• 한국건설관리학회논문집
• /
• 제11권6호
• /
• pp.78-88
• /
• 2010

건설 프로젝트의 대형화, 복잡화에 따라 경쟁력 확보를 위하여 비효율성을 제거하고 합리적인 관리전략 수립을 위한 프로젝트 성과측정의 중요성이 부각되고 있다. 따라서 프로젝트의 성공에 영향을 미치는 요인에 대한 연구가 지속적으로 진행되었으나 이러한 성공요인은 프로젝트 시공자가 성과 증진을 위하여 실행하는 관리방법과 개선할 수 없이 받아 들어야 하는 프로젝트 고유의 특성이 혼재되어 있어 측정된 성과 자료를 벤치마킹하는데 어려움이 있다. 따라서 본 연구에서는 프로젝트의 성과에는 영향을 미치지만 시공자가 개선할 수 없는 요인을 프로젝트 특성으로 정의, 분류하였으며, 특성에 따른 성과증진에 어려움 정도를 프로젝트 관리 실무자 조사를 통하여 정량적으로 평가하였다. 본 연구에서 도출한 프로젝트 성과 난이도 지수로 프로젝트 초기단계의 프로젝트 특성 정보를 활용한 프로젝트 수행의 어려움 정도를 예측할 수 있으며, 프로젝트 시공자의 효율적인 프로젝트 관리를 가능하게 할 것이다.

• Journal of Preventive Medicine and Public Health
• /
• 제27권3호
• /
• pp.487-504
• /
• 1994

A cross-sectional study was performed to evaluate the effects of chronic low-dose solvent on neurobehavioral performance of 118 male car painters. A control group of 113 workers matched for age was selected from different sections of the factory. The mean age and the mean duration of employment were 33 years and 6.7 years in both groups. Mean years of education were 11.4 years in car painters and 11.8 years in controls. Each worker completed a medical and occupational questionnaire and four tests of Swedish performance evaluation system. These included simple reaction time, symbol digit, digit span and finger tapping speed. Althougth the mean duration of employment was 6.7 years, comparison of mean performance showed a significantly poorer performance on simple reaction time (p<0.05), symbol digit(p<0.01) and digit span(p<0.05) in car painters. In univariate analysis, age and educational level contributed to poorer performance on symbol digit and digit span. Smoking appeared to slow finger tapping speed in car painters. Performance of four tests of car painters exposed to high level of solvent was poorer than that of car painters exposed to low level. In multiple regression models, controlling for age, alcohol, smoking and shift work, solvent exposure was found to be associated with performance of simple reaction time, symbol digit and digit span and exposure to high level of solvent was related to poorer performance of symbol digit and digit span.

• 대한지역사회영양학회지
• /
• 제11권6호
• /
• pp.750-760
• /
• 2006

This study was designed to investigate the correlation between perceived TQM performance and job satisfaction of dietitians. The objective of the study is to help the management of foodservice by providing a direction which will elevate perceived TQM performance of dietitians and presenting plans which will ensure effective foodservice management. The survey sample was dietitians (n = 308) who were charged with foodservice management. The questionnaires requested information about demographics self-perception of TQM importance and performance levels, and Job satisfaction. According to the TQM importance and performance analysis, the level of performance was typically high in TQM items recognized as important by dietitians and low in areas where the recognized level of importance was low. Analysis was conducted on the job satisfaction according to demographic characteristics. The level of satisfaction in terms of salary and promotion increased relatively for those working in the industries and those who were older, married, and full-time employees with longer careers. The lesser the number of working hours, the higher their satisfaction levels were. Canonical correlation analysis between TQM performance and job satisfaction indicated higher canonical correlation (canonical correlations coefficient: 0.59). In conclusion, TQM performance-job satisfaction showed higher canonical correlation. When information exchange via network is made possible and more external customer recognition is gained, it increases the level of job satisfaction. The above results suggest that further research on the scope of TQM performance is thoroughly needed and continual training is necessary for foodservice managers.

• 한국보건간호학회지
• /
• 제36권3호
• /
• pp.334-346
• /
• 2022

Purpose: This survey was conducted to investigate the level of coronavirus disease 2019 (COVID-19)-related peritraumatic distress and job stress among clinical nurses and evaluate their effects on nursing performance. Methods: The participants were 115 nurses from 5 hospitals in 3 regions in Korea. The peritraumatic distress index (PDI), job stress, and nursing performance scales were used for the analysis. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficient, and multivariate regression analysis. Results: The level of peritraumatic distress of nurses was scored at 22.8 ± 9.26 (range 0 to 45). The level of job stress was scored at 2.69 ± 0.51 (range 1.3 to 3.7). The level of nursing performance was scored at 3.73 ± 0.51(range 1.76 to 5.0). Peritraumatic distress was observed to be positively correlated with job stress (r=.408, p<.001). However, peritraumatic distress and job stress were not correlated with nursing performance. In multivariate regression, the only variable seen to affect nursing performance was the work experience of the nurses. Work experience levels of five to fifteen years were observed to have a significant positive effect on nursing performance. Conclusion: The work experience of nurses directly influenced nursing performance during the pandemic period. Thus, to retain more nurses and to improve nursing performance, it would be necessary to develop various strategies to decrease their peritraumatic distress and job stress caused by the pandemic.

• 대한전자공학회논문지SD
• /
• 제45권4호
• /
• pp.78-85
• /
• 2008

네트워크 SoC 칩을 대상으로 SystemC를 이용한 High-level 설계 방법을 연구하였다. 실제 Verilog RTL 모델과 비교하여 깊이있는 Architecture 구조탐색과 정확한 SystemC 모델 cycle 검증을 토대로 하여 High-level 설계를 강조할 것이다. 대다수 High-level 설계와 접근방법과 다르게, SystemC 모델과 Verilog RTL 모델의 성능을 비교해 보고, SystemC-based platform을 검증하기 위해 On-chip test board 측정 데이터를 이용하였다. 이 논문에서는 High-level 설계기법이 RTL 모델과 같은 정확성을 얻을 수 있을 뿐만 아니라, RTL 모델보다 100배 이상 빠른 시뮬레이션 속도를 달성할 수 있음을 보여 주었다. 그리고, 아키텍처 구조탐색을 통해서 시스템 성능하락의 원인을 파악하고, 대안을 찾아보았다.

• Journal of Korea Trade
• /
• 제27권3호
• /
• pp.65-86
• /
• 2023

Purpose - As globalization progresses, complexity also increases, and various factors that threaten port functions are emerging. Accordingly, the demand for port security to prevent the crisis and resilience that quickly recovers its original function after the crisis is also increasing in port operations. However, few studies have examined how to ensure the port security and how the resilience affects operation performance of port and sustainability performance as well. So the study aims to find out how port security affects port resilience and port operational performance, and consequently, this two factors affect socioeconomic and environmental sustainability performance respectively and synthetically. Design/methodology - Confirmatory Factor Analysis (CFA) was first performed to determine the validity of the factors of model and hypothesis test was performed using Structural Equation Model (SEM) to analyze the Port Performance Model, which show the perception logic among port security level, port resilience, operation performance, and sustainability performance. In order to empirically analyze this model, total 264 respondents from port security operators, shipping companies in South Korea were surveyed. Findings - As result of SEM, First, port security level positively affected the resilience (H1) and cargo operational performance (H2) but not in both of the sustainability performances (H3, H4). Second, resilience positively affected only cargo operational performance (H5) and socio-economic sustainability performance (H7). Last, cargo operation performance positively affects the both of sustainability performances (H8, H9). Originality/value - It was confirmed that port security could improve cargo operational performance through ensuring port resilience and eventually increase the socio-economic sustainability. Therefore the study implies that careful integration and management of port security, port resilience, and sustainability are required, along with compromise on sustainable development goals in the social, economic, and environmental area among all stakeholders.

• Asia pacific journal of information systems
• /
• 제16권2호
• /
• pp.111-122
• /
• 2006

This paper investigated the causal relationship between IT investment and economic performance with the office, computing and accounting machinery (OCAM) and gross domestic product (GDP) statistics from the United States for the period 1961 to 2001. Due to non-stationary aspects of the series, found by unit root tests, it was deemed applicable to apply growth models using the first difference of the series. The results indicate that IT investment growth at the country level do not only cause economic performance growth, but are also caused by economic performance growth. While IT investment growth affect economic performance growth over shorter time periods, economic performance growth affect IT investment growth over longer time periods. As a result, this study reveals IT investment growth have the preceding effect on economic performance growth, and then economic performance growth impact subsequently on IT investment growth.

• 벤처창업연구
• /
• 제11권4호
• /
• pp.91-101
• /
• 2016

본 연구의 목적은 사이버대학의 성과에 영향을 미치는 서비스 특성화 요인을 찾는 것이다. 본 연구에서는 사이버대학의 성과를 교수, 졸업 및 취업, 브랜드 이미지 측면에서 접근하였고, 선행연구를 토대로 하여 사이버대학의 성과에 영향을 미치는 서비스 특성화 요인으로 콘텐츠 다양성, 콘텐츠 품질, 콘텐츠 실무지향성, 강의 실재감, 학습관리를 도출하였다. 연구모형을 검증하기 위해 중국의 사이버대학에 재학 중인 대학생들을 인터넷 설문을 배포하여 총 170부의 유효설문을 수집하여 실증 분석하였다. 실증 분석한 결과, 다음과 같은 다섯 가지의 연구결과를 확인하였다. 첫째, 콘텐츠 다양성 수준이 높을수록 사이버대학의 성과는 높아지는 것을 확인하였다. 둘째, 강의 콘텐츠 품질이 우수할수록 사이버대학의 성과는 높아지는 것을 확인하였다. 셋째, 콘텐츠 실무 지향성이 높을수록 사이버대학의 성과가 높아지는 것을 확인하였다. 넷째, 강의 실재감이 높을수록 사이버대학의 성과는 높아지는 것을 확인하였다. 다섯째, 학습관리 수준이 높을수록 사이버대학의 성과가 높아지는 것을 확인하였다. 지금까지는 사이버대학에 관한 선행연구들은 주로 학습자의 학습성과 향상 방안을 찾는데 초점이 맞춰져 있었다. 그러나 본 연구에서는 이러한 선행연구와 달리 사이버대학의 비즈니스 모델 측면에 초점을 두고 접근하였다. 왜냐하면 교육 분야의 경쟁이 점차 글로벌 경쟁으로 심화되고 있어 기존의 비즈니스 모델로는 한계가 있어 새롭게 재검토할 필요가 있기 때문이다.

• Journal of Positioning, Navigation, and Timing
• /
• 제1권1호
• /
• pp.45-49
• /
• 2012

The flight performance evaluation of navigation system is very significant because the reliability of navigation data directly affect the safety of aircraft. Especially, the high-level navigation system such as DGPS/INS, need more precise flight performance evaluation method. The performance analysis is evaluated by comparing between the navigation system in aircraft and reference trajectory which is more precise than navigation system in aircraft. In order to verify DGPS/INS performance of m-level, the GPS receiver, which is capable post-processed Carrier-phase Differential GPS(CDGPS) method of cm-level, have to be used as reference system. The DGPS/INS is estimated the Center of Gravity (CG) point of aircraft to offer precise performance while the reference system is output the position of GPS antenna which is mounted on the outside of aircraft. Therefore, in order to more precise performance evaluation, it needs to compensate the lever arm and coordinates transformation. This paper use quaternion and Direct Cosine Matrix(DCM) methods as coordinate transformation matrix in lever arm compensation of CDGPS reference trajectory. And it compares NED errors of DCM and quaternion transformation in lever arm of reference trajectory via DGPS/INS result.

• The Journal of Asian Finance, Economics and Business
• /
• 제7권9호
• /
• pp.341-350
• /
• 2020

This study aims to verify the relationship between overseas activities and performance of Korea's SMEs during the last financial crisis. Whether overseas activity performance of enterprises differed was determined based on characteristic variables, including the degree of concentration on R&D and marketing. This study also examined how SMEs' international transactions and their performance differed based on internal variable such as the level of stock holding and firm size. This study developed a model for analyzing the relationship between the level of internationalization and performance of Koran SMEs listed in the KOSDAQ. We used firm-level data, including annual reports and various data sources such as the KISVALUE program. To smooth annual fluctuations in accounting data, we used a three-year average from 2006 to 2009 for each variable in the study. The results showed that proactive overseas activities ultimately had a positive effect on an enterprise's performance, even though it initially had a negative effect. Therefore, enterprises should focus their capacity on R&D and marketing environment. Although numerous studies have focused on the relationship between overseas activities and performance of enterprises, the present study analyzed whether enterprises should continuously engage in overseas activities and what capacities they should strengthen during a global economic recession.