• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.302-306
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• 2016

우리나라는 전 국토의 70%가 산지이고 하천경사가 다른 나라에 비해 상대적으로 급하여 홍수 관리에 매우 불리한 조건을 가지고 있으며, 특히 홍수기간의 집중호우 및 돌발홍수는 인명과 재산의 막대한 피해를 입히고 있다. 최근은 기후변화의 영향으로 집중호우 및 돌발홍수는 증가하는 추세에 있다. 이것은 홍수의 위험성 및 자연재해의 발생을 증대시키므로 이에 대한 하천유역 단위의 홍수량 예측 및 재해방지를 위한 설계기법의 개선과 개발, 신뢰성 있는 수문정보 획득을 위한 정밀 수문조사는 매우 필요한 상황이다. 기후변화에 대응하기 위한 수문조사의 방향은 새로운 국면에 접하였다고 볼 수 있다. 기존의 수문조사 방법을 통해 획득했던 수문량의 초과치를 벗어난 극대값의 수문량 관측 및 측정을 극복하는 문제, 홍수량 산정 및 예측을 위한 새로운 설계기법의 개발 또는 기존 방법의 개선 등 문제 해결을 위한 방향이 모색되어야 한다. 이러한 문제점을 해결하기 위해서는 중 소규모 유역 단위를 대상으로 지속적이고 신뢰성 있는 자료의 획득과 축적이 중요하나 시 공간적으로 모두 충족된 수문자료를 획득하기에는 불가능한 일이다. 따라서, 중 소규모 유역 단위의 대표성 있는 Test-bed 유역(설마천 유역/차탄천 유역)의 운영이 요구되며, 이를 통하여 얻어진 수문자료는 상기에 기술한 문제를 해결 가능하게 한다. Test-bed 유역에서 생성되는 수문자료에는 강우량, 하천수위, 지하수위 및 기상 등의 관측자료와 유량측정성과 자료가 있다. 관측된 수문자료를 이용하여 강우-유출량 분석, 증발산량 분석, 지하수함양량 분석 등 기본적인 수문특성을 분석하였다. 홍수량 예측 설계기법 개선으로는 홍수도달시간 산정방법을 검토하였으며, 최대강우강도-도달시간관계를 이용하여 도달시간을 개발하였다. 그리고 RDAPS 예측강우량과 수문모형을 이용하여 홍수량을 예측할 수 있는 시스템을 구축하였다. 유역 단위의 수문조사를 통해 생성된 수문자료는 다양한 분석과 설계에 응용되므로 지속적인 Test-bed 유역의 운영은 매우 필요한 실정이다.

• Korean Journal of Agricultural and Forest Meteorology
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• v.17 no.4
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• pp.317-325
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• 2015

An adequate downscaling of synoptic forecasts is a prerequisite for improved agrometeorological service to rural areas in South Korea where complex terrains and small farms are common. In this study, geospatial schemes based on topoclimatology were used to scale down the Korea Meteorological Administration (KMA) temperature forecasts to the local scale (~30 m) across a rural catchment. Then, using these schemes, local temperatures were estimated at 14 validation sites at 0600 and 1500 LST in 2013/2014 and were compared with the observations. The estimation errors were substantially reduced for both 0600 and 1500 LST temperatures when compared against the uncorrected KMA products. The improvement was most notable at low lying locations for the 0600 temperature and at the locations on west- and south-facing slopes for the 1500 LST temperature. Using the downscaled real-time temperature data, a pilot service has started to provide the field-specific weather information tailored to meet the requirements of small-scale farms. For example, the service system makes a daily outlook on the phenology of crop species grown in a given field using the field-specific temperature data. When the temperature forecast is given for next morning, a frost risk index is calculated according to a known relationship of phenology and frost injury. If the calculated index is higher than a pre-defined threshold, a warning is issued and delivered to the grower's cellular phone with relevant countermeasures to help protect crops against frost damage.

• Journal of the Korean Institute of Landscape Architecture
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• v.47 no.6
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• pp.37-44
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• 2019

This study was conducted to identify the distribution characteristics of small village wetlands in Geumsan County, an inland mountain zone, and comparing with Seocheon County, a coastal plain area with different ecological environment characteristics. Using Arc-GIS (v10.1) the village wetland code was extracted to derive the possible location of the village wetland, and the final distribution of the village was obtained by performing indoor judging work based on satellite images, aerial photographs, topographical maps, Korea Land Information System (KLIS), land use level, land cover degree (division), and land use status by local surveying and indoor analyzing. Although Geumsan County (576.66km2) is more than 60% larger than Seocheon County (358.04km2), 607 villages in Geumsan County and 570 villages in Seocheon County are capable of making similar levels of 106.5% of wetlands, but only a fraction of those in Seocheon County were found to be 67.6%. The density of the village wetlands was much lower than that of Seocheon County, a coastal plain area, because there were many mountainous areas in Geumsan County, and most of the wetlands temporarily created for water supply were removed during the analysis phase of the Jeongsa Image, so the actual wetlands of the village were judged to be only two-thirds different from those of Seocheon County.

• Economic and Environmental Geology
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• v.44 no.4
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• pp.289-302
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• 2011

Since the frequency of the earthquake occurrence in Korean peninsular is continuously increasing, the possibility that massive landslides are triggered by earthquake is also growing in Korea. Previously, the landslide is known to be induced by large magnitude earthquake, whose magnitude is larger than 6.0. However, the landslide can be induced by only small magnitude earthquake, especially in the fully saturated soil. Therefore, the susceptibility of landslide caused by small magnitude earthquake in fully saturated soil is analyzed in this study. For that, the topographical and geological characteristics of the site were obtained and managed by GIS software. In the procedure of the study, slope angle, cohesion, friction angle, unit weight of soil were obtained and constructed as a spatial database layer. Combining these data sets in a dynamic model based on Newmark's displacement analysis, the landslide displacements were estimated in each grid cell. In order to check out the possibility of the earthquake induced landslides, the level of the groundwater table is varied from dry to 80% saturated soil. In addition, in order to analyze the effect of the magnitude of earthquake and distance to epicenter, four different earthquakes epicenters were considered in the study area.

• Journal of Korean Society of Disaster and Security
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• v.15 no.3
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• pp.57-66
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• 2022

According to the official letter of the Ministry of Employment and Labor (recent guidance on the status of deaths in the construction industry and thorough safety management, April 4, 2022), 17 deaths occurred in construction works worth more than 5 billion won until March 31, 2022. In terms of the size of the construction, 7 cases of 5 billion won to 12 billion won, 5 cases of 12 billion won to 80 billion won, and 5 cases of more than 80 billion won occurred. The causes of death accidents were found to be nine cases (50%), five cases (28%), two cases of collapse (11%), one case of entrapment (5%), and one case of drowning (5%). Safety facilities need to be strengthened to reduce deaths caused by falling, which accounts for most of the deaths, and if fall prevention nets, openings, and safety rails are completely installed, most falling accidents can be prevented. Therefore, this paper intends to present cases of development and use of patent technology through improvement of safety facilities in order to prevent accidents corresponding to the fall of new urban living housing sites, which are small apartment houses.

• Science of Emotion and Sensibility
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• v.25 no.2
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• pp.71-78
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• 2022

This study investigates the recommendation for tax accounting services used in many companies. In particular, it aims to create guidelines for small businesses with fewer than 100 employees, which are relatively difficult to manage in terms of cost or time. We surveyed 100 corporate officials on basic business information, such as the number of employees, job titles, and business type, as well as the type of tax accounting service, the recommended score for the service, the reason for the score, and other opinions related to tax accounting services. In particular, the recommendation score seeks to obtain more effective results by using the Net Promoter Score method, which is known to be more effective in understanding customer opinions than general customer satisfaction surveys. The survey revealed a Net Promoter Score for a recommendation of -33 points, lower than the general Net Promoter Score. It also indicated that tax accounting services need improvement. Specifically, the opinions of the respondents who gave a non-recommendation score were as follows: "Not inconvenient or comfortable," "It was just okay," "I don't know if it would be helpful," and "There is no differentiation and there are no special alternatives." We concluded that an improved service for raising recommendation scores was necessary. This survey focused on recommendations for companies with fewer than 100 employees; future studies should incorporate larger companies and more variables.

• Journal of the Korea Institute of Building Construction
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• v.24 no.1
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• pp.97-108
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• 2024

This research delves into the escalating concerns of accidents and fatalities in the construction industry over the recent five-year period, focusing on the development of a Safety Perception Model to augment safety measures. Given the rising percentage of elderly workers and the concurrent drop in productivity within the sector, there is a pronounced need for leveraging Fourth Industrial Revolution technologies to bolster safety protocols. The study comprises an in-depth analysis of statistical data regarding construction-related fatalities, aiming to shed light on prevailing safety challenges. Central to this investigation is the formulation of a Safety Perception Model tailored for small-scale construction projects. This model facilitates the quantification of safety risks by evaluating safety grades across construction sites. Utilizing the DWM1000 module, among an array of wireless communication technologies, the model enables the real-time tracking of worker locations and the assessment of safety levels on-site. Furthermore, the deployment of a safety management system allows for the evaluation of risk levels associated with individual workers. Aggregating these data points, the Safety Climate Index(SCLI) is calculated to depict the daily, weekly, and monthly safety climate of the site, thereby offering insights into the effectiveness of implemented safety measures and identifying areas for continuous improvement. This study is anticipated to significantly contribute to the systematic enhancement of safety and the prevention of accidents on construction sites, fostering an environment of improved productivity and strengthened safety culture through the application of the Safety Perception Model.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.231-231
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• 2011

우리나라 수자원이용량의 47%를 차지하고 있는 농업용수는 공사관리지역(64%)와 지자체관리 지역(36%)으로 이원화 되어 있고, 공사관리지역은 2000년 이전 103개 농지개량조합이 개별적으로 관리하다가, 2000년 이후 농업용수의 효율적 관리를 위하여 2000년에 3개기관(농지개량조합, 농지 개량조합연합회, 농어촌진흥공사)이 통합하여 현재 한국농어촌공사가 되었다. 2000년 이전 103개 조합에서 저수지, 양배수장 등 수리시설물과 용배수로 등 평야부 시설물에 대한 각종 정보가 통합적으로 관리가 되지 못하였고, 매년 발간되는 농업생산기반정비사업 통계연보를 통해서 체계적인 관리가 되어왔다. 2000년 이후 통합 공사가 출범하면서 전국단위의 종합적이고 체계적인 정보관리가 가능해졌으나, 농업용수 정보(자료)가 개별 조합별로 산재되어 있고 전산화 되어 있지 못하였으며, 시설물의 설치년도가 오래된 경우 자료자체가 존재하지 않은 경우가 많이 있고, 소규모 시설의 경우 정보(자료)관리의 필요성에 대한 효용성에 대한 인식이 낮으므로 하여 농업용수관리 정보화에 많은 어려움이 있었다. 또한 기초적인 정보(자료)관리 구축이 되지 못한 상황에서 개별 시설물 또는 수계별로 이 치수관리를 위한 의사결정 지원시스템 구축에도 많은 어려움이 발생하였다. 이는 공사 내부 뿐만 아니라 외부의 우려와 비판이기도 하였다. 이러한 어려운 여건에도 불구하고, 우선 지난 10년 동안 농업용수관리의 기초적인 정보(자료) 관리 구축을 실시하여 수원공과 평야부 시설에 대한 정보구축을 실시하였고, 각 사업별로 RIMS, RAWRIS, TIMS, 지하수넷, UIRRI, 4대강상황실 등의 정보화 시스템을 구축하였다. Post 4대강, 유역통합관리 등 수자원환경의 내외적인 여건변화에 맞춰, 2010년 부터 개별 시스템에 대한 통합 농업용수관리 정보시스템 구축을 위한 마스터플랜을 수립하고 있고, 금번 마스터 플랜수립결과를 바탕으로 실질적인 시스템 구축을 완료하게 되면 명실상부한 농업용수분야의 최상위 시스템으로 자리매김 될 것이다.

• Journal of Game and Entertainment
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• v.2 no.2
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• pp.75-84
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• 2006

In terms of creating widespread popularity and a high value added business, TV drama is recognized as an unrivaled entertainment content above any other TV program genres Although recently some broadcasting companies have been trying to set up a drama production system, it seems that a well-structured system has not been established, yet. This study analyses the practices and mechanisms of drama producing processes based on the in-depth interviews with the experts in the drama production fields in three major broadcasting companies. It is found that the Korean drama production system is 'a producer-director system' and that the strategies for the windowing effects are not systematically applied from the pre-production stage. For the broadcasting companies to strengthen the competitiveness through drama, the expert-producer system should be introduced, the production elements should be systematically managed, and the multi-use strategies should be effectively established.

• Journal of Internet Computing and Services
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• v.20 no.2
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• pp.51-59
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• 2019

In this paper, we analyzed the relationship between charging operation system and electricity charges connected with charging infrastructure among data of many demonstration projects focused on electric vehicles recently. At this point in time, due to the rapid increase in demand for the electric charging infrastructure that will take place in the future, we can prepare for an upcoming era in the sense of forecasting the demand value. At the same time, demonstrating and modeling optimized system modeling centering on sites is a prerequisite. The modeling based on the existing small - scale simulation and the design of the operating system are based on the data linkage analysis. In this paper, we implemented a new optimized system modeling and introduced it as a standard format to analyze time - dependent time - divisional data for each vehicle and user in each point and node. In order to verify the efficiency of the optimization based on the data linkage analysis for the actual implemented electric car charging infrastructure and operation system.