1,720,965 research outputs found
Technical Efficiency of Growth and Income Fund in Malaysia: An Application of Stochastic Frontier Analysis (SFA)
No full textAbstract Unit trust or mutual fund industry is an intensive and very popular topic in research. A unit trust is an investment scheme that pools monies from individuals or institutions who share the same investment and financial objectives. However, investors often involve to problem when making the selection of funds to be invested. Therefore, the purpose of this current study is to measure and analyze the relative efficiency of unit trust industry in Malaysia by using Stochastic Frontier Analysis (SFA) method for the year 2007, 2008 and 2009 from prospectuses and statements of the Securities Commission of Malaysia, consist of 20 growth and 14 income funds. In this study, specification of Battese and Coelli (1992) is employed to measure an efficiency scores. All data were analyzed using 5780 Nor Azlida Aleng et al. Frontier software Version 4.1 to obtain the maximum likelihood method to estimate the parameters of stochastic production. The finding shows that the mean efficiency scores of growth fund was efficient. Meanwhile the income fund showed its average score technical efficiency is not efficient, but has increased in each year which indicates the funds have performed well gradually. Hopefully with categorizing ranks of each fund based on their efficinecy, manage to assist the investors in making a wise decision for a great return
Analisis kecekapan relatif bagi industri saham amanah menggunakan pendekatan ekonometrik
No full textMakalah ini bertujuan untuk mengukur kecekapan relatif industri saham amanah di Malaysia menggunakan kaedah Analisis Sempadan Stokastik (ASS) bagi tahun 2003 dan 2004 yang terdiri daripada 65 buah dana daripada 16 buah syarikat pengurusan dana saham amanah di Malaysia. Dana yang dikaji dibahagikan kepada tiga jenis, iaitu pertumbuhan, pendapatan dan Islam/Syariah menggunakan spesifi kasi Batt ese dan Coelli (1992). Analisis data dan keputusan kajian menggunakan program Frontier Versi 4.1 (Coelli, 1996). Kecekapan merupakan pengukuran penting yang boleh digunakan untuk menilai perkembangan dan pertumbuhan ekonomi sesebuah negara
Outlier detection based on robust parameter estimates
No full textOutliers can influence the analysis of data in various different
ways. The outliers can lead to model misspecification, incorrect
analysis results and can make all estimation procedures
meaningless. In regression analysis, ordinary least square
estimation is most frequently used for estimation of the
parameters in the model. Unfortunately, this estimator is
sensitive to outliers. Thus, in this paper we proposed some
statistics for detection of outliers based on robust estimation,
namely least trimmed squares (LTS). A simulation study was
performed to prove that the alternative approach gives a better
results than OLS estimation to identify outliers
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
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