• The KIPS Transactions:PartB
• /
• v.11B no.5
• /
• pp.603-610
• /
• 2004

The distributed Information Retrieval System centrally controlled by mediator or meta search engine result in congestion of heavy traffic and int he problem of increment of cost for the reason of the design of complicated algorithm for central control and installation of hardware. So to figure out this problem, the way is needed that has independent retrieval functionality and can cooperate each other without dependency. In this paper, we overview a few works involved in distributed information retrieval system, then, implement algorithm and design the frame-work of distributed information retrieval system using sequential transferring method(STM) including multiple information retrieval system separated from central control. For this first of all, we present a web partition policy which devide and manage web logically and we present the sequential query processing way by means of illustration through changing numbered information retrieval system. Then, we also present 3-layered structure of framework and function and module of each layer suitable for information retrieval system. Last of ail, for effective implementation of STM algorithm we analysis module structure and present description of pseudocode of this, and show that the proposed STM algorithm works smoothly by demonstration of sequential query transfer process between servers.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2022.11a
• /
• pp.34-35
• /
• 2022

항로표지인 등부표는 항해자에게 해역환경 및 위험요소에 관한 정보전달을 위해 형상 및 광원의 섬광을 이용하고 있으며, 이때 광원의 섬광은 다양한 주기를 가지고 동작한다. 최근 주요항만에는 다양한 항만시설이 배치됨에 따라 배후광이 증가하고 있으며, 또한 복잡한 해안을 따라 다수의 항로표지들이 배치되어 있어, 등부표의 정보 전달 시인성을 높이기 위해 다양한 점멸 방식이 운용중이다. 대표적으로 동기점멸과 순차점멸 방식이 있으며, 이에 관련하여 국내외 항만 및 타분야 관련 규격 및 적용사례 등에 대해 조사 분석하였다.

• Journal of the Institute of Electronics and Information Engineers
• /
• v.53 no.11
• /
• pp.130-138
• /
• 2016

In this paper present the real-time system parallel testing techniques for weapon systems error verification. Previously field testing equipment in the military field was using the sequential testing method to maintain. This method could not check the error verification of interference. For this reason, in this paper propose the real-time system parallel testing techniques using an embedded module instead of the sequential testing techniques which is used in the weapon system error verification. Using the embedded module mounted switching control card conduct the parallel testing and then send the result to the PC. This method is possible to increase the reliability in the weapon system error verification.

• The Transactions of the Korea Information Processing Society
• /
• v.7 no.9
• /
• pp.2948-2957
• /
• 2000

A broadband access network in B- ISDN subscriber network, plays a role of concentration or multiplexing of various subscribers into a service node. To establish an end-to-end ATM connection, interworking functions between \'B5.2 interface's connection protocol and the signalling protocol, are perfonned at the service node. A sequential interworking model and a parallel interworking model were proposed for these interworking functions. The sequential interworking model proceeds the signalling protocol of network node after the response of VB5.2 interface protocol. On the other hand, the parallel interworking model proceeds the signalling protocol and the VB5.2 interface protocol simultaneously. In this paper, we analyze and simulate above two interworking models in tenns of a connection setup delay and completion ratio, when call requests with eBR and VBR transfer capability arrive at the service node. We observed that the completion ratios of the two interworking models are quite closed. However the connection setup delay of parallel interworking model is improved by about 33% compared with that of the sequential interworking model.

• Proceedings of the Korean Information Science Society Conference
• /
• 2005.07a
• /
• pp.322-324
• /
• 2005

정보는 정보 요청자와 제공자의 상호작용에 의해 교환되며 이러한 상호 작용은 순차적으로 이루어지게 된다. 정보 요청자는 하나의 정보를 요청한 후 그 결과를 확인하고 다시 새로운 정보를 요구하는 행위를 반복하게 되며 이러한 일련의 과정은 원하는 결과를 얻을 때까지 지속된다. 따라서 하나의 정보를 요청한 후 그 결과가 나타날 때까지의 시간은 사용자의 관여도가 매우 높은 상태로 지속될 수 밖에 없으며, 이러한 순차적인 정보 전달의 틈새를 이용하여 광고 화면을 표출 시킴으로써 높은 인지도를 얻고자 실시되는 광고가 틈입(闖入)형 광고이다. 본 논문에서는 웹 브라우저와 웹 서버 사이의 세션 정보를 가로채어 강제로 광고를 출력하는 새로운 방식의 네트워크 기반의 틈입(闖入)형 광고 에이전트 시스템을 제안한다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.22 no.2
• /
• pp.125-130
• /
• 2011

In this paper, SIW-based $2{\times}4$ uniform array antenna with a sequentially fed 8-way power divider with an equal division characteristic is proposed for an application of X-band satellite communication. In particular, sequential feeding structures with a progressive phase difference of 90 degrees between the nearest elements have been suggested to protect the cancellation of electric fields due to the array alignments and to enhance the purity of RHCP(Right-Handed Circular Polarization). The obtained results according to the return loss bandwidth, RHCP antenna gain, axial ratio bandwidth are 760 MHz ranging from 7.90 to 8.66 GHz under the criterion of less than -10 dB, 14.3 dBic at 8.3 GHz, and 600 MHz from 8.15 to 8.75 GHz, respectively. In addition, it is observed that the equal-division characteristic of SIW-based 8-way power divider is approximately -9.2 dB in all ports.

• Proceedings of the Korean Information Science Society Conference
• /
• 2006.06d
• /
• pp.154-156
• /
• 2006

본 논문은 기존의 혼잡 제어 기술이 전체 노드들을 위해 설계 되어 싱크 주변에서 생성되는 특별한 혼잡을 해결 할 수가 없기 때문에 싱크 주변 노드를 위한 혼잡 제어 기술을 제안한다. 싱크 주변에서 일어나는 'Bottle Neck' 문제가 일어났을 경우 데이터의 분석에 의한 우선순위결정과 타임 스케줄을 이용한 순차적인 데이터 전송으로 혼잡을 줄이고 그로 인해 데이터의 의미 있는 전송과 신뢰성을 동시에 만족시킨다. 또한 이 기술은 멀티 싱크 또는 모바일 싱크에도 적용 시킬 수 있고, 기존의 전체 노드를 위한 혼잡 제어 기술과 제시하는 기술을 혼용하여 사용할 수도 있다. 본 논문이 제안하는 기법은 혼잡 제어를 하지 않은 상태에서의 데이터 전달 방식에 비해 데드라인 만료 비율이 1.5%이상 감소하였고 프레임 손실율 또한 28%이상 감소하였다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2003.05b
• /
• pp.1047-1050
• /
• 2003

최근 HAVi의 기반이 되는 IEEE1394는 기존의 멀티미디어 데이터를 지원하는 장비의 인터페이스 이외에도 실시간성이 요구되는 백색가전 제어 시스템에 적용이 되고 있으며 그 응용분야가 점차 확대되고 있다. HAVi는 순차적인 방식으로 메시지를 전달하므로 시급한 이벤트가 발생된 경우 기존의 많은 메시지로 인해 그 처리가 지연되어 문제가 발생될 수 있다. 따라서 본 논문에서는 우선순위 기반의 메시지 전송 기능을 추가한 HAVi 시스템의 설계 및 구현에 대해 기술한다.

• Journal of Broadcast Engineering
• /
• v.6 no.3
• /
• pp.246-259
• /
• 2001

Due to recent rapid deployment of Internet streaming service and digital broadcasting service, the issue of how to efficiently support streaming workload in so called "Internet Home Appliance" receives prime interests from industry as well as academia. The underlying dilemma is that it may not be feasible to put cutting edge CPU, boards, disks and other peripherals into that type of device. The primary reason is its cost. Usually, Internet Home Appliances has its dedicated usage, e.g. Internet Radio, and thus it does not require high-end CPU nor high-end Va subsystem. The same reasoning applies to I/O subsystem. In Internet Home Appliances dedicated to handle compressed moving picture, it is not equipped with high end SCSI disk with fast rotational speed. Thus, it is mandatory to devise elaborate software algorithm to exploit the available hardware resources and maximize the efficiency of the system. This paper presents our experiences in the design and implementation of a new multimedia file system which can efficiently deliver the required disk bandwidth for a periodic I/O workload. We have implemented the file system on the Linux operating system, and examined itsperformance under streaming I/O workload. The results of the study show that the proposed file system exhibits superior performance than the Linux Ext2 file system under streaming I/O workload. The result of this work not only contribute to advance the state f art file system technology for multimedia streaming but also put forth the software which is readily available and can be deployed. deployed.

• The Journal of the Korea Contents Association
• /
• v.20 no.1
• /
• pp.16-24
• /
• 2020

The study empirically explored factors influencing How storytelling factors in social networking services, SNS, affect consumer response on the uses and gratification theory. conducted an analysis of 120 university students attending universities in the Seoul metropolitan area using an experiment. The results of this study are as follows: first, The storytelling factors, relevance and veracity have a positive effect on clarity. second, it has been shown that only veracity has a positive effect on parai-social interaction with media figures with emotional attachment. third, para-social interactions have been shown to influence content attitudes and orality sequentially. This study deals with the effect of SNS storytelling on the consumer's part, providing practical implications for enhancing content attitudes and word-of-mouth, by increasing para-social interactions with consumers while identifying the components that should enhance the way SNS is delivered in terms of storytelling.