Title: Urban Environment & Urban Ecology
Full Journal Title: Urban Environment & Urban Ecology
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ISSN: 1002-1264
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Language: Chinese
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: Impact Factor (2003)
? Sun, Q.Y. and Yang, L.Z. (2002), Removal of chromium ion from aqueous solution using modified peat. Urban Environment & Urban Ecology, 15 (3), 5-8.
Full Text: Urb Env Urb Eco15, 5
Abstract: In order to overcome the problems in using the stuff peat to treat wastewater, the sulfuric acid was added to the stuff peat to prepare the modified peat, and then the modified peat was mixed with polyvinylalcohol (PVA) and formaldehyde (37%) to enhance the mechanical intensity of the modified peat. In this paper, we used the batch experimental system to investigate adsorption characteristics of modified peat on chromium ion from aqueous solution. The results show that the adsorption isotherm fit the Freundlich equation, and that the kinetic process of adsorption can be described by the pseudo - second order model. The adsorption process of modified peat on chromium ion was pH dependent, the optimum range being 1.5 similar to 3.0.
Full Journal Title: Urban Geography
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? Wheeler, J.O. (1994), Achievers of influence - most-cited authors in Urban Geography, 1980-1986. Urban Geography, 15 (6), 503-504.
Full Text: 1994\Urb Geo15, 503.pdf
Keywords: Authors, Influence
? Harris, C.D. (1998), Diffusion of urban models: A case study. Urban Geography, 19 (1), 49-67.
Full Text: 1998\Urb Geo19, 49.pdf
Abstract: The analysis of diffusion through the academic landscape of models of internal patterns of cities, as published in ‘The Nature of Cities’ (Harris and Ullman, 1945) in simplified generalized, and comparative cartodiagrams of concentric zones, sectors, and multiple nuclei, is based on records of 128 citations of the basic article in periodicals and on 309 reproductions of the models in books. The half-life of periodical citations of the article was reached in 1974, 29 years after publication. The half-life of reproduction of the models in books occurred eight years later in 1982, but the peak year was 1995, with 20 new republications.
Keywords: Academic, Analysis, Case Study, Citation Classics, Citations, Cities, Diffusion, Geography, Half-Life, Landscape, Models, Periodicals, Publication, Reproduction, Urban
Title: Urban Studies
Full Journal Title: Urban Studies
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ISSN: 0042-0980
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Matthiessen, C.W. and Schwarz, A.W. (1999), Scientific centres in Europe: An analysis of research strength and patterns of specialisation based on bibliometric indicators. Urban Studies, 36 (3), 453-477.
Full Text: 1999\Urb Stu36, 453.pdf
Abstract: This paper presents the first analysis of scientific strength by output (papers in the Science Citation Index 1994-96) produced by authors from the ‘greater’ urban regions of Europe. Top lists of European centres are indicated. Four agglomerations constitute the European super-league of science: London, Paris, Moscow and the Dutch urban agglomeration of Amsterdam, the Hague, Rotterdam and Utrecht. The next layer could be named the primary league and comprises 19 large research centres. A third group of 16 cities forms a secondary league of 16 smaller research centres. These upper-level research strongholds are categorised in the paper where patterns of specialisations by absolute and relative distribution of research disciplines for each city are identified and families of cities by research pattern are analysed and compared within the perspective of urban economic growth and change.
Matthiessen, C.W., Schwarz, A.W. and Find, S. (2002), The top-level global research system, 1997-99: Centres, networks and nodality. An analysis based on bibliometric indicators. Urban Studies, 39 (5-6), 903-927.
Full Text: 2002\Urb Stu39, 903.pdf
Abstract: The importance of the knowledge-base in regional and urban competition is generally recognised, although causal relations between urban and regional economic growth and knowledge level are far from clear. This paper presents the first analysis of the strength, interrelations and nodality of the global research centres. The data are records in the Science Citation Index 1997-99 of papers produced by authors from the 40 largest ‘greater’ urban regions of the world as measured by research output. The network of research co-operation depends on nationality, distance and other factors. The top-level nodes in the co-operation network of the world are London, Genève-Lausanne and the San Francisco Bay Area. In absolute number of co-authored papers, Los Angeles, Boston and New York constitute a second level and, when observed links are related to expected links, the second level combines Amsterdam-Hague-Rotterdam-Utrecht, Paris, Basel-Mulhouse-Freiburg and Copenhagen-Lund. As expected, the networks of citation are, by contrast, very independent of distance, but not of nationality. The primary categories of research centres for the total number of citings presented are San Diego, Seattle, Boston, New York and the San Francisco Bay Area. When we turn to the international data-set, it is Mannheim-Heidelberg, Genève-Lausanne, Basel-Mulhouse-Freiburg and Cambridge which are in the lead.
? Matthiessen, C.W., Schwarz, A.W. and Find, S. (2010), World cities of scientific knowledge: Systems, networks and potential dynamics. An analysis based on bibliometric indicators. Urban Studies, 47 (9), 1879-1897.
Full Text: 2010\Urb Stu47, 1879.pdf
Abstract: This paper is based on identification of the pattern of the upper level of the world city network of knowledge as published in a series of earlier papers. It is our aim to update the findings and relate to the general world city discussion. The structure of the world cities of knowledge network has changed over the past decade in favour of south-east Asian and south European cities and in disfavour of the traditional centres of North America and north-western Europe. The analysis is based on bibliometric data on the world’s 100 largest cities measured in terms of research output. The level of co-authorship between researchers in different cities is an indicator of links and respect, and the number of citations of papers produced by researchers located in each city is an indicator of respect. Finally, one research discipline is selected for an experiment in forecasting future hot spots of research.
Keywords: Bibliometric, Centers, Citations, City Network, Collaboration, Europe, Geographical Proximity, Indicators, Knowledge Network, Localization, Patterns, Research, Research Output
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