• Women's Health Nursing
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• v.11 no.1
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• pp.20-26
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• 2005

Purpose: The purpose of this study was to understand self confidence during delivery in laboring women and to identify the factors influencing self confidence for delivery. Method: The participants of the study were 166 women who were admitted to a delivery room at C hospital in Seoul from July 1 to October 31, 2002. Data was collected using a structured questionnaire, self confidence scale, anxiety scale, knowledge of childbirth scale and graphic rating scale. The data was analyzed by the SPSS PC+ program. For the analysis of collected data, frequency analysis, Pearson's correlation, multiple linear regression analysis and stepwise selection method was used. Result: Self confidence during delivery had negative correlation coefficients with anxiety, and positive correlation coefficients with endurance of pain, husband support during pregnancy, age and parity. Anxiety was the highest factor influencing self confidence for delivery(40.0%). Endurance of pain, husband support during pregnancy and age accounted for 49.0% of self confidence in laboring women. Conclusion: The factors influencing self confidence during delivery were anxiety, endurance to pain, husband support during pregnancy and age. Further studies need to be done to identify interventions for overcoming on anxiety, promoting endurance of pain, and increasing husband support during pregnancy.

• Proceedings of the KOSOMBE Conference
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• v.1992 no.05
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• pp.152-154
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• 1992

We computerized outpatient's prescription using personal computer and local area network(LAN). The information and history of patient which is stored in the HOST computer is transfered to the local file server via emulatort & LAN. Then, the computerized outpatient's prescription which is made in each examination room is transfered to the admission of discharge office and pharmacy via LAN. In the admission of discharge office, drug charge is automatically calculated, and the prescription and envelope is printed out automatically in the pharmacy. Using this system, the patient takes the drug faster than before, eventually we improve medical service. Also, this system manage hospital works and administration effectively.

• Proceedings of the KIEE Conference
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• 1998.11c
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• pp.822-824
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• 1998

The lithium polymer battery with polymer electrolyte is expected as a safe and long cycle life battery. This paper reports primarily the recent development results of a solid polymer electrolyte, which is a key point of the secondary battery system. The new type of polymer electrolyte was prepared under a dry Ar atmosphere by dissolving $LiCIO_4$ in a matrix of EC, PC and then dispersing polyacrylonitrile(PAN). Also adding some inorganic filler $Al_2O_3$. The dispersed solution heated at $120^{\circ}C$. The polymer electrolyte were characterized by EIS(Electrochemical Impedance Spectroscopy), TGA(Thermo Gravimetric analysis), DMA(Dynamic Mechanical Analyzer), DSC (Differential Scanning Calorimetry). The lithium ion yield is 0.29 when PAN-$Al_2O_3$ which was applied DC 5mV. The ionic conductivity of PAN, PAN-$Al_2O_3$ polymer electrolytes were showed $1.0{\times}10^{-4}S/cm$, $8.4{\times}10^{-4}S/cm$ at room temperature. When inorganic filler was added in the polymer electrolyte, ionic conductivity and lithium yield more larger than without inorganic filler.

• The Journal of the Acoustical Society of Korea
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• v.20 no.4E
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• pp.52-60
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• 2001

This paper describes real time implementation of subband sound localization system on a floating-point DSP TI TMS320C31. The system determines two dimensional location of an active speaker in a closed room environment with real noise presents. The system consists of an two microphone array connected to TI DSP hosted by PC. The implemented sound localization algorithm is Subband CPSP which is an improved version of traditional CPSP (Cross-Power Spectrum Phase) method. The algorithm first split the input speech signal into arbitrary number of subband using subband filter banks and calculate the CPSP in each subband. It then averages out the CPSP results on each subband and compute a source location estimate. The proposed algorithm has an advantage over CPSP such that it minimize the overall estimation error in source location by limiting the specific band dominant noise to that subband. As a result, it makes possible to set up a robust real time sound localization system. For real time simulation, the input speech is captured using two microphone and digitized by the DSP at sampling rate 8192 hz, 16 bit/sample. The source location is then estimated at once per second to satisfy real-time computational constraints. The performance of the proposed system is confirmed by several real time simulation of the speech at a distance of 1m, 2m, 3m with various speech source locations and it shows over 5% accuracy improvement for the source location estimation.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.12 no.1
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• pp.131-138
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• 2005

Purpose: This study was performed to identify the effects of intraoperative music therapy on the anxiety level of adult patients undergoing local anesthesia in the operating room. Method: The research design was a nonequivalent control group pretest-posttest. Data collection was done with 48 patients undergoing local anesthesia from June 2003 to September 2()03. The 24 patients in the experimental group were given music therapy through headphones from the beginning of the operation to the end of the operation with local anesthesia. The data were analyzed using SPSS/PC 10.0 for Windows. Results: Postoperative state anxiety scores were significantly different between the experimental group and the control group. Intraoperative pulse rates were significantly different between the two groups. But systolic and diastolic blood pressures and respiratory rates were not significantly different between the two groups. Conclusion: Considering these results, music therapy can be regarded as an effective nursing intervention that relieves anxiety for adult patients undergoing local anesthesia. However, to determine the best use of this therapy, further study is required for different types of anesthesia and operations such as ambulatory surgery.

• Journal of Ocean Engineering and Technology
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• v.7 no.2
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• pp.19-29
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• 1993

The static tensile tests of GFRP, ID300, CFRID300 and CFRPEEK were made on the plain and notched specimens at room temperature. The results were discussed based on linear notch mechanics which was proposed by H.Nistani. The fracture of notched GFRP, ID300, CFRID300 and CFRPEEK specimens is controlled by the elastic maximum stress, $({\sigma}_max)$, and the notch root racius,$\rho$, alone, independently of the other geometrical conditions. The relation between fracture nominal stress,$({\sigma}_max)$, and stress concentration factor, $K_t$ and a part where $({\sigma}_c)$ is nearly constant independent of $K_t$. A similar phenomenon can be seen in the fatigue tests of notched specimes under rotating bending or push-pull. The almost constant $({\sigma}_c)$ values correspond to the nearly constant apparent stress intensity factor, $K_{1pc}$ values, obtained by assuming ,$\rho$=0. This can be attributed to the existence of the stable crack. Linear notch mechanics is very useful for analyzing the static tensile fracture behavior of notched GFRP, ID300, CFRPEEK specimens.

• The Journal of the Acoustical Society of Korea
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• v.13 no.5
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• pp.15-23
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• 1994

We developed an electronic lens for acoustic imaging systems, which is linear array with 31 microphones equally spaced with distance 34mm. Resonant frequency fo receiver circuit coupled to microphone is 20 kHz. We arranged 16 microphones horizontally and 15 microphones vertically, so that the array allows us to obtain a 2 dimensional angle of source, and to track the motion of source in real time. Due to the problem of aliasing in discrete Fourier Transfrom, the maximum observable angle of the lens is limited to 15${\circ}$. We also employed quadrature phase detection scheme to adjust the focus. We have tested the acoustic lens with a personal computer in an anechoic room and obtained the results agreed with the acoustic imaging theory.

• Korean Institute of Interior Design Journal
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• v.13 no.6
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• pp.91-98
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• 2004

The purpose of this study was to investigate the residents' awareness toward the differentiation of design factors in apartments in order to offer the information helpful to housing designers. Documentary research and questionnaire survey methods were used in this study. In this survey, internet web survey was carried out using questionnaire tool that was extracted in the Preliminary survey. This web survey was carried out on 124 housewives from January 6 2004 to January 20 2004. Data were analyzed with the SPSS PC+ window version 11.0. The major results of this study are as follows. 1) Residents' educational level is high and they are so young nuclear family and they live in Seoul and metropolitan area. 2) They want 85$m^2$ type apartment and the dress room that is so large. 3) Although they have evaluate very Important factors to architectural design which are apartment plan design, space design, interior design, storage design, equipment and high-tech system design, it seems that they are interested in interior design among the design factors in apartments. 4) There is significant difference the evaluation of importance toward the differentiation of design factors in apartments according to housing size when they move to go.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.08a
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• pp.180-180
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• 2010

The design and implementation of high rate deposition process and anti-scratch property of silicon oxide film by PECVD with UHF power were investigated according to the effect of UHF input power with HF bias. New regime of high rate deposition of SiOx films by hybrid plasma process was investigated. The dissociation of OMCTS (C8H24Si4O4) precursor was controlled by plasma processes. SiOx films were deposited on polyethylene terephthalate (PET) and polycarbonate substrate by plasma enhanced chemical vapor deposition (PECVD) using OMCTS with oxygen carrier gas. As the input energy increased, the deposition rate of SiOx film increased. The plasma diagnostics were performed by optical emission spectrometry. The deposition rate was characterized by alpha-step. The mechanical properties of the coatings were examined by nano-indenter and pencil hardness, respectively. The deposition rate of the SiOx films could be controlled by the appropriate intensity of excited neutrals, ionized atoms and UHF input power with HF bias at room temperature, as well as the dissociation of OMCTS.

• Proceedings of the Korean Vacuum Society Conference
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• 2014.02a
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• pp.330.1-330.1
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• 2014

개인용 노트북, 태블릿 PC, 핸드폰 기술 발전에 의해 언제 어디서나 데이터를 작성하고 기록하는 일들이 가능해졌다. 특히 cloud 시스템을 이용하여 데이터를 휴대기기에 직접 저장하지 않고 server에 기록하는 일들이 가능해짐에 따라 server 기기의 성능, server-room power 및 space 에 대한 관심이 증가하였다. Storage class memory (SCM) 이란 memory device와 storage device의 장점을 결합한 memory를 일컫는 기술로 현재 소형 디바이스 부분부터 점차 그 영역을 넓히고 있다. 그중 phase change material을 이용한 phase change memory (PCM) 기술이 가장 각광받고 있다. PCM의 경우 scaling됨에 의해 cell간의 열 간섭으로 인한 data 손실의 우려가 있어 cell의 면적을 최소화 하여 소자를 제작하여야 한다. 기존의 sputtering등의 PVD 방법으로는 한계가 있어 ALD 공정을 이용한 PCM에 대한 연구가 활발히 진행중이다. 특히 tellurium 원료기체로 silyl 화합물 [1]을 사용하여 주로 $Ge_2Sb_2Te_5$의 조성에 초점을 맞춰 진행되고 있으나, 세부 공정에 대한 기본적인 연구는 미비하다. 본 연구에서는 Ge-Sb-Te 3원계 박막을 형성하기 위한 Sb-Te 화합물의 증착 공정에 대한 연구를 수행하였다. 특히 원료기체로 Si이 없는 새로운 Te 원료기체를 이용하여 조성 조절을 하였고, 박막의 물성을 분석하였다. 또한 공정온도에 따른 박막의 물성 변화를 분석하였다.