明清时期汉水下游地区的地理环境与堤防管理制度

明清时期国家对于汉水下游的水利管理制度经历一个变迁的过程,与这一区域的水利问题的日益突出密切相关,垸田的发展以及带来的问题是主要的因素。钟祥至沙洋的汉江干堤极易溃决,并且关系到整个下游地区的安全,因此在人力组织、资金筹集、岁修维护上,国家的政策表现出明显的倾斜性,相对于沙洋以下的区域,给予了充分的重视。沙洋以下,天门、潜江、沔阳等州县所在区域主要以垸田为主,国家将这一区域的堤防修筑与维护主要交由地方来进行。垸堤岁修维护采取堤甲制的组织形式,由垸民完成,一方面没有固定的资金,另一方面在正常年景之下,垸民可以获得基本的物质生存,因此垸堤的维护面临相当的困难。     

中国特色社会主义理论体系的鲜明特性

党的十七大在理论上的最大亮点就是提出了中国特色社会主义理论体系。这个理论体系,是党最可宝贵的政治和精神财富,是全国各族人民共同奋斗的思想基础,是马克思主义中国化的最新成果,具有极其鲜明的科学性、系统性、时代性、包容性、开放性、实践性等特性。     

“伯”、“仲”、“叔”、“季”与西周晋侯世系

近年发掘的北赵晋国墓地为研究西周考古、历史等提供了极其宝贵的资料。该墓地中出土的大量铜器,引起了专家学者的广泛关注,研究成果涵盖很多方面,但仍有若干问题悬而未决,北赵墓地中墓主身份问题     

关于控制我国行政成本的思考

控制行政成本,提高行政效率,是实现行政管理体制改革的核心问题。要降低行政成本,必须注重行政成本宣传,强化行政成本意识;转变政府职能,控制政府机构规模;优化政府管理流程,提高工作效率;控制公务人员膨胀,规范职务消费行为;建立科学决策机制,提高领导决策水平;增强财政预算的刚性约束,健全财政预算管理机制;改革行政部门业绩考核方式,建立科学的绩效评估制度;健全社会监管体系,加大社会监督力度。     

发挥媒体对建设社会主义核心价值体系的促进作用

建设社会主义核心价值体系,新闻媒体担负着重要责任。新闻媒体及其工作者要加深对社会主义核心价值体系的理解,准确把握其丰富内涵和基本要求,把社会主义核心价值体系的要求贯穿到宣传报道之中,在建设社会主义核心价值体系中发挥积极作用。     

改革人事档案“终身”制之我见

随着社会主义市场经济的发展和干部人事制度的改革,人事档案管理的“终身”制已越来越不适应新形势发展的需要。对此,笔者建议,可以借鉴法国《档案法》的有关规定,允许人事档案有一定的封闭期。同时,建立人事档案的多种形式,即一人一生可以只有一份人事档案,也可以有多份人事档案,也可以没有人事档案。     

从出土弩机铭文看三国孙吴世袭领兵制度

本结合有关史实,分析了孙吴弩机铭,论述了孙吴领兵制特点,并指出吴弩的督造。     

江苏考古工作世纪之初的思考

20世纪江苏考古学取得了一系列骄人的业绩,进入新世纪江苏考古的体制建设、学科建设、人才建设以及在工作中的课题意识：团结协作精神等等都面临着如何与时俱进的新挑战。     

The significance of pockmarks to understanding fluid flow processes and geohazards

Underwater gas and liquid escape from the seafloor has long been treated as a mere curiosity. It was only after the advent of the side‐scan sonar and the subsequent discovery of pockmarks that the scale of fluid escape and the moon‐like terrain on parts of the ocean floor became generally known. Today, pockmarks ranging in size from the ‘unit pockmark’ (1–10 m wide, < 0.6 m deep) to the normal pockmark (10–700 m wide, up to 45 m deep) are known to occur in most seas, oceans, lakes and in many diverse geological settings. In addition to indicating areas of the seabed that are ‘hydraulically active’, pockmarks are known to occur on continental slopes with gas hydrates and in association with slides and slumps. However, possibly their potentially greatest significance is as an indicator of deep fluid pressure build‐up prior to earthquakes. Whereas only a few locations containing active (bubbling) pockmarks are known, those that become active a few days prior to major earthquakes may be important precursors that have been overlooked. Pockmark fields and individual pockmarks need to be instrumented with temperature and pressure sensors, and monitoring should continue over years. The scale of such research calls for a multinational project in several pockmark fields in various geological settings.     

Fluid flow and stability of the US continental slope offshore New Jersey from the Pleistocene to the present

We predict that portions of the New Jersey continental slope were unstable approximately 0.5 million years ago. This instability was caused by rapid sediment loading during a Pleistocene sea‐level lowstand and by flow focusing in underlying, permeable Miocene strata. The simulated instability is consistent with soft‐sediment deformation and small slumps in Pleistocene strata of the Hudson Apron. Stability of the New Jersey margin has increased since 0.3 Ma because sedimentation rate has decreased. Today, the modelled factor of safety (FS) for the upper slope is approximately 1.5 whereas in the lower slope it exceeds 3. We predict that sedimentation rate is a dominant factor on slope stability. When rapid and asymmetric loading of a highly permeable sedimentary layer occurs, the location of instability can shift seaward to regions where sedimentation rates are low. Stability calculations use pressures and effective stresses predicted by a coupled sedimentation‐fluid flow model. This hydrodynamic analysis demonstrates how the interplay of sedimentation and fluid migration affects the distribution, timing, and size of sedimentary failures.