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  • Blackwell Publishing Ltd  (3)
  • Springer  (3)
  • 2000-2004  (6)
  • 1960-1964
  • 2004  (4)
  • 2000  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Exploring biophysical potential and sustainability of wheat cultivation in Uruguay at the national level (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 16 (2000), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. A methodology is presented that explores soil survey information at the national level (1:1 M), generating sustainability indicators for wheat cultivation in Uruguay. Potential yields were calculated for simplified crop production situations under several constraints, such as limitation of water availability calculated from soil physical properties and climatic conditions, and limitation of nutrient availability calculated from soil fertility and climatic conditions. Land quality sufficiency was examined by comparing these yields with the constraint-free yield conditioned only by solar radiation, temperature and the crop's photosynthetic properties. Crop growth was simulated only for areas suitable for the defined agricultural use. Model runs were repeated with inclusion of a topsoil loss scenario over 20 years as defined from an erosion risk analysis. Comparison between crop growth simulations for the two situations, gives an indication of the changes in land quality status, which supplies an indicator for agroecological sustainability.On the basis of crop growth simulation it is concluded that wheat production constraints in Uruguay appear to be mainly related to water availability limitations, while nutrient availability is near optimal for the suitable soils. The simulated loss of topsoil impacts most on soil physical properties, expressed in reduced water-limited yields. Soil fertility status, evaluated by change in nutrient-limited yields, was little affected by the scenario.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.2000.tb00208.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Stimulating the Potential: Creative Performance and Communication in Innovation Teams (2004)
    Oxford, UK and Malden, USA : Blackwell Publishing Ltd
    Creativity and innovation management 13 (2004), S. 0 
    Details
    ISSN: 1467-8691
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Creativity is essential to successful new product development efforts. Teams constitute the organizing principle in most modern innovation activities. Although creativity research has revealed many factors influencing individual creativity, little is known about how team-level creativity is determined. Since the creative innovation task requires teams to combine and integrate input from multiple team members, the team's communication pattern is an important determinant of team creativity. Based on a sample of 44 NPD teams in eleven companies, this study examines the effects of team-member communication on team creativity. It is found that both interaction frequency and subgroup-formation of communication have a negative relationship to team creativity. Theoretical and practical implications are discussed, and further research is indicated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8691.2004.00294.x
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  • 3
    Electronic Resource
    Electronic Resource
    Quantitative analysis of bacterial communities from Mediterranean sapropels based on cultivation-dependent methods (2004)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 51 (2004), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Microbial communities of ancient Mediterranean sapropels, buried sediment layers of high organic matter, were analyzed by most probable number (MPN) approaches. Mineral media containing different carbon sources in sub-millimolar concentrations were used. MPN numbers were elevated in sapropels and at the sediment surface, which mirrored total cell count distributions. Highest MPN counts were obtained with a mixture of different monomeric and polymeric substrates, with amino acids or with long-chain fatty acids as sole carbon sources. These values reached up to 2 × 107 cm−3, representing 3.3% of the total cell count. A total of 98 pure cultures were isolated from the highest positive dilutions of the MPN series, representing the most abundant microorganisms culturable by the methods used. The strains were identified by molecular biological methods and could be grouped into 19 different phylotypes. They belonged to the α-, β-, γ-, and δ-Proteobacteria, to the Actinobacteria and the Firmicutes. However, about half of the number of isolates was closely related to the genera Photobacterium and Agrobacterium. Regarding the high cultivation success, these organisms can be assumed to be typical sapropel bacteria, representing a substantial part of the culturable indigenous microbial community.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsec.2004.07.010
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  • 4
    Electronic Resource
    Electronic Resource
    Challenges of the LHC: the detector challenge (2004)
    Springer
    The European physical journal 34 (2004), S. 61-65 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjc/s2004-01768-6
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  • 5
    Electronic Resource
    Electronic Resource
    Supporting Timing Analysis by Automatic Bounding of Loop Iterations (2000)
    Springer
    Real-time systems 18 (2000), S. 129-156 
    Details
    ISSN: 1573-1383
    Keywords: hard real-time systems ; worst-case execution time ; static analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Static timing analyzers, which are used to analyze real-time systems, need to know the minimum and maximum number of iterations associated with each loop in a real-time program so accurate timing predictions can be obtained. This paper describes three complementary methods to support timing analysis by bounding the number of loop iterations. First, an algorithm is presented that determines the minimum and maximum number of iterations of loops with multiple exits. Even when the number of iterations cannot be exactly determined, it is desirable to know the lower and upper iteration bounds. Second, when the number of iterations is dependent on unknown values of variables, the user is asked to provide bounds for these variables. These bounds are used to determine the minimum and maximum number of iterations. Specifying the values of variables is less error prone than specifying the number of loop iterations directly. Finally, a method is given to tightly predict the execution time of inner loops whose number of iterations is dependent on counter variables of outer level loops. This is accomplished by formulating the total number of iterations of a loop in terms of summations and solving the resulting equation. These three methods have been successfully integrated in an existing timing analyzer that predicts the performance for optimized code on a machine that exploits caching and pipelining. The result is tighter timing analysis predictions and less work for the user.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008189014032
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  • 6
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    Challenges of the LHC: the detector challenge (2004)
    Springer
    Details
    Publication Date: 2004-05-01
    Print ISSN: 1434-6044
    Electronic ISSN: 1434-6052
    Topics: Physics
    Published by Springer
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