• 품질경영학회지
• /
• 제26권3호
• /
• pp.130-140
• /
• 1998

Studies present a guide to parameter estimation of software reliability models using SAS JMP. In this paper, we consider only software reliability growth model(SRGM), where mean value function has a S-shaped growth curve, such as Yamada et al. model, and ohba inflection model. Besides these stochastic SRGM, deterministic SRGM's, by fitting Logistic and Gompertz growth curve, have been widely used to estimate the error content of software systems. Introductions or guide lines of JMP are concerned. Estimation of parameters of Yamada et al. model and Logistic model is accomplished by using JMP. The differences between Yamada et al. model and Logistic model is accomplished by using JMP. The differences between Yamada et al. model and Logistic model is discussed, along with the variability in the estimates or error sum of squares. This paper have shown that JMP can be an effective tool I these research.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2003년도 춘계학술대회 논문집
• /
• pp.802-805
• /
• 2003

Structural surface becomes an antenna. The integration of antennas into structural body panels is a new high payoff technology. It emerged from the need to improve structural efficiency and antenna performance. In this paper, we developed new design concept for the structural surface which transmits and receives the electromagnetic signals, and it is termed Surface-Antenna-Structure (SAS). Design procedure was presented including structure design. material selection and design of antenna elements, which was processed according to the communication with KORSAT satellite at Ku-Band (12.25-12.75 GHz). The final demonstration article was 350$\times$200$\times$7.5mm flat antenna panel. Experimental results for antenna performances were in good agreements with design requirements. Also structural analysis was performed with SAS. estimating stress distributions under simply supported condition with Laminated Plate Theories and Wavier Solutions. The SAS concept can be extended to give a useful guide to manufacturers of structural body panels as well as antenna designers. promising innovative future communication technology.

• 디지털융복합연구
• /
• 제19권11호
• /
• pp.415-424
• /
• 2021

본 연구는 노년의 행복을 측정하기 위해 개발된 주관적 에이징웰 척도(Subjective Agingwell Scale: SAS)를 타당화하고자 하였다. 척도의 타당성을 검증하기 위해, 수도권에 거주하는 노인을 대상으로 주관적 에이징웰, 주관적 안녕감, 낙관주의, 지각된 통제력, 건강준수 행동을 측정하는 질문지를 실시하였다. 자료 분석에는 최종 342명의 응답결과가 사용되었다. 결과를 살펴보면, 첫째, 신뢰도 분석결과, 11문항의 SAS의 전체 및 하위 척도 신뢰도는 수용할만한 수준이었다. 둘째, 확인적 요인분석 및 상관분석 결과, SAS는 구성타당도가 있는 것으로 나타났다. 3요인(인지, 정서, 영) 구조의 적합도는 양호한 편이었고, 주관적 에이징웰과 주관적 안녕감, 낙관성은 정적 상관을 보였다. 마지막으로 회귀분석 결과, 주관적 에이징웰은 건강행동 준수를 예측하였고 준거타당도가 지지되었다. 본 연구는 주관적 관점의 에이징웰 측정도구를 국내 노인에게 적용할 수 있도록 타당화했다는 점에서 의미가 있다.

• Journal of the Korean Data and Information Science Society
• /
• 제19권2호
• /
• pp.487-496
• /
• 2008

Recently survival analysis becomes popular in a variety of fields so that a number of statistical packages are developed for analyzing the survival model. In this paper, several types of survival models are introduced and considered briefly. In addition, widely used three packages(SAS, SPSS, and STATA) for survival data are reviewed and their characteristics are investigated.

• 한국환경농학회지
• /
• 제20권5호
• /
• pp.352-357
• /
• 2001

Cadmium (Cd) has been identified as a potential contaminant in agricultural and environmental soils. Ionic condition in the soils is an important factor to influence Cd availability. In this study, the effect of sulfate or nitrate application on Cd sorption in acidic and calcareous soils was investigated. The Cd, sulfate $(SO_4)$, and nitrate $(NO_3)$ sources were solutions of $CdCl_2$, $K_2SO_4$, and $KNO_3$, respectively. The soil-solution system pH was affected by the application of sulfate or nitrate in both acidic and calcareous soil system, but there was not clear pH difference between pre- and simultaneous applications of sulfate or nitrate (PAS/PAN or SAS/SAN). Solution ionic strength (I) values were similar between the acid and calcareous soil systems after applying the Cd even though it was significantly different in the untreated control soils. However after applying the sulfate or nitrate, the I values increased and were always higher with SAS/SAN treatments. Solution Cd concentration also increased with the application of sulfate or nitrate. However, the Cd concentration in soil solution controlled by Cd sorption in the systems was different between PAS/PAN and SAS/SAN treatments only in the calcareous soil system, but not in the acidic soil system. The difference in Cd concentration between SAS/SAN and PAS/PAN in the calcareous systems may be caused by system pH, ionic strength, complexation, and predominately, competition of the $Cd^{2-}$ with the index $K^+$ ion. Potassium ion-Cd competition in the acidic soil system may be minimized because of the abundance of hydrogen ions.

• Communications for Statistical Applications and Methods
• /
• 제9권3호
• /
• pp.675-682
• /
• 2002

In this study, we develop the statistical analysis program for genetic analysis of diallel crosses data by SAS/MACRO, SAS/IML. Genetic analysis is to estimate of genetics parameters and heredity with reciprocal cross and without reciprocal cross. Statistical analysis program solve the problem of the difficulties on the data analysis in field denetics and breeding Therefore the user whoever want to analysis of data on genetics and breeding easily conduct the work saving time and suffering.

• Journal of the Korean Data and Information Science Society
• /
• 제18권2호
• /
• pp.561-572
• /
• 2007

In this paper, we describe various efficient optimization algorithms for obtaining an optimal customer allocation in the telephone call center. The main advantages of the proposed algorithms are simple, fast and very attractive for massive dataset. The proposed algorithms also provide comparable performance with the other more sophisticated linear programming methods. The proposed optimal allocation algorithms increase the customer contact, response rate and management product and optimize the performance of call centers. Simulation results are given to demonstrate the effectiveness of our algorithms.

• 한국콘텐츠학회:학술대회논문집
• /
• 한국콘텐츠학회 2017년도 춘계 종합학술대회 논문집
• /
• pp.103-104
• /
• 2017

목표: 제조업은 산업 재해가 가장 많이 발생하며, 산업 재해를 예방하기 위해 산업계 근로자가 알고 있는 안전 환경을 연구하는 것이 중요합니다. 방법: 2015년 PSWCI 패널 보고서에 응답한 근로자 중 연구 대상은 남성 1,123명이었다. 연구 대상은 영향을 받는 주관적인 건강을 겪은 후 1년 동안의 고용 상태의 변화에 따라 피험자를 분류하여 분석을 했다. 통계 분석은 SAS 버전 9.4 (SAS Institute Inc., Cary, NC, USA)를 사용하여 수행되었습니다. 결과: 분석 결과에 따르면 제조 산업은 근로자 조건에 따라 경제적 활동과 건강상태에 차이가 있었습니다. 제조업 환경의 역동적인 변화의 측면은 성별과 일시적인 상태와 실업 상태 사이에서 남성이 더 높은 경향을 보였다. 결론: 이 연구의 결과는 제조 업계 종업원들이 느끼는 작업 환경의 안전 수준을 향상시키기 위한 것이다.

• 생명과학회지
• /
• 제11권3호
• /
• pp.197-202
• /
• 2001

This study was conducted to investigate the effect of simulated acid solution(SAS) on acid buffering capacity, chlorophyll content and butrient leacking in 4 herb species(Petunia hybrida Vilm, Gomphrena globosa L. Celosia cristat L. Salvia officinallis L) . The acid buffering capacity in the leves was increased in the treatment of pH 3.0 in Celosia L., whereas it was increased at pH 4.0 in Petunia Petunia hybrida Vilm. and Gomprean globosa L.. But, the acid buffering capacity of the leaves did not work at ph 2.0 treatment in 4 herb species. With decreasing pH level, the chlorophyll content of Petunia hybrida Vilm. and Gomphrena globosa L. Was markedly decreased than that of Gelosia cristata L. and Savia officinalis L. As the pH levels decreased from 5.6 to 2.0 the nutrient leaching from leaves was significantly increased in 4 herb species. In pH 4.0 and 5.6, the concentrations of nutrient leaching from leaves were higher in Perunia hybrida Vilm. and Gomphrean globosa L. than Gelosia cristata L. and Salvia officinalis L., Based on the results, there was a great differences in response to SAS among the 4 herb species. Im general, Gelosia cristata L. and Salvia officinalis L. represented a higher tolerance to SAS Petunia hybrida Vilm, and Gomphrena globosa L..

• 공업화학
• /
• 제19권1호
• /
• pp.37-44
• /
• 2008

저렴한 비용으로 도전성 투명 필름을 제조하기 위해 PET 필름 위에 습식 도포법으로 ITO/ATO 막을 적층시켰다. 압력 15 MPa, 온도 $50^{\circ}C$의 SAS 합성 조건으로 ITO를 합성하였으며 ITO의 최적 조성비(In/Sn)는 65, 합성된 ITO의 평균입경은 $15{\pm}2nm$, 표면저항 값은 $4{\times}10^4{\Omega}{\cdot}cm$였다. 도포액은 pH 10에서 제조하였으며 ATO 막의 표면조도(Ra), 표면저항 값, 빛투과율은 각각 9 nm, $5.5{\times}10^6{\Omega}{\cdot}cm$, 91%였다. 일차 도포된 ATO 막 위에 0.1, 0.5, 1.0, 2.0 ITO wt% 첨가한 도포액으로 ITO 막을 적층 제조하였으며, ITO/ATO 적층 필름의 표면조도는 4, 10, 12, 16 nm이였으며 표면저항 값은 각각 $3.7{\times}10^6$, $2.4{\times}10^6$, $8{\times}10^5$, $2{\times}10^5{\Omega}{\cdot}cm$로 측정되었다. 적층 필름의 빛투과율은 각각 89, 88, 86, 82%이였으며 ITO 농도가 높아질수록 빛투과율은 낮아졌다.