• Title/Summary/Keyword: 무작위 실험 연구

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The Effect of a Combined Arts Education Program Combining Choral and Respiratory Training on the Respiratory Function, Stress, and Quality of Life in University Students (합창과 호흡훈련을 병합한 복합예술교육프로그램이 대학생의 호흡기능 및 스트레스와 삶의 질에 미치는 영향)

  • Kim, Byeong-Soo;Song, Jun-Young;Kim, Tae-Seop;Kim, Ji-Yeon
    • Journal of Convergence for Information Technology
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    • v.10 no.5
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    • pp.126-133
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    • 2020
  • This study was conducted with a randomized control group pretest-posttest study design to investigate the effects of a combined arts education program combining choral and respiratory training on the respiratory function, stress, and quality of life of university students. Twenty-five university students were randomly assigned to the experimental group (n=13) who participated in the combined arts education program and the control group (n=12) who participated in the general arts education program. As a result, there was a significant difference in the lung capacity, respiratory strength, stress and quality of life scale before and after the experiment in the experimental group (p<0.05). In addition, the results of the rest of the tests showed significant differences (p<0.05), except for the result FEV1. Through the results of this study, the combined art education program that combines chorus and breathing training will be beneficial as a program to improve stress reduction, breathing function and quality of life of university students.

Missing Data Modeling based on Matrix Factorization of Implicit Feedback Dataset (암시적 피드백 데이터의 행렬 분해 기반 누락 데이터 모델링)

  • Ji, JiaQi;Chung, Yeongjee
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.23 no.5
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    • pp.495-507
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    • 2019
  • Data sparsity is one of the main challenges for the recommender system. The recommender system contains massive data in which only a small part is the observed data and the others are missing data. Most studies assume that missing data is randomly missing from the dataset. Therefore, they only use observed data to train recommendation model, then recommend items to users. In actual case, however, missing data do not lost randomly. In our research, treat these missing data as negative examples of users' interest. Three sample methods are seamlessly integrated into SVD++ algorithm and then propose SVD++_W, SVD++_R and SVD++_KNN algorithm. Experimental results show that proposed sample methods effectively improve the precision in Top-N recommendation over the baseline algorithms. Among the three improved algorithms, SVD++_KNN has the best performance, which shows that the KNN sample method is a more effective way to extract the negative examples of the users' interest.

Capstone Design Trail in Nursing Education and Its Outcome (간호학에 적용한 캡스톤 디자인의 적용사례 및 결과)

  • Moon, Kyoung-Ja
    • The Journal of the Korea Contents Association
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    • v.17 no.6
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    • pp.194-202
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    • 2017
  • This study is a methodological study analyzing the results of applying capstone design to nursing education. Among the nursing college students who completed the fundamental nursing subject, the students who agreed to participate in the research were composed of the project team and proceeded as team activities. It was conducted through knowledge - team composition - topic selection / analysis - design / development - simulation - evaluation / feedback process starting from knowledge learned through fundamental nursing class. The research period was from January 1, 2015 to October 30, 2015 for 6 months. BBS (Bed Sore Socks) was developed for the prevention of pressure ulcers, and BBS was applied for seven days to randomly selected patients in the long term care facility. The incidence and pressure ulcer risk scores were assessed. The results of the pilot study showed that the intervention group had an effect on the incidence of pressure ulcer ($x^2=.40$, p = .500) and the pressure ulcer risk score (z = -.45, p = .690), but it was not statistically significant. Capstone design was trailed in the field of nursing education and produced the bed sore socks. In the nursing education, not many capstone design trails appeared yet, this study might be the first trail in the field of nursing, and it could be challenging for expanding of nursing education.

The Effects of Negative Ions on Stress Responses and Cognitive Functions (산림 건강 물질이 스트레스 반응과 인지기능에 미치는 영향: 음이온을 중심으로)

  • Kim, Si Kyeong;Shin, Won Sop;Kim, Mi Kyeong;Yeoun, Poung Sik;Park, Jong Hoon;Yoo, Ri Wha
    • Journal of Korean Society of Forest Science
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    • v.97 no.4
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    • pp.423-430
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    • 2008
  • Negative ion is considered as one of the forest health attributes. The overall purpose of this study was to investigate the influence of air negative ions on physiological effects. Data were collected from 12 volunteers (university students) who were randomly assigned into treatment and control groups. Subjects in treatment group were exposed to air with negative (2,001,000 ion/cc). Using pretest-posttest control group design, blood cortisol, norepinephrine, epinephrine, and cognitive function were measured. Data analysis indicated that negative ions influenced on positive effects of stress responses.

침치료에 대한 환자진료 평가 프로그램-독일 보험회사들의 침효과에 대한 검증-

  • Melchart, Dieter
    • Journal of Pharmacopuncture
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    • v.6 no.1
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    • pp.33-34
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    • 2003
  • 배경: 독일 의사와 보험회사 위원회 (The German Board of Physicians and Insurance Companies:Bundesausschuss der Arzte und Krankenkassen)가 앞으로 일부 적응증에 대한 침치료에 대해 공적 보험회사가 보험료를 지급해야 할 지에 대한 추가 결정을 하기 위해 침의 효과를 평가하기로 했다. 목적: 1) 침치료가 편두통의 예방, 긴장성 두통, 요통, 무릎과 고관절의 골관절염치료에 대조군 침치료보다 효과가 있는지 검증 2) 침치료가 편두통의 예방적 치료에 표준 약물 치료와 비슷하게 효과가 있는지 검증 3) 보건의료 서비스체계 안에서 주어진 조건에 대한 일상적 침치료의 질적인 부분을 서술하고, 안전성을 평가하며, 다른 침술학파간의 임상결과의 차이와 비용의 효용적 활용부분을 평가한다. 4) 위의 적응증에 해당하는 모든 임상실험연구를 찾아내어 기존의 고찰내용을 갱신한다. 방법: 1) 무작위 표본추출 임상 실험, 침치료, 거짓침 치료, 대기자 명단 대조군, 출발시점 4주, 28주 관찰 2) 무작위 표본추출 임상 실험, 침치료, 표준약물치료 대조군, 츨발시점 4주, 28주 관찰 3) 전향적 다중 의료기관 관찰 연구, 두 가지 다른 자료를 활용하여서, 치료 결과를 침 시술자에 의한 모든 환자 평가 자료와, 열 두 명의 환자 가운데 한 명의 환자로부터 직접 받은 평가 자료 (관찰 출발시점, 치료 출발 시점, 치료 시작 후 6 개월) 실험공간: 1) and 2) 높은 수준의 수련을 한 침 시술 의사가 시술하는 병원이나 일차 진료기관의 외래. 3) 보건 의료 서비스내 저급의 침 시술 의사 (140 시간 수강, 학점 이수 필수) 참가자: 1) $4{\times}320$ 편두통의 예방, 긴장성 두통, 요통, 무릎과 고관절의 골관절염 환자 2) 480 편두통 환자(긴장성 두통 환자 추가적) 3) 약 500,000 환자, 2년 반 동안: 대략 한 적응증 당 10,000 환자 치료법: 모든 침치료 자리는 체침만 허용함. 1) 진짜 침은 학파의 지침에 따른 심자, 거짓 침은 비특이적 자리의 표피만 찌르는 자침 (12-15회, 8주): 대기자 대조군은 12주 동안에 아무 치료도 받지 않는다. 2) Group 1(N=240): 최대 15회 치료, 12주 동안: Group II (N=240) 투약 Proponolol (80-240mg), Metoprolol (100-200mg) or Flunarizin (5-10mg) 하루, 16주 이상 3) 치료회수와 침자리의 선정은 참가자가 결정 주된 임상 결과 지표: 1) 군 간의 치료 전 및 치료 진행 도중 4주 마다의 두통을 느낀 날 수의 차이 (평균 혹은 이상의 편두통이나 긴장성 두통) 2) 요통환자 군간의 기능을 측정하는 FFbH-R (Funktionsfragebogen Hannover) 비교 3) 관절염 환자의 군간 WOMAC 지표 비교 4) 군 간의 24주 동안 두통을 느낀 날 수의 차이(평균 혹은 이상의 편두통이나 긴장성 두통) 5) 적응증, 부작용, 성공율에 대한 거시적 평가, 사용한 침수, 환자의 만족도, SES(?). ADS(?) 통증 장애 지표(PDI), 삶의 질 지표(SF36). 예비 결과 위의 결과가 큰 관찰 연구에 초점을 맞추면서 소개될 것임.

The Influence of Background Color on Perceiving Facial Expression (배경색채가 얼굴 표정에서 전달되는 감성에 미치는 영향)

  • Son, Ho-Won;Choe, Da-Mi;Seok, Hyeon-Jeong
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2009.05a
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    • pp.51-54
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    • 2009
  • 다양한 미디어에서 인물과 색채는 가장 중심적인 요소로서 활용되므로 인물의 표정에서 느껴지는 감성과 색채 자극에 대한 감성적 반응에 연구는 심리학 분야에서 각각 심도 있게 연구되어왔다. 본 연구에서는 감성 자극물로서의 얼굴 표정과 색채가 상호 작용을 하였을 때 이에 대한 감성적 반응에 대하여 조사하는데 그 목적이 있다. 즉, 인물의 표정과 배경 색상을 배치하였을 때 인물의 표정에서 느껴지는 감성이 어떻게 변하는지에 관한 실험 연구를 진행하여 이를 미디어에서 활용할 수 있는 방안을 제시하고자 한다. 60명의 피실험자들을 대상으로 진행한 실험연구에서는 Ekman의 7가지의 universal facial expression 중 증오(Contempt)의 표정을 제외한 분노(Anger), 공포(Fear), 역겨움(Disgusting), 기쁨(Happiness), 슬픔(Sadness), 놀람(Surprising) 등의 6가지의 표정의 이미지를 인물의 표정으로 활용하였다. 그리고, 배경 색채로서 빨강, 노랑, 파랑, 초록의 색상들을 기준으로 각각 밝은(light), 선명한(vivid), 둔탁한(dull), 그리고 어두운(dark) 등의 4 가지 톤(tone)의 영역에서 색채를 추출하였고, 추가로 무채색의 5 가지 색상이 적용되었다. 총 120 장(5 가지 얼굴표정 ${\times}$ 20 가지 색채)의 표정에서 나타나는 감성적 표현을 평가하도록 하였으며, 각각의 피실험자는 무작위 순위로 60개의 자극물을 평가하였다. 실험에서 측정된 데이터는 각 표정별로 분류되었으며 배경에 적용된 색채에 따라 얼굴 표현에서 나타나는 감성적 표현이 다름을 보여주었다. 특히 색채에 대한 감성적 반응에 대한 기존연구에서 제시하고 있는 자료를 토대로 색채와 얼굴표정의 감성이 상반되는 경우, 얼굴표정에서 나타나는 감성적 표현이 약하게 전달되었음을 알 수 있었으며, 이는 부정적인 얼굴표정일수록 더 두드러지는 것으로 나타났다. 이러한 현상은 색상과 톤의 경우 공통적으로 나타나는 현상으로서 광고 및 시각 디자인 분야의 실무에서 활용될 수 있다.

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The Reality Therapy Program Effect on Occupational Stress in Company Employee (현실요법 집단상담 프로그램이 직장인의 직무스트레스에 미치는 효과)

  • Kim, Se-Bong;Byun, Sang-Hae
    • 한국벤처창업학회:학술대회논문집
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    • 2009.08a
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    • pp.27-41
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    • 2009
  • This study research the effect that the reality therapy program reduces the occupational stress in company employee. The subjects of this research were company employees of the A area in 30-40's. They were divided into two groups: an experimental group of 10 company employees, and a control groups of 10 company employees. And the reality therapy program was executed to the experiment group. A measurement tool was used a standard occupational stress scale for korean employee that developed by The Korean Society of Occupational Stress. For the purpose of the study, it was t-test to analyze collected data. The result of the study was that the occupational stress in an experiment group which take part in the reality therapy program was meaning statistically reduced than the control group.

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Effects of Auricular Acupressure on Constipation and Depression in Shift- Work Nurses (귀지압이 교대근무 간호사의 변비와 우울에 미치는 영향)

  • Kim, Jan Dee;Park, Ji Suk;Choi, Da Hee;Choi, Gyu Won;Lee, Eun Jin
    • The Journal of the Korea Contents Association
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    • v.22 no.4
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    • pp.689-699
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    • 2022
  • The purpose of this study was to examine the effects of auricular acupressure on constipation and depression in shift-work nurses. The data was collected from May to June 2021 at A hospital in area I, and 40 nurses working in shifts participated in this study. This study was an open-label randomized controlled trial. 40 nurses who had constipation were randomized to the experimental group (n=20) or control group (n=20). Auricular acupressure was performed for 2 weeks at the corresponding points of constipation and depression for the experimental group. Auricular acupressure for 2 weeks significantly decreased constipation scores compared to the control group (F=7.74, p<.001). The mean difference in depression scores before and after acupressure in the experimental group (2.90±2.86) was larger than the difference in the control group (1.35±3.12), but it was not statistically significant (t=-1.64, p=.055). Auricular acupressure was effective in relieving constipation in shift-work nurses. Auricular acupressure could be considered as a treatment option for constipation.

The Effectiveness of Problem-Solving Treatment on Geriatric Depression (노인 우울증에 대한 문제해결치료(Problem-Solving Treatment)의 효과성 연구)

  • Yoon, Hyun-Sook;Koo, Bon-Mi;Lee, Kang;Lee, Jea-Yeon
    • 한국노년학
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    • v.30 no.3
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    • pp.871-894
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    • 2010
  • Research was undertaken to examine the effectiveness of PST for the depression of Korean Elderly. The program and manual for korean elderly was developed based on PST procedures for depression as outlined by Nezu and D'Zurilla(2007). For the purpose, 150 old people over 65 who resided in chunchun were randomly selected. and screened with PHQ-9. 42 elderly who had depression symptom at middle level, were chosen for study and randomly assigned into experimental group(n=23) and control group(n=19). PST is a six session, manual-based conducted over an 6-week period by trained interviewers in the elderly's home. As a results, CES-D and KGDS of the experimental group have been significantly decreased and total SPSI-R has been significantly increased between pre-and post measures while no statically significant change was found in control group. This results suggest that problem-solving therapy program might decrease the depression and enhance the problem solving ability of the elderly and that PST can be suitable to home visit program with social work perspectives.

Vitamin D and Risk of Respiratory Tract Infections in Children: A Systematic Review and Meta-analysis of Randomized Controlled Trials (비타민 D와 소아 호흡기 감염의 위험성: 무작위 대조 연구에 대한 체계적 문헌고찰 및 메타분석)

  • Ahn, Jong Gyun;Lee, Dokyung;Kim, Kyung-Hyo
    • Pediatric Infection and Vaccine
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    • v.23 no.2
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    • pp.109-116
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    • 2016
  • Purpose: Recent observational studies have found that vitamin D deficiency is associated with respiratory tract infections. However, randomized controlled trials (RCTs) regarding the efficacy of vitamin D in childhood respiratory tract infection (RTI) have yield inconsistent results. We performed a systematic review and meta-analysis to evaluate the association between vitamin D supplementation and the risk of RTI. Methods: A comprehensive search was conducted using MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trial. Randomized controlled trials of vitamin D supplementation for prevention of RTI in children were included for the analysis. Cochrane Collaboration's tool for assessing the risk of bias was used to assess the quality of the studies. Pooled risk ratios with 95% confidence intervals (CIs) were meta-analyzed using Review Manager 5.3. Results: A total of seven RCTs were included in the meta-analysis. According to a random-effects model, the risk ratio for vitamin D supplementation was 0.82 (95% CI: 0.69-0.98) and $I^2=62%$ for heterogeneity. On subgroup analysis, heterogeneity decreased in the subgroup with follow-up less than 1 year, participants ${\geq}5years$ of age, patients subgroup, and subgroup with dosing daily. Funnel plot showed that there might be publication bias in the field. Conclusions: The present meta-analysis supports a beneficial effect of vitamin D supplementation for the prevention of RTI in children. However, the result should be interpreted with caution due to limitations including a small number of available RCTs, heterogeneity among the studies, and potential publication bias.