Class information for:
Level 1: SPACE NUCL POWER STUDIES//SPACE NUCLEAR REACTOR//SPACE NUCLEAR POWER

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
21 4 THERMODYNAMICS//MECHANICS//ENGINEERING, MECHANICAL 471779
692 3       SPACE POLICY//JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER//RADIATIVE HEAT TRANSFER 8148
3997 2             SPACE NUCL POWER STUDIES//SPACE LAUNCHER//SPACE NUCLEAR REACTOR 804
31179 1                   SPACE NUCL POWER STUDIES//SPACE NUCLEAR REACTOR//SPACE NUCLEAR POWER 171

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SPACE NUCL POWER STUDIES address 1532112 19% 25% 33
2 SPACE NUCLEAR REACTOR authKW 589789 2% 80% 4
3 SPACE NUCLEAR POWER authKW 575964 3% 63% 5
4 SPACE REACTOR POWER SYSTEMS authKW 552929 2% 100% 3
5 SPACE REACTOR authKW 418880 3% 45% 5
6 ANAL MANAGEMENT BRANCH address 368619 1% 100% 2
7 THERMIONIC REACTOR authKW 368619 1% 100% 2
8 TOPAZ II authKW 368619 1% 100% 2
9 LIQUID METAL COOLANTS authKW 245745 1% 67% 2
10 LUNAR SURFACE POWER authKW 245745 1% 67% 2

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Engineering, Aerospace 4878 26% 0% 44
2 Nuclear Science & Technology 3896 44% 0% 75
3 Energy & Fuels 215 12% 0% 21
4 Engineering, Mechanical 156 11% 0% 18
5 Thermodynamics 110 7% 0% 12
6 Mechanics 33 6% 0% 10
7 Materials Science, Multidisciplinary 20 11% 0% 19
8 Mining & Mineral Processing 18 1% 0% 2
9 Engineering, General 9 2% 0% 4
10 Mineralogy 8 1% 0% 2

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SPACE NUCL POWER STUDIES 1532112 19% 25% 33
2 ANAL MANAGEMENT BRANCH 368619 1% 100% 2
3 NUCL SCI ENGN PROGRAM 209435 3% 23% 5
4 AV SYST TECHNOL TECH STAFF 184310 1% 100% 1
5 CSNR 184310 1% 100% 1
6 EM32 184310 1% 100% 1
7 FEIIT 184310 1% 100% 1
8 JET PROP ELECT POWER SECT 184310 1% 100% 1
9 JOHN H GLENN LEWIS FELD 184310 1% 100% 1
10 JOHNSON SPACE AGCY 184310 1% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF PROPULSION AND POWER 25537 15% 1% 25
2 NUCLEAR TECHNOLOGY 11652 10% 0% 17
3 PROGRESS IN NUCLEAR ENERGY 10315 7% 0% 12
4 NUCLEAR ENGINEERING AND DESIGN 5555 10% 0% 17
5 SPACE POWER 3349 1% 2% 1
6 ANNALS OF NUCLEAR ENERGY 3079 6% 0% 10
7 ACTA ASTRONAUTICA 2462 5% 0% 9
8 JBIS-JOURNAL OF THE BRITISH INTERPLANETARY SOCIETY 2374 1% 1% 2
9 JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME 2147 3% 0% 5
10 ATOMKERNENERGIE-KERNTECHNIK 1491 1% 0% 2

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 SPACE NUCLEAR REACTOR 589789 2% 80% 4 Search SPACE+NUCLEAR+REACTOR Search SPACE+NUCLEAR+REACTOR
2 SPACE NUCLEAR POWER 575964 3% 63% 5 Search SPACE+NUCLEAR+POWER Search SPACE+NUCLEAR+POWER
3 SPACE REACTOR POWER SYSTEMS 552929 2% 100% 3 Search SPACE+REACTOR+POWER+SYSTEMS Search SPACE+REACTOR+POWER+SYSTEMS
4 SPACE REACTOR 418880 3% 45% 5 Search SPACE+REACTOR Search SPACE+REACTOR
5 THERMIONIC REACTOR 368619 1% 100% 2 Search THERMIONIC+REACTOR Search THERMIONIC+REACTOR
6 TOPAZ II 368619 1% 100% 2 Search TOPAZ+II Search TOPAZ+II
7 LIQUID METAL COOLANTS 245745 1% 67% 2 Search LIQUID+METAL+COOLANTS Search LIQUID+METAL+COOLANTS
8 LUNAR SURFACE POWER 245745 1% 67% 2 Search LUNAR+SURFACE+POWER Search LUNAR+SURFACE+POWER
9 OPERATION LIFE 245745 1% 67% 2 Search OPERATION+LIFE Search OPERATION+LIFE
10 SOLAR DYNAMIC POWER 245745 1% 67% 2 Search SOLAR+DYNAMIC+POWER Search SOLAR+DYNAMIC+POWER

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1


rank cluster_id2 link
1 32032 OFC SPACE FLIGHT//SPACE POWER GENERATION//SPACE SYST OPERAT
2 29671 JUMPING ROBOT//ESCAPE MOVEMENTS//BIONIC LOCUST ROBOT
3 26105 SMALL MODULAR REACTORS//OFF PL METHODS//ATW-INTERNATIONAL JOURNAL FOR NUCLEAR POWER
4 35377 BPG ELECTRODE//PLATINUM FAMILY METALS//SULFATO BRIDGED COMPLEXES
5 30168 10303//ADVANCED NIMONICS//APP USAGE
6 35793 HYDROXYLAMMONIUM NITRATE//GREEN PROPELLANT//HYDROXYL AMMONIUM NITRATE
7 36423 KLAUS FUCHS//RFYATS//STANISLAW ULAM
8 29536 BETAVOLTAIC//NUCLEAR BATTERY//BETAVOLTAIC BATTERY
9 18389 XENON OSCILLATIONS//POWER LEVEL CONTROL//LOAD FOLLOW OPERATION
10 34668 EXTRAVEHICULAR ACTIVITY//SPACE SUIT//EXTRAVEHICULAR MOBILITY UNIT

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