• 항공우주정책ㆍ법학회지
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• 제22권1호
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• pp.163-186
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• 2007

Charter flight in international air law has, from very beginning, not precisely defined by the International Civil Aviation Organization (lCAO) since 1947 when it came into being. By practice, the operation of charter traffic is, in its very beginning, the subject to the regulations of national rules and bilateral charter agreements (charter annex clause) within the framework of normal bilateral agreement of international air services. Taiwan had signed a series of bilateral air service agreement under the name of the Government of the Republic of China when Taiwan was recognized by the United Nations and major members of international community as the sole legal government representing China before 1971, but that situation was changed since then. Taiwan has only maintained diplomatic relations with 25 States, but maintained semi-official relations with major powers of the world. The former agreements were signed within the framework of the Vienna Convention on the Law of Treaties of 1969 while the latter agreements were signed within the framework of administrative and civil law of two countries which were not in the form of bilateral treaty signed by two sovereign States in its proper sense of international law. The legal regime of charter flights between Taiwan and Mainland China is regulated by special arrangements negotiated by delegated airlines and airlines association or private law institutions.

• 한국전자통신학회논문지
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• 제9권11호
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• pp.1255-1266
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• 2014

본 논문에서는 오픈 모바일 플랫폼인 안드로이드를 리눅스 커널을 기반으로 하는 ARM Cortex-A8 Core를 사용한 SAMSUNG의 S5PV210 CPU를 장착한 MPU 모듈, Base 보드 모듈 및 센서 모듈을 제작하여 실시간 프레임워크를 설계함으로서 효율적인 산업용 제어를 가능하게 하였다. 센서 모듈에서 획득한 온도 및 습도 데이터는 하이브리드 어플리케이션을 개발함으로서 Web Server를 통하여 데이터베이스에 저장된 후 클라이언트 User가 온도 및 습도 데이터를 스마트 폰에서 확인 함으로서 실시간 프레임워크 설계의 적합성 및 타당성을 검증한다.

• 한국멀티미디어학회논문지
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• 제20권5호
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• pp.808-826
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• 2017

Most of conventional DSS's(Digital Signage Systems) have been built based on LAMP framework. Recent researches have shown that MEAN or MERN stack framework is simpler, more flexible, faster and more suitable for web-based application than LAMP stack framework. In this paper, we propose a design and implementation of MEARN (ME(A+R)N) stack-based real-time digital signage system, MR-DSS, which supports handing real-time tasks like urgent/instant messaging, system status monitoring and so on, efficiently in addition to conventional digital signage CMS service tasks. MR-DSCMS, CMS of MR-DSS, is designed to provide most of its normal services by REST APIs and real-time services like urgent/instant messaging by Socket.IO base under MEARN stack environment. In addition to architecture description of components composing MR-DSS, design and implementation issues are clarified in more detail. Through experimental testing, it is shown that 1) MR-DSS works functionally well, 2) the networking load performance of MR-DSCMS's REST APIs is better compared to a well-known open source Xibo CMS, and 3) real-time messaging via Socket.IO works much faster than REST APIs.

• 스마트미디어저널
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• 제8권2호
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• pp.94-98
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• 2019

본 논문에서는 관리자가 자신이 소유하고 있는 IoT 시스템을 관리할 수 있도록 하는 도구를 개발한다. 장비 에이전트는 오픈소스 블록체인 프레임워크 기반으로 구성해 데이터의 불변성을 보장하고, 장비에 연결된 AP에 대한 추적성을 확보하여 자산에 대한 위치를 파악할 수 있다. 관리자는 블록체인 장부에서 장비의 연결 내역을 추적할 수 있다. 추가로 네트워크 형성 과정 중 발생하는 ARP 프로토콜의 ARP 추가 요청에 대한 신뢰를 없애 ARP poisoning 공격을 방지할 수 있는 가능성에 대해 연구한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권5호
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• pp.1446-1465
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• 2022

Diversified SaaS applications allow users more choices to use, according to their own preferences. However, the diversification of SaaS applications also makes it impossible for users to choose the best one. Furthermore, users can't take advantage of the functionality between SaaS applications. In this paper, we propose a platform that provides an SaaS mashup service, by extracting interoperable service functions from SaaS-based applications that independent vendors deploy and supporting a customized service recommendation function through log data binding in the cloud environment. The proposed SaaS mashup service platform consists of a SaaS aggregation framework and a log data binding framework. Each framework was concreted by using Apache Kafka and rule matrix-based recommendation techniques. We present the theoretical basis of implementing the high-performance message-processing function using Kafka. The SaaS mashup service platform, which provides a new type of mashup service by linking SaaS functions based on the above technology described, allows users to combine the required service functions freely and access the results of a rich service-utilization experience, using the SaaS mashup function. The platform developed through SaaS mashup service technology research will enable various flexible SaaS services, expected to contribute to the development of the smart-contents industry and the open market.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
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• pp.295-297
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• 2008

Session Initiation Protocol (SIP) has become the call control protocol of choice for Voice over IP (VoIP) networks because of its open and extensible nature. However, the integrity of call signaling between sites is of utmost importance, and SIP is vulnerable to attackers when left unprotected. Currently a hop-by-hop security model is prevalent, wherein intermediaries forward a request towards the destination user agent server (UAS) without a user agent client (UAC) knowing whether or not the intermediary behaved in a trusted manner. This paper presents an integrated security model for SIP-based VoIP network by combining hop-by-hop security and end-to-end security.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 1998년도 가을 학술발표논문집 Vol.25 No.2 (3)
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• pp.665-667
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• 1998

방대한 양의 분산 멀티미디어 자원에 대한 엑세스를 제공하는 하이퍼미디어 기능을 사용한 WWW의 성공은 정보관리 시스템의 구성요소로써 하이퍼미디어 항해자의 실행 가능성에 대한 확고한 증거를 제공한다. 그러나 논 논문에서는 현존하는 하이퍼미디어 시스템에 거의 없는 필요한 모든 기능을 제공하는 방법을 보였다. 개방형 분산 멀티미디어 자원 통합 모델의모든 기능을 제공해 주기 위하여 개방형 분산 하이퍼미디어 계층의 프리젠테이션 계층과 양질의 서비스 계층을 통하여 융통성 있고 확장 가능한 분산 멀티미디어 정보 시스템이 개발될 수 있는 범위 내의 모듈러 프레임워크(modular framework)로써 행동하도록 설계되었다. 개방형 분산 하이퍼 미디어 프레임 워크 모델은 QoS(Quality of Service)제공을 위하여 이질적인 분산 멀티미디어 자원 통합의 하이퍼미디어 프레임워크 모델을 하이퍼미디어 세션과 함께 제시함으로써 넓게 분산되어 있는 자원에 대하여 투명하게 접근할 수 있는 방법을 제시하였다.

• 한국경영정보학회:학술대회논문집
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• 한국경영정보학회 2008년도 춘계학술대회
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• pp.232-237
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• 2008

Korea is one of the most advanced countries in terms of nation-wide readiness for conducting complex trade processes in an electronic way. Since various trade processes are well-known for their complexity and cost as well as time consuming characteristics due to required collaborations with involving parties, automation and efficiency are always the main concern of trade-related practitioners. Using information technology can be a possible solution to this problem and Korea has developed the national e-trade infrastructure called "u-Trade Hub." In this paper, we propose the framework to enhance the national integrated e-trade system called "u-Trade Hub," which is ready to be released for commercial use in near future. We propose the framework to upgrade u-Trade Hub in four directions: (1) opening, (2) strengthening community feature, (3) modularization, (4) seeking profitability. In this paper, we study and compare national e-trade environment of other countries such as Singapore and Japan. Then, we analyze and design the enhanced e-trade infrastructure based on Web 2.0.

• 제어로봇시스템학회논문지
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• 제10권9호
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• pp.816-824
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• 2004

In this paper, the framework for accelerating the development of personal robots is presented, which includes the technology such as modularization with its own processing and standardization open to the other developers. Its basic elements are Module-D(Module of DRP I) characterized functionally and VM-D(Virtual Machine of DRP I) arbitrating Module-Ds. They can suggest the effective ways for integrating various robotic components and interfacing among them. Based on this framework, we developed a fully modularized personal robot called DRP I(Dynamically Reconfigurable Personal robot). Its hardware components are easily attached to and detached from the whole system. In addition, each software of the components is functionally distributed. For the materialization of the proposed idea, we mainly focus on the dynamically reconfigurable feature of DRP I.

• 한국CDE학회논문집
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• 제5권1호
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• pp.79-87
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• 2000

This paper presents an integrated but open product development environment for distributed and collaborative design. The web-based framework, called DOME, allows designers to build integrated models using both local and distributed resources, and to collaborate by exchanging services in a network-centric product development environment. Thus, an integrated model can be created while each participant focuses on his or her own area of expertise. A design problem model is created by connecting modules, which represent specific system components, analysis capabilities/software, disciplines, or organizations relevant to the problem. The modules interact with each other using service exchanges based upon the CORBA standard communication protocol. The goal of this framework is tall provide the ability to rapidly construct integrated design problem models to facilitate collaborative design work, improve product quality and reduce development time. Ultimately, it should allow specialized engineering applications and design problem models to operate under a common design environment.