A hybrid parallel genetic algorithm for yard crane scheduling

This paper aims at postulating a novel strategy in terms of yard crane scheduling. In this study, a dynamic scheduling model using objective programming for yard cranes is initially developed based on rolling-horizon approach. To resolve the NP-complete problem regarding the yard crane scheduling, a hybrid algorithm, which employs heuristic rules and parallel genetic algorithm (PGA), is then employed. Then a simulation model is developed for evaluating this approach. Finally, numerical experiments on a specific container terminal yard are used for system illustration. Computational results suggest that the proposed method is able to solve the problem efficiently.     

人工神经网络及其在盲信号处理中的应用

文章讲述了人工神经网络基本知识、特点及几种典型神经网络,介绍了盲信号处理的基本概念,最后进一步指出了人工神经网络在盲信号处理中的优势。     

Where the Automobile in China Should Head for --In the perspective of allemative energy power

In the recent auto world, if we make a rank, the hottest word is possibly granted to ＂the alternative energy car＂. It is hot not by fads but by trend, a trend orienting the future of the auto industry. To fuel the cars with alternative energy other than the conventional fossil fuel has been the common concern of the countries all over the world. One big highlight of the upcoming new version of China＇s Policy of Automotive Industrial Development is the new added content concerning alternative energy automobile development revealed by the Ministry of Industry and Information Technology in China a few days ago. Though the number of the cars powered by the alternative energy running on the road is still quite limited, it has become a must for the development of this industry in long run.     

即墨供电“光明无限”的精彩之路

这些年,即墨供电公司每时每刻都在演绎着"光明无限"的传奇.当我们翻看即墨供电的发展历程时,会发现它走过的每一个脚印都掷地有声.     

云南拾翠

“天下翡翠出云南”，说起云南，就不能不提到翡翠。自古以来，一件件翡翠玉器通过云南进入中原，并流向海外，形成了著名的翡翠之路。作为上苍赐予的玉之精灵，翡翠凝聚天地元气，吸收万物精华所成，在经过亿万年的尘封后洗尽铅华，终于来到凡间寻觅有缘人……     

我国信托业市场结构与绩效关系研究

我国信托业的经营绩效与市场份额之间存在显著的正相关关系，与市场集中度存在弱性的负相关关系。现阶段我国信托市场还处于垄断程度较低的低中占寡型市场，信托业绩效水平的提升有赖于市场份额、营业费用率、资产负债率等影响因素的进一步优化。     

Modeling green vehicle adoption: An integrated approach for policy evaluation

This article employs an integrated discrete-continuous car ownership model to jointly forecast households’ future preferences on vehicle type, quantity and use, and to estimate greenhouse gas (GHG) emissions. The model system is estimated on a dataset collected from a web-based stated preference survey conducted in Maryland in 2014. The data contain vehicle purchase decisions and sociodemographic information of 456 households who were requested to state their future preferences over a 9-year period (2014–2022). In each time period, a respondent is faced to four alternatives that include the current vehicle, a new gasoline vehicle, a new hybrid electric vehicle, and a new battery electric vehicle. Intertemporal choices between conventional and “green” vehicles such as hybrid and electric cars capture dynamics in vehicle purchase decisions. Short run and medium-long run situations were predicted and compared based on the first 4-year data and the entire 9-year data of the dynamic panel. Vehicle GHG emissions were calculated correspondingly. We find the introduction of “green” vehicles makes a positive impact on car ownership and use, especially in a medium-long run. Two “green” taxation policies, gasoline tax and ownership tax, were proposed and their impact on vehicle use and emission reductions was evaluated. Results indicate that: (a) gasoline tax is a more effective way to reduce vehicle miles traveled and GHG emissions and (b) gasoline tax makes a higher impact on car use and emission reductions in the medium-long run, while ownership tax makes a higher impact in the short run.     

河山尽幻影 神仙了无痕——记著名画家李桃修

作画是一项非常艰苦的劳动,必须像＂苦行僧＂那样耐得住寂寞,必须几十年如一日地坚持下来。——画家李桃修语     

高校在大学生人文素养培养中的定位与作用

大学生的人文素养不仅关系到大学生自身能否全面发展成为合格人才,更直接关系到国家和民族的未来。针对当代大学生人文素养逐渐缺失的现状,通过分析大学生所处社会及成长环境,教育环境及社会快速发展的大背景,探讨了高校在大学生人文素养培养过程中的定位及作用。     

减脂、减糖与科学瘦身

科学瘦身不等于不吃,是合理的减掉脂肪和糖类的摄入,同时视个人身体状况循序渐进的增加体育运动,重视运动生热效应,燃烧脂肪,增加能量消耗,还要按照人体生物钟的运行规律优化睡眠,休息好。