• 한국IT서비스학회지
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• 제8권2호
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• pp.157-171
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• 2009

In mobile XML environments, the efficient synchronization technique is required to maintain the consistency of replicated XML data because the same data can be replicated between so many different XML documents. In this paper, we propose a message digest based synchronization technique to maintain the consistency of replicated data between client XML documents and a server XML database in mobile XML environments. The proposed an XML data synchronization technique(XSA) has the advantage of model generality aspect and storage space aspect by using the tuple-based message digest table to detect the data conflicts. The proposed technique can be applicable to the application requiring the consistency of replicated XML data without any restrictions in the heterogeneous(between hierarchical XML documents and relational XML databases) mobile environments.

• 인터넷정보학회논문지
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• 제7권5호
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• pp.1-12
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• 2006

모바일 데이터베이스 환경에서는 서로 다른 데이터베이스 안에 동일한 데이터가 중복되는 상황이 발생하므로, 이러한 중복된 데이터의 일관성을 유지시켜 주기 위한 효율적인 동기화 기법이 요구된다. 본 논문에서는 모바일 환경하에서 클라이언트 데이터베이스와 서버 데이터베이스간의 중복된 데이터의 일관성을 유지시키기 위한 메시지 다이제스트 기반의 동기화 기법을 제안하였다. 제안한 데이터 동기화 기법은 내부적으로 튜플 단위의 메시지 다이제스트 결과를 충돌을 탐지하기 위한 정보로 사용함으로써 기존 동기화 방법에 비하여 범용성 및 확장성 측면에서 이점이 있다.

• 유통과학연구
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• 제15권10호
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• pp.5-14
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• 2017

Purpose - This research aims to find the moderation roles of power states in the effects of four message types (competence self-referencing, competence self-defining, warmth self-referencing, warmth self-defining) on brand attitude. Research design, data, and methodology - A restaurant brand was used as an experimental object, and 4(message types: warmth self-defining message, warmth self-referencing message, competence self-defining message, competence self-referencing message) × 2(power: high power and low power) between-subjects design was employed. Through on-line survey in Nepal, we collected a total of 240 individuals composed of eight experimental groups with 30 members in Nepal. Results - Consumers under low power state formed more positive brand attitude at the warmth self-defining message than any other types of message, while under high power condition, there are neither the attitude differences between competence self-referencing message and competence self-defining message, nor those between competence self-referencing message and warm self-defining message. The significant attitude differences showed between competence self-referencing message and warmth self-referencing message. Conclusions - This study contributes to the advertising theory development. Restaurant store marketers should deliver warmth self-defining message rather than the other three types of message to consumers under low power state, and they should not deliver warmth self-referencing message to consumers under high power state.

• 제어로봇시스템학회논문지
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• 제22권7호
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• pp.570-577
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• 2016

This paper proposes the design of a novel distributed message management scheme using a message-oriented management and analysis tool (MOMAT) for naval combat system (NCS) middle-ware. If a message is not guaranteed real-time of the NCS with each node, it causes the loss of data and decreases the reliability of systems. To solve these problems, improved message management schemes are proposed. Message management schemes are considering a real-time user management scheme and a real-time traffic management scheme. The proposed schemes are simulated with a developed simulation tool, data publisher, and subscriber connected through nodes in middle-ware. The simulation results show improved results in terms of message round-trip time (RTT), End-to-End delay, and throughput.

• 한국전자거래학회지
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• 제5권2호
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• pp.101-112
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• 2000

Costs and times, resources was better decreased than former times because it had been introduced EDI(Electronic Data Interchange) system. Nevertheless, many problems has been raised as before, that is high costs and data re-using, the rapidly changing environment, etc. To solve these problems, it was attempted to introduce XML technology at traditional EDI System. From this point to view, 1 designed and implemented XML/EDI System based on Internet(Internet Messaging System) in this paper. And I selected some services as basic service among many services which is provided at XML/EDI System, that is message sending and message receiving, message retrieval. Other service of client system was composed of MapIn and MapOut module. MapIn Module is to parse the received XML Message and to store XML Data to RDB system. And MapOut module is to generate XML Message after extracting data from RDB system and to transfer XML Message to recipient. Hereby, XML/EDI System(XEDI System) provide document re-using, the various result(output) generation f3r various requirement and directly interface with DB. Therefore, This System(XEDI System) is more various and more flexible than the existing Messaging System that just provide transfer and retrieval service

• 복식
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• 제67권1호
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• pp.22-39
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• 2017

This study intended to empirically verify the effect of message framing, cognitive need for closure, and type of fashion products on purchasing attitude of PB fashion products in discount stores. The design consisted of three-mixed design of 2(POP(Point of Purchase)message framing: benefit message vs. loss message) ${\times}2$(cognitive need for closure: high vs. low) ${\times}2$(PB fashion product type: utilitarian vs. hedonic). Survey of this study was conducted on 330 men and women in 20~50's in Seoul and Gyeong-gi, and a total of 287 data were analyzed. Data were analyzed with SPSS 18.0 program, and three-way ANOVA, simple interaction effects and simple main effects analysis were conducted. The results of this study are as follows: First, it was identified that the framing type of POP message of discount store, cognitive need for closure, and PB fashion product type had significant effect on preference and purchase intention. Secondly, it was identified that consumers with both high and low cognitive need for closure had high preference level and purchase intention when they encountered the benefit message framing than the loss message framing. Thirdly, the benefit message framing was more effective than the loss message framing for hedonic PB fashion products in discount stores, but utilitarian PB fashion products did not get affected by the message framing. Fourthly, it was identified that groups with both high and low cognitive need for closure preferred hedonic PB fashion products. Lastly, it was verified that benefit message framing POP advertisement on a group with high cognitive need for closure was effective for Hedonic PB fashion products in discount stores, and utilitarian PB fashion products showed no difference in purchase intention according to the POP message framing type and cognitive need for closure.

• 한국통신학회논문지
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• 제35권1B호
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• pp.53-61
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• 2010

사물통신은 다양한 네트워크와 기기가 결합하여 복합적인 서비스를 제공하는 미래의 통신망 기술로 복합적인 서비스를 제공하기 위하여 센서 시스템들 사이에 표준화된 정보 교환 기술이 필요하다. 본 연구에서는 센서 시스템이 가지는 특징을 반영하여 응용 시스템 사이에 데이터 추상화와 상호운용성을 지원하는 메시지 프로토콜을 개발하였으며, 이는 데이터 표현 형식과 데이터 교환 함수로 구성된다.

• 한국위성정보통신학회논문지
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• 제12권2호
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• pp.21-27
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• 2017

국내 개발 함정 전투체계는 Link-11, 위성ISDL, JTDLS(합동전술데이터링크) 등 다종의 전술데이터링크를 운용하고 있으며, 각 전술데이터링크는 고유의 메시지를 이용하여 전술데이터링크로 표적, 교전 및 무장정보 등과 같은 전술정보를 전달할 수 있다. 함정에서 운용되는 다종의 전술데이터링크는 복수의 전술상황도(CTP), 주요기능 중복으로 업무효율성을 저하시키는 단점이 상존해 있으며, 선진국에서는 이를 극복하기 위해 전술데이터링크를 통합형 구조로 변경하는 추세에 있다. 현재 함정 전투체계에서는 위성ISDL, KNCCS, JTDLS 체계가 해군전술C4I 성능개량체계로 통합되어 운용될 예정이다. 본 논문에서는 국내 개발 함정 전투체계 전술데이터링크 개발현황을 고찰하고, 해군전술C4I 성능개량체계의 Host Interface 메시지와 위성ISDL의 I 메시지를 비교분석하여 해군전술C4I 성능개량체계의 발전사항에 대하여 제시하고자 한다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 춘계종합학술대회
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• pp.843-847
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• 2005

The development of distributed application in the standardized CORBA(Common Object Request Broker Architecture) environments reduces the developing time and maintaining cost of the systems. Because of these advantages, the development of application is being progressed in the several fields using the CORBA environments. The programmers in the CORBA environments usually develop the application programs using the CORBA IDL(Interface Definition Language). The IDL files are compiled by IDL compiler and translated into the stubs and skeleton codes which are mapped onto particular target language. The stubs produced by IDL compilers processes the marshaling a data into message buffer. Before a stub can marshal a data into its message buffer, the stub must ensure that the buffer has at least enough free space to contain the encoded representation of the data. But, the stubs produced by typical IDL compilers check the amount of free buffer space before every atomic data is marshaled, and if necessary, expand the message buffer. These repeated tests are wasteful and incidence of overheads, especially if the marshal buffer space must be continually expanded. Thus, the performance of the application program may be poor. In this paper, we suggest the way that the stub code is maintain the enough free space before marshaling the data into message buffer. This methods were analyzes the overall storage requirements of every message that will be exchanged between client and server. For these analysis, in the Front End of compiler has maintain the information that the storage requirements and alignment constraints for data types. Thus, stub code is optimized and the performance of application program is increased.

• International Journal of Computer Science & Network Security
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• 제22권4호
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• pp.285-291
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• 2022

With the growing exchange of data between individuals and institutions through various electronic communication, valuable data protection is in high demand to ensure that it is not hacked and that privacy is protected. Many security techniques, such as encryption and steganography, have emerged to prevent security breaches. The purpose of this research is to integrate cryptographic and steganography techniques to secure text message sending. The Rijndael algorithm was used to encrypt the text message, and the Least Significant Bit algorithm was also used to hide the encrypted message in a color image. Experiments on the suggested method have proven that it can improve the security of sent messages due to the human eye's inability to identify the original image from the image after it has been covered, as well as the encryption of the message using a password.