Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Agriculture and human values 16 (1999), S. 241-255 
    ISSN: 1572-8366
    Keywords: Collective action ; Common-pool resources ; Multiple-use ; Platforms for resource use negotiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Collective action processes in complex, multiple-use common-pool resources (CPRs) have only recently become a focus of study. When CPRs evolve into more complex systems, resource use by separate user groups becomes increasingly interdependent. This implies, amongst others, that the institutional framework governing resource use has to be re-negotiated to avoid adverse impacts associated with the increased access of any new stakeholders, such as overexploitation, alienation of traditional users, and inter-user conflicts. The establishment of “platforms for resource use negotiation” is a way of dealing with complex natural resource management problems. Platforms arise when stakeholders perceive the same resource management problem, realize their interdependence in solving it, and come together to agree on action strategies for solving the problem (Röling, 1994). This article sets the scene for a discussion in this Special Issue about the potential of nested platforms for resource use negotiation in facilitating collective action in the management of complex, multiple-use CPRs. The article has five objectives. First, we define “collective action” in the context of this paper. Second, we discuss the importance of collective action in multiple-use CPRs. Third, we introduce the concept of platforms to coordinate collective action by multiple users. Fourth, we address some issues that emerge from evidence in the field regarding the role and potential of nested platforms for managing complex CPRs. Finally, we raise five discussion statements. These will form the basis for the collection of articles in this special issue.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Agriculture and human values 16 (1999), S. 309-315 
    ISSN: 1572-8366
    Keywords: Collective action ; Common-pool resources ; Multiple-use ; Platforms for resource use negotiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In this special issue, Steins and Edwards introduced the notion of nested platforms for resource use negotiation as a tool to facilitate collective action amongst multiple-users in complex common-pool resource management scenarios. Five discussion statements were put forward to aid the debate on multi-use platforms. This paper is a synthesis of the responses to these statements by the other contributors to this special issue. It aims to further stimulate the debate on the management of complex, multiple-use common-pool management scenarios.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The induction of tumor necrosis factor α (TNF-α) by polytetrafluoroethylene (PTFE) particles (5-50 μm) and by bacterial lipopolysaccharide (LPS) and lipoteichoic acid (LTA) was examined in RAW cell cultures. Twenty-four-hour culture supernatants from the treated and control cells were assayed for TNF-α using a mouse L929 cell cytotoxicity assay. Untreated RAW cells produced low levels of endogenous TNF-α in the culture supernatants. Addition of 0.5 ng to 1 μg/ml LPS or 1 ng to 1 μg/ml LTA increased the TNF-α production by 7-3570-fold and 2-815-fold, respectively. Addition of 1-5 mg PTFE increased the TNF-α production by 6-17-fold over the untreated control cell levels. The cells exposed to PTFE and 0.5 ng/ml LPS or 5 ng/ml LTA produced TNF-α levels that were significantly higher than those produced by any inducer alone. Thus, both LTA, a Gram-positive bacterial cell wall component and LPS, a Gram-negative bacterial cell wall component, can induce TNF-α production, which is further enhanced by PTFE particles in RAW cells. © 1996 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: High-purity copper samples were irradiated with high-energy protons and neutrons. The concentration of transmutational elements was measured by means of the total reflection x-ray fluorescence method using synchrotron radiation. The spectra of non-irradiated samples were substracted from the spectra of the irradiated samples. By this evaluation method, the minimum detectable concentration was as low as 1.5 μg g-1 in a copper matrix.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: It was demonstrated that a total reflection x-ray fluorescence spectrometer, using monoenergetic synchrotron radiation as the primary x-ray source, is suitable to measure the concentration of transmutational elements in Cu and Fe metal matrices. In a typical irradiation of copper with 590 MeV protons or with spallation neutrons, where the damage dose is 0.4 dpa (displacement per atom), the calculated concentration of transmutational elements is Ni 25, Co 8 and Fe 8 μg g-1. The results show that the minimum detectable concentrations were lower than these values. The energy of the sychrotron radiation was set just below the K-edge energy of the matrix element, eliminating the large peak due to the matrix. As an example, in the case of a Cu (Z = 29) matrix, the minimum detectable concentration for Ni (Z = 28) was as low as 3 μg g-1. In order to check systematically the possible geometric arrangements of beam direction-reflector position-detector position, a new vacuum chamber was designed and tested. It provides all technical components for remote control of the adjustment procedure to align the reflector in total reflection geometry. Two ways of positioning the reflector in the beam, vertical to the plane of polarization and parallel to that plane, were investigated, to find the best excitation conditions and lowest limits of detection. A few pg corresponding to a concentration of ng g-1 of samples where the matrix can be easily removed as in aqueous or acidic solutions and 50 ng g-1 concentration of metals in a light matrix as in oil were found as detection limits.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...