7 research outputs found
On Stochastic Orders for Sums of Independent Random Variables
No full textIn this paper, it is shown that a convolution of uniform distributions (a) is more dispersed and (b) has a smaller hazard rate when the scale parameters of the uniform distributions are more dispersed in the sense of majorization. It is also shown that a convolution of gamma distributions with a common shape parameter greater than 1 is larger in (a) likelihood ratio order and (b) dispersive order when the scale parameters are more dispersed in the sense of majorization.convolutions dispersive order hazard rate order likelihood ratio order majorization gamma distribution exponential distribution uniform distribution increasing failure rate distribution totally positive of order two function
Typewriter: print on demand
No full textAn exhibition of typewriters, related works and Artists’ Books presented by Angie & Simon Butler.</p
Full data package
No full textIncludes raw migratory connectivity data & annotated, reproducible R scripts. See README.txt for more details
RSPB-2016-0806 revised SOM from Demographic drivers of decline and recovery in an Afro-Palaearctic migratory bird population
No full textAdditional methodology for regional integrated population model
Raw migratory connectivity data
No full textData were extracted from the literature (see Materials & Methods), and essentially represent start and end points (i.e. breeding and non-breeding locations) of the migration routes of individual tracked migrants land-birds.
Named variables are defined as follows:
"system" (TEXT) - migration system; "afro" = Afro-Palearctice, "neo" = Neotropical
"study" (TEXT) - data source; see Supplementary Materials for full citations
"species" (TEXT) - species common name
"family" (TEXT) - taxonomic family
"order" (TEXT) - taxonomic order
"popunique" (NUMERIC) - arbitrary code grouping individuals from the same species into unique populations separated by < 100km. Typically, this means grouping individuals from the same study site into populations.
"method" (NUMERIC) - tagging method; 1 = solar geolocator, 2 = GPS, 3 = satellite tag
"sampledat" (NUMERIC) - sampling site; 1 = breeding site, 2 = non-breeding site
"age" (NUMERIC) - age of bird; 0 = juvenile (first migration), 1 = adult, blank = unknown
"country" (TEXT) - tagging country
"state" (TEXT) - tagging state / province (for USA and Canada)
"year" (NUMERIC) - year of tagging (2014 = 2014/15 migration period); blank if unknown
"blat" (NUMERIC) - latitude of tagging site in decimal degrees
"blon" (NUMERIC) - longitude of tagging site in decimal degrees
"wlat1" (NUMERIC) - latitude of first winter site in decimal degrees
"wlon1" (NUMERIC) - longitude of first winter site in decimal degrees
"wlat2" (NUMERIC) - (if applicable) latitude of second winter site in decimal degrees
"wlon2" (NUMERIC) - (if applicable) longitude of second winter site in decimal degrees
"wlat3" (NUMERIC) - (if applicable) latitude of third winter site in decimal degrees
"wlon3" (NUMERIC) - (if applicable) longitude of third winter site in decimal degrees
"notes" (TEXT) - additional note
Thermodynamics of Imidazolium-Based Ionic Liquids Containing PF<sub>6</sub> Anions
No full textImidazolium-based
ionic liquids (ILs) with PF6– anions
are considered as low-cost solvents for separation processes,
but they exhibit restricted thermal stabilities. Reliable measurements
of vaporization thermodynamics by conventional methods have failed.
In this work, we applied a quartz-crystal microbalance method to determine
for the first time the absolute vapor pressures for the [Cnmim][PF6] family, with n = 2, 4, 6, 8, and 10, in the temperature range 403–461 K.
An absence of decomposition
of ILs in experimental conditions was determined by the attenuated
total reflection-infrared spectroscopy. The consistency of the experimental
results within the homologous series was established through enthalpy
and entropy analyses of the liquid and gas phases as well as by molecular
dynamics simulations
Spectral problems for operator matrices
No full textWe study spectral properties of 2 × 2 block operator matrices whose entries are unbounded operators between Banach spaces and with domains consisting of vectors satisfying certain relations between their components. We investigate closability in the product space, essential spectra and generation of holomorphic semigroups. Application is given to several models governed by ordinary and partial differential equations, for example containing delays, floating singularities or eigenvalue dependent boundary conditions.
