• 한국컴퓨터정보학회논문지
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• 제16권2호
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• pp.193-199
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• 2011

본 논문에서는 이동기기에서 배터리를 고려한 저전력 알고리즘을 제안하였다. 제안한 알고리즘은 이동기기에서 배터리의 잔량에 따라 태스크를 수행할 수 있도록 소모전력을 줄이는 방법으로 주파수를 변화시킨다. 배터리의 잔량이 수행하고자하는 태스크의 소모 전력보다 작을 경우 태스크를 수행시키기 위해 주파수를 낮춘다. 주파수 조절은 태스크에 따라 전체 시스템에서 사용되는 디바이스들 중에서 가장 높은 주파수를 가진 디바이스를 우선대상으로 수행한다. 주파수의 감소는 두 번째로 큰 주파수를 가진 디바이스의 주파수로 변화하여 소모전력을 계산한다. 계산된 소모전력이 배터리의 잔량보다 클 경우 단계적으로 주파수를 조절하여 소모전력을 낮추며 배터리의 잔량으로 태스크를 수행 할 수 있을 때 까지 주파수를 조절한다. 실험은 주파수를 조절하여 소모 전력을 줄이는 방법을 이용한[6]과 같은 환경에서 배터리의 잔량을 고려하여 태스크를 수행할 수 있도록 주파수를 조절하였다. 실험 결과 [6]에서 수행되지 않는 배터리 잔량에서도 태스크가 동작되는 결과를 나타내었다.

• Clinical and Experimental Pediatrics
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• 제63권6호
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• pp.232-236
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• 2020

Background: Children today get access to smartphones at an early age. However, their ability to use mobile apps has not yet been studied in detail. Purpose: This study aimed to assess the ability of children aged 2-8 years to perform touchscreen gestures and follow prompting techniques, i.e., ways apps provide instructions on how to use them. Methods: We developed one mobile app to test the ability of children to perform various touchscreen gestures and another mobile app to test their ability to follow various prompting techniques. We used these apps in this study of 90 children in a kindergarten and a primary school in New Delhi in July 2019. We noted the touchscreen gestures that the children could perform and the most sophisticated prompting technique that they could follow. Results: Two- and 3-year-old children could not follow any prompting technique and only a minority (27%) could tap the touchscreen at an intended place. Four- to 6-year-old children could perform simple gestures like a tap and slide (57%) and follow instructions provided through animation (63%). Seven- and 8-year-old children could perform more sophisticated gestures like dragging and dropping (30%) and follow instructions provided in audio and video formats (34%). We observed a significant difference between the number of touchscreen gestures that the children could perform and the number of prompting techniques that they could follow (F=544.0407, P<0.05). No significant difference was observed in the performance of female versus male children (P>0.05). Conclusion: Children gradually learn to use mobile apps beginning at 2 years of age. They become comfortable performing single-finger gestures and following nontextual prompting techniques by 8 years of age. We recommend that these results be considered in the development of mobile apps for children.

• 한국지진공학회논문집
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• 제14권6호
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• pp.23-31
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• 2010

우리나라 공동주택의 대부분을 이루는 철근콘크리트(RC) 벽식 구조의 지진에 대한 거동을 예측하기 위해 신뢰성이 있으며 사용하기 간편한 해석모델의 수립이 필요하다. 본 논문은 기 수행된 RC 전단벽 부분구조의 횡 하중 반전주기 실험결과를 기준으로 하여 PERFORM 3D에서 가용한 RC벽 요소 및 보 기둥 요소 해석모델을 응용하여 최대한 실험결과와 근접한 결과를 주는 모델을 수립하였다. 전체 및 국부거동에 있어서 이 해석결과를 실험결과와 비교함으로써 해석의 신뢰성과 한계성을 확인함과 동시에, 실험에서 파악하기 어려운 내부 저항력의 구성, 전체 구조물의 저항 메카니즘에 대한 정량적인 분석을 제시한다.

• 근관절건강학회지
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• 제26권2호
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• pp.131-140
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• 2019

Purpose: The purpose of this study was to explore factors influencing for intention to perform cardiopulmonary resuscitation (CPR) in undergraduate nursing students. Methods: A total of 146 students at G University participated in this descriptive study. With a self-administered questionnaire, the data were collected from November 26 to November 30, 2018. Results: In this study, intention to perform CPR had significant positive correlations with attitude of CPR (r=60, p<.001), self-efficiency of CPR (r=.53, p<.001), and confidence in automated external defibrillator (AED) utilization (r=.47, p<.001). Stepwise multiple regression analysis showed that factors influencing for intention to perform CPR were attitude of CPR (${\beta}=.60$, p<.001) and confidence in AED utilization (${\beta}=.26$, p<.001). Overall, approximately 41% of the variability in intention to perform CPR was explained by these variables ($R^2=.41$, F=50.04, p<.001). Conclusion: In order to promote the intention to carry out CPR among nursing college students, it will be necessary to develop strategies to strengthen a positive attitude toward CPR in fundamental nursing and clinical nursing practices in addition to improve confidence in AED utilization.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2002년도 춘계학술대회 논문집
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• pp.146-148
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• 2002

An automatic inspection vision systems whose development was the industry applications motor rear side member. This system are connected to the 9 ea camera fur the process inspection the bolt, nuts, units in the rear side member product. This automatic inspection vision systems can perform inspection of not attached the bolt, nuts, units, etc fast and accuracy in react time fashion. And then perform very sophisticated inspection which human workers can not perform.

• 대한임베디드공학회논문지
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• 제7권3호
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• pp.143-150
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• 2012

In this paper, we introduce an intelligent quadruped walking robot that can perform stable walking and a couple of intelligent behaviors. The developed robot has two sets of ultrasonic sensors and six sets of infrared sensors and can perform obstacle avoidance by detecting obstacles and estimating the distances and directions of those obstacles. The robot also has a stereo camera and can paly soccer by detecting a ball and estimating the 3 dimensional coordinates of the ball. In performing those intelligent behaviors, the robot needs to have the capability of generating its walking patterns, solving the inverse kinematics problem, and interfacing several sensors in realtime. Therefore we designed a hierarchical controller that consists of a main controller and an auxiliary controller. The main controller is a 32-bit DSP that can perform fast floating-point opertaion and the auxiliary one is a 8-bit micro-controller. We showed that the developed quadruped walking robot successfully perform those intelligent behaviors through experiments.

• 전산구조공학
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• 제33권1호
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• pp.23-28
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• 2020

• 한국보건간호학회지
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• 제29권1호
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• pp.40-52
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• 2015

Purpose: This study examined the characteristics of preparation to perform activities of suicide prevention according to professional type. Methods: A structural survey was conducted from Dec. 10, 2012 to Jan. 4, 2013 for 355 participants working at suicide prevention institutions in S city. The data were analyzed in terms of frequency, percentage, mean, standard deviation, t-test, ANOVA, Pearson's correlation coefficient, and multiple regression using SPSS/WIN 18.0. Results: Self-evaluation knowledge of characteristics was a significant distance depending on education and economic status. Participants were classified according to four groups based on professional type; public health nurse, social worker, fire officer, and administrative staff. Significant differences in experiences in suicide, the several items of self-evaluation knowledge, and the preparation to perform activities of suicide prevention were observed according to professional type (p<.05). Correlation among the experience, self-evaluation knowledge and preparation to perform activities of suicide prevention showed a positive correlation in public health nurse, social worker, and administrative staff (p<.05). In all professional types, the variable that predicted preparation to perform activities of suicide prevention was self-evaluation knowledge (p<.001). Conclusion: Tailor-made suicide prevention programs that affect changes in preparation to perform activities of suicide prevention should be developed by professional types.

• 중환자간호학회지
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• 제8권1호
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• pp.25-40
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• 2015

Purpose: The purpose of the study was to identify the frequency and importance of task performance and the perceived competence to perform of the emergency nurse practitioners (ENPs) certified in Korea. Method: This cross-sectional study was conducted with 41 ENPs certified by March 2012. The questionnaire to identify frequency, importance, autonomy, and perceived competence to perform 131 typical ENP task elements was developed on the basis of the standardized role of an ENP defined by the Korean Accreditation Board of Nursing Education. The data were analyzed using descriptive statistics. Results: The professional nursing practice showed the highest scores for performance frequency, task importance, autonomy, and perceived competence to perform as compared to other job categories. Clinical decision making was the most frequently performed duty. Data collection was the duty with highest levels of importance, autonomy, and perceived competence for the ENPs. However, the ENPs reported that research was the duty with the lowest levels of frequency, importance, autonomy, and perceived competence Conclusion: ENPs in Korea perform various tasks. In order to improve their position in the field, it is necessary to clarify their job description and enhance their competence to perform evidencebased professional nursing practices.

• 보건교육건강증진학회지
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• 제25권4호
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• pp.43-54
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• 2008

Objectives: To identify the willingness of laypersons to perform the cardiopulmonary resuscitation(CPR), we analyzed their characteristics of socio-economic status and health-medical conditions associated with their willingness. Methods: Based on a health survey of Incheon Metropolitan City adults(N=5,114), tests of the differences between a group with willingness to perform CPR(=1,531) and a group with non-willingness to perform CPR(=3,583), and a logistic regression analysis of two groups were executed on socio-economic status-gender, age, marital stats, education level, jobs, and monthly household income-and health-medical conditions-CPR-related self-confidence, CPR education, chronic diseases, accident experience, EMS(emergency medical service) experience, and health status. Results: The rate of the willingness group was 29.9%, which was relatively lower than other developed countries. There were statistically significant differences between the willingness group with the non-willingness group on gender, age, jobs, CPR-related self-confidence, CPR education, and so on. Furthermore, Gender, age, students or armed forces among jobs, CPR-related self-confidence, and CPR education were statistically significant influential factors on the willingness to perform CPR. Conclusion: This study indicated that there was considerable variation in socio-economic status and health-medical conditions associated with willingness to perform CPR in Incheon. The CPR education aimed at increasing CPR-related self-confidence and correcting inaccurate perceptions of CPR attitudes would promote its use in response to out-of-hospital cardiac arrest.