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2007

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Articles 1 - 29 of 29

Full-Text Articles in Other Engineering

Laminar Flow In Mini-Fluidics Channels Assembly And Its Application In Zebra Fish Embryo Research, Radek Glaser Dec 2007

Laminar Flow In Mini-Fluidics Channels Assembly And Its Application In Zebra Fish Embryo Research, Radek Glaser

Radek Glaser

A Mini-Fluidics system was designed to facilitate the muscle growth of the Zebra Fish embryos. This experimental device is made of peristaltic pump, inflow/outflow manifolds, fluid storage tank, series of valves and flexible pipes and the main plate with six mini channels. These closed channels provide pathways for an extremely laminar flow. The Zebra Fish embryos are placed in the channels and exposed to the forces present in the fluid.


Ict And Innovation Processes In Small Italian Logistics Companies, Edward Sweeney Oct 2007

Ict And Innovation Processes In Small Italian Logistics Companies, Edward Sweeney

Conference papers

No abstract provided.


Cramer-Rao Bound Analysis Of Multi-Frame Blind Deconvolution, Alim Haji Sep 2007

Cramer-Rao Bound Analysis Of Multi-Frame Blind Deconvolution, Alim Haji

Optical Science and Engineering ETDs

This thesis explores how support constraints and multiple frames affect multi-frame blind deconvolution. Previous research in non-blind deconvolution, which seeks to estimate an object from a blurred and noisy image, characterized how the use of support constraints exploited spatial noise correlations to reduce noise in the estimate of the object. In multi-frame blind deconvolution, the blurring function is unknown and must be estimated along with the object. Applying a support constraint to both the object and the blurring functions, when using blind deconvolution, is one way to ensure a unique solution. The effects on the estimate of the object as ...


Self-Assembly Of Nanoparticles At Interfaces, Alexander Böker, Jinbo He, Thomas P. Russell, Todd S. Emrick Sep 2007

Self-Assembly Of Nanoparticles At Interfaces, Alexander Böker, Jinbo He, Thomas P. Russell, Todd S. Emrick

Todd S. Emrick

Developments in the assembly of nanoparticles at liquid–liquid interfaces are reviewed where the assemblies can be controlled by tuning the size of the nanoparticles and the chemical characteristics of the ligands. Both synthetic and biological nanoparticles are discussed. By controlling the type of ligands, uniform and Janus-type nanoparticles can be produced where, at liquid–liquid interfaces, subsequent reactions of the ligands can be used to generate crosslinked sheets of nanoparticles at the interface that have applications including novel encapsulants, filtration devices with well-defined porosities, and controlled release materials. By controlling the size and volume fraction of the nanoparticles and ...


The Concept Of Resources In Triz, Umakant Mishra Aug 2007

The Concept Of Resources In Triz, Umakant Mishra

Umakant Mishra

An ideal system should have all advantages and no harms. If the resources consumed are expensive than the output produced then the invented system becomes ridiculous. The objective should be to use least amount of resources, cheapest resources, easily available resources and resources available within the system.

Every system intends to achieve a main useful function. The use of resources should target to improve its main useful function. If certain parts of a system or certain resources lead to unwanted functions or harmful effects then that part of the system needs to be modified and those resources need to be ...


The Synthesis And Characterization Of A Novel Polysaccharide Hydrogel For Biomedical Applications Including The Treatment Of Malignant Tumors And The Prevention Of Metastatic Disease, Elizabeth Diana Barker Aug 2007

The Synthesis And Characterization Of A Novel Polysaccharide Hydrogel For Biomedical Applications Including The Treatment Of Malignant Tumors And The Prevention Of Metastatic Disease, Elizabeth Diana Barker

Masters Theses

Amygel® is an injectable biodegradable controlled release drug delivery system with adjustable release kinetics determined by varying the concentrations of the polymeric components of the material. Amygel® is a starch based biodegradable hydrogel consisting of an interpenetrating network of physically entangled amylose and amylopectin polymer chains crosslinked with d-glucaric acid. Amylose and amylopectin are the two components of naturally occurring starch. The immiscibility of the amylose and amylopectin due to differences in solubility parameter and chain size induces phase separation within the network but because the chains entangled during hydrolysis an interpenetrating network is formed. The chemically reactive carboxyl groups ...


Analysis Of A Laser Induced Plasma In High Pressure Sf6 Gas For High-Voltage, High-Current Switching, Waylon Clark Jul 2007

Analysis Of A Laser Induced Plasma In High Pressure Sf6 Gas For High-Voltage, High-Current Switching, Waylon Clark

Optical Science and Engineering ETDs

The Laser Triggered Switch Program at Sandia National Laboratories is an intensive development study to understand and optimize the laser triggered gas switch (LTGS) for the Z-Refurbishment (ZR) project. The laser triggered gas switch is the final command-triggered switch in the machine, and reliability and performance of the switch is crucial. A modified LTGS trigger section with optical viewing windows perpendicular to the laser propagation is used to analyze a laser induced plasma spark in SF6 gas in order to quantify parameters such as spark length and plasma temperature. The laser spark is created through a focusing lens by the ...


Quantum Dots Coordinated With Conjugated Organic Ligands: New Nanomaterials With Novel Photophysics, Nathan L. Hammer, Todd S. Emrick, Michael D. Barnes Jun 2007

Quantum Dots Coordinated With Conjugated Organic Ligands: New Nanomaterials With Novel Photophysics, Nathan L. Hammer, Todd S. Emrick, Michael D. Barnes

Todd S. Emrick

CdSe quantum dots functionalized with oligo-(phenylene vinylene) (OPV) ligands (CdSe-OPV nanostructures) represent a new class of composite nanomaterials with significantly modified photophysics relative to bulk blends or isolated components. Singlemolecule spectroscopy on these species have revealed novel photophysics such as enhanced energy transfer, spectral stability, and strongly modified excited state lifetimes and blinking statistics. Here, we review the role of ligands in quantum dot applications and summarize some of our recent efforts probing energy and charge transfer in hybrid CdSe-OPV composite nanostructures


R&D Management In Iran, Opportunities And Threats, Nader Ale Ebrahim, Ali Ghazizadeh, Arash Golnam, Hamid Tahbaz Tavakoli May 2007

R&D Management In Iran, Opportunities And Threats, Nader Ale Ebrahim, Ali Ghazizadeh, Arash Golnam, Hamid Tahbaz Tavakoli

Nader Ale Ebrahim

Research and Development (R&D) management in Iran has faced many barriers and obstacles, in which R&D units are considered as the basic core of the product development and innovation. Due to structural shortcomings, a great number of organizations and industries have not yet been able to position themselves in the market. There are about 1141 R&D units throughout Iran, due to the geographical decentralization of these units this paper considers and analyzes the R&D case study in one of the provinces located in the north part of Iran, and the findings can be generalized to the ...


Design And Characteristics Of A Split Hopkinson Pressure Bar Apparatus, Radek Glaser, Jesse Haines, Christopher Knight May 2007

Design And Characteristics Of A Split Hopkinson Pressure Bar Apparatus, Radek Glaser, Jesse Haines, Christopher Knight

Radek Glaser

A Split Hopkinson Pressure Bar Apparatus, also known as Kolsky Bar that is capable of conducting compressive strain rate testing in the approximate ranges from 50 to 10^4 in/in per second was designed as a part of a Senior Design Project. Generally, this device is similar to that first used by Kolsky in 1949. The design of this device is presented here in two stages: 1. Research, design and manufacturing of the Stress Generating System 2. Experimental Part – Testing of the apparatus to obtain necessary data. The present phase of the design was focused mostly on the stress ...


Outsourcing The Packaging Function, Rihaz Z. Chughatta Apr 2007

Outsourcing The Packaging Function, Rihaz Z. Chughatta

Rihaz Z Chughatta

If you are currently working in the packaging department of a major corporation in the pharmaceutical, food or consumer products industry, you have probably been exposed to some form of outsourcing, which is a global trend that has emerged over the past decade, and continues to evolve, within the packaging field.


Derivation And Application Of A Conserved Orbital Energy For The Inverted Pendulum Bipedal Walking Model, Jerry E. Pratt, Sergey V. Drakunov Apr 2007

Derivation And Application Of A Conserved Orbital Energy For The Inverted Pendulum Bipedal Walking Model, Jerry E. Pratt, Sergey V. Drakunov

Publications

We present an analysis of a point mass, point foot, planar inverted pendulum model for bipedal walking. Using this model, we derive expressions for a conserved quantity, the “Orbital Energy”, given a smooth Center of Mass trajectory. Given a closed form Center of Mass Trajectory, the equation for the Orbital Energy is a closed form expression except for an integral term, which we show to be the first moment of area under the Center of Mass path. Hence, given a Center of Mass trajectory, it is straightforward and computationally simple to compute phase portraits for the system. In fact, for ...


Derivation And Application Of A Conserved Orbital Energy For The Inverted Pendulum Bipedal Walking Model, Jerry E. Pratt, Sergey V. Drakunov Mar 2007

Derivation And Application Of A Conserved Orbital Energy For The Inverted Pendulum Bipedal Walking Model, Jerry E. Pratt, Sergey V. Drakunov

Sergey V. Drakunov

We present an analysis of a point mass, point foot, planar inverted pendulum model for bipedal walking. Using this model, we derive expressions for a conserved quantity, the “Orbital Energy”, given a smooth Center of Mass trajectory. Given a closed form Center of Mass Trajectory, the equation for the Orbital Energy is a closed form expression except for an integral term, which we show to be the first moment of area under the Center of Mass path. Hence, given a Center of Mass trajectory, it is straightforward and computationally simple to compute phase portraits for the system. In fact, for ...


Time For Real Values On Commercial Property, Lorcan Sirr Mar 2007

Time For Real Values On Commercial Property, Lorcan Sirr

Media

No abstract provided.


Sleepers Exposed: New Innovations In Rail Design, Sakdirat Kaewunruen Jan 2007

Sleepers Exposed: New Innovations In Rail Design, Sakdirat Kaewunruen

Sakdirat Kaewunruen

No one would deny that our rail network makes life much easier, and trains are widely considered to be the world's safest mode of transport. Bearing this in mind, the idea of decreasing the weight of railway sleepers, or increasing the load they carry may make passengers and associates of the rail industry sceptical as regards their own safety or the integrity of their goods and assets.


Benjamin In Paris: Weak Messianism And Memories Of The Oppressed, Jules Simon Jan 2007

Benjamin In Paris: Weak Messianism And Memories Of The Oppressed, Jules Simon

Jules Simon

No abstract provided.


Building A Network Of Mentors: A Guide For Engineering Educators, Mary Deane Sorcinelli, Jung Yun Jan 2007

Building A Network Of Mentors: A Guide For Engineering Educators, Mary Deane Sorcinelli, Jung Yun

Mary Deane Sorcinelli

No abstract provided.


Time Signature Detection By Using A Multi Resolution Audio Similarity Matrix, Mikel Gainza, Eugene Coyle Jan 2007

Time Signature Detection By Using A Multi Resolution Audio Similarity Matrix, Mikel Gainza, Eugene Coyle

Conference papers

A method that estimates the time signature of a piece of music is presented. The approach exploits the repetitative structure of most music, where the same musical bar is repeated in different parts of a piece. The method utilised a multi-resolution audio similarity matrix approach, which allows comparisons between longer audio segments (bars) by combining comparisons of shorter segments (fraction of a note). The time signature method only depends on musical structure, and does not depend on the presence of percussive instruments or strong musical accents.


Key Signature Estimation, Matt Cranitch, Derry Fitzgerald, Matthew Hart Jan 2007

Key Signature Estimation, Matt Cranitch, Derry Fitzgerald, Matthew Hart

Conference papers

The problem of automatic key signature detection has been the focus of much research in recent years. Previous methods of key estimation have focused on chromagrams and key profiling techniques. This paper presents a remarkably simple but effective method of estimating key signature from musical recordings. The algorithm introduces the "keyogram", a concept resembling the chromagram, and is aimed for use on traditional Irish music. The keyogram is a measure of the likelihood of each possible major key signature based on a masked scoring system.


Automating Ornamentation Transcription, Mikel Gainza, Eugene Coyle Jan 2007

Automating Ornamentation Transcription, Mikel Gainza, Eugene Coyle

Conference papers

A novel technique for detecting single and multi-note ornaments is presented. The system detects audio segments by utilising and onset detector based on comb filters (ODCF), which is capable of detecting very close events. In addition, a novel method to remove spurious onsets due to offset events is introduced. The system utilises musical ornamentation theory to decide whether a sequence of audio segments correspond to an ornamentation musical structure. In order to evaluate the results, a database of signals produced by different players using the three different instruments has been utilised. The results represent a step forward towards fully automating ...


Resynthesis Methods For Sound Source Separation Using Shifted Non-Negative Factorisation Models, Derry Fitzgerald, Matt Cranitch Jan 2007

Resynthesis Methods For Sound Source Separation Using Shifted Non-Negative Factorisation Models, Derry Fitzgerald, Matt Cranitch

Conference papers

Recently, techniques such as shifted 2D non-negative matrix factorisation and shifted 2D non-negative tensor factorisations have been proposed as methods for separating harmonic musical instruments from single and multi-channel mixtures. However, these methods require the use of a Constant Q transform, for which no true inverse exists. This has adverse effects on the quality of the resynthesis of the separated sources. In this paper, a number of different resynthesis methods are investigated in order to determine the best approach to resynthesis


Towards A Personal Automatic Music Playlist Generation Alogorithm: The Need For Contextual Information, Gordon Reynolds, Dan Barry, Ted Burke, Eugene Coyle Jan 2007

Towards A Personal Automatic Music Playlist Generation Alogorithm: The Need For Contextual Information, Gordon Reynolds, Dan Barry, Ted Burke, Eugene Coyle

Conference papers

Large music collections afford the listener flexibility in the form of choice, which enables the listener to choose the appropriate piece of music to enhance or complement their listening scenario on-demand. However, bundled with such a large music collection is the daunting task of manually searching through each entry in the collection to find the appropriate song required by the listener. This often leaves the listener frustrated when trying to select songs from a large music collection. In this paper, an overview of existing methods for automatically generating a playlist is discussed. This discussion outlines advantages and disadvantages associated with ...


Recruitment And Retention: The Role Of The Public Image Of Engineering, Eddie Conlon Jan 2007

Recruitment And Retention: The Role Of The Public Image Of Engineering, Eddie Conlon

Conference papers

This paper presents findings of three surveys conducted with first year students in the Faculty of Engineering in the Dublin Institute of Technology. It focuses on their motivation for studying engineering and the people who influenced the decision to do engineering. It shows there are gaps in the students’ knowledge of their programmes and also between their expectations and their experience of their course. Some proposed areas of action are identified to increase both recruitment and retention. It is argued that projecting an image of engineering as a creative activity would help in addressing recruitment and retention issues.


Enhancing Educational Programmes For Geomatics In Ireland, Frank Prendergast, William Prendergast, Avril Behan, Helen Murray Jan 2007

Enhancing Educational Programmes For Geomatics In Ireland, Frank Prendergast, William Prendergast, Avril Behan, Helen Murray

Conference Papers

The growing spatial information needs of society, the rapid development of new surveying technologies, and the global demand for appropriately qualified surveyors, have triggered a radical re-evaluation of Geomatics education in Europe. Although significant enhancements to DIT’s educational programmes have been made during the last decade, the provision of new opportunities for learners and innovative changes to existing paradigms of training and education are required. This paper addresses some of the issues confronting educators in DIT, and presents some of the strategies for their enhancement and implementation.


Reinventing A Level 7 Programme In Electrical Engineering And Greatly Improving On Student Retention, Eugene Coyle, Mike Murphy, Frank Costello, Leslie Shoemaker Jan 2007

Reinventing A Level 7 Programme In Electrical Engineering And Greatly Improving On Student Retention, Eugene Coyle, Mike Murphy, Frank Costello, Leslie Shoemaker

Books/Book chapters

Following the successful implementation over a number of decades of a three-year Diploma in Electrical and Control Engineering at Dublin Institute of Technology, the programme entered a period of extreme difficulty and uncertainty in the late nineteen ninetees and early years of the new millennium. As with many such engineering programmes, student numbers seeking to enter began to diminish. Furthermore, engagement and retention of students who had enrolled on the programme became evermore challenging, necessitating some radical moves in the formation and operation of the programme and in putting additional student support mechanisms in place. The situation hit rock bottom ...


Engineering Science As Opposed To Natural Science, Eugene Coyle, Mike Murphy, William Grimson Jan 2007

Engineering Science As Opposed To Natural Science, Eugene Coyle, Mike Murphy, William Grimson

Books/Book chapters

In exploring the epistemology of engineering science, we propose a model of engineering. This model incorporates the goals of engineering, the approach to engineering (also called the engineering method) and the role of experience in engineering. The basis for understanding the nature of engineering science will be explored, and will be contrasted with natural science. To begin, a large-scale engineering project that was successfully completed in Ireland many years ago is discussed - specifically, the development of a megalithic passage tomb as an exemplar of the engineering method in structural design, project management and aesthetics. This exemplar firmly demonstrates that engineering ...


Educating Engineers For The 21st. Century: And Why Some Elements Of History And Philosophy Should Be Incorporated Into The Curriculum, William Grimson, Mike Murphy, Eugene Coyle Jan 2007

Educating Engineers For The 21st. Century: And Why Some Elements Of History And Philosophy Should Be Incorporated Into The Curriculum, William Grimson, Mike Murphy, Eugene Coyle

Conference papers

It has been said that in some respects the Russian composer Igor Stravinsky was a magpie – borrowing styles and ideas from diverse sources for whatever musical project he was working on. The practice of engineering has this same characteristic in that it willingly takes ideas, knowledge and techniques from wherever in pursuit of completing its goal. Further, Engineering is, at least in part, in agreement with Fyodor Dostoevsky – ‘if everything on Earth were rational, nothing would happen’. Against such a background it is proposed that a framework based on both philosophy and the history of engineering, science and technology constitutes ...


Growing Research In A Traditionally Teaching-Oriented College, Mike Murphy, Michael Dyrenfurth Jan 2007

Growing Research In A Traditionally Teaching-Oriented College, Mike Murphy, Michael Dyrenfurth

Conference papers

There is increasing pressure on universities to contribute to ‘the knowledge society’ by increasing the level of research activity and output within the university. This is particularly true in the sciences, engineering and technology. This increased pressure applies equally to traditionally teaching-oriented colleges (TTOC), although not at the same scale as research-intensive universities. For the TTOC, given the primacy of teaching, this paper discusses the nexus between teaching and research and the question ‘why do research?’ is addressed within the overarching goal of embedding a research culture within the college. Initiatives to develop and grow sustainable research activity in traditionally ...


European And American Perspectives On Engineering Technology Vs Engineering Degrees, Michael Dyrenfurth, Mike Murphy, Robert Herrick, Manfred Hamann Jan 2007

European And American Perspectives On Engineering Technology Vs Engineering Degrees, Michael Dyrenfurth, Mike Murphy, Robert Herrick, Manfred Hamann

Conference papers

No abstract provided.