Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Articles

Discipline
Institution
Keyword
Publication Year
Publication Type
File Type

Articles 13651 - 13680 of 20106

Full-Text Articles in Entire DC Network

Dedicated To The Memory Of Lee E. Teiteitelbaum, Carl E. Schneider Nov 2004

Dedicated To The Memory Of Lee E. Teiteitelbaum, Carl E. Schneider

Articles

When I first met Lee Teitelbaum at a conference two decades ago, I was a novice and he a distinguished scholar. Because my colleagues admired him, I rang his room at the hotel and asked him to join me for dinner. He sweetly agreed. When he opened his door to my knock, I realized that he set standards I could never match-sartorial standards. Who was this king of glory? 1 stood there in my Oshkosh khakis and running shoes, agape and abashed. Despite this unpropitious start, our friendship ripened, and soon I realized Lee set standards of a finer and …


High-Resolution Slant-Angle Scene Generation And Validation Of Concealed Targets In Dirsig, Kris E. Barcomb, John Schott, Scott D. Brown, Timothy J. Hattenberger Oct 2004

High-Resolution Slant-Angle Scene Generation And Validation Of Concealed Targets In Dirsig, Kris E. Barcomb, John Schott, Scott D. Brown, Timothy J. Hattenberger

Articles

Traditionally, synthetic imagery has been constructed to simulate images captured with low resolution, nadirviewing sensors. Advances in sensor design have driven a need to simulate scenes not only at higher resolutions but also from oblique view angles. The primary efforts of this research include: real image capture, scene construction and modeling, and validation of the synthetic imagery in the reflective portion of the spectrum. High resolution imagery was collected of an area named MicroScene at the Rochester Institute of Technology using the Chester F. Carlson Center for Imaging Science’s MISI and WASP sensors using an oblique view angle. Three Humvees, …


Surface And Buried Landmine Scene Generation And Validation Using The Digital Imaging And Remote Sensing Image Generation Model, Erin D. Peterson, Scott D. Brown, Timothy J. Hattenberger, John R. Schott Oct 2004

Surface And Buried Landmine Scene Generation And Validation Using The Digital Imaging And Remote Sensing Image Generation Model, Erin D. Peterson, Scott D. Brown, Timothy J. Hattenberger, John R. Schott

Articles

Detection and neutralization of surface-laid and buried landmines has been a slow and dangerous endeavor for military forces and humanitarian organizations throughout the world. In an effort to make the process faster and safer, scientists have begun to exploit the ever-evolving passive electro-optical realm, both from a broadband perspective and a multi or hyperspectral perspective. Carried with this exploitation is the development of mine detection algorithms that take advantage of spectral features exhibited by mine targets, only available in a multi or hyperspectral data set. Difficulty in algorithm development arises from a lack of robust data, which is needed to …


Preaching The Gospel In A De-Christianised Parish : Lessons From The ''Diary Of A Country Priest'', Eamon Maher Oct 2004

Preaching The Gospel In A De-Christianised Parish : Lessons From The ''Diary Of A Country Priest'', Eamon Maher

Articles

Material reproduced by kind permission of Reality


Challenging Ethnic Citizenship: German And Israeli Perspectives On Citizenship, David Abraham Oct 2004

Challenging Ethnic Citizenship: German And Israeli Perspectives On Citizenship, David Abraham

Articles

No abstract provided.


Gaming Delaware, William Wilson Bratton Oct 2004

Gaming Delaware, William Wilson Bratton

Articles

No abstract provided.


Duress Is Not A Justification, Kyron J. Huigens Oct 2004

Duress Is Not A Justification, Kyron J. Huigens

Articles

No abstract provided.


Integrating Remorse And Apology Into Criminal Procedure, Stephanos Bibas, Richard A. Bierschbach Oct 2004

Integrating Remorse And Apology Into Criminal Procedure, Stephanos Bibas, Richard A. Bierschbach

Articles

The article argues that the criminal justice system's current focus on punishment and procedural efficiency overlooks the transformative potential of remorse and apology in repairing moral and relational harm caused by crime. It advocates for a relational approach that integrates mechanisms like restorative justice and victim-offender mediation to foster healing, reconciliation, and reintegration of offenders into society.


Past And Present Proposed Amendments To The United States Constitution Regarding Marriage, Edward D. Stein Oct 2004

Past And Present Proposed Amendments To The United States Constitution Regarding Marriage, Edward D. Stein

Articles

Proposals to amend the Constitution to prohibit same-sex marriage were recently actively discussed and voted on in the U.S. Congress. This Article situates arguments for these proposals within the history of attempts to amend the Constitution related to marriage by providing the first detailed, synthetic analysis of such previously proposed amendments. This examination reveals 133 previously proposed amendments to the Constitution relating to marriage, consisting primarily of proposals to prohibit interracial marriage, proposals to prohibit polygamy, and proposals to empower Congress to make uniform laws concerning marriage and divorce. By tracing the arguments made in support of these amendments, this …


Structural Characterisation Of A Sol-Gel Copolymer Synthesised From Aliphatic And Aromatic Alkoxysilanes Using 29si-Nmr Spectroscopy, Mohamed Oubaha, M. Dubois, B. Murphy, P. Etienne Sep 2004

Structural Characterisation Of A Sol-Gel Copolymer Synthesised From Aliphatic And Aromatic Alkoxysilanes Using 29si-Nmr Spectroscopy, Mohamed Oubaha, M. Dubois, B. Murphy, P. Etienne

Articles

A hybrid organic-inorganic material was prepared from the hydrolytic co-condensation of 3- trimethoxysilylpropylmethacrylate (MAPTMS) and diphenyldiethoxysilane (DPHDES). The synthesis was performed in three steps: (1) MAPTMS pre-hydrolysis, (2) addition of DPHDES, and (3) further hydrolysis of the obtained mixture. 29 Si nuclear magnetic resonance spectroscopy was used to characterise the structural evolution of the mineral network during the synthesis. It revealed the catalytic effect of DPHDES on the condensation reaction of silanol groups, initially observed for pre-hydrolysed MAPTMS. In addition, it was clearly demonstrated that the formation of the highest condensed species of the aromatic oligomers (D2 species) occurred …


A Novel Brdf Measurement Technique With Spatial Resolution-Dependent Spectral Variance, James Ii Shell, Carl Salvaggio, John Schott Sep 2004

A Novel Brdf Measurement Technique With Spatial Resolution-Dependent Spectral Variance, James Ii Shell, Carl Salvaggio, John Schott

Articles

Overhead spectral imaging has enabled a variety of quantitative remote sensing techniques. However, the derived surface reflectance upon which these techniques rely is generally directional and dependent upon the incident solar and receiving detector angles. The bidirectional reflectance distribution function (BRDF) is becoming increasingly important with the development of non-nadir, multi-angle systems. A BRDF measurement approach in the visible to near infrared is described which is suitable for field use. An imaging technique measures BRDF but also enables the generation of the BRDF variability, or the bidirectional reflectance variance function (BRVF). From the measurements, the BRVF and spectral correlation statistics …


Stark Width And Shift Of The Neutral Argon 425.9 Nm Spectral Line, Vladimir Milosavljevic, Vida Zigman, Stevan Djenize Sep 2004

Stark Width And Shift Of The Neutral Argon 425.9 Nm Spectral Line, Vladimir Milosavljevic, Vida Zigman, Stevan Djenize

Articles

The Stark parameters, the width (W) and the shift (d), of the neutral argon (Ar I) 425.9 nm spectral line have been studied in a linear, low-pressure, optically thin pulsed arc discharge. The line shapes are measured in three different plasmas at about 16,000 K electron temperature (T) and about 7.0×1022 m−3 electron density (N). The separate electron and ion contributions to the total Stark width (Wt), i.e. We and Wi, as well as to the total Stark shift (dt), i.e. …


Image Quality Analysis Of A Spectra-Radiometric Sparse-Aperture Model, Noah R. Block, Robert Introne, John R. Schott Sep 2004

Image Quality Analysis Of A Spectra-Radiometric Sparse-Aperture Model, Noah R. Block, Robert Introne, John R. Schott

Articles

Sparse aperture (SA) telescopes represent a promising technology to increase the effective diameter of an optical system while reducing overall weight and stowable size. Although conceptually explored in the literature for decades, the technology has only recently matured to the point of being reasonably considered for certain applications. In general, a sparse aperture system consists of an array of sub-apertures that are phased to synthesize a larger effective aperture. The models used to date to create predictions of sparse aperture imagery typically make use of a “gray world” assumption, where the input is a resampled black and white panchromatic image. …


Time Restrictions In Natural Resource Management: A Dynamic And Stochastic Analysis, Amitrajeet A. Batabyal, Hamid Beladi Sep 2004

Time Restrictions In Natural Resource Management: A Dynamic And Stochastic Analysis, Amitrajeet A. Batabyal, Hamid Beladi

Articles

This paper provides a theoretical analysis of time restrictions in the context of natural resource management in North America. The economic inefficiencies arising from the use of time restrictions to protect natural resources have been well documented by researchers. We first show that in the presence of uncertainty about the evolution of the resource stock, time restrictions can lead to the collapse of the resource that is sought to be protected. Given this finding, in the second part of the paper, we discuss an approach to natural resource management under uncertainty in which time restrictions are used to maximize the …


A Glimpse At Death And The Transcendent In Gerard Manley Hopkins And Jean Sulivan, Eamon Maher Sep 2004

A Glimpse At Death And The Transcendent In Gerard Manley Hopkins And Jean Sulivan, Eamon Maher

Articles

No abstract provided.


Producing Knowledge Through Architecture, Noel Brady Sep 2004

Producing Knowledge Through Architecture, Noel Brady

Articles

Interview with Foreign Office Architects.


On The Dressing Method For The Generalised Zakharov-Shabat System, Rossen Ivanov Aug 2004

On The Dressing Method For The Generalised Zakharov-Shabat System, Rossen Ivanov

Articles

The dressing procedure for the Generalised Zakharov-Shabat system is well known for systems, related to sl(N) algebras. We extend the method, constructing explicitly the dressing factors for some systems, related to orthogonal and symplectic Lie algebras. We consider ’dressed’ fundamental analytical solutions with simple poles at the prescribed eigenvalue points and obtain the corresponding Lax potentials, representing the soliton solutions for some important nonlinear evolution equations.


Fuzzy Control With Random Delays Using Invariant Cones And Its Application To Control Of Energy Processes In Microelectromechanical Motion Devices, A. Sinha, Sergey Lyshevski Aug 2004

Fuzzy Control With Random Delays Using Invariant Cones And Its Application To Control Of Energy Processes In Microelectromechanical Motion Devices, A. Sinha, Sergey Lyshevski

Articles

In this paper, a class of microelectromechanical systems described by nonlinear differential equations with random delays is examined. Robust fuzzy controllers are designed to control the energy conversion processes with the ultimate objective to guarantee optimal achievable performance. The fuzzy rule base used consists of a collection of r fuzzy IF-THEN rules defined as a function of the conditional variable. The method of the theory of cones and Lyapunov functionals is used to design a class of local fuzzy control laws. A verifiably sufficient condition for stochastic stability of fuzzy stochastic microelectromechanical systems is given. As an example, we have …


N-Body Growth Of A Bahcall-Wolf Cusp Around A Black Hole, Miguel Preto, David Merritt, Rainer Spurzem Aug 2004

N-Body Growth Of A Bahcall-Wolf Cusp Around A Black Hole, Miguel Preto, David Merritt, Rainer Spurzem

Articles

We present a clear N-body realization of the growth of a Bahcall-Wolf f µE^1/4 (µr^−7/4) density cusp around a massive object (“black hole”) at the center of a stellar system. Our N-body algorithm incorporates a novel implementation of Mikkola-Aarseth chain regularization to handle close interactions between star and black hole particles. Forces outside the chain were integrated on a GRAPE-6A/8 special-purpose computer with particle numbers up to N = 0.25×10^6. We compare our N-body results with predictions of the isotropic Fokker-Planck equation and verify that the time dependence of the density (both configuration and phase-space) predicted by the Fokker-Planck equation …


Identification And Detection Of Gaseous Effluents From Hyperspectral Imagery Using Invariant Algorithms, Erin M. O'Donnell, David W. Messinger, Carl Salvaggio, John Schott Aug 2004

Identification And Detection Of Gaseous Effluents From Hyperspectral Imagery Using Invariant Algorithms, Erin M. O'Donnell, David W. Messinger, Carl Salvaggio, John Schott

Articles

The ability to detect and identify effluent gases is, and will continue to be, of great importance. This would not only aid in the regulation of pollutants but also in treaty enforcement and monitoring the production of weapons. Considering these applications, finding a way to remotely investigate a gaseous emission is highly desirable. This research utilizes hyperspectral imagery in the infrared region of the electromagnetic spectrum to evaluate an invariant method of detecting and identifying gases within a scene. The image is evaluated on a pixel-by-pixel basis and is studied at the subpixel level. A library of target gas spectra …


Temporal Variations In The Apparent Emissivity Of Various Materials, Carl Salvaggio, David P. Miller Aug 2004

Temporal Variations In The Apparent Emissivity Of Various Materials, Carl Salvaggio, David P. Miller

Articles

Spectral emissivity measurements gathered in the longwave infrared region of the spectrum during a recent airborne hyperspectral data collection experiment indicated that the spectral emissivity of certain organic polymers changed by as much as 10% throughout the day. Inorganic and many other organic materials that were measured at the same time during this experiment showed no change. As this was an unexpected event, a subsequent experiment was designed to make emissivity measurements of several organic and inorganic materials over a 24-hour period/diurnal cycle. The results from this experiment confirmed that certain materials showed a significant spectral emissivity variation over this …


Comparison Of Basis-Vector Selection Methods For Target And Background Subspaces As Applied To Subpixel Target Detection, Peter Bajorski, Emmett J. Ientilucci, John Schott Aug 2004

Comparison Of Basis-Vector Selection Methods For Target And Background Subspaces As Applied To Subpixel Target Detection, Peter Bajorski, Emmett J. Ientilucci, John Schott

Articles

This paper focuses on comparing three basis-vector selection techniques as applied to target detection in hyperspectral imagery. The basis-vector selection methods tested were the singular value decomposition (SVD), pixel purity index (PPI), and a newly developed approach called the maximum distance (MaxD) method. Target spaces were created using an illumination invariant technique, while the background space was generated from AVIRIS hyperspectral imagery. All three selection techniques were applied (in various combinations) to target as well as background spaces so as to generate dimensionally-reduced subspaces. Both target and background subspaces were described by linear subspace models (i.e., structured models). Generated basis …


20 Square Per Inch Graph Paper For Photographic Applications, Andrew Davidhazy Aug 2004

20 Square Per Inch Graph Paper For Photographic Applications, Andrew Davidhazy

Articles

Admittedly this is not an "article" but it is hopefully something that some photography student, teacher or practitioner will find useful when they can't immediately locate 20 square per inch graph paper onto which to plot (at .4 log H or Density units per inch) film or paper characteristic curves.


Fibonacci And Lucas Numbers As Tridiagonal Matrix Determinants, Nathan D. Cahill, Darren Narayan Aug 2004

Fibonacci And Lucas Numbers As Tridiagonal Matrix Determinants, Nathan D. Cahill, Darren Narayan

Articles

There are many known connections between determinants of tridiagonal matrices and the Fibonacci and Lucas numbers.


De Facto Custodians: A Response To The Needs Of Informal Kin Caregivers?, Elizabeth Brandt Jul 2004

De Facto Custodians: A Response To The Needs Of Informal Kin Caregivers?, Elizabeth Brandt

Articles

No abstract provided.


A New High Power Parallel Converter Scheme For Active Power Filters, Malabika Basu, S. P. Das, Gopal Dubey Jul 2004

A New High Power Parallel Converter Scheme For Active Power Filters, Malabika Basu, S. P. Das, Gopal Dubey

Articles

A new topology for efficient utilisation of parallel converters as VAR compensators and active power filters (APF) for high power loads is proposed. Because of limited power handling capacity of individual devices, paralleling is the choice to increase rating of equipment, while keeping the THD of the current at the PCC within the agency specified standards. It has been reported in the literature that paralleling several converters, rather than switches, is more reliable in sharing of load. From this perspective, multilevel converters carry lot of weight, as their typical power circuit configuration limits the stress on individual devices to an …


Haitian Refugees And The Rule Of Law, Irwin P. Stotzky Jul 2004

Haitian Refugees And The Rule Of Law, Irwin P. Stotzky

Articles

No abstract provided.


Fletcher's Rethinking: A Memoir, Kyron J. Huigens Jul 2004

Fletcher's Rethinking: A Memoir, Kyron J. Huigens

Articles

No abstract provided.


Making Lawyers Compete, Lester Brickman Jul 2004

Making Lawyers Compete, Lester Brickman

Articles

The article argues that the market for contingent-fee-financed tort litigation is not price competitive, primarily due to uniform contingency fees charged by lawyers regardless of case-specific factors such as risk or effort required. This lack of competition leads to excessive costs for claimants and contributes to the expansion of tort liability. The author contends that the legal profession maintains this system through various barriers, including ethical rules and entry restrictions, which prevent competitive market forces from functioning effectively.


Liability For Life, Carl E. Schneider Jul 2004

Liability For Life, Carl E. Schneider

Articles

Marshall Klavan headed the Obstetrics and Gynecology Department of the Crozer-Chester Medical Center. He deeply feared strokes, perhaps because his father had been savaged by one. In 1993, Dr. Klavan wrote an advance directive which said that (as a court later put it) "he 'absolutely did not want any extraordinary care measures utilized by health care providers.'" On April29, 1997, Dr. Klavan tried to kill himsel£ He left suicide notes and a note refusing resuscitation. The next morning, medical center employees found him unconscious and took him to the emergency room, where he was resuscitated. By May 2, Dr. Klavan …