On the Optimal Parameters for Reconstruction and Forecasting in Singular Spectrum Analysis

There are two main parameters in Singular Spectrum Analysis (SSA). The aim of this study is to determine whether the optimal values of these parameters are different for reconstruction and forecasting stages, and if those are worth the extra computational effort and time which they require. Here, we evaluate these issues using simulation study.     

State Responses to Alcohol Use and Pregnancy: Findings From the Alcohol Policy Information System

This article describes U.S. state policies related to alcohol use during pregnancy, using data from the National Institute on Alcohol Abuse and Alcoholism Alcohol Policy Information System. Specifically, this study examines trends in policies enacted by states over time and types of policies enacted across states in the United States, with a focus on whether laws were supportive or punitive toward women. Findings revealed substantial variability in characteristics of policies (19 primarily supportive, 12 primarily punitive, 12 with a mixed approach, and 8 with no policies). Findings underscore the need to examine possible consequences of policies, especially of punitive policies and “mixed” approaches.     

时钟3.2GHz直接数字频率合成器的研制

阐述了时钟频率高达3.2 GHz的新型直接数字频率合成器的设计方案,由该方案设计的直接数字频率合成器最高输出频率可达1 500 MHz,并且可以产生线性调频、脉冲步进、调频步进等多种调制信号.通过对该直接数字频率合成器与DDS芯片AD9858进行相位噪声以及杂散进行对比分析,时钟为3.2 GHz的直接数字频率合成器不仅输出带宽得以扩展,其相位噪声在所测试点比AD9858要优10 dB,窄带杂散也较AD9858有很大提高.     

AgCl团簇结构及性质的研究

用HF/STO-3G方法优化了(AgCl)n(n≤5)团簇结构,并计算了能隙、电离势、电荷布局数、偶极钜、(AgCl)2和(AgCl)3的红外光谱。结果表明:(AgCl)3结构最稳定;平均结合能随着尺寸增大趋于平缓;(AgCl)n团簇具有很强的绝缘性;结构对称性越高,电荷布局数越均匀,偶极钜越小;最强的(AgCl)2和(AgCl)3的红外光谱线分别位于142cm-1和232cm-1处。     

六种荞麦过氧化物酶同工酶研究初报

用聚丙烯酰胺凝胶柱状电泳测定滑源苦荞、蒙８７、大黑三棱、８３—２３０、辽源一７３和美国甜荞六种荞麦的过氧化物酶同工酶，结果表明：其酶谱带依次为五、五、三、三、三、二条，平均相对迁移率分别为０．３１０、０．２８９、０．２９７、０．２７６、０．２８８和０．３８０．据此．可得出：美国甜荞与前五种荞麦的地理起源和亲缘关系较远，而前五种亲缘关系较近，但又确有遗传差异．在抗病能力上．８３—２３０＞辽源—７３＞蒙—８７＞大黑三棱＞滑源苦荞＞美国甜荞．在抗寒能力上，滑源苦荞和蒙—８７最耐寒，大黑三棱、８３—２３０和辽源—７３的耐寒性稍弱，而美国甜荞的耐寒力最差．     

《野叟曝言》词语考释

根据《公路桥梁抗震设计细则》(JTG／T B02—01—2008)中的抗震设防新理念和新方法，以Ⅶ度区某连续梁桥为工程背景，建立了弹塑性有限元模型，依次进行了动力特性分析、地震反应谱分析和非线性时程分析，揭示了两级地震作用下桥梁的受力及变形情况，并对桥梁的抗震性能进行了评价，可供桥梁抗震设计参考。     

Making autism through Ocean Heaven (海洋天堂, Haiyang tiantang) and the possibilities of realizing disability differently

This article focuses on a filmic portrayal of issues relating to autism in a Chinese context, using this as a prism through which to consider how meanings associated with disability in general, and the autistic spectrum in particular, are produced. Instead of perpetuating a reductive positive/negative approach to representation, the article focuses on the fluid and dynamic ways in which author and audience co-produce texts relating to disability in ways which are invariably influenced by, and reproducing of, specific socio-cultural and discursive circumstances. Meaning-making in relation to disability is, however, ongoing and there is potential to realize disability differently.     

A Note on the Characterization of Positive Linnik Laws

Recently, Jayakumar & Pillai (1996) gave an interesting characterization of the positive Linnik laws in terms of the spectrum function of an infinitely divisible law. This paper improves their result and simplifies their proof. It proves another characterization result in terms of the Pareto law. Further, it represents the positive Linnik random variable as a function of independent gamma random variables.     

关于算子谱的孤立点问题的讨论

给出了λ0∈C为σ（A）的孤立点的一个充要条件,并讨论了0为紧算子的谱的孤立点及其预解算子的极点问题．     

Appreciating the world of autism through the lens of video interaction guidance: an exploration of a parent’s perceptions,experiences and emerging narratives on autism

This study seeks to identify understandings and narratives around autism spectrum disorder (ASD) through the application of video interaction guidance (VIG). In adopting a social constructionist approach, the case study used a person-centred model to explore a parent’s experiences and emerging narratives of ASD through the lens of VIG. Findings of the current study suggest that VIG offers an effective tool for in-depth exploration of complex, multi-storied understandings of ASD and the perceived parental role. The intervention was perceived to promote greater awareness of the child’s communication skills, beyond the ‘common’ understandings of ASD, by providing a novel outsider perspective on interactions. The intervention also promoted parental efficacy through recognition of parenting skills in supporting the development of strength-based narratives. VIG was seen to provide a platform for an exploration of existing narratives and the construction of new, preferred realities.