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  • Blackwell Publishing Ltd  (27)
  • American Association for the Advancement of Science  (11)
  • Periodicals Archive Online (PAO)  (11)
  • 2005-2009
  • 1990-1994  (49)
  • 1945-1949
  • 1994  (49)
Collection
Publisher
Years
  • 2005-2009
  • 1990-1994  (49)
  • 1945-1949
Year
  • 1
    Electronic Resource
    Electronic Resource
    Filtration Experiments of Henry Darcy (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 32 (1994), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1994.tb00926.x
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  • 2
    Electronic Resource
    Electronic Resource
    User Perceptions of Decision Support Effectiveness: Two Production Planning Experiments (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Decision sciences 25 (1994), S. 0 
    Details
    ISSN: 1540-5915
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Decision support systems continue to be very popular in business, despite mixed research evidence as to their effectiveness. We hypothesize that what-if analysis, a prominent feature of most decision support systems, creates an “illusion of control” causing users to overestimate its effectiveness. Two experiments involving a production planning task are reported which examine decision makers' perceptions of the effectiveness of what-if analysis relative to the alternatives of unaided decision making, and quantitative decision rules. Experiment 1 found that almost all subjects believed what-if analysis was superior to unaided decision making, although using what-if analysis had no significant effect on performance. Experiment 2 found that decision makers were indifferent between what-if analysis and a quantitative decision rule which, if used, would have led to significant cost savings. Thus, what-if analysis did create an illusion of control: decision makers perceived performance differences where none existed, and did not detect large differences when they were present. In both experiments, decision makers exhibited difficulty realizing that their positive beliefs about what-if analysis were exaggerated. Such misjudgments could lead people to continue using what-if analysis even when it is not beneficial and to avoid potentially superior decision support technologies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-5915.1994.tb00516.x
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  • 3
    Electronic Resource
    Electronic Resource
    Glasshouse and field evaluation of cowpea lines for partial resistance to Phytophthora vignae (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 43 (1994), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The reaction of cowpea lines to naturally occurring Phytophthora vignae in the field was studied in three trials over the period 1987–89 with the aim of identifying and characterizing lines with partial resistance. Seven lines (CPI 84853, CPI 84851, CPI 65393, CPI 77359, CPI 78209. CPI 78213 and cultivar Blackeye 5) were found to be partially resistant. Partial resistance was assessed by calculating disease incidence, disease severity, time lag before onset of disease, relative area under the disease progress curve and apparent mortality and infection rates. Significant differences in some of the characters further divided the partially resistant lines into different groups. It was concluded that the characters found to be most useful in the differentiation of relative levels of partial resistance were final percentage infection, and final percentage of plants with non-killing lesions. There were also significant correlations between these variables within and between years, although the relative rankings of some of the lines changed between years. Overall, CPI 84853 and CPI 65393 showed higher levels of partial resistance in the field than the remaining lines. In general, the partially resistant lines gave variable reactions following hypocotyl inoculation with P. vignae. There were clear indications of host-isolate interactions, suggesting that partial resistance may be no more durable than complete resistance for this particular host-pathogen interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1994.tb00548.x
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  • 4
    Electronic Resource
    Electronic Resource
    Serological variability in Xanthomonas albilineans, causal agent of leaf scald disease of sugarcane (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 43 (1994), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The serological characteristics of 215 strains of Xanthomonas albilineans from 28 locations throughout the world were investigated. Three serovars were identified by using three sera prepared against strains from different locations. The same variation among strains was observed with different serological assays: immunofluorescence. dot-blot enzyme immunoassay and agglutination. Serovar I is the largest group and consists of strains from various geographic locations such as Australia. USA (Florida), Guadeloupe. India. Mauritius. Réunion and including South Africa. Serovar II contains only strains from Africa: Burkina Faso. Cameroon. Kenya. Ivory Coast. Serovar III is the smallest group and contains strains from Caribbean islands (Guadeloupe. Saint Kitts. Martinique). Oceania (Fiji) and Asia (Sri Lanka). This serological variability should be considered when serological techniques are applied for the diagnosis of leaf-scald disease of sugarcane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1994.tb02694.x
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  • 5
    Electronic Resource
    Electronic Resource
    Sensitivity of Fusarium oxysporum f. sp. cubense to phosphonate (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 43 (1994), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Phosphonate (0.1 mM) significantly reduced growth of Fusarium oxysporum f. sp. cubense (Foc) race 4 grown at an optimal phosphate concentration of 0.3 mM in vitro. At higher phosphate concentrations, closer to physiological conditions within the plant, the sensitivity of Foc race 4 to phosphonate was greatly reduced, with 25 mM phosphonate required to reduce growth by 50% at 1 mM phosphate. Two isolates of Fusarium oxysporum f. sp. dianthi and another race of Foc, race 1, were shown to be similar to Foc race 4 in their sensitivity to phosphonate, while another species of Fusarium, F. avenaceum, was more sensitive to phosphonate in vitro.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1994.tb00571.x
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  • 6
    Electronic Resource
    Electronic Resource
    Ground Water Monitoring Statistics Update: Part I: Progress Since 1988 (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water monitoring & remediation 14 (1994), S. 0 
    Details
    ISSN: 1745-6592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Current federal ground water monitoring statistical regulation dates from the revised RCRA Subtitle C Final Rule of 1988. That rule was a considerable advance over previous RCRA statistical rules. However, two major problem areas remained: facility-wide false positive rate (FWFPR) control and spatial variability. Progress has been made in the 1991 Subtitle D Final Rule and in guidance: the 1992 Addendum to Interim Final Guidance in particular includes a substantial conceptual advance toward resolving the FWFPR problem. Other areas of improvement include normality testing and distribution assumptions, dropping the four independent samples per monitoring period requirement, allowing a preliminary evaluation short of a 40 CFR Part 258 Appendix II assessment upon finding a statistically significant increase, and suggesting superior alternatives to analyses of variance (ANOVAs) and tests of proportions.The problem of dealing with natural spatial variability remains. Although certain techniques listed in the regulations can control for inherent spatial variability and the performance standards require doing so “when necessary,” little attention has been paid to the ubiquity of such spatial variation. Moreover, regulatory traditions favoring upgradient-downgradient comparisons often make control of natural spatial variation difficult and ineffective. With new. lined facilities easily implemented statistical solutions are available; however, dealing with the several existing solid waste facilities which will now be regulated under Subtitle D will present major challenges.In short, the 1988 revision of the Subtitle C rules made it more possible to provide statistically sound monitoring programs, and there has been steady progress since then. Challenges remain, however. These vary from slate to slate, particularly with regard to controlling false positives and false negatives in the presence of natural spatial variability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6592.1994.tb00493.x
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  • 7
    Electronic Resource
    Electronic Resource
    REVISITING STATE WATER RIGHTS LAW (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 30 (1994), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : Water resources professionals should be engaged actively in revisiting state water rights law. During the past four years, sponsored by the American Society of Civil Engineers with cooperation of other water resources organizations, over a hundred engineers, hydrologists, geographers, lawyers, administrators, educators, water users, and other persons interested in water law have been preparing a Model State Water Rights Code. Preliminary drafts of the Model Code have been considered in four states, and its provisions will be disseminated nationally to state legislators and other policy makers upon formal publication in September 1994. The Model Code gathers the best provisions from state water laws into comprehensive regulated riparian and prior appropriation provisions, includes commentaries explaining how its textual sections address water resources planning and management issues, and references similar language in current state water statutes. The goal of the Code Project is to provide materials which will assist legislators so they can enact effective, efficient, and equitable water laws. In the future, the Code drafting group will expand its efforts to develop legal guidelines for allocating shared transboundary water resources, water quality law, federal water statutes, and other water resources legal issues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1994.tb03281.x
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  • 8
    Electronic Resource
    Electronic Resource
    Leukotriene Generation and Pulmonary Dysfunction following Aortic Cross Clamp in Humans (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 723 (1994), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1994.tb36780.x
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  • 9
    Electronic Resource
    Electronic Resource
    Second Messenger Activators Regulate CCK mRNA in the Human Neuroepithelioma Cell Line SK-N-MCIXC (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 713 (1994), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1994.tb44122.x
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  • 10
    Electronic Resource
    Electronic Resource
    On Being Stuck in the Middle or Good Food Costs Less at Sainsbury's (1994)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of management 5 (1994), S. 0 
    Details
    ISSN: 1467-8551
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The idea that successful companies should pursue only one strategy and avoid being ‘stuck in the middle’ between several strategies – originally articulated by Michael Porter – has become an important tenet of corporate strategic thinking. This paper attempts to distinguish and appraise several different interpretations of the advice.It is sometimes interpreted as advice about market positioning in a narrow sense; it is sometimes presented as prescribing broad strategic clarity; and it is sometimes viewed more descriptively as a scheme for classifying firms by strategic outcomes.When interpreted narrowly as referring to the appeal of a product to its target buyers, the proposition that firms should not be ‘stuck in the middle’ should not be taken to imply that companies must be down-market or up-market, but nothing in-between. Such a view is belied by the evident success of companies such as Sainsbury's, which earn substantial economic rents in a mid-market position.Porter can be interpreted more broadly as suggesting that firms need strategic clarity and that they will do better to pursue one or other of cost or quality objectives than to seek a mix of the two. PIMS data and other evidence shows, however, that intermediate positions are indeed profitable and are successfully exploited by many firms.We conclude that ‘don't be stuck in the middle’ is best employed as a classification scheme of strategic outcomes – it says that firms which fail in both cost and quality dimensions perform poorly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8551.1994.tb00066.x
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