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Healing for the Soul
Reimagining Gospel : An Introduction -- "A Balm In Gilead" : "Tuning Up" and the Gospel Imagination -- The Moment That Changed Everything : Gospel Music and the Incarnation of Time -- "The Evidence of Things Not Seen" : Gospel Vamps and the Incarnation of Text -- The Pursuit of Intensity : A Formal Theory of the Gospel Vamp.
On the Theory of Boolean Formulas
Substitution operators for subformulas of Boolean formulas are introduced and investigated.
Plurality-count Diversity Combining for Fading M-ary Transmissions
The performance of a plurality-count diversity combiner for fading M-ary transmissions is analyzed, and calculated error probabilities are presented graphically for alphabet sizes of 2, 8, and 32. The performance is shown to be within 3 dB of that of an optimum square-law combiner for moderate alphabet sizes when there is no restriction on the allowable number of diversity branches. It is shown that a worthwhile saving in transmitted power can be effected by using nonbinary alphabets with plurality-count combining for the transmission of binary data. The availability of extra information from the combiner for use with error-correction is discussed.
Energy Source Requirements for Reliable Circuitry
A very simple analysis of circuit reliability when the source of energy of 'power supply' is included shows that small independent sources of energy are needed. Several possible ways of satisfying this intuitively obvious need are discussed. (Author).
Transient Reflection and Transmission of a Plane Wave Normally Incident Upon a Semi-infinite Anisotropic Plasma
General solutions for the transmitted and reflected waves in integral form are obtained for a plane wave of arbitrary time dependence, normally incident upon a semiinfinite, cold, collisionless, homogeneous, anisotropic ionized medium. The special case of an isotropic plasma with an incident wave of harmonic time dependence is also investigated. (Author).
Nonlinear Terms in the Generalized Ohm's Law
It is shown that a spatial gradient in the steady flow of an ionized gas introduces terms into the generalized Ohm's law that represent an exchange of momentum between the electrons and the gas flow. Depending upon the flow geometry and gas compressibility this electrokinetic exchange can behave like a generator, a Hall current, or a resistive current. The scale of the phenomenon is L = +/V, where V is fluid velocity, + is electron-positive charge collision time. Electrokinetic conditions apply largely at boundaries. In a resistive medium with a static B-field, the principal condition for electron-flow interchange is that magnetic pressure dominate dynamic pressure. At the boundary of a plasma jet the scale over which EK terms are important is of the order of 1 mm. Only geometry and scale considerations are used in the momentum equation. The electrokinetic generation of surface currents is as fundamental for describing moving media as spacecharge effects are in the static case. (Author).
