• 한국토양비료학회지
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• 제47권3호
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• pp.205-212
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• 2014

Chronological changes of soil organic carbon (SOC) must be prepared by IPCC guidelines for national greenhouse gas inventories. IPCC suggested default reference SOC stocks for mineral soils and relative stock factors for different management activities where country own factors were not prepared. 3.4 million data were downloaded from agricultural soil information system and analyzed to get chronological changes of SOC for some counties and for land use in Korea. SOC content of orchard soil was higher than the other soils but chronological SOC changes of all land use had no tendency in differences with high standard deviation. SOC contents of counties depended on their own management activities and chronological SOC changes of districts also had no tendency in differences. Thus, Korea should survey the official records and relative stock factors on management activities such as land use, tillage and input of organic matter to calculate SOC stocks correctly. Otherwise, Korea should establish a model for predicting SOC by analyzing selected representative fields and by calculating SOC differences from comparing management activities of lands with those of representative fields.

• Journal of Gastric Cancer
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• 제1권3호
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• pp.161-167
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• 2001

Purpose: Although gastric carcinomas occur throughout the world and the incidence is on the decrease, they remain the most common type of carcinoma in Korea. Significant advancements in the diagnostics and the surgical treatment of gastric carcinomas have been achieved during the last three decades. The present retrospective study was undertaken to investigate the chronological changes in the clinical features, including clinicopathological findings, operative treatment, and prognosis of gastric carcinomas. Materials and Methods: A total of 1973 patients with a primary gastric adenocarcinoma who had been treated surgically during the period from 1983 to 1998 at the Department of Surgery, Korea University College of Medicine, were divided into two groups to evaluate chronological changes: 1007 patients had been treated during the period from 1983 to 1992 (early period) and 966 patients during the period from 1993 to 1998 (late period). Chronological changes in age, sex, ratio of early gastric cancer (EGC), and resectability were analyzed in all 1973 cases. For the 1755 resected cases, we also studied the chronological changes in the clinicopathological and treatment factors between the early-period (n=894) and the late-period (n=867) groups. Results: There were significant differences between the two periods with regard to age and ratio of EGC: EGC was more frequent in the late period. Univariate analysis of resected cases showed that gross type, tumor size, depth of invasion, UICC stage, and histological type were statistically significant. The analysis of the treatment factors revealed that total gastrectomies and extended lymphadenectomies were more frequent during the late period. The number of lymph nodes dissected was $26.0\pm12.7$ in the early period and $33.4\pm14.1$ in the late period (p<0.01). The 5-year survival rate in all cases was $51.4\%$ in the early period and $55.9\%$ in the late period. The stage-related survival rates (UICC 4th Ed., 1987) in the early vs. the late periods were $92.9\%\;vs.\;95.5\%$ in stage IA, $82.1\%\;vs.\;91.1\%$ in stage IB, $76.5\%\;vs.\;73.1\%$ in stage II, $46.5\%\;vs.\;52.1\%$ in stage IIIA, $14.5\%\;vs.\;33.6\%$ in stage IIIB, and $2.8\%\;vs.\;8.8\%$ in stage IV. There was a statistically significant difference in survival between stage IIIB and IV. Conclusion: These results suggest that the differences in the clinicopathological findings are related primarily to the increased number of early gastric cancer cases in the late period and that the improved survival noted during the late period for in stage IIIB and IV cancers might be related to extended surgery.

• 한국조경학회지
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• 제33권3호
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• pp.31-42
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• 2005

Much has been made of the changes over time to apartment complexes during the era of rapid development in Korea. This study aimed at analyzing the chronological changes since the 1970s in the laws and regulations governing outdoor space and the residents' appreciation of outdoor space in Daejeon's apartment complexes. The results of this study can be summarized as follows: 1. Similar changes can be found throughout Daejeon's apartment complexes. As time has passed, the building-to-land ratio and the floor-to-land ratio have deceased. The high density trend of apartment complexes has continued until very recently. 2. Although residents' satisfaction with outdoor space around apartments has improved, land for athletic and commercial spaces still remains at its lowest level. Therefore, these kinds of spaces need improvement. 3. Comparing the characteristics of outdoor space in apartment complexes from the 1980s to present indicates that current apartment residents are much more satisfied with the outdoor space, but are conscious of the lack of adequate facilities for the elderly and the handicapped people, and of the hiか density of their apartment complexes. Therefore, these essential consciousness should also be further improved. 4. The residents are gradually becoming aware of changes to the outdoor space that have occurred over time in the apartment complexes, such as in the areas allowed to parking, pedestrians, and athletics. 5. These chronological changes relate to the residents' interest in the changes that have occurred to the outdoor space, especially the convenience of parking, the color of the buildings, the form of the buildings, and the shape of the roofs.

• 한국실내디자인학회논문집
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• 제19권3호
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• pp.188-195
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• 2010

The museum architecture has been developed with new social and cultural movement because of the its representative role of cultural character. After emergence of the modern museum in Korea, the function and role of the museum has been changed and developed especially after increasing role by local government. The cultural desire by the new pace of consumerism has requested museums to undergo with some changes and advancements in their function and programs. This research aims to examine the progress of museum programs in Korea even though it has sort history. The scope of the analysis is discussed the extension of existing and new national museums which could be the measurement of the direction of the policy for museum. These changes have a tendency to correspond to social and cultural demands. Based on the existing program, new programs accommodate education and services which represent the characteristic of the museums. These changes caused the extension of the existing museums and the emergence of the small museums which has special program fields and even influences to expand existing museums for sub-characters. The study for chronological changes could be useful to establish the basic guidelines of the configuration for the museum program and space in the early stages for the new construction.

• 한국안전학회지
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• 제11권3호
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• pp.177-187
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• 1996

This paper is concerned with the comparison and chronological changes of the physical constitution of the Korean youth, age range 6-17. For the purpose, anthropometric data of schoolchildrens are surveyed from the Statistlcal Yearbook of Education published in Ministry of Education. The results show that body dimensions have increased consistently from 1964 to 1994. During the last 30years, stature has increased by about 1cm to 6cm per decade, on the average, and body weight has increased by about 1kg to 5kg per decade. On the other hand, silting height and chest circumference have increased by about 0.5cm to 3cm per decade. The results also show that there are significant sex differences in the characteristics of physical growth. These findings identified in this study mean that boys and girls have essentially different requirements for the design of the workplace.

• 한국문헌정보학회지
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• 제31권2호
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• pp.79-93
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• 1997

동일 분류항목 내에 분류되는 저작들을 개별화하여 배열과 검색을 용이하게 하기 위해 사용되는 도서기호는 크게 입수순기호, 저자기호, 그리고 연대순기호로 나누어 볼 수 있다. 현대의 매우 빠른 학문 발전속도는 최신의 정보가 최상의 가치를 갖도록 만들었고, 이용자들의 이용행태 또한 최신의 자료에 집중되고 있다. 이러한 정보의 가치기준과 이용행태의 변화에 따라 도서관에서는 최신의 자료를 오래된 것과 구분하여 모아줄 필요가 발생하였다. 본고에서는 이러한 요구를 반영하여 고안된 「새 연대순 도서기호법」이 널리 채용되게 하고자 하는 목적으로 그 특징과 기호구성을 살펴보았고, 일부 자모순 도서기호를 적용토록 지시된 항목의 성격에 대해 규명하였다.

• 대한지리학회지
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• 제44권1호
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• pp.17-30
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• 2009

멕시코 중부의 환경사를 파악하고자 할 때, 호수퇴적물을 이용하는 고환경 분석은 필수적이다. 이 지역의 고대문명과 스페인인의 식민사 등에 대한 기록이 거의 남아있지 않기 때문이다. 본 연구에서는 호수로의 토사 유입량을 분석하여 연구 지역에서 발생했던 토양 침식과 환경변화를 시기별로 밝혀 냈다. 토사유입량은 연대분석 결과와 작열감량 분석 결과를 기초로 산출하였다. 다양한 연대측정(Lead210, 바브층, 화산재층, 지진연도)을 수행하여 정확한 토사유입량를 계산할 수 있었으며 지역 환경에 중요한 영향을 미쳤던 사건들의 상세한 연대를 파악할 수 있었다. 연구 결과에 따르면, 유역의 환경을 훼손시킨 가장 큰 요인은 점령 전후의 옥수수 농경이었다 한편, 스페인인의 목축활동이 미친 영향은 최소한 호수 유역 내에서는 그리 크지 않았다. 본 연구에서는 여러 종류의 연대분석을 다각적으로 시도하여 보다 정확한 고환경 정보를 획득할 수 있었다.

• 복식
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• 제62권5호
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• pp.44-58
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• 2012

The purpose of this research is to contemplate chronological changes of Korean actress facial image and fashion from 1960s to 1990s and to identify Korean women's ideal beauty reflected through the times. Adjectives describing representative actresses of each studied decade were collected from major newspapers and magazines. Korean women's ideal beauty was divided into 4 sub-types such as youthful, pure, sophisticate, and sexy images. As a result of analyzing actress facial image and fashion, youthful and pure beauties were found consistently over the studied periods. Representative characteristics of sophisticate and sexy beauties have been changed over the studied periods which were influenced by socio-cultural environment factors. The result of this research can provide meaningful sources for historical drama, celebrity marketing strategy planning, and personal image consulting.

• 지역사회간호학회지
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• 제33권3호
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• pp.269-278
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• 2022

Purpose: This study analyzed the retention factors of Korean community health practitioners who sustained over 20 years based on a multi-dimensional framework. This study suggests global implications for nurses working in rural or remote areas, even during a worldwide pandemic. Methods: The participants were 16 Korean community health practitioners who worked in rural or remote locations for over 20 years. This study identified nurses' key retention factors contributing to long service in rural and remote areas. This is a qualitative study based on the narrative method and analysis was conducted using grounded theory. A semi-structured questionnaire was conducted based on the following: the life flow of the participants' first experience, episodes during the work experience, and reflections on the past 20 years. Results: First, personal 'financial needs' and 'callings' were motivation-related causal conditions. The adaptation of environment-work-community was the contextual condition leading to intervening conditions, building coping strategies by encountering a lifetime crisis. The consequences of 'transition' and 'maturation' naturally occurred with chronological changes. The unique factors were related to the 'external changes' in the Korean primary health system, which improved the participants' social status and welfare. Conclusion: Considering multi-dimensional retention factors was critical, including chronological (i.e., historical changes) and external factors (i.e., healthcare systems), to be supportive synchronously for rural nurses. Without this, the individuals working in the rural areas could be victimized by insecurity and self-commitment. Furthermore, considering the global pandemic, the retention of nurses is crucial to prevent the severity of isolation in rural and remote areas.

• 한국주거학회:학술대회논문집
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• 한국주거학회 1993년도 학술발표대회논문집
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• pp.33-37
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• 1993

This is a study on the Changes of the Apartment House Managerial Problems to grope for the way of more pratical management about increasing the apartment house in Korea. The documentary research method was used for this study and the Han-Kook newspaper(1954-1991) was used as an ananlysis data. On the basis of it, I examined the changes, such as the number of whole articles by time series and the column of head title. I also classified it into several subjects and analyzed it. Finally, I attemped to divide an chronological section on the Changes of the Apartment House Managerial Problems. On the basis of this study, I expect that various documents, related laws and regulations will be analyzed in no distant future. These is going to make the Apartment House Managerial Problems gave more systemic and efficiency.