• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 G
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• pp.2983-2985
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• 1999

This paper presents the attitude control of the double inverted pendulum with compliant joint. The biped robot with compliant ankle joint instead of a motor have a good contact between it's sole and ground in the uneven ground. The compliant ankle joint proposed here is composed of springs and mechanical constraint. The lower link is hinged on the plate to free for rotation in the vertical plate. The upper link is connected to the lower link through a DC motor. The DC motor is used to control the posture of the pendulum by adjusting the position of the upper link. The algorithm for controlling a proposed inverted pendulum is nonlinear feedback controller. Simulation with mathematical model are conducted to show the validity of the proposed controller.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 B
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• pp.689-691
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• 1996

Our country, is still suffering from much work outage, nearly 80% of total outage time, in 22.9kV-Y multi-grounded distribution lines. Therefore, KEPCO which is the sole utility owned by the Korean government ms developed outage-free work techniques to improve the reliability of power supply in Our country. This paper is to introduce the developing process and good effects of outage-free work techniques, and the equipment developed and applied in Our country. This paper will aid many utilities to try to reduce the work outage.

• 한국의류학회지
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• 제24권2호
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• pp.185-191
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• 2000

This survey was carried out to clarify the consumers' behavior related the purchase and use of women's dress shoes. The subjects participated in this study were 386 Korean women. Their age were ranged from 18 to 86 years. The results of this study were as following; 1. The most popular women's dress shoe sizes were 235 and 240. 2. 82.6% of subjects had experienced uncomfortable fit when they wore dress shoes. 3. The subjects aged over 30 years preferred low heel shoes. They valued wearing comfort above fashion trend in shoe design consideration. 4. The subjects aged under 30 years gave more emphasis on fashion trend than comfort and fit when they purchase dress shoes. 5. Consumer's experience of unfit with dress shoes was different with age. The younger subjects complained improper bottom sole shape. The older subjects had experience of unfit with outshell design and material. The subjects aged over 60 years thought that their dress shoe design was too narrow at the toe and lack for flexiblity of shoe material.

• 한국염색가공학회지
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• 제17권6호
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• pp.36-41
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• 2005

The effects of low temperature plasma treatment on the properties of three types of foams, polyurethane(PU), injection phylon(IP), and phylon(PH) that used for footwear mid-sole were examined. The change of surface properties of foams were characterized by electron scanning microscope, contact angle measurement, and universal testing machine. Adhesion was tested by T-peel tests of plasma treated foams/polyurethane adhesive joints. The contact angle of three types of foams were decreased dramatically with the plasma treatment time, specifically noticeable in the case of phylon(Ph). It has shown the relationship with the contact angle of phylon(PH) and the distance between electrode and samples. The peel strength of foams were increased with the increase of plasma treatment time.

• Journal of Microbiology and Biotechnology
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• 제15권1호
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• pp.86-90
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• 2005

Strain M-18 was isolated from the rhizosphere soil of sweet melon, using 1-aminocyclopropane-1-carboxylate (ACC) as a sole nitrogen source. Its phenotypic characteristics, metabolic tests, and 16S rDNA sequence were analyzed. The antibiotics secreted by strain M-18 were determined to be phenazine 1-carboxylic acid and pyoluteorin. These data showed that strain M-18 was a new fluorescent Pseudomonas strain that produced both phenazine 1-carboxylic acid and pyoluteorin, some features being similar to Pseudomonas aeruginosa and Pseudomonas fluorescens. Therefore, the strain M-18 appears to be the first pseudomonad described to date that is capable of producing both phenazine 1-carboxylic acid and pyoluteorin.

• Industrial Engineering and Management Systems
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• 제13권2호
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• pp.118-128
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• 2014

This study examines how green operations affect firm's environmental performance with green innovation as a mediator in the context of electronic industry. We carry out an empirical study with 141 valid questionnaires collected from high-tech manaufactures in Taiwan. The results show that positive relationships exist among green operations, green innovation and environmental performance (in both operational performance and managerial performance). However, an integration of green operations with green innovation would influence firm's environmental performance more positively than the sole effects of green operations. It suggests that high-tech manufacturers should pay greater attention to green innovative strategies in order to cope with customer demand and, thereby, enhancing customer satisfaction and sustainable operations. This study has contributed to the extant literature by providing valuable academic references and pragmatic guidelines for firms to gain competitive advantages through green operations and green innovation.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 춘계학술대회
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• pp.612-613
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• 2010

The common image processing method treat the image as the array of pixels, and every pixel with its eight neighbors who directly around it form a square neighbor domain, sometimes may be more than that such as $5{\times}5$, or $7{\times}7$, and then adopt the convolution and template for every possible pixel value and then divide a attenuation factor, restrict the result in the area between 0 and 255, while the original and processed value record respectively. During the whole procedure, the result sole exist and represent the processing without changing the original pixel.

• 전력전자학회논문지
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• 제19권4호
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• pp.349-356
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• 2014

As the turns ratio of the tapped-inductor contributes to the step-up ratio, the tapped-inductor boost (TIB) converter has significantly increased level of difficulties in its analysis and design compared to the conventional boost converter where the duty ratio is the sole factor affecting the step-up ratio. In this paper, the operation of the continuous current mode TIB converter is briefly reviewed, the characteristics are analyzed in detail, and a design guideline optimizing the loss in the tapped-inductor is presented with a practical design example. Finally, experimental results from a 12V/120V prototype for 0.25A LED driver application are also presented to confirm the design.

• 한국실내디자인학회논문집
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• 제15권1호
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• pp.158-165
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• 2006

The space of leisure boats & yachts is formed by interior design elements and shapes are formed by combination of those elements. By means of configuration of the design elements, space is made in a ship and patterns in an inside space are made through production. These space can be categorized as (1) cabin(common cabin, staterooms, one-cabin), (2) salon, (3) galleys & dinette, (4) heads(showers, toilets, bidets, sinks), (5) cockpit, (6) wheelhouses, navigation stations, (7) fore peaks, (8) engine room, (9) deck etc. Interior materials are classified into (1) walls(bulkheads & lining wall), (2) floors(sole), (3) ceilings(overheads), (4) doors & windows, (5) furniture, (6) lightings and (7) Hardware & decoration in large, medium and small sizes, which constitute interior design elements of a leisure boat & yacht. The materials used in leisure boats & yachts have properties of lightweight, noise and vibration resistance, fire & flame retardant, stability, strengths, lifespan, appearance and special operation in construction.

• Nuclear Engineering and Technology
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• 제48권2호
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• pp.559-571
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• 2016

This paper studies the feasibility of renewable energy as a substitute for nuclear and energy by considering Korean customers' willingness to pay (WTP). For this analysis, we use the contingent valuation method to estimate the WTP of renewable energy, and then estimate its value using ordered logistic regression. To replace nuclear power and fossil energy with renewable energy in Korea, an average household is willing to pay an additional 102,388 Korean Won (KRW) per month (approx. US $85). Therefore, the yearly economic value of renewable energy in Korea is about 19.3 trillion KRW (approx. US $16.1 billion). Considering that power generation with only renewable energy would cost an additional 35 trillion KRW per year, it is economically infeasible for renewable energy to be the sole method of low-carbon energy generation in Korea.