It has been showed in [4] that any bipartite graph Ka,b, where a, b are even is decomposable into closed trails of prescribed even lengths. In this article we consider the corresponding question for open trails. We prove a necessary and sufficient condition for graphs Ka,b to be decomposable into edge-disjoint open trails of positive lengths (less than ab) whenever these lengths sum up to the s...

The development of knowledge-based systems (KBS) enables accumulated experience and knowledge to be applied to the intelligent monitoring in the field of large-scale belt conveyor systems. The first step of building knowledge bases in a KBS is referred to the knowledge acquisition (KA). KA from domain experts and field experiments has often been considered as the most difficult task and time-co...

Oxygen isotope ratios in Porites microatolls from Christmas Island in the central Pacific provide highresolution proxy records of El Niño-Southern Oscillation (ENSO) variability since 3.8 thousand years ago (ka). Compared with modern microatolls, reconstructions from fossil microatolls imply that interannual variations in ENSO sea-surface temperature and precipitation were less intense 3.8–2.8 ...

L = ∆g + aI Here a ∈ L∞(M) and ∆gu = −divg(∇u) (Or for simplicity you can choose a ∈ C∞). And we define the kernel Ka (depending on the constant a) of the differential operator L: Ka = KerL ∩W 1,2 0 (M) It is obvious that if the differential operator is coersive, then the Kernel Ka = 0. Definition 1. (Green Function) Define G : M̄×M̄\diag{M̄} → R is a Green function for L with Dirichelet Boundary ...

Changes in ionotropic glutamate NMDA, AMPA and KA receptor binding in rat caudate-putamen were examined by quantitative in vitro receptor autoradiography 5 weeks after lesioning nigrostriatal dopaminergic projections. In this animal model of Parkinson's disease, density of binding in caudate-putamen increased at KA, but not NMDA or AMPA receptors. The findings indicate that nigrostriatal dopami...

With the consideration of the existing Ka-band satellite channel model in data processing method deficiency, the Ka-band satellite channel propagation characteristic is analyzed and the influence of meteorological factors on the satellite channel is discussed. The channel of meteorological factor principal component is obtained by using the principal component analysis and fuzzy clustering anal...

Evaluation of knowledge acquisition (KA) technology is difficult because of the costs of using human expertise in experimental studies. An analysis of the types of errors a human expert makes in building a knowledge-based system (KBS) has been developed which suggests that a simulation of the key factors in building a KBS is possible. A demonstration KA simulation has been implemented for one K...

To examine Late Quaternary vegetation change across the modern vegetation gradient from continuous boreal forest (central Alaska) to Betula shrub tundra (Bristol Bay region), pollen records from Idavain and Snipe Lakes are described and compared to those of four other sites in southwest Alaska. Major features of the vegetation history at Idavain Lake include herb-dominated tundra (ca. 14}12 ka ...

Cell-specific alterations in synaptic properties of hippocampal CA1 interneurons after kainate treatment. J. Neurophysiol. 80: 2836-2847, 1998. Hippocampal sclerosis and hyperexcitability are neuropathological features of human temporal lobe epilepsy that are reproduced in the kainic acid (KA) model of epilepsy in rats. To assess directly the role of inhibitory interneurons in the KA model, the...