This study aimed to test the assumption drawn from weak central coherence theory that a central cognitive mechanism is responsible for integrating information at both conceptual and perceptual levels. A visual semantic memory task and a face recognition task measuring use of holistic information were administered to 15 children with autism and 16 typically developing children. If there is a central integration mechanism, performance on the two tasks should be positively associated. No relationship was found, however, between the two abilities in the comparison group and, unexpectedly, a strong significant inverse correlation was found in the autism group. Classification data further confirmed this finding and indicated the possibility of the presence of subgroups in autism. The results add to emerging evidence suggesting that central coherence is not a unitary construct.
For inspection of manufactured parts, one can use the information of two or more product characteristics that are strongly related to the characteristic of interest. Under the condition that at most a given, typically very small, fraction of the accepted parts does not satisfy the specification limit, test regions are determined such that the number of accepted products is maximized. The methods are illustrated by Monte Carlo results and a numerical example from semiconductor industry.
For inspection of manufactured parts, one can use the information of two or more product characteristics that are strongly related to the characteristic of interest. Under the condition that at most a given, typically very small, fraction of the accepted parts does not satisfy the specification limit, test regions are determined such that the number of accepted products is maximized. The methods are illustrated by Monte Carlo results and a numerical example from semiconductor industry.
The aim of this study is to review the practice and outcomes at our institution of percutaneous transhepatic placement of metallic biliary stents for non-hepato-biliary/pancreatic (non-HBP) malignant obstructive jaundice. A retrospective review was performed of the records of all patients undergoing transhepatic stenting for non-HBP malignant obstructive jaundice over a 7-year period. A total of 25 patients were successfully stented and linear regression analysis of a variety of demographic, clinical and laboratory markers against survival was performed. Survival after stenting varied from 1 to 1354 days (median 58, mean 152). An initial bilirubin level less than 300 micromol/L (P=0.01) and a reduction of greater than 50% in bilirubin post stenting (P=0.02) were strong predictors of improved survival. Older patients survived longer than younger ones (P<0.01). There was a weak association of survival with an albumin>30 g/L (P=0.06), but no statistically significant correlation with creatinine or haemoglobin levels or active tumour treatment after stenting. There were few major complications from the procedures. Transhepatic metallic biliary stenting for non-HBP malignant biliary obstruction is a safe and effective procedure, and with careful patient selection, significant periods of survival and palliation of jaundice can be achieved.
In the inspection of manufactured parts, measurements of the characteristic of interest are subject to, typically small, measurement errors. Hence, there is need for a test limit which is typically more strict than the speci®cation limit. In this paper we will discuss various criteria on which such test limits can be based.
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