• Journal of Korean Society of Transportation
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• v.18 no.3
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• pp.101-112
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• 2000

The Purpose of this Paper was to revise the method of USHCM and to establish new method for level of service analysis on two-lane rural highways. For this Purpose, total delay rate was selected as new MOE for level of service, replacing the present Percent time delay. This result showed that total delay rate was more effective for considering the effects of traffic flows, auxiliary lane, and vertical tirade. The application of total delay rate could resolve the Problems in the USHCM method, such as too wide ranges for level of service D and E, and the use of different Procedures for level of service analysis of general terrain segment and specific grade Procedures. The research results are as follows First, a new method for level of service analysis on two-lane rural highways was developed using the total delay rate. Second, a new classification for level of service was developed and a consistent method applicable for general terrain segment and specific tirade Procedures was developed. Third, the desired speed on two-lane rural highways was determined as 85km/h.

• School Mathematics
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• v.13 no.1
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• pp.207-227
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• 2011

This study developed a statistical thinking level with constructs framework from based on Jones, Thornton, Langrall, & Mooney (2000) to analyze the 6th graders' thinking level shown on their survey activities. It was modified by 5 constructs framework such as collecting, describing, organizing, representing, and analyzing and interpreting data with four thinking levels, which represent a continuum from idiosyncratic to analytic reasoning. As a result, among four levels such as idiosyncratic level (level 1), transitional level (level 2), quantitative level (level 3), and analytical level (level 4), levels of two through four are shown on statistical thinking levels in this study.

• Journal of the Korean Data and Information Science Society
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• v.26 no.1
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• pp.65-75
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• 2015

This paper analyzes the determinants of wage for the college and university graduates utilizing both individual-level and industry-level variables. We note that wage determination has multi-level structure in the sense that individual wage is influenced by individual-level variables (level-1) and industry-level (level-2) variables. Then, the assumption that individual wage is independent in the classical regression is violated. Therefore, this paper utilizes the hierarchical linear model (HLM). The major results are the followings. First, the multiple correspondence analysis including level-1 and 2 variables reveals that both level 1 and level 2 variables affects individual wages judging from the fact that the values of level 1 and level 2 variables differ across the different level of individual wage groups. Second, the decision tree analysis including level-1 and 2 variables shows that the most influential variable in wage determination is industry-level wage and the next is industry-level working hour, ages and sex in the decling order in. This suggests that the utilization of the HLM is appropriate since the characteristics of industry is important in determining the individual wage. Third, it is shown that the HLM model is the best compared to the other models which do not take level-1 and level-2 variables simultaneously into account.

• Journal of Korean Society of Transportation
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• v.26 no.4
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• pp.161-172
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• 2008

The level of service (LOS) evaluation method of the Highway Capacity Manual (HCM) is limited to intersections with pre-timed signal operation, while advanced real-time traffic control systems have been expending in the field. This paper proposes a preliminary framework for LOS analysis at isolated intersections controlled by COSMOS, the real-time traffic control systems robustly utilizing the degree of saturation as basic inputs. The proposed LOS evaluation framework was devised with a pilot model developed to estimate the average cycle length and green times of COSMOS. The validation test showed that the proposed framework was able to accurately project the LOS, which was separately evaluated based upon field data.

• ICROS
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• v.20 no.1
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• pp.24-27
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• 2014

본 논문은 최근 6년간 시행된 국내 외 기술수준조사(Technology level evaluation) 및 기술수준평가(Technology level assessment)의 동향을 정리한 것이다. 국내의 기술수준조사는 기술수준의 평가를 위해 기존의 기술분류 체계를 사용하거나, 평가 대상기술의 특성에 따라 새로운 분류체계를 작성하였다. 기술수준의 평가는 델파이(Delphi) 설문과 정량적인 특허 및 논문 분석 등이 동시에 수행되었다. 국외의 기술수준평가는 주로 특허, 논문, 연구원 수 등의 정량적인 평가를 중심으로 수행되었으며, 제한적으로 설문, 토론회 등의 정성적인 평가가 함께 수행되었다.

• Electronics and Telecommunications Trends
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• v.5 no.2
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• pp.156-169
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• 1990

본 기술동향에서는 시스템에서 요구되는 동작에 관한 기술을 레지스터 전송 수준의 구조에 관한 기술로 바꾸는 상위 수준 합성에 대하여 그 현황을 분석하였다. 현황 분석은 스케줄링과 할당으로 나누어 진행하였으며, 상위 수준 합성의 필요성, 내용, 기법 분석 및 시스템 분석을 행하였다. 현재의 연구가 갖는 문제점을 검토하였으며, 앞으로의 전망을 예측하였다.

• 한국사회복지학회:학술대회논문집
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• 2005.04a
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• pp.515-532
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• 2005

본 연구는 경제관련 수준이 생활만족도에 미치는 영향을 분석하였다. 이를 위해 한국노동패널조사(KLIPS)자료 중 4,294가구 10,553명을 대상으로 지역에 따른 경제관련 변인들의 차이를 분산분석을 통해 알아보았고, 단순한 경제수준 변인이 생활만족도에 미치는 영향과 경제수준을 지역에 따라 표준점수(Z-score)로 환산한 변인이 생활만족도에 미치는 영향을 회귀분석을 통해 비교하였다. 연구 결과 단순한 경제수준보다는 표준점수로 환산된 상대적 경제수준이 더 큰 설명력을 갖는 것으로 확인되었다. 또한 일정부분 생활만족도에 정적 영향을 줄 것으로 기대되었던 소득과 지출, 저축 둥 경제수준 관련 변인들이 일관되게 부적 영향을 갖는 것으로 나타났다. 이러한 결과는 가구지출 기준 상위집단과 하위집단에서 동일하게 나타났다. 한 편 상위집단과 하위집단에서의 소득 관련 변인들의 영향력이 일부 상이하게 나타났는데, 상위집단에서는 전년도의 소득이 부적으로 더 근 영향력을 갖는 반면에 하위집단에서는 전월의 소득이 부적으로 더 큰 영향력을 갖는 것으로 나타나 하위집단의 소득 불안정이 생활만족도에 영향을 주고 있음을 시사하였다.

• Proceedings of the Korean Society for Quality Management Conference
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• 2006.04a
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• pp.407-412
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• 2006

기업이 추구하는 경쟁우위요소에 따라 추구하는 경쟁전략유형을 실증적으로 분석하였다. 또한 경쟁전략유형에 따른 경영품질 수준의 차이도 분석하였다. 그리고 추구하는 경쟁우위요소와 추구하는 경쟁전략유형이 적절히 조화를 갖춤이 경영품질 수준에 어떻게 영향을 미치는지 분석하였다. 분석의 결과는 본원적 경쟁전략의 이론이 우리나라 기업에서도 그대로 적용됨을 확인하였으며, 경쟁전략의 유형에 따라 경영품질 수준에도 차이가 있음을 확인하였으며, 경쟁전략의 적합성이 맞은 기업의 경영품질 수준이 그렇지 않은 기업의 경영품질 수준보다 높음을 확인하였다. 따라서 기업은 추구하는 경쟁전략요소에 적절한 경쟁전략유형을 선택하여 추구함으로서 경영품질 수준을 향상시키고, 보다 나은 경영성과를 기대할 수 있다.

• Journal of Convergence for Information Technology
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• v.9 no.11
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• pp.218-226
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• 2019

The purpose of this study is to analyze the level and influence factors of social safety perception of middle-aged and older adults with disabilities. The subjects of the survey were older than 50 with disabilities who responded to the 2018 Social Survey. The results analyzed by Hierarchical regression analyzes showed that factors such as gender, age, place of residence, education level, subjective health status, risk response level, compliance level of others, and compliance with public order had a significant effect on the social safety perception level. Through this study, we could know the importance of personal requirements and social capital for social safety perception of middle-aged and older people with disabilities. In the future, the differences in safety perception by type of disability should be studied too.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.2
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• pp.351-360
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• 2016

The purpose of this research is to suggest directions for urban planning and policies for the creation of a happy urban environment. To achieve this objective, this study extracted the urban environment characteristic elements that were expected to affect the levels of individual happiness and empirically analyzed the factors that affect the happiness levels of people. To determine the elements of the urban environment, this research analyzed the variables, urban environment characteristics, such as physical environment, natural environment, social environment, and individual characteristics. Regarding the physical environment of the city, a lower population density and a higher level of walking environment satisfaction showed a high level of individual happiness. In terms of the natural environment of the city, more spacious park areas and higher green area satisfaction showed a high level of individual happiness. Finally, regarding the social environment of the city, social trust was found to affect the happiness levels.