Blocking effects were examined in an associative learning task in which to-be-learned cues varied along two dimensions. Experiment 1 replicated the standard blocking effect when to-be-learned cues had two predictive dimensions. In Experiment 2, cues varied on one predictive dimension and a second non-predictive dimension. Results were that blocking a particular cue (e.g. purple circle) led to b...

In the blocking paradigm, prior conditioning to one stimulus, A, interferes with conditioning to a second stimulus, B, when the two are reinforced as a compound in subsequent training. The present experiment employed a conditioned emotional response (CER) procedure with rats to examine the effects of 1.5 mg/kg dl-amphetamine on blocking. The drug was administered in a 2 x 2 design, that is, dru...

In order to estimate the mean of maternal antibody in calves against BHV-1 (Bovine Herpes virus type 1), this study was carried out in a population of calves from non-vaccinated dairy cattle at 2 livestock in Qazvin province. One hundred thirteen sera out of 512 were collected from 1-4 months unvaccinated calves. We used Blocking –Percentage of maternal antibodies against BHV-1, which obtained ...

AbstractTransform coding has been chosen for still image compression in the JPEG [1] standard. Although transform coding performs superior to many other image compression methods [2] and has fast algorithms for implementation [3], it is limited by a blocking effect at low bit rates. The blocking effect is inherent in all nonoverlapping transforms. This paper presents a technique for reducing bl...

Abstract— We evaluate the effects of mobility and reservations on new call blocking and handoff blocking We evaluate the effects of mobility and reservations on new call blocking and handoff blocking in multirate wireless networks. The model evaluated uses Fixed Channel Assignment (FCA) with priority for handoffs over new call arrivals by reserving a number of channels for handoff calls in all ...

JPEG is one of the most widely used image compression method, but it causes annoying blocking artifacts at low bit-rates. Sparse representation is an efficient technique which can solve many inverse problems in image processing applications such as denoising and deblocking. In this paper, a post-processing method is proposed for reducing JPEG blocking effects via sparse representation. In this ...

This article investigates the extent to which synonymy blocking occurs in the synchronic derivation and, more controversially, whether it is predicted by the Elsewhere Condition (‘EC’). It argues that in current Lexical Morphology, EC accurately predicts the presence of ‘ token blocking’ and the absence of ‘ type blocking’, that apparent token-blocking failure is due either to non-synonymy or t...

1. The effect on rectal temperature of adrenoceptor blocking agents, injected through a cannula chronically implanted into a lateral cerebral ventricle, was examined in unanaesthetized rabbits, cats and rats, kept at room temperature (19-22 degrees C).2. In rabbits, the alpha-adrenoceptor blocking agent phenoxybenzamine (50 or 100 mug) produced marked hypothermia when injected intraventricularl...