霍金的意义:上帝、外星人和世界的真实性

本文从新的视角考察了霍金最近发表的两条引起媒体极大兴趣的言论:关于宇宙是不是上帝创造的,关于我们要不要和外星文明交往,以及他另一个不太受关注的依赖模型的实在论观点,得出结论认为霍金在这些重要问题上其实并没有提供新的立场,只是完成了站队,但由于他的科学之神的传奇身份和影响,霍金却能通过老生常谈为人类做出新的贡献。本文还认为,霍金的新作《大设计》可能是他最后的学术遗嘱。     

外倾式非对称曲线拱桥力学特性分析

针对一座外倾式非对称钢箱拱桥,通过利用桥梁结构专业软件Midas/civil建立其空间杆系有限元模型进行整体受力性能分析,探讨主要受力结构拱肋、吊杆以及钢箱主梁的力学特点;并通过外倾角的改变研究分析了吊杆内力随拱肋外倾角改变的变化规律,对于完善该类异型拱桥的设计理论、工程施工,确保结构安全、设计合理等方面都有一定的参考价值。     

广东地区高校动漫专业就业现状分析简

近年来动漫产业随着国家政策支持而迅速发展，动漫专业成为高校热门专业，但是动画专业却登上了就业的“红牌榜”。作者调研了广东地区十二所高校和七家动漫企业，采用调查法、文献研究法、数据统计法对就业现状进行分析，寻找原因和对策，为高校动漫专业的教学和就业提供参考。     

公路建设的资金运作模式

公路建设的投融资正在向多渠道发展.在介绍我国公路建设现状的基础上,阐述公路建设资金的主要来源方式,探讨当前投融资体制下公路建设面临的主要问题,指出要建立合理有效的公路市场融资机制,政府还要进一步考虑如何更好地把非公有资本导入公路建设领域.     

南宁枢纽高铁信号的过渡开通

按照高铁联调联试和开通运营的条件要求,主要阐述了新建柳南客专和南黎铁路、南钦铁路引入南宁枢纽在未按设计全面完成的情况下进行信号过渡开通的方法和步骤.在工程部分建成的条件下实现高铁信号的联调联试和过渡开通,对高铁建设项目而言是一个值得研究探讨的课题和有益的尝试.     

On the degradation of performance for traffic networks with oblivious users

We consider the problem of characterizing user equilibria and optimal solutions for routing in a given network. We extend the known models by considering users oblivious to congestion in the following sense: While in the typical user equilibrium setting the users follow a strategy that minimizes their individual cost by taking into account the (dynamic) congestion due to the current routing pattern, an oblivious user ignores congestion altogether; instead, he or she decides his routing on the basis of cheapest routes on a network without any flow whatsoever. These cheapest routes can be, for example, the shortest paths in the network without any flow. This model tries to capture the fact that a certain percentage of travelers base their route simply on the distances they observe on a map, without thinking (or knowing, or caring) about the delays experienced on this route due to their fellow travelers. In this work we study the effect of such users using as the measure of network performance its price of anarchy, i.e., the ratio of the total latency experienced by the users (oblivious or not) at equilibrium over the social optimum.     

言息化管理在公路运输经济中的作用

公路运输行业实行信息化管理可以促进公路运输经济的进一步发展。通过对信息化管理在公路运输经济中所发挥的作用进行讨论。提出了进一步加强公路运输信息化管理的相关建议，以促进公共交通事业的发展。     

Examining the influence of firm performance on business risk-taking and the mediation effect of scale of operations in the container terminal industry

Container shipping and its related service sectors help accelerate globalization of the world economy. This industry has been experiencing rapid growth, prompting container terminal operators to increase their handling capacity in response. Providing container terminal services requires substantial capital investment in physical assets such as cargo handling facilities and information systems. On the other hand, operating container terminals is a long-term investment that typically spans several business cycles. Hence prudent asset management using appropriate tools is critical for container terminal operators to sustain their businesses. Generally, due to risk-adverseness, investors are unwilling to take more risk in their investment unless they can reap a higher return. Contrary to this argument, this study finds no direct influence of better firm performance as a proxy of higher return on business risk-taking by container terminal operators. Instead, scale of operations is positively associated with business risk-taking, suggesting that container terminal operators with a larger scale of operations are willing to take more business risk.     

兰州市五人制足球运动开展现状调查分析

本文运用文献资料法、专家访谈法、问卷调查法、数理统计法对兰州市五人制足球运动的开展规模、教练员情况、场地设施、社会参与人群状况等问题进行调查分析,提出了针对性建议,旨在为进一步推动兰州市五人制足球的健康快速发展,同时促进兰州市足球运动的普及与提高尽一份力。     

造船企业80后员工特征分析及管理方法探讨

考虑到造船企业吸纳了大量的80后员工,如何有效管理这些80后员工,发挥他们的长处,营造和谐的企业氛围,为80后员工提供更好地职业发展空间,为企业创造更大价值,成为企业管理者和人力资源部门关注的焦点,通过对80后员工所处的职业阶段特点和职业心理特征的分析,提出进行有效管理激励的思路和对策。