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- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
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RISS 인기검색어
- 검색키워드
- 저자 : Divya Udayan J (검색결과 7 건)
- 무료
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ARCHITECTURAL ANALYSIS OF CONTEXT-AWARE SYSTEMS IN PERVASIVE COMPUTING ENVIRONMENT
Divya Udayan J,HyungSeok Kim 한국HCI학회 2012 한국HCI학회 학술대회 Vol.2012 No.1
Context aware system are those systems that are aware about the environment and perform productive functions automatically by reducing human computer interaction(HCI). In this paper, we present common architecture principles of context-aware systems to explain the important aspects common to most context aware architectures. We introduce various existing context aware architectures and have compared those architectures based on the design principles and have done an analyses on the different elements in the context aware computing based on the presented system. We also propose a new architecture based on broker-centric middleware and using ontology reasoning mechanism together with an effective behavior based context agent that would be suitable for the design of context-aware architectures in future systems.
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ONTOLOGY OF 3D VISUALIZATION FOR URBAN NAVIGATION
Divya Udayan J,HyungSeok Kim 한국HCI학회 2013 한국HCI학회 학술대회 Vol.2013 No.1
Mobile information systems especially navigation based systems are increasingly growing due to its popularity and availability among the common public. The drawback of the current system is that, it is not user-friendly and needs high computational resource. The same information is provided for all users without distinction of their familarity and experience with the city. Also, it requires high computational resource for visualizing highly populated city models. In this paper, we address the issues related to the urban visual simulation by proposing a formal representation of the visualization techniques in the form of ontology of semantic information. Also, we propose different level of details (LOD) mechanism for different users depending on the user intension and expected services. The final outcome of this research is believed to provide a fundamental information structure for cognitive urban navigation depending on the user.
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Fractal Based Method on Hardware Acceleration for Natural Environments
Divya Udayan J,HyungSeok Kim,Jun Lee,Jee-In Kim 한국정보기술융합학회 2013 JoC Vol.4 No.2
Natural scenes from the real world are highly complex, such that the modeling and rendering of natural shapes, like mountains, trees and clouds, are very difficult and time consuming and require a huge amount of memory. Intuitively, the critical characteristics of natural scenes are their selfsimilarity properties. Motivated by the self-similarity feature of the natural scenes that surround us, we present a hardware accelerated fractal based rendering method for natural environments. To illustrate the problem that classical geometry has in dealing with natural objects, we considered the basic fractal example as the Mandelbrot set which is a 2D structure. We examined the serial algorithm of this set and devised a parallel algorithm for implementation on a massive parallel graphics processing unit (GPU) using the computer unified device architecture (CUDA) programming model. We also considered the modeling of 3D fractals such as terrains and evaluated its performance both in terms of execution time and hardware acceleration. Performance is evaluated in terms of execution time and it was observed that a parallel implementation of the method on a GeForce GTX 650 GPU is on average 2X times faster than its sequential implementation. The running behavior of the system at various system states is also evaluated to strongly support our approach.
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ARCHITECTURAL ANALYSIS OF CONTEXT-AWARE SYSTEMS IN PERVASIVE COMPUTING ENVIRONMENT
Udayan J., Divya,Kim, HyungSeok HCI Society of Korea 2013 한국HCI학회 논문지 Vol.8 No.1
Context aware systems are those systems that are aware about the environment and perform productive functions automatically by reducing human computer interactions(HCI). In this paper, we present common architecture principles of context-aware systems to explain the important aspects of context aware systems. Our study focuses on identifying common concepts in pervasive computing approaches, which allows us to devise common architecture principles that may be shared by many systems. The principles consists of context sensing, context modeling, context reasoning, context processing, communication modelling and resource discovery. Such an architecture style can support high degree of reusability among systems and allows for design flexibility, extensibility and adaptability among components that are independent of each other. We also propose a new architecture based on broker-centric middleware and using ontology reasoning mechanism together with an effective behavior based context agent that would be suitable for the design of context-aware architectures in future systems. We have evaluated the proposed architecture based on the design principles and have done an analyses on the different elements in context aware computing based on the presented system.
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ARCHITECTURAL ANALYSIS OF CONTEXT-AWARE SYSTEMS IN PERVASIVE COMPUTING ENVIRONMENT
Divya Udayan J,HyungSeok Kim 한국HCI학회 2013 한국HCI학회 논문지 Vol.8 No.1
Context aware systems are those systems that are aware about the environment and perform productive functions automatically by reducing human computer interactions(HCI). In this paper, we present common architecture principles of context-aware systems to explain the important aspects of context aware systems. Our study focuses on identifying common concepts in pervasive computing approaches, which allows us to devise common architecture principles that may be shared by many systems. The principles consists of context sensing, context modeling, context reasoning, context processing, communication modelling and resource discovery. Such an architecture style can support high degree of reusability among systems and allows for design flexibility, extensibility and adaptability among components that are independent of each other. We also propose a new architecture based on broker-centric middleware and using ontology reasoning mechanism together with an effective behavior based context agent that would be suitable for the design of context-aware architectures in future systems. We have evaluated the proposed architecture based on the design principles and have done an analyses on the different elements in context aware computing based on the presented system.
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