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Police Accountability And Early Warning Systems: Developing Policies And Programs, Geoffrey P. Alpert, Samuel Walker Oct 2000

Police Accountability And Early Warning Systems: Developing Policies And Programs, Geoffrey P. Alpert, Samuel Walker

Faculty Publications

The identification of police officers who have potential problems has emerged as a popular approach for curbing police misconduct and achieving accountability. Early warning (EW) systems are data-driven programs whose purpose is to identify officers whose behavior is problematic and to subject those officers to some kind of intervention, often in the form of counseling or training. Because of their potential for providing timely data on officer performance and giving police managers a framework for correcting unacceptable performance, early warning systems are consistent with the new demands for performance evaluation raised by community policing and the effective strategic management of …

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A Community Of Interest In The Due Process Calculus, Charles H. Koch Jr. Oct 2000

A Community Of Interest In The Due Process Calculus, Charles H. Koch Jr.

Faculty Publications

No abstract provided.

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Chinese Privatization: Between Plan And Market, Lan Cao Oct 2000

Chinese Privatization: Between Plan And Market, Lan Cao

Faculty Publications

No abstract provided.

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Regulation Of Sup Expression Identifies Multiple Regulators Involved In Arabidopsis Floral Meristem Development, Hajime Sakai, Beth A. Krizek, Steven E. Jacobsen, Elliot M. Meyerowitz Sep 2000

Regulation Of Sup Expression Identifies Multiple Regulators Involved In Arabidopsis Floral Meristem Development, Hajime Sakai, Beth A. Krizek, Steven E. Jacobsen, Elliot M. Meyerowitz

Faculty Publications

During the course of flower development, floral homeotic genes are expressed in defined concentric regions of floral meristems called whorls. The SUPERMAN ( SUP, also called FLO10 ) gene, which encodes a C2H2-type zinc finger protein, is involved in maintenance of the stamen/carpel whorl boundary (the boundary between whorl 3 and whorl 4) in Arabidopsis. Here, we show that the regulation of SUP expression in floral meristems is complex, consisting of two distinct phases, initiation and maintenance. The floral meristem identity gene LEAFY ( LFY ) plays a role in the initiation phase through at least two pathways, which …

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Peaches, Speech, And Clarence Thomas: Yes, California, There Is A Justice Who Understands The Ramifications Of Controlling Commercial Speech, Jennifer R. Franklin Sep 2000

Peaches, Speech, And Clarence Thomas: Yes, California, There Is A Justice Who Understands The Ramifications Of Controlling Commercial Speech, Jennifer R. Franklin

Faculty Publications

No abstract provided.

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The Polarization Of Sb Overlayers On Nimnsb(100), Takashi Komesu, C. N. Borca, Hae Kyung Jeong, P. A. Dowben, Delia Ristoiu, J. P. Nozières, Shane Stadler, Y. U. Idzerda Aug 2000

The Polarization Of Sb Overlayers On Nimnsb(100), Takashi Komesu, C. N. Borca, Hae Kyung Jeong, P. A. Dowben, Delia Ristoiu, J. P. Nozières, Shane Stadler, Y. U. Idzerda

Faculty Publications

We have investigated the induced polarization of paramagnetic Sb overlayers on the Heusler alloy NiMnSb. From combined X-ray absorption spectroscopy (XAS) and spin-polarized inverse photoemission spectroscopy (SPIPES), we can assign some of the unoccupied states of the Heusler alloy NiMnSb. With increasing thickness of the Sb overlayer, there is a decline in the density of states near the Fermi energy, as expected for a semimetal overlayer on a metallic substrate. While the Sb is polarized by the ferromagnetic NiMnSb substrate, consistent with the expectations of mean field theory, the polarization at the center of the surface/overlayer Brillouin zone cannot be …

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Measurement Of Exclusive Ω Electroproduction At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti Aug 2000

Measurement Of Exclusive Ω Electroproduction At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

The exclusive electroproduction of ω mesons, ep → e ω p, has been studied in the kinematic range 3 < Q2 < 20 GeV2, 40 < W < 120 GeV and |t| < 0.6 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 37.7 pb-1. The ω mesons were identified via the decay ω → π+ π- π0. The exclusive cross section in the above kinematic region is σ(ep) → e ω p = 0.108 ± 0.014 (stat.) ± 0.026(syst.) nb. The reaction ep → e φ p, φ → π+ π- π0, has also been measured. The cross sections, as well as the ratios σ γ·p → ωp/σ γ · p → p0p and σ γ · p → ωp/σγ·p → φp, are presented as a function of W and Q2. Thus, for the first time, the properties of ω electroproduction can be compared to those of p0,φ and J/ψ electroproduction at high W. (C) 2000 Elsevier Science B.V.

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Preservation And Interpretive Plan For The Dill Tract Civil War Earthworks On James Island, South Carolina, Steven D. Smith Aug 2000

Preservation And Interpretive Plan For The Dill Tract Civil War Earthworks On James Island, South Carolina, Steven D. Smith

Faculty Publications

Beginning in the late fall of 1862 the Confederate Army defending Charleston began work on a line of earthworks and batteries across James Island, South Carolina, from Secessionville to the Stono River. The lines were called the "New Lines" to distinguish them from other lines built in 1861. Today, approximately 3,000 feet of these lines still exist in very good condition on a 17.3 acre tract of land that represent a portion of the Dill Tract. The tract and earthworks (archaeological site 38CH 195) are part of a noncontiguous district listed on the National Register of Historic Places and are …

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Masses For Galactic Beat Cepheids, Noella L. D'Cruz, Siobahn M. Morgan, Erika Böhm-Vitense Aug 2000

Masses For Galactic Beat Cepheids, Noella L. D'Cruz, Siobahn M. Morgan, Erika Böhm-Vitense

Faculty Publications

Accurate mass determinations for Cepheids may be used to determine the degree of excess mixing in the interiors of their main-sequence progenitors : the larger the excess mixing, the larger the luminosity of the Cepheid of a given mass, or the smaller the mass of a Cepheid with given luminosity. Dynamical masses determined recently for a few Cepheid binaries indicate excess mixing somewhat stronger than that corresponding to the convective overshoot models by Schaller et al. Beat Cepheids can be used similarly to test main-sequence mixing in stellar interiors. The period ratios for beat Cepheids depend on luminosity, heavy element …

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Classification Of The Lie Bialgebra Structures On The Witt And Virasoro Algebras, Siu Hung Ng, Earl J. Taft Jul 2000

Classification Of The Lie Bialgebra Structures On The Witt And Virasoro Algebras, Siu Hung Ng, Earl J. Taft

Faculty Publications

We prove that all the Lie bialgebra structures on the one sided Witt algebra W1, on the Witt algebra W and on the Virasoro algebra V are triangular coboundary Lie bialgebra structures associated to skew-symmetric solutions r of the classical Yang-Baxter equation of the form r = a ∧ b. In particular, for the one-sided Witt algebra W1 = Der k[t] over an algebraically closed field k of characteristic zero, the Lie bialgebra structures discovered in Michaelis (Adv. Math. 107 (1994) 365-392) and Taft (J. Pure Appl. Algebra 87 (1993) 301-312) are all the Lie bialgebra structures on W1 up …

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Plasma Oscillations And Expansion Of An Ultracold Neutral Plasma, Scott D. Bergeson, S. Kulin, T. C. Killian, S. L. Rolston Jul 2000

Plasma Oscillations And Expansion Of An Ultracold Neutral Plasma, Scott D. Bergeson, S. Kulin, T. C. Killian, S. L. Rolston

Faculty Publications

We report the observation of plasma oscillations in an ultracold neutral plasma. With this collective mode we probe the electron density distribution and study the expansion of the plasma as a function of time. For classical plasma conditions, i.e., weak Coulomb coupling, the expansion is dominated by the pressure of the electron gas and is described by a hydrodynamic model. Discrepancies between the model and observations at low temperature and high density may be due to strong coupling of the electrons.

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Perception, Reputation And Reality: An Empirical Study Of Negotiation Skills, Andrea Kupfer Schneider Jul 2000

Perception, Reputation And Reality: An Empirical Study Of Negotiation Skills, Andrea Kupfer Schneider

Faculty Publications

No abstract provided.

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Electronic Billboards Along The Information Superhighway: Liability Under The Lanham Act For Using Trademarks To Key Internet Banner Ads, Christine Galbraith Davik Jul 2000

Electronic Billboards Along The Information Superhighway: Liability Under The Lanham Act For Using Trademarks To Key Internet Banner Ads, Christine Galbraith Davik

Faculty Publications

With almost one billion web pages on the Internet today, a search engine is a necessity at times. But search engines are also for-profit ventures and the financial success of these sites hinges on advertising revenue. One of the ways in which these sites generate income is by selling “keywords” to advertisers. Although there has been only one judicial decision – Playboy Enterprises, Inc. v. Netscape Communications – involving banner ads keyed to trademarks, it will undoubtedly not be the last. This article argues that despite the invisible nature of this unauthorized trademark use, the common practice of keying a …

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Almost Block Diagonal Linear Systems: Sequential And Parallel Solution Techniques, And Applications, P. Amodio, J.R. Cash, G. Roussos, R.W. Wright, G. Fairweather, I. Gladwell, G.L. Kraut, M. Paprzycki Jul 2000

Almost Block Diagonal Linear Systems: Sequential And Parallel Solution Techniques, And Applications, P. Amodio, J.R. Cash, G. Roussos, R.W. Wright, G. Fairweather, I. Gladwell, G.L. Kraut, M. Paprzycki

Faculty Publications

Almost block diagonal (ABD) linear systems arise in a variety of contexts, specifically in numerical methods for two-point boundary value problems for ordinary differential equations and in related partial differential equation problems. The stable, efficient sequential solution of ABDs has received much attention over the last fifteen years and the parallel solution more recently. We survey the fields of application with emphasis on how ABDs and bordered ABDs (BABDs) arise. We outline most known direct solution techniques, both sequential and parallel, and discuss the comparative efficiency of the parallel methods. Finally, we examine parallel iterative methods for solving BABD systems. …

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Labor Markets, Rationality, And Workers With Disabilities, Michael Ashley Stein Jul 2000

Labor Markets, Rationality, And Workers With Disabilities, Michael Ashley Stein

Faculty Publications

No abstract provided.

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Abdication By Another Name: An Ode To Lou Fisher, Neal Devins Jul 2000

Abdication By Another Name: An Ode To Lou Fisher, Neal Devins

Faculty Publications

No abstract provided.

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The Effect Of Courtroom Technologies On And In Appellate Proceedings And Courtrooms, Fredric I. Lederer Jul 2000

The Effect Of Courtroom Technologies On And In Appellate Proceedings And Courtrooms, Fredric I. Lederer

Faculty Publications

No abstract provided.

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Ritual And The Rhetoric Of Repetition In Angela's Ashes, Beverly Matiko Jul 2000

Ritual And The Rhetoric Of Repetition In Angela's Ashes, Beverly Matiko

Faculty Publications

No abstract provided.

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Diversity Performance Of Dual-Antenna Handsets Near Operator Tissue, Michael A. Jensen, Bruce M. Green Jul 2000

Diversity Performance Of Dual-Antenna Handsets Near Operator Tissue, Michael A. Jensen, Bruce M. Green

Faculty Publications

This paper presents a computational and experimental study of the diversity performance of two dual-antenna handsets operating indoors in the 902-928 MHz industrial, scientific, and medical (ISM) band. Of particular interest is the effect of the operator tissue on the diversity operation. Key indicators of diversity gain such as branch mean effective gain (MEG) and envelope correlation coefficient are obtained from finite-difference time-domain (FDTD) method simulations as well as from experimental measurements in three different indoor environments. Diversity gain for the handsets is also measured directly. Reasonable agreement is observed between the experimental and simulated results, with both approaches indicating …

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Digital Image Managers: A Unique Partnership, Samantha K. Hastings Jun 2000

Digital Image Managers: A Unique Partnership, Samantha K. Hastings

Faculty Publications

The University of North Texas and the African American Museum in Dallas are partners in a program designed to produce expert managers of digital images and information. The School of Library and Information Sciences in cooperation with the School of Visual Arts received a 1998 National Leadership Grant from the U.S. Institute of Museum and Library Services to build a collaborative program that includes a digital imaging laboratory and fellowships for students in a Certificate of Advanced Study Program. The work of the digital image manager includes the production of visual images, the creation and management of databases, and the …

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Coupled Atmosphere–Biophysics–Hydrology Models For Environmental Modeling, Robert L. Walko, Larry E. Band, Jill Baron, Timothy G. F. Kittel, Richard B. Lammers, Tsengdar J. Lee, Dennis S. Ojima, Roger A. Pielke Sr., Chris Taylor, Christina L. Tague, Craig J. Tremback, Pier Luigi Vidale Jun 2000

Coupled Atmosphere–Biophysics–Hydrology Models For Environmental Modeling, Robert L. Walko, Larry E. Band, Jill Baron, Timothy G. F. Kittel, Richard B. Lammers, Tsengdar J. Lee, Dennis S. Ojima, Roger A. Pielke Sr., Chris Taylor, Christina L. Tague, Craig J. Tremback, Pier Luigi Vidale

Faculty Publications

The formulation and implementation of LEAF-2, the Land Ecosystem–Atmosphere Feedback model, which comprises the representation of land–surface processes in the Regional Atmospheric Modeling System (RAMS), is described. LEAF-2 is a prognostic model for the temperature and water content of soil, snow cover, vegetation, and canopy air, and includes turbulent and radiative exchanges between these components and with the atmosphere. Subdivision of a RAMS surface grid cell into multiple areas of distinct land-use types is allowed, with each subgrid area, or patch, containing its own LEAF-2 model, and each patch interacts with the overlying atmospheric column with a weight proportional to …

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Unusual Magnetism Of Hexaborides, H. R. Ott, J. L. Gavilano, B. Ambrosini, P. Vonlanthen, E. Felder, L. Degiorgi, D. P. Young, Z. Fisk, R. Zysler Jun 2000

Unusual Magnetism Of Hexaborides, H. R. Ott, J. L. Gavilano, B. Ambrosini, P. Vonlanthen, E. Felder, L. Degiorgi, D. P. Young, Z. Fisk, R. Zysler

Faculty Publications

Various recent experimental investigations have revealed unusual magnetic properties of hexaborides with divalent cations M2+. EuB6 is ferromagnetic below 16 K and its low-temperature properties show remarkable similarities to those of manganese oxides, exhibiting the phenomenon of colossal magnetoresistance. Close to the phase transition as well as far below the ordering temperature, EuB6 exhibits anomalous features, that are briefly discussed. Alkaline-earth hexaborides are close to a metal-insulator transition and it has been found that, in a narrow range of electron doping, an itinerant-type of ferromagnetic order, stable up to temperatures of the order of 600-900 K, is established. This remarkable …

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A Review Of Empirical Studies Assessing Ethical Decision Making In Business, Terry W. Loe, Linda K. Ferrell, Phylis Mansfield Jun 2000

A Review Of Empirical Studies Assessing Ethical Decision Making In Business, Terry W. Loe, Linda K. Ferrell, Phylis Mansfield

Faculty Publications

This article summarizes the multitude of empirical studies that test ethical decision making in business and suggests additional research necessary to further theory in this area. The studies are categorized and related to current theoretical ethical decision making models. The studies are related to awareness, individual and organizational factors, intent, and the role of moral intensity in ethical decision making. Summary tables provide a quick reference for the sample, findings, and publication outlet. This review provides insights for understanding organizational ethical decision constructs, where ethical decision making theory currently stands, and provides insights for future empirical work on organizational ethical …

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Measurement Of Inclusive(D(S)(±)) Photoproduction At Hera Zeus Collaboration, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti May 2000

Measurement Of Inclusive(D(S)(±)) Photoproduction At Hera Zeus Collaboration, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, G. Abbiendi, F. Anselmo, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Laurenti

Faculty Publications

The first measurement of inclusive D(s)(±) photoproduction at HERA has been performed with the ZEUS detector for photon-proton centre-of-mass energies 130 < W < 280GeV. The measured cross section for 3 < p (is perpendicular to)/(D(s)) < 12GeV and |η(D(s))| < 1.5 is σ(ep → D(s)X) = 3.79 ± 0.59(stat.) -0.46/+0.26 (syst.) ± 0.94(br.)nb, where the last error arises from the uncertainty in the D(s)(±) decay branching ratio. The measurements are compared with inclusive D*(±) photoproduction cross sections in the same kinematic region and with QCD calculations. The D(s)(±) cross sections lie above a fixed-order next-to-leading order calculation and agree better with a tree-level O(αα(s)/3) calculation that was tuned to describe the ZEUS D*(±) cross sections. The ratio of D(s)(±) to D*(±) cross sections is 0.41 ± 0.07 (stat.) -0.05/+0.03 (syst.) ± 0.10(br.). From this ratio, the strangeness-suppression factor in charm photoproduction, within the LUND string fragmentation model, has been calculated to be γ(s) = 0.27 ± 0.05 ± 0.07(br.). The cross-section ratio and γ(s) are in good agreement with those obtained in charm production in e+e- annihilation. (C) 2000 Elsevier Science B.V.

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Accumulation Hole Layer In P-Gan/Algan Heterostructures, M. S. Shur, A. D. Bykhovski, R. Gaska, J. W. Yang, Grigory Simin, M. A. Khan May 2000

Accumulation Hole Layer In P-Gan/Algan Heterostructures, M. S. Shur, A. D. Bykhovski, R. Gaska, J. W. Yang, Grigory Simin, M. A. Khan

Faculty Publications

We present the results on piezoelectric and pyroelectricdoping in AlGaN-on-GaN and GaN-on-AlGaN heterostructures and demonstrate p-GaN/AlGaN structures with accumulation hole layer. Our results indicate that polarization charge can induce up to 5×1013 cm−2 holes at the AlGaN/GaN heterointerfaces. We show that the transition from three-dimensional (3D) to two-dimensional (2D) hole gas can be only achieved for hole sheet densities on the order of 1013 cm−2 or higher. At lower densities, only 3D-hole accumulation layer may exist. These results suggest that a piezoelectrically induced 2D-hole gas can be used for the reduction of the base spreading resistance …

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Direct Nitric Oxide Signal Transduction Via Nitrosylation Of Iron-Sulfur Centers In The Soxr Transcription Activator, Huangen Ding, Bruce Demple May 2000

Direct Nitric Oxide Signal Transduction Via Nitrosylation Of Iron-Sulfur Centers In The Soxr Transcription Activator, Huangen Ding, Bruce Demple

Faculty Publications

Nitric oxide (NO) has diverse roles in intercellular communication and (at higher levels) in immune-mediated cell killing. NO reacts with many cellular targets, with cell-killing effects correlated to inactivation of key enzymes through nitrosylation of their iron-sulfur centers. SoxR protein, a redox-sensitive transcription activator dependent on the oxidation state of its binuclear iron-sulfur ([2Fe-2S]) centers, is also activated in Escherichia coli on exposure to macrophage-generated NO. We show here that SoxR activation by NO occurs through direct modification of the [2Fe-2S] centers to form protein-bound dinitrosyl-iron-dithiol adducts, which we have observed both in intact bacterial cells and in purified SoxR …

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Low Temperature Anomaly In Mesoscopic Kondo Wires, P. Mohanty, Richard A. Webb May 2000

Low Temperature Anomaly In Mesoscopic Kondo Wires, P. Mohanty, Richard A. Webb

Faculty Publications

We report the observation of an anomalous magnetoresistance in extremely dilute quasi-one-dimensional AuFe wires at low temperatures, along with a hysteretic background at low fields. The Kondo resistivity does not show the unitarity limit down to the lowest temperature, implying uncompensated spin states. We suggest that the anomalous magnetoresistance may be understood as the interference correction from the accumulation of geometric phase in the conduction electron wave function around the localized impurity spin.

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At The Intersection Of Visible And Invisable Worlds: United States Privacy Law And The Internet, Dorothy J. Glancy May 2000

At The Intersection Of Visible And Invisable Worlds: United States Privacy Law And The Internet, Dorothy J. Glancy

Faculty Publications

The purpose of this essay is to consider some characteristics ofUnited States privacy law that contribute to the obscurity of many intersections between the Internet and privacy law. This discussion is not an exhaustive catalogue of all of the ways in which United States privacy law may apply to Internet activities. Nor is it intended to be
an evaluation of the effectiveness of this privacy law. Rather, the point here is to explore why the application of privacy law to the Internet is a matter of considerable complexity and some uncertainty.
The focus is on certain characteristics of privacy law …

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Annotated Bibliography Of Research In The Teaching Of English, Deborah Brown, Wayne Martino, Gert Rijlaarsdam, Anne D'Antonio Stinson, Melissa E. Whiting May 2000

Annotated Bibliography Of Research In The Teaching Of English, Deborah Brown, Wayne Martino, Gert Rijlaarsdam, Anne D'Antonio Stinson, Melissa E. Whiting

Faculty Publications

Twice a year, in the May ann November issues, RTE publishes a selected bibliography of recent research in the teaching of English. Most of the studies appeared during the six-mouth period preceding the complication of the bibliography (July through December; 1999, for the present bibliography), but some studies that appeared earlier are occasionally included. The listing is selective; we make no attempt to include all research and research-related articles that appeared in the period under review. Comments on the bibliography and suggestions about items for inclusion may be directed to the bibliography editors We encourage you to send your suggestions …

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Using Implicit Feedback For User Modeling In Internet And Intranet Searching, Jinmook Kim, Douglas W. Oard, Kathleen Romanik May 2000

Using Implicit Feedback For User Modeling In Internet And Intranet Searching, Jinmook Kim, Douglas W. Oard, Kathleen Romanik

Faculty Publications

Powerize Server 1.0, developed by Powerize.com, is a content-based information filtering and retrieval system that presently uses a manually constructed user model known as a search profile. User modeling captures a user’s information needs. A user model can be constructed explicitly by the user or implicitly by exploiting feedback from the user about which documents are relevant. Implicit feedback can be inferred from user behavior without any additional work on the part of the user. The study reported in this paper investigates a way of implementing the implicit feedback technique of user modeling for the Powerize Server 1.0. Previous studies …

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