• 산업공학
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• 제11권2호
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• pp.65-78
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• 1998

The letters of the automobile tire are usually engraved on the side-wall. The shape of the side-wall is a sculptured surface generated by the rotational sweeping of a profile curve. The letters laid on the side-wall are usually designed by a 2-dimensional CAD. It is impossible to machine the letters on the surface accurately by 3-axis NC machining, because the axis of cutter should be tilted to align with the normal vector of the surface. In this case. the degree of freedom for the machine is at least four. This paper describes an idea for tool path generation of a 4-axis machine by using the 2-dimensional CAD data of the letters and the surface of the side-wall. This study includes the following procedures; (1) measuring the profile of the side-wall surface and curve-fitting of the measured points. (2) the 'non-parallel projection' of the letters on the side-wall, and (3) an inverse kinematics of the 4-axis lettering machine. Procedures in this paper are programmed in C-language on Windows95 environment. With a PC based CNC controller and a 4-axis lettering machine. these are tested sucessfully for the practical use.

• 대한한의진단학회지
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• 제11권2호
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• pp.84-95
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• 2007

Background and Purpose: We have studied the trends of EEG signals in the voluntary breathing condition by applying the fractal analysis. According to chaos theory, irregularity of EEG signals can result from low dimensional deterministic chaos. A principal parameter to quantify the degree of Chaotic nonlinear dynamics is correlation dimension. The aim of this study was to analyze correlation between the correlation dimension of EEG and HRV(heart rate variability). We have studied the trends of EEG signals in the voluntary breathing condition by applying the fractal analysis. Methods: EEG raw data were measured by moving windows during 15 minutes. Then, the correlation dimension(D2) was calculated by each 40-seconds-segment in 15 minutes data, totally 36 segments. 8 channels EEG study on the Fp, F, T, P was carried out in 30 subjects. Results and Conclusion: Correlation analysis of HRV was calculated with deterministic non-linear data and stochastic non-linear data. 1. Ch1(Fp1), Ch4(F3), Ch4(F4) is positive correlated with In LF. 2. Ch1(Fp1), Ch3(F3) is positive correlated with In TF.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제5권2호
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• pp.157-167
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• 1999

편리한 사용 방법과 멀티미디어 데이터 서비스를 지원하는 웹은 현 인터넷 환경에서 이종 컴퓨터간의 주요한 정보 전달 수단으로 자리잡았다. 그러나 웹이 사용하고 있는 통신 프로토콜 스택만으로는 부상하고 있는 정보 형태인 실시간 멀티미디어 데이터의 서비스를 적절히 지원할수 없었다. 이에 본 논문에서는 실시간 전송 프로토콜인 RTP/RTCP를 웹 통신 프로토콜 스택에 추가하여 실시간 멀티미디어 세션의 서비스를 지원할수 잇도록 그 기능이 확장된 웹 시스템의 구현을 소개한다. 이는 MBone을 통해 실시간으로 멀티캐스트되고 있는 멀티캐스트 되고 있는 멀티미디어 세션의 서비스를 웹에서 지원할수 있도록 한 것으로, 기존의 MBone응용들을 수용한 형태를 가진다. 이를 위하여, MBone상에서 개설된 세션 정보를 수집하여 이를 관리하고 그 정보들을 웹 문서로 제공하는 프로그램인 '웹 SDR'과 MBone을 통해 멀티캐스트되는 실시간 멀티미디어 세션을 웹상에서 시청할수 있도록 웹 브라우저의 기능을 확장한 Windows 95 플랫폼 기반의 '실시간 멀티미디어 웹 플러그인'을 구현하였다 그리고 , 본 연구에서 개발한 수신 위주의 웹 시스템의 서비스 품질을 개선하기 위하여 현 인터넷 환경을 고려한 서비스 품질 제어 기법인 '관측 기반의 수신단 QoS 제어 알고리즘'을 제안하고, 이를 적용하여 실시간세션 서비스 품질이 개선됨을 보였다.

• 한국가정과학회지
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• 제6권2호
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• pp.83-95
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• 2003

The purpose of this study was to research adolescents' practical awareness about the contents(classify them into four units, choice and dressing of clothes, textile and management of clothes, design and sewing of clothes, knitting and embroidery) clothing and textiles education in their real life. This is the investigation of which 730(middle school students 246, high school students 248, university students 236) girl students located in Junrabukdo and Choongchungnam. In this statistical analysis. SPSS 10.0 for Windows Program was utilized to calculate percentage, mean and standard deviation. Also, these materials wert verified by t-test, One-way Anova. The main results of obtained this study are as follows. Adolescents' practical awareness about the contents of clothing and textiles education in their real life appears to be low(only 8 items were over median point of 3.0) There was a significant difference in practical awareness of contents of clothing and textiles education according to early$.$middle$.$latter adolescents and demographic variables differed significantly. These results should be provide fundamental information for improving students' critical practice in their real life. Since this study has touched only limited research on the topic of clothing and textiles education, it is essential that further research covering a wider array of themes be done in the future.

• PNF and Movement
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• 제13권2호
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• pp.95-102
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• 2015

Purpose: The purpose of this study was to analyze the effect of arm flexion patterns of proprioceptive neuromuscular facilitation on muscle activation in the contralateral lower extremity. Open kinematic chain and closed kinematic chain positions were used. Methods: This study used an electromyogram (MP150, Biopac Systems, USA) to measure muscle activation in 20 healthy male students. Comparative analysis was completed on muscle activation of the vastus lateralis, biceps femoris, tibialis anterior, and gastrocnemius of the contralateral lower extremity. Open kinematic chain and closed kinematic chain positions were used with a unilateral arm flexion-abduction-external rotation pattern. Paired t-tests using the SPSS 12.0 for Windows analyzed the data produced by the electromyogram. Results: There was a statistically significant difference in muscle activation in the biceps femoris, gastrocnemius, and tibialis anterior when the open kinematic chain and closed kinematic chain positions were compared (p < 0.05). Conclusion: The biceps femoris, gastrocnemius, and tibialis anterior muscles showed greater muscle activation in the closed kinematic chain position when compared to the open kinematic chain position.

• The Journal of Korean Physical Therapy
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• 제31권1호
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• pp.40-48
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• 2019

Purpose: This study assessed the current working conditions and job satisfaction on aquatic therapy performed by physical therapists in South Korea. Methods: A total of 139 (managers: 53, staff: 86) physical therapists participated in this survey (90 questionnaires) and the data were analyzed using the SPSS 21.0 Windows. Results: The retention conditions of aquatic therapy facilitation was high in the rehabilitation centers (or disabled living facilities) and rehabilitation hospitals. On the other hand, there were regional variations. The physical therapists in this field were likely to have limitations or restrictions of professional aquatic therapy education. The subjects showed a tendency for a career interruption during their fifth working year. The overall job satisfaction on aquatic therapy of physical therapists was high (managers: 94.3%, staff: 95.3%, p=0.276), but the work intensity was higher than the other parts of physical therapy and the relative reward was comparatively low (managers: 60.3%, staff: 66.3%, p=0.865). Conclusion: Based on this study, the current working conditions regarding aquatic therapy by physical therapists were assessed. These results will help enhance aquatic therapy and/or in aquatic therapy facilitation.

• 융합보안논문지
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• 제19권1호
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• pp.87-95
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• 2019

점차 고도화되는 사이버 공격에 의한 많은 침해사고로 피해가 증가하고 있다. 많은 기관 및 기업체에서는 사고 탐지를 위한 인프라만에 많은 자원을 투자하기에 초기대응에 미흡하다. 침해사고의 초기대응은 공격의 유입경로 파악이 우선이며, 이루어지고 있는 많은 사이버 공격은 소프트웨어 취약점을 대상으로 하고 있다. 따라서, 소프트웨어 취약점을 대상으로 윈도우 시스템의 아티팩트를 분석하고, 분석한 데이터를 분류하면 신속한 초기대응에 활용할 수 있다. 그러므로 소프트웨어 별 공격 유입 시 남는 아티팩트를 분류하여 침해사고 분석 시에 활용할 수 있는 아티팩트 그룹핑을 제시한다.

• 한국응급구조학회지
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• 제23권1호
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• pp.113-123
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• 2019

Purpose: The aim of this study was to provide basic data to improve the survival rate of pre-hospital cardiac arrest patients. This study suggests a more effective method of performing effective chest compressions for a cardiac arrest patient in a moving ambulance. Methods: To compare the differences between gender and license (qualification), SPSS 18.0 (Windows) was used. Independent and paired t-tests were used for differences between before and after wearing a rescuer's belt. Results: The success rate of chest compressions according to gender was higher in males ($68{\pm}21.91%$) than in females ($25.04{\pm}16.88%$). There was no difference according to license ($44.70{\pm}26.63$ for paramedic, $45.05{\pm}19.25$ for nurse). However, the depth (mm) and the success rate (%) were improved during the evaluation of chest compressions when wearing the rescuer's belt (depth: $46.95{\pm}6.49$ vs. $49.55{\pm}6.05$, success rate: $44.80{\pm}24.66$ vs. $57.39{\pm}26.823$). Conclusion: Wearing a rescuer's belt in an ambulance during patient transport can result in deeper and more accurate chest compressions; therefore, it is expected to be effective in recovering the circulation of patient with cardiac arrest.

• Asian Pacific Journal of Cancer Prevention
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• 제13권11호
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• pp.5773-5775
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• 2012

Objective: To assess the diagnostic and prognostic value of AFP and des-gamma-carboxyprothrombin (DCP) in combination and alone for hepatocellular carcinoma. Materials and Methods: A case control study carried out in the Department of Biochemistry of Manipal College of Medical Sciences, Pokhara, Nepal between $1^{st}$ January 2010 and $31^{st}$ December 2011. The variables collected were age, gender, BMI, total proteins, albumin, AST, ALT, total bilirubin, DCP, AFP. Approval for the study was obtained from the institutional research ethical committee. Estimation of AFP was performed by ELISA reader for all cases. Analysis was done using descriptive statistics and confidence interval (CI). The data was analyzed using Excel 2003, R 2.8.0 Statistical Package for the Social Sciences (SPSS) for Windows Version 16.0 (SPSS Inc; Chicago, IL, USA) and the EPI Info 3.5.1 Windows Version. Results:The mean age of HCC cases was $53.6{\pm}14.93$ yrs. The percentage of females was less than males in both cases (23%) and controls (29%). The specificity of DCP reached 100% when its values was equal or greater than 150 (MAU/ml) for 0, 3, 6, 9, 12 months preceding the diagnosis of HCC. Similarly, the specificity for AFP was also nearly 100% when its value was equal or greater than 200 ng/ml 0, 3, 6, 9, 12 months earlier to the finding of HCC. The specificity of DCP (${\geq}40MAU/mL$) and AFP(${\geq}20$ ng/mL) in combination was 93%, 97%, 95%, 96%, 97% in respect to 0, 3, 6, 9, 12 months prior to the diagnosis of HCC. Conclusion: The combination of both DCP and AFP will improve the finding of initial HCC and the sensitivity of these markers was utmost at the time of HCC identification and noticeably lesser at former time points.

• 간호행정학회지
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• 제9권4호
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• pp.571-583
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• 2003

Purpose: This study was aimed by presenting basic data of nurses' manpower management on studying about estimative variables and provability assumption whether it is desire or no on the transfer of nurses' duty post. Method: The study was designed retrospective survey and the subjects of this study consisted of 508 nurses who have engages in the K-university hospital. Data were analyzed by SPSS windows for 11.0, by logistic regression. Result: The status on clinical specific variables were verified on estimative variable about whether it is desire or no on the transfer of nurses' post of duty that staff nurses was 3.95 times when set the standard over the charge nurses, and unsatisfied nurses than satisfied nurses on the place of duty at present was 1.4 times. On the low domains of duty's satisfied degree was verified on predictive variable about whether it is desire or no on the transfer of nurses' post of duty that nurses of low feeling of satisfaction about personal relationship was 1.19 times, unsatisfied nurses about hospital management was 2.01 times verified on desiring transfer to other places. Conclusion: The suitability of estimative model whether it is desire or no on the transfer of nurses' post of duty explainable by the variable of the status, the feeling of satisfaction on post of duty, the personal relationship the hospital management and estimative probability was 80.9%.