Search (2 results, page 1 of 1)

  • × author_ss:"Ruiz-Baños, R."
  1. Ruiz-Baños, R.; Bailón-Moreno, R.: Metodos para medir experimentalmente el envejecimiento de la literatura cientific (1997) 0.00 
    0.0021198175 = product of:
  0.021198174 = sum of:
    0.017077852 = weight(_text_:des in 836) [ClassicSimilarity], result of:
      0.017077852 = score(doc=836,freq=2.0), product of:
        0.079736836 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.02879306 = queryNorm
        0.2141777 = fieldWeight in 836, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0546875 = fieldNorm(doc=836)
    0.0041203224 = weight(_text_:in in 836) [ClassicSimilarity], result of:
      0.0041203224 = score(doc=836,freq=2.0), product of:
        0.039165888 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.02879306 = queryNorm
        0.10520181 = fieldWeight in 836, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0546875 = fieldNorm(doc=836)
  0.1 = coord(2/20)
    Abstract
    Presentation of Brooke's law for measuring the ageing of scientific literature was first introduced in 1970. Analyses 5 methods of statistical analysis based on this mathematical model: maximum citation, half-life, Griffiths' method, Brookes' graphical analysis and linear regression. Compares results from practical examples using each method, showing Griffiths to be imprecise and unstable, while the others produce similar results. Potential sources of error (size of sample and of age interval) can be readily controlled. An annotated bibliography is appended
    Footnote
    Übers. des Titels: Methods for measuring experimentally the ageing of scientific literature
  2. Contreras, E.J.; Moneda, M. De La; Osma, E. Ruiz de; Bailón-Moreno, R.; Ruiz-Baños, R.: ¬A bibliometric model for journal discarding policy at academic libraries (2006) 0.00 
    1.7658525E-4 = product of:
  0.003531705 = sum of:
    0.003531705 = weight(_text_:in in 4920) [ClassicSimilarity], result of:
      0.003531705 = score(doc=4920,freq=2.0), product of:
        0.039165888 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.02879306 = queryNorm
        0.09017298 = fieldWeight in 4920, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=4920)
  0.05 = coord(1/20)
    Abstract
    The authors propose a bibliometric model for discarding journal volumes at academic libraries, i.e., removal to offsite storage as part of the library's serials collection. The method is based an the volume as the unit of measurement and an user satisfaction with given titles. The discarding age, calculated for each volume, from the year of publication to the year of decision to discard, is dependent an citation half-life, relative productivity, knowledge area, and residual utility (potential consultations). The model makes it possible to predict the approximate size of a collection when a stationary state is reached in which the inflow of journal volumes is equal to the outflow from discarding. The model is also able to determine the rate of growth of the holdings. This information can be used to optimize future use of available space and economic and maintenance resources; thus promoting efficient management of the collection.

Authors

Years

Languages