• 한국지반환경공학회 논문집
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• 제19권1호
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• pp.5-14
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• 2018

건설 현장에서 생산되는 각종 계측 데이터 내에는 다양한 원인에서 생성된 각종 이상 데이터가 포함되어 있다. 본 연구에서는 시계열 데이터 내에 포함된 이상 데이터의 효과적 판정을 위한 합성신호 생성 기법과 그를 이용한 회귀분석, 최종적인 이상 데이터 판단과 평가 등에 관한 연구를 수행하였다. 방대한 데이터로 구성된 다수 데이터셋에 대한 이상 데이터 평가 시 다수의 데이터셋 간의 상관성을 가중치로 한 합성신호는 특정 데이터셋 과의 상관성을 크게 향상 시키는 효과를 보였으며, 이를 통해 효과적인 이상 데이터 판정이 가능하였다. 인위적 이상 데이터가 포함된 인공 오류 데이터를 생성하고 이에 합성신호 기법을 적용한 결과, 이상 데이터 판정 정확도가 크게 증가 하였으며 이러한 결과는 이종 시계열 모델의 경우에서도 동일하게 확인되었다. 이상 데이터 판정의 정확도는 신호 합성에 이용되는 데이터셋 수가 많고 시계열 모델 특성이 유사할수록 크게 증가하였다.

• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.349-362
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• 2021

This study aims to examine the effect of environmental performance, independent board of commissioners, and firm size on environmental disclosure measured by the Indonesian environmental index. The population in this study is manufacturing and coal mining companies that follow "PROPER" and are listed on the Indonesia Stock Exchange (IDX) from 2017 to 2019. This research was conducted by reviewing annual reports to collect information on environmental disclosures. The sampling used in this study was purposive sampling technique and obtained a sample of 117. Also, the data analysis technique used was multiple linear regression analysis with statistical hypothesis testing. The results showed that environmental performance and firm size had a positive effect on financial performance. Meanwhile, the independent board of commissioners does not affect financial performance. Furthermore, environmental performance, firm size, and financial performance have a positive effect on environmental disclosure. While the independent board of commissioners does not affect environmental disclosure. The findings of this research suggest that environmental performance has a significant positive effect on financial performance. The hypothesis is accepted, meaning that companies that are sensitive to environmental problems and run eco-efficiency operations will strengthen the company's profitability.

• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.483-490
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• 2021

In Indonesia, coffee shops, commonly called warung or kedai shops, have begun to appear amid society from remote villages to urban centers. Therefore, the purpose of this study is to examine the effect of cafe atmosphere (i.e., exterior, interior, interior point-of-purchase displays and store layout) on the purchase decision of Generation Z. This study is conducted because of cafe competition is currently overgrowing. This study model consisted of five variables: exterior, interior, interior point-of-purchase displays, store layout, and purchase decision. Sampling in this study used non-probability, with a purposive sampling technique. According to predetermined criteria, the data collection technique employed a questionnaire distributed online to consumers had visited a cafe at least once in the last three months. This study's sample was 137 cafe visitors in Yogyakarta, representing one of the big cities in Indonesia. Therefore, the data was analyzed by using multiple regression. The results of the study indicated that the exterior and interior had a positive and significant effect on purchasing decision. Likewise, interior point-of-purchase displays and store layout positively and significantly affected purchase decision. In addition, this study's findings generally concluded that the cafe atmosphere had a positive and significant effect on purchase decision.

• 유통과학연구
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• 제20권7호
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• pp.97-105
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• 2022

Purpose: This study aims to analyze and prove the effect of logistic capability and Total Quality Management practices on Micro, Small and Medium Enterprises (SME) performance directly or mediated by non-financial performance. Research design, data and methodology: This study tested the hypothesis using Hierarchical multiple regression analysis, the method of data collection in this study was using questionnaire, the sampling technique was purposive sampling technique, with SME that has been established for more than 5 years and manufacturing. The data analyzed were 180 respondents using SPSS 25. Results: The findings showed that logistic capability has direct and indirect effects on SME financial performance and has a positive effect on SME financial performance mediated by non-financial performance. While the total quality management practices have a positive effect on SME financial performance mediated by non-financial performance. Thus, companies can achieve maximum financial performance if they invest in developing employee knowledge and concerning on non-financial actions, such as employee satisfaction, innovation and proactively seeking market opportunities. Conclusions: In conclusion, one of the main factors that companies need to consider to improve financial performance is non-financial performance in mediating the effect of logistic capability and TQM practices on the financial performance of SMEs.

• The Journal of Asian Finance, Economics and Business
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• 제8권6호
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• pp.1203-1211
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• 2021

This study aims to examine the Analysis of Factors Affecting Village Financial Management in Bali Province. Research with a quantitative approach. The research sample consisted of 87 village heads who manage village finances and are responsible for village government financial reports. The data analysis technique uses multiple linear regression and the data collection technique uses a questionnaire. The results showed that the duality of village government (customary village and village apparatus), the capacity of village government officials and the competence of village assistants had a significant effect on the success of village fund management. Meanwhile, accountability does not affect the success of village fund management due to the lack of responsibility of village government officials for village financial management, which causes a negative impact on the sustainability of village governance. Empirically, the better the level of accountability, the better the success of village financial management. Other research results place the synergy of government, the capacity of government officials and the competence of village assistants as social capital, which have a positive effect on the success of village financial management, so that it becomes the focus of the village government in implementing public services and controlling government performance, both financial and non-financial.

• 대한토목학회논문집
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• 제31권1D호
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• pp.43-50
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• 2011

택시 프로브(Probe)를 이용한 구간통행속도 모니터링체계는 지능형교통체계(ITS)의 핵심적인 하부시스템 중 하나이다. 택시 프로브기법을 통해 수집되는 구간통행속도는 도시가로망의 교통상태 모니터링과 통행시간 정보제공에 널리 활용되고 있다. 그러나 택시 Probe기법은 표본수가 적고 교통혼잡으로 인하여 구간통행시간이 자료수집 주기보다 큰 경우, 실시간으로 자료가 수집되지 않는 누락상태가 발생하게 된다. 이러한 누락상태는 단일시간대에서 다중시간대에 걸쳐 발생하게 되며, 기존의 단일시간대 예측기법으로는 다중시간대의 상태를 예측하지 못하는 단점이 있다. 따라서 다중시간대 누락상태에서 실시간 구간통행속도를 예측하기위한 기법이 요구된다. 본 연구에서는 기존의 단일시간대 예측기법의 한계를 극복하면서 단일 및 다중시간대 통행속도를 예측하기위한 기법을 개발하였다. 개발된 모형은 비모수회귀(NPR)을 기반으로 개발되었으며, 다중시간대 예측에도 불구하고 기존의 단일시간대 예측기법보다 우수한 정확도를 보였다.

• 대한인간공학회지
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• 제20권1호
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• pp.87-113
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• 2001

This study introduces the concept of image/impression of a product design, human interface elements, and the relationships between them. It is assumed that the human interface can be decomposed into detailed design elements, called human interface elements. This study attempts to build functional relationships between the image/impression of a product and human interface elements. Two different human factors experiments were conducted to demonstrate the effectiveness of the approach suggested in this study. A total of 35 audio/visual consumer electronics products (e.g., CD players, VCRs) were shown on a display screen and the subjects were instructed to evaluate them in terms of eight image/impression dimensions. One experiment was conducted using Korean subjects while the other using American subjects. The functional relationships were modeled by using the multiple linear regression technique. Similarity and difference between the Korean and the American subjects were analyzed. The approach suggested in this study is expected to help designers and developers identify important design variables to enhance the subjective satisfaction of a product design.

• 대한교통학회지
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• 제5권2호
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• pp.97-112
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• 1987

The objective of this study is to construct not only trip production and attraction in Pusan but also to study and examine appropriateness of the model positively. Depending on the estimation models of trip production and attraction of each zone that have been constructed in this study, it has been proved that the formula of multiple regression by the explanation variables like the indices of total employees, total students, floor spaces of residentials and floor spaces of educational and cultural areas within the study areas have very high explanatory capacity and appropriateness. It si considered that a study of method on new division, integration or omission etc. of the existing zones preceeding for reduction of calculation quantity and a study of estimation error have to be done for future study, if these models are used actually.

• Interdisciplinary Bio Central
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• 제2권2호
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• pp.3.1-3.4
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• 2010

In the present research, we assessed the utility of the structural information of drugs for predicting human in vivo intrinsic clearance from in vitro intrinsic clearance data obtained by human hepatic microsome experiment. To compare with the observed intrinsic clearance, human intrinsic clearance values for 51 drugs were estimated by the classical methods using in vivo-in vitro scale-up and by the new methods using the in vitro experimental data and selected molecular descriptors of drugs by the forward selection technique together. The results showed that taking consideration of molecular descriptors into prediction from in vitro experimental data could improve the prediction accuracy. The in vitro experiment is very useful when the data can estimate in vivo data accurately since it can reduce the cost of drug development. Improvement of prediction accuracy in the present approach can enhance the utility of in vitro data.

• Membrane and Water Treatment
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• 제1권3호
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• pp.181-192
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• 2010

A linear quantitative structure-property relationship (QSPR) model is presented for the prediction of rejection in permeation through membrane. The model was produced by using the multiple linear regression (MLR) technique on the database consisting of retention data of 25 pesticides in 4 different membrane separation experiments. Among the 3224 different physicochemical, topological and structural descriptors that were considered as inputs to the model only 50 were selected using several criteria of elimination. The physical meaning of chosen descriptor is discussed in detail. The accuracy of the proposed MLR models is illustrated using the following evaluation techniques: leave-one-out cross validation procedure, leave-many-out cross validation procedure and Y-randomization.