In the previous study, the construction guide line of IT infra-structure for a u-City was introduced. However, it is only concentrated on the components and construction procedure for provider-oriented and technology-oriented sensor networks. In this paper the architecture and building process of demander-oriented sensor networks for sustainable u-City service are proposed. In the paper it is described (1) the enhancement methods of the procedure that can be flexibly constructed according to the scale of the project, (2) the methods that can improve the structure from the wireless sensor network such as RFID/USN to the hybrid sensor network, and (3) the consideration factors for providing the sustainable u-City service.

In Computer Science study, practical experience is gained in the computer laboratory, however the laboratory funding and maintenance require huge resources. This is the main reason why virtual computing laboratory implementations in academic environments have increased our major interest. At University of Ljubljana, we are the only higher education institution using virtual laboratories as an integral part of any Computer Science courses not only in Slovenia but also on the Balkans. Initially we have built our own virtual laboratory. Later, we merged our implementation with NCSU VCL and integrated the new virtual laboratory with learning management system and identity management system. We also plan to integrate it with our student information system. In this paper we present our current implementation and future plans, we discuss how this can improve the learning outcomes and present our experiences and results gained in the spring semester of 2010 when used by more than 300 students who were turned out to have little significant technical difficulties. In order to complete two assignments, the students made 8.9 reservations on average, while the minimum of four was needed to accomplish the obligations. 27.5% of the students needed more than 10 reservations (16.8 on average) and are responsible for 52% of total reservations. Further research is needed to find true causes for that fact. Most popular hour of day was 3 pm and 10 pm, while the least popular was 6 in the morning, when no reservations have been made in the whole observed period of three weeks. Research also shows that the students tend to postpone their duties until just before the deadline. The findings enhance our motivation on further research related to keeping students engaged and active through the course.

유비쿼터스 게임은 다양한 센서와 컨텍스트 인식을 기반으로 한 새로운 게임형태이다. 본 연구에서는 유비쿼터스 게임을 지원하기 위한 PSD(Personal Space Director:사용자 공간 관리자)와 서비스 아키텍쳐를 설계 제안한다. PSD는 사용자 공간에 존재하는 센서 및 액츄에이터 디바이스를 관리하며, 이들을 어플리케이션에서 사용하기 용이하도록 하는 API(Application-Program Interface)를 제공하는 기능을 가진다. 또한 PSD가 다양한 센서 디바이스를 지원할 수 있도록 확장성을 가진 구조를 가지도록 설계하였다. 본 연구의 결과는 향후 차세대 유비쿼터스 게임의 개발 및 운영을 위한 서비스 아키텍처를 제시하고 있다. 이는 유비쿼터스 게임 분야에서 기반 역할을 하는 원천 기술로서 개발된 플랫폼을 활용하여 다양한 게임 컨텐츠의 제작 과정이 효율화될 것으로 기대된다. 특히 유비쿼터스 게임 분야는 기존의 PC 게임과 달리 사용자의 실생활에 몰입되는 것을 주요 성격으로 하는 게임 분야이기 때문에 기존 게임의 단점인 게임 중독이나 은둔형 외톨이 등의 사회문제를 극복하고 사회적인 상호작용을 통해 재미도 느낄 수 있는 보다 인간적인 게임 분야로의 전환이 기대될 수 있다고 하겠다.

  The most fundamental method in IT innovation up to today is the SOA which has been accepted as the standard for the system integration and makes the business more flexible. Although it is important to classify the workflow of enterprise into the unit of

IMO introduced the concept of e-Navigation and proposed MSPs(Maritime Service Portfolios) concept to reduce marine accidents, to improve efficiency of ship operation, port operation, and ship operation technology. Korean e-Navigation defines S1 ~ S5 services, as the service concept focused on domestic e-Navigation service corresponding to IMO MSPs, and is constructing a system as an ongoing project. S2 service (onboard system remote monitoring service) among the concepts of Korean e-Navigation services, is a service concept that judges the emergency level according to risk if an abnormal condition occurs during navigation, and provides corresponding guidance to accident ships based on emergency level. The purpose of this paper is to provide a basic architecture proposal of Korean e-Navigation S2 service navigation safety module, based on the S2 service operation concept. To do this, we conducted a questionnaire survey to ask experts with experience with sailors, to respond to the subjective risk experienced by sailors considering effects of anomalies, including equipment failure relative to sailing and navigational safety. Risk level for each abnormal condition was classified. The basic algorithm design of the navigation safety module is composed of safety index (SI) calculation module based on results of questionnaire and expert opinions, safety level (SL) determination module according to safety index, and corresponding guidance generation module according to safety level. To conduct basic validation of basic architecture of the navigation safety module, simulation of the ship anomaly monitoring was performed, and results have been revealed.

지난 90년대 후반 국가적 차원에서 진행된 각종 정보화 사업으로 인해 다양한 분야에서 많은 양의 정보가 데이터베이스로 구축되어 활용되고 있으며, 이를 통해 수자원 분야에서도 하천관리지리정보시스템(RIMGIS) 및 국가수자원관리종합정보시스템(WAMIS) 등이 개발되었다. 수자원과 관련된 각종 정보시스템들은 효율적인 수자원의 관리 및 이용을 위해 필수적이고 핵심적인 정보들을 중심으로 방대한 양의 데이터베이스가 구축되었다. 이러한 관련 시스템들은 이수, 치수, 환경생태 및 시설물 관리 등 국민의 안전과 직결되는 매우 중요한 자료들을 기반으로 하고 있다.<br>현재 운용되고 있는 물 관련 시스템들은 최근 빈번하게 발생하고 있는 홍수, 가뭄 및 수질오염 사고 등에 대응할 수 있는 각종 정책을 수립하는데 많은 기여를 하고 있다. 그러나 보다 더 효율적이고 과학적인 수재해 대응을 실현하기 위해서는 IT 기술을 적극적으로 활용해 현재 운영되고 있는 물관리 시스템에 대한 효율성을 극대화시킬 필요가 있다. 특히, 다양한 정부부처 및 공공기관에서 구축한 많은 양의 하천정보를 국가적 차원에서 종합적으로 이용하기 위해서는 빅데이터, 클라우드 컴퓨팅 기술, 링크드데이터 기술 등 서비스 지향 아키텍처(SOA)를 기반으로 하는 정보제공 서비스 연구가 필요하다. 이는 다양한 정부부처 및 공공기관에서 구축한 하천정보를 데이터 통합, 연계 및 분산된 데이터를 쉽게 서비스 할 수 있으며, 타 시스템들과 실시간으로 데이터를 교환하여 융복합 서비스 제공이 가능하다. 따라서 본 연구에서는 수재해에 즉각적으로 대응할 수 있는 하천정보의 접속, 교환, 저장 등 서비스 지향 아키텍쳐 기반의 하천정보 제공 서비스를 제시하고자 한다.

A URC, which is a Ubiquitous Robot Companion, provides services to users in ubiquitous computing environments and has advantage of simplifying robot's hardware and software by distributing the complicated functionality of robots to other system. In this paper, we propose SOWL, which is a software architecture for URC robots and a mixed word of SOMAR and CAWL. SOWL keeps the advantages of URC and it also has the loosely-coupled characteristics. Moreover it makes it easy to develop of URC robot software. The proposed architecture is composed of 4 layers: device software, robot software, robot application, and end user layer. Developers of the each layer is able to build software suitable for their requirements by combining software modules in the lower layer. SOWL consists of SOMAR and CAWL engine. SOMAR, which is a middleware for the execution of device software and robot software, is based on service-oriented architecture(SOA) for robot software. CAWL engine is a system to process CAWL which is a context-aware workflow language. SOWL is able to provide a layered architecture for the execution of a robot software. It also makes it possible for developers of the each layer to build module-based robot software.