Class information for:
Level 2: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT//METROLOGIA//AVOGADRO CONSTANT

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
1991 5062 15.5 44%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 3)


ID, lev.
above		 Publications Label for level above
616 10808 METROLOGIA//IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT//AVOGADRO CONSTANT

Classes in level below (level 1)


ID, lev. below Publications Label for level below
9424 1088 AVOGADRO CONSTANT//KILOGRAM//WATT BALANCE
11994 875 LIDFT//ADC TESTING//INTERPOLATED DFT
12456 841 AC DC TRANSFER//THERMAL CONVERTERS//AC DC DIFFERENCE
13247 786 CONSENSUS RELATION//STAT ENGN//DEGREE OF EQUIVALENCE
13595 762 JOSEPHSON ARRAYS//VOLTAGE STANDARD//JOSEPHSON VOLTAGE STANDARD
15759 624 CRYOGENIC CURRENT COMPARATOR//AC QUANTUM HALL EFFECT//CURRENT COMPARATORS
33708 86 BUILD UP SYSTEM//TORQUE STANDARD//DEADWEIGHT FORCE MACHINE

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of publ.
in class
1 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT Journal 312 18% 31% 1544
2 METROLOGIA Journal 177 24% 13% 634
3 AVOGADRO CONSTANT Author keyword 134 87% 1% 66
4 KILOGRAM Author keyword 120 91% 1% 50
5 WATT BALANCE Author keyword 111 88% 1% 52
6 VOLTAGE STANDARD Author keyword 88 85% 1% 46
7 JOSEPHSON ARRAYS Author keyword 83 74% 1% 62
8 AC DC TRANSFER Author keyword 67 85% 1% 35
9 JOSEPHSON VOLTAGE STANDARD Author keyword 64 88% 1% 30
10 THERMAL CONVERTER Author keyword 50 72% 1% 39

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 AVOGADRO CONSTANT 134 87% 1% 66 Search AVOGADRO+CONSTANT Search AVOGADRO+CONSTANT
2 KILOGRAM 120 91% 1% 50 Search KILOGRAM Search KILOGRAM
3 WATT BALANCE 111 88% 1% 52 Search WATT+BALANCE Search WATT+BALANCE
4 VOLTAGE STANDARD 88 85% 1% 46 Search VOLTAGE+STANDARD Search VOLTAGE+STANDARD
5 JOSEPHSON ARRAYS 83 74% 1% 62 Search JOSEPHSON+ARRAYS Search JOSEPHSON+ARRAYS
6 AC DC TRANSFER 67 85% 1% 35 Search AC+DC+TRANSFER Search AC+DC+TRANSFER
7 JOSEPHSON VOLTAGE STANDARD 64 88% 1% 30 Search JOSEPHSON+VOLTAGE+STANDARD Search JOSEPHSON+VOLTAGE+STANDARD
8 THERMAL CONVERTER 50 72% 1% 39 Search THERMAL+CONVERTER Search THERMAL+CONVERTER
9 THERMAL CONVERTERS 48 91% 0% 20 Search THERMAL+CONVERTERS Search THERMAL+CONVERTERS
10 CRYOGENIC CURRENT COMPARATOR 41 87% 0% 20 Search CRYOGENIC+CURRENT+COMPARATOR Search CRYOGENIC+CURRENT+COMPARATOR

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 AVOGADRO CONSTANT 191 80% 2% 119
2 KILOGRAM 187 70% 3% 154
3 PLANCK CONSTANT 75 83% 1% 43
4 VOLTAGE STANDARD 57 67% 1% 52
5 QUANTIZED HALL RESISTANCE 46 55% 1% 58
6 WATT BALANCE 44 77% 1% 30
7 OHM 44 88% 0% 21
8 VOLTAGE STANDARDS 41 65% 1% 39
9 KEY COMPARISON DATA 34 65% 1% 32
10 INTERPOLATION ALGORITHMS 32 65% 1% 30

Journals


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of publ.
in class
1 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT 312 18% 31% 1544
2 METROLOGIA 177 24% 13% 634
3 PTB-MITTEILUNGEN 21 25% 1% 74
4 MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA 10 19% 1% 47
5 METROLOGY AND MEASUREMENT SYSTEMS 9 13% 1% 66

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
Watt balance experiments for the determination of the Planck constant and the redefinition of the kilogram 2013 24 35 94%
History and progress on accurate measurements of the Planck constant 2013 19 84 89%
CODATA recommended values of the fundamental physical constants: 1998 2000 588 371 36%
Application of the Josephson effect in electrical metrology 2009 36 104 93%
Towards a new SI: a review of progress made since 2011 2014 5 44 77%
Determination of the Planck constant by means of a watt balance 2009 35 49 94%
Precisely measuring the Planck constant by electromechanical balances 2012 11 44 91%
CODATA recommended values of the fundamental physical constants: 1998 1999 202 367 35%
The Avogadro constant determination via enriched silicon-28 2009 20 77 90%
Josephson voltage standards 2000 75 69 96%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 MEASUREMENT STAND NEW ZEALAND 12 39% 0.5% 24
2 STAT ENGN 11 20% 1.0% 49
3 TECHNOL ADMUS COMMERCE 9 83% 0.1% 5
4 QUANTUM ELECT METROL 8 46% 0.3% 13
5 VNIIM 8 48% 0.2% 12
6 CENT IND ELECT 6 80% 0.1% 4
7 ELECT ENGN FUNDAMENTALS MEASUREMENTS 6 71% 0.1% 5
8 MEASUREMENT 6 13% 0.9% 44
9 MECH MET ENGN 6 23% 0.4% 21
10 QUANTUM METROL GRP 6 100% 0.1% 4

Related classes at same level (level 2)


Rank Relatedness score Related classes
1 0.0000012575 METROLOGIA//ITS 90//METROL QUAL MIRS UL FE LMK
2 0.0000011522 INTRINSIC JOSEPHSON JUNCTION//IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY//RSFQ
3 0.0000011064 DANISH PRIMARY ACOUST//PNEUMATIC BEARING//INERTIAL FORCE
4 0.0000008947 PULSED FIELD MAGNETOMETER//DEMAGNETIZING CORRECTION//FLUXMETRIC DEMAGNETIZING FACTOR
5 0.0000008852 ACCREDITATION AND QUALITY ASSURANCE//PROFICIENCY TESTING//MEASUREMENT UNCERTAINTY
6 0.0000006648 PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY//COORDINATE MEASURING MACHINES//COORDINATE METROLOGY
7 0.0000005746 FLUXGATE//FLUXGATE SENSOR//FLUXGATE SENSORS
8 0.0000004726 PERMITTIVITY MEASUREMENT//PL MICROWAVE NONDESTRUCT TESTING//COMPLEX PERMITTIVITY
9 0.0000004717 ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING//CURRENT CONVEYORS//IEEE JOURNAL OF SOLID-STATE CIRCUITS
10 0.0000004451 IEEE TRANSACTIONS ON POWER SYSTEMS//IEEE TRANSACTIONS ON POWER DELIVERY//INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS