• 한국가구학회지
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• 제16권2호
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• pp.59-65
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• 2005

As physical condition of students improves, there is a need to develop human body-friendly desk and chair for students. In this study, desks and chairs were manufactured with curved veneer lamination under high frequency heating and pressing, using ten wood species such as Japanese red pine, Korean pine, pitch pine, Japanese larch, yellow poplar, black locust, oak, radiata pine, beech, and birch. The performance of these products were evaluated. The results obtained were summarized as follows; With high frequency heating, the turned lamination of veneers with full size sheet ($3{\times}6\;feet$) prepared by rotary lathe peeling was successfully applied for making the members of desk top, leg frames of desk and chair. Bending strengths of desk tops were relatively greater for yellow poplar, black locust and red pine, which were similar to those of beech and birch. Bending strengths of desk legs were classified into greater species group (red pine, yellow poplar, larch) and lower species group (radiata pine, Korean pine, pitch pine). Compressive strengths of chair legs in parallel direction to the lamination were greater in black locust and larch. On the other hand, differences between outer and inner gap at the top and drawer bottom of desk top were rather larger for the laminations of birch and beech, and less for those of yellow poplar and pitch pine, showing greater stability of open drawer space. In results, yellow poplar, larch, pitch pine and red pine showed good appearance and strength properties at the curved veneer lamination. Accordingly, it was believed that these domestic woods were able to substitute for birch which was being imported for the use of veneer-laminates type furniture.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2007년도 하계학술대회 논문집
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• pp.343-346
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• 2007

Recently, many nations have released standard such as EN61000-3-2 to impose a limit on the harmonic current to prevent distortion of AC line and to save energy. Also, the limit on the harmonic current makes use of a trade barrier. Therefore, Power factor correction must have been suitable for a limit on the harmonic current. This paper presents AC servo motor drive to have merits of high power factor for Desk-Top Robot.

• Asian-Australasian Journal of Animal Sciences
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• 제12권8호
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• pp.1171-1176
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• 1999

The precision and reliability of the Computer Image Analysis technique using a desk top computer for extracting information from carcass cross section scans was evaluated by the repeatability (R) and coefficient of variation (CV) for error variance. The 6th and 7th ribs cross section of carcasses from 55 fattened Japanese Black steers were used. The image analysis was conducted using a desk top computer (Macintosh-Apple Vision 1710 Display) connected to a scanner and an image capture camera. Two software applications, Adobe Photoshop and Mac Scope were used interchangeably. The information extracted and measured were individual muscle area, circumference length, long and short axes lengths, muscle direction; distance between any two muscle centers of gravity; cross section total area, lean, fat, and bone. The information was extracted after the processes of scanning, digitization, masking, muscle separation, and binarization. When using the Computer Image Analysis technique by desk top computer, proper digitization and selection of scanning resolution are very important in order to obtain accurate information. The R-values for muscle area, circumference, long and axes lengths, and direction ranged from 0.95 to 0.99, whereas those of the distance between any two muscle centers of gravity ranged from 0.96 to 0.99, respectively. For the cross section total area, lean, fat, and bone it ranged from 0.83 to 0.99. Excellent repeatability measurements were observed for muscle direction and distance between any two muscle centers of gravity. The results indicate that the Computer Image Analysis technique using a desk top computer for extracting information from carcass cross section is reliable and has high precision.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2007년도 추계학술대회 논문집
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• pp.291-292
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• 2007

• 한국항해항만학회지
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• 제35권2호
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• pp.113-119
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• 2011

This paper is a part of the development on the safe navigation model of tugs and barges in Korea waters. desk-top tug-barge simulator is to train the crew of tugs and barges, especially tugs' crew. It is connected with steering and engine telegraph console and winch control console, and can describe three types of operation mode for a tug-barge working unit, towing mode, side by side and push mode. It can also record and assess each simulation run. The evaluation module can confirm the result of a finished simulation run and help trainees to find and correct their faults, and it is composed of result evaluation and process evaluation.

• 전기의세계
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• 제39권7호
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• pp.5-6
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• 1990

• 한국정보통신학회논문지
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• 제2권2호
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• pp.169-180
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• 1998

본 논문에서는 데스크탑 회의시스템 지원을 위해 메시지 처리 시스템에서 실시간 서비스 프리미티브를 개발한다. 데스크탑 회의시스템은 대표적인 실시간 그룹통신 서비스중의 하나이다. 현대 조직 사회에서는 조직의 작업 대부분이 서로간의 헙동체제로 처리됨에 따라 조직원간의 통신을 효율적으로 지원하기 위해 실시간 그룹통신에 대한 요구가 점차 증가되고 있다. 현재까지 다양한 형태의 실시간 그룹통신 시스템이 개발되었지만 널리 사용되는 시스템은 드문 실정이다. 이러한 실시간 그룹통신 시스템의 확산을 막는 걸림돌은 사용자가 보다 쉽게 접할 수 있는 보편적인 실시간 그룹정보 전송환경의 부재에 기인한다. 분산사무환경에서 정보교환 서비스로 가장 널리 사용되고 있는 메시지 처리 시스템은 표준화된 정보전송 체계를 제공하며 다른 응용 프로토콜과의 연동시 유용하게 이용될 수 있는 특징을 가지고 있다. 따라서 본 논문에서는 실시간 그룹통신지원을 위해 메시지 처리 시스템을 이용하는 방안을 제시하고자 한다. 즉, 메시지 처리 시스템에서 실시간 그룹정보를 효율적으로 관리하고 실시간 전송을 지원하는 서비스 프리미티브를 제안한다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회A
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• pp.1271-1276
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• 2007

The most powerful analytical equipment usually comes at the cost of having the highest demand for space. Where electron microscopes has traditionally required a room to themselves, not just for reasons of their size but because of ancillary demands for pipes and service. The simple optical microscopes, of course, can occupy the desk-top, but because their performance is limited by the wavelength of light, their powers of magnification and resolution are inferior to that of the electron microscope. Mini SEM will sit comfortably on a desk-top but offers magnification and resolution performances much closer to that of a standard SEM. This new technique extends the scope of SEM as a high-resolution microscope, relatively cheap and widely available imaging tool, for a wider variety of samples.

• 한국정밀공학회지
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• 제19권10호
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• pp.7-14
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• 2002

• Journal of the Korean Wood Science and Technology
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• 제30권4호
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• pp.106-113
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• 2002

폐기 목질재료를 사용하여 학생용 책상 천판의 성형시 각 제조조건에 따른 천판의 성능을 검토하였다. 책상 천판의 파티클 구성은 고운 파티클과 거친 파티클을 적절히 혼합한 것이 고운 파티클이나 거친 파티클만으로 제조한 것보다는 전체적으로 성능이 양호하였으며, 특히 표층에는 고운 파티클을 중충에는 거친 파티클을 구성하는 것이 표면 마감성이 가장 우수하였다. 그리고 밀도가 높을수록 박리강도, 휨 강도는 우수하나, 흡수두께 팽창율은 증가하였으며, 수지 도포량이 많을수록 박리강도, 흡수두께 팽창율은 양호하나, 포름알데히드의 방출량은 높았다. 가압온도는 높을수록 대부분의 성능이 향상되었으며, 190℃가 가장 적절하였다. 가압시간은 1단계 2분과 2단계 2분이 비교적 양호하나 2단계의 가압시간을 1분으로 단축하여도 성능에는 큰 문제가 없어 앞으로 생산성의 향상을 기대할 수 있을 것으로 생각된다.