• 아동학회지
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• 제12권2호
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• pp.146-153
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• 1991

Cette ${\acute{e}}tude$ a pour but d'analyse perceptive de la prosodie au cours de l'apprentissage du langage chez l'enfant de 7 $\acute{a}$ 34 mois. C'est $bas{\acute{e}}$ sur deux tests auditifs : $Pr{\acute{e}}test$ auditif et test auditif approfondi, Cet dernier porte sur 158 $s{\acute{e}}quences$ $diff{\acute{e}}rentes$. Nous avons ainsi ${\acute{e}}tabli$ rapports possibles entre structures prosodiques et ${\acute{e}}tapes$ de l'acquisition du langage. Nous $d{\acute{e}}gagons$ en conclusion que l'acquisition prosodique s'est $achev{\acute{e}}e$ plus $t{\hat{o}}t$ que les autres ${\acute{e}}l{\acute{e}}ments$ linguistiques.

• 한국구조물진단유지관리공학회 논문집
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• 제5권1호
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• pp.141-148
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• 2001

Dynamic compaction is the ground improvement method by applying the impact energy. This impact energy can damage to adjacent structure in urban area. Therefore, if dynamic compaction method is applied, careful attention should be payed to surrounded structures. In this study, the method was performed in waste landfill and the frequency of vibrations were measured according to each distances, drop-heights, and vibrating directions. The measured data show that particle velocity bas low frequency and it is greatest in longitudinal direction. There was little differences between Maynes suggestion and measured data. Therefore, Maynes suggestion can be adopted if the range of vibration can be predicted. Also, It was found that minimum 45m distance is needed in order to satisfy the administrative code if dynamic compaction method is applied.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 D
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• pp.2410-2415
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• 2000

This paper propose the new concept & design method and implementation of LonWorks network system for telemetry & remote monitoring and control in BAS. In order to apply this open system, the essential components of LonWorks is analyzed and a new concepts of its design method is proposed. In our experiment, LonWorks network system for telemetry & remote monitoring and control of lighting are designed and fabricated. As a result, it is verified that LonWorks is open, interoperable, reliable network system from the experimental results, especially, node development, network configuration & design, secure communication and MMI.

• 한국기계가공학회지
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• 제7권1호
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• pp.9-16
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• 2008

It is important not only to reduce the casting defects of piston but also to improvement in the mechanical properties(hardness) of piston for the air compressor. The blow hole is typical casting defects in the conventional cast of aluminium alloy(AC8A-T6) piston. Because of the heat treatment method, mechanical properties of the aluminium alloy for piston was decided on the heat treatment method and cycle. Therefore, we tested on the development of mechanical properties and on the casting defects of piston for the air compressor in accordance with the heat treatment and casting condition. After the heat treatment and casting was carried out as several times, and was compared with the imported piston. As a result of several investigations; microstructure, hardness and casting defects of piston was changed under the influence of the heat treatment and casting method. When the cooling rate was controlled and the uni-cast method used, it bas the same mechanical properties and microstructure.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 1999년도 춘계 학술발표회 논문집 Proceedings of EESK Conference-Spring
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• pp.169-177
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• 1999

The base shear force and the overturning moment are important factors for the earthquake design of a structure. These should be predicted exactly especially when the nonlinear seismic isolation bearings are used against earthquake motions. Generally these are derived by the acceleration responses of a structure with the he assumed masses. However these can be contaminated by the noise in the measured responses and the uncertainty of assumed masses. This paper presents the results of the derived base shear force and overturning moment compared with the measured results by multi-axis load cells. Also discussions are made on the cross-coupling effects of the multi-axis load cell.

• 대한기관식도과학회지
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• 제3권2호
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• pp.313-317
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• 1997

Airway mucus provides the protective functions such as lubrication, barrier, disposal of trapped materials, and humidification. In the normal state, the mucus do not interfere with Bas transport and the other vital functions of lung. In diseases such as asthma, bronchitis, and cystic fibrosis, the mucus hypersecretion was physiologically developed in the response of multiple neurohumoral mechanism system. And regardless of the mechanism, many clinical sequelae result from mucus hypersecretion: atelectasis, infection, increased airway resistance, increased work of breathing, increased cough with its resultant complication. And the condensation of mucus tv mucus hypersecretion can make the mucus plug by which bronchial obstruction is developed. We have experienced a 7 Pear-old male patient with recurrent pneumonic symtom, which the bronchial obstruction was developed by the impacted mucus plug on the bronchoscopic finding. We report this case with the review of literature.

• 정보와 통신
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• 제21권4호
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• pp.74-89
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• 2004

인터넷전화는 PC-to-Phone 혹은 Phone-to-Phone 형태로 제공되어 왔으나 품질, 사용의 불편함, 표준 착신번호의 부재 등으로 인해 활성화되지 못하였다. 그러나 올해를 기점으로 인터넷 전화역무가 도입되어 상기와 같은 문제가 일정부분 해결되면 인터넷전화시장은 급성장할 것으로 전망하는 전문가가 적지 않다. 본 고에서는 인터넷전화서비스의 시장 현황과 전망을 다룬다. 특히 인터넷전화시장의 전망을 가정고객의 가입 수요 확산 관점에서 살펴본다. 이를 위해 전문가 설문을 통해 인터넷전화의 활성화 이슈에 대해 살펴보고 이를 근거로 시나리오 기법과 Bass의 확산모형을 적용하여 수요예측을 실시한다. 즉 활성화 이슈를 중심으로 총 4개의 시나리오를 도출하고 각 시나리오에서 확산계수를 비교유추법으로 추정한다. 마지막으로 시나리오별로 도출된 확산과정은 전문가 설문의 결과와 비교하여 실현 가능성이 보다 높은 확산과정은 어떠한 것인지 살펴본다.(중략)

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2004년도 춘계학술대회 논문집
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• pp.397-403
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• 2004

The controller area network(CAN) was originally developed to support cheap and rather simple automative applications, However, because of the its performance and low cost, it is also being considered in automated manufacturing and process control environments to interconnect intelligent devices, such as modem sensors and actuators. This paper presents a new application technology of the developed CAN control modules for the automated doors in building automation system. Key pad and RF methods are used to open and close the automated door by the slave CAN module with CAN protocol. BAS application technology of CAN field bus modules is also presented firstly in our nation.

• 조명전기설비학회논문지
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• 제26권10호
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• pp.60-71
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• 2012

This paper proposes a new design and implementation of multi-protocol IED for networked control system of multi-induction motor in industrial fields. The experimental multi-induction motor based multi-protocol IED of Modbus/LonTalks/TCP/IP module is designed and fabricated. This article addresses issues in architecture of LonWorks/Ethernet sever, embedded processors architecture for converting Modbus protocol to LonTalks protocol, integrating preconfigured software, and Internet technologies. It is also verified that the multi-induction motor control and monitoring system using LonWorks/Ethernet server have available, interoperable, reliable performance characteristics from the experimental results, especially, the seamless integration of TCP/IP networks with control networks allows access to any control point from anywhere. Thus, the results provide available technical data for remote distributed motor control system of industrial field or building microgrid with LonWorks BAS.

• 조명전기설비학회논문지
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• 제26권10호
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• pp.35-43
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• 2012

In this paper, a development of agent-based IEDs(Intelligent electronic devices) for integration control of building microgrid in smart green building are proposed. To manage and control this complex energy system of smart green buildings, multi-agent system based networks is needed. Thus, several IEDs for utilizing multi-agent system are developed and modified for the their verification of performance as agent modules functions in the integrated experimental equipment. The good performance of these IED agents are verified from experimental results obtained from seamless bi-directional communication by SOAP/XML protocol between PC agent and IED agent.