中国与印度农机产品的出口贸易及竞争力比较

本文运用了进出口相似度、进出口价格比、RCA指数等指标,对中印农机产品的出口状况、进出口价格及竞争力进行比较。研究结果表明,两国出口的农机产品结构相似,主要出口市场有较大重叠,存在较强的竞争性关系;中印农机产品的出口价格均低于进口价格,两国的贸易条件都较差,中国的进出口价格比低于印度,在贸易条件和出口盈利上处于劣势;中印农机产品的竞争力都很弱,中国只在出口规模上具有优势,竞争力水平不及印度。要改变中国农机产品的竞争力普遍较弱的现状,一方面应该利用自身的市场优势重点培育部分有竞争力的产品,另一方面应该借鉴印度经验培植国际知名的大企业,从而实现市场开拓、技术创新的梯队式发展。     

基于房价收入比的梯度住房政策体系研究——以上海市为例

为了实现居者有其屋,需要针对不同的收入群体采取不同的住房政策,为此要对居民的住房支付能力进行科学的判断。本文采用国际通用的衡量居民住房支付能力的房价收入比指标,用上海市的实际数据对其进行修正使用,以计算结果作为制定差别化住房政策的标准,建立起长效、稳定的住房经济调控政策与住房社会保障政策相结合的梯度住房政策体系。     

中外企业环境社会责任推进机制的比较研究

在建设和谐社会的过程中,作为市场主体的企业,其经济目标和社会环境责任应是相辅相成的.企业在谋求自身经济利益最大化的同时,还应寻求自身发展与社会经济可持续发展目标的一致性.现阶段企业环境责任问题不仅仅是企业自身关注的问题,更是各级政府和社会各界都极为重视的问题.本文通过中外企业在履行环境责任方面的比较研究,希望从中得到一些启迪.     

基于最小二乘支持向量机的标高金预测方法研究

标高金确定的合适与否,直接影响着投标方能否中标和盈利。针对传统神经网络方法存在的缺点,提出了一种基于最小二乘支持向量机的标高金预测方法,并对该方法进行了实证研究。实例研究表明,基于最小二乘支持向量机的标高金预测方法是有效可行的,其在解决小样本数据的非线性问题上有着传统方法无可比拟的优越性。该方法为科学合理地确定标高金提供了一种新的思路,可为投标方的报价决策提供参考。     

Does the relationship between income and child health differ across income groups? Evidence from India

This study explores the relationship between child health and socioeconomic status (health-income gradient) using the Indian Human Development Survey-II (2011-12) for children up to 5 years of age. Unlike previous studies our empirical analysis allows the gradient to vary across different income intervals using linear and cubic spline regressions. We use objective measure of child health - height-for-age Z-scores and find that an increase in income, on an average leads to reduction in prevalence of stunting. We also find differential effect of income on health across the income distribution with no effect of income on child health for very poor households. Further we explore underlying factors explaining the gradient and find that maternal health, housing quality, sanitation, non-infectious environment, media exposure to women and a safe neighbourhood are transmission channels that affect child health and together they explain almost 40% of the overall income effect. One of the major implication of our findings is that any policy to increase income of poor households should be complemented with a health policy designed specifically towards children as poor households are less likely to allocate additional income to child health.     

Exploring the impact of personalized management responses on tourists’ satisfaction: A topic matching perspective

As an online reputation management tool, hotel managers increasingly rely on management responses to online reviews to improve the electronic word of mouth (eWOM). Due to the substantial heterogeneity of textual reviews with different topics, it is particularly challenging to personalize the response for customer relationship management. Based on a panel data of 500 hotels in the state of Texas collected from TripAdvisor, this study examines the influence of personalized management responses on rating increase from a topic matching perspective. The empirical results show that (1) a high level of topic matching of management response leads to an increase of hotel online rating; (2) a high valence and a large variation of existing rating weaken the positive influence of such personalized management response; (3) the influence is stronger for economy hotels compared to luxury ones. Lastly, practical implications are provided.     

《纺织设备维护技术》一体化教学中安全防范问题分析

该课程采用"一体化"教学,学生在教中学,学中做,所有的项目化任务在学院纺织实训中心实施完成。为了能使课程顺利进行,防范学生受伤害,从思想教育、安全教育、消防安全、设备安全及操作安全几个方面进行具体阐述与分析。     

Learning cycles in Bertrand competition with differentiated commodities and competing learning rules

This paper stresses the importance of heterogeneity in learning. We consider a Bertrand oligopoly with firms using either least squares learning or gradient learning for determining the price. We demonstrate that convergence properties of the rules are strongly affected by heterogeneity. In particular, gradient learning may become unstable as the number of gradient learners increases. Endogenous choice between the learning rules may induce cyclical switching. Stable gradient learning gives higher average profit than least squares learning, making firms switch to gradient learning. This can destabilize gradient learning which, because of decreasing profits, makes firms switch back to least squares learning.     

XXHA-3505曝光曲线的制作

本文介绍了使用阶梯试块制作周向X射线机曝光曲线的原理及操作步骤,并借助EXCEL作为分析工具绘制曝光曲线。     

GEFCom2012 hierarchical load forecasting: Gradient boosting machines and Gaussian processes

This report discusses methods for forecasting hourly loads of a US utility as part of the load forecasting track of the Global Energy Forecasting Competition 2012 hosted on Kaggle. The methods described (gradient boosting machines and Gaussian processes) are generic machine learning/regression algorithms, and few domain-specific adjustments were made. Despite this, the algorithms were able to produce highly competitive predictions, which can hopefully inspire more refined techniques to compete with state-of-the-art load forecasting methodologies.