Radon Predictions with Geographical Information System Covariates: From Spatial Sampling to Modeling

Radon (Rn) is a potentially toxic gas in soil which may affect human health. Assessing Rn levels in soil gas usually requires enormous efforts in terms of time and costs, since the sampling protocol is very complex. In most cases, the variable under study is sparsely sampled over the domain and this could affect the reliability of the spatial predictions. For this reason, it is useful to incorporate, into the estimation procedure, some auxiliary variables, correlated with the in soil gas Rn concentrations (primary variable) and more densely available over the domain. On the basis of this latter aspect, it is even better if the covariates are derived from a geographical information system (GIS). In this article, the Rn sampling protocol used during a measurement campaign planned over a risk area is described and the process of deriving GIS covariates considered as secondary information for predicting the primary variable is clarified. Then, multivariate modeling and prediction of the Rn concentrations over the domain of interest are discussed and a comparative study regarding the performance of the prediction procedures is presented. Rn prone areas are also analyzed with respect to urban and school density. All these aspects can clearly support decisions on environmental and human safeguard.     

Methodological aspects of SANS and TOF neutron diffraction measurements on pottery: the case of Miseno and Cuma

Small angle neutron scattering and neutron phase analysis techniques have been for the first time jointly employed to extract microscopic parameters of ceramic samples prepared under controlled conditions, in an attempt to establish a protocol for deriving information on the firing process. Data have also been collected on two series of early medieval samples from the Italian regions of Cuma and Miseno. The variation of the microscopic features observed on these samples could mirror some technological evolution in the period spanning from the 6th to the 12th century AD.     

《小尔雅》综述

本对古今《小尔雅》研究作一综述,以见我国语言学界《小尔雅》研究的概况。     

韶乐探源:苗蛮文化对中原早期文明的影响

古今学界都认为韶乐是中原早期发明的礼乐制度．与处在蛮荒地区的苗蛮化并无关系。但根据可靠献．隋置韶州得名于韶石,韶石得名于韶乐．可知粤北地区的古化当与韶乐有联系。如果进一步探索．先秦献所载帝舜奏韶乐的传说和夏启舞九韶的“天穆之野”都在今湘南、粤北的南岭地区,韶关石峡遗址出土的6人舞蹈实物显示这一地区的先民早在5000年前左右就对乐舞情有独钟。因此．韶乐当是中华明初期南北方化交流、融合的产物．是南方苗蛮化对中原早期明的形成作出的重要贡献。     

辽金人的忠孝观

忠孝是中国古代伦理的重要内容 ,中国传统文化的组成部分。契丹、女真早期本无忠孝观念。辽金建立后 ,随着社会的发展 ,儒学的传播 ,统治者的倡导 ,民族的融合等 ,忠孝观念逐渐形成和发展起来。忠孝在辽金及后来元人那里 ,超越了民族、地区和国别的畛域 ,人们对外族、邻国、敌国乃至前朝的忠臣孝子同样表现出尊重和崇敬。 1 0 - 1 3世纪 ,忠孝已成为汉、契丹、女真、蒙古等各民族一致认同的伦理道德观念和行为规范 ,从而体现了中国传统文化的历史继承性和强大凝聚力。     

浅析商周时期江南区域文化的独立性——以宁镇地区青铜文化为例

江南地区的商周时期文化与先周青铜文化进行比较,能够发现本地区的青铜文化不仅具有明显的独立性和相当高的水平,且与先周乃至于西周都有着相当大的差别。江南宁镇地区是一个区域文化相对独立与发达的地区,同时与黄河流域的华夏族文化有相当的交流。如这一地区这一时期有政权存在的话,则可将之视为一独立的方国。     

墨面哥人移民美国的历程

墨西哥移民在美国移民史上占有重要的地位,是"-3今美国最大的移民群体.作为一种历史现象,墨西哥人向美国较大规模的移民开始于20世纪初前后,概而观之,除20世纪30年代因大萧条而短暂中断外,墨西哥移民一直呈现出持续的高水平特征.墨西哥人移民美国的历程大致可以划分为四个阶段,与之对应的是四次移民浪潮:第一次浪潮从19世纪末20世纪初到1929年美国经济大萧条;第二次移民浪潮从1942年美墨双方签署<布拉塞洛计划>到1964年该计划终结;第三次浪潮从1965年移民法颁布到20世纪80年代中期,此间大量墨西哥无证件移民流入美国;第四次浪潮从<1986年移民改革与控制法>颁布至今.墨西哥人移民美国源于一系列历史、地理、经济和社会因素,根植于关墨两国总体社会经济背景之下.     

秦汉政治史观的演变历程

秦汉时期共有三种主要的政治史观：以五行相胜原则运转的五德终始说、以五行相生原则运转的汉为尧后说,以及董仲舒所创三统说。秦到汉武帝时,五行相胜的五德终始说占政治史观的主流,汉昭帝以后则被五行相生的政治史观代替,董仲舒创立的三统说在汉武帝时形成,此后便和五行相生政治史观平行发展。这三种政治史观都与阴阳五行有密切关联,并对秦汉乃至以后两千余年封建社会产生深远影响。     

"吧国公堂"档案之《公案簿》述略

<公案簿>是现存吧国公堂(巴达维亚华人评议会)档案中的核心部分,所涵盖的时间范围大约为150年(1787-1940年)左右.<公案簿>的内容主要有两个方面一是对吧国公堂有关华人的各类案件的会审记录;二是对有关吧城华人社区重要事件和重大决议的记录.对涵盖这一时期最为原始的记事录的内容及案例加以考察和分析,一方面可以洞察一个处在多种变革时期具有代表性的华人社区的社会生活及其行政管理的内幕,另一方面也可以从中了解各个历史阶段荷印殖民政策的变化及其对当地华人社会的影响.     

Bear dentine aspartic acid racemization analysis: a proxy for the dating of Pleistocene cave infills

A high correlation between chronometric determinations based on aspartic acid racemization ratios and radioactive dating methods is described from samples of cave bear (Ursus deningeri and Ursus spelaeus) dentine. For samples from a very restrictive environment, as deep cave bear sites are (in view of their highly stable geochemical and thermal history), an age calculation algorithm was obtained. It has been found that there is a very close relationship between collagen preservation, from total aspartic acid in the > 3500 D fraction, and the amino acid racemization.