1,721,020 research outputs found
BACKGROUND TO THE INTRODUCTION OF HIGH YIELDING VARIETIES OF RICE IN THAILAND
Get PDFThis paper describes Thailand's experience to date with new technology in rice, namely new high yielding varieties with associated inputs, which forms one part of the "green revolution." First, the historical background in exports, production, and domestic marketing and pricing is presented. Next the significant developments in rice research in Thailand are described, followed by a brief outline of the adoption of new varieties. In the final section, some implications are drawn for future developments, based on the experience gained until now.Crop Production/Industries,
TECHNOLOGY AND THE AGRICULTURAL OUTPUT MIX
Get PDFThe purpose of this paper is to show how the allocation of research resources among commodities and the effects of such allocations on the output mix depend upon (a) the initial production conditions, (b) the nature of the research production functions, and (c) the nature of the demand relations for the commodity outputs. The basic model used is a two-factor, two-product model in which certain types of technical change are introduced.Farm Management,
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
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
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
RESOURCE USE IN SYSTEMS OF INTENSIVE ANIMAL PRODUCTION
Get PDFThe purpose of this paper is to describe several alternative mixes of resources used in animal production, explain why they came about, and question their appropriateness. My main thesis is that capital-intensive systems, although not inherently good or bad, have social and economic consequences for a country that may be either very good or very bad
The Place of Accelerated Production Campaigns in Efforts to Expand Agricultural Output
Get PDFThe accelerated production campaign has become popular in recent years as a
vehicle for increasing the aggregate output of a particular crop by substantially
raising the per hectare yields on enough farms to make an impact on output at
the national level. One could almost say that production campaigns have
become a "style of development." Masagana 99 is selected as an example of a
successful campaign, and those factors which appear to be necessary preconditions
are available technology, a credit system, incentive prices, and political
support and leadership. Activities that must be set in motion once a decision
has been made to initiate a campaign include: organizing for planning,
implementation, and control with a structure that goes from the local village to
the highest level of government; selecting target areas and concentrating effort
in them; training farmers and field technicians, and making the technicians
mobile; supplying and coordinating inputs and credit; and publicity. If the
preconditions are not in place, resources should be used to establish them rather
than on a campaign that is likely to fail. While they require to be backed up
by research and extension, accelerated production campaigns are basically
promotional activities, and can be incompatible with research and extension
organizations. Overshadowing all of these factors is weather, which can make
or break a campaign
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