• Title/Summary/Keyword: 언어의 벽

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Active Kernel for Just-in-time Services of Electronic Commerce Systems (전자상거래 시스템의 Just-In-Time 서비스를 위한 능동 커널)

  • Lee, Dong-Woo
    • Proceedings of the Korea Information Processing Society Conference
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    • 2002.11c
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    • pp.2227-2230
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    • 2002
  • 본 논문에서는 WWW을 이용한 전자상거래 환경(B2B, B2C, 등)에서 기업간(시스템 사이) 원활한 업무 협조와 just-in-time 서비스를 구현할 수 있도록, 능동 데이터베이스 기법을 이용한 전자상거래 시스템의 능동 kernel을 제안한다. 능동 커널은 고수준(high level)의 규칙 프로그래밍 언어(ECA rule)를 제공하므로 응용 프로그램과는 독립적으로 기업간 업무협조(coordination)와 사건 기반의 just-in-time 서비스를 구현할 수 있다. 따라서 시스템 관리자 및 프로그래머는 전자상거래 시스템간 조정 기능 구현과 유지보수를 쉽게 할 수 있다. 또한, 본 논문에서 제안하는 능동 커널은 기업의 방화벽(fire-wall)을 통해서도 적용될 수 있도록 HTTP 프로토콜을 이용하므로, platform 독립적인 구현을 통하여 기업간 시스템의 보안 유지와 독립성을 보장할 수 있다.

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Design and Implementation of SOAP-based Marketplace Agent (SOAP을 기반으로 한 마켓플레이스 에이전트 설계와 구현)

  • 최유순;소경영;신현철;한성국;박종구
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.6 no.2
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    • pp.190-199
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    • 2002
  • It is being continued that studies is to supply users with various web service easily and simply. XML, extensible mark up language for web has been developed, and WSDL is provided for web service to UDDI registry in order to more efficient usage. SOAP protocol can be used for firewall endpoint because it uses HTTP as transfer mechanism. In this paper, we are studied dealing with installing agent in marketplace and communicating among service supplier and UDDI. Then agent through SOAP to provide exact and prompt service to demands of users.

A study for Technique of a large log processing on Linux platform (Linux 플랫폼 상에서의 대용량 로그 처리 기법에 대한 연구)

  • Moon, Sae-Kwang;Yun, Han-Kyung
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.1 no.3
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    • pp.61-67
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    • 2008
  • In the course of research, the program that is able to process files through gcc and imput them into the database has been developed, using Syslog-ng based Unix system. PostgreSQL and PHP are used for database and Web-based server side script respectively.

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Case Report: Repair of Complete Bilateral Cleft Palate Using Two-Flap Palatoplasty with Intravelar Veloplasty and Vomer Flap (연구개내근성형술 및 서골피판을 동반한 2개 점막성골막판을 이용한 완전 양측성 구개열 환자의 치험례)

  • Lee, Ui-Lyong;Seo, Byong-Moo;Choung, Pil-Hoon
    • Korean Journal of Cleft Lip And Palate
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    • v.12 no.1
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    • pp.33-40
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    • 2009
  • 구개열이 있으면 언어장애 음식섭취의 어려움, 구개범장근의 기능장애로 인한 이관의 개폐기능부전으로 중이의 액체고임, 부정교합등 여러 문제가 생길 수 있다. 따라서 구개성형술은 갈라진 경구개와 연구개를 막아주며 동적인 연구개를 만들어 주어 충분한 구개인두폐쇄를 하여 정상적 발음을 하는데 그 목표가 있다. 그 외에도 음식물을 정상적으로 섭취할 수 있고 중이염 및 난청을 일으킬 수 있는 기능을 개선시키고 정상적인 교합을 만들어주는데 있다. 위의 목표를 이루기 위해 지금까지 많은 수술 방법이 개발되었고 개선되어 왔다. 하지만 아직도 가장 효과적인 수술방법, 수술시기에 대하여 논쟁거리가 되고있다. 언어를 분명하게 하려면 연구개는 인두벽에 닿기 위해 후상방으로 올라가고 인두의 후벽과 측벽은 올라온 연구개에 닿으려고 수축함으로써 비인두와 구인두 사이의 공간이 좁아지게 됨으로써 가능하다. 따라서 발음이 정확하려면 비인두괄약(nasopharyngeal sphincter)을 합리적으로 만들어주어 비인두와 구인두를 분리해 주어야 한다. 비인두괄약을 조성해 주는 방법에는 구개범거근이 괄약기능을 할수 있도록 연구개내근성형술(intravelar veloplasty)을 시행하여 양편구개범거근을 횡위로 옮겨 연결하여 올림근 걸이(levator muscle sling)을 만드는 방법, 구개 연조직을 후방으로 밀어 구개 길이를 연장하는 방법, 인두 피판술을 하는 방법등이 있다. 구개범거근의 주행방향과 부착이 잘못되어 있는 것으로, 정상에서는 구개범거근이 횡으로 주행하여 연구개의 정중봉선(median raphe)에 부착하는 데 반해 구개열에서는 구개범거근이 전방으로 주행하여 개열 가까이에 있는 구개열 후연과 골선 개열연에 부착되어 있고 구개인두근과 구개수근이 연구개를 그냥 지나쳐직접 구개열 후연에 붙는다. 저자등은 완전 양측성 구개열을 연구개내근성형술 및 서골피판을 동반한 2개 점막성골막판을 이용한 구개성형술로 수술을 시행하여 다소의 지견을 얻었기에 문헌고찰과 함께 보고하는 바이다

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A Study on the Characteristics of Museum Projects by Richard Meier (리챠드 마이어의 미술관 특성에 관한 연구)

  • 김용립
    • Archives of design research
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    • v.12 no.4
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    • pp.231-241
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    • 1999
  • This study propose to analyze the design method and the form elements of museums, of works by Richard Meier, and through the analysis, spacial characteristics of museums will be understood. The museum works of Richard Meier, as an exhibition space, not only display the art works efficiently, but they also offer visitors the opportunity to experience the art of architecture, as a cultural space. Richard Meier, when working on the projects, has utilized the design methods and the architectural language, learned from Mies van der Rohe and Le Corbusier, resourcefully. Having the structural grid as basis, the rational rectangular forms were intended for exhibition space, while the circular and partial circular forms of geometry were utilized in formative space. This was able to maintain the balance between functional and formative space. In the museums of his works, the ramp and the glass wall separated from the structure become very important means of expression. The ramps, not only make people to enjoy the interior and exterior of museum, but also able them to see the works of art from different distances and angles repeatedly and the large glass wall reveals the various shapes of interior to exterior. In comparing with the design method and language of two masters mentioned, the design principles and elements, developed by Meier were applied to the site plans, exhibition space planning and elevations to manifest its originality. The design concept, derived from the urban fabric and historical buildings around, gave harmony to the museum with its surroundings, and employing the deformed axis brought variation and the effect of diversion to the site plan. The exhibition space is much vitalized by the well arrangement of various exhibition fixtures in the museum. The exhibion fixtures, which the partitions, shelves, miches, and stages were put together in flexibility, play multiple roles as partitions dividing spaces, as furniture displaying art works, and as elements creating forms. The systematically arranged fixtures, also produce several visual axes and centers, which have visitors appreciate the works of art in various perspectives, hence create a unique environment.

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Evaluation of the accuracy of three different intraoral scanners for endocrown digital impression: An in vitro study (엔도크라운 디지털 인상을 위한 구강스캐너 3종의 정확도 평가: 실험실 연구)

  • Ural, Cagri;Park, Ji-Man;Kaleli, Necati;Caglayan, Esma
    • The Journal of Korean Academy of Prosthodontics
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    • v.58 no.4
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    • pp.282-289
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    • 2020
  • Purpose: The aim of this in vitro study was to evaluate the accuracy of three different intraoral scanners (IOSs) on digital impressions of different types of endocrown cavity preparations. Materials and methods: Two human mandibular molar teeth were prepared with different endocrown abutment designs: one with a buccal wall (Class 2) and the other without a buccal wall (Class 3). Both cavity designs were scanned using a reference desktop scanner (E3) and three different intraoral scanners: Trios3 (TRI group), Cerec Omnicam (CER group), and i500 (I5 group). The obtained Standard Tessellation Language (.stl) datasets were exported to metrology software. The precision was evaluated based on deviations among repeated scan models recorded by each IOS. The trueness was evaluated based on deviations between the reference data and repeated scans. For detecting interaction, data were statistically analyzed using a univariate analysis of variance (ANOVA) and for analyzing the comparison of the test groups data were analyzed by one-way ANOVA and post-hoc Tukey test at the significance level of .05. Results: The deviation values for both cavity designs in the I5 group were significantly lower than those in the other IOS groups in terms of trueness. For both cavity designs, the TRI group exhibited better precision than the other IOS groups. Conclusion: Different technologies of IOS device's and different endocrown prepration designs affected the accuracy of the digital scans.

The Design And Implementation of Robot Training Kit for Java Programming Learning (Java 프로그래밍 학습을 위한 로봇 트레이닝키트의 설계 및 구현)

  • Baek, Jeong-Hyun
    • Journal of the Korea Society of Computer and Information
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    • v.18 no.10
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    • pp.97-107
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    • 2013
  • The latest programming paradigm has been mostly geared toward object-oriented programming and visual programming based on the object-oriented programming. However, object-oriented programming has a more difficult and complicated concept compared with that of existing structural programming technique; thus it has been very difficult to educate students in the IT-related department. This study designed and implemented a Java robot training kit in which the Java virtual machine is built so that it may enhance the desire and motivation of students for learning the object-oriented programming using the training kit which is possible to attach various input and output devices and to control a robot. The developed Java robot training kit is able to communicate with a computer through the USB interface, and it also enables learners to manufacture a robot for education and to practice applied programming because there is a general purpose input and output port inside the kit, through which diverse input and output devices, DC motor, and servo motor can be operated. Accordingly, facing the IT fusion era, the wall between the academic circles and the major becomes lower and the need for introducing education about creative engineering object-oriented programming language is emerging. At this point, the Java robot training kit developed in this study is expected to make a great commitment in this regard.

A Study on Service Migration in HTML5 based HTTP Streaming Environments (HTML5 기반 HTTP 스트리밍 환경에서의 서비스 이동성 연구)

  • Choi, Hun-Hoi;Kim, Geun-Hyung
    • Journal of Korea Multimedia Society
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    • v.14 no.7
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    • pp.905-916
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    • 2011
  • Recently, the W3C has developed the HTML 5 standard to provide various multimedia services as well as a web based streaming. HTML5 based web browsers with the built-in video codecs can be used directly for streaming services, though previous web browsers should contain playback plug-in for streaming services. In addition, an adaptive streaming technology using HTTP/TCP has been standardized, since an Internet firewall does not support RTP/UDP streaming protocol but HTTP/TCP streaming protocol. In this paper, we propose the service migration mechanism among various devices in the HTML5-based adaptive HTTP streaming environments. The proposed algorithm and architecture were modeled for migrating media flows, media flow control, and session control and implemented using JavaScript. Finally, we showed that the proposed mechanism was effective to migrate HTTP streaming service among various devices by performing several experiments.

Integrated Management Middleware for the Servers supporting the terminal-independent (단말기 독립형 서버 통합 관리 미들웨어)

  • Kim Jeong-Hee;Kwak Ho-Young
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.6
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    • pp.1106-1118
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    • 2006
  • The Internet has become an important instrument for providing many pieces of information to us. And server systems offer the various services after processing a volume of information, it's network topology also has been complex for providing information. Therefore this expansion means the importance of fast and sustained management of server systems. But most of server systems are located in fire-walls to allow only restricted access. Moreover, due to the difference of management based on the different operating system of each server system, management of server system is not to efficiency. That is, sever administrators have to manage by themselves many kinds of servers by using local-based or socket-based single access applications. Therefore, we design and implement a middleware system which allows to manage many kinds of severs integrally ruling XML-based Web Services which have distributed object technology such as CORBA, Java RMI and DCOM, but are free from platforms or development languages. System also provides location transparency and terminal independence and calls a server system management command to manage systems.

Policy-based In-Network Security Management using P4 Network DataPlane Programmability (P4 프로그래머블 네트워크를 통한 정책 기반 인-네트워크 보안 관리 방법)

  • Cho, Buseung
    • Convergence Security Journal
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    • v.20 no.5
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    • pp.3-10
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    • 2020
  • Recently, the Internet and networks are regarded as essential infrastructures that constitute society, and security threats have been constantly increased. However, the network switch that actually transmits packets in the network can cope with security threats only through firewall or network access control based on fixed rules, so the effective defense for the security threats is extremely limited in the network itself and not actively responding as well. In this paper, we propose an in-network security framework using the high-level data plane programming language, P4 (Programming Protocol-independent Packet Processor), to deal with DDoS attacks and IP spoofing attacks at the network level by monitoring all flows in the network in real time and processing specific security attack packets at the P4 switch. In addition, by allowing the P4 switch to apply the network user's or administrator's policy through the SDN (Software-Defined Network) controller, various security requirements in the network application environment can be reflected.