跨境供应链网络海外仓的鲁棒性选址模型及算法

新经济形态下，全球政治、经济形势瞬息万变，多种人为和自然因素导致商业供应链的生存环境日益严峻. 跨境供应链网络作为典型的时效性和运营环境等都具有极大不确定性的复杂网络，研究其鲁棒性问题具有一定的理论意义和实际应用场景. 首先阐明了跨境供应链网络的内涵，认为海外仓的选址优化是控制网络鲁棒性的重要手段；随后基于最小最大后悔值构建了海外仓的鲁棒性选址模型，利用情景松弛算法对模型进行求解. 算例分析结果证明，所构建的海外仓鲁棒性选址模型及算法适用于跨境供应链网络情景.     

Simulation-based severe weather-induced container terminal economic loss estimation

Container terminals play a critical role in maritime supply chains. However, they show vulnerabilities to severe weather events due to the sea–land interface locations. Previous severe weather risk analysis focused more on larger assessment units, such as regions and cities. Limited studies assessed severe weather risks on a smaller scale of seaports. This paper aims to propose a severe weather-induced container terminal loss estimation framework. Based on a container terminal operation simulation model, monthly average loss and single event-induced loss are obtained by using historical hazard records and terminal operation records as model inputs. By studying the Port of Shenzhen as the case study, we find that the fog events in March lead to the longest monthly port downtime and the highest monthly severe weather-induced economic losses in the studied port. The monthly average loss is estimated to be 30 million USD, accounting for 20% of the intact income. The worst-case scenario is found to be a red-signal typhoon attack which results in nearly 20% decrease in the month’s income. The results provide useful references for various container terminal stakeholders in severe weather risk management.     

基于攻击过程的入侵预警技术研究

入侵检测技术作为一种重要的网络安全技术,得到广泛应用和深入研究。为对入侵行为的未来趋势有效预测,以尽可能减小损失,探寻一种更为有效的入侵预警方法,成为信息安全领域的研究热点。从警报数据聚合处理的角度,提出了基于攻击过程的预警策略,并在详细介绍该算法的基础上,基于Linux系统,用C语言实现了该算法。     

情景分析法在交通规划中的应用研究

运用情景分析法,综合考虑影响交通发展的5个主要因素,结合专家群体的知识与实际数据资料、各种信息与计算机技术以及数学模型与决策者的经验智慧,依次得到     

MAPPING EPITOPES OF HUMAN PAPILLOMAVIRUS TYPE 16 L1 PROTEIN WITH A PHAGE DISPLAY EPITOPE LIBRARY

Theinfectionofhumanpapillomavirus(HPV)isakindofcommonsexuallytransmitteddiseases.Thehigh-riskgroupHPV,especiallyHPV16iscolselyassociatedwithhumancervicalcancer,anditwasindicatedasaninitiationfactorofcervicalcancertl].HPV16FIgenelocatedinlateopenreadingframesoftheviralgenomeencodesthemajorcoatprotein,LIprotein,whichcouldassembleintoviruslikeparticles(VLP)aloneintheinfectiousnucleit23.AbatchofevidencesshowedthattheLIproteincouldinduceantibodieswithhightiterinthehostandtheantibodiesmightp…     

COMTICS系统结构研究

COMTICS(Communication Oriented Motor Transport Information and ControlSystem)系统是面向汽车运输企业的管理信息系统。人们按企业活动的类型可将信息系统划分为四种类型的子系统。而从组织职能出发,则可把管理信息系统看成是完成不同职能的各个子系统的联合,每一个职能子系统都包含四种类型的活动。根据汽车运输企业生产经营特点,描述一种面向该类型企业的管理信息系统结构即COMTICS系统结构。     

千呼万唤始出来的图书资料一体化分类法——谈科研图书馆对《中国图书馆分类法》(第四版)的使用

介绍了中图法第四版较前几版中图法的优越 ,并以交通系统图书资料管理为例 ,指出了在使用中应注意的几个方面。     

葎草花粉cDNA表达文库的构建和初步鉴定

目的构建葎草花粉cDNA表达文库,为进一步筛选葎草花粉的主要致敏蛋白组分、制备重组变应原奠定基础。方法采集新鲜葎草花粉,过筛后液氮保存,利用Trizol法抽提葎草花粉总RNA,纯化后PCR法反转录合成cDNA。经SfiⅠ酶切,过凝胶柱层析,去除小于400 bp的片断,收集大于400 bp的cDNA片段,加工后与λTripIEx2连接,文库体外包装,取出一小部分感染宿主菌XL1-Blue MRF,检测文库容量;PCR分析插入的cDNA片段的大小及多样性。结果成功构建一个含有5×105重组子的葎草花粉表达文库,重组率为90%,平均插入片段长度约为1.02 kb。结论所建文库容量及插入片段大小合适,适用于筛选克隆的目的cDNA。     

Measuring the influence of bus service quality on the perception of users

Encouraging the use of public transport is a key policy goal in many countries. Therefore, public transport should offer the level of quality that accommodates the demands of current users, and importantly, the desires of potential users. This study investigates the influence of the perceived quality of bus service on the perception of both current and potential users. The study draws upon data from 512 questionnaires distributed across Belfast City in the UK. The study utilises a binary logistic regression model to quantify the relationships between the perceived quality of 29 bus indicators (independent) and the perceptions of users towards the overall bus service (dependent). Eleven significant indicators are reported to have significant influence on the perception of users. These indicators are utilised to propose scenarios for optimising the quality of bus service with the perceptions of current and potential users.