Overview of Energetic Particles at Uranus

  • Cheng A.
  • Krimigis S.
  • Lanzerotti L.
  • Mauk B.

We review the results from the Voyager Low Energy Charged Particles (LECP) experiment in the magnetosphere of Uranus. Upstream ion events were observed outside the bowshock, probably due to escape from the magnetosphere. However, no energetic charge exchange neutrals were observed, placing an upper limit of < 60 cm sup ...

1/f Noise in Cr Films From Spin-Density-Wave Polarization Rotation

  • Garfunkel G.
  • Israeloff N.
  • Lucero A.
  • Scofield J.
  • Vanharlingen D.
  • Weissman M.

Measurements were made of the temperature dependence, strain dependence, defect dependence, symmetry properties, and small-sample statistical properties of the large 1/f noise in antiferromagnetic Cr films. The results are consistent with a model based on rotations of the polarization of spin-density-wave domains. Spontaneous electronic symmetry-breaking effects are proposed as a ...

Intelligent Network Services: Signaling and Architecture

  • Batho K.
  • Russo E.

Extensions to Signaling System 7 (SS7) make possible a wide variety of new services in an Intelligent Network (IN). This paper provides a brief overview of such services, and profiles their evolution from the early service specific architectures of 1987-88 through the service independent architectures of the later (1989) services ...

The NP-Completeness Column: An Ongoing Guide (Number 21: Interactive Proof Systems for Fun and Profit)

  • Johnson D.

This column will be devoted to the concept of the "interactive proof system," together with its popular spin-off, the "zero-knowledge" proof. Recent STOC and FOCS conferences have seen an outpouring of papers on these topics, and it will be impossible for me to cover them all. I shall, however, try ...

Extensions of the Minimum Discrimination Information Approach for Hidden Markov Modeling

  • Dembo A.
  • Ephraim Y.
  • Rabiner L.

In this paper we extend the minimum discrimination information (MDI) approach for hidden Markov modeling of information sources proposed in [1], and present an efficient algorithm for its implementation. Furthermore, we provide exact conditions under which the segmental k -means approach, which is an approximation to the maximum likelihood (ML) ...

Arsenic Redistribution During Cobalt Silicide Formation

  • Baiocchi F.
  • Pai C.
  • Williams D.

The redistribution of arsenic during cobalt silicide formation was studied. For the case of cobalt monosilicide (CoSi) formation, arsenic was implanted initially either into the Co or into the Si substrate and for the case of cobalt disilicide (CoSi sub 2) formation, arsenic was implanted initially into either CoSi or ...

Opportunities, Challenges, and Bottlenecks in the Implemantation of Surface Mount Technology

  • Rudy D.

The introduction of Surface Mount Technology into the electronics manufacturing environment presents an opportunity to correct many of the problems inherent in the existing through-hole world which evolved with very little detailed planning or coordination. The prospect of being able to generate a technology where design, components and assembly technology ...

AT&T's Library Network: An Overview

  • Reed D.

BUSINESS and STRUCTURE: The Library Network is an association of libraries and specialized information services organizations, representing most of AT&T's major technical and business information resources. Presently, the Library Network encompasses 54 libraries and specialized information services groups. Individual libraries and information services groups may participate in the Library Network ...

AT&T's Library Network: An Overview

  • Reed D.

BUSINESS and STRUCTURE: The Library Network is an association of libraries and specialized information services organizations, representing most of AT&T's major technical and business information resources. Presently, the Library Network encompasses 54 libraries and specialized information services groups. Individual libraries and information services groups may participate in the Library Network ...

Searches for Non-Newtonians Variations in the Earth's Gravity

  • Aiken C.
  • Ander M.
  • Backus G.
  • Chave A.
  • Cooper P.
  • Fisher E.
  • Gorman M.
  • Greer J.
  • Hammer P.
  • Hildebrand J.
  • Lautzenhiser T.
  • Nieto M.
  • Parker R.
  • Sasagawa G.
  • Sidles C.
  • Spiess F.
  • Stevenson J.
  • Wirtz J.
  • Zumberge M.

A series of experiments is underway to search for non-Newtonian behavior in the earth's gravity field. The objective is to measure the variation of gravity with depth in settings where the density of the surrounding material is known accurately. Gravity values were obtained to a depth of 1.7 km in ...

Automatic Estimation of Articulatory Controls in a Text-to- Speech System

  • Parthasarathy S.

The transformation of a linguistic description of English text to realistic speech waveforms is guided by a model of human speech production. The formulation of rules for the model parameters has always involved human feedback. The quality of speech synthesized using hypothesized rules is typically judged by a human listener, ...

C++ and Object-Oriented Programming

  • Stroustrup B.

This talk presents the C++ programming language and the programming paradigms it supports. C++ is with minor exceptions a superset of C and supports data abstraction and object-oriented programming through facilities for defining classes, that is, user-defined types, and hierarchies of classes.

Silicide/Poly Link Explosion in Laser Redundancy Technology for Very High Density Memory IC Repair

  • Lu C.

The yield of VLSI/ULSI has always been one of the most important measures of their success in production. It has been known that the implementation of redundancy in VLSI/ULSI circuits, such as DRAM or SRAM, has dramatically increased the yield. Moreover, programmable redundancy is not only a yield improvement aid ...

ISDN: From Trial to Reality

  • Iffland F.
  • Sherry R.

Late in 1986, AT&T began its introduction of ISDN with the ceremonial first call involving Illinois Bell and McDonald's Corporation. Since that time, several steps have been taken to provide wide Local Exchange Carrier (LEC) exposure to the ISDN features on the 5ESS Switch and, thus, make the commercial introduction ...

A Comparison of Minimum Propagation Delay and Unity Power Transfer Frequency of Submicron MOSFETs

  • Simmons J.
  • Taylor G.

The object of this communication is to demonstrate a relationship between the maximum small-signal frequency of operation and the large-signal propagation delay of a submicron MOSFET. A figure of merit for the MOSFET is derived as the frequency for which the ratio of power transferred between stages of identical amplifiers ...

Twelve-Channel Individually Addressable InGaA/InP p-i-n Photodiode and InGaAs/InP Led Arrays in a Compact Package

  • Forrest S.
  • Huntington R.
  • Johnson J.
  • Kaplan D.
  • Miller R.
  • Ota Y.
  • Potopowicz J.
  • Seabury C.

We report on monolithically intergrated 1 x 12 arrays of In sub 0.53 Ga sub 0.47 As p-i-n detectors and InGaAs LED's for use in long-wavelength optical communication system applications. The detectors are sensitive in the wavelength region of 0.95-1.65microns, and the LED's emit at 1.30microns. The devices utilize Si ...

Acoustic-Phonetic Classification Using an Auditory Model Front End Analysis (NOT PUBLISHED)

  • Ghitza O.
  • Ljolje A.

It has been reported in the past that Ensemble Interval Histograms (EIH) can be used as the front end to an isolated word DTW based recognizer achieving good performance (Ghitza, ICASSP '87). In this study we analyze the EIH properties by implementing an EIH based front end to an acoustic-phonetic ...

Magnetic Properties Near a Metal-Insulator Transition

  • Bhatt R.

Using doped semiconductors as a paradigm, the magnetic behaviour of a disordered system undergoing a metal-insulator transition will be described, and contrasted with the situation in the absence of disorder. Low temperature magnetic and thermodynamic data of phosphorus doped silicon will be compared with results from the pertubative scaling approach ...

Dipole Magnetic Field for an Advanced Fuel Fusion Reactor

  • Chen L.
  • Hasegawa A.

A dipole magnetic field produced by a floating superconducting ring can stably confine a high beta(`O(1)) plasma which is generated by RF-induced inward diffusion and heating at omega`omega sub d.

Rate Equation Modeling of a Low Pressure rf Argon Glow Discharge

  • Colgan M.
  • Murnick D.
  • Robinson R.

A Laser Optogalvanic (LOG) study of the lowest metasable and resonance levels (1s sub 5 and 1s sub 4) in a low power inductively coupled argon rf glow discharge showed anomalous signs and time dependences. Laser absorption measurements yielding absolute densities of all 4 states in the 1s manifold have ...