Corrosion environment evaluation and durability design requirements of coastal concrete bridge

依据JTg/T b07—01—2006《公路工程混凝土结构防腐技术规范》和gb/T 50476—2008《混凝土结构耐久性设计规范》,结合海南一个沿海混凝土大桥的具体环境条件和工程结构情况,对大桥所处腐蚀环境评价中环境分区、环境作用分级以及耐久性设计要求等问题进行了研究。大桥的环境作用分为一般环境、土中环境、海洋环境和滨海环境四个区域。一般环境处于海南东北部沿海腐蚀偏高范围,腐蚀性较高,分级提高加以考虑。土中环境主要由于砖红壤地质腐蚀加重的影响,在工程详细勘探和耐久性设计时给于关注。海洋环境由于海南炎热地区水温高、盐度高会加重腐蚀,耐久性设计中给于考虑。滨海环境主要考虑海洋大气影响范围扩大、影响程度增高、海水入侵和盐渍化影响会不断扩大范围和程度等,对滨海大气和滨海土壤环境的耐久性加以重视。在大桥的设计、施工的不同阶段贯彻和实施规范的技术措施是保证耐久性的关键,对特殊形式和部位的构件和结构耐久性要给于专门措施。According to JTG/T B07—01—2006"Specification for deterioration prevention of highway concrete structures"and GB/T 50476—2008"Code for durability design of concrete structures",The corrosion environmental classification,environmental action grade and durability design requirements of a coastal concrete bridge in Hainan province are researched combining the bridge environment condition and engineering structure.The environment condition of the bridge is divided into four districts:the general environment,soil environment,ocean environment and coastal environment.The general environment is placed in northeast coast of Hainan and belongs to higher corrosion scope.The corrosion is higher so the grade is exalted.The influence in soil environment mainly is the Latosols geology corrosion.at the detailed investigation and design this must pay attention.because of in the south blazing hot region,the water temperature is high and the salt degree is high so the ocean environment will aggravate corrosion,the durability design must considered.The coastal environment mainly considers the ocean atmosphere spread,increasing corrosion degree,the sea water invading and salinization.The durability of the coastal atmosphere and coastal soil environment should be attached importance to.At the different stage of bridge design and construction the specialized technique measure is the key that promises durability.The special form and the part of bridge must carry out the specialized measure

Application of the Modern Risk-oriented Audit on Steel Trading Enterprise: An Case Study

一直以来，审计风险和审计风险模式不论在审计理论还是实务界都是讨论的焦点。审计风险模式随着审计阶段的发展而进化，其在突破了一个又一个的局限后，至今发展为现代风险导向审计模式。审计师在现代风险导向审计下，同时关注重大错报风险和检查风险，以期在提高审计效率的同时达到审计目标。本文尝试从审计师审计财务报表的角度，基于现代风险导向审计模式相关理论，以华南某市国有独资钢贸企业为例，分析现代风险导向审计在钢贸企业中的应用。 根据本文所研究的问题，论文分为六个部分，结构和内容如下： 第一部分，导论。主要介绍论文的写作背景、内容与框架、研究方法及本文的创新和不足之处。 第二部分，文献综述。阐述了审计风险的...Audit risk and audit risk model is a key issue in audit theory and practice, audit risk model developed with the audit stage and finally to the modern risk-oriented audit model. The auditor tries to achieve the audit objective with efficiency, paying attention both on the material misstatement risk and detection risk when applying the modern risk-oriented audit model. The author wants to act as an...学位：工商管理硕士院系专业：管理学院_工商管理硕士(高级管理人员工商管理硕士)学号：X200915615

Fair Bandwidth Allocation in Optical Burst Switching Networks

Optical burst switching (OBS) is a promising switching technology for next-generation Internet backbone networks. One of the design challenges is how to provide fair bandwidth allocation in OBS networks; the schemes proposed for general store-and-forward IP switching networks can not be used because of the non-buffering and un-fully utilized bandwidth characteristics of OBS networks. We propose a rate fairness preemption (RFP) scheme to achieve approximately weighted max-min fair bandwidth allocation in OBS networks. We present an analysis of the burst loss probability in RFP-based OBS networks. The analysis and simulation results show that the RFP scheme provides fair bandwidth allocation in OBS network

The Progress and Situation of Extended Continental Shelf Delineation Worldwide

方银霞，国家海洋局第二海洋研究所专属经济区与大陆架研究中心研究员。尹洁，国家海洋局第二海洋研究所专属经济区与大陆架研究中心助理研究员。唐勇，国家海洋局第二海洋研究所专属经济区与大陆架研究中心研究员。李金蓉，国家海洋信息中心，助理研究员。【中文摘要】：自2001年俄罗斯率先提交划定其200海里以外大陆架外部界限的划界案以来已经15年，截至2016年6月30日，大陆架界限委员会收到的划界案总数达81个，完成审议并通过委员会建议的划界案有24个。本文系统介绍了全球外大陆架划界案提交情况、委员会对划界案的处理模式以及审议时重点关注的问题等，并从科学和法律两个角度分析了当前外大陆架划界实践的特点与未来发展趋势。因此，本文建议，我们应加大相关科学技术和法理问题研究，及时总结大陆架制度理论与实践的最新发展，以便为我国今后外大陆架划界和积极应对侵害我国海洋权益的他国划界主张提供参考和借鉴。 【Abstract】In 2001, Russia made the first submission, containing proposed outer limits of its continental shelf beyond 200 nautical miles (nm) from the base-lines from which the breadth of the territorial sea is measured, to the Commission on the Limits of the Continental Shelf (CLCS). As of 30 June 2016, the CLCS had received 81 submissions and had reviewed and released recommendations on 24 of them. After systematically outlining the situation of the submissions that have been, are being, or will be filed by States, the modes that CLCS adopts to treat submissions, and the primary issues that the CLCS examines during its consideration of submissions, this paper explores, from both scientific and legal perspectives, the features of current practice with respect to extended continental shelf delineation, as well as its development tendency.In this context, this paper suggests that greater efforts should be invested in the study of relevant scientific, technical and legal issues, and the latest developments regarding the theories and practice of the continental shelf regime should be learned and summarized in a timely manner, which could be used for reference by China in the delineation of its extended continental shelf, or when China's maritime rights and interests are undermined by other States' claims of continental shelf.本文获海洋公益性行业科研专项经费资助项目（编号：201205003）和国家自然科学基金项目（编号：41476048 和41401142）资助