ASL estimation of public building is based on how appropriate the maximum age of the asset is derived based on the age record of the asset in the statistical data owned by public institutions. This is because we get a 'constrained' ASL by that number. And it is especially true because other studies have assumed that the building is an Iowa curve R3. Also, in this study, the survival rate is 1% as the threshold value at which the survival curve and the predictable life curve almost coincide. Rather than a theoretical basis, in the national statistical survey, the value of residual assets was recognized from the net value of 10% of the acquisition value when the average service life has elapsed, and 1% when doubling the average service life has elapsed. It is based on the setting mentioned above. The biggest constraint in fitting statistical data to the Iowa curve is that the maximum ASL is selected at R3 150%, and the 'constrained' ASL is calculated by the proportional expression on the assumption that the Iowa curve is followed. In like manner constraints were considered. First, the R3 disposal curve for the RCC(reinforced cement concrete) building was prepared according to the discarding method in the 2000 work, and it was jointly worked on with the National Statistical Office to secure the maximum amount of vintage data, but the lacking of sample size must be acknowledged. Even after that, the National Statistical Office and the Bank of Korea have been working on estimating the Iowa curve for each asset class in the I-O table. Another limitation is that the asset classification uses the broad classification of buildings as a subcategory. Second, if there were such assets with a lifespan of 115 years that were acquired in 1905 and disposed of in 2020, these discarded data would be omitted from this ASL calculation. Third, it is difficult to estimate the correct Iowa curve based on the stub-curve even if there is disposal data because Korea has a relatively shorter construction history, accumulated economic wealth since the 1980’s. In other words, “constrained” ASL is an under-estimation of its ASL. Considering the fact that Korea was an economically developing country in the past and during rapid economic development, environmental factors such as asset accumulation and economic ability should be considered. Korea has a short period of accumulation of economic wealth, and the history of 'proper' architectures faithful to building regulations and principles is short and as a result, buildings 'not built properly' and 'proper' architectures are mixed. In this study, ASL of RCC public building was estimated at 70 years.

This study collected powder extinguishers with 6-10 years of elapsed life from January 2012 to January 2017 in market, factory, and apartment areas to experiment with changes in fineness and to examine the characteristics of extinguishing power. First, in the case of ABC powder, 98.3 wt% of the 8-year market area and 98.6 wt% of the 10-year apartment complex were found to be inappropriate in the first, second, and third arithmetic average analysis of the powder extinguisher from 6 to 10 years. That is, the fine distribution and size of the powder extinguishing agent particles should be managed within an appropriate range. It is analyzed that the powder fire extinguisher may experience a change in the fineness of the powder depending on the external environment exposure, placement, management status, and age of use, resulting in a decrease in digestive power or inability to radiate. Second, the fire extinguisher cannot be used in the initial fire suppression depending on the place of deployment, the environment of deployment, the progress of the number of years of use, and maintenance, so it is necessary to strengthen the device that enables fire extinguisher maintenance and inspection. Third, in the manufacturing process, the charging method should also be reviewed in consideration of the conditions of the workplace, the humid season, and the rainy environment.

Although the 1997 Raw Data of the National Wealth Statistical Survey (South Korea) is timely 20-year-old data, it is meaningful as a benchmarking in the capital stock estimations of Korea, which is estimated by PIM (permanent inventory method). In the case of machinery/equipment, it is the data that can analyze in depth the changes in the industrial structure of Korea. In the case of ASL (average service life) which has economic concept, since the change of ASL is not so large, ASL yielded by the Raw Data of the 1997 National Wealth Statistical Survey is meaningful as reference value for the ASL estimated by the Bank of Korea and the National Statistical Office. As you know Japan has changed its service life due to changes in its industrial structure. However, many of its assets are still used for the years indicated in Showa (before 1989). The same trend with other countries such as Japan. However, the United States is constantly devoted to assessing the useful ASL and value of assets by distinguishing between the Hulten-Wykoff models and those not. Korea has also benchmarked the useful ASL of the United States and Japan when it conducted its own survey every 10 years by due diligence until 1997. In this study, the ‘constraint’ Iowa curve estimation by the Raw Data of the 1997 National Wealth Statistical Survey is based on the age records of the assets and the maximum age of the assets appropriately derived. And then we made modified Iowa curve by smoothing. From this modified one, we suggested ASL by asset. After 1997, the vintage disposal data directly were collected by the National Statistical Office with Oh Hyun Seung, Cho Jin Hyung, in order to estimate the useful ASL. Since then, the B/S team of the Economic and Statistics Bureau of the Bank of Korea has been working on a new concept of content training.

감정평가 방식은 크게 3가지로 구분된다. 원가법 및 적산법 등 비용성의 원리에 기초한 감 정평가 방식인 원가방식, 거래사례비교법, 임대사례비교법 등 시장성의 원리에 기초한 감 정평가방식인 비교방식과 수익환원법 및 수익분석법 등 수익성의 원리에 기초한 감정평가 방식인 수익방식이다 이러한 건물의 현존가치 평가는 소송에 의한 경우 법원으로부터 감정인으로 지정된 법원감 정인들에 의해서 수행되고 있다. 감정평가사들에 의해 행해지는 대출 등의 소송 외적인 목 적으로 건물의 현존가치를 평가(이하 ‘사감정’이라 한다) 하는 경우에는 많은 연구와 세부적 인 평가기준이 있다. 그러나 법원감정에서는(유익비 등을 산정하기 위한 건물의 현존가치를 평가하는 경우 등) 평가 대상과 목적에 맞는 합리적인 방법이나 기준이 없어서 사감정의 관 련규정을 준용하거나, 감정인의 주관적인 판단에 의해서 감정평가가 진행되고 있다. 그로 인하여 건물의 현존가치 평가 결과는 평가하는 감정인에 따라서 많은 차이가 나고 있다. 이 와 같이 감정에 대한 객관적인 기준이 없이 감정인 마다 각자의 기준으로 현존가치를 산정 함으로써 감정의 신뢰성 및 효율성이 떨어지게 되고 이를 증거로 채택하게 되는 재판의 결 과에 대하여 당사자의 입장에 따라서는 감정의 결과를 불신하게 되어 재 감정을 요구하거나 감정평가자를 상대로 손해배상을 청구하는 등 강한 불만을 갖는 경우가 많다. 건물의 가치평가 중에서도 소송에 관련된 특수성이 있는 유익비 등을 산정하기 위한 평가 에서도 감정기준이나 방법에 대한 연구가 부족하여 감정인에 따라서 다양한 평가방법으로 건물의 현존가치를 평가하고 있다. 건물의 가치를 평가하는 방법 중에서 복성식평가법을 적용하는 경우에는 건물의 내용연수에 따른 감가수정을 통하여 건물의 가치를 평가하게 된 다. 이러한 경우에 합리적인 건물의 내용연수의 산정이 가치평가에 중요한 요소가 된다. 특 히 법원 감정의 경우에는 건물 전체의 내용연수도 중요하지만, 각 공종별 내용연수 및 잔 존내용연수를 산정하는 방법 및 기준이 필요하다. 이러한 법원감정의 현실을 반영한 각 공종별 내용연수 및 실용내용연수 산정 방법에 대한 기준 등에 많은 문제점을 파악하고, 실무에 활용할 수 있는 각 공종별 내용연수 및 실용내 용연수 산정 방법에 대한 기준을 제시하였다

This study was to analyze the fellowship program contents in KOICA international agricultural development cooperation during the time span from 2010 to 2012. In terms of program offering institute, the recipient country, program period and program budget as well as education and training contents, the fellowship programs were analyzed. As results, this study suggested following conclusions: the education and training contents were rather general agricultural or rural policies and broad themes than specific skills, which could limit the performance of the fellowship program; the programs were offered mainly by colleges, government-affiliated organizations and research institutes, which of them the share of private sector was increasing; and while the recipient countries were mainly located at Africa, Asia and South America, many programs were operated during one month or less, in which program preparation including needs analysis should be carried out for the program elaboration and substantiality.

This paper analyzes the effects of six month intensive English teachers’ training on communicative language teaching. The subject includes twenty teachers who showed greater improvement in the pre and post comparison of their English teaching demos out of 37 elementary school English teachers attended in the training. The in-house evaluation criteria have been used to select twenty teachers who enhanced their teaching skills greater than others‘ To look into details of the teaching enhancement, Foreign Language lnteraction (FLint), Communicative Orientation of Language Teaching (COL T) and Target Language Observation Scheme (T ALOS) have been used to investigate changes of interaction, teacher language, activities and methods. The findings ofthis paper include that the positive effects of six month teachers’ training show pal1icularly in the area of designing and implementing activities. Teacher's c1assroom languages have changed into more non-directive and affective after the training. Teachers allow more rooms of students' engagement by using more question, confirmation and feedback discourse routÎne after the training.

Engineering valuation is a specialized discipline requiring expert knowledge and judgment, which scientifically estimates the economic value of industrial properties. By industrial properties, we mean engineering structures such as mines, factories, build

  The estimation of mortality characteristics of industrial property is an important adjunct to engineering valuation and depreciation estimation. Once the important of depreciation estimation is determined, it is desirable to understand the processes upo

With the development of national industry, the number of social infrastructure facilities is gradually increasing. In addition, as time goes by, the aging of facilities is progressing gradually. For this reason, the importance of maintenance to ensure the safety of facilities is continuously increasing. However, there is still a lack of effective ways to invest the maintenance budget of facilities. For this reason, advanced foreign countries are actively studying facilities asset management techniques. In this study, construction cost and depreciation method of existing major facilities(1,2 class) were applied to examine the asset size of existing facilities according to changes in the service life of facilities.

With the development of national industry, the number of social infrastructure facilities is gradually increasing. In addition, as time goes by, the aging of facilities is progressing gradually. For this reason, the importance of maintenance to ensure the safety of facilities is continuously increasing. However, there is still a lack of effective ways to invest the maintenance budget of facilities. For this reason, advanced foreign countries are actively studying facilities asset management techniques. In this study, construction cost and depreciation method of existing major facilities(1,2 class) were applied to examine the asset size of existing facilities according to changes in the service life of facilities.