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김영희(Young-Hee Kim),김홍주(Hong-Zhou Jin),차진솔(Jin-Sol Cha),황창윤(Chang-Yoon Hwang),이동현(Dong-Hyeon Lee),라자 무하마드 살만(R. M. Salman),박경환(Kyung-Hwan Park),김종범(Jong-Bum Kim),하판봉(Pan-Bong Ha) 한국정보전자통신기술학회 2020 한국정보전자통신기술학회논문지 Vol.13 No.5
기존에 진성난수 생성기를 위한 베타선 센서 회로의 아날로그 회로와 비교기 회로에 사용되는 파워와 그라운드 라인은 서로 공유하므로 비교기 회로의 디지털 스위칭에 의해 발생되는 파워와 그라운드 라인에서의 전압강하가 CSA를 포함한 아날로그 회로의 출력 신호 전압이 감소하는 원인이었다. 그래서 본 논문에서는 디지털 스위칭 노이즈의 source인 비교 기 회로에 사용되는 파워와 그라운드 라인을 아날로그 회로의 파워와 그라운드 라인과 분리하므로 CSA(Charge Sensitive Amplifier) 회로를 포함한 아날로그 회로의 출력신호전압이 감소되는 것을 줄였다. 그리고 VREF(=1.195V) 전압을 VREF_VCOM과 VREF_VTHR 전압으로 변환해주는 전압-전압 변환기 회로는 PMOS current mirror를 통해 IREF를 구동할 때 PMOS current mirror의 드레인 전압이 다른 경우 5.5V의 고전압 VDD에서 channel length modulation effect에 의해 각각의 current mirror를 통해 흐르는 구동 전류가 달라져서 VREF_VCOM과 VREF_VTHR 전압이 감소하는 문제가 있다. 그래서 본 논문에서는 전압-전압 변환기 회로의 PMOS current mirror에 PMOS 다이오드를 추가하므로 5.5V의 고전압에서 VREF_VCOM과 VREF_VTHR의 전압이 down되지 않도록 하였다. Since the analog circuit of the beta ray sensor circuit for the true random number generator and the power and ground line used in the comparator circuit are shared with each other, the power generated by the digital switching of the comparator circuit and the voltage drop at the ground line was the cause of the decreasein the output signal voltage drop at the analog circuit including CSA (Charge Sensitive Amplifier). Therefore, in this paper, the output signal voltage of the analog circuit including the CSA circuit is reduced by separating the power and ground line used in the comparator circuit, which is the source of digital switching noise, from the power and ground line of the analog circuit. In addition, in the voltage-to-voltage converter circuit that converts VREF (=1.195V) voltage to VREF_VCOM and VREF_VTHR voltage, there was a problem that the VREF_VCOM and VREF_VTHR voltages decrease because the driving current flowing through each current mirror varies due to channel length modulation effect at a high voltage VDD of 5.5V when the drain voltage of the PMOS current mirror is different when driving the IREF through the PMOS current mirror. Therefore, in this paper, since the PMOS diode is added to the PMOS current mirror of the voltage-to-voltage converter circuit, the voltages of VREF_VCOM and VREF_VTHR do not go down at a high voltage of 5.5V.
觀光「레크레이션」資源으로서의 水資源 開發利用에 關한 小考
黃昌潤 新羅大學校 1989 論文集 Vol.27 No.-
Water is essential to all species. The water resource can be used in variously different way. This is evident in considering it's historical development/usage. The starting-point of the essay is based on the one of water resources can become Tourism and Recreation resources. Water resources for Tourism and Recreation are various in type according to their classifications. Here these water resou ces are broadly classified into eight types : (1) ingredients, (2) flow/movement, (3) shape, 4) geogaphical location I. (5) geographical location Ⅱ, (6) user's behaviours, (7) time zone of usage, and (8) potential of development. But these types are interlocked or interrelated in every way or in everysense. The objective of the essay is focused on making a framework of how to develope/use water resources for tourism and recreation. The approaches are ecological and morphological in making a framework ; that is to say, these approaches ae a balance between nature and man. However, water resources give creativity to us and we give developmental potential to water resources. Thus, the approaches are that the place is imbued with a sprite orsense, that man and water resources are symbiotic. However we must keep in mind that this approach is one of them, but very significant.
黃昌潤 新羅大學校 1987 論文集 Vol.23 No.-
The hospitality industry in Korea has been developed rapidly since 1960's. Especially in the early part of 1980's the international tourism became active. The purpose of this study is to examine the patterns of spatial distribution of tourism resources in Korea, purposing the interregional differentiation of the individual spatial unit and its tourism resources. The study area for analysising is 192 local autonmies in 1984 which cover all the territory of Korea. The data taken into this study is based on the 1985 Si, Do Statistical Yearbook, the Catalog of National Tourism Resources (KNTO) and the Report on the Accomplishment of the 2nd National Comprehensive Development Plan(KRIHS). from these sources 59 kinds of tourism resources were investigated and clustered into 21 variables. With 21 input variables shown in appendix, factor analysis (Principalaxis factor analysis and Varimax rotation with factors whose eigenvalues are larger than 1.0) has been done and the respective factors are mapped to see the spatial patterns. The result of this study are as follows : Five factors were extracted, as shown in Table 1. Each factor describes the different aspects of the current interregional differentiation of the individual spatial unit and it can be interpreted in the light of the systematic distribution pattern of each region. The spatial distribution of degree of socio-cultural resources is found to be the leading factor which describes greater part of the interregional differentiation of respective spatial unit. It suggests that generally cultural social resources and tourism facilities are aggregated within some regions, and thus each locality is prominent. The remaining 4 factors are secondary one's as compared with factor Ⅰ. Factor Ⅱ describes the interregional differentiation in terms of the degree of physical scenic attractions which are associated with landscape feature and the level of regional development. Fact Ⅲ describes the differentiation on the basis of the degree of the existence of the civil health resorts including spas or beach. From the view point of cost, these resorts with cheap hotels and restaurants are different from those located at golf or ski areas. Factor Ⅳ describes the interregional differentiation of the individual spatial unit according to the specific agriculural land use pattern, hunting and fishing area, specialty food and residentiary industry. Factor Ⅴ describes the differentiation based on the national and provincial parks. The other factors are /the reflections of uniqueness of each region. Further analysis is required to discuss these in more details.