1,720,956 research outputs found
Modelling of Transformation Vegetation Index Using Landsat 7 ETM+ (Enhanched Thematic Mapper) Imagery for the Spatial Analysis of Production Estimation of Rice (Case Study in Sragen Regency, Central Java Province)
Get PDFAs an agricultural country, the agricultural sector in Indonesia is one of the important sectors of the construction sector in the main development. One of the agricultural commodities most important food in Indonesia is a rice, which is the staple food for more than 95 percent of the population.Based on the importance of rice as a staple food most of the people of Indonesia, the volume of rice production every year should be controlled, through the estimation of production. Various methods have been developed to estimation production of rice, one of which by using a remote sensing method. Through the analysis of satellite imagery can be reduced the levels of plant greenness (vegetation index) which can be used to estimate the age of the rice crop and productivity. Using the satellite imagery, acquisition of rice production data can be performed quickly and accurately, making it more efficient in terms of time, cost, and effort. The aims of the study are : (1). To create a model of the transformation vegetation index is most suitable used as the basis in production estimation of rice, (2). To asses the ability of Landsat 7 ETM+ imagery in the extraction data of rice fields area which is used for a basis for estimation production of rice.
This research is a remote sensing research . The method of data collection used a digitally image interpretation, field observations, interviews, and review of documentation. The main data source is Landsat 7 ETM+ imagery, which is used for extraction rice fields data and production estimation of rice. From the Landsat 7 ETM + imagery derived of vegetation index information, information of land cover and land use as a basis for estimation production of rice. The transformation of vegetation index method used in this study is the transformation of NDVI and SAVI. Forms of research is descriptive qualitative analysis Productivity of rice data derived from measurements field. The data analysis used the spatial descriptions using analysis of Geographic Information Systems(GIS).
Results of this research show that : (1). Based on the results of correlation between the productivity of rice with the brightness value, the correlation coefficient (r) between variables NDVI with productivity is 0.844 and the value of r ²= 0, 712, while the value of the correlation coefficient (r) between variables SAVI with productivity is 0.841 and the value of r ² = 0.707, so between SAVI and NDVI variables with productivity variables have positive correlation and strong correlation. Thus, the transformation of NDVI and SAVI indices can be used as the basis for estimation production of rice in the research area. The transformation of vegetation index NDVI is more suitable model, because it has value of correlation result is higher when compared to the value of the correlation transformation of vegetation index SAVI. (2), Based on the interpretation of test matrices, obtained accuracy of image interpretation of Landsat 7 ETM + is 90.22%. With reference to the standard interpretation of precision, accuracy test results are included in both categories, and meet the standards of accuracy of interpretation Thus, the Landsat 7 ETM+ imagery have a high accuracy for the extraction of rice fields of data required for estimation production of rice so an alternative method that can be used to estimate of rice production
Sasi and Its Relation to the Economic Development and Marine Preservation (Case Study: Raja Ampat)
Get PDFRaja Ampat, West Papua, Indonesia, is one among many marine tourism spots such as Derawan, Bunaken, Wakatobi and Tiga Gili. Raja Ampat is known for its diversity, rich coral reefs and marine resources. Raja Ampat’s characteristic is not only based on their beauty of marine natural resources but also its tradition, culture and living indigenous law. The existing indigenous law in Raja Ampat is called “SASI”. This tradition and living law has an important relation in sustaining tourism activities and the variety of marine activities that can be carried out in the ocean, particularly in marine protected areas on Raja Ampat. This writing is meant to analyze Sasi; to examine Sasi and its relation to economic development; and to analyze the impact of Sasi’s implementation on marine preservation for marine sustainability. It appears that Sasi’s implementation as the indigenous living law on Raja Ampat offers positive advantages including restoration and livelihood of the marine environment (incorporating with their marine natural resources). Therefore, the existence of Sasi on Raja Ampat is able to maintain the economic progress and marine environment sustainability
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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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