Leptospirosis in a Steer

On Jan. 15, 1953, a Hereford steer, seven months old, was admitted to Stange Memorial Clinic with a history of anorexia, of losing weight rapidly, of standing with the tongue out, and of getting much worse two days previously

The \u27Fa Chia\u27 Political Theory and its Application in the Ch\u27in Empire

China was already old in its own eyes by the year 221 B.C. To picture that age in its proper perspective, it will be necessary, for a while, to look backwards toward an even more distant time, adjusting sight onto a day when China was young, and with what memories still extant, try to reconstruct, uncovering and making clear, that complex which caused a dawn, one magnificent moment, to explode, brilliantly and deadly, into the day of the Legalist, fortunately brief, where a God reigned on high in the guise of cruel Law--and the People suffered..

Infra-red stability of Yukawa and soft-breaking fixed points

We investigate the infra-red stability of the fixed points in the evolution of the Yukawa couplings, $A$-parameters and soft scalar masses in a broad class of supersymmetric theories. We show that the issue of stability is essentially determined in all three cases by the eigenvalues of the same matrix. In a very wide range of physically interesting theories it follows that, in the asymptotically free case, the existence of stable infra-red fixed points for the Yukawa couplings implies stable infra-red fixed points for the $A$-parameters and soft scalar masses.Comment: 12 pages, tex, Uses harvmac (big). Errors corrected in Eqs. (33)-(35), and some references adde

Infra-red stable fixed points of R-parity violating Yukawa couplings in supersymmetric models

We investigate the infra-red stable fixed points of the Yukawa couplings in the minimal version of the supersymmetric standard model with R-parity violation. Retaining only the R-parity violating couplings of higher generations, we analytically study the solutions of the renormalization group equations of these couplings together with the top- and b-quark Yukawa couplings. We show that only the B-violating coupling $\lambda^{''}_{233}$ approaches a non-trivial infra-red stable fixed point, whereas all other non-trivial fixed point solutions are either unphysical or unstable in the infra-red region. However, this fixed point solution predicts a top-quark Yukawa coupling which is incompatible with the top quark mass for any value of $\tan\beta$.Comment: Plain latex to be run twice, 12 pages. Replaced with version to appear in Physics Letters

Equations of Electrogasdynamics and Applications

This report presents in summary work done in the period from 1959 to 1963 at the Hypersonic Research Project, Graduate Aeronautical Laboratories California Institute of Technology, on some theoretical aspects of the dynamics of ionized gases. The objective of this work was to set up a system of conservation equations when no magnetic field or complicated chemical effects are present. Emphasis is placed on the gross exchange processes among species at a point, rather than the gradient transport mechanisms (e. g. , viscosity and heat conduction); in the past this point of view was often called "Gaseous Electronics". In subordinatipg the magnetic field and the chemistry to the dynamics it has been possible to explain a gratifying number of commonplace physical phenomena from first principles and to demonstrate the intimate connection between gaseous electronics and aerodynamics. The conservation equations needed for a neutral-ion-electron mixture were derived with the aid of the elementary integral transport (Maxwell-Chapman) theory exactly as used for any ternary mixture. Departures made necessary because of the ionization include (a) the collisionless ("Vlasov") approximation, (b) a reformulation of the Chapman-Enskog prosedure to include electric forces and (c) a convenient recourse to the inverse-fifth-power interparticle force law. Even so the resulting equations are merely a re-statement of the formidable problem of plasma physics. "Inviscid" equations are therefore written as counterparts of the inviscid (ideal) equations of aerodynamics. To illustrate where mathematical difficulties first appear, practical problems are solved with the aid of further approximations. These problems, as well as the physical departures mentioned above, are relegated to Appendices

An Optimal Method to Combine Results from Different Experiments

This article describes an optimal method (conflation) to consolidate data from different experiments, and illustrates the advantages of conflation by graphical examples involving gaussian input distributions, and by a concrete numerical example involving the values of lattice spacing of silicon crystals used in determination of the current values of Planck\u27s constant and the Avogadro constant

Bias in Monte Carlo Simulations Due To Pseudo-Random Number Generator Initial Seed Selection

Pseudo-random number generators can bias Monte Carlo simulations of the standard normal probability distribution function with initial seeds selection. Five generator designs were initial-seeded with values from 10000HEX to 1FFFFHEX, estimates of the mean were calculated for each seed, the distribution of mean estimates was determined for each generator and simulation histories were graphed for selected seeds