1,721,120 research outputs found
Real-time feedback on electricity consumption: evidence from a field experiment in Italy
Full text linkSmart meters can help citizens in optimizing energy consumption patterns. However, mixed evidence exists on their effectiveness in reducing energy demand and especially in levelling off the daily peaks of electricity load curves. Here, we evaluate the impact of providing real-time feedback on electricity consumption from a field trial in Italy. We combine standard regressions with machine learning techniques on high-frequency data to quantify impacts on both levels and patterns of electricity use. Results indicate that real-time feedback can moderately decrease electricity consumption (between 0.5 and 1.9% depending on model specification), but that it does not promote load shifting throughout the day by itself. Machine learning reveals evidence of significant household heterogeneity in the behavioral response
Multiple Value Stream Mapping: how to implement Work Load Control in complex systems
No full textNowadays, lean thinking has proven its effectiveness in reducing wastes and boosting manufacturing performances. Unfortunately, there is no foolproof way to implement it, as lean principles must always be reinterpreted to fit the specific requirements of the industry where they need to be applied. What remains constant in every implementation is that, first of all, the status quo of the company must be understood, before envisaging lean solutions. This necessity is even more strategic for those manufacturing environments where performances depend on several interrelated parameters, such as High-Variety Low-Volume (HVLV) job shops.This paper tackles this problem by introducing the Multiple-Values Stream Mapping (M-VSM), an innovative framework integrating Values Stream Mapping with other tools typical of manufacturing engineering. Although the framework is flexible in nature, it focuses on Work Load Control, since this hybrid technique is recognized in the literature as the main choice for HVLV job shop systems. In order to demonstrate both its quality and practical utility, M-VSM is introduced step by step using a case study taken as an example
Multiple value stream mapping: how to implement Work Load Control in complex systems
No full textNowadays, lean thinking has proven its effectiveness in reducing wastes and boosting manufacturing performances. Unfortunately, there is no foolproof way to implement it, as lean principles must always be reinterpreted to fit the specific requirements of the industry where they need to be applied. What remains constant in every implementation is that, first of all, the status quo of the company must be understood, before envisaging lean solutions. This necessity is even more strategic for those manufacturing environments where performances depend on several interrelated parameters, such as High-Variety Low-Volume (HVLV) job shops. This paper tackles this problem by introducing the Multiple-Values Stream Mapping (M-VSM), an innovative framework integrating Values Stream Mapping with other tools typical of manufacturing engineering. Although the framework is flexible in nature, it focuses on Work Load Control, since this hybrid technique is recognized in the literature as the main choice for HVLV job shop systems. In order to demonstrate both its quality and practical utility, M-VSM is introduced step by step using a case study taken as an example
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
Base hydrolysis kinetics and equilibria of [bis(2-pyridylmethyl)amine]chloroplatinum(II) and crystal and molecular structures of [Pt(bpma)Cl]Cl·H2o and [Pt(bpma)(OH2)](ClO4) 2·2H2O
No full textThe kinetics of base hydrolysis of [Pt(bpma)Cl]Cl [bpma = bis(2-pyridylmethyl)amine] have been studied (5 × 10-4 ≤ [OH-] ≤ 0.2 mol dm-3) at 25°C and I = 0.2 mol dm-3 by UV-Vis spectrophotometry. The derived rate law is consistent with a mechanism involving a rapid preequilibrium between the substrate [Pt(bpma)Cl]+ and the amido species [Pt(bpmaH-1)Cl] (pKa1 = 12.3) followed by slow solvolysis to give the corresponding aqua species [Pt(bpma)(OH2)]2+ [ks = (2.8 ± 0.2) × 10-4 s-1] and [Pt(bpmaH-1)(OH2)]+ [ks′ = (3.28 × 0.02) × 10-3 s-1] which undergo deprotonation and are converted to unreactive hydroxo species. The aqua complex [Pt(bpma)(OH2)](ClO4) 2·2H2O, independently isolated in the solid, behaves as a dibasic acid in water solution(25°C, I = 0.2 mol dm-3), the two ionization constants being related to the dissociation of the water molecule in the aquoamine (pK1 = 5.4 ± 0.1) and of the amino group in the hydroxo-amino species (pK2 = 11.5 ± 0.1), respectively. The X-ray crystal structures of [Pt(bpma)Cl]Cl·H2O and [Pt(bpma)(OH2)](ClO4) 2·2H2O are reported. © 2002 Elsevier Science Ltd. All rights reserved
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