Cathode-ray display of digital computer outputs

A system in which the output of a digital computer is displayed as an arbitrary character on a memotron tube is described. Two sequences of pulses, each consisting of 25 pulses equally spaced in time, each either positive or negative, and all of equal magnitude, are applied to X and Y counters. Each pulse either increases or decreases the contents of the counters by one. The digital data in each counter are then converted to analog data which is applied to the deflection plates of the tube. Eight types of basic lines are traced on the screen and the characters are built out of these basic lines by continuously tracing them one after another in the proper sequence. Details of linking the system with an existing computer are described. Some advantages of the system are: (a) it does not involve any critical and complicated adjustments, (b) the shape of characters can be easily changed, (c) the operation of the system is mainly digital, and (d) the character is written as a continuous trace.     

Some comments on fuzzy variables

Nahmias introduced the concept of a fuzzy variable as a possible axiomatic framework from which a rigorous theory of fuzziness may be constructed. In this paper we attempt to shed more light on fuzzy variables in analogy with random variables. In particular, we study the problem: if X₁, X₂,…,X_n are mutually unrelated fuzzy variables with common membership function μ and α₁, α₂,…,α_n are real numbers satisfying α_i ? o for every i and Σ_i=1ⁿα_i=1, when does does Z = Σ_{i = 1}ⁿα_iX_i have the same membership function μ?     

Studies in the formation of heterocyclic rings containing nitrogen: Part XXIII. Condensation ofo-aminobenzamide with aldehydes and schiff bases

N-Arylidene orthanilamides undergo isomeric cyclisation in acetic acid to the corresponding 2-aryl-1, 2, 3, 4-tetrahydro-4-oxoquinazolines. The u.v. and n.m.r. spectra of some of the arylidene derivatives and their isomeric tetrahydroquinazolines have neeb studied. Condensation ofo-aminobenzamide either with aromatic aldehydes in nitrobenzene or Schiff bases in acetic acid has yielded 2-aryl-4 (3H)-quinazolinones.     

Determination of sulphanilamides with alkyl nitrites by a potentiometric method

A potentiometric titration with alkye nitrite solutions is described for the determination of various sulpha, drugs.     

Normal families of harmonic functions

A condition on the majorant (depending on a single coordinate) of a family of functions harmonic in a sphere is determined whose satisfaction guarantees normality of the family.Translated from Matematicheskie Zametki, Vol. 3, No. 5, pp. 547–552, May, 1968.]     

Phase transition studies in 9O.6 and 9O.8

The variation of density with temperature across different phases for two homologues of the N(4-n-alkyloxybenzylidene)-4'-n-alkylanilines (9O.6 and 9O.8) exhibiting the S_AS_CS_FS_G phase variant is determined. The influence of pretransitional effects in the fluctuation dominated non-linear region in the vicinity of the isotropic-smectic A transition and the nucleation growth analogy of this transition are discussed.