Dose‐Response Models Incorporating Aerosol Size Dependency for Francisella tularensis

The effect of bioaerosol size was incorporated into predictive dose‐response models for the effects of inhaled aerosols of Francisella tularensis (the causative agent of tularemia) on rhesus monkeys and guinea pigs with bioaerosol diameters ranging between 1.0 and 24 μm. Aerosol‐size‐dependent models were formulated as modification of the exponential and β‐Poisson dose‐response models and model parameters were estimated using maximum likelihood methods and multiple data sets of quantal dose‐response data for which aerosol sizes of inhaled doses were known. Analysis of F. tularensis dose‐response data was best fit by an exponential dose‐response model with a power function including the particle diameter size substituting for the rate parameter k scaling the applied dose. There were differences in the pathogen's aerosol‐size‐dependence equation and models that better represent the observed dose‐response results than the estimate derived from applying the model developed by the International Commission on Radiological Protection (ICRP, 1994) that relies on differential regional lung deposition for human particle exposure.     

汉语不平等同义并列式双音词研究

目前,语法学界对汉语同义并列式双音词构词法的分析只到"并列"为止,没有进一步深入探讨这两个语素是怎样的并列状态。笔者认为同义并列式双音词的两个语素地位并不是绝对平等的,据此,可以把不平等同义并列式双音词分为三种类型———后限定式、前限定式、附加式。前、后限定式的不平等同义并列分别与偏正、动补结构在表意上具有相同的作用,这种跨结构的表意上的一致性,归根到底是为了适应汉语双音化和表意精确化的要求。     

加拿大环境保护法的变迁:1988—2008

加拿大环境保护法自1988年产生之后,随着社会环境的变化而不断更新,在正当的法律程序的指引之下,既重视法律文本的完善,又关注法律的实效,以此为借鉴,中国环境法在修改过程中,可以突出以下方面:一是进一步充实立法原则;二是建立环境保护责任制度;三是完善立法程序和立法技术.     

新时期以来赵执信研究述评

赵执信是清初山左诗人群体中具有传奇色彩的一位。其诗文、诗学理论、诗余乃至书法都产生了重要的影响。新时期以来，赵执信研究在学界的努力下取得了较大的成就，具体有赵执信概论性研究、赵执信诗文及诗歌理论研究、赵执信与王渔洋关系及其交游行迹研究等方面。     

论藏族的丧葬风俗

为什么全民信仰藏传佛教的藏民族,其丧葬的主要类型不是佛教所推崇的火葬而是天葬?为什么最高级的葬法是塔葬而不是最流行的天葬?为什么土葬的兴衰史与苯教的兴衰史相一致?文章从藏族的地理环境、宗教文化与民族史方面进行了论述,提出了藏民族葬俗双因素决定理论:地理环境与宗教交互作用决定了藏民族葬俗,地理环境在很大程度上抵消了宗教的决定性影响,特别是苯教所推崇的土葬和佛教所推崇的火葬的影响;而宗教又削弱了地理环境对葬俗的限制和束缚。     

浅谈民族地区人才培养和使用

人才的成长和人才作用的发挥 ,其作用不仅需要个人的努力 ,而且需要一定的物质条件 ,更需要一种能激励人才成长和发展的社会文化氛围。为此 ,必须改变传统的人才观念 ,坚持任人唯贤的原则 ,改革一切不合理的规章制度 ,建立积极、公开、平等、有效的人才竞争机制 ,使人才个性和才能都得到充分的发展和施展。     

An improved alternative estimation procedure for current population mean in presence of positively and negatively correlated auxiliary variables in two-occasion rotation patterns

Abstract

The present study confirms the influential role of a positively and a negatively correlated auxiliary variables in enhancing the precision of estimates of current population mean in two occasion rotation (successive) sampling. Exponential-type estimators of current population mean have been proposed for three different situations: (i) the information on a positively correlated auxiliary variable is readily available on both occasions (ii) the information on a negatively correlated auxiliary variable is readily available on both occasions and (iii) the information on both positively and negatively correlated auxiliary variables are readily available on both the occasions. The characteristics of the proposed estimators have been explored and their efficacious performances are compared with the natural and recent contemporary estimators. Optimum replacement strategies of the proposed estimation procedures have been formulated. Simulation and empirical studies are carried out to justify the proposition of the proposed estimators and appropriate recommendations have been put forward to the survey practitioners.     

Network Embeddedness in Exploration and Exploitation of Joint R&D Projects: A Structural Approach

This paper analyses how network embeddedness affects the exploration and exploitation of R&D project performance. By developing joint projects, partners and projects are linked to one another and form a network that generates social capital. We examine how the location, which determines the access to information and knowledge within a network of relationships, affects the performance of projects. We consider this question in the setup of exploration and exploitation projects, using a database built from an EU framework. We find that each of the structural embeddedness dimensions (degree, betweenness and eigenvector centrality) have a different impact on the exploration and exploitation project performance. Our empirical analysis extends to project management literature and social capital theory, by including the effect that the acquisition of external knowledge has on the performance of the project.     

A New Quantile Function with Applications to Reliability Analysis

In this article, we propose a new class of distributions defined by a quantile function, which nests several distributions as its members. The quantile function proposed here is the sum of the quantile functions of the generalized Pareto and Weibull distributions. Various distributional properties and reliability characteristics of the class are discussed. The estimation of the parameters of the model using L-moments is studied. Finally, we apply the model to a real life dataset.