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Articles 1 - 30 of 200
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A Neural Network Approach To Key Frame Extraction, Rajesh Narasimha, Andreas Savakis, Raghuveer M. Rao, Ricardo De Queiroz
A Neural Network Approach To Key Frame Extraction, Rajesh Narasimha, Andreas Savakis, Raghuveer M. Rao, Ricardo De Queiroz
Articles
We present a neural network based approach to key frame extraction in the compressed domain. The proposed method is an amalgamation of both the MPEG-7 descriptors namely motion intensity descriptor and spatial activity descriptor. Shot boundary detection and block motion estimation techniques are employed prior to the extraction of the descriptors. The motion intensity (“pace of action”) is obtained using a fuzzy system that classifies the motion intensity into five categories proportional to the intensity. The spatial activity matrix determines the spatial distribution of activity (“active regions”) in a frame. A neural network is used to pick those frames as …
Isotropic Loop Quantum Cosmology With Matter. Ii. The Lorentzian Constraint, F. Hinterleitner, Seth Major
Isotropic Loop Quantum Cosmology With Matter. Ii. The Lorentzian Constraint, F. Hinterleitner, Seth Major
Articles
The Lorentzian Hamiltonian constraint is solved for isotropic loop quantum cosmology coupled to a massless scalar field. As in the Euclidean case, the discreteness of quantum geometry removes the classical singularity from the quantum Friedmann models. In spite of the absence of the classical singularity, a modified DeWitt initial condition is incompatible with a late-time smooth behavior. Further, the smooth behavior is recovered only for positive or negatives times but not both. An important feature, which is shared with the Euclidean case, is a minimal initial energy of the order of the Planck energy required for the system to evolve …
Library Support For Faculty Research, Margaret A. Leary
Library Support For Faculty Research, Margaret A. Leary
Articles
This article, aimed at faculty rather than librarians, explains the genesis, purpose, and present methods by which the University of Michigan Law Library provides research service and document delivery to the law school faculty, and describes the benefits to the entire law school community. I hope to inspire other law schools to develop similar programs.
To Catch A Thief: What To Do With Plagiarists In The Language, Literature Or Culture Classroom, Sue Norton
To Catch A Thief: What To Do With Plagiarists In The Language, Literature Or Culture Classroom, Sue Norton
Articles
This paper looks at why students in Higher Education, particularly in language, literature and culture couses, plagiarise. It considers some of the ways assessors respond.
Information Literacy Programmes And Course Curricula: The Case For Integration, Anne Ambrose, Brian Gillespie
Information Literacy Programmes And Course Curricula: The Case For Integration, Anne Ambrose, Brian Gillespie
Articles
The advent of the Internet and the profusion, complexity and haphazard nature of the information available through electronic and digital resources has highlighted the issue of information literacy in third level institutions worldwide. How do we deal with the information explosion to which we are subjected on a daily basis? In particular how do our students learn to exploit the range of resources available to advance their studies and research? Can these students become fully independent learners as proposed by the new teaching and learning methodologies without the necessary foundation skills? The authors argue, based on international standards and benchmarking …
Towards The Promotion Of Effective E-Learning Practice For Academic Staff Development In Dit, Roisin Donnelly, Frances O'Brien
Towards The Promotion Of Effective E-Learning Practice For Academic Staff Development In Dit, Roisin Donnelly, Frances O'Brien
Articles
Despite the many challenges facing educators today, as well as the array of teaching paradigms on offere, the principal goals of higher education remain the same.
Situated Learning, Distributed Cognition: Do Academics Really Need To Know?, Anne Murphy
Situated Learning, Distributed Cognition: Do Academics Really Need To Know?, Anne Murphy
Articles
The dominant approach to the study of learning throughout most of the twentieth century was to view learning as cognitive only, as if it were a process contained in the mind of the learner, decontextualised from the lived-in world
Ecotoxicological Research At Dit, Maria Davoren, Colm O'Dowd, Sharon Ni Shuilleabhain
Ecotoxicological Research At Dit, Maria Davoren, Colm O'Dowd, Sharon Ni Shuilleabhain
Articles
The term ecotoxicology first defined by Rene Truhart in 1969, essentially describes the study of the harmful effects of chemicals upon ecosystems.
Mature Students - An Examination Of Dit’S Policy And Practice, Dáire Mag Cuill
Mature Students - An Examination Of Dit’S Policy And Practice, Dáire Mag Cuill
Articles
This paper examines the current position of mature students in the Technological University Dublin, the largest third-level institute in Ireland. It also deals with the treatment of mature applicants, and the position of mature students in the Republic of Ireland in general. The focus of the paper is on equity issues, and in all discussions of equity the underpinning principle is equality of opportunity. Where places on a third-level course are limited, for example, all applicants must be treated equally and the places allocated in a ‘fair’ manner. This does not mean that one cannot discriminate in the true sense …
Live And Let Die: Regulatory Mechanisms In Fas-Mediated Apoptosis, James Curtin, Thomas Cotter
Live And Let Die: Regulatory Mechanisms In Fas-Mediated Apoptosis, James Curtin, Thomas Cotter
Articles
Activation of Fas receptor by Fas ligand causes caspase 8 activation and apoptosis in cells and is an important mechanism by which normal tissue homeostasis and function are maintained. Activation of caspase 8 is preceded by the formation of a death-inducing signalling complex (DISC), and a number of redundant mechanisms regulate DISC formation in vivo. Fas receptor is widely expressed in tissues, and dysfunction of the regulatory mechanisms in Fas receptor signalling has been reported in several diseases including autoimmune disease and cancer. This review aims to identify and discuss the various mechanisms employed by cells to alter their sensitivity …
Defects In Death-Inducing Signalling Complex Formation Prevent Jnk Activation And Fas-Mediated Apoptosis In Du 145 Prostate Carcinoma Cells, James Curtin, Thomas Cotter
Defects In Death-Inducing Signalling Complex Formation Prevent Jnk Activation And Fas-Mediated Apoptosis In Du 145 Prostate Carcinoma Cells, James Curtin, Thomas Cotter
Articles
Androgen-independent prostate carcinomas are resistant to chemotherapy and cell lines derived from androgen-independent prostate carcinomas such as DU 145 cells are highly resistant to Fas-mediated apoptosis. The incubation of DU 145 cells with anti-Fas IgM agonistic antibody of Fas receptor fails to activate JNK, a stress kinase involved in regulating apoptosis. We have previously shown that JNK activation is sufficient and necessary to promote Fas-mediated apoptosis in DU 145 cells. We investigate the mechanisms by which JNK activation and apoptosis are abrogated. HSP27 is overexpressed in DU 145 cells and has previously been reported to sequester DAXX and prevent JNK …
Dit And Student Retention, Frank Costello
How Instantaneous Is A Slaved Flash?, Andrew Davidhazy
How Instantaneous Is A Slaved Flash?, Andrew Davidhazy
Articles
Photographers use slaved electronic flashes as a matter of course but seldom question the delay between the firing of a main flash and that of the second, slaved, flash. Find out how such small time delays are determined using a Cordin rotating mirror streak camera.
A Two Phase Approach To Bayesian Network Model Selection And Comparison Between The Mdl And Dgm Scoring Heuristics, Michael Kane, Sahin Ferat, Andreas Savakis
A Two Phase Approach To Bayesian Network Model Selection And Comparison Between The Mdl And Dgm Scoring Heuristics, Michael Kane, Sahin Ferat, Andreas Savakis
Articles
This paper presents an efficient algorithm for learning a Bayesian belief network (BBN) structure from a database, as well as providing a comparison between two BBN structure fitness functions. A Bayesian belief network is a directed acyclic graph representing conditional expectations. In this paper, we propose a two-phase algorithm. The first phase uses asymptotically correct structure learning for efficient search space exploration, while the second phase uses greedy model selection for accurate search space exploration. The minimum description length (MDL) structure fitness function is also compared with the database given model probability (DGM) fitness function in the second phase. The …
Splashes, Splashes And More Splashes!, Andrew Davidhazy
Splashes, Splashes And More Splashes!, Andrew Davidhazy
Articles
How to make photographs of splashes is a topic that has interested many photographers since the advent of photography. Here are some tips and suggestions regarding a controlled approach to photographing them without wasting excessive amounts of film or time.
Mwir And Lwir Spectral Signatures Of Water And Associated Materials, Herbert J. Mitchell, Carl Salvaggio
Mwir And Lwir Spectral Signatures Of Water And Associated Materials, Herbert J. Mitchell, Carl Salvaggio
Articles
Spectral infrared emissivity measurements have been made of a variety of materials both with and without surface water. The surface water was either natural, in the form of dew or residual rainwater, or artificially introduced by manual wetting. Materials naturally high in water content were also measured. Despite the rather diverse spectral population of the underlying materials, they exhibited very similar, featureless, water-like spectra; spectrally flat with a very high magnitude across the emissive infrared region. The implication to exploitation personnel that may use emissive infrared hyperspectral image data is that in areas where condensation is likely (e.g. high humidity) …
The Importance Of Background In The Detection And Identification Of Gas Plumes Using Emissive Infrared Hyperspectral Sensing, Herbert Mitchell, Gerard P. Jellison, David P. Miller, Carl Salvaggio, Craig J. Miller
The Importance Of Background In The Detection And Identification Of Gas Plumes Using Emissive Infrared Hyperspectral Sensing, Herbert Mitchell, Gerard P. Jellison, David P. Miller, Carl Salvaggio, Craig J. Miller
Articles
Using a Fourier transform infrared field spectrometer, spectral infrared radiance measurements were made of several generated gas plumes against both a uniform sky and terrestrial background. Background temperature, spectral complexity, and physical homogeneity each influenced the success of emissive infrared spectral sensing technology in detecting and identifying the presence of a gas plume and its component constituents. As expected, high temperature contrast and uniform backgrounds provided the best conditions for detectability and diagnostic identification. This report will summarize some of SITAC’s findings concerning plume detectability, including the importance of plume cooling, plumes in emission and absorption, the effects of optical …
How To Make A "Leaf" Or "Book" Style Star Tracker Mount, Andrew Davidhazy
How To Make A "Leaf" Or "Book" Style Star Tracker Mount, Andrew Davidhazy
Articles
General description of a device designed to counterrotate the camera along an axis parallel to that of Earth to pan along with the apparent motion of the stars to prevent "trailing" or blurres images of stars over extended time exposures.
Transition Probabilities In Kr Ii And Kr Iii Spectra, Stevan Djenize, Vladimir Milosavljevic, Milan S. Dimitrijevic
Transition Probabilities In Kr Ii And Kr Iii Spectra, Stevan Djenize, Vladimir Milosavljevic, Milan S. Dimitrijevic
Articles
On the basis of the relative line intensity ratio (RLIR) method, transition probability values of the spontaneous emission (Einstein's A values) of 14 transitions in the singly (Kr II) and 7 transitions in doubly (Kr III) ionized krypton spectra have been obtained relatively to the reference A values related to the 435.548 nm Kr II and 324.569 nm Kr III, the most intensive transitions in the Kr II and Kr III spectra. Our Kr III transition probability values are the first data obtained experimentally using the RLIR method. A linear, low–pressure, pulsed arc operated in krypton discharge was used as …
Growth Of Well-Defined Zno Microparticles By Hydroxide Ion, Ruth Mcbride, Declan Mccormack, John Kelly
Growth Of Well-Defined Zno Microparticles By Hydroxide Ion, Ruth Mcbride, Declan Mccormack, John Kelly
Articles
The morphology of the microcrystalline zinc oxide formed by reaction of zinc salts with sodium hydroxide depends critically on the reaction conditions. To understand this, the nature of the solid product has been probed by scanning electron microcopy (SEM) and X-ray diffraction (XRD) and the concentration of zinc remaining in the solution has been determined at regular intervals throughout the reaction. Two general preparative procedures have been followed. The first, which involves simply heating an aqueous solution containing Zn(NO3)2 (0.025 M) and sodium hydroxide (0.375 M) to 101 uC and maintaining it at that temperature for periods of up to …
Reflected Ultraviolet Digital Photography With Improvised Uv Image Converter, Andrew Davidhazy
Reflected Ultraviolet Digital Photography With Improvised Uv Image Converter, Andrew Davidhazy
Articles
Description of a quick-'n-dirty improvisation to make images made up of ultraviolet reflected or transmited by subjects using a standard digital camera equipped with a CCD sensor that is notoriously insensitive in the ultraviolet. The basis for the approach is the use of a fluorescing image converter.
Minimal K-Rankings And The A-Rank Number Of A Path, Victor Kostyuk, Darren Narayan, Victoria Shults
Minimal K-Rankings And The A-Rank Number Of A Path, Victor Kostyuk, Darren Narayan, Victoria Shults
Articles
Given a graph G, a function f: V(G) -> {1, 2, ..., k} is a k-ranking of G if f(u) = f(v) implies every u - v path contains a vertex w such that f(w) > f(u). A k-ranking is minimal if the reduction of any label greater than 1 violates the described ranking property. The a-rank number of G, denoted u,(G) equals the largest k such that G has a minimal k-ranking. We establish new results involving minimal rankings of paths and in particular we determine u(Pn), a problem suggested by Laskar and Pillone in 2000. We show u(Pn) = …
Identification And Use Of Actinomycetes For Enhanced Nodulation Of Soybean Co-Inoculated With Bradyrhizobium Japonicum, A. K. Gregor, Brian Klubek, E. C. Versa
Identification And Use Of Actinomycetes For Enhanced Nodulation Of Soybean Co-Inoculated With Bradyrhizobium Japonicum, A. K. Gregor, Brian Klubek, E. C. Versa
Articles
The utilization of actinomycetes as potential soybean (Glycine max (L.)) co-inoculants was evaluated. Soil samples from Carbondale and Belleville, Ill., were used to inoculate pre-germinated soybean plants to determine antibiotic sensitivity in the native Bradyrhizobium japonicum population. Sensitivity was in the order kanamycin > tetracycline > oxytetracycline > rifampicin > neomycin. Antagonism by five actinomycete cultures toward seven test strains of B. japonicum was also assessed. The ranking average inhibition (across all seven B. japonicum strains) by these actino mycetes was Streptomyces kanamyceticus = Streptomyces coeruleoprunus > Streptomyces rimosus > Streptomyces sp. > Amy colatopsis mediterranei. Ten antibiotic combinations were used to isolate antibiotic-resistant mutants of B. …
Astrophysical Plasma Diagnostics Through Analysis Of Ar Iine Shape Characteristics, Vladimir Milosavljevic, Stevan Djenize
Astrophysical Plasma Diagnostics Through Analysis Of Ar Iine Shape Characteristics, Vladimir Milosavljevic, Stevan Djenize
Articles
On the basis of five accurately recorded neutral argon ( ) line shapes (in the 4s-5p transition) we have recovered the basic plasma parameters i.e. electron temperature ( T) and electron density ( N) using our new line deconvolution procedure in the case of three different plasmas created in a linear, low-pressure, pulsed arc discharge. The mentioned plasma parameters have also been measured using independent experimental diagnostic techniques. An excellent agreement has been found among the two sets of obtained parameters. This recommends our deconvolution procedure for plasma diagnostic purposes, especially in astrophysics where direct measurements of the …
Experimental And Calculated Stark Widths Within The Kr I Spectrum, Vladimir Milosavljevic, Stevan Djenize, Milan S. Dimitrijevic
Experimental And Calculated Stark Widths Within The Kr I Spectrum, Vladimir Milosavljevic, Stevan Djenize, Milan S. Dimitrijevic
Articles
On the basis of the precisely recorded 20 neutral krypton (Kr I) line shapes (in the 5s−5p and 5s−6p transitions), we have obtained the basic plasma parameters, i.e., electron temperature (T) and electron density (N) using our line deconvolution procedure in a plasma created in a linear, low-pressure, pulsed arc discharge operated in krypton. The mentioned plasma parameters have also been measured using independent experimental diagnostics techniques. Agreement has been found among the two sets of the obtained parameters. This recommends our deconvolution procedure for plasma diagnostical purposes, especially in astrophysics where direct measurements of the …
Autonomous Field-Deployable Wildland Fire Sensors, Robert Kremens, Jason Faulring, A. Gallagher, A. Seema, Anthony Vodacek
Autonomous Field-Deployable Wildland Fire Sensors, Robert Kremens, Jason Faulring, A. Gallagher, A. Seema, Anthony Vodacek
Articles
An Autonomous Fire Detector (AFD) is a miniature electronic package combining position location capability [using the Global Positioning System (GPS)], communications (packet or voice-synthesized radio), and fire detection capability (thermal, gas, smoke detector) into an inexpensive, deployable package. The AFD can report fire-related parameters, like temperature, carbon monoxide concentration, or smoke levels via a radio link to firefighters located on the ground. These systems are designed to be inserted into the fire by spotter planes at a fire site or positioned by firefighters already on the ground. AFDs can also be used as early warning devices near critical assets in …
Real-Time Video Annotation Using Mpeg-7 Motion Activity Descriptors, Andreas Savakis, Pawel Sniatala, Radoslaw Rudnicki
Real-Time Video Annotation Using Mpeg-7 Motion Activity Descriptors, Andreas Savakis, Pawel Sniatala, Radoslaw Rudnicki
Articles
The MPEG-7 standard provides a framework of standardized tools that can be used to describe and efficiently manage multimedia content. Visual descriptors include color, texture, shape and motion. In this paper, we address the hardware implementation of MPEG-7 motion descriptors using Handel-C. In particular, descriptors for motion intensity and spatial distribution of motion activity are generated and implemented.
The Scholarship Horizons In Engineering Technology: Choosing The Best Path, Abi Aghayere, Wiley Mckinzie, Warren Hill, David Dvorak, Dale Palmgren, Anthony Brizendine
The Scholarship Horizons In Engineering Technology: Choosing The Best Path, Abi Aghayere, Wiley Mckinzie, Warren Hill, David Dvorak, Dale Palmgren, Anthony Brizendine
Articles
The issue of scholarship in Engineering Technology (ET) is becoming an important topic of discussion within the ET community due to the evolving missions of many institutions that host Engineering Technology programs. Many of these institutions now require some form of documented scholarship from their ET faculty for promotion and tenure purposes, and it is incumbent upon the ET community to support these faculty by defining not only the meaning of scholarship in ET, but also the yardstick by which such scholarship will be assessed. This issue is pertinent to ET because our programs are traditionally of an applied nature …
Building A Home For The Laws Of The World: Part 1: Bates, Cook, And Coffey, Margaret A. Leary
Building A Home For The Laws Of The World: Part 1: Bates, Cook, And Coffey, Margaret A. Leary
Articles
The following feature is an edited version of "Building a Foreign Law Collection at the University of Michigan Law Library, 1910-1960."© Margaret A. Leary, 2002, which originally appeared at 94 Law Library Journal 395-425 (2002), and appears here with permission of the author. The first part of the article appears here; the conclusion will appear in the next issue of Law Quadrangle Notes.
Two-Dimensional Packing In Prolate Granular Materials, Kevin Stokely, A. Diacou, Scott Franklin
Two-Dimensional Packing In Prolate Granular Materials, Kevin Stokely, A. Diacou, Scott Franklin
Articles
We investigate the two-dimensional packing of extremely prolate (aspect ratio L/D>10) granular materials, comparing experiments with Monte-Carlo simulations. In experimental piles of particles with aspect ratio 12 we find the average packing fraction to be 0.68 +/- 0.03. Both experimental and simulated piles contain a large number of horizontal particles, and particle alignment is quantified by an orientational order correlation function. In both simulation and experiment the correlation between particle orientation decays after a distance of two particle lengths. It is possible to identify voids in the pile with sizes ranging over two orders of magnitude. The experimental void …