• Journal of Institute of Control, Robotics and Systems
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• v.13 no.2
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• pp.108-113
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• 2007

The robot introduced in this paper is the Fire-Extinguishing Rescue Robot for indoor work which is considered to be a part of the Operation for Future Developmental Power. It is briefly introduced about the background of how we began this project, our goals, where we are today and what we would like to achieve from now on. Main contents include introduction to the equipments for Fire-Extinguishing Rescue robots that have been developed in advanced countries and the compositional concept of the developmental process, the GUI schematic, searching methods for fire inside a house, mechanical schematic and the present conditions of how the core technologies are developing through.

• Journal of Families and Better Life
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• v.7 no.1
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• pp.43-57
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• 1989

In the materialistic societies, individuals get money return according to the importance of their roles. But unlike wage workers who are engaged in market production , housewives engaged in home production do not get that return. It is because the result of home production is not transacted in the market and the price is not given to it, so the value of home production is not estimated. Hence this study trcognizes again the value of home production, suggests the estimation methods of it in input and output based on home production systems and attempts to actualize those methods socially. This home production develops the human attributes of family members to act as a member of a society and potentially contributes to home income and Gross National Products, so it has social and economic value. In spite of that significance, the value of home production is not estimated, so its nor recognized and housewives engaged in home production are not acknowledged their ability. Hence based on home production systems form input to output, this study suggested opportunity cost method and market cost method in input, method by saving money expenditure, hybrid method and method by comparing with market in output.

• Advances in pediatric surgery
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• v.9 no.2
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• pp.121-124
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• 2003

Diffuse cavernous hemangioma of the rectosigmoid is a rare lesion usually presented in children and young adult, often with life threatening hemorrhage. The clinical diagnosis is difficult and often delayed because of lack of awareness of the clinical features. We report a case of diffuse cavernous hemangioma of the rectosigmoid in a 12 year old boy who had undergone suture ligation under the impression of hemorrhoid at his age 3. Sphincter saving coloanal pull through procedure were applied as the surgical treatment. Sclerotherapy was needed with recurrent rectal bleeding 6 months after the pull through operation. The patient is well at 12 months follow-up.

• Proceedings of the KIPE Conference
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• 1998.07a
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• pp.466-469
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• 1998

The electronic fluorescent lamp ballast can promote the lighting efficiency up to 10-20% by driving high frequency with frequency transformation technique, and can completely eliminate the flickering phenomenon occurring from 60Hz frequency. The electronic ballast provides very high energy saving effects for it has high power fact than traditional ballast, and it is convenient to use. can extend the life of fluorescent lamp for it starts at once by driving with high frequency. However electronic ballast needs high price, and it can reduce the stability and reliability. This paper provides illumination systems which drive dozens of fluorescent lamps at the same time, to overcome these shortcomings of electronic ballast and utilize the advantage of electronic ballast.

• Proceedings of the KIPE Conference
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• 1998.10a
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• pp.998-1002
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• 1998

The electronic fluorescent lamp ballast can promote the lighting efficiency up to 10-20% by driving high frequency with frequency transformation technique, and can completely eliminate the flickering phenomenon occurring from 60Hz frequency. The electronic ballast provides very high energy saving effects for it has high power factor than traditional ballast, and it is convenient to use, can extend the life cycle of fluorescent lamp for it starts at once by driving with high frequency. However electronic ballast needs high price, and it has the bad stability and reliability. This paper provides illumination systems, which drive dozens of fluorescent lamps at the same time, to overcome these shortcomings of electronic ballast and utilize the advantage of electronic ballast.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2012.05a
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• pp.21-23
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• 2012

The process of building project for planning, designing, construction, maintenance, and waste disposal are related with each other. However, we have a difficulty for estimating building's LCC due not to be flexible each other. Therefore, we analyzed the boundary condition between the process of construction and maintenance, and analyzed the factor of segment. We also suggested the Link System for flexible relation.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.863-866
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• 2005

Low-power design is one of the most important challenges encountered in maximizing battery life in portable devices as well as saving energy during system operation. In this paper we propose a low-power DCT (Discrete Cosine Transform) architecture using a modified Computation Sharing Multiplication (CSHM). The overall rate of power consume is reduced during DCT: the proposed architecture does not perform arithmetic operations on unnecessary bits during the Computation Sharing Multiplication calculations. Experimental results show that it is possible to reduce power dissipation up to about $7{\sim}8%$ without compromising the final DCT results. The proposed lowpower DCT architecture can be applied to consumer electronics as well as portable multimedia systems requiring high throughput and low-power.

• Journal of Chest Surgery
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• v.19 no.3
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• pp.470-474
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• 1986

In the treatment of the acute respiratory failure, ventilatory support with endotracheal intubation or tracheostomy is a life saving procedure in many cases but the development of postintubation tracheal stenosis is a very serious complication. Recently we have experienced one case of postintubation tracheal stenosis which occurred in the region of cuff site. Preoperative tracheogram showed a concentric stricture 3.0 cm in length located 4.0 cm proximal to the carina. Under the general anesthesia, the stenotic segment was resected and end-to-end anastomosis was performed successfully through the right posterolateral thoractomy. Her postoperative course was uneventful and the patient has remained well till now.

• Journal of Chest Surgery
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• v.21 no.1
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• pp.121-130
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• 1988

During one year period from Sep. 1986 to Sep. 1987, we have experienced 6 cases of infective endocarditis requiring surgical interventions. All 6 patients had class IV or V cardiac disability at the time of surgery. The indication for surgery was rapidly progressive congestive heart failure in all cases. Four patients underwent aortic valve replacement including one double valve replacement. Two other patients required other surgical procedures, removal of large left atrial vegetation mass in one patient and excision of destroyed pulmonary valve and aortic vegetation in the other patient. Two patients died; one of mitral annulus rupture after release of aortic clamp and the other of mediastinal bleeding 3 months after replacement of aortic valve. Three out of 4 survivors are in NYHA Class I and the remaining patient is in Class II. We emphasize that early operative intervention is life-saving in patients with persistent or progressive congestive heart failure, irrespective of the activity of the infective process or the duration of antibiotic therapy.

• Journal of Korea Society of Digital Industry and Information Management
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• v.4 no.1
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• pp.9-16
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• 2008

This paper presents a frequency selection algorithm for minimization power consumption of processor in Mobile System. The proposed algorithm has processor designed low power processor using clock gating method. Clock gating method has improved the power dissipation by control main clock through the bus which is embedded clock block applying the method of clock gating. Proposed method has compared power consumption considered the dynamic power for processor, selected frequency has considered energy gain and energy consumption for designed processor. Or reduced power consumption with decreased processor speed using slack time. This technique has improved the life time of the mobile systems by clock gating method, considered energy and using slack time. As an results, the proposed algorithm reduce average power saving up to 4% comparing to not apply processor in mobile system.