1,720,963 research outputs found
SP-09 Geological Map of the Minneapolis Quadrangle, Minnesota
No full text2 pls.Plate 1, Surficial Geology ; Plate 2, Bedrock Geology, scale 1:48,000 (Minneapolis 15' quadrangle)Hogberg, R.K.. (1970). SP-09 Geological Map of the Minneapolis Quadrangle, Minnesota. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/59968
RI-03 Kaolin Clay Resources of the Minnesota River Valley Brown, Redwood & Renville Counties, A Preliminary Report
No full textKaolin clays of potential economic significance occur in
the upper part of the thick regolith developed on Precambrian
crystalline rocks and in overlying shales of late Cretaceous
age in the Minnesota River valley, in Redwood,
Brown, and Renville counties.
Preliminary tests indicate that the clays in the regolith
warrant further testing for use as filler and coating clays
in the paper industry and for the manufacture of refractories.
Ball clays, previously unknown in Minnesota, and a
few thin bentonite beds in Cretaceous strata appear to be of
limited tonnage but should be investigated further.Parham, W.E.; Hogberg, R.K.. (1964). RI-03 Kaolin Clay Resources of the Minnesota River Valley Brown, Redwood & Renville Counties, A Preliminary Report. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/60187
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Field trip guide for the Minneapolis Quadrangle, Minnesota
No full textField trip guide for the Minneapolis 15 minute quadrangle,
Minneapolis metropolitan area, MinnesotaHogberg, R.K.. (1971). Field trip guide for the Minneapolis Quadrangle, Minnesota. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/122782
Educational Series 5. Environmental Geology of the Twin Cities Metropolitan Area
No full textIn recent years there has been growing concern about deterioration of the overall living environment of the Twin Cities Metropolitan Area. Many private citizens and governmental groups are suggesting ways to alleviate this blight. However, few have recognized the substantial influence of geologic factors on the local environment. The overall interlocking, interdependent environmental system is literally built on a geologic framework. This booklet seeks to describe the present status of knowledge of the physical controls and restraints of the environmental system excluding the climate. These physical elements include the type of soil available for raising food and fiber and the materials through which surface and ground waters flow and into which we dispose our wastes. Geologic factors also bear heavily on the nature of the materials in, on, and from which we construct our buildings and other engineering works. Natural physical hazards such as earthquakes, landslides, and floods are easily 0bserved geologic events. The mineral resources of the Twin Cities do not include economic deposits of gold, silver, or diamonds, nor is the landscape underlain by thick beds of coal or large pools of oil and gas. But beneath the hills, valleys, and lakes is an abundance of the rather mundane but important materials needed to support life and to build the needed facilities of the post-industrial age. Probably the most important of the Twin Cities' mineral resources is the plentiful supply of water. Also the rolling hills and gently sloping plains, the stream valleys, and the lake basins-the landscape -are important and unique natural resources, the base of our past, present, and future economic and cultural growth.Hogberg, R.K.. (1971). Educational Series 5. Environmental Geology of the Twin Cities Metropolitan Area. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/57259
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Information Circular 4. Directory of Minnesota Mineral Producers 1964
No full textThis Information Circular is published by the Minnesota Geological Survey to fulfill a part of its responsibility for providing information on the State's mineral resources. In this directory a mineral producer is defined as one who removed or mined mineral-bearing materials or substances other than water from their natural setting. Generally the producer processed the mineral raw materials into a form more suitable for marketing. The business addresses, locations of the sites of exploitation and associated plants are listed.Hogberg, R.K.. (1966). Information Circular 4. Directory of Minnesota Mineral Producers 1964. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/59455
Information Circular 5. Directory of Minnesota Industrial Mineral Producers 1967
No full textThis Information Circular is published by the Minnesota Geological Survey to fulfill a part of its responsibility for providing information on the State's mineral resources. For our directory an industrial mineral producer is defined as one who removed or mined mineral-bearing materials or substances other than water or iron ores from their natural geologic setting. Generally the producer processed the mineral raw materials into a form more suitable for marketing. The firm name, business addresses, locations of the sites of exploitation and processing plants are listed. There are several additional sources of detailed information on Minnesota's mineral producers. The U.S. Bureau of Mines Mineral Yearbooks and Advanced Annual Summaries present information on significant developments and statistical data, on the volume of production and average price of individual commodities, as well as the gross mineral income for each county and for the State as a whole. The Mines Experiment Station of the University of Minnesota publishes an annual Mining Directory which gives data, both current and historical on location, ownership, management, personnel, and production of iron mining properties. The markets and number of employees of manufacturers that use or modify natural mineral materials are listed in Minnesota Directory of Manufacturers prepared by the Minnesota Department of Business Development. Data on the commodities of sand and gravel, crushed and broken stone, and dimension stone were prepared for processing on the IBM 6600 computer. This was done to facilitate the preparation of future directories, to set up a information retrieval system and to provide a rapid means of updating and printing of data during intermediate periods. The tabulated information is a somewhat modified facsimile of the computer printout. Information for this report was obtained from many private and governmental sources. We welcome additional data, corrections, and suggestions to improve succeeding numbers of this directory.The preparation of this publication was financially aided through a Federal grant from the Department of Housing and Urban Development I under the Urban Planning Assistance Program authorized by Section 701 of the Housing Act of 1954, as amended.Hogberg, R.K.. (1969). Information Circular 5. Directory of Minnesota Industrial Mineral Producers 1967. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/59237
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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