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Changing behaviours and attitudes towards more sustainable individual energy consumption is a difficult topic to address. After identifying the most recurrent factors influencing the bad energy consumption, society's environmental short-sightedness, a lack of individual responsibility and a tendency to put responsibility upon firms, institutions, and governments, the authors evaluated the effect that business practices can have on individual behaviour. By qualifying as highly credible sources of information, positioning themselves as examples to follow, and providing its employees with the necessary smart and innovative technology, business communities can have a major impact on changing individual behaviours towards more sustainable energy consumption. 相似文献
134.
Gallardo-Alvarado Jaime García-Murillo Mario A. Islam Md. Nazrul Abedinnasab Mohammad H. 《Journal of Mechanical Science and Technology》2016,30(5):2303-2309
Journal of Mechanical Science and Technology - This work reports on the position, velocity and acceleration analyses of a four-degrees-of-freedom parallel manipulator, 4-DoF-PM for brevity, which... 相似文献
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136.
Pedrini Matteo Langella Valentina Battaglia Mario Alberto Zaratin Paola 《Scientometrics》2018,114(3):1227-1250
Scientometrics - In recent year, a growing attention is dedicated to the assessment of research’s social impact. While prior research has often dealt with results of research, the last decade... 相似文献
137.
Machine Learning - Anomaly detection is a hard data analysis process that requires constant creation and improvement of data analysis algorithms. Using traditional clustering algorithms to analyse... 相似文献
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One can measure “energy quantities” – e.g. joules, BTU, quads – but only at a given scale and within a specific narrative about energy conversions at the time. Therefore, at the moment of generating aggregate indicators, the arithmetic summing of assessments of energy quantities referring to different scales and narratives is meaningless. This paper addresses epistemological problems typical of energy accounting, which are at the moment tackled by acknowledging the existence of unspecified “qualitative differences” among different energy forms – e.g. a joule of electricity has more “value” than a joule of coal. Three energy forms referring to different scales and narratives about energy conversions are relevant for national accounting: Primary Energy Sources (PES), Energy Carriers (EC), and End Uses (EU). We critically examine the usefulness of current energy statistics in relation to this distinction. The conventional linear representation – flow chart – based on a single scale and a single quantitative accounting confuses the three semantic categories and entails an important loss of information. Finally, we illustrate an innovative scheme for energy accounting across hierarchical levels that: (i) addresses the autocatalytic nature of energy transformations; (ii) provides a multi-scale quantitative representation; and (iii) preserves the semantic distinction between relevant energy forms (PES, EC, and EU). 相似文献
140.
Giuseppe Ragosta Mario Abbate Pellegrino Musto Gennaro Scarinzi 《Journal of Materials Science》2012,47(6):2637-2647
This article examines the effects of structural changes and thermal aging treatments on the relaxation processes and mechanical
properties of three polyimides differing for their molecular structure i.e. PMDA-ODA, 6FDA-ODA, and 6FDA-6FpDA. These polyimides
were obtained by thermal imidization of their polyamic acid precursors, which were synthesized from the respective dianhydrides
[pyromellitic anhydride (PMDA), hexahydrofluoroisopropylidene diphthalic anhydride (6FDA)], and diamines [4,4′-diaminodiphenyl
ether (ODA), 4,4′-(hexafluoroisopropylidene) dianiline (6FpDA)]. After the curing process, the polyimides were thermally aged
at a fixed temperature for various times Dynamic mechanical measurements performed in a multi-frequency mode, were used to
determine the glass-rubber and sub-glass transitions, as well as the activation energy of the β transition. It was found that
the T
g decreased in the order PMDA-ODA > 6FDA-6FpDA > 6FDA-ODA as a result of an increased chain rigidity and molecular packing
induced by charge transfer interactions during the thermal imidization process. The β sub-glass transition showed two relaxation
processes identified as β′ and β′′. The β′ process was attributed to the local motion of the diamine constituents while the
β′′ process was caused by the local motion of the dianhydride moiety. The cooperativity of these molecular motions was also
assessed via the Starkweather method. The thermal aging enhanced the state of aggregation of polyimide chains and thus the
T
g and the sub-glass transition properties. This effect was particularly marked for the PMDA-ODA polyimide. Also the mechanical
properties were significantly affected by chemical structure and aging treatments. For non-aged samples the more influenced
parameter was the elongation at break, which decreased in the order PMDA-ODA > 6FDA-ODA > 6FDA-6FpDA. The aging enhanced the
elastic modulus and the tensile strength and reduced the elongation at break. 相似文献