Class information for:
Level 1: FERROELECTRETS//PIEZOELECTRET//ELECTRET

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
8 4 POLYMER SCIENCE//CHEMISTRY, PHYSICAL//MATERIALS SCIENCE, MULTIDISCIPLINARY 1554940
446 3       IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION//PARTIAL DISCHARGE//IEEE TRANSACTIONS ON ELECTRICAL INSULATION 27012
1879 2             FERROELECTRIC POLYMER//PVDF TRFE//PVDF 6348
17803 1                   FERROELECTRETS//PIEZOELECTRET//ELECTRET 609

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FERROELECTRETS authKW 1764961 6% 95% 36
2 PIEZOELECTRET authKW 1043347 4% 81% 25
3 ELECTRET authKW 808322 11% 23% 68
4 CHARGE STABILITY authKW 349748 2% 48% 14
5 CELLULAR POLYPROPYLENE authKW 281750 1% 78% 7
6 CELLULAR ELECTRETS authKW 258753 1% 100% 5
7 CELLULAR POLYPROPYLENE FILM authKW 258753 1% 100% 5
8 SHEAR PIEZOELECTRICITY authKW 258753 1% 100% 5
9 POHL SOLID STATE PHYS address 224310 8% 9% 46
10 POROUS POLYTETRAFLUOROETHYLENE authKW 207002 1% 100% 4

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Physics, Applied 2318 40% 0% 246
2 Engineering, Electrical & Electronic 918 24% 0% 149
3 Polymer Science 521 12% 0% 73
4 Materials Science, Multidisciplinary 323 19% 0% 116
5 Materials Science, Paper & Wood 209 2% 0% 14
6 Instruments & Instrumentation 170 6% 0% 37
7 Acoustics 104 3% 0% 17
8 Materials Science, Textiles 77 1% 0% 8
9 Physics, Multidisciplinary 69 7% 0% 40
10 Engineering, General 46 3% 0% 16

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 POHL SOLID STATE PHYS 224310 8% 9% 46
2 TELECOMMUN TECHNOL 187814 2% 26% 14
3 PL CONDENSED MATTER PHYS 158478 1% 44% 7
4 ELE ET ITS PLICAT 118283 1% 57% 4
5 MECH MET CONTAINING POLYMER SYST 77623 0% 50% 3
6 PROC TECHNOL POLYMERS COMPOSITE MAT 68999 0% 67% 2
7 AUTONOMOUS REG ENGN 51751 0% 100% 1
8 DARMSTADT ARBEITSGRP 51751 0% 100% 1
9 ELECT DISPLAY TEDREC 51751 0% 100% 1
10 ELECT TECNOL COMP PROYECTORS 51751 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION 29047 8% 1% 51
2 JOURNAL OF ELECTROSTATICS 28061 6% 1% 38
3 IEEE TRANSACTIONS ON ELECTRICAL INSULATION 8068 2% 1% 15
4 SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 7986 1% 2% 7
5 ACTA PHYSICA SINICA 2257 5% 0% 30
6 APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 2056 4% 0% 24
7 FERROELECTRICS 1774 3% 0% 21
8 FIBRE CHEMISTRY 1399 1% 1% 5
9 JOURNAL OF PHYSICS D-APPLIED PHYSICS 1237 4% 0% 23
10 JAPANESE JOURNAL OF APPLIED PHYSICS 1227 3% 0% 20

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 FERROELECTRETS 1764961 6% 95% 36 Search FERROELECTRETS Search FERROELECTRETS
2 PIEZOELECTRET 1043347 4% 81% 25 Search PIEZOELECTRET Search PIEZOELECTRET
3 ELECTRET 808322 11% 23% 68 Search ELECTRET Search ELECTRET
4 CHARGE STABILITY 349748 2% 48% 14 Search CHARGE+STABILITY Search CHARGE+STABILITY
5 CELLULAR POLYPROPYLENE 281750 1% 78% 7 Search CELLULAR+POLYPROPYLENE Search CELLULAR+POLYPROPYLENE
6 CELLULAR ELECTRETS 258753 1% 100% 5 Search CELLULAR+ELECTRETS Search CELLULAR+ELECTRETS
7 CELLULAR POLYPROPYLENE FILM 258753 1% 100% 5 Search CELLULAR+POLYPROPYLENE+FILM Search CELLULAR+POLYPROPYLENE+FILM
8 SHEAR PIEZOELECTRICITY 258753 1% 100% 5 Search SHEAR+PIEZOELECTRICITY Search SHEAR+PIEZOELECTRICITY
9 POROUS POLYTETRAFLUOROETHYLENE 207002 1% 100% 4 Search POROUS+POLYTETRAFLUOROETHYLENE Search POROUS+POLYTETRAFLUOROETHYLENE
10 EMFI 169360 1% 55% 6 Search EMFI Search EMFI

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 23402 MICROPHONE//SILICON MICROPHONE//CONDENSER MICROPHONE
2 38226 CONTACT THERMOOXIDATION//ETHYLENE PROPYLENE DICYCLOPENTADIENE TERPOLYMER//LAYERED METAL COMPOSITE
3 28962 E ACTUATOR//ELECTRO ACTIVE PAPER//ELECTRO ACTIVE PAPER EAPAP
4 36815 RADIO ENGN K13137//11 MASS//AUTOMATION ASSEMBLY SYSTEM
5 499 FERROELECTRIC POLYMER//PVDF TRFE//PVDF
6 1670 IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION//SPACE CHARGE//ELECTRICAL TREE
7 11199 SURFACE FLASHOVER//IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION//NON STANDARD LIGHTNING IMPULSE WAVEFORM
8 38062 HBEREICH PHYS CHEM WISS//KOHOPU KU//CHARGE CONTROL ADDITIVE
9 36853 CHARGE MOTION ON SURFACES//DEEPER TRAPS//ELE ON ION PHYS GRP
10 34695 LEHRSTUHL STAHL HOLZBAU//ASSEMBLY COMPONENT//AXIOM OF CONSTANT STRESS

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