生命科学与科学仪器——为《生命科学仪器》创刊而作

本文回顾了生命科学与科学仪器相互促进共同发展的历史,分析了中国生命科学发展面临的挑战和科学仪器面临的任务,提出没有自主创新的科学仪器,就很难有原始性的技术创新。同时还指出生命科学要发展,科学仪器需先行。     

略论电脑音乐配器

音色是音乐构成的四大要素之一。随着高科技的飞速发展,电子乐器如合成器音源、采样器能为作曲家提供成千上万种取之不尽的音色。在配器中是杂乱无章、随心所欲地使用各种音色,还是基于传统各类乐队配器模式,是电脑音乐工作者在理论上与时俱进,不断创新的学术课题。     

Sequential procedures based on M-estimators with discontinuous score functions

Bounded-width sequential confidence intervals and sequential tests for regression parameter based on M-estimators are extended to the case where the score-functions generating the M-estimators have jump-discontinuities. In the context of the asymptotic normality of the stopping variable, for the confidence interval problem, it is observed that the jump-discontinuities induce a slower rate of convergence. The proofs of the main theorems rest on the weak convergence of some related processes and this is also studied.     

A NOTE ON SAMPLE QUANTILE PROCESSES OF FINITE POPULATIONS

A representation is established for sample quantile processes of simple random samples drawn without replacement from finite populations. The result is then used to obtain weak limits of properly normalized quantile processes and their linear functions.     

民事裁判文书公开的中国路径——基于审判信息公开语境之诠释

民事裁判文书公开制度在审判信息公开、审判信息获取权等方面仍存在诸多问题,需遵循司法公开的本质规律、民事裁判文书公开的多元价值理念,从明确法院主动公开裁判文书的义务、拓展公众对民事审判信息知悉的渠道、扩充可公开的民事裁判文书种类、增设民事裁判文书公开救济机制,以及建立民事裁判文书更新、撤销等保障机制之路径予以优化。     

Test for Parameter Change in Linear Processes Based on Whittle's Estimator

In this article, we develop a cusum test for testing for parameter changes in linear processes based on Whittle's estimator. It is shown that under regularity conditions, the test statistic converges to the sup of a Brownian bridge. The result is particularly useful in handling the change point test in stationary ARMA processes. A simulation result is provided for illustration.     

On the Nonparametric Mean Residual Life Estimator in Length-biased Sampling

In this article, we discuss nonparametric estimation of a mean residual life function from length-biased data. Precisely, we prove strong uniform consistency and weak converge of the nonparametric mean residual life estimator in length-biased setting.     

Local Linear Estimation of Second-order Jump-diffusion Model

In this article, we propose the local linear estimators of the drift coefficient and diffusion coefficient in the second-order jump-diffusion model. We also show the consistency and asymptotic normality of these estimators under mild conditions.     

Darling–Erdős limit results for change-point detection in panel data

We wish to test the null hypothesis if the means of N panels remain the same during the observation period of length T. A quasi-likelihood argument leads to self-normalized statistics whose limit distribution under the null hypothesis is double exponential. The main results are derived assuming that the each panel is based on independent observations and then extended to linear processes. The proofs are based on an approximation of the sum of squared CUSUM processes using the Skorokhod embedding scheme. A simulation study illustrates that our results can be used in case of small and moderate N and T. We apply our results to detect change in the “corruption index”.     

Forecasting With Bayesian Vector Autoregressions—Five Years of Experience

The results obtained in five years of forecasting with Bayesian vector autoregressions (BVAR's) demonstrate that this inexpensive, reproducible statistical technique is as accurate, on average, as those used by the best known commercial forecasting services. This article considers the problem of economic forecasting, the justification for the Bayesian approach, its implementation, and the performance of one small BVAR model over the past five years.