• Journal of information and communication convergence engineering
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• v.2 no.4
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• pp.219-223
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• 2004

MMS has been seen as the key application in its entry into the 3G mobile markets. Furthermore, the combination of WLAN and 3G wireless technologies will make MMS service more popular, bringing benefits to both service providers and their customers. To realize seamless MMS service over WLAN and CDMA2000 networks, we design and implement new platform architecture by reusing the existing standards and network elements at the same time. We employ loose coupling approach and Mobile IP approach to propose new platform architecture, interfacing MMSC with many existing components. Based on our platform architecture, we also present seamless MMS delivery implementations that can't be possible within the current MMS reference architecture. This paper will make a contribution for service providers to offer their customers with seamless MMS service over WLAN and CDMA2000 networks.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.10 no.2
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• pp.444-461
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• 2016

A power-saving mechanism for smartphone devices is developed by analyzing the features of data that are received from Internet of Things (IoT) sensors devices to optimize the data processing policies. In the proposed GreenIoT architecture for power-saving in IoT, the power saving and feedback mechanism are implemented in the IoT middleware. When the GreenIoT application in the power-saving IoT architecture is launched, IoT devices collect the sensor data and send them to the middleware. After the scanning module in the IoT middleware has received the data, the data are analyzed by a feature evaluation module and a threshold analysis module. Based on the analytical results, the policy decision module processes the data in the device or in the cloud computing environment. The feedback mechanism then records the power consumed and, based on the history of these records, dynamically adjusts the threshold value to increase accuracy. Two smart living applications, a biomedical application and a smart building application, are proposed. Comparisons of data processed in the cloud computing environment show that the power-saving mechanism with IoT architecture reduces the power consumed by these applications by 24% and 9.2%.

• Journal of The Korea Institute of Healthcare Architecture
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• v.7 no.1
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• pp.23-31
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• 2001

In order to improve their hospital services in unlimited competitive situations, the general hospitals, particularly, have since the 1990s been concentrating more on hospital information processing systems and the automation of the patients' convenience. They also give priority to the advance of integrated hospital information systems centred around the patients. Introducing more progressive information technology to already established hospitals, the OPD has been most affected by HIS because there are a lot of patients and doctors. On this background, this study analyse the change of OPD and some related departments around the 1990s with the general hospitals as it's object. It investigates the way of building hospitals and presents some information about the planning of building hospitals.

• International conference on construction engineering and project management
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• 2009.05a
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• pp.835-840
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• 2009

Lately, Building Information Modeling (BIM) emerges as the most promising technology, now is expected to bring a great deal of improvement of productivity in every aspect of the construction industry. One of the BIM based scheduling is to use BIM model as a base for applying to schedule analysis and simulation tools. This type of tools may incorporate a various types of information such as the building model, construction method information, resource information, productivity information, rules and constraints to optimize activity sequencing. This paper proposes a framework of BIM based simulating system which can be used to optimize construction processes, especially for the floor construction cycle. For the purpose, all of the necessary components of the system will be defined and represented, and next an algorithm will be introduced to demonstrate the principle of simulating operation. The benefits of this technique are basically two : to test and optimize construction methods in respect of the construction duration and to reduce the floor construction cycle.

• Journal of the Korean Society for information Management
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• v.23 no.1 s.59
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• pp.301-333
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• 2006

The study is to propose the reference model of Korean record management for integrated information resources management, based on the Korean regulative and administrative environments. Therefore, the study suggests the reasons why the electronic records must be come to the one of the national knowledge and information resources and reviews several integrated information management systems such as GKMS, KADO, ERA, EUN, and COVAX. Next, the study proposes the integrated records management system architecture, integrated national knowledge and information management environment architecture, and information technology architecture for Integrating resource management environment.

• JSTS:Journal of Semiconductor Technology and Science
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• v.16 no.1
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• pp.118-125
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• 2016

This paper presents a new high-efficient algorithm and architecture for an elliptic curve cryptographic processor. To reduce the computational complexity, novel modified Lopez-Dahab scalar point multiplication and left-to-right algorithms are proposed for point multiplication operation. Moreover, bit-serial Galois-field multiplication is used in order to decrease hardware complexity. The field multiplication operations are performed in parallel to improve system latency. As a result, our approach can reduce hardware costs, while the total time required for point multiplication is kept to a reasonable amount. The results on a Xilinx Virtex-5, Virtex-7 FPGAs and VLSI implementation show that the proposed architecture has less hardware complexity, number of clock cycles and higher efficiency than the previous works.

• Journal of Ubiquitous Convergence Technology
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• v.1 no.1
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• pp.35-41
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• 2007

In mobile ad-hoc wireless networks, one of the most important challenging issues is how to conserve energy, maximizing the lifetime of route(networks) in the view points of both power and mobility of nodes. However, many transmission methods presented in the previous works can not satisfy these two objectives simultaneously. To obtain these two goals, in this paper we propose an architecture to support power saving transmission services with route stability in mobile ad-hoc wireless networks. The proposed architecture consists of two parts, the underlying route stability method to support route(network) lifetime and the power saving transmission methods. The performance evaluation of the proposed architecture is achieved via simulation and analysis.

• International conference on construction engineering and project management
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• 2011.02a
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• pp.17-22
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• 2011

A considerable number of construction disasters occur on pathways. Safety management is usually performed on construction sites to prevent accidents in activity areas. This means that the safety management level of hazards on pathways is relatively minimized. Many researchers have noted that hazard identification is fundamental to safety management. Thus, algorithms for helping safety managers to identify hazardous areas are developed using automated data collection technology. These algorithms primarily search for potential hazardous areas by comparing workers' location logs based on a real-time location system and optimal routes based on BIM. Potential hazardous areas are filtered by identified hazardous areas and activity areas. After that, safety managers are provided with information about potential hazardous areas and can establish proper safety countermeasures. This can help to improve safety on construction sites.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11a
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• pp.157-160
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• 2003

최근 그리드 미들웨어 개발 연구는 과학적 어플리케이션뿐만 아니라 상업적인 비즈니스 어플리케이션에서 활용가능하도록 웹서비스(Web service) 기술을 활용하고 있다. 이를 통해 정의된 그리드 서비스 구조를 Open Grid Service Architecture(OGSA)라고 한다. OGSA 를 통해 정의된 그리드 서비스 개념은 GGF 를 통해 OGSI 라는 표준 기술 명세서로 채택되었다. OGSI 를 지원하는 그리드 서비스는 확장성있고 상호운용성을 높여 다른 서비스와의 연동 및 통합을 쉽게 이루게 한다. 본 논문에서는 기존의 그리드 정보 서비스를 OGSI 기반의 서비스 구조인 Grid Advanced Information Service(GAIS)로 재구성한다. CAIS 는 그리드 미들웨어의 기본 서비스로써 다음의 특징을 가진다. 우선, 기존의 GT3 기반의 그리드 정보 서비스와의 서비스 인터페이스 측면에서 호환성을 가지면서, 내부적으로 동적 Virtual Organiaation(VO)관리 기능을 추가로 가진다. 그리고, 여러 GAIS 들간의 VO 정보를 관리할 수 있도록 Peer-to-peer 기반의 정보 분산기능을 가진다. 또한, GAIS 내 등록된 서비스들에 대해서는 Service data에 따른 그룹화를 통해 서비스 discovery기능을 강화하게 된다. 그리드 사용자는 GAIS 를 통해 다양한 VO 에 대한 정보를 검색하고, VO 의 생성 및 참여할 수 있고, 자신이 속한 VO 에 대하여 효율적으로 자원정보 및 서비스 데이터(Service Data)를 접근할 수 있다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.11 no.3
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• pp.197-203
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• 2011

Personal Identifiable Information (PII) is considered information that identifies or can be used to identify, contact, or locate a person to whom such information pertains or that is or might be linked to a natural person directly or indirectly. In order to recognize such data processed within information and communication technologies such as PII, it should be determined at which stage the information identifies, or can be associated with, an individual. For this, there has been ongoing research for privacy protection mechanism to protect PII, which now becomes one of hot issues in the International Standard as privacy framework and privacy reference architecture. Data processing flow models should be developed as an integral component of privacy risk assessments. Such diagrams are also the basis for categorizing PII. The data processing flow may not only show areas where the PII has a certain level of sensitivity or importance and, as a consequence, requires the implementation of stronger safeguarding measures. This paper propose a standard format for satisfying the ISO/IEC 29100 "Privacy Framework" and shows an implementation example for privacy reference architecture implementing privacy controls for the processing of PII in information and communication technology.