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71.
    
Drawing on previous studies related to the evolutionary aspects of regional innovation systems (RIS), this paper examines how an exogenous shock reduced organizational thinness, fragmentation and lock-in and thereby facilitated path creation and RIS emergence in a peripheral region. A longitudinal case study approach, based on primary data from 39 interviews conducted between 2008 and 2012, is used to investigate how a region was affected by the sudden entry and subsequent activity of a multinational oil company. A multi-level analysis illustrates how this exogenous shock facilitated change at the firm, public authority and macro (regional) levels and thus provides a holistic understanding of the complex mechanisms that underlie regional transformation. The analysis illustrates how the entry of the oil company reduced organizational thinness by stimulating the establishment of external firms. The existing regional actors then managed to reduce their organizational lock-in by adapting their skills and resource bases to new knowledge provided through interfirm relationships (reduced fragmentation), and this reduced organizational lock-in and fragmentation ultimately strengthened the industrial structure and further contributed to regional path creation. A number of innovations were observed, and in combination with the “thickened” institutional structure, this represented the means for an emerging RIS.  相似文献   
72.
    
RODERICK STACKELBERG. Idealism Debased: From Völkisch Ideology to National Socialism. Kent, Ohio: The Kent State University Press, 1981. Pp. XIII, 202, 3 plates. $18 (US). Reviewed by Lawrence D. Stokes

JEROME CH'EN. China and the West: Society and Culture 1815–1937. Bloomington and London: Indiana University Press. Pp. 488. $25.90 (Can.) Reviewed by David P. Barrett

FREDERICK W. MARKS ill. Velvet on Iron: The Diplomacy of Theodore Roosevelt. Lincoln and London: University of Nebraska Press, 1979. Pp. xiv, 247. $15.00 (US). Reviewed by Raymond A. Esthus

CRAIG L. SYMONDS. Navalists and Antinavalists: The Naval Policy Debate in the United States, 1785–1827. Newark: University of Delaware Press, 1980. Pp. 252. $17.50 (US). Reviewed by Reginald C. Stuart

BERNARD RANSOM, Connolly's Marxism, London: Pluto, 1980. Pp. 126. Reviewed by Desmond Bowen

THOMAS A. BAILEY and PAUL B. RYAN, Hitler vs. Roosevelt: The Undeclared War. London: Collier Macmillan, 1979. Pp. 302. £7.45. Reviewed by Ronald W. Pruessen

M.A. HICKS, False, Fleeting, Perjur'd Clarence; George, Duke of Clarence, 1449–1478. Gloucester: Alan Sutton, and Atlantic Highlands, NJ. Humanities Press, 1980. Pp. 270. $22.00 (US). Reviewed by Robert Tittler

MURIEL ATKIN, Russia and Iran, 1780–1828. Minneapolis: University of Minnesota Press, 1980. Pp. xii, 216. $20 (US). Reviewed by M.E. Yapp

J.K. FEDOROWICZ. England's Baltic Trade in the Early Seventeenth Century: A Study in Anglo-Polish Commerical Diplomacy. Cambridge: Cambridge University Press, 1980. Pp. XIII, 334. $35 (US). Reviewed by David S. Macmillan

MICHAEL CROWDER. Colonial West Africa: Collected Essays. London: Frank Cass, 1978. Pp. 341. $28.50 (US). Reviewed by John Flint

PETER GRAF KIELMANSEGG. Deutschland und der erste Weltkrieg. 2. Auflage. Stuttgart: Klett-Cotta, 1980. Pp. XI, 755. Reviewed by Henry Cord Meyer

PIOTR S. WANDYCZ. The United States and Poland. Cambridge, MA: Harvard University Press. Pp. XVI, 465. $28.50 (US). Reviewed by Stanislaw Bobr-Tylingo

FREDERICK COOPER. From Slaves to Squatters: Plantation Labor and Agriculture in Zanzibar and Colonial Kenya, 1890–7925. New Haven: Yale University Press, 1980. Pp. xi, 328. $25 (US). Reviewed by Mike Mason

DONALD E. QUELLER. Medieval Diplomacy and the Fourth Crusade. London: Variorum Reprints, 1980. Pp. 322. £22. Reviewed by Bernice M. Kacznski

CHRISTINE MOSS HELMS. The Cohesion of Saudi Arabia: Evolution of Political Identity. London: Croom Helm, &; Baltimore: The Johns Hopkins University Press, 1981. Pp. 313. $25.00 (US). Reviewed by Ray L. Cleveland

CHRISTOPHER H.D. HOWARD, editor. The Diary of Edward Goschen, 1900–1914. London: Royal Historical Society (Camden Fourth Series, Vol. 25), 1980. Pp. xn, 315. £10. Reviewed by Briton C. Busch  相似文献   
73.
    
Neochonetes sp. (Brachiopoda, Chonetoidea) is recorded from the middle to upper part of the early Permian Río del Peñón Formation, Río Blanco Basin, La Rioja, Argentina. It can be recognised as an r-strategist based on distribution, facies, morphological and ontogenic data which agree with the criteria proposed by Levinton and Alexander for recognising palaeo-opportunistic brachiopods. The new record of an opportunistic chonetid suggests that the group may have evolved this adaptative strategy during the late Palaeozoic.  相似文献   
74.
    
John Morrissey 《对极》2011,43(2):435-470
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75.
    
Pure precast beam-column systems incorporate unbonded reinforced at the critical sections, causing strain incompatibility between steel and concrete. As a result, classical section analysis method, well know for characterising monolithic concrete members, cannot be directly applicable to these systems. This paper provides a section analysis method suitable for precast members, incorporating, through an analogy with equivalent cast-in-place solution named “monolithic beam analogy”, an additional condition on the member global displacement. The proposed method was first validated with the experimental data from tests on beam-column Hybrid subassemblages. Using appropriate hysteresis rules and the response envelopes defined by the section analysis method, a prediction of the behaviour of the PRESSS test building was carried out. Satisfactory agreements obtained between the analytical and experimental results confirm the validity of the suggested methodology. Derivation of the method and experimental validation are herein presented.  相似文献   
76.
    
There is significant confluence in the literature that leads one to expect groups of haves and groups of have nots in socio‐economic systems within common spatial contexts. Several economic theories suggest economic activity to be concentrated in a few core areas with geographically large ‘peripheries’ relying on one or two industries for employment and income. In the context of the north of Australia, issues of disparities in socio‐economic status between the region and elsewhere in Australia, and also within the region have been highlighted in the literature for some time. This paper discusses the contemporary situation using customised data collected and analysed for 55 river‐basin catchments in the Tropical Rivers region of northern Australia to highlight the extent of the haves and have nots problem. A range of spatial economic theories are discussed as theoretical bases for the present day situation and as pointers to revisionist approaches which may address it. Transforming the have nots to improved states of well‐being will be a costly and difficult process. Consequently, we argue that factors other than raw incomes and economic production should be reconsidered and re‐prioritised by governments as redress to the ongoing ‘problem’ of the North.  相似文献   
77.
    
The literature on regional innovation systems has considerably enhanced our understanding of the critical role played by geographical proximity and local institutional conditions for the production of new knowledge and its economic exploitation. In most cases, however, both theoretical and empirical work has focused on regional innovation systems situated within a national context. Little research has been done so far on cross‐border regional innovation systems. The aim of this paper is to explore conceptually whether the theoretical approach of regional innovation systems can be applied to cross‐border settings. It investigates some critical conditions for the emergence of transfrontier innovation systems and concludes that cross‐border areas differ enormously regarding their capacity to develop an integrated innovation space.  相似文献   
78.
    
Thermohaline convection of subsurface fluids strongly influences heat and mass fluxes within the Earth's crust. The most effective hydrothermal systems develop in the vicinity of magmatic activity and can be important for geothermal energy production and ore formation. As most parts of these systems are inaccessible to direct observations, numerical simulations are necessary to understand and characterize fluid flow. Here, we present a new numerical scheme for thermohaline convection based on the control volume finite element method (CVFEM), allowing for unstructured meshes, the representation of sharp thermal and solute fronts in advection‐dominated systems and phase separation of variably miscible, compressible fluids. The model is an implementation of the Complex Systems Modelling Platform CSMP++ and includes an accurate thermodynamic representation of strongly nonlinear fluid properties of salt water for magmatic‐hydrothermal conditions (up to 1000°C, 500 MPa and 100 wt% NaCl). The method ensures that all fluid properties are taken as calculated on the respective node using a fully upstream‐weighted approach, which greatly increases the stability of the numerical scheme. We compare results from our model with two well‐established codes, HYDROTHERM and TOUGH2, by conducting benchmarks of different complexity and find good to excellent agreement in the temporal and spatial evolution of the hydrothermal systems. In a simulation with high‐temperature, high‐salinity conditions currently outside of the range of both HYDROTHERM and TOUGH2, we show the significance of the formation of a solid halite phase, which introduces heterogeneity. Results suggest that salt added by magmatic degassing is not easily vented or accommodated within the crust and can result in dynamic, complex hydrologies.  相似文献   
79.
Abstract

Surpassing the national perspective usually adopted, the authors confirmed the existence of a pattern of population distribution common to the whole Iberian Peninsula in the long run. This pattern is clearly associated with geographical factors. These variables seem to have more weight in explaining changes between 1877/78 and 1940 than in the period from 1940 to 2001. The observation of the cross-border region has shown that proximity to the frontier has not generated any distinct pattern of population density on either side of the boundary line. The spatial coherence of the observed phenomena throughout the Peninsula and of its evolution, independent of the border between states, reinforces the importance of geographic factors in their explanation. At the same time, this verification opens up new issues related to the effect of national political and economic policies.  相似文献   
80.
    
Pathological changes of the lector priest Iufaa are compared with those revealed on the skeletons of his two relatives Imakhetkherresnet and Nekawer, and of an unrelated male Padihor. They were discovered in 2001 in the vicinity of Iufaa's monumental shaft tomb, dating from late 26th dynasty (before 525 BC). The complex was found unmolested by robbers. Congenital anomalies, osteoporosis, degenerative joint changes, post‐traumatic changes and maybe the first palaeopathological evidence of a rare benign neoplasm (neurilemmoma) were recorded. The findings add interesting new facts to the lives of these historical persons. Copyright © 2003 John Wiley & Sons, Ltd.  相似文献   
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