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  • Entropy  (4)
  • Charge-transfer complexes  (2)
  • Greengram  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A univariate model for long-term streamflow forecasting (1991)
    Springer
    Stochastic environmental research and risk assessment 5 (1991), S. 173-188 
    Details
    ISSN: 1436-3259
    Keywords: Entropy ; spectral analysis ; streamflow forecasting ; univariate model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract This paper, the first in a series of two, employs the principle of maximum entropy (POME) via maximum entropy spectral analysis (MESA) to develop a univariate model for long-term streamflow forecasting. Three cases of streamflow forecasting are investigated: forward forecasting, backward forecasting (or reconstruction) and intermittent forecasting (or filling in missing records). Application of the model is discussed in the second paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01544056
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  • 2
    Electronic Resource
    Electronic Resource
    Dielectric studies of molecular complexes ofDDT with some compounds of biological interest (1981)
    Springer
    Monatshefte für Chemie 112 (1981), S. 1129-1134 
    Details
    ISSN: 1434-4475
    Keywords: Charge-transfer complexes ; DDT ; Dipole moments ; Equilibrium constants ; Indoles ; Molecular complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden Molekülkomplexe vonDDT (als Acceptor) mit einigen Verbindungen von biologischem Interesse (als Donoren: Indol, 2-Methyl-indol, 3-Methyl-indol, Benzol und Naphthalin) mittels Brechungsindex,Guggenheim-Methode und dielektrischer Titration untersucht. Dipolmomentberechnungen ergaben, daß die intermolekulare Wechselwirkung von einer Anziehung induzierter Dipol-Dipol bestimmt wird; es wurde auch der charge-transfer-Anteil des Dipolmoments abgeschätzt. Alle diese Daten unterstützen die Annahme der charge-transfer-Komplexierung vonDDT.
    Notes: Abstract The molecular complexation ofDDT (acceptor) with some compounds of biological interest as donors (e.g. indole, 2-methylindole, 3-methylindole, benzene and naphthalene) have been studied using refractive index,Guggenheim and dielectric titration plot methods. The interaction between these donors with solvents (CCl4 and C6H6) have also been observed by calculating μind through μind=μsol−μinert. These data have shown that the molecular interaction between polar solutes and non-polar aromatics is governed by dipole-induced dipole electrostatic attraction. The dipole moment obtained due to charge transfer (μDA) has also been calculated and found that its value increases with the increase in the extent of interaction between donor and acceptor. These data support the charge-transfer complex formation hypothesis for the mode of action ofDDT on molecular level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00905467
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  • 3
    Electronic Resource
    Electronic Resource
    Refractometric studies of molecular complexes ofDDT with some compounds of biological interest (1981)
    Springer
    Monatshefte für Chemie 112 (1981), S. 935-943 
    Details
    ISSN: 1434-4475
    Keywords: Charge-transfer complexes ; DDT ; Electronic polarization ; Equilibrium constants ; Indoles ; Refractometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurde die Bildung von Molekülkomplexen zwischenDDT als Acceptor und Indol, 2-Methyl-indol, 3-Methyl-indol, Benzol und Naphthalin als Donor in CCl4 mittels Refraktometrie und differenzieller Refraktometrie untersucht. Es wurde1∶1-Stöchiometrie der Komplexe festgestellt, Gleichgewichtskonstanten und das Ausmaß der Elektronenpolarisation wurden berechnet. Zwei Typen von Komplexen wurden beobachtet; in einem Fall erfolgt die Assoziation primär über die Benzhydryltrichlormethyl-Gruppierung desDDT, im anderen Fall über π-Elektronenwechselwirkungen. Die Daten unterstützen ein chargetransfer-Modell der Komplexbildung vonDDT mit geeigneten Donormolekülen.
    Notes: Abstract Formation of molecular complexes betweenDDT as acceptor and indole, 2-methylindole, 3-methylindole, benzene and naphthalene as donors have been studied in carbon tetrachloride using refractometric and differential refractometric measurements. Titration techniques through these measurements have indicated1∶1 stoichiometry of these complexes. Equilibrium constants (K 1) and extent of electronic polarization were calculated. Two types of complexes were observed, one association involving primarily the benzhydryltrichloromethyl grouping ofDDT with a polar complexing agents, and the other interaction of theDDT aromatic π-electron system with π-electrons of donors in the complexing molecule. These data support the charge-transfer complex formation hypothesis for the mode of action ofDDT on molecular level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00905065
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  • 4
    Electronic Resource
    Electronic Resource
    Comparison of single seed descent, selective intermating and mass selection for seed size in greengram (Vigna radiata (L.) Wilczek) (1986)
    Springer
    Theoretical and applied genetics 72 (1986), S. 678-681 
    Details
    ISSN: 1432-2242
    Keywords: Greengram ; Vigna radiata ; SSD ; Mass selection ; Intermating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Three selection methods (single seed descent (SSD), mass selection and selective intermating) were applied simultaneously to a highly heterogeneous and broadly based population of greengram. Progeny developing after two cycles of selection were evaluated for yield and seven other economic characters. The relative efficacy of each selection method was judged on the basis of the number of high yielding progeny, mean yield of top 10% progeny, and mean of the highest yielding progeny. Selection after two cycles of selective intermating was found to be the best method for generating productive progeny although mass selection favouring smaller seeds was an equally efficient method. Both of these were found superior to SSD selection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00289008
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Comparative efficacy of pedigree selection and selective intermating in greengram (Vigna radiata (L.) Wilczek) (1985)
    Springer
    Theoretical and applied genetics 71 (1985), S. 129-132 
    Details
    ISSN: 1432-2242
    Keywords: Greengram ; Vigna radiata ; Selective intermating ; Pedigree selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Selective intermating and pedigree selection methods were applied simultaneously to highly heterogeneous and heterozygous base populations of greengram in order to compare their relative efficacy in terms of evolving the number of productive lines as well as their production potential. Selection after two cycles of selective intermating was found to be a better method than traditional pedigree selection. The demerits of pedigree selection and merits of selective intermating are discussed. It is suggested that selective intermating replace the widely adopted but less effective pedigree selection for generating promising new material in such autogamous crops as greengram.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00278265
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Evaluation of rainfall networks using entropy: II. Application (1992)
    Springer
    Water resources management 6 (1992), S. 295-314 
    Details
    ISSN: 1573-1650
    Keywords: Entropy ; isoinformation contours ; maximum entropy ; rainfall networks ; variance reduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract This paper, the second in the series, applies the entropy approach to space and time evaluation of rainfall networks in Louisiana. The evaluation is made for five sampling intervals: daily, 2-day, weekly, monthly, and yearly, and for two separate seasons. In each case, the best combination of raingages is suggested and the lines of equal information (isoinformation contours) are constructed showing the areas of greater or less information transfer. The isoinformation lines are especially suitable in decisions concerning the expansion of the existing network or deleting the unnecessary raingages.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872282
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  • 7
    Electronic Resource
    Electronic Resource
    Evaluation of rainfall networks using entropy: I. Theoretical development (1992)
    Springer
    Water resources management 6 (1992), S. 279-293 
    Details
    ISSN: 1573-1650
    Keywords: Entropy ; isoinformation ; principle of maximum entropy ; rainfall networks ; transinformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract This paper, the first in a series of two, develops an entropy-based approach for evaluating rainfall networks. Space and time dependencies between raingages are examined by autocovariance and cross-covariance matrices. Multivariate distributions, associated with different dependencies, are obtained using the principle of maximum entropy (POME). Formulas for entropy (uncertainty in data of one raingage), joint entropy (uncertainty in data of two or more raingages) and transinformation (common information content among two or more raingages) are derived for each distribution, based on normal data. The decision whether to keep or eliminate a raingage depends entirely on reduction or gain of information at that raingage. The lines of equal information (isoinformation contours) are defined by considering two raingages (bivariate case) and many raingages (multivariate case).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872281
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  • 8
    Electronic Resource
    Electronic Resource
    Parameter estimations for 2-parameter Pareto distribution by pome (1995)
    Springer
    Water resources management 9 (1995), S. 81-93 
    Details
    ISSN: 1573-1650
    Keywords: Entropy ; moments ; maximum likelihood ; Pareto distribution ; POME
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract The principle of maximum entropy (POME) was employed to derive a new method of parameter estimation for the 2-parameter Pareto distribution. Monte Carlo simulated data were used to evaluate this method and compare it with the methods of moments (MOM), probability weighted moments (PWM), and maximum likelihood estimation (MLE). The parameter estimates yielded by POME were either superior or comparable for small sample sizes when bias and RMSE were used as the criteria, and were either comparable or adequate for large sample sizes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872461
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