EXPLAINING THE VARIATION IN THE EMPIRICAL ESTIMATES OF ACADEMIC KNOWLEDGE SPILLOVERS*

ABSTRACT This paper presents a meta‐regression analysis of the empirical studies exploring the relationship between academic knowledge spillovers and regional innovation. The results of the literature are found to depend on country effects, the level of geographical aggregation employed, the method of measuring innovative output, the use of industry‐level data, and on the sectoral composition of the sample. Endogeneity, sample selection, and agglomeration forces are further elements that explain the findings on this issue but only weak evidence, after controlling for publication bias, supports the existence of a genuine spillover effect of university research on regional innovation.     

THE COMPARISON OF ARCHAEOMAGNETIC DATA WITH THE ANALYTICAL REPRESENTATION OF THE GEOMAGNETIC FIELD FOR THE LAST 2000 YEARS

Spectral analysis techniques are applied to archaeomagnetic data and the significance of the results are discussed.     

河南省县域贫困程度及影响因素分析

贫困地区的地理识别,是区域扶贫政策精准、有效实施的前提。以经济指标衡量河南省县域相对贫困程度,并借助有序logit回归模型分析社会经济发展、自然条件、区位交通、历史基础4类变量16个影响因子对区域贫困状况的影响程度。分析发现,河南省县域综合经济发展水平存在较大的区域差异,经济发展水平相对较低的县域多分布在豫西和豫东南,且区域内存在部分潜在贫困县。回归分析结果表明,工业化水平、居民储蓄水平、气温、湿度、到最近城市的距离、国道道路密度、期初经济水平7个因子对县域贫困程度影响显著。地区扶贫政策实施过程中,在重视经济因素的减贫效应时,也应重视自然因素的致贫效应,政府主导,因地制宜,逐步实现区域协调发展。     

英国旅游者出游年龄规律研究

旅游统计和市场研究中年龄经常作为一个变量被广泛使用,但是针对年龄变量的论证却寥寥无几。本文依托中英两国最新权威统计资料,结合实地问卷调查资料,以英国人为例,研究年龄对其出游的影响规律,首次提出了出游年龄优势论。英国人出游决策呈现明显的年龄规律,以青壮年(25—44岁)和中老年(45—64岁)为主,占80%以上,其余年龄群体所占比例较少。这种现象归结为"出游年龄优势论"。人口老龄化趋势促使旅游管理者和营销者关注老龄化市场,老龄市场份额呈上升趋势,但是老年人不会取代中青年成为首要旅游市场,这主要是受健康状况和收入水平双瓶颈限制。英国旅游市场呈现出来的年龄规律具有一定的普遍性。     

THE USE OF TEXTURAL PARAMETERS IN THE ANALYSIS OF CAVE SEDIMENTS

This paper considers the presentation of the results of the mechanical analysis of cave sediments, suggesting that the use of grain size parameter scatter diagrams is preferable to the older method of cumulative percentage frequency graphs. A sequence of samples was taken from an ideally-situated cave, the Badger Hole at Wookey, and first subjected to the standard soil analytical tests, followed by a detailed mechanical analysis. It is hoped that this preliminary work will encourage a more quantitative approach to granulometric analysis for archaeological purposes, leading eventually to the extraction of more precise environmental data from cave sediments.     

旅游安全网络关注度区域差异研究——基于中国31个省市区旅游安全的百度指数

基于2009-2012年全国31个省、自治区、直辖市的旅游安全网络关注度的百度指数,采用泰尔指数测算方法,分析全国旅游安全网络关注度的区域差异特征,研究发现:1旅游安全网络关注度总体呈现出平稳增长态势,但相比我国互联网上网人数还较小;2区域间、区域内和以省际为单元的旅游安全网络关注度差异显著;3区域间旅游安全网络关注度差异是造成以省际为单元的旅游安全网络关注度差异的主要原因,区域内旅游安全网络关注度对以省际为单元的旅游安全网络关注度的贡献率很小;4西部地区的旅游安全网络关注度省际规模位序低于中部、东部地区,东部地区旅游安全网络关注度指数一直靠前;5整体上,2011-2012年全国和三大区域的旅游安全治理信息的网络关注度较高,所占比重最大;中部地区对旅游安全治理信息的网络关注度明显高于东部和西部地区;2011年和2012年东、中、西部三大区域假日旅游安全信息网络关注度所占比例较接近。     

美国大都市区尺度上的工业区位研究

工业化和城市化之间的互动关系体现在都市区尺度上的工业区位上。本文在新经济地理学和城市地理学所揭示的产品差异化和城市集聚效应相互关系的基础上,通过区位熵分析、赫芬达尔-赫希曼指数,对美国工业区位与大都市区间的耦合关系进行实证研究。结果显示:集聚于大都市区核心区的往往是产品个性化和定制化程度较高的行业;位于大都市区外围区的大都是产品依赖于城市市场,但标准化程度较高的行业;传统制造业则往往位于非大都市区。多数都市工业的市场集中度较低,而大部分传统工业的市场集中度较高。这不仅印证了新经济地理学的理论推演和城市地理学的行业分析,而且对包括中国在内的转型国家城市及其产业发展具有重要的参考意义。     

THE ANALYSIS OF GOLD COINS—A COMPARISON OF RESULTS OBTAINED BY NON-DESTRUCTIVE METHODS

This paper discusses a systematic difference between the results found when one series of Dark-Age gold coins were analysed both by neutron activation and by specific gravity analysis and when a second series of similar coins was analysed by the Oxford Milliprobe and by specific gravity. No reason is given for this systematic difference, although there is evidence that all three methods are slightly in error, two of them giving results for gold which are too high and the specific gravity method giving results which are too low.     

THE TREASURE OF GUARRAZAR: TRACING THE GOLD SUPPLIES IN THE VISIGOTHIC IBERIAN PENINSULA*

The treasure of Guarrazar, found in the 19th century in Spain, is the most important illustration of the high level of Visigothic jewellery in the Iberian Peninsula. The votive crowns and crosses of this treasure are an arrangement of pierced gold in a Byzantine–Germanic style, decorated with emeralds, garnets, sapphires and other materials. In order to establish the provenance of the gold, we analysed a group of 46 minute samples from the most important pieces kept in Spain for major and trace elements. The combination of PIXE and PIGE with an external 3 MeV proton µ‐beam was used to analyse the samples. Considering the gold sources cited by Pliny the Elder and the composition of contemporary Visigothic coins, we suggest the exploitation of south Iberian mines. Using the same set‐up, we complemented these results with the analysis of 11 emeralds inlaid in items from the Guarrazar jewellery that is kept in France. We suggest the use of European sources unknown to the Romans for these gemstones.     

NEIGHBOURHOOD ETHNIC MIX AND THE FORMATION OF MIXED‐ETHNIC UNIONS IN BRITAIN: A LONGITUDINAL ANALYSIS

Although developed societies are becoming increasingly ethnically diverse, relatively little research has been conducted on geographies of mixed‐ethnic unions (married or cohabiting). There is some recent evidence from the US that mixed‐ethnic couples are more likely to be found in mixed‐ethnic neighbourhoods, but this research is based on cross‐sectional data. Therefore it is not possible to determine whether mixed‐ethnic couples are more likely to form in mixed‐ethnic neighbourhoods or whether they are more likely to move there. Our longitudinal analysis allows us to tease out the relative importance of these two processes, furthering our understanding of the formation of mixed‐ethnic unions. Using data from the Office for National Statistics Longitudinal Study we examine neighbourhood effects on the formation of mixed‐ethnic unions in England and Wales. We find that mixed‐ethnic unions are more likely to form in neighbourhoods with low concentrations of co‐ethnic population. The results from this study lend support to the contact theory that geographical proximity to other ethnic groups enhances mutual understanding between people from different ethnic groups and could lead to the development of intimate partnerships.     

珠三角中心镇城市化对区域城市空间结构的影响——基于CA的模拟和分析

在珠三角的城市化过程中,中心镇的城市化对区域城市空间结构的形成和发展具有重要的影响,定量地研究中心镇的城市化对揭示珠三角地区城市化过程与城市空间结构的变化具有重要意义。本研究以东莞市为例,运用城市元胞自动机模型,模拟市域内1988-2004年的城市扩张过程,分析中心镇城市化对整个城市空间结构的影响。主要结论:1988-1993年,中心镇的城市化对区域城市空间结构影响较小,城市主要沿道路扩张,城市在空间布局上相对松散;1993-1997年,中心镇对区域城市空间结构影响增强,城市以中心镇为中心的扩张非常明显,城市空间沿道路的扩张,基本形成了渐进扩散式的"点-轴"空间发展模式,形成沿道路和中心镇扩展的格局;1997年以后,中心镇的辐射作用进一步增强,形成了"点-轴-集聚区"的城市空间扩展模式,城市空间扩展区在空间上更集中于中心镇。     

人民币国际化及其对币缘政治的影响

当今世界有两个货币现象引人注目,一个是欧元危机,另一个是人民币币缘政治影响的扩大。文章总结了扩大人民币币缘政治影响所取得的成效,探讨了进一步提升的路径。将人民币币缘政治影响的扩大总结为使用范围扩大、跨境贸易中结算额增加、与其他货币的互换额攀升、可直接交易国家增多、离岸清算中心数增加、国际地位提升、国际化指数提高7个方面;提出了进一步提升人民币币缘政治影响的6点建议：①促进经济持续稳定发展,增强我国的综合实力与国际竞争力,②积极开展国际贸易合作,③遵循周边→区域→全球的顺序有序推进,④以地缘优势共建“一带一路”倡议,⑤充分发挥香港、中国（上海）自贸区的作用,⑥借力亚投行的平台,优化国际金融格局。     

PETROGRAPHIC AND ISOTOPIC CHARACTERIZATION OF THE MARBLE OF THE ISLAND OF TINOS (GREECE)*

Most outcrops of good‐quality crystalline marble in Mediterranean countries were exploited in Greek and Roman times. Hence, a wide variety of marble is now found in archaeological excavations. The precise determination of the provenance of a marble object is of great archaeological importance, and is now mostly obtained by coupling the petrographic study of a thin section with the analysis of the C and O stable isotopes, or by stereomicroscopy and EPR. The existing databases are considerable but still insufficient, because our knowledge about and study of ancient Mediterranean quarries remain incomplete. The contribution of this research is to add new petrographic and isotopic data on small quarries on the Greek island of Tinos that were exploited in antiquity. This marble belongs to the same geological horizon; it is quite pure, sometimes dolomitic and characterized by a low‐T, high‐P metamorphism that produced a limited recrystallization (MGS varying from 0.64 to 2.50 mm) on marine limestone protoliths. The petrographic features are quite distinctive: the fabric is strongly lineated and often stressed; and the accessory minerals are ubiquitary quartz, ore minerals, graphite and muscovite. As far as the isotopic data are concerned, δ¹³C_PDB varies from 1.1 to 2.7, and δ¹⁸O_PDB from ?1.7 to ?11.4. Both the features and the data have been compared with those of similar marbles used in antiquity, showing that their combination mirrors the fingerprint of the Tinos marble.     

基于分层聚类的旅游目的地营销系统研究

旅游目的地营销系统是一个重要的研究领域。利用1068份长沙市居民的有效问卷,针对湖南省内的景区景点、信息渠道和出游方式进行分层聚类,发现在长沙居民心目中,湖南省各景点存在7大类型。就各类型目的地现实客源市场的行为特征进行了探讨,针对各类型总结了不同的信息渠道、销售渠道,给出了不同的营销建议,并归纳出各旅游目的地在空间距离上形成的市民观光减压活动圈、城市商务/会议活动圈、猎奇探秘活动圈。     

基于旅游线路的区域旅游流网络结构特征研究

随着中国-东盟自由贸易区的快速发展,泛北部湾区域旅游业合作也日益加快。社会网络分析以其独特的理念,弥补了传统旅游研究的个体主义视角,本文利用社会网络分析法,通过搜集相关数据资料,基于旅游线路视角对泛北部湾区域的旅游流网络空间结构进行分析,深入探究泛北部湾区域旅游空间网络结构特征,并在此基础上就推进泛北部湾区域旅游业合作发展提出了相应建议。     

UNOFFICIAL COINAGE IN THE THIRD CENTURY ad IN THE GALLO‐ROMAN WORLD: CHEMICAL AND PHYSICAL ANALYSES FOR DETERMINING THE LOCALIZATION OF THE WORKSHOP*

The third century ad was a complex period of crisis in the Roman world. In this paper, official and unofficial antoniniani, and double sestercii and sestercii, were analysed by fast neutron activation analysis (FNAA) to determine the alloys used by the craftsmen for producing forgeries. Moreover, at Châteaubleau, archaeologists discovered antoniniani and bronze forgeries from Postumus. Similar materials have been found in other hoards. They are believed to have been produced by a workshop called ‘atelier II’ by numismatists. The question was whether it is possible to differentiate the Châteaubleau production from the atelier II production.     

基于对应分析法的遗产旅游影响感知差异研究

旅游发展给世界遗产地带来的影响日益受到众多学者关注。本文通过对全国13个遗产地进行分组调研与考察,利用SPSS13.0对数据进行统计描述分析、多组数据单项方差分析,对遗产地经济、社会、环境、文化影响的总体影响进行定量归纳,并重点利用对应分析法分析了不同性别、年龄及学历的受访者对旅游影响的感知差异。     

THE X-RAY FLUORESCENCE ANALYSIS OF MEDIEVAL DURABLE BLUE SODA GLASS FROM YORK MINSTER

The chemical composition of durable blue soda glass dated to the twelfth century from York Minster, both from the windows and excavated within this building, has been determined by X-ray fluorescence spectrometry. The analytical data are compared with results from specimens of similar date, colour and composition from Old Sarum and Winchester in England and Chartres Cathedral in France. Multivariate analysis of the compositional data reveals that this unusual blue glass may be classified into three principal groups the possible origins of which are discussed. The specimens in one of them are of particular technological interest since they may have been produced from Roman, or slightly later, glass in a manner referred to by the twelfth century monk Theophilus. It is shown that medieval stained glass of the soda-lime-silicate type, vis-a-vis that containing potash as the predominant alkali, is not as rare as hitherto believed.     

THE ESTABLISHMENT OF A DATA BASE OF NEUTRON ACTIVATION ANALYSES OF WHITE MARBLE*

The establishment of a data base of trace element analysis results obtained by neutron activation analysis of 183 marble samples, each weighing about 200 mg, from eight different quarrying localities for use in provenance studies is described and a summary of the results presented. The problems of sampling museum artefacts are discussed, and details of tests of the reproducibility of the technique are given together with those obtained from multiple-samples from single museum objects. Replicate analyses of a marble standard are also discussed. Thus these data are a measure of the accuracy and precision of the technique, as well as allowing an assessment of the variation in trace element composition within quarry sources and single blocks of marble, as used for artefacts.     

AN INVESTIGATION OF THE PROVENANCE OF THE ROMAN AMPHORA CARGO FROM THE PLEMMIRIO B SHIPWRECK

Eighty-six Roman amphora sherds from the Plemmirio B shipwreck, off Sicily, have been analysed by neutron activation analysis. A large group representative of the amphora cargo, mainly of forms Africana 1 and Africana 2A (from the area of modern Tunisia), was subsequently defined. No differences between Africana 1 and Africana 2A samples were observed, thus implying a similar origin for both forms. The provenance of this cargo group was then investigated by comparison with a Roman amphora kiln data base. After elimination of the more mobile elements it was shown that the cargo amphorae were more likely to have been manufactured at kilns around Sullecthum rather than Leptis Minor. The analytical conclusions are thoroughly consistent with the known archaeological information.