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Unmanned vehicle-aided automated meter reading

Unmanned vehicle-aided automated meter reading

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International Conference on Broadband and Biomedical Communications (IB2Com)

作者： Gurkan Tuna V. Cagri Gungor Kayhan Gulez Department of Computer Programming Trakya University Edirne Turkey Faculty of Engineering Department of Computer Engineering Bahçeşehir University Istanbul Turkey Faculty of Engineering Bahçegehir University Istanbul Turkey Electrical-Electronics Eng. Faculty Yildiz Technical University Istanbul Turkey

This paper presents a novel approach of using unmanned vehicles for Automated Meter Reading (AMR) applications in rural areas where there are a few consumers scattered around a wide area. The proposed system does not require a fixed network infrastructure to transfer data to a central database, since data collection is carried out by unmanned vehicles. Compared to traditional meter reading systems, the use of unmanned vehicles for AMR brings several advantages, such as low cost operation, flexibility, and online system management. However, the realization of these potential gains directly depends on reliable communication capabilities of the deployed system and successful navigation of unmanned vehicles. Overall, in this paper, the design principles and challenges of using unmanned vehicles for AMR applications in rural areas have been presented. Also, the communication architecture of the proposed system has been explained and comparative simulation studies have been performed in terms of energy efficiency and navigation accuracy.

关键词： Vehicles Navigation Wireless sensor networks Simultaneous localization and mapping Accuracy Wireless communication

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Extraction of human mandible bones from multi-slice computed tomographic data

Extraction of human mandible bones from multi-slice computed...

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Middle East Conference on Biomedical engineering (MECBME)

作者： Tamer M. Nassef Nahed H. Solouma Mohamed Alkhodary Mona K. Marei Yasser M. Kadah Computer and Programming Engineering Department Misr University for Science and Technology Six of October City Egypt Tissue Engineering Laboratory Alexandria University Alexandria Egypt National Institute of Laser Science Cairo University Giza Egypt Biomedical Engineering Department Cairo University Giza Egypt

A new approach for segmenting different anatomical regions in dental Computed Tomography (CT) studies is presented in this paper. It is expected that the proposed approach will help automate different tissues regions by providing initial boundary points for deformable models or seed points for split and merge segmentation algorithms. Preliminary results obtained for dental CT studies of dentate and edentulous human-mandible are presented with finite element models divided by tetrahedral elements, which built based on actual CT data combined with triangulation equations. Identification of different anatomical regions set for mandible cortical and cancellous bones by generated 3D models by marching cubes technique.

关键词： Finite element methods Computed tomography Implants Image segmentation Three dimensional displays Dentistry Solid modeling

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computer assisted determination of mandibular cystic lesion volume from computed tomographic data

Computer assisted determination of mandibular cystic lesion ...

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Middle East Conference on Biomedical engineering (MECBME)

作者： Tamer M. Nassef Reham M. Fliefel Mona K. Marei Nahed H. Solouma Yasser M. Kadah Computer and Programming Engineering Department Misr University for Science and Technology Six of October City Egypt Tissue Engineering Lab Alexandria University Alexandria Egypt National Institute of Laser Science Cairo University Giza Egypt Biomedical Engineering Department Cairo University Giza Egypt

In this paper, a new approach for computing different anatomical regions in dental Computed Tomography (CT) is presented. The approach consists of two steps. First, a HU threshold window sets to separate between different regions upon their gray-level values; second, a set of objects are generated and texture descriptors are calculated for selected windows from the image data sample. Finally, identification of different anatomical regions set for mandible bones to determine the cystic lesion volume based on numerical methods. Preliminary results obtained for dental CT of female patient aged 14 years old complaining of bilateral swelling in her mandible are presented.

关键词： Bones Lesions Computed tomography Three dimensional displays Pixel Surgery Solid modeling

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Toward harnessing DOACROSS parallelism for multi-GPGPUs

Toward harnessing DOACROSS parallelism for multi-GPGPUs

引用

International Conference on Parallel Processing

作者： Di, Peng Wan, Qing Zhang, Xuemeng Wu, Hui Xue, Jingling Programming Languages and Compilers Group School of Computer Science and Engineering UNSW Sydney NSW 2052 Australia

ISBN: (纸本)9780769541563

To exploit the full potential of GPGPUs for generalpurpose computing, DOACR parallelism abundant in scientific and engineering applications must be harnessed. However, the presence of cross-iteration data dependences in DOACR loops poses an obstacle to execute their computations concurrently using a massive number of fine-grained threads. This work focuses on iterative PDE solvers rich in DOACR parallelism to identify optimization principles and strategies that allow their efficient mapping to GPGPUs. Our main finding is that certain DOACR loops can be accelerated further on GPGPUs if they are algorithmically restructured (by a domain expert) to be more amendable to GPGPU parallelization, judiciously optimized (by the compiler), and carefully tuned by a performance-tuning tool. We substantiate this finding with a case study by presenting a new parallel SSOR method that admits more efficient data-parallel SIMD execution than red-black SOR on GPGPUs. Our solution is obtained non-conventionally, by starting from a K-layer SSOR method and then parallelizing it by applying a non-dependencepreserving scheme consisting of a new domain decomposition technique followed by a generalized loop tiling. Despite its relatively slower convergence, our new method outperforms red-black SOR by making a better balance between data reuse and parallelism and by trading off convergence rate for SIMD parallelism. Our experimental results highlight the importance of synergy between domain experts, compiler optimizations and performance tuning in maximizing the performance of applications, particularly PDE-based DOACR loops, on GPGPUs. © 2010 IEEE.

关键词： Iterative methods

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Boolean differential calculus

Boolean differential calculus

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作者： Steinbach, Bernd Posthoff, Christian Department of Computer Science Software Engineering and Programming Freiberg University of Mining and Technology Germany

ISBN: (纸本)9781608451821

Boolean Differential Calculus (BDC) extends Boolean *** Boolean algebra is focused on values of logic functions,BDC allows the evaluation of changes of the function values. Such changes can be investigated between certain pairs of function values as well as regarding whole subspaces. Due to the same basic data structures, BDC can be applied to any task described by logic functions and equations together with the Boolean *** used is BDC in analysis, synthesis, and testing of digital circuits. In this chapter, we introduce basic definitions of BDC together with some typical applications.

关键词： Differentiation (calculus)

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On the algebraic expression of the AES S-box like S-boxes

On the algebraic expression of the AES S-box like S-boxes

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2nd International Conference on 'Networked Digital Technologies', NDT 2010

作者： Sakalli, M. Tolga Aslan, Bora Buluş, Ercan Mesut, Andac Şahin Büyüksaraçoǧlu, Fatma Karaahmetoǧlu, Osman Trakya University Computer Engineering Dept. Edirne Turkey Kirklareli University Computer Programming Dept. Lüleburgaz-Kirklareli Turkey Namik Kemal University Computer Engineering Dept. Çorlu-Tekirdaǧ Turkey

ISBN: (纸本)3642142915

In the literature, there are several proposed block ciphers like AES, Square, Shark and Hierocrypt which use S-boxes that are based on inversion mapping over a finite field. Because of the simple algebraic structure of S-boxes generated in this way, these ciphers usually use a bitwise affine transformation after the inversion mapping. In some ciphers like Camellia, an additional affine transformation is used before the input of the S-box as well. In this paper, we study algebraic expressions of S-boxes based on power mappings with the aid of finite field theory and show that the number of terms in the algebraic expression of an S-box based on power mappings changes according to the place an affine transformation is added. Moreover, a new method is presented to resolve the algebraic expression of the AES S-box like S-boxes according to the given three probable cases. © 2010 Springer-Verlag.

关键词： Mapping

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Experimental reliability analysis of multi-UAV simulation with TMO-based distributed architecture and global time synchronization

Experimental reliability analysis of multi-UAV simulation wi...

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2010 13th IEEE International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing Workshops, ISORC Workshops 2010

作者： Song, Seung-Hwa Kim, Doo-Hyun Chang, Chun-Hyon Embedded Computing Lab School of Internet and Multimedia Engineering Konkuk University Seoul Korea Republic of Programming Language Lab School of Computer Engineering Konkuk University Seoul Korea Republic of

ISBN: (纸本)9780769540382

In developing multi-UAV(Unmanned Aerial Vehicle) system, a simulation environment is essential to verify the functionalities of the whole system with higher productivity and reduced risks of accidents. Simulations of multi-UAV systems are usually accomplished by using distributed systems where multiple standalone simulators are connected via a network. Thus, in order to achieve an improved reality in such distributed simulation environments, the whole multi-UAV simulator should be guaranteed real-time and synchronized behaviors among the connected systems. In this paper, we discuss about the necessity of two important real-time features, i.e., the periodicity of computations and the clock synchronization among standalone simulators. We also propose an architecture based on TMO(Time-triggered and Message-triggered Object) model as a multi-UAV simulation platform with our preliminary experimental results showing its potential feasibilities. © 2010 IEEE.

关键词： Simulators

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A lock-free cache-friendly software queue buffer for decoupled software pipelining

A lock-free cache-friendly software queue buffer for decoupl...

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2010 International computer Symposium, ICS 2010

作者： Chen, Wen Ren Yang, Wuu Hsu, Wei Chung Programming Language and System Lab Institute of Computer Science and Engineering National Chiao Tung University Hsinchu 30013 Taiwan System Lab. Institute of Computer Science and Engineering National Chiao Tung University Hsinchu 30013 Taiwan

ISBN: (纸本)9781424476404

Multicore has become a trend on server and client computers in recent years. Parallelization is one way to fully utilize the computing power provided by multicore architectures. Most applications of interest have complex data and control dependency, which make traditional parallelization techniques, such as DOALL and DOACROSS, inapplicable. Decoupled Software Pipelining (DSWP), a new parallelization technique, shows its potential on parallelizing general applications. However, its success relies on fast inter-core synchronization and communication. On commodity multicore platforms, the performance of current DSWP disappoints us since the overhead involving lock-based, cache dishonored software approach offsets the benefit from DSWP. We present a lock-free, cache-friendly software queue designed for DSWP. A lock-free, cache-friendly solution need take two different aspects of memory system, memory coherence and memory consistency, into *** show how inattention to these two aspects leads to incorrect or inefficient solutions. We also present our approach to providing a correct and efficient solution with detailed explanation. Due to the nondeterministic nature of parallel programs, traditional testing techniques cannot be used to fully verify the correctness of the implementation. We also discuss the correctness of our implementation both in informal and formal ways. ©2010 IEEE.

关键词： Locks (fasteners)

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Scratchpad memory allocation for data aggregates via interval coloring in superperfect graphs

Scratchpad memory allocation for data aggregates via interva...

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作者： Li, Lian Xue, Jingling Knoop, Jens University of New South Wales School of Computer Science and Engineering Programming Languages and Compilers Group Sydney NSW 2052 Australia Technische Universität Wien Institut für Computersprachen Argentinierstraße 8 1040 Wien Austria

Existing methods place data or code in scratchpad memory (SPM) by relying on heuristics or resorting to integer programming or mapping it to a graph-coloring problem. In this article, the SPM allocation problem for arrays is formulated as an interval coloring problem. The key observation is that in many embedded C programs, two arrays can bemodeled such that either their live ranges do not interfere or one contains the other (with good accuracy). As a result, array interference graphs often form a special class of superperfect graphs (known as comparability graphs), and their optimal interval colorings become efficiently solvable. This insight has led to the development of an SPM allocation algorithm that places arrays in an interference graph in SPM by examining its maximal cliques. If the SPM is no smaller than the clique number of an interference graph, then all arrays in the graph can be placed in SPM optimally. Otherwise, we rely on containment-motivated heuristics to split or spill array live ranges until the resulting graph is optimally colorable. We have implemented our algorithm in SUIF/machSUIF and evaluated it using a set of embedded C benchmarks from MediaBench and MiBench. Compared to a graph-coloring algorithm and an optimal ILP algorithm (when it runs to completion), our algorithm achieves close-to-optimal results and is superior to graph coloring for the benchmarks tested. © 2010 ACM.

关键词： Integer programming

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An automated bottle filling and capping project for freshman engineering students

An automated bottle filling and capping project for freshman...

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2010 ASEE Annual Conference and Exposition

作者： Meah, Kala Garrison, Timothy Kearns, James Link, Gregory Garrison, Laura Blanding, Wayne Celik, Emine Kuchnicki, Stephen Dawson, Jennifer McFarland, Barry Department of Physical Science York College of Pennsylvania United States Mechanical Engineering Program York College of Pennsylvania United States Department of Electrical and Computer Engineering York College of Pennsylvania United States Department of Thermal Sciences Freshmen Design Courses and Computer Programming York College of Pennsylvania United States Department of Electrical Engineering York College of Pennsylvania United States York College of Pennsylvania United States Department of Mechanical Engineering York College of Pennsylvania United States

All freshman engineering students at York College participate in a spring semester design challenge as part of a year-long, two-course introduction to engineering. This paper describes the course organization, the project goals, and project itself and how it supports the broader engineering curriculum goals of engaging freshman engineering students in a design project, exposing them in an interesting way to the breath of engineering, and motivating them in their engineering studies. The students work in small teams and have roughly 12 weeks to design an automated electromechanical system that first transports three empty Snapple bottles, three tennis balls, and 36 oz. of water to a 2/x3/ operational zone. The machine must fill each bottle with 12 oz. of water, cap each bottle by covering the top with a tennis ball, and then deliver the capped and filled bottles to an area outside of the operational zone. The bottle-filling project serves as the second of two interdisciplinary engineering design experiences during the freshman year. It introduces aspects of computer, electrical, and mechanical engineering, including the following five primary knowledge areas: (i) machining and fabrication;(ii) electronic circuit prototyping and programming;(iii) sensor and actuator applications;(iv) mechanical design;(v) project planning;and (vi) presentation skills. A project demonstration at the end of the semester determines the relative effectiveness of each machine based upon a number of quantitative factors, including the total time required to complete the overall process, the volume of water in each bottle, the number of bottles successfully capped, the amount of water spilled, and approximate manufacturing cost. Some qualitative factors considered are simplicity, creativity, and aesthetics. Student interest in this substantial hands-on experience, as measured by surveys and exhibited by attendance, enthusiasm, productivity, and success, appears to be high through the three y

关键词： Bottles

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