1,721,211 research outputs found
Strategies for technology-based economic development
Full text linkThesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1993.Includes bibliographical references (leaves 110-112).by Amal Muhammad Musa Alayan.M.S
Preparation of commercial polyaniline composites for ammonia detection / Muhammad Musa Jusoff Albar
Full text linkPolyaniline (PANI) is one of the versatile conducting polymers due to inexpensive monomer, environmental benign, high conductivity and easy preparation. In this study, PANI composites were synthesized via in-situ polymerization. PANI was doped by Dodecylbenzene sulfonic acid (DBSA) and mixed with composite shells (Egg shells, Crab shells and Mussel shells) to enhance the conductivity and stability of PANI in gas sensor detection. The characterizations were done by Fourier transform infrared (FTIR) and ultraviolet-visible (UV-Vis). FTIR spectra depict the main characteristic peaks of commercial PANI at ~1599 cm−1 and ~1462 cm−1 which indicates quinoid and benzoid units, respectively. UV-Vis spectra further confirmed the commercial PANI is in the doped state by exhibiting a characteristic peak at ~800 nm. Sensor measurement and performance of commercial PANI and PANI composite films were studied in terms of conductivity, selectivity, reusability and long-term stability. For sensor measurement, commercial PANI and PANI/CS shows comparable results which their LOD values are 14.45 and 15.42 respectively. PANI/CS film also exhibited best selectivity for NH3 in the presence of common interfering species such as hexane, ethanol and acetone gas due to its ion-dipole interaction. For reusability, commercial PANI, PANI/CS and PANI/ES can be reused for 5,4,3 respectively.
Finally, for the long-term stability, PANI/CS has shown the highest sensitivity after 7 days compared to commercial PANI and PANI/ES. In conclusion, PANI/CS shows the best application for NH3 detection
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
Challenges in takaful application within conventional insurance framework in Nigeria: The imperative for legislative harmonization of regulatory instruments / Muhammad Musa Saleh
Full text linkThe Nigerian insurance industry as a growth sector is struggling and stagnant despite its immense potential. The pervasive insurance gap induced by the lack of deepening insurance penetration has succeeded in financially excluding and underserving the greater Muslim majority of the populace. The Takaful Operational Guidelines, introduced in 2013 is adjudged an avenue for expanding into new geographies and client segments flavoured with a Shari‘ah-compliant appeal in bridging the endemic insurance gap. However, the Guidelines, Insurance Act, and a host of other enabling regulatory instruments are enmeshed in a web of regulatory conflict and ambiguity - conditions inimical to the successful application of Takaful
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
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