• Proceedings of the KIEE Conference
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• 2004.07c
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• pp.1857-1859
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• 2004

It is widely known that the ultra high frequency (UHF) method that detects the electromagnetic wave of the PD pulses in the gas insulated space is one of the most competitive methods for its high sensitivity. From the above point of view, this paper describes the noise suppression methods and the PD measurement results of the in-service substation by the developed UHF PD measurement system which consists of the external UHF coupler, the UWB LNA and the digital storage oscilloscope. As results, it was found that the effect of the noise suppression methods were verified and that the developed external UHF coupler showed a better detection sensitivity than a conventional external coupler.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2003.09a
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• pp.471-475
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• 2003

This paper proposes a sensor-fusion technique where the data sets for the previous moments are properly transformed and fused into the current data sets to enable accurate measurement, such as, distance to an obstacle and location of the service robot itself. In the conventional fusion schemes, the measurement is dependent on the current data sets. As the results, more of sensors are required to measure a certain physical parameter or to improve the accuracy of the measurement. However, in this approach, instead of adding more sensors to the system, the temporal sequence of the data sets are stored and utilized for the measurement improvement. Theoretical basis is illustrated by examples and the effectiveness is proved through the simulations. Finally, the new space and time sensor fusion (STSF) scheme is applied to the control of a mobile robot in an unstructured environment as well as structured environment.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.104.2-104
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• 2002

This paper proposes a sensor-fusion technique where the data sets for the previous moments are properly transformed and fused into the current data sets to enable accurate measurement, such as, distance to an obstacle and location of the service robot itself. In the conventional fusion schemes, the measurement is dependent on the current data sets. As the results, more of sensors are required to measure a certain physical parameter or to improve the accuracy of the measurement. However, in this approach, instead of adding more sensors to the system , the temporal sequence of the data sets are stored and utilized for the measurement improvement. Theoretical basis is il lustrated by examples and...

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.06a
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• pp.338-342
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• 2003

Hybrid machine is based on hardware technologies of machine tool and software technologies of open architecture controller. In machining technology, combination technology of turning, milling, and grinding and in machining energy technology. combination of mechanical, electrical, and chemical technology are developed. This paper describes hybrid machine technology for combination of machining, on-machine measurement, on-machine CAM, and on-machine remote monitoring and control in open architecture controller environment. For on-machine measurement, non-contact measurement technology based on CAD information is developed. For on-machine CAM, interactive CAM program for automatic NC program generation and tool path simulation is developed. For generation on-machine remote monitoring and control, suitable interface method between web program and CNC is proposed. The developed hybrid machine technology is implemented in 3 axes milling machine for evaluation of operablity.

• Proceedings of the KSR Conference
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• 2007.11a
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• pp.306-312
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• 2007

The running safety of rolling stock is assessed by derailment coefficient. It requires lots of preparatory time, expenditure and high measurement technique to measure derailment coefficient. If derailment coefficient could be measured when track or vehicle is maintained, safety will be improved. The measurement and assessment of running safety is necessary for safety especially for the vehicles newly developed and started service. Therefore measurement of derailment coefficient is most important thing to secure running safety. In this paper, we examined new assessment method which could estimate derailment coefficient by measuring vibration acceleration and displacement of vehicle operating at actual track irrespective of time and place. The new method could be used effectively as a mean confirming running safety.

• Proceedings of the KSR Conference
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• 2009.05a
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• pp.713-720
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• 2009

The development goals of the next generation EMU are to improve the system maintainability, transportation capacity, reliability, passenger service and energy efficiency. In this paper, we propose a measurement scheme for the development goals of the next generation Electric Multiple Unit(EMU). To achieve that, we drew meaningful characteristics for each development goal, which mainly affect effectiveness and performance of vehicle system. Finally, the measurement scheme for the development is obtained by using the characteristics, which could be a numerical values such as maximum velocity, acceleration of the vehicle and so on or subjective values such as a results of surveys from passengers and so on. We expect the proposed measurement scheme will be used to measure the development goals of other similar system as well as the next generation EMU.

• Journal of Navigation and Port Research
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• v.32 no.2
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• pp.141-148
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• 2008

This paper is structured into three main parts and a conclusion. The main section provide definitions of efficiency, effectiveness and performance in terms of the distribution channel, followed by a review of related performance measurement, before discussing difficulties of measurement. According to the theoretical approach, it appears that key theroretical issues are centered around customer service, logistics excellence, time compression, the use of IT, and a move towards integrated logistics. The empirical approach shows that in the past, various financial performance indicators were regarded as relevant management information. However, today, management needs additional performance indicators. Therefore, external assessments of effectiveness must be performed to measure customers' satisfaction with the physical flow of product through the distribution channel network. So, what is needed is to take previous normative and explorative research and progress through a framework by developing valid measures of distribution channel's effectiveness and efficiency, and identifying research methodologies suited to the data collection requirements.

• Journal of the Korean Society for information Management
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• v.22 no.3 s.57
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• pp.147-162
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• 2005

This study aims to suggest a new approach to economic valuation of the special library, in response to the necessity of economic justification of the special library operated by firms and research institutes. Benefit measurement elements and analysis methods to be used in the study were derived through feasibility evaluation on models in previous studies, and objectivity and applicability were the criteria for feasibility evaluation. Depending on which type of resources are used in providing service, different benefit measurement elements and methods were applied. Based on this, calculation formula for service valuation of special library was presented. The development of analysis model for economic valuation of special library made it possible to objectively prove the value of the special library, and is considered to provide an opportunity to publicize the real value of the special library.

• Journal of the Korean Society for Marine Environment & Energy
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• v.14 no.3
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• pp.192-204
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• 2011

With the international increasing of the important of oceanic researches related to climate changes, resources conservation and development and the advanced application of oceanic researches, advanced countries in ocean have developed the systematic management systems for oceanographic instruments. Despite the increasing realization of need for the establishment of management system, no systematic management system has been built in KOREA. There is an ungently need to construct the efficient and professional maintenance and management system of oceanographic instruments that are extremely expensive for meeting the increasing demands of oceanographic observation and investigation. In this paper, the present possession of oceanographic instruments in KOREA and the need for the establishment of management systems for oceanographic instruments are discussed. In addition, we introduce the total management system for oceanographic instruments using a RFID(Radio Frequency IDentification) at KORDI and discuss the necessity of the introduction and establishment for producing high quality data in oceanic researches.

• Culinary science and hospitality research
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• v.7 no.3
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• pp.13-34
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• 2001

The case which it contracts with the dynamic result measurement system when actual outsourcing evaluation measurement is composed and then one result standard between the service supplier and the user is set, which owns jointly the expense which is reduced from that or the benefit which is created from that is increasing In the conclusion, for outsourcing management strategy of domestic foodservice industry in order to succeed, first it is accurate and examined that for what and how outsourcing should be introduced and as a result, what kind of result can be raised from that result\ulcorner Food service industry should be outsourced if you want to make more many investment in better humane resources, food & beverage-goods-security and education to provide eating-out service out of various business in food industry. When considering the actuality of the domestic foodservice industry that time it is appropriate, it sees. The foreign-brand goods which is introduced in the country are being executing in the 1ink of part management strategy. One of the most influential factor of domestic foodservice industry's management pressure is overspent management expenses, Does the namely expenses preparation effect reach which degree\ulcorner what kind of method can most decrease these expenses\ulcorner Doing grows the success and failure of the Korean foodservice industry controls result with the fact that it will operate with a big variable sees. The background which the domestic foodservice industry should introduce inevitably the outsiurcing system is to develop continuously nation foodservice industry in the way of cost curtailment of food-material, a labor cost curtailment with efficient application and synergic effect like specialty manpower utilization. The kindred competitive enterprises gradually concentrate management resource to the point ability from the present point of view which is increasing and a strategy position they secure, to prepare a competitive power, what sees it is important national industry must prepare a new paradigm. It is important to measure the result based on sales accomplishment in operation system dimension, and it is more important to appropriately apply regard of the evaluation measurement