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101.
An experimental approach in order to investigate the possibility that some Italian limestones were used for the production of Roman Cement is proposed. Three types of Pietra Alberese, a marly limestone used since Roman times for the production of “lime” in Tuscany (Italy), were selected. By burning of these stones, specimens of binders were realized. The characteristics of these binders were compared with the binder obtained by burning a French marly limestone commercially used for the production of Roman Cement.

All samples of carbonate stones were preliminarily characterized from the chemical, mineralogical, and petrographic point of view. The colorimetric coordinates were measured on both rock samples and hardened binder samples. The analysis carried out shows that Pietra Alberese with an high content of clay minerals develops a similar microstructure with respect to that developed by the French marly limestone used for the production of Roman Cement.  相似文献   

102.
自从柴尔德提出"新石器革命"的论断以来,农业起源成为世界考古学战略性研究的一项重要课题。各学科学者运用多种理论从各个角度探讨这一革命性进程,试图回答农业是何时、何地、为何和怎样起源的。西方学者为此作了不懈努力,取得了丰硕成果。本文简要回顾了西方农业起源的研究历程,然后从环境、社会和人类文化、认知力三个方面对西方有关农业起源的理论或假说进行总结和评述,旨在进一步促进国内外研究者对农业起源进行深入的研究。  相似文献   
103.
This paper aims at a comprehension of existing intra-/inter-regional production flows in a dynamically transforming, export-oriented economy in Central Europe. Drawing on evolutionary economic geography combined with input–output approaches, we have assessed the sectoral compositions and relationships between regions from a buyer-supplier interactions perspective. Inspired by contemporary literature we applied concepts of regional embeddedness, relatedness and vertically related variety. Conceptually we argue that the degree of embeddedness of regions is differentiated and spatially non-random. The differences will depend to a large extent on the economic characteristics and on the ability of key actors and institutions in these regions to respond actively to changing opportunities and threats. Empirically we have found: that economically more developed regions are relatively more embedded in terms of production flows and have greater sectoral variety, whereas regions with high export-dependence are economically backward, and have higher concentration of industry and negative associations with innovation activity and overall innovation potential. The intensity of interregional production flows increases as the regional economies vary more from each other, but beyond a certain level of structural difference the rate of mutual flows decreases; and that the intensity of interregional relations depends on the relatedness of the economic bases.  相似文献   
104.
Abstract

This article gives insights into an inter- and transdisciplinary research approach designed to enhance the planning of climate change adaptation responses at urban-regional level. What makes interdisciplinary approaches to adaptation action unique is its ability to unravel the complexity of climate change and the interwoven processes it entails. It is the planning aspect here that makes stakeholder involvement crucial. Hence in contemporary climate change research the science-policy interface takes centre stage, generating response capacity and exchanging ‘usable’ information with decision-makers within the framework of a transdisciplinary approach. Climate action plans and climate adaptation strategies, for example, have the potential to unite sectors and levels of decision-making around an integrated planning approach. This article discusses the challenges and constraints of the inter- and transdisciplinary research approach developed for a Metropolitan Region of Santiago de Chile (MRS).  相似文献   
105.
In the introduction to his Spalt und Fuge, Hans-Jörg Rheinberger points to the possibility that we are currently experiencing a new turning point regarding forms of experimentation, which is characterized by the growing importance of high-throughput methods and big data analytics. This essay will explore the thesis that data-intensive research indeed constitutes a form of post-experimental research by interrogating research practices in precision medicine. Section 1 will introduce this thesis and highlight salient features of precision medicine as an example of post-experimental research. Section 2 suggests approach as a category that is broader than experimental system, as discussed by Rheinberger, and can serve to analyze and compare diverse forms of research, including experimental and post-experimental practices. The essay concludes with a reflection on how categories developed for the historiography of recent science might require an update when the science or its context changes (section 3).  相似文献   
106.
This article is one of the first tourism studies to adopt the asset-based community development (ABCD) approach. It explores the potential of the ABCD approach to tourism development as a poverty alleviation strategy. The study was undertaken in Lhasa, Tibet. Photo-elicitation interviews, focus group interviews, and a questionnaire-based survey were used. It was found that the Tibetan young hosts had a good knowledge of local assets. They identified five categories of local assets as having the most potential to be developed as tourism attractions in the near future. The identified tourism assets were world heritage sites, religious sites, traditional Tibetan yards, daily life and customs, and Tibetan medicines – the last four assets were undeveloped ones. Clear perceptions on the value of the assets, as well as the difficulty and desirability of their development in the future were also mapped, using repeated measures one-way analysis of variance. Through the process of assessing the tourism assets, this study identified in a preliminary way that adopting the ABCD approach to poverty alleviation through tourism is feasible. By mapping other assets in the community (e.g. human, social, financial, and physical), a further and more complete test of the approach can be undertaken. Examining these assets may also reveal more ideas for the community's common future. Theoretically, this work adds to the conceptual approaches for community-based tourism development work. Methodologically, this study illustrates research techniques for obtaining emic voices in a marginal and politically charged environment. The extensive use of the participants’ images as a basis for discussion was of particular note. Practically, this research offers both general and detailed suggestions for the Lhasa Government and its community work, especially ways to approach and access community perspectives.  相似文献   
107.
The success of the group approach in rural micro‐finance among women has inspired the tendency to look at all networking as essentially good and desirable in rural community development, without acknowledging the entrenched caste, class, ethnic and religious hierarchies that lead to diversities among women. Government schemes designed for poverty alleviation among rural women tend to be influenced by concepts and models that have been successful elsewhere, but do not take into account the diversities of situations at the local level. Internationally popular catchwords are used indiscriminately without questioning how these concepts can work effectively in the specific local context. This paper examines why some ‘self‐help groups’ fail by using the Development of Women and Children in Rural Areas (DWCRA) experience in India. The empirical survey was done over a period of two years in Burdwan, a relatively rich agricultural tract located in eastern India. We argue that whilst the ‘group’ has inherent benefits, it must never be allowed to become the paradigm in developmental policies for women.  相似文献   
108.
通过多理论思辨,本文认为地方感理论研究中,不同流派之间存在的三对矛盾:流动性与在地性的矛盾,历时性与即时性的矛盾,个体经验与集体意识的矛盾。为调和这三对矛盾,本文探索新的研究方法,即地方感的心象运动路径,主要包括以下内容:①心象与心象运动的概念;②心象运动的认识论;③心象运动论的研究方法。通过这些理论探索,提出地方感研究的新路径,为城市政府的社区管治、提升居民的归属感提供政策参考。  相似文献   
109.
ABSTRACT

In recent years, there has been sustained critique of the conceptual and normative foundations of UK cultural policy – the paternalism of ‘excellence and access’ and the neoliberal logic of ‘creative industries’. Whilst these critiques are well established, there is little work offering alternative foundations. This paper makes a contribution to this task. It does so in three ways. Firstly, by identifying ‘cultural democracy’ as a key discourse offering a counter-formulation of what the aims of cultural policy could and should be, and analysing uses of this term, it highlights the need to more effectively conceptualize cultural opportunity. Secondly, drawing on research with one UK-based initiative, Get Creative, the paper identifies a particularly consequential aspect of cultural opportunity: its ecological nature. Thirdly, it shows that the capabilities approach to human development provides ideas with the potential to help build new conceptual and normative foundations for cultural policy. Proposing a distinctive account of cultural democracy characterized by systemic support for cultural capabilities, the paper concludes by indicating the implications this may have for research, policy and practice.  相似文献   
110.
田紫灵  刘晨 《人文地理》2020,35(4):9-16
参与式摄影在近十年来受到西方人文地理学研究的关注。这种研究方法要求被研究者在给定的主题下主动拍摄照片或视频,以具象化其日常生活和活动路径,从而展现其动态的、身体化的、非表征化的行为过程。这一方法不仅能促使研究者和被研究者之间的有效沟通,还能唤起被研究者的情感和记忆,从而促进调研的开展。本研究通过对西方人文地理学研究中相关文献的梳理,对参与式摄影的主要类型、步骤及其在西方人文地理学研究中的应用范围、优势和局限性等进行了介绍,并梳理了参与式摄影在西方人文地理学研究中的应用价值和意义。在此基础上,本研究指出国内未来研究可应用参与式摄影方法的三个方向:①边缘群体和少数族群的地方感及其对地方意义的建构;②日常生活和微观空间地理研究;③社会现象和生活环境的变化对人们地方认同的影响。  相似文献   
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