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On Real-Time Whole-Body Human To Humanoid Motion Transfer, Francisco-Javier Montecillo-Puente, Manish Sreenivasa, Jean-Paul Laumond 2010 LAAS-CNRS Toulouse France

On Real-Time Whole-Body Human To Humanoid Motion Transfer, Francisco-Javier Montecillo-Puente, Manish Sreenivasa, Jean-Paul Laumond

Faculty of Engineering and Information Sciences - Papers: Part B

We present a framework for online imitation of human motion by the humanoid robot HRP-2. We introduce a representation of human motion, the humanoid-Normalized model, and a Center of Mass (CoM) anticipation model to prepare the robot in case the human lifts his/her foot. Our proposed motion representation codifies operational space and geometric information. Whole body robot motion is computed using a task-based prioritized inverse kinematics solver. By setting the human motion model as the target, and giving the maintenance of robot CoM a high priority, we can achieve a large range of motion imitation. We present two scenarios ...


Microstructure Investigations Of Pt-Modified Γ′-Ni3al + Γ-Ni Coatings On Ni-Based Superalloys, Guanghui Cao, Taoping Ou, Hua Jiang, Alan M. Russell 2010 Shanghai University

Microstructure Investigations Of Pt-Modified Γ′-Ni3al + Γ-Ni Coatings On Ni-Based Superalloys, Guanghui Cao, Taoping Ou, Hua Jiang, Alan M. Russell

Materials Science and Engineering Publications

The microstructure of Pt-modified γ′-Ni3Al + γ-Ni coating on CMSX-4 single-crystal superalloy has been investigated by transmission electron microscopy (TEM). Cross-sectional TEM analyses showed the presence of precipitates in the coating. This precipitate was identified as the hexagonal topologically close-packed (TCP) μ phase with lattice parameters a = 0.473 nm and c = 2.565 nm. The energy-dispersive x-ray (EDX) spectrum of the μ phase suggested a refractory element rich compound comprising the elements Re, W, and Co. Twin domains parallel to (001) were found in the μ phase. The mechanisms of the μ phase and twinning formation were ...


Adsorbate-Enhanced Transport Of Metals On Metal Surfaces: Oxygen And Sulfur On Coinage Metals, Patricia A. Thiel, Mingmin Shen, Da-Jiang Liu, James W. Evans 2010 Iowa State University

Adsorbate-Enhanced Transport Of Metals On Metal Surfaces: Oxygen And Sulfur On Coinage Metals, Patricia A. Thiel, Mingmin Shen, Da-Jiang Liu, James W. Evans

Chemistry Publications

Coarsening (i.e., ripening) of single-atom-high, metal homoepitaxial islands provides a useful window on the mechanism and kinetics of mass transport at metal surfaces. This article focuses on this type of coarsening on the surfaces of coinage metals (Cu, Ag, Au), both clean and with an adsorbed chalcogen (O, S) present. For the clean surfaces, three aspects are summarized: (1) the balance between the two major mechanisms—Ostwald ripening (the most commonly anticipated mechanism) and Smoluchowski ripening—and how that balance depends on island size; (2) the nature of the mass transport agents, which are metal adatoms in almost all ...


A New Class Of Attacks On Time Series Data Mining, Ye Zhu, Yongjian Fu, Huirong Fu 2010 Cleveland State University

A New Class Of Attacks On Time Series Data Mining, Ye Zhu, Yongjian Fu, Huirong Fu

Electrical Engineering & Computer Science Faculty Publications

Traditional research on preserving privacy in data mining focuses on time-invariant privacy issues. With the emergence of time series data mining, traditional snapshot-based privacy issues need to be extended to be multi-dimensional with the addition of time dimension. We find current techniques to preserve privacy in data mining are not effective in preserving time-domain privacy. We present the data flow separation attack on privacy in time series data mining, which is based on blind source separation techniques from statistical signal processing. Our experiments with real data show that this attack is effective. By combining the data flow separation method and ...


Modeling Of Transient Response Of An Elastic Beam With Flexible Supports And Variable-Location Impact, Weiping Xu 2010 University of Mississippi

Modeling Of Transient Response Of An Elastic Beam With Flexible Supports And Variable-Location Impact, Weiping Xu

Electronic Theses and Dissertations

This research is prerequisite to determining structural health and estimating wear-limited life of contact/impact machinery components. Prevention, or at least early notification, of impact-induced wear is essential for preventing economic loss and enhancing personnel safety. Thus, an efficient model which is discrete in time and continuous in space was undertaken; an euler-bernoulli beam with adjustable boundary conditions and variable impact is numerically studied under a pulse loading. Structural stiffness, material modulus, contact stiffness, contact location, damping ratio, pulse duration, clearance and boundary conditions are investigated. A reference system is used as the basis for parameter studies and solution convergence ...


Using Bayesian Inference In Design Applications, Chung Yong Chan 2010 University of Mississippi

Using Bayesian Inference In Design Applications, Chung Yong Chan

Electronic Theses and Dissertations

This dissertation presents a new approach for solving engineering design problems such as the design of antenna arrays and finite impulse response (FIR) filters. In this approach, a design problem is cast as an inverse problem. The tools and methods previously developed for Bayesian inference are adapted and utilized to solve design problems. Given a desired design output, Bayesian parameter estimation and model comparison are employed to produce designs that meet the prescribed design specifications and requirements. In the Bayesian inference framework, the solution to a design problem is the posterior distribution, which is proportional to the product of the ...


Fault Testing Quantum Switching Circuits, Marek Perkowski, Jacob Biamonte 2010 Portland State University

Fault Testing Quantum Switching Circuits, Marek Perkowski, Jacob Biamonte

Electrical and Computer Engineering Faculty Publications and Presentations

Test pattern generation is an electronic design automation tool that attempts to find an input (or test) sequence that, when applied to a digital circuit, enables one to distinguish between the correct circuit behavior and the faulty behavior caused by particular faults. The effectiveness of this classical method is measured by the fault coverage achieved for the fault model and the number of generated vectors, which should be directly proportional to test application time. This work address the quantum process validation problem by considering the quantum mechanical adaptation of test pattern generation methods used to test classical circuits. We found ...


Distributed Reasoning With El++ Using Mapreduce, Frederick Maier, Raghava Mutharaju, Pascal Hitzler 2010 Wright State University - Main Campus

Distributed Reasoning With El++ Using Mapreduce, Frederick Maier, Raghava Mutharaju, Pascal Hitzler

Computer Science and Engineering Faculty Publications

It has recently been shown that the MapReduce framework for distributed computation can be used effectively for large-scale RDF Schema reasoning, computing the deductive closure of over a billion RDF triples within a reasonable time. Later work has carried this approach over to OWL Horst. In this paper, we provide a MapReduce algorithm for classifying knowledge bases in the description logic EL++, which is essentially the OWL 2 profile OWL 2 EL. The traditional EL++ classification algorithm is recast into a form compatible with MapReduce, and it is shown how the revised algorithm can be realized within the MapReduce framework ...


Distributed Turbo Product Coding Techniques Over Cooperative Communication Systems, Esam Ali Obiedat 2010 University of Mississippi

Distributed Turbo Product Coding Techniques Over Cooperative Communication Systems, Esam Ali Obiedat

Electronic Theses and Dissertations

In this dissertation, we propose a coded cooperative communications framework based on Distributed Turbo Product Code (DTPC). The system uses linear block Extended Bose-Chaudhuri-Hochquenghem (EBCH) codes as component codes. The source broadcasts the EBCH coded frames to the destination and nearby relays. Each relay constructs a product code by arranging the corrected bit sequences in rows and re-encoding them vertically using EBCH as component codes to obtain an Incremental Redundancy (IR) for source's data. Under this frame, we have investigated a number of interesting and important issues. First, to obtain, independent vertical parities from each relay in the same ...


Analysis And Design Of A Wideband Dual-Polarized Antenna Based On The Principle Of Huygens' Source, Hyukjun Seo 2010 University of Mississippi

Analysis And Design Of A Wideband Dual-Polarized Antenna Based On The Principle Of Huygens' Source, Hyukjun Seo

Electronic Theses and Dissertations

Analysis and designs of wideband dual-polarized antennas for mobile wireless communication systems are presented. The concept for Huygens' sources, which are combinations of electric and magnetic dipoles, is used. As a result a wideband unidirectional antenna, which consists of a planar dipole and a slot, is selected for the antenna element. This study aims at designing a dually polarized antenna with wideband performance. The first part of the study discusses the performance of the linearly polarized antenna element at 2.5 GHz. Several design parameters associated with the antenna element are addressed. To improve the performance and increase the bandwidth ...


On The Applications Of Deterministic Chaos For Encrypting Data On The Cloud, Jonathan Blackledge, Nikolai Ptitsyn 2010 Technological University Dublin

On The Applications Of Deterministic Chaos For Encrypting Data On The Cloud, Jonathan Blackledge, Nikolai Ptitsyn

Conference papers

Cloud computing is expected to grow considerably in the future because it has so many advantages with regard to sale and cost, change management, next generation architectures, choice and agility. However, one of the principal concerns for users of the Cloud is lack of control and above all, data security. This paper considers an approach to encrypting information before it is ‘place’ on the Cloud where each user has access to their own encryption algorithm, an algorithm that is based on a set of Iterative Function Systems that outputs a chaotic number stream, designed to produce a cryptographically secure cipher ...


E-Fraud Prevention Based On The Self-Authentication Of E-Documents, Jonathan Blackledge, Eugene Coyle 2010 Technological University Dublin

E-Fraud Prevention Based On The Self-Authentication Of E-Documents, Jonathan Blackledge, Eugene Coyle

Conference papers

We consider a method for preventing e-Fraud in which a binary image is encrypted with a floating point cipher using a convolution operation and the output quantized into a 1-bit array generating a binary image ciphertext. The output is then ‘embedded’ in a host image to hide the encrypted information. Embedding is undertaken either in the lowest 1-bit layer or multiple 1-bit layers. Decryption is accomplished by: (i) extracting the binary image from the host image; (ii) correlating the result with the original cipher. In principle, any cipher generator can be used for this purpose and the method has been ...


Authentication Of Biometric Features Using Texture Coding For Id Cards, Jonathan Blackledge, Eugene Coyle 2010 Technological University Dublin

Authentication Of Biometric Features Using Texture Coding For Id Cards, Jonathan Blackledge, Eugene Coyle

Conference papers

The use of image based information exchange has grown rapidly over the years in terms of both e-to-e image storage and transmission and in terms of maintaining paper documents in electronic form. Further, with the dramatic improvements in the quality of COTS (Commercial-Off-The-Shelf) printing and scanning devices, the ability to counterfeit electronic and printed documents has become a widespread problem. Consequently, there has been an increasing demand to develop digital watermarking techniques which can be applied to both electronic and printed images (and documents) that can be authenticated, prevent unauthorized copying of their content and, in the case of printed ...


On The Applications Of Deterministic Chaos For Encrypting Data On The Cloud, Jonathan Blackledge, N. Ptitsyn 2010 Technological University Dublin

On The Applications Of Deterministic Chaos For Encrypting Data On The Cloud, Jonathan Blackledge, N. Ptitsyn

Conference papers

Cloud computing is expected to grow considerably in the future because it has so many advantages with regard to sale and cost, change management, next generation architectures, choice and agility. However, one of the principal concerns for users of the Cloud is lack of control and above all, data security. This paper considers an approach to encrypting information before it is ‘place’ on the Cloud where each user has access to their own encryption algorithm, an algorithm that is based on a set of Iterative Function Systems that outputs a chaotic number stream, designed to produce a cryptographically secure cipher ...


Practical Simulation Application: Evaluation Of Process Control Parameters In Twisted-Pair Cables Manufacturing System, Amr Mahfouz, Said Hassan, Amr Arisha 2010 Technological University Dublin

Practical Simulation Application: Evaluation Of Process Control Parameters In Twisted-Pair Cables Manufacturing System, Amr Mahfouz, Said Hassan, Amr Arisha

Articles

Intensive competition and rapid technology development of Twisted-Pair Cables (TPC) industry have left no room for competing manufacturers to harbour system inefficiencies. TPC are used in various communication and networks hardware applications; their manufacturing facilities face many challenges including various product configurations with different equipment settings, different product flows and Work in Process (WIP) space limitations. The quest for internal efficiency and external effectiveness forces companies to align their internal settings and resources with external requirements/orders, or in different words, significant factors must be set appropriately and identified prior to manufacturing processes. Integrated definition models (IDEF0, IDEF3) in conjunction ...


Estimating The Yield Of Micro Wind Turbines In An Urban Environment: A Methodology, Keith Sunderland, Michael Conlon 2010 Technological University Dublin

Estimating The Yield Of Micro Wind Turbines In An Urban Environment: A Methodology, Keith Sunderland, Michael Conlon

Conference papers

Micro wind turbines currently have the majority share of micro (electricity) generation installations in Ireland. These technologies are being installed predominantly in rural environments, and current applications to the Distribution Services Operator (DSO) for connection of all types of micro generator stand at less than 500. Poor market dissemination of information and research findings compounded with poor options for spill payment - as well as onerous planning restrictions do not –it appears - create a platform conducive to encouraging development in this market.

This paper outlines the complexities associated with evaluating the wind resource within an urban environment and investigates the means ...


A Framework To Develop Lifelong Learning And Transferable Skills In An Engineering Programme, Gavin Duffy, Brian Bowe 2010 Technological University Dublin

A Framework To Develop Lifelong Learning And Transferable Skills In An Engineering Programme, Gavin Duffy, Brian Bowe

Conference papers

Engineering programmes have a strong reputation in the delivery of technical knowledge and skills. Graduates need equally high levels of competence in personal and professional skills to not only meet the existing requirements of employers and professional bodies but to also help them manage the inevitable changes that society is facing in an increasingly populated world. The need to move from traditional to student-centred learning is discussed in the context of engineering education. The use of group-based, problem driven learning facilitates high integration of technical and non-technical knowledge and skills and requires more engagement with the programme from today’s ...


Experiences Of Assessment Using Multiple Choice Questions On Advanced Modules Taken By Level 8 And Level 9 Engineering Students, Aidan O'Dwyer 2010 Technological University Dublin

Experiences Of Assessment Using Multiple Choice Questions On Advanced Modules Taken By Level 8 And Level 9 Engineering Students, Aidan O'Dwyer

Conference papers

This contribution evaluates the use of multiple-choice questions, in both formative and summative assessment modes, on advanced modules taken by Level 8 and Level 9 engineering students, over the past two academic years. Assessment data, and student experiences with the assessment methods, are reported and analysed.


Charge Injection And Clock Feedthrough, Jonathan Yu 2010 San Jose State University

Charge Injection And Clock Feedthrough, Jonathan Yu

Master's Theses

Turning off a transistor introduces an error voltage in switched-capacitor circuits. Circuits such as analog-to-digital converters (ADC), digital-to-analog converters (DAC), and CMOS image sensor pixels are limited in performance due to the effects known as charge injection and clock feedthrough. Charge injection occurs in a switched-capacitor circuit when the transistor turns off and disperses channel charge into the source and drain. The source, which is the sampling capacitor, experiences an error in the sampled voltage due to the incoming channel charge. Simultaneously, the coupling due to gate-source overlap capacitance also contributes to the total error voltage, which is known as ...


Lateral Vibration And Read/Write Head Servo Dynamics In Magnetic Tape Transport, M. R. Brake, Jonathan A. Wickert 2010 Carnegie Mellon University

Lateral Vibration And Read/Write Head Servo Dynamics In Magnetic Tape Transport, M. R. Brake, Jonathan A. Wickert

Mechanical Engineering Publications

Magnetic tape is a flexible mechanical structure having dimensions that areorders of magnitude different in its thickness, width, and length directions. In order to position the tape relative to the read/write head, guides constrain the tape's lateral motion, but even the modest forces that develop during guiding can cause wear and damage to the tape's edges. This paper presents antensioned axially-moving viscoelastic Euler–Bernoulli beam model used to simulate thentape's lateral dynamics, the guiding forces, and the position errornbetween the data tracks and the read/write head. Lateral vibration can be excited by disturbances in the ...


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