• International Journal of Contents
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• 제13권1호
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• pp.1-8
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• 2017

The study aims to reveal the differences in the factors influencing portal news and news site application usages on smartphones in regard to political discussion networks, news use across multiple media platforms and news genre consumption. The results demonstrate that those factors affected both types of application usages in a different manner when controlling for demographics. The more participants conversed politics with homogeneous networks, the more they used portal news on smartphones. Conversely, the more political discussion with heterogeneous networks, the more they used news site application on smartphones. The more frequently Internet and mobile phone were employed for news source and the more soft news genre was consumed, the more the portal news application was used. However, the more frequently traditional and social media were employed for news source and the more hard news consumed, the more news site application was used. The findings imply that portal news application users may increase their likelihood of soft news consumption using Internet and mobile phones for political discussion with close social relations, while news site application users may increase their likelihood of hard news consumption using traditional and social media for political discussion with distant social relations.

• 정보처리학회논문지D
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• 제11D권2호
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• pp.371-380
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• 2004

인터넷 기술의 급속한 발전과 함께 전자 상거래가 활성화되고 있다. 이러한 전자 상거래 응용의 핵심은 웹 기반 데이터베이스 응용이다. 현재는 데이터베이스 응용에 필요한 모든 폼과 질의 처리코드를 수동 또는 반자동으로 작성하므로 웹 응용 개발에 많은 시간이 소요된다. 따라서 웹 기반 데이터베이스 응용의 생산성 향상이 요구되고 있다. 본 논문에서는 데이터베이스부터 새롭게 생성해야 하는 응용과 기존 데이터베이스를 사용하는 응용의 생성을 위한 사용자 인터페이스 폼들과 이 폼들을 통해 이뤄질 질의를 처리하는 EJB 및 JSP 컴포넌트들을 자동으로 생성하는 도구인 WebSiteGen2를 소개한다. WebSiteGen2는 컴포넌트 기술을 기반으로 3-계층(3-tier) 구조를 가지는 응용을 자동 생성함으로써 웹 응용의 생산성을 향상시키고 확장성, 재사용성 및 이식성을 증대시킨다. 또한, WebSiteGen2가 생성하는 사용자 인터페이스 폼들은 질의의 대상인 개체 뿐 아니라 이와 직$.$간접으로 연관된 모든 개체들에 대한 정보를 한 폼에 제공한다. 본 논문에서는 WebSiteGen2의 기능 및 구현원리를 설명하고, 상용화된 타 웹 응용 생성기들과의 기능을 비교하여 WebSiteGen2의 장점을 설명한다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1998년도 봄 학술발표회 논문집(I)
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• pp.147-152
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• 1998

This study is to investigate the application of concrete with crushed sand on site. As a result, it is showed that the combined sand mixed with sea sand is very desirable for obtaining workability and strength of concrete, and the optimal replacement percentage of crushed sand is 50% with sea sand. After all, the crushed sand could be sufficiently used as a fine aggregate for concrete in the aspect of economical efficiency and quality, but the particle shape and microsand passing No.200 sieve should be firstly improved for increasing workability of concrete on site.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1993년도 가을 학술발표회 논문집
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• pp.124-131
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• 1993

A successful site application with 700kg/$\textrm{cm}^2$ ultra-high strength concrete was made by research team of Daewoo Institute of Construction Technology in Jinhae. Trial mixings of concrete, the productivity of batcher plant, the elapsed time and the pumpability had been investigated for the site condition, before the site application. As results, the efficiency of production by automatic batcher plant systems was improved and the method of quality control was estabilished for the security of fluidity due to the elapsed time, the pumping and consolidation and so on. The concrete strength cores as well as cylinders was showed more than 700kg/$\textrm{cm}^2$ for the required age. And this study would be provided valuable data base for the practical utilization of high strength concrete. Further, this study would be given new possibilities of high rise RC constructions.

• Agricultural and Biosystems Engineering
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• 제7권1호
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• pp.18-26
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• 2006

In-field site-specific nitrogen (N) management increases crop yield, reduces N application to minimize the risk of nitrate contamination of ground water, and thus reduces farming cost. Real-time N sensing and fertilization is required for efficient N management. An 'on-the-go' site-specific N management system was developed and evaluated for the supplemental N application to com (Zea mays L.). This real-time N sensing and fertilization system monitored and assessed N fertilization needs using a vision-based spectral sensor and controlled the appropriate variable N rate according to N deficiency level estimated from spectral signature of crop canopies. Sensor inputs included ambient illumination, camera parameters, and image histogram of three spectral regions (red, green, and near-infrared). The real-time sensor-based supplemental N treatment improved crop N status and increased yield over most plots. The largest yield increase was achieved in plots with low initial N treatment combined with supplemental variable-rate application. Yield data for plots where N was applied the latest in the season resulted in a reduced impact on supplemental N. For plots with no supplemental N application, yield increased gradually with initial N treatment, but any N application more than 101 kg/ha had minimal impact on yield.

• 한국생활과학회지
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• 제11권1호
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• pp.69-78
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• 2002

The purpose of this study was to investigate the application of fashion-related web sites and their evaluation. 76 college students major in fashion design were surveyed and the evaluation criteria were classified into five categories such as the accuracy/reliability, the design of a picture, the ease of application, the communication/security, and additional services. The results of this study were as follows: 1. College students used web sites mostly to search for fashion trend information from magazine and fashion information sites. 2. While the media site was excellent in the evaluation criteria such as the accuracy/reliability, the design of a picture and the communication/security, the fashion information site was excellent in the evaluation criteria such as the accuracy/reliability, communication/ security and additional services. 3. The media site and the fashion information site generally ranked high and the fashion brand site ranked low in most evaluation items. 4. By the results of ANOVA, 12 items showed significant differences out of the total 19 items. 5. Out of the total evaluation items, the design of a picture ranked highest and the external link function ranked lowest.

• Journal of Forest and Environmental Science
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• 제24권3호
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• pp.155-158
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• 2008

Site index is the essential tool for forest management to estimate the productivity of forest land Generally, site index equation is developed and used by relationship between stand age and dominant tree heights. However, there is a limit to use the site index equation in the application of variable ages, environmental influence, and estimation of site index for unstocked land. Therefore, it was attempted to develop a new site index equations based on various environmental factors including site and topographical variables. This study was conducted to develop regional site index equations based on the relationship between site index and soil factors for Pinus densiflora. Environmental factors that obtained from GIS application, were selected by stepwise-regression. Site index Equation was estimated by multiple regression from selected factors. Four environmental factors were selected in the final site index equations by stepwise regression. It was observed that coefficients of determination for site index equations were ranged from 0.34 which seem to be relatively low but good enough for estimation of forest stand productivity. The site index equations developed in this study were also verified to be useful by three evaluation statistics such as model's estimation bias, model's precision and mean square error type of measure.

• 콘크리트학회논문집
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• 제11권5호
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• pp.41-49
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• 1999

This study dealt with the applicability and quality control of the concrete using fly ash produced in combined heat power in a construction site. Firstly, chemical and physical characteristics of the fly ash produced in combined heat power plant re analysed. Also, after investigating the properties of flesh and hardened concrete through various experiments, the fly ash concrete was placed in depositing construction in Ulsan Petrochemical Service Co. This field application was focussed on the quality control system in the site as production, placing and curing of concrete. As the result of this study, the quantity of CaO in the fly ash is relatively high based on the chemical analysis. The fly ash concrete showed slumping maintenance and high viscosity properties in the optimal mixing conditions (W/B:44~45%, S/a:$45\pm$2%, W:185kg/m). And, quality control and assurance of the fly ash concrete in actual site were verified by various testing methods.

• 환경영향평가
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• 제12권3호
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• pp.151-160
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• 2003

Analysis of carrying capacity and site suitability by the systematic application of environmental information an provide a basis for implementing environmentally sensitive and sustainable resource development policies. Based on the availability of public services and environmental and site-specific constraints, a Rural Residential Density Matrix was applied in Santa Cruz County, California, USA to assess the development potential of rural land parcels since 1980. In one case, the Matrix was applied to calculate the allowable development density on a site in Lompico planned for use as a Buddhist retreat center. These calculations revealed higher environmental sensitivity and lower carrying capacity than projected in the proposed plan. Under the constraints of the county's minimum acreage policies and insufficient developable land, the developer cancelled the proposed plan. This example suggests that application of the Matrix at the concept development stage would increase the effectiveness of the prior environmental review and environmental impact assessment (EIA) system in Korea.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 C
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• pp.1891-1893
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• 2000

In this paper, we studied the diagnostic technique to analyze the deterioration of cast resin transformer using partial discharge detection for on-site application.