基于51单片机的小型温度测量系统

本文介绍了单线数字温度传感器DS18820的结构、特点、工作原理，设计了一种基于DS18820和AT89S52单片机的温度测量系统的硬件结构及汇蝙程序设计。     

Comment on An and Schorfheide's Bayesian Analysis of DSGE Models

An and Schorfheide's article provides an excellent review of Bayesian estimation of DSGE models. Rather than recapitulating the points already made in this article, my comment focuses on three aspects. It proposes a convergence measure to take account of serial correlation of MCMC draws, explains why the DSGE-VAR framework for policy analysis can be improved by avoiding the ad hoc identification assumption, and discusses an alternative structural approach to model misspecification.     

在教学中提高A、B级英语考试水平

近几年来,高职高专的英语应用能力考试得到了大大的推广,当下进行的高职教育评估对该项考试的过级率更是提出了更高的要求。对高职高专的英语应用能力A、B级考试做的相关教学探索,实践证明相关的作法实施得到了良好的效果。     

免疫信息系统的数据安全与应用

随着社会的进步,居民生活水平的不断提高,疾病防护与儿童免疫全面信息化管理已经成为社会趋势。而对于该系统的数据安全问题就更显得十分重要,本采用双机热备份系统,对数据进行实时备份。     

跨境电子商务合同履行流程研究

“互联网+外贸”促进了跨境电子商务的蓬勃发展。而跨境电子商务贸易中最重要的环节为合同履行的过程,它是指在跨境电子商务合同商订后,买卖双方需要做的以使整个交易顺利完成的所有工作,其具体流程主要包括买方付款、卖方发货、报检进仓、平台报关和物流配送及信息跟踪。但目前由于我国的跨境电子商务刚刚起步,政策监管体系还不完善,政策支持还未到位,合同履行中第三方支付、物流、检验检疫以及报关纳税等流程都存在诸多问题。因此,针对这些具体问题,需要在现有交易支付平台上建立健全用户核对系统,确保交易安全,还要构建跨境电子商务风险监控和质量追溯体系,并创新海关监管模式,完善申报制度,并尽快建立一套完善的物流整体解决方案来实现物流、海关和商检等环节的快速衔接,进而促进我国跨境电子商务的快速健康发展。     

Threshold‐free estimation of functional antibody titers of a group B streptococcus opsonophagocytic killing assay

Opsonophagocytic killing assays (OPKA) are routinely used for the quantification of bactericidal antibodies in blood serum samples. Quantification of the OPKA readout, the titer, provides the basis for the statistical analysis of vaccine clinical trials having functional immune response endpoints. Traditional OPKA titers are defined as the maximum serum dilution yielding a predefined bacterial killing threshold value, and they are estimated by fitting a dose‐response model to the dilution‐killing curve. This paper illustrates a novel definition of titer, the threshold‐free titer, which preserves biological interpretability while not depending on any killing threshold or on a postulated shape of the dose‐response curve. These titers are shown to be more precise than the traditional threshold‐based titers when using simulated and experimental group B streptococcus OPKA experimental data. Also, titer linearity is shown to be not measurable when using threshold‐based titers, whereas it becomes measurable using threshold‐free titers. The biological interpretability and operational characteristics demonstrated here indicate that threshold‐free titers are an appropriate tool for the routine analysis of OPKA data. Copyright © 2015 John Wiley & Sons, Ltd.     

云南省生物资源产业发展与风险投资--以花卉与生物制药为例

作者立足于云南省生物资源开发这一新兴产业的发展,通过具体调研和理论分析,从云南省生物资源产业的发展现状及其存在的主要问题出发,通过论证生物资源产业发展与风险投资的关系,提出了风险投资介入云南省生物资源产业的可行途径和模式,并对政府资金的运作和风险投资企业的运营提出了具体建议。     

On the distribution of quadratic functionals of the ordinary and fractional Brownian motions

In this paper we discuss some distributional properties of quadratic functionals of the ordinary and fractional Brownian motions (fBms). As far as the ordinary Brownian motion (Bm) is concerned, those properties have been established extensively. A transition from the Bm to the fBm is not straightforward. Some difficulties associated with dealing with the fBm are explained, and a way to solving the problem is indicated, and some conjectures are given.     

Lawrence R. Klein 1920–2013: Notes on the early years

Klein can well be said to have created the field of macroeconometric modeling almost singlehandedly. His international influence started at an early stage. The article offers scattered archive observations on Klein's early years from undergraduate study to the University of Pennsylvania in 1958. Klein was in 1944 recruited by the Cowles Commission in Chicago to construct the first macroeconomic model in the USA, drawing on the experiences of the interwar modeling work of Jan Tinbergen and the new path-breaking econometric methods developed by Trygve Haavelmo. The first Klein model was taken into use at the end of 1945 to shed light on the prospects for the US economy in the transition from war to peace. After two-three years in Chicago Chicago, Klein traveled for a year in Europe and initiated macroeconometric modeling work in Canada, at the University of Michigan, and at Oxford University. This was only the beginning of the lifelong influence exerted on modelers around the globe. The article pays attention to Klein's relation to Paul Samuelson, Jacob Marschak, Trygve Haavelmo, Ragnar Frisch, and others.