청주대학교 캠퍼스 내 옥외 편의시설물 이용실태 연구

김민중,김득곤,장태현 청주대학교 산업과학연구소 2001 産業科學硏究 Vol.18 No.2

The educational environment of university campus is very important. Because that the campus is creative environment and make emotional as place which make the intellectual and emotional humanbeing. In this university case, 1. The establishment of facilities in out of campus based the student's opinions 2. The place of establishment and facility things have to surveied when the university make the master plan about space, circulation, season and etc. 3. The environment and life mode of facilities are research by the environmental design aspects. 4. Every facilities in the campus require the opinion and participation of professionalists. 5. The University Environmental Design Committee composed in the school organized system. According to above the results, this article proclaimed the University administrative staff and relative professionalists seasch to effective methods and to approach solving the problems.

尖端技術産業團地의 淸州誘致에 따른 開發戰略

權尙俊 청주대학교 산업과학연구소 1991 産業科學硏究 Vol.9 No.-

The Strategy For Technopolis According To Developing In Chongju Area. In this study the strategy for technopolis according to developing in Chongju Area is suggested in order to promote research and development and prepare participants and residents for the construction of the technopolies in the area. There are new fields, which are concerned with the rapid growth and the high technologies ; mechatronics electronics, fine chemicals, new materials, agriculture, environments, etc. The strategy is based on finding new ideas for the construction of the technopolis ; to increase the effects on the development for the area, to have supports in the management and the intensification for R & D, to facilitate the high technologies in the area, and to make up complexes for industries and R & D, to facilitate the high technologies in the area, to make up complexes for industries and R&D, and to prepare the programs for the complexes. There are not only new ideas for the technopolis but also confrontations to the ideas ; to consider the factors for the environmental control planning to have regional basis for the development of the technopolis, and read just in planning the related cities and towns to the technopolis.

2중 버블시트로 단열처리된 옹벽의 온도이력 및 결로 방지 특성

정은봉,장덕배,한천구 청주대학교 산업과학연구소 2013 産業科學硏究 Vol.30 No.2

This study investigates the effect of double layered bubble sheets on the side condensation of concrete cast for the retaining walls placed underground in practice. Temperature history was measured during summer and winter, in order to examine the level of the insulation performance of the double layered bubble sheets and to estimate the level of side condensation of the concrete structures applied in practice. Test results showed that in summer, the double layered bubble sheets applied to the outside of the retaining walls obstructed the low heat and moisture transfer, arising from the earth behind the walls. This effect maintained the temperature and the humidity of the retaining wall structures and thereby resulted in the protection of the side condensation. In addition, in winter, the similar effect of the double layered bubble sheets on the protection of the side condensation in the retaining walls was achieved. It is concluded that the double layered bubble sheets have a significant effect on insulating concrete structures, especially on the full protection of side condensation of the retaining wall during both summer and winter.

고온양생이 콘크리트의 강도발현에 미치는 영향

한민철 청주대학교 산업과학연구소 2007 産業科學硏究 Vol.24 No.2

In this paper, estimation of compressive strength of concrete subjected to high temperature was discussed. Water to binder ratios ranging from 30% to 60% and curing temperature ranging from 20℃∼65℃ were adopted for experimental parameters. According to results, high curing temperature resulted in an increase in early age strength, while it led to decrease later age strength. for strength estimation, Logistic model based on maturity equation and Carino model based on equivaltlt age were applied to verify the availability of estimation model. It shows that fair agreements betwetl calculated values and measured values were obtained evaluating compressive strength with logistic curve. The application of logistic model at high temperature had remarkable deviations at later maturity. Whereas, the application of Carino model showed good agreements between calculated values and measured ones regardless of W/B. However, correction factors should be considered to enhance the accuracy of later age strength estimation of concrete for both Logistic and Carino model.

Bi₂Te₃단결정 시료의 전기 비저항 측정

염태호 청주대학교 산업과학연구소 2006 産業科學硏究 Vol.24 No.1

The electric resistively of the Bi₂Te₃:Er^(3+) single crystal, grown by Czochraski method, has been studied at boom temperature. The resistively was obtained by using the Van deb Paul method. The measured bulk electrical resistivities of non-treated and thermal-treated Bi₂Te₃:Er^(3+) single crystals are 1.48 mΩcm and. 1.37 mΩcm, respectively. The information of electric besistivity and conductivity fob the Bi₂Te₃:Er^(3+) is helpful to understand the application of the material as a cryogenic particle detectors for high resolutions and wow threshold.

자기장하의 이상도선에서 양자점 접촉

윤달호 청주대학교 산업과학연구소 2006 産業科學硏究 Vol.24 No.1

The electron transport system in two dimensional ideal wire is investigated by lattice model and tight-binding approximation. The numerical result for ideal wire in magnetic field is represented. This formalism can be extended to scattering and quantum contact problems and applied to numerical calculation the ballistic conductance in mesoscopic structures.

시뮬레이션을 이용한 분류방법 비교

이승주 청주대학교 산업과학연구소 2007 産業科學硏究 Vol.24 No.2

The important problem in statistics, machine searing, and data mining is to find a better classifier based on the data. The aim of this paper is to compare classification performance using the real and simulated data. The compared method are LDA, QDA, _(k)NN, Naive Bates, SVM, and CART. We found that SAM has smaller error rate than the other methods based on the real data sets.

고분자 Langmuir-Blodgett 박막의 제작 및 두께 특성

정치섭 청주대학교 산업과학연구소 2007 産業科學硏究 Vol.24 No.2

The copolymer Langmuir-Blodgett films of P(VDF-TrFE) are successfully fabricated by horizontal (Schemer) deposition method. Even though this copolymer is not a good amphiphiles, it was found that sufficiently stable Languor layer can be made as top of the water sulphas. The thickness characteristics of LB layer have been investigated by surface plasmas reassigns (SPR) technique. The linear behavior of the resonance peak displacement clearly shows that the thickness of the SBA masolayer does not change drastically up to 9 layers.

폴리프로필렌섬유의 형상비 및 길이조합 변화에 따른 고강도 콘크리트의 폭렬특성

송용원,허영선,한천구 청주대학교 산업과학연구소 2007 産業科學硏究 Vol.24 No.2

This study investigates spilling resistance of high strength concrete, 60∼80MPa class, designed with the various adding and aspect ratios of polypropylene(PP) fiber. Test showed that increase of PP fiber content and aspect ratio decreased the fluidity of fresh concrete. Especially, the slump flow significantly decreased in the specimens containing certain fibers being 475 and 750 of aspect ratios. Compressive strength of specimtls containing fibers, 300 and 475, exhibited 5 percent higher thin other specimens. Specimens containing combination of diverse fiber lengths declined the value about 10-25% than that of control concrete. In addition, specimens containing more thin 0.lvol% of PP fiber, T00, hid favorable spilling resistance, while specimtls containing PPsxl(3mm+19mm) and PPmxl(6mm+19mm) was O.1vol% and specimens containing PPsl(3mm+12mm) and PPml(6mm+12mm) was 0.15vol%. Therefore the specimen, containing 0.1vol% of PP fiber, T00, exhibited the most effective fluidity, strength is well is the side of economy.

中國 延吉市 都市發展 模式

朴世榮,金泰永 청주대학교 산업과학연구소 2006 産業科學硏究 Vol.24 No.1

This study is to find out formation and development process from ancient times to present focused Yanji city in the east-northern area in china. Through Yuan(元)·Ming(明)·Ch'ing(淸) dynasty, after the discharge of confinement in the late 19 century, the settlements were formed around east area, that is, the present Yanji urban area. The japanese consular office had been moved in east area since the beginning of the early 20 century, and so, the existing residents moved to west area. And the military and administrative facilities were located on the urban outskirts. After the September 18th incident on 1932, Yanji had been constructed with the strategic center area under the urban planning. The administrative facilities of those days had been altered to he functional branches and educational facilities, and become the basis of development of Yanji city. After 1950s city's expansion had caused an advance of suburbs, and so the urban spaces of Yanji city have both concentrated and radial structures.