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51.
In this paper, I advance debates that argue that we need to reconceptualise global work from a mobilities perspective by looking how the representation of movement connects with the experience of movement. By looking at the imaginative geographies of Singapore for the British corporate expatriate, I explore how the qualitative representation of place is changing within managerial discourses from a hardship to an opportunity. In doing so, the paper argues that we need to combine understandings of the global economic flows that move some transnational migrants with their everyday lived experiences in order to explore what qualitatively makes work global. This allows us to highlight the multiplicity of ways in which transnational migrants can be understood rather than trying to impose singularity.  相似文献   
52.
The everyday politics of rural young people who live in post-war settings in the Global South is poorly explored. In the aftermath of a recent civil war in Nepal (1996–2006), villages have been operating without elected bodies, and poorly functioning local governance has been concentrated around party patronage networks and community development. In the lives of many young people, the aspirations and practices of educational and labour mobility have been dominant. Based on fieldwork carried out in the Panchthar District, this article discusses how ordinary young people nevertheless engage in different political dimensions. Guiding the analysis through the narratives of four young men and women, I have accentuated how the tension between socio-political situatedness and young people’s life strategies shapes the versatility of their political engagement. How do those who did not become political activists balance their daily lives, mobility and household obligations with involvement in party and local development politics? By exploring their motivations and engagement, I come to two conclusions. Firstly, young men navigate party politics by juggling the legacy of patronage and rejecting parties, as well as by involving themselves in disruptive events and seeking personal benefit from them. Secondly, young men and women negotiate their political motivations in community development politics primarily through household dynamics adjusted to their mobile lifestyle.  相似文献   
53.
Context is generally overlooked when selecting measures to define geographical mobility in mobility and migration research. This paper contributes to a discussion on the importance of context when defining geographical mobility and draws on examples from higher education in Sweden. Using binary logistic regression, statistical outcomes are compared when different measures of mobility to and mobility from higher education are employed. The measures produce different statistical outcomes, and these differences are illuminated when comparing results of common measures of mobility (e.g. crossing administrative boundaries or moving a certain distance) against two measures constructed specifically for Swedish higher education-related mobility. The results indicate that using municipality boundaries for measuring mobility in the Swedish higher education context is particularly inappropriate because the measure does not differentiate commuters from movers. This challenge surfaces because mobility must be determined in relation to the locations of students’ higher education institutions since administratively registered moves are unreliable in the educational context. These findings emphasize the importance of considering the geographical locations and characteristics of higher education institutions in addition to feasible commuting possibilities in research on higher education-related mobility. The two measures developed for the Swedish higher education context are identified as most appropriate because they center on the geographical distribution of higher education, and this distribution is perceived as having an important role in influencing mobility in this context. Consequently, this study accentuates the need for considering the geographical arrangement of resources (e.g. schools, hospitals) relevant to the context under investigation when determining measures to define mobility.  相似文献   
54.
There is long-standing scientific interest in understanding purposeful movement by animals and humans. Traditionally, collecting data on individual moving entities was difficult and time-consuming, limiting scientific progress. The growth of location-aware and other geospatial technologies for capturing, managing and analyzing moving objects data are shattering these limitations, leading to revolutions in animal movement ecology and human mobility science. Despite parallel transitions towards massive individual-level data collected automatically via sensors, there is little scientific cross-fertilization across the animal and human divide. There are potential synergies from converging these separate domains towards an integrated science of movement. This paper discusses the data-driven revolutions in the animal movement ecology and human mobility science, their contrasting worldviews and, as examples of complementarity, transdisciplinary questions that span both fields. We also identify research challenges that should be met to develop an integrated science of movement trajectories.  相似文献   
55.
At the beginning of August 1997, 72 samples of flood sediments were taken along the Upper and Middle Odra river and its tributaries. The concentrations of Zn, Pb, Cu, Cd, Co, Ni, Cr, Mn, and Fe in the bulk samples and in the <20 μm fraction were determined by AAS method. The contents of metals vary in wide ranges and are significantly higher in the <20 μm fraction of sediments. The range concentrations vary as following: Zn 274...3 656 mg/kg, Pb 79...1 773 mg/kg, Cd 1.7...11.8 mg/kg, Cu 38...2 244 mg/kg, Cr 14...384 mg/kg, Co 4...73 mg/kg, Hg 0.2...3.9 mg/kg, Mn 214...6 972 mg/kg, and Fe 1.5...16.3 %. The highest amount of the metals was found in the Wrocław and Głogów regions. The mobile (exchangeable and carbonatic fractions) portions of metals reached up to 50 % of Zn, 40 % of Pb and Cu and 60 % of Mn.  相似文献   
56.
57.
Citizenship has been associated with members of a community that engage in paid work (Painter and Philo, 1995; Desforges et al., 2005). This idea constructs remunerated work as a key determinant of citizenship (Brown and Patrick, 2012). The outcome in terms of mobility is the provision of infrastructure and technologies that potentially privilege the movement of those considered to be ‘productive bodies’ between their workplaces and homes at specific times, while disadvantaging disabled people and their everyday mobility practices (Imrie, 2000). This paper explores the ways in which the formation of citizenship and movement, as embodied and sensory practices, and wheelchair use may be constrained by infrastructures, means of transport and social practices that are often insensitive to the needs of disabled people. In particular, the paper contributes to fleshing out the notion of ‘embodied citizenship’ in relation to women wheelchair users and the role played by their devices and other mobility technologies in their citizenship struggles. The paper is divided into three sections. First, I set out a framework for exploring the relationships between citizenship, mobility and disability with a focus on wheelchair users. Second, drawing on original qualitative research data, the paper concentrates on the embodied mobility practices of women wheelchair users who live in Greater London and Leicestershire, United Kingdom. Here I highlight the prejudices, barriers, discrimination and exclusions that they face, which, potentially, impact on their claims to citizenship. Finally, the paper concludes that an approach based on the subjective experience of the wheelchair user in context is useful in revealing the complexities of citizenship.  相似文献   
58.
盐湖形成过程中银的迁移形式及富集条件   总被引:1,自引:1,他引:1  
郑大中 《盐湖研究》1994,2(2):28-35
本文研究了盐湖形成过程中银的迁移形式及富集条件.在热液中银主要以Ag(HS) ̄-_2·Ag(NH3)·AgCl络合物形式迁移;在表生条件下银主要以Ag(S2O3)络合物形式迁移.它们在盐湖中被演化为AgCl络合物,由于湖水大量蒸发、盐类大量结晶析出,导致盐湖卤水中银的富集.  相似文献   
59.
The intersections between technology, mobility and citizenship have been relatively neglected in current geographical enquiry. Through qualitative analysis of user, operator and media accounts of retro-fitted safety technology on HGVs (Heavy Goods Vehicles), this paper illustrates the ways in which citizenship as a moral accomplishment is dependent upon the socio-technical worlds into which individual actors are folded. In response to the growing incidence of cyclist fatalities under the wheels of HGVs, various safety technologies have been positioned as reliable ‘intermediaries’ by policymakers, manufacturers and operators seeking to mitigate the risks of the HGV. However, we demonstrate that these technologies are more accurately seen as ‘mediators’, because of the ways in which they distort and translate information, producing and reshaping new tasks and roles for HGV drivers. One of the consequences of this is a shift in responsibility towards the drivers, which increases the potential to construct them as negligent if accidents still occur. Accordingly, we indicate how technologies ‘push back’ on mobile subjects, shaping not only their ability for moral conduct, but broader social identities as citizens.  相似文献   
60.
Mobility is a key livelihood and risk management strategy, including in the context of climate change. The COVID-19 pandemic has reinforced long standing concerns that migrant populations remain largely overlooked in economic development, adaptation to climate change, and spatial planning. We synthesize evidence across multiple studies that confirms the overwhelming preponderance of in-country and short distance rather than international migration in climate change hotspots in Asia and Africa. The emerging findings highlight the critical importance of addressing immobility and the intersecting social determinants that influence who can move and who cannot in development policy. This evidence suggests a more focused climate mobilities research agenda that includes understanding multiple drivers of mobility and multi-directional movement; intersecting social factors that determine mobility for some and immobility for others; and the implications for mobility and immobility under climate change and the COVID-19 recovery.  相似文献   
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