• Title/Summary/Keyword: Research subjects

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The Hurst Exponent of RR Intervals in MCG Heartbeat Time Series (MCG 시계열 신호에서 RR간격 분석)

  • Lee, Hyoung;Min, Joon-Young;Lee, In-Jung
    • Journal of Information Technology Applications and Management
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    • v.12 no.4
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    • pp.25-31
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    • 2005
  • We know that the Hurst Exponent (HE) is a real number in [0, 1] which denotes randomness of time series. in this research, we suggest non-linear analysis of human biological signals through HE. The feasibility of human biological signals using inductive incitement provides Some diagnosis for active treatment. In our experiment, we measured the heartbeat through the MCG, 29 healthy and 34 abnormal subjects ostensibly. The raw data of acupuncture incitement are supported by opinions of gross examination and pathological diagnosis. The mean values of HE are 0.345, 0.755 and 0.805 for the periods of before, during and after acupuncture treatment, respectively in case of abnormal subjects. On the other hand, the mean values, 0.808, 0.797 and 0.785 are for normal cases, correspondingly. From this data, we show that HE is very significant in abnormal controls according to an acupuncture incitement, and the incitement effect is evidently extracted in abnormal subjects. But, in normal subjects, the incitement effect is meaningless.

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Cross-Cultural Study of Relationship between Mathematics Academic Achievements and Motivation, Attitude and Self-Confidence in Mathematics

  • Pang, Kun
    • Research in Mathematical Education
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    • v.11 no.2
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    • pp.153-163
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    • 2007
  • Utilizing the quantitative analysis methodology of questionnaire, the study explores the differences in the factors of achievement motivation, learning mathematics attitude and learning mathematics self-confidence and also the relationship between mathematics academic achievement and these factors in three areas in China. The following conclusions are drawn: 1. The subjects from different development level areas have significant differences in motivation, attitude and self-confidence in mathematics; 2. The subjects from different areas who possess the same ethnic group have significant differences. But the subjects from same area who possess different nationalities have little difference. It can be concluded that that the differences in these factors can be contributed to regional differences, rather than to ethnic differences; 3. The subjects from undeveloped areas have significant gender differences, and the levels of males are higher than those of female.

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Korean Women's Shopping Behavior and Body Image in U.S.

  • Lee, Seung-Hee
    • Journal of Fashion Business
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    • v.9 no.3
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    • pp.125-133
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    • 2005
  • The purpose at this study was to examine and understand shopping behaviors and body image among Korean females in U.S. Subjects for this research were 20 Korean housewives. They were interviewed for this study using an interview schedule. As a result, most at the subjects have enjoyed shopping in U.S. stores. They showed that they go shopping more often in U.S. than in Korea due to more time to shop. They considered refund policy and kind salespersons as th positive characteristics in U.S. stores, while they complained about size, quality, and style in even their favorite stores. Also, subjects tend to be dissatisfied with their bodies. Compared to how they feel in Korea, they especially feel lower body image and lower self-esteem in the U.S. Ninety percent of subjects considered their body affected their shopping behaviors. To compensate how they felt about their bodies, they responded that they limit or change clothing styles or colors when they shopped. Based on these results, socio-cultural body image regarding ideal beauty and shopping behavior would be discussed.

The Effects of Autogenic Training on Heart Rate Variability (자율훈련법이 심박변이도에 미치는 영향)

  • Lee, Jae-Hyok;Lee, Jin-Gyu
    • Journal of Oriental Neuropsychiatry
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    • v.18 no.1
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    • pp.123-132
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    • 2007
  • Objective : The purpose of this research is to investigate the effects of Autogenic Training on autonomic nervous system for normal subjects with Heart Rate Variability(HRV). Then HRV of total subjects were analyzed by Sasang constitution, MBTI type and relaxation therapy experience. Method : Autogenic Training was applied on 39 subjects individually. Then HRV was examined each 5 minutes before and after Autogenic Training application. Results : 1. Mean HRV, SDNN, SDSD were significant different in HRV between before and after Autogenic Training application in total subjects. 2. SDNN, SDSD were significant different in HRV between before and after Autogenic Training application in Soeumin. Mean HRV, SDNN, SDSD were significant different in HRV between before and after Autogenic Training application in Taeeumin. Conclusion : The results suggest that Autogenic Training application have shown anti-stress effects. Autogenic Training application to Soeumin and Taeeumin have shown more anti -stress effects than application to Soyangin.

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An Effects of Aquatic Exercise on in Home Stroke Patients (수중운동이 재가 뇌졸중 환자의 재활에 미치는 효과)

  • Park, Sang Youn
    • Korean Journal of Adult Nursing
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    • v.18 no.5
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    • pp.798-808
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    • 2006
  • Purpose: The purpose of this study was to investigate the effects of aquatic exercise on rehabilitation in home stroke patients. Method: A quasi-experimental pretest and posttest design was used to examine the change of balance, ADL, IADL, pain, depression and self-efficacy atthe completion of 6-weeks aquatic exercise program. The subjects consisted of 25 adults who had a stroke. Thirteen experimental and twelve control subjects completed pre and post test measures. Outcome variables were balance, ADL, IADL, pain, depression and self-efficacy. Chi-Square test(Fisher's exact method) was used to examine the equality of the subjects and Wilcoxon Rank Sum Test used to examine the group difference by using SAS. Results: There was no significant difference in balance and depression between the two groups. However, there was a significant difference in ADL, IADL, pain and self-efficacy between the two groups. Conclusion: Aquatic exercise can improve ADL, IADL, self-efficacy and reduce pain. Therefore, further research is recommended by increasing the length of aquatic exercise and number of subjects, so that its effects can be more generalizable.

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A Nutrition Survey of Children Attending a Model Elementary School of Rural Type School Lunch Programs (경기도 용인군 농촌형 급식시범국민학교 아동의 영양실태 조사)

  • 김복희
    • Journal of Nutrition and Health
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    • v.22 no.2
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    • pp.70-83
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    • 1989
  • A nutrition survey of 209 children, 6 to 13 years old, in the namgok elemetnary school at Namsamyun, Yongin-gun, Kyonggi province, was undertaken in July of 1987, to investigate dietary and nutritional status. Mean value of hight was 98% of the Korean standard established by the Korean Standards Research Institute. However, in these terms, 7.7% of the subjects were proven to be short, mean value of weight was 94.5 of the Korean standard. However, in these terms, 9.3% of the subjects were proven to be moderatly underweight ; whereas 10.4% of the subjects were proven to be over weight. By the WHO criterion, 18.4% of the subjects showed lower figures of hemoglobin than anemic level of 12gm%/이. Mean urinary urea nitogen/creatinine ratio was 9.1$\pm$5.0 Carbohyudrate provided 68% of total energy intake ; protein accunted for 13% ; fat provided 19%. Energy intake was divided among breakfast, lunch, dinner and snacks in a percentage ratio of 22 : 44 : 24 : 13. The survey clarified that the elementary school feeding largely supplemented the inadequate intake of these chidren at home.

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공업계 고등학교 수학 교과와 전문 교과와의 수학적 연결성 분석 -전자계산기과 중심-

  • Moon, Chul-Woo;Kim, Young-Ok
    • East Asian mathematical journal
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    • v.26 no.2
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    • pp.233-249
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    • 2010
  • It seems that it is critical to comprehend mathematics as a tool subject in order to understand a number of calculations in the professional subjects in the vocational high schools. This study is designed to determine "how much mathematics is connected to specialized subjects in terms of mathematical content at vocational high schools". To investigate the research questions, this study examined the connections between the mathematical topics included in professional subjects and those of mathematics subjects in the vocational high school. In the end, this study suggest that is should be necessary to make new mathematics textbook which reflects the reality and needs of the present vocational high school students.

Assessment of Bioequivalence with Dropout Subjects in 3$\times$3 and 3$\times$2 Crossover Design

  • Ko, seoung-gon;Oh, Hyun-Sook
    • Journal of the Korean Statistical Society
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    • v.29 no.2
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    • pp.219-229
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    • 2000
  • Oh et al.(1999) 3$\times$2 crossover design for assessing bioequivalence when two new generic drug formulations and innovator are simultaneously considered. This design is not only more efficient than 3$\times$3 one, proposed by Lee et al.(1998), in practical sense, but also more ethical in medical sense. However, the general statistical methods are not directly applicable to both designs when subjects are dropped out in the experiment, even though it is always possible in bioavailability and bioequivalence studies because of some administrative and economic reasons. In this research we propose an inference to drug effects when subjects are dropped out in the planed-for 3$\times$3 and 3$\times$2 crossover experiments. An example is given for illustration.

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Study of Sasang Constitutional Tendency on the 20 Cases of Schizophrenic Patients Visiting Daeya Public Health Center (대야보건소에 내원한 정신분열병 회원 20례에 대한 체질진단소견)

  • Lee Si-Woo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.5
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    • pp.1443-1445
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    • 2005
  • The causes of schizophrenia are multifactorial and stress-diathesis model is one of the supporitive causes. This study is aimed for Sasang Constitutional tendency of schizophrenic patients. 20 Subjects are recruited from Gunsan Mental Health Center. They agreed with this study in advance and visited Daeya Public Health Center to interview with Sasang Constitutional Specialist. Their Sasang Constitution types are determined by QSCC II and interview with specialist. Taeumin and Soyangin are prevelant among the 20 cases of schizophrenic subjects visiting Public Health Center; 10 subjects are Taeumin, 9 subjects are Soyangin and 1 subject is Soeumin.

A Study on the Academic Achievements of Engineering College Students Educated by the $7^{th}$ National Education Process (제7차 교육과정을 이수한 공과대학 신입생의 학업성취도 연구)

  • Noh, Tae-Wan
    • Journal of Engineering Education Research
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    • v.14 no.5
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    • pp.10-13
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    • 2011
  • The 7th National Education Process, implemented in 2004, features student-oriented, selective educational programs with a wide range of optional subjects. In 2005, reflecting this revised National Education Process, the College Scholastic Ability Test began allowing individual students to choose the subjects for examination they would like to take. As a result, the deviations of the college freshmen's academic achievements in some subjects have noticeably widened. This study shows academic abilities of the students on some subjects by comparing the results of 2008 College Scholastic Ability Test with that of the Basic Academic Ability Evaluation Test for freshmen in engineering college of Hongik university. Lastly, this paper presents some improvement plans in order to better accommodate students with academic achievement levels lower than what is expected by the university.