• Biotechnology and Bioprocess Engineering:BBE
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• v.10 no.5
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• pp.400-407
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• 2005

Reverse engineering is defined as the process where the internal structures and dynamics of a given system are inferred and analyzed from external observations and relevant knowledge. The first part of this paper surveys existing techniques for biosystem reverse engineering. Network structure inference techniques such as Correlation Matrix Construction (CMC), Boolean network and Bayesian network-based methods are explained. After the numeric and logical simulation techniques are briefly described, several representative working software tools were introduced. The second part presents our component-based software architecture for biosystem reverse engineering. After three design principles are established, a loosely coupled federation architecture consisting of 11 autonomous components is proposed along with their respective functions.

• Proceedings of the IEEK Conference
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• 2000.06c
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• pp.59-62
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• 2000

A software application builder has designed and partially implemented a E-Business software system using several reusable in-house software components. The builder finds an externally available third-party software components that satisfies solve desired functionality or behavior. We need systematic classification of the component from the domain. We propose a reference architecture of E-Business domain. It is used to search and reuse requiring components.

• 한국IT서비스학회:학술대회논문집
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• 2003.05a
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• pp.647-664
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• 2003

[ $\circ$ ] Enterprise architecture is essential for ROI of e-Enterprise. $\circ$ An architecture is described from business, application, data and technical views and these must be complete and consistent. $\circ$ UML-based CBD is currently the best approach to obtaining architecture-centric, flexible and interoperable systems. $\circt$ Reuse of architecture, components, shared services and app frameworks is key to achieving both quality and productivity. $\circ$ Web service, the NBT, cannot be tapped without the architecting capability. $\circ$ Architects with world-class domain as well as software engineering knowledge are key to success of Korean software industry.

• IEMEK Journal of Embedded Systems and Applications
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• v.2 no.4
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• pp.242-250
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• 2007

Wireless sensor networks are subject to highly heterogeneous system requirements in terms of their functionality and performance due to their broad application areas. Though the heterogeneity hinders the opportunity of developing a single universal platform for sensor networks, efforts to provide uniform, inter-operable and scalable ones for sensor networks are still essential for the growth of the industry as well as their technological advance. As a part of our work to develop such a robust platform, this paper presents the software architecture for sensor nodes with focus on our sensor node operating system and its configuration methodology. Addressing principle issues in its design space which includes programming, execution, task scheduling and software layer models, our architecture is highly reconfigurable with respect to system resources and functional requirements and also highly efficient in supporting multi-threading under small system resources.

• Journal of Internet Computing and Services
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• v.15 no.1
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• pp.1-17
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• 2014

Flight software operated on the on-board computers in the satellite has requirements such as real-time, high reliability. These requirements make dependency between the flight software and operating environments. Further, whenever a new system is built, such problem drives that all flight software are redeveloped. Thus, the dependency problem between them should be solved. And the problem can be resolved by improving the portability of the flight software. In order to improve the portability it is required to minimize the porting cost. In this paper, we classify the portability with the portability achieving methods. Using the classified portability, we propose a platform architecture that is based on the IMA concept and provides various portability capabilities. The proposed architecture enables us to solve the problem about the development of the flight software.

• KIPS Transactions on Software and Data Engineering
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• v.12 no.7
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• pp.285-294
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• 2023

As software grows continuously in scale and complexity, the role of software architecture has become increasingly important across various industries. Although software architects often rely on their experience and intuition when designing such architecture, there is a variety of methodologies being researched for architecture design. However, these methodologies do not address the specific effects of applying multiple architectural patterns to a system or the sequence in which they should be applied. In this study, we explain the variation in architectural design results depending on the order in which the same set of architectural patterns is applied to a single system. Based on this phenomenon, we identify requirements for applying architectural patterns and propose a method of classifying the patterns to be applied. We also propose a prioritization process for requirements to efficiently apply the classified patterns in a specific order. Finally, we show a case study that prioritizing requirements based on architectural pattern types is beneficial for efficient software architecture design in terms of quality attributes.

• KIPS Transactions on Software and Data Engineering
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• v.4 no.11
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• pp.487-498
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• 2015

Traceability enables software developers to trace up the changes occurring in software artifacts. In software product line, traceability is more complex than traceability in a single product as commonality and variability should be considered. Modeling traceability between features and requirements has been proposed in the past. However, traceability between requirements and architecture has more factors to consider, including many-to-many mappings and hierarchical structure of architectures. This paper proposes a method of systematically constructing platform traceability between platform requirements and platform architecture. This paper also shows the efficacy of the proposed mechanism through case studies.

• The KIPS Transactions:PartD
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• v.9D no.5
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• pp.877-886
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• 2002

The problem of software reuse is dealt in two approaches. One is to build a new software by composing of the built-in components, and the other is to reuse architectural patterns that most of software system is generally composed of. Although the two approaches are important in design of software architecture, we could find outstanding difference in what kind of building blocks they use. The component based software design makes uses of building blocks whose contents are filled in by someone, on the other hand, the architectural pattern based software design is not interested in the contents of building blocks, but in the framework for building blocks including relationship of the building blocks. The paper purposes to find architectural patterns which are commonly found in diverse applications and help software architects reuse them in the software design process. We refine the architectural styles which is the well-known concept for software architecture design, and refine them as architectural components or templates which can be parts of software architecture.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.3
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• pp.1063-1082
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• 2018

The concept of SDN (Software Defined Networking) endows the network with programmability and significantly improves the flexibility and extensibility of networks. Currently a plenty of research works on introducing SDN into wireless networks. Most of them focus on the innovation of the SDN based architectures but few consider how to realize the global perception of the network through the controller. In order to address this problem, a software defined carrier grade Wi-Fi framework called SWAN, is proposed firstly. Then based on the proposed SWAN architecture, a blueprint of introducing the traditional NSA (Network Situation Awareness) into SWAN is proposed and described in detail. Through perceiving various network data by a decentralized architecture and making comprehension and prediction on the perceived data, the proposed blueprint endows the controllers with the capability to aware of the current network situation and predict the near future situation. Meanwhile, the extensibility of the proposed blueprint makes it a universal solution for software defined wireless networks SDWNs rather than just for one case. Then we further research one typical use case of proposed NSA blueprint: network performance awareness (NPA). The subsequent comparison with other methods and result analysis not only well prove the effectiveness of proposed NPA but further provide a strong proof of the feasibility of proposed NSA blueprint.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.5 no.2
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• pp.313-329
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• 2011

To provide a seamless network to customers, Internet service providers must promptly detect and control abnormal traffic. One approach is to shorten the traffic information measurement cycle. However, performance degradation is inevitable if traffic measurement servers merely shorten the cycle and measure all traffic. This paper presents a software architecture that can measure traffic more frequently without degrading performance by estimating the level of abnormal traffic. The algorithm in the architecture estimates the values of the interface group objects in MIB by using the IP group objects thereby reducing the number of measurements and the size of measured data. We evaluated this architecture on part of Internet service provider's IP network. When the traffic was measured 5 times more than before, the CPU usage and TPS of the proposed scheme was 7% and 41% less than that of the original scheme while the false positive rate and false negative rate were 3.2% and 2.7% respectively.