Study of Thermally Oxidized Yttrium Films on Silicon

  • Gibson J.
  • Gurvitch M.
  • Manchanda L.

Electrical and structural characteristics of thin thermally oxidized yttrium layers on Si and on Si covered 40angstroms of SiO sub 2 have been investigated

Cross-Pol Canceler Architectures for Microwave Radio Applications

  • Bar-Ness Y.
  • Carlin J.

This paper discusses cross-pol cancellation for microwave radio system applications. A model for cross-pol interference coupling during multipath fades is postulated and some preliminary performance goals presented.

Band Gap Engineering of Al sub x Ga sub 1 Ga sub 1-x As Device Structures by Electron Beam Source MBE

  • Hopkins L.
  • Lang D.
  • Levi A.
  • Levine B.
  • Malik R.
  • Miller R.
  • Ryan R.

A new technique for the growth of III-V compounds by molecular beam epitaxy has been developed which uses electron beam heating for evaporating the group III liquid metals. The growth chamber is vertical and incorporates three large capacity 40cc hearths for Ga, Al, and In. The metal beam fluxes are ...

"Optimization-Based Transistor Sizing"

  • Dunlop A.
  • Fishburn J.
  • Sangiovanni-Vincentelli A.
  • Shyu J.

This paper describes a mathematical approach to transistor sizing. The approach picks a set of critical transistors and converts the transistor sizing problem into a nonlinear optimization problem. This problem is then solved by mathematical programming technique. Although experiments show that this approach takes a lot of CPU time to ...

New Direction For Cellular Engineering & Operations Tools (NOT KNOWN IF PUBLISHED BECAUSE AUTHOR HAS LEFT AT&T)

  • Sakayama L.

When cellular telephone systems are initially laid out and deployed, engineering necessarily centers on RF prediction and coverage analysis. As the subscriber base grows, the engineering focus shifts from coverage analysis to performance analysis and efficient management of existing system resources.

Conductivity Distribution from EM Induction by Tides in EMSLAB Experiment

  • Chave A.
  • Filloux J.
  • Tarits P.

The tidal signal on pressure, electric and magnetic seafloor recordings from offshore EMSLAB is determinated by simultaneous cross correlation with the gravitational tide generating potential, while allowing free representation of the non-gravitational contribution.

Uranus Ion and Electron Phase Space Densities

  • Armstrong T.
  • Cheng A.
  • Krimigis S.
  • Lanzerotti L.
  • Maclennan C.
  • Mauk B.

Ion and electron phase space densities in the Uranian radiation belts have been calculated from Voyager 2 Low Energy Charged Particle data.

X-Ray Diffraction with a 4-Reflection Monochromator

  • Macrander A.
  • Slusky S.

We derive a formula for simulating rocking curve measurements made with an x-ray diffractometer fitted with a four-reflection monochromator. The derivation is carried out both graphically and algebraically. Results of the simulation are then compared to our experimentally obtained rocking curves.

Secular Decrease of Interplanetary Shock Accelerated Ions in 1985

  • Decker R.
  • Gold R.
  • Lanzerotti L.
  • Maclennan C.

A dramatic decrease in the flux of ~ 0.5 MeV shock accelerated ions in interplanetary space was observed in early 1985. The decrease was observed by IMP 8 at 1 AU and by Voyagers 1 and 2 in the outer heliosphere. Voyaer 1 and 2 in the outer heliographic latitude ...

Change in Interplanetary Shock Acceleration Preceding STIP Interval XVII

  • Decker R.
  • Gold R.
  • Lanzerotti L.
  • Maclennan C.

The intensity and frequency of shock acceleration events in the interplanetary medium decreased dramatically in early 1985. Low energy ions were observed by IMP 8 at 1 AU and Voyagers 1 and 2 at 22 and 16 AU respectively. Voyager 1 was at 25 degrees heliographic latitude while IMP 8 ...

BESYS Revisited

  • Drummond R.

The origins and development of the BESYS family of operating systems are traced. Developed at AT&T Bell Laboratories in the late fifties, the system was used for over ten years to control and facilitate the use of the IBM 704-709X series of computers.

Observations of Uranium Magnetospheric Ions Immediately Upstream of Uranus' Bow Shock

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

The Low Energy Charged Particle experiment on the Voyager 2 spacecraft performed measurements of energetic ions and electrons upstreams of Uranus' bow shock on January 24, 1986.

AT&T Dataflow Multiprocessor Family

  • Geller M.

Viewgraphs only

Industrial Applications of Syntactic and Structural Patter Recognition

  • Baird H.

The extend to which research on syntactic and structural pattern recognition has been reduced to practice is described. Useful applications and exploitation in commercial products are surveyed, and the experiences of application engineers are related. Promising new fields, as well as persistent obstacles, are pointed out.

Conductance Fluctuations in Microstructures for a Four-Probe Geometry

  • Baranger H.

Recent work on conductance fluctuations in microstructures has revealed universal characteristics in the diffusive regime. However, quantitative microscopic calculation to date have dealt exclusively with the two-point conductance of a disordered region attached to two ordered leads. These calculations are appropriate only when the conductance is measured on a scale ...

Two-Dimensional Modeling of Transfer Functions from the EMSLAB Lincoln Line

  • Chave A.
  • Filloux J.
  • Jones A.
  • Travis B.
  • Waff H.

An improved two-dimensional magnetotelluric modeling code has been developed which incorporates recent advantages in finite element methodology and numerical algorithms that take full advantage of the structure inherent in finite element matrices. Based on the moving finite element method, the algorithm introduces adaptively moving nodes into the finite element equations, ...

Two-Dimensional Magnetotelluric Modeling Using Adaptive Triangular Elements

  • Chave A.
  • Travis B.

We have previously cleared a new magnetotelluric modeling code which is based on an adaptive mesh and the moving finite element method. that code was restricted to rectangular mesh cells, and mesh nodes could only move horizontally or vertically. An upgraded version of the code has been developed which removes ...

The Transient-Behavior in Erlangs Model for Large Trunk Groups and Various Traffic Conditions

  • Mitra D.
  • Weiss A.

The paper considers the time behavior of blocking in a N-trunk group with exponentially distributed holding times and Poisson offered traffic. For N large and for light, medium and heavy traffic loads, we obtain results which are new, simple, easy to interpret and calculate, and provably correct.

Structure Factor Determination in Surface X-ray Diffraction

  • Robinson I.

Special considerations apply to the measurement of two-dimensional (2-D) structure factors. First of all, there is strictly no well-defined, integrated intensity because the data are continuous functions of perpendicular momentum transfer.

Offshore EMSLAB: Stepping stone for BEMPEX

  • Chave A.
  • Filloux J.
  • Luther D.

Magnetotelluric investigation of the earth beneath the oceanic basins has challenged the imagination of geophysicists as early as MT sounding was demonstrated on land,