Results for 'activation energy'

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  1.  18
    Activation energy and sub grain size-creep rate relations in sodium chloride.S. L. Robinson, P. M. Burke & O. D. Sherby - 1974 - Philosophical Magazine 29 (2):423-427.
  2.  6
    Activation energies for high temperature creep of polycrstalline zinc.W. J. M. Tegart & Oleg D. Sherby - 1958 - Philosophical Magazine 3 (35):1287-1296.
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  3.  11
    The activation energy for creep at intermediate temperatures.Mark J. Klein - 1970 - Philosophical Magazine 21 (174):1267-1274.
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  4.  15
    On the activation energy of high temperature creep in metals.Paul Feltham - 1957 - Philosophical Magazine 2 (17):584-588.
  5.  11
    Thermal stability and activation energy of some compositions of Ge–Te–Cu chalcogenide system.A. Dahshan, K. A. Aly & M. T. Dessouky - 2008 - Philosophical Magazine 88 (16):2399-2410.
  6.  8
    Determination of the activation energy by stochastic analyses of molecular dynamics simulations of dislocation processes.Ghiath Monnet - 2011 - Philosophical Magazine 91 (29):3810-3829.
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  7.  11
    The apparent activation energy for serrated yielding.William Charnock - 1969 - Philosophical Magazine 19 (157):209-211.
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  8.  2
    On values of activation energy for migration of single vacancies in metals.K. A. Osipov - 1971 - Philosophical Magazine 23 (181):167-174.
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  9.  39
    Modeling of pathophysiological coupling between brain electrical activation, energy metabolism and hemodynamics: Insights for the interpretation of intracerebral tumor imaging.Agnès Aubert, Robert Costalat, Hugues Duffau & Habib Benali - 2002 - Acta Biotheoretica 50 (4):281-295.
    Gliomas can display marked changes in the concentrations of energy metabolism molecules such as creatine (Cr), phosphocreatine (PCr) and lactate, as measured using magnetic resonance spectroscopy (MRS). Moreover, the BOLD (blood oxygen level dependent) contrast enhancement in functional magnetic resonance imaging (fMRI) can be reduced or missing within or near gliomas, while neural activity is not significantly reduced (so-called neurovascular decoupling), so that the location of functionally eloquent areas using fMRI can be erroneous. In this paper, we adapt a (...)
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  10.  7
    On the measurement of the activation energy for creep in anelastic solids.N. G. McCrum & E. L. Morris - 1962 - Philosophical Magazine 7 (84):2115-2118.
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  11.  8
    A possible determination of the activation energy for self-diffusion in aluminium.T. Federighi - 1959 - Philosophical Magazine 4 (40):502-510.
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  12.  8
    Relationship between structural and secondary relaxation in glass formers: Ratio between glass transition temperature and activation energy.D. Prevosto, S. Capaccioli, M. Lucchesi, S. Sharifi, K. Kessairi & K. L. Ngai - 2008 - Philosophical Magazine 88 (33-35):4063-4069.
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  13.  18
    Cross-slip in face-centered cubic metals: a general Escaig stress-dependent activation energy line tension model.Alon Malka-Markovitz & Dan Mordehai - 2018 - Philosophical Magazine 98 (5):347-370.
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  14.  5
    On the flow stress and activation energy for low-temperature deformation.G. B. Gibbs - 1969 - Philosophical Magazine 20 (166):863-865.
  15.  20
    Atomistic origin of the thermodynamic activation energy for self-diffusion and order-order relaxation in intermetallic compounds II: Monte Carlo simulation of B2-ordering binaries.P. Sowa, A. Biborski, M. Kozłowski, R. Kozubski, I. V. Belova & G. E. Murch - forthcoming - Philosophical Magazine:1-23.
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  16.  12
    Thermally assisted flux flow in MgB2: strong magnetic field dependence of the activation energy.A. Sidorenko *, V. Zdravkov, V. Ryazanov, S. Horn, S. Klimm, R. Tidecks, A. Wixforth, Th Koch & Th Schimmel - 2005 - Philosophical Magazine 85 (16):1783-1790.
  17. Active biological mechanisms: transforming energy into motion in molecular motors.William Bechtel & Andrew Bollhagen - 2021 - Synthese 199 (5-6):12705-12729.
    Unless one embraces activities as foundational, understanding activities in mechanisms requires an account of the means by which entities in biological mechanisms engage in their activities—an account that does not merely explain activities in terms of more basic entities and activities. Recent biological research on molecular motors exemplifies such an account, one that explains activities in terms of free energy and constraints. After describing the characteristic “stepping” activities of these molecules and mapping the stages of those steps onto the (...)
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  18.  73
    Active inference and free energy.Karl Friston - 2013 - Behavioral and Brain Sciences 36 (3):212-213.
    Why do brains have so many connections? The principles exposed by Andy Clark provide answers to questions like this by appealing to the notion that brains distil causal regularities in the sensorium and embody them in models of their world. For example, connections embody the fact that causes have particular consequences. This commentary considers the imperatives for this form of embodiment.
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  19.  6
    Activation of energy.Pierre Teilhard De Chardin - 1970 - New York,: Harcourt Brace Jovanovich.
    An important Christian philosopher contends that if human energy is channeled in the right direction, "upward and outward," spiritual energy as a motor force in the universe will outdistance technological advance. Index. Translated by Rene Hague. A Helen and Kurt Wolff Book.
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  20. Activation of Energy.Teilhard de Chardin & Thomas Corbishley - 1973 - Religious Studies 9 (1):101-103.
  21.  29
    AMP‐activated protein kinase: the energy charge hypothesis revisited.D. Grahame Hardie & Simon A. Hawley - 2001 - Bioessays 23 (12):1112-1119.
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  22. L'Activation de l'Énergie.Pierre Teilhard de Chardin - 1964 - Les Etudes Philosophiques 19 (2):322-322.
     
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  23. The Markov blankets of life: autonomy, active inference and the free energy principle.Michael David Kirchhoff - 2018 - Journal of the Royal Society Interface 15 (138).
    This work addresses the autonomous organization of biological systems. It does so by considering the boundaries of biological systems, from individual cells to Home sapiens, in terms of the presence of Markov blankets under the active inference scheme—a corollary of the free energy principle. A Markov blanket defines the boundaries of a system in a statistical sense. Here we consider how a collective of Markov blankets can self-assemble into a global system that itself has a Markov blanket; thereby providing (...)
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  24.  8
    The Role of Perceived Energy and Self-Beliefs for Physical Activity and Sports Activity of Patients With Multiple Sclerosis and Chronic Stroke.Julia Schüler, Wanja Wolff, Julian Pfeifer, Romina Rihm, Jessica Reichel, Gerhard Rothacher & Christian Dettmers - 2021 - Frontiers in Psychology 11.
    Physical activity counteracts some of the negative consequences associated with chronic neurological diseases. Here, we describe the levels of physical activity and sports activity in patients with multiple sclerosis and chronic stroke and test compliance with the recommendation for health-promoting physical activity of the World-Health Organization. Secondly, we tested for differences between the groups of patients, and thirdly, we examined relationships between PA and Sport with psychological indicators of perceived energy and self-beliefs. Psychological constructs were assessed with validated measures (...)
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  25.  8
    Energy Dreams: Of Actuality.Michael Marder - 2017 - Columbia University Press.
    The question of energy is among the most vital for the future of humanity and the flourishing of life on this planet. Yet, only very rarely (if at all) do we ask what energy is, what it means, what ends it serves, and how it is related to actuality, meaning-making, and instrumentality. Energy Dreams interrogates the ontology of energy from the first coinage of the word energeia by Aristotle to the current practice of fracking and the (...)
  26. Free energy: a user’s guide.Stephen Francis Mann, Ross Pain & Michael D. Kirchhoff - 2022 - Biology and Philosophy 37 (4):1-35.
    Over the last fifteen years, an ambitious explanatory framework has been proposed to unify explanations across biology and cognitive science. Active inference, whose most famous tenet is the free energy principle, has inspired excitement and confusion in equal measure. Here, we lay the ground for proper critical analysis of active inference, in three ways. First, we give simplified versions of its core mathematical models. Second, we outline the historical development of active inference and its relationship to other theoretical approaches. (...)
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  27.  5
    Methodological considerations for documenting the energy demand of dance activity: a review.Sarah Beck, Emma Redding & Matthew A. Wyon - 2015 - Frontiers in Psychology 6:137703.
    Previous research has explored the intensity of dance class, rehearsal and performance, and attempted to document the body’s physiological adaptation to these activities. Dance activity is frequently described as: complex, diverse, non-steady state, intermittent, of moderate to high intensity, and with notable differences between training and performance intensities and durations. Many limitations are noted in the methodologies of previous studies creating barriers to consensual conclusion. The present study therefore aims to examine the previous body of literature and in doing so, (...)
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  28.  3
    Conscious energy and the evolution of philosophy.Joseph P. Provenzano - 2021 - Saint Louis, MO: En Route Books and Media, LLC.
    Part 1: What is philosophy? Introduction -- A brief history of philosophy -- Part II: The evolution of philosophy. Reason -- Sense experience -- Reason, sense, and intuition -- Self-preservation/power -- Desire/Free will -- Science -- Language -- Additional human activities -- Philosophy : the lessons learned -- Part III: The philosophy of conscious energy. Pierre Teilhard de Chardin (1881-1955) -- The philosophy of conscious energy -- Comments.
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  29.  7
    Energy and forces as aesthetic interventions: politics of bodily scenarios.Sabine Huschka & Barbara Gronau (eds.) - 2019 - Bielefeld: Transcript.
    This volume collects academic as well as artistic explorations highlighting historical and contemporary approaches to the energetic in its aesthetic and political potential. Energetic processes straddle dance, performance art, and installations. They transform the body, evoke specific states, and push towards intensities. In contemporary dance and performance art, energetic processes are no longer mere conditions of form but appear as distinct aesthetic interventions. The contributions in this volume submit these to thorough investigation, elucidating maneuvers of mobilization, activation, initiation, regulation, (...)
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  30.  16
    Not the Function of Eating, but Spontaneous Activity and Energy Expenditure, Reflected in “Restlessness” and a “Drive for Activity” Appear to Be Dysregulated in Anorexia Nervosa: Treatment Implications.Regina C. Casper - 2018 - Frontiers in Psychology 9.
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  31.  17
    New Perspectives on Spontaneous Brain Activity: Dynamic Networks and Energy Matter.Arturo Tozzi, Marzieh Zare & April A. Benasich - 2016 - Frontiers in Human Neuroscience 10.
  32. Active Inference and the Primacy of the ‘I Can’.Jelle Bruineberg - 2017 - Philosophy and Predictive Processing.
    This paper deals with the question of agency and intentionality in the context of the free-energy principle. The free-energy principle is a system-theoretic framework for understanding living self-organizing systems and how they relate to their environments. I will first sketch the main philosophical positions in the literature: a rationalist Helmholtzian interpretation (Hohwy 2013; Clark 2013), a cybernetic interpretation (Seth 2015b) and the enactive affordance-based interpretation (Bruineberg and Rietveld 2014; Bruineberg et al. 2016) and will then show how agency (...)
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  33.  3
    Community Energy: A Social Architecture for an Alternative Energy Future.Angela High-Pippert & Steven M. Hoffman - 2005 - Bulletin of Science, Technology and Society 25 (5):387-401.
    Community energy based on a mix of distributed technologies offers a serious alternative to the current energy system. The nature of community energy and the role that such initiatives might play in the general fabric of civic life is not, however, well understood. Community energy initiatives might involve only those citizens who prefer to be actively and continuously involved in intense, democratic debate. A more robust conceptualization of community energy might, on the other hand, be (...)
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  34. Is the free-energy principle a formal theory of semantics? From variational density dynamics to neural and phenotypic representations.Inês Hipólito, Maxwell Ramstead & Karl Friston - 2020 - Entropy 1 (1):1-30.
    The aim of this paper is twofold: (1) to assess whether the construct of neural representations plays an explanatory role under the variational free-energy principle and its corollary process theory, active inference; and (2) if so, to assess which philosophical stance - in relation to the ontological and epistemological status of representations - is most appropriate. We focus on non-realist (deflationary and fictionalist-instrumentalist) approaches. We consider a deflationary account of mental representation, according to which the explanatorily relevant contents of (...)
     
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  35.  28
    Active inference models do not contradict folk psychology.Ryan Smith, Maxwell J. D. Ramstead & Alex Kiefer - 2022 - Synthese 200 (2):1-37.
    Active inference offers a unified theory of perception, learning, and decision-making at computational and neural levels of description. In this article, we address the worry that active inference may be in tension with the belief–desire–intention model within folk psychology because it does not include terms for desires at the mathematical level of description. To resolve this concern, we first provide a brief review of the historical progression from predictive coding to active inference, enabling us to distinguish between active inference formulations (...)
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  36.  26
    Energy metabolism and the evolution of reproductive suppression in the human female.Grazyna Jasienska - 2003 - Acta Biotheoretica 51 (1):1-18.
    Reproduction places severe demands on the energy metabolism in human females. When physical work entails higher energy expenditure, not enough energy will be left for the support of the reproductive processes and temporal suppression of the reproductive function is expected. While energy needed for reproduction may be obtained by increases in energy intake, utilization of fat reserves, or reallocation of energy from basal metabolism, several environmental or physiological constraints render such solutions unlikely. For human (...)
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  37.  4
    Energy Ethics.Kirsten Halsnæs - 2009 - In Jan Kyrre Berg Olsen, Stig Andur Pedersen & Vincent F. Hendricks (eds.), A Companion to the Philosophy of Technology. Oxford, UK: Wiley‐Blackwell. pp. 422–425.
    This chapter contains sections titled: Energy and Economic Growth Transportation Access Exhaustible Resources References and Further Reading.
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  38.  37
    Energy or Information?Igor Čatić, Maja Rujnić-Sokele & Borislav Dadić - 2010 - Synthesis Philosophica 25 (1):173-180.
    The descriptions of the development of events in nature from the moment of the Big Bang are using concepts of ‘energy’ and ‘matter’. Systemically, these descriptions lack the third component of every system – information. This brings up the question of where in these descriptions information is and does it possibly precede energy. The analysis used the general systems theory, one of the powerful methods in modern science. For the description of the general technology , from the Big (...)
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  39.  88
    The free energy principle: it’s not about what it takes, it’s about what took you there.Axel Constant - 2021 - Biology and Philosophy 36 (2):1-17.
    Philosophical writings on the free energy principle in the life sciences often give the impression that minimising free energy is sufficient for life. But minimising free energy is not a sufficient condition for life. In fact, one can perfectly well conceive of a system that actively minimises its free energy, and for this very reason moves inexorably towards death. So, where does the assumption of this entailment relation come from? There is indeed an entailment relation, but (...)
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  40.  27
    Active Inference and Abduction.Ahti-Veikko Pietarinen & Majid D. Beni - 2021 - Biosemiotics 14 (2):499-517.
    The background target of the research going into the present article is to forge an intellectual alliance between, on the one hand, active inference and the free-energy principle (FEP), and on the other, Charles S. Peirce’s theory of semiotics and pragmatism. In the present paper, the focus is on the allegiance between the nomenclatures of active and abductive inferences as the proper place to begin reaching at that wider target. The paper outlines the key conceptual elements involved in a (...)
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  41. The active inference approach to ecological perception: general information dynamics for natural and artificial embodied cognition.Adam Linson, Andy Clark, Subramanian Ramamoorthy & Karl Friston - 2018 - Frontiers in Robotics and AI 5 (21):1-22.
    The emerging neurocomputational vision of humans as embodied, ecologically embedded, social agents—who shape and are shaped by their environment—offers a golden opportunity to revisit and revise ideas about the physical and information-theoretic underpinnings of life, mind, and consciousness itself. In particular, the active inference framework makes it possible to bridge connections from computational neuroscience and robotics/AI to ecological psychology and phenomenology, revealing common underpinnings and overcoming key limitations. AIF opposes the mechanistic to the reductive, while staying fully grounded in a (...)
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  42.  14
    Georges Sorel’s political energy.Luke Collison - 2021 - History of European Ideas 47 (8):1348-1361.
    The concept of ‘political energy’ is often treated as merely a rhetorical synonym for enthusiasm and active engagement. However, as Bruce Clarke’s Energy Forms argues there is an allegorical traffic of ideas between politics and science that reaches an apotheosis in the early-twentieth century interest in energy. In the field of the ‘energy-humanities’ inaugurated by Clarke, the work of George Sorel remains largely overlooked. Situating itself in this field, my paper investigates the interplay of science and (...)
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  43.  48
    Aligning the free-energy principle with Peirce’s logic of science and economy of research.Majid D. Beni & Ahti-Veikko Pietarinen - 2021 - European Journal for Philosophy of Science 11 (3):1-21.
    The paper proposes a way to naturalise Charles S. Peirce’s conception of the scientific method, which he specified in terms of abduction, deduction and induction. The focus is on the central issue of the economy of research in abduction and self-correction by error reduction in induction. We show how Peirce’s logic of science receives support from modern breakthroughs in computational neuroscience, and more specifically from Karl Friston’s statements of active inference and the Free Energy Principle, namely the account of (...)
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  44.  27
    Bataille's Peak: Energy, Religion, and Postsustainability.Allan Stoekl - 2007 - University of Minnesota Press.
    As the price of oil climbs toward $100 a barrel, our impending post-fossil fuel future appears to offer two alternatives: a bleak existence defined by scarcity and sacrifice or one in which humanity places its faith in technological solutions with unforeseen consequences. Are there other ways to imagine life in an era that will be characterized by resource depletion? The French intellectual Georges Bataille saw energy as the basis of all human activity--the essence of the human--and he envisioned a (...)
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  45.  5
    Energy from the South towards Peace: The Role of UNASUR in Preventing Internal Political Conflict.Eduardo Soto Parra - 2014 - Journal for Peace and Justice Studies 24 (1):87-117.
    This article is about the novel role of the Unión de Naciones Suramericanas (South American Nations Union) - UNASUR as a peacekeeper in the SouthAmerican region. It begins with an overview of UNASUR, its history, legal framework, and its mandate related to peacekeeping activities. Then, the efforts for regional integration and peacekeeping are addressed, with an explanation of the different frameworks backing those intents and the new peacemaking body known as UNASUR. Examples of political conflict are outlined, namely those in (...)
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  46.  19
    Activation processes in ligand-activated G protein-coupled receptors: A case study of the adenosine A2A receptor.R. Scott Prosser, Libin Ye, Aditya Pandey & Alexander Orazietti - 2017 - Bioessays 39 (9):1700072.
    Here we review concepts related to an ensemble description of G-protein-coupled receptors. The ensemble is characterized by both inactive and active states, whose equilibrium populations and exchange rates depend sensitively on ligand, environment, and allosteric factors. This review focuses on the adenosine A2 receptor, a prototypical class A GPCR. 19F Nuclear Magnetic Resonance studies show that apo A2AR is characterized by a broad ensemble of conformers, spanning inactive to active states, and resembling states defined earlier for rhodopsin. In keeping with (...)
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  47. How to count biological minds: symbiosis, the free energy principle, and reciprocal multiscale integration.Matthew Sims - 2020 - Synthese 199 (1-2):2157-2179.
    The notion of a physiological individuals has been developed and applied in the philosophy of biology to understand symbiosis, an understanding of which is key to theorising about the major transition in evolution from multi-organismality to multi-cellularity. The paper begins by asking what such symbiotic individuals can help to reveal about a possible transition in the evolution of cognition. Such a transition marks the movement from cooperating individual biological cognizers to a functionally integrated cognizing unit. Somewhere along the way, did (...)
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  48. Brain activity and cognition: a connection from thermodynamics and information theory.Guillem Collell & Jordi Fauquet - 2015 - Frontiers in Psychology 6.
    The connection between brain and mind is an important scientific and philosophical question that we are still far from completely understanding. A crucial point to our work is noticing that thermodynamics provides a convenient framework to model brain activity, whereas cognition can be modeled in information-theoretical terms. In fact, several models have been proposed so far from both approaches. A second critical remark is the existence of deep theoretical connections between thermodynamics and information theory. In fact, some well-known authors claim (...)
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  49. Investigating Cognitive Load in Energy Network Control Rooms: Recommendations for Future Designs.Umair Afzal, Arnaud Prouzeau, Lee Lawrence, Tim Dwyer, Saikiranrao Bichinepally, Ariel Liebman & Sarah Goodwin - 2022 - Frontiers in Psychology 13.
    This study analyzed and explored the cognitive load of Australian energy market operators managing one of the longest inter-connected electrical networks in the world. Each operator uses a workstation with seven screens in an active control room environment, with a large coordination screen to show information and enable collaboration between different control centers. Cognitive load was assessed during both training scenarios and regular control room operations via the integration of subjective and physiological measures. Eye-tracking glasses were also used to (...)
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  50.  4
    Effective cooperation with energy consumers.Barbara Begier - 2014 - Journal of Information, Communication and Ethics in Society 12 (2):107-121.
    Purpose – Research described in this paper focuses on a need to consult inhabitants about a new technical solution introduced in a country-wide scale like it is in the case of a smart metering system – finally, all energy consumers will become its users. Its social acceptance is required. So it is a good example of an ethical approach to introduce an innovative solution in the society. The conducted research was intended to help developing strategy to build appropriate relationships (...)
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