• 제목/요약/키워드: Difference In Difference(DID)

검색결과 6,104건 처리시간 0.031초

시각 장애우와 청각 장애우에서 두점식별력과 격자해상능을 이용한 촉각인지능평가 (Assessment of tactile acuity by two-point discrimination and grating resolution in blind and deaf humans)

  • 박진희;유현광;김나리;최명애;김민선;박병림;강대임
    • 감성과학
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    • 제14권4호
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    • pp.537-544
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    • 2011
  • 시각장애우와 청각장애우에서 상실된 감각기능을 대체할 목적으로 촉각제시장치를 이용할 경우 효과적으로 촉각을 제시하기 위하여 대조군, 시각장애군, 청각장애군, 합병증성 시각장애군에서 신체 부위에 따른 촉각인 지능을 컴퍼스와 JVP dome을 이용하여 각각 두점식별력과 격자해상능을 측정하였다. 컴퍼스를 이용한 두점식별력은 대조군에서 손가락이 가장 높은 민감도를 보였으나 남녀의 차이는 보이지 않았다. 시각장애군과 청각 장애군은 대조군과 비교하여 손가락에서는 차이를 보이지 않았으나 팔과 다리 부위에서는 낮은 민감도를 보였다. JVP dome을 이용한 격자해상능은 대조군에서 다섯 손가락 모두에서 상호간의 차이를 보이지 않았으며, 또한 남녀의 차이도 보이지 않았다. 시각장애군은 대조군과 비교하여 다섯 손가락 모두에서 높은 민감도를 보였으며, 청각장애군은 대조군과 차이를 보이지 않았다. 그러나 합병증성 시각장애군은 대조군 및 시각장애군과 비교하여 두점식별력 및 격자해상능에서 모두 낮은 민감도를 보였다. 이상의 연구결과는 촉각제시장치를 이용할 경우 자극 부위와 방법을 고려해야 하며, 감각상실의 원인 질환에 따라 촉각인지능에 차이가 있음을 시사한다.

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전문대학생의 진로의식에 관한 연구 - D대학 치기공과 재학생을 중심으로 - (The research on the Career Consciousness of the College Students (revolve around D College Dental Technology Student))

  • 배봉진;이화식;박명호
    • 대한치과기공학회지
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    • 제32권4호
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    • pp.387-401
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    • 2010
  • Purpose: The work of Dental technician which is part of national dental health, is more specialized recently. This research provides fundamental data from analyzing student's career consciousness according to needs of a career education. Here is the conclusion of the analysis about student's career consciousness, that is for a right choice of career. Methods: This study did questionnaire to a dental Laboratory Technology student who locate in Taegu. Question response student number was 570 people. Response contents analyzed to 506 people except imperfect questionnaire. Data used windows sas 8.0 program and did descriptive statistical analysis. Results: There is a meaningful difference in what they want to know about an occupation according to ages. (${\rho}$ < 0.01) All ages are similar to their occupational thinking, however they who are under twenties consider working environment. Most motives of an entrance are similar, there is a meaningful difference. (${\rho}$ < 0.05) According to a grade of college, there is a meaningful difference how to obtain informations of a career. (${\rho}$ < 0.05) Sophomores and juniors obtain information from seniors or family, however freshmen obtain from the internet because of an accessibility. There is a meaningful difference of a job meaning between men and women. (${\rho}$ < 0.01) Men are working for a means of living. But women give weight to a self-development. The older they grow, the more they know about their aptitude. Selecting subjects are different choosing time & motive. According to ages and where they are from, there is a meaningful difference how much know about their aptitude. (${\rho}$ < 0.05) Older Students know more than young students. Selecting subjects are different choosing time & motive. In accordance with a grade, ages, and where they are from, there are different degrees about how much know their interests. There is a meaningful difference of a choosing major period and choosing informations. (${\rho}$ < 0.01) And also there is a meaningful difference where they are from and why they enter to College. (${\rho}$ < 0.001) In accordance with a grade, ages, and where they are from, there are different degrees about how much know their aptitude. There is a meaningful difference of a choosing major period. (${\rho}$ < 0.01) And also there is a meaningful difference why they enter to College. (${\rho}$ < 0.001) Conclusion: Although we know that a career education is very important, however lots of students select a career without their aptitude & interest & character. We need to teach a career education systematically; considering students career consciousness, with a proper career guidance, cultivating career consciousness.

사회서비스 부적정 이용에 대한 감사 효과분석 - 사회서비스 바우처 사업을 중심으로 - (Exploring the Effectiveness of Audit Against the Improper Usage of Social Service Vouchers in South Korea)

  • 박춘복;김종호;정광호
    • 한국정책학회보
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    • 제23권3호
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    • pp.161-198
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    • 2014
  • 최근 사회복지 수급대상자의 자격위반, 초과수혜, 그리고 중복수혜와 같은 다양한 형태의 부적정 이용에 대한 사회적 관심이 크다. 이에 본 연구는 사회서비스 분야의 부적정 행태에 대한 감사를 할 경우, 과연 부적정 행위가 억제될 것인지 여부를 실증분석을 통해 확인해 보고자 한다. 구체적으로 감사를 받은 실험집단과 그렇지 않은 유사한 통제집단을 비교하여 감사의 효과를 이중차이(DID: Difference in difference)기법을 통해 분석해 보고자 한다. 특히 사업 규모(제공인력과 이용자 수), 사업대상자 유형(노인, 장애인 등), 조직 형태(영리, 비영리), 지역 유형(대도시, 중소도시, 농어촌), 감사 회차(1, 2, 3차) 등을 통제변인으로 설정하고, 다중회귀분석을 활용하여 이중차이기법에서 추정된 감사효과를 확인하고자 했다. 분석결과에 따르면, 감사 이후 부적정 형태 중, 결제위반 비율은 약 4.02%, 결제위반 제공인력 수는 약 5.07명, 그리고 결제위반 이용자 수는 약 9.59명 각각 감소한 것으로 나타났다. 추후 연구에서는 감사효과로 부적정 이용의 감소가 왜, 그리고 어떻게 발생했는가에 관해 더욱 심도 깊은 분석과 더불어, 이를 설명할 수 있는 이론개발이 요구된다.

해상가두리 양식장에서 배합사료 및 생사료 투여에 의한 조피볼락, Sebastes schlegeli 건강도 (Comparative Health Extents of Korean Rockfish, Sebastes Schlegeli by the Commercial extruded Pellet and Moisture Pellet Administration)

  • 최혜승;허민도;손맹현;김강웅;김경덕
    • 수산해양교육연구
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    • 제25권6호
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    • pp.1315-1323
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    • 2013
  • The purpose of this research is to evaluate the effects of a commercial mixed extruded pellet(EP) and raw fish moist pellet(MP) diet on diseases prevalence and serological constituents and HSI of korean rockfish, Sebastes schlegeli grown in two commercial-scale aquaculture farms from June to December in 2009. The growth of MP-fed rockfish was slightly faster than EP-fed rockfish during experimental period, but did not show significant differences. The levels of TCHO, TG, Glucose and TP in the MP-fed rockfish group were higher than those of EP-fed group, whereas there was no significant difference in other biochemical factors of blood between two groups. In addition, bacteria and virus were not detected in both MP- and EP-fed rockfish groups, and the infection rates of gill fluke between two groups did not show clear difference. In conclusion, there was no comparable difference in growth and the health extents of one year rockfish by administration of the commercial mixed extruded pellet(EP) and raw fish moist pellet(MP) diets.

유채유 함유사료가 쥐의 혈청 및 간의 지질조성에 미치는 영향 (Effects of Rapeseed Oil Diet on Serum and Liver Lipid Levels in Rats)

  • 서은숙;김인숙
    • 한국식품영양학회지
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    • 제7권3호
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    • pp.192-202
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    • 1994
  • The fatty acid composition of a rapeseed oil being on the market was analyzed and the effect on gain of the body weight and lipid levels in serum and liver tissue of male rats of Sprague-Dawely strain fed the diet containing the rapeseed oil were studied. The fatty acid components of marketed rapeseed oil was oleic acid 29.4%, erucic acid 26.52%, linoleic acid 20.39% and linolenic acid 8.68%. The contents of total lipid in serum W3S Significantly higher in RSO20 group than Contr01 group(P< 0.01) . But that in the liver tissue did 001 show significant differences. The contents of triglyceride in serum was control group 84.14mg/dll, RSO15 group 100.33mg 141 and RSO20 group 122.00mg 141 and showed significant difference between each group, but that in the livertissue did not show significant differences. The contents of phospholipid in serum did not show significant differences. But that in the liver tissue showed significant difference between the control group 8.42mg /g and Rs02o group 7.34mg /g(p<0.001). The contents of total-cholesterol and free-cholesterol in serum and liver tissue of the RSO20 group showed the highest levels compared with control group, but there did not show significant differences. The contents of ester-cholesterol in serum showed significant.

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온요법이 여고생의 월경곤란증 경감에 미치는 효과 (The Effect of Thermotherapy on High School Girls' Dysmenorrhea)

  • 강인선;조결자
    • 지역사회간호학회지
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    • 제12권3호
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    • pp.773-784
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    • 2001
  • The study was conducted to test the effectiveness of thermotherapy for high school girls who suffered from disruption in school activities through dysmenorrhea, and to study the extent of its availability in school infirmaries as one of the nursing methods. The test for the study was designed to make a contrast between half of the subjects (20) who did not receive the thermotherapy, and the rest (20) who did during the period from February 15th to April 14th, 2001. Measurements were taken of the subjects who complained of painful menstruation by a set of variables. The variables that were established and complemented by Hur, Mung-heang (1985) consist of 29 items that assess the dysmenorrhea and vitality through the symptoms of primary menstruation visually. Spsswin was used to analyze the data. The Cronbach-${\alpha}$ method was used for statistic confidence, and the test effect of both the subjects and the contrary ones was analyzed by way of T-test. The conclusions are as follow. (1) The hypothesis 1 states that the subjects with themotherapy have a lower degree of dysmenorrhea rather than the contrary ones without it. By the above assessment, there was a quantitative difference between the subjects at 39.40, and the contrary ones at 22.0. After the themotherapy, the degree of dysmenorrhea in the subjects was low indicating that there is a still 5% chance of statistic meaningful difference (t= 2.651. P= .012). As a result, the first hypothesis was accepted. (2) The hypothesis 2 states that the subjects with themotherapy have a different primary menstruation than those without. Data indicate that there was a difference of -5.95 and -4.80. The subjects showed low degrees. Since it was statistically insignificant (t=-1.398, P=.170), the second hypothesis was rejected. (3) The hypothesis 3 states that the subjects with themotherapy have a different vitality. The vitality was measured in three aspects. (1) pulse rate (/min) The hypothesis 3' states that the subjects with themotherapy have the different pulse rate from those without. Data indicate that there was no statistically meaningful difference between the two groups (t=.237, P=. 814). Therefore, the third 1st hypothesis was rejected. (2) Respiration rate The hypothesis 3' states that the subjects with themotherapy have a different respiration rate between pre-thermotherapy and post-thermotherapy. in contrast with the ones without it. The data show that there was no statistically meaningful difference (t=.133. P=.895). A little respiration rate difference was shown between pre-and post-. Likewise. the third 2nd hypothesis was rejected. (3) Blood pressure In the 3rd sub-hypothesis that there would be a difference between experimental and controlled groups was also rejected. because there was no statistically significant difference between the contracting blood pressure and the relaxing blood pressure. In terms of vitality. the pulse rate, respiration rate and blood pressure have no statistical meaning but the first two ones show the decreasing in the rate. In short, though exclusive studies focused on thermo therapy have not been conducted and the comparison can not be made, this study shows not only that the thermotherapy is very effective to dysmenorrhea, but also that it can be available in school infirmaries as one of the nursing methods.

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Effects of Deep Abdominal Muscle Strengthening Exercises on Pulmonary Function and the Ability to Balance in Stroke Patients

  • Kang, Jeong-Il;Kim, Beom-Ryong;Park, Seung-Kyu;Yang, Dae-Jung;Jeong, Dae-Keun;Kim, Je-Ho
    • The Journal of Korean Physical Therapy
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    • 제27권4호
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    • pp.258-263
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    • 2015
  • Purpose: This study investigated effects of deep abdominal muscle strengthening exercises on pulmonary function and the ability to balance in stroke patients and was conducted to propose an exercise program for improving cardiovascular function. Methods: Study subjects were 20 patients with hemiplegia due to stroke, who were divided into the deep abdominal muscle strengthening exercise group (experimental group), 10, and the control group, 10. Pulmonary function tests measured FVC and FEV1, dynamic balance ability was measured using TUG. Static and dynamic balance ability was measured using BBS. The experimental group performed exercises during a period of 6 weeks, 5 times a week for 40 minutes, whereas the control group did not participate in regular exercise. The difference before and after the exercise was compared using paired t-test, difference in exercise before and after between groups was ANCOVA and level of significance was set at ${\alpha}=0.05$. Results: The changes in FVC and FEV1 within the group showed a significant difference only in the experimental group (p<0.001) (p<0.01), between-group difference was statistically significant only in FVC and FEV1 changes in the experimental group (p<0.001). The TUG changes within the group showed a significant difference in the experimental group and control group (p<0.001) (p<0.05), while BBS changes showed a significant difference only in the experimental group. Between-group difference was statistically significant only in TUG and BBS changes in the experimental group. The experimental group showed a more effective significant difference than the control group (p<0.001). Conclusion: Can exercise involving a deep abdominal muscle strengthening program be applied in patients with stroke with difficulty in control of trunk and decreased breathing ability?

성별에 따른 청소년의 흡연, 음주와 심리사회적 요인과의 관계연구 (Gender Differences in the Association between Psycho-social Factors and Smoking, Drinking in Adolescents)

  • 박남희
    • 보건교육건강증진학회지
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    • 제22권4호
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    • pp.123-136
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    • 2005
  • Purpose: This study was to investigate the gender difference of relationship between psycho-social factors ana smoking, drinking in adolescents. Method: The stratified cluster sample consisted of 925 adolescents. Data were collected from May to March 2002. The instruments used in this study were Perceived Stress, DES-D, Social Support and Self-Esteem. Results: The results showed that female had more perceived stress, depressed than male. Male had more social support network, smoke than female. Male who smoked cigarettes were more perceived stress, depressed than those who did not smoke. Female who smoked cigarettes were more social support network, and had less self-esteem than those who did not smoke. Also male who drank alcohol were more perceived stress, depressed than those who did not drank. Female who drank alcohol were perceived stress, depressed, social support network, and had less self-esteem than those who did not drank. Conclusion: It is hoped that much more research on gender difference in adolescents who smoked cigarettes, drank alcohol will be implemented in the future. In addition, it is suggested the application of various interventions to deal with drinking and smoking behavior among female and male adolescents.

생맥산가오가피(生脈散加五加皮)가 항피로(抗疲勞)에 미치는 영향(影響) -생맥산(生脈散)과 생맥산가오가피(生脈散加五加皮)의 비교(比較) 연구(硏究)- (Effects of Saengmaeksan-with-Ogapy on the Recovery of Fatigue Induced by Post-swimming Exercise)

  • 임형호;채기헌
    • 대한추나의학회지
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    • 제3권1호
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    • pp.1-14
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    • 2002
  • Objectives : To investigate the effects of Saengmaeksan-with-Ogapy on the recovery of fatigue induced by post-swimming exercise. Methods : The lactic acid, creatine phosphokinase(CPK), lactate dehydrogenase(LDH) and glucose were measured in blood. Results: The result were as follows; 1. The lactic acid levels in Saengmaeksan and Saengmaeksan-with-Ogapy group were immediately decreased at 30 minutes after exercise and statistically showed the significance different from the control group (P<0.005). 2. The CPK activities in Saengmaeksan and Saengmaeksan-with-Ogapy group were immediately decreased after exercise and statistically showed the significant difference compared with the control group (P<0.05). 3. The LDH activities in Saengmaeksan and Saengmaeksan-with-Ogapy group did not show the significant difference compared with the control group. 4. The glucose levels in Saengmaeksan and Saengmaeksan-with-Ogapy group did not statistically show the significant difference compared with the control group. Conclusions So it could be concluded that saengmaeksan and Saengmaeksan-with-Ogapy can recover the fatigue of after exercise.

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BSC 활용이 외식업 점장의 핵심성과지표 인식에 미치는 영향 (The Effect of BSC Implementation on Restaurant Managers' Perception of KPIs)

  • 장기룡;임현정
    • 한국식생활문화학회지
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    • 제24권5호
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    • pp.486-495
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    • 2009
  • The purpose of this research was to investigate whether the perception of KPIs by restaurant managers from financial and non-financial perspectives was affected by BSC implementation. The perceptions that were examined were importance, adoption, performance, and utilization of KPIs. We surveyed managers from multinational restaurant chains that were adopting BSC and those that were not. From a non-financial perspective, the difference in perceived importance between BSC adopted firms and firms that did not adopt BSC was significant. The managers of BSC adopted firms perceived KPIs more seriously than the others. Secondly, according to the managers' working experiences, the difference of perceived utilization in the internal business process perspective was significant between BSC adopted firms and firms that did not adopt BSC. In addition, from the learning and growth perspective, the difference in perceived adoption and utilization between the two groups was significant. Finally, in the BSC adopted firms, the perceived importance of the managers affected the other perceptions like adoption and utilization from both the financial and non-financial perspectives.