Quantifying the Distribution of Inhalation Exposure in Human Populations: 2. Distributions of Time Spent by Adults, Adolescents, and Children at Home, at Work, and at School

Using distributions of time spent at various ventilation levels, ranges of inhalation exposure in the population can be established. Distributions of exposure time were determined using results of a study by the California Air Resources Board (CARB) which focused on time spent by humans participating in various activities and the locations where the activities occurred. The daily at-home activities from the CARB study were assigned to one of three ventilation levels, generating aggregate time periods. Distinct age and gender populations were identified, and distributions for aggregate time were established for these populations at each of the ventilation levels. In addition to aggregate time spent at home, distributions for various ages and genders were established for aggregate time spent at school and work. By combining distributions of aggregate time with corresponding ventilation rates, the distribution of inhalation rates can be established for at home, at work, and at school exposures.     

知识共享过程对信息系统整合时间进度影响分析

通过建立知识积累曲线模型以及结合模型进行案例分析,研究信息系统整合过程中知识共享程度、系统创新度以及知识获取能力对系统整合时间进度的影响,得到影响因素变化时信息系统整合的时间进度变化趋势以及在知识创新度和知识获取能力不同的条件下,信息系统整合时间进度节约对知识共享的依赖程度.     

一种基于曲线拟合的客户预期贡献计量方法

本文对客户资产中最为关键的计算因子——客户预期贡献,提出一种利用最小二乘法进行回归分析,拟合出客户预期贡献的计算函数,并将其运用到客户资产计算公式中,建立客户资产度量模型.本文还以中国建设银行某支行餐饮娱乐业固定资产贷款业务为案例,阐明了该方法的应用,并对计算出的客户资产结果进行了拟合优度检验和显著性检验.     

Reducing Customer Dissatisfaction: How Important is Learning to Reduce Service Failure?

As service failures are inevitable, firms must be prepared to recover and learn from service failures. Yet, the majority of customers are still dissatisfied with the way firms resolve their complaints. Can learning to reduce service failures reduce customer dissatisfaction, and to what extent are such reductions sustainable? Previous research showed that organizational learning curves for customer dissatisfaction (i) follow a U‐shaped function of operating experience and (ii) are heterogeneous across firms. In this paper, I tease out where the U‐shaped learning‐curve effect and learning‐curve heterogeneity originate: service failure or customers' propensity to complain with a third party given the occurrence of a service failure. Using quarterly data for nine major US airlines over 11 years, I find that the U‐shaped learning‐curve effect and the learning‐curve heterogeneity originate in the propensity to complain. In the long term, reductions in service failure did not translate in sustainable reductions in customer dissatisfaction. Customers' propensity to complain eventually went up. Managing the propensity to complain provides more opportunity for a firm to distinguish itself from competitors.     

论代理契约中决策方案的设计与选择

本文论述了以博奕关系简化复杂的代理关系,用必然等值评估代理人的优先选择曲线,根据代理人优先选择曲线的类型,分析代理人的风险态度,据以设计相应的激励方案的方法与过程.     

谈数词在英语习语中的运用

在认真分析大量英语数词习语实例的基础上，指出数词在英语习语中主要有单用、连用、重复、对举、变倍使用等多种形式，并对各种形式逐一作了阐述说明。在此基础上进一步探讨了数调在英语习语中所具有的表示多少、相等、替代、实指数量等语义功能，同时指出，除反映客观事物的数量之外，数词还可以用作修辞手段，增强语言的艺术表现力，并着重分析了利用数词表示夸张、比喻、对比、委婉、借代等几种修辞功能。     

中国个人所得税制度的思考

针对中国个人所得税在税制模式的选择、税率的设计以及征收管理等方面都存在的缺陷,分析了现行个人所得税制存在的主要问题,提出了改变税制模式、重新设计税率、调整减免税项目以及完善个人所得税的征管制度等改革设想,为中国个人所得税改革提供思路。     

儿童拼图性识字的记忆研究

以艾宾浩斯的遗忘曲线为基本框架,通过拼图性学习和常规性学习两种不同学习生字方法的实验比较,对儿童识字的一般性规律进行研究。得到结论:拼图性识字在记忆的保持上优于常规性识字;拼图性识字在学习有笔画难度的字上优于常规性识字;拼图性识字同样符合艾宾浩斯的遗忘曲线规律。拼图性识字教学符合儿童以动作思维为主的认识特点,符合儿童心理的年龄特征,能提高对字形记忆的效果,让儿童可以有效、有趣、自主进行早期识字学习。     

信息控制与篇章构建

建构篇章以传递信息为目的。篇章是个控制论系统 ,信息编码者在操作时必须考虑解码者对所传递信息前提的认知能力以及对信息本身的解读能力 ,从而对编码方式做出调整。在宏观结构上 ,篇章的信息分布应表现出有序性并形成信息链 ;在信息编码处理上 ,利用删除规则、概括规则、组织规则、名词化等手段能增强信道的输送能力。以信息控制论参与语篇建构应遵循经济、适量、保真等原则 ,以达成信息传递的佳效。