• Title/Summary/Keyword: t검정 통계 분석

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The Effects for Brain stress by SUKI Alternative Therapy (SUKI 대체의학에 의한 뇌스트레스 감소 효과 연구)

  • Park, Young-Sik;Hong, Seong-Gyun
    • Journal of Convergence for Information Technology
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    • v.9 no.3
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    • pp.104-111
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    • 2019
  • The purpose of this study is to know the change of brain wave with stress by SUKI pressure alternative therapy. The experiment group was 12 students(male 6/female 6) with complained upper trapezius pain. Calculated the brain wave before and after stimulate the upper trapezius trigger point by SUKI and the stimulate time was 3min each persons(FP2, F3, F4, FP1, T3, T4, P3, P4). the experimet periods was 5times in a weeks with EEG(QEEG-S). The Date collecting used by Telescan(LXE5209). All the data was analyzed with SPSS 22.0 for window program. To compare the differences before and after the point pressure method, a corresponding sample of t-test was performed, and the statistical significance level was p<.05. The results was followed. The points of Fp2, F3, F4(*p<0.049, *p<0.042, *p<0.019) of EEG was showed a significant differences but Fp1, T3, T4, P3, P4 points did not showed. The SUKI alternative medicine techniques had a reduced effects for the some kind of brain stress. It is need to continuous research in the future.

Gaussian Filtering Effects on Brain Tissue-masked Susceptibility Weighted Images to Optimize Voxel-based Analysis (화소 분석의 최적화를 위해 자화감수성 영상에 나타난 뇌조직의 가우시안 필터 효과 연구)

  • Hwang, Eo-Jin;Kim, Min-Ji;Jahng, Geon-Ho
    • Investigative Magnetic Resonance Imaging
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    • v.17 no.4
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    • pp.275-285
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    • 2013
  • Purpose : The objective of this study was to investigate effects of different smoothing kernel sizes on brain tissue-masked susceptibility-weighted images (SWI) obtained from normal elderly subjects using voxel-based analyses. Materials and Methods: Twenty healthy human volunteers (mean $age{\pm}SD$ = $67.8{\pm}6.09$ years, 14 females and 6 males) were studied after informed consent. A fully first-order flow-compensated three-dimensional (3D) gradient-echo sequence ran to obtain axial magnitude and phase images to generate SWI data. In addition, sagittal 3D T1-weighted images were acquired with the magnetization-prepared rapid acquisition of gradient-echo sequence for brain tissue segmentation and imaging registration. Both paramagnetically (PSWI) and diamagnetically (NSWI) phase-masked SWI data were obtained with masking out non-brain tissues. Finally, both tissue-masked PSWI and NSWI data were smoothed using different smoothing kernel sizes that were isotropic 0, 2, 4, and 8 mm Gaussian kernels. The voxel-based comparisons were performed using a paired t-test between PSWI and NSWI for each smoothing kernel size. Results: The significance of comparisons increased with increasing smoothing kernel sizes. Signals from NSWI were greater than those from PSWI. The smoothing kernel size of four was optimal to use voxel-based comparisons. The bilaterally different areas were found on multiple brain regions. Conclusion: The paramagnetic (positive) phase mask led to reduce signals from high susceptibility areas. To minimize partial volume effects and contributions of large vessels, the voxel-based analysis on SWI with masked non-brain components should be utilized.

Analysis of the Experiences and Attitudes of Elementary School Pre-service Teachers on Entrepreneurship Education and Core Competencies of Entrepreneurship (초등 예비교사의 창업가정신 교육에 대한 경험 및 태도와 창업가정신 핵심역량 분석)

  • Lee, Soo-Young
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.16 no.1
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    • pp.99-111
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    • 2021
  • The purpose of this study is to examine the experiences and attitudes of elementary pre-service teachers, the level of entrepreneurship core competencies, and to analyze differences in entrepreneurship core competencies by grade, gender, and attitude. To this end, 208 elementary pre-service teachers who responded to the online questionnaire surveyed their experience, attitudes, perceptions, entrepreneurship attempts, and entrepreneurship core competency levels. As a result, pre-service teachers had a low level of understanding and direct participation in entrepreneurship education, the need for entrepreneurship education for elementary school students and teachers was high. The average of the value-creation competency group consisting of innovation, social value orientation, and change agility was relatively lower than the challenge, group creativity, and self-directed competency group. The difference of the entrepreneurship core competency level between the grades was not significant, and female students' competency levels were statistically significantly higher than male students. In addition, the average of the four core competencies of entrepreneurship in the group that recognizes the importance of entrepreneurship as essential competencies was statistically higher than that of their counterparts. Based on the results of this study, the implications for the design and development of a program for enhancing entrepreneurship competency for elementary school pre-service teachers were presented.

Patients who Visit to Dental Clinic Utilization Behavior, Dental Fear and Oral and Maxillofacial Pain (치과내원 환자의 이용행태 및 공포와 구강악안면 통증)

  • Jung, Myung-Hee;Jun, Sung-Hee
    • Journal of dental hygiene science
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    • v.9 no.3
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    • pp.361-367
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    • 2009
  • This study was conducted to know oral maxillofacial symptoms accroding to dental fear and dental use behavior. 334 persons Older than junior high school students in Daegu, South Korea who visited to dental clinic were targeted From March 1.2008 to March 15, 2008. Statistics tool was SPSS 12.0 for Windows. General characteristics and response degree according to oral maxillofacial symptoms was analyzed by frequency study. Fear and difference according to oral maxillofacial symptoms we re conducted by T-test and One-Way ANOVA. Correlation analysis was used to verify relation between fear and oral maxillofacial symptoms. Results are followings. 1. Women felt fear higher than men did. Persons who were older felt fear higher and these were statistically related. 2. Extraoral external was 62.9%, hightest on the symptoms response degree according to oral maxillofacial symptoms. Feeling back side of the head on the strain and neck was stiff on the items were high. 3. Oral maxillofacial symptoms were high in the case when they had regular inspection, experience of scaling, experience of anesthesia and visited to the clinic often. And. Two cases(having regular inspection and visiting to the clinic often) were statistically related. Conclusion: Each pan of oral maxillofacial symptoms in the high fear group according to oral maxillofacial symptoms and it was all statistically related. And, fear and each oral maxillofacial pains were positively related and it was statistically related.

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The Mediating Effect of the Resilience on the Relationship between Stress in Clinical Practice and Clinical Competence in Nursing Students (간호대학생의 임상실습스트레스와 임상수행능력의 관계에 미치는 극복력의 매개효과)

  • Kim, Ju-Yeun;Kim, Min-Kyeong;Cho, Jin Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.1
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    • pp.669-678
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    • 2017
  • This study aimed to identify the mediating effect of resilience on the relationship between stress during clinical practices and clinical competence in nursing students. A total of 137 senior nursing students in three different universities located in C city were included. The study period was between October 15 and November 15, 2016, and the data were collected using by structured questionnaires. Collected data were analyzed by descriptive analysis, t-test, ANOVA, Pearson's correlation, and Multiple regression using the SPSS 22.0 statistical program. The average score of stress in clinical practice, clinical competence, and resilience were $3.09{\pm}0.43$, $3.54{\pm}0.45$ of 5 and $4.93{\pm}0.66$ of 7. There were significantly negative correlations between stress in clinical practice and resilience (r=-.24, p=.005), as well as stress in clinical practice and clinical competencies (r=-.21, p=.012), while there were significantly positive correlations between resilience and clinical competencies (r=.59, p<.001). Resilience had a full mediated effect between stress in clinical practices and clinical competencies, which showed the significance upon Sobel test (Z=-3.02, p=.003). Therefore, it is suggested that various training courses and programs for strengthening resilience should be developed and applied to nursing curriculum.

A Comparative Study of Sensory Processing Abilities and Visual Perception Skills in Children With Attention Deficit Hyperactivity Disorder and Typical Children (ADHD 아동과 일반 아동의 감각처리능력과 시지각 기술의 비교 연구)

  • Ju, Jin-Ok;Kim, Kyeong-Mi
    • The Journal of Korean Academy of Sensory Integration
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    • v.18 no.3
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    • pp.1-13
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    • 2020
  • Objective : The purpose of this study was to evaluate the differences in sensory processing and visual perception between school-age children with Attention Deficit Hyperactivity Disorder (ADHD) and typical children. Methods : The participants in this research were children in the first and second grade in elementary school in Kyoung-Nam Region; 25 children diagnosed with ADHD comprised the experimental group, and 51 typical children comprised the control group. To evaluate the sensory processing of the children, the Sensory Profile (SP) was used, and the Korean Developmental Test of Visual Perception-2 (K-DTVP-2) was used to assess visual perception skills. The data were analyzed using SPSS 20.0, and the Independent t-test was used to compare the sensory processing and visual perception skills of the two groups. Results : The study found differences in the Sensory Profile summary scores and factor summary scores between the two groups (p<.05). We also found differences in the visual perception index and subtest standard scores between the two groups (p<.05). Conclusion : The results of this study show that the experimental and the control groups had significant differences in sensory processing and visual perception skills. The result will contribute to the assessment and education of children with ADHD.

A Case Study on the Characteristics of the Road Traffic Noise in Plant Communities (학교 정온시설 앞 식물군락 조성지역에서 도로교통소음 특성에 대한 사례연구)

  • Cho, Il-Hyoung;Lee, Nae-Hyun;Cho, Jung-Sang;Ko, Jung-Yong;SunWoo, Young;Park, Young-Min
    • Journal of Korean Society of Environmental Engineers
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    • v.28 no.12
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    • pp.1293-1303
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    • 2006
  • This paper represents a comparison the difference between existence and nonexistence of soundproof trees for road traffic noise. Also we suggested that the simple equation has been derived using a single regression analysis for predicting levels of $Leq_{th}$ at a given distance from a road in terms of the flow rate, the mean speed of the traffic, and the percentage of the type vehicles in the existence and nonexistence of soundproof trees. We classified a vehicle into four and analyzed contribution rate to traffic volume. As a result, the order showed as followed: light vehicle>medium vehicle>heavy vehicle>motorcycle. However, the results of analyzing contribution rate with between traffic volume and traffic noise by the each type showed as followed; Motorcycle>Light vehicle>Medium vehicle>Heavy vehicle. This study showed that the most a lof of traffic volumes of the three vehicles(light vehicle, medium vehicle and motorcycle) and heavy vehicle were existed in 67 km/h and 61 km/h of car speed, respectively. The total traffic noise to the mean car speed decreased because of the inflow a lot of traffic volumes between 2016 and 2388 in the range of 67 km/h of light vehicle speed, in traffic composition of 4.75% heavy vehicles, and 1.11% motorcycle. the final result for this study showed that statistical paired t-test for between existence and nonexistence of soundproof trees was significant(p<0.05) and the difference between daytime and night in the location of the nonexistence of plant communities with the independent sample T-test was significant(p<0.05). However, the independent sample T-test for analyzing the variance of traffic noise between daytime and night was not significant(p>0.05).

Development of Near-Infrared Reflectance Spectroscopy (NIRS) Model for Amylose and Crude Protein Contents Analysis in Rice Germplasm (근적외선 분광광도계를 이용한 벼 유전자원 아밀로스 및 단백질 함량분석을 위한 모델개발)

  • Oh, Sejong;Lee, Myung Chul;Choi, Yu Mi;Lee, Sukyeung;Oh, Myeongwon;Ali, Asjad;Chae, Byungsoo;Hyun, Do Yoon
    • Korean Journal of Plant Resources
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    • v.30 no.1
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    • pp.38-49
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    • 2017
  • The objective of this research was to develop Near-Infrared Reflectance Spectroscopy (NIRS) model for amylose and protein contents analysis of large accessions of rice germplasm. A total of 511 accessions of rice germplasm were obtained from National Agrobiodiversity Center to make calibration equation. The accessions were measured by NIRS for both brown and milled brown rice which was additionally assayed by iodine and Kjeldahl method for amylose and crude protein contents. The range of amylose and protein content in milled brown rice were 6.15-32.25% and 4.72-14.81%, respectively. The correlation coefficient ($R^2$), standard error of calibration (SEC) and slope of brown rice were 0.906, 1.741, 0.995 in amylose and 0.941, 0.276, 1.011 in protein, respectively, whereas $R^2$, SEC and slope of milled brown rice values were 0.956, 1.159, 1.001 in amylose and 0.982, 0.164, 1.003 in protein, respectively. Validation results of this NIRS equation showed a high coefficient determination in prediction for amylose (0.962) and protein (0.986), and also low standard error in prediction (SEP) for amylose (2.349) and protein (0.415). These results suggest that NIRS equation model should be practically applied for determination of amylose and crude protein contents in large accessions of rice germplasm.

The Analysis of Blood Glucose Level Difference According to the Exact Use of Blood Glucose Measurement Test Strips in $^{18}F$-FDG Wholebody PET ($^{18}F$-FDG를 이용한 전신 PET 검사에서 혈당 측정 검사지의 정확한 사용에 따른 혈당 수치의 차이 분석)

  • Park, Soon-Ki;Lee, Nam-Ki;NamGung, Chang-Kyung;Jung, Woo-Young
    • The Korean Journal of Nuclear Medicine Technology
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    • v.14 no.2
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    • pp.100-103
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    • 2010
  • Purpose: $^{18}F$-FDG wholebody PET is to evaluate the tumor using glucose metabolism. The blood glucose level is important factor that affects on a result of examination. High glucose levels may interfere with tumor targeting due to competitive inhibition of FDG uptake by D-glucose. The blood glucose level measurement test strips used in the blood glucose measurement are classified into the capillary blood measurement test strips and general purpose measurement test strips that can measure the venous blood and capillary blood altogether depends on cases. The purpose of the study was to compare the blood glucose measurements between simultaneously obtained capillary and venous blood samples using the capillary blood measurement test strips, general purpose measurement test strips. Materials and Methods: A total of 46 subjects (32 males, 14 females) with a mean age of $57.3{\pm}12.3$ years were enrolled. The blood glucose estimation was performed with a Optium Xceed Glucometer (Abbott). Simultaneous capillary and venous blood samples were obtained from each subject. The blood glucose levels were measured using the capillary blood measurement test strips and general purpose measurement test strips. The capillary and venous measurements were compared using a pared t-test. Results: The mean capillary and venous glucose values using the general purpose measurement test strips were $95.2{\pm}12.4$ mg/dL and $104.1{\pm}14.4$ mg/dL, giving a statistically significant difference (p<0.001) between the mean values for the capillary and venous glucose samples (9.0 mg/dL; 95% confidence interval (CI) -11.2 to -6.7). The mean capillary and venous glucose values using the capillary blood measurement test strips were $91.5{\pm}13.6$ mg/dL and $108.6{\pm}16.2$ mg/dL, giving a statistically significant difference (p<0.001) between the mean values for the capillary and venous glucose samples (16.6 mg/dL; 95% CI -20.2 to -13.0). Conclusion: When measuring the blood glucose level before $^{18}F$-FDG PET examination, since the incorrect blood glucose level can be measured, it should note to measure the blood glucose level of the venous blood by the capillary blood measurement test strips. Therefore the measurement variation can be reduced to fulfill the standardized measurement procedure with the suitable measurement test strips, the preparation of the PET examination will be able to be clearly confirmed. In addition, the standardized procedure of the following measurement on the area which is same at all times the blood area in the blood glucose measurement among a capillary or a vein will be needed.

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군집분석을 이용한 새로운 IS 실무자 분류 체계에 관한 연구

  • Gyeong, Won-Hyeon;Go, Seok-Ha
    • Proceedings of the Korea Society of Information Technology Applications Conference
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    • 2006.06a
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    • pp.573-601
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    • 2006
  • IS 실무자들은 과거처럼 단순한 시스템 분석이나 프로그래밍 기법만을 갖추는 것만으로는 조직이 원하는 정보기술을 효과적으로 운용하는 것이 어렵게 되고 있다. 예전과는 달리 최근의 기업에서는 통신 시스템을 포함하는 다양한 정보기술에 관련된 지식과 기술을 전문적으로 다룰 수 있는 전문가를 원하는 추세이다. 이러한 맥락에서 IS 실무자들이 자신의 업무를 성공적으로 수행하기 위해 필요한 전문 지식과 기술은 무엇인가라는 질문에 대한 대답을 알 수 있어야만 한다. 본 연구는 IS 실무자들이 그들이 직면하고 있는 ‘IS 지식과 기술의 빠른 변화’를 얼마만큼 인식하고 있으며, 그들이 필요로 하는 지식과 기술과 업무를 수행함에 있어 필수적인 지식과 기술을 얼마만 큼 보유하고 있는지를 조사하였다. 본 연구에서는 조사된 자료를 통하여, 기존의 국내외의 문화에서 밝혀진 인구 통계학적 분류기준 (예를 들자면, 경력 수준, 지역, 직종) 이외에 이들을 분류할 수 있는 기준에는 어떠한 것이 있는가에 대한 연구를 수행하였다. 분석을 위하여 실무자들이 현업에서 많은 시간과 노력을 들이고 있는 IS 활동영역에 대한 투자시간을 기준으로 실무자들을 분류하였다. 분석에서는 조사자의 군집분석과 다차원 분석을 통하여 분류된 실무자 그룹에 대한 여러 가지 기술적인 특성과, 인구 통계학적 특성을 파악하고, 그룹들에 대하여 새로운 분류에 적합한 표기를 제시하고자 하였다. 본 논문은 정보시스템 영역에서 수행된 IS 실무자들에 다양한 연구의 한 부분으로서, 기업 환경, 조직 환경, 나아가 실무자들의 직무환경의 개선에 필요한 지식과 기술을 제공할 것이다.아날로그 방식에서 IT 기반에 의한 디지털 환경으로 변화되고 있다. 또한 e러닝, T러닝, m러닝, u러닝 등의 용어가 생성되고 있다.키지에어컨에서 사용되고 있는 밀폐형 압축기에 대해서 그림 2에서 나타내고 있는 냉방능력 10tons(120,000Btu/h) 이하를 중심으로 상기의 최근 기술 동향을 간략하게 소개하고자 한다.질표준의 지표성분으로 간주되는 진세노사이드의 절대함량과 그 성분조성 차이에 따른 임상효과의 차별성이 있는지에 대한 검토와, 특히 최근 실험적으로 밝혀지고 있는 사포닌 성분의 장내 세균에 의한 생물전환체의 인체 실험을 통한 효과 검정이 필요하다. 나아가서는 적정 복용량의 설정과 이와 관련되는 생체내 동태 및 생체이용율(bioavilability)에 관한 정보가 거의 없으므로 이것도 금후 검토해야 할 과제로 사료된다. 인삼은 전통약물로서 오랜 역사성과 그동안의 연구결과에 의한 과학성을 가지고 있으므로 건강유지와 병의 예방 및 회복촉진을 위한 보조요법제 또는 기능성 식품으로써의 유용성이 있는 것으로 판단된다. 앞으로 인삼의 활용성 증대를 위해서는 보다 과학적인 임상평가에 의한 안전성 및 유효성 입증과 제품의 엄격한 품질관리의 필요성이 더욱 강조되어야 할 것이다.xyl radical 생성 억제 효과를 보여 주었다. 본 실험을 통하여 BHT 를 제외하고 전반적으로 세포 수준에서의 oxidative stress 에 대한 억제 효과를 확인해 볼 수 있었으며 특히 수용성 항산화제들에서 두드러진 효과를 보여 주었다. 제공하여 내수기반 확충에도 노력해야 할 것 이다.있었다., 인삼이 성장될 때 부분적인 영양상태의

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