Generalized integer-valued random coefficient for a first order structure autoregressive (RCINAR) process

A random coefficient autoregressive process for count data based on a generalized thinning operator is presented. Existence and weak stationarity conditions for these models are established. For the particular case of the (generalized) binomial thinning, it is proved that the necessary and sufficient conditions for weak stationarity are the same as those for continuous-valued AR(1) processes. These kinds of processes are appropriate for modelling non-linear integer-valued time series. They allow for over-dispersion and are appropriate when including covariates. Model parameters estimators are calculated and their properties studied analytically and/or through simulation.     

高职艺术设计专业人才培养模式探析——以甘肃联合大学六个“1+1”为例

六个"1+1"的高职艺术设计专业人才培养模式,是针对当前高职艺术设计专业人才培养中出现的问题,结合甘肃联合大学近几年艺术设计专业建设和教学改革实践,总结出的一种人才培养模式。这是一种明显区别于本科艺术设计教育,符合高等职业教育定位,具有可操作性的人才培养模式。     

理论教学、传统实验与“有限元分析”有机结合的探索与研究

＂有限元分析＂是工程领域进行数值计算的极为重要的方法之一。为使学生掌握有限元方法的基本原理和编程技巧,更好地应用有限元分析这一强有力的数值计算工具,文章将理论分析、传统实验与计算机数值模拟有机结合,结合工程应用的具体实践,在有限元教学中不断渗透学科发展的前沿知识,从教学方式、内容选择、实验设计等几个方面作了一系列探索。     

Likelihood Inference for Unions of Interacting Discs

Abstract. This is probably the first paper which discusses likelihood inference for a random set using a germ‐grain model, where the individual grains are unobservable, edge effects occur and other complications appear. We consider the case where the grains form a disc process modelled by a marked point process, where the germs are the centres and the marks are the associated radii of the discs. We propose to use a recent parametric class of interacting disc process models, where the minimal sufficient statistic depends on various geometric properties of the random set, and the density is specified with respect to a given marked Poisson model (i.e. a Boolean model). We show how edge effects and other complications can be handled by considering a certain conditional likelihood. Our methodology is illustrated by analysing Peter Diggle's heather data set, where we discuss the results of simulation‐based maximum likelihood inference and the effect of specifying different reference Poisson models.     

实训室中高职酒店英语情景教学模式探究（二）

目前,在英语课堂中运用情景教学法已经得到许多教师的认同,并且有相当数量的教师已经在应用情景教学模式。但是高职院校如何展开酒店英语课程的情景教学,仍然是酒店管理专业教师面临的课题。本文以酒店实训室为依托,就酒店英语展开情景教学存在的问题加以剖析并提出了解决的对策。     

固体阻垢剂ZGJ-1的室内研制

针对油田结垢特点和液体阻垢剂存在间歇注入、加药不均匀、药效短、消耗大和效果不稳定等缺点，室内合成了母体阻垢剂，研制筛选出了增效剂、粘合剂的配方，固体阻垢剂ZGJ-1的成型方法和工艺，建立了固体阻垢剂平均溶解速率及溶出率的评价方法，80℃时静、动态平均溶解速率分别为0.130 8、0.159 2g/d·cm²，在加药量为10mg/L时对油田污水的阻垢率达到98.9%。现已在胜利油田推广应用。     

The effects of correlation among observations on the consistency property of sample variance

It is well known that even when the sample observations are correlated and not normal the sample variance, S² converges in probability to E(S²). But the required sample size for S² to be a consistent estimator of E(S²) is an open question. Some light is shed on this question in this paper. In particular the relation between the rate of convergence and the correlation property of the observations is explored. It is shown that the retardation to the rate of convergence is not appreciable if the correlation is moderate but it can be severe for extreme correlations.     

Lyme Disease: A Case Report

Abstract

Using a needs-assessment technique called story-boarding to determine characteristics of health promotion and wellness among university students is discussed. Storyboarding allows students to work together as they generate ideas and eliminates the territorial defensiveness that often occurs when new ideas are suggested. Sixteen graduate students in a health education teaching methods course demonstrated the use of the technique to identify characteristics of wellness for university students. In addition, they identified content areas and outlined key programs, services, personal habits, and skills useful for enhancing university students' wellness.     

An adaptive sampling scheme guided by BART—with an application to predict processor performance

The evaluation of new processor designs is an important issue in electrical and computer engineering. Architects use simulations to evaluate designs and to understand trade‐offs and interactions among design parameters. However, due to the lengthy simulation time and limited resources, it is often practically impossible to simulate a full factorial design space. Effective sampling methods and predictive models are required. In this paper, the authors propose an automated performance predictive approach which employs an adaptive sampling scheme that interactively works with the predictive model to select samples for simulation. These samples are then used to build Bayesian additive regression trees, which in turn are used to predict the whole design space. Both real data analysis and simulation studies show that the method is effective in that, though sampling at very few design points, it generates highly accurate predictions on the unsampled points. Furthermore, the proposed model provides quantitative interpretation tools with which investigators can efficiently tune design parameters in order to improve processor performance. The Canadian Journal of Statistics 38: 136–152; 2010 © 2010 Statistical Society of Canada     

Staff and youth views on autonomy and emancipation from residential care: A participatory research study

The use of participatory approaches in designing services is still relatively uncommon. In this study, we helped design a service to support the transition of youth from residential care to independent living by exploring the perspectives of staff and of youth regarding: (a) the concept and development of autonomy; and (b) key factors in developing this type of service. We gathered the data through 10 interviews with staff (n = 10) and 4 focus groups with youth (n = 21), and subjected the data to a thematic content analysis. Staff defined autonomy as self-regulation and self-care, and identified three paths to foster autonomy – a sense of normality, meaningful relationships, and planning for emancipation. The staff and youth identified the following important aspects in designing the service: achieving normality (e.g. limited number of residents), promoting youth capacity (e.g. skill-building activities), providing social support (e.g. trust and respect between residents), and assuring guidance and boundaries (e.g. supervision of youth).