Class information for:
Level 1: ACCREDITATION AND QUALITY ASSURANCE//PROFICIENCY TESTING//MEASUREMENT UNCERTAINTY

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
6053 1538 17.7 39%


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
4 4 ENVIRONMENTAL SCIENCES//GEOSCIENCES, MULTIDISCIPLINARY//METEOROLOGY & ATMOSPHERIC SCIENCES 1766162
95 3       CHEMISTRY, ANALYTICAL//JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY//SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY 76493
2202 2             ACCREDITATION AND QUALITY ASSURANCE//PROFICIENCY TESTING//MEASUREMENT UNCERTAINTY 4864
6053 1                   ACCREDITATION AND QUALITY ASSURANCE//PROFICIENCY TESTING//MEASUREMENT UNCERTAINTY 1538

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ACCREDITATION AND QUALITY ASSURANCE journal 3407023 30% 37% 468
2 PROFICIENCY TESTING authKW 969624 12% 27% 182
3 MEASUREMENT UNCERTAINTY authKW 487343 11% 15% 164
4 REFERENCE MATERIALS authKW 269875 8% 11% 122
5 METROLOGY IN CHEMISTRY authKW 262526 1% 58% 23
6 HOMOGENEITY STUDY authKW 190577 1% 80% 12
7 PROFICIENCY TESTING SCHEME authKW 186383 1% 72% 13
8 E N NUMBERS authKW 160801 1% 90% 9
9 NOTIFIED ANALYTICAL METHOD authKW 138966 0% 100% 7
10 ASSIGNED VALUE authKW 132342 1% 67% 10

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Chemistry, Analytical 42848 70% 0% 1083
2 Instruments & Instrumentation 18691 35% 0% 533
3 Food Science & Technology 2187 15% 0% 224
4 Biochemical Research Methods 186 5% 0% 71
5 Spectroscopy 98 3% 0% 44
6 Chemistry, Applied 89 3% 0% 47
7 Medicine, Legal 23 1% 0% 8
8 Toxicology 22 2% 0% 30
9 Chemistry, Multidisciplinary 21 6% 0% 89
10 Materials Science, Characterization, Testing 18 1% 0% 9

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 REFERENCE MAT MEASUREMENTS 130274 5% 8% 79
2 EUROPEAN UNION REFERENCE CHEM ELEMENTS FOOD A 119113 0% 100% 6
3 ENVIRONM MEASUREMENT TESTING 82716 0% 83% 5
4 GEN COORDINAT ACCREDITAT CGCRE 79409 0% 100% 4
5 AQS BADEN WURTTEMBERG 59557 0% 100% 3
6 CELJE 59557 0% 100% 3
7 FOOD STAND AGCY 54969 0% 46% 6
8 PHARM FAFAR 52937 0% 67% 4
9 IRMM 50569 1% 12% 21
10 ABORATING GLOBAL ANTIMICROBIAL ISTANCE 39704 0% 100% 2

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ACCREDITATION AND QUALITY ASSURANCE 3407023 30% 37% 468
2 TRAC-TRENDS IN ANALYTICAL CHEMISTRY 53164 6% 3% 92
3 JOURNAL OF AOAC INTERNATIONAL 19996 5% 1% 71
4 FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY 6029 3% 1% 41
5 ANALYST 4978 4% 0% 61
6 MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA 4351 1% 3% 8
7 JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS 3364 1% 1% 21
8 ANALYTICAL METHODS 3139 2% 1% 31
9 JOURNAL OF THE FOOD HYGIENIC SOCIETY OF JAPAN 2695 1% 1% 14
10 METROLOGIA 2557 1% 1% 19

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 PROFICIENCY TESTING 969624 12% 27% 182 Search PROFICIENCY+TESTING Search PROFICIENCY+TESTING
2 MEASUREMENT UNCERTAINTY 487343 11% 15% 164 Search MEASUREMENT+UNCERTAINTY Search MEASUREMENT+UNCERTAINTY
3 REFERENCE MATERIALS 269875 8% 11% 122 Search REFERENCE+MATERIALS Search REFERENCE+MATERIALS
4 METROLOGY IN CHEMISTRY 262526 1% 58% 23 Search METROLOGY+IN+CHEMISTRY Search METROLOGY+IN+CHEMISTRY
5 HOMOGENEITY STUDY 190577 1% 80% 12 Search HOMOGENEITY+STUDY Search HOMOGENEITY+STUDY
6 PROFICIENCY TESTING SCHEME 186383 1% 72% 13 Search PROFICIENCY+TESTING+SCHEME Search PROFICIENCY+TESTING+SCHEME
7 E N NUMBERS 160801 1% 90% 9 Search E+N+NUMBERS Search E+N+NUMBERS
8 NOTIFIED ANALYTICAL METHOD 138966 0% 100% 7 Search NOTIFIED+ANALYTICAL+METHOD Search NOTIFIED+ANALYTICAL+METHOD
9 ASSIGNED VALUE 132342 1% 67% 10 Search ASSIGNED+VALUE Search ASSIGNED+VALUE
10 ISO IEC 17043 121593 0% 88% 7 Search ISO+IEC+17043 Search ISO+IEC+17043

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.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 DE ALBANO, FM , TEN CATEN, CS , (2014) PROFICIENCY TESTS FOR LABORATORIES: A SYSTEMATIC REVIEW.ACCREDITATION AND QUALITY ASSURANCE. VOL. 19. ISSUE 4. P. 245 -257 64 57% 1
2 THOMPSON, M , (2012) PRECISION IN CHEMICAL ANALYSIS: A CRITICAL SURVEY OF USES AND ABUSES.ANALYTICAL METHODS. VOL. 4. ISSUE 6. P. 1598-1611 33 89% 8
3 YIP, YC , TONG, WF , (2009) ASSESSING LABORATORY PERFORMANCE IN INTERCOMPARISONS FOR INORGANIC ANALYSIS.TRAC-TRENDS IN ANALYTICAL CHEMISTRY. VOL. 28. ISSUE 11. P. 1276 -1294 38 75% 5
4 DESIMONI, E , BRUNETTI, B , (2005) UNCERTAINTY OF MEASUREMENT: APPROACHES AND OPEN PROBLEMS.ANNALI DI CHIMICA. VOL. 95. ISSUE 5. P. 265-274 35 80% 4
5 FRANCISCO, FL , SAVIANO, AM , LOURENCO, FR , (2016) MEASURING UNCERTAINTY USING DIFFERENT APPROACHES: A CASE STUDY FOR ACETAMINOPHEN QUANTIFICATION.JOURNAL OF AOAC INTERNATIONAL. VOL. 99. ISSUE 3. P. 612 -617 25 81% 0
6 SAVIANO, AM , FRANCISCO, FL , LOURENCO, FR , (2014) RATIONAL DEVELOPMENT AND VALIDATION OF A NEW MICROBIOLOGICAL ASSAY FOR LINEZOLID AND ITS MEASUREMENT UNCERTAINTY.TALANTA. VOL. 127. ISSUE . P. 225 -229 28 72% 2
7 TANASE, IG , POPA, DE , UDRISTIOIU, GE , BUNACIU, AA , ABOUL-ENEIN, HY , (2015) ESTIMATION OF THE UNCERTAINTY OF THE MEASUREMENT RESULTS OF SOME TRACE LEVELS ELEMENTS IN DOCUMENT PAPER SAMPLES USING ICP-MS.RSC ADVANCES. VOL. 5. ISSUE 15. P. 11445 -11457 26 68% 3
8 TAVERNIERS, I , VAN BOCKSTAELE, E , DE LOOSE, M , (2004) TRENDS IN QUALITY IN THE ANALYTICAL LABORATORY. I. TRACEABILITY AND MEASUREMENT UNCERTAINTY OF ANALYTICAL RESULTS.TRAC-TRENDS IN ANALYTICAL CHEMISTRY. VOL. 23. ISSUE 7. P. 480 -490 26 84% 43
9 THOMPSON, M , ELLISON, SLR , WOOD, R , (2006) THE INTERNATIONAL HARMONIZED PROTOCOL FOR THE PROFICIENCY TESTING OF ANALYTICAL CHEMISTRY LABORATORIES (IUPAC TECHNICAL REPORT).PURE AND APPLIED CHEMISTRY. VOL. 78. ISSUE 1. P. 145-196 14 82% 313
10 KUSELMAN, I , FAJGELJ, A , (2010) IUPAC/CITAC GUIDE: SELECTION AND USE OF PROFICIENCY TESTING SCHEMES FOR A LIMITED NUMBER OF PARTICIPANTS CHEMICAL ANALYTICAL LABORATORIES (IUPAC TECHNICAL REPORT).PURE AND APPLIED CHEMISTRY. VOL. 82. ISSUE 5. P. 1099-1135 16 94% 11

Classes with closest relation at Level 1


Rank Class id link
1 31553 IMW PL MARINE//STANDARDS MEASUREMENTS AND TESTING PROGRAMME//STAND MEASUREMENTS TESTING PROGRAMME
2 22136 THEORY OF SAMPLING//THEORY OF SAMPLING TOS//SOIL SAMPLING
3 18346 ACCURACY PROFILE//TOTAL ERROR//ROBUSTNESS TESTING
4 23434 QUANTITATIVE NMR//QNMR//QUANTITATIVE NUCLEAR MAGNETIC RESONANCE
5 32065 ACCREDITATION AND QUALITY ASSURANCE//FOOD FOOD PROC QUAL//FRENCH SANITARY SECURITY AND HEALTH PRODUCTS AGENCY
6 16523 ROWAN LODGE//QUANTITATION LIMIT//BIVARIATE LEAST SQUARES
7 19626 HARNED CELL//ELECTROLYTIC CONDUCTIVITY//STOICHIOMETRIC DISSOCIATION CONSTANT
8 33630 COMPUTER AIDED QUALITY ASSURANCE//OBJECT DOMAIN//CIEMCIES MATEMAT INFORMAT
9 13325 METROLOGIA//MEASUREMENT UNCERTAINTY//COVERAGE INTERVAL
10 24496 JOURNAL OF THE ASSOCIATION OF PUBLIC ANALYSTS//KJELDAHL METHOD//DUMAS METHOD

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