• 수산경영론집
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• 제42권1호
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• pp.85-96
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• 2011

We have done the input-output analysis to see the over all impact of flounder industry of Jeju region on the domestic economy of Korea. To do the input-output analysis, we have constructed the data set for the input-output table by using the existing data set in the "2003 input- output table of Jeju regional area" published by the joint work of Jeju branch of Korea bank and the Jeju Development Institute, together with some raw data provided by Jejudo Marine Fish-Culture Cooperative. We have also produced input coefficient of flounder industry by making flounder industrial sector exogenous, separated from intermediate demand. To summarize our empirical results, the inducement effect of production, value added, and employment of Jeju flounder aquaculture industry are 300 billion won, 116 billion won and 1,800 people respectively. In conclusion, the results of this study suggest flounder industry of Jeju region contributes powerfully to not only Jeju economy but also all over the Korea economy.

• KDI Journal of Economic Policy
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• 제37권2호
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• pp.40-63
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• 2015

Anthracite exports have special value within the DPRK's economy. In this paper, we focus on what determines the DPRK's anthracite exports to China. We use panel data consisting of cross-section data from 30 provinces in China and quarterly time-series data from 1998 to 2013. Controlling for all other variables that affect anthracite imports, the variable for steel production in China is robust and statistically significant. This is consistent with on-site interviews which indicate that much of North Korean anthracite is consumed by China's steel industry. This implies that the North Korean authorities need to make adjustments to the foreign trade structure, as the import demand for anthracite in China may decline further.

• 한국산학기술학회논문지
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• 제13권5호
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• pp.1947-1953
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• 2012

지구 온난화의 영향으로 차량 연비 향상은 매우 중요한 문제이다. 본 논문에서는 경사를 갖는 고속도로를 주행하면서 차량 전방의 고도 데이터를 이용하여 주행속도를 예측하는 3가지 연비 향상 알고리즘을 제안하고 성능을 평가했다. 제안하는 알고리즘은 가중평균경사각(WMGA), 하강 경사에서 감속 후 재가속 I, II(RAADE I, II) 3가지이다. 이를 위해 GPS 수신 데이터 중에서 거리와 고도 데이터를 추출하여 각 구간의 경사도와 주행저항을 계산한다. 제안하는 3가지 알고리즘에 대한 속도 프로파일을 약 213Km 영동고속도로 전 구간에 대해서 완성하여 모의 주행하여 연비를 측정한다. 그 결과 제안하는 알고리즘 중에서 RAADE II 알고리즘이 기존 CVELCONT3 알고리즘 연비 대비 약 3.571% 우수한 결과를 얻었다.

• 품질경영학회지
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• 제47권4호
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• pp.875-894
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• 2019

Purpose: This research is the impact of service quality of Economy Hotels on customer satisfaction and Re-visit Intention in China. It reviews the empirical theories about Economy Hotels at home and abroad, based on SERVPERF, combines with the actual situation of China's Economy Hotels, and then constructs based on the research results at home and abroad. In the subfactor of service quality, "recovery" is added, and the relationship model between the service quality of Economy Hotel, customer satisfaction and Re-visit Intention is designed, in which the mediated effect of "customer satisfaction" between the service quality's subfactor and Re-visit Intentio is explored. Methods: 334 questionnaires were distributed to the check-in guests of three Home Inns in China's first-tier cities (ShangHai,BeiJing,ShenZhen), of which 300 were valid for data analysis. Result: The data analysis results show that the Economy Hotels' subfactor of service quality have a positive impact on customer satisfaction and Re-visit Intention, and customer satisfaction also plays an mediated effect. (partial mediation: tangible, reliability, recovery; full mediation: responsiveness, assurance, empathy) Conclusion: The research puts forward the enlightenment points for the development of Economic Hotels through the differences in the development emphasis and service quality between Economic hotels and other types of hotels, so as to improve the satisfaction and market competitiveness of China's Economic hotels through the research results.

• 한국콘텐츠학회논문지
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• 제19권3호
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• pp.183-196
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• 2019

오늘날 소비는 재화의 소유권을 획득하는 것으로 인식되었던 것에서 점차 벗어나면서 재화를 구매하여 소유하는 대신 일시적으로 접근하고 이용하기 위해 비용을 지불하는 방식으로 변하고 있다. 이렇게 소유하지 않고 사용하는 경제활동을 공유경제라고 하며 이는 기본적으로 한 번 생산된 제품, 서비스 등의 자원을 많은 사람과 함께 나누어 사용하는 방식으로써 현재 전 세계에서 주목받고 있는 경제 패러다임이다. 본 연구는 공유경제 서비스의 성공요인을 이용의도로 규정하고, 유용성, 즐거움, 위험성을 공유경제 서비스의 특성으로 제시하여 이러한 특성이 소비자의 태도와 신뢰에 미치는 영향과 태도와 신뢰가 공유경제 서비스 이용의도에 미치는 영향을 연구하고자 하였다. 이들 변수를 기초로 하여 8개의 연구 가설이 설정되었다. 자료는 인터넷 설문을 통해 수집하였다. 표본 크기는 250개이고, SPSS와 AMOS를 이용하여 통계분석을 하였다. 분석 결과 유용성은 태도에, 즐거움은 태도와 신뢰에, 위험성은 신뢰에 유의한 영향을 주고, 태도와 신뢰는 이용의도에 의미 있는 영향을 미치는 것으로 나타났다. 그러나 유용성은 신뢰에는 영향을 미치지 않고, 위험성은 태도에는 영향을 미치지 않는 것으로 확인하였다.

• International Journal of Automotive Technology
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• 제6권3호
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• pp.269-275
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• 2005

The engine cooling system for a medium duty V6, 4.5 L diesel engine was modeled with a commercial code, GT-Cool in order to investigate the effect of controllable electric pump on the cooling performance and the fuel economy. The simulation results of the cooling system model with mechanical coolant pump were validated with experimental data. Two different types of electric pumps were implemented into the cooling system model and PID control for electric pump operation was incorporated into the simulation study. Based on the simulation result with electric pump, conventional thermostat hysteresis was modified to reduce pump operation for additional improvement of fuel economy, and then the benefit of electric pumps with modified thermostat hysteresis on fuel economy was demonstrated with the simulation. The predicted result indicates that the cooling system with electric pump and modified thermostat hysteresis can reduce pump power consumption by more than $99\%$ during the FTP 74 driving cycle.

• 한국자동차공학회논문집
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• 제12권1호
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• pp.153-161
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• 2004

A vehicle fuel economy is one of the most important issues in view of environmental regulation and customer's needs. In order to improve the vehicle fuel economy, great efforts has been carried out on the components bases. However, systematic analysis of vehicle fuel consumption is necessary for the further improvement of vehicle fuel economy. In this paper, a methodology for the breakdown of vehicle fuel consumption was studied and proposed for systematic analysis of the vehicle fuel economy. The energy equation for the vehicle power train was set up for the analysis of the vehicle fuel economy and simplified to be calculated or estimated using the measured data in a vehicle. The amount of fuel that was used in vehicle components under arbitrary driving conditions was quantified.

• 한국콘텐츠학회논문지
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• 제8권12호
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• pp.414-423
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• 2008

연구의 목적은 비즈니스 여행자들이 중요하게 생각하는 우리나라 특급호텔과 중저가호텔 선택속성의 차이점과 그에 따른 만족도를 파악하여 중저가호텔이 특급호텔과 구분되는 경쟁우위의 방안을 모색하고 이에 따른 숙박환경을 개선하여 국제적으로 경쟁력 있는 국내 중저가호텔의 개발과 활성화를 위한 것이며 신규투자나 중저가호텔을 건설하는 투자자에게 그에 따른 필요한 기본 개념을 제공하기 위한 것이다. 연구결과는 특급호텔 수준의 서비스를 원하면서도 상대적으로 저렴한 중저가호텔을 선호하는 비즈니스 여행자를 위한 중저가호텔의 모델에 대한 이해 및 시장 세분화를 위한 기초자료를 제공하였다는 점에서 의미가 있다고 볼 수 있다.

• 대한가정학회지
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• 제37권1호
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• pp.145-156
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• 1999

The purpose of this study is to investigate the relationships between mothers' and college women's as daughters consciousness and behaviors for diligence, frugality and economy and also analyze related variables such as socio-economic variables. The data used in this study included 273 college women and their mothers living in Seoul. The results of this research were as follows. 1) Three variables of consciousness and behaviors of mothers and their daughters are still highly maintained. There are significant differences between all of the consciousness and behavior variables except frugality between mothers and their daughters. 2) Mother's diligent consciousness is positively correlated with daughter's frugaliy behavior and economy consciousness. Mother's economy consciousness and behavior are positively correlated with daughter's frugality behavior. Only mother's frugality consciousness negatively correlated with daughter's frugality consciousness and economy behavior. 3) The mothers' consciousness and behaviors of frugality, and economy varies significantly according to the socio-economic variables such as mother's education, mother's job, income and social status. 4) The daughters' consciousness and behaviors of diligence, frugality, and economy varies significantly according to the amount of allowence.

• 한국자동차공학회논문집
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• 제21권5호
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• pp.34-39
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• 2013

The gear shifting timing of a manual transmission vehicle is influencing fuel economy. This paper focuses on an gear shifting indicator of an city bus with manual transmission, which can improve fuel economy. The shift indicator is supposed to collect the vehicle data during driving, calculate and compare fuel economy with and without gear shifting, and indicate the proper gear shifting timing. The H/W and S/W of the shift indicator are developed and tested on city bus in this research. The experiments are carried out on real road by 3 different drivers and the results show the improvement of fuel economy from 6.0% to 21.4%. The average engine torque and speed are reduced due to early gear shifting and the usage of highest gear is increased. The results of chassis test are also performed and show 7.5% improvement of fuel economy.