• Journal of the Korean Data and Information Science Society
• /
• v.24 no.1
• /
• pp.117-124
• /
• 2013

Association rule of data mining techniques is the method to quantify the relationship between a set of items in a huge database, andhas been applied in various fields like internet shopping mall, healthcare, insurance, and education. There are three primary interestingness measures for association rule, support and confidence and lift. Confidence is the most important measure of these measures, and we generate some association rules using confidence. But it is an asymmetric measure and has only positive value. So we can face with difficult problems in generation of association rules. In this paper we apply the similarity measures by probabilistic interestingness measure (PIM) with all marginal proportions (AMP) to solve this problem. The comparative studies with support, confidences, lift, chi-square statistics, and some similarity measures by PIM with AMPare shown by numerical example. As the result, we knew that the similarity measures by PIM with AMP could be seen the degree of association same as confidence. And we could confirm the direction of association because they had the sign of their values, and select the best similarity measure by PIM with AMP.

• Journal of the Korean Chemical Society
• /
• v.59 no.5
• /
• pp.445-453
• /
• 2015

In 2005, descriptive assessment was introduced to increase students’ higher mental ability like problem-solving ability and creativity. Every year the ratio of descriptive assessment increases and it is regarded as an alternative evaluation to a multiple-choice item which measures simplicity knowledge. Externally the descriptive assessment took a root in school, but we can’t say definitely that it meets its original goal. In this paper, science descriptive assessment items of 5 middle schools in Gyeonggi-do were analysed; examiners was interviewed about how well they understood the characteristic of the assessment items. According to the analysis, characteristic of the items are ① unequal distribution of unit, ② difference of item’s type by unit, and ③ disappearance of measuring higher mental ability. It is considered that there are several factors of these characteristic - the lack of teachers’ ability to make assessment item; understanding of assessment instrument. These factors can be explained by the lack of assessment expertise. So the society’s effort is needed to raise teacher’s ability for the descriptive assessment.

• KDI Journal of Economic Policy
• /
• v.11 no.1
• /
• pp.3-30
• /
• 1989

본(本) 연구(硏究)에서는 원화(貨)의 평가절상(平價切上)이 산업별(産業別) 생산(生産), 가격(價格), 고용(雇傭), 무역(貿易) 등에 미치는 영향을 한국경제(韓國經濟)의 일반균형모형(一般均衡模型)을 통하여 분석하였다. 분석결과에 의하면 평가절상(平價切上)의 효과(效果)는 산업(産業)의 수요(需要), 공결탄성치(供結彈性値), 수출비율(輸出比率), 수입품과의 대체성(代替性), 부가가치비율(附加價値比率) 등 산업(産業)이 갖는 특성에 따라서 매우 상이(相異)하게 나타남을 알 수 있었다. 혁제품, 고무제품, 섬유 직물, 조선, 의복 등의 산업에서 생산감소효과(生産減少效果)가 큰 것으로 나타나고 있으며 석유제품, 철1차제품, 비철금속1차제품, 화학제품 등의 산업에서 가격하락효과(價格下落效果)가 큰 것으로 밝혀졌다.

• Journal of Acupuncture Research
• /
• v.20 no.3
• /
• pp.209-216
• /
• 2003

목적 : 대표적인 motor neuron disease(MND)이면서 가장 치명적인 신경퇴행성 질환인 ALS의 발생 양상과 한방치료효과에 대하여 연구하였다. 방법: 상지대학교 부속 한방병원에 래원한 ALS 환자들의 성별, 연령, 발병일, 발병양상, 래원 당시의 병태양상 등을 분석하였고, 이 중 3개월 이상 입원치료를 통하여 치료과정 평가가 가능하였던 18명의 환자들의 치료 전과 치료 후의 변화양상을 평가하였다. 결과 : 외국의 보고에 비하여 여성 환자가 많았고 발병 연령도 유의하게 낮았으며 상지에서 최초의 증상이 발현되는 비율이 상대적으로 높았다. Bulbar From의 비율도 높았고, 대부분의 환자가 여성인 것도 특이하였다. 환자들이 생각하는 질병의 발생원인 중 약 80%가 stress나 정신적 충격 등을 지적하여 정신적 불안상태가 유관함을 추정할 수 있었다. 한방치료가 ALS를 호전시키지는 못하였으나 진행을 억제하였고, 국소적인 주소증을 완화시키며 심리적 안정 상태를 유지하는데 도움이 된다고 평가되었다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2010.06c
• /
• pp.458-462
• /
• 2010

본 논문은 X-선 혈관조영영상에서 기울기 정보 및 최대 빈도수를 이용한 카테터 자동 분할 방법을 제안한다. 제안방법은 세 단계로 이루어진다. 첫째, 분할하고자 하는 카테터 관심영역을 설정하고, 영상의 대조대비를 높이기 위한 밝기값 스트레칭을 수행한다. 둘째, 카테터 후보 경계점을 추출하기 위하여 카테터 방향을 고려한 경계 강조 마스크를 영상에 적용한다. 셋째, 카테터 후보 경계점에서 기울기가 크고 최대 빈도수 직경을 갖는 카테터 경계점을 추출하고 이들을 선형 보간하여 최종 카테터 경계를 분할한다. 제안 방법의 평가를 위하여 육안 평가 및 전문가가 수동 분할한 결과와 본 제안방법을 적용하여 얻은 중복 영역 비율과 평균 거리 차이를 측정한 정확성 평가를 수행하였고, 수행시간을 측정하였다. 실험결과 중복 영역 비율은 93.9%${\pm}$2.7%, 평균 거리 차이는 0.116-픽셀, 수행시간은 평균 0.011초로 측정되었다.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.15 no.5
• /
• pp.160-168
• /
• 2011

As importance of the field of maintenance and management come to the fore because of collapses of the Seongsu bridge and the Sampoong department store, "Special Act for the Safety Control of Public Structures" was established in 1995 and the major maintenance and management system began taking effect "Detailed inspection and Precision safety diagnosis". However, a technical standard of "Detailed inspection and Precision safety diagnosis" was low because its history was not long, and also the results of research were not enough so anxiety for "Insufficient Detailed inspection and Precision safety diagnosis" was continuously left. While its evaluation system introduced in 2002, the ratio of "Insufficient Detailed inspection and Precision safety diagnosis" has been getting lower. However, according to the evaluation result after carrying out "Detailed inspection and Precision safety diagnosis" recently, it seems difficult to become lower for the ratio of "Insufficient Detailed inspection and Precision safety diagnosis" in future. Therefore, it is considered of questionary survey of the concerned organization and the mechanism side in connection with "Insufficient Detailed inspection and Precision safety diagnosis". So it is arranged the fundamental problems caused by an "Insufficient Detailed inspection and Precision safety diagnosis" that is to show the improving direction of the existing evaluation system in a based on this.

• Journal of the Korea Society of Computer and Information
• /
• v.13 no.1
• /
• pp.261-272
• /
• 2008

The primary research objects of this study is to evaluate an importance of supplier selection factors as an index according the level of product standardization and to present the evaluation model for supplier selection. For this purpose, this study adopts the AHP method to calculate the importance of supplier selection factors. In this study 16 factors which affect on the supplier selection decision making are classified into three factors-product supply related factor, product related factor, management ability related factor. Results also indicate that standardized products are much more dealt by means of on-line compare to customized products. It means the buyer opportunities is potentially an increase in the amount of current supplier re-evaluation, which may lead to new suppliers being considered more often.

• Korean Journal of Environmental Agriculture
• /
• v.21 no.4
• /
• pp.279-285
• /
• 2002

Pesticide residues in some fruits collected at Noeun wholesale market, Daejeon were surveyed and assessed its risk. In 120 samples, the detection rate of pesticide was 70.8% and the rate exceed MRL was 1.67%. Highly detection rate of commodities was apple, peach and grape. Organophosphorus, organochlorine and pyrethroid insecticide were found with similar rate relatively, but most of fungicides were procymidone(dicarboximides) and chlorothalonil(organochlorine). The order of detected pesticide were chlorothalonil, chlorpyrifos, fenvalerate, procymidone, deltamethrin and EPN. In order to assess risk estimated intake amount of each pesticide was compared to ADI. Although some peach were exceed MRL the total amount and uptake pesticides was less than 1.22% comparing to ADI.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.10 no.2
• /
• pp.125-131
• /
• 2002

This study was carried out to evaluated for dewaterability of sewage sludge using waste oystershell and loess. The Jar-Test and the Buchner funnel test were proceeded for the assessment of dewaterability of a thickened sludge and digested sludge. TTF(Time to Filter), SRF(Specific Resistance to Filtration) were adopted as the valuation indices of sludge dewaterability. Dewatering conditioner which composed of both oystershell and loess is much dewaterable than the one composed of only oystershell. In the course of combining with oystershell and loess, the following fact was found that the dewaterability of the combination which have the higher ratio of oystershell than that of loess is superior. The most suitable oystershell :loess ratio of dewatering conditioner is 9:1 in treating both thickened sludge and digested sludge.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.30 no.4
• /
• pp.27-40
• /
• 2022

In this study, the anaerobic digestion potential and thermo-chemical pre-treatment were evaluated for efficient anaerobic co-digestion of dewatered sludge(DS) and food waste(FW). As a result, the degradable organic matter concentration and methane yield of FW were evaluated to 2.2 and 1.3 times higher than that of DS, respectively. In order to increase the amount of biogas production, it was determined that it is desirable to increase the mixing ratio of FW. The efficiency of thermo-chemical pre-treatment was evaluated for the reaction temperature, NaOH concentration, reaction time and mixture ratio. As a result of evaluation through pre-treatment efficiency and dehydration capacity, the optimum pre-treatment conditions were evaluated as follows: reaction temperature 140℃, NaOH concentration 60 meq/L, reaction time 60 min, mixture ratio 1:5(DS:FW). The gas production rate and methane yield increased 1.6 and 1.5 times, respectively, compared to before and after applying the optimum pre-treatment. Therefore, it is necessary to increase the mixing ratio of food waste for efficient anaerobic co-digestion of DS and FW. and it is necessary to increase the solubilization efficiency of waste by application of pre-treatment.