI are also discussed.

• 한국건설관리학회논문집
• /
• 제6권5호
• /
• pp.89-101
• /
• 2005

건축공사의 프로젝트 초기단계에 있어서 관련조직 간의 정보전달은 프로젝트의 수행방법을 결정하는데 중요한 영향을 미친다. 그러나 실제로는 체계적인 분석방법 보다는 현장관리자의 경험에 의존하여 중요한 의사결정이 수행되어 왔다. 예를 들면, 건축공사 프로젝트에서 공법선택은 설계자의 경험에 의존한 의사결정으로 진행되어 왔다. 이로 인해 시공단계에서 불필요한 공법변경사례가 발생하여 공기지 연 및 공사비 상승을 초래하였다. 주된 원인은 건축공사 프로젝트의 특성을 반영한 합리적인 의사결정 프로세스에 관한 검토가 체계적으로 이루어지지 않았기 때문이다. 따라서 합리적으로 공법을 선택할 수 있는 지원도구뿐만 아니라 생산설계가 필요하다. 본 연구는 프로젝트 초기단계에서 다양한 영향요인과 연계하여 체계적인 생산설계과정과 의사결정모델을 제안하는 것을 목적으로 하였다. 이러한 관점에서 연구의 목적을 달성하기 위해 다음과 같은 수순으로 연구를 진행하였다. 1)생산설계에 관한 선행이론을 분석하였으며, 2)구체공사에 있어서 프로젝트 제약조건의 분석을 통해 최적의 공법을 선택하는 과정에 대해서 고찰하였다. 3)생산설계의 문제점을 구체화하기 위해 사례연구내용을 분석하였다. 4)사례연구 및 전문가 면담의 결과를 분석함으로써 생산설계를 지원하기 위한 협력체 모델을 제안하였다. 제안된 모델은 유사한 프로젝트에 적용할 수 있도록 체계적으로 축적된 자료로 관리되고 관련조직간 정보전달을 개선할 수 있는 유효한 도구로서 활용될 수 있을 것으로 예상되어진다.

• 한국보건간호학회지
• /
• 제7권2호
• /
• pp.39-52
• /
• 1993

The primary purpose of this study is to promote and establish the development of home health care in Korea. It focuses on identifying and classifying the nursing activities that were provided by health professionals for patients who were admitted to two hospitals with cerebral vascular disease. And also. the study was conducted for comparison of client selection criteria between health professionals, and identifying patients who needed home health care The subjects of this study were 38 patients with cerebral vascular disease who were admitted to neuro-surgery wards at 2 hospitals with more than 500 beds in Daegu from November 1. through 30. 1991. Survey instruments were questionnaires to identify nursing activities and classify patients who needed home health care. Data was collelected by 1 doctor and 2 nurses per patient independently. They checked the same patient with the questionnaire on the same day and never communicated their information about patients with each other. All the questionnaires checked by doctor and nurses completely were 90. Statistical methods for analyzing data were non-parametric tests (Kruskal Wallice test and sign test). Correlation and percentages were used for further analysis. From this study. the following summarized conclusions have been drawn. 1. 10. 2 kinds of treatment and nursing activities were provided by health professionals for patients with cerebral vascular disease in hospital. 2. The points of nursing needs were between 32-37 out of a total of 500 as a result of the assessment about the health status of patients who were admitted to neuro-surgery ward with cerebral vascular disease. The points of Barthel Index of Functional Status Assessing Devices were between 24-34. Client Selection Criteria for Home Health Care was congruent between the Health professionals because the difference were not found to be statistically significant. 3. Patients classfied as home health care clients were $70-80\%$ of all patients who were admitted in hospital. There was not significant difference in patient selection criteria for home health care between health professionals statistically. As a result. the validity of different tools used in classifying home health care client were found to be congruent. 4. $80-85\%$ patients who could be discharged and sent to their homes early were identified as home health care clients. This study using client selection criteria. for home health care contributed to tool development because the validity of tools was verified. And also, this research represented that there was congruency in patient selection criteria for home health care between different health professionals. As a result, this study represented that many patients who were admitted to hospitals could be classified as a home health care clients. On the basis of the findings. further studies are required to develop client selection criteria using universal tools for classifying home health care clients in other chronic diseases. It is also recommended that comparative studies for client selection criteria between health professionals treating in other chronic diseases are necessary.

• Radiation Oncology Journal
• /
• 제6권2호
• /
• pp.283-288
• /
• 1988

초기 유방암의 치료는 근치적 절제술이 오랫동안 주된 치료방법으로써 선택되어 왔으나, 근래에는 여성의 유방을 보존하고 미용효과를 기대할 수 있는 보조적 절제술 후 근치적 방사선치료법이 개발되어 지대한 관심과 상당한 논란이 거듭되어 왔다. 이러한 논란을 해결하기 위하여 그동안 세계적으로 많은 후향성 또는 전향성 분석을 시행하여 두 치료방법사이의 치료효과를 비교하여 본 결과, 국소치료율, 재발을, 그리고 생존율에 있어서 큰 차이를 보이지 않았다. 이와 같은 치료성적의 결과를 토대로 하여 최근에는 보조적 절제술 후 근치적 방사선치료법이 여성들의 유방을 보존하고 미용효과를 향상시킬 수 있을 뿐만 아니라 국소치료율, 재발율, 생존율도 근치적 절제술의 성적과 대동소이하므로 초기 유방암의 치료에 활발히 이용되기에 이르렀다. 본원에서도 이러한 추세에 따라서 보조적 절제술 후 근치적 방사선치료를 시행한 초기 유방암 1예를 보고하면서 아울러 많은 문헌고찰과 함께 향후 치료방침을 세우고자 한다.