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

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000929520005-9
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 23, 2000
• Sequence Number: 5
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

P 11.,(Moskva)
Toohnological progress in the development of transport
means. Izv. AN SSSR. Energ. i transp. no.5s595-598 8-0 163.
(KRA 16t 22)

KJR"IyLrv, V.I. LEVIN B I retoenzent; PESKOVA, L.N.,, red.;
U f a K 0 9 r.'A 4.#-:-6
'i;& red.
[Business accounting in the transportation construction)
Khosiaistyermyi raschet v transportnom stroiteltstve. Mo-
skva., Tranombeldorizdat., 1963. 62 p. (MIRA 17:2)

LIVIND Dole
on a great drivee Tramp. atroi. 14 no-lv4-5- Ja '64o
(XIRA 1798)
3.. Nachallnik Takhniohookogo upravloniya Woudarstvinnogo
proizvo4etvennogo kmitsta p0 transportnam stroitelletTu
SSSR,

B. 1.
Increase the tempo of technological progress. Trans stroi. 14
no.91l-3 8 164 &IRA 18:1)
1. Nachallnik Tektinicheskogo upravlenlya Gosudarstvennogo prn-s-
vodstvannogo komiteta po transportnomu stroitellstyu SSSR.

L 09129-6
.kCC NRi -AP60319-94--(A
I
AUTHOR: Kolokolov, N. M. (,Doctor of technical sciences, Professor); Levin, B. 1.
(Candidate of technical sciences)
ORG: None
TITLE: New methods for building roads in marshy regions of the West Siberian Lowlands
MCE: Transportnoye'stroitelletvo, no. 7, 1966, 5-8
'IC TAGS: civil engineering, highway construction, railway construction, railway
,dge, highway bridge
BSTRACT: The authors discuss new methods used for building railroads and highways
hrough swampy areas. One of the new methods is the use of reinforced concrete tres-
les instead of roadbeds. This innovation is useful in those areas where sand and
ebble conglomerate is hard to procure for firm embankments. Another recent innova-
ion is the use of pile-based prefabricated tre-tle bridges used both for railways and
ighva,ys. Studies were carried out by the Central Scientific Research Institute of
ommunications on the cost, service life and labor expenditure involved in tuilding
ail lines and highways using the nev methods. The studies show that the efficiency
,f building trestles depends on the design of the pile supports vhich in turn Is deter-
ined by, marsh depth and load capacity of the mineral bottom. These data show that
OxhO cm prestressed piles may be used In those areas Vhere the base Is sandy and where
Card 1/2
UDC: 625.1;627.

L 09129-67
kd_k% 1
0
t,he marsh is not very deep. Where the marsh in deeper than 4 meters, four 60 cm tube-
type pile supports must be used. The angles at vhich various types of piles must be
driven are discussed. Tubular piles with closed ends are most efficient in river
floodplains since they do not have to be driven very deep. The authors discuss var-
ious types of piles with expanding ends designed to Increase their load capacity in
lov-load soil. Bridge spans and various methods for laying roadbeds on them are con-
sidered. A study carried out by the Central Scientific Research Institute of Communi-
cations shows that rails can be laid on the concrete spans without using ballast beds.
The surtace of the concrete is covered with epoxy.glue which keeps water from seeping
in. Such spans are up to 12 m long, 15% lighter than spans using ballast beds and are
20% cheaper. Since Western Siberia has an abundant supply of wood, wooden piles can
be used in conjunction with reinforced concrete. The wooden piles can be manufactured
near the construction sites vhich saves-money on transportation. The utilization of
these methods should make it possible to build roads In very marshy regions of the
Western Siberian Lowlands. Orig. art. hasi 6 figures.
COM * - 13/ SM DATE-: None
_~!Tk._291~08et

KRUPIN, Grigoriy Vasillyevichj, prof.j KHAJI, Kharlltzpy
103aritonovich, lnzb. Prinimali ucbaatiye-. RYABIKOV, V.?.;
LKVpj,,P.K.; DEDYULIN, N.D., retBenzent; GATILIN., N.F.,
retsenzent; KUZIMIKA, V.S., red.
(Designing enterprises of the dairy Industry] Proektirova-
nis predprilatli molochnol. proo7ohlennosti. Moskva, Pi-
shchevaia promyshlonnost'.. 1964. 399 p. (YJU 18:3)

GESEIRLIN M.G. (Moskva),#
B-M-_JNDokva),- MLMIKONOV, A.G. (MDakva)
Industrial SRP-3 remote control systeme Avton*i telm 22 no#7:
950-933 J:L 61. (X[RA 24 s 6)
(Remote control)

25(5) PHASE I BOOK EXPLOITATION SOV/1879
~~vinj, Boris Menakhemovic~
Ekonomiya chernykh metallov v narodnom khozyaystve SSSR (conservation
of Ferrous Metals In the USSR National Economy) Moscow, Gospoli-
tizdato 19589 342 p. lOsOOO copies printdd.
Ede.: Yu. Lyubovich; and V. Podgornovaj Tech.,Ed.: Yu. Mukhin.
PURPOSE: The bo9k is intended for planners, economists and party
workers in ferrous metallurgy establishments,* various branches
of the maohinery-manufacturing industryp railroad transportationp
etc* It may also be used as a textbook by vuz. students taking a
course in industrial economics.
COVERAGE: The book presents a description of the effort to conserve
ferrous metal in all stages of processing and use. The signifi-
cance of metal economy to the economy as a whole and to machinery
manufacturing in particular is also discussed. Emphasis is placed
on methods of discovering areas where metal conservation would
Card 0

Conserv~tion of Ferrous Metals (Cont.) SOV/1879
bring the most beneficial resultoo A system of indices which make
It possible to compare metal consumption of different establish-
mente within the same industrial branch,- is included. Chapter II
was written jointly with Engineer I.I. Pinegin. There are 67 re-
ferences, all Soviet.
TABLE OF CONTENTS:
Foreword 3
Cho 1. National Economic Significance of Ferrous Metal Conser-
vation 7
1. Role of metal in the national economy and the development
of metallurgy in the USSR 7
2. Ferrous metal economy and the development of machinery manu-
facturing 11
3. Conservation of ferrous metals in the national economy and
technological progress 17
4. Cycle of ferrous metals in the national economy and poten-
tial savings 23
5. Conservation of ferrous metals and the increase In labor
productivity 31
Card 2/5

Conservation of Ferrous Metals (Cont.) SOV/1879
Ch. II. Metal Economy in Metallurgy 35
le Decreasing metal losses in the production of pig iron In
blast furnaces 35
2, Decreasing metal losses in the production of steel 43
3. Metal economy in rolling 53
4o Re-uae of ferrous metals 59
Ch. IIIe. Improvement in the Assortment and Quality of Ferrous
Metal Products as a Factor in Metal Economy in Machinery
Manufacturing and Construction 67
1. Rationalizing the assortment and expanding the production
of lightwedge rolled steel shapes 69
2. Production and use of special and Variable cross section ehaM82
3. Increasing the quality of ferrous metal products; as a factor
in metal economy 93
4. Economical dimensions of rolled steel and improvement of
Its surface quality 101
Ch. IV, Metal Economy In Machine and Tool Elements 106
Card 3/51'.

Conservation of Ferrous Metals (Cont.)
SOV/1879
1. Improvement of machines and reduction of their relative
weight 107
29 Lowering excessive factors incorporated in the elements and
lowering the *eight of lightly-loaded parts 119
Rational selection of structural materiaLs NO
Increasing the engineering efficiency of machine elements 1 7
Ch. V. Metal Economy in the Manufacture of'Machines and Tools 160
1. Metal economy in casting 162
2. Metal economy in forging 180
3* Metal economy In sheet die forging 195
4. Progressive engineering processes in manufacturing machine
parts 207
Ch. VI. Conservation of Ferrous Metals During Their Use 216
lo Increasing the durability of machine parts in machines 217
2. Metal economy in too;-making and maintenance shopts 228
Controlling corrosion and other losses of metal 245
Improving the utilization of capital assets and moderniza-
tion of equipment as factors in metal economy 253
Ch* VII. Organizational Factors in the Conservation of Ferrous
Card 4/5

Conservation of Ferrous Metals (Cont.)
SOV/1879
Metals in the National Economy of the USSR 264
1. Standardization and development of rational forms of in-
dustrial organization 265
2. Improving the management of industry in the UBSR 279
3o System of progressive Indices for specific metal losses
and establishing norms for metal consumption 290
Business accounting$ material and technical supply, plan-
ning and organizing production 30T
5o Socialist competition 323
Bibliography 339
AVAILAUE.* Library of Congress
Jq/bg
Card 5/5 9-18-59

LEVINO B. M.
Normirovanis i planirovanis tskh*vykh ramkhodove Niciskrap Xashgizq 19h9o
239 P.
ffundardization and planning of machina-shop expenseme-7
DICs TJ1135.Lk8
Sot Manufacturin and Mechanical Engineering in the Soviet Union, Library
of Congreems 1953,

12VIN, S.H.; TROITUIY, P.A.
[Shop expenditures; standardization, plannN, calculation and analysis of
shop expenditures of machine-building plantsj ?Sekhovye raskhody; normirovanis.
planirovanis, uchet I analis tsekhovykh raskhodov mehinostroitallnogo sayoda.
2.. dop.i perer.izd. Hooky&, Go.9 nauchno-takhn.izd-vo mashinostroit. lit-ry.
1953. 251 p. (MLRA 6:10)
(Ifficiency, Industrial) (Machinery--Construction)

PTIN. Boris K y1cmich,
. .......... -.-Ma
EAll-out development of heavy Industry In the general line of the
OPWI Teemernse rasvitle tinsholol Industrii - goneralluals Units
USS. Moskva, Gos.isd-yo, polit.lit-ry, 1956. log p. (MIRA 12:3)
(Russia--Zoonomic polioy)

YOROZMM 9 Dmitriy Ivanovichg inzh.; LIBM 9 Grigoriy Markoviobi
Unrim MrAukhoylob-L BEXH7ZMp Ivan Andreyevicb; CHIMISEMCHp
Fedor Ignatlyevichl BM;'f*~G*p kand, tekbn, naukr retsenzent;
TISHCHMMOp A.I.v insh.0 retesuzentj YAKOVLZV, D.V.# inzb,g red.;
BOBMNAq Ye.N.9 tokbn. red.
(Operation and maintenance of electric d,oo locomotiveal Skapluatataiia
i oboluzbivanie elektrovozov postoiannogo tokao Moskyag Yees, isdatel'Ao-
poligr. obwedinsuis H-va putei soobahchaniiat 1961. 341 P. (KIRA 34s8)
(Electric locomotives)

0-* ...
Contact measurement method In the microgeometry of surfaces Moskva, Gos. nauchno-tekhn.
izd-vo mashinostroit. Lit-ry, 1950- 191 P. (52-16728)
TA407.L43

IZM B. M.
I T~i -U R, ka
4., kIr, 41.0 12 _I.__
UOR/Physics - Optics, Mirrors Jan 52
"A New Mirror Multiplier," B. M. Levin
"Zhur Tekh Fiz" Vol XXII, No 1) pp 105-110
Proposes a method which will permit one to enhance
and vary the sensitivity of autocollimational meas-
uring and photorecording devices by means of a
suitable choice of angles in the familiar mirror
Multiplier with 2 .mirrors without complicatinj the
design. 2~ Mar 51.
2D6?107

, -i
7 , I -
j- 1 , ,4
I -
L19YINA.M., kandidnt tekhnicheskikh nauk (Leningrad)
moawffomw~
Optioal-mechanical profilographs, (Izd.) LONITOMH no.34:
21J~-26o 154. (KM 8:10)
(Surfaces (Technology))

GORDIHOVSXIY, Yu.N.; LITIN B.M.
Projeoter-granuloseter for the datermination of gra=l"ltr of
photographic blackening* Usponauch.fot. no.4sll?-124 153.
(Photographic sensitomatry) W" 9: 4)

, P. m.
of fj~c` r'cvl,'7f' for St,j,jy,,,,,,'
at the CoIjrcrnt.,e cpf C4 ' -tc' PlrJ- IA' A,trcrcqjj~~ -
Astror,olrica Cri AStroricjrl,al 9 ft I-rf.
I Co,incil., AS tjrj~,-p, 1: ~!. t6 -
r; "" -I? Feb _: ~, 1) "he
' "' "c" 1:~117, 31 Alu, ,f~
-, I

LEVIS, B.X.l DUKROM, I'l. I
%. .......
Interferometers for Ichecking planes and plane-parallel plates.
Opts-makhoprout 25 p0.6:13-15 Js '58. (MIRA 11:10)
(Interforonter)

-LEVINP B.M#
Automatic control of separator unit. rash. i neft. obor.
no.301-34 164. (MIRA 17j5)
3. Veasoyuzriyy nauchno-iseledovatellskiy i proyektno-
konstruktorokly institut komplokenoy'avtonatizatelt
neftyanoy i gazovoy promyshlennosti.

---.----- -- - dota., kand. ekonom. nauk; LEVIN, Abram
flaumovioll) donor khn. nauk, prof.; PETRUSHEV, I.M., red.;
TER-SMANYANTSl H.S.9 red.,j CMASIMOVAO Ye.S.# tekhn. red.
[Using plastics and saving materials in industryl Primenenie
plastmass i ekonomiia materialov v proDVshlennosti. Moskvs.
Economizdatp 1962. 21+2 p. (MIRA 15:6j
(plastics)

LEVINI B.H.0 knad.tekhn.nauk
glectr a power plants on "Sergei Botkinl-type ships. DWorm. abor.
TSNIDW no.69 Tekh. ekepl. mor* flota no,12:57-78 161. (MIRA 16 P)
(Electrioity on ships)

(VI -
LEVINO B.# kand. takhn. nauk,, etarshiy nauchnyy sotrudnik;
YEMIYANCYV, 1.
Standardization and control of marine power plant perfor-
mances, Mor. flot 23 no,7:25-26 J1 163, (MIRA 16:8)
I* Vantrallnyy nauchno-iodledovatellskiy institut morskogo
flota (for Lavin). 2. Nachallnik otdala toplotakhniki
Baltiyokogo parokhodatva (for Yesellyanov).

GRINBZRG, R.I., laureat Staltaskoy premil, doktor takhnichosicikh nauk.
professor; ~ III-AA, inshener: FAINXIL', L.D.. Inzhener;
Pow5flum Y.L., Inshener; BXMTM. D.Y., Inxhoner.
8V&150-1 steam turbine made by the Leningrad (Staltn) ketallurgi-
cal Plant. Xnergomanhinostroonle no.1:5-16 0 '55. (KLBA 9:5)
(Steam turbines)

SOV/124-58- 3-3068
Translation from: Referativnyy zhurnal, Mekhanika, 1958, Nr 3, p75(USSR)
AUTHOR: Levin, B. M.-_
TITLE: Method for Determination of the Localized Entrance Losses
in the Suction Pipe of a Hydraulic Dredge (Metodika opredele-
niya mestnykh poter' vkhoda vo vsasyvayushcheye ustroystvo
zemlesosnogo snaryada)
PERIODICAL: Tr. Mosk. in-ta inzh. zh. -d. transp , 1957, Nr 88/9,
pp 52-57
ABSTRACT: In his determination of the entrance-loss coefficient for a
hydraulic -dredge suction pipe the authorutilizes the law of
the conservation of energy For analytical purposes the
author assumes that suction of cohesionless underwater soil
is performed through a vertica) pipe, In accounting for the
horizontal scanning speed of the dredge. the author suggests
to reverse the arrangement, i. e. , to consider the suction
pipe stationary and the soil and water as moving at the speed
of scanning.
Card 1/1 N. A. Pritvits

SOV/124-58- 3- 3067
Translation from: ReferativnyY zhurnal, Mekhanika, 1958, Nr 3, p 75 (USSR)
AUTHOR: Levin B M
TITLE: On the Determination of the Suction Flow Rate of a Hydraulic or
Suction Dredge (K ,oprosu ob opredelenii vsasy%-ayushchey
sposobnosti zemlesosnogo snaryada)
PERIODICAL: Tr. Musk. in-ta inzh. zh. -d. transp. , 1957, Nr 88/9, pp 58-67
ABSTRACT: A Study is Made of that optimal flow rate of hydraulic mixture at
which the output of a hydraulic dredge relative to soil mass actually
delivered achieves its maximum value. The author asserts that the
optimal flow rate is determined solely by the particular properties
of the suction pipe of the hydraulic dredge and is at variance with the
maximal discharge rate of the total hydraulic mixture. An equation
is obtained for the determination of the greatest permissible volumetr
denifify Of the hydraulic mixture. The paper contains a reference to
a paper by A N. Klimentov (Gidrotekhn. str-vo. 1951, Nr 12) which is
devoted to the same problem.
N.A. Pritvits
Card 1/1

LEVIN, -- B, M.: Master Tech Sci (diss) -- "Investigation of the operation of a
mechanical ship fuel system with stokers". Leningrad, 1958. (Min Maritime Fleet
USSR, Leningrad Higher Engineering Maritime School im Admiral S. 0. Makarov),
150 copies (KL, No 8, 1959, 136)

MOSTKOV, Hlkball AbramovIch (deceased), prof,; YAHRADO, G~Po, Imnd. takhn.
twak, red.; I3VINp BeNe. lush.,.red.; VARIKL, G.Pe, takhn. red..
[FgdranUes] Gidravliim. Moskva. Goo. transp. shel.-dor. Is&-yo,,
1958. 346 p. (Nm U29)
1. Miles-korrespondent Almd mli nmak Orusinskoy MM (for Mostkvr),
(4draulics)

GRXBXNI, Mikhail Lasarevich; 01CMININ, Anatoliy Aleksandrovich;
LITIN. B.90~_*uchnyy red.; ZHITNIKOVA, O.S.. takhn.red.
[Regulation of steam turbines made by the Leningrad Metal-
working P3ant; design, testing. and adjusting) Raguliro-
vanis perovykh turbin Leningradskogo Hatellichookogo savodal
konstruktaiia, ispytania i naladka. Moskva. Goe.energ.isd-vo,
1959. 181 P. (MA 13:3)
(Steam turbines)

TUIN, Vladimir losifavich; GMWYIN, L.I., reteensent; ;~INA.X.,otv.
red.; SANILSR, N.Y., red.izd-va-. XOTLTAKOYA, 0.1., takhn.redo
(Marine boilaral their grouping and design] Kotly morskikh sudov.
Komponovka i raschat. Leningrad, Izd-vo *Korskoi transport,*
1959, 422 p. (MIRA 13:3)
(Boilers, Kerins)

LVIN, B.M., insh.
Local entry losses In auction dredging under water. Trudy MIT
no.lz2t.281-312 159# (mm 13:5)
(Dredging)
11

VINDORkDOT, X.I., doteent, kand,tekhn,nauk; LIVIN,.B.N~, assistout
Mossurlvg the discharge of hydraulic mixtures b7 a full-
pressure reversed pipes Trudy MIT no*1070.24-27 160.
(XRA 13:7)
(Wdranlics)

LEVIN, Box. assistent
Dischargeamd true Aaractertstics of hydraulte mixtures
in the auction pipe of thA dredge. Trudy MIT no#1073
28-32 #6o. (XINA 13:7)
(qrdraulles)

LITIN, B.M., assistant
Relation between the consistawy of the hYdrsull'O mixture and
suction parameterse Trudy MIT no~107333-46 160o
(MIRL l3s7)
(Yrdraulics)

-,Lzvll, B.H., assistant; MIXHAYIDVA. N.A., kand.fis.-matsmnsuk
Use of Orlov's bathoseter in measuring turbidity under
laborator7 conditions. Trudy MIT no,107s47-69 160.
(KM 13:7)
(Bathometed (Turbidity)

VALLPTOVj, V.V.; VESNIX., M.I.; GONCHAROV., I.S.; RUTROV, D.V.; LUNEV, A.A.;
MOXINp H*I*; NMETWp S*Ne; SPjIRNGVjp V*P*; ALEKML?V,, S#A,, re-
teenzent; KARKAZOV, A.G., reteenzdnt; KONDRATOVICH, V*M*# reteenp-
zent; J421 B.M.I_ retsenzent; MUNOV, A.H.., retsenzent; SEGALE-
VICH, S.H., retoenzent; SHPAGIN, A.I.# retsenzent; SHTERN, L.T.#
reteenzent; YAKOBIp A.A.p retsenzenti TIKHANOV,, A.Taop tekbno red.;
CHERNOVAp Z.I.v tekbn. red,
[Establishing norms for the consumption of materials in machinery
manufacture; rar-all flormirovanie raskhoda materialov v mashino-
stroenii; spravoobnike Pod reds V.V*Valetova. Moskva, Goo, nauchno-
tekbn, izd-vo mashinootroit, lit-rye Volol. 1961. 583 Pe
(MIRA 15:2)
(Machinery industry)

LEVIN, B.M.-
Main characteristics of the pover plant on the steamer "Sergei
Botkin." Inform. abor. TSMIDIF no*47~-Tekh. ekspl. mor. flota
no-3:3-23 160. (KIRA 15:1)
(Steam navigation)

LEVIN, B,H.t TCHLYANOVICH, D.K-
Certain features of the operation of a parallel fed contact network.
Sbor. nauch. rab. AM n*.2s26-38 *-60. (MIRA 15:5)
(Electric railroads..-Wires and wiring)

ROZHDESTVENSKIY, N.A., kand.tekhn.nauk; LEVIN, B.M., kand.t,-kbn.nauk
Power plant of the steamship "Leninskii Komsomol." Inform.sbor.-
TSKIIMF no.52. Tekh.ekspl.mor.flota no.5:19-48 '60. (KM 15:2)
(Marine engines)

pBDXHOFjOV, Fedor Nikitoviob; BEIDRULINp Yu.P.,, insh.,, retsenzen�
insh., retsenzentj RTAZAMZVA# Tu.A.j,
rateensent; KALININ, V.K., insh., red.; BOBROVA, 19.N.p
takhn.'red.
(Electric traction departments and electric pover supply of
electric railroado]glektratiagovoo khosiaistvo i energo-
snabshenis slaktrichookikh sholesnykh dorog. 2., parer. i
dop. isd. Abskya, Tranosholdorisdatp 196 2. 134 P.
(MIRA 16ti)
(Electric railroads-Current supply)
(Electric locomotives)

LEVIN, El M kand. takhn. nauk; IPERSHIKOV, L.F.; GOLIDENFON, A.K.,
;;-YU tekhn. nauk; AFANASIYEVt X.A.; STRUMPEy P.I.# kand.
tekhn. nauk, oty. red.; SUSHKOVA, T.I., red.; KOTLYAKOVA,
0.1., tekhn, re4.
(Methods of te4~tlng thermodynamic processes in marine steam
turbine plantsj Hatodika teplotekhnicheskikh ispytanii sudovykh
paroturbinnykh ustanovok. Leningrad, Izd-vo "Horskoi trans-
port,'- 1962. 118 p. (MIRA 16:9)
1. Leningrad. TSentraltnyy nauchno-inaledovatellskiy institut
mQrskogo flota.
(Steam turbines, Marine)

KALINIX, V.K., kand. takhn. naukj KIRONOVp K.A., imih.1-2 N- A.-M--.
Insh.1 LINW, G.M., insh.j URSHOV, Te.F.0 lnih.-j
PANCHENKO, P.M.j, insh.; BDLYCH19V, N.G.,, nashinist slektro-
vosal ZOLOTAIMV9 V.R., mashInist Instraktor#- YANIN, I.A.,
Insh,j BDVEO Ye,G.p kand. tekhn. nauk, red.f USENNO, L.A.,
takhn. red.
(Electric networks and maintenance of the eq!aipment of
electric locomotives] Elektricheskie ekhemy i ukhod %a obo-
rudovaniem elektrovozov. (By) V.X.Kallnin i dr. Moskva,
Tranesholdorizdat,, 1963. 279 p. (MIRA 16:7)
(Electric locomotives)

LEVINP-BoMet kand. takhn. nauk, assisIsIt
pros sedimentation of finely divided particl,13. Trud7 XIIIT
no,1643173-178 163. (KIRA 18:3)

LEV1Nj B.M., kand. tekhn. nauk; KADYKOV, V.T., Inzh.;
.". -1HIVOMVSKIYO L,S,, kand. tekhn, nRuk~ KARLIN, B.I., kand.
0
tekhn. nauk
Study of the loss of head in hydraulic conveying of micro-
granular material along horizontal pipes. Tridy 1411T no.176:
53-58 163. (MJRA 1716)

I
I.EIVIPAII B.M., kand. tekhn. nauk
Effnet of I*nd on the rWing of a reasuring diephragm.
Tnidy MIT no.176t76-85 163. (VRIPA 17 :6 )

LEVINY B.M.9 kadd.:'.,toldin..nauk; DROVYANNIKOVA, V.I., lnzb.;
inzh.
Measuriq low velocities of water currents by photography.
Trudy 141T no.176t86-90 163. (HIM 17:6)

oni 0' ~
tic

LEVIN, B.M.v kand. tekhn. nauk; DROVYANNIKOVAy V.Io, nzh.
Study of the hydrodynamdca of flow In horizontal hydraulAc
sand claaslfiers. Trudy MlIT no.176S130-143 163.
(MIRA 17s6)

B.M.. kand. tekhn. nauk; DROVYANNIKOVA, V.I., !nzh-*,
T.I., Inzh.
Study of V!e process of the precip,'tation cf
suspensions in swill concentrations, Trudy YGIT nn.l.~f,.-I44-159
163. (MIRA 17:6)

LEVIN, B.M., kand.takhn.nauk
Methods of standardizing fuel consumption for ships of the
merchant marine. Inform. abor. TSNIIMF no.105 Takh.ekspl.
mor. flota. 28:40-55 164.
(MIRA 18:7)

USSR/Electronics
Card 1/1
Author i Levin, 0. A. and Levin, B. R., Active Members, VNORIE
Title I The passband of a linear system and the reproduction of signals
without distortion
Periodical : Radiotekhnika 9, 21-30, Mar/Apr, 1954
Abstract : Considers calculations of signal pulse form distortions during
FD
transmission through a minimum-phase linear system If only the
frequency characteristic is known. The distortion factor of signal
form as a whole and the time lag of the signal are used as quantitative
measurements of distortion. Also shows that spreading the character-
istica of the standard frequency response passband causes an automatic
improvement of the form of its phase response. Six references: 6 USSR.
Institution : All-Union Scientific and Technical Society of Radio Engineering and
Electric Communications imeni A. S. Popov (VNORiE)
Submitted : October 31, 1952

UYIN, B. R.
"Time Characteristics of Impulse Signals Obtained from a Linear Network.," Radio
Tekh., xo 1, 1955

USSR/Electronics - Pulse techniques FD-2288
Card 1/1 Pub 90-1/12
Author Levin, 0. A. and Levin B.-,R-.
Title Time Characteristics of signal Pulses Pasting Through Linear Systems
Periodical Radiotekhnika 10, 3-llj Jan 1955
Abstract Article gives new calculation# for delay time, displacement time, and
time of rise of the signal front for multi-stage circuits with mono-
tonic and non-monotonic transient characteristics. In a system with
identical stages and monotonic transient characteristics, the time of
rise of the signal front Is equal to difference between the delay time
and displacement time. The formulas and graph@ to the work can be used
in planning multistage systems for reproduction of rectangular pulse
signals with given distortion characteristics. Tables, graphs. Four
references, 3 USSR.
Institution;
Submitted : May 28p 1954'

01, 44-
108911H, Valentin Unstantlnovich, professor; J~IN. Boris Ravinovichi
1UTTHIX# Igor$ likolsyevich; BORISOV, Boris Petrov-i-cE-.--PUffTXUr',
D.A.0 diktor takhoichaskikh nauk, retsenzent; WSHrA, AJ.,
kandidat takhniobaskikh nook. r*daktar-, UVAROVA, A.Y., takhni-
ohaskly redaktor
E7"o-plston engines in best power plants] DvAgatell so smobodno
dyishushchistels porsbulast v toplosilovykb ustanovkakh. Pod red.
TACAoshkina. Kookys,. Go*. nauchno-takhne isd-vo mashinostrait.
lit-ry# 1957. 227 P. (MM 10-6)
(Gas turbines) (Gas and oil enclose) (Platona)

Call NrsTK 6553 L45
AUTHOR: Levin, B. R.
TITLE: Theory of Random Processes and Its Application in
Radio Engineering (Teoriya sluchaynykh protsessov I
yeye primeneniye v radiotekhnike)
PUB. DATA: XzdateTstvo "Sovetakoye Radio" Moscow, 1957, 496 p.p.
ORIO. AGENCY: None given
EDITORS: Ivanushko, N. D.; Tech. Ed: Sveshnikov, A. A.
PURPOSE: The book is intended for radio engineers who wish to
learn the methods of the theory of random processes
and apply it in their every-day work.
COVERAGE: The book deals with Russian contributions-for refer-
:0
ences and personalities, see Table of Contents.
TABLE OF CONTENTS
Introduction 3
The names of USSR personalities mentioned include
CallA..1/17 Gonorovskiy, 1. S., Prof., Drakin, Ye. V4, aspirant.

RELIABIUTY SYSTEM
"Increase of the Reliability of Systems by Providing Spares", by B.R.
Levin, Elektrosvyazl, No 11, November 1957, pp 65-72.
The reliability of system consisting of a large number of elements
has been studied by many investigators. This article is devoted to
methods of increasing reliability of systems by introducing spare
elements. One of the fundamental assumptions is that any two elements
of the system are independent, i.e., that when one element goes out of
order it does not affect the reliability of the second element.
Reference is made to work by Moskowitz and McLean "Some Reliability
Aspects of System Design" IRE Transactions, PGKC-8, September 1956.
Card 1/1
LIPSMAN, 1-andidat to':hnicheskikh nai*; takhriclimel, 11-h
nauk.
Hadio relar linoo. a nnw trend in er-ninicatinn enginnerine. Prlrwia
46 n9#7:19-30 J1 157o (1',I,.;?A 10:P)
(R&ilo ralay cyato-x)

LVIN~_B.x.
A'wGrsga working time of elements the reliability of which changes
BXWDdntiany, Blektrosvias' 12 n0-8130-3$ Ag 158. (xiRA n.. s)
(Information theory)

AUTHOR: Lev SOV/106-56-!2-4/13
7Taking into Aa-z;'!*mt tte Rep!s.--:r_dnt :)f Faalty
TITLE: Reliability
V &zhd&nnykh
Components (Nadozhnos" s -a.. atom zamin p
elsmentuv)
PERIODICAls E1*ktrcsvyaz1, 1953, Nr 127 PP 3`4 (USSR)
ABSTRACTS A oritsrion of the diff*r*nt zetho.13 cf pro-viiing a
reser-re of apraratis fo;% I-mproving tho reliability of a
system is the prc'~ability of the syst,3m ofeval-Ing without
'4
interraptIon oTe? a Sit-on period of V-Me Pefs 1 - 3).
Siforov and Lorin (Hof I - 3) cor3ld*rs! 41fts tine
Jntex-;al frim V!~~ c=9na*mout of op*ration to the instant
of the first interruption. The obje-3t of this arti~.,!* is
to wid*v. the ",_heoi-f of raliaLility by taking into acu-ount
the 'ima sp4nt in replar.-axent faulty cc=pozenzu.
Initially the simplest -,%so of a slzgle element Ais con-
sidered, subseq-.zently a mul';i-~:ompotento syst-em is dealt
with. T'-'^a distribution Panation of the intervals tetwoon
suacsssivt repla2,oment of a =pe-n-or-t Js first sstu'~-
Card 1/2 lis'-0. zssumirg that the instani 0_&If"Slure is random
and in':9;*ndan:'. of tt,9 time t~.v !s first

sov/lo6-58-12-4/13
Reliability Taking into Account the Replacement of Faulty Components
switched Ila. The probability of a given number of
switching-in operations in a given time is found and
also the average number of switching-in operations of
the reserve elements. Then the author considers the
effect of the time of replacement assuming
(1) instantaneous replacement, (b constant replacement
time, (3) an exponential law of distribution of the
replacement time. Finally typical examples are given.
There are 3 figures and 6 references (4 Soviet,
1 English and 1 translation)
SUEMITTED: July 17, 1958
Card 2/2

1ZMj B. R. (Dr.)
"Some Results of Mathematical ReliablItty Theory."
paper presented at the 5th Symposium on Reliability and Quality Control in
Electronics, Philadelphia$ 12-14 Jan 1959.
The paper presents results on following:
a. Reliablifty of Systems containing redundant subsystems. In this case,
the analysis applies to probdbility of failure In a fixed period of time.
b. Extension of the above to treat time as a variable.
c. Various statistical quantities applying to conditions in which
replacement components are switched into a system.

mm I BOOK MWMTLON SOV/4836
Levin, Boris
r1ya sludaynykh protsessay I yoye primmeniye v radlotekbnike (Ptandom
Process Theory and Its Use In Radio Engine-ring 2d ed.,, ray. and enl.
N*scowp W-vo"Somu" radio,,'" 196o. 6-62--p*. Errata ellp Inserted.
No. of cog*# printed not gVnm.
Zd.s X. D. Innusbko; Tech. Ed.: A. A. Svesbnikov.
PUMSX: This book Is intended for scientists.. tseWcal persame3pand as-
p1rantaL, and also for teachers and students in advanced courses of the
radlo-engineering divisions of sebools of higber eductlon.
OOVERAGNI 2his book attm;ts to fln a gap In Soviet literature by presenting
basic Information an the theories of probability and r&ndm processes to
those people who m concerned with mdio-engineering problmm. The maual
vas a)Ao designed to be useful to rafto angineeraj, Wh--ch fact explains the
e=VMsis put an several rMio-engIneering wmples vh1ch Illustrate the
possibility of using theoretical probability methods for solving a variety
Cmd- I / 14 -

AUTHORs Levin, B,4,,.-,-tMoScoW)
TITLE: '~6-Reliabilityeof an
Courr-or---p
6/024/60/000/02/030/031
Bl1fO/E13 5
Amplifier with Automatic Gain
PERIODICALS Izvestiya Akademii nauk SSSR, Otdeleniye tekhnicheskikh,
naukp Energetika i avtomatika, 1960,Nr 2,pp 208-209 (USSR)
reliability of
an
ABSTRAM The use of feedback improves the
amplifier but requires a larger number of stages, which
in turn reduces the reliability. Analysis shows that
under appropriate conditions there exists an optimum
number of stages in the presence of feedback for which
Card the reliability is a maximum.
1/1 There are 1 figure and 3 Soviet references.
SUEMITTED: December 21t 1959

69891
,%/1o9/60/005/04/002/028
E140/9435
AUTRORi kovin~-R.R.--
TITLIts Optimal Phase Methods of Skgnal Detection
PERIODICALsRadiotekhnika I *Iektronika, 196o, Vol 5, Nr
PP 537-543 (USSR)
ABSTRAM The anthor employs the concepts of statisti4al
decision processes to find optimal methods of
processing phass samples of a signal In noise. In
place of a sample consisting of n Instantaneous
va lUes of amplitude. It in possible to process a signal
sample consisting of n/2 amplitudes and n/2 phase valuvs.
Ca Then in place of the "absolutely optimal" processing of
the n samples# it is possible to consider processing
of the n/2 amplitude or n/2 phase samples alone. The
author known only the work of Huggins and Middleton
(Ref 2) in the previous literature on comparison of
phase and amplitude optimal detection methods. From his
analysis, the author concludes that the atatistical
characteristics of detection of a weak determined signal
by the optimal phase method are better than for the
Card 1/2 optimal amplitude method and are clos* to the absolutely

LITIN, S.R.; YAXSIMOV, Tu.P.; MIFIAMIR, L.P.
I
-V~
Crosst&lk resalting from qiamltaneous transmission of television
and telephone cou-nics,tidus &loAg the "me lines* Blek-
trosvias' 14 no.4s4g-61 Ap 160. (KIM 13s6)
(Telephone) (TeleileloA-Interference)

26428
s/io6/6o/ooo/oo5/bo2/boq
A055/A133
AUTHORSs Levin, 0. A.; Levin, B, R.; Ayzenberg, V. I.1 Rozanov, V. S.
TITLE: Increasing the efficiency of multichannel systems with time division
of channels
PERIODICAL: Elektrosvyazj no. 5, ig6o, lo-16
TEM Statistical measurements in multichannel systems with time division
of channels revealed that a telephone channel Is really active only for about 15
minutes per hour at maximum load. The probability law proves that during 99% of
the total time the number of active channels does not exceed a value n < N
(N being the total number of channels). The present article shows how it is
possible to increase the efficiency of these multichannel systems by a proper
use of Inactive Intervals and channels. It also shows that this efficiency can
be Increased by a more complete utilization of the statistics of the instantaneous
values of the transmitted signals: by varying the duration of the channel inter-
vals In accordance with the Instantaneous value of the transmitted signal, it Is
possible to Increase the number of channels. To enhance this efficiency, it is
necessary to abandon the channel Interval of constant duration. Inasmuch as
Card 1/7

26h28
S11061601000100510021009
Increasing the efficiency of multichannel ... A055/A133
the time interval between pulses of the preceding and following channels is used
as carrier of useful information, the method described by the authors is a
variety of pulse-time modulation and can therefore be named "interval pulse-time
modulation" or IPM. There are many possible variants of this new type of
modulation system, but all these variants can be divided into defknite categories
according to: 1) the method used for transmitting the number (n-)-of the channel
2) the method allowing to take Into account the sign of the modulating signal.
Let us assume that the voice signal((t) is a stationary random process with
j2
probability density w (x), with zero mean value and with dispersion Lot us
,he systems where the Information Interval is modulated by the absolute
analyze t
value hit (t)i of the signal in a given channel, and where the sign of the signal
Is coded by an additional pulse. If tV Is the random duration of the information
interval of the i -th channel, the probability density of tV 13;
W (X) - .2 W ex) X> 0 W
h h
where h is the proportionality coefficient(which will be assumed equal to one),
The mean value and the dispersion of tV are respectivelyt
m It 9j . ? xw ( I ) dx - hm, (t)IJ (2)
1 h h
Card 2/7

26428
S/10 /005/002/009
Increasing the efficiency of multichannel ... A055/Al33
and 00
M2 itVj x2w dx _ h2 m2
h h wi (3)
in the case of IPTM where Information Intervals are modulated by the sum of the
instantaneous values of the signal and by its envelope E (t), the mean value of
ty is: M~ ml It wi + M~ JE (t)i. (4)
and the dispersion
M tat: M (t) j + M [E (t) (5)
2 V 2 2
To compare the efficiency of several variants of the system using IPTM, the gain
procured by any one of these variants (as regards the number of channels and the
frequency-band) In respect of the usual pulse-phase modulation systems Is to
be calculated. In the usual H-channel pulse-phase modulation, Interval To Is the
sum of N + 1 channel-intervals (account taken of the synchronization channel)
The duration of one channel-interval Is.the sum of pulse V, of the protectiv;
time 3 T and of the duration of the information interval 2ocl e. The magnitude
Card 3/7

26428
3/106/60/000/005/002/009
Increasing the efficiency of multichannel A055/A133
of the peak factor cc 1 Is derived from the condition that the absolute values do
. Thus:
not exceed (with a given probability pj) 06, 0'
To M (N + 1) L + 2 OC16). (7)
Let us now analyze the time Ti occupied in one period by Ni channels of the I
system [Abstracter's note: Subscript 1 stands for any one of the compared .
variants of the system.]. If BIT' Is the duration of the code combination of
pulses per channel, Ti Is the sum of the time (BISI + 2)T, occupied by code
combinations and marker pulse, and of the total Information time equal to the sum
of n Independent, similarly distributed, random magnitudes. Si Is here equal
to ae number ni of active channels In the case of a special coding of the number
(no) of the channel, and to the total number N , of channels In the case of a
simple reading of channels, If the number of active channels Is, with a proba-
bility near one, not inferior to ten, the total information time can be considered
as distributed according to )tfe normal law(yft~ the mean and the dispersion
respectively equal to t,J and ni M~ td. Therefore, TI is a fortuitous
magnitude whose-parameteri are:
M - (B 31 + 2) T + n M( 1) ty M_, fTj - M(') ftyj n (8)
1 Pi i I I I 1 2 1'
TI is limited below by magnitude c (minimum duration of all code combinations and
Card 4/7

26428
S/106/60/COO/005/002/009
Increasing the efflcl,~ncy -,-;-tichannel ... A055/A133
or marker. pulse in one perio4~1, must not exceed, with probabil'ty P2 near one,
the duration of period ~o , th!:7 ivoid distol-tions. Taking (8) Into account,'
we obtain:
To - (ftjSj + 2),t -njm#,') I. F r - (111', + 2) i-tim P2.
M(i) /MV) n,
But It.'is possible b state that,
F P
P- 2
where
To B13 1 + 2), n m
n
Equation (10) allows to determine ~2 (for a given probability 1 P2 of the
system overload). Using the exprcsslon:
0(12)
+
-7 A 'n M tv n M
i
Card 5/7

26h28
311061601000100510021009
Increasing the efficienqy of A055/AI33
we find:
To M (BOI. 5"v -(13)
Substituting into (13) the value of extracted from. we find the final
formula tor the possible number of channe.13 Nj, when (the'noiseimmunity remaining
unaletered)'one of the variants of IFIMI Is used Instead of pulse-phase modulation:
ni being deterrrined as a function of Ni with the aid of the "activity curve"
(activity coefficient k versus N). 2quation (Ili) allows to find function
Ni N (N) at fJr~_,d valu4~s of TC, and ~, zuid at given Values of p, and P2- If,
wit; 16, the nu7rber ~%r :3 left -!qual to N, the time occupied by these
N channels will be 'n'*-r.*_o- It i!~' b,-! possible, therefore, to increase
the pulse duration *11*.1
To - Al (15)
ti (N) BiS + 2
The narrowing of the required frequency band, allowed by the passage from pulse-
phase modulation to IPTM. will then be characterized by the relation:
(16)
Card 617

26428
S/1 /005/002/009
Increasing the efficiency or multichannel ... A055/A133
At the end of the article, the authors, using the above set of formulae, compare
the efficiency of the different variants (1) of the IPTM system. They find that
the least efficiency corresponds to the coding of the number (no) of channels by
a uniform binary code. With a non-uniform binary code, the minimum efficiency
(1.75-times Increase of the number of channels) is yielded by the system with the
additional, sign Indicating, signal, and the maximum efficiency (1.91-times in-
crease of the number of channels) is yielded by the transmission of the sum
(signal + its envelope). The greatest efficiency (4.15-times Increase of the
number of channels) is obtained with the simple reading of channels and the
transmission of the sum (signal + Its envelope); this method ensures also the
maximum narrowing of the band for the same number of channels. There are 5
figures, 2'tables and 5 references: 2 Soviet-bloc and 3 non-Soviet-bloc. The
two references to English-language publications read as follows: Holbrook, Dixon.
"Load Rating Theory for'Multichannel Amplifiers". BSTY, v. 18, 624, 1939. US-
Patent, cl. 179-15. no. 2724017, 15-11-55.
SUBMI February 3, 1960
Card 7/7

6.46oo, 9.2400
/i r i~-i -2 -r-112
AUTHORt Leviq,-13"k.--
TITLEt n Some Problerxa In the Theol'y of Reliability of
Radio -Elec tronic Equipmont (Reported at the October
31, 1958, 3e.,ision of the Reliability Section of the
Scientific and Technical Society of Radio ring
and Electric Communications ij;ienl A. S. Pnlvov.)
PERIODICALs Radio tol*hrLika, 1960, Vol 15, Nr 2, pp 67-74 (U,1~>S11)
ABSTRACTt The paper dI3cuzse3 general con:3 Ide ra t Ions concerning
system reliability. The mathematical theory of
reliability Is based on the statlotical definition
of reliability of an element or a zyatem, as a
probability of failureless work during a certain
time interval. The system la repreoented bY a matrix
of independent element3 11 Aij 0 - For a fixed LLTe
Interval T, the element A ij 13 characterized by the
reliability p,,. Thus, a r(l1abIl1t-y matrix
11 Pjj 11 correopondine, to the 11 A ij 11 matrix 13
Card 1/b f ormed. Elemen'ts of a matriz. row are connected in

On Some Problems In the Theory of fl,~lialjlllty C, I I
oV Radlo-ElecLl"ronic Dvjulpment S0V/1Gb-l;--2-c;Jj/12
serie3 arid the r0W3 L,-C- connected In parallel. 11-1
the geneval caae vitivri a t3yntem Is reprenented by a
matrix of the mn ord(~i~ the itandby avranF,,!rn(-.-nt; may
be obtained through series -connected r n matricea
of the order m, 0 where k ~: 1, 2, . . . , r. It Irl
11 kv
r
obvlous that 7- 3k ~ n. Two ,,iethods are con:31dered
k = I '
for connecting standby elements: (1) The so-called
hot method, when all elements of the matrix column
are connected GimultEtneously; arid (2) the co-called
cold method, when ea(-h subsequent element of the
column Is connected only after a failure oll the
preceed1nZ element. In the latter case the rellabillty
p,, mu3t be known as a function of t1iie. In addttlari
to the exponential 1*.w of reliability distribution,
assumed until now In most J.nvPotij,-,a,ion3, the Paleir
~h
Card 2/8 and the norrial d1,;tr1but1.an.,5 mu:A also be f~(Jri.~31_deved

On Some Problems In the Theoi-y of Rellability '17,'fA
00
of Radio-Electronic Equipment Q
in many cases. The followIng basic are
made: (a) A system or an element i-- either, In a
condition of functioninig or it IS out of order; (b)
The elements are mutually Independent. Ban(:d on the
above conalderatloni the following three, type.,:, or
reliability problems are consideredt I Investigation
of reliability foi- a fixed time Interval: Ifere it
ls assumed that each k-th set Is prov1dud w1th a
sensitive element which detects the failure of an
element of this set and connects the standby set.
The reliability of this sensitive element Is p ak'
The reliability P, of the system Is then defined
by the following expression:
r -59 S,
P - n I- I_ n Pij n P,,, n P,
Card 3/8

On Some Problems in the Theory of Reliability 77564
of Radio-Electronic Equipment sov/io8-15-2-9/12
Card 4/8
(11) Investigation of reliability as a function of
time: Assuming (t) as a continuous function,
expressions are Pgl4en for the probability density,
the characteristic function, the distribution moment
of order k, the average time of failureleas operation,
and the variance of time of failureless operation.
The above expressions are applied to the following
three systemst (1) System of n elements in series;
(2) System of m. elements in parallel, the elements
subject to the same reliability laws(hot method of
connection)j and (3) System of n elements in series,
the system having a single hot standby system. For
each system the exponential, the Raleigh, and the
normal distribution are considered. From the obtained
results it in seen that for the (2) system the largest
magnitude of the average failureleso operating time
is obtained under an asiumption of exponential
distributionj the smallest nagnitude is obtained under

On Some Problems In the Theory of' Reliability 77,#,;
of Radio -Electronle E.-Iulpner,t SOV11C.",-15 -2 -~/12
an aooumptlon of' normal d1otillbutlon. For the (3)
system the larg~ejt and the smallest magnitudes of
fallureless operation time are obtained under
assumption,; of normal and exponential distribution,
respectively. (III) R-.~placlng of' dLunaged elements:
Two cases are considered: (a) The case of Instantarl-
eous connection of the standby e-lement- and (b) the
case of a constant failure duration t *1 When the
3'
number of failures during the time Interval (0,Q is
given as a random magnitude V, the probability
P ly--z,- n3 is that numDer of failures during the time
t doeu not exceed the number iL of elemento. A3.1juming
t* an tfic average duration of failureless operation,
the rel t".AorwhIP ')PAWL'(J111 PP-:~~ nand t/t* Is 3hown
on Fig. It for t3/t* 0.3; t3 and l'ur varlouLs
values of n.
Card 5/8

On Some Problems In the Theory of Reliability
of Radio-Electronic Equipment
Pf 4n) ----
4
Fig.
77r-164
SOV/108-15-2-9/12
Here the exponential law of reliability distribution
is assumed. Figure 5 shows the above relationihip
Card 6/8 plotted under as3urnption of normal distribution of

On Some Pi,oblenw In tho- T.-v X R, I
of' Hadlo-Electronl(,
element rellabIlIty.
Fig.
.1; 0, V/1 1, 11 - I
No particular coricluslorw ave drawn 1n the papei,.
Card 7/8

On Some Problems in the Theory of Rellab-111ty 771AA
of Radio-Electronic Equipment
There are 5 figUreS; 2 tables; and 11 referenceti,
7 Soviet, 4 U.S. The U.S. rel'evences are: F.
Moskowitz, J. B. McLeart, Some reliability asj,(,-ct;j of
systems design, IRE Tratia. PORQC-8, Sept. 19~6; G. H.
Weiss, On the time-dependent reliability of networku,
Proc. Nat. Electronics Conf., 11, Chicago 1956;
C. M. Ryerson, Reliability teating theory baoed on Lhe
Poisson distribution, Proc. Fourth Nat. S)ymp., HQC,
Jan. 1958; J. H. K. Kao, Computer inethodB e:Aimating
Welbull parameters in reliability studies, IRE Trawl.,
PGRQC-13, July, 1958.
SUBMITTEDt February 17, 1959
Card 8/8

85723
S/108/60/015/006/008/012/XX
B010070
AUTROR: Levin, B. R., Member of the Society
TITLE: Energy Spectrum of the Undetermined Integral of a Steady
Random Process
PERIODICALi Radiotekhnika, 1960, Vol. 15, No. 6, pp. 19-21
TEXT: An expression for the instantaneous energy spectrum of the undeter-
mined integral of a random process is derived, and by taking a time
average a relation is obtained which was used in the papers of D. Middle-
ton, I. S. Oonorovskiy, U. R. Bonnet, G. Ye. Kertis, and S. 0. Rays
without proper clarification of its meaning and the assumptions involved
in it. In those papers, nonsteady processes of the form
'qT(t) f(t)dt, where t >,, - T, and T is an arbitrary fired instant,
-T
were treated by methods which are valid only for steady random processes,
but even then lead to correct results for nonsteady processes. The present
Card 1/4

85723
Energy Spectrum of the Undetermined Integral 3/108/60/015/006/008/012/XX
of a Steady Random Process B010070
paper shows how these results are to be understood. It Is known that the
instantaneous energy spectrum G IT(t,6j) of a process 7T(t) can be found
by starting from the formula G, T(t, W) - a m, , where
161 t at f~ SIT(t' &0 21
SIT(t. (4) YtI )e dtip and obtaining GIT(t'(J) T2 G IT(t'G))
+ 2 tc BJ(T)T + sin co(t + T - T) + sin 6)(t + T dT, where B (t) is the
11 d I
corMation function of J(t). This function of t and 4u describes the in-
stantaneous energy speo rum of the undetermined ints,ralolof a random pro-
cess. The time average of this energy spectrum. is obtained by sub-
stituting G in F,7(14) - 'Lim' 0 4))dt. The first term gives
jT(t'&j) Noo Y27-f 7T(t T
T
the contribution, 1 lim G Qdt lim M S 0,441
2T L IT
0)2 Noo ~ JT(t T -too ~T ~ -:v I P
T -T
Card 2/4 dto

85723
Energy Spectrum of the Undeterminqd Integral S/108/60/015/006/008/012/XX
of a Steady Random Process BOIO/BO70
I I I 2f . 1 p ~ (,W)
lim i-T MI SjT(T,Aj) 6)2 where PI(W) denotes the ener-
T+00 fl
gy spectrum of the steady random process ~(t). In order that
remains finite for tj 4 0 , Ff (0) must equal.O. F (w) is thus
1 2T I
found to be given by P (4)) 612 p1m + lim -f j Y.O. [I
T#oo
0
oos43(2T-1) - I + Cos 24)T coswr dt. Since on account of F (0) - 0
B1 (-r)dt .7 (0) - 0, F?(ej) Ff (to). This formula shows the relation-
o 4 j W2
~
ship between the energy spectrum of the steady random process ~(t) and the
average value of the instantaneous energy spectrum of the integral of this
random process, taken over a sufficiently long interval of time. The
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28785
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4,711 o (1121, /S 2 Y) AO55/A127
ALITHORS. Levin, B. R. and Rozanov, V.S.
TITLE: Determining the number of channels in multichannel system using
spaced pulse-time modulation
, 4
PERIODICAL: Elektroavyaz .,no. 6 , 1961, io - 14
TEXT: In many multichannel communication systems the statistical charac-
teristics of the source of communications are not taken into account when choos-
ing the modulation method. With time division of channels, one of the methods of
signal transmission allowing to make use of the statistical characteristics of
the source Is the spaced pulse-time modulation. The theoretical study of effi-
ciency of this modulation method was already described in a previous article by
0. A. Levin, B. R. Levin, V. 1. Aysenberg and V. S. Rozanov LRef. 1: Povyshenlye
effektivnosti mnogokanal'nykh aistem a vremennym razdeleniyem kanalov (increas-
ing the efficiency of multichannel systems with time division of channels) Elek-
troavyaz', 1960, No. 51 where a way was also shown for determining the possible
number of channels; In the present article, the authors give a simpler and mathe-
matically more accurate method for determining this number. The general case of JX
Card 1/ 7

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Determining the number of channels A055/A127
an N-channel system with time division of channels Is considered. It Is assumed
that ~j(t) Is the random process describing the modulation law in an individual
channe . Account is taken of the channel activity by multiplying ti (t) by the
random magnitude Jj which becomes unity with probability p (active channel), and
zero with probability q (inactive channel). The modulation function for the N-
-channel system can then be written as:
N Pi
(t. N) W f1 ~j W I 7o M
where f is a functional tion given in the above-mentioned article. When
the absolute magnitude of the signal Is transmitted (with an additional pulse for
the sign coding), f(~) -191 ; in the case of the summation of the Instantaneous
signal values and their envelope f[t (t)] -~_(t)+E(t), where E(t) =V4' (t)+_~ '(t)
and where it(t) is a process conjugated with ~(t) according to Guilbert. It Is
assumed that the communication sources are Independent, and that only one-dimen-
sional distribution functions wt(x) of processes ri(t) are used. It is also assum-
ed that the activity and the distribution function of processes gj(t) do not de-
pend on time and are the samelbr all channels. The integrated distribution func-
Card 2/7

28785
s/io6/6 i
D-termining ths numt--r of channels A055/AI27
tion of the component 4i(t) of the modulating func-ticri is
I
P[~j 4 X].
I
PFI W, X .40
where $
F1(x) wI(x)dx
and where w1W is the probability density of f(~j ) . The probability densi-,y
of the random funetion. r,,t(t) is
w (x) = pw I (x) + q 8 (x)
Expressing by 9 (W) and tr W the characteristic
E
t functions of fl, ror-
he authors
nd:
mal and 4i(t),
ID I(W) = P 91 (w) + q
CaLrd 31t

Determining the number of channels
28785
s/1o6/61/0oo/oo6/0oi/oO_5
A055/A127
The sources being Independent, the characteristic function 19 (w) of the modulat-
ing function ~ (t, N) is:
(w)1M - [pO (w) + q]N.
(W) - [AN I
j
&pressing the moment.mk of a random magnitude by
M, - (-1), 9 (k) (0)"
the mean and the dispersion of the modulating function wil'A be given by
mj~ N)) Npa (7),
2 2
and N)j Np ( 6 + Qa
M2K
R f r
where a and 6 are the mean and the d1spersion of tho% random mWItude 1.
When N is large, the 2; (t, N) distribution can be considered &e norms! w!4.h
parameters datl~rmined by (7) and (8). The total time T c,_.cupi-~d In one interval.
bj the multichannel signal consists of the time occupl~d by
Cird V 7

28785
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Determining the number of channels .... A055/A127
and marking pulse, and of the total Information time equal to 5 (t, N). As
shown in the previous article, T is limited (lower.11mit) by the value to (mini-
mum value of the code-combinations duration of all channels and of the marking
pulse) and must not exceed the Interval duration T . The magnitude I - p2, cal-
lsd "overload probability", is one of the basic InRices of the system. If NY 1,
T is distributed normally and
P [ t 4q VE: . (T - M 1IT]) r(to - ml [T (9)
0 To F k V&-W - -ur-W ~ P2
For practical purposes, the second term in (9) can be neglected, and (9) becomm:
F (cx 2) -P 2 (12)
where a To ml (Tj (13)
or
Ot2 fNp (6? + q a2) To - 2 (N + I Yt - aNp (14) VW
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Determining the number of channels .... A055/A127
for the ordinary coding of the number of the channel, and
2 2
02 AINP (6 + qa ) - To - 2rr - (BIr + a) Np (15)
when a binary code in used. In these expressions:
ml (T] - 2(N + 1)T + aNp, K2 JTJ - Np(6 2 + qa2 ), to . 2(N + I)T (10)
for ordinary coding, and
M, %TJ - 2T + (a + EK)HP, Y42 JTJ - Np((? + q&2). t0 - 2T (11)
when a binary code Is used, Br being the duration of the code-combination of Pula
sea per channel, and 2'C the total duration of the pulse and of the subsequent
quiescent Interval. For a determined noverload probability", OL2 can be derived
from F4u&tion (12); the solution of equation (14) or (15) permits then to deter-
mine the number of channels in the multichannel system using spaced pulse time mo-
dulation. At the end of the article, the authors apply the obtained formulae to
a practical exAmplq, 1. e., to the determination of the number of channels, in the
Card 6/7
Card 7/7

MIDUTOW, D.[Yliddleton, David]; SHIRMIIN, B.A. [translator]; IZVIN,
B.R., red.; IVANUSHKO, N.D., red.; S-TROV, D.V.0 0
:11W 0 1
(An introduction to statistical communication theox7]Vvedenie
v otatiaticheskuiu teorilu. aviazie Pod rods B.R.Levina. Mo-
skva# Izd-vo "Sovetskoe radiop" VoLL 1961, 781 p.
(MIRA 15:1-1)
(Information theory) (Telecomumnication)

-Transactlonn' of. th6 Sixth Conference (Cont.)
11:11Ateilshvilip - No A* Problem of'Optimum Regime In an
Awrgetlo System 213
and Vj S. Rozanov, investigation of Trans-

apaoity of Multichannel Systems
so
6
on
0~

ith ConsiderA-,.
,
tion of the- Statistical Structure of the Source 215
43# leonovp tt, 'P, Formlng-Filter Problem and Optimum
JU
Linear Pyste 223
44,7 manevic, hj, D. V. On the Repetition of Oroups of Bvente
in A,. Scheme- With Variable Probabilities
MikWevioh' V.~ B.;,. and'A Skbrolchod, -On-the Statistiew
A

ocessei 229
of Oartain Pr
~

46,-,",Pugaohavp V. S. Methods for Solving a System of Integral
~iZquatlons Rwountered'in the Determinati6n of OptUM
Malt1dimeholonal Systems 233 .1--

TransactiOrd Of'tba 6th Conf on Probability Theory abd Hathematical Statistics an
Of tt,8 SYMOsium on Distributiong in jnfjrAtG_DiF,*n*jon&j Sp&cG8 hold
in villn
us d~-_"
y
,
W+4 5-10 SeP 160- villrwus ~403POlitizdatUt SSR, 1962. 493 p. 2500 copies printed
f4

311061631000100210011007
A055/A126
AUTHOW i Levin, B.R.. Foriln, Ya-A.
TITLEt Energy fiwictr,4 of jrru"P 019naln 1.n imilti.rhAruiol pulfie nyRLemn
PERIODICALt Elaktrouvyazt, no. 2, VX,3, 3 - V)
TMAT: The theory of the criergy npoetrn rff random puJGe processes with a
determined cadence, Interval Is appilod to aeq1jr!nrer3 or pulap. groups. The pulses
in the group can be of diffeiv~nt kinds. The analysis is limited to pulse group
processes where the statistical characterlstler, of pulse groups are independent
of their number (n4 In the nequenne, and the sitatistical characteristics of the
"ensemble" of pulse groups depevid only on thedr rcciprocnl position. Using the
method evolved by one of them C-,vin, Teoriya rluchaynyVh protsessov I yeye pri-
meneniye v radiotekhn.1ke (Theory of random jivocesspri and its application In radio
engineering), second edJtlon, 'Iovel.:-,~~oyc lindlo, 190)], the nuthora deduce a gen-
eral expression (connisting rif a (,,~,Wlnuouv atul a discrete part) for the energy
spectrum F (W) of a randum sequence of groupn of pulses with a determined ca-
dence Interval. They utio this expression fnr the determinaLtIon of the energy
Card 1/2

M57
8/106/63/000/002/001/007
Energy spectra of group sligialn In rrn!ltichannel .... A05-5/;. 126
spectrum
F (W) chan 00 f. Pnynchr ( (4 + chan Xsynchr (8)
of the group SignAl in a synchLmnuus multichannel system with time-separation of
channels, under the assumption that the signal consists of m identical channel
pulses (n*l to n'm) and one synchronizing pulse (WO), the analysis being limit-
ed to the case where all the channels have Identical statistical and physical
characteristics. The authors next deduce three Lieparate formulae giving the
group energy spectrum In multichannel systems with pulse-amplitude, pulse-time
and pulse-duratlon modulation, respectively, account taken of both the useful and
parasitic modulation of pulses. There are 3 fig,_jres.
SVEMITTE s August 229, 1962
Card 2/2

~~O

Z~ t 'T
r'r
1W
631000/007/0021/0032
R-MCBMA&
CESS NR: 30 2 S
THOR: mvin.' 11A
Al
acesses
'TITLEt Some generalimatione in the theory of pulse random ]2r
_tt
SOURM Elektrosyyas~*~%o. 7. 1963, 21-32
TOPIC. TAGS: random process
-A.BSTRACT. - The theory of power. spectra of pulse processes Is extended over
"i the came when random pulse trains appear at determinate Intervals. Such pulse. -
random processes occur in multichannel pulse -code -modulation systems, in
statistically multiplexed channels p etc. Formulas are developed that describe
thl following cases: (1) a random number of standard pulses in specified
rptions; (2) constant-duration pulses at random separations; (3) a clipped
eiinal with determinate periods. Orig. art. has; 6 figures and 38 formulas.

LEV IN 0 B. R. tt_ :.. .
th ry of random prOcOBBOO in radio engineering.
Appueatibn Pf klm ' so 3-lol S-0 163. (MIRA l6tl2)
no.5110
Izv. All SSSR

ISVINg B.R.) SEROVP
.stribution
p4&otokh. J
VsV*
of the periodic function of a random Tlant"YO
slektron. 9 no.6:1065-lo67 Js 164. (MMA 17:7)