First Insights into the Technique Used for Heat Treatment of Chert at the Solutrean Site of Laugerie‐Haute,France

The earliest evidence of flint and chert heat treatment was found in the ~21.5–17 ka old European Solutrean culture. The appearance of pyrotechnology as part of the production of stone tools has important implications for our understanding of Upper Palaeolithic technological evolution and the specific adaptations during the last glacial maximum in Europe. However, the techniques and procedures used to heat‐treat rocks during the Solutrean remain poorly understood. No direct archaeological evidence has so far been found and the most promising approach is to understand these techniques by determining the parameters with which flint and chert were heated at that time. In this study, we investigate the heating temperature of 44 heat‐treated laurel‐leaf points from Laugerie‐Haute, using a non‐destructive technique based on infrared spectroscopy. Our results document that most of the artefacts were heated to a narrow interval of temperatures between 250 °C and 300 °C. This indicates a standardized technique that allowed to created similar conditions during successive heating cycles. The implications of these results for our understanding of the technical complexity during the Solutrean must be discussed in the light of different heating techniques used at different places and periods.     

Views and Commentaries: Composed Versus Simple Pasts: About Archaeologists and Their Partners

Partnership is an equitable exchange of knowledge. In fact, the very nature and indisputability of imported and taught knowledge—the scientific one and here archaeological—question the nature of the traditional and ordinary knowledge of peoples concerned. These two kinds of knowledge differ in the nature of the facts recognized by each of them: scientific facts or tacit common knowledge facts built differently, and in the number and strength of the external allies they succeed in mobilizing. Even if they remain translatable one into the other at a certain cost, they are engaged in a race. The result seems lethal for traditional knowledge unless powerful nonscientific allies, opposed to this leveling standardization, get involved with researchers aware of the stake for the South but also for the North, committed for some centuries to a rationalization supported by science, its technics, and the socioeconomic powers able to fund them.Le partenariat est un échange équitable de savoirs. En réalité, la nature et l'indiscutabilité du savoir importé et inculqué—le savoir scientifique et ici archéologique—met en cause la nature du savoir ordinaire et traditionnel des peuples concernés. Ces deux formes de savoirs diffèrent par la nature des faits reconnus par chacun d'eux: faits scientifiques ou faits du savoir observationnel ordinaire, construits différemment, et par le nombre et la force des alliés extérieurs qu'ils réussissent à se donner. S'ils sont traduisibles l'un dans l'autre à un certaincoût, une course est néanmoins engagée entre eux. L'issue en semble fatale aux savoirs traditionnels à moins que des alliés puissants non-scientifiques, opposés à ce nivellement uniformisateur, s'engagent à leurs côtés avec l'appui des chercheurs conscients d'un enjeu qui concerne certes le Sud, mais aussi le Nord engagé depuis quelques siècles dans une rationalisation appuyée sur la science, ses techniques et les puissances socio-économiques capables de les financer.     

Teaching and learning in the tropics: an epistemic exploration of “the field” in a development studies field trip

Development studies employs theories, tools and methods often found in geography, including the international field trip to a “developing” country. In 2013 and 2014, I led a two-week trip to Ethiopia. To better comprehend the effects of “the field” on students’ learning, I introduced an assessed reflexive field diary to understand what the field trip experience teaches students about themselves and their relationship to the field. In this paper, I present critical reflections on “the field” that speak to a provocative concept – “the tropics”. These reflections illuminate prevailing challenges in the study and practice of development and suggest a way forward.     

一个完整的复审程序范例——汉司法简《奏谳书》研究之一

张家山汉简《奏谳书》"黥城旦讲乞鞫案"比较全面地反映了秦国司法制度中的复审程序。这种程序包括:重审程序的提起(乞鞫)、书面审理(视其故狱)、开庭审理(讯与诊)、复审判决(鞫之)以及善后处理(谓与誉)。     

Can Voluntary Environmental Regulation Work in Developing Countries? Lessons from Case Studies

Hamstrung by weak institutions that undermine conventional environmental regulatory tools, policymakers in developing countries are increasingly turning to voluntary approaches. To date, however, there have appeared few evaluations of these policy experiments. To help fill this gap, we summarize arguments for and against the use of voluntary regulation in developing countries, review the nascent literature on the topic, and present case studies of agreements negotiated between regulators and leather tanners in an industrial city in Mexico, a national environmental audit program in Mexico, and a national public disclosure program in India. Admittedly few in number, these three case studies nevertheless suggest that although voluntary environmental regulation in developing countries is a risky endeavor, it is by no means doomed to failure. The risks can be minimized by emphasizing the dissemination of information about pollution and pollution abatement options and by avoiding voluntary approaches in certain situations—those where regulatory and nonregulatory pressures for improved environmental performance are weak and where polluters can block quantified targets, individual sanctions for noncompliance, and other widely accepted prerequisites of effective voluntary initiatives.     

生态关系视角下国家高新区的演进机制与发展路径

基于对国外文献的综合分析,借助网络对国家重点高新区的历史演变和发展动态进行了理论审视。在对国家高新区进行抽样调查的基础上,迁移运用协同进化理论、复杂性理论和演进经济理论,采取自上而下的方法,对国家高新区的演进机制和发展路径进行了理论抽象,构建了"技术创新过程及成果产业化"、"高新区演进机制"、"技术极功能组织"以及"高新区发展路径"等概念模型;对高新区的创新、创业环境(生境结构)、孵化器体系以及产业集群的组织结构等,进行了深入的生态学解析。     

中国特色革命理论和中国特色社会主义理论的形成及历史启示

中国共产党在88年的奋斗历程中,创立了两个特色理论：中国特色革命理论、中国特色社会主义理论。这两大理论的形成和发展既有深刻的时代背景,又有一个逐步形成的历史过程。两个特色理论,不仅内涵丰富博大精深,富有中国特色,而且赋予我们深刻的历史启示。     

领导干部问责制刍议

领导干部问责制是问责制的中心环节和切入点。近年来领导干部问责在实践和制度建设上均取得了进展,但问责主体、问责范围、客体界定、问责程序方面仍有完善的空间。为此,需进行相应的制度建设,以促进领导干部问责制适应现实的需要,并为中国特色问责制度的确立奠定基础。     

机械教学之我见

针对机械专业课的特点,从教材内容出发,就如何抓住教学重点,正确处理重点、难点,新课的导入,教学方法的选择及课堂辅导进行论述。明确了课堂教学的步骤和方法。     

THE GOVERNMENT’S BUSINESS?

The engagement of Swedish industry in the Liberian American–Swedish Minerals Company (LAMCO), which mined iron in Liberia between 1963 and 1989, was the largest Swedish commercial investment in Africa during the Cold War. In this paper I investigate how political and administrative actors of the Swedish government conceptualized the link between private and public interests in the context of LAMCO’s operations, and how this shaped Swedish government policy towards the company and Liberia. I identify two phases: a phase of almost unanimous political support for LAMCO and close Swedish–Liberian relations from ca. 1955 to 1965, and a more fragmented phase following 1965, during which LAMCO was increasingly understood as a political liability. My findings show how business interests could figure into Swedish foreign policy during the Cold War, highlighting the coherence with which Swedish industry and government acted in relation to the commercial interests in Liberia before ca. 1965, but also the lack of coherence – between government and industry as well as within the state apparatus – that followed the turn to a more activist policy after the mid-1960s.