Impacts of bus holding strategy on the performance and pollutant emissions of a two-lane mixed traffic system

This paper investigates the impacts of a bus holding strategy on the mutual interference between buses and passenger cars in a non-dedicated bus route,as well as the impacts on the characteristics of pollutant emissions of passenger cars.The dynamic behaviors of these two types of vehicles are described using cellular automata(CA)models under open boundary conditions.Numerical simulations are carried out to obtain the phase diagrams of the bus system and the trajectories of buses and passenger cars before and after the implementation of the bus holding strategy under different probabilities of passenger cars entering a two-lane mixed traffic system.Then,we analyze the flow rate,satisfaction rate,and pollutant emission rates of passenger cars together with the performance of a mixed traffic system.The results show that the bus holding strategy can effectively alleviate bus bunching,whereas it has no significant impact on the flow rate and pollutant emission rates of passenger cars;the flow rate,satisfaction rate,and pollutant emission rates of passenger cars for either the traffic system or for each lane are influenced by the bus departure interval and the number of passengers arriving at bus stops.

新课程理念下的初中政治教学模式

新课程标准提出了“以学生发展为本”的核心理念,这与传统的课堂教学重视知识传授相比,是一大跨跃。以这一新理念为灵魂的思想政治新教材要求我们必须改变传统的思想政治教学,构建适应新课程理念的教学模式,树立与新课程理念相适应的发展性教学观念。从开始新课程培训到现在,我们逐步走进了新课程。我作为在政治教学第一线的政治教师就新课改下的初中政治教学谈几点看法。

初中思想品德课快乐学习初探

《庄子》中有一则故事并不陌生：魏王送给惠施和庄子一些葫芦种子让他们种，谁的葫芦大就奖赏谁。惠施非常用心，天天施肥、除草。庄子并不这样做，只是经常去看看。过了很久，惠施的葫芦苗一颗也没有成活，而庄子的葫芦苗却长得格外好。惠施很奇怪，请教庄子：“为什么我那么用心栽培，所有的葫芦苗都死光了，而你从来都不好好管理，葫芦苗却长得那么好呢？”庄子笑着回答：“你错了，我也在用心管理，只不过方法不同罢了。我常去地里转转，看看葫芦苗有什么需要，是不是快乐。而你却不管他们的感受，拼命地施肥、浇水，不用自然之法，怎能得到万物的拥戴呢？”这个故事启示我们，我们在讲课时，一定要关注学生的需要，看看学生对老师讲课方式、讲课内容是否感兴趣，学生是否有快乐的情绪体验。