• Title/Summary/Keyword: Chongju

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Environmental Management towards Sustainable Urban Development of Chongju City (지속가능한 도시개발을 위한 환경관리방안의 모색 - 청주시를 중심으로 -)

  • Lee, Jong-Ho
    • Journal of Environmental Impact Assessment
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    • v.4 no.2
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    • pp.131-149
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    • 1995

  • The object of this study is to suggest some alternatives for environmental management towards sustainable urban development of Chongju city in Korea. This study analyses urban environmental indicators (population density, land use, road, park, car, etc.), level of air and water pollution and solids waste generation by comparing Chongju city and other large cities. Some alternatives towards sustainable development in Chongju city would be summerized and suggested as higher concentrated land use(compact city), mixed land use, supply of mass transit, establishment of regional environmental standards, total emission regulation of air and water pollutants, the preparation of Local Agenda21 of Chongju, and the introduction of strategic environmental assessment(SEA) into environmental impact assessment.

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The simulated floating inductor using of fully-differential OTAs and its application to a ladder-type third-order elliptic low-pass filter

  • Lee, Ju-Chan;Lee, Jang-Hyuck;Park, Hee-Jong;Shin, Hee-Jong;Park, Ji-Mann;Cha, Hyeong-Woo;Chung, Won-Sup
    • Proceedings of the IEEK Conference
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    • 2000.07a
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    • pp.159-162
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    • 2000

  • Novel simulated floating inductor (SFI) using fully-differential operational transconductance amplifier (FOTA) is presented. The SFI only consists of two FOTA and a capacitor. A ladder-type third-order elliptic low-pass filter is also presented for the SFI’s application. The theory of operations described and the simulation results are used to verify theoretical predictions. The SFI shows close agreement between predicted behavior and simulation performance. The simulation results that the SFI have The temperature coefficient of-179 ppm/$^{\circ}C$ and Q factor of 120 at 200kHz at supply voltage ${\pm}$5 V.

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A Study on the Government Office Building of Chongju Castle in the Late Yi-dynasty (청주읍성(淸州邑城) 관아공해고 - 규모(規模) 및 위치(位置) 추정(推定)을 중심(中心)으로 -)

  • Kim, Dong-Sik;Kim, Tai-Young
    • Journal of architectural history
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    • v.8 no.1 s.18
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    • pp.41-52
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    • 1999

  • This study aims to infer the plan and location of the government office building in Chongju Castle in the Late Yi-dynasty. The conclusion is as follows: 1. The Chongju Castle Map(淸州邑城圖, late in the 18th century, hereinafter referred to CCM) provides the detail arrangement and location of Government Office Building in Chongju Castle. And the road structure and plan of the CCM is almost same with the present time. 2. As compared with CCM and a Chongju-land Registration Map(淸州面地籍原圖, 1913, CRM) to infer the location of the traditional government office building in Chongju Castle, the building locations of Gaek-Sa(客舍) Donghun(東軒)'s region in CCM are almost accordance with today's. But those of Byungyoung(兵營) Group's region are represented by a little error. So the locations of Byungyoung(兵營) Group's region rearranged, moved down to be in accordance with the approach circulation of Main Gate(閉門樓) which is shown in CRM. 3. The records, on the plan of the traditional government office building in Chongju Castle, have proved that the plan of Gaek-Sa was a width of 11 bay and a depth of 2 bay. A width of 3 bay drawn in CCM, the present plan of Donghun is a width of 7 bay and a depth of 4 bay. The main building and especially the double-storied Main Gate($4{\times}3$) of Byungyoung Group are exactly in keeping with the present road structure.

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Efficient Controlled Selection

  • Ryu, Jea-Bok;Lee, Seung-Joo
    • Communications for Statistical Applications and Methods
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    • v.4 no.1
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    • pp.151-159
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    • 1997

  • In sample surveys, we expect preferred samples that reduce the survey cost and increase the precision of estimators will be selected. Goodman and Kish (1950) introduced controlled selection as a method of sample selection that increases the probability of drawing preferred samples, while decreases the probability of drawing nonpreferred samples. In this paper, we obtain the controlled plans using the maximum entropy principle, and when the order of nonpreferred samples is considered, we propose the algorithm to obtain a controlled plan.

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