我国环境影响评价公众参与制度中若干问题之评析

环境影响评价是预防环境污染和生态破坏的重要法律制度,公众参与是国内外环境保护领域的一项基本法律原则,对于环境影响评价制度的有效推行以及公共环境纠纷的防范具有重要意义。我国现有立法难以有效保障公众对环境影响评价的参与权的实现。因此,需要进一步明确参与环境影响评价的公众的范围和类型,扩大公众参与环境影响评价的范围,完善公众参与环境影响评价的方式,提高公众参与环境影响评价的效力。     

巩固和发展和谐的社会主义民族关系——对散居少数民族权益保障问题的思考

随着社会和经济的发展，少数民族公民散居于各地的趋势日益明显，民族散居化的格局日益突出。进一步重视少数民族工作，注意保障散居少数民族权益，对更好的巩固和发展和谐的社会主义民族关系具有重要的现实意义。可以从观念上、立法上进一步完善散居少数民族权益保障法律制度。     

"以社会制约权力"是遏制腐败的重要途径

腐败是转型期中国所面临的诸多社会问题中一个十分突出的问题。本文以"社会制约权力"为切入点,探讨腐败产生根源,力求在解决腐败问题上提出新的思路,对反腐理论的发展和实践起到一定的推进作用。     

略论近代中国民族意识的觉醒与嬗变

近代中国,随着亡国灭种危机的不断加深,在国内外的多重压力之下,为谋自救而觉醒的民族意识迅速成为最有效的社会动员资源.近代民族意识的产生与发展不可能完全脱离传统民族意识和观念的影响,二者往往内在关联、颉颃消长、交织重叠在一起,决定了近代中国民族意识的多样性与复杂性.中国近代的不同精英个体及社会群体对中国传统民族意识有着不同汲取,从而对民族意识有着不同的认知及表达.他们的内在体认和外在表征勾勒出民族意识在近代中国的嬗变轨迹.中国近代民族意识旨归于孙中山之"三民主义",是历史发展的必然选择.     

基于时频分析的裂纹转子碰摩故障特征研究

为研究转子系统耦合故障特性,采用有限元方法建立了含有横向裂纹、转静碰摩的非线性转子动力学模型。首先研究了不同转速下裂纹、碰摩单一故障下转子系统的振动响应,其次研究了两种故障耦合情况下系统的振动响应特征。采用波形图、FFT谱图、瞬时频率和Hilbert-Huang时频谱(HHS)相结合的方法对故障转子振动信号进行了分析。分析结果表明:运用多种时频分析相结合的方法可以较为全面地了解转子的故障特征,裂纹转子在1/5、1/3临界转速时会发生较为明显的5X、3X谐波,且裂纹的产生会导致响应幅值增大,从而引起更为严重的碰摩。      

普通野生稻和药用野生稻种子休眠性的研究

对普通野生稻和药用野生稻种子休眠的原因进行了探讨,表明野生稻种的遗传特性、形态性状、颖壳的透性和种子的生理特性与种子休眠有关。研究结果为打破野生稻种子休眠、提高其发茅力提供了依据和适宜的方法。     

Confidence intervals for the difference in paired Youden indices

Comparison of accuracy between two diagnostic tests can be implemented by investigating the difference in paired Youden indices. However, few literature articles have discussed the inferences for the difference in paired Youden indices. In this paper, we propose an exact confidence interval for the difference in paired Youden indices based on the generalized pivotal quantities. For comparison, the maximum likelihood estimate‐based interval and a bootstrap‐based interval are also included in the study for the difference in paired Youden indices. Abundant simulation studies are conducted to compare the relative performance of these intervals by evaluating the coverage probability and average interval length. Our simulation results demonstrate that the exact confidence interval outperforms the other two intervals even with small sample size when the underlying distributions are normal. A real application is also used to illustrate the proposed intervals. Copyright © 2012 John Wiley & Sons, Ltd.     

A lower bound for the centred L 2-discrepancy on combined designs under the asymmetric factorials

The foldover is a useful technique in the construction of two-level factorial designs for follow-up experiments. To search an optimal foldover plans is an important issue. In this paper, for a set of asymmetric fractional factorials such as the original designs, a lower bound for centred L ₂-discrepancy of combined designs under a general foldover plan is obtained, which can be used as a benchmark for searching optimal foldover plans. All of our results are the extended ones of Ou et al. [Lower bounds of various discrepancies on combined designs, Metrika 74 (2011), pp. 109–119] for symmetric designs to asymmetric designs. Moreover, it also provides a theoretical justification for optimal foldover plans in terms of uniformity criterion.     

A Shrinkage Estimation of Central Subspace in Sufficient Dimension Reduction

Sliced regression is an effective dimension reduction method by replacing the original high-dimensional predictors with its appropriate low-dimensional projection. It is free from any probabilistic assumption and can exhaustively estimate the central subspace. In this article, we propose to incorporate shrinkage estimation into sliced regression so that variable selection can be achieved simultaneously with dimension reduction. The new method can improve the estimation accuracy and achieve better interpretability for the reduced variables. The efficacy of proposed method is shown through both simulation and real data analysis.     

Inference for a Linear Functional of Cumulative Hazard Function Via Empirical Likelihood

This article discusses sampling plans, that is, the allocation of sampling units, for computing tolerance limits in a balanced one--way random-effects model. The expected width of the tolerance interval is derived and used as the basis for comparing different sampling plans. A well-known cost function and examples are used to facilitate the discussion.