Studies of a Cusp-Region Hydromagnetic Wave Event with Magnetometers and Incoherent Scatter Radar

  • Hunsucker R.
  • Lanzerotti L.
  • Maclennan C.
  • Medford L.
  • Rice D.
  • Wolfe A.

A large-amplitude (~100 nT) low frequency (~0.002 Hz) hydromagnetic wave event was measured with magnetometers at three sites in conjugate areas in the magnetospheric cusp region and at one site (Sondre Stromfjord) with an incoherent scatter radar (IRS).

Search for Cusp-Latitude Magnetic Field Signatures of Possible Flux Transfer Events

  • Lanzerotti L.
  • Maclennan C.
  • Medford L.
  • Trivedi N.
  • Wolfe A.

We have carefully studied magnetic field data acquired at the 'conjugate' pair stations Frobisher Bay/South Pole to examine the nature of the magnetic signatures sup 1 as possible ionosphere signatures of flux transfer events (FTEs). We find, in an examination of data over the interval July- November 1985, many events, ...

GaAs-AlAs Monolithic Microresonator Arrays

  • English J.
  • Gossard A.
  • Jewell J.
  • Mccall S.
  • Scherer A.

The growth of integrated GaAs-AlAs nonlinear etalons by molecular beam epitaxy (MBE) is an effective means for fabricating high-quality optical logic devices. sup 1 From the sample of reference 1 reported previously, we have formed monolithic "posts" or microresonators 1.5-5 um across by ion-beam assisted etching sup 2 and have ...

Latitudinal Variations of Dayside Pc3-5 Magnetic Energies

  • Lanzerotti L.
  • Maclennan C.
  • Wolfe A.

Similarities and differences are reported between high and low latitudes for the local time dependences of dayside magnetic energies, both statistically for the entire time interval and for individual days. These results are discussed in the context of hydromagnetic wave sources and energy propagation from high to low latitudes in ...

Building Blocks for Distributed Information Systems in Hospitals

  • Rutt T.

In order to provide a consistent view of work functions which can be supported by successive releases of hospital information systems, a hospital business model was developed. The business model is an "umbrella model" which describes potential system functions along with their data access needs.

Thermal Modulation of Rotating Disk Electrodes: Steady State Response of Limiting Currents and Open Circuit Potentials

  • Miller B.
  • Valdes J.

The temperature of a thin rotating disk electrode can be modulated by the absorption of laser radiation impinging on its back, using a hollow tube design(1). Interpretation of the concomitant electrochemical response to this heat source and the subsequent cooling by the convected solution is our object.

Backward Adaptive Algorithms for Speech Prediction and Enhancement

  • Jayant N.

This talk summarizes the characteristics of a recently standardized backward predictor for speech. It also describes recent work on an adaptive speech enhancement system whose parameters are derived from those of the backward adaptive predictor.

Microelectronics for the 1990's

  • Andrews J.

The development of solid state electronics at AT&T Bell Laboratories is traced from the invention of the point contact transistor in 1947 to the present. Included are significant milestones such as standard buried collector technology isomg beam leads, microcomputers(1), and the megabit DRAM sup 2.

Novel CVD Materials/Processes for Manufacturing of Submicron Devices

  • Harrus A.
  • Manocha A.
  • Martin E.

The manufacturing of the next generation of silicon integrated circuits with submicron design rules will require new materials and/or new processes. We present here three examples of material/processes that have been developed for such applications.

X-Ray Structural Studies of Surfaces and Interfaces

  • Robinson I.

Characteristic, diffuse x-ray diffraction patterns have been measured for Si(111) surfaces and interfaces using intense sources of synchrotron radiation. Analysis of the bulk and surface components leads to determination of the structures.

Ductility Determination for Rolled Annealed Copper Foil

  • Engelmaier W.
  • Wagner A.

Copper foil is used for the conductive layers of both flexible and rigid printed wiring boards. With the fatigue ductility test the ductility of metallic foils and flecible metal foil/dielectric laminates can be determined. Together with the tensile strength this allows prediction of the fatigue behavior of flexible printed wiring ...

End-Product Hardware Design Quality Metrics - Definitions

  • Anglade E.
  • Macrae A.

This paper presents a set of six metrics that seeks to characterize hardware design quality from the customer's perspective. The purpose of these metrics is to provide feedback on end-product design quality to designers, developers, and their management.

Electronic Band Properties and Superconductivity in La2-yXyCuO4

  • Mattheiss L.

The results of linear-augmented-plane-wave electronic-structure calculations on the body-centered-tetragonal phase of La2Cu)4 provide insight concerning the origin of high-temperature superconductivity in the substantial La2-yXyCuO4 alloys.

Electronic Band Properties and Superconductivity in La2-yXyCuO4

  • Mattheiss L.

The results of linear-augmented-plane-wave electronic-structure calculations on the body-centered-tetragonal phase of La2Cu)4 provide insight concerning the origin of high-temperature superconductivity in the substantial La2-yXyCuO4 alloys.

Electronic Band Properties and Superconductivity in La2-yXyCuO4

  • Mattheiss L.

The results of linear-augmented-plane-wave electronic-structure calculations on the body-centered-tetragonal phase of La2Cu)4 provide insight concerning the origin of high-temperature superconductivity in the substantial La2-yXyCuO4 alloys.

A Bit-Slice Architecture for Sigma-Delta Analog to Digital Converters

  • Brinthaupt D.
  • Chen D.
  • Deppa T.
  • Elward J.
  • Fields E.
  • Friedman V.
  • Meleis H.

The Sigma Delta analog to digital converters are based on the filtering and undersampling by the digital section of the one-bit output stream coming from the modulator. The structure of this section, consisting of a sinc cubic FIR filter decimator followed by an IIR decimator section, is discussed. It is ...

Specific Heat at Magnetically Ordered bcc sup 3 He

  • Greywall D.

Precise specific-heat measurements have been made on low-density samples of bcc sup3 He for temperatures in the range 0.6 to 10 mK and for magnetic fields of 0, 6, and 10 kOe.

A Transition Rate Matrix Approach for The Solution of Markovian Queue

  • Chen C.
  • Kozin F.

A new method is presented to solve the steady-state probabilities of many Markovian queueing problems which normalizes the minors of the on-diagonal elements of its transition rate matrix. This not only applies to the continuous time Markov chain but also to the discrete time Markoc chain.

Reply to "Comment on 'Pseudopotentials that work: From H to Pu'"

  • Bachelet G.
  • Hamann D.
  • Schluter M.

In this comment the authors report on small differences found in the ion-core pseudopotentials of Si between our results and the values tabulated by Bachelet, Hamann and Schluter. It is shown that the rounding of the parameters in their tables leads to inaccuracies. For convenience to future users of the ...

Overview of Large-Scale Facility Location/Capacity Expansion Models for Material Logistics Planning

  • Klincewicz J.

We present an overview of recently-developed models, both static and dynamic, that choose locations and sizes for facilities. Although generic in nature, these models were developed to plan the configuration of large-scale material logistics systems. We discuss heuristics to solve these models and present some motivating examples.