首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
In anticipation of a future crewed mission to Mars, the international non‐profit organisation known as the Mars Society is currently establishing four mockup bases at which planetary surface operations simulations, equipment testing and personnel training exercises will be conducted over the next decade. These should provide valuable design data for, and raise public awareness about, plans to explore the red planet. One of these bases, which are organised around a habitat of the kind that is likely to serve as shelter for surface‐dwelling astronauts, is to be sited in central Australia under the name MARS‐OZ. To find a suitable location, the Mars Society Australia has conducted a ground‐truth survey of 15 potential sites as practical scientific analogues of the Martian surface, recording these in a specialised database. Each site was assessed on a set of geomorphic, science/engineering, logistic and visual analogue criteria. Six circular exploration zones 200 km in diameter were identified as clusters of the most significant, observed, comparative planetological features. These zones were then ranked to recommend a series of ‘landing sites’, at which future field seasons of exploratory science may be conducted.  相似文献   

2.
Early modern natural philosophers such as Francis Bacon are frequently seen as providing a legitimating ideology for British imperial expansion. Although this has been challenged by one recent study, much of Bacon's work on English colonisation remains unexplored. This article argues that far from being an ideological apologist for English colonisation, Bacon had two sets of colonial anxieties. The first derived from a tradition of civic humanism which concerned the moral corruption, dispossession of indigenous people and the greed involved in the British colonization of Ireland and America. Bacon's second anxiety was not moral but epistemological, and stemmed from his natural philosophy. For Bacon, colonies were not simply new commonwealths, they were places which potentially produced the natural knowledge vital for the recreation of man's original, epistemic empire over the world. Consequently, Bacon was not only interested in the morality of colonising, but also whether the knowledge produced in colonies was reliable. An exploration of Bacon's views on colonisation also offers us a point of entry into the scholarly debate about the relationship between Bacon's natural philosophy and his political thought.  相似文献   

3.
Abstract

As a direct consequence of exposure to microgravity, astronauts experience a set of physiological changes which can have serious medical implications when they return to earth. Most immediate and significant are the headward shift of body fluids and the removal of gravitational loading from bone and muscles, which lead to progressive changes in the cardiovascular and musculoskeletal systems. Cardiovascular adaptations result in an increased incidence of orthostatic intolerance (fainting) following flight, decreased cardiac output, and reduced capacity for exercise. Changes in the musculoskeletal system contribute significantly to impaired function experienced in the post-flight period. The underlying factor producing these changes is the absence of gravity, and countermeasures are therefore designed primarily to simulate earthlike movements, stresses, and system interactions. Exercise is one approach that has had wide operational use and acceptance in both the US and Russian space programmes, and it has enabled humans to stay relatively healthy in space for well over a year. Although it remains the most effective countermeasure currently available, significant physiological degradation still occurs. The development of other countermeasures will be necessary for missions of longer duration, for example for human exploration of Mars.  相似文献   

4.
The Sepik coast of northern Papua New Guinea is one of the most linguistically diverse places on earth despite communities there currently being connected into wide-reaching social and economic networks that cross language boundaries. One possible explanation for observed human diversity is that social connections were substantially less intensive prior to colonial pacification. As a proxy for human interaction, we compositionally analyzed 287 ceramic sherds from archaeological contexts using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to determine their place of production. Our results indicate that ceramics produced on Tumleo Island—currently the most important regional ceramic producer—were transported to other places on the Sepik coast after ∼1000 BP, suggesting that linguistic diversity on the coast has been maintained in an interactive environment for at least a millennium.  相似文献   

5.
As a direct consequence of exposure to microgravity, astronauts experience a set of physiological changes which can have serious medical implications when they return to earth. Most immediate and significant are the headward shift of body fluids and the removal of gravitational loading from bone and muscles, which lead to progressive changes in the cardiovascular and musculoskeletal systems. Cardiovascular adaptations result in an increased incidence of orthostatic intolerance (fainting) following flight, decreased cardiac output, and reduced capacity for exercise. Changes in the musculoskeletal system contribute significantly to impaired function experienced in the post-flight period. The underlying factor producing these changes is the absence of gravity, and countermeasures are therefore designed primarily to simulate earthlike movements, stresses, and system interactions. Exercise is one approach that has had wide operational use and acceptance in both the US and Russian space programmes, and it has enabled humans to stay relatively healthy in space for well over a year. Although it remains the most effective countermeasure currently available, significant physiological degradation still occurs. The development of other countermeasures will be necessary for missions of longer duration, for example for human exploration of Mars.  相似文献   

6.
Novgorod Oblast, in northwestern Russia, has been distinguished by a high rate of rural outmigration and depletion of agricultural labor resources. One key factor in slowing the flight from the land is an improvement in the quality and range of rural services. The impact of adequate services is shown by available data on the distribution of rural population by distance from service centers. The rate of decline of rural population is generally found to be lower in places near service centers than in more remote places. Since most of the rural places are too small to support service establishments, it is recommended that services be expanded in about 200 central places that show promise of future growth.  相似文献   

7.
人文地理过程内涵辨析与模拟探讨   总被引:1,自引:0,他引:1  
人文地理过程是陆地表层系统地理过程最重要的组成部分之一。本文从陆地表层系统科学的角度出发,探讨了人文地理过程的基本内涵及主要组成部分,指出人口迁移过程和经济集聚-扩散过程是人文地理过程最重要的要素过程,城市化和土地利用变化是人文地理过程最直接的空间表达形式;在此基础上进一步探讨了人文地理过程模拟的核心内容,包括要素模拟和综合过程模拟;提出了人文过程模拟的主要数据源获得途径与模拟方法,指出了人文地理过程模拟需要解决的几个关键问题。  相似文献   

8.
A unified system of settlement, defined as an interrelated network of places that is regulated for the benefit of society, is viewed as the most effective approach to overcoming socio-economic differences between town and countryside. Such a settlement system is viewed as ultimately replacing the present settlement patterns ranging from large urban agglomerations at one extreme to small rural places without adequate services at the other extreme. The unified settlement system is expected to insure roughly equivalent living and working conditions for all people within such a system. Some of the recent changes in Soviet settlement patterns are viewed as steps in that direction: an expansion of the network of large cities in connection with the economic development of new regions; the policy of industrializing small towns bypassed by the previous development of industry; the growing practice of establishing research organizations and branch plants in small towns to foster their development; the mechanization and industrialization of animal husbandry; the improvement of rural bus lines, providing access to service centers.  相似文献   

9.
This paper considers issues of sexual citizenship in light of new UK legislation that prosecutes the viewers of ‘extreme pornography’. Justified as an attempt to uphold public decency, government intervention seeks to prevent people seeing ‘extreme’ images not by limiting access to certain websites, but instead by intervening in the private consumption of these images. In this paper I draw on the discourses of those who have supported such intervention, and suggest that these arguments make a claim to space that defends the rights of some citizens over others. I examine the entwining of rights of expression, rights to identity and rights to safety. In conclusion, I argue that sexual citizenship is not just about the right to occupy actual physical places but also the right to inhabit the virtual—cyberspace. I hence argue that the internet plays a key role in transforming the sexual geographies of public and private.  相似文献   

10.
ABSTRACT

The aim of this article is to demonstrate: 1) that the root ??? plays a crucial role in Genesis16 and 22, where Hagar and Abraham see and acknowledge Yahweh, and Yahweh sees and shows solicitude; 2) that there is a close connection between Yahweh as ‘he who sees and he who is seen’, i.e. between his solicitude and his appearance, as expressed in the names for God and places in Gen 16,13-14 and Gen 22,14; 3) that there is a link between Yahweh’s appearance, his holy places, and his double promise; 4) that Genesis16 and 22 are variants of the same narrative with the same theological point, namely: Yahweh’s solicitude; and 5) that the theological criticism of God in Genesis 22 as an authoritarian being whose will may lead to violence being committed in his name, ignores the central message of Genesis 22, namely, God’s solicitude in rejecting human sacrifice.  相似文献   

11.
This paper explores the contribution that applied forensic entomology can make to our understanding of prehistoric mortuary behaviour. Samples of insect remains were recovered from a mummy bundle that has been attributed to the Chachapoya people who occupied the northern highlands of Perú from ca. AD 800 to ca. AD 1532. The insects were identified to the family level and used to create a hypothetical timeline of post‐mortem interval before the construction of the mummy bundle. The individual in question suffered from a number of blunt force insults to the head, followed by two and possibly three trepanation events. We speculate the initial insect colonisation to have taken place almost immediately following injury and subsequent surgery, occurring before the individual's death. Insect succession patterns and timing estimates for the appearance of periosteal reactive bone suggest that the individual was wrapped shortly following death. The application of such modern forensic techniques holds vast promise for addressing issues concerning Chachapoya mortuary behaviour and, further, these results can expand our understanding of mummy studies in general. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   

12.
Building on what I view as the inability of archaeologists to distinguish patterning in the treatment of the dead in the central Ohio Valley Middle Woodland (Adena and Hopewell combined), I suggest an interpretive shift to focus instead upon agency; that is, upon mortuary events as the products of individuals and teams performing ritual acts using relics of their dead. That said, the remains we interpret as persona become, in effect, the “abandoned projects” of that agency, and their interpretation in the archaeological contexts we excavate (accretional mounds and other forms of mortuary features) is hedged around with what I call interpretive ambiguity. This approach embraces what we see as the extreme mortuary variability characteristic of the time and place without denying that underlying mortuary beliefs were real and conservative. Rather, it focuses upon the interpretation of place and how historical events occurring in places reflect larger social interactions.  相似文献   

13.
This paper is based on the 2016 Neil Smith Lecture presented at St Andrews University. It honours the work of a geographer whose pioneering work on uneven development and the complex relations between capitalism and nature shaped late 20th century thinking inside and beyond the discipline of Geography. Today the collision of earth system dynamics with socio-economic dynamics is shaking apart Enlightenment knowledge systems, forcing questions of what it means to be a responsible inhabitant on planet earth and how, indeed, to go onwards “in a different mode of humanity”, to quote eco-feminist philosopher Val Plumwood (2007; Australian Humanities Review 42:1). “The Great Acceleration” since the 1950s of trends in key aspects of earth system health and socio-economic change highlights powerful dynamics that have shaped a new geological epoch, contentiously named the Anthropocene—or more perhaps to Neil’s liking, the Capitalocene. In this paper I ask how might we do geographic research in these times? I reflect on this question by drawing on the feminist anti-essentialist thinking strategy of reading for difference developed by J.K. Gibson-Graham. I attempt to open up new ways of working with uncertain possibilities. I do so with reference to field research into place-based knowledges of resilience in Monsoon Asia—a region that is experiencing increasingly uncertain and extreme “natural” events that signal Anthropogenic climate change. I return to “area studies” scholarship of Monsoon Asia conducted in the 1950s when the engines of economic change were starting to rev, fuelled by dire predictions of population explosion and the fear of communism. Like Neil, I am interested in the genealogy of geographical scholarship and the institutional contexts in which it developed and was influential. I look back to see how local knowledge was described and appreciated by two of our geographic forefathers and I consider how reading against the grain of capitalocentrism might play a role in making other worlds possible.  相似文献   

14.
In this ‘postcolonial’ era, peoples and places around the globe continue to face ongoing colonisation. Indigenous peoples in particular experience colonisation in numerous forms. Despite recent attempts to ‘decolonise’ indigenous spaces, hegemonic systems of production, governance and thinking often perpetuate colonial structures and relationships, resulting in further entrenched colonisation or ‘deep colonising’ (Rose, 1999). The interface between indigenous communities and the mining industry provides fertile ground for the tensions emerging between decolonising and deep colonising. Gold mining operations at Placer Dome's Granny Smith mine in the Eastern Goldfields of Western Australia present a valuable case study for examining this tension. Changes taking place at the mine site are decolonising in intent, though outcomes may be deep colonising in effect. Recent discussions among cultural geographers over meanings of place, Ollman's (1993) notion of vantage point and a broadly postcolonial literature inform consideration of this tension. Acknowledgment and incorporation of multiple vantage points into new resource management systems allows current hegemonic approaches to be rethought, and provides insights for the shift towards genuinely decolonising processes.  相似文献   

15.
Few places worldwide experienced Late Glacial ecological shifts as drastic as those seen in the areas covered by, or adjacent to, the massive ice sheets that blanketed much of the northern hemisphere. Among the most heavily glaciated regions, northern Europe underwent substantial ecological shifts during and after the Last Glacial Maximum. The climatically unstable Pleistocene–Holocene transition repeatedly transformed far-northern Europe, placing it among the last regions to be colonized by Paleolithic societies. As such, it shares paleoenvironmental and archaeological analogues with other once glaciated areas where human populations, entrenched in periglacial environments prior to glacier retreat, spread into newly deglaciated territories. Perhaps most significant for northern Europeans were post-glacial effects of the Younger Dryas and Preboreal periods, as shifts in climate, plant, and animal communities elicited several adaptive responses including innovation, exploration, and the eventual settlement of once glaciated landscapes. This paper is a detailed review of existing archaeological and paleoecological evidence pertaining to the Late Upper Paleolithic of northern Europe, and offers theoretical observations on human colonization models and ecological responses to large-scale stadial and interstadial events.  相似文献   

16.
美国绿色空间理论、实践及启示   总被引:2,自引:0,他引:2  
本文介绍了绿色开敞空间概念,研究了美国城市公园系统、区域整体、绿道、自然风景、景观生态规划、大地景观、纽约城乡规划设想等重要理论,概述了其绿色空间发展历程,分析了美国自然风景园、公园运动、国家公园、开放空间规划、绿道等实践。最后,从自然风景名胜区体系、绿色空间区域生态化、绿色空间自然化、绿道网络化、园林创新、绿色开放系统等方面探讨了美国绿色空间理论与实践对我国的重要借鉴和启示。  相似文献   

17.
Magical. A common adjective used to describe places. But does the magic of place spring from genius loci? Or could it be that we are the magicians, casting spells to transform places into what we desire (or what we fear)? Our sense of place is not a mirror on reality. We come to know places by inscribing our fantasies atop them, by writing onto the landscape our own imagined geographies. C.S. Lewis provides an intriguing glimpse into sense of place through the Pevensie children and their experience in The Lion, the Witch, and the Wardrobe: a mere wardrobe becomes a complex fantasy world in which the children play and interact. As adults, and as societies, we take real geographies and treat them as Lewis's wardrobe, creating Narnias in the depths of our most mundane landscapes. In this paper I explore the magic of place through an autobiographical photo essay set in a nature preserve in eastern Kansas. The stories I tell highlight in a literary and artistic way the phenomenological aspects of sense of place and the potential political import of the geographical imagination.  相似文献   

18.
Studies of human influences on the environment may treat human agency as an imposed, exogenous source of change or disturbance, or as an intrinsic part of earth surface systems. Consideration of human influences as exogenous or endogenous to earth surface systems can affect, or even predetermine, the outcome of analyses. This is demonstrated via qualitative stability analyses of generalized mass-and-energy-flux systems. When human impacts are considered as external disturbances such systems are stable, and will regain equilibrium after changes or perturbations. Conversely, when human impacts are included as a system component, with goals of either maximizing or minimizing throughput of mass and energy, the system is inherently unstable.  相似文献   

19.
Over and under: children navigating terrain in the East Anglian fenlands   总被引:1,自引:0,他引:1  
ABSTRACT

Drawing on fieldwork in three primary schools in East Cambridgeshire, UK, this paper explores children’s relationships with the places where they live, and the ways in which those relationships are mediated by play, exploration, and narrative imagination. Challenging assumptions of a ‘bubble-wrap generation’ which seem to discount the possibility that children today are able to experience the outdoor environment as a safe space with which they can build a living connection, we explored spaces which children deem particularly important in their lives. Through walks along routes planned by children, we look at how movement over the fens offered them an opportunity to express how and why particular places matter, what they see happening there, and what they expect to happen in the future. We reflect on the mutually constitutive relationship between kinship and experience of place, and argue that children’s sense of the stable and bounded landscape limits their sense of environmental variation in the fens. Yet, this exploration leads to the question: what lies under the surface of the land we move across? We therefore consider the relationship between presentism in children’s lives and the imagination of what lies underfoot.  相似文献   

20.
This article frames the practice of urban exploration and its interest towards abandoned places from a heritage perspective. It is argued that most urban explorers prioritise the excitement of trespassing and the creation of their own narratives over the historic importance of the sites they explore. These ‘performative’ explorers avoid deliberate attention that may lead to vandalism or touristification – an alternative way of ‘preserving by not preserving’ that celebrates decay and assumes the sites’ progressive loss. To achieve this, they prefer not to disclose exact locations, creating a divergence towards a minority of practitioners who prefer to collect data on history and current state of conservation to make it public. Attention is paid to these ‘communicative’ explorers, whose documentation renders abandoned places visible, opening further debates about a more inclusive preservation and memorialisation. By distinguishing both heritage views, the objective of this article is to contribute to the enlargement of Heritage Studies by incorporating urban exploration as a space for reflection between loss and bottom-up preservation and interpretation.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号