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  • 1
    Electronic Resource
    Electronic Resource
    Changes in access to homeownership during the 1970s (1985)
    Springer
    The annals of regional science 19 (1985), S. 37-49 
    Details
    ISSN: 1432-0592
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography , Economics
    Notes: Abstract During the mid and late 1970s housing price inflation made the purchase of a home problematic for large numbers of Americans. This paper uses Annual Housing Survey (AHS) data from five successive years, 1974 to 1978, to analyze the extent of the affordability crisis. It outlines the changes in the size and characteristics of the stream of movers from rented to owner occupied housing which would accompany an affordability crisis and examines AHS data for evidence of these changes. The results suggest that the exclusionary effects of housing price inflation were confined to the southern and western regions of the United States. The causes for these regional differentials and their implications for housing policy are briefly explored.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02078773
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Book reviews (1993)
    Springer
    Human ecology 21 (1993), S. 447-457 
    Details
    ISSN: 1572-9915
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00891144
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  • 3
    Electronic Resource
    Electronic Resource
    Social responses to commodity shortages: The 1973–1974 gasoline crisis (1980)
    Springer
    Human ecology 8 (1980), S. 193-212 
    Details
    ISSN: 1572-9915
    Keywords: social responses ; gasoline shortage ; rationing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract This paper examines social responses to the 1973–1974 gasoline crisis in the United States, using newspaper reports of automobile driver behavior in two metropolitan areas and American Automobile Association data on the adoption of rationing plans and the availability of gasoline in 48 states. From these data it is possible to identify two types of responses: individual responses by automobile drivers, which occurred in every region affected by the shortages, and collective responses in the form of rationing plans adopted by governments and gas station operators in the regions with the most severe shortages. In the latter regions the responses occurred in sequence, with individual responses emerging first and collective responses developing later.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01561024
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  • 4
    Electronic Resource
    Electronic Resource
    Roads, speculators, and colonization in the Ecuadorian Amazon (1983)
    Springer
    Human ecology 11 (1983), S. 385-403 
    Details
    ISSN: 1572-9915
    Keywords: Amazon ; colonization ; roads ; policy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Ethnic Sciences
    Notes: Abstract In view of the generally disappointing performance of colonization projects in the Amazon basin, unusual projects merit close scrutiny because they may suggest a more effective organizational form for the colonization of humid lowlands. With this end in mind, this article examines those aspects of the Upano-Palora project in southeastern Ecuador that are attributable to the project's unusual plan of establishing settlements first and building the roads afterwards. It concludes that the “settlements first, roads second” developmental sequence reduced the costs of the project, produced an egalitarian pattern of landownership, and contributed to a pattern of land use that had potentially damaging ecological effects. These findings suggest that variations in the timing of road building have an important impact on outcomes in new land settlement schemes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00892246
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  • 5
    Electronic Resource
    Electronic Resource
    Resource partitioning and regional development strategies in the Ecuadorian Amazon (1989)
    Springer
    GeoJournal 19 (1989), S. 437-446 
    Details
    ISSN: 1572-9893
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Notes: Abstract This paper argues that the process of establishing claims and control over resources, referred to as resource partitioning, structures frontier societies in ways which impede subsequent efforts at rural development. Conflicts over claims to resources create divisions among local elites which prevent the formation of coalitions to promote development. Struggles for control over the flow of resources out of a region cause regional development agencies to pursue transportation policies which retard development by isolating the region from all but one commercial center. A case study of resource partitioning and rural development efforts in the Ecuadorian Amazon illustrates the argument.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00176914
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  • 6
    Electronic Resource
    Electronic Resource
    Construction of hermes shuttle vectors: a versatile system useful for genetic complementation of transformable and non-transformableNeisseria mutants (1996)
    Springer
    Molecular genetics and genomics 250 (1996), S. 558-569 
    Details
    ISSN: 1617-4623
    Keywords: Plasmid vector ; Conjugation ; Generalized mutagenesis ; Homologous recombination ; Natural transformation competence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A versatile shuttle system has been developed for genetic complementation with cloned genes of transformable and non-transformableNeisseria mutants. By random insertion of a selectable marker into the conjugativeNeisseria plasmidptetM25.2, a site within this plasmid was identified that is compatible with plasmid replication and with conjugative transfer of plasmid. Regions flanking the permissive insertion site of ptetM25.2 were cloned inEscherichia coli and served as a basis for the construction of the Hermes vectors. Hermes vectors are composed of anE. coli replicon that does not support autonomous replication inNeisseria, e.g. ColE1, p15A, orori fd, fused with a shuttle consisting of a selectable marker and a multiple cloning site flanked by the integration region of ptetM25.2. Complementation of a non-transformableNeisseria strain involves a three-step process: (i) insertion of the desired gene into a Hermes vector; (ii) transformation of Hermes into aNeisseria strain containing ptetM25.2 to create a hybrid ptetM25.2 via gene replacement by the Hermes shuttle cassette; and (iii) conjugative transfer of the hybrid ptetM25.2 into the finalNeisseria recipient. Several applications for the genetic manipulation of pathogenicNeisseriae are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02174444
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Construction of Hermes shuttle vectors: a versatile system useful for genetic complementation of transformable and non-transformable Neisseria mutants (1996)
    Springer
    Molecular genetics and genomics 250 (1996), S. 558-569 
    Details
    ISSN: 1617-4623
    Keywords: Key words Plasmid vector ; Conjugation ; Generalized mutagenesis ; Homologous recombination ; Natural transformation competence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A versatile shuttle system has been developed for genetic complementation with cloned genes of transformable and non-transformable Neisseria mutants. By random insertion of a selectable marker into the conjugative Neisseria plasmid ptetM25.2, a site within this plasmid was identified that is compatible with plasmid replication and with conjugative transfer of plasmid. Regions flanking the permissive insertion site of ptetM25.2 were cloned in Escherichia coli and served as a basis for the construction of the Hermes vectors. Hermes vectors are composed of an E. coli replicon that does not support autonomous replication in Neisseria, e.g. ColE1, p15A, or ori fd, fused with a shuttle consisting of a selectable marker and a multiple cloning site flanked by the integration region of ptetM25.2. Complementation of a non-transformable Neisseria strain involves a three-step process: (i) insertion of the desired gene into a Hermes vector; (ii) transformation of Hermes into a Neisseria strain containing ptetM25.2 to create a hybrid ptetM25.2 via gene replacement by the Hermes shuttle cassette; and (iii) conjugative transfer of the hybrid ptetM25.2 into the final Neisseria recipient. Several applications for the genetic manipulation of pathogenic Neisseriae are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02174444
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    Paper (German National Licenses)
    Fulltext
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