• Journal of Korea Multimedia Society
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• v.9 no.1
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• pp.11-22
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• 2006

Recently face detection has actively been researched due to its wide range of applications, such as personal identification and security systems. In this paper, a new face detection method based on the distribution map is proposed. Face-like regions are first extracted by applying the skin color map with the frequency to a color image and then, possible eye regions are determined by using the pupil color distribution map within the face-like regions. This enables the reduction of space for finding facial features. Eye candidates are detected by means of a template matching method using weighted window, which utilizes the correlation values of the luminance component and chrominance components as feature vectors. Finally, a cost function for mouth detection and location information between the facial features are applied to each pair of the eye candidates for face detection. Experimental results show that the proposed method can achieve a high performance.

• Journal of Korean Academy of Nursing
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• v.43 no.2
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• pp.194-202
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• 2013

Purpose: This study was done to develop and test a scale to measure the partnership between pediatric nurses and hospitalized children's parents. Methods: Instrument development process included construct identification based on concept analysis using the hybrid model of Shuwartz-Barcott and Kim (2000), a process which generated 42 initial items. This number was reduced to 35 items through content validity tests by 5 experts and face validity tests by 5 pediatric nurses and 5 parents of hospitalized children. The preliminary Pediatric Nurse Parent Partnership Scale (PNPPS) was administered to 186 pediatric nurses and 163 parents at eleven children's wards in four hospitals. Data were analyzed using item analysis, factor analysis, Pearson correlation coefficients, and Cronbach's alpha. Results: Thirty-four items were selected for the final scale. Seven factors evolved from the factor analysis, which explained 68.4% of the total variance. The internal consistency, Cronbach's alpha, was .96 and reliability of the subscales ranged from .66 to .93. Conclusion: The PNPPS demonstrated acceptable validity and reliability. It can be used to assess the partnership of pediatric nurses and parents in practice and research.

• Proceedings of the KSME Conference
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• 2003.11a
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• pp.658-663
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• 2003

A process of 3-D stereo particle image velocimetry(PIV)was developed for the measurement of an illuminated sliced section field of 3-D complex flows. The present method includes modeling of camera by a calibrator based on the homogeneous coordinate system, transformation of the oblique-angled image to the right-angled image, identification of 2-D velocity vectors by 2-D cross-correlation equation, stereo matching of 2-D velocity vectors of two cameras, accurate calculation of 3-D velocity vectors by homogeneous coordinate system, removal of error vectors by a statistical method followed by a continuity equation criteria, and finally 3-D display as the post processing. An experimental system was also used for the application of the proposed method. Two high speed digital CCD cameras and an Argon-Ion Laser for the illumination were adopted to clarify the time-dependent characteristics of the leading edge extension(LEX) in a highly swept shape applied to a delta wing found in modern air-fighters.

• The KIPS Transactions:PartD
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• v.13D no.2 s.105
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• pp.183-190
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• 2006

Database workloads may show different resource usages for database applications. Database administrators can enhance the DBMS performances through resource management that reflects workload characteristics. We provide a method that can identify tunable resources from analyzing the relationship between performance indicators and resources. First, we select which performance indicators increase or decrease by expanding resources using a correlation coefficient and a significance level test. Next, we identify resources that can affect the DBMS Performances by using increasing or decreasing performance indicators. We evaluated our method in the TPC-C and TPC-W environments.

• Journal of Microbiology and Biotechnology
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• v.17 no.4
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• pp.673-676
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• 2007

A two-step triplex PCR assay targeting the mecA, femA, and nuc genes was developed for the detection of methicillin resistance genes harbored by some Staphylococcus aureus isolates and for the simultaneous identification of such isolates at the species level. The triplex PCR revealed the presence of the femA and nuc genes in all the S. aureus isolates examined (n=105). Forty-four clinical isolates were mecA positive and no foodborne isolates were mecA positive. The PCR results had a 98 or 99% correlation with the results of PBP2a latex agglutination tests or oxacillin susceptibility tests, respectively.

• Journal of the Korean Society of Tobacco Science
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• v.7 no.2
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• pp.123-128
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• 1985

The incitant of soft rot on burley tobacco leaves in the curing vinylhouse was identified as Erwinia carotovra subsp. carotovora on the basis of its physiological characters. The bacterium yew best at $25^{\circ}C$ and $30^{\circ}C$, but no growth was detectable at $40^{\circ}C$ in the nutrient broth for 24 hours period. Burley tobacco leaves inoculated with the bacteria (Ecc) produced typical soft rot lesions when the incubation temperature was 25 to $30^{\circ}C$ and the relative humidity was more than 8075, however, the lesion development was suppressed when the temperature was $40^{\circ}C$ and the relative humidity was below 80%. Significant negative correlation was found between hanging space in the curing vinylhouse and the incidence of soft rot on the tobacco leaves harvested in a rainy day regardless of streptomycin treatment.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2003.04a
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• pp.63-66
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• 2003

This study applied a hydrogeological field survey and isotope investigation to identify source locations and delineate pathways of groundwater contamination by nitrogen compounds. The infiltration and recharge processes were analyzed with groundwater-level fluctuation data and oxygen-hydrogen stable isotope data. The groundwater flow pattern was investigated through groundwater flow modeling and spatial and temporal variation of oxygen isotope data. Based on the flow analysis and nitrogen isotope data, source types of nitrate contamination in groundwater are identified. Groundwater recharge largely occurs in spring and summer due to precipitation or irrigation water in rice fields. Based on oxygen isotope data and cross-correlation between precipitation and groundwater level changes, groundwater recharge was found to be mainly caused by irrigation in spring and by precipitation at other times. The groundwater flow velocity calculated by a time series of spatial correlations, 231 m/yr, is in good accordance with the linear velocity estimated from hydrogeologic data. Nitrate contamination sources are natural and fertilized soils as non-point sources, and septic and animal wastes as point sources. Seasonal loading and spatial distribution of nitrate sources are estimated by using oxygen and nitrogen isotopic data.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2005.11a
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• pp.101-104
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• 2005

본 논문에서는 국내에서 채택한 ATSC-DTV (Advanced Television System Committee-Digital Television)의 단일주파 수망 (SFN; Single Frequency Network) 구성을 위한 TxID (Transmitter Identification)용 ZCD (Zero Correlation Duration)확산코드 기반의 부분상관 정합필터를 새롭게 제안하였다. 본 논문에서 제안한 정합필터의 구현 알고리즘은 TxID에 있어서 기존의 정합필터 구조를 적용할 경우에 발생되는 소비전력 문제나 하드웨어 구현의 어려움을 획기적으로 해결할 수 있다는 잇점을 갖는다. 따라서 본 논문에서는 이러한 다양한 잇점을 갖는 새롭게 제안한 ZCD용 부분상관 정합필터를 FPGA (Field Programmable Gate Array)를 이용한 디지털 하드웨어로 구현하고 그 성능을 분석함으로써 유용성을 확인하였다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2005.11a
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• pp.105-108
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• 2005

본 논문에서는 지상파 디지털 방송시스템의 단일 주파수망 (SFN; Single Frequency Network) 구성을 위해 DTV (Digital Television) TxID (Transmitter Identification)용 저간섭 ZCD (Zero Correlation Duration) 확산코드를 제시하였다. ZCD 확산코드는 코드발생기의 구현이 용이함과 동시에 ZCD특성을 가짐으로 인해서, TxID에서 발생되는 인접코드 간섭 (ICI; Inter Code Interference) 및 다중경로 간섭 (MPI; Multi-Path Interference) 문제를 확산코딩기법을 이용하여 근원적으로 해결해주는 역할을 하고 있으며, 주기를 가변적으로 조절할 수 있어 TxID를 위한 워터마킹 (Watermarking)시에 발생하는 Truncated error를 제거할 수 있다. 본 논문에서는 AWGN (Additive White Gaussian Noise) 잡음 및 ICI, MPI와 같은 다양한 간섭환경을 모의실험에 반영하여 도출된 DER (Detection Error Rate)특성을 분석함으로써, TxID용 저간섭 ZCD 확산코드의 유용성을 입증하였다.

• The Journal of Korean Academic Society of Nursing Education
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• v.17 no.1
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• pp.120-128
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• 2011

Purpose: The purpose of this study was to test the validity and reliability of a life respect instrument for elementary school students. Method: The study was conducted as follows: identification of the tentative content domains, items generation, test of content validity, and data collecting with a preliminary questionnaire. Descriptive statistics, factor analysis, Cronbach's alpha, Guttman split-half, and Pearson correlation coefficients were used to analyze the data. Results: Two factors were extracted through factor analysis: 'Value about life respect', and 'Attitude about life respect.' These factors explained 58.82% of all factors. A total of 16 items belonging to 2 domains were generated. Cronbach's alpha and Guttman split-half coefficient were .82, and .84 respectively. Conclusion: The life respect instrument modified in this study will be useful for evaluating the effect of life respect education for elementary school students.