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일제강점기하 광주시 주택지의 공간구성과 변용 : 도시계획사업지구의 가구, 택지의 물리적 특성을 중심으로
류영국,양상욱 호남대학교 산업기술연구소 2012 녹색산업연구 Vol.18 No.2
광주시의 도시 및 주택에 관한 연구는 전통주택을 포함하여 상당한 축적이 이루어지고 있으며, 최근에는 원도심지역의 재생, 활성화 등을 위한 고밀도 정비 등을 취급하는 내용도 증가하고 있다. 본론에서는 일제강점기하에서 광주시의 발전과정 가운데 특성을 지닌 가구 및 가구내부를 구성하는 요소가운데 개체성을 지닌 택지와 관련하여 충장로1-5가의 연도택지특성, 궁동구획정리지구, 경양매립지를 조사대상지로 선정하여 조사 분석하였으며 향후 기성주택지의 정비방향이나 과제를 검토하는 데 기여할 수 있을 것으로 생각한다. 주요어: 일제강점기, 택지전면/택지깊이, 가구장변/단변, 구획정리, 시구개정사업, 구획정리사업 Gwang-ju city is making research into housing, city and it accomplished a great deal in traditional house as well. Recently, it is an upward trend that contains details such as high-density organization for invigoration and vitalization of old downtown in the study. In the body, we selected Kyoung-yang landfill, Kungdong readjustment area and housing-site's features of Chungjang 1st to 5th streets as subjects. Those are related housing sites which have individuality that composed housing and interior in the development process of Gwang-ju city under Japanese Colonial Era. This paper would contribute to organizing or problem-solving of existing residential section in the future. Key words: Japanese Colonial Era, Front of the Lot/ Depth of the Lot, Long side of the Block/ Short side of the Block, City Improvement Project, Land Readjustment Project
소영국,전영록,류병진 한국신뢰성학회 2015 신뢰성응용연구 Vol.15 No.4
Purpose : The purpose of this research is to develop the optimized method and process in the reliability-growth target setting, especially for complex and repairable system (or products) such as vehicle and airplane, construction equipment. Method : A reliability-growth test plan specifies a scenario to achieve the planned reliability value (or reliability target). The major elements in test planning are reliability-growth starting time and reliability level at that time, reliability-growth rate and reliability-growth target. All of them except a reliability target can be referred to the previous development data and reference researches. The reliability target level is directly influencing to test period (or time) which is related to test and warranty cost together. There are a few researches about the reliability target setting method and but showing the limitations to consider the views of engineering, business and customer together. There is no research how to handle the target setting process in detail. Result : We develop the optimized method and systematic process in reliability target setting with considering such views. This research also establish the new concept as production capability which means company (or supplier) capability to product its products. Conclusion : In this research result, we apply the new method to a few projects and can set the reasonable test planning. The developing results is showing the good balance between the developing cost and warranty cost at market.
소영국,류병진 한국신뢰성학회 2015 신뢰성응용연구 Vol.15 No.2
Reliability growth rate (or reliability growth curve slope) have the two cases of trend as a constant or changing one during the reliability growth testing. The changing case is very common situation. The reasons of reliability growth rate changing are that the failures to follow the NHPP (None-Homogeneous Poisson Process), and the solutions implemented during test to break out other problems or not to take out all of the root cause permanently. If the changing were big, the “Goodness of Fit (GOF)” of reliability growth curve to test data would be very low and then reduce the accuracy of assessing result with test data. In this research, we are using Duane model and AMSAA model for assessing test data and projecting the reliability level of complex and repairable system as like construction equipment and vehicle. In case of no changing in reliability growth rate, it is reasonable for reliability engineer to implement the original Duane model (1964) and Crow-AMSAA model (1975) for the assessment and projection activity. However, in case of reliability growth rate changing, it is necessary to find the method to increase the “GOF” of reliability growth curves to test data. To increase GOF of reliability growth curves, it is necessary to find the proper parameter calculation method of interesting reliability growth models that are applicable to the situation of reliability growth rate changing. Since the Duane and AMSAA models have a characteristic to get more strong influence from the initial test (or failure) data than the latest one, the both models have a limitation to contain the latest test data information that is more important and better to assess test data in view of accuracy, especially when the reliability growth rate changing. The main objective of this research is to find the parameter calculation method to reflect the latest test data in the case of reliability growth rate changing. According to my experience in vehicle and construction equipment developments over 18 years, over the 90% in the total development cases are with such changing during the developing test. The objective of this research was to develop the newly assessing method and the process for GOF level increasing in case of reliability growth rate changing that would contribute to achieve more accurate assessing and projecting result. We also developed the new evaluation method for GOF that are applicable to the both models as Duane and AMSAA, so it is possible to compare it between models and check the effectiveness of new parameter calculation methods in any interesting situation. These research results can reduce the decision error for development process and business control with the accurately assessing and projecting result.