1,720,989 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Research Brief: Loss of forest in large unfragmented blocks of forest in Rhode Island
Get PDFThis research brief was prepared by the University of Rhode Island (URI) in response to a request from the RI Woodland Partnership to provide data on recent loss of forest in RI. Specifically we were asked to estimate the extent of recent loss of forest in large unfragmented blocks of forest with an area of at least 250ac. These large unfragmented blocks are important for many wildlife species, and were mapped by the Rhode Island Department of Environmental Management (RIDEM) during the preparation of the 2015 Rhode Island Wildlife Action Plan. We were also asked to (a) estimate how much of the recent loss of forest in these unfragmented blocks was in areas that were not classified as wetlands, conservation land, or within the Urban Services Boundary; and (b) to describe the 2018 land uses to which these forested areas had been converted. The report was updated in January 2020 to include an estimate the loss of forest in these blocks by town
Variations on the Author
Get PDF“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
Silviculture Training for Staff to Support Community Forestry Programs in Developing Countries
Get PDFProviding silviculture training to forest service staff in developing countries can have a major impact on the implementation of community forestry programs. This report describes a seven day silviculture training conducted in Bhutan in 2005. The main objective of the training was to enhance the technical and social skills of forestry staff so that they could assist villagers to manage community forests in a more productive, sustainable, and equitable manner. I helped plan and conduct the training, and wrote a detailed training report with two other colleagues. Later in 2011 while supporting community forestry in other countries, I prepared this much shorter description of the training that provides much less information about Bhutan, but focuses on information that could be useful for organizing silviculture trainings in other countries
Ecotourism Attractions of Ruteng Nature Recreation Park, Indonesia
Get PDFThis document describes the major ecotourism attractions of the Ruteng Nature Recreation Park in Flores, which was established in August 1993. Development of the Park began in 1995 with assistance from the Indonesia Biodiversity Conservation Project (IBCP) funded by the Asian Development Bank. I served as the Team Leader of the IBCP in Flores (1995-1996). My major tasks were supervising the completion of a 25 year management plan for the Park, and providing technical assistance during the first year of implementation of the new management plan. Another task was preparing this short booklet for visitors that describes the major ecotourism attractions in the Park and the surrounding buffer zone. The attractions include hiking trails to a volcano, lakes, and waterfalls in areas with diverse wildlife and vegetation
GIS rasters to identify sites for creating habitat for American Woodcock in Rhode Island
No full textThe University of Rhode Island has conducted several studies of habitat use of Scolopax minor (American Woodcock) in Rhode Island, USA. In 2020 we developed a new species distribution model (SDM) tool to identify sites in the Rhode Island where forest clearcutting to create young forest habitat would have the most positive effect for American woodcock. A typical SDM predicts the probability of presence (POP) of a species at any location based on an analysis of known occurrences and environmental variables, but it cannot predict how much the POP of a species would change after a new patch of young forest is created in any location. We believe that our new tool is effective, and that it will help landowners identify the best locations on their properties to improve woodcock habitat. We also believe that similar tools can be developed for other wildlife species of conservation concern. We created the new tool by modifying the existing 2018 SDM raster for American Woodcock in Rhode Island. Creating the tool involved creating four new ArcGIS raster datasets. The existing 2018 SDM raster and the four new rasters are now publicly available in a geodatabase in the Dryad repository.The ArcGIS raster datasets can only be viewed by using geographic information system (GIS) software such as ArcGIS Desktop or ArcGIS Pro (Environmental Systems Research Institute, Redlands, CA). The geodatabase, a compressed version of which is uploaded to Dryad, contains a total of 619 files, but when it is opened with GIS software, the five raster datasets will be visible and easily opened.
Funding provided by: Rhode Island Department of Environmental Management and the University of Rhode Island*Crossref Funder Registry ID: Award Number: AWD 3695774We used Maxent 3.4.1 to create our new SDM tool, and ArcGIS Desktop 10.6 to store the output raster datasets in a geodatabase that can only opened with geographic information system (GIS) software. The geodatabase uploaded to Dryad (Woodcock_POP_2018_Rasters) contains five raster datasets that cover the entire state of Rhode Island. A brief description of the five rasters is provided below. We provide a detailed description of how we created our new SDM tool, and how the tool can be used, in the following journal article: Bill Buffum, Roger Masse and Scott R. McWilliams (2021) Novel Use of Species Distribution Modeling to Identify High Priority Sites for American Woodcock Habitat Management. Northeastern Naturalist 28: p. 233-247.
Woodcock_POP_2018: This raster (10m pixels) shows the 2018 probability of presence for woodcock in RI. It is based on Maxent modelling of three years woodcock location data, obtained by catching 68 woodcock in RI in the spring, attaching transmitters, and tracking their movements until August. The Maxent model was projected onto 2018 spatial data.
Woodcock Upland POP 2018: This raster (50m pixels) shows the 2018 probability of presence for woodcock in RI. It is similar to Woodcock POP 2018, but it has 50m pixels and only includes upland forest areas which are suitable for clearcuts to create young forest habitat.
Woodcock POP After Forest Mgt 2018: This raster (50m pixels) was the primary product of our new SDM tool. It shows the predicted probability of presence for woodcock in RI if young forest habitat is created at any upland forest location in RI.
Increase in Woodcock POP After Forest Mgt 2018: This raster (50m pixels) shows the predicted increase in probability of presence for woodcock in RI if young forest habitat is created at any site. It was produced by using raster calculator to subtract the POP values of Woodcock Upland POP 2018 from Woodcock POP After Forest Mgt 2018
Top Priority Sites for Forest Mgt 2018: This raster (50m pixels) shows the top priority (top 20% and top 40%) sites for creating young forest habitat for woodcock in Rhode Island. The top 20% sites include area where both the predicted POP increase after forest management and the predicted POP after forest management are in the top 20% class. The top 40% sites include areas where both the predicted POP increase after forest management and the predicted POP after forest management are in the top 40% range
A New Tool for Mapping Forest Habitats in Rhode Island
Get PDFThe Forest Habitat Map (FHM) for Rhode Island was created to provide private land owners with a simple tool to analyze and map forest habitats at the scales of 1:5000 or more using licensed or free mapping GIS software. Seven existing land use and land cover data sets provide recent spatial data on forest habitats in Rhode Island (Table 1), but none provides complete coverage of the most important forest habitat types. As a result, it is necessary to combine data from several datasets to prepare a forest habitat map. This requires access to licensed GIS software and an understanding of the strengths and weaknesses of the available data sets. Furthermore, shrubland forest habitat is not adequately covered by any of the existing datasets. The FHM simplifies the process of mapping forest habitats by including eight major forest types in one dataset. The FHM was prepared by combining data from several existing datasets with a recently prepared shrubland dataset and a manual update of several forest categories
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Managing a Forest Reserve Severely Affected by Illegal Logging and Farming. Based on Research in Haiti.
Get PDFForest reserves in developing countries can have severe problems with illegal logging and farming, and addressing these problems is complex. I worked in Haiti in 1997 as a forestry consultant for the Forest and Parks Protection Technical Assistance Project, financed by the World Bank. I offered recommendations for the management of a forest reserve (Foret des Pins) that was experiencing the problems mentioned above. I prepared a detailed report that included recommendations and a draft management plan for the reserve (Buffum 1997). Since the reserve was in a state of crisis, I recommended that the project initially focus on issues that could be handled without increasing the already severe conflict with local villagers, and move on to other issues after a few years. In 2006, I produced this modified report about the Haitian reserve, which focusses on issues that are relevant for other countries, and is much shorter than my original 1997 report
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