• Journal of Information Processing Systems
• /
• 제7권2호
• /
• pp.355-362
• /
• 2011

Since two-way interactive broadcasting service began, remote controls have been fitted with 4 color buttons, which enables interaction and convenience to increase between users and content. Currently, diverse studies on IPTV are in progress. Particularly, as the mobile market rapidly grows, studies on mobile IPTV and on linkage with other media are constantly increasing. However, mobile IPTV has never been studied until now. In that sense, this present study attempted to design a mobile-based IPTV UI that could use a multi-dimensional search method based on consistent criteria for content search. As a result, the proposed IPTV UI is fitted with more usability and functionality for 4 color buttons. The UI designed in this study was compared to the IMDb Android Application, which uses GOMS-KLM. The results showed that the performance process was reduced by three stages, and that the performance time was reduced by more than 17.9%. Therefore, the conclusion can be reached that the proposed UI is effective for a fast search of contents.

• 한국연초학회지
• /
• 제16권2호
• /
• pp.128-133
• /
• 1994

This study was carried out to get agronomic information about the tobacco culture in paddy soil where incidence of grey tobacco leaves used to appearly uptake of iron, manganese and chlorine due to soil acidity and high water level. Application of lime to paddy soil(pH5.4-5.6) reduced content of iron, manganese known as proceeding materials giving rise to variegated grey tobacco after curing, compared with non-treatment. Grey leaves were found mainly at lower and middle stalk positions, and incidence of grey tobacco was lowered by application of lime in the well drained field but was not affected by level of fertilizer application. Amendment of soil acidity by lime tended to decrease chlorine and manganese content in leaves. Nicotine and mangenese content of leaves were lowered by reduction of one-quarter fertilizer level. In case of lime treatment, increase of yield reached to 4-6% comparing with those of non-treatment but price per kg was not affected. Reduction of N fertilizer level to three-quarters had the equal yield but high quality of leaf comparing with standard fertilization in paddy field.

• 한국초지조사료학회지
• /
• 제8권3호
• /
• pp.152-157
• /
• 1988

The effect of gypsum application was tested on dry matter yield, sulfur uptaken, composition of Ritrogen compound and sulhr compound and sulfur balance in mixed pasture. Total dry matter yields and sulfur uptake by grasses increased with the increasing of gypsum application rates. The ratios between total nitrogen and total sulfur in masses decreased with the increase of sulfur uptake at 2nd and 3rd cutting times. Cysteine content was little affected by gypsum while methionine content slightly increased an 4.0, 6.0 kg3 per 10a levels at 2nd and 3rd cutting times. The uptake of nitrate nitrogen decreased with gypsum application and dry matter digestibility increased about 1.1 to 3.3%. The soil pHs after experiment become high in surface and subsoil till 6.0 kg.S per 10a, but low at 10.0 kg.S per 10a. The content of sulfur in surface soil was 19.9 ppm after experiment, but very high in subsoi1,ranging from 94 to 143 ppm.S. Sulfur leached from the surface soil by 0.69, 2.39, and 6.24 kg.S per 10a in the plots of 4.0, 6.0, and 10.0 kg.S per 10a, respectively.

• 말소리와 음성과학
• /
• 제12권4호
• /
• pp.19-25
• /
• 2020

This study examined thirty-one Korean students' pronunciation of an English passage using a speech recognition application, Speechnotes, and two Canadian raters' evaluations of their speech according to the International English Language Testing System (IELTS) band criteria to assess the possibility of using the application as a teaching aid for pronunciation education. The results showed that the grand average percentage of correctly recognized words was 77.7%. From the moderate recognition rate, the pronunciation level of the participants was construed as intermediate and higher. The recognition rate varied depending on the composition of the content words and the function words in each given sentence. Frequency counts of unrecognized words by group level and word type revealed the typical pronunciation problems of the participants, including fricatives and nasals. The IELTS bands chosen by the two native raters for the rainbow passage had a moderately high correlation with each other. A moderate correlation was reported between the number of correctly recognized content words and the raters' bands, while an almost a negligible correlation was found between the function words and the raters' bands. From these results, the author concludes that the speech recognition application could constitute a partial aid for diagnosing each individual's or the group's pronunciation problems, but further studies are still needed to match human raters.

• 한국지반공학회논문집
• /
• 제31권2호
• /
• pp.39-46
• /
• 2015

불포화토의 함수비 변화에 따라 유전상수는 민감하게 변화하므로, TDR 프로브를 이용하여 유전상수를 측정함으로써 흙의 체적함수비를 산정하기 위한 연구가 여러차례 시도되어 왔다. 본 연구에서는 불포화지반의 깊이에 따른 함수상태를 획득하기 위하여 관입형 TDR 프로브(TDRP)를 개발 및 현장적용을 수행하였다. 개발된 TDRP는 콘, 주면부, 롯드, 그리고 해머 및 가이드로 구성된다. 지반의 유전상수를 측정하기 위한 세개의 전극은 주면부의 표면에 설치되었으며, 세개의 전극은 동축선과 연결한 후, reflectometer에 연결하여 TDRP 측정 시스템을 구성하였다. 체적함수비-유전상수의 관계를 결정하기 위하여, 실내실험에서 체적함수비 변화에 따른 주문진사의 유전상수를 측정하였다. 실험결과, 체적함수비-유전상수의 관계는 프로브의 설치방식에 관계없이 3차 다항식으로 결정되었으며, 시료의 체적함수비와 높은 상관성을 나타내었다. TDRP의 현장적용실험은 현장에서 소형 sampler로 채취된 시료의 중량함수비 결과와 비교 및 분석되었으며, TDRP로 산정된 체적함수비와 유사한 경향을 보였다. 본 연구에서 개발된 관입형 TDR 프로브는 관입심도에 따라 대상지반의 체적함수비를 효과적으로 평가할 수 있을 것으로 판단된다.

• 한국환경농학회지
• /
• 제10권1호
• /
• pp.21-25
• /
• 1991

방사성(放射性) 물질(物質)을 오염(汚染)시킨 토양(土壤)에 무우와 배추를 pot 재배하면서 질소와 인산시비(燐酸施肥)에 따른 $^{90}Sr$ 흡수양상(吸收樣相)을 조사하였다. 질소와 인산시비(燐酸施肥)는 무와 배추의 수량증수(收量增收) 효과가 있었으며 무우는 질산태질소가, 배추는 암모니아태질소가 더욱 효과적이었고 인산시비(燐酸施肥)는 식물체의 K 함량을, 질소 시비(施肥)는 Ca함량을 증가시켰다. 또한 배추에 비해 무가 $^{90}Sr$ 흡수량(吸收量)이 높았고 질소와 인산시비(燐酸施肥)는 $^{90}Sr$ 흡수(吸收) 억제효과(抑制效果)가 있었으며 암모니아태 질소보다는 질산태질소가 더욱 효과적(效果的)이었다.

• Journal of information and communication convergence engineering
• /
• 제18권1호
• /
• pp.22-27
• /
• 2020

Content centric networking (CCN) is regarded as promising internet architecture because it can provide network efficiency in terms of bandwidth consumption by separating contents from a specific network location and decrease network congestion events. However, the application of a CCN does not widely consider the side effects of mobile devices, particularly mobile content sources. For content source mobility, a full routing update is required. Therefore, in this study, a route optimization scheme is proposed for mobile content sources in a CCN environment to provide low communication overhead, short download time, and low resource consumption. The proposed scheme establishes a direct path between content requesters and a mobile content source for the exchange of interest and data packets using interest-piggybacked data packets. Based on the inherent CCN naming characteristics, the content source does not know the name prefix of the content consumer, and thus the proposed optimized CCN scheme utilizes the content router in the home domain of the content source.

• 한국환경복원기술학회지
• /
• 제7권6호
• /
• pp.39-48
• /
• 2004

The purpose of this paper was to confirm the application of the equation of the soil-water characteristic curve on an unsaturated soil. To this ends, a series of suction test was conducted on the selected 4 kinds of soil which is located in Korea, using the modified pressure extractor apparatus. And it was carried out to analyze the experimental parameters which can describe the soil-water characteristics, were determined by using the data obtained from the experiment. From the results, it was found that the matric suction was varied according to the grain size distribution, amount of fine grain particle and void ratio. Also it was found that the residual volumetric water content was decreased with the void ratio, but the index related air entry value, the soil parameter related water content and the parameter with residual water content were increased with the void ratio. And the application of equation of the soil-water characteristic curve was confirmed for the various conditions and the various state by the comparison between the volumetric water content measured by the experiment and the predicted values.

• 한국작물학회지
• /
• 제45권4호
• /
• pp.221-226
• /
• 2000

This experiment was designed to assess changes in yield difference between waxy (IWR) and non-waxy (INWR) near isogenic rice by evaluating the translocation and accumulation of assimilates in different parts of the rice plants after heading stage under different fertilizer application. Nitrogen content of culm in both IWR and INWR decreased rapidly from 35 days before heading to flowering time and after then it was maintained constantly, while the nitrogen content of leaf blade was continually reduced. Sugar content of leaf blade in IWR decreased steadly by 10 days after heading, but that in INWR increased 20 days after heading. There was no difference in starch content of culum between IWR and INWR from 35days before heading to heading, but that of culm of IWR increased again after heading. Dry weight of IWR plant was less reduced during ripening as compared with INWR. The dry weight of culm was not significantly different between two isogenic lines.

• 한국인터넷방송통신학회논문지
• /
• 제24권1호
• /
• pp.43-48
• /
• 2024

본 연구는 최근 소비자의 경험을 자극하여 설득효과를 높이고 있는 모바일 어플리케이션의 효과를 살펴보고자 하였다. 특히 상업적 목적이 아닌, 공익적 목적의 콘텐츠들이 사용자의 태도와 신념에 어떠한 영향을 미치는지 확인하고자, 모바일 어플리케이션의 특성으로 상호작용성과 공익성을 선정하여 그 관계를 살펴보았다. 실제 어플리케이션 중 하나를 연구대상으로 선정하여 이를 체험한 피험자들의 반응을 조사하였다. 그 결과, 모바일 어플리케이션의 상호작용성과 공익성은 콘텐츠태도와 제품신념에 직·간접적인 영향력을 미치는 것으로 나타났으며, 콘텐츠태도가 신념에 영향을 줄 수 있음을 확인하였다. 이러한 연구결과는 수용자의 콘텐츠 태도를 강화함으로써 인식구조에 영향을 미칠 수 있음을 보여준다.