重大件海洋物流的典型货盘及装运方式

近年来重大件成套设备运输需求量与日俱增。越来越多的大型深海勘探开发平台及配套设备的运输、安装更使得当今国际重大件物流的发展达到了前所未有的高度。论文将重点对重大件海洋物流的主要货盘以及专业的装运方式做出归纳和分析。     

澳大利亚重载运输对我国铁路重载的借鉴

介绍了澳大利亚铁路运输概况；重点阐述了澳铁重载铁路特点，重载列车运输组织、运行计划、车站作业和货运装卸实施情况，以及机车技术与管理；提出了适合中国重载铁路运输发展的对策与建议。     

己内酰胺浓缩工艺初探

文章通过对己内酰胺精制装置改扩建项目的对比分析,探讨改用“环己酮氨肟化技术”后,己内酰胺浓缩部分采用新工艺去杂的可能性,提出适合新技术条件下的己内酰胺浓缩工艺,并运用流程模拟软件“ASPEN”对新老工艺进行模拟计算,分析新工艺去除杂质的可行性。     

利用GARCH-M类模型和极值理论对上证综指的研究

金融时间序列具有分布的厚尾性、波动的集聚性等特征,传统的方法难以准确的度量其风险。文中运用一种新的估计VaR和ES的方法,即采取两阶段法。首先用GARCH-M类模型(GARCH-M、EGARCH-M和TGARCH-M)拟和原始收益率数据,得到残差序列;第二步用极值分析的方法分析的尾部,最后得到收益率序列的动态VaR和ES。最后对三个模型的计算结果进行比较。     

污泥资源化利用标准发展趋势探讨

对比各种污泥处理处置方式,污泥资源化利用是有巨大发展前途的一种,是提高污泥资源化水平、促进循环经济和可持续发展、建立节约型社会的有效手段。通过对现行污泥利用标准的分析和与国外相关法规及标准的对比,结合我国污泥的产生、理化性质等特征,讨论了现行标准存在的不足,探讨了未来的发展趋势。     

重新重工业化与振兴老工业基地

由于多方面因素的决定,中国走了一条先重工业、后轻工业、再重工业的工业发展道路,现在正进入一个重新重工业化的阶段,带来了经济发展的新机遇.重新重工业化的契机和良好的工业基础决定了老工业基地的振兴是必要的,也是可能的.振兴老工业基地的重点,应是发展拥有比较优势的重工业;振兴老工业基地的关键是实施产业集群战略,发展重工业产业集群.     

大秦线增加资本投入提高运输密度的分析

资本投入对产出数量起决定性作用。通过对大秦线的资本投入对运量增加的影响情况进行分析,说明加强影响列车质量和密度相关设施的资本投入,对提高产出起到重要作用。同时指出对投向大秦线的资本,应向发展重载技术方面倾斜,能对大秦线运输能力的提高起持续性影响作用。     

Sim-heuristics low-carbon technologies’ selection framework for reducing costs and carbon emissions of heavy goods vehicles

ABSTRACT

UK logistics fleets face increasing competitive pressures due to volatile fuel prices and the small profit margins in the industry. By reducing fuel consumption, operational costs and carbon emissions can be reduced. While there are a number of technologies that can reduce fuel consumption, it is often difficult for logistics companies to identify which would be the most beneficial to adopt over the medium and long terms. With a myriad of possible technology combinations, optimising the vehicle specification for specific duty cycles requires a robust decision-making framework. This paper combines simulated truck and delivery routes with a metaheuristic evolutionary algorithm to select the optimal combination of low-carbon technologies that minimise the greenhouse gas emissions of long-haul heavy goods vehicles during their lifetime cost. The framework presented is applicable to other vehicles, including road haulage, waste collection fleets and buses by using tailored parameters in the heuristics model.     

Expected shortfall estimation for apparently infinite-mean models of operational risk

Statistical analyses on actual data depict operational risk as an extremely heavy-tailed phenomenon, able to generate losses so extreme as to suggest the use of infinite-mean models. But no loss can actually destroy more than the entire value of a bank or of a company, and this upper bound should be considered when dealing with tail-risk assessment. Introducing what we call the dual distribution, we show how to deal with heavy-tailed phenomena with a remote yet finite upper bound. We provide methods to compute relevant tail quantities such as the Expected Shortfall, which is not available under infinite-mean models, allowing adequate provisioning and capital allocation. This also permits a measurement of fragility. The main difference between our approach and a simple truncation is in the smoothness of the transformation between the original and the dual distribution. Our methodology is useful with apparently infinite-mean phenomena, as in the case of operational risk, but it can be applied in all those situations involving extreme fat tails and bounded support.     

悬浮床加氢裂化工艺技术经济分析

介绍了重油悬浮床加氢裂化工艺的最新发展，对国内新开发的悬浮床加氢裂化工艺特点作了介绍。并将悬浮床加氢和三种重油轻质化工艺——固定床加氢、延迟焦化、重油催化裂化在技术经济上作了分析对比。在原油品质越来越差的今天，针对劣质重油而开发的的悬浮床加氢裂化工艺具有非常广阔的应用前景。