7,262 research outputs found
Anion polarizability in solution: does it depend on the environment?
No full textIt is widely accepted that the inclusion of polarization effects in force field Molecular Dynamics (MD) simulations is of high importance for studying both homogeneous and inhomogeneous systems, and that a proper description of polarizable interactions represents the next milestone in force field development [1]. In recent years we have studied a simple system, chloride in water, to face the problem of describing electrostatic interactions at short range [2-4]. We have found that both at gas and at condensed phase, the best results for static and dynamical properties are obtained if damping functions are used together with gas phase polarizability for the anion [2,5,6]. This result is certainly surprising if one considers that all simulations at condesed phase account for a reduced polarizability of the anion. In our recent review we have compared classical MD with ab initio results, confirming that our approach is correct. Here we pose a subtle question about the physical interpretation of the above result, address- ing it with ab initio MD of chloride in water. The conclusions, of general validity for small ions in water solution, constitute a theoretical framework for future developments in the field [7-9].
[1] A. J. Stone, Science 321, 787 (2008). [2] M. Masia, M. Probst, R. Rey, Chem. Phys. Lett. 420, 267 (2006). [3] M. Masia, J. Chem. Phys. 128, 184107 (2008). [4] E. Guardia, I. Skarmoutsos, M. Masia, J. Chem. Theory. and Comput. 5, 1449 (2009). [5] J. Sala, E. Guardia, M. Masia, J. Chem. Phys. 133, 234101 (2010). [6] E. Guardia, A. -M. Calvo, M. Masia, Theor. Chem. Acc. submitted [7] R. J. Heaton, P. A. Madden, S. J. Clark, S. Jahn, J. Chem. Phys. 125, 144104 (2006). [8] A. Buin, R. Iftimie, J. Chem. Phys. 131, 234507 (2009). [9] J. J. Molina, S. Lectez, S. Tazi, M. Salanne, J. -F. Dufreche, J. Roques, E. Simoni, P. A. Madden, P. Turq, J. Chem. Phys. 134, 014511 (2011)
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
Drumheller, AB
No full textNotes - A history of the Ursaline order in Drumheller, AB from 1935 to 1985 (2 pages)Drumhelle
[Proyecto de una casa de alquiler en un pueblo de 1500 vecinos. Detalles]
No full textTítol atribuït pel catalogador1 plànol de la secció i de detalls d’un projecte de casa de lloguer en un poble de 1500 veïns. Forma part d'un conjunt que consta d’1 full amb l'enunciat de l'exercici, 5 plànols i 1 pressupost corresponent al projecte final de Juan Guardia Granell a l’Escola de Mestres d’Obres de Barcelona. -- A la part inferior dreta, la data: "Barcelona 9 Enero de 1861" i la signatura de l'autor. -- Títols dels dibuixos: "Detall de la cornisa", "Sección por la línea AB", "Detall de la puerta de entrada y balcón", "Detall de un marco de alcoba"
[Proyecto de una casa de alquiler en un pueblo de 1500 vecinos. Detalles]
No full textTítol atribuït pel catalogador1 plànol de la secció i de detalls d’un projecte de casa de lloguer en un poble de 1500 veïns. Forma part d'un conjunt que consta d’1 full amb l'enunciat de l'exercici, 5 plànols i 1 pressupost corresponent al projecte final de Juan Guardia Granell a l’Escola de Mestres d’Obres de Barcelona. -- A la part inferior dreta, la data: "Barcelona 9 Enero de 1861" i la signatura de l'autor. -- Títols dels dibuixos: "Detall de la cornisa", "Sección por la línea AB", "Detall de la puerta de entrada y balcón", "Detall de un marco de alcoba"
Souvenir of Edmonton, AB
No full textBooklet - Souvenir of Edmonton - The Capital City of Alberta. Collection of photographs in a green cover tied with string, Edmonton, AB (48 pages
Ab initio pair potentials at metal-ceramic interfaces
No full textA systematic approach is proposed to obtain the interfacial interatomic potentials. By inverting ab initio adhesive energy curves for the metal-MgO ceramic interfaces, We derive interfacial potentials between Ag and O2-, Ag and Mg2+, Al and O2-, Al and Mg2+. The interfacial potentials, obtained from this method, demonstrate general features of bondings between metal atoms and ceramic ions
Perceptions of pre- and post-event impacts of PEI 2014 year-long celebrations
No full textThis study examines Canadian perceptions of pre- and post-event impacts of the PEI 2014 Celebrations using the 2013 and 2015 surveys of PEI residents and other Canadians conducted by the Centre for Tourism Research. Overall, results indicate that Canadians’ awareness of, knowledge about, and attitudes toward the 1864 Charlottetown Conference and the PEI 2014 Celebrations increased and positively changed over time. The research also suggests that event organizers and/or destination tourism managers need to put greater emphasis on the “socio-cultural aspects” of the event such as community participation and cultural identity, and make an effort to increase tourism volume and value in order to obtain strong support from residents and be successful
Ultra-low-power, class-AB, CMOS four-quadrant current multiplier
No full textA class-AB four-quadrant current multiplier constituted by a class-AB current amplifier and a current splitter which can handle input signals in excess of ten times the bias current is presented. The proposed circuit operation is based on the exponential characteristic of BJTs or subthreshold MOSFETs. The multiplier is designed using the latter devices and achieves very low power consumption. Simulation results show that from a 0.65 V supply, the proposed circuit consumes 12.4 nW static power while less than 30 dB total harmonic distortion is achieved for an input modulation index up to 10.Microelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Records of Empire, Monarchy, or Nation? The Archival Heritage of the Habsburgs in East Central Europe
No full textThis contribution to Ab Imperio's forum on the archives of empires examines the history of central government archives in the Habsburg Monarchy of East Central Europe from the sixteenth through twentieth centuries. The court, financial, and military archives in the imperial capital at first only served official purposes, but by the nineteenth century also supported historical research. Later the provinces and emerging national states also developed archives and made them accessible to historians. The multinational empire dissolved in 1918 and its successor states competed for possession of the central archives. National archives were considered essential for the creation of national states and histories
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