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The purpose of this paper, prepared to present at the 2018 joint Canadian Association of Geographers (CAG) and International Geographical Union (IGU) regional conference, is to suggest three strategies, framed as proposals, that geography and geography education can deploy to “save the world.” The first proposal is to expand explicit instruction in spatial thinking to close gender‐based achievement gaps. The second proposal is to apply research from the learning sciences to develop persuasive geography curricula and instructional materials. The third proposal focuses on ways social media and geospatial technologies can be employed in civic education, an idea termed “spatial citizenship.” The paper suggests a re‐envisioning of geography education with an enhanced focus on teaching for, in, and about a world that fully appreciates difference and acts on that appreciation.  相似文献   

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Internal gravity wave perturbation velocity subject to constant dynamic viscosity and constant kinematic viscosity are approximately derived based on an energy conservation principle. When the dynamic viscosity is assumed to be a constant, the velocity at any height relative to the velocity at the saturation height, Zsat, is found to be solely dependent on the number of scale heights measured from Zsat. Gravity wave energy dissipation due to constant dynamic viscosity primarily occurs from one scale height below to one scale height above the saturation height. When the kinematic viscosity is assumed to be a constant, the perturbation amplitude either increases or decreases monotonically with height depending on whether the energy dissipation rate due, to viscosity, can offset the effect of the decreasing atmospheric density with increasing height. The derivations are made simple by assuming that the non-dissipative dispersion relation is applicable to the dissipative situation. The condition for the assumption to be approximately valid is also given.  相似文献   

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“Wiggle-matching” is a technique developed to provide calendar dates for a series of samples of known deposition rate using the now well-established high-precision radiocarbon calibration curve. In this paper we describe how the technique may be formulated within the Bayesian framework for statistical analysis and thereby permit the incorporation of uncertainties regarding the deposition rate. The methodology is illustrated by two archaeological examples.  相似文献   

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Abstract

Within tourism research, trust has largely been conceptualised from psychological perspectives, allowing insights into the mechanisms through which resident/stakeholder relations generate trust. Whilst this work is valuable in understanding dynamics of trust relations, such focus has meant less attention and has been given to the ways space influences trust in tourism contexts. Thus, a geographical approach is put forth to understanding trust in tourism. Through observation and semi-structured interviews concerned with the implementation of a community tourism project in southwest China, insights are provided illustrating how trust is inscribed in place. It is shown that in the Chinese context, cultural place-based specificities relating to pre-existing governance structures, social hierarchies, and the intersection of power, knowledge and trust influence the (in)abilities of NGOs to develop trust with specific residents. More meaningful dialogue between tourism research and geographical conceptualisations of trust is called for – as a way to attend to spatial and scalar differences in understanding of trust within tourism contexts.  相似文献   

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Romanesque sculpture can be profitably studied by trying to create the thought processes of those responsible for designing the programs. In particular, the thought pattern of associating various biblical stories which contain the same or similar words can be applied to the program of the little church of Neuilly-en-Donjon (Allier). It is clear that the various stories depicted are related to one another by sound - for example the Adoration of the Magi and the fall of Simon Magus and Mary Magdalen at the house of Simon the Pharisee. However, just as the genius of a monastic author such as Bernard of Clairvaux was the thematic unity he could use to organize these aural associations, so does the importance of the program at Neuilly derive from the sophisticated thematic unity of the program around the theological virtue of faith. From this study, we can learn not only to appreciate the genius of the designer of the program at Neuilly but also to attempt to unlock other secrets of Romanesque sculpure by applying this or other elements of contemporary thought processes to the parts of a program.  相似文献   

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A coarse Bayesian approach to evaluate luminescence ages   总被引:1,自引:0,他引:1  
This paper develops a simplified Bayesian approach to evaluate a luminescence age. We limit our purpose to the cause-effect relationship between the age and the accumulated dose. The accumulated dose is given as a function of the age and several others parameters: internal radionuclides contents, gamma dose rate, cosmic dose rate, alpha efficiency, wetness, conversion factors, wetness coefficients, fading rate and storage time. The age is the quantity we are looking for. Bayes’ theorem expresses the changes on the probability distribution of age due to the luminescence study. The information before study (prior) comprises what is previously known about the age and the archaeological model (cultural period, stratigraphic relations, type, etc.) as well as the parameters of the physical model. The accumulated dose consists in the data describing the measurement. The various stages of Bayesian approach were implemented using the software WinBugs. Simulated data sets were used in various models. We present various small models representing typical examples encountered in luminescence dating.  相似文献   

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Herders spend much time and energy seeking pasture and nurturing their herd animals in Mongolia. In turn, herd animals are the primary food source for herders in the form of meat and dairy products, feeding and nurturing the herding family. The overall herding principle strives towards a mutual balance across different scales within the body and the ecological food chain, resulting in reciprocal health and well-being. The powerful medicinal qualities of the blue and yellow pasque flower (yargui, Pulsatilla spp.) are valued in Mongolia, sought out in early spring by multiple species, including herders, goats and wild deer. Herding knowledge of goats and deer seeking out the pasque flower for medicinal purposes to expel gut parasites is an excellent example of Mongolian herding families’ awareness of their interdependent interconnections with other species as part of a larger surrounding ecology. However, this level of integration may not last, as herding families increasingly rely on introduced medicines, such as anthelmintics, bought from local pharmacies and wholesalers within rural townships.  相似文献   

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Romanesque sculpture can be profitably studied by trying to create the thought processes of those responsible for designing the programs. In particular, the thought pattern of associating various biblical stories which contain the same or similar words can be applied to the program of the little church of Neuilly-en-Donjon (Allier). It is clear that the various stories depicted are related to one another by sound - for example the Adoration of the Magi and the fall of Simon Magus and Mary Magdalen at the house of Simon the Pharisee. However, just as the genius of a monastic author such as Bernard of Clairvaux was the thematic unity he could use to organize these aural associations, so does the importance of the program at Neuilly derive from the sophisticated thematic unity of the program around the theological virtue of faith. From this study, we can learn not only to appreciate the genius of the designer of the program at Neuilly but also to attempt to unlock other secrets of Romanesque sculpure by applying this or other elements of contemporary thought processes to the parts of a program.  相似文献   

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The article proposes that anthropologists and historians attend to a 'landscape of powers' to understand the ways colonial and mission projects become actualised in on-going social relations. An expanding body of scholarship for the Melanesian region has focused on the way missionaries and colonial agents, as much as the diverse Melanesian peoples, attain power through rendering persons and places in specific forms. This is documented here for Fuyuge-speakers relations with colonial and mission projects during their early phase. Although the forms and consequences of power among each--Fuyuge, colonial, mission--is different, attention is devoted to the resultant and emerging patterns of these long-standing interactions and interventions. In particular, the article maintains that when such projects become locally actualised a landscape of powers is established. A landscape of powers is the multiply constituted arrangement of persons and places in an historical and ethnographically delineated context.  相似文献   

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Traditional x-ray images of mummies may reveal foreign objects lodged within the body or its wrappings, but can only give a vague idea of the material of which these objects consist. More precise information may be obtained by means of computed tomography which delivers not only a three-dimensional reconstruction of the object's shape, but also a measurement of radiodensity and a representation of the radiological structure.While the density values and structures of body tissues and substances are well documented in radiological publications, little data exist of material not usually found in the human body. The aim of this study is to analyse the radiological density and structure of a series of test objects, so that these may serve as a reference for comparison with potential foreign objects found in mummified remains. Value and limitations of this method are discussed and the practical application is demonstrated through four examples.  相似文献   

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It is widely recognised that the Responsibility to Protect (RtoP), adopted by heads of state and government in 2005, is an important new international principle. Australia has been one of the principle's most significant contributors, with prominent Australians and governments from both sides of politics contributing to its development, emergence, and implementation. This article traces and explains Australia's contribution to RtoP and asks what more it might do to assist in its implementation. It argues that Australia's commitment to RtoP is informed by a synergy of values and interests and has been strengthened by the Rudd government's reengagement with multilateralism. It concludes by calling for the development of a whole-of-government strategy for implementation and by suggesting some policy avenues that might be considered.  相似文献   

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