Digital Commons Network^™

Methods Of Spectral Reflectance Reconstruction For A Sinarback 54 Digital Camera, Yonghui Zhao, Lawrence Taplin, Mahdi Nezamabadi

Articles

There is an urgent need to build digital image databases with adequate colorimetric accuracy for museums, achieves and libraries. Traditional colorimetric imaging suffers from the possibilities of metameric problem, while spectral imaging can facilitate accurate tristimulus estimation and possibilities for spectral reconstruction of each pixel. Spectral image archives can be used to render accurate images both spectrally and colorimetrically to the original target for any illuminant and observer. The most convenient and practical capture system for spectral imaging combines a commercial trichromatic camera with two absorption filters to define image spectrally. Two images were taken for each target; so six-channel …

Modifications Of A Sinarback 54 Digital Camera For Spectral And High-Accuracy Colorimetric Imaging: Simulations And Experiments, Roy Berns, Lawrence Taplin, Mahdi Nezamabadi

Articles

A search technique was used to identify sets of colored glass filters that could be placed in the optical path of the Sinarback 54 camera system resulting in improved color accuracy compared with a production unit and the ability to perform spectral estimation. A green and blue filter, each a pair of filters, were identified and constructed from Schott glass. RGB images were collected through these two filters resulting in six image planes. Using the Gretag Macbeth ColorChecker DC and a custom target of blue artist pigments, a transformation was derived that converted digitally flat-fielded and photometrically-linearized camera signals to …

Nuclear Properties Of A Sample Of Nearby Spirals From Stis [Space Telescope Imaging Spectrograph] Imaging, Claudia Scarlata, Massimo Stiavelli, M. A. Hughes, David Axon, A. Alonso-Herrero, J. Atkinson, D. Batcheldor, J. Binney, A. Capetti, C. M. Carollo, L. Dressel, J. Gerssen, D. Macchetto, W. Maciejewski, A. Marconi, M. Merrifield, M. Ruiz, W. Sparks, Z. Tzvetanov, Roeland P. Van Der Marel

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We present surface photometry for the central regions of a sample of 48 spiral galaxies (mostly unbarred and barred of types Sbc or Sc) observed with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. Surface brightness profiles were derived and modeled with a Nuker law. We also analyzed archival Wide Field Planetary Camera 2 images with a larger field of view, available for 18 galaxies in our sample. We modeled the extracted bulge surface brightness profiles with an exponential, an r1/4, or an rn profile. In agreement with previous studies, we find that bulges of Sbc galaxies …

Desirable Properties Of An Unconventional Population Control Policy, Amitrajeet Batabyal

Articles

A great deal of concern has now been expressed about the authoritarian population control policies adopted by Asian countries such as Vietnam, India, and particularly China. Many of these autocratic policies and certainly the Chinese "one child policy" have failed in part because the framers of these policies have attempted to unsuccessfully circumvent a long standing cultural desire for male children. Therefore, in this note, we first propose an unconventional population control policy that is sensitive to this cultural desire for male progeny. Next, we show that this policy is desirable because (i)it is likely to ameliorate the "missing girls" …

On The Links Between Managerial Actions, Keystone Species, And The Resilience Of Ecological-Economic Systems, Amitrajeet A. Batabyal

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Managerial actions influence the survival probabilities of the keystone species of an ecological-economic system. In turn, the well-being of these keystone species translates into the well being or the resilience of the underlying ecological-economic system. What are the theoretical links between managerial actions, keystone species, and the resilience of ecological-economic systems? Recently, Batabyal (2002) has addressed aspects of this question. In this paper, we extend the analysis in Batabyal (2002). First, we use a stochastic model to delineate a stylized ecological-economic system. Next, we discuss the links between managerial actions, keystone species, and this ecological-economic system’s resilience. Finally, we show …

Camera For Panoramic Photographic Lampshades And More, Andrew Davidhazy

Articles

At one time I was hoping that I could interest Popular Photography magazine in publishing a piece on my work with a unique panoramic camera that is able to make conical projections or reproductions of scenes surrounding the camera as opposed to cylindrical ones made by all other rotating panoramic cameras. Well, this was the piece submitted for consideration. They were not interested.

The Meaning Of Probability Judgments: An Essay On The Use And Misuse Of Behavioral Economics, Charles M. Yablon

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In this essay, Professor Yablon challenges the assumption that behavioral heuristics-such as the availability heuristic -constitute "biases" that necessarily lead to errors in probability judgments. He notes that there are many different concepts of probability and, in many contexts, no agreed-upon method for determining the correctness of inconsistent probability judgments. Yet many legal academics and policymakers ignore these complex aspects of probability theory, assuming that statistical or frequentist probabilities are always to be preferred over subjective judgments of probability.

Professor Yablon argues that choosing between frequentist and subjective approaches to probability judgments in policymaking can only be done with great …

Increased Frequency Of The Mthfr A1298c Mutation In An Irish Population, Cathal Mccarthy, Fergus Ryan, Joseph Vaughan

Articles

No abstract provided.

An Investigation Of The Relationship Between In-Vitro And In-Vivo Ultrasound Image Quality Parameters, Jacinta Browne, Amanda Watson, Cathy Muir, Peter Hoskins, Alex Elliott

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The aim of this paper is to investigate the relationship between Bmode and colour Doppler technical test methods with the clinical perception of Bmode and Doppler invivo test parameters. It was found that technical and clinical comparisons between the Bmode test parameters: lateral resolution versus clinical resolution; anechoic target detection versus clinical noise; and penetration depth versus clinically useful penetration depth, demonstrated moderate correlations, (r= 0.69, p

Validation Of A Sensitivity Performance Index Test Protocol And Evaluation Of Colour Doppler Sensitivity For A Range Of Ultrasound Scanners, Jacinta Browne, Amanda Watson, Peter Hoskins, Alex Elliott

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The ability to detect flow is the most crucial aspect of an ultrasound (US) system because, if flow cannot be detected, no other aspect of performance matters. The objectives of this study were to validate a Doppler “sensitivity performance index,” a figure of merit, and to determine if it could be used to differentiate colour Doppler sensitivity performance in scanners of varying complexity. The sensitivity performance index was developed to give a combined measure of related aspects of sensitivity, such as the lowest detectable velocity, the vessel size and the penetration depth. The colour Doppler sensitivity was evaluated objectively as …

Objective Measurements Of Image Quality, Jacinta Browne, Amanda Watson, Nicholas Gibson, Nicholas Dudley, Alex Elliott

Articles

Tissue harmonic imaging (THI) and compound imaging have been reported clinically to improve contrast resolution, tissue differentiation and overall image quality. However, there have been limited studies to date to quantify objectively the improvements in image quality achieved with these new imaging techniques. The aim of this study was to quantify differences in image quality that exist between conventional B-mode imaging, harmonic imaging, compound imaging and harmonic compound imaging. An ATL HDI 5000 scanner with three probes (C5-2, L7-4 and L12-5) was tested with two different types of test object, the Gammex-RMI model 404 GS LE and the Gammex-RMI 403 …

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 …

Ecotoxicological Research At Dit, Maria Davoren, Colm O'Dowd, Sharon Ni Shuilleabhain

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The term ecotoxicology first defined by Rene Truhart in 1969, essentially describes the study of the harmful effects of chemicals upon ecosystems.

Turning An Articulated Truck On A Spreadsheet, Jim Mcgovern

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This paper describes how a standard office spreadsheet application was used to set up an engineering model for the simulation and analysis of the turning of articulated trucks

An Autopsy Of The Structural Reform Injunction: Oops ... It's Still Moving, Myriam E. Gilles

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No abstract provided.

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

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 …

Minimal K-Rankings And The A-Rank Number Of A Path, Victor Kostyuk, Darren Narayan, Victoria Shults

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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) = …

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

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 …

The Laconomics Of Apples And Oranges: A Speculative Analysis Of The Economic Concept Of Commensurability, Jeanne L. Schroeder

Articles

The article challenges the commensurability debate, arguing that the opposition between commensurability and incommensurability is not a resolvable conflict but a necessary paradox rooted in human subjectivity and symbolic thought. Drawing on the philosophical traditions of Kant, Hegel, and Lacan, the analysis posits that both quantitative and qualitative aspects are essential in legal and economic decision-making, emphasizing the need to manage rather than resolve this paradox. The speculative approach suggests that rationality involves acknowledging and navigating this duality, rather than adhering to one side of the debate.

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.

Reply To "Comment On ‘Atomic Spectral Line Free-Parameter Deconvolution Procedure’”, Vladimir Milosavljevic, Goran Poparic

Articles

We do not agree with the authors of the preceding Comment [X. Nikolic, X. Ojurovic, and X. Mijatovic, Phys. Rev. E, 67, 058401, 2003]. Our numerical procedure for the deconvolution of the theoretical asymmetric convolution integral of a Gaussian and a plasma broadened spectral line profile jA,R(λ) for spectral lines enables the determination of all broadening parameters. All broadening parameters can be determined directly from the recorded line profile of a single line, with minimal assumptions or prior knowledge. Additional experimental diagnostics are not required.

The Persistence Of Ecological-Economic Systems: Alternate Measures And Their Properties, Amitrajeet A. Batabyal

Articles

A number of ecologists and some economists have commented on the significance of persistence as a stability concept for jointly determined ecological-economic systems. This notwithstanding, the economics and the regional science literatures have paid scant attention to the problem of computing an ecological-economic system’s persistence. As such, this paper has two objectives. First, we derive three measures of the persistence of a jointly determined ecological-economic system whose temporal behavior is governed by the presence of thresholds. Next, we compare and contrast these three measures. Finally, we discuss their theoretical properties and their practical uses.

The He I 706.52 Nm Line Shape Characteristics In The Plasma Diagnostics, Vladimir Milosavljevic, Stevan Djenize

Articles

On the basis of the precisely recorded 706.52 nm He I line shape we have obtained the basic plasma parameters i.e. electron temperature (T) and electron density (N) using our new line deconvolution procedure in the case of five various plasmas created in a linear, low–pressure, pulsed arc discharge. Plasma parameters have been also measured using independent experimental diagnostical techniques. Excellent agreement was found among the two sets of the obtained parameters. This enables our deconvolution procedure to recommendation for plasma diagnostical purposes, especially in astrophysics where direct measurements of the plasma parameters (T and …

On-Line Spatial Processing Systems, James Carswell, Michela Bertolotto

Articles

On-line Spatial Processing (OLSP) delivers high performance spatial systems for the modelling and monitoring of dynamic environments. It provides an ideal solution for the management of networks, land and assets, and the real-time tracking of changing spatial systems. OLSP is server-centric, as opposed to the primarily desktop-centric world of GIS. It places spatial data at the heart of the organisation's IT systems and integrates it with business and attribute data. The result is more effective use of spatial data and improved decision support and spatial intelligence throughout the organisation.

Law's Non-Existent Empire, Jeanne L. Schroeder, David G. Carlson

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The article critiques Pierre Schlag's normative legal thought, arguing that while his descriptive critique of law as a fiction is accurate, his normative proposal to abolish law is contradictory and flawed. By incorporating Lacanian psychoanalysis, the authors contend that law, as part of the symbolic order, is constitutive of subjectivity and cannot be abolished. They propose that legal scholarship should instead focus on exposing law's role in shaping subjectivity rather than seeking to eliminate it. The analysis emphasizes that law, like language, is an intersubjective system sustained by collective belief, despite lacking a concrete foundation.

Ion Contribution To The Prominent Ne I, Ar I And Kr I Spectral Lines Broadening, Vladimir Milosavljevic, Stevan Djenize

Articles

On the basis of the observed asymmetry of the measured spectral line profiles we have obtained the ion contribution to the (26 lines), (19 lines) and (20 lines) spectral line broadening due to the quasi-static ion approximation and ion-dynamical effects. The ion broadening parameters ( A) and the ion dynamic coefficients ( D) have been obtained directly by the use of our line deconvolution procedure which allows the determination of the basic physical properties that characterize the line profile and also the relevant plasma parameters. We are the first to publish experimental data, viz. D and A values …

Fair Use Across Time, Justin Hughes

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This Article proposes that, as a copyright work ages, the scope of fair use, especially as to derivative works and uses, should expand. This is because the "market" for a copyrighted work has a temporal dimension; the copyrighted work has a market of a fixed number of years. In considering the fourth element of § 107 fair use, courts have discussed two kinds of situations in which the market for a plaintiff's work can be adversely affected: (1) situations where a particular defendant's action adversely affected the plaintiffs market, and (2) situations where the defendant's action, if it became "widespread," …

Energy Guides As Teaching Aids, David Farnsworth

Articles

This article may be accessed from the following website (additional fees may apply): http://findarticles.com/p/articles/mi_qa3950/is_200301/ai_n9173558 One of the many challenges of teaching, especially on the lower level, is that of motivation. Thus, problems that students recognize as meaningful in life are of great help in the classroom. This problem could be used in algebra or a statistics course to provide motivation. The following analysis has students calculating appliance efficiency using basic arithmetic, and they can take this problem home to their own appliances as well as apply these skills to their future purchases.