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Interior graphic design is a modern plastic style and also a form of a culture just as a supergraphic design. Especially, this functions to activate indoor space formative, exalts human's emotion and moreover it has a unction satisfying our esthetic needs with psycological stablity. Comparing with these significance of interior graphic design, they were introduced relatively late in our country, and its Quality is no good in the actual circumstance. In addition, on account that it is hard to find them except in some places like kindergardens or substitutional school니, we are actually not able to support a good quality educational fields through them. According to the construction of he new building for college of science and engineering in Myongji University, I am trying to present an interior graphic design corresponding to the point of producing better indoor educational space.
High capacity optical transmission and network system in these days are mainly based on WDM(Wavelength Division Multiplexing) technologies. Photonic switching that cope with these high capacity WDM signals also should be operated in WDM domain. Therefore, optical buffer that are indispensible for photonic switching have to be a WDM structure. In this paper, we discuss various WDM optical buffers in terms of their structure, function, and specific features. More over, we introduce novel ultra high capacity WDM output buffer and WDM output shared buffer with analysis.
In this journal, the novel fabrication method of SOI optical device with chemically polished end-fact and integrated single mode optical fiber self-aligned structure at both waveguide ends is investigated. In order to accomplish this method, MEMS fabrication technologies, chemically anisotropic etching by ODE(Orientation dependent etches) characteristic of (100) silicon using 45wt% KOH is used. Optical waveguide was fabricated along <100> direction of (100) SOI and self-alignment structures was made between SOI waveguide and core of SMF(Single More Fiber) at each end-facet of SOI optical waveguides. Self-aligned optical fiber structure is jig-jag shaped V-groove and its groove makes angle of 90 degree along <010> direction. SiNx thin film is used to etching mask by PECVD method, AZ1512K/ AZ4210 PR for lithography. Etching mask patterning was done by RIE dry etcher. And got bath was used for KOG wet etching. As a result, this fabrication method of SOI device saves time for aligning fiber to waveguide and makes chemically polished waveguide end-facet at a time. This method will be so useful to mass-production of optical devices for future optical network. SOI wafer used in this process is has 10㎛-thickness of upper Si layer and 2㎛ thickness of buried oxide layer. and I determine the scales that meets the single mode condition. Single mode optical waveguide(width:9㎛, etched depth:2.5㎛) and fiber self-alignment structure at both chemically polished end facet of waveguide were fabricated.
This article discuss for some schemes that previously had proposed for surveys of a fault-telerance technique. Fault-tolerance is the very important issue for reliable communication Hence, to construct network system which has a robust we must set up fault models and consider fault location for faulty models and build up full fault-free network through system reconfiguration. Fault mode1s can be considered under variety fault conditions and we can realize fault to1erance with applying the appropriate fault diagnosis procedure. In this artic1e as set up test set( t= 01,t= 10) and two task phases, we discuss for technique that diagnose any faulty models with irregular interconnection network, which differs from regular one, previously used to deal. And we introduce an algorithm for other interconnection networks to fault diagnosis.
The development of information technology, which has brought the fusion of broadcasting ana telecommunication, wire and wireless communication and voice and data, is developing new fusions like home network which is composed of IT, construction, and home appliances. This trend is considered to continue and to make other new fusions based on previous ones. In this study, we investigate the fusion frameworks using platform view and service view. We finally show some prototypes based on the frameworks.
최근 기업활동의 자재구매, 제조, 보관 및 운송, 유통/판매까지 포함한 공급체인 전체에 대해 통합관리가 중요한 과제로 부각되고 있다. 현대의 고객들은 제품이나 납기, 품질과 같은 부문에서 높은 서비스를 받고 싶어한다. 이에 따라 오늘 날의 대부분의 기업들은 고도의 기술을 요하는 정보시스템의 도입과, POS, Data Mining 등과 같은 기술들을 이용하고 고객의 요구사항들을 적시, 적소에서 파악하여 고객이 요구하는 상품과 서비스를 공급하기 위하여 최선의 노력을 다하고 있다. 최초의 공급자로부터 소비자까지 상품이 전달되는 과정 중에서 재고와 물류기용은 모든 비용의 대부분을 차지하고 있다. 이에 대한 비용을 줄이려고 하는 것이 공급체인관리(SCM)의 기본적인 목적이라 하겠다. 이에 본 논문에서는 공급체인관리(SCM)에 대한 개념과 배경, 필요성 등을 정리하고 주요 SCM solution에서 제공하는 기능 및 사용된 방법론을 분석하여 이를 바탕으로 주문 접수 시 주문물량의 가능납기를 산정하기 위한 입력데이터, 고려요소, 연산절차 등을 포함한 ATP(Available to Promise) 모델을 제시한다.
It is said that a large part of losses by company is attributed to the loss manpower material resources by industrial accident. To alleviate industrial accident, machine-oriented safety supervision is superior to that of manpower-oriented in spite of diversified efforts, in many aspects. It will not secured a sense of safety if people can not utilize machines correctly despite excellent machines. As a part of preventing industrial accident, industrial safety education is aimed to improvement of productivity of company through exact research of actual condition of industrial safety education.
The Bluetooth system is a short distance wireless data communication standard that European mobile communication terminal companies get into main axis. This technology is developed by a SIG whose members are more than 2000. Devices of the system can transmit signals at the speed of 1 Mbps from 10 m to 100m using 2.4 GHz frequency. We investigate the protocol stack of the Bluetooth system as well as its main features. Then, we identify several problems of the system.
It is recently recognized that ubiquitous computing revolution has been already beginning at various fields of industry. It is not exceptional in civil engineering. The primary reason is that, as the next generation of information technology (IT), certainly, it will be a very important kernel to provide extreme advantages to human beings in the future. Therefore, the fundamental concept of ubiquitous technology is introduced and reviewed. Also the possibility of application to civil works is investigated in this study. In addition, some elementary monitoring devices with this concept are, as example, designed to apply at the construction site.
In this study, we report the characteristics of three Kinds of Radar Exploration Systems, which are used in geological cavity detection, for effective use. The systems are RAMAC, PEMSS and KAIST CW. We repeated measurements each system for same geological model. The AMAC System has a unique capability in finding fracture zones from the reflected waves, and represents the cavity as a hyperbola because the cavity responds as a point source. In the PEMSS systems the relative velocity and attenuation of the electromagnetic wave which varies by geological medium represents geological structures. The main merit of the PEMSS system is cavity localization. The location of the cavity is determined the depths of cavity signals in each offset data. The KAIST CW system also detects a cavity from the attenuation pattern of continuous waves. This uses the phenomenon of 180'phase change of the wave when it propagates the cavity, producing the high attenuation at that point. Our study shows that the RAMAC is suitable in cavity scanning, the PEMSS is adaptive in precise geology exploration, and KAIST CW is best in cavity detection.