• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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• pp.1383-1386
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• 2005

Non-isolated OSAKA Converter, which removes a three-phase transformer, is described in this paper. The converter switches once in every half cycle of an AC commercial power source. Therefore, it can solve many problems caused by the high frequency operation. The proposed converter achieves the soft-switching operation and the EMI noise can be reduced. In this circuit, the resonant capacitor, which is used for the soft-switching operation, is utilized for the improvement of an input current waveform. To achieve low cost and compact structure, non-isolated OSAKA converter removes a three-phase transformer of the OSAKA converter. By removing the three-phase transformer, three phase currents occur the interferences each other. To avoid the interference, a new switching method for non-isolated OSAKA converter is preposed. The converter can be constructed by the low-speed large power devices. The converter generates the low distorted input current waveforms with high power factor.

• 한국정밀공학회지
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• 제14권11호
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• pp.25-33
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• 1997

This study deals with controlling the velocity of Electr-Hydraulic servo system through the non-stan-dard PIC control. This was done as follows. First, we modeled nonlinearised model and linearised model, second designed analytic program for electro-hydraulic servo system velocity control Lastly, to im- prove dynamic characteristics of system we designed non-standard PID contoller and verifed throughth experi- ment and MATLAB program, commercial used software.

• 한국실내디자인학회논문집
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• 제26권6호
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• pp.33-41
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• 2017

Hanok in Bukchon was originally planned for residential buildings, but recently, there have been needs and wants to renovate and modernize the houses into some other purposes. Many researches exist with regard to hanok in Bukchon; yet, most previous studies focus on the spatial changes caused by the renovation of hanok. Only few studies have dealt with some component issues such as window. Nevertheless, window of hanok is an important aesthetic and functional element that determines unique characteristics of hanok. In the process of recent modernization and functional changes of hanok, its traditional design is also changing. In fact, Bukchon has been rapidly evolving for tourist attractions so that banok has been renovated in various commercial as well as cultural purposes. Many of residential hanok have been converted into other purposes such as cultural, commercial or non-residential facilities so that the role of windows should be changed accordingly. Analyzing windows of the renovated hanok in Bukchon, this study identifies changes in its types in accordance with the repurposing. It deals with windows of the non-residential hanok only. A total of 456 Bukchon hanok are included in the Bukchon Historical and Cultural Center in the Hanok Register of the Hanok Registration System, which was enforced in 2001. Although 381 out of 456 hanok have been repaired since 2001, only 68 non-resident Bukchon hanok of the repaired ones are selected and surveyed in this study.

• 인터넷정보학회논문지
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• 제23권1호
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• pp.105-112
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• 2022

국방은 감염병과 같은 비전통 위협에 대한 직·간접적인 영향에서도 중단없는 의사결정 업무 수행이 필요하다. 모든 업무는 정보시스템을 활용하기에 정보시스템의 가용성을 보장하는 것이 매우 중요하다. 특히, 국방업무는 보안관리 측면에서 네트워크를 국방망과 상용인터넷망으로 이원화하여 수행되고 있다. 본 연구는 효과적인 국방정보체계 운용을 통해서 인터넷에서 수행되는 업무의 효율성과 보안의 효과성을 고려한 업무수행 방안을 제시하였다. 국방망과 상용인터넷이 연결되는 네트워크 접점을 최소화하고 다양한 업무 중 우선순위가 높은 것을 선정하여 효율적으로 운용하는 방안이 필요하디. 이를 위해 A기관을 대상으로 실제 사례를 조사하고 특성을 제시하였다. 본 논문에서 제시한 국방업무의 효과성을 향상하고 보안성을 보장하기 위한 대상 업무와 운용방안을 통해 감염병과 같은 비전통 위협에서도 업무수행의 가용성을 높일 수 있을 것이다.

• 한국식품과학회지
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• 제26권1호
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• pp.12-17
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• 1994

6개월 숙성된 재래식 고추장과 시판 중인 공장산 고추장의 이화학적 특성을 비교하였다. 공시된 고추장은 순창지역의 찹쌀고추장 18종, 보은지역의 10종의 보리고추장, 사천 지역의 밀 고추장 17종 및 공장산 고추장 10종이었다. 재래식 고추장의 유리당 함량은 대체로 공장산 고추장의 1/4 수준이었으며 주요 유리당은 glucose로 나타났고 이밖에 fructose, maltose sucrose가 검출되었다. 유리아미노산의 총량을 비교해 보면 공장산이 1,089mg으로 가장 높았고 그 다음이 사천, 순창, 보은 고추장 순으로 각각 554, 498, 266mg이었다. 각 고추장에서 가장 많이 함유되어 있는 유리아미노산은 순창 고추장에서는 serine, 보은 및 사천고추장에서는 aspartic acid, 공장산 고추장에서는 glutamic acid로 나타났다. 재래식 고추장에서 발견되는 휘발성 유기산으로는 acetic aicd, propionic acid, butyric acid 및 3-methyl butanoic acid가 검출되었으나, 공장산 고추장에서는 이 중 3-methyl butanoic acid가 검출되지 않았다. 함량면에서 aceticacid가 가장 많은 유기산으로 나타났으며 재래식 고추장에서 함량상 중요한 비휘발성 유기산은 lartic, oxalic, succinic acid이며 공장산 고추장에서는 이외에 itaconic, malic, malonic, pyroglutamic acid가 미량 검출되었다.

• 한국식품저장유통학회지
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• 제30권3호
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• pp.546-546
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• 2023

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1997년도 Proceedings of KIN-CIN Joint Symposium 97 on Safety of Shipping and History of Maritime Communication between Korea and China around 9th Century
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• pp.87-103
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• 1997

After full implementation of the GMDSS on February 1, 1999, non GMDSS equipped vessels may experience difficulty in establishing communications with vessels complying with the GMDSS. These difficulties are associated with the differences between the automated equipment required in the GMDSSand the non-automated equipment typicaly carried on small vessels. The purpose of this paper is to describe the IMO activities on the application of the GMDSS to non-SOLAS Convention ships both from a radiocommunication and a SAR point of view, and the national GMDSS implementation programme for non-SOLAS vessels. There are no differentiation between SOLAS ships and non-SOLAS vessels complying with the GMDSS, but they have to comply with the GMDSS according to the trading area A1, A2, A3 and A4. Canadian commercial vessels not subjects to SOLAS , will be required to comply with the GMDSS. Carriage requirements are being developed in consultation with the marine industry. The vessels not subject to SOLAS will not be required to carry GMDSS equipment, however, it is recommeded they fit for the GMDSS as applicable to their area of operation in many countries. Some recommednations are made to implement the GMDSS for non-SOLAS vessels in Korea.

• Journal of Forest and Environmental Science
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• 제25권2호
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• pp.85-91
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• 2009

About 83% of the total population of Lao PDR lives in rural areas. People living near forest are highly dependent on the forest resources closed to their villages. Especially non-timber forest products (NTFPs) provide a wide range of subsistence needs and are the main source of their cash income. They also make a significant contribution to the country economy. The annual export value of NTFPs is considerably high. 708 edible NTFP species (238 edible plants and 470 animals) have been recorded so far, and about 400 plants have been reported and used as medicinal plants by Lao people. One hundred NTFP species are considered as commercial forest products. The striking trend in NTFP resources is the decline of some commercial species due to increased demand on them for commercialization, and the loss of forest by rapid population growth. To sustainablely manage the NTFPs resources, a number of new management systems are under development and support in progress by the government.

• 대한기계학회논문집A
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• 제22권4호
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• pp.731-742
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• 1998

Bolted opening structures is widely applied for class 1 machinery of nuclear plant with strict design requirement. As the shape of the bolted opening structure is non-axisymmetric due to the existence of stud bolts although it is almost axi-symmetric, 3D analysis is required to satisfy such kind of design requirements. Because as much as possible trial computations are need to get an optimal design condition in the limited period of basic design, an easy and fast analysis tool is useful in the design stage. In the paper, a transformation technique of non-axisymmetric problem into quasi-axisymmetric has been proposed based on the general purpose commercial code ANSYS. Both the pre-processor which incorporates the technique and prepares data and post-processor which prepares arranged results from the huge output of commercial code have been developed to help the design engineers.

• 한국정보통신학회논문지
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• 제14권7호
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• pp.1729-1736
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• 2010

비상업용 정부선박은 국가가 소유 운영하는 선박으로 군함과 마찬가지로 타국 재판관할권으로부터 면제된다. 이는 전통 국제법상의 주권면제이론에 따른 것으로, 국제법상 국가 행위나 재산은 타국의 재판권으로부터 면제되기 때문이다. 주권면제는 판례나 국가관행을 통해 확립된 일반 국제법상의 원칙이다. 문제는 우리 관할수역에서의 타국 비상업용 정부선박에 대한 관할권 제한은 해양안보적 측면에서 상당한 불안요인이 된다는 점이다. 왜냐하면 불순한 의도로 우리 관할수역에 들어와도 주권면제가 인정되기 때문에 그 대응에는 한계가 있을 수밖에 없다. 국제법이나 국제관례를 벗어난 관할권 집행은 국제사회의 비난은 물론 국가책임을 발생시키기 때문에 관련 국제규범의 정확한 이해 및 적용을 통한 합법적 권한행사가 중요하다.