• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제9권5호
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• pp.153-160
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• 2020

산업용 에너지 소비 예측은 에너지 수요와 공급에 동적이고 계절적인 변화가 있기 때문에 에너지 관리 및 제어 시스템에서 중요한 위치를 차지한다. 본 논문은 철강 산업의 에너지 소비 예측 모델을 제시하고 논의한다. 사용되는 데이터에는 후행 및 선도적인 전류 반응 전력, 후행 및 선도적인 전류 동력 계수, 이산화탄소(TCO2) 배출 및 부하 유형이 포함된다. 테스트 세트에서는 (a) 선형 회귀(LR), (b) 방사형 커널(SVM RBF), (c) Gradient Boosting Machine (GBM), (d) 무작위 포리스트(RF). 평균 제곱 오차(RMSE), 평균 절대 오차(MAE) 및 평균 절대 백분율 오차(ME)의 네 가지 통계 모델을 사용하여 예측하고 평가한다. 회귀 설계의 효율성 모든 예측 변수를 사용할 때 최상의 모델 RF는 테스트 세트에서 RMSE 값 7.33을 제공할 수 있다.

• Child Health Nursing Research
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• 제8권3호
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• pp.291-301
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• 2002

This study was performed to develop a scale of maternal conflict based on already established scales and the literature review. The major purpose of this study was to develop a scale of which contains difficulties which mother can feel to rearing her child and can be applied to mothers at home or employed mothers. 68 items were developed. For content validity test, the items were examined by 7 experts panel with Likert 4 scale. The 39 items were selected as high validity from 86% of the experts. The item number of each area and the misunderstanding words were corrected by advices of experts. 10 mothers again examined 39 items in order to correct the misunderstanding words and the long sentences. For reliability and factor analysis of 39 items, 496 mothers participated. 34 items were chosen because 5 items that corrected item-total correlation coefficient were lower than 0.2 were excluded by the result of reliability analysis. Factor analysis was done with 34items. 6 factors were classified higher than eigen value 1.0, 28 items were chosen because 6 items that factor loadings were lower than 0.4 were excluded. These factors were named as employment and caring for child(6 items), child education(5 items), support system for caring for child(4 items), interaction with mother and child(4 items), view of maternal role(5 items) and me as human being(4 items). Reliability analysis was done with 28 items. 1 item(36 number of factor 1) was excluded because corrected item-total correlation coefficient were lower than 0.2. Therefore, 27 items were chosen. Maternal Conflict Scale was contained 27 items. The corrected item-total correlation coefficient of 27 items were ranged from .2345 to .5240 and Cronbach alpha coefficient of those was .8207 by the results of reliability analysis. It can be evaluated that this scale had a high validity and reliability because of passing through an objective process of test.

• 한국융합학회논문지
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• 제8권4호
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• pp.79-87
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• 2017

본 연구는 청소년 외모만족도, 자존감 및 문제해결력의 융합적 관계를 파악하기 위한 서술적 조사연구이 다. 연구대상은 J시 소재 2개 중학교 재학생 158명이었다. 연구 대상자의 외모만족도, 자존감, 문제해결력, 일반적 특성을 조사하였고, 자료수집은 2016년 9월 26일부터 10월 14일까지였다. 수집된 자료는 t-test, ANOVA, Pearson's correlation coefficient으로 분석하였다. 연구결과 외모만족도, 자존감 및 문제해결력 정도는 중간이상이 었고, 문제해결력은 외모만족도(r=.602 p<.001), 자존감(r=.881, p<.001)과 유의한 양의 상관관계가 있는 것으로 나타났다. 따라서 문제해결력을 높이기 위해 외모만족도, 자존감을 향상시킬 수 있는 중재프로그램 개발과 융합적 접근이 요구된다.

• 대한치과기공학회지
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• 제16권1호
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• pp.12-42
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• 1994

The study objected to the 36persons out of 55 persons who have registered under the association of the professor of department of Dental Laboratory Technology to grasp contents of May, 1992, and objected to the 74persons out of 100persons who have registered under the association of an a lumni of Department of dental Laboratory Technology, Jisan Junior college to grasp contents about improvement of dental laboratory technology, Jisan Junior College to grasp contents about improvement of the national practical examination in the dental technician of the present day of May, 1994 and its results which we have acquired by this study were as follows : There are lots of opinions who have required the necessities to enforce for a national practical examination in the dental technician. A sense of satisfaction forward the system of a national practical examination in the dental technician appeared as unsatisfaction and it's unsatisfaction decreased from evaluation me operation method, the makes of questions, selection of a markers, distribution of marks of a practical examination. The operation method of a practical examination have appeared the opinions which they wished the present system. A date of operation a practical examination have appeared the opinion of which they preferred late in February. The distribution of marks of a practical examination have appeared the opinions which they wished the present system. The problem of the makes of questions of carving test which derived by an out flow of cast appeared which 52.7 percent(58 persons), lack of objectivity and lack of a standard evaluation appeared which 40 percent(44 persons), and lastly appeared. 5.5 percent(6 persons) with partiality of a questions. The problem of the makes of question of Q-test which derived by lack of a standard evaluation appeared which 44.5 percent(49 persons), lack of objectivity appeared which 39.1 percent(43 persons).

• 한국산학기술학회논문지
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• 제17권1호
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• pp.485-492
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• 2016

본 연구는 도시와 농촌지역의 지역별 치매에 대한 지식, 태도 및 예방활동을 파악하기 위해 시도하였다. 연구대상은 1개 도농복합시의 복지관과 보건소를 이용하는 노인 483명이었다. 자료수집은 치매에 대한 지식, 태도 및 예방활동에 대한 설문지를 사용하여 조사하였다. 수집된 자료는 SPSS 19.0을 이용하여 빈도와 백분율, 평균과 표준편차, t-test와 일원변량분석을 실시하였다. 연구결과를 보면, 도시와 농촌지역에서 70세 이상, 배우자가 없고 교육 수준이 낮고 수입이 적은 노인이 치매태도 점수가 더 높았다, 또한 자신의 건강이 나쁘다고 인지하는 노인이 치매 태도 점수가 더 높았다. 그러므로 치매 예방활동을 강화하기 위하여 노년기 초기에 배우자나 가족을 동반한 치매지식, 태도, 예방활동을 위한 교육 및 프로그램 운영을 강화 할 필요가 있다.

• Nuclear Engineering and Technology
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• 제17권1호
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• pp.25-33
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• 1985

경수형 원자로의 운전과 안전성 해석을 위해 열수력학적 모형을 개발하는 것이 하나의 중요한 과제이다. 특히, 2상류의 열수력학적 모형을 개발하기 위해서는 기포율, 액체막 두께, 유동 영역과 같은 중요한 변수들을 실제로 측정한 값이 필요하다. 본 연구의 목적은 초음파 Pulse-echo 방법을 이용하여 액체 두께를 실험적으로 측정하고, 이론치와 비교 분석하여 (1) 관벽의 두께, (2) 초음파의 주파수, (3) 관벽의 재질 등이 액체막 두께 측정에 미치는 영향을 분석하는 데에 있다. 평판협 (Plate-type)과 관(Tube-type)으로 된 시험관을 이용하여 수평으로 놓인 물-공기의 층류계 (a horizontal airwater stratified system)를 만들어 일련의 액체막 두께 측정 실험을 수행하였다. 시험관의 벽 두께와 초음파 Pulse-echo 의 주파수를 변화시키면서 액체막 두께 측정을 반복하였다. 또한, 관벽의 acoustic impedance가 초음파 Pulse-echo 방법으로 액체막 두께를 측정할 때, 어떠한 영향을 주는가도 아울러 파악하기 위해서 스텐레스 강과 폴리아크릴 (Polyacrylate) 등 재질이 다른 두 개의 격리봉 (Standonff rod) 을 사용하여 액체막 두께를 측정하였다. 이렇게 하여 얻은 실험 결과를 제시하고 실제로 측정한 액체막 두께와 비교 분석하였다.

• 보건의료산업학회지
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• 제12권2호
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• pp.63-73
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• 2018

Objectives : This study aimed investigate general characteristics, vaccination status and health beliefs related to vaccination for herpes zoster and to identify variables. Methods : The structured questionnaire was conducted from March 31, 2016 to April 20, 2016 with 312 outpatients who visited a university hospital. The data were analyzed by frequency analysis, t-test, $x^2-test$, correlation analysis and logistic regression analysis via SPSS statistics 22.0. Results : The vaccination rate of the herpes zoster was 16.0% and the vaccination cost was the most common reason for rejecting inoculation. More highly educated people with more than a university degree(OR=4.28, p=.002), those with higher susceptibility to herpes zoster(OR=1.56, p=.000), those more aware of the benefits of vaccination(OR=1.51, p=.009) and those with lower disability for vaccination(OR=0.74, p=.003) were more likely to be vaccinated. Conclusions : Therefore, to increase the vaccination rate of herpes zoster in adults over 50 years old, continuous publicity and education are needed to emphasize the susceptibility of herpes zoster and the benefit of vaccination. In addition, it is necessary to develop policies at the national level for the expensive vaccination cost that obstructs vaccination.

• 대한건축학회논문집:구조계
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• 제34권1호
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• pp.61-68
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• 2018

Recently, concentration of fine and ultra-fine particulate matter(PM) has been increased in KOREA. The increase of PM in KOREA is due to increase of domestic industries and yellow dust from china. PM is known to cause diseases such as dyspnoea, asthma, arrhythmia. Since PM is harmful to human, KOREA Ministry of Environment(ME) warns people to stay indoors when the outdoor PM concentration is high. However, prior studies has shown that indoor PM concentration can be relatively high when outdoor PM concentration is high due to infiltration of PM into buildings though leakage areas. In this study, airtightness, indoor and outdoor pressure difference and PM 2.5 & 10 concentration were measured in an apartment complex to observe PM infiltrating into building. Field measurement was conducted in newly-built apartment buildings to avoid the influence of indoor PM which can be generated by residents. The airtightness test was conducted to identify the leakage areas of the apartment, such as electric outlets and supply/exhaust diffusers. The airtightness test result showed that the air leakage area of the building was dominant in buildings envelop. According to indoor and outdoor pressure difference measurement result and PM concentration measurement result, it can be concluded that outdoor PM can infiltrate into indoor by leakage areas when wind is blown toward the apartment. As a result, pressure difference formed by the external weather condition and architectural characteristics such as the airtightness in building can influence PM to infiltrate into buildings. In further studies, I/O ratio, stack-effect, infiltration and penetration factor will be considered.

• Physical Therapy Rehabilitation Science
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• 제12권1호
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• pp.62-71
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• 2023

Objective: Stroke patients need the training to adjust their posture and maintain balance is necessary to restore movement function, and unstable support training is one of the appropriate training. In this study, a systematic review and meta-analysis were conducted to find out the effects of unstable surface training on balance and gait in stroke patients. Design: Systematic review and meta-analysis Methods: After creating a search expression referring to MeSH and EMTREE, the literature from 1976 to February 2022 was searched in the databases of PubMed, EMBASE, and Cochrane Library CENTRAL. A total of 331 studies were searched from three databases, and 11 studies were finally selected according to the inclusion criteria. Unstable surface training included studies using balance trainer, Whole-body vibration, and sand surfaces. Results: The results were found to be d=2.28 (p=0.02) and the effect size was 0.36 (95% CI: 0.05, 0.67) on the Berg Balance Scale. In the Kinesthetic Ability Trainer static balance, d=2.59 (p=0.01) and the effect size was 1.01 (95% CI: 0.24, 1.78). Timed Up and Go test showed that d=2.18 (p=0.03) and the effect size was 0.38 (95% CI: 0.04, 0.72). At the gait speed, d=0.99 (p=0.32) and the effect size was 0.15 (95% CI: -0.15, 0.45). In the 6-minute walk test, d=0.14 (p=0.89) and the effect size was 0.04 (95% CI: -0.47, 0.55). Conclusions: In this study was found that training was effective in balance if it became unstable in standing posture. Therefore, unstable surface training can be used to improve the balance of stroke patients in clinical practice.

• 농업과학연구
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• 제2권1호
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• pp.61-100
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• 1975

수도재배(水稻栽培)에 있어 작중토(作中土)의 유효규산함량(有效珪酸含量), ppm과 유기물함량(有機物含量)% 비(比) $SiO_2$/O.M. 근거(根據)한 N 적량(適量) 추정식(推定式) $Nkg/10a=(4.2+0.096\;SiO_2/O.M.).F$에서 N시비량(施肥量)을 추정(推定) 시용(施用)할 때의 적정(滴定) 가리(加里) 시용량(施用量) 추정식(推定式) $K_2Okg/10a=(K_O/\sqrt{Ca+Mg}-Ks/\sqrt{Ca+Mg})\sqrt{Ca+Mg}{\cdot}47{\cdot}BD$ 단 (但) $K_O/\sqrt{Ca+Mg}=0.03158+0.0007658\;SiO_2/O.M.$ $K_S/\sqrt{Ca+Mg}=Kme/100g/\sqrt{(Ca+Mg)}me/100g$의 타당성(妥當性) 여부(如否)를 판단(判斷)하기 위하여 3수준(水準)의 규회석처리(珪灰石處理)를 주구(主區)로하여 작토중(作土中)의 $SiO_2$/O.M. 비(比)를 증대(增大) 시키고 각주구별(各主區別)로 적정가리시용량(適正加里施用量) 추정식(推定式)에서 추정(推定)한 $K_2O$ 시용량(施用量)과 이에30%를 증비(增肥)하는구(區) 및 적정가리시용추정치(適正加里施用推定値)와는 관계(關係)없이 $K_2O\;8kg/10a$를 시용(施用)하는 3개수준(個水準)의 $K_2O$ 처리구(處理區)를 설정(設定)하여 수도품종(水稻品種) Akibare를 재배(栽培)하는 포장시험(圃場試驗)을 수행(遂行)하고 토양(土壤), 식물체분석(植物體分析) 및 수도(水稻)의 생육(生育)과 수량(收量) 및 수량구성요소(收量構成要素)들을 조사(調査)한 성적(成績)들을 종합검토(綜合檢討)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 작토중(作土中) 유효규산함량(有效珪酸含量) ppm과 유기물함량(有機物含量)%비(比), $SiO_2$/O.M.에 근거(根據)한 수도(水稻)에 대(對)한 N적량추정식(適量推定式)에서 추정(推定)한 N시용량(施用量)은 수도품종(水稻品種) Akibare의 생육(生育) 및 수량면(收量面)에서 볼 때 과량(過量)이었으며 토양(土壤) 및 식물체(植物體) 분석치(分析値)들에서 검토(檢討)한 결과(結果) $SiO_2$/O.M. 비조절(比調節)의 기본원리(基本原理)는 합당(合當)하나 그 식(式)의 상수(常數) 또는 F값은 변동(變動)되여야 한다고 판단(判斷)되였다. 2. 작토중(作土中)의 K활성도(活性度) 치환성(置換性) 염기 me/100 g비(比) $K/\sqrt{Ca+Mg}$를 조절(調節)하기 위한 $K_2O$ 시비량(施肥量) 추정식(推定式)에서 추정(推定)한 $K_2O$ 시용량(施用量)은 수도품종(水稻品種) Akibare의 생육(生育) 및 수량면(收量面)에서 과량(過量)이였으며 토양(土壤) 및 식물체(植物體) 분석치(分析値)들에서 검토(檢討)한 결과(結果) 조절기준(調節基準)되는 $K_O/\sqrt{Ca+Mg}$의 설정식(設定式) 즉(卽) $K_O/\sqrt{Ca+Mg}=0.03158+0.0007658\;SiO_2/O.M.$의 원리(原理)는 합리적(合理的)이나 기상수(其常數)의 변동(變動)이 필요(必要)하며 $K_S/\sqrt{Ca+Mg}$에 있어서도 토양(土壤)의 K공급능(供給能)을 고려(考慮)할수 있는 새로운 조절기준(調節基準)이 설정(設定)되어야 한다고 판단(判斷)되였다. 3. 수도(水滔)에 대한 $K_2O$ 시용량(施用量) 추정식중(推定式中)의 $K_S/\sqrt{Ca+Mg}$ 조절(調節) 기준(基準)은 K 공급능(供給能)을 대표(代表)할수 있는 작토중(作土中)의 치환성(置換性) Kme/100g에 근거(根據)해서 마음과 같이 설정(設定)함이 보다 합리적(合理的)임을 수도품종(水稻品種) Akibare의 천상수량 $K_2O$ 흡수량면(吸收量面)에서 밝힐수 있었다. 즉 $K_S/\sqrt{Ca+Mg}=0.037+0.78Kme/100g$.