Relevant bibliographies by topics / Hard Sphere Systems

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Hard Sphere Systems'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 September 2023

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Journal articles on the topic "Hard Sphere Systems"

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Stoyan, Dietrich. "SURFACES OF HARD-SPHERE SYSTEMS." Image Analysis & Stereology 33, no. 3 (July 25, 2014): 225. http://dx.doi.org/10.5566/ias.1134.

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In various situations surfaces appear that are formed by systems of hard spheres. Examples are porous layers as surfaces of sand heaps and biofilms or fracture surfaces of concrete. The present paper considers models where a statistically homogeneous system of hard spheres with random radii is intersected by a plane and the surface is formed by the spheres with centers close to this plane. Formulae are derived for various characteristics of such surfaces: for the porosity profile, i.e. the local porosity in dependence on the distance from the section plane and for the geometry of the sphere caps that look above the section plane.It turns out that these characteristics only depend on the first-order characteristics of the sphere system, its sphere density and the sphere radius distribution.Comparison with empirically studied biofilms shows that the model is realistic.
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KIM, SOON-CHUL. "SEGREGATION OF FLUIDIZED BINARY HARD-SPHERE SYSTEMS UNDER GRAVITY." International Journal of Modern Physics B 19, no. 04 (February 10, 2005): 763–74. http://dx.doi.org/10.1142/s0217979205027809.

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We have derived an analytic expression for the contact value of the local density of binary hard-sphere systems under gravity. We have obtained the crossover conditions for the Brazil-nut type segregation of binary hard-sphere mixtures and binary hard-sphere chain mixtures from the segregation criterion, where the segregation occurs when the density (or the pressure) of the small spheres at the bottom is higher than that of the large spheres, or vice versa. For the binary hard-sphere chain mixtures, the crossover condition for the segregation depends on the number of monomers composed of hard-sphere chains as well as the mass and the diameter of each species. The fundamental-measure theories (FMTs) and local density approximation (LDA) are employed to examine the crossover condition for the segregation of the gravity-induced hard-sphere mixtures. The calculated results show that the LDA does not explain the density oscillation near the bottom, whereas the modified fundamental-measure theory (MFMT) compares with molecular dynamics simulations.
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Speedy, Robin J. "Pressure of hard-sphere systems." Journal of Physical Chemistry 92, no. 7 (April 1988): 2016–18. http://dx.doi.org/10.1021/j100318a061.

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Fishman, R. S., E. F. Hill, T. K. Storsved, and G. P. Bierwagen. "Density fluctuations in hard-sphere systems." Journal of Applied Physics 79, no. 2 (1996): 729. http://dx.doi.org/10.1063/1.360818.

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Richard, Patrick, Luc Oger, Jean-Paul Troadec, and Annie Gervois. "Geometrical characterization of hard-sphere systems." Physical Review E 60, no. 4 (October 1, 1999): 4551–58. http://dx.doi.org/10.1103/physreve.60.4551.

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Singh, P., and C. Huang. "Particle dynamics in hard-sphere systems." Mechanics Research Communications 27, no. 5 (September 2000): 519–27. http://dx.doi.org/10.1016/s0093-6413(00)00125-7.

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Singh, P., and C. Huang. "Particle dynamics in hard-sphere systems." Mechanics Research Communications 28, no. 2 (March 2001): 231–32. http://dx.doi.org/10.1016/s0093-6413(01)00167-7.

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Müller, Erich A., and Keith E. Gubbins. "Triplet correlation function for hard sphere systems." Molecular Physics 80, no. 1 (September 1993): 91–101. http://dx.doi.org/10.1080/00268979300102081.

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Rintoul, M. D., and S. Torquato. "Metastability and Crystallization in Hard-Sphere Systems." Physical Review Letters 77, no. 20 (November 11, 1996): 4198–201. http://dx.doi.org/10.1103/physrevlett.77.4198.

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Rintoul, M. D., and S. Torquato. "Computer simulations of dense hard‐sphere systems." Journal of Chemical Physics 105, no. 20 (November 22, 1996): 9258–65. http://dx.doi.org/10.1063/1.473004.

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Dissertations / Theses on the topic "Hard Sphere Systems"

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Heni, Martin. "Surface induced effects in hard sphere systems." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=962680818.

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Wild, Robert John. "Theoretical Studies of Crystallisation in Hard Sphere Systems." Thesis, The University of Sydney, 2004. http://hdl.handle.net/2123/646.

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The primary focus of this work is to develop an understanding of crystallisation in hard sphere systems. The thesis is presented in two parts. The first section is an investigation of the liquid/crystal interface at equilibrium using molecular dynamical simulations. The objective is to understand how the interface might bridge between the disordered and ordered states in liquid/crystal environments. Topological measures of structure are used to investigate whether any precursor structures are present in the liquid phase, close to the interface, that would allow transition from disorder to order. This differs from other work where simpler measures of structure, classifying phases into either liquid or crystal, are used. The results indicate that the liquid/crystal interface of a hard sphere system is very narrow and no readily observable structures were found that extended past the width of the equilibrium interface. The second section of the thesis is a theoretical study of growth kinetics in hard sphere systems using density functional theory. The kinetics in a fixed volume are examined with a single conserved order parameter. The work is extended incorporating both conserved particle and non-conserved structure dynamics. The kinetics of growth are examined and it is shown that the small initial crystals are quickly isolated from the higher pressure of the surrounding system through the development of a depletion zone.
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Wild, Robert John. "Theoretical Studies of Crystallisation in Hard Sphere Systems." University of Sydney. Chemistry, 2004. http://hdl.handle.net/2123/646.

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The primary focus of this work is to develop an understanding of crystallisation in hard sphere systems. The thesis is presented in two parts. The first section is an investigation of the liquid/crystal interface at equilibrium using molecular dynamical simulations. The objective is to understand how the interface might bridge between the disordered and ordered states in liquid/crystal environments. Topological measures of structure are used to investigate whether any precursor structures are present in the liquid phase, close to the interface, that would allow transition from disorder to order. This differs from other work where simpler measures of structure, classifying phases into either liquid or crystal, are used. The results indicate that the liquid/crystal interface of a hard sphere system is very narrow and no readily observable structures were found that extended past the width of the equilibrium interface. The second section of the thesis is a theoretical study of growth kinetics in hard sphere systems using density functional theory. The kinetics in a fixed volume are examined with a single conserved order parameter. The work is extended incorporating both conserved particle and non-conserved structure dynamics. The kinetics of growth are examined and it is shown that the small initial crystals are quickly isolated from the higher pressure of the surrounding system through the development of a depletion zone.
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Fairhurst, D. J. "Colloidal size polydispersity in hard-sphere and depletion systems." Thesis, University of Edinburgh, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.650453.

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I have studied the effects of polydispersity on the phase behaviour of suspensions of PMMA colloidal spheres on their own and in the presence of non-adsorbed polymer. Fractionation studies on coexisting phases enabled verification of a recent universal law of fractionation in slightly polydisperse systems.
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Voisey, Jeremy Paul. "Cell theory of binary and polydisperse hard sphere systems." Thesis, University of Bath, 2001. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760779.

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Watanabe, Hiroshi, Satoshi Yukawa, M. A. Novotny, and Nobuyasu Ito. "Efficiency of rejection-free dynamic Monte Carlo methods for homogeneous spin models, hard disk systems, and hard sphere systems." The American Physical Society, 2006. http://hdl.handle.net/2237/7148.

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Mandal, Suvendu Verfasser], Dierk [Akademischer Betreuer] [Raabe, Fathollah Akademischer Betreuer] Varnik, and Robert [Akademischer Betreuer] [Svendsen. "Dynamic correlations and confinement effects in glass forming hard sphere systems / Suvendu Mandal ; Dierk Raabe, Fathollah Varnik, Bob Svendsen." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1128231638/34.

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Srinivasan, Vivek. "CFD – DEM Modeling and Parallel Implementation of Three Dimensional Non- Spherical Particulate Systems." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/91889.

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Particulate systems in practical applications such as biomass combustion, blood cellular systems and granular particles in fluidized beds, have often been computationally represented using spherical surfaces, even though the majority of particles in archetypal fluid-solid systems are non-spherical. While spherical particles are more cost-effective to simulate, notable deficiencies of these implementations are their substantial inaccuracies in predicting the dynamics of particle mixtures. Alternatively, modeling dense fluid-particulate systems using non-spherical particles involves increased complexity, with computational cost manifesting as the biggest bottleneck. However, with recent advancements in computer hardware, simulations of three-dimensional particulate systems using irregular shaped particles have garnered significant interest. In this research, a novel Discrete Element Method (DEM) model that incorporates geometry definition, collision detection, and post-collision kinematics has been developed to accurately simulate non-spherical particulate systems. Superellipsoids, which account for 80% of particles commonly found in nature, are used to represent non-spherical shapes. Collisions between these particles are processed using a distance function computation carried out with respect to their surfaces. An event - driven model and a time-driven model have been employed in the current framework to resolve collisions. The collision model's influence on non–spherical particle dynamics is verified by observing the conservation of momentum and total kinetic energy. Furthermore, the non-spherical DEM model is coupled with an in-house fluid flow solver (GenIDLEST). The combined CFD-DEM model's results are validated by comparing to experimental measurements in a fluidized bed. The parallel scalability of the non-spherical DEM model is evaluated in terms of its efficiency and speedup. Major factors affecting wall clock time of simulations are analyzed and an estimate of the model's dependency on these factors is documented. The developed framework allows for a wide range of particle geometries to be simulated in GenIDLEST.
Master of Science
CFD – DEM (Discrete Element Method) is a technique of coupling fluid flow solvers with granular solid particles. CFD – DEM simulations are beneficial in recreating pragmatic applications such as blood cellular flows, fluidized beds and pharmaceutics. Up until recently, particles in these flows have been modeled as spheres as the generation of particle geometry and collision detection algorithms are straightforward. However, in real – life occurrences, most particles are irregular in shape, and approximating them as spheres in computational works leads to a substantial loss of accuracy. On the other hand, non – spherical particles are more complex to generate. When these particles are in motion, they collide and exhibit complex trajectories. Majority of the wall clock time is spent in resolving collisions between these non – spherical particles. Hence, generic algorithms to detect and resolve collisions have to be incorporated. This primary focus of this research work is to develop collision detection and resolution algorithms for non – spherical particles. Collisions are detected using inherent geometrical properties of the class of particles used. Two popular models (event-driven and time-driven) are implemented and utilized to update the trajectories of particles. These models are coupled with an in – house fluid solver (GenIDLEST) and the functioning of the DEM model is validated with experimental results from previous research works. Also, since the computational effort required is higher in the case of non – spherical particulate simulations, an estimate of the scalability of the problem and factors influencing time to simulations are presented.
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Kapfunde, Goodwell. "Near-capacity sphere decoder based detection schemes for MIMO wireless communication systems." Thesis, University of Hertfordshire, 2013. http://hdl.handle.net/2299/11350.

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The search for the closest lattice point arises in many communication problems, and is known to be NP-hard. The Maximum Likelihood (ML) Detector is the optimal detector which yields an optimal solution to this problem, but at the expense of high computational complexity. Existing near-optimal methods used to solve the problem are based on the Sphere Decoder (SD), which searches for lattice points confined in a hyper-sphere around the received point. The SD has emerged as a powerful means of finding the solution to the ML detection problem for MIMO systems. However the bottleneck lies in the determination of the initial radius. This thesis is concerned with the detection of transmitted wireless signals in Multiple-Input Multiple-Output (MIMO) digital communication systems as efficiently and effectively as possible. The main objective of this thesis is to design efficient ML detection algorithms for MIMO systems based on the depth-first search (DFS) algorithms whilst taking into account complexity and bit error rate performance requirements for advanced digital communication systems. The increased capacity and improved link reliability of MIMO systems without sacrificing bandwidth efficiency and transmit power will serve as the key motivation behind the study of MIMO detection schemes. The fundamental principles behind MIMO systems are explored in Chapter 2. A generic framework for linear and non-linear tree search based detection schemes is then presented Chapter 3. This paves way for different methods of improving the achievable performance-complexity trade-off for all SD-based detection algorithms. The suboptimal detection schemes, in particular the Minimum Mean Squared Error-Successive Interference Cancellation (MMSE-SIC), will also serve as pre-processing as well as comparison techniques whilst channel capacity approaching Low Density Parity Check (LDPC) codes will be employed to evaluate the performance of the proposed SD. Numerical and simulation results show that non-linear detection schemes yield better performance compared to linear detection schemes, however, at the expense of a slight increase in complexity. The first contribution in this thesis is the design of a near ML-achieving SD algorithm for MIMO digital communication systems that reduces the number of search operations within the sphere-constrained search space at reduced detection complexity in Chapter 4. In this design, the distance between the ML estimate and the received signal is used to control the lower and upper bound radii of the proposed SD to prevent NP-complete problems. The detection method is based on the DFS algorithm and the Successive Interference Cancellation (SIC). The SIC ensures that the effects of dominant signals are effectively removed. Simulation results presented in this thesis show that by employing pre-processing detection schemes, the complexity of the proposed SD can be significantly reduced, though at marginal performance penalty. The second contribution is the determination of the initial sphere radius in Chapter 5. The new initial radius proposed in this thesis is based on the variable parameter α which is commonly based on experience and is chosen to ensure that at least a lattice point exists inside the sphere with high probability. Using the variable parameter α, a new noise covariance matrix which incorporates the number of transmit antennas, the energy of the transmitted symbols and the channel matrix is defined. The new covariance matrix is then incorporated into the EMMSE model to generate an improved EMMSE estimate. The EMMSE radius is finally found by computing the distance between the sphere centre and the improved EMMSE estimate. This distance can be fine-tuned by varying the variable parameter α. The beauty of the proposed method is that it reduces the complexity of the preprocessing step of the EMMSE to that of the Zero-Forcing (ZF) detector without significant performance degradation of the SD, particularly at low Signal-to-Noise Ratios (SNR). More specifically, it will be shown through simulation results that using the EMMSE preprocessing step will substantially improve performance whenever the complexity of the tree search is fixed or upper bounded. The final contribution is the design of the LRAD-MMSE-SIC based SD detection scheme which introduces a trade-off between performance and increased computational complexity in Chapter 6. The Lenstra-Lenstra-Lovasz (LLL) algorithm will be utilised to orthogonalise the channel matrix H to a new near orthogonal channel matrix H ̅.The increased computational complexity introduced by the LLL algorithm will be significantly decreased by employing sorted QR decomposition of the transformed channel H ̅ into a unitary matrix and an upper triangular matrix which retains the property of the channel matrix. The SIC algorithm will ensure that the interference due to dominant signals will be minimised while the LDPC will effectively stop the propagation of errors within the entire system. Through simulations, it will be demonstrated that the proposed detector still approaches the ML performance while requiring much lower complexity compared to the conventional SD.
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Elghannay, Husam A. "Methods Development and Validation for Large Scale Simulations of Dense Particulate Flow systems in CFD-DEM Framework." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/94133.

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Computational Fluid Dynamics Coupled to Discrete Element Method (CFD-DEM) is widely used in simulating a large variety of particulate flow system. This Eulerian-Lagrangian technique tracks all the particles included in the system by the application of point mass models in their equation of motion. CFD-DEM is a more accurate (and more expensive) technique compared to an Eulerian-Eulerian representation. Compared to Particle Resolved Simulations (PRS), CFD-DEM is less expensive since it does not require resolving the flow around each particles and thus can be applied to larger scale systems. Nevertheless, simulating industrial and natural scale systems is a challenge for this numerical technique. This is because the cost of CFD-DEM is proportional to the number of particles in the system under consideration. Thus, massively parallel codes are used to tackle these problems with the help of supercomputers. In this thesis, the CFD-DEM capability in the in-house code Generalized Incompressible Direct and Large Eddy Simulation of Turbulence (GenIDLEST) is used to investigate large scale dense particulate flow systems. Central to the contributions made by this work are developments to reduce the computational cost of CFD-DEM. This includes the development and validation of reduced order history force model for use in large scale systems and validation of the representative particle model, which lumps multiple particles into one, thus reducing the number of particles that need to be tracked in the system. Numerical difficulties in the form of long integration times and instabilities encountered in fully coupling the fluid and particle phases in highly energetic systems are alleviated by proposing a partial coupling scheme which maintains the accuracy of full-coupling to a large extent but at a reduced computational cost. The proposed partial-coupling is found to have a better convergence behavior compared to the full coupling in large systems and can be used in cases where full coupling is not feasible or impractical to use. Alternative modeling approaches for the tangential treatment of the soft-sphere impact model to avoid storing individual impact deformation are proposed and tested. A time advancement technique is developed and proposed for use in dense particulate systems with a hard-sphere impact model. The new advancement technique allows for the use of larger time steps which can speed-up the time to solution by as much as an order of magnitude.
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Books on the topic "Hard Sphere Systems"

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A, Mulero, ed. Theory and simulation of hard-sphere fluids and related systems. Berlin: Springer, 2008.

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Mulero, Ángel, ed. Theory and Simulation of Hard-Sphere Fluids and Related Systems. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-78767-9.

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Mulero, Angel. Theory and Simulation of Hard-Sphere Fluids and Related Systems. Springer Berlin / Heidelberg, 2010.

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Roychowdhury, Poulami. Capable Women, Incapable States. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190881894.001.0001.

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How do women claim rights against violence in India and with what consequences? By observing how women navigate the Indian criminal justice system, Roychowdhury provides a unique lens on rights negotiations in the world’s largest democracy. She finds that women interact with the law not by following legal procedure or abiding by the rules but by deploying collective threats and doing the work of the state themselves. They do so because law enforcement personnel are incapacitated and unwilling to enforce the law. As a result, rights negotiations do not necessarily lead to more woman-friendly outcomes or better legal enforcement. Instead, they allow some women to make gains outside the law: repossess property and children, negotiate cash settlements, join women’s groups, access paid employment, develop a sense of self-assurance, and become members of the public sphere. Capable Women, Incapable States shows how the Indian criminal justice system governs violence against women not by protecting them from harm but by forcing them to become “capable”: to take the law into their own hands and complete the hard work that incapable and unwilling state officials refuse to complete. Roychowdhury’s book houses implications for how we understand gender inequality and governance not just in India but in large parts of the world where political mobilization for rights confronts negligent and incapacitated criminal justice systems.
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Barney, Richard A., and Warren Montag, eds. Systems of Life. Fordham University Press, 2018. http://dx.doi.org/10.5422/fordham/9780823281725.001.0001.

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Systems of Life offers a wide-ranging revaluation of the emergence of biopolitics in Europe from the mid– eighteenth to the mid–nineteenth century. In staging an encounter among literature, political economy, and the still emergent sciences of life in that historical moment, the essays collected here reopen the question of how concepts of animal, vegetable, and human life, among other biological registers, had an impact on the Enlightenment project of thinking politics and economics as a joint enterprise. The volume’s contributors consider politics, economics, and the biological as distinct, semi-autonomous spheres whose various combinations required inventive, sometimes incomplete, acts of conceptual mediation, philosophical negotiation, disciplinary intervention, or aesthetic representation.
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Hardy, Jeffrey S. Khrushchev’s Reforms and the Late (And Post-)Soviet Gulag. Cornell University Press, 2017. http://dx.doi.org/10.7591/cornell/9781501702792.003.0007.

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This chapter assesses Khrushchev's reforms in the penal sphere. The reforms of the Khrushchev period had an important lasting effect on the Soviet penal system. This certainly holds true in terms of the Gulag's permanent reduction in size, but it also applies to the reorientation of Gulag aims and the resultant improved conditions experienced by its inmates. Although certain inmate privileges were reduced or eliminated in the early 1960s at the culmination of the “camp is not a resort” campaign, many of the most important prisoner-friendly reforms of the 1950s, such as parole and the eight-hour workday, remained. Despite certain continuities, therefore, the Gulag did not return to a state of unchecked (and even abetted) violence, grueling labor, and oppressive living conditions—the defining features of the Stalinist penal system. De-Stalinization in the penal sphere was a real and enduring legacy of the Khrushchev era.
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McElroy, Michael B. Energy and Climate. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190490331.001.0001.

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The climate of our planet is changing at a rate unprecedented in recent human history. The energy absorbed from the sun exceeds what is returned to space. The planet as a whole is gaining energy. The heat content of the ocean is increasing; the surface and atmosphere are warming; mid-latitude glaciers are melting; sea level is rising. The Arctic Ocean is losing its ice cover. None of these assertions are based on theory but on hard scientific fact. Given the science-heavy nature of climate change, debates and discussions have not played as big a role in the public sphere as they should, and instead are relegated to often misinformed political discussions and inaccessible scientific conferences. Michael B. McElroy, an eminent Harvard scholar of environmental studies, combines both his research chops and pedagogical expertise to present a book that will appeal to the lay reader but still be grounded in scientific fact. In Energy and Climate: Vision for the Future, McElroy provides a broad and comprehensive introduction to the issue of energy and climate change intended to be accessible for the general reader. The book includes chapters on energy basics, a discussion of the contemporary energy systems of the US and China, and two chapters that engage the debate regarding climate change. The perspective is global but with a specific focus on the US and China recognizing the critical role these countries must play in addressing the challenge of global climate change. The book concludes with a discussion of initiatives now underway to at least reduce the rate of increase of greenhouse gas emissions, together with a vision for a low carbon energy future that could in principle minimize the long-term impact of energy systems on global climate.
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Lacey, Joseph. Switzerland Versus the Lingua Franca Thesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198796886.003.0009.

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The goal of this chapter is to understand how Switzerland has managed to turn a linguistic make-up that is centrifugally explosive in theory into one that is relatively benign in practice. On the one hand, it is argued that numerous historical particularities and political decisions have served to curtail the centrifugal forces that are presumed to be typical of political systems constituted by linguistically demarcated public spheres. On the other hand, Switzerland serves to corroborate a core hypothesis of this project, namely that the institutionalization of democratic legitimacy will produce powerful centripetal effects on the political community. In sum, a host of factors help to explain why Switzerland does not fall apart, but it is its quality of democracy that is largely responsible for keeping it together.
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Roberts, Richard. Law, Crime, and Punishment in Colonial Africa. Edited by John Parker and Richard Reid. Oxford University Press, 2013. http://dx.doi.org/10.1093/oxfordhb/9780199572472.013.0009.

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Law lay at the heart of the colonial encounter. This chapter examines the ‘deep effects’ that the colonial encounter had on law in Africa and how the very ‘litigiousness’ of Africans reflects both social change and African agency. Colonial officials used law to promote both legibility and stability of African societies. In practice, however, colonial legal systems promoted conflict by imposing rules and expectations that were not widely shared or deeply embedded in African discourses of political and social authority. The chapter explores how colonial legal pluralism led to the establishment of new formal legal institutions and how litigants used the multiple arenas created by overlapping systems of dispute settlement. Even though it was designed to respect ‘custom’, the colonial legal sphere involved the seepage of metropolitan concepts and procedures into native law and practice and often led to changes in the legal character and capacity of individuals. This enabled women, younger adults, and low-status individuals to confront men and higher status individuals even in courts designed to uphold custom.
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Viellechner, Lars, ed. Verfassung ohne Staat. Nomos Verlagsgesellschaft mbH & Co. KG, 2019. http://dx.doi.org/10.5771/9783845283098.

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On the basis of systems theory, Gunther Teubner has developed a sociologically informed theory of law and constitutionalism that does not rest on the sovereign state, but on the functionally differentiated society. From this point of view, law and constitutionalism can also emerge without a state: in transnational political processes on the one hand and in the ‘private’ spheres of world society on the other. The search for unity and hierarchy in the law may be futile under these circumstances. As Teubner suggests, however, collisions between the various constitutional fragments may be addressed by a new kind of conflicts law that follows the model of private international law. With contributions by Ino Augsberg, Anna Beckers, Gralf-Peter Calliess, Pasquale Femia, Karl-Heinz Ladeur, Andreas Maurer, Riccardo Prandini, Ralf Seinecke, Thomas Vesting, Lars Viellechner
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Book chapters on the topic "Hard Sphere Systems"

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Baus, M. "The Freezing of Charged and Uncharged Hard-Sphere Systems." In Strongly Coupled Plasma Physics, 305–13. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1891-0_29.

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Caillol, J. M., D. Levesque, and J. J. Weis. "A Monte Carlo Finite Size Scaling Study of Charged Hard Sphere Criticality." In Strongly Coupled Coulomb Systems, 713–16. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47086-1_135.

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López de Haro, M., S. B. Yuste, and A. Santos. "Alternative Approaches to the Equilibrium Properties of Hard-Sphere Liquids." In Theory and Simulation of Hard-Sphere Fluids and Related Systems, 183–245. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-78767-9_6.

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Verberg, R., I. M. Schepper, and E. G. D. Cohen. "Viscosity and Diffusion of Concentrated Hard-Sphere-Like Colloidal Suspensions." In Dynamics: Models and Kinetic Methods for Non-equilibrium Many Body Systems, 39–64. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4365-3_4.

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Tanemura, Masaharu. "On the Stereology of the Radial Distribution Function of Hard-sphere Systems." In Science on Form, 157–65. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-3757-4_21.

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Studer, Christoph, Markus Wenk, and Andreas Burg. "VLSI Implementation of Hard- and Soft-Output Sphere Decoding for Wide-Band MIMO Systems." In VLSI-SoC: Forward-Looking Trends in IC and Systems Design, 128–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28566-0_6.

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Murphy, T. J., and E. G. D. Cohen. "On the Sequences of Collisions Among Hard Spheres in Infinite Space." In Hard Ball Systems and the Lorentz Gas, 29–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04062-1_3.

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Ernst, M. H. "Kinetic Theory of Granular Fluids: Hard and Soft Inelastic Spheres." In Dynamics: Models and Kinetic Methods for Non-equilibrium Many Body Systems, 239–66. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4365-3_14.

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Saffirio, Chiara. "Derivation of the Boltzmann Equation: Hard Spheres, Short-Range Potentials and Beyond." In From Particle Systems to Partial Differential Equations III, 301–21. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32144-8_15.

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Laird, Brian B. "Do Your Hard-Spheres Have Tails? A Molecular Dynamics Integration Algorithm for Systems with Mixed Hard-Core/Continuous Potentials." In Computational Science - ICCS 2001, 1068. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45718-6_118.

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Conference papers on the topic "Hard Sphere Systems"

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Richard, Patrick, Annie Gervois, Luc Oger, and Jean-Paul Troadec. "Crystallization in hard sphere systems: A structural analysis." In PHYSICS OF GLASSES. ASCE, 1999. http://dx.doi.org/10.1063/1.1301469.

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Götze, W., and M. R. Mayr. "The dynamics of a hard sphere moving in a hard-sphere system near the liquid-glass transition point." In The 8th tohwa university international symposium on slow dynamics in complex systems. AIP, 1999. http://dx.doi.org/10.1063/1.58524.

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Klumov, B. A., S. A. Khrapak, G. E. Morfill, Vladimir Yu Nosenko, Padma K. Shukla, Markus H. Thoma, and Hubertus M. Thomas. "Structural properties of dense hard sphere systems near random close packing." In DUSTY∕COMPLEX PLASMAS: BASIC AND INTERDISCIPLINARY RESEARCH: Sixth International Conference on the Physics of Dusty Plasmas. AIP, 2011. http://dx.doi.org/10.1063/1.3659883.

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Kim, Kang. "Glass transition of hard sphere systems-Molecular dynamics and density functional approaches." In SLOW DYNAMICS IN COMPLEX SYSTEMS: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP, 2004. http://dx.doi.org/10.1063/1.1764272.

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Tokuyama, M. "Universal Features of Collective Interactions in Hard-Sphere Systems at Higher Volume Fractions." In SLOW DYNAMICS IN COMPLEX SYSTEMS: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP, 2004. http://dx.doi.org/10.1063/1.1764053.

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Tokuyama, M., Y. Enomoto, and I. Oppenheim. "Slow dynamics of concentrated hard-sphere suspensions: Spatial heterogeneities and density fluctuations." In The 8th tohwa university international symposium on slow dynamics in complex systems. AIP, 1999. http://dx.doi.org/10.1063/1.58492.

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Härtl, W., Ch Beck, and R. Hempelmann. "Hydrodynamic interactions of colloidal systems with a hard-sphere and Yukawa interaction potential." In The 8th tohwa university international symposium on slow dynamics in complex systems. AIP, 1999. http://dx.doi.org/10.1063/1.58526.

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Shimura, Tsutomu. "Computer Simulations of Two Kinds of Polydisperse Hard-Sphere Systems; Atomic Systems and Colloidal Suspensions." In SLOW DYNAMICS IN COMPLEX SYSTEMS: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP, 2004. http://dx.doi.org/10.1063/1.1764106.

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Megías, Alberto, and Andrés Santos. "Energy production rates of multicomponent granular gases of rough particles. A unified view of hard-disk and hard-sphere systems." In 31ST INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD31. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5119584.

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Mandal, Suvendu, Markus Gross, Dierk Raabe, and Fathollah Varnik. "Flow heterogeneity and correlations in a sheared hard sphere glass: Insight from computer simulations." In 4TH INTERNATIONAL SYMPOSIUM ON SLOW DYNAMICS IN COMPLEX SYSTEMS: Keep Going Tohoku. American Institute of Physics, 2013. http://dx.doi.org/10.1063/1.4794578.

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Reports on the topic "Hard Sphere Systems"

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Vasyliuk, Tamara, Ilia Lysokon, and Ivanna Razmolodchykova. Professional training of specialists for children`s services=Професійна підготовка спеціалістів служб у справах дітей. Publisher “GS Publishing Services”, 2023. http://dx.doi.org/10.31812/123456789/7047.

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Today, social work professions are recognized all over the world, and Ukraine is no exception. On the one hand, the process of recognizing the need for specialists capable of providing various social and social and pedagogical services in various spheres of life has begun not so long ago, and on the other hand, it is the positive trend and active organizational transformations of the educational and social sectors of public administration that lead to the modernization of the system.
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Marchini, Geneviève Marthe Marie. Working paper PUEAA No. 16. The US exit from Afghanistan. Reverberation across Latin America. Universidad Nacional Autónoma de México, Programa Universitario de Estudios sobre Asia y África, 2023. http://dx.doi.org/10.22201/pueaa.001r.2023.

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In this paper, I aim to analyze which direct or indirect implications the US withdrawal from Afghanistan had for Latin America, especially in the economic sphere, an aspect less addressed. My point is that there were few direct economic effects, due to the lack of relevance of trade and investment links between Afghanistan and Latin American countries, but the consequences of the US exit reverberated through the global system and through its real and potential effects on topics of common interest. As peripheral and semi-peripheral countries, and despite the absence of international wars in the region, several Latin American countries share with Afghanistan aspects of an insertion in the global economy which includes illicit activities or activities at the margins of legality, like the production, transit and exports of drugs, or the privatization of war, or are affected by the struggles between the great powers, especially the United States and China. The paper is organized as follows: in a first section we briefly introduce the Afghan economy and show the weak links it maintains with Latin America. The second section discusses some immediate reactions to the US withdrawal in Latin America and examines one of its direct effects, related to the participation of Colombian military personnel and former soldiers in Afghanistan. The third section deals with the reverberations of the US exit on the “war on drugs,”, which involves several Latin American countries as well as Afghanistan, and the fourth section approaches the possible impacts on the international infrastructure initiatives in both regions. The last section concludes.
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Arora, Sanjana, and Olena Koval. Norway Country Report. University of Stavanger, 2022. http://dx.doi.org/10.31265/usps.232.

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This report is part of a larger cross-country comparative project and constitutes an account and analysis of the measures comprising the Norwegian national response to the COVID-19 pandemic during the year of 2020. This time period is interesting in that mitigation efforts were predominantly of a non-medical nature. Mass vaccinations were in Norway conducted in early 2021. With one of the lowest mortality rates in Europe and relatively lower economic repercussions compared to its Nordic neighbours, the Norwegian case stands unique (OECD, 2021: Eurostat 2021; Statista, 2022). This report presents a summary of Norwegian response to the COVID-19 pandemic by taking into account its governance, political administration and societal context. In doing so, it highlights the key features of the Nordic governance model and the mitigation measures that attributed to its success, as well as some facets of Norway’s under-preparedness. Norway’s relative isolation in Northern Europe coupled with low population density gave it a geographical advantage in ensuring a slower spread of the virus. However, the spread of infection was also uneven, which meant that infection rates were concentrated more in some areas than in others. On the fiscal front, the affluence of Norway is linked to its petroleum industry and the related Norwegian Sovereign Wealth Fund. Both were affected by the pandemic, reflected through a reduction in the country’s annual GDP (SSB, 2022). The Nordic model of extensive welfare services, economic measures, a strong healthcare system with goals of equity and a high trust society, indeed ensured a strong shield against the impact of the COVID-19 pandemic. Yet, the consequences of the pandemic were uneven with unemployment especially high among those with low education and/or in low-income professions, as well as among immigrants (NOU, 2022:5). The social and psychological effects were also uneven, with children and elderly being left particularly vulnerable (Christensen, 2021). Further, the pandemic also at times led to unprecedented pressure on some intensive care units (OECD, 2021). Central to handling the COVID-19 pandemic in Norway were the three national executive authorities: the Ministry of Health and Care services, the National directorate of health and the Norwegian Institute of Public Health. With regard to political-administrative functions, the principle of subsidiarity (decentralisation) and responsibility meant that local governments had a high degree of autonomy in implementing infection control measures. Risk communication was thus also relatively decentralised, depending on the local outbreak situations. While decentralisation likely gave flexibility, ability to improvise in a crisis and utilise the municipalities’ knowledge of local contexts, it also brought forward challenges of coordination between the national and municipal level. Lack of training, infection control and protection equipment thereby prevailed in several municipalities. Although in effect for limited periods of time, the Corona Act, which allowed for fairly severe restrictions, received mixed responses in the public sphere. Critical perceptions towards the Corona Act were not seen as a surprise, considering that Norwegian society has traditionally relied on its ‘dugnadskultur’ – a culture of voluntary contributions in the spirit of solidarity. Government representatives at the frontline of communication were also open about the degree of uncertainty coupled with considerable potential for great societal damage. Overall, the mitigation policy in Norway was successful in keeping the overall infection rates and mortality low, albeit with a few societal and political-administrative challenges. The case of Norway is thus indeed exemplary with regard to its effective mitigation measures and strong government support to mitigate the impact of those measures. However, it also goes to show how a country with good crisis preparedness systems, governance and a comprehensive welfare system was also left somewhat underprepared by the devastating consequences of the pandemic.
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