Improved block diagonalisation algorithm under asynchronous interference condition

2012 ◽  
Vol 6 (3) ◽  
pp. 257 ◽  
Author(s):  
Y. Wang ◽  
H. Dai ◽  
T. Wang ◽  
P. Zhang
Keyword(s):  
Interference Condition ◽  
Asynchronous Interference

A Novel Radial Telescopic Tire Building Drum and its Kinematics Design

2012 ◽  
Vol 215-216 ◽  
pp. 207-211
Author(s):  
Yun Long Wang ◽  
Lei Zhang ◽  
Yu Hu Yang
Keyword(s):  
Design Method ◽  
Maximum Pressure ◽  
Interference Condition ◽  
Radial Tire ◽  
Mechanical Structure ◽  
Pressure Angle ◽  
External Shell ◽  
Contraction Ratio ◽  
Force Transfer ◽  
Tire Production

A novel radial telescopic tire building drum is proposed to meet the radial tire production requirements. After the discussion of the mechanical structure and transmission principle of this mechanism, the kinematics equations together with the formulas of contraction ratio and pressure angle are established. In order to optimize the characteristics of force-transfer, when taking the interference condition into consideration, a kinematics design method of this novel radial telescopic building drum is proposed, which can obtain the minimal value of mechanism maximum pressure angle and satisfy the demand of contraction ratio. The most important feature of this building drum is that the external shell is driven by the internal shell. Designer can derivative more design schemes by applying this transmission principle.

Ginkgo biloba for the improvement of cognitive performance in multiple sclerosis

2007 ◽  
Vol 13 (3) ◽  
pp. 376-385 ◽  
Author(s):  
J. Lovera ◽  
B. Bagert ◽  
K. Smoot ◽  
C.D. Morris ◽  
R. Frank ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Cognitive Performance ◽  
Ginkgo Biloba ◽  
Color Word ◽  
Word Association ◽  
Controlled Trial ◽  
Verbal Learning ◽  
Stroop Test ◽  
Interference Condition ◽  
Double Blind

Objectives To determine if Ginkgo biloba (GB) improves the cognitive performance of subjects with multiple sclerosis (MS). Methods Randomized, double-blind, placebo-controlled trial of GB, 120 mg twice a day or placebo for 12 weeks. The primary outcomes were: the long delay free recall from the California Verbal Learning Test-II; the Paced Auditory Serial Addition Test; the Controlled Oral Word Association Test; the Symbol Digit Modalities Test; Useful Field of View Test; and the color-word interference condition from the Stroop Color and Word Test. Results On completion, the GB group (n=20) was 4.5 seconds (95% confidence interval (CI) (7.6, 0.9), P=0.015) faster than the placebo group (n=18) on the color-word interference condition of the Stroop test. Subjects who were more impaired at baseline experienced more improvement with GB (treatment*baseline interaction, F=8.10, P=0.008). We found no differences on the other neuropsychological tests. Subjects on GB reported fewer cognitive difficulties in the Retrospective Memory Scale of the Perceived Deficits Questionnaire than subjects on placebo (1.5 points, 95% CI (2.6, 0.3), P=0.016). No serious drug related side-effects occurred and GB did not alter platelet function assays. Conclusion Overall, GB did not show a statistically significant improvement in cognitive function. A treatment effect trend, limited to the Stroop test, suggests that GB may have an effect on cognitive domains assessed by this test, such as susceptibility to interference and mental flexibility. Multiple Sclerosis 2007; 13: 376-385. http://msj.sagepub.com

Interference in Immediate Spatial Memory: Shifts of Spatial Attention or Central executive Involvement?

1997 ◽  
Vol 50 (1) ◽  
pp. 79-99 ◽  
Author(s):  
Karl Christoph Klauer ◽  
Ralf Stegmaier
Keyword(s):  
Spatial Memory ◽  
Spatial Attention ◽  
Discrimination Task ◽  
Recall Performance ◽  
Central Executive ◽  
Pitch Discrimination ◽  
Interference Condition ◽  
Memory Experiment ◽  
The Subject ◽  
Spatial Interference

Interference in serial spatial memory was investigated in six experiments. Experiment 1 replicated Experiment 2 by Smyth and Scholey (1994) in showing that listening to tones that originated from different directions interfered with spatial memory. Experiment 2 showed, however, that the effect of mere listening was not observed when this was the only interference condition experienced by the subject. In Experiment 3, a binary pitch discrimination task performed on spatially separated tones impaired recall performance to the same extent as did left-right decisions. The same disrupting effect was also observed when the tones were presented from the same direction in the pitch discrimination task (Experiment 4) as well as in a binary loudness discrimination task (Experiment 5). Finally, repeating heard words did not interfere, whereas a pitch discrimination performed on these same words disrupted recall (Experiment 6). It is argued that the disrupting effects reflect not a specifically spatial interference, but a central executive involvement in the rehearsal process in serial spatial memory.

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