The in situ preservation of archaeological remains: using lysimeters to assess the impacts of saturation and seasonality

Recent research has studied the effects of seasonal variability on waterlogged burial environments. In a new approach to the study of archaeological contexts, the use of controlled laboratory conditions via lysimeters has enabled new insights into the nature of short term fluctuations in saturation, and the impact that these can have on burial contexts. In addition, the protocols used have facilitated interesting insights into burial environments and the way in which fluctuations in saturation and seasonality can impact on the contained organic components within them.     

农村居民点用地整治潜力测算研究——以广东省五华县为例

以广东省五华县为例,以行政村为单元,在政策指标测算法的基础上,从自然环境状况、经济保障能力和社会因素等3方面构建理论潜力修正模型,将理论潜力修正为可实现潜力,并根据土地适宜性评价估算增加耕地潜力,以期为科学编制农村土地整治规划提供依据。研究表明,五华县农村居民点用地布局分散、规模小、空间差异显著,呈现出沿河谷、沿交通线路分布的典型特征。到2020年,农村居民点整治理论潜力为5683.91 hm²,北部村庄的整治潜力较大;可实现潜力修正系数为0.54,与理论潜力相差较大,各行政村之间差异明显;新增耕地潜力系数介于0.32-0.94,预计新增耕地1943.41 hm²,琴江、五华河沿线村庄的新增耕地潜力较大。建议实施差别化的农村居民点整治对策,推进五华县农村土地整治。     

基于空间特征的秦巴山区农村居民点整理分区与潜力测算

整理分区划定和整理潜力测算是农村居民点整理的核心内容。本文综合地形位、缓冲区、可达性、景观指数和Voronoi 图,引入空间分异特征指数,定量分析农村居民点用地特征,实现整理区合理划分;改进潜力测算模型,结合经济社会、土地利用、农户意愿因素,构建整理潜力综合评价指标体系,以秦巴山区竹溪县为例进行实证研究。结果表明：竹溪县农村居民点空间分异特征指数值位于0.0433-0.8038 之间;全县农村居民点可分为优先整理区、重点整理区、优化调控区和城镇发展区,现实潜力904.63 hm²,仅为传统潜力的65.42%;根据各乡镇潜力系数,划分为3 级潜力区。空间分异的潜力测算、整理区和潜力区划分,为确定因地制宜的整理模式和符合实际的整理时序提供依据。     

浙江余姚田螺山遗址室内与现场加固试验研究

田螺山遗址是我国第一处实行原址保护和展示的南方古遗址,发掘后打破了遗址原来所处的稳定环境,导致遗址出现了一些病害。为了使得该遗址较好地保存下去,本文分析了该遗址土壤的理化性质,在此基础上,选用CB材料对该遗址土样进行了室内及现场加固试验。加固前后土样耐水性、PH值及强度等表征的对比表明,加固后的土样具有较好的耐水性,抗剪强度参数粘聚力有明显的增大,从而增加了土壤颗粒之间的粘聚力。现场小面积加固试验表明,保持了遗址原貌,渗透性好,未见表面开裂现象,同时强度也有很大的提高。     

挖掘初中作文教学的学生潜力

学生作文语意表达不清,枯燥无味,主要是头脑中积累的词汇句子太少。只有让学生多读,才能开拓学生的思路,提高学生的写作能力。知识积累是过程,熟练运用是目的。在习作中,要教育学生恰当运用多种修辞手法表达语意,增强文章的感染力和语言的说服力,使抽象的内容具体形象生动。     

中国省域旅游业发展潜力的比较研究

对区域旅游产业发展潜力的测评,可以反映区域旅游产业发展的后续能力和未来前景。通过构建区域旅游产业发展潜力评价指标体系,运用因子分析法,借助SPSS统计分析软件,从旅游业产业发展角度出发,对我国31个省、市、自治区旅游业发展潜力的差异进行了量化研究。研究表明,我国东部大部分省域具有较强的旅游产业发展潜力,中部大部分省份旅游产业发展潜力居中,而西部大多省份的旅游产业发展潜力较弱,这与我国经济发展的差异基本上相似。同时,研究也发现,旅游发展潜力的强弱分布基本上与旅游竞争力的强弱分布是一致的。     

传统旅游目的地生态旅游潜在市场及开发策略初探——以四川峨眉山风景区为例

对生态旅游和生态游客的概念进行了综述,通过面访调查和侧面观测技术,研究了峨眉山生态旅游潜在客源市场的基本状况,划分了游客的生态类型倾向度,得出他们多属一般型和组织型生态游客的结论。建立多种数学模型估测了生态旅游的市场规模,从市场分析的角度,提出了峨眉山生态旅游的基本开发策略。     

Unexpected Wind Power ‘Potentials’: The Art of Planning with Inherited Socio-Geographical Configurations (France)

Abstract

The deployment of wind power induces deep changes in landscapes and territories. The politicization of wind power generates new ad hoc collectives. In the French case, because of the institutional framing resulting from landscape and wind power policies (centralization, feed-in tariffs, private developers), collectives of emerging wind power landscapes are regularly set apart from wind power planning processes. This paper explores the extent to which these recompositions and new collectives could be part of emerging wind power potentials. The empirical evidence stemming from our case studies shows that wind power technology, like any other technology, is not endowed with a potential per se. Wind power potentials differ – ‘capitalistic’, ‘controversial’, ‘negotiated’, ‘conditional’ – depending on planning processes and inherited configurations. The notions of striated space and smooth space enable us to adopt a relational perspective on these emerging collectives and to account for the role of inherited socio-geographical configurations and planning processes.     

To the barracks: the President,the military and democratic consolidation in Portugal (1976–1980)

After two turbulent years in which different pathways for the future of the political and institutional framework of Portugal clashed, the country began a process of consolidation of the democratic institutions delineated between 1975/6. However, the role played by the military in the fall of the previous dictatorial regime and the fragility of the new democratic institutions did not allow their immediate withdrawal from political life. The President of the Republic was a military man and the political parties had agreed to maintain an unelected sovereign body, the Council of the Revolution, which only dissolved in 1982. Based on primary sources that only recently became available, this article presents some elements that help to understand the success of democratic consolidation in Portugal. This long process should not be interpreted as a confrontation between civilians, desirous to put an end to military tutelage, and the military, who at all costs sought to keep their privileges. The dividing line should be placed between those who defended the maintenance of the status quo, and the supporters of military subordination to the civil power.     

Holocene paleoshorelines,water levels and submerged prehistoric site potential of Rice Lake (Ontario,Canada)

Rice Lake, located in the eastern Great Lakes of North America, has a high density of prehistoric (11–0.5 ka BP) terrestrial archaeological sites. It has been speculated that a large number of sites are submerged on the lakebed, as lake levels have risen >9 m since the arrival of Early Paleoindian peoples (∼11 ka BP). In order to better understand the submerged landscape and its archaeological potential, a detailed bathymetric survey and sediment-coring program was conducted across a 30-km² area of northeastern Rice Lake. Changes in Holocene water levels and shoreline positions were reconstructed by integrating core data with a digital elevation and bathymetric model (DEBM) that accounted for differential isostatic uplift and basin sedimentation. The DEBM was used to generate a series of maps showing changes in the lake paleobathmetry and paleogeography and areas of prehistoric archaeological potential.