• Proceedings of the KIEE Conference
• /
• 2005.11b
• /
• pp.180-182
• /
• 2005

This paper analyzes the customer behavior on high efficiency motor programs from three angles, that is, rebates, electricity rates and the cost of measures. After deregulation, the importance of high efficiency DSM programs has been more and more increased. Especially, the motor program is one of the most high efficiency DSM program, so it Is needed the policy to promote the motor programs diffusion.

• Journal of the Korean Institute of Telematics and Electronics A
• /
• v.31A no.5
• /
• pp.121-125
• /
• 1994

We examine the conventional method of measuring the internal optical loss using the dependence of the reciprocal external quantum efficiency on the cavity length in laser diodes. It is shown that the implicit assumption of constant internal differential quantum efficiency ${\eta}_{id}$, which has been customarily misinterpreted as internal quantum efficiency ${\eta}_{i}$, is not valid for devices with short cavity length. Therefore, for reliable measurments long cavity data should be used.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 1997.10a
• /
• pp.282-285
• /
• 1997

The torque efficiency of oil hydraulic pump is an important factor for it's performance characteristics. A study on the performance test method of oil hydraulic pump is based on test standard, but there is to be desired an study for double or tandem type oil hydraulic piston pump. So in this study present a test method on the tandem pump for torque efficiency and analysis method of the results.

• Proceedings of the KSR Conference
• /
• 2000.11a
• /
• pp.24-31
• /
• 2000

This paper evaluates the efficiency of Korea National Railroad on the basis of revenues from 1980 to 1999. There was a significant inefficiency in this organization due to operating at an decreasing return to scale area. Although Korean Railroad in 1990s has made a great effort, his performance is still low. Consequently, it is important to insure substantiality of operations than to expand business area in order to finally improve the efficiency, in particular the revenue efficiency, of the Korea Railroad.

• International Journal of Quality Innovation
• /
• v.2 no.1
• /
• pp.1-9
• /
• 2001

As all the other managerial activities, total quality management (TQM) has also inputs into and outputs from the process. Therefore, the principal managerial efficiency criteria of maximum outputs with minimum inputs should be applied to TQM. In this paper, the methodology for the performance evaluation of TQM by Data Envelopment Analysis (DEA) was proposed. DEA is used to measure the efficiency of TQM for each firm with the input and output data obtained by questionnaire. It is found that there are not significant differences between the firms with and without IS09000 certification and between the large and small-sized firms with respect to the TQM efficiency.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
• /
• v.11 no.10
• /
• pp.849-854
• /
• 1998

The load characteristics on the voltage gain and efficiency were analyzed using a lumped constant equivalent circuit of the piezoelectric transformer. These analytical results were confirmed by experiments. Theoretical values of voltage gain were nearly constant with experimental ones. However, It was shown that theoretical values of efficiency is higher than experimental ones.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 1998.06a
• /
• pp.183-189
• /
• 1998

In this paper, The load characteristics on the voltage gain and efficiency were analyzed sing an lumped constant equivalent circuit of the piezoelectric transformer. These analytical results are confirmed by experiments. Theoretical values of voltage gain were nearly constant with experimental ones. However, It was shown that theoretical values of efficiency had higher values than experimental ones.

• Proceedings of the KIEE Conference
• /
• summer
• /
• pp.674-676
• /
• 2004

This paper analyzes the customer behavior on high efficiency inverter program from three angles, that is, rebates, electricity rates and the cost of measures. After deregulation, the importance of high efficiency DSM programs has been more and more increased. Especially, the inverter program is one of the most high efficiency DSM program, so it is needed the policy to promote the inverter program diffusion.

• Journal of Digital Convergence
• /
• v.10 no.2
• /
• pp.63-71
• /
• 2012

This paper investigates efficiency analysis to IT HRD programs in the dynamic perspective. First, empirical result shows that government fund of IT research center is significantly associated with SCI thesis and the more trial goods and SW development is connected with the more patent and technology transfer. Second, ITRC program has been operated efficiently since 2000. Finally, dynamic efficiency analysis implicates that ITRC program is more efficient than other IT SoC program and foreign student support program. The reason why ITRC program is more efficient is generated not from the effect of imitation by catch-up strategy to developed HRD programs, but new operation system introducing and utilizing HRD performance system.

• Journal of Korea Port Economic Association
• /
• v.37 no.2
• /
• pp.91-105
• /
• 2021

The current increasing size of container vessels affects the container port's situation. The containerization has changed the inter-modal handling process, which brought more flexibility and comfortableness in the shipping industry sector. Thus, it is very crucial to analyze the efficiency of container ports in the regional sphere. Such kind of efficiency analysis provide a powerful management tool for port operators and shipping managers in the Mediterranean market, and it also helps to form an information for planning new regional and national port operations. This paper aims to analyze the ports' technical efficiency of Mediterranean major container ports. It is conducted to establish the model of port performance and efficiency through the empirical test of the various factors. Regarding to the panel data collected from the 48 DMUs (decision making units), this study attempts to provide the empirical basis of the port efficiency relative to another factors in the total port performance. Due to the complexity of the various activities carried out at container ports, the study focuses only on the technical efficiency at the level of the Mediterranean container port. Unlike the practice of cross-sectional data analysis, originally established by Charnes et al. (1985), the panel data in DEA window analysis applications are used. The main focus of this study is the relative technical efficiency of 12 container ports from 7 countries in the Mediterranean market. The selection of ports under study is based on their high handling capability and rankings in World Top 100 (Containerization International, 2018).