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21.
Jamaica sloops were vernacular watercraft designed, built, and utilized by Caribbean colonists beginning in the late-17th century. Despite their popularity, no design or construction records or even a specific definition of their form survive, and many sources simply describe them as an early version of the Bermuda sloop. Vernacular Jamaica sloops were a unique adaptation by English colonists to combat the effects of piracy, and their design was specific to the economic, geographic, and political circumstances of colonial Jamaica. This article proposes a set of characteristics that can be used to define vernacular Jamaica sloops, firstly to distinguish them from the eighteenth-century naval Jamaica-class sloops but also to better understand them as a social response to external stimuli within the complex relationship between maritime economy, piracy and colonial control executed through the navy.  相似文献   
22.
A Constructivist Approach to Climate Change Teaching and Learning   总被引:1,自引:0,他引:1  
It is now broadly acknowledged that climate change due to an enhanced Greenhouse Effect is underway and such change will have major implications for our societies and environments. This paper outlines a pedagogical approach devised to encourage learning and critical thinking about climate change. A constructivist approach to teaching and learning is applied to stimulate analysis of potential impacts of climate change on systems familiar to secondary school students in South Australia. The problem‐based method guides students through a conceptualisation of the implications of environmental change. Students at Woodcroft College, when given the opportunity to examine the potential climate change impacts on a local coastal ecosystem, found the method to be both challenging and engaging. The exercise concluded with students discussing possible personal behavioural and broader societal responses to reduce the impacts of future climate change. The paper contends that such teaching to support students to become resilient young adults will be vital in a future world of environmental risk.  相似文献   
23.
Human-induced changes to global climate have become increasingly difficult to ignore in recent years. As the frequency and severity of extreme weather events increases, the impacts on both natural and human systems are becoming difficult to manage with the current policies. In Canada, one of the most vulnerable regions to climate change is the Arctic, where temperatures are rising at a rate two to three times that of the global average. Warmer seasonal temperatures have led to melting permafrost and increased variability in sea ice conditions, which has contributed to a rise in coastal erosion. The ongoing resilience of Arctic communities will depend heavily on their ability to implement successful long-term adaptation policies. The development and implementation of any action on climate change adaptation should involve collaboration with local stakeholders in order to reflect the views and experience of those living in the Arctic.  相似文献   
24.
This essay considers the mid-twentieth century adoption of genetic explanations for three biological phenomena: nutritional adaptation, antibiotic resistance, and antibody production. This occurred at the same time as the hardening of the neo-Darwinian Synthesis in evolutionary theory. I argue that these concurrent changes reflect an ascendant narrative of genetic selfhood, which prioritized random hereditary variation and selection through competition, and marginalized physiological or environmental adaptation. This narrative was further reinforced by the Central Dogma of molecular biology and fit well with liberal political thought, with its focus on the autonomous individual. However, bringing biological findings into line with this narrative required modifying the notion of the gene to account for various kinds of non-Mendelian inheritance. Hans-Jörg Rheinberger's reflections on narrative and experiment are valuable in thinking about the friction between the postwar ideal of genetic selfhood and actual observations of how organisms adapt in response to the environment.  相似文献   
25.
ABSTRACT

This article is a historiographical exploration of the special forms of knowledge generation and knowledge transmission that occur along local cultural boundaries in the modern neurosciences. Following the inauguration of the so-called “Law on the Re-Establishment of a Professional Civil Service” in Nazi Germany on April 7, 1933, hundreds of Jewish and oppositional neurologists, neuropathologists, and psychiatrists were forced out of their academic positions, having to leave their home countries and local knowledge economies and traditions for Canada and the United States. A closer analysis of their living and working conditions will create an understanding of some of the elements and factors that determined the international forced migration waves of physicians and clinical neuroscientists in the twentieth century from a historiographical perspective. While I am particularly looking here at new case examples regarding the forced migration during the National Socialist period in Germany, the analysis follows German-speaking émigré neurologists and psychiatrists who found refuge and settled in Canada. These individuals form an understudied group of refugee medical professionals, despite the fact that the subsegments of refugee neurologists and clinical psychoanalysts in the United States, for example, have been a fairly well-investigated population, as the works of Grob (1983), Lunbeck (1995), or Ash and Soellner (1996) have shown. This article is primarily an exploration of the adjustment and acculturation processes of several highly versatile and well-rounded German-speaking physicians, who had received their prior education in neurology, psychiatry, and basic brain research. They were forced out of their academic home institutions and had to leave their clinical research fields as well as their disciplinary self-understanding behind on the other side of the Atlantic.  相似文献   
26.
Food security remains a critical global issue, made more difficult because of the rising world population, climate challenges affecting food production and a focus on market-based solutions that undermine subsistence production in vulnerable rural areas. Particularly affected are countries across Asia where poverty, hunger and malnourishment affect a significant proportion of the population. Drawing on Sen’s entitlement theory, we argue that a shift in focus from national food production to intra-household food access enables a critical reflection on consumption smoothing strategies adopted at this level. In particular, we draw attention to the tendency for women and girls to eat less as an intra-household adaptation strategy. We present findings from our research in rural areas of Bangladesh and note that adaptation strategies adopted by households in response to food insecurity. We note that strategies designed to address food insecurity must include gender mainstreaming to ensure that women and girls are not taking a disproportionate responsibility for intra-household food security.  相似文献   
27.
Combining psychological and anthropological work indicates that sleep, dreaming, and the imagination are involved in regulating mood and updating individual and collective knowledge. Psychologists often implicitly assume that all dreamers share their naturalistic model of dreaming while ethnographers often emphasize the spiritual explanations of dreaming inherent in the worldviews of their hosts. Applying cognitive and evolutionary theories of religion to the ethnography of dreaming and the imagination suggests that these capacities have adaptive value for learning, emotional adjustment, and the flow, revivification, and recalibration of knowledge traditions. A general anthropological approach to sleep, dreaming, and the imagination can surmount oversights that result from disciplinary and subfield foci and emphases.  相似文献   
28.
The evolution of littoral palaeoenvironments in the southern Pampas region of Argentina towards the end of the early Holocene and the beginning of the mid Holocene is discussed, and the formation processes of the archaeological site of La Olla are analysed. This site is located in the intertidal zone of the present beach and is remarkably well-preserved. The human occupation at the site has been dated at between 7400 and 6480 yrs BP, and is interpreted as a place for the processing and consumption of the southern fur seal (Arctocephalus australis) and southern sea-lion (Otaria flavescens). It is concluded that biostabilization by microbial mats of the sedimentary structures and archaeological remains that developed and are present on the tidal flat prevented their erosion by wind, turbulence currents and waves. This is what has permitted the exceptional preservation of the site. On the basis of the analyses of one of the sectors of the site it can be concluded that the sedimentary succession of the La Olla site is the result of the coastal environmental changes during the early–mid Holocene in the pre-maximum transgressive episode. During this interval a tidal flat developed on the Pleistocene abrasion platform. Human occupation occurred during the formation of mixohaline marsh, an upper intertidal–lower supratidal zone ecosystem.  相似文献   
29.
A functional-adaptive study of the postcranium of two late Miocene sabretooth borhyaenoid specimens (Mammalia, Metatheria) is presented. Thylacosmilus atrox developed a longer neck than in non-sabretooth borhyaenoids and was capable of strong flexion of the head. The lower back is well-stabilized and more rigid than in the other borhyaenoids. The forelimb appears well-suited for manipulating and capturing prey, with a probably well-developed deltoid and pectoral musculature. Compared with other Miocene borhyaenoids, the hip joint of Thylacosmilus is modified to allow greater postural flexibility (e.g. possibility of erect stances). The low greater femoral trochanter, the short and sigmoid tibia, and the semiplantigrade hind foot of Thylacosmilus precluded fast running. Thylacosmilus killed by stabbing, a peculiar mechanism that evolved in parallel in many other sabretooth taxa. This technique has significant functional-adaptive consequences on the postcranial skeleton, superimposed on the generalized morphological pattern reflected in its non-sabertooth relatives. The superficial similarities observed between Thylacosmilus and Smilodon overshadow real differences (at the level of joint patterns and muscular groups involved in particular movements), a condition that suggests the development in the marsupial form of a morphological type unique to the thylacosmilid lineage within Borhyaenoidea.  相似文献   
30.
Business transactions’ value chains can constrain their capacity to maximize market value from limited resources. Seafood markets exhibit a strong demand for fresh, high‐quality seafood yet empirical studies show large variations in value chains’ adaptation and exploitation of market opportunities. This article presents a comprehensive model that identifies the main drivers and constraints in value chains for wild harvested seafood that generate differences in market adaptation. The model is built on theories of value chains, business conventions, competitive behaviour, governance conventions, legal regulation, and direct ecological and economic constraints. The model is applied in a comparative case analysis of market adaptation by value chains for North Atlantic cod products in Norway and Iceland, which explains why business conventions in Iceland are more consumer market adapted than those in Norway.  相似文献   
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