1,720,961 research outputs found
Export Diversification Dynamics in Tanzania: Non-Traditional Products Approach
No full textThis paper empirically examines the influence of export diversification on export growth, following strides towards non-traditional exports diversification in Tanzania. The causal relationship between export growth and growth rate of aggregate non-traditional products using time series data from 1980 to 2012 was examined. Growth rate of aggregate traditional products was included in the study for comparable purposes. The results indicate that growth rate of aggregate non-traditional products has a statistically significant impact on the overall export growth in the short run while that of aggregate traditional products has recorded insignificant impact. This suggests that recent export growth in Tanzania is attributed to by non-traditional product growth. How-ever, there is no long run relationship between the two variables but a bi-directional short run relationship which runs from non-traditional products to export growth and vice-versa exists. Keywords: Export Diversification, Non-Traditional Product, Traditional product, export growth, vertical export diversification, horizontal export diversification. JEL: F4
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
No full textWe 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
Trade Liberalisation in SADC and the Economic Benefits of belonging to an RTA: The case of Tanzania
No full textThis paper examines the dynamics of trade liberalisation in the Southern Development Community (SADC), region and the economic benefits that Tanzania derives from SADC membership. The paper uses qualitative analysis and trade indices. The findings show that SADC is far behind its agreed schedule of transforming the region into a customs union and SADC intra-regional trade is very low, only South Africa and Mozambique seem to carry the potential to increase intraregional trade and benefit from SADC in the short run. On the other hand, Tanzania's economic benefits from SADC membership have remained trivial, though her exports and market share have been steadily increasing since the mid 1990s. However, Tanzania does not suffer adversely from the dual membership of EAC and SADC regions, despite its membership in the two overlapping RTAs making its trade regime complex because tariff reductions under EAC customs union are not compatible with SADC's hence resulting in problems in implementing the SADC Trade Protocol. However, the country may not need to withdraw its membership from either EAC or SADC due to signs of good prospect in the long run under the proposed harmonisation of the EAC and SADC trade regime through the Tripartiite Free Trade Area arrangement (COMESA-EAC-SADC)
A Comparative Analysis of the Application of Seasonal ARIMA and Exponential Smoothing methods in short run Forecasting Tourist Arrivals in Tanzania
No full textThis paper compared the performance of two forecasting models (Seasonal ARIMA and Exponential smoothing) in an attempt to identify the model that fits properly in forecasting tourist arrivals in a dynamic tourism industry in Tanzania. A two-staged approach to forecasting was carried out using monthly data for the period of 2000 to 2009. The models were assessed in similarly structured setting at the outset, and then best models identified at this level were compared in a differently structured setting. The results show that Seasonal ARIMA(4,1,4)(3,1,4)12 and Holt-Winters multiplicative smoothing method are effective in forecasting tourist arrivals in Tanzania in a similarly structured setting. However, when the two models were compared under different structures, the performance of Holt-Winters multiplicative smoothing method outstripped that of Seasonal ARIMA(4,1,4)(3,1,4)12. This suggests that Holt-Winters multiplicative smoothing method with Alpha (0.01), Delta (0.11) and Gamma (0.11) is more effective in forecasting tourist arrivals in Tanzania in the short run and it can be used to aid planning processes in the tourism industry. Moreover, the seasonality pattern that characterizes tourist arrivals in Tanzania highlights the need to promote more of local tourism so as to lessen the negative impacts associated with it. Keywords: Tourist Arrivals, Forecasting, Model, Seasonal ARIMA, Exponential Smoothing, Holt-Winters additive, Holt Winters Multiplicativ
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