Given the numerous knowledge representation models (KR-schemes) that have been proposed, it would be desirable to have a formal, unifying model for the description of a KR-scheme, as well as a general method of comparing KR-schemes in terms of expressive power. This work attempts to fill this gap, by proposing an elegant, yet very general, model of describing KR-schemes. This formalization is u...

In the present work, we found that the delayed rectifying outward potassium current (I(K)) in adult and neonatal cat ventricular myocytes consists of both rapid and slow components, I(Kr) and I(Ks), respectively, which can be isolated pharmacologically. Thus after complete blockade of I(Kr) with dofetilide, the remaining I(Ks) current is homogeneous, as shown by an envelope of tails test. I(Kr)...

We present the results of an extensive calorimetric study of krypton coadsorbed on graphite precoated with a saturated monolayer of carbon tetrachloride. Combining the heat capacity data with film equation of state measurements from a previous study @W. J. Weber and D. L. Goodstein, Phys. Rev. Lett. 83, 3888 ~1999!# permits construction of the Kr/CCl4 coadsorption phase diagram between 77 and 1...

The Kv11.1 (also ERG1) K(+) channel underlies cardiac I(Kr), a current that contributes to repolarization in mammalian heart. In mice, I(Kr) current density decreases with development and studies suggest that changes in the structure and/or properties of the heteromultimeric I(Kr)/Kv11.1 channel are responsible. Here, using immunohistochemistry, we report that total Kv11.1 alpha subunit protein...

knowledge of results (KR) consists of presenting KR for each of a set of trials only after the last trial in the set has been completed. In experiment 1, motivated by a guidance hypothesis for KR, we searched for an optimal number of trials to be contained in the summary KR. Using a coincident-timing task with summary lengths of 1, 5, 10, and 15 trials, in a delayed no-KR retention test of lear...

Angiogenesis is important in the development and progression of cancer, therefore the therapeutic approach based on anti-angiogenesis may represent a promising therapeutic option. KR-31831 is a novel anti-ischemic agent. Previously, we reported the anti-angiogenic activity of KR-31831. In the present study we investigated the molecular mechanisms underlying anti-angiogenic activity of KR-31831....

Self-controlled KR practice has revealed that providing participants the opportunity to control their KR is superior for motor learning compared to participants replicating the KR schedule of a self-control participant, without the choice (e.g., yoked). The purpose of the present experiment was two-fold. First, to examine the utility of a self-controlled KR schedule for learning a spatial motor...

Excitation functions of the Kr(d, α)Br, Kr(d, n)Rb and Kr(d, x)Kr reactions were measured for the first time in the energy range up to 13 MeV using the stacked gas cell technique and activation method. Highly enriched Kr was used as target material. The maximum cross section of the Kr(d, α)Br reaction at 13 MeV amounts to 21 mb and the calculated yield of Br over the energy range Ed = 13 → 4 Me...

using the gaussian 2003 software and mp2/ 6–311 ++ g** method for he: he, ne:ne andmp2/6-31g method for ar: ar, kr: kr and hf/sto-3g method for xe: xe, the optimizedinteraction energies between two like atoms of rare gases (he, ne, ar, kr and xe) as a functionof the distances between the centers of two considered atoms were evaluated and the resultswere interpreted according to the lennard – jo...