Class information for:
Level 1: MOLECULAR FRAGMENT CALCULATIONS//NONLOCAL REPRESENTATION//INVEST BASICA PROC

Basic class information

Class id #P Avg. number of
references
Database coverage
of references
32000 145 29.3 23%



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
5 4 CHEMISTRY, ORGANIC//CHEMISTRY, INORGANIC & NUCLEAR//CHEMISTRY, MULTIDISCIPLINARY 1745167
3 3       PHYSICS, ATOMIC, MOLECULAR & CHEMICAL//JOURNAL OF CHEMICAL PHYSICS//CHEMISTRY, PHYSICAL 183883
1332 2             SLATER TYPE ORBITALS//INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY//PHYSICS, ATOMIC, MOLECULAR & CHEMICAL 8380
32000 1                   MOLECULAR FRAGMENT CALCULATIONS//NONLOCAL REPRESENTATION//INVEST BASICA PROC 145

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 MOLECULAR FRAGMENT CALCULATIONS authKW 210590 1% 100% 1
2 NONLOCAL REPRESENTATION authKW 210590 1% 100% 1
3 INVEST BASICA PROC address 105294 1% 50% 1
4 OPTIKA I SPEKTROSKOPIYA journal 44585 26% 1% 38
5 PYRROLE OLIGOMERS authKW 42116 1% 20% 1
6 VECTOR COUPLING COEFFICIENTS authKW 35097 1% 17% 1
7 COULOMB OPERATOR authKW 30083 1% 14% 1
8 EXCHANGE OPERATOR authKW 26322 1% 13% 1
9 MOLEC ENGN address 10026 1% 5% 1
10 THEORETICA CHIMICA ACTA journal 9722 6% 1% 8

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 Spectroscopy 2385 35% 0% 51
2 Optics 1100 37% 0% 53
3 Chemistry, Physical 586 43% 0% 62
4 Physics, Atomic, Molecular & Chemical 271 18% 0% 26
5 Chemistry, Inorganic & Nuclear 174 13% 0% 19
6 Mathematics, Interdisciplinary Applications 94 6% 0% 9
7 Physics, Multidisciplinary 2 3% 0% 5
8 Computer Science, Interdisciplinary Applications 1 1% 0% 2
9 Multidisciplinary Sciences 1 1% 0% 1
10 Physics, Mathematical 1 1% 0% 2

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 INVEST BASICA PROC 105294 1% 50% 1
2 MOLEC ENGN 10026 1% 5% 1
3 PETRODVORETS BRANCH 898 1% 0% 1
4 ZENTRUM MAT WISSEN 732 1% 0% 1
5 SI VAVILOV STATE OPT 504 1% 0% 1
6 MATH COMP SCI 361 6% 0% 8
7 THEORET PL MECH 121 1% 0% 1
8 GEN INORGAN CHEM 41 1% 0% 1
9 HBEREICH CHEM 36 1% 0% 1
10 SIBERIAN 15 1% 0% 1

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 OPTIKA I SPEKTROSKOPIYA 44585 26% 1% 38
2 THEORETICA CHIMICA ACTA 9722 6% 1% 8
3 JOURNAL OF STRUCTURAL CHEMISTRY 7815 10% 0% 15
4 OPTICS AND SPECTROSCOPY 3093 6% 0% 9
5 INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY 1526 6% 0% 9
6 ZHURNAL FIZICHESKOI KHIMII 494 3% 0% 5
7 STUDIA BIOPHYSICA 441 1% 0% 2
8 IZVESTIYA AKADEMII NAUK SSSR SERIYA FIZICHESKAYA 378 2% 0% 3
9 ZHURNAL NEORGANICHESKOI KHIMII 350 3% 0% 4
10 JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM 290 3% 0% 4

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 MOLECULAR FRAGMENT CALCULATIONS 210590 1% 100% 1 Search MOLECULAR+FRAGMENT+CALCULATIONS Search MOLECULAR+FRAGMENT+CALCULATIONS
2 NONLOCAL REPRESENTATION 210590 1% 100% 1 Search NONLOCAL+REPRESENTATION Search NONLOCAL+REPRESENTATION
3 PYRROLE OLIGOMERS 42116 1% 20% 1 Search PYRROLE+OLIGOMERS Search PYRROLE+OLIGOMERS
4 VECTOR COUPLING COEFFICIENTS 35097 1% 17% 1 Search VECTOR+COUPLING+COEFFICIENTS Search VECTOR+COUPLING+COEFFICIENTS
5 COULOMB OPERATOR 30083 1% 14% 1 Search COULOMB+OPERATOR Search COULOMB+OPERATOR
6 EXCHANGE OPERATOR 26322 1% 13% 1 Search EXCHANGE+OPERATOR Search EXCHANGE+OPERATOR
7 MOLECULAR FRAGMENTS 7018 1% 3% 1 Search MOLECULAR+FRAGMENTS Search MOLECULAR+FRAGMENTS
8 TRANSITION ENERGIES 6791 1% 3% 1 Search TRANSITION+ENERGIES Search TRANSITION+ENERGIES
9 OPEN SHELL 5848 1% 3% 1 Search OPEN+SHELL Search OPEN+SHELL
10 HARTREE FOCK METHOD 2262 1% 1% 1 Search HARTREE+FOCK+METHOD Search HARTREE+FOCK+METHOD

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 MALYKHANOV, YB , PRAVOSUDOV, RN , (2000) HARTREE-FOCK-ROOTHAAN CALCULATIONS OF DIPOLAR POLARIZABILITIES FOR CLOSED-SHELL ATOMS.JOURNAL OF STRUCTURAL CHEMISTRY. VOL. 41. ISSUE 3. P. 355-361 4 100% 0
2 ZILITIS, VA , (1992) THEORETICAL DETERMINATION OF OSCILLATOR-STRENGTHS FOR PRINCIPAL SERIES OF POTASSIUM-LIKE IONS BASED ON THE DIRAC-FOCK METHOD.OPTIKA I SPEKTROSKOPIYA. VOL. 72. ISSUE 4. P. 801-804 5 100% 1
3 GRUZDEV, PF , SOLOVYOVA, MS , SHERSTYUK, AI , (1990) USE OF EXPANSION ON DISCRETE BASIS OF HARTRY-FOCK VIRTUAL STURM-TYPE ORBITALS FOR EVALUATION OF PARAMETERS OF INTERACTION OF MANY-ELECTRON ATOMS WITH EXTERNAL FIELDS.IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII FIZIKA. VOL. 33. ISSUE 8. P. 73-85 6 86% 2
4 PRIMORAC, M , KOVACEVIC, K , MAKSIC, ZB , (1990) HERMITE-GAUSSIAN EXPANSION OF HYDROGENIC ORBITALS.CROATICA CHEMICA ACTA. VOL. 62. ISSUE 4. P. 561-577 5 100% 0
5 MONTAGNANI, R , SALVETTI, O , (1989) APPROXIMATE CALCULATION OF THE MATRIX-ELEMENTS OF COULOMB AND EXCHANGE OPERATORS FOR THE CORE ELECTRONS OF THE ATOMS IN THROUGH XE.THEORETICA CHIMICA ACTA. VOL. 76. ISSUE 1. P. 1-5 5 100% 0
6 ZILITIS, VA , (2015) THE RELATION BETWEEN THE WAVE FUNCTIONS OF DISCRETE AND CONTINUUM SPECTRA AND THE FERMI-SEGRE FORMULA.OPTICS AND SPECTROSCOPY. VOL. 118. ISSUE 4. P. 501 -505 2 100% 0
7 GRUZDEV, PF , SOLOVEVA, GS , SHERSTYUK, AI , (1991) POLARIZABILITY OF ATOMIC SODIUM AND POTASSIUM EXCITED-STATES.OPTIKA I SPEKTROSKOPIYA. VOL. 71. ISSUE 6. P. 888-894 4 100% 2
8 POLYAKOV, VI , ANISOCHKINA, EN , (1997) SETTING THE BOUNDARY CONDITIONS BY THE POTENTIAL SHIFT IN THE SELF-CONSISTENT FIELD (X ALPHA-SCATTERED WAVE) CLUSTER CALCULATIONS.JOURNAL OF STRUCTURAL CHEMISTRY. VOL. 38. ISSUE 1. P. 18-24 3 100% 0
9 POLYAKOV, VI , ANISOCHKINA, EN , (1997) BOUNDARY CONDITIONS FOR CALCULATING THE PROPERTIES OF IONIC CRYSTALS BY THE SELF-CONSISTENT FIELD SCATTERED-WAVE X-ALPHA METHOD WITHIN THE FRAMEWORK OF THE MOLECULAR CLUSTER MODEL.ZHURNAL FIZICHESKOI KHIMII. VOL. 71. ISSUE 7. P. 1244-1247 3 100% 0
10 PRIMORAC, M , (1989) COMPUTATION OF MOLECULAR INTEGRALS OVER PARTIALLY GENERALIZED HERMITE-GAUSSIAN FUNCTIONS.JOURNAL OF COMPUTATIONAL PHYSICS. VOL. 84. ISSUE 2. P. 474-482 4 100% 0

Classes with closest relation at Level 1



Rank Class id link
1 36342 ENVIRONM AQUAT ECOL//MOL BIOTECHOL//KRISTALLOGRAFIYA
2 34563 DECAYING PHENOMENA//LIOUVILLIAN APPROACH//LIOUVILLIAN SELF ENERGIES
3 20283 LIGAND ADDITIVITY//CORE ELECTRON IONIZATION ENERGY//CPFECO2I
4 26669 NON KOOPMAN STATE//CNDO CALCULATIONS//CANONICAL MOS
5 24207 ONE ELECTRON DENSITY MATRIX//CHARGE BOND ORDER MATRIX//DIRECT THROUGH SPACE AND INDIRECT THROUGH BOND INTERACTIONS
6 13763 SLATER TYPE ORBITALS//OVERLAP INTEGRALS//MOLECULAR INTEGRALS
7 35905 C 1S CORE LEVEL SHIFTS//CARBA//ESCA CORE LEVEL SHIFTS
8 34373 MECH MACHINE RELIABIL//AL FE BASE ALLOY//AL FE BASED ALLOY
9 9546 CHEMICAL HAMILTONIAN APPROACH//SYMMETRY ADAPTED PERTURBATION THEORY//BASIS SET SUPERPOSITION ERROR
10 11873 ELECTRON PAIR DENSITY//PL CHEM UNIT//EXTRACULE DENSITY

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