Browsing by Author "Chang, Chih-Hung"

Now showing 1 - 13 of 13

A Low-Cost Green IT Concept Design of VHSP based on Virtualization Technology
(2009)
Chang, Chih-Hung
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Hsiao, Tzu-Chien
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資訊學院碩士在職專班
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Degree Program of Computer Science
In this paper, we proposed a low-cost and flexible Virtual Honeynet Security Platform (VHSP) and a design methodology of the Virtual Honeypot Redirect Mechanism (VHRM), which is All-in-One virtual system architecture, design and implement such platform to verify the effectiveness of the architecture and method that designed in this paper. Moreover, the main contribution of this work is not only to propose a more optimum utilization strategies for S/W and H/W resources, but also a research platform of network security with higher flexibility, usability and this conforms to the latest concept of Green IT design as well.
Applying Cloud computing technologies to Gerontology and Geriatrics Health Care System (GGHCS)
(2013)
Hsu, Tse-Chuan
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Chang, Chih-Hung
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Chu, William C.
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Ho, Shinn-Ying
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Hsueh, Nien-Lin
At present, the cloud is now being acclaimed as a less expensive with low maintenance, entirely secure and compatible alternative to traditional computing networks used by physicians and healthcare organizations worldwide. These sensors will collect all the information that is required and the sensors will transmit it into the cloud. These sensors are always-on, real-time data compiling; it rules out manual collecting work and possibility of typing errors, and; it reposes the deployment process, as wireless networking signifies no need for cabling or other physical setup. As healthcare IT turns more widely used, and data storage and retrieval costs raise, more hospitals are anticipated to adopt cloud computing, encouraging the overall healthcare IT market with great potential impact on Gerontology and Geriatrics HealthCare System.
Decidability of Irreducible Tree Shifts of Finite Type
(1970-01-01)
Ban, Jung-Chao
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Chang, Chih-Hung
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Huang, Nai-Zhu
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Wu, Yu-Liang
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應用數學系
We reveal an algorithm for determining the complete prefix code irreducibility (CPC-irreducibility) of dyadic trees labeled by a finite alphabet. By introducing an extended directed graph representation of tree shift of finite type (TSFT), we show that the CPC-irreducibility of TSFTs is related to the connectivity of its graph representation, which is a similar result to one-dimensional shifts of finite type.
DEVELOPMENT OF A DYNAMIC TRIP-PLANNING SYSTEM FOR SEAMLESS FEEDER INFORMATION SERVICE
(2009-01-01)
Su, Jau-Ming
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Chang, Chih-Hung
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Lin, Chih-Kang
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Chang, Chih-Tang
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運輸與物流管理系註：原交通所+運管所
The multi-model between the real-time inter-city and intra-city transit information are not taken into consideration by the existed trip planning systems in Taiwan. Besides, during the process of trip path connections, the real-time transit information and the access mode for transit station is not provided. The planning result cannot fulfill user's requirement, thus user's willingness of utilizing public transportation is low. This paper develops a seamless transit trip planning system which takes inter-city transportations as mainstays and considers the all of feeder modes, such as bicycle, private vehicles or transit service, to integrate the related trip information in-between such as routes, schedules, and AVL information. In this system, the seamless trip-planning algorithm which also proposes in this study is the main component of planning travelers' trip.
Entropy Bifurcation of Neural Networks on Cayley Trees
(2020-01-01)
Ban, Jung-Chao
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Chang, Chih-Hung
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Huang, Nai-Zhu
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應用數學系
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Department of Applied Mathematics
It has been demonstrated that excitable media with a tree structure performed better than other network topologies, therefore it is natural to consider neural networks defined on Cayley trees. The investigation of a symbolic space called tree-shift of finite type is important when it comes to the discussion of the equilibrium solutions of neural networks on Cayley trees. Entropy is a frequently used invariant for measuring the complexity of a system, and constant entropy for an open set of coupling weights between neurons means that the specific network is stable. This paper gives a complete characterization of entropy spectrum of neural networks on Cayley trees and reveals whether the entropy bifurcates when the coupling weights change.
Entropy dimension of shift spaces on monoids
(2020-07-01)
Ban, Jung-Chao
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Chang, Chih-Hung
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Huang, Nai-Zhu
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應用數學系
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Department of Applied Mathematics
We consider the entropy dimension of G-shifts of finite type for the case where G is a non-Abelian monoid. Entropy dimension tells us whether a shift space has zero topological entropy. Suppose the Cayley graph C-G of G has a finite representation (that is, {C-gG : g is an element of G} is a finite set up to graph isomorphism), and relations among generators of G are determined by a matrix A. We reveal an association between the characteristic polynomial of A and the finite representation of the Cayley graph. After introducing an algorithm for the computation of the entropy dimension, the set of entropy dimensions is related to a collection of matrices in which the sum of each row of every matrix is bounded by the number of leaves of the graph. Furthermore, the algorithm extends to G having finitely many free-followers.
Metropolitan-scale grid environment: The implementation and applications of TIGER grid
(2006)
Yang, Chao-Tung
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Han, Tsu-Fen
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Shih, Wen-Chung
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Chiang, Wen-Chung
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Chang, Chih-Hung
Internet computing and Grid technologies promise to change the way we tackle complex problems. Harnessing these new technologies effectively, it will transform scientific disciplines ranging from high-energy physics to life sciences. This paper describes a metropolitan-scale Grid computing platform named TIGER Project (standing for Taichung Integrating Grid Environment and Resource), which basically interconnects universities and high schools\' Grid computing resources and sharing available resources among them, for investigations in system technologies and high performance applications. This novel project shows the viability of implementation of such project in a metropolitan city.
ON THE DENSE ENTROPY OF TWO-DIMENSIONAL INHOMOGENEOUS CELLULAR NEURAL NETWORKS
(2008-11-01)
Ban, Jung-Chao
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Chang, Chih-Hung
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應用數學系
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Department of Applied Mathematics
This investigation elucidates the dense entropy of two-dimensional inhomogeneous cellular neural networks (ICNN) with/without input. It is strongly related to the learning problem (or inverse problem); the necessary and sufficient conditions for the admissibility of local patterns must be characterized. For ICNN with/without input, the entropy function is dense in [ 0, log 2] with respect to the parameter space and the radius of the interacting cells, indicating that, in some sense, ICNN exhibit a wide range of phenomena.
On the structure of multi-layer cellular neural networks
(2012-04-15)
Ban, Jung-Chao
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Chang, Chih-Hung
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Lin, Song-Sun
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應用數學系
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Department of Applied Mathematics
Let Y subset of {-1, 1}(Z infinity xn) be the mosaic solution space of an n-layer cellular neural network. We decouple Y into n subspaces, say Y-(1), Y-(2), ... , Y-(n), and give a necessary and sufficient condition for the existence of factor maps between them. In such a case, Y-(i) is a sofic shift for 1 <= i <= n. This investigation is equivalent to study the existence of factor maps between, two sofic shifts. Moreover, we investigate whether Y-(i) and Y-(j) are topological conjugate, strongly shift equivalent, shift equivalent, or finitely equivalent via the well-developed theory in symbolic dynamical systems. This clarifies, in a multi-layer cellular neural network, each layer's structure. As an extension, we can decouple Y into arbitrary k-subspaces. where 2 <= k <= n, and demonstrates each subspace's structure. (C) 2012 Elsevier Inc. All rights reserved.
On the Structure of Two-Layer Cellular Neural Networks
(2013)
Ban, Jung-Chao
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Chang, Chih-Hung
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Lin, Song-Sun
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應用數學系
;
Department of Applied Mathematics
Let Y subset of{-1,1}(Z infinity x2) be the mosaic solution space of a two-layer cellular neural network (TCNN). We decouple Y into two subspaces, say Y-(1) and Y-(2), and give a necessary and sufficient condition for the existence of factor maps between them. In such a case, Y-(i) is a sofic shift for i = 1,2. This investigation is equivalent to study the existence of factor maps between two sofic shifts. Moreover, we investigate whether Y-(1) and Y-(2) are topological conjugate, strongly shift equivalent, shift equivalent, or finitely equivalent via the well-developed theory in symbolic dynamical systems. This clarifies, in a TCNN, each layer\'s structure.
Spatial complexity in multi-layer cellular neural networks
(2009-01-15)
Ban, Jung-Chao
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Chang, Chih-Hung
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Lin, Song-Sun
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Lin, Yin-Heng
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應用數學系
This study investigates the complexity of the global set of output patterns for one-dimensional multi-layer cellular neural networks with input. Applying labeling to the output space produces a sofic shift space. Two invariants, namely spatial entropy and dynamical zeta function, can be exactly computed by studying the induced sofic shift space. This study gives sofic shift a realization through a realistic model. Furthermore, a new phenomenon, the broken of symmetry of entropy, is discovered in multi-layer cellular neural networks with input. (C) 2008 Elsevier Inc. All rights reserved.
Spatial complexity in multi-layer cellular neural networks
(2009-01-15)
Ban, Jung-Chao
;
Chang, Chih-Hung
;
Lin, Song-Sun
;
Lin, Yin-Heng
;
應用數學系
This study investigates the complexity of the global set of output patterns for one-dimensional multi-layer cellular neural networks with input. Applying labeling to the output space produces a sofic shift space. Two invariants, namely spatial entropy and dynamical zeta function, can be exactly computed by studying the induced sofic shift space. This study gives sofic shift a realization through a realistic model. Furthermore, a new phenomenon, the broken of symmetry of entropy, is discovered in multi-layer cellular neural networks with input. (C) 2008 Elsevier Inc. All rights reserved.
The Development of Cloud Computing and Its Challenges for Taiwan
(2012)
Chu, William C.
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Chang, Chih-Hung
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Lu, Chih-Wei
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Chen, Juei-Nan
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Wang, Feng-Jian
Along with the growing attention, cloud computing is not only changing the computing paradigm, but also the style of computing in which dynamically scalable and virtualized resources are provided as services over the Internet. Cloud computing introduces a lot of chances, as well as, challenges in the new trend. Taiwan has been well known as a major Information Communication Technology (ICT) manufacturing traditionally. Many Taiwan\'s hardware products have been top ranked in the global market. Taiwan has realized the trend that Cloud Computing is leading to and has reacted to integrate its resources from the government, industry, academia, and research centers, by initiating strong incentive programs for cloud computing, with an intension to transform an ICT Island into a Cloud Village. In this article, we describe the status of the development of cloud computing technologies and its future challenges for Taiwan.