The lack of emotional relations is not replaced by the ＂savant＂ characteristics （see Asperger syndrome） but by their immersing into stereotypic instincts. In other words, they compensate their divergent intrinsic ...The lack of emotional relations is not replaced by the ＂savant＂ characteristics （see Asperger syndrome） but by their immersing into stereotypic instincts. In other words, they compensate their divergent intrinsic emotions with imitated convergences （eg., the monotonous ＂convergence obsessed＂ logic of hammering, wringing hands etc.） Today＇s science cannot declare this to be convergent, especially for the fact that psychotic autist patients prove to be weak at convergence, but the male/female proportion reflects on notable facts （with Kanner syndrome it is 3：1 or 4：1, while Rett syndrome only affects females）. Can we declare Kanner and Rett syndromes to be basically female brain disorders？ Asperger-autism has been scientifically considered as a type of ＂male-brain disorder＂ since 199l （Baron-Cohen theory）. The proportion of male-female is approximately 6：1 with this disease. The author would like to demonstrate a very special case, the Asperger-autism as a ＂cognitive autism.＂ It is common to address autistic disorder as ＂pervasive＂ or ＂comprehensive＂ ontogenetic disorders because they affect all areas of adolescent psychological development negatively. But as the expression itself suggests, we are not aware of the specific disorders directly. As it will turn out we cannot deal with autism as on complex disorder, we should rather use the term in plural, i.e., autisms and autistic disorders.展开更多
The fixed-point algorithm and infomax algorithm are two of the most popular algorithms in independent component analysis(ICA).However,it is hard to take both stability and speed into consideration in processing functi...The fixed-point algorithm and infomax algorithm are two of the most popular algorithms in independent component analysis(ICA).However,it is hard to take both stability and speed into consideration in processing functional magnetic resonance imaging(fMRI)data.In this paper,an optimization model for ICA is presented and an improved fixed-point algorithm based on the model is proposed.In the new algorithms a small step size is added to increase the stability.In order to accelerate the convergence,an improvement on Newton method is made,which makes cubic convergence for the new algorithm.Applying the algorithm and two other algorithms to invivo fMRI data,the results show that the new algorithm separates independent components stably,which has faster convergence speed and less computation than the other two algorithms.The algorithm has obvious advantage in processing fMRI signal with huge data.展开更多
Estimate bounds for the Perron root of a nonnegative matrix are important in theory of nonnegative matrices.It is more practical when the bounds are expressed as an easily calcu-lated function in elements of matrices....Estimate bounds for the Perron root of a nonnegative matrix are important in theory of nonnegative matrices.It is more practical when the bounds are expressed as an easily calcu-lated function in elements of matrices.For the Perron root of nonnegative irreducible matrices,three sequences of lower bounds are presented by means of constructing shifted matrices,whose convergence is studied.The comparisons of the sequences with known ones are supplemented with a numerical example.展开更多
文摘The lack of emotional relations is not replaced by the ＂savant＂ characteristics （see Asperger syndrome） but by their immersing into stereotypic instincts. In other words, they compensate their divergent intrinsic emotions with imitated convergences （eg., the monotonous ＂convergence obsessed＂ logic of hammering, wringing hands etc.） Today＇s science cannot declare this to be convergent, especially for the fact that psychotic autist patients prove to be weak at convergence, but the male/female proportion reflects on notable facts （with Kanner syndrome it is 3：1 or 4：1, while Rett syndrome only affects females）. Can we declare Kanner and Rett syndromes to be basically female brain disorders？ Asperger-autism has been scientifically considered as a type of ＂male-brain disorder＂ since 199l （Baron-Cohen theory）. The proportion of male-female is approximately 6：1 with this disease. The author would like to demonstrate a very special case, the Asperger-autism as a ＂cognitive autism.＂ It is common to address autistic disorder as ＂pervasive＂ or ＂comprehensive＂ ontogenetic disorders because they affect all areas of adolescent psychological development negatively. But as the expression itself suggests, we are not aware of the specific disorders directly. As it will turn out we cannot deal with autism as on complex disorder, we should rather use the term in plural, i.e., autisms and autistic disorders.
文摘The fixed-point algorithm and infomax algorithm are two of the most popular algorithms in independent component analysis(ICA).However,it is hard to take both stability and speed into consideration in processing functional magnetic resonance imaging(fMRI)data.In this paper,an optimization model for ICA is presented and an improved fixed-point algorithm based on the model is proposed.In the new algorithms a small step size is added to increase the stability.In order to accelerate the convergence,an improvement on Newton method is made,which makes cubic convergence for the new algorithm.Applying the algorithm and two other algorithms to invivo fMRI data,the results show that the new algorithm separates independent components stably,which has faster convergence speed and less computation than the other two algorithms.The algorithm has obvious advantage in processing fMRI signal with huge data.
基金the National Natural Science Foundation of China (No.10771030)Project for Academic Leader and Group of UESTC (No.L08011001JX0776)
文摘Estimate bounds for the Perron root of a nonnegative matrix are important in theory of nonnegative matrices.It is more practical when the bounds are expressed as an easily calcu-lated function in elements of matrices.For the Perron root of nonnegative irreducible matrices,three sequences of lower bounds are presented by means of constructing shifted matrices,whose convergence is studied.The comparisons of the sequences with known ones are supplemented with a numerical example.
