• 한국기록관리학회지
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• 제22권2호
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• pp.135-154
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• 2022

이 연구는 자치단체 RMS 유지관리 현황 분석을 통해 RMS 운영성 확보를 위한 방안을 제안하는 데 목적이 있다. 이를 위해 RMS 개발 및 유지관리 사업 제안요청서 분석, RMS 업무담당자 및 사업자 인터뷰 수행 등을 통해 자치단체 RMS 유지관리 현황을 확인하였다. 자치단체 RMS 유지관리 현황은 RMS 응용SW 버전관리를 위한 운영지원이 체계적이지 않으며, 인프라(HW, 상용SW)는 기술지원 종료된 장비의 교체가 잘 이루어지지 않고 있는 상황이다. 본 연구를 통해 자치단체 RMS 운영성 확보를 위한 방안을 다음과 같이 제안하였다. 첫째, 자치단체 RMS 안정적인 운영과 유지관리를 위해 운영지원 상시화로 무중단 체계 구축이 필요하다. 이를 위해, RMS 운영지원 요청사항에 대해 즉시 처리할 수 있는 전문인력 조직과 원격접근 가능한 환경구성 마련이 요구된다. 둘째, RMS 통합유지관리 체제 구축을 통한 일정 수준 이상의 유지관리 품질을 확보해야 한다. 현재 이원화 되어 운영 중인 RMS 응용SW 유지관리와 RMS 운영지원 업무를 통합 유지관리하여 정보화사업을 효율적으로 추진하고, RMS 유지관리 사업단 운영을 통해 품질 높은 운영지원을 수행해야 할 것이다. 셋째, RMS 인프라 호환성 목록을 체계적으로 관리하여 자치단체 RMS 인프라 유지관리를 위한 명확한 기준을 제공해야 한다.

• 한국대기환경학회지
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• 제26권2호
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• pp.234-240
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• 2010

Gas flow uniformity is an important factor to guarantee particle removal performance of electrostatic precipitators (EP), and the gas flow uniformity is evaluated by a fraction of standard deviation to the mean of gas flow distribution (%RMS) or a technical standard, ICAC EP-7, provided by The Institute of Clean Air Companies. In this study, relationship between the ICAC EP-7 and %RMS in evaluation of gas flow uniformity was investigated in terms of flow velocity. The maximum values of %RMS for gas velocity distribution of normal distribution has been obtained, and the maximum values of %RMS with gas velocity distribution satisfying ICAC EP-7 standards were also evaluated. With gas flow distribution obtained from CFD analysis and physical model test of real EP, %RMS values were calculated and it was tested if those gas flow distribution satisfy the criteria specified in ICAC EP-7. The %RMS values satisfying criteria of ICAC have been appeared to have similar values with %RMS values calculated with normal distribution of gas velocities.

• 전자공학회논문지
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• 제51권11호
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• pp.101-106
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• 2014

본 논문에서는 자동 이득 제어 회로를 이용한 와이드 다이나믹 레인지 RF root-mean-square (RMS) 전력 검출기를 소개한다. 제안하는 자동 이득 제어는 voltage gain amplifier (VGA), RMS 변환 블록, 이득 조절 블록으로 구성되어 있다. VGA는 dB-linear한 이득 관계를 갖는 캐스코드 VGA를 사용하였다. 제안하는 RMS 변환은 입력 신호 전 파장의 제곱 변환을 이용하여 RMS에 비례하는 DC 전압을 출력한다. 제안하는 RMS 전력 검출기는 500MHz에서 5GHz에서 작동하며 검출 범위는 0 dBm에서 -70dBm 이상의 신호를 -4.53 mV/dBm의 비율로 검출한다. 제안하는 RMS 전력 검출기는 TSMC 65nm 공정을 사용하여 설계되었으며 1.2V에서 5mW의 전력소비를 갖는다. 칩 레이아웃 면적은 $0.0097mm^2$이다.

• 한국음향학회지
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• 제19권5호
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• pp.53-59
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• 2000

본 논문에서는 우리나라의 지형과 환경을 고려하여 전파환경을 분류하고, 1.95GHz에서 전파-전파특성을 연구하기 위해 PN 코드 상관 검파법을 이용한 다중지연파 측정 시스템을 구축하였다. 정확하고 기본적인 전파-전파 특성 측정을 위하여 우리나라의 특징적인 구조물인 시화공단을 선정하였다. 측정환경은 LOS와 N-LOS로 구분하여 전송거리에 따른 수신전력과 RMS 지연확산의 변화를 측정하였다. 측정결과 LOS의 수신전력은 -1.6dBm에서 -28.BdBm, RMS 지연확산은 0.023 ㎲∼0.22㎲이며 N-LOS의 수신전력은 -164Bm에서 -36.SdBm, RMS 지연확산은 0.068㎲∼0.37㎲가 측정되었다.

• Advances in concrete construction
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• 제9권6호
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• pp.547-556
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• 2020

This study aimed to develop reference materials (RMs) that are chemically stable and can simulate the flow characteristics of cement paste. To this end, the candidate components of RMs were selected considering the currently required properties of RMs. Limestone, slag, silica, and kaolin were selected as substitutes for cement, while glycerol and corn syrup were selected as matrix fluids. Moreover, distilled water was used for mixing. To select the combinations of materials that meet all the required properties of RMs, flow characteristics were first analyzed. The results revealed that silica and kaolin exhibited bilateral nonlinearity. When an analysis was conducted over time, slag exhibited chemical reactions, including strength development. Moreover, fungi were observed in all mixtures with corn syrup. On the other hand, the combination of limestone, glycerol, and water exhibited a performance that met all the required properties of RMs. Thus, limestone, glycerol, and water were selected as the components of the RMs. When the influence of each component of the RMs on flow characteristics was analyzed, it was found that limestone affects the yield value, while the ratio of water and glycerol affects the plastic viscosity. Based on this, it was possible to select the mixing ratios for the RMs that can simulate the flow characteristics of cement paste under each mixing ratio. This relationship was established as an equation, which was verified under various mixing ratios. Finally, when the flow characteristics were analyzed under various temperature conditions, cement paste and the RMs exhibited similar tendencies in terms of flow characteristics. This indicated that the combinations of the selected materials could be used as RMs that can simulate the flow characteristics of cement paste with constant quality under various mixing ratio conditions and construction environment conditions.

• Wind and Structures
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• 제27권4호
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• pp.223-234
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• 2018

In this study, a simplified three-dimensional calculation model is developed for the dynamic analysis of soil-pile group-supertall building systems excited by wind loads using the substructure method. Wind loads acting on a 300-m building in different wind directions and terrain conditions are obtained from synchronous pressure measurements conducted in a wind tunnel. The effects of soil-structure interaction (SSI) on the first natural frequency, wind-induced static displacement, root mean square (RMS) of displacement, and RMS of acceleration at the top of supertall buildings are analyzed. The findings demonstrate that with decreasing soil shear wave velocity, the first natural frequency decreases and the static displacement, RMS of displacement and RMS of acceleration increase. In addition, as soil material damping decreases, the RMS of displacement and the RMS of acceleration increase.

• 대한기계학회논문집
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• 제17권9호
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• pp.2214-2222
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• 1993

With the use of the NC machine tool, the unmanned production system has been growing recently in the manufacturing field. This there are problems with monitoring adequate tool fracture during the cutting process efficiently. This study was planned and carried out to discover a way of monitoring tool condition in NO-LINE systems during the cutting process. The acquisition of data in cutting force and tool wear has been made in the section examined, to extract the RMS value of the cutting force as specific factors in the cutting process. The fluctuation of the RMS characteristics. From the results, it has been shown that the fluctuation of the RMS values for the cutting force has a close relation to flank wear.

• 전기학회논문지
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• 제60권8호
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• pp.1547-1554
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• 2011

As process parameters scale, interconnect width are reduced rapidly while the current flowing through interconnects does not decrease in a proportional manner. This effect increases current density in metal interconnects which may result in poor reliability. Since RMS(root-mean-square) current limits are used to evaluate self-heating and short-time stress failures caused by high-current pluses, RMS current estimation is very important to guarantee the reliability of semiconductor systems. Hence, it is critical to estimate the current limits through interconnects earlier in semiconductor design stages. The purpose of this paper is to propose a fast, yet accurate RMS current estimation technique that can offer a relatively precise estimate by using closed-form equations. The efficiency and accuracy of the proposed method have been verified through simulations using HSPICE for a vast range of interconnect parameters.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.488-491
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• 2002

This growth if WWW(World Wide Web) with the spread of ADSL provides us with a variety of service that are the extensions of opportunities to get information. a various education methods by remote courses and electronic commerce. Remote Monitoring Server(RMS) that uses internet and WWW is constructed for chip mounter. Hardware base consists of RMS, chip mounter and C/S server. In this paper, we realize the remote management system with monitoring and diagnosis function to efficiently operate chip mounter the one of PCB assembly equipment. The remote management system for chip mounter consists of RMS(Remote Monitoring Server) and C/S server. RMS manages real-time information from chip mounter through TCP/IP. RMS that utilizes real-time information informs user of the actual output the operation status of chip mounter, user of the actual output, the operation status of chip mounter, the trouble code and the trouble description.

• 한국수산과학회지
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• 제32권3호
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• pp.368-373
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• 1999

Topex/Poseidon sea surface heights are compared to tide gauge sea levels in the South Indian Ocean in the period of January 1993 to December 1995. A user's handbook (AVISO) for processing sea surface height data was used in this study. Topex/Poseidon sea surface heights were obtained from satellite data at the proximity of tide gauge stations. These data were reproduced by a linear interpolation with the interval of 10 days and were processed by the Gaussian filter with a 60-day window. The tide gauge sea levels were obtained in the same manner as the satellite data. The main results on RMS (Root-Mean-Square) and CORR (CORRelation coefficient) in our study were shown as follows: 1) on the characteristics between two data (in-situ and model data), the results (RMS=2.96 cm & CORR=$92\%$ in the Amsterdam plateau, and RMS=3.45 cm & CORR=$59\%$ in the Crozet plateau) of the comparison of Topex/Poseidon sea surface heights with tide gauge sea levels, which was calculated by in-situ data of obsewed station showed generally low values in RMS and high values in CORR against to the results (RMS=4.69 cm & CORR=$79\%$ in the Amsterdam plateau, and RMS= 6.29 cm & CORR= $49\%$ in the Crozet plateau) of the comparison of Topex/Poseidon sea surface heights with tide gauge sea levels, which was calculated by model data of ECMWF (European Center for Medium-range Weather Forecasting), and 2) on the characteristics between two areas (Kerguelen plateau and island), the results (RMS=3.28 cm & CORR= $54\%$ in the Kerguelen plateau) of open sea area showed low values in RMS and high values in CORR against to the results (RMS= 5.71 cm & CORR=$38\%$ in the Kerguelen island) of coast area, respectively.