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 41431 - 41460 of 45722

Full-Text Articles in Entire DC Network

The Limits Of Quantitative Legal Analyses: Chaos In Legal Scholarship And Fdic V. W.R. Grace & Co., Royce De R. Barondes Oct 1995

The Limits Of Quantitative Legal Analyses: Chaos In Legal Scholarship And Fdic V. W.R. Grace & Co., Royce De R. Barondes

Faculty Publications

This Article identifies a few of those techniques by examining a number of quasi-quantitative legal analyses that have addressed a range of legal relationships. The methodology of this Article consists of reviewing the relationship between those legal analyses and their associated non-legal disciplines. The unifying theme of the discussed examples is that a useful, well constructed quantitative analysis or approach has been improperly extended into a legal context.

Go to article

Dean John Wade And The Law Of Torts, Gary Myers Oct 1995

Dean John Wade And The Law Of Torts, Gary Myers

Faculty Publications

Dean John Wade's death last year ends the career of a great scholar, teacher, and administrator. His many accomplishments and his impressive personal traits have been duly praised and chronicled. His legacy includes an impressive body of scholarly work, many former students trained in the ways of the law, and institutions that are better for his walking their hallways. This article focuses on one particular aspect of Dean Wade's contribution--his impact on the law of torts.

Go to article

The Criminal Defense Lawyer As Effective Negotiator: A Systemic Approach, Rodney J. Uphoff Oct 1995

The Criminal Defense Lawyer As Effective Negotiator: A Systemic Approach, Rodney J. Uphoff

Faculty Publications

In the first issue of the Clinical Law Review, Peter Hoffman challenged clinical legal educators to produce clinical scholarship that is “practical in its orientation and design” and written so as to enhance the ability of lawyers to represent their clients and to help law students prepare for law practice. This article takes up Hoffman's challenge in the context of examining the skill of negotiating or plea bargaining from the perspective of the criminal defense lawyer. Before discussing the methods, approach or techniques that lawyers can use to enhance their ability to bargain effectively, it is critical to understand what …

Go to article

Remark: Brown V. Board: Revisited, Michael A. Middleton Oct 1995

Remark: Brown V. Board: Revisited, Michael A. Middleton

Faculty Publications

[T]he Negro needs neither segregated schools nor mixed schools. What he needs is Education. What he must remember is that there is no magic, either in mixed schools or in segregated schools. A mixed school with poor and unsympathetic teachers, with hostile public opinion, and no teaching of truth concerning black folk, is bad. A segregated school with ignorant placeholders, inadequate equipment, poor salaries, and wretched housing, is equally bad. Other things being equal, the mixed school is the broader, more natural basis for the education of all youth. It gives wider contacts; it inspires greater self-confidence; and suppresses the …

Go to article

An Historical Critique Of The Emergence And Evolution Of Ernesto Che Guevara's Foco Theory, Matt D. Childs Oct 1995

An Historical Critique Of The Emergence And Evolution Of Ernesto Che Guevara's Foco Theory, Matt D. Childs

Faculty Publications

This article provides an analysis of Ernesto Che Guevara's theory of guerrilla warfare, the foco. The numerous changes to the originalfoco thesis, as presented in Guerrilla Warfare (1960), are examined in detail covering two dozen articles, speeches, essays, interviews and books authored by Guevara, Castro and Debray while stressing their relation to national and international politics. The author argues that there was an apparent discourse between Cuban politics and the numerous changes in Guevara's writings. Juxtaposing changes to the foco theory from 1960 to 1967, to Cuban historical events, reflects the political expedience of the 196os and the primary …

Go to article

Structure Factors Of Binary Fluids In A Dilute Gel, J.C. Lee Oct 1995

Structure Factors Of Binary Fluids In A Dilute Gel, J.C. Lee

Faculty Publications

The statio and dynamic structure factors of binary fluids in a dilute gel are computed using a two-dimensional kinetic Ising model. The wetting effect of the gel strands is modeled with ''gel atoms'' which are distributed randomly among the spins and impose a field on their neighboring spins, all in the same direction. The result for the static structure factor shows the presence of adsorption clusters which mask the gel atoms. The result for the dynamic Structure factor shows an extremely slow relaxation-at late times which cannot be fitted in the form of the activated dynamic scaling known for random-field …

Go to article

Assessing Fundamental Power Differences In Exchange Networks: Iterative Gpi, Michael J. Lovaglia, John Skvoretz, Barry N. Markovsky, David Willer Oct 1995

Assessing Fundamental Power Differences In Exchange Networks: Iterative Gpi, Michael J. Lovaglia, John Skvoretz, Barry N. Markovsky, David Willer

Faculty Publications

Networks have been discovered for which Network Exchange Theory (NET Markovsky, Willer and Patton 1988; Lovaglia, Skvoretz, Willer and Markovsky 1995) fails to provide tenable predictions. Here we elaborate NET to create a more general method. We show not only when and where exchange networks break into simpler substructures, but propose rules to decisively classify networks and substructures as strong, weak, or equal power. In doing so, we advance general heuristics for power development in exchange networks and demonstrate the promise of an approach using reciprocal comparison of general heuristics, formal theory, and computer simulation.

Go to article

A Response To Professor Vernellia R. Randall's The Myers-Briggs Type Indicator, First Year Law Students And Performance, Cynthia V. Ward Oct 1995

A Response To Professor Vernellia R. Randall's The Myers-Briggs Type Indicator, First Year Law Students And Performance, Cynthia V. Ward

Faculty Publications

No abstract provided.

Go to article

Biblical Interpretation And Moral Authority, Miroslav Kis Oct 1995

Biblical Interpretation And Moral Authority, Miroslav Kis

Faculty Publications

No abstract provided.

Go to article

An Adaptive Learning Model Which Accommodates Asymmetric Error Costs And Choice-Based Samples, James V. Hansen, James B. Mcdonald, Rayman D. Meservy Oct 1995

An Adaptive Learning Model Which Accommodates Asymmetric Error Costs And Choice-Based Samples, James V. Hansen, James B. Mcdonald, Rayman D. Meservy

Faculty Publications

This paper introduces an adaptive-learning model, EGB2, which optimizes over a parameter space to fit data to a family of models based on maximum-likelihood criteria. We also show how EGB2 can be modified to handle asymmetric costs of Type I and Type II errors, thereby minimizing misclassification costs. It has been shown that standard methods of computing maximum-likelihood estimators of qualitative-response models are generally inconsistent when applied to sample data with different proportions than found in the universe from which the sample is drawn. We investigate how a choice estimator, based on weighting each observation's contribution to the log-likelihood function, …

Go to article

A Provably Convergent Dynamic Training Method For Multi-Layer Perceptron Networks, Timothy L. Andersen, Tony R. Martinez Sep 1995

A Provably Convergent Dynamic Training Method For Multi-Layer Perceptron Networks, Timothy L. Andersen, Tony R. Martinez

Faculty Publications

This paper presents a new method for training multi-layer perceptron networks called DMP1 (Dynamic Multilayer Perceptron 1). The method is based upon a divide and conquer approach which builds networks in the form of binary trees, dynamically allocating nodes and layers as needed. The individual nodes of the network are trained using a genetic algorithm. The method is capable of handling real-valued inputs and a proof is given concerning its convergence properties of the basic model. Simulation results show that DMP1 performs favorably in comparison with other learning algorithms.

Go to article

Millisecond Pulsars: Detectable Sources Of Continuous Gravitational Waves?, Kimberly C.B. New, G. Chanmugam, Warren W. Johnson, Joel E. Tohline Sep 1995

Millisecond Pulsars: Detectable Sources Of Continuous Gravitational Waves?, Kimberly C.B. New, G. Chanmugam, Warren W. Johnson, Joel E. Tohline

Faculty Publications

Laboratory searches for the detection of gravitational waves have focused on the detection of burst signals emitted during a supernova explosion but have not resulted in any confirmed detections. An alternative approach has been to search for continuous wave (CW) gravitational radiation from the Crab pulsar. In this paper, we examine the possibility of detecting CW gravitational radiation from pulsars and show that nearby millisecond pulsars are generally much better candidates. We show that the minimum strain hc ∼ 10-26 that can be detected by tuning an antenna to the frequency of the millisecond pulsar PSR 1957+20, with the detector …

Go to article

Pattern Of Disease After Murine Hepatitis Virus Strain 3 Infection Correlates With Macrophage Activation And Not Viral Replication, M. Pope, O. Rotstein, E. Cole, S. Sinclair, Rebecca D. Parr, B. Cruz, R. Fingerote, S. Chung, R. Gorczynski, L. Fung, J. Leibowitz, Y. S. Rao, G. Levy Sep 1995

Pattern Of Disease After Murine Hepatitis Virus Strain 3 Infection Correlates With Macrophage Activation And Not Viral Replication, M. Pope, O. Rotstein, E. Cole, S. Sinclair, Rebecca D. Parr, B. Cruz, R. Fingerote, S. Chung, R. Gorczynski, L. Fung, J. Leibowitz, Y. S. Rao, G. Levy

Faculty Publications

Murine hepatitis virus strain (MHV-3) produces a strain-dependent pattern of disease which has been used as a model for fulminant viral hepatitis. This study was undertaken to examine whether there was a correlation between macrophage activation and susceptibility or resistance to MHV-3 infection. Peritoneal macrophages were isolated from resistant A/J and susceptible BALB/cJ mice and, following stimulation with MHV-3 or lipopolysaccharide (LPS), analyzed for transcription of mRNA and production of interleukin-1 (IL-1), tumor necrosis factor alpha (TNF-alpha), transforming growth factor beta (TGF-beta), mouse fibrinogen-like protein (musfiblp), tissue factor (TF), leukotriene B4, and prostaglandin E2 (PGE2). Macrophages from BALB/cJ mice produced …

Go to article

Territorial Ambition: Land And Society In Arkansas, 1800-1840 - Bolton, Sc, John D. W. Guice Sep 1995

Territorial Ambition: Land And Society In Arkansas, 1800-1840 - Bolton, Sc, John D. W. Guice

Faculty Publications

No abstract provided.

Go to article

Towards A Payments System Law For Developing And Transition Economies, Raj Bhala Sep 1995

Towards A Payments System Law For Developing And Transition Economies, Raj Bhala

Faculty Publications

This paper examines the legal foundations of large-value credit transfer systems and the importance of certainty, efficiency, and fairness in funds transfer law. A case study is presented to highlight key terminology and concepts. Thereafter, five particularly noteworthy legal rules are discussed in the context of the case study: (1) a rule defining the scope of the law; (2) a rule establishing when the rights and obligations of parties to a funds transfer are triggered; (3) a receiver finality rule; (4) a rule assigning liability for interloper fraud; and (5) a money-back guarantee rule, coupled with provisions on discharge. Finally, …

Go to article

Traffic Control For Automated Highway Systems: A Conceptual Framework, H.-S. Jacob Tsao Sep 1995

Traffic Control For Automated Highway Systems: A Conceptual Framework, H.-S. Jacob Tsao

Faculty Publications

This paper proposes a conceptual framework for designing a traffic control scheme. It adopts a top-down approach to defining major design steps starting with high-level feature definition. With the desired features defined, the top-down approach then identifies and defines moves and related planning and movement functions that are required for supporting the desired features. The paper takes a systems view and identifies the safety issues regarding the movement coordination of the large number of vehicles on an Automated Highway System (AHS).

Go to article

A Pixel Scale Digital-To-Analog Converter Array For Liquid Crystal On Vlsi Displays, Gregory P. Nordin, S. T. Kowel, J. H. Kulick, R. G. Lindquist, P. J. Nasiatka, A. Thomsen Sep 1995

A Pixel Scale Digital-To-Analog Converter Array For Liquid Crystal On Vlsi Displays, Gregory P. Nordin, S. T. Kowel, J. H. Kulick, R. G. Lindquist, P. J. Nasiatka, A. Thomsen

Faculty Publications

A pixel scale digital to analog converter and driver for liquid crystal (LC) cells is presented. The circuit is a compact CMOS logic gate that sums pulse density modulation (pdm) signals. Low pass filtering of the pdm signal is 'done by the LC material. The circuit is suitable to implement large arrays of converters as, for example, in display applications. It is applicable in LC on silicon displays where gray scale data are stored and converted at each pixel site. Advantages over the commonly used active matrix technology include the removal of all analog circuitry, no need for refresh, reduced …

Go to article

Exclusive Ρ0 Production In Deep Inelastic Electron-Proton Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, C. Nemoz Aug 1995

Exclusive Ρ0 Production In Deep Inelastic Electron-Proton Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, C. Nemoz

Faculty Publications

The exclusive production of ρ{variant}0mesons in deep inelastic electron-proton scattering has been studied using the ZEUS detector. Cross sections have been measured in the range 7 < Q2< 25 GeV2for λ*p centre of mass (c.m.) energies 40 to 130 GeV. The λ*p → ρ{variant}0p cross section exhibits a Q-(4.2±0.8-0.5+1.4)dependence and both longitudinally and transversely polarised ρ{variant}0's are observed. The λ*p → ρ{variant}0p cross section rises strongly with increasing c.m. energy, when compared with NMC data at lower energy, which cannot be explained by production through soft pomeron exchange. The data are compared with perturbative QCD calculations where the rise in the cross section reflects the increase in the gluon density at low x. © 1995.

Go to article

Diffractive Hard Photoproduction At Hera And Evidence For The Gluon Content Of The Pomeron, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, C. Nemoz Aug 1995

Diffractive Hard Photoproduction At Hera And Evidence For The Gluon Content Of The Pomeron, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, C. Nemoz

Faculty Publications

Inclusive jet cross sections for events with a large rapidity gap with respect to the proton direction from the reaction ep → jet + X with quasi-real photons have been measured with the ZEUS detector. The cross sections refer to jets with transverse energies ETjet> 8 GeV. The data show the characteristics of a diffractive process mediated by pomeron exchange. Assuming that the events are due to the exchange of a pomeron with partonic structure, the quark and gluon content of the pomeron is probed at a scale ∼ (ETjet)2. A comparison of the measurements with model predictions based on …

Go to article

Is There A Connection Between No-Hair Behavior And Universality In Gravitational Collapse?, Jorge Pullin Aug 1995

Is There A Connection Between No-Hair Behavior And Universality In Gravitational Collapse?, Jorge Pullin

Faculty Publications

We apply linear perturbation theory to the study of the universality and criticality first observed by Choptuik in gravitational collapse. Since these are essentially nonlinear phenomena our approach provides a rough approximation. In spite of this, universal behavior of the final black hole mass is observed with an exponent only slightly higher than the observed value of 0.367. The universal behavior is based on the unique form that in-falling perturbations on black holes have at the horizon. © 1995.

Go to article

Ultrastructural Immunolocalization Of Histones (H2b, H3, H4), Transition Protein (Tp1) And Protamine In Rabbit Spermatids And Spermatozoa Nuclei. Relation To Condensation Of The Chromatin, J L. Courtens, Wilson Stephen Kistler, L Plöen Aug 1995

Ultrastructural Immunolocalization Of Histones (H2b, H3, H4), Transition Protein (Tp1) And Protamine In Rabbit Spermatids And Spermatozoa Nuclei. Relation To Condensation Of The Chromatin, J L. Courtens, Wilson Stephen Kistler, L Plöen

Faculty Publications

The histones H2B, H3 and H4, the transition protein TP1 and protamine were localised using ultrastructural immunocytochemistry in nuclei of rabbit spermatids and spermatozoa. Histones are present in round spermatid nuclei and are lost during the elongation of nuclei. TP1 and protamine appear simultaneously in all nuclei during this period. TP1 is located at the periphery of chromatin cords, while protamine seems to be located at random in the same cords. TP1 is lost in most elongated sprematids during step 13 of spermiogenesis, and the protamine stays in all sperm nuclei. TP1 remains persent in some old spermatids and ejaculated …

Go to article

Geodemographic Approaches To Identifying U.S. Furniture Markets, Frank M. Howell, Larry Doolittle, Jarryl B. Ritchie, Melissa A. Barfield, Steven H. Bullard Aug 1995

Geodemographic Approaches To Identifying U.S. Furniture Markets, Frank M. Howell, Larry Doolittle, Jarryl B. Ritchie, Melissa A. Barfield, Steven H. Bullard

Faculty Publications

Demand for household furniture is shaped by a multitude of dynamic forces, from the global economic situation to subtle changes in consumer preferences. Correspondingly, the academic disciplines employed to identify, analyze, and predict these forces range from macroeconomics to psychology, and include demography, sociology, geography, and several applied fields. The demographic characteristics of furniture consumers has been a particularly popular area of research, primarily because of the availability of secondary data from various public · agencies. Some of this research is reviewed in a subsequent section of this report.

Go to article

Latin American Urbanization: Historical Profiles Of Major Cities, By Gerard Michael Greenfield, Michael C. Scardaville Aug 1995

Latin American Urbanization: Historical Profiles Of Major Cities, By Gerard Michael Greenfield, Michael C. Scardaville

Faculty Publications

A review of Latin American Urbanization: Historical Profiles of Major Cities, by Gerard Michael Greenfield

Go to article

Islam, The People And The State: Essays On Political Ideas And Movements In The Middle East, By Sami Zubaida, Shahrough Akhavi Aug 1995

Islam, The People And The State: Essays On Political Ideas And Movements In The Middle East, By Sami Zubaida, Shahrough Akhavi

Faculty Publications

No abstract provided.

Go to article

An Integrated Framework For Learning And Reasoning, Christophe G. Giraud-Carrier, Tony R. Martinez Aug 1995

An Integrated Framework For Learning And Reasoning, Christophe G. Giraud-Carrier, Tony R. Martinez

Faculty Publications

Learning and reasoning are both aspects of what is considered to be intelligence. Their studies within AI have been separated historically, learning being the topic of machine learning and neural networks, and reasoning falling under classical (or symbolic) AI. However, learning and reasoning are in many ways interdependent. This paper discusses the nature of some of these interdependencies and proposes a general framework called FLARE, that combines inductive learning using prior knowledge together with reasoning in a propositional setting. Several examples that test the framework are presented, including classical induction, many important reasoning protocols and two simple expert systems.

Go to article

Electromagnetic Boundary Conditions And Differential Forms, Karl F. Warnick, Richard H. Selfridge, David V. Arnold Aug 1995

Electromagnetic Boundary Conditions And Differential Forms, Karl F. Warnick, Richard H. Selfridge, David V. Arnold

Faculty Publications

A new representation for electromagnetic boundary conditions involving a boundary projection operator defined using the interior and exterior products of the calculus of differential forms is developed. This operator expresses boundary conditions for fields represented by differential forms of arbitrary degree. With vector analysis, the field intensity boundary conditions require the cross product, whereas the flux boundary conditions use the inner product. With differential forms, the field intensity and flux density boundary conditions are expressed using a single operator. This boundary projection operator is readily applied in practice, so that this work extends the utility of the calculus of differential …

Go to article

Surface Intersection Loop Destruction, Thomas W. Sederberg, Alan K. Zundel Jul 1995

Surface Intersection Loop Destruction, Thomas W. Sederberg, Alan K. Zundel

Faculty Publications

The intersection curve between two surface patches consists of one or more connected components or branches. Each component can be classified as either an open branch, with endpoints on at least one patch boundary, or as a closed loop.

Go to article

Impacts Of Seasonality And Nutrients On Microbial Mat Community Structure And Function, James L. Pinckney, Hans W. Paerl, M. Fitzpatrick Jul 1995

Impacts Of Seasonality And Nutrients On Microbial Mat Community Structure And Function, James L. Pinckney, Hans W. Paerl, M. Fitzpatrick

Faculty Publications

To understand the mechanisms responsible for seasonal fluctuations in growth and N2 fixation in intertidal microbial mat communities, we quantified seasonal changes in mat community composition, related these changes to diel and seasonal N2 fixation rates, and evaluated community responses (growth, N2fixation, composition) to long-term (22 d) nutrient addition bioassays. A temperate intertidal cyanobacterial mat community, located in coastal North Carolina, USA, was sampled at monthly intervals for 1 yr (1993-94) to determine changes in community composition. The abundances of major phototrophic groups were quantified based on the relative concentrations of taxaspecific photopigments (chlorophylls and carotenoids). …

Go to article

The Kinetics Of Quantal Transmitter Release From Retinal Amacrine Cells, Salvador Borges, Evanna Gleason, Michael Turelli, Martin Wilson Jul 1995

The Kinetics Of Quantal Transmitter Release From Retinal Amacrine Cells, Salvador Borges, Evanna Gleason, Michael Turelli, Martin Wilson

Faculty Publications

Exocytosis of transmitter at most synapses is a very fast process triggered by the entry of Ca2+ during an action potential. A reasonable expectation is that the fast step of exocytosis is followed by slow steps readying another vesicle for exocytosis but the identity and kinetics of these steps are presently unclear. By voltage clamping both pre- and postsynaptic neurons in an isolated pair of retinal amacrine cells, we have measured evoked synaptic currents and responses to single vesicles of transmitter (minis). From these currents, we have computed the rate of exocytosis during a sustained presynaptic depolarization. We show here …

Go to article

Study Of The Photon Remnant In Resolved Photoproduction At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, C. Nemoz Jul 1995

Study Of The Photon Remnant In Resolved Photoproduction At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, C. Nemoz

Faculty Publications

Photoproduction at HERA is studied in ep collisions, with the ZEUS detector, for γp centre-of-mass energies ranging from 130-270 GeV. A sample of events with two high-pT jets (pT > 6 GeV, η < 1.6) and a third cluster in the approximate direction of the electron beam is isolated using a clustering algorithm. These events are mostly due to resolved photoproduction. The third cluster is identified as the photon remnant. Its properties, such as the transverse and longitudinal energy flows around the axis of the cluster, are consistent with those commonly attributed to jets, and in particular with those found for the two jets in these events. The mean value of the photon remnant pT with respect to the beam axis is measured to be 2.1 ± 0.2 GeV, which demonstrates substantial mean transverse momenta for the photon remnant. © 1995.

Go to article

First Prev Next Last