• Journal of Power Electronics
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• 제7권2호
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• pp.132-139
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• 2007

Electrical motors are an integral part of industrial plants with no less than 5 billion motors built world wide every year. The demand for low-cost brushless DC (BLDC) motors has increased in industrial applications. This paper presents a BLDC motor control algorithm for low-cost motor drive applications using general purpose microcontrollers which have only one on-chip timer. This paper describes how to realize pulse width modulation (PWM) signals with general input/output (I/O) ports to control a three-phase permanent magnet brushless DC motor using the timer interrupt on MSP430F1232.

• PNF and Movement
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• 제14권1호
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• pp.15-21
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• 2016

Purpose: The purpose of the present study was to compare the effects of both general hold-relax techniques and hold-relax techniques using pumping on pain due to delayed muscle pain and on the range of motion (ROM) of joints. Methods: Thirty-nine young adult males and females were randomly assigned either to a hold-relax technique application group of 20 subjects or to a group of 19 subjects with hold-relax techniques applied using a pumping application. Tenderness thresholds, the ROM of joints, and pain intensities were measured on the biceps of the nondominant arm of the subjects in both groups before exercises were performed to induce delayed muscle pain. Tenderness thresholds were again measured 24hours, 48hours, and 72 hours after inducing delayed muscle pain. The relevant intervention methods were applied to the two groups after conducting the measurement at 48hours. As a statistical analysis method, repeated measure ANOVAs were conducted to examine the tenderness thresholds, ROMs of elbow joints, and pain intensities in the individual groups at the time points. Results: At 48 hours and 72 hours after application of the interventions, the general hold-relax technique application group showed greater changes in the tenderness thresholds, the ROMs of elbow joints, and the pain intensities than did the group applying hold-relax techniques using a pumping application (p>0.05). Conclusion: Based on the results of the present study, the application of hold-relax techniques is thought to have beneficial effects on pain resulting from delayed muscle pain and on limited ROMs of joints.

• Asian Pacific Journal of Cancer Prevention
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• 제17권10호
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• pp.4689-4692
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• 2016

Purpose: To study the clinical application value of ultrasound guided thyroid fine needle aspiration biopsy and thinprep cytology testing in diagnosis of thyroid disease. Methods: A total of 78 patients with thyroid nodules were enrolled, 34 males and 44 females, aged 33-64 years old with mean age of 47.6 years. All underwent thyroid module fine needle puncture after surgery to assess cell pathology and histopathological features. Results: Sufficient specimens were obtained from all of 78 patients, the cytological results of 73 cases (93.6 %) being consistent with pathological results. While 20 cases (25.6 %) were malignant tumors, 44 (56.4 %) were benign and 9 (11.5 %) were non-tumor lesions. The sensitivity of benign and malignant thyroid nodule by thyroid fine needle puncture was 90.9 %, specificity was 98.1 % and the positive predictive value was 96.3 %. Conclusions: It is demonstrated that ultrasound-guided thyroid fine needle aspiration biopsy and thinprep cytology testing have diagnostic value in clinical application for thyroid disease,showing good diagnostic coincidence rates with histopathological examination. They can thus be regarded as safe and effective for preoperative diagnosis and providing an appropriate basis for selection of surgery.

• 대한가정학회지
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• 제50권6호
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• pp.43-54
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• 2012

The purpose of this study was to identify the factor structure of self-efficacy, clothing behaviors, contents application of the unit 'preparing and managing clothes' and the effects of self-efficacy on clothing behavior and contents application of the unit 'preparing and managing clothes'. Questionnaires were administered to 201 girl students in middle school, living in the Daegu area. Frequency, descriptive statistics, factor analysis, reliability analysis, and multiple regression were used for data analysis. The findings are as follows. Self-efficacy was composed of five factors, namely interpersonal skills, task performance skills, anxiety, planned performance, and challenging action. Clothing behavior was composed of five factors, namely pleasure, coordinated clothes, uniform preference, learning behavior, and fashion oriented. Contents application of the unit 'preparing and managing clothes' was composed of two factors, namely usefulness of lectures in general, and usefulness of Hanbok lecture. The effects of clothing behavior and contents application of the unit 'preparing and managing clothes' on each of the self-efficacy variables, like interpersonal skills, task performance skills, anxiety, planned performance, and challenging action were explained by factors such as pleasure, coordinated clothes, uniform preference, learning behavior and fashion oriented, and usefulness of lectures in general and usefulness of Hanbok lecture.

• 임상간호연구
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• 제17권2호
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• pp.192-203
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• 2011

Purpose: The purpose of this study was to compare the body temperature (BT), blood pressure (BP) and shivering in patients undergoing operation under general anesthesia between the heated humidification circuit tube (HHCT) group and the non-HHCT group. Methods: Data were extracted from the participants' medical records from September 1st to December 30th, 2009. The HHCT group consisted of 50 cases who were applied with heated and humidified gas via a specially designed circuit under general anesthesia. The HHCT which was adjusted at $41^{\circ}C$ was applied from induction of general anesthesia to extubation. In comparison, the non-HHCT group consisted of 50 cases who were applied with gas through standard breathing circuit without heat and humidification. Collected data were analyzed by $x^2$ test, t-test and repeated measures ANOVA. Results: The BT and shivering were significantly different between two groups (p<.001). But the BP was was not signigicantly different between the HHCT group and the non-HHCT group. Conclusion: The application of heated and humidified gases to patients under general anesthesia was effective in preserving the body temperature and reducing the shivering.

• 대한임상검사과학회지
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• 제37권2호
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• pp.102-110
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• 2005

The purpose of this study was to examine the factors related to satisfaction of users for the order communication system (OCS). The subjects of this study were 98 clerks at Chosun university hospital. The instruments used for this study were the conveniency and the practical application of the data developed by Lee, the satisfaction level developed by Sea Seang-mi and Kim in-sook. The data was analyzed by using the t-test, ANOVA, Pearson Correlation, Stepwise Multiple Regression with SPSS 10.0 program. The mean scores of the conveniency, the practical application of the data and the satisfaction level of user for the OCS was 3.28, 3.29 and 3.34, respectively. In general characteristics of the respondents, influencing factors to the perceived the conveniency of user for the OCS were gender, career and department. In general characteristics of the respondents, influencing factors to the perceived the practical application of the data of user for the OCS were department. In general, characteristics of the respondents, influencing factors to the perceived the satisfaction level of user for the OCS were gender, career and department. The correlation between the satisfaction level and the practical application of the data were statistically significant. The main factors influencing to the satisfaction level of user for the OCS were the practical application of the data (90.3%). In conclusion, The main factors influencing to the satisfaction level of user for the OCS were the practical application of the data. Therefore, it is recommended that guidebooks of user for the OCS or various OCS programs to promote the satisfaction level of user for the OCS and to improve the satisfaction level of user for the OCS should be developed.

• 디지털융복합연구
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• 제10권11호
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• pp.619-626
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• 2012

본 연구의 목적은 일반계고와 특성화고의 스마트 기기 활용 실태와 교육용 애플리케이션 개발에 대한 인식수준을 비교 분석하여 보다 효과적인 조리교육 애플리케이션 개발 방안을 모색하는 것이다. 특성화고 학생이 일반고 학생보다 스마트 기기 활용 학습 방법을 더 선호하고, 하루 사용 시간이 더 많았다. 학습 분야는 일반고는 어학, 특성화고는 자격증에서 높게 나타났다. 스마트 기기 활용 학습의 장점은 자투리시간 활용이었고, 인프라를 가장 필요로 하였다. 가장 기대되는 콘텐츠는 일반고는 동영상 강의, 특성화고는 협력학습이었고, 가장 만족하는 것은 이동성이었다. 조리교육용 애플리케이션 개발에 대해 특성화고 학생이 더 많은 필요성을 느끼고 있었고, 더 많이 활용할 계획을 갖고 있었으며, 실습 동영상을 더 선호하였다. 희망 요리 영역은 일반고는 간편 요리, 특성화고는 조리기능사요리를 선호하였고, 애플리케이션은 포털 사이트와 학과 홈페이지에 탑재되기를 희망하였다. 그러므로, 조리교육용 애플리케이션 개발 시 실습 동영상과 조리 레시피가 포함된 시뮬레이션 학습 위주로 제작하고, 평가 기능을 추가하여 학업 성취 수준을 확인할 수 있도록 한다. 조리기능사 요리가 포함된 5분 이내의 콘텐츠가 될 수 있도록 제작하며, 각 차시별 과제 목표를 제시하고, 문제 해결을 위한 정보를 구체적으로 제공한다. 학습 몰입도를 높이기 위해 영상, 음악, 텍스트가 포함된 콘텐츠를 첨부한다. 수업의 시작과 전개, 정리의 흐름이 있도록 하며, SNS 협력학습 서비스를 활용하여 학습 주체간의 소통이 증진될 수 있도록 한다.

• 대한수학회논문집
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• 제27권3호
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• pp.455-464
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• 2012

In the previous paper [8], the author gave a determinant formula of relative zeta function for cyclotomic function fields. Our purpose of this paper is to extend this result for more general function fields. As an application of our formula, we will give determinant formulas of class numbers for constant field extensions.

• 한국가정과교육학회지
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• 제1권1호
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• pp.19-31
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• 1989

The purpose of this study is 1) to find out the general tendency of high school girls’recognition and application of Home Economics course 2) to find out the variables influencing on the recognition and application of Home Economics Course 3) to find out the relationship between recognition and application of Home Economics Course. The subjects of this study were 639 high school girls of third grade in Chunnam province including Ko-heung Kun. The questionaire was used as a methological instrument. The statistics used for data analysis were x$^2$-test, T-test and F-test. The major findings were as follows. 1. The general tendency about recognition and application of Home Economics Course. A third of 639 subjects answered that Home Economics Course was helpful for their livers. 45.1% of the subjects felt that Home Economics Course was eaiers to study than the other courses required in High school. 31.9% of the subjects liked Home Economics Course while 11.9% of subjects disliked it. 79.7% of the subjects wanted more practical studies and practices than theoretical studies in class of Home Econmics Course. The degree of application of Home Economics Course was low level； average score was 19.6 out of 30 points. 2. Variables related to the recognition and application of Home Economics Course. Variables influencing on the recognition toward Home Economics Course were the degree of helping housework, the degree of happiness as a female, and the degree of satisfaction with home life. The higher the level of income, happiness as a female and the satisfaction with home life, the higher the application score of Home Economics Course. 3. Relationship between recognition and application of Home Economics Course. There was a positive relationship between recognition and application of Home Economics Course. Students who showed affirmative responses to Home Economics Course, their application scores of home Economics Course were higher than those of students who showed negative responses.

• 한국정보통신학회논문지
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• 제16권1호
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• pp.107-112
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• 2012

본 연구에서는 임베디드 시스템, 특히 블루투스 베이스밴드에서 사용이 가능한 범용 GPIO (general purpose input output)를 설계하였다. 제안하는 구조는 AMBA 버스구조의 APB 저전력 버스에 호환되도록 설계하였다. 응용 분야가 다양한 임베디드 시스템에서는 GPIO 방식의 인터럽트 소스가 가장 유용하게 사용된다. 본 논문에서는 에지 반응 방식과 레벨 반응 방식 모두를 고려하여 인터럽트를 수용할 수 있도록 설계하였고, 동작 폴라리티를 선택할 수 있어 다양한 응용의 블루투스 임베디드 디바이스에 유연하게 적용될 수 있도록 고려하였다. 설계한 GPIO 모듈은 Altera QuartusII 툴을 사용하여 자동합성하여 P&R을 수행하였다. 결과물은 CycloneII FPGA로 구현하였으며 타겟으로 정한 25MHz에서 충분히 동작 가능하다.