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

Digital Commons Network™

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

Faculty Publications

Discipline
Institution
Keyword
Publication Year
File Type

Articles 13741 - 13770 of 16831

Full-Text Articles in Entire DC Network

Nitrogen Loading Into An Urban Estuary: Lake Pontchartrain (Louisiana, U.S.A.), R. Eugene Turner, Q. Dortch, Dubravko Justic, Erick M. Swenson Nov 2002

Nitrogen Loading Into An Urban Estuary: Lake Pontchartrain (Louisiana, U.S.A.), R. Eugene Turner, Q. Dortch, Dubravko Justic, Erick M. Swenson

Faculty Publications

We constructed a nitrogen loading budget for the Lake Pontchartrain watershed located north of New Orleans, Louisiana (U.S.A.). Water quality measurements, discharge estimates, and literature values were used to establish the annual and seasonal variations in loading rates for total nitrogen and nitrate. The relatively stable annual loadings (million kg N) are about 10× that of the pre-settlement nitrogen loading, and come from atmosphere (1.3), the watershed (7.8), pumped urban runoff from New Orleans (1.0), and leakage through the Bonnet Carré flood control structure (0.5–0.9). Relatively minor additional amounts come from nitrogen fixation in the Lake. Occasional openings of the …


Deconstructing The General Plan Of Rehabilitation, John W. Lee Nov 2002

Deconstructing The General Plan Of Rehabilitation, John W. Lee

Faculty Publications

The general plan of rehabilitation doctrine provides that expenses incurred as part of a plan of general rehabilitation must be capitalized even though the same expenses incurred separately would be deductible as ordinary and necessary repairs. The emerging general standard after INDOPCO for current deduction of an expenditure with future benefits, the case with most repair/ improvement expenditures, is a balancing test: Whether the taxpayer ’s administrative and record keeping costs associated with capitalization outweigh the potential distortion of income from a current deduction of the future benefit expenditures. “Rough justice” rules for current deduction of future benefits expenditures, reflecting …


Infection Outcome And Cytokine Gene Expression In Brugia Pahangi-Infected Gerbils (Meriones Unguiculatus) Sensitized With Brucella Abortus, Sharon R. Chirgwin, Philip H. Elzer, Sharon U. Coleman, Jena M. Nowling, Sue D. Hagius, Matthew D. Edmonds, Thomas R. Klei Nov 2002

Infection Outcome And Cytokine Gene Expression In Brugia Pahangi-Infected Gerbils (Meriones Unguiculatus) Sensitized With Brucella Abortus, Sharon R. Chirgwin, Philip H. Elzer, Sharon U. Coleman, Jena M. Nowling, Sue D. Hagius, Matthew D. Edmonds, Thomas R. Klei

Faculty Publications

Filarial infections have been associated with the development of a strongly polarized Th2 host immune response and a severe impairment of mitogen-driven proliferation and type 1 cytokine production in mice and humans. The role of this polarization in the development of the broad spectra of clinical manifestations of lymphatic filariasis is still unknown. Recently, data gathered from humans as well as from immunocompromised mouse models suggest that filariasis elicits a complex host immune response involving both Th1 and Th2 components. However, responses of a similar nature have not been reported in immunologically intact permissive models of Brugia infection. Brucella abortus-killed …


Annotated Bibliography Of Research In The Teaching Of English, Deborah Brown, Catherine Beavis, Judith Kalman, Macrina Gómez, Gert Rijlaarsdam, Anne D'Antonio Stinson, Melissa E. Whiting Nov 2002

Annotated Bibliography Of Research In The Teaching Of English, Deborah Brown, Catherine Beavis, Judith Kalman, Macrina Gómez, Gert Rijlaarsdam, Anne D'Antonio Stinson, Melissa E. Whiting

Faculty Publications

Twice a year, in the May and November issues, RTE publishes a selected bibliography of recent research in the teaching of English. Most of the studies appeared during the six-month period preceding the compilation of the bibliography (January through June 2002 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 …


The Design And Evaluation Of Interactivities In A Digital Library, Muniram Budhu, Anita Coleman Nov 2002

The Design And Evaluation Of Interactivities In A Digital Library, Muniram Budhu, Anita Coleman

Faculty Publications

The US National Science Foundation has established a program to create a National Science, Mathematics, Engineering and Technology Education Digital Library (NSDL). One of the subsidiary NSDL libraries under development is the National Civil Engineering Educational Resources Library (NCERL). The first phase of NCERL is the creation and collection of digital resources in three areas of civil engineering—geotechnical (soil), rock, and water engineering (GROW). The concept of interactivities guides the design, development, and evaluation efforts of the GROW digital collection. This article describes the salient features of GROW, defines and discusses interactivities as an emerging, integral part of teaching and …


Mapping The Mesoscale Interface Structure In Polycrystalline Materials, Brent L. Adams, C. L. Bauer, D. Casasent, A. Morawiec, S. Ozdemir, A. Talukder, Chialin T. Wu Nov 2002

Mapping The Mesoscale Interface Structure In Polycrystalline Materials, Brent L. Adams, C. L. Bauer, D. Casasent, A. Morawiec, S. Ozdemir, A. Talukder, Chialin T. Wu

Faculty Publications

This work was supported primarily by the MRSEC Program of the National Science Foundation under Award Numbers DMR-9632556 and DMR-0079996. A new experimental approach to the quantitative characterization of polycrystalline microstructure by scanning electron microscopy is described. Combining automated electron backscattering diffraction with conventional scanning contrast imaging and with calibrated serial sectioning, the new method (Mesoscale Interface Mapping System, MIMS) recovers precision estimates of the 3-dimensional idealized aggregate function G(x). This function embodies a description of lattice phase and orientation (limiting resolution ~ 1 degree) at each point x (limiting spatial resolution ~ 100 nanometers), and therefore contains a complete …


Review Of The New Americans: How The Melting Pot Can Work Again, By Michael Barone, Fred Foldvary Nov 2002

Review Of The New Americans: How The Melting Pot Can Work Again, By Michael Barone, Fred Foldvary

Faculty Publications

A review of The New Americans: How the Melting Pot Can Work Again, by Michael Barone. Regnery Publishing • 2001 • 338 pages • $27.95 


Activity Patterns And Correlates Among Youth: Differences By Weight Status, Wendell C. Taylor, James F. Sallis, Marsha Dowda, Patty S. Freedson, Karen Eason, Russell R. Pate Nov 2002

Activity Patterns And Correlates Among Youth: Differences By Weight Status, Wendell C. Taylor, James F. Sallis, Marsha Dowda, Patty S. Freedson, Karen Eason, Russell R. Pate

Faculty Publications

The purposes of the study were to assess differences in physical activity levels and correlates of physical activity among overweight (‡ 85th percentile of body mass index for their sex and age) and non-overweight (< 85th percentile) youth. The sample included 509 seventh through twelfth graders. Activity was measured by a 7-day, 46-item activity checklist. Overweight girls were more sedentary than non-overweight girls (p<.03), and non-overweight girls engaged in more vigorous physical activity than overweight girls (p<.03). For boys, there were no significant differences in activity. The regression analyses for vigorous activity yielded the largest total R2's (R2=.049 for overweight and R2=.27 for non-overweight.) The significant factor for overweight youth was greater athletic coordination (p<.01). For non-overweight youth, the significant factors were greater family support (p<.05), greater peer support (p<.001), fewer barriers (p<.03), and greater athletic coordination (p<.01). Correlates of physical activity vary by weight status of young people.


Horizon Occlusion Culling For Real-Time Rendering Of Hierarchical Terrains, Parris K. Egbert, Brandon Lloyd Oct 2002

Horizon Occlusion Culling For Real-Time Rendering Of Hierarchical Terrains, Parris K. Egbert, Brandon Lloyd

Faculty Publications

We present a technique to perform occlusion culling for hierarchical terrains at run-time. The algorithm is simple to implement and requires minimal pre-processing and additional storage, yet leads to 2-4 times improvement in framerate for views with high degrees of occlusion. Our method is based on the well-known occlusion horizon algorithm. We show how to adapt the algorithm for use with hierarchical terrains. The occlusion horizon is constructed as the terrain is traversed in an approximate front to back ordering. Regions of the terrain are compared to the horizon to determine when they are completely occluded from the viewpoint. Culling …


Histone Methyltransferase Activity Of A Drosophila Polycomb Group Repressor Complex, Jürg Müller, Craig M. Hart, Nicole J. Francis, Marcus L. Vargas, Aditya Sengupta, Brigitte Wild, Ellen L. Miller, Michael B. O'Connor, Robert E. Kingston, Jeffrey A. Simon Oct 2002

Histone Methyltransferase Activity Of A Drosophila Polycomb Group Repressor Complex, Jürg Müller, Craig M. Hart, Nicole J. Francis, Marcus L. Vargas, Aditya Sengupta, Brigitte Wild, Ellen L. Miller, Michael B. O'Connor, Robert E. Kingston, Jeffrey A. Simon

Faculty Publications

Polycomb group (PcG) proteins maintain transcriptional repression during development, likely by creating repressive chromatin states. The Extra Sex Combs (ESC) and Enhancer of Zeste [E(Z)] proteins are partners in an essential PcG complex, but its full composition and biochemical activities are not known. A SET domain in E(Z) suggests this complex might methylate histones. We purified an ESC-E(Z) complex from Drosophila embryos and found four major subunits: ESC, E(Z), NURF-55, and the PcG repressor, SU(Z)12. A recombinant complex reconstituted from these four subunits methylates lysine-27 of histone H3. Mutations in the E(Z) SET domain disrupt methyltransferase activity in vitro and …


Measurement Of Diffractive Production Of D*±(2010) Mesons In Deep-Inelastic Scattering At Hera, S. Chekanov, D. Krakauer, S. Magill, B. Musgrave, J. Repond, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, A. Margotti, R. Nania, F. Palmonari, A. Pesci, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, I. Brock Oct 2002

Measurement Of Diffractive Production Of D*±(2010) Mesons In Deep-Inelastic Scattering At Hera, S. Chekanov, D. Krakauer, S. Magill, B. Musgrave, J. Repond, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, A. Margotti, R. Nania, F. Palmonari, A. Pesci, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, I. Brock

Faculty Publications

Diffractive production of D*±(2010) mesons in deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 44.3 pb-1. Diffractive charm production is identified by the presence of a large rapidity gap in the final state of events in which a D*±(2010) meson is reconstructed in the decay channel D*+ → (D0 → K-π+)πs+ (+ charge conjugate). Differential cross sections when compared with theoretical predictions indicate the importance of gluons in such diffractive interactions. © 2002 Elsevier Science B.V. All rights reserved.


An Evaluation Of Factors Related To The Disproportionate Representation Of Children Of Color In Santa Clara County’S Child Welfare System: Child And Family Characteristics And Pathways Through The System Phase 2, Alice Hines, Peter Lee, Laurie Drabble, Lonnie Snowden, Kathy Lemon Osterling Oct 2002

An Evaluation Of Factors Related To The Disproportionate Representation Of Children Of Color In Santa Clara County’S Child Welfare System: Child And Family Characteristics And Pathways Through The System Phase 2, Alice Hines, Peter Lee, Laurie Drabble, Lonnie Snowden, Kathy Lemon Osterling

Faculty Publications

While child abuse and neglect appears to affect children of all racial and ethnic origins (US Department of Health and Human Services, 1998; Sedlack & Broadhurst, 1996), an analysis of national, California and Santa Clara County data on the ethnicities of children in out of home placement reveals that, compared to their presence in the general population, there is a disproportionate involvement of children of color in the public child welfare system (CWS). In Santa Clara County, in particular, when compared to the general population, African American, Hispanic/Latino and Native American children are overrepresented in the CWS, while Asian American/Pacific …


A Freedom That Is No Freedom: Jeremiah 34 And The Sabbatical Principle, Rolf A. Jacobson Oct 2002

A Freedom That Is No Freedom: Jeremiah 34 And The Sabbatical Principle, Rolf A. Jacobson

Faculty Publications

The “release” of the Hebrew slaves during the time of the Babylonian siege was a cynical affair, setting the slaves “free” from being provided food and shelter by their owners in a time of scarcity. The passage raises important questions about the nature of freedom: freedom from? freedom unto? freedom for?


Unwarranted Variations In The Quality Of Health Care: Can The Law Help Medicine Provide A Remedy/Remedies?, Philip G. Peters Jr., John E. Wennberg M.D. Oct 2002

Unwarranted Variations In The Quality Of Health Care: Can The Law Help Medicine Provide A Remedy/Remedies?, Philip G. Peters Jr., John E. Wennberg M.D.

Faculty Publications

This article reviews the essential findings of studies of variations in quality of care according to three categories of care: effective care, preference-sensitive care, and supply-sensitive care. It argues that malpractice liability and informed consent laws should be based on standards of practice that are appropriate to each category of care. In the case of effective care, the legal standard should be that virtually all of those in need should receive the treatment, whether or not it is currently customary to provide it. In the case of preference-sensitive care, the law should recognize the failure of the doctrine of informed …


Fluid Dynamics Of Flapping Aquatic Flight In The Bird Wrasse: Three-Dimensional Unsteady Computations With Fin Deformation, Ravi Ramamurti, William C. Sandberg, Rainald Lӧhner, Jeffrey A. Walker Phd, Mark W. Westneat Oct 2002

Fluid Dynamics Of Flapping Aquatic Flight In The Bird Wrasse: Three-Dimensional Unsteady Computations With Fin Deformation, Ravi Ramamurti, William C. Sandberg, Rainald Lӧhner, Jeffrey A. Walker Phd, Mark W. Westneat

Faculty Publications

Many fishes that swim with the paired pectoral fins use fin-stroke parameters that produce thrust force from lift in a mechanism of underwater flight. These locomotor mechanisms are of interest to behavioral biologists, biomechanics researchers and engineers. In the. present study, we performed the first three-dimensional unsteady computations of fish swimming with oscillating and deforming fins. The objective of these computations was to investigate the fluid dynamics of force production associated with the flapping aquatic flight of the bird wrasse Gomphosus varius. For this computational work, we used the geometry of the wrasse and its pectoral fin, and previously measured …


Negotiating And Analyzing Electronic License Agreements, Duncan E. Alford Oct 2002

Negotiating And Analyzing Electronic License Agreements, Duncan E. Alford

Faculty Publications

Mr Alford analyzes license agreements for electronic resources and suggests certain negotiation points to consider when entering into such an agreement. He begins by describing the results of a survey of law librarians about their preparation for and techniques used when negotiating electronic license agreements and the legal strategies used by publishers to support the licensing of electronic information. After reviewing selected principles of licensing issued by library associations and several standardized electronic license agreements, he identifies provisions in a typical agreement that should concern libraries and suggests certain arguments to use in negotiating terms more favorable to the library.


Empirical Evidence And Malpractice Litigation, Philip G. Peters Jr. Oct 2002

Empirical Evidence And Malpractice Litigation, Philip G. Peters Jr.

Faculty Publications

Critics of medical malpractice litigation believe that expert testimony is often anecdotal and biased. To remedy this problem, several have recently suggested that attorneys should provide and courts should seek reliable empirical evidence of actual clinical norms. Their suggestion should be welcomed. If our expectations are realistic and the design pitfalls are avoided, greater use of use of empirical research will improve the fairness of malpractice adjudication. At least in theory, it could be useful in both the "easy" cases (where it reveals that a consensus standard of care exists) and also some of the harder cases (where clinical practices …


The Composition Of Cosmic Rays At The Knee, S. P. Swordy, L. F. Fortson, J. Hinton, J. Hörandel, J. Knapp, C. L. Pryke, T. Shibata, S. P. Wakely, Z. Cao, M. L. Cherry, S. Coutu, J. Cronin, R. Engel, J. W. Fowler, K. H. Kampert, J. Kettler, D. B. Kieda, J. Matthews, S. A. Minnick, A. Moiseev, D. Muller, M. Roth, A. Sill, G. Spiczak Oct 2002

The Composition Of Cosmic Rays At The Knee, S. P. Swordy, L. F. Fortson, J. Hinton, J. Hörandel, J. Knapp, C. L. Pryke, T. Shibata, S. P. Wakely, Z. Cao, M. L. Cherry, S. Coutu, J. Cronin, R. Engel, J. W. Fowler, K. H. Kampert, J. Kettler, D. B. Kieda, J. Matthews, S. A. Minnick, A. Moiseev, D. Muller, M. Roth, A. Sill, G. Spiczak

Faculty Publications

The observation of a small change in spectral slope, or 'knee' in the fluxes of cosmic rays near energies 1015 eV has caused much speculation since its discovery over 40 years ago. The origin of this feature remains unknown. A small workshop to review some modern experimental measurements of this region was held at the Adler Planetarium in Chicago, USA in June 2000. This paper summarizes the results presented at this workshop and the discussion of their interpretation in the context of hadronic models of atmospheric air showers. © 2002 Elsevier Science B.V. All rights reserved.


Heca, A Member Of A Class Of Adhesins Produced By Diverse Pathogenic Bacteria, Contributes To The Attachment, Aggregation, Epidermal Cell Killing, And Virulence Phenotypes Of Erwinia Chrysanthemi Ec16 On Nicotiana Clevelandii Seedlings, Clemencia M. Rojas, Jong Hyun Ham, Wen Ling Deng, Jeff J. Doyle, Alan Collmer Oct 2002

Heca, A Member Of A Class Of Adhesins Produced By Diverse Pathogenic Bacteria, Contributes To The Attachment, Aggregation, Epidermal Cell Killing, And Virulence Phenotypes Of Erwinia Chrysanthemi Ec16 On Nicotiana Clevelandii Seedlings, Clemencia M. Rojas, Jong Hyun Ham, Wen Ling Deng, Jeff J. Doyle, Alan Collmer

Faculty Publications

Erwinia chrysanthemi is representative of a broad class of bacterial pathogens that are capable of inducing necrosis in plants. The E. chrysanthemi EC16 hecA gene predicts a 3,850-aa member of the Bordetella pertussis filamentous hemagglutinin family of adhesins. A hecA::Tn7 mutant was reduced in virulence on Nicotiana clevelandii seedlings after inoculation without wounding. Epifluorescence and confocal laser-scanning microscopy observations of hecA and wild-type cells expressing the green fluorescent protein revealed that the mutant is reduced in its ability to attach and then form aggregates on leaves and to cause an aggregate-associated killing of epidermal cells. Cell killing also depended on …


The Federalism-Rights Nexus: Explaining Why Senate Democrats Tolerate Rehnquist Court Decision Making But Not The Rehnquist Court, Neal Devins Oct 2002

The Federalism-Rights Nexus: Explaining Why Senate Democrats Tolerate Rehnquist Court Decision Making But Not The Rehnquist Court, Neal Devins

Faculty Publications

No abstract provided.


To What Extent Does The Power Of Government To Determine The Boundaries And Conditions Of Lawful Commerce Permit Government To Declare Who May Advertise And Who May Not?, William W. Van Alstyne Oct 2002

To What Extent Does The Power Of Government To Determine The Boundaries And Conditions Of Lawful Commerce Permit Government To Declare Who May Advertise And Who May Not?, William W. Van Alstyne

Faculty Publications

No abstract provided.


Between Law And Grace: Ritual And Ritual Studies In Recent Evangelical Thought, Gerald Klingbeil Oct 2002

Between Law And Grace: Ritual And Ritual Studies In Recent Evangelical Thought, Gerald Klingbeil

Faculty Publications

No abstract provided.


Transaction Costs Relating To Acquisition Or Enhancement Of Intangible Property: A Populist, Political, But Practical Perspective, John W. Lee Oct 2002

Transaction Costs Relating To Acquisition Or Enhancement Of Intangible Property: A Populist, Political, But Practical Perspective, John W. Lee

Faculty Publications

No abstract provided.


Drawing The Line Between Taxes And Takings: The Continuous Burdens Principle, And Its Broader Application, Eric Kades Oct 2002

Drawing The Line Between Taxes And Takings: The Continuous Burdens Principle, And Its Broader Application, Eric Kades

Faculty Publications

No abstract provided.


The End Of The Hudson Valley's Peculiar Institution: The Anti-Rent Movement's Politics, Social Relations, & Economics, Eric Kades Oct 2002

The End Of The Hudson Valley's Peculiar Institution: The Anti-Rent Movement's Politics, Social Relations, & Economics, Eric Kades

Faculty Publications

No abstract provided.


Bluetooth: An Emerging Technology For Wireless Personal Area Networks, Eric S. Hall, Charles D. Knutson, David K. Vawdrey Oct 2002

Bluetooth: An Emerging Technology For Wireless Personal Area Networks, Eric S. Hall, Charles D. Knutson, David K. Vawdrey

Faculty Publications

Look under your desk or behind your computer. See that rat’s nest of wires and cables? Almost every cable or wire that tethers us to our devices (or our devices to one another) is unnecessary. Bluetooth wireless technology promises to reduce the cabling chaos that afflicts us all. Bluetooth is a recently developed technology that uses radio frequency (RF) transceivers to provide point-to-multipoint wireless connectivity within a personal space. Bluetooth was designed for both voice and data communication at low per-unit costs while consuming little power. To achieve the cost and power goals, Bluetooth limits connectivity to a sphere of …


Direct Estimation Of Aboveground Forest Productivity Through Hyperspectral Remote Sensing Of Canopy Nitrogen, Marie-Louise Smith, Scott V. Ollinger, Mary E. Martin, John D. Aber, Richard A. Hallett, Christine L. Goodale Oct 2002

Direct Estimation Of Aboveground Forest Productivity Through Hyperspectral Remote Sensing Of Canopy Nitrogen, Marie-Louise Smith, Scott V. Ollinger, Mary E. Martin, John D. Aber, Richard A. Hallett, Christine L. Goodale

Faculty Publications

The concentration of nitrogen in foliage has been related to rates of net photosynthesis across a wide range of plant species and functional groups and thus represents a simple and biologically meaningful link between terrestrial cycles of carbon and nitrogen. Although foliar N is used by ecosystem models to predict rates of leaf‐level photosynthesis, it has rarely been examined as a direct scalar to stand‐level carbon gain. Establishment of such relationships would greatly simplify the nature of forest C and N linkages, enhancing our ability to derive estimates of forest productivity at landscape to regional scales. Here, we report on …


A Fourth Amendment "Search" In The Age Of Technology: Postmodern Perspectives, Kathryn R. Urbonya Oct 2002

A Fourth Amendment "Search" In The Age Of Technology: Postmodern Perspectives, Kathryn R. Urbonya

Faculty Publications

No abstract provided.


I Am/Was The Walrus, Daniel Beller-Mckenna Sep 2002

I Am/Was The Walrus, Daniel Beller-Mckenna

Faculty Publications

For most of his adult life, John Lennon fought to define himself against his public identity as "Beatle-:John." That image, crafted by the Beatles' manager Brian Epstein and the pop music industry became a burden to all four of the Beatles during the group's seven years of international star-dom. In place of the rough leather-clad rock and roll band that played rambling one hour sets in the Hamburg Kaiserkeller and the Liverpool Cavern Club during 1960-61, Epstein forged a more commercially viable group of four well (and uniformly) dressed young men whose stage act was reduced to twenty minute carefully …


The Rhetoric And Promises Of Accountability (Lecture), Melvin J. Dubnick Sep 2002

The Rhetoric And Promises Of Accountability (Lecture), Melvin J. Dubnick

Faculty Publications

This document discusses the conceptual challenges, historical roots, and cultural ambiguities of the term “accountability” and advocates for its careful reexamination and preservation in modern governance.