基于归属感及价值感视角的用户参与影响研究——以在线旅游社区为例

近年来关于用户参与的研究大受欢迎,但鲜有研究从用户参与广度和深度出发,基于社区归属感及服务个人价值独特视角深入探讨用户参与对用户忠诚的影响。本文以在线旅游社区为例,以个人价值理论和基本心理需要理论为基础,采用情境问卷法构建了包含用户参与、用户忠诚、社区归属感及服务个人价值的结构方程模型。研究表明：用户参与广度和深度对用户忠诚都有显著正向影响;安宁生活价值、社会融合价值和社区归属感显著中介于用户参与和忠诚的关系,其中社会融合价值中介作用最强,但社会认同价值没有发挥显著中介作用。本文的新发现在丰富学术界对用户参与相关研究的同时,还对在线旅行企业如何提高用户忠诚有较大参考意义。     

南京都市圈空间相互作用时空演变分析

利用改进引力模型并结合GIS 方法,分析2000 年以来南京都市圈县域尺度空间相互作用的时空演变,探讨圈域发展的问题与对策。结论如下：南京都市圈县市空间联系强度不断增强,南京主城与其它县市相互作用强度最高,其次为沿江各县市间、地级市主城区与其郊县间,南京、扬州、镇江、马鞍山等所辖县市间出现了联系强度较高的网络,有一体化发展趋势;历年县市潜力值都由最高峰的南京主城区为中心向四周递减,呈圈层式结构,在向外扩展过程中存在空间变异性,高潜力区沿江伸展,随着圈域内其它地区的发展,单一核心的结构开始发生变化;最后总结都市圈发展过程,提出圈域一体化发展的政策、交通、产业措施。     

北京城市空间认知的影响因素分析

城市空间认知影响因素分析与认知空间格局研究具有同等的重要性。论文基于北京城市空间认知调查问卷数据,引入居民属性等16个变量,利用二值Logistic回归方法,提炼出23个认知地点整体以及交通节点、商场、休闲地三种类型地点的认知影响因素。发现:第一,不同类型地点的认知率影响因素存在异同,其中,存在职住变更是最为显著的共性因子。第二,各类地点中的显著影响因子对认知率的作用大小有明显差异,年龄46-55岁变量是23地点认知率的最重要影响因素,交通节点和商场认知率最重要的影响因素为就业内城四区,而就业地与休闲地距离小于等于6km变量对休闲地认知率的影响最大。第三,各类模型中的影响因素类型不同且影响程度有很大差异,故具有不同属性信息组合的居民认知率不同。     

港口体系演化的影响因素及驱动机制分析

区域港口体系的结构和层次是不断变化的,根据各港口功能和作用的大小不同的变化,港口体系演化变现为集中化发展和分散化发展两种趋势。影响港口体系演化的因素很多,具体可归纳为技术进步因素、区位因素、航运市场因素、政策和政治因素四类。在集装箱革命之前,区位因素是影响港口体系结构的主要因素,而集装箱化之后,新技术的应用、航运市场在港口体系层次变化中的作用越来越明显。政策和政治因素是港口体系发展的背景因素,其影响力一直较大。最后通过构建港口体系动力模型,详细阐述了各个因素对港口体系演化的影响过程和驱动机制,分析了不同因素对于港口体系集中化和分散化发展的促进和阻碍作用。     

Sources and composition of fluids associated with fluorite deposits of Asturias (N Spain)

The fluorite deposits of Asturias (northern Iberian Peninsula) are hosted by rocks of Permo‐Triassic and Palaeozoic age. Fluid inclusions in ore and gangue minerals show homogenization temperatures from 80 to 170°C and the presence of two types of fluids: an H₂O–NaCl low‐salinity fluid (<8 eq. wt% NaCl) and an H₂O–NaCl–CaCl₂ fluid (7–13 wt% NaCl and 11–14 wt% CaCl₂). The low salinity and the Cl/Br and Na/Br ratios (Cl/Br_molar 100–700 and Na/Br_molar 20–700) are consistent with an evaporated sea water origin of this fluid. The other end‐member of the mixture was highly saline brine with high Cl/Br and Na/Br ratios (Cl/Br_molar 700–13 000 and Na/Br_molar 700–11 000) generated after dissolution of Triassic age evaporites. LA‐ICP‐MS analyses of fluid inclusions in fluorite reveal higher Zn, Pb and Ba contents in the high‐salinity fluids (160–500, 90–170, 320–480 p.p.m. respectively) than in the low‐salinity fluid (75–230, 25–150 and 100–300 p.p.m. respectively). The metal content of the fluids appears to decrease from E to W, from Berbes to La Collada and to Villabona. The source of F is probably related to leaching of volcanic rocks of Permian age. Brines circulated along faults into the Palaeozoic basement. Evaporated sea water was present in permeable rocks and faults along or above the unconformity between the Permo‐Triassic sediments and the Palaeozoic basement. Mineralization formed when the deep brines mixed with the surficial fluids in carbonates, breccias and fractures resulting in the formation of veins and stratabound bodies of fluorite, barite, calcite, dolomite and quartz and minor amounts of sulphides. Fluid movement and mineralization occurred between Late Triassic and Late Jurassic times, probably associated with rifting events related to the opening of the Atlantic Ocean. This model is also consistent with the geodynamic setting of other fluorite‐rich districts in Europe.     

甘肃礼县高寺头新石器时代遗址发掘报告

礼县高寺头遗址,位于礼县县城西南9公里处的石桥乡高寺村西南部的小山坡上,原称之为"礼县石桥镇遗址"。1986年,由甘肃省文物考古研究所组成考古队进行了发掘。同时,对该遗址的各台地进行了考古调查,发现在第二台地多为仰韶文化早、中期的遗存。第三、四级台地则多为仰韶文化晚期的遗存。故设置了上下两个发掘区进行了小规模的清理发掘,共清理出房址4座,灰坑8个,室内窖穴3个,出土陶器、石器、骨蚌器等遗物765件。均属于仰韶文化时期的遗存。     

Agriculture and community in Chaco Canyon: Revisiting Pueblo Alto

The Bonito Phase (ca. AD 860–1140) in Chaco Canyon is widely recognized as one of the primary sources of information about emergent social complexity in prehispanic North America. Large masonry buildings called “great houses,” such as Pueblo Bonito, are iconic symbols of the rapid rise of a powerful society based on the ability to harness labor to prolonged construction projects. It is clear that the political forces at work during the Bonito Phase had an agricultural foundation, presumably in the financing of construction through food surpluses, but the actual nature of farming in Chaco is surprisingly opaque to archaeologists. Indeed, many researchers have concluded that farming in Chaco Canyon was too constrained by poor soils to have supported the dynamic developments associated with the massive stone structures and extensive trade systems of the Bonito Phase. The popular perspective that Chaco was mysterious or enigmatic is largely a response to this view of the canyon as agriculturally marginal. In this study we argue that a predictive model of potential agricultural productivity that includes other portions of the canyon besides the floodplain indicates that Chaco was not marginal for farming. The results of this analysis suggest that great house communities may have been sited to control local production zones and that some great houses may have been linked to others in order to manage multiple agricultural areas.     

现代中国环境考古研究模式的分析

本文将1987年以来的中国环境考古研究称为"现代中国环境考古研究",并将之归纳为"考古地理的环境考古研究模式"、"文化历史环境考古研究模式"和"资源环境考古研究模式"。本文对这三种研究模式的合理性进行了分析。接下来,从考古学的基本理论假设出发,指出环境考古学、文化历史考古学之间并没有严格的继承关系,中国环境考古研究的最大问题是核心概念的不匹配。最后,通过考察西方环境考古研究和考古学史,本文提出应该用文化适应,即"考古学中的文化"取代考古学文化而将之作为核心概念进行环境考古研究,让中国环境考古摆脱文化历史考古学概念体系的束缚。     

姜寨第一期房屋遗迹的初步考察

本文对姜寨第一期房屋遗迹进行初步考察,确认了构成姜寨第一期聚落的5组房屋群之间的分界、各组房屋群的数量,每组房屋群皆由大型、中型和小型的房屋组成,且以小型房屋数量最多,中型和大型房屋数量较少.同时了解到各组的房屋建筑形式均以圆形地上和方形半地穴为主,而且房屋呈向心分布,门向均朝向聚落中心的中央广场.姜寨第一期聚落俨然是一个完整的史前社会组织.     

Täuschend ähnlich – Bemerkungen zur Geschichte des Modellexperiments

Deceptively Similar. Remarks on the History of Model Experiments. The article argues for a reconsideration of what has been called ‘model experiments’ or ‘mimetic experiments’. After providing a short overview of the historical developments and the occurences of such types of experiments, three aspects pertaining to their practical functions are discussed. First, the aspect of control: Model experiments are often employed to get a grasp on phenomena that are otherwise beyond the control of human actors. Second, their aesthetic dimension: Model experiments often employ aesthetic strategies that, far from being epistemic obstacles, establish their function as models and may generate new areas of research. Third, meta‐theories: The practice of experimenting on models is often accompanied by discussions about their representativeness. Albeit triggered by problems in local contexts, this self‐reflective discourse did acquire a more general relevance with the formulation of scaling laws in the 19th century.