1,721,111 research outputs found
À travers le miroir d’une bibliographie
No full textDi Cosmo Roberto. À travers le miroir d’une bibliographie. In: Le médiéviste et l'ordinateur, N°35, été 1997. Bibliographies. pp. 16-19
Energy Savings in Biological Process Aeration Systems: Coupling Modelling with Off-Gas Tests
Full text linkSIST&MS: Geoportale open source per aggiornare i dati degli ITAR e valutare indici ed indicatori ambientali ed energetici
Full text linkEnergy efficient WWTPs: simulation and validation of a decision support system through modelling
No full textMathematical modelling has been tested as a decision support system to management of a biological WWTP, aimed at optimizing energetic efficiency. A conventional activated sludge plant has been studied and the ASM1 mathematical model has been implemented, calibrated and validated, by using West 2012, DHI software. Optimal operating strategies, under different operating conditions, such as variable influent loading, have been defined. Also, indicators concerning energy efficiency and effluent quality have been defined and quantified
[Rp] Reproducing and replicating the OCamlP3l experiment
Full text linkInternational audienceThis article provides a full report on the effort to reproduce the work described in the article "Parallel Functional Programming with Skeletons: the OCamlP3L experiment" [1], written in 1998. It presented OCamlP3l [2], a parallel programming system written in the OCaml programming language [3]. The system described in [1] was a breakthrough in many respects: it showed that it was possible to implement parallel skeletons [4] a combinators in a functional programming language; it showed how this parallel programming style allowed to write a single source code that produced executables targeted for sequential execution, hence enabling usual debugging techniques, and executables for parallel execution; and it led to the introduction in OCaml of the ability to marshal functional closures, used later on by a wealth of different applications. The article consists of two main parts, the system description, and the system evaluation, so replicating the results involves the following: 1. recover the source code of the OCamlP3l system 2. make it compile and run on a modern OCaml 4.x system 3. recover the tests used in the system evaluation 4. verify we can get speedup in performance similar to the one reported in the article. When starting this replication effort, we had the following expectations: 1. recover the source code should be easy: just look in the paper directory on our machines 2. compile and run might be difficult: the code was designed 23 years ago for OCaml 1.07 3. recover tests should be easy: just look in the paper directory on our machines 4. verify speedup might be challenging: many parameters may have changed in microprocessors and network. The reality turned out to be surprisingly different. In the following we sum up the steps that we performed to address each of these four challenges, and the final outcome. Copyright © 2020 R. Di Cosmo and M. Danelutto, released under a Creative Commons Attribution 4.0 International license. Correspondence should be addressed to Di Cosmo, Roberto ([email protected]) The authors have declared that no competing interests exist. Code is available at https://archive.softwareheritage.org/swh:1:rev:2db189928c94d62a3b4757b3eec68f0a4d4113f0;origin=https://gitorious.org/ocamlp3l/ocamlp3l_cvs.git/.-SWH swh:1:rev:2db189928c94d62a3b4757b3eec68f0a4d4113f0;origin=https://gitorious.org/ocamlp3l/ocamlp3l_cvs.git/
Monitoring denitrification by means of pH and ORP in continuous-flow conventional activated sludge processes
Full text linkIndirect signal analysis (pH, ORP and DO) are often used in monitoring and control of SBRs
(Sequencing Batch Reactors), where operating conditions can be clearly identified during the various
cyclic phases. Only few studies applied this methodology to control continuous flow plants, as it is
much more difficult to identify operating conditions because of continually variable inflow characteristics.
This work applied indirect signal analysis to control pre-denitrification in continuous-flow
activated sludge processes: (i) a laboratory-scale plant, fed with synthetic wastewater, simulating real
municipal wastewater and (ii) a pilot-scale plant, fed with real sewage. Three different ranges of ORP
values identify three operational conditions of the denitrification process. (1) ORP > 0 mV means
that nitrates and/or nitrites are present, possibly due to a low C/N ratio. (2) –50 < ORP < –200 mV is
typical of normal operating conditions, that is with a balanced C/N ratio. (3) ORP < –350 mV means
that oxidized nitrogen load is too low or that C/N exceeds the stoichiometric ratio. The trend of pH,
instead, points out if and how the process is evolving from one to another operating condition. The
correlation between pH and ORP signals (as well as their derivatives) allows to restore normal operating
conditions by acting on the internal recycle flow-rate. Improved denitrification process ensures
lower effluent nitrate concentration, and reduce external carbon dosage to achieve stricter nitrogen
limits
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
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