6,208 research outputs found
The Alaska experience
The management responsibilities of the Alaska Department of Natural Resources are summarized and the establishment of a geoprocessor system is described. Specific capabilities were defined based on surveys of potential users and pre-existing systems. The procurement process, the initially purchased equipment, and system upgrading are described. Cost, installation and maintenance, site location, training, and staffing of the system are examined
Propositionalisation of multiple sequence alignments using probabilistic models
Multiple sequence alignments play a central role in Bioinformatics. Most alignment representations are designed to facilitate knowledge extraction by human experts. Additionally statistical models like Profile Hidden Markov Models are used as representations. They offer the advantage to provide sound, probabilistic scores. The basic idea we present in this paper is to use the structure of a Profile Hidden Markov Model for propositionalisation. This way we get a simple, extendable representation of multiple sequence alignments which facilitates further analysis by Machine Learning algorighms
A regional land use survey based on remote sensing and other data: A report on a LANDSAT and computer mapping project, volume 1
The author has identified the following significant results. New LANDSAT analysis software and linkages with other computer mapping software were developed. Significant results were also achieved in training, communication, and identification of needs for developing the LANDSAT/computer mapping technologies into operational tools for use by decision makers
Doing the North-South splits: Post-modern Strain on a Pre-modern Institution
'The controversy in the Anglican Church around homosexuality within the priesthood is considered in terms of the kind of world-view held by an important faction of those in opposition. An example of research into the world-view of Charismatic Christians running an Anglican outreach project in the UK is taken to gain insight into the world-wide Evangelical Charismatic resurgence. Parallels are drawn with the position taken by the Southern hemisphere Anglicans and it is argued that this opposition is unlikely to be yielding to the secularising influences of pluralistic industrialised societies. Robertson (1985) proposes that religious forms in differentiated societies, such as Charismatic Evangelicalism, draw strength from global integration. It is argued that this thesis is relevant to understanding the nature of divisions within Anglicanism as these world-wide factions cut across and divide a broad church. That the world contains varying conditions of secularisation and counter-secularisation (Berger, 1999) places additional and intolerable strain on a world-wide communion that tries to embrace a plurality.'Charismatic Evangelicalism; Church Of England; Counter-secularisation; Globalisation; Secularisation.
Computational Analysis of Composition-Structure-Property-Relationships in NZP-type Materials for Li-Ion Batteries
Compounds crystallizing in the structure of NaZr(PO) (NZP) are
considered as promising materials for solid state electrolytes in Li-ion
batteries. Using density functional theory (DFT), a systematic computational
screening of 18 NZP compounds, namely LiX(LO) with X = Ti, V, Fe,
Zr, Nb, Ru, Hf, Ta, Os, and L = P, Mn is performed with respect to their
activation energies for vacancy-mediated Li migration. It is shown how the
different ionic radii of the cationic substitutions influence structural
characteristics such as the octahedron volumes around Li ions on the initial
and transition state sites, which affect the activation energies
(''composition-structure-property'' relationships). The prevalent assumption
that structural bottlenecks formed by triangularly arranged oxygen atoms at a
certain location along the migration path determine the energy barriers for Li
migration is not supported by the DFT results. Instead, the ionic neighborhood
of the migrating ion in the initial and in the transition state needs to be
taken into account to relate the structure to the activation energies. This
conclusion applies to Na containing NZP compounds as well.Comment: 26 pages, 9 figure
Simulation of the shape memory effect in a NiTi nano model system
The shape memory behavior of a NiTi nanoparticle is analyzed by molecular
dynamics simulations. After a detailed description of the equilibrium
structures of the used model potential, the multi variant martensitic ground
state, which depends on the geometry of the particle, is discussed. Tensile
load is applied, changing the variant configuration to a single domain state
with a remanent strain after unloading. Heating the particle leads to a shape
memory effect without a phase transition to the austenite, but by variant
reorientation and twin boundary formation at a certain temperature. These
processes are described by stress-strain and strain-temperature curves,
together with a visualization of the microstructure of the nanoparticle.
Results are presented for five different Ni concentrations in the vicinity of
50%, showing for example, that small deviations from this ideal composition can
influence the critical temperature for shape recovery significantly.Comment: 7 pages, 4 figures; accepted for publication in the "Journal of
Alloys and Compounds
UA3/3/1 Comments on Activities at the Western Kentucky University Farm
Report regarding the use of the WKU Farm as laboratory, as demonstration farm, in research projects and for farm group meetings. Includes discussion of crops and livestock
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