1,720,954 research outputs found
Penetration of renewable power in Bangladesh
No full textDespite being a developing country in South Asia with a consistent ~7% GDP growth rate over the last two decades (2000–present), Bangladesh pledged to cut down its carbon emissions to 10% by 2020 from electricity generation in its first Renewable Energy Policy enunciated in 2014. Later in 2020, it heightened its ambition to green the entire power sector by 2050. It decided on the progressive adoption of renewable technologies to tackle climate change and ensure energy security. This research addresses the central question of discerning the optimum policies and priority areas required to guide Bangladesh through its sustainable energy infrastructure transformation and to support it towards its aspiration of becoming a developed country by 2041. Following an extensive literature review, the study generated a conceptual framework for a vector autoregressive nonlinear logistic energy transition model for Bangladesh, conforming to several transition factors and variables, such as past trends and future forecasts of energy demand, economic affordability, and other green transition factors pertinent to Bangladesh. As the first step, the primary assessment of the renewable potential (solar, wind, biomass, tidal, etc.) in Bangladesh found it quite challenging to meet the future demand only through local green resources at the current efficiency level and transition rate. The seasonal variability, cooling load variance and future changes among appliances will also play a vital role in the power demand scenarios. The novel "sociotechnical capacity for green power transition" model incorporates the mapping and estimation of available resources, reviews of economic growth patterns and forecasts, advancement of technology and global market trends, cross-border power sharing, trade policies and other influencing variables. The model shows the capacity of the country to afford the maximum feasible amount of green energy at a particular time in the future based on the projections of the influential variables. Initially, the model considered seventeen variables that may contribute to the future green transition in Bangladesh, but nine variables were used following the concept of collinearity and correlation. A logistic vector autoregression model was coded in MATLAB based on the past ten years' trend (since renewable power in Bangladesh took off after 2010) and simulated to forecast future transition pathways. The simulation results indicate the effects and extent of the impact of various influencing factors on the green transition scenarios. Based on the findings, this work suggested how the renewable share in the energy mix should be progressively augmented according to factors like the future escalation in financial affordability, land availability or the technical advancement of the suitable renewable systems' overall efficiency for the country. The simulation results graphically indicate the prioritisation across the variables should be foreign aid> energy storage price> system efficiency>direct green power import>carbon taxation>per capita income>renewable power budget>land acquisition of large solar plant>renewable electricity price. It was then examined through the homologous findings from a survey and an interview to verify the reality nexus. The work concluded with formulating recommendations and illustrated ideas based on the findings intended to support policymakers and energy managers. The policy recommendations included prioritising bringing more foreign aid and support in, maximising of use of industrial building rooftops, interconnecting household rooftop solar arrays to maximise aggregated power harvest saving agrarian lands, preferring applications like direct solar irrigation to opt out of expensive battery usage, facilitate direct solar charging station to recharge electric vehicles, etc. It also forecasted the high times for adopting mass energy storage upon becoming viable for base load supply. In that nexus, the work demonstrated how the policy mix changes could accelerate Bangladesh's transition 5-8 times faster compared to the ‘current business as usual' path. The suggestions and ideas will help policymakers better understand the dynamic interrelations between different transition factors to decide over and plan the wide-scale adoption modes and implementation of renewable energy systems according to the accessible resources and fiscal potential of different regions in Bangladesh
Solar Power Potential from Industrial Buildings and Impact on Electricity Supply in Bangladesh
No full textBangladesh has a rapidly increasing population and coupled with healthy economic growth, is resulting in a rising energy demand. The country also aims to increase its renewable share of electricity to 10% by 2030. However, due to limited wind resources, solar energy seems to be most appropriate to deliver such a target. However, in a land-scarce country, this presents a major challenge, which this work aims to partially address. Being a globally leading producer of commodities, Bangladesh has a considerable number of large manufacturing plants with appropriate roofs that could be used for deploying solar energy conversion systems at scale. A methodology is presented which identified and assessed 6045 such plants, which have roof areas ranging from 100 m2 to 50,000 m2, and modelled the deployment of solar photovoltaic (PV) technology that can provide power through site available grid infrastructure. Such deployment takes advantage of net metering regulations to enhance the case for such power generation. A techno-economic assessment was also presented, addressing how such utilisation can support the 10% renewables target of Bangladesh without impacting scarce lands. The results showed that around 7.4 GWp of PV capacity can be achieved on such roofs with a corresponding annual electricity generation of 11 TWh. This represents more than 6% of Bangladesh’s current electricity consumption and more than half of the 2030 target. Furthermore, the deployment will save 13,000 acres of farmland, as well as providing power through site available grid infrastructure saving on investment if the systems are deployed on land. These results are likely to influence policy to support the presented proposition, not only in terms of increasing the renewable energy share in the country’s electricity supply mix but also in conserving much-needed land for agriculture
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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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