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  • Blackwell Publishing Ltd  (13)
  • Taylor & Francis  (9)
  • Cambridge University Press  (7)
  • 1995-1999  (20)
  • 1965-1969  (9)
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 767 (1995), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Notes: : Conditions under which a given topological space does, or does not, possess a stronger maximal feebly compact topology are given. Procedures are developed which can be used, for certain feebly compact spaces, to obtain stronger maximal feebly compact spaces. Several examples are constructed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Growth and change 26 (1995), S. 0 
    ISSN: 1468-2257
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Economics
    Notes: Tax Increment Financing (TIF) is a popular yet controversial tool that allows local governments to use property tax revenue to fund the public costs of economic development. Since TIF gives one local government the power to affect the tax bases of the overlapping jurisdictions, there is uncertainty and argument on the part of government officials and taxpayers as to who really finances the program. To evaluate the alternative contentions, this paper presents a general methodology that identifies which taxpayers in which locations fund the TIF's expenditures, and sets forward the conditions under which such a local economic development policy can be beneficial to taxpayers. The paper applies the model to study the TIF program currently active in downtown Des Moines, Iowa. The evidence indicates that the taxpayers in the entire metropolitan area subsidized the downtown activities in the early years, but now pay lower property tax rates due to the city's TIF-financed urban revitalization program.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of public and cooperative economics 40 (1969), S. 0 
    ISSN: 1467-8292
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper examines the relationship between the Chief Executive of a CO-operative retail society and his Board of Directors. It takes for its starting point three critical activities of the Chief Executive, i.e. the achievement of society objectives; the maintenance of the internal stability of the society and the adaptation of the society to the external environment.Two factors which influence the performance of these activities are the Chief Executive's orientation to society performance and his relationship with his Board.The Chief Executive will tend to be inward-outward in orientation. Factors affecting this will be his previous task experience and organisational experience of which two aspects are important (a) time—the length of service a t lower and middle management level and (b) structure—the degree of delegation. These will affect the Chief Executive Officer's ability to deal with uncertainty in the environment, A third influential factor will be the attitudes and expectations of his Board which will be structured by their perception of democratic control. Finally the nature of the environment will affect the Chief Executive's orientation and his flexibility.In dealing with the problems which face him the Chief Executive is influenced by his reference points, i.e. by the degree of internalisation of co-operative values, and by his beliefs about the rightness of previous decisions.His decision-making is influenced by the interaction of his beliefs and those of his Board and by the depth to which they are held. These beliefs may be seen in two parts, first, relating to the nature of co-operative enterprise and secondly, to the method by which the co-operative enterprise is controlled.Contributing to the depth of internalisation of co-operative beliefs would appear to be their social and political backgrounds. Additional factors for the Chief Executive Officer include length of service in the co-operative movement, non-co-operative experience and his commitment to :managerial values'.On the basis of the differing orientations of the persons concerned, it is possible to hypothesise the development of certain decision-making situations.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of public and cooperative economics 38 (1967), S. 0 
    ISSN: 1467-8292
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of public and cooperative economics 37 (1966), S. 0 
    ISSN: 1467-8292
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 126 (1996), S. 0 
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A simplified model of domain rearrangement in multidomain particles following the application of an alternating (AF) or direct (DF) field is used to quantify the dependence of anisotropy of magnetic susceptibility on magnetic history. To be able to account for changes in the average susceptibility (i.e. The average of three mutually perpendicular susceptibility measurements) of the sample following field treatment, the model has to be refined by introducing interaction between domains. By fitting theoretical curves of anisotropy versus peak AF to experimental results for samples containing different size fractions of magnetite particles, of average grain size ranging from 0.7 to 58 μm, four relevant parameters can be computed (for each sample), which enables a good fit to be obtained. By allowing two of these parameters to change systematically when a DF is applied (and an IRM is acquired), the anisotropy dependence on direct field strength can also be modelled. This includes the sign change observed as the field-impressed ellipsoid changes from prolate to oblate, together with increases in the average susceptibility as the field increases. However, some details, such as discrepancies between predicted and actual increases in the average susceptibility at high fields, suggest that further refinement of the model is required.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 122 (1995), S. 0 
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Many interesting inverse problems in geophysics are non-linear and multimodal. Parametrization of these problems leads to an objective function, or measure of agreement between data and model predictions, that has a complex topography with many local minima. Optimization algorithms that rely on local gradients in the objective function or that search the model space locally may become trapped in these local minima. By combining simulated annealing with the downhill simplex method, a hybrid global search algorithm is presented in this paper for non-linear, multimodal, inverse problems. The hybrid algorithm shares the advantages of both local search methods that perform well if the local model is suitable, and global methods that are able to explore efficiently the full model space. The hybrid algorithm also utilizes a larger and more complex memory to store information on the objective function than simulated annealing algorithms. The effectiveness of this new scheme is evaluated in three problems: minimization of the multidimensional Rosenbrock function, non-linear, 1-D, acoustic waveform inversion, and residual statics. The performance of the hybrid algorithm is compared with simulated annealing and genetic algorithms and is shown to converge more rapidly and to have a higher success rate of locating the global minimum for the cases investigated.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 18 (1995), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The effects of soil fertility (two levels of soil nitrogen and two levels of soil phosphorus) and mycorrhizal infection on pollen production and pollen grain size were studied in two cultivars of the common zucchini (Cucurbita pepo). Overall, soil fertility and mycorrhizal infection had significant effects on traits affecting the male function of plants (staminate flower production, pollen production per flower and pollen grain size). There were also differences between the cultivars for these male traits in all three experiments. In addition, pollen grain size decreased toward the end of the growing season. In the mycorrhiza experiment, both phosphate concentration per pollen grain and total phosphate content per anther were greater but not significantly greater in the mycorrhizal plants than in the non-mycorrhizal plants. A significant negative relationship between pollen production and pollen grain size was found in the mycorrhiza and soil phosphorus experiments, indicating that there was a trade-off between pollen production and pollen size. This study is the first to show that mycorrhizal infection has an effect on male function (pollen production and size) in addition to the well-documented effects on female function (fruit/seed production and size).
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 44 (1997), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The Devonian of East Greenland comprises a thick sequence of continental clastic sediments infilling an extensional basin. West of the main basin bounding fault (Western Fault Zone) are scattered outliers of Devonian conglomerate which accumulated in small basins such as found on the island, Ella Ø. The Ella Ø Basin formed by extensional movement along the Narhval Sund Fault accompanied by the formation of a prominent bedding parallel detachment surface which was subsequently modified by sub-aerial exposure to become the unconformity surface. Mapping of this unconformity surface shows major vertical relief. A thick sequence of conglomerate occurs on Ella Ø, which, close to its exposed basal unconformity, has three lacustrine beds intercalated within it. Detailed analysis of one lake unit shows it to have significant lateral variation. At proximal localities it largely comprises lacustrine turbidites, whereas more distal locations were within a stratified lake. The interpreted sequence of events on Ella Ø is an interval of fluvial sedimentation followed by rapid drowning of the topography with lacustrine sediments onlapping onto basement. After an interval of deeper lacustrine sedimentation including laminites, the lake shallowed, the lithology changed to limestone and the lake dried out. Conglomerate deposition then recommenced. Maximum lake water depth of 100 m is estimated following correction (7°) for post-Devonian rotation, both determined using the distribution of lacustrine sediments on the unconformity surface. The preferred mechanism for flooding of the Ella Ø Basin is episodic flooding of the entire basin system. Lacustrine sediment preservation results purely from its deposition amongst topography at the edge of the active fluvial system. In such fluvial systems lacustrine sediments may be part of the normal sedimentary cycle but were almost always removed by reworking.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 33 (1995), S. 0 
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A finite-element method which incorporates mesh adaptation is used to calculate ground-water flow and pollutant transport. The formulation is based on the equations for conservation of mass, Darcy's law for an anisotropic medium, and the time-dependent species transport equation. Modifications have been implemented to the finite-element formulation to enhance computational speed and reduce storage; Petrov-Galerkin weighting of the advection terms provides numerical stability. An explicit time marching scheme is used to solve the transient equations. By utilizing unstructured adaptive meshing, species concentration and location of steep fronts are accurately resolved, even though one begins with a coarse mesh. The algorithm currently runs on PC and workstation class computers.
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