This paper considers the problem of jointly estimating marginal quantiles of a multivariatedistribution.A sufficient condition for an estimator that converges in probability under a multivariate version of Robbins–Mo...This paper considers the problem of jointly estimating marginal quantiles of a multivariatedistribution.A sufficient condition for an estimator that converges in probability under a multivariate version of Robbins–Monro procedure is provided.We propose an efficient procedurewhich incorporates the correlation structure of the multivariate distribution to improve the estimation especially for cases involving extreme marginal quantiles.Estimation efficiency of theproposed method is demonstrated by simulation in comparison with a general multivariate Robbins–Monro procedure and an efficient Robbins–Monro procedure that estimates the marginalquantiles separately.展开更多
On behalf of all authors who contributed to our recent article describing the results from a prospective longitudinal study demonstrating amphetaminetype stimulant-(ATS-)induced reductions in putamen volume and associ...On behalf of all authors who contributed to our recent article describing the results from a prospective longitudinal study demonstrating amphetaminetype stimulant-(ATS-)induced reductions in putamen volume and associated cognitive decline in moderate users of these drugs(Kendrick et al.,2021),I thank Professor Trevor Robbins for the flanking commentary.The commentary in the current issue of Psychoradiology(Robbins,2021)sets our findings into the context of recent developments in the field of addiction research and I would like to take the opportunity to further elaborate on progress as well as challenges in neuroimaging of addiction.展开更多
As an Academy Award-winning actor an Oscar-nominated director and an acclaimed screenwriter with a solo album to his namejim Robbins epitomizesthe modern Renaissance man.However,ashe tells That's,he feels"mos...As an Academy Award-winning actor an Oscar-nominated director and an acclaimed screenwriter with a solo album to his namejim Robbins epitomizesthe modern Renaissance man.However,ashe tells That's,he feels"most at home"workshopping new pieces with The Actors?Gang,the theater group he co-founded in California 35 years ago.展开更多
As his career enters its fourth decade,Tim Robbins has pretty much done it all.He won an Academy Award for his stirring performance in Mystic River,released a solo album four years ago and is about to star alongside J...As his career enters its fourth decade,Tim Robbins has pretty much done it all.He won an Academy Award for his stirring performance in Mystic River,released a solo album four years ago and is about to star alongside Jack Black in the upcoming HBO comedy series The Brink.However,the Oscar-nominated director will be indulging his first love when his Actors’Gang brings a workshop production of A Midsummer Night’s Dream to the Daguan Theatre from June 19-21.展开更多
鲨鱼到底会不会得癌症?近日,澳大利亚科学家发现一条大白鲨的下颚上出现了一大块肿瘤;此外,他们在一条短尾真鲨的头部也发现了肿瘤。根据发表在《鱼类疾病杂志》(Journal of Fish Diseases)上的论文,这条大白鲨嘴巴上的肿瘤长、宽均大约...鲨鱼到底会不会得癌症?近日,澳大利亚科学家发现一条大白鲨的下颚上出现了一大块肿瘤;此外,他们在一条短尾真鲨的头部也发现了肿瘤。根据发表在《鱼类疾病杂志》(Journal of Fish Diseases)上的论文,这条大白鲨嘴巴上的肿瘤长、宽均大约为30厘米。到目前为止,科学家已经在至少23种鲨鱼身上发现了肿瘤,包括上面提到的两种。早在1853年,科学家就在一条团扇鳐(学名:Raja clavata)的尾巴上发现了一个长30厘米的带蒂纤维瘤。论文作者之一蕾切尔·罗宾斯(Rachel Robbins)说:"研究所传达的一个主要信息,就是在鲨鱼中发现了越来越多肿瘤形成的证据,这与鲨鱼不会患这种疾病的流行观点是相对立的。"展开更多
基金This work was supported by the National Natural Science Foundation of China[grant number 11271134]the 111 Project(B14019)of Ministry of Education of China.
文摘This paper considers the problem of jointly estimating marginal quantiles of a multivariatedistribution.A sufficient condition for an estimator that converges in probability under a multivariate version of Robbins–Monro procedure is provided.We propose an efficient procedurewhich incorporates the correlation structure of the multivariate distribution to improve the estimation especially for cases involving extreme marginal quantiles.Estimation efficiency of theproposed method is demonstrated by simulation in comparison with a general multivariate Robbins–Monro procedure and an efficient Robbins–Monro procedure that estimates the marginalquantiles separately.
文摘On behalf of all authors who contributed to our recent article describing the results from a prospective longitudinal study demonstrating amphetaminetype stimulant-(ATS-)induced reductions in putamen volume and associated cognitive decline in moderate users of these drugs(Kendrick et al.,2021),I thank Professor Trevor Robbins for the flanking commentary.The commentary in the current issue of Psychoradiology(Robbins,2021)sets our findings into the context of recent developments in the field of addiction research and I would like to take the opportunity to further elaborate on progress as well as challenges in neuroimaging of addiction.
文摘As an Academy Award-winning actor an Oscar-nominated director and an acclaimed screenwriter with a solo album to his namejim Robbins epitomizesthe modern Renaissance man.However,ashe tells That's,he feels"most at home"workshopping new pieces with The Actors?Gang,the theater group he co-founded in California 35 years ago.
文摘As his career enters its fourth decade,Tim Robbins has pretty much done it all.He won an Academy Award for his stirring performance in Mystic River,released a solo album four years ago and is about to star alongside Jack Black in the upcoming HBO comedy series The Brink.However,the Oscar-nominated director will be indulging his first love when his Actors’Gang brings a workshop production of A Midsummer Night’s Dream to the Daguan Theatre from June 19-21.
文摘鲨鱼到底会不会得癌症?近日,澳大利亚科学家发现一条大白鲨的下颚上出现了一大块肿瘤;此外,他们在一条短尾真鲨的头部也发现了肿瘤。根据发表在《鱼类疾病杂志》(Journal of Fish Diseases)上的论文,这条大白鲨嘴巴上的肿瘤长、宽均大约为30厘米。到目前为止,科学家已经在至少23种鲨鱼身上发现了肿瘤,包括上面提到的两种。早在1853年,科学家就在一条团扇鳐(学名:Raja clavata)的尾巴上发现了一个长30厘米的带蒂纤维瘤。论文作者之一蕾切尔·罗宾斯(Rachel Robbins)说:"研究所传达的一个主要信息,就是在鲨鱼中发现了越来越多肿瘤形成的证据,这与鲨鱼不会患这种疾病的流行观点是相对立的。"
