Middle and late Pleistocene glaciations in the Campo Felice Basin (central Apennines, Italy)

The present paper refers to research conducted in the tectonic-karst depression of Campo Felice in the central Apennines (Italy), in which glacial, alluvial and lacustrine sediments have been preserved. Stratigraphic interpretations of sediments underlying the Campo Felice Plain are based on evidence obtained from nine continuous-core boreholes. The boreholes reach a depth of 120 m and provide evidence of five sedimentation cycles separated by erosion surfaces. Each cycle is interpreted as an initial response to a mainly warm stage, characterized by low-energy alluvial and colluvial deposition, pedogenesis, and limited episodes of marsh formation. In turn, a mainly cold stage follows during which a lake formed, and glaciers developed and expanded, leading to deposition of glacial and fluvioglacial deposits. The chronological framework is established by eleven accelerator mass spectrometer ¹⁴C ages and three ³⁹Ar-⁴⁰Ar ages on leucites from interbedded tephra layers. These age determinations indicate five glacial advances that respectively occurred during marine oxygen isotope stages 2, 3-4, 6, 10 and 14.     

基于WebServices的空间信息应用集成解决方案研究

 在对应用集成及其发展分析的基础上,将Web Services技术运用到空间信息应用集成,提出和建立了面向服务的空间信息应用集成框架,包括Web应用层、服务集成层、服务层和UDDI等4个组成部分。通过该框架,可以实现空间信息集成、服务集成和应用集成。论文解决了空间信息应用集成框架中的2个关键问题:(1)提出了分别从数据层次和业务层次对原有系统集成的解决方案,在数据层次上,提出了基于XML/GML的空间数据封装和基于Web服务接口的空间数据封装策略;在业务层次上,提出根据系统的功能模块和业务逻辑分别进行封装的策略;(2)提出了空间信息Web服务链接和服务组合的串联、并联和混联模式,通过三种模式服务链的设计,可以实现多个服务的链接和组合,从而完成空间信息以及应用集成。     

全球链网下的欠发达地区产业集群化研究——以韶关汽车零部件产业为例

全球链网下的地方产业集群,已成为区域经济发展的重要组织形式。欠发达地区产业集群的形成与发展是特色资源、产业基础、创新文化、政策激励和市场驱动对地方化和全球化两股力量“粘滞—集聚—再粘滞—再集聚”的循环积累结果。针对韶关资源丰富、产业基础厚实,但空间粘滞作用不强、产业集群化程度低的现状,认为韶关汽车零部件产业应走“立足资源,一园三片;精细专工,错位发展”的特色集群化道路。     

生物土壤结皮：荒漠昆虫食物链的重要构建者

干旱荒漠地区由于水分因子的限制,其植被分布以不连续的高等植物斑块与隐花植物及其结皮的斑块镶嵌为其主要特征,构成了独特的荒漠植被景观格局。作为荒漠生态系统的主要组成者,荒漠昆虫与生境的关系,特别是与高等植物之间的食物链关系已得到大量的文献报道。本文基于野外调查和实验室模拟观测,发现了尖尾东鳖甲(Anatolica mucronata)对藓类结皮有取食现象,哈蛃(Haslundichilis sp.)对地衣结皮有取食现象。证实了生物土壤结皮直接参与了荒漠昆虫食物链和食物网的构成,为深入了解生物土壤结皮在荒漠生态系统中的功能和地位提供了实验证据。     

A value chain approach to crisis response system: the case of Qingdao

In this paper, we introduce a value chain approach, on the view of the value chain analytic in business management, to be the framework of a crisis response system serving for crisis management strategy in identifying risk sources, responding to unexpected events, and recovering from a shock. This system is not only a computer system but also a system of governmental emergency response mechanism and it is tremendous and complex. The system integrates and coordinates the correlative resources of emergency response units of the city. We consider the efficiency of the system. In addition, the run cost of the system also is taken into account. Based on this framework, the Qingdao’s practical situation is analyzed. As a result, a design proposal of the Qingdao’s crisis response system is put forward.     

颗粒物质在微剪切振动下的能量耗散研究

采用改进的低频内耗仪研究了几种常见颗粒体系（沙子、玻璃珠）的相对能量耗散性质：能量耗散的振幅谱和频率谱。实验发现,振幅谱中随振幅增大形成一个能量耗散峰,而频率谱线中则观察到随着频率的增加依次出现四个能量耗散峰,对应着体系模量的四个衰减。随探针插入深度的增加相对能耗先增加后减小,出现一个能耗峰值,该峰值对应的深度为体系的临界深度。基于对颗粒体系的介观分析,提出一个流变模型来阐述流变耗散机制,结果表明摩擦在颗粒力学响应中除耗散能量外还起到增加体系弹性的作用。频率谱的分析表明颗粒中还存在另一种耗散机制：颗粒链的共振耗散。     

企业信息技术应用与产业链空间变化——以中国服装纺织企业为例

信息通信技术(ICTs)在经济活动空间重组过程中的作用逐渐被认同,然而不同的空间层级不同的部门其重组过程与特征表现各异,形成的观点和争论多样。企业作为最基本的经济单元在信息化浪潮中发生的变化成为一个重要研究议题。本文以服装纺织企业为研究案例,通过企业访谈获取资料,旨在探讨传统制造业在信息技术下的演变特征,尤其是在信息技术下基于时间成本的生产链空间组织的变化特征。本文主要对服装纺织企业具体的信息技术应用进行了剖析,分析了信息技术下不同发展程度企业生产链空间组织特征及其变化。结果发现服装纺织企业在信息技术下,其设计、生产、配送的周期快速缩减,证明了时间因素在信息技术导致生产链空间组织变革中的重要意义;同时发现信息技术对传统加工制造型纺织服装企业的影响主要表现为生产链某个环节管理功能的加强;而对于产业升级后的企业来说,信息技术对整个生产链空间组织的影响明显。     

浅析长侧链正烷基二氢化茚、烷基噻吩类化合物的地质意义

从颗石藻、球等辫金藻３００℃热模拟产物中检测出长侧链正烷基二氢化茚、烷基噻吩类化合物。二氢化茚类化合物碳数分布范围为Ｃ１３￣Ｃ２５,ｎＣ１４烷基二氢化茚的相对含量最高,没检测到茚类化合物,说明二氢化茚和茚可以源自不同的先质,生活于咸水环境的低等生物是二氢化茚类化合物的母质之一。在３００℃热解产物中检测出以ｍ／ｚ１１１和１２５为基峰的两个系列的长侧链烷基噻吩,表明在中－高盐度环境下,藻类将无机硫转化     

K–Ar ages of the Akan-Shiretoko volcanic chain lying oblique to the Kurile trench: Implications for tectonic control of volcanism

The Akan‐Shiretoko volcanic chain, situated in the Southwestern Kurile arc, consists mainly of nine subaerial andesitic stratovolcanoes and three calderas. The chain extends in a SW–NE direction for 200 km, situated oblique to the Kurile trench at an angle of 25 degrees. Thirty‐seven new K–Ar ages, plus previous data, suggest that volcanic activity along the Akan‐Shiretoko volcanic chain began at ca 4 Ma at Akan, at the southwestern end of the chain, and systematically progressed northeastward, resulting in the southwest‐northeast‐trending volcanic chain. This spatial and temporal distribution of volcanoes can be explained by anticline development advancing northeastward from the Akan area, accompanied by magma rising through northeast‐trending fractures that developed along the anticlinal axis. The northeastward development of the anticline caused uplifting of the Akan‐Shiretoko area and changed the area from submarine to subaerial conditions. Anticline formation was likely due to deformation of the southwestern Kurile arc, with southwestward migration of the Kurile forearc sliver caused by oblique subduction of the Pacific plate. The echelon topographic arrangement of the Shiretoko, Kunashiri, Etorofu and Urup was formed at ca 1 Ma.     

洞庭湖区的泥沙淤积效应

以1951-2005 年长系列实测泥沙等资料为依据, 从泥沙淤积特性与资源环境之间的关系上, 探讨了洞庭湖区的泥沙淤积效应。研究表明: 由于洞庭湖区始终处于淤积状态, 加之人类活动影响, 导致了泥沙淤积循环演进的格局, 以至于使泥沙的灾害性效应与资源性效应 均在湖区得到充分的显示。主要表现在: ① 塑造了水体滩地、泥沙滩地、湖草滩地、芦苇滩地等类型滩地, 构成了湖泊巨系统的主体; ② 孕育或诱发了泥沙淤积→洲滩扩展、围垦→调洪功能下降、鱼类资源枯竭、生物多样性减少灾害链: 泥沙淤积→洲滩扩展→洪涝、水质污染; 泥沙淤积→植被洲滩浮涨→血吸虫病、害鼠致害灾害链; 泥沙淤积→洪溃决堤→土地沙 化灾害链。这些淤积型泥沙灾害链给湖区直接或间接地造成巨大的经济损失。③ 近55 年间, 泥沙塑造土地约98.13×10⁸hm², 人类合理开发利用洲滩资源获得了巨大的经济效益, 就地挖沙加高防洪大堤2~3 m, 累积土石方约55×10⁸ m³, 节省了购买大量原材料的开支。