1960-2009年辽宁冬季风寒温度时空变化特征          下载免费PDF全文

息涛  张鹏  李岚  孙丽  王艳丽 《气象与环境学报》2013,29(2):89-95

基于1960-2009年辽宁省52个气象站气象资料,采用风寒温度计算公式和适合辽宁地区的分级标准并分类,得出50 a历年各类别风寒温度日数。使用旋转经验正交分解法（REOF）,分别针对各类别风寒温度日数进行区域划分,并分析了其空间分布和变化趋势。结果表明：辽宁省可按4个风寒温度类别分别分区,凉爽至轻度风寒可分为4个区域,而轻度、中度及重度风寒可分为3个区域;辽宁省辽东半岛五个地市所在地理区域为易患风寒日数最少的地域,辽宁北部、东北部五个地市为易患风寒日数最多的地域;辽宁地区各风寒类别所在划分区域的日数变化相位基本一致;年平均易患风寒日数总体变化趋势是在1986年发生一次突变,在1960-1985年相对偏多,1986-2009年相对偏少。  相似文献   

British National Report to the International Cartographic Association for the Period 2011-2015     

David Forrest 《The Cartographic journal》2013,50(3):213-214

In recent years, the concepts of usability, user experience, and user-centricity have gained in interest. Digital applications, developed in line with criteria related to these approaches, ask for a deeper understanding of users and their requirements. But, even though there is a wide range of methods available, the creation of user-centric applications with good usability and user experience still poses great challenges for developers. This is also true for web maps, i.e. web map applications, which today are ubiquitous on the Internet. They have evolved into an important information and communication tool and address users who do not possess any specific knowledge of Geoinformatics (GI) or Cartography. Despite the efforts made to meet the requirements and preferences of laymen, these users still often face problems when dealing with web map applications. This refers to aspects of design, content, and functionality. Here, participatory design, which is well-known in the field of Software and Web Engineering, might provide a suitable means. By engaging users directly and actively in the application development process, developers are able to gain a profound understanding of the users and their needs. However, there are several open questions regarding the use of participatory design for designing and implementing web map applications: What does the use of participatory design in web map development processes look like in detail? How and to what degree can users be involved in the development processes? Which added values exist? These questions are addressed by the project YouthMap 5020, whose main goal it was to create a prototype youth-centric web map for the Austrian city of Salzburg (zip code 5020). Applying the approach of participatory design, about 120 teenage pupils from several local schools were involved in all kinds of tasks related to the phases of generating the youth-centric Salzburg web city map. Experience and knowledge gained thereby allowed elaborating recommendations generally useful for generating youth-centric web map applications.  相似文献   

汶川地震断裂带科学钻探项目WFSD-3孔施工技术与体会          下载免费PDF全文

朱恒银  朱永宜  张文生  张正  余善平  漆学忠 《探矿工程》2012,39(9):12-17

WFSD-3孔是汶川地震科学钻探项目的系列钻孔之一,历经2年多的施上,攻克了世界罕见的复杂地层钻进、大直径原状样取心和高地应力下钻孔护壁重重技术难关,圆满完成了施工任务。重点介绍了WFSD-3孔施工技术与经验,并对施工若干技术问题提出探讨与认识。  相似文献   

体验(式)旅游概念辨析及开发探讨     

周永广  徐林强  徐喆 《地理与地理信息科学》2008,24(1):109-112

借鉴"情景规划和体验设计"方法,提出我国体验(式)旅游开发的思路。指出体验(式)旅游开发要认真研究游客的消费取向,注重旅游情景规划,营造体验氛围、编织动人心魄的故事、精心导演活动、合理安排游览线路和时间;在充分了解游客心理特点和角色特征基础上打造体验服务,设计体验性纪念品,让游客获得难忘体验。  相似文献   

Absencing/presencing risk: Rethinking proximity and the experience of living with major technological hazards     

Karen Bickerstaff  Peter Simmons 《Geoforum》2009,40(5):864-872

There is now a substantial body of sociocultural research that has investigated the ways in which specific communities living in physical proximity with a variety of polluting or hazardous technological installations experience and respond to their exposure to the associated risk. Much of this research has sought to understand the apparent acceptance or acquiescence displayed by local populations towards established hazards of the kind that are typically resisted when the subject of siting proposals. However, recent theoretical contributions, produced largely outside the field of risk research, have problematised the objective distinction between proximity and distance. In this paper we explore the potential of some of these ideas for furthering our understanding of the relationship between place and the constitution of risk subjectivities. To do this we re-examine a number of existing sociocultural studies that are predicated on a localised approach and conceptualise the relationship of physically proximate sources of risk to everyday experience in terms of practices of ‘presencing’ and ‘absencing’. We conclude with some thoughts on the methodological and substantive implications of this reworking of proximity for future research into risk subjectivities.  相似文献   

粉末压片制样-X射线荧光光谱法测定锂云母中的高含量氟   总被引：1，自引：1，他引：0  

曾江萍  李小莉  张楠  王家松  魏双  王娜 《岩矿测试》2019,38(1):71-76

锂云母中的氟含量很高(1. 36%～8. 71%),在焙烧锂云母矿物时锂的浸出率随着含氟量的增加而逐步下降,随着锂云母脱氟率的提高,锂的浸出率也相应提高,准确测定锂云母中的氟、控制氟含量可为确定焙烧过程的工艺条件、设备参数及成本提供依据。目前氟的测定主要采用离子选择电极法,但过程复杂、分析时间长且空白值高。本文采用粉末直接压片制样X射线荧光光谱法测定锂云母中的氟,氟的检出限为46±4μg/g。将锂矿石标准物质和人工配制校准物质制成工作曲线,经验系数校正基体效应和谱线干扰,方法精密度(RSD,n=10)为1. 03%。采用本法分析由标准样品合成的样品,测定值与理论值吻合良好;用实际样品验证,测定结果与离子选择电极法的测定值相符。本法适用于分析锂云母中0. 68%～9. 14%的氟。  相似文献   

旅游体验价值共创影响机理研究——以北京香山公园为例     

李丽娟 《地理与地理信息科学》2012,28(3):96-100

顾客与企业共同创造价值是当前管理学、营销学研究的热点,但鲜见在旅游学中的研究。该文将价值共创理论运用到旅游学中,构建了旅游体验价值共创的前因影响要素、过程及结果之间内在影响机理的理论模型,并提出路径因果关系的假设。以北京香山公园游客调研数据为基础,运用因素分析、信度效度检验、积差相关分析及逐步回归分析方法进行实证检验。研究结果表明,游客的某些性格特质、领袖地位、信息交流意愿及景区供给因素与其参与旅游体验价值共创行为具有正相关性,而游客通过与景区共同创造价值会提升旅游体验质量,并产生积极的游后行为意向。据此,提出景区构建旅游体验价值共创机制的具体建议。  相似文献   

融安县汛期暴雨气候特征及单站短期预报方法     

黎惠金 《气象研究与应用》1999,20(4)

通过对融安县４２ａ雨量资料及近１０ａ６６ 场暴雨个例的分析,得出该县的暴雨气候特征和影响系统分型,并结合当地近年暴雨预报实践经验, 总结出适合于当地Ⅰ、Ⅱ、Ⅲ型暴雨短期预报方法。实践证明, 该方法切实有效, 可为县站预报专家系统的建立提供依据。  相似文献   

Stages on Journeys: Some Remarks about Human Geography andPsychotherapeutic Practice     

Liz Bondi 《The Professional geographer》1999,51(1):11-24

This paper attempts to open up discussion about interconnectionsbetween psychotherapeutic practice and human geography. I offer brief “here and now” observations to introduce the importance of personal experience and interpersonal relationships. I then construct an autobiographical narrative to elaborate the themes of separation and connection. This frames my preliminary explorations of tensions and convergences between ideas flowing from psychotherapeutic practice and human geography. I conclude by stressing limits to knowledge.  相似文献   

城市河流污染治理的国际经验   总被引：32，自引：0，他引：32  

汤建中  宋韬  江心英  方玉梅  周蓉  孙建军  陈自昭  杨大庆  李涛 《世界地理研究》1998,(2)

城市河流有复杂的生态系统,齐全的污染类型,污染危害极为严重。然而,随着经济发展和技术进步,城市河流的污染治理已不再是解不开的难题,发达国家的城市河流大部门已进入良性生态循环阶段,碧水游鱼使人留连忘返。本文以泰晤士河为例,总结了依法治污、区域性防治技术、污水处理系统、芦苇床治污、引水冲污、疏汲底泥等城市河流污染治理的国际经验,并对苏州河的整治提出了若干有益建议。  相似文献