Surrounding Space

The history of evolution is a history of development from less to more complex organisms. This growth in complexity of organisms goes hand in hand with a concurrent growth in complexity of environments and of organism-environment relations. It is a concern with this latter aspect of evolutionary development that motivates the present paper. We begin by outlining a theory of organism-environment relations. We then show that the theory can be applied to a range of different sorts of cases, both biological and non-biological, in which objects are lodged or housed within specific environments, or niches. Biological science is interested in types — for example in genotypes, phenotypes, and environment types — and in regularities that can serve as the basis for the formulation of laws or general principles. Types, however, can exist only through their corresponding tokens. Our theory of token environments is meant to plug this gap and to provide a first step towards a general theory of causally relevant spatial volumes

Action and Energy of the Gravitational Field

We present a detailed examination of the variational principle for metric general relativity as applied to a ``quasilocal'' spacetime region \M (that is, a region that is both spatially and temporally bounded). Our analysis relies on the Hamiltonian formulation of general relativity, and thereby assumes a foliation of \M into spacelike hypersurfaces $\Sigma$. We allow for near complete generality in the choice of foliation. Using a field--theoretic generalization of Hamilton--Jacobi theory, we define the quasilocal stress-energy-momentum of the gravitational field by varying the action with respect to the metric on the boundary \partial\M. The gravitational stress-energy-momentum is defined for a two--surface $B$ spanned by a spacelike hypersurface in spacetime. We examine the behavior of the gravitational stress-energy-momentum under boosts of the spanning hypersurface. The boost relations are derived from the geometrical and invariance properties of the gravitational action and Hamiltonian. Finally, we present several new examples of quasilocal energy--momentum, including a novel discussion of quasilocal energy--momentum in the large-sphere limit towards spatial infinity.Comment: To be published in Annals of Physics. This final version includes two new sections, one giving examples of quasilocal energy and the other containing a discussion of energy at spatial infinity. References have been added to papers by Bose and Dadhich, Anco and Tun

The Value of Space: Geopolitics, Geography and the American Search for International Theory in the 1950s

This article examines the Council on Foreign Relation engagement with geography and geopolitics. It focuses on the history of the 1953 study group on international theory, gathered under the Council's auspices. The group dedicated its attention to international theory and geopolitics, reflecting the prominence of spatial thinking in mid-century American politics. In the 1950s, American politicians and the general public alike started to pay a greater attention to the role of the physical geographical environment in shaping world affairs and foreign policy strategy. Nonetheless, the reception of geopolitics and geography at the study group was icy. Their wariness towards spatial thinking reflected a more general aversion to geographical modes of analysis among American scholars and practitioners of international affairs that continues today. I explore the study group's interpretation of spatial thinking and offer counter examples in the form of three American mid-century approaches to geopolitics. By mischaracterising the spatial thought available at the time, the study group missed a wide range of geopolitical ideas that could have contributed to the formation of a pluralistic and diverse theoretical foundation for the discipline of International Relations. Focusing on the work of Nicholas Spykman, Hans Weigert and Harold and Margaret Sprout, I argue that geopolitical scholarship in the United States at the time offered a richer variety of concepts that could still serve International Relations scholars today

Agglomeration economies and the location of new information and communication technology (ICT) firms in the Netherlands

In 2000, the world wide, rapid employment growth in the ICT-sector came to an end. Knowledge-intensive ICT-firms and -sectors in the Netherlands confirmed to this negative development trend as well. The life-cycle of the ICT-sector appears to reach a new phase of development, dominated by saturation of demand and enforced competition. This might affect the localised growth in the ICT-sector as well. According to evolutionary interpretations of agglomeration theory, one expects that new ICT firms start up in knowledge intensive, urban setting in order to gain from localised knowledge spillovers. The recent empirical literature is not unambiguous clear upon the role of intra- and intersectoral (specialisation or sectoral diversity based) agglomeration circumstances that determine firm formation, growth and survival patterns. In later stages of sectoral development, three kinds of spatial developments are expected from the geographical growth literature: (1) a cummulative causation based process of growth within the preliminary urban settings; (2) a dispersion process towards suburban and adjacent rural regions based on physical network and proximity conceptualisations, (3) spatial growth transmittance and firm dispersion based on functional network spatial relationships which are predominantly non-contiguous in character. For the latter category of spatial economic dynamics, the degree of urbanisation, accessibility, regional labour market- and national zoning spatial regimes are assumed to be leading spatial conceptualisations. A favourable macro-economic growth perspective, as present in the Netherlands during our research period, is assumed to speed up (and condition) spatial economic dispersal patterns. To test these spatial growth transmittance and firm dispersal hypotheses we analyse the components of growth (new firm formation, survival and growth in incumbent firms) of a large dataset of in total 36,000 ICT firms in the Netherlands for the period 1996-2000. The papers empirically distinguishes in-situ urban growth, contiguous relations in growth patterns (starting on an initially low, intra-urban spatial scale) and heterogeneous (non-contiguous) spatial research designs. Conclusions are drawn in relation to the recent agglomeration and economic growth literature.

Determinants of regional variations in the rate ofl profit. An empirical analysis for Austrian manufacturing 1972-1992

The rate of profit represents a central concept in economics and is commonly seen as one of the most accurate indicators for economic vitality of firms, industries, and regions. The level of profit rates is supposed to guide investment shifts between sectors and over space, the speed and direction of technological change, and the development of economic activity in the long run. Differentiales in regional profit rates may therefore be a major source for differences in regional economic development and regional competitiveness. While neoclassical regional economic theory postulates a tendency towards an equalisation in regional rates of profit, empirical studies show considerable and persistent regional differences in profitability. The aim of the paper is to analyse the pattern of profitability over time and space for Austrian manufacturing on a highly disaggregated regional level for the time period 1972-1992. An eclectic model is employed in order to analyse major sources for regional variations in profit rates. The model distinguishes four groups of determinants: production technology, capital-labour-relations, market competition, and spatial variables such as transport costs and agglomeration economies.

Catalogue of 12CO(J=1-0) and 13CO(J=1-0) Molecular Clouds in the Carina Flare Supershell

We present a catalogue of 12CO(J=1-0) and 13CO(J=1-0) molecular clouds in the spatio-velocity range of the Carina Flare supershell, GSH 287+04-17. The data cover a region of ~66 square degrees and were taken with the NANTEN 4m telescope, at spatial and velocity resolutions of 2.6' and 0.1 km/s. Decomposition of the emission results in the identification of 156 12CO clouds and 60 13CO clouds, for which we provide observational and physical parameters. Previous work suggests the majority of the detected mass forms part of a comoving molecular cloud complex that is physically associated with the expanding shell. The cloud internal velocity dispersions, degree of virialization and size-linewidth relations are found to be consistent with those of other Galactic samples. However, the vertical distribution is heavily skewed towards high-altitudes. The robust association of high-z molecular clouds with a known supershell provides some observational backing for the theory that expanding shells contribute to the support of a high-altitude molecular layer.Comment: To be published in PASJ Vol. 60, No. 6. (Issued on December 25th 2008). 35 pages (including 13 pages of tables), 7 figures. Please note that formatting problems with the journal macro result in loss of rightmost data columns in some long tables. These will be fixed in the final published issue. In the meantime, please contact the authors for missing dat

On Whether B-Theoretic Atheists Should Fear Death

In this paper I revisit a dispute between Mikel Burley and Robin Le Poidevin about whether or not the B-theory of time can give its adherents any reason to be less afraid of death. In ‘Should a B-theoretic atheist fear death?’, Burley argues that even on Le Poidevin’s understanding of the B-theory, atheists shouldn’t be comforted. His reason is that the prevalent B-theoretic account of our attitudes towards the past and future precludes treating our fear of death as unwarranted. I examine his argument and provide a tentative defense of Le Poidevin. I claim that while Burley rightly spots a tension with a non-revisionary approach to our ordinary emotional life, he doesn’t isolate the source of that tension. The real question is how to understand Le Poidevin’s idea that on the B-theory, we and our lives are ‘eternally real’. I then suggest that there is a view of time that does justice to Le Poidevin’s remarks, albeit a strange one. The view takes temporal relations to be quasi-spatial and temporal entities to exist in a totum simul.This is the author accepted manuscript. The final version is available from Springer via http://dx.doi.org/10.1007/s11406-015-9638-

Geostrategic Renewable Energy Transition in Turkey : Organizational Strategies Towards an Energy Autonomous Future

The geographical location of Turkey in the Asia Minor places the country in a delicate geostrategic position determined by its history, ideological structure, politics and energy economy. The Turkish government has defined its main energy strategies with the goal of reaching 30% renewables by 2023. Key strategies declared are the prioritization of energy supply security, the consideration of environmental concerns, and an increase in efficiency and productivity through the establishment of transparent and competitive market conditions through reform and liberalization. This article analyses the renewable energy (RE) transition of Turkey from a fully centralised energy management model towards a system of partially centralization through the unbundling of utility companies. Analysis will utilize Michael Mann’s theory on the four sources of social power as an alternative organizational means of social control and the interrelations of ideological, economic, political and military power. The recent history of Turkey’s RE transition and government plans for sector development will be investigated from a socio-spatial and organizational perspective. Furthermore, the way in which these socio-spatial relations have been shaping electricity market liberalization and the preparedness of the state to share its power with non-state actors is discussed. The potential of a centralised RE management model to inspire ‘decentralised’ RE management in other geographies is considered. In conclusion, key factors in the organisation of the (de)centralised electricity transitions are found to be dependent on history, geography, and overlapping relations of social power