• 한국소음진동공학회논문집
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• 제26권2호
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• pp.130-140
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• 2016

Floating floor is most commonly used at apartment houses in Korea for thermal insulation and reducing impact noise. But it in proven that the floating floor is not effective for reducing the floor impact noise in low frequency range. In most cases, impact sound pressure level under 63 Hz frequency band were actually increased by the resonance of resilient material, lightweight concrete and the finishing mortar installed on it. In this paper, an integrated floor system consist of 70 mm light weight concrete and 40 mm finishing mortar successively installed on the concrete slab was suggested to avoid the resonance. Integrated floor system increases total flexural stiffness and mass per unit area. The natural frequencies of first and second vibration mode were increased and acceleration response and floor impact sound level was decreased in all measurement range.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.1007-1012
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• 2004

To increase the productivity and efficiency of an enterprise, all relevant product information should be provided to shop floor workers timely and in a unified form because shop floor workers are final consumers of most accumulated information generated from various departments of an enterprise. but, most existing enterprise information systems have an emphasis upon providing design/manufacturing information to office workers. Proposed in this study is a development of integrated design/manufacturing information system focused system, the function required for shop floor activities. For developing integrated information system, the functional required for shop floor are identified and analyzed. Based on the extracted functional requirements, object-oriented system design and implementation is conducted. By using this system, shop floor workers can refer to all relevant information necessary to their work easily and in a integrated form.

• 설비공학논문집
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• 제14권2호
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• pp.143-152
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• 2002

It is critical for radiant floor cooling system using Ondol to cause condensation on a floor surface. To solve this problem, a radiant floor cooling system integrated with dehumidification was proposed and evaluated in terms of its applicability and prevention of condensation. Therresults show that the proposed system of radiant floor cooling integrated with dehumidification properly maintained the indoor setpoint temperatures and prevented the condensation on a floor surface. To achieve more stable indoor temperatures and humidity control, a further study for the operation of dehumidification panel will be needed.

• 한국CDE학회논문집
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• 제10권4호
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• pp.237-243
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• 2005

To increase the productivity and efficiency of an enterprise, all relevant product information should be provided to shop floor workers timely and in a unified form because shop floor workers are final consumers of most accumulated information generated from various departments of an enterprise. But, most existing enterprise information systems have an emphasis upon providing design/manufacturing information to office workers. Proposed in this study is the development of integrated design/manufacturing information system focused on providing cohesive information required to shop floor activities. For developing integrated information system, the functional requirements at the shop floor are identified and analyzed. Based on the extracted functional requirements, object-oriented system design and implementation is conducted. By using this system, shop floor workers can use all relevant information required to their daily operation in a integrated and unified form.

• 한국주거학회논문집
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• 제15권2호
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• pp.107-115
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• 2004

The objective of this study is to show the system Integrations and control method for operation of the Radiant Floor Cooling. The systems for radiant floor cooling system consist of only using the radiant floor cooling and the radiant floor cooling integrated with a dehumidification system. And the study is suggested control method with composed radiant floor cooling system through simulations. Radiant floor cooling systems compose of four main parts: an existing radiant heating panel, manifold, cooling source and controller, and sensors. If dehumidifying or supplementary cooling is needed, additional equipments such as PAC and AHU are needed. Simulation results show that control method only using radiant floor cooling system can prevent condensation and set room air temperature with the exception of hot and humid periods and control method using the radiant floor cooling integrated with a dehumidification system is comfort thermal environments and can reduce the cooling load quickly, moreover, show comfort control method to meet various cooling operation situations.

• Journal of Mechanical Science and Technology
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• 제15권5호
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• pp.544-554
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• 2001

A shop floor can be considered as an important level to develop Computer Integrated Manufacturing system (CIMs). However, a shop floor is a dynamic environment where unexpected events continuously occur, and impose changes to the planned activities. To deal with this problem, a shop floor should adopt an appropriate control system that is responsible for the coordination and control of the manufacturing physical flow and information flow. In this paper, a hybrid control system is described with a shop floor activity methodology called Multi-Layered Task Initiation Diagram (MTD). The architecture of the control model contains three levels: i.e., he shop floor controller (SFC), the intelligent agent controller (IAC) and the equipment controller (EC). The methodology behind the development of the control system is an intelligent multi-agent paradigm that enables the shop floor control system to be an independent, an autonomous, and distributed system, and to achieve an adaptability to change of the manufacturing environment.

• ETRI Journal
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• 제36권1호
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• pp.171-174
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• 2014

In weighted bit-flipping-based algorithms for low-density parity-check (LDPC) codes, due to the existence of overconfident incorrectly received bits, the metric values of the corresponding bits will always be wrong in the decoding process. Since these bits cannot be flipped, decoding failure results. To solve this problem, an improved parallel weighted bit flipping algorithm is proposed. Specifically, a reliability-saturation strategy is adopted to increase the flipping probability of the overconfident incorrectly received bits. Simulation results show that the error floor of LDPC codes is greatly lowered.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1996년도 춘계공동학술대회논문집; 공군사관학교, 청주; 26-27 Apr. 1996
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• pp.619-622
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• 1996

This paper presents the formal integration of process planning and shop floor control with Petri net formalism. Formal integration means that both planning and control problems can be modeled, interfaced, and transformed with the Petri net formalism. This integrated framework provides a systematic approach for rapidly developing a formal shop floor controller from process planning with respect to shop floor configuration.

• 한국산학기술학회논문지
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• 제20권8호
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• pp.271-278
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• 2019

본 연구는 현대의 대표적인 주거양식인 아파트 공간과 우리 전통미를 살린 한옥표준평면도의 공간 배치 등을 비교 분석한 것이다. 연구 방법은 객관적인 분석을 위하여 공간구문론(Space Syntax)을 이용하여 각공간의 특성을 분석하였다. 연구결과는 다음과 같다. 1) 아파트 공간은 생활의 편리함과 용도의 명확한 구분 때문인지 공간이 세분화된 반면에 전통한옥 평면은 각 실이 다양한 용도로 사용함에 따라 아파트보다 각 실의 공간이 세분되지 않았다. 2)한옥평면도에서 대청이 거실로 변화하였을 뿐 두 평면도 모두 시대의 변화에도 불구하고 거실공간이 통합도가 가장 높았다. 3)한옥공간은 서로 공간이 통하는 통합성 성격이 강하지만 현대화된 한옥표준설계도는 분격성 공간의 성격이 강한 것으로 분석되었다. 4)일반적인 생각과 달리 아파트에서 안방의 통합성이 높았고 한옥평면도에서는 침실과 안방은 분격성이 높았다. 5)한옥평면도에서는 옛날과 달리 툇마루의 기능이 많이 감소한 반면에 사랑방에 부속된 누마루가 분격성 공간으로 분류되었다. 아파트에서는 피난공간이 분격성이 가장 높은 것으로 분석되었다. 즉 한옥표준설계도는 현대의 생활에 적응하면서 변화되어 있었다.

• 한국실내디자인학회논문집
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• 제26권3호
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• pp.121-129
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• 2017

The study is to identify the status of the ward of public hospital for integrated nursing care service. Integrated nursing service has expanded nationwide from 2016 but 10 out of 34 public hospitals are currently unable to operate as nurses due to the shortage. Analyze each floor plan and space program of ward and provide the basic data for the construction of the architecture plans for Integrated nursing care service. For this study, selecting 14 wards of public hospital in Korea and then analyzes space organization, distance from NS to bedroom and NS to core(Elevator) and spatial hierarchy of them. Among the 14 public hospitals, there are 7 types of double-loaded corridor, 4 types of double corridor and 3 types of single corridor. If NS is placed centrally, the control of the outsider and the patient's control would be efficient, but most of NS are lean on one side of floor. the placement of NS should be independent of individual arrangements, but it should be smooth alignment with patient spaces, staff spaces, and public spaces. This study could serve as basic research for the architectural plan for future integrated nursing care in ward of public hospital.