Paleoparasitological results from coprolites dated at the Pleistocene–Holocene transition as source of paleoecological evidence in Patagonia

Coprolites attributable to humans, dated from the Pleistocene–Holocene transition, obtained from the archaeological site Cerro Casa de Piedra, Santa Cruz Province, were examined for parasites. The feces were processed by rehydration and spontaneous sedimentation using conventional parasitic procedures. Helminthic eggs recovered were identified as Trichuris sp., Calodium sp., other capilariids, and ancylostomid (Nematoda), probably Hymenolepis sp. and anoplocephalid (Cestoda); one oocyst attributable to Eimeria macusaniensis (Apicomplexa) was also found. According to the life-cycles and specificity of the parasites found, it is possible to suggest that some species (i.e., E. macusaniensis and Calodium sp.) represent parasites in transit or pseudoparasitism. Paleoparasitological results revealed the existence of an intensive relationship between parasites and humans in the Pleistocene–Holocene transition in Patagonia. Evidence suggests an early association among parasites, rock shelters and hunter–gatherers in the region. It is also postulated that the ancient lifestyles associated with caves and rock shelters were conductive to illness.     

中国旅游创新的回顾与展望:基于文献的研究

伴随改革开放30年进程,中国旅游产业不断走向内生驱动、创新发展之路。其在制度体制机制创新、理论创新等理论研究领域以及区域旅游创新、旅游企业创新等实践研究领域取得了初步成绩,但距离西方同类研究仍有较大差距。本文采取文献统计及文献分析法进行研究,揭示其基本特点,对中国旅游的创新研究主要领域进行文献研究综述,总结其研究的增长规律,立足于旅游产业创新研究的国际趋势和中国实际需要,最后对中国旅游的创新研究主要领域进行了展望。     

Acoustics and Levantine rock art: auditory perceptions in La Valltorta Gorge (Spain)

This article explores the relevance of acoustics as a factor for in the production and active use of Levantine rock art in Spain. The renowned rock art area of La Valltorta Gorge serves as a case study. Two experiments are described; the first assessed whether the sites with the most painted motifs had better acoustics than those with fewer motifs. The second tested which areas in La Valltorta Gorge had better acoustics and whether there was a difference between the acoustics of the decorated area and the contiguous sectors of the Gorge where no paintings have been found. In both experiments different sounds and pitches were used. The results suggest a strong relationship between the painted areas and the sonority of the place, with the major sites generally having provided the best results, with the exception of the sonority when facing the rock art panels. It is suggested that La Valltorta Gorge was chosen to be decorated with a view to increasing the perceptual impact of the rituals that may have been held at rock art sites due to the amplification caused by the echoing and resonance.     

Boiled versus unboiled: a study on Neolithic and contemporary human bones

Bones treated at low temperature do not present major modifications although, macroscopically, boiled bones may be distinguished from unboiled ones as they are smoother, lighter and more transparent. Such observations should correspond to textural modifications at a nanometric level and should depend on boiling time. In this study, contemporary human bones, boiled during various time intervals, were characterized using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and nitrogen adsorption (BET). The results were used to estimate the boiling time in four archaeological samples (Neolithic bones from Malalmuerzo cave, Spain). It is concluded, comparing Neolithic bones to contemporary ones and from the textural characterization at a nanometrical level, that two of the archaeological bones were boiled and that they were boiled for less than 6 hours.     

Making History, Talking about History

Making history—in the sense of writing it—is often set against talking about it, with most historians considering writing history to be better than talking about it. My aim in this article is to analyze the topic of making history versus talking about history in order to understand most historians' evident decision to ignore talking about history. Ultimately my goal is to determine whether it is possible to talk about history with any sense.
To this end, I will establish a typology of the different forms of talking practiced by historians, using a chronological approach, from the Greek andRoman emphasis on the visual witness to present-day narrativism and textual analysis. Having recognized the peculiar textual character of the historiographical work, I will then discuss whether one can speak of a method for analyzing historiographical works. After considering two possible approaches—the philosophy of science and literary criticism—I offer my own proposal. This involves breaking the dichotomy between making and talking about history, adopting a fuzzy method that overcomes the isolation of self-named scientific communities, and that destroys the barriers among disciplines that work with the same texts but often from mutually excluding perspectives. Talking about history is only possible if one knows about history and about its sources and methods, but also about the foundations of the other social sciences and about the continuing importance of traditional philosophical problems of Western thought in the fields of history and the human sciences.     

荥阳官庄遗址制陶作坊出土陶泥陶坯的科学分析

河南省荥阳官庄遗址发现了用于制陶的粘土原料以及未烧制的陶坯,这为研究西周中期以后中原制陶技术提供了不可多得的研究资料。为此,本研究利用能量色散X射线荧光光谱仪、X射线衍射分析仪分析了部分原料和陶坯,并使用马弗炉对其中的陶泥进行了烧制实验。结果发现,官庄遗址的制陶原料含铁量较高,烧制过程中析出磁铁矿等铁类矿物,且烧成陶色偏深;此外,制陶原料和同期陶片之间物相的趋同性和化学成分的聚类性,显示陶器本地生产的特性。研究结果为研究西周晚期至春秋早期时期制陶技术提供了基础材料。     

上海大都市区物联网产业集聚与空间演化

新兴技术产业的空间集聚与扩散对大都市区的空间结构有直接的影响,厘清新兴技术产业的空间分布和区位选择规律对新兴产业集群培育和大都市区空间结构调整都具有重要的政策意义。本文分析了上海市物联网企业的空间分布和集聚特征,结果发现初创期物联网企业在郊区集聚,随后向郊区其他区域扩散,并呈现出从单极向多极集聚转变的空间演化进程。通过构建负二项回归探究上海物联网企业的区位选择因素,结果表明制度因素和企业集聚效应对企业区位选择有重要影响。在产业发展初创期,企业区位选择受政府管制和市场机制双重影响,其中制度因素发挥了关键作用;而在随后的兴起期,产业集聚效应对新企业的入驻具有强大的吸引力。