SCIENTIFIC ABSTRACT LEVIN, B.R. - LEVIN, B.YA.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000929520006-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 23, 2000
• Sequence Number: 6
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

L 12*65-65
ACCESSION NR: AP4046690 5/0109/64/009/010/1878/1882
AUTHOR: Zlotnik, B. M., Levin, B. R.
TITLE: Energy spectra of code sequences with a constant weight
SOURCE: Radiotekhnika i elektronika, v. 9, no. 10, 1964, 1878-188Z
TOPIC TAGS: signal spectrum, signal energy spectrum
ABSTRACT: The energy spectrum of a signal encoded by a binary code having a
constant weight (number of units in the code word) is theoretically determined.
Such an encoded signal is considered as a pulsed random process which
represents sequences of independent code words having length n and number of
n
units N e n/Z; the code alphabet contains W words, and the occurrence of each
word in equally probable. Each word consists of a packet of N square pulses
representing code units in their proper positions. Formulas and a curve for the
energy spectrum are presented. Orig. art. has: Z figures and 15 formulas.
ASSOCIATION: none
SUBMITTED: 290ct63 ENCL: 00
SUB CODE: EC, DP NO REF SOV: OOZ OTHER. 000
Card I / I

ACCESSION NR: AP4014671
SIO 108/64/0 IWOO 1 /00 13/0017
AUTHOR: Lavin, B. R. (Active member); Fornin, Ya. A. (Active member)
TITLE: Distribution of duration of peaks of the sinus oidal-mignal-plus -normal-
noiae envelope over the threshold level
SOURCE: Radlotakhnika. v. 19, no. 1. 1964, 13-17
TOPIC TAGS: communication theory, signal plus noise envelope, normal
stationary noise, peak duration distribution
ABSTRACT: This to a continuation of a previous work (Radiotekhnika, v. 18,
no. 5, 1963) based on S. 0. Rica's findings (BSTJ* v. 37, no. 3, 1958). The
unknown probability density and integral ifunction of peak-duration distribution
are representedanalytically by an apprc6dmation method which involves theme
1:ons ide rations: (1) In the region of short-duration peaks, the distribution
function can be evaluated with sufficient accuracy by its first approximation;
'&d.-, 1/2

ACCESSION NR: AP4014671
(2) In the long-duration regloji, the function decreases exponentially: (3) The
area under the distribution curve is equal to 1,0 (4) The first moment of the
probability density is equal to a known value of the mean peak duration.
Approximation formulas are presented. A "satisfactory agreement" is claimed
between the data estimated by this above method and that experimentally obtained
by V. 1. Tikhonov (UFN, v. 78o no. 3, 1962). Orig. art. has: 3 figures and
I Z formulas.
ASSOCIATION: Nauchno-tokhnicheakoye obahchostvo radiotekhniki i
elektroavyazi (Scientific and Technical Society of Radio -Engineering and
F.1 ectro communication)
SUBMITTED: 18Feb63 DATE ACQ: 07Feb64
SUB CODE: CO NO REF SOVI 003
Card
ENCL: 00
OTHER; 001

L 10406-65 EWT(1)/KW(1,,~-2/EWA(h) Pz-h/Fo_4/Pq-h/Pg-h/F1-4/Peb R&Wf(e)
ACCESSION NR: AP404547Z S/0108/64/019/009/0053/0060
AUTHOR: Byaly*y, L. 1. (Active member); Levin, B. R. (Active member)
TITLE: Evaluating the parameter of distribution of reliabilitl( on the basis of
teat reaults [ Report at the Conference devoted to "Mathcdo of testing _electronic
-qo onents for reliability, iif~ ararnater stability, and methods of quick
V P
_n_____M1Ri_r60 j
Ltests," Leni grad.
SOURCE: Radiotekhnika, v. 19, no. 9, 1964, 53-60
TOPIC TAGS: reliability prediction, reliability test, reliability evaluation
ABSTRACTi In W,, Welibul.1s; distribution of the probability of faultless operation
(J. Appl,* Mach. v4. 18, no. 3o 1951).
> 0'. 1* > 0, T >
the parameter t* can be deter"ned for one lot of the product if the other
C,G,d

1V406-65
ACCESSION NR: AP4045472
parameter oL is known (an a-priori value assigned). The present article offers
an evaluation of th(z parameter t* on the basis of the niaximum-likelihood method
applied to the results of many tests performed in the course of the prodtiction
process. individual tests have different durations and involve various numbers of
test specimens. Formulas for evaluating t* and its dispersion are supplied.
Orig. art. hase, 40 formulas.
ASSOCIATION: Nauchno-tekhnicheakoye obahchestvo radiotekhniki i elektroavyazili
(Scientific and Technical Society of Radio Engineering ani Elect roco mmuni cation)
SUBLUTTED: 31juI63 ENCL: 00
SUB COD!',.: EC NO REF SOV- 000 OTHER: 007
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