• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 1999년도 춘계종합학술대회
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• pp.93-98
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• 1999

본 논문에는 DICOM Converter를 구현하여 새로운 장비를 구입하지 않고, 기존의 장비를 이용해 DICOM 표준안 영상으로 변환할 수 있게 하였다. 그리고 클라이언트/서버 모듈 부분에서 한 시스템 내에서 SCU 와 SCP를 동시에 수행할 수 있어 중소 병원에 적합한 단계적인 PACS 시스템을 구축할 수 있다. 또한 Web 상에서의 환자정보, 영상정보, 검사정보, 그리고 장비정보와 같은 DB 연동을 할 수 있어 점진적으로 확장 및 통합이 가능한 소형의 부분적인 시스템을 구현하였다 결과적으로, 본 시스템은 안정된 개방형 시스템을 기반으로 하였기에 가격을 낮추었을 뿐 아니라 투자에 대한 실패를 크게 감소시키었다.

• 디지털융복합연구
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• 제13권5호
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• pp.195-204
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• 2015

본 논문은 New Module장치를 융합한 탄산수 정수기에 대한 CTQ(Critical to Quality)를 도출, QFD기법을 활용하여 소비자의 요구사항을 반영한 핵심 품질요소를 도출하는데 목적이 있다. 시음 대상자, 일반소비자와 New Module장치를 개발한 개발자를 대상으로 설문조사와 FGI(Focus Group Interview)를 실시하여 VOC(Voice of Customer)를 도출, 개발자를 통해 EC를 도출하여 VOC와 EC(Engineering Characteristic)간의 상간관계를 도표화하여 HOQ(House of Quality)를 작성하였다. HOQ 차트를 통해 탄산수 정수기는 일정한 맛, 소음, 출수량, CO2 실린더 교체주기, 사용 편리성 등의 요소가 중요한 품질요인이라는 결과를 도출 하였다. 부품별 요인으로는 물의 맛과 관련된 Module 장치 (혼합조)와 이와 밀접한 레귤레이터, 부스터펌프, 솔레노이드가 가장 핵심부품으로 고려해야 한다는 결과를 도출 하였다.

• 한국전기전자재료학회논문지
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• 제25권3호
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• pp.241-246
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• 2012

A layered planer SOFC module was designed from planar-type SOFC. It was prepared by multi-layered ceramic technology. To form the cathode and the anode in the layered structure, reliable channels should be made on the both side of electrolyte perpendicularly. However, monolithic SOFC using multi-layered ceramic technology hasn't been studied another group, and the warpage of electrolyte in the channel, also, hasn't been studied, when electrode is printed on the electrolyte. In this study, the channels are prepared with electrode printing, and their warpage are evaluated. In the case of YSZ without electrode, the warpages are nothing in the limit of measurement using optical microscope. The warpage of 'YSZ-NiO printed' increases than that of 'NiO printed', and also, the case of 'double electrode printed' is similar to 'YSZ-NiO printed'. It is thought that, in the printed electrolyte, the warpage is related to the difference of the sintering behavior of each material.

• KIEAE Journal
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• 제17권1호
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• pp.15-21
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• 2017

Purpose: This study was on the economic feasibility of BIPV system, focused on comparison with construction cost of BAPV system depend on roof finishing materials, and to suggest basic data on the construction cost. Method: Construction cost of BAPV system was calculated, by selecting asphalt single, flat type roof tile, color steel plate, titanium zinc plate as roof finishing material of residential building and by sum up each cost for roof finishing construction and cost for 3kWp-volumed PV module installation. Also, the economic feasibility was analysed quantitatively by comparing the cost for BIPV system construction, installing same volumed PV module instead of roof finishing materials. Result: 1. By installing BIPV system instead of the roof finishing material, the cost of construction falls ; about 19% in case of the titanium zinc plate, which is the most expensive, and about 11% in case of the color steel plate. 2. Reducing amount of the construction cost gets larger because of installing BIPV module instead of the roof finishing material, as the construction cost for roof finishing material gets higher ; therefore, it is more economical than BAPV system in terms of whole cost of construction.

• 정보학연구
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• 제7권3호
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• pp.127-137
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• 2004

본 연구에서는 프로젝트의 계획단계에서 프로젝트 관리자가 수행해야 할 프로젝트에 대하여 규모, 범위, 기간, 성격 등의 측면에서 가장 유사한 과거의 사례를 찾아주고 이를 참조하여 WBS를 설계할 수 있도록 규칙과 사례기반 추론에 근거한 프로젝트 계획수립 지원모듈(PPSM: Project Planning Support Module)개발 방법을 제안한다.

• 한국안광학회지
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• 제13권4호
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• pp.95-101
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• 2008

목적: 본 연구는 양안의 시지각 및 시기능 훈련의 도구로 활용이 가능한 양안 시지각 훈련 프로그램을 제안한다. 방법: 양안 시지각 훈련 시스템을 모듈별로 설계하였고, 입체시와 버전스 훈련이 가능한 입/출력 모듈을 구현하였다. 결과: 본 훈련 프로그램은 입력모듈의 경우, 주시시차의 계산을 통해 인지 거리를 추정할 수 있으며 오차는 5% 미만이었다. 출력모듈의 경우는 28명의 훈련자를 대상으로 입체감 및 깊이인지에 대한 평가를 수행하였고 완전한 입체감을 경험하는 것으로 나타났다. 결론: 따라서, 본 연구에서 제안하는 양안 시지각 훈련프로그램은 시기능 훈련의 도구로 활용이 가능할 것으로 판단된다.

• 대한수학회보
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• 제59권4호
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• pp.917-928
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• 2022

Let R be a commutative Noetherian ring and I an ideal of R. In this paper, we study colocalization of generalized local homology modules. We intend to establish a dual case of local-global principle for the finiteness of generalized local cohomology modules. Let M be a finitely generated R-module and N a representable R-module. We introduce the notions of the representation dimension r^I(M, N) and artinianness dimension a^I(M, N) of M, N with respect to I by r^I(M, N) = inf{i ∈ ℕ₀ : H^I_i(M, N) is not representable} and a^I(M, N) = inf{i ∈ ℕ₀ : H^I_i(M, N) is not artinian} and we show that a^I(M, N) = r^I(M, N) = inf{r^IR_𝔭 (M_𝔭,𝔭N) : 𝔭 ∈ Spec(R)} ≥ inf{a^IR_𝔭 (M_𝔭,𝔭N) : 𝔭 ∈ Spec(R)}. Also, in the case where R is semi-local and N a semi discrete linearly compact R-module such that N/∩_t>0I^tN is artinian we prove that inf{i : H^I_i(M, N) is not minimax}=inf{r^IR_𝔭 (M_𝔭,𝔭N) : 𝔭 ∈ Spec(R)＼Max(R)}.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.411-414
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• 2015

The purpose of this study is to conduct a comparative analysis between Korea and the United States of the supply process of unit modular housing at both the factory production phase and the transportation and lifting phase, as part of an attempt to invigorate the unit modular housing market in Korea. Unlike the practice in the United States, one of Korea's unique characteristics is that the floor is constructed with reinforced concrete and hot water heating system. To do this, the wet method in Korea is used that includes concrete placement, curing and constructing hot water floor heating system at the factory production phase, which results in a longer production time and also requires the lifting of heavier loads. In the United States, interior and exterior finishing works of modular housing are performed by different companies, and the distance between the unit module factory and the construction site is quite far. This kind of dualized production structure may cause confusion when it comes to schedule management, procurement management, and stock management. Moreover, problems caused by external environmental factors such as wind and rainfall were reported in the course of long-distance transportation. The results of this case comparison are expected to provide fundamental data that will reduce the amount of trial and error in the unit module production, transportation and lifting work in Korea, which has a comparatively small number of unit modular housing cases.

• Smart Structures and Systems
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• 제21권6호
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• pp.715-725
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• 2018

Truss-Z (TZ) is an Extremely Modular System (EMS). Such systems allow for creation of structurally sound free-form structures, are comprised of as few types of modules as possible, and are not constrained by a regular tessellation of space. Their objective is to create spatial structures in given environments connecting given terminals without self-intersections and obstacle-intersections. TZ is a skeletal modular system for creating free-form pedestrian ramps and ramp networks. The previous research on TZ focused on global discrete geometric optimization of the spatial configuration of modules. This paper reports on the first attempts at structural optimization of the module for a single-branch TZ. The internal topology and the sizing of module beams are subject to optimization. An important challenge is that the module is to be universal: it must be designed for the worst case scenario, as defined by the module position within a TZ branch and the geometric configuration of the branch itself. There are four variations of each module, and the number of unique TZ configurations grows exponentially with the branch length. The aim is to obtain minimum-mass modules with the von Mises equivalent stress constrained under certain design load. The resulting modules are further evaluated also in terms of the typical structural criterion of compliance.

• Journal of international Conference on Electrical Machines and Systems
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• 제2권1호
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• pp.97-103
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• 2013

This paper describes the characteristics of Electronic Throttle Controller (ETC) module in BLDC motor without the hall sensor for detecting a rotor position. The proposed ETC control system, which is mainly consisted of a BLDC motor, a throttle plate, a return spring and reduction gear, has a position sensor with an analogue voltage output on the throttle valve instead of BLDC motor for detecting the rotor position. So the additional commutation information is necessarily needed to control the ETC module. For this, the estimation method is applied. In order to improve and obtain the high resolution for the position control, it is generally needed to change the gear ratio of the module or the electrical switching method etc. In this paper, the 3-phase switching between successive commutations is adapted instead of the 2-phase switching that is conventionally used. In addition, the position control with a variable PI gain is applied to improve a dynamic response during a transient period and reduce vibration at a stop in case of matching position reference. The mentioned method can be used to estimate the commutation state and operate the high-precision position control for the ETC module and the high response characteristics. The validity of the proposed method is examined through the experimental results.