大连与辽宁沿海经济带城市互动发展的实证研究

随着辽宁沿海经济带开发上升为国家战略以后,大连作为该城市群的龙头城市,肩负着带动沿海城市乃至整个辽宁省经济发展的重要使命。在基于城市流强度和城市相互作用强度模型的基础上,从不同的层面对大连与辽宁沿海经济带城市群的内在功能联系进行分析,其结果如下：大连市外向功能量和城市流强度居辽宁沿海经济带首位,其他城市普遍较弱;大连与其他城市的经济联系强度较弱,距离因素作用明显;大连市自身综合实力较强,但其核心城市带动作用不突出。最后,针对研究现状,提出一定的对策建议。     

面向用户对象的CORS运维服务综合体系研究

随着国家、省、市各级CORS的不断建设,如何便捷高效维护CORS基础平台,充分发挥CORS的服务效能已成为当前需要解决的一个重要问题,本文在大量调研分析的基础上,结合NJCORS运维经验,提出了面向用户对象的CORS运维服务综合体系,并基于该体系理念,构建完成了基于B/S架构的“南京市连续运行基准站网运维与位置服务系统...     

Distributed role-based access control for coaliagion application

Access control in multi-domain environments is one of the important questions of building coalition between domains. On the basis of RBAC access control model, the concepts of role delegation and role mapping are proposed, which support the third-party authorization. Then, a distributed RBAC model is presented. Finally the implementation issues are discussed.     

公平因素对地勘单位职工工资满意度的影响和作用

通过对地勘单位职工工资满意度的研究,论述了公平因素对工资满意度的影响,分析了地勘单位职工工资虽然在上升,但是职工对工资的满意度却不高的原因,说明了工资与满意度联系的关键不是个人的实际所得,而是职工公平理念对单位（企业）的要求,进而提出了构建企业工资分配制度应注意的公平原则.     

Rural tourism in Spain: an analysis of recent evolution

The aim of this paper is to analyse the evolution of Rural Tourism¹ (RT) in Spain within a European context. The first step is to examine the development of different “models” of RT and trace some experiences of the application of European policy. In order to set the scene and understand this evolution, the collective imagery on which RT is based is also analysed. This is followed by a study of the development of tourist products and services in rural Spain since the 1980s, as diversification of the traditional sun/sand/sea (3S) tourist economy is sought. The analysis underlines the importance of the role of women, and the consequences of the activity for the economy of rural areas. The purpose is to identify differences in the pattern of evolution with more northern European countries, understand their causes and formulate recommendations for future development.     

日、月对孕震区的水平引潮力与震源机制的关系

根据计算日、月对孕震区水平引潮力方位角的表达式及美国哈佛大学提供的全球 Mw≥7.0的矩张量地震目录 ,选取了 1 980年 1月至 1 999年 1 2月全球发生的 (Mw≥ 7.0 ) 2 4 2次地震。利用地震目录中提供的地震矩张量参数 ,计算了每次地震发震应力场 P轴、T轴的方位角。同时计算了每次地震时日、月对震中区水平引潮力的方位角。将此方位角与 P轴、T轴以及二组断层面的走向进行对比分析。结果表明 ,日、月对震中区的水平引潮力方向与 P轴、T轴的方位角及二组断层面的走向互相平行或互相垂直 ,其平行或垂直的一致性非常好。平行或垂直相差在1 0°、2 0°、30°之内的发震概率分别达到了 0 .41 4、0 .736、0 .945。这个结果表明 ,日、月对孕震区的水平引潮力与大地震的发生密切相关。并进一步讨论了日、月对孕震区的水平引潮力对大地震发生的调制作用     

岩体渗透性空间对河谷地下水形态的控制作用 以洮河九甸峡水利枢纽坝区为例

河谷区的地下水水位线形态表征着河谷区地下水的流场特征,其成因关系到水库渗漏和工程的可行性。岩土的渗透性对河谷地下水形态具控制性作用,在同一工程区内岩土体渗透性在空间上的分布也常常是不均一的,在我国西南部的高山峡谷地区,岩体的渗透性空间具明显的各向异性和分区分带特征,这使得地下水水位线形态在横剖面上呈现缓U型、斜W型和W型,在河流两岸产生地下水低凹带。通过对甘肃洮河九甸峡坝区地质条件的研究表明,河谷两岸地下水低凹带并非一定是存在强渗流通道所致,河谷区岩体渗透空间具有的分层分带和强各向异性特性足以使得河谷两岸出现地下水低凹带。这有效地解决了因坝区存在地下水低凹带而带来的疑虑和担忧,有力地推动了工程的进展,同时对于其他地区工程的开展具重要的借鉴意义。     

20世纪以来东北城市的发展及其历史作用

东北地区城市的产生与发展有着悠久的历史,并形成特有的文化,但由于历史的原因,城市发展水平长期落后于中原地区。东北地区近现代城市的产生与发展是近100年的事情。20世纪以来,东北地区经历了清政府的移民实边,俄、日等帝国主义的殖民侵略与掠夺开发,新中国成立后的工业化重点发展。伴随着经济的发展和经济结构的剧烈变革,东北城市发展进入鼎盛时期,并后来居上成为我国除几个直辖市外,城市化水平最高的地区。与全国其他地区城市相比,东北城市发展有着特定的社会政治与经济背景,但也清晰而集中地反映了城市化与交通发展、工业化相互促进,同步发展的特征。本文试图把东北地区近百年来城市的发展置于区域社会政治与经济发展的进程中进行考察,着重探讨东北辽宁、吉林、黑龙江三省城市发展的动因,同时阐明它的发展对区域经济及全国经济产生的影响,分析当前存在的主要问题。     

Assessing the relative role of climate change and human activities in sandy desertification of Ordos region,China

Climate change and human activities are driving forces of sandy desertification and the relative role of them in sandy desertification is the hot point in related researches. A study was carried to assess the relative role of climate change and human activities in sandy desertification of Ordos region in China. Potential NPP and the difference between potential and actual NPP were selected as indicators to assess the relative role of climate change and human activities in sandy desertification, respectively. Assessing methods were built based on some scenarios for the reversion and expansion of sandy desertification and the relative role of climate change and human activities in sandy desertification of Ordos region were assessed from 1981 to 2000. The results showed that although some local places experienced an expansion of sandy desertification, the change of sandy desertification of Ordos region from 1981 to 2000 showed a stably reversing trend. The relative role of climate change and human activities in sandy desertification of Ordos region varied at different temporal and spatial scales in the reversion and expansion processes. In the reversion of sandy desertification, climate change was the dominant factor in the period of 1981 to 1990 and the reversed areas mainly induced by climate change including Mu Us sandy land and the transition zone between temperate steppe and temperate deciduous scrubs in north east of Ordos region; however, human activities controlled the reversed process during the period from 1991 to 2000 and the areas mainly induced by human activities distributed in all banners of Ordos region. In the expansion of sandy desertification, human activities were the dominant factor in the period of 1981 to 1990 and the expanded areas mainly included the regions around common boundary of Hanggin, Dalad Banners and Dongsheng City; however, climate change dominated the expansion of sandy desertification from 1991 to 2000, the expanded areas equably distributed in the whole of Ordos region except the south east of Otog Qian, Uxin and Jungar Banners. Supported by Chinese National Academic Institutional Commonweal Research Programs (Grant No. 2005DIA3J006)     

于都县银坑矿田F1断裂特征及其控矿作用

于都县银坑矿田的Ｆ１断裂是该矿田区域性推覆前峰,其断裂规模大,活动时间较长,在银坑矿田控制了地层、岩浆岩和多金属矿化的展布。本文主要从断裂的形象特征入手,浅析了断裂的控矿作用,同时指出Ｆ１断裂不但具有导岩导矿意义,耐用还有储矿作用。断裂本身亦具有重要的找矿意义。