• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.893-895
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• 2012

The rapid spread of Internet and network technology advances the current USN (Ubiquitous Sensor Network) in order to realize research is taking place. USN individual sensor information of the sensor nodes to provide the service is equipped with various kinds of sensors. To do this, you can use a service unspecified XML-based Web services to leverage in the standardized data representation language is needed. In this paper, the required sensor information expressed in a standardized form for USN application service was designed in the sensor data representation language. The USN-based technologies and services in the field will be utilized to activate.

• Journal of Digital Contents Society
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• v.14 no.4
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• pp.411-417
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• 2013

Two-dimensional image processing method and tools Rigi then developed a report prepared by a variety of video and three-dimensional images are increasing demands for navigation. The hard part to experience in the real world experience in the virtual environment, and has the purpose to take advantage of. This is a system that provides a simple 3D background, but everyday actions that can control the system with the needs of an instinctive interface technology means. The purpose of this study a variety of human behavior using the Kinect device in action close to the three-dimensional technology to develop a new navigation control is Kinect Holography and 3D images using the input data so that you have the linkage is to design the system.

• Journal of the Korean Society for Heat Treatment
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• v.31 no.6
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• pp.290-299
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• 2018

The microstructure of a newly developed alloy tool steel (KV1) for casting cold-work press dies was analyzed using advanced scanning electron microscopy. Its mechanical properties and durability in use as piercing inserts were tested. It contained a continuous network structure which originated from the micro-segregation during solidification and was composed of retained austenite and primary carbides. However, after quenching and tempering, its continuity was destroyed due to the decomposition of austenite. The discontinuous spatial distribution and the smaller amount of primary carbide in the network presented KV1 enhanced ductility compared to the common alloy (HK700). The reduced C and Cr, the addition of V resulted in a small amount of primary carbides which primarily consisted of MC, as well as fine and uniform dispersion of precipitates. Owing to these features, KV1 exhibited delayed initiation of chipping when used for piercing inserts.

• Journal of Korea Foundry Society
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• v.35 no.4
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• pp.88-98
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• 2015

The effects of quenching and tempering temperatures on the tensile, impact and corrosion properties of A487 alloy cast with different C contents of 0.16, 0.19 to 0.23 wt.% were examined. The impact tests were conducted at $25^{\circ}C$ and $-60^{\circ}C$ and the immersion test was performed using 3.5% NaCl solution for 14 days. The quenching temperature affected the mechanical properties of A487 alloy cast, while the magnitude of change varied depending on the C content. The increase in tempering temperature showed the typical trend of decreasing tensile strength and increasing impact properties. The change in quenching and tempering temperature in this study did not affect the corrosion properties of A487 alloy significantly. The change in mechanical and corrosion properties of A487 with different C contents was discussed based on the microstructural and fractographic observation.

• Resources Recycling
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• v.12 no.6
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• pp.64-70
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• 2003

China is in the midst of readiness for the jump of the IT industry. It is generally esteemed in business circles that China will step up to the level which can be called the strong country of IT in the aspect of quality as well as the expansion of quantity China has put in operation the supporting policies of IT industry altogether through 'The 10th 5-year plan' which has begun since 2001 keeping pace with it, we are going to find out the desirable directions which we head for by looking into the present situation and policies for the development of Jung-kyung, where 'The master plan of the western development' is now Per-forming to balance the big economic disparity in the eastern and western areas.

• Korean Journal of Bronchoesophagology
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• v.8 no.2
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• pp.56-60
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• 2002

Actinomycosis is a chronic infectious disease, which is produced by Gram-positive anaerobic organisms, actinomycetes, normally inhabit in the mouth, bowel and female genital tract. Primary endobronchial actinomycosis is relatively rare infection and can be misdiagnosed as endobronchial tuberculosis or malignancies. We experienced a case of primary endobronchial actinomycosis in a 49-year-old man presented with fifteen-days history of hemoptysis and cough. He had a past history of extraction of teeth because of dental caries six months ago. Chest X-ray showed irregular consolidation ad bronchoscopic findings revealed nearly obstruction by tumor mass with active bleeding in RLL. Pathologic finding of the bronchial mass showed sulfur granule with granulation tissue formation. Intravenous administration of penicillin G followed by oral ampicillin therapy for 6 months resulted in marked improvement in symptoms and chest X-ray findings. We report this case with review of literature.

• Journal of Korea Foundry Society
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• v.12 no.2
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• pp.125-130
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• 1992

1991년 현재 우리나라에는 45개의 정밀주조공장이 있는 것으로 조사되었으나, 실제 가동중인업체는 31개사 정도였다. 이들의 90년도 총 생산량은 몰드수로는 79, 980mold로 총 6,108ton을 생산하였고, 여기에 종사하는 종업원수는 1,465명이었다. 업체의 지역별 분포를 보면, 경인, 경북, 경남의 대도시 권역을 중심으로 분포하고 있고, 특히 경인지방을 중심으로 한 수도권에 전체 업체의 58%가 분포되어 있다. 기업 연령은 10년 이상의 업체가 5개사 정도이고, 전체의 74%가 5년 이하로 기업역사가 일천한 편이다. 생산규모 면에서 월산 5,000mo1d 이상의 업체는 5개사 정도 있지만, 전체의 45% 정도는 2,000mo1d이하의 소규모 공장이다. 종업원 규모는 $20{\sim}50$인인 업체가 전체의 45%로 가장 많았으며, 50인 이하가 71%를 차지하고 있다. 생산 재질별로는 주강 및 특수강 제품이 주종을 이루며, 일부 업체가 알루미늄 및 동합금을 생산하고 있다. 금번조사에서 제품의 품목별 생산에 대한 통계는 수집되지 않았으나, 주종이 valve부품, 식품, 섬유기계, 일반기계, 컴퓨터 부품 등으로 저가 제품이 주종을 이루고 있다. 정밀주조업체는 금후 정밀주조분야의 시장증대에 대한 전망을 밝게 보고 있지만, 상당수의 공장이 현재의 당면 애로사항으로서 기능인력의 부족과 함께 생산량 확보를 거론하고 있다. 또한 수입 원 ${\cdot}$ 부자재의 공동구매에는 반대의 입장을 보이고 있는 점이 특이하다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.709-711
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• 2012

Recently the research convenient for the user interface for the user interface technology that can be applied to the UI according to user's choice being made. To this end, the W3C is underway in a variety of devices from N-Screen service, consistent service delivery and the user's preferences according to UI to support adaptive services for a variety of research environments. In this paper, we studied the basic model-based user interface technology to develop a UI for the user's convenience. Web application applications apply measures will be used to apply the technology acquisition, and next-generation Web applications.

• Journal of Korea Foundry Society
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• v.30 no.4
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• pp.130-136
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• 2010

Sulfide segregation behavior, characteristics of solidification microstructure and compositional distribution in the riser/castings junction of heavy-section main bearing support (MBS) steel castings were investigated; Sulfide streaks of A segregation were formed in the transitional region from columnar grain to coarse equiaxed grain and floated with aggregation of the dendritic free crystal. Solute segregation behaviors of elements Si, P and S were V shape negative segregation from the bottom of the castings to upper part of the riser with the reference of vertical center-line of the specimen block. Those of elements C and Mn were V shape negative segregation in the main body and A shape positive segregation in the riser of the casting. Just beneath the pipe shrinkage in the riser segregation ratio of each element was the highest, and that of S was 3.6 times higher, C 3.3 times, P 2.1 times, Si 1.6 times and Mn 1.0 times respectively. [Mn/S] ratio of the specimen block was distributed in the wide range of 20~275.

• Journal of the Society of Naval Architects of Korea
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• v.45 no.4
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• pp.426-431
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• 2008

The high-strength low-alloy(HSLA) steels have low carbon contents($0.05{\sim}0.25%$ C) in order to produce adequate formability and weldability, and they have manganese contents up to 1.7%. Small quantities of silicon, chromium, nickel, copper, aluminum, molybdenum are used in various combinations. The results contained in this paper can provide the valuable information on the development of $-40^{\circ}C$ low temperature HSLA. Furthermore, the present experimental data will provide important database for casting steel materials of the offshore structure.