• 성인간호학회지
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• 제14권2호
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• pp.213-221
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• 2002

Purpose: The aim of this study was to investigate the difference of in the level of pain, depression, and quality of life by coping strategy in the chronic arthritis patients. Method: These data were collected by means of a self-reported questionnaire from 90 chronic arthritis patients undergoing treatment at a university hospital in Daegu city from June 10, 2000 to July 15, 2000. The instruments of study were coping strategy scale by Jeon(1985), pain scale by Lee and Song(1987), depression scale by Radloff(1977) and quality of life scale by Cho(1987). Data analysis was done by SPSS Win 10.0 program and Pearson correlation, t-test, Cronbach's-${\alpha}$ were used. Result: The results of this study were as follows: 1. The item mean score of pain for chronic arthritis patient was 6.54. The item mean score of depression for chronic arthritis patient was 2.18. The item mean score of quality of life for chronic arthritis patient was 5.69. 2. The chronic arthritis patients with problem-focused coping experienced pain higher than those with emotion-focused coping(t=o.400, p=o.o45). The chronic arthritis patients with emotion-focused coping experienced depression higher than those with problem-focused coping(t=-2.564, p=0.012). The chronic arthritis patients with problem-focused coping experienced quality of life higher than emotion-focused coping(t=-1.682, p=0.046). Conclusion: In conclusion this study showed that any coping strategy can control the arthritis patient's problem. Therfore, The development of a coping strategy to reduce pain and depression and improve the quality of life in the chronic arthritis patient will be needed.

• 한국항공우주학회지
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• 제33권3호
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• pp.93-98
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• 2005

과학기술위성2호는 2007년 12월에 발사될 예정이다. 이 위성의 주관측기는 DREAM으로서, 주요 임무는 지구 또는 대기로부터 발생되는 복사에너지를 라디오파 대역에서 관측하는 것이다. 이 외 과학기술위성2호는 과학기술 실험용기기로서 정밀디지탈 태양센서, 2중헤드 별센서 등이 탑재되며, 과학기술위성2호의 자세제어 및 모멘텀 덤핑용 과학기술실험용 탑재체로서 펄스형 플라즈마 추력기가 실린다. 본 논문에서는 관측기기 및 과학기술실험용 탑재체 등의 운용모드를 고려한 과학기술위성2호의 운용모드에 따른 전력의 수요예측에 대하여 연구하였고, 임무를 수행하는 동안 안정적인 전력을 공급하기위한 필요전력에 대하여 분석하였다.

• The Plant Pathology Journal
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• 제31권3호
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• pp.219-225
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• 2015

The primary step for efficient control of viral diseases is the development of simple, rapid, and sensitive virus detection. Reverse transcription loop-mediated isothermal amplification (RT-LAMP) has been used to detect viral RNA molecules because of its simplicity and high sensitivity for a number of viruses. RT-LAMP for the detection of Potato virus X (PVX) was developed and compared with conventional reverse transcription polymerase chain reaction (RT-PCR) to demonstrate its advantages over RT-PCR. RT-LAMP reactions were conducted with or without a set of loop primers since one out of six primers showed PVX specificity. Based on real-time monitoring, RT-LAMP detected PVX around 30 min, compared to 120 min for RT-PCR. By adding a fluorescent reagent during the reaction, the extra step of visualization by gel electrophoresis was not necessary. RT-LAMP was conducted using simple inexpensive instruments and a regular incubator to evaluate whether RNA could be amplified at a constant temperature instead of using an expensive thermal cycler. This study shows the potential of RT-LAMP for the diagnosis of viral diseases and PVX epidemiology because of its simplicity and rapidness compared to RT-PCR.

• 전기학회논문지
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• 제60권6호
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• pp.1215-1224
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• 2011

Recently, a lot of research for the smart grid technology have been carried out to achieve energy efficiency for the electronic products. In order to practically apply this study, smart instruments which are capable of the AMI (Advanced Metering Infrastructure) and DR (Demand Response) function are necessary. However, it is difficult to apply the function of the smart grid to the electronic product that cannot support the smart grid. Accordingly, the efficient use of electric energy is impossible. In order to solve this problem, the electronic product has to be changed into the exclusive electronic product supporting smart grid technology or the smart controller has to be attached the outside of the device. In this study, we developed the smart controller for connecting the electric appliances to the smart grid system. It can be attached to the illumination and the smart grid-based lamp control system at home. We additionally designed the message frame and the protocol to operate the smart controller with the AMI based EMS (Energy Management Server). We developed an experimental system to practically verify functions of the smart controller which is attached to the lighting device. From the system, we showed that the electric source of the illumination can be controlled according to the load change and saved energy effectively. We also confirmed the structural benefit and the energy-efficient effect through the verification of the smart controller.

• 대한의용생체공학회:의공학회지
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• 제28권4호
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• pp.494-502
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• 2007

Ubiquitous location based services (u-LBS) will be interested to an important services. They can easily recognize object position at anytime, anywhere. At present, many researchers are making a study of the position recognition and tracking. This paper consists of postion recognition and user identification system. The position recognition is based on location under services (LBS) using a signal strength map, a database is previously made use of empirical measured received signal strength indicator (RSSI). The user identification system automatically controls instruments which is located in home. Moreover users are able to measures body signal freely. We implemented the multi-hop routing method using the Star-Mesh networks. Also, we use the sensor devices which are satisfied with the IEEE 802.15.4 specification. The used devices are the Nano-24 modules in Octacomm Co. Ltd. A RSSI is very important factor in position recognition analysis. It makes use of the way that decides position recognition and user identification in narrow indoor space. In experiments, we can analyze properties of the RSSI, draw the parameter about position recognition. The experimental result is that RSSI value is attenuated according to increasing distances. It also derives property of the radio frequency (RF) signal. Moreover, we express the monitoring program using the Microsoft C#. Finally, the proposed methods are expected to protect a sudden death and an accident in home.

• 한국항행학회논문지
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• 제13권1호
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• pp.79-86
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• 2009

원격계측기술의 발달에 따라 실내 및 실외의 환경에 대한 날씨, 온도 등을 센서를 통하여 모니터링이 가능할 뿐만 아니라 신체의 생화학적 상태를 모니터링 할 수 있다. 센서로부터 측정된 데이터는 제어실로 무선 공중 데이터 망을 통하여 전송될 수 있다. 본 논문에서는 다양한 형태의 여러 센서 데이터를 측정하여 이를 한 시스템에 원격으로 전송하여 처리를 한다. 측정되는 센서의 데이터는 시설물, 장비 등의 동특성 및 정특성에 따라 제어도 가능하도록 구현하였다. 본 논문에서 구현한 시스템은 유선 및 무선을 통한 데이터 수집으로 여러 분야에 적용할 수 있으며 가정이나 사무실 등의 장소에 구애없이 공중망이 제공되는 어느 곳에서 데이터의 수집 및 제어가 가능한 시스템을 구성하였다.

• 대기
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• 제23권4호
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• pp.453-470
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• 2013

As a part of the KIAPS Observation Processing System (KOPS), we have developed the modules of satellite radiance data pre-processing and quality control, which include observation operators to interpolate model state variables into radiances in observation space. AMSU-A (Advanced Microwave Sounding Unit-A) level-1d radiance data have been extracted using the BUFR (Binary Universal Form for the Representation of meteorological data) decoder and a first guess has been calculated with RTTOV (Radiative Transfer for TIROS Operational Vertical Sounder) version 10.2. For initial quality checks, the pixels contaminated by large amounts of cloud liquid water, heavy precipitation, and sea ice have been removed. Channels for assimilation, rejection, or monitoring have been respectively selected for different surface types since the errors from the skin temperature are caused by inaccurate surface emissivity. Correcting the bias caused by errors in the instruments and radiative transfer model is crucial in radiance data pre-processing. We have developed bias correction modules in two steps based on 30-day innovation statistics (observed radiance minus background; O-B). The scan bias correction has been calculated individually for each channel, satellite, and scan position. Then a multiple linear regression of the scan-bias-corrected innovations with several predictors has been employed to correct the airmass bias.

• 한국간호교육학회지
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• 제22권2호
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• pp.152-162
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• 2016

Purpose: The purpose of this study was to investigate the influencing factors on externalized and internalized problem behaviors among high school students. Methods: The subjects for this study were 707 students in two high schools in K province. The data were collected during the period from October to November, 2014 by use of questionnaires. The instruments used were the Korean Youth Self-report, Daily Hassles Questionnaire, State-Trait Anger Expression Inventory, and Ego Resiliency Scale. The data were analyzed using SPSS. Results: Significant predictors to explain externalized problem behaviors comprised anger-out, anger-in, anger-control, relation with parents, daily stress, and religion. It was found that these factors explained 46% of externalized problem behavior. Ego resiliency, anger-in, daily stress, gender, relation with parent, and anger-out were significant predictors to explain internalized problem behaviors. It was found that these factors explained 45% of internalized problem behaviors. Conclusion: This study suggests that the influencing factors on problem behaviors differ from externalized and internalized problem behaviors. So these findings will provide the basic data to develop a program that is differentiated by problem behavior type.

• 대한간호학회지
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• 제32권4호
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• pp.560-569
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• 2002

The purpose of this study was to develop an instrument to measure family resilience for Korean families with a chronically ill child, and to test the validity and reliability of the instrument. Method: The items of instruments used based on the researchers' previous study of concept analysis of Korean family resilience. Nineteen item scales were developed with five domains. In order to test reliability and validity of the scale, data were collected from 231 families, who had a child with a chronic illness. Data was collected between August and September of 2001 in a 3rd level University Hospital in Seoul, Korea. Result: The results were as follows: As a result of the item analysis, 19 items were selected from the total of 37 items, excluding items with low correlation with the total scale. Five factors were evolved by factor analysis, which explained 56.4% of the total variance. The first factor 'Family strength' explained 28.5%, 2nd factor 'Family maturity' 8.7%, 3rd factor 'The ability to use of external resources' 7.0%, 4th factor 'Control' 6.6%, 5th factor 'The driving force for finance' 5.7%. The attributes in these factors were different with those identified by concept analysis of the family resilience in Korean families from the previous study. Cronbach's $\alpha$ coefficient of this scale was .8039 and Guttman spilt- half coefficient was .8184. Conclusion: The study support the reliability and validity of the scale. Because the main concept of family resilience was family strength, there were distinct differences in dimensions of family functioning scales.

• 한국수소및신에너지학회논문집
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• 제34권5호
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• pp.456-464
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• 2023

In this study, a compact hydrogen liquefaction system was constructed with the aim of creating a data storage and monitoring program for liquid hydrogen production. This program was designed to receive and record signals from diverse control equipment through the LabVIEW software. A range of measurement instruments were devised to collect data, encompassing variables such as flow rate, pressure, temperature, and liquid level. As a result, it was possible to directly check the production of liquid hydrogen by obtaining various data of condensed liquid hydrogen. In addition, it was confirmed that long-term storage of liquid hydrogen is possible by developing automatic ON/OFF through the LabVIEW program.