刘明：如何构建云南公共航空运输体系 云南机场集团总裁刘明出席2008中国民航发展论坛并发表主题演讲

5月中旬,2008中国民航发展论坛在北京香格里拉饭店隆重开幕。云南机场集团总裁刘明出席论坛并发表演讲。此次论坛的主题是"新趋势、新理念。

科学和谐率先发展 共建共享品质之城——热烈祝贺市十一届人大三次会议胜利召开

春满杭城,万象更新。2月26日,全市人民热切关注的市十一届人大三次会议胜利召开。会上,市长蔡奇代表杭州市人民政府作工作报告。报告回顾总结了过去一年我市经济社会发展情况及政府所做的工作,对当前面临的形势和任务作了深入分析,提出了2008年经济社会发展的指导思想、预期目标和政府重点工作。

Prediction of Repair and Maintenance Costs of Two-wheel Drive Tractors in Iran

Predicting of repair and maintenance （R＆M） costs of tractors in any mechanized farm is necessary for owners and managers to obtain information on overall costs and to control financial balance and production economy. In this context a study was conducted to predict accumulated R＆M costs （Y） of two-wheel drive （2WD） tractors based on accumulated usage hours （X） in Misagh-e-Sabz Agribusiness Company in Iran. Recorded data of the company were used to determine regression models for predicting accumulated R＆M costs （as percentage of initial purchase price） based on accumulated usage hours. The statistical results of the study indicated that in order to predict accumulated R＆M costs of 2WD tractors with accumulated usage hours of 2260 h or less the power regression model Y=0.013 （X/100）1.677 with R2=0.976, and to predict accumulated R＆M costs of 2WD tractors with accumulated usage hours of 2260 h or more the polynomial regression model Y=0.004 （X/100）2-0.181 （X/1 00）＋4.373 with R2=0.998 can be strongly suggested.

深入解放思想 努力建设富裕文明城区

中心城区的人口最集中、基础设施最完善、教育资源最丰富,各种生产要素相对集中,最有发展潜力。中心城区在新的历史起点上要实现跨越发展,必须要解放思想,进一步解决为什么要解放思想、解放什么思想和如何解放思想三个问题,推动城区经济社会进入科学发展的轨道,从而建成富裕文明城区。