• 한국진공학회지
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• 제16권1호
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• pp.40-45
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• 2007

본 연구에서는 광전자 소자에 폭넓게 사용되는 ZnCdSe 화합물 반도체의 end-point인 CdSe의 유전함수 spectrum을 Vacuum Ultra Violet spectroscopic ellipsometry(타원편광분석법) 측정하여 분석하였다. 측정 결과는 변수화 모델을 이용하여 분석하였으며 그 결과 6 eV 이상에 존재하는 전자전이점들을 확인할 수 있었고 CdSe의 Critical Point(CP) 구조를 수치화 함으로써 온도나 화합물 함량에 따른 광특성 의존성 연구 등에 활용될 수 있는 database를 확보하였다.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2000년도 춘계학술대회논문집 - 한국공작기계학회
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• pp.252-257
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• 2000

This paper describes a look-ahead algorithm of PCNC(personal computer numerical control). The algorithm is based on acceleration/deceleration before interpolation never including a command error and determines a velocity value in end point of each block(or start point of each block). The algorithm is represented as following; 1) calculating two maximum arrival velocity(v1, v2) by a acceleration value, a command velocity and distance in a previous block and a next block, 2) getting a tangent velocity(v3) of the adjacent blocks, 3) choosing a minimum value among these three velocities, and 4) setting the value to a velocity of a start point of the next block(or a end point of the previous block). The proposed look-ahead algorithm was implemented and tested by using a commercial RTOS(real time operation system) on the MS-Windows NT 4.0 in a PC platform. For interfacing to a machine, a counter board, a DAC board and a DIO board were used. The result of the algorithm increased a machining precision and a machining speed in many short blocks.

• 한국생산제조학회지
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• 제9권6호
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• pp.71-81
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• 2000

This paper describers a look ahead algorithm of PC-NC(personal computer numerical control). The algorithm is based on acceleration/deceleration before interpolation which doesn\`t include a command error and determines a feedrate value at the end point of each block(or start point of each block). The algorithm is represented as following; 1) calculating two maximum arrival feedrates(F$_1$,F$_2$) by an acceleration value, a command feedrate, and the distance of a NC block, 2) getting a tangent feedrate (F$_3$) of the adjacent blocks, 3) choosing a minimum value among these three feedrates, and 4) setting the value to a feedrate of a start point of the next block(or a end point of the previous block). The proposed look ahead algorithm was implemented and tested by using a commercial TROS(real time operation system) on the MS-Windows NT 4.0 in a PC platform. For interfacing to a machine, a counter board, a DAC board and a DIO board were used. The result of the algorithm increased a machining precision and a machining speed in many short blocks.

• Journal of Hospice and Palliative Care
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• 제23권3호
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• pp.139-150
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• 2020

Purpose: The purpose of this study was to investigate the levels of end-of-life care competency; knowledge, attitudes, and experiences regarding advance directives; perceptions of good death; and end-of-life care obstacles and supportive behaviors among tertiary care nurses. Methods: The participants were 150 nurses at a tertiary hospital in Jinju, Korea. The data collected using a questionnaire were analyzed using descriptive statistics, the t-test, analysis of variance, Pearson correlation coefficients, and stepwise multiple regression in SPSS for Windows version 24.0. Results: The mean (±SD) score of end-of-life care competency was 3.63 (±0.53) on a 5-point scale. A significant difference in end-of-life care competency was found according to whether nurses had experienced the death of a family member or acquaintance (P=0.029). According to stepwise multiple regression analysis, the factors affecting end-of-life care competency were the frequency of end-of-life care supportive behaviors (β=0.38, P<0.001), experience with advance directives (β=0.29, P<0.001), and marriage (β=0.15, P=0.039). This model had an explanatory power of 27.9% (F=18.87, P<0.001). Conclusion: In order to improve nurses' end-of-life care competency, it is important to strengthen end-of-life care supportive behaviors by exposing nurses to those behaviors and providing frequent experience with advance directives.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2003년도 춘계학술발표대회 개요집
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• pp.152-154
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• 2003

• 한국수자원학회논문집
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• 제40권3호
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• pp.277-286
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• 2007

사다리꼴단면을 가진 광정횡월류위어에서의 흐름특성을 3차원 수치모의를 통해 분석하였다. 본 연구결과， 본류 수로의 푸르드수가 증가함에 따라 월류유량비와 횡월류 유량계수는 감소하는 경향을 보였다. 그리고 횡월류 유량이 증가하면서 월류부 하류 수로의 주흐름구간은 축소되며，횡윌류위어의 대안 측에 형성되는 재순환영역의 크기는 증가하는 양상을 보였다. 횡월류위어 측에서의 주흐름방향 수위분포는 위어 시점부에서 급격히 하강하여 점차 증가하다 위어 종점부에서 급격히 상승했다 하강하는 양상을 보이는데, 위어 종점부에서 수위가 급히 상승하는 원인은 위어의 종점부가 흐름의 장애물로 작용하기 때문이다.

• 한국산업정보학회논문지
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• 제24권5호
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• pp.129-137
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• 2019

정보 기술의 발전에 따라 유비쿼터스 컴퓨팅 기술이 대두되고 있다. 이에 맞춰 디바이스의 소형화와 사용자의 편리성을 증대시키기 위한 여러 연구가 진행되고 있다. 그중 몇몇의 제안된 디바이스들은 사용자가 착용해야 한다는 점과 손에 들고 동작시켜야 한다는 불편함이 있다. 본 논문에서는 이러한 불편함을 해결하기 위해 텔레비전 시청 시 사용할 수 있는 가상 버튼을 제안하였다. 텔레비전을 통해 영상 시청 시 전방에서 사용자가 영상을 시청한다는 점을 이용해 카메라를 TV 상단에 설치하여 카메라가 머리 위쪽을 촬영하게 한다. 촬영된 영상에서 배경과 손 영역을 분리하여 검출하고, 검출된 손 영역에 외곽선을 검출한 후 손가락의 끝점을 검출한다. 손가락의 끝점을 검출하면 전방을 촬영하고 있는 영상 상단에 가상 버튼 인터페이스가 출력되며 검출된 손가락의 끝점이 포인터가 되어 위치정보를 갖고 버튼 안쪽에 위치할 경우 버튼이 동작한다.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2005년도 춘계학술대회
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• pp.279-290
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• 2005

The purpose of this study is to attempt a Analysis of a pointed-end Equipment Arm Safety-Accident for Fault Tree Analysis. Three major techniques were used first problem is Z-Model by which accident Analysis & prevention of a pointed-end Industry can be made, Fault Tree Analysis(FTA) bywhich quantification of a pointed-end Equipment accident Analysis can be made it 5 years in past and the third, manual-written by which minimal cut set to accident can be Identified. A example has been made of issue point a pointed-end Equipment that the Arm in loader happen to Injuries. According to the Analysis lack of safety knowledge, unsafety-behavior seem to be the primal cause of accident. Comparision of the accident cause to actual report demonstratesthat the FTA a efficient tool for Industrial Accident prevention.

• 호남수학학술지
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• 제38권1호
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• pp.127-139
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• 2016

In this paper, we construct an iteration scheme involving a hybrid pair of nonexpansive mappings and utilize the same to prove some convergence theorems. In process, we remove a restricted condition (called end-point condition) in Sokhuma and Kaewkhao's results [Sokhuma and Kaewkhao, Fixed Point Theory Appl. 2010, Art. ID 618767, 9 pp.].

• 한국인쇄학회지
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• 제8권1호
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• pp.71-87
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• 1990

This paper presents a simple algorithm to obtain three dimensional information of an object. In the preprocessing of the stereo matching,feature point informations of stero image must be less sensitive to noise and well liked the correspondance problem. This paper described a simple technique of struture feature extraction of 3-D object and used edge-end point expanding method for unconnected line instade of Hough transform. The feature such as corner point and their angles are used for matching problem. The experimental results show that the described algorithm is a useful method for stereo correspondence problem.