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2012 42nd European Microwave Conference, EuMC 2012 - Held as Part of 15th European Microwave Week, EuMW 2012

作者： Ikeuchi, Hiroaki Ohta, Isao Kishihara, Mitsuyoshi Kawai, Tadashi School of Engineering University of Hyogo 2167 Shosha Himeji 671-2280 Japan University of Hyogo 8-2-1 Gakuennishi-machi Nishi-ku Kobe 651-2197 Japan Faculty of Computer Science and System Engineering Okayama Prefectural University 111 Kuboki Soja 719-1197 Japan

ISBN: (纸本)9782874870279

This paper suggests a substrate integrated waveguide in honeycomb structure consisting of a number of small holes (air-filled posts) drilled vertically and entirely through both plating-conductor layers of the substrate (HCSIW), and shows a design method of an SIW right-angle corner as an example of its applications. First, the propagation constant of an HCSIW is derived from the simulation results of a commercial em-simulator (HFSS), and then its effective dielectric constant (Εreff) and transmission loss are discussed. It is shown that the Εreff is approximately determined from the ratio of all the cross-section area of the air-filled posts to the remainder dielectric one, and the transmission loss is comparable with that of a common SIW. Next, the SIW right-angle corner is designed by arranging appropriately honeycomb structure. Experimental verification for the designed right-angle corner is also shown. © 2012 EUROPEAN MICROWAVE ASSOC.

关键词： Wave transmission

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Single Transition Constraint for XML Update Validation

Single Transition Constraint for XML Update Validation

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International Conference on Network-Based Information systems (NBIS)

作者： Norfaradilla Wahid Eric Pardede Department of Computer Science and Engineering La Trobe University Melbourne Australia Faculty of Computer Science and Information System Universiti Tun Hussein Onn Malaysia Batu Pahat Malaysia

In this paper, we propose a checking algorithm for dynamic constraint validation during XML updates. Our algorithm is targeted at single transition constraint, which is affected by single node updating. To the best of our knowledge, almost all constraints that have been preserved in the previous XML updates works are for static constraints. On the other hand, dynamic constraints restrict the transition of data from a current state into a new state. The operations that can affect these constraints involve node replacement, value of element and attribute replacement, and insert-delete pairing operations of nodes and their values. We propose a lightweight XML file to store only required data for the validation, i.e. states that need to be changed are extracted from XQuery and original XML documents. For experimentation purposes, we apply the algorithm in Java platform with the support of Schematron for the dynamic constraint and BaseX for parsing XQuery statements. The analysis shows our algorithm performs in cubic growth while still in polynomial efficiency. Nevertheless, our proposed dynamic constraint file is not minimal enough if the query involves indirect states transitions caused by sub queries. We would like to continue and extend the work with more types of dynamic constraint.

关键词： XML Databases Heuristic algorithms Information systems Remuneration Algorithm design and analysis

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Design of a profilograph for mapping pavement in virtual environment

Design of a profilograph for mapping pavement in virtual env...

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International Conference on computer and Communication engineering, ICCCE

作者： Raisuddin Khan Md. Masum Billah Mohiuddin Ahmed Faculty of Engineering International Islamic University Malaysia Malaysia College of Computer Science and Information System Jazan University Saudi Arabia

In this paper, a novel profilograph has been designed and implemented to generate virtual terrain. Profilograph is necessary for civil engineering applications to map pavement smoothness. Traditional profilographs are big in size and take long time for mapping, although they are capable of generating pavement map but unable to show 3D graph. The profilograph proposed in this paper is able to map pavement smoothness faster as well as show 3D graphs of the pavement. This profilograph consists of two subsystems. The first subsystem is a hardware system designed using rate gyros and accelerometers with some wireless communicating module. Another subsystem is the software system developed using OpenGL with supported of C++ and Visual Basic. This software can be connected with the hardware system either using wire or using wireless. The hardware system while driven on the pavement stores the data of the terrain into the database. The software generates 3D graphs of the navigated terrain. This profilograph can be used not only in civil engineering pavement mapping but also in mapping disaster scenario for disaster rescue missions.

关键词： Accelerometers Sensors Roads Mathematical model Vehicles Software Equations

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Red blood cell segmentation using masking and watershed algorithm: A preliminary study

Red blood cell segmentation using masking and watershed algo...

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International Conference on Biomedical engineering (ICoBE)

作者： J. M. Sharif M. F. Miswan M. A. Ngadi Md Sah Hj Salam Muhammad Mahadi bin Abdul Jamil Department of Computer System and Communication Faculty of Computer Science and Inoformation Systems Universiti Teknologi Malaysia Malaysia Department of Electronic Engineering Faculty of Electrical & Electronic Engineering Universiti Tun Hussein Onn Malaysia Malaysia

Image segmentation is the most important step and a key technology in image processing which directly affect the next processing. In human blood cell segmentation cases, many methods were applied for obtaining better results. It is basically an improved visualization to observe blood cell under blood smear process. This paper will present an approach for red blood cell (RBC) segmentation which is a part of study to perform automated counting for RBC. The methods involve are Ycbcr color conversion, masking, morphological operators and watershed algorithm. The combination of Ycbcr color conversion and morphological operator produce segmented white blood cell (WBC) nucleus. Then it is being used as a mask to remove WBC from the blood cell image. Morphological operators involve binary erosion diminish small object like platelet. The resulted RBC segmentation is passing through marker controlled watershed algorithm which handles overlapping cells. The improvement need to be done for both segmentation and overlapped cell handling to obtain better result in the future.

关键词： Image segmentation Blood Image color analysis Microscopy Accuracy Image edge detection

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systematic Literature Review of Missing Data Imputation Techniques for Effort Prediction

Systematic Literature Review of Missing Data Imputation Tech...

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2012 International Conference on Smart Grid systems(ICSGS 2012)

作者： Beatrice Andrew Ali Selamat Dept. of Software Engineering Faculty of Computer Science and Information System Universiti Teknologi Malaysia Skudai Johor 81310 Malaysia

Background:The occurrences of missing data in software project data set bring significant impact on effort *** significant impacts of this problem are wasted information and biased *** common studies conducted to investigate in depth this area is to find sophisticated missing imputation techniques but there are only small numbers of research questioning the quality of ***:This paper aims to systematically analyze researches done on missing data imputation techniques to estimate software effort and review the current approaches exist in the ***:We performed a systematic literature of empirical studies of data imputation techniques published in from 2000-2012.

关键词： software effort prediction,imputation technique,systematic literature review

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A generalised diffusion-based file replication scheme for load balancing in P2P file-sharing networks

A generalised diffusion-based file replication scheme for lo...

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作者： Takaoka, Masanori Uchida, Masato Ohnishi, Kei Oie, Yuji NCOS Laboratory NEC Communication Systems 1753 Shimonumabe Nakahara-ku Kawasaki Kanagawa 211-8666 Japan Department of Electrical Electronics and Computer Engineering Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino-shi Chiba 275-0016 Japan Graduate School of Computer Science and System Engineering Kyushu Institute of Technology 680-4 Kawazu Iizuka Fukuoka 820-8502 Japan

We propose a generalised diffusion-based file replication scheme for load balancing in unstructured P2P file-sharing networks. The generalised method is derived by replacing the replication probability of a peer used in our previous study with a new expression. In the previous expression, the replication probability is defined to be proportional to the difference between its own load and the average load of its neighbour peers. We show here that the replication probability can instead be expressed as a simple average of one defined to be negatively proportional to its own load and one defined to be proportional to the average load of its neighbour peers. The generalised method (a) includes the above three methods as special cases, (b) can control the trade-off between search and load balancing performances, (c) has a physical analogy to diffusion phenomena, and (d) achieves a good balance in the trade-off differently from our previous method. Copyright © 2012 Inderscience Enterprises Ltd.

关键词： Economic and social effects

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Modeling of Fuzzy Logic Control system for Controlling Homogeneity of Light Intensity from Light Emitting Diode

Modeling of Fuzzy Logic Control System for Controlling Homog...

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International Conference on Intelligent systems, Modelling and Simulation (ISMS)

作者： Muhammad Gary Shafer Edi Saputra Kamalrulnizam Abu Bakar Farah Ramadhani Universiti Teknologi Malaysia Faculty of Computer Science and Information System Johor Malaysia Andalas University Department of Electrical Engineering Padang Indonesia

The use of Light Emitting Diode (LED) as the lighting device becomes popular due to its energy-efficient characteristic. However, LED has radiation angle that is relatively smaller than other types of lighting device. This results in heterogeneity of light intensity that received by particular point near the LED. To obtain homogeneity of light intensity, this paper proposes a model of fuzzy logic control system to control illumination of LEDs lamp in a room. This model involves several components, namely LEDs lamp, LED driver, illumination sensor, microcontroller, and a differential transceiver RS-485. The fuzzy logic control system that used in this model uses error of illumination and delta error of illumination as input parameter. As output, this control system will change duty cycle of Pulse Width Modulation (PWM) that used to control illumination of LEDs lamp. Based on experiment result, when expected light intensity is set to 150 Lux, homogeneity of light intensity can be achieved with error less than 2%. In addition, the control system also can reduce energy consumption up to 40% under the experimental environment.

关键词： Control systems LED lamps Fuzzy logic Pulse width modulation Process control

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The relationship between diagnostic coverage and proof test interval for 1002 and 1002D architectures

The relationship between diagnostic coverage and proof test ...

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13th IFAC Symposium on Control in Transportation systems, CTS 2012

作者： Üstoǧlu, Ilker Kaymakçi, Özgür T. Börcsök, Josef Yildiz Technical University Davutpaşa Campus A209 34220 34220 Esenler Istanbul Turkey Yildiz Technical University Davutpaşa Campus A210 34220 34220 Esenler Istanbul Turkey University Kassel Faculty of Electrical Engineering / Computer Science Department of Computer Architecture and System Programming Wilhelmshöher Allee 71 34121 Kassel Germany

ISBN: (纸本)9783902823137

In order to measure the effectiveness of safety protection systems there are several design parameters. Diagnostic coverage factor is one of the most important parameter which influences all architectures. In this short paper the relationship between PFDavg, DC and TI are presented. 1002 and 1002D architectures are considered as examples. © 2012 IFAC.

关键词： Architecture

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Sparse representation approach for variation-robust face recognition using discrete wavelet transform

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International Journal of computer science Issues 2012年第6-3期9卷 275-280页

作者： El-Sayed, Rania Salah El-Nahas, Mohamed Youssri El Kholy, Ahmed Department of Computer science Faculty of Science Al-Azhar University Cairo Egypt Department of Information system Faculty of Engineering Al-Azhar University Cairo Egypt Department of Mathematics Faculty of Science Al-Azhar University Cairo Egypt

Face recognition has become one of the most challenging tasks in the pattern recognition field and it is very important for many applications such as: video surveillance, forensic applications criminal investigations, and in many other fields it is also very useful. In this paper we are using sparse representation approach based on discrete wavelet transform (DWT) to achieve more robustness to variation in lighting, directions and expressions, because sparse representation does not exterminate obstacles posed by several practical issues, such as lighting, pose, and especially facial expressions, which tend to distort almost all the features and can thus compromise the accuracy of sparse representation. The result of new proposed approach is compared with sparse representation approach to show that the proposed approach is more robust to illumination, direction and expression variations than sparse representation. © 2012 International Journal of computer science Issues.

关键词： Discrete wavelet transforms

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An Improved Image Denoising and Segmentation Approach for Detecting Tumor from 2-D MRI Brain Images

An Improved Image Denoising and Segmentation Approach for De...

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International Conference on Advanced computer science Applications and Technologies (ACSAT)

作者： Ahmed Faisal Sharmin Parveen Shahriar Badsha Hasan Sarwar Department of Computer System & Technology Faculty of Computer Science & Information Technology University of Malaya Kuala Lumpur Malaysia Department of Electrical Engineering University of Malaya Kuala Lumpur Malaysia Department of Computer Science and Engineering United International University Dhaka Bangladesh

Image denoising and segmentation are the two most challenging fields in medical image processing particularly when it is application specific. The presence of noise not only degrades the visual quality but also immensely affects the accuracies of segmentation which is essential for medical diagnosis process. In this paper, we present an improved approach for denoising and segmentation of 2-D magnetic resonance brain images for detecting the tumor. We use fourth order partial differential equation based technique for removing MRI noises and thereby applied segmentation using automatic seeded region growing algorithm for detecting brain tumor automatically. The contribution of this work is the use of compass operator to preserve the anatomically significant information at the edges and a new morphological technique for skull removal from the brain MRI image which leads to the process of detecting tumor accurately. The method is tested on several real brain MRI images and it shows 100% success in detecting tumor automatically.

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