• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 춘계 학술발표회
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• pp.921-926
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• 2010

To examine saturation characteristics of an unsaturated soil in the steep slope area with collapse, it separated dry season from rainy season and measured water content and permeability, and measured permeability by using a tension infiltrometer in the site. In addition, it conducted electrical resistivity survey to look into thickness of ground and geological structure of underground. The collapsed slope increased depth of weathered zone compared to upper slope, and there electrical resistivity anomalous zone caused by the filtrated underground water was observed. The permeability of the collapsed area was observed high compared to upper and lower slopes of retarding basin without collapse, and the permeability measured by dividing the dry season and rainy season was measured high in case of dry season.

• 디지털산업정보학회논문지
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• 제11권4호
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• pp.155-164
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• 2015

In this paper, we propose a new color interpolation method based on trilateral filter approach, which not only preserve the high-frequency components(image edge) while interpolating the missing raw data of color image(bayer data pattern), but also immune to the image noise components and better preserve the detail of the low-frequency components. The method is the trilateral filter approach applying a gradient to the low frequency components of the image signal in order to preserve the high-frequency components and the detail of the low-frequency components through the measure of the freedom of similarity among adjacent pixels. And also we perform Gaussian smoothing to the interpolated image data in order to robust to the noise. In this paper, we compare the conventional demosaicing algorithm and the proposed algorithm using 10 test images in terms of hue MAD, saturation MAD and CPSNR for the objective evaluation, and verify the performance of the proposed algorithm.

• 대한소아치과학회지
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• 제23권4호
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• pp.937-945
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• 1996

Nitrous oxide has acquired widespread use as a tool for management of anxious and comprehensive pediatric dental patients. Clinical impressions have suggested that inhalation sedation with $N_2O/O_2$ reinforces the effect of other sedatives. Fifteen uncooperative children, mean age of 37months, who were regarded as fail in the first treatment using chloral hydrate-hydroxyzine orally, midazolam orally or intranasally, were sedated with the same sedatives in conjunction with $N_2O/O_2$. All the children were restrained in a pediwrap and were monitored with pulse oximeter for their heart rate and oxygen saturation. Degree of sleep, crying and movement were evaluated. The clinical results indicated that a satisfactory level of sedation was achieved in approximately two thirds of the cases (about 66 %) under those sedation manner. Complications were rare and those of treatments were successfully completed without difficulty.

• 디지털산업정보학회논문지
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• 제10권4호
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• pp.143-150
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• 2014

A high power amplifier(HPA) has widely been used in wireless communications. In order to have a maximum power efficiency, the HPA uses a saturation domain having nonlinear characteristics, which generates nonlinear distortions to decrease the transmission efficiency. In order to solve this problem, various methods to linearize HPA have been reported until now, and the pre-distorter method is very attractive among them. In this paper, a new enhanced adaptive pre-distorter method was proposed to be applied for compensating nonlinear distortions of HPA. Through computer simulations as well as the analytical analysis, it could be shown that it is possible for both conventional adaptive pre-distorter and proposed adaptive pre-distorter, to be applied for linearizing HPA. Also, the simulations results demonstrated that the proposed adaptive pre-distorter may have faster convergence speed and better capability of compensating the nonlinear distortion than the conventional adaptive pre-distorter with nearly equal computation complexity.

• 한국도로학회논문집
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• 제17권4호
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• pp.117-126
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• 2015

PURPOSES : This study aims to investigate the direct and indirect influence areas from incidents on urban interrupted roadways and to develop traffic management strategies for each influence area. METHODS : Based on a literature review, various traffic management strategies for certain incidents were collected. In addition, the relationship between the measure of effectiveness and the characteristics of incidents was explored using an extensive simulation study. RESULTS : From the simulation studies, traffic delays increased as the number of lane closures increased, and the impact of lane closures was reduced to the direction upstream from the incident site. However, the magnitude of the delay change depended on the degree of saturation. Using these characteristics, the direct and indirect influence areas resulting from incidents were defined, and traffic management strategies were established for each direct and indirect influence area and for each level of incident. CONCLUSIONS: The results of this study will contribute to the improvement of national traffic safety by preventing secondary incidents and by effective adaptation to incident events.

• 한국콘텐츠학회논문지
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• 제22권9호
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• pp.461-472
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• 2022

본 연구는 COPD 환자를 대상으로 자가관리를 증진시키기 위한 건강정보 경험을 탐색하였다. 자료가 포화상태에 이를 때까지 COPD를 진단받은 성인 환자 30명을 면담하였으며 수집된 자료는 전통적인 내용분석을 시행하였다. 환자의 자가관리 건강정보에 관한 경험은 '건강정보에 따른 자가관리 실천', '건강정보에 따른 자가관리 실천에 어려움', '자가관리 건강정보를 얻기 위한 다양한 노력', '건강정보 제공에 대한 만족감' 의 네가지 주제가 도출되었다. 대부분의 대상자는 주치의가 설명한 건강정보 외에는 자가관리 증진을 위한 구체적인 건강정보 제공을 받지 못하였음을 확인할 수 있었다. 다양한 의료진으로부터 건강정보를 제공받을 수 있는 병원환경 마련이 필요하며 다양한 매체, 가족, 지인 등 경로를 통해 얻는 건강정보가 정확하고 지속적일 수 있도록 건강정보 제공체계 마련이 필요하다.

• KIEAE Journal
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• 제8권2호
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• pp.71-78
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• 2008

Subway is a major transportation in the city that is allied to the daily life of people. As a public space, subway station must satisfy the citizens with convenience, safety and esthetic factors. The bench which is one of the major street furniture on the subway platform has a lot of physical contact. Therefore the design of benches must be considered in the aspects of not only aesthetic design but also ergonomic design. The goal of this study is to find out the current conditions and problems of benches and at the same time suggest how to arrange, design, and manage them at the proper manners at subway platform. The result of the study is as follows. First, the problems of design are that the benches at a same platform have various design, the saturation of color is too high, and the design is unfashionable. The second, at the management part there is no such a total management system and specialist for the street furniture section and lack of rational management regulations. The third, results of a new survey suggest that citizens think negatively about present bench's conditions such as design and administration.

• The Journal of Asian Finance, Economics and Business
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• 제8권5호
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• pp.667-678
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• 2021

The industrial life cycle theory was extended to the product life cycle theory and the corporate life cycle theory, but a conceptual life cycle was presented, and quantitative empirical evidence for this was insufficient. It is intended to improve appropriate resource planning and resource allocation by quantitatively predicting the industrial cycle and its position (age) in the cycle. Human resources, tangible assets, and industrial output analysis were conducted based on 28 years of actual data of 39 industries in Korea by applying the Gompertz model, which is a population ecology prediction model. By predicting with the Gompertz model, the coefficient of determination R2 value was 97% or more, confirming the high suitability with the actual cumulative sales value of the industry. A numerical model for calculating the life cycle of each industry, calculating the saturation of input resources for each industry, and diagnosing the financial stability of the industry was presented. These results will contribute to the decision-making of industrial policy officers for budget planning appropriately for each stage of industry development. Future research will apply the numerical model of this study to foreign national industries, complete an inter-industry convergence diagnostic model (e.g. ease of convergence, suitability of convergence, etc.) for renewal of fading industries.

• Journal of East Asia Management
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• 제3권2호
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• pp.21-41
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• 2022

This study aims to analyze the characteristics of the management situation of the Korea Railroad Corporation(KORAIL) through the management innovation process of the KORAIL and to suggest its implications for military application. Despite stable demand, the railway passenger industry had the limitation of not being able to abolish deficit routes due to public service obligations. In addition, the launch of the Suseo High-Speed Line has introduced a competitive system, posing a threat to corporate management. KORAIL wanted to overcome this crisis by innovating its management through the utilization of big data, improvement of the freight business, decentralization of demand, the introduction of tourism railroads, and development of station influence areas. By utilizing big data, KORAIL was able to optimize the railway fare system while reducing fixed costs spent on railway maintenance. It also drastically reduced the station of cargo and created a base station to pursue economies of scale. On the other hand, the existing exclusive station system was abolished to solve the chronic saturation of the downtown area, and the railway demand was moved to Gwangmyeong Station and Suwon Station to optimize the passenger supply. In particular, it developed a new business model called the tourism railway by developing the mountain Byeokjin Line, which was a chronic deficit line, and sought to improve liquidity through the development of the station influence area. Such a process of innovation at KORAIL suggests an appropriate direction in seeking ways to innovate the military medical institutions. First of all, the necessity of improving organizational immersion through the development of a personnel structure suitable for the compulsory organization, while expanding the facilities of the division and corps, and reducing the time required for medical treatment and waiting through the establishment of a data-based medical system was suggested. Next, it was also discussed to integrate the National Health Medical College, which received accreditation as a medical facility through the designation of advanced general hospitals and is ultimately under discussion with the Medical Institution. Through this, we hope that the military medical institutions, which are facing various challenges, will overcome existing limitations and be re-lighted as innovative institution that provides comprehensive public health services.

• 서비스연구
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• 제6권3호
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• pp.91-105
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• 2016

현재 뷰티 산업은 나날이 포화상태에 이르고, 경쟁은 날로 심해져만 가고, 갈수록 영리해지고 변덕스러워지는 헤어살롱 고객의 까다로운 기대와 욕구는 높아져만 가고 있다. 특히 소규모 헤어 살롱에서 경쟁우위를 확보하고 고객을 만족시켜 고객의 충성도를 획득하고 유지하는 패턴은 더욱 더 힘들어 지고 있다. 헤어살롱을 방문하는 고객의 욕구는 다양한 헤어 디자인은 물론이고 또 다른 개인의 니즈에 맞는 서비스를 요구하고 있다. 따라서 본 연구에서는 소규모 헤어 살롱의 경쟁력은 고객서비스를 위한 각고의 노력과 정성, 고객에게 만족하고 어울리는 헤어 스타일의 제공과 헤어 디자인에 대한 전문성, 고객과의 신뢰를 바탕으로 이루어지고 있다는 점에 역점을 두고 헤어 살롱의 매출 증대와 고객의 충성도를 높여 헤어살롱의 지속가능한 성공요인 현황분석에 목적을 두었다. 본 연구를 통하여 얻은 결론은 다음과 같다. 기술이 뛰어남, 서비스의 우수성, 합리적인 가격, 헤어 살롱의 위치, 광고 및 홍보, 단독 매뉴얼의 품질요인, 기술 교육 및 인성교육의 요인, 사후 서비스 요인, 고객유지 요인, 고객관계관리 요인, 정보품질 요인을 위한 지속적인 개선과 개발의 필요성이 요구된다.