Ensemble of Sanctification and Commodification: Sociocultural Production of '5·18 Democracy Plaza' and Governmentality of Space

본 연구는 5·18민주화운동의 사적지 중 하나인 5·18민주광장의 사회문화적 생산과 구성, 기념행위가 매개하는 사적지를 구성하는 기념물과 행위자의 상호작용을 고찰한다. 광장의 행위자와 사물의 상호작용에 대한 탐구는 5·18이 현재 어떻게 재현되고, 도시공간과 특정 사건의 기념 행위가 어떤 관계를 맺고 있는지 드러낼 수 있다. 5·18민주광장을 구성하는 다양한 행위자들이 생산한 기념물들은 의미를 실어 나르는 상징이며 광장의 기억-경관을 구성하고 있다. 이 연구에서는 광장의 기념물들과 행위자의 상호관계를 분석함으로써 상징을 통한 정치, 5·18정신과 기억의 신성화를 탐색한다. 특히 광장의 구성 요소들 중 시계탑, 회화나무 소공원, 민주의 종의 조성 과정과 의미를 검토하여 신성화와 상품화를 추동하는 권력 메커니즘을 비판적으로 성찰한다. This study examines the socio-cultural production of May 18 Democracy Plaza, one of the historic sites of the May 18 Democratization Movement, and the interaction between human beings and the objects that make up the historic site mediated by commemorative acts. Exploring the interaction between actors and objects in the plaza can reveal how May 18 is currently represented and the relationship between urban space and the commemorative act of a specific event. The monuments produced by the various actors who make up the May 18th Democracy Plaza are symbols that carry meaning and constitute the memory-scape of the plaza. In this study, by analyzing the interrelationship between the monuments in the square and the actors, this article explore politics through symbols, the sanctification of the May 18 spirit and memory. In particular, it critically reflects on the power of sanctification and commercialization by examining the building process and meaning of the Clock Tower, Chinese Scholar Tree Small Park and Democracy Bell among the elements of the square

표고 톱밥 재배에서 온도와 풍속이 품질에 미치는 영향

Thesis (master`s)--서울대학교 대학원 :원예학과,2001.Maste

Development of a New Navagation System for Automatic Guided Vehicle

본 논문에서는 저 가격으로 실내에 쉽게 장착할 수 있는 자율 주행 로보트의 주행 유도 시스템을 고안하고 이를 구현하였다. 본 시스템의 구조는 선박이나 항공기의 항법 유도 방식인 GPS(Global Positioning System)과 거의 유사한 방식이다. 자율 주행 로보트의 위치를 결정하기 위해서 적외선 센서와 초음파 센서를 이용하였다. 세개 이상의 주행 유도 시스템으로 부터 자율 주행 로보트로 송신된 두 매체의 전달 시간차를 이용하여 이들 간의 거리를 계산할 수 있다. 이 데이타를 이용하여 현재 자율 주행 로보트의 좌표를 계산하였다. 실험 결과는 비교적 실제치와 일치했으며, 본 시스템을 개선한다면 보다 단순한 형태로도 더 정확한 좌표를 계산할 수 있을 것으로 보인다.We designed and implemented a new navigation system which is economic and can be used indoor, for Automatic Guided Vehicle(AGV). The structure of this system is similar to that of GPS which aircraft and ship use in navigation. The system used infrared and ultrasonic sensors to determine the position of the vehicle. The AGV find its position by detecting transmission time difference between infrared and ultrasonic signal from more than three guidance system. Even though experimental results is to close to those we exected, the system is required to improve the accuracy.We designed and implemented a new navigation system which is economic and can be used indoor, for Automatic Guided Vehicle(AGV). The structure of this system is similar to that of GPS which aircraft and ship use in navigation. The system used infrared and ultrasonic sensors to determine the position of the vehicle. The AGV find its position by detecting transmission time difference between infrared and ultrasonic signal from more than three guidance system. Even though experimental results is to close to those we exected, the system is required to improve the accuracy

Development of Fiber-Optic Gyroscope for Automobile Navigation

적당한 성능의 광섬유 자이로스코프는 자동차 주행용의 회전율 측정 센서로 사용할 수 있다. 본 논문에서 구성한 광섬유 자이로스코프 시스템은 개회로 방식의 신호 처리를 하며, 단일 모드 광섬유와 방향성 결합기를 이용하여 시스템을 광섬유 일체식으로 구성하였다. 광원으로는 비편광 광원인 He-Ne ?뮌缺倖? 사용하였다. 자동차 주행용으로 사용할 수 있도록 간단한 구성과 저가격이 되도록 하였다. 본 논문에서는 modified J₁…J₄ 방법을 응용한 신호 처리 방식을 사용하였다. 간섭계 출력을 고속 푸리에 변환(fast Fourier transform : FFT)하여 4 개의 연속 고조파를 구한 다음, modified J₁…J₄를 적용하여 변조도(modulation index)를 구한다. 이 방법은 광원의 파장변동이나 편광 상태의 변화 등에 상관없이 계측할 수 있다. 여기서 구한 변조도를 이용하여 Bessel 함수 ??를 계산한 결과와, 두 고조파의 비로 간단하게 회전율을 구할 수 있었다.Fiber-optic gyroscope of modest performance can be used as angular rate sensor for vechile navigation on land. A practical design is used an open-loop configuration with an all-fiber optical system together with single-mode fiber and directional coupler. We use the unpolarized light source, He-Ne laser as light source, and design simple construction for low cost. In this paper, we used the modified J₁…J₄ method which apply the signal processing technique. Measurements were made of the amplitudes of four harmonics in the electrical spectrum of the output of an interferometer using fast Fourier transform(FFT), and modified J₁…J₄ was used to determine the amplitude of the modulation index. This method allowed us independents of the wavelength fluctuation of the wavelength fluctuation of source and state of polarization changes in measurement. We can simply get the rotation rate with two harmonics ratio, Bessel function, ?? and the modulation depth.Fiber-optic gyroscope of modest performance can be used as angular rate sensor for vechile navigation on land. A practical design is used an open-loop configuration with an all-fiber optical system together with single-mode fiber and directional coupler. We use the unpolarized light source, He-Ne laser as light source, and design simple construction for low cost. In this paper, we used the modified J₁…J₄ method which apply the signal processing technique. Measurements were made of the amplitudes of four harmonics in the electrical spectrum of the output of an interferometer using fast Fourier transform(FFT), and modified J₁…J₄ was used to determine the amplitude of the modulation index. This method allowed us independents of the wavelength fluctuation of the wavelength fluctuation of source and state of polarization changes in measurement. We can simply get the rotation rate with two harmonics ratio, Bessel function, ?? and the modulation depth

식물공장재배 바질과 아이스플랜트의 광합성 및 생육 모델

학위논문 (박사)-- 서울대학교 대학원 : 농업생명과학대학 식물생산과학부, 2016. 2. 손정익.The objective of this study was to develop photosynthesis and growth mod-els of sweet basil and ice plant under plant factory environments. For photo-synthesis, biochemical models coupled with stomatal conductance and tran-spiration were considered. Saturation and compensation points of both plants for light and CO2 were determined by regression analyses of light and CO2 response curves, respectively. In the photosynthesis of sweet basil, non-rectangular hyperbola was the most suitable for The saturation and compensation points for light and CO2 were determined as 545.3, 26.5, 728.8 and 85.05 μmol·m-2·s-1, respectively, by the modified non-rectangular hyperbola model. The maximum carboxylation rate, potential rate of electron transport, and rate of triose phosphate utilization calculated by Sharkey’s regression were 102.6, 117.7, and 7.41 μmol·m-2·s-1, respectively. The results showed that the coupled biochemical model was effective for predicting the photosynthesis of sweet basil leaves comparing to other descriptive models. For ice plant under plant factory environments, the saturation and compensation points for light and CO2 were 569.5, 56.02, 632.9, and 117.2 μmol·m-2·s-1, respectively. The maximum carboxylation rate, potential rate of electron transport, and rate of triose phosphate utilization were calculated as 222.3, 234.9, and 13.0 μmol·mol-1, respectively. The parameters of minimum stomatal conductance of water vapor at the light compensation point and empirical coefficient in the BWB model could be solved as 0.0487 and 0.0012, respectively. Finally, the growth models for temperature and CO2 concentration were developed by using an expo-linear model. Adequate air temperature and CO2 concentration for sweet basil and ice plant were 25oC and 800 μmol·mol-1, respectively. From this study, the coupled biochemical model was more effective for explaining the photosynthesis of sweet basil and ice plant during the juvenile stage under plant factory conditions.INTRODUCTION 1 LITERATURE REVIEW 5 Photosynthesis model 5 Growth model 7 Literature Cited 9 CHAPTER I. Development of a Coupled photosynthesis model of sweet basil hydroponically grown in plant factories 12 Abstract 12 Introduction 15 Materials and Methods 19 Results and Discussion 28 Literature Cited 45  CHAPTER II. Development of a coupled model of photosynthesis and stomatal conductance for ice plant, a faculta-tive CAM plant in plant factories 48 Abstract 48 Introduction 51 Materials and Methods 55 Results and Discussion 65 Literature Cited 81 CHAPTER III. Growth modellings of sweet basil and ice plant us-ing expo-linear functions in plant factories 84 Abstract 84 Introduction 86 Materials and Methods 89 Results and Discussion 94 Literature Cited 110 CONCLUSION 112 ABSTRACT IN KOREAN 114Docto

A Study on a Network for Multinodes Operation(FA)

본 연구에서는 멀티노드 시스템의 자동화를 위한 네트워크를 구성하고, 지능형 범용 제어기를 개발하였다. 통신 프로토콜이 우수하고 경제성이 뛰어난 Echelon사의 LON(Local Operating Network) 기술을 이용해 네트워크를 구축하였으며, 개발한 제어기에서는 범용성과 기능의 확장을 위해 Intel사의 16Bit One Chip Microprocessor인 80C196KC를 이용하였다. LON 시스템과 프로세서와의 통신을 위해 Token Passing 프로토콜을 이용한 Firmware를 개발했으며 각 노드를 운용하기 위한 80C196KC용 운용 프로그램을 개발했다. 개발한 지능형 범용제어기의 실험을 위해 온도 및 레벨 제어가 가능한 소형 네트워크 시스템을 구축하고 시뮬레이션 하였다. 또한 시스템 상황을 제어하고 감시하기 위해 Windows 환경의 모니터링 시스템을 구축하였다.In this paaper, we proposed a network for multi-node system automation, and developed intelligent universal controller. For this work, we used LON technique having powerful protocol and cost effective, and developed an intelligent universal controller with Intel One chip microprocessor 80C196KC to increase versatility and to guarantee reliability. We developed firmware using token passing protocol for communication between LON system and intelligent controller, and built 80C196KC program to control each node. To evaluate the intelligent controller, we applied it to a small network system which is able to control the level and the temperature. To control the system and to monitor its condition, we set up a monitoring system which is operated under Windows environment.In this paaper, we proposed a network for multi-node system automation, and developed intelligent universal controller. For this work, we used LON technique having powerful protocol and cost effective, and developed an intelligent universal controller with Intel One chip microprocessor 80C196KC to increase versatility and to guarantee reliability. We developed firmware using token passing protocol for communication between LON system and intelligent controller, and built 80C196KC program to control each node. To evaluate the intelligent controller, we applied it to a small network system which is able to control the level and the temperature. To control the system and to monitor its condition, we set up a monitoring system which is operated under Windows environment

A Study on the improvement of equity in the public open space bonus provision

학위논문(박사)--서울대학교 대학원 :도시공학과,1998.Docto

Optical Fiber Sensor System which can achieve Common Mode Compensation automatically

자동으로 공통모드 보상이 가능한 광섬유 센서 시스템을 구현하였다. 시스템은 변형된 마크-젠더 간섭게, 신호처리 및 데이터 획듣회로, 위상조절회로 그리고 공통모드 보상을 수해하는 알고리즘이 내장된 PC로 구성된다. 제안된 간섭계에서는 감지회로와 보상회로로 구성되어 감지회로에서는 우리가 원하는 물리제량을 측정하고 보상회로는 공통모드 보상이 가능하도록 하는 회로이다. 감지회로?? 초기 위상이 결정되면 PC에서는 공통모드 보상이 가능한 동작점을 결정하여 그 값을 보상회로의 위상조절회로에 인가하여 공통모드 보상이 가능하게 된다. 모든 실험결과는 이론치와 일치하였다.We implemented an optical fiber sensor system which can achieve common mode compensation automatically. The system consists of modified Mach-Zehnder Interferometer, signal processing and data acquisition circuit phase modulator and personal computer that provide an algorithm for common mode compensation. The modified interferometer consists of sensing circuit and compensating circuit. The sensing circuit measured the measurand and the compensating circuit provide common mode compensation with phase modulator. All experimental results agree with those expected.We implemented an optical fiber sensor system which can achieve common mode compensation automatically. The system consists of modified Mach-Zehnder Interferometer, signal processing and data acquisition circuit phase modulator and personal computer that provide an algorithm for common mode compensation. The modified interferometer consists of sensing circuit and compensating circuit. The sensing circuit measured the measurand and the compensating circuit provide common mode compensation with phase modulator. All experimental results agree with those expected

Design and Implementation of Rate-Based Traffic Controller for Performance Improvement of FA-Networks Employing LonWorks

As the interest of flexible manufacturing systems and computer integrated manufacturing systems increase, the distribution of centralized control systems using industrial control networks is getting more attention. In this paper, we investigate the rate-based traffic control of industrial control networks to improve the performance regarding the throughput, fairness, and error rates. Especially, we consider the protocol of Lon-$Works^{(TM)}$ which consists of all OSI 7-layers and supports various communication media at a low cost. Basically, the proposed rate-based traffic control system is closed loop by utilizing the feedback channel errors, which shows improved performance when compared with other industrial control networks commonly operated in open loop. To this end, an additional network node called monitoring node is introduced to check the channel status without increasing the channel load. The Proposed control loop is in effect whenever the feedback channel error becomes greater than an admittable value. We demonstrate the improved performance of the controlled network system in view of throughput and fairness measures by implementing the lab-scale network system based on LonWorks and through the experimentation upon it

Design and Implementation of Programmable Digital Filter

디지탈필터의 계수 및 종류에 무관한 고속 디지탈 필터를 처리하기 위한 programmable processor를 설계하고, 이의 효율을 산출하였다. μP를 사용하므로 필터변동에 따라 프로그램으로 처리하여 flexibility를 유지하면서 TTL logic으로 프로세서 처리속도를 실시간에서 가능하도록 하였다. Sampling frequency, f?=1/(number of instruction)*(cycle time)으로 cycle time에 반비례한다. 구성된 회로의 cycle time은 210ns로, IC로 제작되면 더욱 단축가능하고 일반μP 와 직접연결이 가능하다. 제안된 프로세서는 기존회로보다 2배의 증가된 효율을 얻었고, 간단한 회로구성이 가능하다.The digital signal processing requires high speed computation capability in real time processing. Many dedicated hardware processors are based on pre-calculated coefficients or its unique architecture. This paper describes the architecture of programmable digital filter with a distributed configuration using μP 8086. The processor accepts the microprogram from the μP to execute the algorithm. The sequence of microprogram is executed sequentially in order to simplify the processor circuits, and muliplication is replaced by the series of addition, substraction and shift operations simultaneously. The experimental results offer better efficiency than other multiplier in practical bit size. This structure provides a good flexibility through, μP and high speed computation with TTl logic family. The cycle time is 210ns so multichannel processing could be implemented depending on the length of program.The digital signal processing requires high speed computation capability in real time processing. Many dedicated hardware processors are based on pre-calculated coefficients or its unique architecture. This paper describes the architecture of programmable digital filter with a distributed configuration using μP 8086. The processor accepts the microprogram from the μP to execute the algorithm. The sequence of microprogram is executed sequentially in order to simplify the processor circuits, and muliplication is replaced by the series of addition, substraction and shift operations simultaneously. The experimental results offer better efficiency than other multiplier in practical bit size. This structure provides a good flexibility through, μP and high speed computation with TTl logic family. The cycle time is 210ns so multichannel processing could be implemented depending on the length of program