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In this paper, we study the Hermitian positive definite solutions of the nonlinear matrix equation X + A* X-2 A = I . Suppose X is a Hermitian positive definite solution of this equation. We discuss the relation between X and A by the eigenvalue and eigenvector of X and A respectively.
Let A be an n x n r-Circulant matrices. The r-circulant matrices have wide application in numerical computation, molecular vibration, image process, signal processing, coding theory, low-density parity-check codes and oil investigation etc in recent years. Motivated by [Wang Jinlin, Y I Fuxia (2008)], in this paper, by using elementary transformation of row and column, we present a fast cogredient...
In this paper, the performance of traffic based adaptive (TBA) and size based adaptive (SBA) backoff algorithms for IEEE 802.11 DCF has been evaluated. TBA backoff algorithm utilizes contention status in the channel for adjusting the backoff algorithm but SBA backoff algorithm assigns different priority levels based on packet size to traffic loads which is involved with best effort and real time traffic...
This paper presents reports a design and development of an interactive map using Scalable Vector Graphics (SVG). In this paper we used this map to simulate traffic congestion at the tourist attraction spot of Kuching Waterfront, Sarawak. We argue that with our map application, the tourists are able to plan their way by finding and selecting the shortest path along the intended route.
This paper presents reports a design and development of the interactive map using Scalable Vector Graphics (SVG) that can be used to find the shortest path. Using our interactive map, the user will be able to set the route or path to the desired location. If that path is congested, the map will find the second shortest path to the user. In the usability study, we have tested the map with the mean...
The controlled distribution of a fluid to the entrance surface of a process, or into the volume of equipment, is an important issue for various aspects of process performance. The flow field in the inlet double-bend distributor and single-bend distributor were obtained through the numerical solution of the governing partial differential equations including the conservation equations of mass and momentum...
The paper describes a location-aware travel guide prototype that was implemented into a Nokia Symbian Series 60 phone with Location API (JSR-179) support. It contains relevant travelling information that could assist users while they are travelling or when they arrive at a particular destination. The objectives of the study were to discover user preferences towards fisheye and list style menus in...
The paper presents a theoretical study of the heat transfer and thermodynamic performance for a rotary magnetic refrigerator with an active magnetic regenerator (AMR). The theoretical models were proposed for the refrigerator with AMR using two different kinds of heat transfer channel designs, one is packed gadolinium bed with porous magnetic materials, and another is packed gadolinium bed with micro...
This article take Heilongjiang Province as example, explore some problems of financial services in China underdevelopment rural areas under the perspective of the global financial crisis, and put forward some solutions, in order to activate the rural financial market adapt to a package of economic stimulus plans made by government, provide better financial support service, and provide stronger financial...
Botnet is one of the most recent tools used in cyber-crime including distributed denial of service attacks, phishing, spamming, and spying on remote computers. These days, governments, business, and individuals are facing catastrophic damages caused by hackers using malicious botnets. It is a major challenge for cyber-security research community to combat the emerging threat of botnets. Current network...
Since 3D models have been used in wide range of industries, such as entertainment, architecture, medical, etc, the availability of tools to ease the creation of 3D models is important. This paper proposes and implements an algorithm for converting 2D image into sequence of curves on 3D flat model. This work is a part of a system for applying detail features captured from 2D image into 3D model. With...
Electronic community (e-community) has been a vital platform among members of a special interest group (SIG). Compared to other interest groups, technical SIG groups require more beneficial communications and materials to be shared among the members. However, they may encounter a lot of challenges to draw the interest among the members in sharing their knowledge voluntarily. A lot of knowledge sharing...
GPSR [17] [19] is one of the most emerging protocols in MANET. But some limitations kept it from widespread implementation. Absence of obstacles is a major requirement in GPSR packet forwarding. Finding out the optimal path also one of the basic concerns in the deployment of GPSR. We study the GPSR protocol and found some problems of it. We propose two novel schemes that (i) Overcoming the limitations...
Knowledge of English in the Philippines is important not only in the work place, but as well as in education. English is the primary language of instruction in the Philippines, even in public schools. Students who have difficulty understanding English will also have trouble with the other subjects like Science and Math. However, there is a lack of qualified English school teachers, particularly in...
In today's education scenario, educators intentionally and unintentionally use stories as part of their teaching tool to increase students' understanding. While storytelling is widely recognized tool in classroom teaching, its implementation and acceptance in higher education institution in Malaysia is still unclear. This paper reports a case study that explores the perception of educators in the...
English learning involves memorization and practice of vocabularies. It is widely known that English learning should pay great attention to vocabulary learning, and what's more, the vocabulary learning is considered to be a key issue for English learning because vocabularies are fundamental in an English sentence. This study proposes a study system of English vocabulary learning based on theory of...
According to the projections of UNIDO, the domestic coal reserves would exhaust, if the demand by consuming industries continue to grow at the current pace. It also leads to climate change. Biopower is a sustainable green technology to tackle this problem. Though there is huge potential for biomass, the industry faces some challenges. Higher generation cost, competition, biomass invasion etc. are...
Text in video is a compact but effective clue for video indexing and summarization. In this paper, we propose an edge-based video text extraction approach with low computation, which can automatically detect and extract text from complex video frames. We first detect the edge maps of both an intensity image and its binarized image, and merge the two into one edge map, which contains less edge pixels...
Segmentation of vascular structures of retina for implementation of Clinical diabetic retinopathy decision making systems is presented in this paper. As retinal vascular structure is with thin blood vessels, prediction accuracy is highly dependent upon the segmentation and preprocessing schemes. Complex GSZ shock filters have been used for noise suppression and edge enhancement. Binarization algorithms...
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