• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2011년도 추계학술대회 논문집
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• pp.257-261
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• 2011

The failures of local structure of marine medium-speed diesel engine occurred in durability test. The vibration response of the whole engine was in an acceptance level, but the local structures were broken. ODS test and vibration measurement were carried out in order to investigate the root cause of durability problem. These tests revealed that the root cause of failures was excessive vibration by $4.5^{th}$ resonance between engine body and local structure. The best solution to reduce the vibration response is to change the type of mount. After a rigid mount was replaced by a flexible mount, maximum vibration level dropped to 72%.

• Current Research on Agriculture and Life Sciences
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• 제16권
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• pp.1-14
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• 1998

As a result of the execution of the import liberalization and local autonomy with WTO system launching, centralized rural extension service converted to localized rural extension service. This advent of globalization and localization era affects our over all agricultural condition, moreover the duty and role of rural extension organization which take complete of rural extension, is compelled to diversified and specified technology. In this study, first we will investigate the change of agricultural, rural community, and local rural extension service in globalization and localization era. Second we will analyze the confronted problems of local rural extension service. With this study's outcome for basis, we will present new role and direction of local rural extension service which can contribute to local agricultural development.

• 한국도로학회:학술대회논문집
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• 한국도로학회 2009년도 추계학술대회 논문집
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• pp.447-448
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• 2009

• 한국방재학회지
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• 제9권4호
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• pp.7-18
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• 2009

• 대한지리학회지
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• 제33권spc호
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• pp.685-696
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• 1998

• 대한원격탐사학회지
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• 제11권3호
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• pp.83-100
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• 1995

한국의 수도권 지역에서는 토지이용의 변화가 근래 급격하게 이루어지면서 국지기후에도 변화가 나타나고 있다. 본 연구는 지난 20년간의 토지이용변화의 특성 및 규모를 분석하여 이 변 화가 국지기후에 미치는 영향을 파악하고자 하였다. 연구지역에서의 도시화는 상당히 빠른 속도 로 진행되고 있어 현시점에서는 토지이용변화의 규모를 지도나 문헌조사 만으로는 충분히 조사할 수 없기 때문에 본 연구에서는 Landset 자료를 이용하여 토지이용 변화의 양상 및 규모를 밝히 고,기상자료(온도, 습도, 안개 등)의 시계열적 분석으로 토지이용의 변화가 국지기후에 미치는 영 향을 파악하고자 하였다. 그러나 측후소에서 관측된 기상자료 만으로는 기상요소의 공간적 분포 를 이해할 수가 없기 때문에 NOAA AVHRR 열적외선 자료를 이용하여 온도의 공간분포를 규명 하고, GIS 기법을 활용하여 시각적 효과를 높이므로써 지역정책을 수립할 때 의사결정에 도움을 주고자 하였다. 분석결과에 의하면 수도권지역의 녹지는 지난 20년간(1972-1992)에 94%에서 62% 로 감소된 데 반하여 도시적 토지이용은 4%에서 39%로 크게 증가되었다. 토지이용의 변화에 따 른 생물자원의 감소는 열수지 및 수분수지에 변화를 초래하여 국지기후 내지 미기후에 영향을 미 칠 것을 암시하고 있으며, 실제로 연구지역내의 국지기후는 점차 건조화.온난화 추세를 보이고 있 다. 그러므로 인간의 활동이 국지기후에 미치는 바람직하지 못한 영향과 위험한 오염을 효율적으 로 저감시키려면 토지이용의 변화가 환경에 미치는 영향에 관한 보다 깊은 연구가 절실히 요청된다.

• 농촌계획
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• 제27권1호
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• pp.103-116
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• 2021

The purpose of this study is to analyze and diagnose the actual state of extinction risk in rural villages by analyzing time series population characteristics and extinction risk index of rural villages(Haengjeong-ri). As a research method, a time series analysis was performed on the 'population over 65' and the 'female population aged 20 to 39' related to the local extinction index. In addition, the disappearance of Haengjeong-ri village was analyzed using the existing local extinction index. For the study, Haengjeong-ri village-level GIS spatial data was constructed, and population attribute data in 2010, 2015, and 2020 were constructed. In order to derive implications, the change of the 'high risk of extinction 'village in the 2020 local extinction index, the distribution of the population of 'high risk of extinction' villages by three years, the population analysis of 'high risk of extinction' villages continuously from 2010 to 2020, and 'high risk of extinction' An analysis of the increase and decrease of the population of the village and the change of the local extinction index of Haengjeong-ri, where the city, county, and towns are located were analyzed. As a result of the analysis of this study, it was found that the number of villages with an aging of more than 50% increased by 2 to 3 times over 10 years. As a result of the analysis of the local extinction index, in 2010, the southwestern and central regions of South Chungcheongnam-do were high-risk extinction areas, but in 2020, all cities except Cheonan and Asan were converted to high risk extinction areas. Research has shown that Chungnam is facing a serious aging and village extinction crisis, and since the disappearance of villages gradually spreads, an initial response policy is needed. This result will be the same not only in Chungcheongnam-do but also in other rural villages. Therefore, in the case of rural villages, it is necessary to analyze and diagnose the Haengjeong-ri village unit, not the Eup-Myeon unit, and a response policy through diagnosis must be prepared urgently.

• 전기학회논문지
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• 제61권3호
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• pp.373-379
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• 2012

This paper presents a fault location algorithm based on the adaptively estimated value of the local sequence source impedance for faults on a parallel transmission line. This algorithm uses only the local voltage and current signals of a faulted circuit. The remote current signals and the zero-sequence current of the healthy adjacent circuit are calculated by using the current distribution factors together with the local terminal currents of the faulted circuit. The current distribution factors consist of local equivalent source impedance and the others such as fault distance, line impedance and remote equivalent source impedance. It means that the values of the current distribution factors can change according to the operation condition of a power system. Consequently, the accuracy of the fault location algorithm is affected by the two values of equivalent source impedances, one is local source impedance and the other is remote source impedance. Nevertheless, only the local equivalent impedance can be estimated in this paper. A series of test results using EMTP simulation data show the effectiveness of the proposed algorithm. The proposed algorithm is valid for a double-circuit transmission line system where the equivalent source impedance changes continuously.

• 한국콘텐츠학회논문지
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• 제15권12호
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• pp.177-184
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• 2015

본 연구는 지역주민들의 지방자치에 대한 인식과 더불어 지방자치 주체들의 참여와 관련한 기본적 기능에 대한 인식, 그리고 주민들의 참여인식과 의지를 분석하고 주민참여를 위한 정책방향을 찾고자 하였다. 분석결과 지방자치에 대한 인식과 주민참여제도 및 의견수렴에 있어 긍정적인 응답이 낮게 나타나고 있었다. 주민들의 참여는 정책의 갈등을 줄이고 성과를 높일 수 있으며 주민들에게는 지역에 대한 관심과 개인적 정치참여를 통한 행복감을 높여 줄 수 있다. 우리나라의 지방자치가 지속적이고 안정적으로 성장할 수 있도록 주민참여에 대한 인식전환에서부터 효율적 제도운영까지 다양한 문제들에 대하여 재점검과 개선의 노력이 요구된다.

• 한국주거학회논문집
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• 제18권4호
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• pp.97-104
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• 2007

Today, Non-Governmental Organizations (NGOs) are considered to be an important actor in the policy process. Based on this fact, this study aims to analyze the perception of the housing-related NGOs in Korea. Questions were prepared around two main themes: housing welfare policy and local governance. The data were collected in 11 cities where multi-party talks on housing welfare were held in April and in May 2007. The results are as follows. When it comes to housing welfare policy, housing supply should be combined with rehabilitation policy of low-income households. The roles of local government are strongly emphasized. Stabilization of housing market is important, but concrete measures should be necessary to help those who cannot participate in housing transaction. Concerning local governance issues, local government is expected to play a great role in setting up a productive policy network; NGOs are inclined to rely on public aid; An emphasis is put on professional and academic education which can make housing welfare delivery system more effective. With the questionnaire survey results, evolution and characteristics of the NGO movements in the Korean housing sector and the recent change of housing policy orientations are explained. And, strengthening communication channel between central and local actors, participation of NGOs in the various housing surveys, establishing a regular forum on the local level, and so on, are proposed in the conclusion.