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Anisotropic Thermodynamics Of (Formula Presented)-Wave Superconductors In The Vortex State, I. Vekhter Jan 1999

Anisotropic Thermodynamics Of (Formula Presented)-Wave Superconductors In The Vortex State, I. Vekhter

Faculty Publications

We show that the density of states and the thermodynamic properties of a two-dimensional (Formula presented)-wave superconductor in the vortex state with applied magnetic field H in the plane depend on the angle between H and the order-parameter nodes. Within a semiclassical treatment of the extended quasiparticle states, we obtain fourfold oscillations of the specific heat, measurement of which provides a simple probe of gap symmetry. The frequency dependence of the density of states and the temperature dependence of thermodynamic properties obey different power laws for field in the nodal and antinodal direction. The fourfold pattern is changed to twofold …

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Quasiparticle Thermal Conductivity In The Vortex State Of High- Tccuprates, I. Vekhter, A. Houghton Jan 1999

Quasiparticle Thermal Conductivity In The Vortex State Of High- Tccuprates, I. Vekhter, A. Houghton

Faculty Publications

We present the results of a microscopic calculation of the longitudinal thermal conductivity, κxx, of a d-wave superconductor in the mixed state. Our results show an increase in the thermal conductivity with the applied field at low temperatures and a decrease followed by a nearly field independent κxx(H) at higher temperatures, in qualitative agreement with the experimental results. We discuss the relationship between the slope of the superconducting gap and the plateau in κxx(H). © 1999 The American Physical Society.

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Quasiparticle Transport In The Vortex State Of D-Wave Superconductors, I. Vekhter Jan 1999

Quasiparticle Transport In The Vortex State Of D-Wave Superconductors, I. Vekhter

Faculty Publications

We calculate the magnetic field and temperature dependence of the Raman response, superfluid density, and the NMR relaxation rate in the vortex state of a d-wave superconductor arising from the Doppler energy shift of extended quasiparticle states. Our results are valid both at low temperatures, where we observe scaling with variable (Formula presented) and obtain an explicit form of the scaling functions, and beyond this region. We derive a universal frequency-dependent scaling relation for the Raman intensity, and discuss the breakdown of the single relaxation rate approach to the NMR response. © 1999 The American Physical Society.

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Spatiotemporal Separation Of High Harmonic Radiation Into Two Quantum Path Components, M. B. Gaarde, F. Salin, E. Constant, Ph Balcou, K. J. Schafer, K. C. Kulander, A. L’Huillier Jan 1999

Spatiotemporal Separation Of High Harmonic Radiation Into Two Quantum Path Components, M. B. Gaarde, F. Salin, E. Constant, Ph Balcou, K. J. Schafer, K. C. Kulander, A. L’Huillier

Faculty Publications

We present a spatiotemporal analysis of high harmonic generation, showing evidence for the presence of several quantum path contributions to the atomic dipole moment. We show that the harmonic radiation can largely be described as a sum of two fields having a phase proportional to the intensity of the generating field. We compare our results to recent experimental results demonstrating this separation [M. Bellini et al., Phys. Rev. Lett. 81, 297 (1998)]. We show how the temporal and spatial coherence properties are influenced by this effect, and discuss how it could be used to obtain better control of the generated …

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Complementation Of Conjugation Functions Of Streptomyces Lividans Plasmid Pij101 By The Related Streptomyces Plasmid Psb24.2, Gregg S. Pettis, Shubha Prakash Jan 1999

Complementation Of Conjugation Functions Of Streptomyces Lividans Plasmid Pij101 By The Related Streptomyces Plasmid Psb24.2, Gregg S. Pettis, Shubha Prakash

Faculty Publications

A database search revealed extensive sequence similarity between Streptomyces lividans plasmid pIJ101 and Streptomyces plasmid pSB24.2, which is a deletion derivative of Streptomyces cyanogenus plasmid pSB24.1. The high degree of relatedness between the two plasmids allowed the construction of a genetic map of pSB24.2, consisting of putative transfer and replication loci. Two pSB24.2 loci, namely, the cis-acting locus for transfer (clt) and the transfer-associated korB gene, were shown to be capable of complementing the pIJ101 clt and korB functions, respectively, a result that is consistent with the notion that pIJ101 and the parental plasmid pSB24.1 encode highly similar, if not …

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Rapid Evolution Of Fertilization Selectivity And Lysin Cdna Sequences In Teguline Gastropods, Michael E. Hellberg, Victor D. Vacquier Jan 1999

Rapid Evolution Of Fertilization Selectivity And Lysin Cdna Sequences In Teguline Gastropods, Michael E. Hellberg, Victor D. Vacquier

Faculty Publications

Proteins mediating intercellular recognition face opposing selective forces as they evolve: purifying selection to maintain function, and diversifying selection to alter specificity. Lysin is a 16-kDa protein which enables sperm of free-spawning marine snails to make a hole in the vitelline layer (VE) surrounding conspecific eggs. Previous work on abalone (Haliotis spp.) has shown that positive selection promotes rapid interspecific divergence of lysin. Here, we present data on the specificity of VE dissolution by four species of teguline gastropods, along with lysin cDNA sequences. The teguline and abalone lineages diverged over 250 MYA. As in abalone, VE dissolution by lysin …

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Abdominal Adiposity In Six Populations Of West African Descent: Prevalence And Population Attributable Fraction Of Hypertension, Ike S. Okosun, Terrence E. Forrester, Charles N. Rotimi, Babatunde O. Osotimehin, Walinjom F. Muna, Richard S. Cooper Jan 1999

Abdominal Adiposity In Six Populations Of West African Descent: Prevalence And Population Attributable Fraction Of Hypertension, Ike S. Okosun, Terrence E. Forrester, Charles N. Rotimi, Babatunde O. Osotimehin, Walinjom F. Muna, Richard S. Cooper

Faculty Publications

Objectives: The objective of this investigation was to examine the prevalence of abdominal adiposity and its association with the prevalence of hypertension among African descent populations in Nigeria, Cameroon, Jamaica, St. Lucia, Barbados, and the United States (US). Research Method: The data for this investigation were obtained from the International Collaborative Study on Hypertension in Blacks. Hypertension was defined as mean diastolic blood pressure ≥90 mmHg, systolic blood pressure ≥140 mmHg or current treatment with prescribed antihypertension medication. Abdominal overweight was defined as waist circumference (WC) ≥94 and ≥80 cm for men and women, respectively. Abdominal obesity was defined as …

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Statistical Prediction Based On Censored Life Data, Luis A. Escobar, William Q. Meeker Jan 1999

Statistical Prediction Based On Censored Life Data, Luis A. Escobar, William Q. Meeker

Faculty Publications

This article describes methods for using censored life data to construct prediction bounds or intervals for future outcomes. Both new-sample prediction (e.g., using data from a previous sample to make predictions on the future failure time of a new unit) and within-sample prediction problems (e.g., predicting the number of future failures from a sample, based on early data from that sample) are considered. The general method, based on an assumed parametric distribution, uses simulationbased calibration. This method provides exactly the nominal coverage probability when an exact pivotal-based method exists and a highly accurate large-sample approximation, otherwise. To illustrate new-sample prediction, …

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Studying The Importance Of Hurricanes To The Northern Gulf Of Mexico Coast, Gregory W. Stone, Ping Wang, David A. Pepper, John M. Grymes, Harry H. Roberts, Xiongping Zhang, S. A. Hsu, Oscar K. Huh Jan 1999

Studying The Importance Of Hurricanes To The Northern Gulf Of Mexico Coast, Gregory W. Stone, Ping Wang, David A. Pepper, John M. Grymes, Harry H. Roberts, Xiongping Zhang, S. A. Hsu, Oscar K. Huh

Faculty Publications

No abstract provided.

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Balancing Domain Decomposition For Nonconforming Plate Elements, Susanne C. Brenner, Li Yeng Sung Jan 1999

Balancing Domain Decomposition For Nonconforming Plate Elements, Susanne C. Brenner, Li Yeng Sung

Faculty Publications

In this paper the balancing domain decomposition method is extended to nonconforming plate elements. The condition number of the preconditioned system is shown to be bounded by C[1 + ln(H/h)] , where H measures the diameters of the subdomains, h is the mesh size of the triangulation, and the constant C is independent of H, h and the number of subdomains. 2

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Certification In Honduras: Perspectives Of Wood Product Manufacturers, Consumers, Ngos And Government Forest Policymakers, Richard P. Vlosky, Juan Antonio Aguirre, Edna Carolina Soihet Montes, Lucie K. Ozanne, Gabriela Silva Jan 1999

Certification In Honduras: Perspectives Of Wood Product Manufacturers, Consumers, Ngos And Government Forest Policymakers, Richard P. Vlosky, Juan Antonio Aguirre, Edna Carolina Soihet Montes, Lucie K. Ozanne, Gabriela Silva

Faculty Publications

Although research has been conducted that examines certification issues from stakeholder perspectives in temperate forest regions, very little has been done in tropical supplier countries. This study identifies key certification issues in Honduras, a Central American producer and exporter of forest products. Five stakeholder groups were studied: primary wood products manufacturers, secondary manufacturers, government forestry policymakers, non-governmental organizations and consumers. Results indicate that there a general lack of awareness about certification, an increasing willingness-to-pay for certification as one moves from the forest to the consumer, the need for transparency in the process, and the belief that certification should be conducted …

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Sweetpotato Clone Tolerance To Weed Interference, Don R. La Bonte, Howard F. Harrison, Carl E. Motsenbocker Jan 1999

Sweetpotato Clone Tolerance To Weed Interference, Don R. La Bonte, Howard F. Harrison, Carl E. Motsenbocker

Faculty Publications

Field experiments were conducted to assess how sweetpotato [Ipomoea batatas (L.) Lam.] clones interfere with weeds and how clones tolerate weed interference. Eleven clones with architecturally different canopies were evaluated for yield, canopy surface area and dry mass, weed dry mass, and light interception at ground level. A 2-fold difference in ground area covered by canopy surface area was observed among the eleven clones 42 days after planting, and a 3-fold difference in canopy dry mass at harvest. Yields were reduced from 14% to 68% by weed interference. The yields of high-yielding clones, 'Beauregard', 'Excel', L87-125, 'Regal', 'Centennial', and W-274, …

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Preparation Of Mesoporous Tin Oxide For Electrochemical Applications, Fanglin Chen, Meilin Liu Jan 1999

Preparation Of Mesoporous Tin Oxide For Electrochemical Applications, Fanglin Chen, Meilin Liu

Faculty Publications

Mesoporous tin oxide stable up to 500 °C has been prepared for the first time using both cationic and neutral surfactants.

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Policy And Science: A Review Essay Of Wilson’S Consilience: The Unity Of Knowledge, Thomas E. Geu Jan 1999

Policy And Science: A Review Essay Of Wilson’S Consilience: The Unity Of Knowledge, Thomas E. Geu

Faculty Publications

No abstract provided.

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Propositions For Information Technology: Planning For Success, Ken Haycock, G. Jopson Jan 1999

Propositions For Information Technology: Planning For Success, Ken Haycock, G. Jopson

Faculty Publications

In Canada, the West Vancouver School Board proposed 13 propositions about the selection, management, and effective use of information technology. For each proposition, the senior management included a full outline of the current status, a plan of action, the name of the staff member responsible, and a time line. An external assessment of implementation of each proposition and of the impact on achievement was undertaken. The propositions, clustered in the areas of vision, statement of beliefs, student learning goals, definition, social issues, learning issues, clarification of roles and responsibilities, integration of information delivery systems, community-based information infrastructure, and assessment, are …

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Clear And Present Danger: Enforcing The International Ban On Biological And Chemical Weapons Through Sanctions, Use Of Force, And Criminalization, Michael P. Scharf Jan 1999

Clear And Present Danger: Enforcing The International Ban On Biological And Chemical Weapons Through Sanctions, Use Of Force, And Criminalization, Michael P. Scharf

Faculty Publications

Currently there are two means of enforcing the international prohibition of chemical and biological weapons. First, the international community can induce compliance through imposition of sanctions, such as trade embargoes, freezing of assets and diplomatic isolation. Second, when sanctions fail, States can individually or collectively respond to the threat of chemical or biological weapons by using military force. After exploring the potential strengths and weaknesses of these approaches, this article examines the desirability of supplementing them with a third approach based on the criminal prosecution of persons responsible for the production, stockpiling, transfer, or use of chemical and biological weapons.

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Mothers And Doctors' Orders: Unmasking The Doctor's Fiduciary Role In Maternal-Fetal Conflicts, Michelle Oberman Jan 1999

Mothers And Doctors' Orders: Unmasking The Doctor's Fiduciary Role In Maternal-Fetal Conflicts, Michelle Oberman

Faculty Publications

This article reframes the contemporary legal and ethical debates generated by pregnant women who resist medical advice. Presently known as "maternal-fetal conflicts," these dilemmas arise in contexts ranging from religious refusals of blood transfusions to cocaine addiction. The vast literature discussing these conflicts focuses entirely on the competing rights of mothers and fetuses, and overwhelmingly concludes that the mother's rights prevail. Entirely absent from this analysis is one of the primary parties to these conflicts - the doctor. As a result, the doctor's role in generating these conflicts is eclipsed, and one scarcely notices that these scenarios all are linked …

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Who Is The Lawyer Of The Century?, Gerald F. Uelmen Jan 1999

Who Is The Lawyer Of The Century?, Gerald F. Uelmen

Faculty Publications

No abstract provided.

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Evaulating Bankruptcy Mediation, William J. Woodward Jr. Jan 1999

Evaulating Bankruptcy Mediation, William J. Woodward Jr.

Faculty Publications

No abstract provided.

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Making The "White Man's Country" White: Race, Slavery, And State-Building In The Jacksonian South, Lacy K. Ford, Jr. Jan 1999

Making The "White Man's Country" White: Race, Slavery, And State-Building In The Jacksonian South, Lacy K. Ford, Jr.

Faculty Publications

No abstract provided.

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Call Screening - Is It Really A Problem For Survey Research?, Michael W. Link, Robert W. Oldendick Jan 1999

Call Screening - Is It Really A Problem For Survey Research?, Michael W. Link, Robert W. Oldendick

Faculty Publications

No abstract provided.

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How Children In Cults May Use Emancipation Laws To Free Themselves, Robin A. Boyle Jan 1999

How Children In Cults May Use Emancipation Laws To Free Themselves, Robin A. Boyle

Faculty Publications

The author examines how children who are born into cults or brought into them at a young age can use state emancipation laws to gain independence when they are in their mid-teens, so long as they can demonstrate criteria that their states have established. Commonly, states require a showing that the minor has achieved some level of economic self-sufficiency and can live emotionally and physically independently from his or her parents. There are some difficulties for cultic children in demonstrating these criteria, but the obstacles are not insurmountable.

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Database Protection In A Digital World, Mary Maureen Brown, Robert M. Bryan, John M. Conley Jan 1999

Database Protection In A Digital World, Mary Maureen Brown, Robert M. Bryan, John M. Conley

Faculty Publications

No abstract provided.

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I/O-Conscious Tiling For Disk-Resident Data Sets, Mahmut Kandemir, Alok Choudhary, J. Ramanujam Jan 1999

I/O-Conscious Tiling For Disk-Resident Data Sets, Mahmut Kandemir, Alok Choudhary, J. Ramanujam

Faculty Publications

This paper describes a tiling technique that can be used by application programmers and optimizing compilers to obtain I/O-efficient versions of regular scientific loop nests. Due to the particular characteristics of I/O operations, straightforward extension of the traditional tiling method to I/O-intensive programs may result in poor I/O performance. Therefore, the technique proposed in this paper customizes iteration space tiling for high I/O performance. The generated code results in huge savings in the number of I/O calls as well as the data volume transferred between the disk subsystem and main memory. © Springer-Verlag Berlin Heidelberg 1999.

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A Global Communication Optimization Technique Based On Data-Flow Analysis And Linear Algebra, M. Kandemir, P. Banerjee, A. Choudhary, J. Ramanujam, N. Shenoy Jan 1999

A Global Communication Optimization Technique Based On Data-Flow Analysis And Linear Algebra, M. Kandemir, P. Banerjee, A. Choudhary, J. Ramanujam, N. Shenoy

Faculty Publications

Reducing communication overhead is extremely important in distributed-memory message-passing architectures. In this article, we present a technique to improve communication that considers data access patterns of the entire program. Our approach is based on a combination of traditional data-flow analysis and a linear algebra framework, and it works on structured programs with conditional statements and nested loops but without arbitrary goto statements. The distinctive features of the solution are the accuracy in keeping communication set information, support for general alignments and distributions including block-cyclic distributions, and the ability to simulate some of the previous approaches with suitable modifications. We also …

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Coyote Paradox: Some Indian Law Reflections From The Edge Of The Prairie, Frank Pommersheim Jan 1999

Coyote Paradox: Some Indian Law Reflections From The Edge Of The Prairie, Frank Pommersheim

Faculty Publications

No abstract provided.

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The Ada Prima Facie Plaintiff: A Critical Overview Of Eighth Circuit Case Law, Tom Simmons Jan 1999

The Ada Prima Facie Plaintiff: A Critical Overview Of Eighth Circuit Case Law, Tom Simmons

Faculty Publications

No abstract provided.

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Personal Ontologies, Michael N. Huhns, Larry M. Stevens Jan 1999

Personal Ontologies, Michael N. Huhns, Larry M. Stevens

Faculty Publications

Corporations can suffer from too much information, and it is often inaccessible, inconsistent, and incomprehensible. The corporate solution entails knowledge management techniques and data warehouses. The paper discusses the use of the personal ontology. The promising approach is an organization scheme based on a model of an office and its information, an ontology, coupled with the proper tools for using it.

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The Role Of The States In Combating Managed Care Fraud And Abuse, Joan H. Krause Jan 1999

The Role Of The States In Combating Managed Care Fraud And Abuse, Joan H. Krause

Faculty Publications

No abstract provided.

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Spoiling The Surprise: Constraints Facing Random Regulatory Inspections In Japan And The United States, Andrew Chin Jan 1999

Spoiling The Surprise: Constraints Facing Random Regulatory Inspections In Japan And The United States, Andrew Chin

Faculty Publications

This Article is organized as follows. Part I presents a rational actor model of legal compliance under an enforcement regime based on random inspections and identifies two classes of reforms that can be applied in combination to improve aggregate compliance. Part II introduces the problem of corrupt tip-offs into the model and argues that exogenous reforms are necessary to combat corruption. Part III surveys the use of random administrative inspections in the United States, reviews the approaches taken by four such programs to improve compliance and fight corruption, and describes the various constraints under which they must operate. Part IV …

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