建立计算机管理系统 提高机车检修质量

山海关机务段针对传统质量管理手段和机车检修方法存在管理方法落后、检测手段落后和考核机制滞后等弊端,建立机车检修质量计算机管理系统。该系统具有收集处理检修质量信息,提供质量分析、定责、考核依据,强化配件检修质量及检修质量控制等功能,促进了机车质量稳步提高,为旅客列车安全正点运行提供了有力保障,为运输畅通和增运增收发挥了重要作用。     

烧结模糊控制系统的设计与实现

设计了一个烧结模糊控制系统，进而构建了一个基于模糊控制的自适应脉宽控制器，对煤气阀、换向阀开关时间进行控制；利用模糊控制器的模糊推理能力来实现煤气阀门开度在线调整，以达到优化控制的目的。运行结果表明，这种控制器与常规比值控制器相比可以取得较好的控制效果。     

Contract modifications and the basis behavior of live cattle futures

The purpose of this study was to assess the basis behavior of the Live Cattle Futures contract at the Chicago Mercantile Exchange (CME) before and after the 1995 contract changes. Additionally, an alternative method of basis calculation utilizing weighted mean futures prices versus settlement futures prices was compared to determine which method provides a better representation of the basis level. Within a regression model with heteroskedascity error framework, we found that the level of nearby basis in the period after June 1995 has shifted lower and the average monthly open interest of net commercial long positions has substantially increased after the contract modifications. These empirical results are consistent with the notion that more long activity entered the market in response to the contract modifications. Additionally, an alternative (new) measure of basis calculation (cash price minus weighted mean futures price) produced similar results to two other commonly used measures. In conclusion, the 1995 contract changes have neither increased nor decreased the volatility of live cattle basis. © 2004 Wiley Periodicals, Inc. Jrl Fut Mark 24:557–590, 2004     

Effectiveness and Effects of China’s Capital Controls

I. IntroductionNations at every stage of development and in every region of the world are more closelylinked through trade in goods and services, through flows of funds and investments ineach others’ economies than ever before. But in sharp contrast to more and more nationsloosening restrictions on international trade, controls over capital flows are still substantialnearly everywhere except in the most developed economies. This is certainly the case inChina, where restrictions on movements …     

To Earnestly Protect the Exclusive Right to Use a Registered Trademark and to Promote the Economic Development

State Administration for Industry and Commerce (SAIC) decided to launch the campaign to better protect the exclusive right to use a registered trademark and released "Action Plan for the Campaign of Protection of the Exclusive Right to Use a Registered Trademark".     

跆拳"武"动的春天

他们外表看似冷静,内心却充满激情。穿上帅气的道服,不管什么职业,什么性别、什么年龄的你,身上所有的社会符号都将消失,只有一个纯粹的、神采奕奕的你,传递出一种精神……     

迷上酒吧的理由

有人比喻酒吧是水泥城市的天窗，“人们迫不及待地探出头，试图逃脱逼仄的空间，哪怕得到片刻的欢娱。”而在成都，在迷上——一个酒吧，富有想象力的名字将欢娱变成了前戏：人们夜夜笙歌，长久缠绵悱恻。[编者按]