• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 추계종합학술대회 논문집
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• pp.1113-1116
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• 1999

In this papers, we proposes a efficient compression method of an image using the extraction of boundary region of DCT in MPEG-1. DCT coefficients have from low frequency to high frequency various components. After performing DCT to an image, the data is compressed to contain the boundary Region by quantization, and the information of boundary Region can be extracted by inverse DCT. In those, I chose frequency components susceptible to the boundary through the many experiences. In this paper, boundary can be selected by dividing low frequency by big quantization coefficient and dividing high frequency by small quantization coefficient without degrading visual qualify in MPEG-1. Also it is predicted that to reduce high frequency value will be good in noisy environments.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 컴퓨터소사이어티 추계학술대회논문집
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• pp.31-34
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• 2003

In this paper, we propose an application of data hiding, especially for content adaptation, where one can reduce computational time and get better transcoding results or qualify. Hiding some useful information for content adaptation can help resource tailor to do effective transcoding so that one can achieve lower complexity as well as better quality in content adaptation. Experimental results show that the proposed method based on data hiding gives effectiveness to content adaptation with reasonable subjective quality.

• Journal of the korean society of oceanography
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• 제39권2호
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• pp.148-154
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• 2004

This study describes the realtime monitoring system for water quality conditions in coastal waters. Some issues on the data qualify control and quality analysis are examined along with examples of erroneous data. Three different cases of database produced by the realtime monitoring system are presented and analyzed, namely 1) hypoxic condition, 2) over-saturated D.O. and 3) short-term variability of temperature and D.O. In utilizing the realtime database, D.O. prediction and warning models are developed based on autoregressive stochastic process. The model is very simple, yet, users in various levels from powerful and useful with its ability to send warning messages to users in varous levels from governmental administrative staff to local fisherman, and give them some allowances to cope with the situation.

• 대한안전경영과학회지
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• 제3권4호
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• pp.181-191
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• 2001

Integrated Supply Chain Management is a important subject for all enterprise activities as include logistics/sales, transfer and storage, manufacturing, purchasing of materials. A recent customer wants to receive high level service of all parts as Qualify, Delivery, Cost and Product. Therefore, Enterprise effort to supply for customers needs use some techniques like Data Mining, POS, MIS. Inventory and Logistics cost is the highest expense of all cost from first supplier to final customer on supply routine. So, SCM's basic purpose is reduce to that cost. So that this paper explain necessary, background, concept of SCM, analyze several using methodology and function of main SCM solution, after propose to ATP model include arithmetic procedure, functions, input data for determines available due date.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.172-174
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• 2007

An electronic watt-hour meter with high-precision measurement technology can provide many valuable metering data of a real-time system measurements, such as per-phase voltage, ampere, active power, reactive power, apparent power, power factor, and system frequency. Also many of accumulated metering data such as active energy, reactive energy, apparent energy, and load profile can be gettable from an electronic watt-hour meter[1]. This paper presents an approach of the small-sized AMR (Automatic Meter Reading) that provides customers with a very valuable electrical service. This AMR service transmits lots of a valuable metering data by using ZigBee communication module, so that users resided in their premises can use the information to audit a power quality and improve their electrical conditions by using the PQ monitoring device equipped with ZigBee receiver. This PQ monitoring device shows metering data on LCD and transmits to the PC through an internal network. Also, the device can keep the valuable meter data into a built-in non-volatile memory. The final goal of this paper is to better understand the power quality of electrical systems and offer the power qualify information for the convenience of all power consumers.

• 한국컴퓨터정보학회논문지
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• 제12권2호
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• pp.189-196
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• 2007

본 논문에서는 AODV(Ad hoc On demand Distance Vector)에 근간을 두고 QoS(Qualify of Service)를 지원하는 이동 애드 혹 라우팅 프로토콜을 제안했고 시뮬레이션을 통하여 성능을 평가했다. 각 노드에서 사용 가능한 통신 자원을 미리 고려하여 QoS 지원에 적합한 최단 경로를 설정함으로써 자원 소비를 줄일 수 있다. 성능 평가를 위해, 노드들의 이동성과 최선형 및 QoS 지원형 서비스 흐름의 수를 고려하여 평균 데이터 수신율을 분석했다. 이동 애드 혹 네트워크에서 특정 흐름들에 대한 QoS 지원형 서비스는 QoS 지원형 흐름들의 평균 데이터 수신율을 증가시켰다.

• 대한교통학회지
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• 제25권1호
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• pp.81-91
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• 2007

오늘날 기업 경영에 있어서 경쟁력 있는 글로벌한 공급사슬의 형성을 중요하게 간주되고 있다. 특히, 물류 및 운송부문에 있어서 서비스를 매우 중요한 가치 영역으로 보고 있다. 더욱이 동북아 허브 공항이 되기 위한 치열한 경쟁 속에서 인천국제공항 여객터미널의 서비스품질은 매우 중요한 영역이다. 본 연구는 인천국제공항의 여객터미널 서비스품질 측정 요인 및 항목을 선정하고 이용자 및 서비스 제공자간의 인식의 차이를 측정하며 서비스품질에 영향을 미치는 요인들을 확인한 후, 선호투표에 의한 자료포락분석을 통해 서비스품질을 향상시킬 수 있는 선호 요인과 항목을 찾아내었다. 연구 분석 결과 첫째, 인천국제공항 여객터미널의 서비스품질에 대한 요인은 신뢰성, 반응성 보증성, 공감성, 교통운영 편의시설, 출입국 심사, 환경적 요인 등 8가지 요인. 33개의 항목이 선정되었다. 여객터미널 이용자 및 서비스 제공자간의 서비스품질 측정 결과, 총 33개 항목 중에서 공항이용객과 IIAC 직원들 간에는 29개의 항목, 공항이용객과 항공사 직원들 간에는 7개의 항목, 항공사 직원들과 IIAC 직원들 간에는 31개의 항목에서 서비스 이용자 및 서비스 제공자간에 인식의 차이가 있는 것으로 나타났다. 둘째, 여객터미널 서비스품질 상업시설 서비스, 여객터미널 접근의 편리성, 항공사의 서비스품질, IIAC의 지역사회 공헌 등은 인천국제공항 서비스품질 전체 만족도에 영향을 미치는 통계적으로 유의한 결과를 밝혀냈다.

• 근관절건강학회지
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• 제7권2호
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• pp.281-293
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• 2000

This study was conducted to identify the relationships among self-care agency, family support, qualify of life in patients with rheumatoid arthritis. The subjects were 120 rheumatoid arthritis patients who attended RA O.P.D. at a university hospital, located in Daegu city, from 10th of May in 1998 to 30th of July in 1998. Three structure questionnaires were administered for explore three main research variables; 소향숙's self-care agency scale, 강현숙's family support scale, and 김종임's quality of life scale of RA patien. Data analysis was conducted with SPSS program including percentage, mean, standard deviation, mean score, Pearson Correlation Coefficient, multiple regression, and Cronbach's Alpha. Results are summarized as follows; 1. The mean of RA patient's self-care agency was 136.62, the mean of family support 37.38, and the mean of qualify of life 134.41. 2. Subject's self-care agency was positively correlated with family support(r=.2446) and with quality of life(r=.4341). Subject's family support was positively correlated with quality of life(r=.2630). 3. Stepwise multiple regression was used to determine the predictors of subject's quality of life. Significant predictors for subject's quality of life were self-care agency(t=4.873 p=0.0000), family support(t=4.480 p=0.0000) and the severity of arthralgia(t=-3.838, p=0.0002). The number of joints involved and the periods of illness did not show significant contribution to subject's quality of life. Self-care agency, family support, and family support explained 40. 39% of the variance in RA patient's quality of life. Given this results, it is suggested that a repeated study to measure RA patient's self-care practice in their own life may be needed to develope and validate an optimum level of nursing intervention for RA patient with which family support will be encouraged and patient's self-care agency will be facilitated.

• 한국동물위생학회지
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• 제28권3호
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• pp.225-234
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• 2005

Egg has been considered as one of the most important food sources in both nutritionally and economically. However, because the hazards of egg flow chains' complexity from producers to consumers and the insufficiency of cold chain systems in Korea are still remained, preventive measures for egg safety should be established. This experiment was carried out to investigate the changes of egg qualify during storage in order to find out the proper storage condition and eggshell treatment. Eggs were stored at cold condition $(5^{\circ}C,\;relative\;humidity;\;RH:\;65\pm3\%)$ and room Condition $(1st: Sep\; 6\~Nov\; 15,\;2001,\; 10\~30^{\circ}C,\;RH\;41\~86\%,\;2nd;\; Dec\;13,\;2001\~Feb\;21,\;2002,\;4\~23^{\circ}C,\;RH\;36\~89\%)$ after eggshell treatment (unwashed, washed and coated egg) during'10 weeks and examined weight loss and interior quality periodically. Weight loss was in decreasing order room washed > room unwashed > cold washed > cold unwashed > room coated > cold coated egg. And, Haugh unit was decreasing order room washed > room unwashed > room coated > cold washed > cold unwashed > cold coated egg. Our findings show that both coated eggs and refrigeration reduces the rate of decline in Haugh units and egg weight. And, washed eggs had lower average Haugh units and a higher weight loss than any of the eggshell treatment in both storage conditions. Conclusively, for washing eggshell, 150 ppm of sodium hypochlorite, regular exchange and temperature control of water should be consistent and also eggs should be dried immediately after washing. Also, national guidelines for temperature and moisture of storage places, transportation and expiration data should be established to keep quality and weight loss of eggs. Storage temperature that is a critical factor in the quality and safety of eggs should be kept under 12'c and labelling of expiration date should be obligatory.

• 대한간호학회지
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• 제37권5호
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• pp.744-753
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• 2007

Purpose: The effects of telephone intervention on self-care practices and quality of life for gynecological cancer patients under chemotherapy was investigated. Methods: A non-equivalent control group pre-test post-test quasi-experimental design was used. The subjects were women cancer patients who had received less than two chemotherapy sessions at C university hospital of Chonnam province(26 in the experimental group: 25 in the control group). The patient's self-care practices(Na & Lee, 1999; Jang, 2004) and quality of life(Lee & Jo, 1997) were measured three times. using a questionnaire. The data was analyzed by Repeated Measures ANOVA, the Friedman test, and the Mann-Whitney test using the SPSS window version 12.0 program. Results: This study showed that the score of self-care practices and quality of life for the experimental group under telephone counseling were higher than those of the control group. Conclusion: This study revealed that a telephone intervention as supportive nursing care for women cancer patients under going chemotherapy was effective for self-care practices and qualify of life during the recovery period. Futhermore, this study also suggests that telephone counseling can serve as a continuing nursing supportive intervention for women cancer patients for the upcoming stages of further chemotherapy.