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  • Articles  (7,909)
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  • Wiley-Blackwell  (5,817)
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  • 1970-1974  (7,908)
  • 2020  (1)
  • 1970  (7,908)
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  • Articles  (7,909)
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  • 1
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    Travel Time and Source Variation Explain the Molecular Transformation of Dissolved Organic Matter in an Alpine Stream Network (2020)
    Wiley-Blackwell
    In:  EPIC3JGR Biogeosciences, Wiley-Blackwell, ISSN: 2169-8961
    Details
    Publication Date: 2020-09-21
    Description: Streams and rivers are important components of the carbon cycle as they transport and transform dissolved organic matter (DOM). Using high‐resolution Fourier‐transform ion cyclotron resonance mass spectrometry, we studied the spatial distribution of DOM at the molecular level at more than 100 sites across a stream network during summer and winter baseflow. We developed a model approximating the time DOM spent in the fluvial network, a key constraint on the biogeochemical processing of DOM. Discharge‐weighted travel time explained the compositional changes of DOM, which differed markedly in summer and winter. We attribute these seasonal differences to variation in source material, putatively reflecting the dynamics of freshly produced DOM in summer and DOM with an imprint of leaf litter in winter. Hydrological mixing was an important driver of the spatial dynamics of DOM. From the convergence rate of DOM compound intensities to the network‐wide average, we inferred the spatial distribution of sources within the catchment. Finally, we estimated network‐wide apparent mass transfer coefficients (vf app) of individual DOM compounds, which describe the vertical velocity at which DOM compounds are removed by biotic and abiotic processes. We identified the oxidative state of carbon as an important factor explaining vf app, which we consequently attribute to biological uptake of thermodynamically favorable DOM compounds. This work contributes to our understanding of the spatial processes, temporal constraints, and chemical properties of DOM that regulate the transformation and diagenesis of DOM at the fluvial network scale.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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    PAPER (OA)
  • 2
    Electronic Resource
    Electronic Resource
    EDITORIAL (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00963.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    AN EXPERIMENT IN ADJUSTMENTS, USING SUPER-WIDE ANGLE PHOTOGRAPHY TAKEN FOR TOPOGRAPHIC MAPPING (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The paper describes an experiment using three different methods for the production of control for topographic mapping from super-wide angle photography. The result showed that aerial triangulation by independent models observed on a Wild A9 would show economic advantages in cartographic effort required, control requirements, and accuracy attained in contouring. The experiment also indicated that great benefit in heighting accuracy is derived from the addition of tie strips flown at right angles to the main photographic cover at a suitable interval and that heights supplied by airborne profile recorder are not sufficiently accurate to be economically advantageous where close interval contours are a requirement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00967.x
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  • 4
    Electronic Resource
    Electronic Resource
    SOME OBSERVATIONS AND RECOMMENDATIONS FOR THE FUTURE OF AERIAL COLOUR PHOTOGRAPHY (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The colour photograph requirements of the photogrammetrist and the photo-interpreter are not always compatible. The author puts forward suggestions for improving the quality and reducing the cost of photography for interpretation purposes, based on the use of 70 mm film cameras. He found supporting evidence for this point of view during his visit to the United States as the result of the award of a Winston Churchill Fellowship in 1969.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00970.x
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  • 5
    Electronic Resource
    Electronic Resource
    ANNUAL GENERAL MEETING, 1969 (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00971.x
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  • 6
    Electronic Resource
    Electronic Resource
    OBITUARIES (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00975.x
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  • 7
    Electronic Resource
    Electronic Resource
    BOOK REVIEWS (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Book reviews in this article:INTRODUCTION TO THE ALGEBRA OF MATRICES WITH SOME APPLICATIONS. By E. H. Thompson.BIBLIOGRAPHIE DES SCHRIFTTUMS AUF DEM GEBIET DER FORSTLICHEN LUFTBILDAUSWERTUNG 1887–1968. By G. Hildebrandt.INFRARED SYSTEM ENGINEERING. By R. D. Hudson.ELEMENTARY SURVEYING. By R. C. Brinker.REFERENCE GUIDE OUTLINE: SPECIFICATIONS FOR AERIAL SURVEYS AND MAPPING BY PHOTOGRAMMETRIC METHODS FOR HIGHWAYS.INTERNATIONAL YEARBOOK OF CARTOGRAPHY (VOL. VIII, 1968). Editor K. Frenzel.MODERN MAPS AND ATLASES. By C. B. M. LOCK.USE OF STRIPS CONNECTED TO BLOCKS FOR LARGE SCALE MAPPING. Results of Experimental Research Organized by Commission B of the O.E.E.P.E. from 1959 to 1966. By M. Cunietti.PRINCIPLES OF HOLOGRAPHY. By H. M. Smith.LA PHOTOGRAMMÉTRIE DES PLANS TOPOGRAPHIQUES ET PARCEL-LAIRES. By B. DUBUISSON.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00973.x
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  • 8
    Electronic Resource
    Electronic Resource
    INCOME DISTRIBUTION THEORY (1970)
    Oxford, UK : Blackwell Publishing Ltd
    Review of income and wealth 16 (1970), S. 0 
    Details
    ISSN: 1475-4991
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper introduces two special issues of the Review devoted to income distribution theory and its empirical implementation. Most of the papers that will appear in these two issues were prepared for a special session on income distribution held during the Eleventh General Conference of the International Association for Research in Income and Wealth, held at Nathanya, Israel, in August 1969. The present issue contains theoretical papers; the following one will present more empirical work. This introductory paper is intended to indicate the relationships among the papers that follow, and to suggest possible future directions for work in this area. In the latter connection, the author discusses the use of microanalytic models applied to microdata sets dealing with individuals and households.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-4991.1970.tb00698.x
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  • 9
    Electronic Resource
    Electronic Resource
    A POSITIVE AND A NORMATIVE THEORY OF INCOME DISTRIBUTION (1970)
    Oxford, UK : Blackwell Publishing Ltd
    Review of income and wealth 16 (1970), S. 0 
    Details
    ISSN: 1475-4991
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: A positive theory of income distribution based on assumptions concerning the supply of and demand for each type of productive service is presented. The demand function of the organizers of production may be derived from the maximization of profits with the income scale and the production function as restrictions. A normative theory based on the maximization of a social utility or welfare function is also considered. In the normative theory, production functions and balance equations (some representing compartmentalization of factor markets) are introduced as restrictions and again an income scale results, this time maximizing social welfare. Empirical testing is also considered. The positive theory was developed in part to take into consideration the fact that personal income distributions can reasonably well be described by log normal distributions, and that skill parameters are often normally distributed. Limited testing of the influence of wealth, intelligence, education, and sex suggest that these account for only a small part of the variance in the income distribution. This suggests the need for further research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-4991.1970.tb00699.x
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  • 10
    Electronic Resource
    Electronic Resource
    THE DISTRIBUTION OF INCOME BETWEEN SOCIO-ECONOMIC GROUPS IN THE NETHERLANDS (1970)
    Oxford, UK : Blackwell Publishing Ltd
    Review of income and wealth 16 (1970), S. 0 
    Details
    ISSN: 1475-4991
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper reports on a study designed to improve the information on income flows and income distribution in the Netherlands national accounts by building a bridge between the national accounts and income tax statistics. The methods used are described in some detail, and the significance of the results obtained is discussed. The figures show rather substantial fluctuations in the share of proprietors relative to that of wage earners. This result is not unexpected, since the share of proprietors is much more sensitive to the level of economic activity, but it does limit the usefulness of the figures for short-run economic policy determination. In the longer run, however, they do show what the development of the average incomes of the various social groups has been, and to what extent government action has contributed to that development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-4991.1970.tb00761.x
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