Results for 'Potential energy surfaces'

983 found
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  1.  16
    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 (...)
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  2.  46
    Between the fundamental and the phenomenological: The challenge of 'semi-empirical' methods.Jeffry L. Ramsey - 1997 - Philosophy of Science 64 (4):627-653.
    Philosophers disagree how abstract, theoretical principles can be applied to instances. This paper generates a puzzle for law theorists, causal theorists and inductivists alike. Intractability can force scientists to use a "semi-empirical" method, in which some of an equation's theoretically-determinable parameters are replaced with values taken directly from the data. This is not a purely deductive or inductive process, nor does it involve causes and capacities in any simple way (Humphreys 1995). I argue the predictive successes of such methods require (...)
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  3.  30
    Solvent Dielectric Effect and Side Chain Mutation on the Structural Stability of Burkholderia cepacia Lipase Active Site: A Quantum Mechanical/Molecular Mechanics Study.A. Tahan & M. Monajjemi - 2011 - Acta Biotheoretica 59 (3):291-312.
    Quantum mechanical and molecular dynamics methods were used to analyze the structure and stability of neutral and zwitterionic configurations of the extracted active site sequence from a Burkholderia cepacia lipase, histidyl-seryl-glutamin (His86-Ser87-Gln88) and its mutated form, histidyl-cysteyl-glutamin (His86-Cys87-Gln88) in vacuum and different solvents. The effects of solvent dielectric constant, explicit and implicit water molecules and side chain mutation on the structure and stability of this sequence in both neutral and zwitterionic forms are represented. The quantum mechanics computations represent that the (...)
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  4. A neglected aspect of the puzzle of chemical structure: how history helps.Joseph E. Earley - 2012 - Foundations of Chemistry 14 (3):235-243.
    Intra-molecular connectivity (that is, chemical structure) does not emerge from computations based on fundamental quantum-mechanical principles. In order to compute molecular electronic energies (of C 3 H 4 hydrocarbons, for instance) quantum chemists must insert intra-molecular connectivity “by hand.” Some take this as an indication that chemistry cannot be reduced to physics: others consider it as evidence that quantum chemistry needs new logical foundations. Such discussions are generally synchronic rather than diachronic —that is, they neglect ‘historical’ aspects. However, systems of (...)
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  5.  75
    (1 other version)The alkaline solution to the emergence of life: Energy, entropy and early evolution.Michael J. Russell - 2007 - Acta Biotheoretica 55 (2):133-179.
    The Earth agglomerates and heats. Convection cells within the planetary interior expedite the cooling process. Volcanoes evolve steam, carbon dioxide, sulfur dioxide and pyrophosphate. An acidulous Hadean ocean condenses from the carbon dioxide atmosphere. Dusts and stratospheric sulfurous smogs absorb a proportion of the Sun’s rays. The cooled ocean leaks into the stressed crust and also convects. High temperature acid springs, coupled to magmatic plumes and spreading centers, emit iron, manganese, zinc, cobalt and nickel ions to the ocean. Away from (...)
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  6. Urban Heat Islands in Tirana, Albania. Analysis and Potential Solutions (8th edition).Klodjan Xhexhi - 2024 - Engineering Innovations 8:3-15.
    Cities and towns are expanding and thriving as a result of urbanization, which also significantly changes the local climate. One of the most significant phenomena associated with urbanization is the Urban Heat Island (UHI) effect. This phenomenon is increasingly being studied worldwide. The paper aims to investigate the UHI phenomenon in the metropolitan area of Tirana, Albania. It analyses the impact of the UHI on four specific locations in Tirana, its causes and mitigation measures, as well as variations in surface (...)
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  7.  79
    Quantum Potential Energy as Concealed Motion.Peter Holland - 2015 - Foundations of Physics 45 (2):134-141.
    It is known that the Schrödinger equation may be derived from a hydrodynamic model in which the Lagrangian position coordinates of a continuum of particles represent the quantum state. Using Routh’s method of ignorable coordinates it is shown that the quantum potential energy of particle interaction that represents quantum effects in this model may be regarded as the kinetic energy of additional ‘concealed’ freedoms. The method brings an alternative perspective to Planck’s constant, which plays the role of (...)
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  8. Designing the structures of discrete solid-alloy elements for broaching the holes of significant diameter based on the assessment of their strength.Ya Nemyrovskyi, I. Shepelenko, E. Posviatenko, Yu Tsekhanov, S. Polotnyak, Sergii Sardak, V. Bandura & Yu Paladiichuk - 2020 - Eastern-European Journal of Enterprise Technologies 3 (7):57-65.
    This paper addresses the issues related to designing and estimating the strength of solid-alloy elements in the deforming broaches of significant diameter (exceeding 150 mm) for the developed process of discrete broaching. The tool limit condition was assessed based on two strength criteria: the specific potential energy of shape change and the maximum tangent stresses. Numerical modeling using the finite element method has made it possible to derive the distribution of equivalent stresses in the tool elements and the (...)
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  9.  34
    Potentiality, energy and sway: From Aristotelian to modern to postmodern physics?Richard Polt - 2001 - Existentia 11 (1-2):27-41.
    Aristotle’s concept of dynamis (potentiality) is distinct from the modern concept of energy. Both concepts have problematic limitations. We need a third alternative that is here called “sway.”.
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  10.  28
    The Disappearance and Reappearance of Potential Energy in Classical and Quantum Electrodynamics.Charles T. Sebens - 2022 - Foundations of Physics 52 (5):1-30.
    In electrostatics, we can use either potential energy or field energy to ensure conservation of energy. In electrodynamics, the former option is unavailable. To ensure conservation of energy, we must attribute energy to the electromagnetic field and, in particular, to electromagnetic radiation. If we adopt the standard energy density for the electromagnetic field, then potential energy seems to disappear. However, a closer look at electrodynamics shows that this conclusion actually depends on (...)
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  11.  35
    Inertial Induction and the Potential Energy Problem.Amitabha Ghosh - 1995 - Apeiron 2 (2):39.
  12.  20
    The elastic potential energy of a thin foil deformed by an in-plane 60° dislocation.S. Youssef & R. Bonnet - 2007 - Philosophical Magazine 87 (31):4935-4948.
  13.  25
    Generalized stacking fault energy surfaces in the molecular crystal αRDX.Lynn B. Munday, Santiago D. Solares & Peter W. Chung - 2012 - Philosophical Magazine 92 (24):3036-3050.
  14.  56
    Inference to the Best Explanation: The Case of Potential Energy.Peter J. Riggs - 2020 - European Journal of Analytic Philosophy 16 (1):99-116.
    It has been claimed that kinetic energy is an objective physical quantity whilst at the same time maintaining that potential energy is not. However, by making use of the method of ‘inference to the best explanation’, it may be readily concluded that potential energy is indeed an objective physical quantity. This is done for an example drawn from the foundations of modern chemistry. In order to do so, the criteria of what counts as ‘most probable’ (...)
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  15.  16
    Evolution of Dynamic Reconfigurable Neural Networks: Energy Surface Optimality Using Genetic Algorithms.Robert E. Dorsey & John D. Johnson - 1997 - In Daniel S. Levine & Wesley R. Elsberry (eds.), Optimality in Biological and Artificial Networks? Lawrence Erlbaum. pp. 185.
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  16.  36
    Effect of Sn and Nb on generalized stacking fault energy surfaces in zirconium and gamma hydride habit planes.Yutaka Udagawa, Masatake Yamaguchi, Tomohito Tsuru, Hiroaki Abe & Naoto Sekimura - 2011 - Philosophical Magazine 91 (12):1665-1678.
  17.  28
    Calculation of the Hall coefficient for a mixed curvature, mixed field energy surface by the PFES approach.P. H. Cowley & R. S. Allgaier - 1974 - Philosophical Magazine 29 (1):111-119.
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  18. Space exploration and environmental issues.William Hartmann - 1984 - Environmental Ethics 6 (3):227-239.
    New discoveries about materials and solar energy raise the possibility of a long-tenn shift of mining, refining, and manufacturing from Earth’s surface to locations outside Earth’s ecosphere, allowing Earth to begin to relax back toward its natural state. A little-discussed ambivalence toward the potential of space exploration exists among environmentalists. One camp sees it as a human adventure that may allow a bold initiative to improve Earth; another camp shies away from “heavy technology” and thus distrusts efforts as (...)
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  19. Predicting urban Heat Island in European cities: A comparative study of GRU, DNN, and ANN models using urban morphological variables.Alireza Attarhay Tehrani, Omid Veisi, Kambiz Kia, Yasin Delavar, Sasan Bahrami, Saeideh Sobhaninia & Asma Mehan - 2024 - Urban Climate 56 (102061):1-27.
    Continued urbanization, along with anthropogenic global warming, has and will increase land surface temperature and air temperature anomalies in urban areas when compared to their rural surroundings, leading to Urban Heat Islands (UHI). UHI poses environmental and health risks, affecting both psychological and physiological aspects of human health. Thus, using a deep learning approach that considers morphological variables, this study predicts UHI intensity in 69 European cities from 2007 to 2021 and projects UHI impacts for 2050 and 2080. The research (...)
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  20.  16
    Dynamic Analysis and FPGA Implementation of New Chaotic Neural Network and Optimization of Traveling Salesman Problem.Li Cui, Chaoyang Chen, Jie Jin & Fei Yu - 2021 - Complexity 2021:1-10.
    A neural network is a model of the brain’s cognitive process, with a highly interconnected multiprocessor architecture. The neural network has incredible potential, in the view of these artificial neural networks inherently having good learning capabilities and the ability to learn different input features. Based on this, this paper proposes a new chaotic neuron model and a new chaotic neural network model. It includes a linear matrix, a sine function, and a chaotic neural network composed of three chaotic neurons. (...)
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  21.  33
    The negentropic theory of ontogeny: A new model of eutherian life history transitions?Andres Kurismaa - forthcoming - Biosemiotics:1-27.
    Variations in life history define key comparative and evolutionary biological questions, important for understanding the mechanisms of mammalian evolutionary divergence, developmental adaptability and plasticity. In this regard, the differences among predominantly altricial and precocial species represent a particularly significant, if still poorly understood and contested case. Here, it will be shown how the classical analysis of such ontogenetic variations, going back to the semantic biology of A. Portmann, can be expanded and synthesized with comparative physiological approaches, based on the negentropic (...)
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  22. Advancements in microbial-mediated radioactive waste bioremediation: A review.Chuck Chuan Ng - 2024 - Journal of Environmental Radioactivity 280 (December 2024):107530.
    The global production of radioactive wastes is expected to increase in the coming years as more countries have resorted to adopting nuclear power to decrease their reliance on fossil-fuel-generated energy. Discoveries of remediation methods that can remove radionuclides from radioactive wastes, including those discharged to the environment, are therefore vital to reduce risks-upon-exposure radionuclides posed to humans and wildlife. Among various remediation approaches available, microbe-mediated radionuclide remediation have limited reviews regarding their advances. This review provides an overview of the (...)
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  23.  34
    Romantic and Enlightenment Legacies: Habermas and the Post-Modern Critics.Pauline Johnson - 2006 - Contemporary Political Theory 5 (1):68-90.
    Wisdom, Hegel famously said, only flies at dusk. For many, the evening of the liberal-democratic nation state appears to be descending in a globalizing world. This disturbing prospect invites urgent reflection on which of the potentials of this fading order ought to be carried forward. In this climate of review and reassessment, discussions that had seemed done with re-surface sharpened by fresh purpose. The following paper attempts to put new light on a once vigorous dispute between Habermas and his post-modern (...)
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  24.  26
    Toward a Gibbsian approach to the problems of growth and cancer.Herbert E. Salzer - 1957 - Acta Biotheoretica 12 (3):135-166.
    Certain sections ofJosiah Willard Gibbs's thermodynamics papers might be applicable to biological equilibrium and growth, normal or abnormal.Gibbs added terms⌆ Μ i dm i to the differential of the internal energy dε=tdη−pdΝ, where μi=δεδmi is the potential of substancem i , to provide for chemical as well as thermal and mechanical equilibrium. In this article a further generalization is suggested, to include biological equilibrium by adding to de terms of the form GdN, the variableN being the number of (...)
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  25. The Garage (Take One).Sean Smith - 2013 - Continent 3 (2):70-87.
    This piece, included in the drift special issue of continent. , was created as one step in a thread of inquiry. While each of the contributions to drift stand on their own, the project was an attempt to follow a line of theoretical inquiry as it passed through time and the postal service(s) from October 2012 until May 2013. This issue hosts two threads: between space & place and between intention & attention . The editors recommend that to experience the (...)
     
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  26. Mad Speculation and Absolute Inhumanism: Lovecraft, Ligotti, and the Weirding of Philosophy.Ben Woodard - 2011 - Continent 1 (1):3-13.
    continent. 1.1 : 3-13. / 0/ – Introduction I want to propose, as a trajectory into the philosophically weird, an absurd theoretical claim and pursue it, or perhaps more accurately, construct it as I point to it, collecting the ground work behind me like the Perpetual Train from China Mieville's Iron Council which puts down track as it moves reclaiming it along the way. The strange trajectory is the following: Kant's critical philosophy and much of continental philosophy which has followed, (...)
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  27.  27
    Surface energy anisotropy by an improved thermal grooving technique.M. Mclean & B. Gale - 1969 - Philosophical Magazine 20 (167):1033-1045.
  28.  30
    Impulsive Forces In and Against Words.Alphonso Lingis - 2005 - Diacritics 35 (1):60-70.
    In lieu of an abstract, here is a brief excerpt of the content:Impulsive Forces in and Against WordsAlphonso Lingis (bio)In his lecture "Nietzsche, le polythéisme et la parodie" given at the Collège de Philosophie in 1957 and published in 1963 in his Un si funeste désir, Pierre Klossowski explicated certain radical passages from Nietzsche's The Gay Science, a work he had newly translated into French (two prior translations existed). In the philosophical world of France where perception seemed to have found (...)
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  29.  15
    Energy Investment Potential and Strategic Layout in Countries along the “Belt and Road” Based on Principal Component Analysis.Xiao-Feng Xu, Min Liu, Li Ma & Yang Li - 2021 - Complexity 2021:1-10.
    It is important for energy enterprises to research on the investment potential of the energy markets in countries along the “Belt and Road,” which can help them optimize the regional investment structure, reduce investment risks, and conform to the development trend of “going global.” Therefore, we construct an investment potential assessment system of 29 indexes including five dimensions: politics, economy, society, energy, and cooperation and assess energy investment potential of 48 sample countries along (...)
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  30.  37
    Are Biology and Medicine Only Physics? Building Bridges Between Conventional and Complementary Medicine.Hans-Peter Dürr - 2002 - Bulletin of Science, Technology and Society 22 (5):338-351.
    In classical physics, the world is considered as a matter-based reality, the arrangement of whose parts in time is uniquely determined by certain dynamic laws. By contrast, modern quantum physics reveals that matter is not composed of matter, but reality is merely potentiality. The world has a holistic structure, which is based on fundamental relations and not material objects, admitting more open, indeterministic developments. In this more flexible causal framework, inanimate and animate matter are not to be considered as fundamentally (...)
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  31. In the chaos of today's society: The dynamics of collapse as another shift in the quantum anthropology of Heidi Ann Russell.Radek Trnka - 2015 - Prague: Togga.
    The presented study introduces a new theoretical model of collapse for social, cultural, or political systems. Based on the current form of quantum anthropology conceptualized by Heidi Ann Russell, further development of this field is provided. The new theoretical model is called the spiral model of collapses, and is suggested to provide an analytical framework for collapses in social, cultural, and political systems. The main conclusions of this study are: 1) The individual crises in the period before a collapse of (...)
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  32.  25
    Surface energy of complex – and simple – metallic compounds as derived from friction test in vacuum.J. -M. Dubois, M. -C. de Weerd, J. Brenner, M. Sales, G. Mozdzen, A. Merstallinger & E. Belin-Ferré - 2006 - Philosophical Magazine 86 (6-8):797-805.
  33.  18
    Surface terracing on ferritic stainless-steel fibres and potential relevance toin vitrocell growth.Athina E. Markaki, Kevin M. Knowles, Rachel A. Oliver & Ali Gholinia - 2009 - Philosophical Magazine 89 (26):2285-2303.
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  34.  30
    Low-energy sputtering events at free surfaces near anti-phase and grain boundaries in Ni3Al.F. Gao, D. J. Bacon, W. S. Lai & R. J. Kurtz - 2006 - Philosophical Magazine 86 (27):4243-4258.
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  35.  17
    The surface energy anisotropy of 3% silicon iron.B. Mills, M. Mclean & E. D. Hondros - 1973 - Philosophical Magazine 27 (2):361-368.
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  36.  24
    Surface nanostructural modifications of Ti implanted by N+ions as a function of energy.Masoumeh Firouzi-Arani & Hadi Savaloni - 2011 - Philosophical Magazine 91 (30):3946-3960.
  37.  19
    Anchoring energies and the nucleation of surface disclination lines in nematics.M. Kléman & C. Williams - 1973 - Philosophical Magazine 28 (3):725-732.
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  38.  16
    Fracture surface energies using laser-induced cracks.H. S. Dobbs, J. E. Field & A. H. Maitland - 1973 - Philosophical Magazine 28 (1):33-47.
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  39.  16
    Fracture surface energies from dynamical cleavage analysis.S. J. Burns - 1972 - Philosophical Magazine 25 (1):131-138.
  40.  11
    Surface and grain boundary energies of silver at oxygen pressures lower than 10−15Pa.J. Fiala & J. Ćdek - 1975 - Philosophical Magazine 32 (1):251-255.
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  41.  24
    The cleavage surface energy of zinc.A. H. Maitland & G. A. Chadwick - 1969 - Philosophical Magazine 19 (160):645-651.
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  42. Potentiality and energy..Edward M. O'Connor - 1939 - Washington, D.C.,: The Catholic university of American press.
  43. Energy Efficiency Prediction using Artificial Neural Network.Ahmed J. Khalil, Alaa M. Barhoom, Bassem S. Abu-Nasser, Musleh M. Musleh & Samy S. Abu-Naser - 2019 - International Journal of Academic Pedagogical Research (IJAPR) 3 (9):1-7.
    Buildings energy consumption is growing gradually and put away around 40% of total energy use. Predicting heating and cooling loads of a building in the initial phase of the design to find out optimal solutions amongst different designs is very important, as ell as in the operating phase after the building has been finished for efficient energy. In this study, an artificial neural network model was designed and developed for predicting heating and cooling loads of a building (...)
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  44.  17
    The effect of low energy He+ion injection on the surface structure of ordered Ni-base alloys.D. J. Duquette & R. C. Krutenat - 1971 - Philosophical Magazine 24 (192):1411-1421.
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  45.  30
    Alternative Forms of Energy Production and Political Reconfigurations: Exploring Alternative Energies as Potentialities of Collective Reorganization.Yannick Rumpala - 2017 - Bulletin of Science, Technology and Society 37 (2):85-96.
    To a large extent and one that is highly structuring, energy choices that are made in a society are political choices. This article aims at studying how these choices can be redirected by technological developments associated with renewable energy, thus contributing to a redistribution of opportunities and correspondingly to social reorganizations. In order to show that the development of alternative energies not only depends on technological advances but can also, in the process, reveal political potentialities, three steps are (...)
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  46.  90
    Generalized Dirac Equation with Induced Energy-Dependent Potential via Simple Similarity Transformation and Asymptotic Iteration Methods.T. Barakat & H. A. Alhendi - 2013 - Foundations of Physics 43 (10):1171-1181.
    This study shows how precise simple analytical solutions for the generalized Dirac equation with repulsive vector and attractive energy-dependent Lorentz scalar potentials, position-dependent mass potential, and a tensor interaction term can be obtained within the framework of both similarity transformation and the asymptotic iteration methods. These methods yield a significant improvement over existing approaches and provide more plausible and applicable ways in explaining the pseudospin symmetry’s breaking mechanism in nuclei.
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  47.  18
    On the surface free energy and specific heat of a metal.R. Stratton - 1957 - Philosophical Magazine 2 (17):702-704.
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  48.  24
    Anisotropy of surface free energy of cadmium and magnesium.H. O. K. Kirchner & G. A. Chadwick - 1969 - Philosophical Magazine 20 (164):405-411.
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  49.  49
    Surfaces and lines in terms of the delta and step functions.Yasushi Takahashi - 1993 - Foundations of Physics 23 (5):739-750.
    Surface and line elements in three-dimensional space are given in terms of the delta function. We extend the representation to N-dimensional phase space to obtain the relation between the equi-energy surface and the density of states.
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  50. Attitudes toward nuclear energy: One potential path for achieving scientific literacy.Richard E. Dulski, Rosalie E. Dulski & Ronald J. Raven - 1995 - Science Education 79 (2):167-187.
     
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