• 한국항공운항학회지
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• 제22권1호
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• pp.7-14
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• 2014

This paper deals with recent research cases and directions of Fly-By-Wireless (FBWLS) flight control technology. FBWLS is a new type of flight control system technology with the aim of solving the problems mainly caused by the increasing amount of wires in aircraft to which Fly-By-Wire (FBW) technology applies. Therefore, in FBWLS flight control system the wired communication system is replaced with a wireless communication system. Currently the FBWLS flight control technology is at an initial development stage and thus this paper surveys deals with the cases in the viewpoint of technology feasibility. In this context, this paper analyzes technology that needs further studies to secure the reliability, stability and accuracy to the similar level of the corresponding FBW system. Since the major problems of FBWLS technology are packet losses and time delays so that this paper suggests the research direction of wireless communication protocol selection, optimization of wireless communication network and controller design considered communication environment.

• 한국관광식음료학회지:관광식음료경영연구
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• 제10권
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• pp.159-186
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• 1999

This study attempted to present the ways of improving relationship marketing activities of tourist hotels. The field survey was carried out at six deluxe hotels in Seoul to find out their relationship marketing activities and analyze the problems of the activities. The problems were analyzed as follow; 1) lack of adequate understanding of the importance of relationship marketing, 2) poor contents of customer file information, 3) insufficient service encounter management, 4) negative inducement of guests' complaints, 5) insufficient survey of guests' satisfaction, 6) insufficient relationship maintenance programs and regaining program of lost guests. This study relationship marketing activities should be improved with customer information file establishment, service encounter mangement, and communication enforcement as follow; 1. Customer Information File Establishment As relationship marketing Is marketing for individual, it needs customer file information. The guest information files should be made in detail in all the market segments. Hotels have to make use of the information strategically for establishing relationship with their guests. 2. Service Encounter Mnagement Because the guest-oriented mind and professionalism of hotel staff are prerequisite for relationship continuity, hotel should make efforts to make its staff keep the mind and cultivate expert service technique of the staff. 3. Communication Enforcement Communication enforcement consists of communication activities and communication programs which are focused on contact intensity and two-way communication.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권8호
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• pp.2627-2647
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• 2022

The easy scalability and low cost of range-free localization algorithms have led to their wide attention and application in node localization of wireless sensor networks. However, the existing range-free localization algorithms still have problems, such as large cumulative errors and poor localization performance. To solve these problems, an incremental strategy-based residual regression network is proposed for node localization in wireless sensor networks. The algorithm predicts the coordinates of the nodes to be solved by building a deep learning model and fine-tunes the prediction results by regression based on the intersection of the communication range between the predicted and real coordinates and the loss function, which improves the localization performance of the algorithm. Moreover, a correction scheme is proposed to correct the augmented data in the incremental strategy, which reduces the cumulative error generated during the algorithm localization. The analysis through simulation experiments demonstrates that our proposed algorithm has strong robustness and has obvious advantages in localization performance compared with other algorithms.

• 가정과삶의질연구
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• 제28권6호
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• pp.95-111
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• 2010

The purposes of this study were to show general trends in the aspects of psychological family environment (parental communication), peer factor, academic performance factor, depression perceived by adolescents and to examine possible changes in such trends in accordance with demographic variables and the family structure environment (parental marital status, family economic status, and parents' education level), and then to determine the effect of these variables on adolescents' depression. The subjects were 1009 middle and high school students in Seoul and Gyeonggi province. The main results were as follows: 1) Paternal communication was significantly lower in technical high school students, divorced/ separated parents, and families of lower economic status. Maternal communication was significantly lower in male students, divorced/sepa-rated parents, and families of lower economic status. Academic performance problems was significantly higher in males, technical high school students, divorced/ separated parents, families of lower economic status, and a less educated father. Peer relations was significantly lower in students of divorced / separated parents, and of families of lower economic status. Depression was significantly higher in technical high school students, divorced / separated parents, and families of lower economic status. 2) In the case of male students, paternal communication had both a direct and an indirect negative effect through peer relations on depression, while academic performance problems had both a direct and an indirect positive effect through peer relations on depression. Both peer relations and maternal communication had a positive and a negative direct effect on depression. School grade had both a direct and an indirect negative effect through paternal communication on depression. Parental marital status(divorced or separated) had both a direct and an indirect positive effect through academic performance problems on depression. Family economic status had only an indirect effect on discussed.

• 한국컴퓨터정보학회논문지
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• 제14권7호
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• pp.133-141
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• 2009

대규모 소프트웨어 개발 프로젝트의 성공적인 수행을 위해서는 프로젝트 이해당사자 간의 의사소통 문제를 개선하는 것이 무엇보다 중요하다. 본 연구에서는 이와 같은 표로젝트 이해당사자 간의 의사소통을 개선하기 위한 통합관리도구를 설계하고 구현하였다. 이를 위하여 S사에서 수행한 정보전략계획 자료와 최근 6년간 수행한 23개 프로젝트의 문제점을 의사소통의 관점에서 요구사항을 수집 정리하고, 이를 기반으로 의사소통 개선을 위한 통합관리도구를 설계하고 제안한다. 제안된 설계의 기본 모형 중 의사소통에 관련된 부문들의 주요 기능과 구조를 정의하고, 주요기능을 구현하기 위한 프로세스와 상세 기능을 제시하였다. 제안한 설계의 유효성을 입증하기 위한 정성적인 평가와 의사소통 관점에서의 정량적 분석을 통해 그 가능성을 나타내었다.

• 한국컴퓨터산업학회논문지
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• 제2권4호
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• pp.443-454
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• 2001

기존의 비즈니스 컴포넌트들간의 의사소통은 Facade 패턴을 따르는 방식이었다. 그러나 Facade 패턴은 대표객체 하나만으로 소속객체 밖의 모든 객체들과의 의사소통을 전달하는 방식으로서 기존의 Interface 패턴과 거의 비슷하며, 반드시 대표객체를 통해서만 의사소통이 가능하므로 여러 객체들의 동시 접근 시 과부하로 인하여 결과 반환에 속도저하의 단점을 가지고 있다. 따라서 본 논문에서 제안한 intermediator 패턴은 이러한 과부하 현상으로 인한 저효율성의 컴포넌트 의사소통 방식을 개선하여 여러 인터페이스를 통한 속도저하의 단점을 보완하였고, Intermediator 객체내의 메소드 구체화를 통하여 실제 행위만을 관리하는 Intermediator 객체를 두어 모든 행위는 Intermediator에서 이루어지도록 하였다. 그렇기 때문에 본 논문에서 제안한 Intermediator 패턴은 객체간의 결합도를 줄일 수 있고 또한 응집력은 높일 수 있으며, 다른 여러 객체들의 참조에도 여러 인터페이스를 통하여 유연하게 대처할 수 있다는 장점이 있다.

• 한국도서관정보학회지
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• 제8권
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• pp.155-184
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• 1981

The publication of the result of scholarly research is an integral part of the process by which learning is advanced. The university presses, as one of the major scholarly publishers are now confronted with many critical problems, such as the declining unit sales, the explosion of manuscripts, the challenge of new publishing technologies, etc., in performing the role of the scholarly communication system. The purpose of this study is to identify the problems imposed on the university presses and alternative strategies for them. For the study, the related literature to the subject were read, analyzed and synthesized, from which the overall prospect of the problems and alternative strategies are derived. The conclusion of the study can be summarized as follows: (1) The faith of the university should lie in its role to advance scholarly learning through production and dissemination of high-quality knowledge, and the university press should materialize such a faith. (2) The scholarly books, though not the best media of scholarly communication taking a side view of its timeliness and brevity, can perform the function of the best media for the specific subject and readers. (3) The scholarly books as national resource must be published for the scholars demanding them even though the publication can't help depending on the subsidiary fund. (4) For the survival and activation of the university presses, the following strategies should be examined, and put in force if necessary. (a) The role of the foundation su n.0, pporting the university presses should be expanded (b) The Co-operative system among the operations of the presses should be established. (c) It is desirable that the university without the press should participate in the university with the press for both the financial su n.0, pporting and the publicizing its faculty's manuscripts. (d) The positive efforts should be made for the increase of sales copies by implementing the dual-system of publication. (e) It is desirable that 'recording system' should be incorporated in the traditional publication system both for the lightening of financial problems and the explosion of publications. (f) It is necessary that the effective methods of the bibliographical control should be developed for the improvement of the scholarly communication. (g) Any kind of the permanent organization composed of the representatives from all the infrastructures of information industry should be established to study the character and direction of technological changes and to discern the better choice of specific, technologies in the scholarly communication system.

• 한국산학기술학회논문지
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• 제17권2호
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• pp.719-723
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• 2016

최근 무선 통신 기술에 대한 관심 증가와 빠른 기술 발전으로 인해 이를 이용한 다양한 응용 기술이 출시되고 있다. 학교에서도 무선 통신 기술을 이용한 출결 관리 시스템을 이용함으로써 출석부에 의한 출결 관리의 문제점을 해결하는 시도가 이루어지고 있다. 그 대표적인 시스템이 RFID, Bluetooth, 클리커 등을 이용한 출결 관리 시스템이다. 그러나 이들 시스템은 출석 호명과 수기에 따른 종이와 시간 낭비를 해결하기는 하였으나 부가적인 장비를 구매 또는 대여함으로써 비용 추가를 발생시키는 문제점을 가지고 있다. 이 모든 문제점을 해결하기 위해서 본 논문에서는 대부분의 스마트폰에서 지원되고 있는 NFC(Near Field Communication)를 이용한 자동 출결 관리 시스템의 프로토타입을 제안한다. NFC를 이용한 자동 출결 관리 시스템은 교수용과 학생용 두 개의 앱으로 구성되며, NFC와 TCP/IP 기술을 이용하여 출결 정보를 자동 관리하게 함으로써 대리출석 및 수업시간 손실, 부가적인 비용 발생 등의 문제점을 해결하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2016년도 추계학술대회
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• pp.579-582
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• 2016

최근 통신 기술의 눈부신 발전과 함께 무선 통신 시스템은 넓고 다양한 영역에서 활용되고 있다. 수중 무선 통신에서 음향 통신 시스템은 기존의 RF에 비해 전송 성능이 우수하여 수중 통신에 다양하게 활용되고 있다. 그러나 음향 통신 시스템은 저속통신, 전송지연 및 제한된 대역폭과 같은 문제점이 있으며, 이러한 음향 통신 시스템의 문제점을 개선하기 위해 수중 가시광 통신에 대한 연구가 활발히 진행되고 있다. 따라서 본 논문에서는 효과적인 수중 가시광 통신을 위해 ASK변조를 이용한 수중 가시광 통신을 제안하였다.

• 한국직업건강간호학회지
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• 제18권1호
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• pp.116-127
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• 2009

Purpose: This study was intended to understand relevant factors by observing phenomena and characteristics of family nursing based on ICNP. Methods: The subjects of this study were nurses and 80 reports were prepared by 680 students for the data. Results: The results are as follows: The average number of the family problems the subjects were faced with was 3.5, while the majority (70%) had 3 problems. The most frequently occurred family problem was 'lack of or improper communication,' followed by 'inappropriate family coping,' 'unhealthy life style,' 'inadequate care management of sick members,' and 'wrong parental role.' Married women showed high APGAR score in the family function. The problems they were experiencing were 'lack of or improper communication,' 'inadequate care management of sick members,' and 'wrong parental role.' Conclusion: As a conclusion, the following is advised. First, intervention strategies are required for the women workers at medical institutions as their family problems revealed to have occurred frequently. Second, in order to alleviate family problems of married working women with various tasks and roles they play, necessary measures and concern in the aspect of industrial nursing are needed.