This paper deals with belief models for both finite and countable sequences of exchangeable random variables taking a finite number of values. When such sequences of random variables are assumed to be exchangeable, this more-or-less means that the specific order in which they are observed is deemed irrelevant. The first detailed study of exchangeability was made by de Finetti [5] (with the term...

-Model cation-exchange curves are presented for an idealized kaolinite surface where the charge on the surface (1) has its origin in cation substitution in the structure, and hence, is pH independent; and (2) is produced by protonation/deprotonation reactions of oxide-like sites, and hence, depends on the acid and base strengths of the surface sites, as welt as the ionic strength. Two pH-indepe...

We report a mass spectrometric study on sodium ion induced central nucleotide deletion from protonated oligonucleotides (ONTs) and the concurrent recombination of the terminal nucleotides. To shed some light on the mechanism behind this intriguing fragmentation channel, we have studied the metastable decay of a number of different protonated hexameric and octameric oligonucleotides with 0-6 and...

Tobacco has previously been used in investigations of metals and radionuclide uptake. This study presents determination bioaccumulation translocation 60Co2+ ions tobacco plants (Nicotiana tabacum L.) grown Hoagland’s nutrient solution. Cobalt concentration increased with increasing Bioaccumulation from the initial C0 = 0.96 μM Co reached 90% after 7 day cultivation. Only small amounts accumulat...

Special funds project of scientific research in Ankang University, No. AYQDZR200905 Abstract In this paper, the Marcinkiewicz type theorem is extended to the case of exchangeable random variables. As a generalization, we also obtain two strong laws of large numbers on the weighted sum of exchangeable random variables

The permeability surface area (PS) product, an index of permeability of the blood-brain barrier (BBB), was measured by using the in situ perfusion method. In the cerebral circulation, the fraction of drug that permeates into the brain through the BBB is not only the unbound fraction but also the fraction dissociated from the protein in the perfusate. The sum of these two fractions, the apparent...

We prove a uniformly computable version of de Finetti’s theorem on exchangeable sequences of real random variables. As a consequence, exchangeable stochastic processes in probabilistic functional programming languages can be automatically rewritten as procedures that do not modify non-local state. Along the way, we prove that a distribution on the unit interval is computable if and only if its ...

We study Hoeffding decomposable exchangeable sequences with values in a finite set D = {d1, . . . , dK}. We provide a new combinatorial characterization of Hoeffding decomposability and use this result to show that, for every K ≥ 3, there exists a class of neither Pólya nor i.i.d. D-valued exchangeable sequences that are Hoeffding decomposable.

mental analysis1} and high resolution fast atom bombardment MS (HRFAB-MS)1* and 13C NMRspectral data (Table 1). All 18 carbon signals were seen in the 13G NMRspectrum, consisting of one methyl, 5 CH2, 2 methoxy, one oxymethine, 2 =CH and 7 sp2 quaternary carbons. These groups accounted 22 non-exchangeable protons and therefore 2A possesses 2 exchangeable protons. It reacted quickly with trimeth...

RATIONALE Determination of non-exchangeable hydrogen isotopic compositions (δ2 H values) of bulk complex organic materials is difficult due to uncontrolled H isotope exchange between the organic material and ambient water vapor. A number of calibration keratinous materials with carefully measured hydrogen isotopic compositions of the non-exchangeable fraction were proposed to enable stable isot...