• 컴퓨터교육학회논문지
• /
• 제7권6호
• /
• pp.13-25
• /
• 2004

지식 정보화 사회에 컴퓨터 교육은 날로 그 중요성이 증대되어 왔다. 그러나 현재 중학교에서 컴퓨터교육은 재량활동 영역의 선택과목으로 운영되고 있다. 이러한 선택운영은 컴퓨터 교과의 경시 풍조를 가져오고, 이러한 운영으로 인한 부적절한 수업시수는 컴퓨터 교육의 현실성과 실효성을 떨어뜨리고 있다. 따라서 본 논문에서는 현재 운영되고 있는 다양한 형태의 선택 과목 운영 방법들을 비교 분석하고, 운영방식에 따라 나타나는 여러 가지 문제점을 파악하였다. 이러한 문제점을 분석하여 컴퓨터과목을 운영할 때 가장 적합한 방법을 찾아내고 학교교육에서 컴퓨터과목이 효율적으로 운영될 수 있는 방안을 제안하고자 한다.

• 대한영양사협회학술지
• /
• 제5권1호
• /
• pp.54-63
• /
• 1999

The purposes of this study were to investigate the perception and needs of community nutrition programs for 379 community residents of 23 health centers where the pilot community nutrition programs are intervening. The awareness rate of the nutrition programs was 54.3% and the reason of the awareness was mainly happened to know when visiting health centers'. More than 90% of the respondents responded that public health nutrition services are necessary. But the residents who experienced the nutrition services showed higher needs of the programs(97.3%) and improved the impression about the roles of health centers(93.6%). They also showed a higher rate of balanced dieting, stronger intentions to change their inappropriate eating style and a higher practicing rate. The more they believed in the provided nutrition information, the more they showed concerns about their diet and practicing rate of the advices from nutritionists. These results show the positive and successful impact of the pilot nutrition programs on the community residents. We need strategies for a more active improvement of the programs and to maintain more qualified public health nutritionists to carry out targeted community nutrition programs.

• 방송공학회논문지
• /
• 제12권4호
• /
• pp.350-359
• /
• 2007

In this paper we present a simple, efficient method for detection of sharp digital images. Recently many digital cameras are equipped with various autofocusing functions to help users take well-focused pictures as easily as possible. However, acquired digital pictures can be further degraded by motion, limited contrast, and inappropriate amount of exposure, to name a few. In order to decide whether to process the image or not, or whether to delete it or not, reliable measure of image quality to detect sharp images from blurry ones is needed. This paper presents a blurriness/sharpness measure, and demonstrates its feasibility using extensive experiments. This method is fast and easy to implement, and accurate. Regardless of the detection accuracy, existing measures are computation-intensive. However, the proposed measure in this paper is not demanding in computation time. Needless to say, this measure can be used for various imaging applications including autofocusing and astigmatism correction.

• 한국융합학회논문지
• /
• 제11권6호
• /
• pp.23-28
• /
• 2020

인터넷상의 소통을 위해 댓글 시스템은 필수적이다. 하지만 온라인상의 익명성을 악용하여 타인에 대한 부적절한 표현 등의 악성 댓글 또한 존재한다. 악성 댓글로부터 사용자를 보호하기 위해 악성/정상 댓글의 분류가 필요하고 이는 텍스트 분류로 구현할 수 있다. 자연어 처리에서 텍스트 분류는 중요한 주제 중 하나이고 최근 BERT 등 pretrained model을 활용한 연구와 GCN, GAT 등의 그래프 구조를 활용한 연구가 활발히 진행되고 있다. 본 연구에서는 실제 공개된 댓글에 대해 BERT, GCN, GAT 을 활용하여 댓글 분류 시스템을 구현하고 성능을 비교하였다. 본 연구에서는 그래프 기반 모델을 사용한 시스템이 BERT 대비 높은 성능을 보여주었다.

• 경영과학
• /
• 제17권3호
• /
• pp.61-71
• /
• 2000

Due to the potential growing capability that reflects future value, the market value of internet business companies (IB) are still evaluated high although major players like Amazon continuously suffer losses. Then, how do investors valuate the potential growing capabilities given that traditional financial/accounting based valuation approaches seem to be inappropriate for IB. This study attempts to provide an answer to this issue. We, therefore, analyzed the predictability of various accounting and non-accounting variables for IB value. These include book value, net income, unique visitors, page view, reach rate, public float and institutional holdings. Because of being in infant stage and difficulties in obtaining necessary web traffic data, sample of 20 pure IB were selected from Korea Stock Exchange Market, KOSDAQ, and informal market. The results of this study showed that web traffic date had the strongest relationship with IB value. In particular, unique visitors and reach rate were found to be best predictors for IB value while page view was reasonable indicator. Interestingly, net income was not found to related to IB value. This calls for an attention to the typical characteristics of IB that my hinder the usage of traditional valuation approaches for IB. Another results revealed that none of both public float and institutional holdings was significantly associated with IB value, indicating market’s supply-demand factors were less important than traffic information.

• Journal of Nutrition and Health
• /
• 제30권2호
• /
• pp.139-146
• /
• 1997

Use of the viamin-mineral supplements markedly increased with the awareness of diet and health. Data were collected from the self-administered questionnaire of 450 free living elderly, 60 to 94 years old, in Korea, to assess the relationships between socioeconomic variables, beliefs about nutrition, and the factors affecting gupplements usage. In addition, vitamin-mineral intakes through the supplements were calculated, and compared with RDA. 44.9% of the subjects took the vitamin-mineral supplements, and significantly higher percentage of women(49.3%) than men(38.1%) took supplements(p<0.05). The higher the education level, monthly pocket money, the percentage of supplements consumption was higher. People living in large cities took more supplements than those in small cities. One of the mainly cited reasons for taking supplements was to maintain health. The most favored nutrient supplements used by the subjects were in the order of vitamin B complex, vitamin E and Calcium, and vitamin-mineral intake through the supplements were much greater than RDA and ranges of their intakes were very wide. Vitamin B1 and vitamin E were observed to consume excessive amount(63 times of RDA and 40 times of RDA, respectively). The reasons for supplementation were often inappropriate and unreliable sources of information were used. Thus nutritional understanding and education of the elderly peopled are needed in regard to the use of vitamin-mineral supplements, and the relationship between adequate diet and good health.

• 한국농공학회논문집
• /
• 제53권6호
• /
• pp.7-16
• /
• 2011

This study discussed the applicability of satellite SAR (Synthetic Aperture Radar) imagery with regard to reservoir monitoring, and tried the extraction of reservoir storage from multi-temporal C-band RADARSAT-1 SAR backscattering images of Yedang and Goongpyeong agricultural reservoirs, acquired from May to October 2005. SAR technology has been advanced as a complementary and alternative approach to optical remote sensing and in-situ measurement. Water bodies in SAR imagery represent low brightness induced by low backscattering, and reservoir storage can be derived from the backscatter contrast with the level-area-volume relationship of each reservoir. The threshold segmentation over the routine preprocessing of SAR images such as speckle reduction and low-pass filtering concluded a significant correlation between the SAR-derived reservoir storage and the observation record in spite of the considerable disagreement. The result showed up critical limitations for adopting SAR data to reservoir monitoring as follows: the inappropriate specifications of SAR data, the unreliable rating curve of reservoir, the lack of climatic information such as wind and precipitation, the interruption of inside and neighboring land cover, and so on. Furthermore, better accuracy of SAR-based reservoir monitoring could be expected through different alternatives such as multi-sensor image fusion, water level measurement with altimeters or interferometry, etc.

• 한국정보컨버전스학회논문지
• /
• 제1권1호
• /
• pp.1-8
• /
• 2008

JXTA는 중앙 서버를 통한 관리가 필요 없고 네트워크에 연결되어 있다면 어떤 장치든 다른 장치들과의 통신이 가능하며, 이기종 P2P시스템들과의 통신이 가능하다는 특징들이 가지고 있다. 이러한 특징을 최대한 활용하면서 서로 상이한 프로토콜과 API를 사용하여 만들어진 P2P시스템간의 상호연동을 가능하도록 하기 위한 데이터 교환 시스템을 설계하였으며, 설계된 시스템의 중요한 모듈은 생성된 요청과 요청에 대한 응답을 파싱하는데 이용하는 XML Parser Component(XPC), 적절한 요청과 응답을 생성해 내는데 사용하는 XML Making Component(XMC)의 구조를 설명한다.

• 지구물리와물리탐사
• /
• 제5권3호
• /
• pp.193-198
• /
• 2002

시추공간 파선 토모그래피에 있어서 결과물로 얻어지는 지하의 속도구조를 왜곡시키는 요인으로는 source static, 초동발췌오차 및 부적절한 초기속도 모델에 의한 국부적인 최소값으로의 수렴 등으로 요약된다. 본 논문에서는 이러한 오차생성 요인들 중에서 source static을 자동으로 보정해주는 알고리즘을 소개하고 있다. 소개된 알고리즘은 발췌된 초동자료의 송신기방향으로의 변화를 이용하여 정보정을 자동으로 계산하는 방법으로서, 실제 자료에 대해 적용해 본 결과 매우 만족스러운 결과를 보였으며, 사용자로 하여금 일관되며 자동적인 정보정 적용으로 인해서, 보다 신뢰할 수 있는 속도구조를 얻는데 도움을 줄 수 있을 것으로 예상된다.

• 농촌지도와개발
• /
• 제13권2호
• /
• pp.299-312
• /
• 2006

This study reported on the cases about gender inequality in agriculture. Generally women have experienced something in vague situation as unequal to men in rural and agriculture. Despite of some women's have been complaining about this problem, it is not easy why and how many times they have been suffering. In this report, to get the information of gender unequality in agricultural laws and policies, the data was gathered by two steps. The first step, 175 cases into nine types was collected from leaders of several women farmer's associations, and after that, 60 cases selected to be interviewed by a specialist panel. The second step, it was analyzed the interviewed 60 cases based on real conditions compared with laws of items of policies. Among the cases, it was analyzed 8 rural women's who had been experienced to receive the inappropriate compensation in an unexpected accidents. From these cases, it was drew up some suggestions as follows; to make a rule to certify of the identity of woman farmer, and to build in a monitoring system of gender equality in agriculture.