The catering industry as a source of campylobacteriosis in Europe—A review

Thermotolerant species of Campylobacter are the causative agents of the human illness called campylobacteriosis. The number of confirmed cases of human campylobacteriosis in the European Union followed a significant increasing trend in the period 2008–2012, and continued to be the most commonly reported zoonosis with 214,779 confirmed cases in 2013; the notification of human campylobacteriosis is today mandatory in most European Member States. Recent reports from the European Food Safety Authority have identified catering (catering services, restaurants, hotels, pubs, bars) as the most frequently reported setting for Campylobacter infection (EFSA and ECDC, 2015). As can be evinced from the analysis of the scientific literature, the quality of raw meat has been identified as a parameter of fundamental importance, but the contribution of incorrect food handling procedures is by no means negligible. In fact, poor hygiene during poultry meat preparation as well as inadequate cooking and cross-contamination between raw meat and ready-to-eat food were found to be the main causes for the spread of campylobacteriosis related to the catering industry.     

突发事件与危机管理——从汶川大地震看城市公用事业安全

本文结合中国四川汶川大地震,重点阐述了突发事件和危机管理的重要性以及城市公用事业安全的重要作用,指出了我国城市公用事业危机管理方面存在的问题,提出了当前应该突出抓好的有关工作的建议.     

市盈率在股票投资分析中的适用性研究

在股票投资分析中,市盈率可以用来判断和比较股票的投资价值,又可以用来判断和比较股票的安全边际。一般而言,相比于高市盈率股票,市盈率较低的股票具有较高的投资价值和安全边际。同时,市盈率是一个可以动态变化的分析指标,它与股票的盈利能力密切相关,每股收益的增减会导致市盈率的变化。投资者不能简单地根据市盈率的高低进行股票投资,还必须深入分析股票的基本面情况,避免误入低市盈率股票投资的"便宜货陷阱"。     

安全工程专业应用型高级技术人才培养模式探索

安全工程专业人才的培养应该是培养能适应现代科学技术飞速发展和社会经济日益变化。本文针对煤炭行业特点,以及新形势下煤炭行业人才培养的需求,结合辽宁石油化工大学顺华能源学院自身实际情况,提出优化学科结构,改革人才培养模式,加强课程体系的建设,加强实践教学环节,从而培养安全专业应用型高级技术人才。     

Safety performance differences between unionized and non-union motor carriers

This paper analyzes the safety performance differences between union and non-union motor carriers. Based primarily on the safety and health provisions of a national agreement between the International Brotherhood of Teamsters and a major unionized motor carrier, a hypothesis is developed that union carriers have a positive safety impact. The hypothesis is tested using safety performance data. Key findings are that union membership has a statistically significant positive impact on both driver and vehicle safety performance. Union membership results in significantly fewer crashes as well.     

美国利率市场化改革对银行业的影响

本文通过对20世纪80年代美国利率市场化改革背景和过程的分析,重点考察了其对银行资产负债业务、向中间业务转型以及行业集中度的影响。本文研究表明,利率市场化导致存贷利差呈缩窄趋势,但由于贷款占资产比重的提升,改革完成初期对银行净息差冲击较小。但随着利率市场化改革的完善和金融脱媒的深化,净息差仍呈现下降趋势。此外,利率市场化对银行向中间业务转型有明显的促进作用,加强了行业竞争,并提升了行业集中度。     

日本食品安全委员会的运行机制及其对我国的启示

日本食品安全委员会是食品安全法律理念与制度变迁的产物,其运行机制值得刚刚起步的我国食品安全委员会借鉴。日本食品安全委员会的风险评估、风险沟通和应急反应机制有效运行并产生了良好的实际效果,但仍存在缺乏权威性、缺乏事故后的有效应对、专业资源不足和消费者参与较少等不足。我国应当加强食品安全委员会的独立性,引入风险评估机制,建立风险沟通网络,提高危机应对效率,使我国食品安全委员会在食品安全监管中发挥更大的作用。     

对上市公司控股股东侵占中小股东利益的探讨

近年来，我国上市公司控股股东侵占中小股东利益的事件频频发生。控股股东作为上市公司的所有，是通过直接侵占上市公司利益进而间接侵占中小股东利益的。既然控股股东也是公司的所有，利益也与公司利益紧密相关，因而，这种侵占行为也必然会给自己造成损失。那么，控股股东侵占上市公司利益(进而侵占中小股东利益)的动机又是什么?本试图就控股股东的侵占动机、强烈程度进行量的度量、分析，提出保护中小股东利益的建议。     

Video-based pedestrian grouping model considering long-span space in a big hall

Pedestrian group detection is a challenging but significant issue in pedestrian flow control and public safety management. To address the issue that most conventional pedestrian grouping models (PGMs) can only identify a pedestrian group at a limited distance of less than 2 m, this study extended the pedestrian distance constraint of conventional PGMs with a reconstruction of the normal group detection criterion and development of a novel group detection criterion suitable for long-span space. To measure the movement behavior similarity with normal distance, five necessary constraints: velocity difference, moving direction offset, distance limitation, distance fluctuation, and group-keeping duration were studied quantitatively to form the criterion to detect normal groups. Meanwhile, a long-span group detection criterion was proposed with extended distance and direction consistency constraints. Therefore, this study proposed an improved PGM that considers long-span spaces (PGMLS). In the PGMLS workflow, the MMTrack algorithm was used to obtain pedestrian trajectories. A difference measurement method based on sequential pattern analysis (SPA) was adopted to analyze the velocity similarity of pedestrians. To validate the proposed grouping model, experiments based on pedestrian movement videos in the exit hall of the Shanghai Hongqiao International Airport were conducted. The results indicate that the proposed model can detect both normal and widely separated pedestrian groups, with a long span range of 2–12 m.     

几内亚马西铁路限制坡度方案研究

几内亚马西铁路是服务于西芒杜矿区企业铁矿石产品的铁路外运的重要基础设施,其限制坡度的确定是影响线路走向的主要技术标准,同时对工程投资、建设规模、运输能力、运营效果及行车安全性等至关重要。在阐述马西铁路现状的基础上,对马西铁路限制坡度取值范围进行估算,提出6‰/9‰均衡坡方案、6‰/13‰均衡坡方案、9‰/13‰均衡坡方案3种限制坡度方案,分析影响马西铁路限制坡度选择的主要因素,并通过车流特点、沿线地形地貌、机车类型、牵引质量、工程适应性及投资等方面对不同坡度方案进行分析比选,在满足研究年度运输需求前提下采用综合费用现值法,推荐采用6‰/9‰分方向选择限制坡度的均衡坡方案,研究成果对国内外货运铁路限制坡度的选择具有一定的指导和借鉴意义。