• Journal of the Korea Convergence Society
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• v.8 no.12
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• pp.63-69
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• 2017

This study is about the development of a smart bed control system to be able to detect the human position and body signal on bed. The main control board in the bed control system consists of the human sensing part, motor driving part and MCU. Here, to increase the credibility to check the human presence on bed, the human sensing part is combined with the human position part by membrane sensor and the body-signal detecting part of EMFI sensor. Also, remotely connecting the two detected signal to the application program of the app mode makes it possible to monitor human information on bed. In this paper, the remote function monitoring of the on-bed human information by bluetooth communication will be abe to make it applicable to the technical prevention method of the bed fall and absence accident in hospital and care facilities.

• Journal of the Korean Magnetics Society
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• v.6 no.4
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• pp.225-234
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• 1996

Needle-like $\alpha-Fe_{2}O_{3}$ particles as precursor for magnetic recording media were prepared directly from amorphous ferric hydroxide in the aqueous solution by hydrothermal reaction. Ellipsoidal or rectangular $\alpha-Fe_{2}O_{3}$ particles were formed in the range of pH 10.75~11.75. The length and acicularity of $\alpha-Fe_{2}O_{3}$ particles were decreased gradually with increasing of citric acid concentration. The formation of needle-like $\alpha-Fe_{2}O_{3}$ particles was inhibited above citric acid concentration of $1.5{\times}10^{-4}\;mol$. We can synthesize $\alpha-Fe_{2}O_{3}$ particles with the most superior acicularity at $140^{\circ}C$ and can not expect a good needle-like particles above $220^{\circ}C$.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.8 no.3
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• pp.197-203
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• 2014

In this paper, we develop an attachable head of bed(HOB) monitoring system, which can prevent ventilator associated pneumonia(VAP), and analyze the performance of the developed HOB monitoring system. The main purpose of the HOB monitoring system is to support visible HOB display for keeping patients' position effectively and collect data for analysis of the relation between HOB elevation and patients' symptom. The HOB monitoring system is developed in attached-type and uses an FIR filter with heuristic logic to remove the unwanted noise. The optical encoder is used for the performance analysis of the developed HOB monitoring system.

• The Journal of the Korea Contents Association
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• v.10 no.2
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• pp.35-42
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• 2010

The increasing regular medical check up rate for early diagnosis in disease has increasing sleep endoscopy rate because of reduction with discomfort. The purpose of this study was to determine the number of recovery bed as increasing sleep endoscopy rate using check up time, waiting time & recovery time at a general hospital in Seoul. This study was analyzed using ARENA 10.0 program. At present and as increasing of sleep endoscopy rate 10%, 20% was increased recovery time, waiting time & the rate of bed inflection. So at present, the number of recovery bed has to increase for client's safety and as increasing of sleep endoscopy rate 10%, 20% has to increase 3 and then waiting time decreased in 2 minutes.

• Journal of Digital Convergence
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• v.15 no.3
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• pp.229-236
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• 2017

The purpose of this study was to review the study design, participants, intervention and its outcomes of studies for post-dura puncture headache using systematic review. Total 4234 studies were searched from 1980 to 2016 years,15 studies were included in final. Total 5239 patients were participated in studies, and 10 RCTs studies and 5 observational studies were included. The findings showed that experimental studies used the 24hr bedrest intervention as a control group for comparing the prevalence of headache with the early ambulation intervention group. The prevalence of headache in ambulation group was lower than 24hr bedrest group (except 2 studies). The high risk methodological bias should be considered when understandings the research findings. Based on this study, meta-analysis study for investigating the proper period of time for bedrest should be performed in further study.

• The Journal of the Korea Contents Association
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• v.14 no.11
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• pp.838-848
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• 2014

The purpose of this study was to identify the effects of bed baths with 2% chlorhexidine on the incidence of Methicillin-resistant Staphylococcus aureus (MRSA) and blood stream infection (BSI) and to suggest guidelines on the therapeutic bed baths using skin cleaner. This study was designed to compare the incidence of MRSA and BSI of the experimental group(n=188) who received the bed baths with 2% chlorhexidine with the incidence of MRSA and BSI of the control group(n=199) who received the existing bed baths with soap and skin cleaner. A research design used in the study was a randomized control group posttest-only design. The experimental group had 6.7% decrease in MRSA acquisition than the control group (7.4% vs 14.1%, p=.036). The experimental group was decreased in the incidence density of MRSA than the control group (9.32 cases per 1,000 patient-days at risk of experimental group vs 15.44 cases per 1,000 patient-days at risk of control group; p=.099). The experimental group had 4.5% decrease in the rate of BSI than the control group (0.5% vs 5.0%, p=.011). The experimental group was decreased in the incidence density of BSI than the control group (0.67 cases per 1,000 patient-days at risk of experimental group vs 5.52 cases per 1,000 patient-days at risk of control group; p=.052). These finding indicated that bed baths with 2% chlorhexidine is an effective nursing intervention to decrease the incidence of MRSA and BSI.

• Journal of Korean Clinical Nursing Research
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• v.23 no.3
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• pp.293-301
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• 2017

Purpose: The purpose of this study was to examine the effects of bed angles and bed rest time combined with hemostatic methods on discomfort and hemorrhagic complications in patients after transfemoral cerebral angiography. Methods: Data were collected from 93 inpatients following transfemoral cerebral angiography, from April 20 to September 23, 2016. Patients were grouped according to bed angle ($0^{\circ}$ vs. $30^{\circ}$) and bed rest time combined with hemostatic methods (4-hour bed rest after manual compression vs. 2-hour bed rest after applying vascular closure device). Results: There was a significant group differences on discomfort (F=46.44, p<.001). The post-hoc analysis showed the lowest score of discomfort in those with bed angle $30^{\circ}$ and 2-hour bed rest. There was no difference in hemorrhagic complications among 4 groups. Conclusion: The postangiograpy discomfort can be effectively reduced with the least hemorrhagic complications by bed angle $30^{\circ}$ elevation and 2-hour bed rest after applying vascular closure device for those underwent transfemoral cerebral angiography.

• Korean Journal of Materials Research
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• v.7 no.5
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• pp.423-430
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• 1997

졸-겔 dip coating법에 의해 제조한 바륨페라이트 박막의 미세구조와 결정학적인 구조 특성에 관해 조사하였다. 기판에 형성된 바륨페라이트 입자는 침상 형태의 입자들로 구성되어 있었으며, C축은 장축 방향이었고, 막 두께가 증가함에 따라 침상형 입자들은 기판에 평행하게 배향하는 경향을 나타내었다. 박막은 바륨페라이트층, Ba, Fe, SiO$_{2}$로 구성되어 있는 중간층, 그리고 기판층인 SiO$_{2}$층으로 구성되어 있었으며, 중간층과 SiO$_{2}$층간의 계면은 Ba 와 SiO$_{2}$간의 화합물로 구성되어 있었다. 침상 형태의 입자는 95$0^{\circ}C$에서 3시간 열처리하므로써 완전히 소실하였고, 130$0^{\circ}C$에서 3시간 열처리하므로써 c면이 기판에 평행하게 위치하는 완전한 육각판상 형태의 입자로 변화되었다.

• Cement
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• s.137
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• pp.9-12
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• 1994

• Cement
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• s.133
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• pp.18-21
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• 1993