• 한국해양공학회지
• /
• 제15권2호
• /
• pp.124-129
• /
• 2001

The research on anticorrosive of valve for ship, waterworks, and drainage system is very important. The purpose of this paper is to develop the metal/polyurethan adhesive technique at insider of the value to prevent corrosion in the value. It is performed to the bending strength test by using metal /polyurethan in the metals (SB41, Al6061). It is investigated to the effects of bending strength on curing temperature, preheating time and curing time, and to the fracture mechanism of metal/polyurethan adhensived specimen. As a results, we find that the bending strength is the highest at curing temperature of 11$0^{\circ}C$ and the curing time is 60 minutes in metal/polyurethan adhesive specimen.

• Journal of Information Technology Applications and Management
• /
• 제22권4호
• /
• pp.95-103
• /
• 2015

In this paper, we designed a platform-based $ERP^+$ system, which integrates ERP system and SCM system. With platform-based technology we can connect online and offline platforms, enterprise management systems, and government systems. In our research, first we examined the problems of the existing ERP systems, and second we discussed all basic tasks of our $ERP^+$ system. We also designed several modules for this platform-based system and system network. Our results showed that a platform-based $ERP^+$ system can effectively manage the information and the human/material resources, by using O2O (online to offline) technic. Even different systems can be integrated effectively. It can reduce the costs of enterprise management activities, enhance the enterprise competitiveness.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2000년도 하계학술대회 논문집 C
• /
• pp.1963-1965
• /
• 2000

This paper deals with a problem of detecting the inner corrosion of the ACSR(Aluminum Conductor Steel Reinforced) power lines using a detector which consists of an ECT(Eddy Current Test) sensor, a constant current service, a signal processing unit, and a RF transmitter/receiver unit. The detector runs on the ACSR transmission line and inspects the corrosion of the conductor using the technic of the nondestructive eddy current test. The experimental result shows this detector can efficiently find the zinc loss in ACSR power lines.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2000년도 하계학술대회 논문집 B
• /
• pp.1018-1020
• /
• 2000

In the operation and maintenance activity of hydro turbine generator, one of the important parameters is the efficiency. This study analyze the case of efficiency management by pressure time method and survey the application of this method through the actual test. And it is confirmed that the Pressure time method exccesively limit the general condition to be applied. If index method is used for efficiency management because the index method calibrated by absolute discharge(by flow of pressure time method) is very accurate. it make to be able to manage the realtime efficiency.

• 치과방사선
• /
• 제11권1호
• /
• pp.67-74
• /
• 1981

The study was performed to investigae the thickness of lamina dura of the human teeth in periodontal disease, which obtained from the intraoral roentgenograms of the 122 cases taken by bisecting technic. All films were divided into the different ages, the different sexes, and the different location of the different teeth. The obtained results were as follows: 1. Compared with the normal teeth, the thickness of lamina dura in periodontal disease is in creased in all of different ages, sexes and teeth. (equation omitted) 2. Generally, the alveolar crest portion is the thickest among the root surfaces, and midroot, apex followed, and the average thinckness of the posterior teeth is thicker than that of anterior teeth. The mean value of the whole maxillary teeth is almost same as that of mandibular teeth. On the whole cases, the differences of male and female is about 0.01㎜, which is not a significant differences.

• 치과방사선
• /
• 제11권1호
• /
• pp.75-78
• /
• 1981

The diagnostic value of a intra oral film is related to projecting technic and interpretation. The intra-oral film is a single plane representation of a three dimensional object, therefore superimposition is inevitablly present. The purpose of this article is to show how foreign objects in the jaw may be localized. The author used double exposure technics, that are changed angulation of vertical or horizontal to one film. The obtained results are as fallow: 1. In the upper anterior region, the moving distance of the labially impacted reference object was greater than that of the palatally impacted one. 2. In the upper molar region, the moving distance of the mesiobuccal root apex was the greatest and that of palatal root apex was the shortest. 3. In the lower molar region, the change of the alveolar bone level in the buccal side was greater than that of lingual side.

• 대한약침학회지
• /
• 제4권2호
• /
• pp.73-86
• /
• 2001

Objective : These case study were made to evaluate and observe the treatment for the Herpes-Zoster through the korean oriental medicine. Method : Clinical observation and analysis about 4 cases of Herpes-zoster including the Ramsay's-hunt syndrome had been done the patients of the Sang-Ji Oriental Medicine Hospital. These cases were mainly treated with oriental medicine using the Herb medication, Korean Bee-Venom therapy, Acupuncture and Electro-acupuncture therapy. Acupuncture technic was mainly used Sa-Am acupuncture(Four needle technique). Result : After treatment, all of cases were completely cured without any complication. Conclusion : Based on the clinical results, Korean Oriental Medicine is believed to be effective for treating Herpes-zoster, and further studies should be conducted to provide more valuable information.

• 한국항공운항학회지
• /
• 제17권4호
• /
• pp.55-62
• /
• 2009

The Prime objectives of this study are to identify and analyze possible solutions and select a solution for the specification and operation plan of the meteorological purpose aircraft in Korea. Infrastructure like meteorological purpose aircraft and aircraft operating systems should be set up and their efficient plan must be established to improve meteorological technic in Korea. As a result of the study, we have found that the turboprop engine powered aircraft is the most suitable to initial model for the meteorological purpose aircraft. It was found that the indirect operation method might be the best solution, also. The results of this study may be useful to make decision for selecting specification and operation of the meteorological purpose aircraft.

• 한국안전학회지
• /
• 제12권2호
• /
• pp.95-101
• /
• 1997

The confidence of new technology development for NO_x$ components elimination is obtained as conclusion based 1ike followings ; 1) The technology using PSC spark is a excellent methods for NO_x$ components elimination above 70% without by-product pollutants. 2) Some materials like Oxygen, Vaporized Water and Ammonia, increase the of NO_x$ elimination by staged addition. 3) Environmental conditions like pulse frequency and peak voltage are the important dosing factors for pollutants elimination effects. 4) As the PSC technic is the up-to-date one for pollutions elimination the research and development must be executed continuously for the purpose of theoretical establishment. And the application field must be broaden in future.

• 정보관리연구
• /
• 제25권4호
• /
• pp.1-35
• /
• 1994

이 논문은 최근에 급속히 증가하고 있는 CD-ROM 데이터베이스의 수집과 그 효율적인 이용에 대한 방안의 연구로, 주로 각종 CD-ROM 데이터베이스의 제작방향(製作方向) 및 수집방법에 관한 아이디어를 제공하고, CD-ROM 데이터베이스의 검색(檢索) 효율성(效率性)을 높이기 위한 메뉴 화면구성 및 그 구체적인 정보검색 기법을 비교 분석해 본 것이다. 본 논문은 그러한 분석 결과를 통하여 이상적인 메뉴 화면의 제안과 표준(標準) 정보검색(情報檢索) 기술이 무엇인가를 규명하여 하나의 표준(標準)이 될 수 있는 기법을 제시하고자 시도하였다.