• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1990년도 봄 학술발표회 논문집
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• pp.16-19
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• 1990

The effect of superplasticizers on the fluidity performance in fresh concrete and physical properties in hardened concrete have been analyzed and investigated under mix proportions of water cement ratio of 0.4, 0.6, crushed stone aggregates, and addition rates of superplasticizers of 0.0, 0.5, 1.0 and 1.5 in the practical range. It is the aim of this study to provide the fundamental data on the workability improvement and engineering properties of crushed stone concrete using superplasticizers comparing with conventional concrete for the practical use and research data accumulation of superplastized concrete.

• 한국가정과교육학회지
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• 제13권1호
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• pp.93-106
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• 2001

The purpose of this research is to study the performance assessment made by high school home economics teachers : their awareness and attitudes toward the assessment correlate with the qualitative output of the executions of it. as well s to determine how their awareness and attitudes toward the assesment correlate with the qualitative output of the executions of their performance assessments. The research has yielded the following results : 1. The attitudinal score shows above average of 58.7/90. By the sub-factors. awareness of the characteristics of performance assessment is 20.6/30 : the favorable attitudinal score is at 20.0/30. the behavioral attention at 9.5/15. and the effects of performance assessment on the teachers and the classes at 8.6/15. 2. In a single semester. the highest frequency of executing performance assessment is between 1 to 2 times (58.7%). and practical skill test is proven to be the most frequently used category at 79.9%. 3. The correlation between the overall attitude on performance assessment and the quality of actual performance assessment executed is high. indicating superior quality of performance assessment. which is directly proportionate to the enhanced attitude of teachers on performance assessment.

• 한국IT서비스학회지
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• 제6권1호
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• pp.101-126
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• 2007

This study aims to construct the integrative performance evaluation model of informatization programs. In order to achieve the purpose of research, first of all, the three major theoretical paradigms (technical/functional, economic/financial, and interpretive/alternative paradigms) are comparatively analyzed concerning their philosophical and methodological perspectives. Also, a number of important studies and research model in the area of IS (Information Systems) evaluation are critically reviewed. And then actual problems and limitations on the process of implementing IS performance evaluation are sought through investigating domestic and foreign practices. Based upon theoretical and practical review of informatization evaluation and logical reasoning, the components of ideal performance evaluation scheme for informatization program are derived, and the integrative performance evaluation model which can comprehensively represent the relationship among the components is conceptually proposed. For researchers, this study provides the theoretical basis for reasonably deriving the performance variables of informatization programs and empirically validating the performance of managing informatization programs. And in real world, the results of this study are very likely to contribute to presenting the practical guideline for desirably implementing performance evaluation of informatization programs.

• 산학경영연구
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• 제18권2호
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• pp.83-110
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• 2005

최근 공공부문에서 성과관리의 필요성이 강조되고 있다. 그 방법론 중 하나로 제안되고 있는 것이 균형성과표(BSC)에 의한 성과관리이다. BSC는 재무적 측면 뿐만 아니라 조직의 내부 프로세스와 구성원 역량, 그리고 고객의 관점 등에서 성과관리를 할 것을 제안하고 있다. 그동안 공공부문은 민간부문과 비교하여 성과측정 및 관리를 소홀히 해 왔던 것이 사실이다. 그 이유는 민간부문처럼 경쟁의 심화 및 지속적인 수익창출을 위한 성과주의 조직관리의 필요성이 공공부문에서는 제기되지 않았기 때문이다. 그러나 공공성 뿐만 아니라 효율성과 지속적인 혁신이 중요한 가치가 됨에 따라 성과지표의 선정 및 관리에 따른 성과향상이 중요해지기에 이르렀다. 본 연구는 공공부문에서 성과관리의 일환으로 제기되고 있는 BSC의 타당성을 검토하고 BSC의 도입이 공공부문의 인사관리에 어떠한 영향을 미치는지를 살펴보고자 한다. 나아가 공공부문의 바람직한 인사관리 방향성에 대하여 제안하고자 한다.

• 한국통신학회논문지
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• 제21권1호
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• pp.119-130
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• 1996

This paper is the part I of the full study about improved structure of fully interconnected ATM switch to develop the small sized switch element and practical implemention of switch network. This part I paper describes about proposed switch structure, performance evaluations and some of considerations to practical implementation. The proposed structure is constructed of two step buffering scheme in a filtered multiplexer. First step buffering is carried out by small sized dedicated buffers located at each input port. And second step buffering is provided by a large sized common buffer at the output port. To control bursty traffic, we use speed up factor in multiplexing and priority polling according to the levels of buffer occupancy. Proposed structure was evaluated by computer simulation with two evaluation points. One is comparision of multiplexing discipline between hub polling and priority polling. The ogher is overall which should be considered to improve the practical implementation.

• 한국가정과교육학회지
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• 제23권1호
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• pp.159-176
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• 2011

본 연구의 목적은 중학교 가정과교사들의 실천적 문제 중심 수업에 대한 인식과 실태, 실천적 문제 중심 수업 실행의 활성화 방안을 알아보는 데 있다. 이러한 연구의 목적을 달성하기 위해 전국에서 중학교에서 가정교과를 가르친 경험이 있는 교사 150명의 설문지 응답과 중학교 가정과교사 6인을 대상으로 한 면담 내용을 분석하였으며, SPSS/Win(Ver 10.1) 프로그램을 이용하여 빈도, 백분율, 평균, 표준편차, ANOVA, T-test, 상관관계를 산출하였다. 첫째, 중학교 가정과교사는 가정교과의 목적에 대해서 대부분이 실천적 문제 해결 능력을 키우는 것으로 응답하였다. 대부분의 가정과교사가 실천적 문제 중심 수업이 필요하다고 인식하고 있으나 실행 정도는 낮았으며 실천적 문제 중심 수업의 필요성 인식과 실행 정도에 상관관계가 없어서 가정과교사의 실천적 문제 중심 수업에 대한 인식과 실행의 부조화가 있음을 알 수 있다. 둘째, 교사의 특성에 따른 실천적 문제 중심 수업의 필요성 인식과 실행 정도를 알아본 결과, 교사의 특성에 따라 실천적 문제 중심 수업의 필요성 인식이 유의하게 차이나지 않았으며, 실천적 문제 중심 수업의 실행 정도의 경우 교사의 교직경력, 발령교과에 따라 다르게 나타났다. 직업 만족도에 대하여 실천적 문제 중심 수업의 필요성 인식과 실행 정도가 정적으로 유의한 상관관계가 있었으며 실천적 수업의 필요성 인식보다 실행 정도와의 상관관계가 더 컸다. 이로서 실천적 문제 중심 수업은 선행연구에서 밝힌 학생을 대상으로 한 효과검증 뿐 아니라 교사의 직업만족에도 관련이 있는 것을 알 수 있다. 셋째, 동료교사와 자료 및 정보공유가 실천적 문제 중심 수업 실행을 촉진하는 요인이며, 수업시수나 시간 부족과 실천적 문제 중심 수업에 대한 이해 부족이 실천적 문제 중심 수업 실행을 저해하는 요인으로 나타났다. 실천적 문제 중심 수업 실행을 활성화하기 위한 방안으로 관련 교수 학습 과정안과 같은 학습 자료의 지원에 대한 요구가 높았으며, 수업시수의 확보, 이 수업의 밑바탕에 깔린 가정교과철학관련 연수, 이 수업을 이해하고 실천할 수 있게 하는 장기간의 교사 연수를 필요로 했다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집D
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• pp.961-966
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• 2001

The Wells turbine is one of the simplest and most promising self-rectifying air turbines which are useful for the systems of alternative energy development in near future, and it is economically desirable from the point of view of the practical use, as well. To investigate the effect of blade sweep on the performance of the Wells turbine, computations of a fully 3-D Navier-Stokes are carried out under steady flow conditions of NACA0020 blade. It is known that the performance of the Wells turbine is considerably influenced by the blade sweep. An optimum blade sweep ratio(f=0.35) for the NACA0020 is found to be the most promising for the practical use, and this value is in good agreement with the previous experiments. It is also found that the overall turbine performance for the NACA0020 is better than that for the CA9.

• 국제초고층학회논문집
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• 제10권2호
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• pp.85-92
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• 2021

Dynamic vibration absorbers (DVAs) in the form of tuned sloshing dampers (TSDs) and tuned mass dampers (TMDs) are commonly used to reduce the wind-induced motion of high-rise buildings. Full-scale performance of structure-DVA systems must be evaluated during the DVA commissioning process using structural monitoring data. While the random decrement technique (RDT) is sometimes employed to evaluate the DVA performance, it is shown to have no theoretical justification for application to structure-DVA systems, and to produce erroneous results. Subsequently, several practical methods with a sound theoretical basis are presented and illustrated using simulated and real-world data. By monitoring the responses of the structure and DVA simultaneously, it is possible to directly measure the effective damping of the system or perform system identification from which the DVA performance can be evaluated.

• 운동영양학회지
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• 제23권2호
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• pp.13-15
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• 2019

[Purpose] Functional beverages are a protective or enhancing factor influencing not only public health but also athletic performance. The purpose of this study was to highlight the new conditioning beverage of the Lactobacillus pentosus strain b240 (B240) with electrolytes or proteins, which strengthens immune functions to improve the quality of life. [Methods] ISeveral related studies systematically reviews three main issues associated with conditioning beverages: (a) utilization and availability of the functional beverage; (b) significance of B240 in immune strengthening; and (c) availability and application of conditioning drinks in the daily life and sports field. [Results] Intake of B240 led to greater enhancements, including blood T-helper, NK cell, IgA and IgG level in conjunction with strengthen immune functions. These results speculated that the practical application of B240 contained beverages on physiological health and performance. [Conclusion] BODYMAINTÉ, this novel conditioning beverage is expected biological utility responsible for improved sports performance as a functional drink and has potential health-related implications.

• 한국산업경영시스템학회:학술대회논문집
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• 한국산업경영시스템학회 2002년도 춘계학술대회
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• pp.91-98
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• 2002

In the study, we propose, for the practical approaches of job shop scheduling, the new dispatching rules of Job shop scheduling in order to complement the practical applications in the existing researches. The performance of the new dispatching rules is compared and analyzed with the existing methods through the computer experiments in the assumed conditions. The results can be useful to improving a field application of the job shop scheduling.