• Journal of the Korea Safety Management & Science
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• v.8 no.2
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• pp.129-138
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• 2006

Since IMF system was introduced once, downsizing has been usual phenomenon in business sphere. Downsizing influences the unemployed, and also the survivors such as in job stress, communication bias, lower organizational commitment and so on. This paper reviewed the relationship between organizational commitment and service quality, and the moderating effect of sex in hotel. Based on the responses from 494 hotel employees, the results of multiple regressional analysis showed that affective OC and normative OC have affirmative effects on service quality. The results of moderating analysis showed that continuance OC has an affirmative interactive-effect on responsiveness, assurance, and empathy with gender, and affective OC an negative interactive-effect on assurance.

• Proceedings of the Korean Society for Information Management Conference
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• 1995.08a
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• pp.59-62
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• 1995

다운사이징이론은 1990년대 등장한 개념으로 가격 대비 컴퓨터 성능의 향상, 분산 네트워크 기술의 발전, 개방형 시스템 환경, 클라이언트/서버방식 확산 등으로 다운사이징 정보시스템을 구축할 수 있는 기술적 환경이 조성되었다고 할 수 있다. 본 연구는 정보시스템 구축방법의 하나인 다운사이징을 이용하여 도서관 정보시스템 구축방법에 관한 연구이다. 기존의 중앙집중식 정보시스템이 가지고 있는 문제점을 살펴보고, 이러한 문제를 해결하기 위한 방법으로 다운사이징 기법을 이용하여 정보시스템의 새로운 모델 설계와 구현을 통해 다운사이징 도서관 정보시스템의 개념적 기초를 마련하는 것이다.

• Journal of Drive and Control
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• v.13 no.1
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• pp.10-17
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• 2016

e-4WD(Electric-4WD) system is a 4WD(4-Wheel Drive) System that can transform a car into a Hybrid System. e-4WD consists of a Motor, Inverter, Speed reducer and Clutch. The Motor, Speed reducer and Clutch are installed on the rear sub-frame as a chassis module type. The inverter is installed separately. Compared to a mechanical 4WD, the e-4WD system has many advantages. For example, the reduced number of drivetrain components makes better use of the space. Driving with a motor only at low speed improves fuel economy and reduces exhaust gas. Engine downsizing is available because the motor assists the engine. The performance of a conventional HEV(Hybrid Electric Vehicle) system can also be maintained. This paper proposes the specifications of components and the control logic for an e-4WD System. And the effect of the e-4WD system is proven using a test vehicle equipped with components under various test conditions.

• Proceedings of the Korea Association of Information Systems Conference
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• 1997.10a
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• pp.249-249
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• 1997

최근에 등장한 ERP system은 전사 자원을 통합 관리하여 생산성과 효율성을 크게 향상시켜 줄뿐만 아니라, package로 되어 있어 단기간에 system을 구축할 수 있게 해준다 는 측면에서 획기적인 system으로 많은 기업들의 주목을 받고 있다. ERP 뇬?은 C/S system으로의 downsizing, networking, internet/intranet, BPR의 수행, EIS 등 최근의 정보 기술을 망라하고 있기 때문이다. 그러나 module화된 package를 도입하기 위해서는 process를 package에 맞추어 줘야 하므로 필연적으로 BPR이 따르며 실제 도입사례를 보 더라도 system에 들어간 직접비용보다 표준화를 포함한 process 설계에 투자된 노력이 훨 씬 더 많다. 이제까지의 경험으로 볼 때, BPR은 성공보다 실패 확률이 더 높다. BPR의 실 패는 ERP system 도입에 치명적이다. BPR이 지금처럼 실패를 거듭한다면 ERP 또한 많은 장점에도 불구하고 성공하기 어렵다고 하겠다. 따라서 본 연구에서는 성공적인 ERP 도입을 위한 전제조건으로서의 process 재설계를 가로막는 요인은 무엇이며, 이를 극복하기 위한 대안으로서의 전략은 어떠해야 하는지 제시하고자 한다.

• Korean Management Science Review
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• v.17 no.2
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• pp.97-113
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• 2000

The introduction of client server systems raises some serious IS control concerns. Although client server systems increase system flexibility and compatibility, and facilitates system downsizing and process restructuring, multiple operating systems, database management systems, and platforms of client-server system increase th potential exposures and risks of the system. It is needed to recommend the effective control framework to mitigate risks. This paper suggests risks and control framework for client server system. The results of two case studies indicate that program and database management are important as program and data should be located and maintained in client and servers. It becomes difficult to manage divided programs and data logic that are distributed across clients and servers that have different platforms. The case studies of two banks show that the extent of distribution of program and data logic affects the importance of program and database management controls.

• The Transactions of the Korea Information Processing Society
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• v.4 no.11
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• pp.2651-2661
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• 1997

We can get very enhanced performance in case of adding the TP monitor to the on_line transaction processing system rather than just using the DBMS. Futhermore, It is getting boomed to establish a OLTP system with the TP monitor. We designed and implemented a distributed processing system with the TP monitor focused quick response time and expansionality and basic the ACID of transaction. In this paper, We explain the implementation about downsizing and upon distributed system and verified of performance.

• Journal of Advanced Engineering and Technology
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• v.10 no.2
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• pp.203-208
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• 2017

Due to global climate change issues, there is a growing demand for systems throughout the industry. In the case of power conversion, studies have been actively conducted to change the structure of the power conversion circuit and to apply new power devices. In particular, the WBG (Wide Band Gap), which is newly emerged device in the market for developing semiconductor technology, has demonstrated advantages in applying for various aspects in comparison to the existing Si (Silicon) Semiconductor. Recent research centers in the railway industry are focusing on developing technologies suitable for railway vehicles by utilizing these new developments in railway countries such as Japan and Europe. This paper researches the WBG device that is applicable to the auxiliary power supplies (APS) in railway system, and analyzes the downsizing effects to APS in high-speed railway by conducting a theoretical analysis and simulation.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.11 no.3
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• pp.301-312
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• 1999

Experiments were carried out to evaluate performance of the cold air distribution systems with an ice storage tank in test room. Cold air distribution systems provide primary air for comfort conditioning or process cooling at coil discharge temperatures$4^{\circ}C$ to$11^{\circ}C$. The application of a cold air distribution system allows for the downsizing of air distribution equipment and central plant equipment when ice storage tank is used. The benefit of a cold air distribution system include a decrease in the floor-to-floor height, increase floor space, reduced building capital costs, reduced energy use and demand. The use of cold air distribution can result in the most cost effective system and is currently being implemented world wise as the new standard in air conditioning systems. In this study, the cold air distribution system is compared with the general ice storage system. Under the same cooling load conditions, experimental results show that the supply air volume of cold air distribution system decrease 38%, and decrease 45% flow rate of brine for the general ice storage system.

• Journal of Auto-vehicle Safety Association
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• v.12 no.2
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• pp.7-13
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• 2020

Recently, there is a big issue of downsizing on brake system according to fuel efficiency and regenerative braking cooperation control. Especially, small cars have improved in a variety ways such as electric vehicle and smart car compared to previous small cars. So, small brake system is strongly required in the car industry. A new small brake system for light compact vehicles was proposed in this paper. For this system, the solid type disc and caliper were newly developed. And the important design factors were considered to reduce brake size. First, we calculated the temperature rise of disc through heat capacity formula and CAE analysis. Second, we analyzed the housing and carrier stiffness of caliper to select the reasonable condition. Finally, the superiorities of the developed brake system were verified by heat capacity, consumption liquid level, braking feeling, judder, wear test and regenerative braking cooperation control analysis. A developed brake system is expected to be useful for brake system of light compact platform.

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.129.1-129.1
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• 2010

Since the commencement of the fuel cell business in 2007, POSCO POWER has been the major supplier of the MCFC (Molten Carbonate Fuel Cell), which is the most commercialized stationary fuel cell system in the world. With its quite, yet active movement, more than 20MW MCFC systems have been installed and are operating in Korea. While trying to localize the components and set up a firm supply chain in Korea to provide more reliable and cost-competitive products to its customers, POSCO POWER is also devoting itself to developing new MCFC application products. One such product is a back-up power system, in which a back-up algorithm is embedded to the present system so that the product can work as a back-up generator in case of grid failure. The technology to enhance load following capability of a stack module is also being developed with the back-up algorithm. Another example is a building application, the goal being to make the present Sub-MW product suitable for urban area. For this, downsizing and modularization are the main R&D scope. The project for developing ship service fuel cell for APU application will launch soon as well. In the project, a system which can operate in marine environment, and reforming technology for liquid logistic fuel will be developed.