铸铁的脆性分析

本文通过灰口铸铁的拉抻实验、压缩实验、扭转实验,用材料力学的分析方法,对灰口铸铁的极限应力,即拉伸极限应力σ_L,压缩极限应力σ_y 以及剪切极限应力τ的比较,得出脆性材料灰口铸铁的脆性特征为σ_L<τ<σ_y。     

Measuring abnormal daily trading volume for samples of NYSE/ASE and NASDAQ securities using parametric and nonparametric test statistics

We extend prior research on the empirical properties of daily trading volume and methods to detect abnormal trading volume in two ways. We compare the performance of a nonparametric test statistic with the parametric test statistic used in prior research and we study samples of NASDAQ securities as well as samples of NYSE/ASE securities. Prior research has focused exclusively on NYSE securities. We find the nonparametric test statistic is more powerful in detecting abnormal trading volume than the parametric test statistic in both samples of NYSE/ASE and NASDAQ securities. We also document that abnormal trading volume will be detected more often in samples of NYSE/ASE securities compared to NASDAQ securities.     

价值系统的模块化与价值转移

“价值”是一个极具争议且令人富于联想的词汇。在最近的文献中,涉及产品价值的研究多数是从企业生产、经营和管理的角度展开的,从消费者层面系统研究产品价值问题的著述并不多见。基于此,本文试图从消费者层面挖掘产品价值的基本内涵,通过对消费者需求的剖析,揭示出产品的价值形成、价值测试以及价值结构的基本关系;进而利用模块化的基本原理阐释了价值系统的模块化结构;在此基础上,厘清了产品价值系统的三类价值转移问题。     

浅析油气井用电雷管监督检验方案

对油气井用电雷管验收检验方案和产品监督检验方案进行了对比分析，发现了验收检验方案在油田监督抽查检验工作中的缺陷，参照有关标准重新确定了监督抽查检验方案。     

运用治国方略精神指导财政工作

我国在20世纪90年代提出依法治国和以德治国相结合的治国方略,本文在分析了我国治国战略的历史渊源和时代特征的基础上,提出应该运用治国方略的精神指导财政工作.     

The Importance of taste in experimental auctions: consumers’ valuation of calorie and sweetener labeling of soft drinks

A majority of purchases that consumers make are classified as repeat purchases. One of the main reasons why consumers make repeat food purchases is the food's taste. Therefore, we examined the importance of including taste testing in nonhypothetical experimental auctions. Specifically, we used two experiments to determine consumers’ willingness to pay for soft drinks labeled with different calorie and sweetener information. In Experiment 1, participants tasted the soft drinks prior to the bidding rounds. In Experiment 2, participants did not taste the soft drinks prior to the bidding rounds. Bidding behavior for the soft drinks was significantly different between Experiment 1 and Experiment 2. Results suggest that including taste testing in the design of experimental auctions is important to accurately capture consumers’ willingness to pay for foods that are purchased repeatedly. Results also imply that policies aimed at combating obesity by making the calorie content of foods more visible may not produce desired outcomes.     

中国不同省份金融结构转变与产业结构升级关系的实证研究

随着我国社会主义市场经济改革的不断深入，现有金融结构已不能适应经济发展。本文从金融结构调整的角度出发，对中国较发达地区，欠发达地区以及基于全国的数据进行面板回归。通过对实证结果的分析，得出金融结构调整对产业结构调整并不是简单线性关系的结论，金融结构调整应有合理的范围，当金融结构在其范围内变化时，能够促进经济的增长，当金融结构的调整超过合理范围时，金融功能的负作用会逐渐增强，当负作用积累到一定程度，会对经济的发展起到阻碍作用，我国各省份应根据自己的实际发展情况和自然禀赋，选择合适的金融结构和经济发展模式。     

基于VAR模型的我国铜锌期货价格引导关系实证研究

铜、锌期货是大宗金属期货的重要品种，在期货投资市场上广受追捧。研究通过构建VAR模型，运用格兰杰因果检验，分析了近远月铜、锌期货价格之间相互引导关系，模型实证结论认为远月期铜、锌期货价格之间具有显著的相互引导关系，为期货市场上各类型投资者提供政策指引。     

榆林市某羊场舍饲陕北白绒山羊羔羊死亡原因研究

本文旨在研究榆林市某羊场舍饲陕北白绒山羊羔羊的死亡情况及死亡原因,为治疗和预防羊场疾病提供理论依据。本文主要采用实地考察和访谈方式,了解羊场的饲喂、管理、配种以及产羔情况,并对羊场的消毒防疫、发病症状、病理变化和羔羊死亡数量做了详细记录。经统计分析得出羔羊死亡主要原因:繁殖障碍,哺乳失常,管理不当,肺炎和痢疾等。其中肺炎占死亡总数的13.9%,痢疾占死亡总数的68.7%,繁殖障碍死亡占死亡总数的5.2%;哺乳不当弱胎饥饿占死亡总数的7.8%;管理不善及其他原因占死亡总数的3.5%。主要防治措施:以预防为主,治疗为辅,标本兼治,加强饲养管理,全群注射三联四防苗,使羔羊死亡情况得以控制。     

On the tourism-led growth hypothesis in the UAE: a bootstrap approach with leveraged adjustments

The emerging market of the UAE has chosen attracting international tourism as one of the main strategies during the recent decades in order to diversify its economy. The main goal has been to achieve sustainable growth without overreliance on the volatile oil sector. This article investigates the impact of tourism on economic performance in the UAE by using bootstrapped causality tests with leverage adjustments. The results show that the tourism-led growth hypothesis can be supported empirically. Thus, the conducted policy by the UAE government to promote international tourism for achieving economic growth might be considered as a sustainable strategy.