943 resultados para Southeast Nigeria
Resumo:
The United States has exerted a major influence on Southeast Asia, especially since World War II. As both a promoter of neoliberal reform and as the key strategic actor in the wider East Asian region, the impact of U.S. power has been immense. But both the Asian economic crisis and its aftermath, and the more recent war on terror, have highlighted the contradictory impact of evolving U.S. foreign policy and intervention in the region. At both an elite and a mass level there is evidence of resentment about, and hostility toward, U.S. policy and its perceived negative effects. This article outlines how U.S. foreign policy has impacted the region in the economic, political, and security spheres, and argues that not only has it frequently not achieved its goals, but it may in fact be undermining both America's long-term hegemonic position in the region and any prospects for political liberalization.
Resumo:
Verrallina funerea (Theobald) is a brackish water mosquito that is recognised as an important pest and vector in southeast Queensland, Australia. Immature development time and survival of Ve. funerea was defined in the laboratory in response to a range of temperatures (17-34 degrees C) and salinities (0-35 parts per thousand (p.p.t)). The expression of autogeny in this species was also assessed. Salinity only had a slight effect on mean development time from hatching to adult emergence (7.0-7.4 d at salinities of 0, 17.5 and 31.5 p.p.t) and survival was uniformly high (97.5-99.0%). Mean development times were shorter at 26, 29 and 32 degrees C (7.0, 6.8 and 6.8 d, respectively) and longest at 17 degrees C (12.2 d). The threshold temperature (t) was 5.8 degrees C and the thermal constant (K) was 142.9 degree-days above t. Survival to adulthood decreased from > 95% (at 17-29 degrees C) to 78% (at 32 degrees C) and 0% (at 34 degrees C). No expression of autogeny was observed. Immature development times of Ve. funerea, Ochlerotatus vigilax (Skuse) and Oc. procax (Skuse) were then determined under field conditions at Maroochy Shire. Following tide and rain inundation, cohorts of newly hatched larvae were monitored daily by dipping, and time until pupation was noted. Tidal inundation triggered hatching of Ve. funerea and Oc. vigilax larvae whereas Oc. procax larvae were found only after rain inundation. Estimates of Ve. funerea and Oc. vigilax field development times were similar (8-9 d) while Oc. procax development time was slightly longer (9-10 d). Based on these survey results, control activities targeting Ve. funerea must be initiated 4 d (if using Bacillus thuringiensis var. israelensis de Barjac) or 5 d (if using s-methoprene) after inundation. However, Casuarina glauca Sieber canopy and branchlets covering breeding habitats may present a problem for the penetration of such treatments.
Resumo:
The acid soils of the uplands of Southeast Asia have resisted intensive agricultural use for centuries. In recent decades, however, due to rapid population growth, escalating market demand for agricultural produce, and govemment policies for land development and settlement, the acid uplands have become the focus of more intensive land-use systems, placing greater demands on farmers and requiring the development and dissemination of improved practices for soil management. In order to develop appropriate soil management technologies and plan effective interventions to facilitate their adoption, it is important to understand the goals and circumstances of farmers in the acid uplands, the range of farming systems they have developed, and the variety of socio-economic factors and trends influencing the evolution of these farming systems. Building on Boserup's model of agrarian change, an evolutionary framework is developed and applied to five case studies: a long-fallow (shifting) cultivation system in Sarawak, Malaysia; a short-fallow system in South Kalimantan, Indonesia; a continuous cropping system in Bukidnon, Philippines; a tree crop (with intercropping) system in Southern Thailand; a livestock grazing system in Daclac, Vietnam. The framework provides a useful tool to interpret and categorise farmers' evolving soil management strategies and to plan more effective soil management research and interventions. (c) 2004 Elsevier B.V. All rights reserved.
Resumo:
Exorts processing zones (EPZs) and growth triangles have been two common Asian initiatives to increase wealth and regional competitiveness in the world economy. Since they are seldom analysed jointly, this paper investigates their mutuality in the development process. Taking the problematic case of the Brunei-Indonesia-Malaysia-Philippines East ASEAN Growth Area (BIMP-EAGA) triangle, we explore the role of EPZs in enhancing regional collaboration, competitiveness, and domestic linkages. Despite the triangle's weak economic complementarities, its processing zones are found capable of advancing development by furthering opportunities in regionalisation/localisation of production. Latterly, trade and investment liberalisation within ASEAN raises broad questions about the rationale of EPZs and growth triangles. Zone-triangle nexuses will require rethinking as, under different regulatory conditions, the zones compete more directly across ASEAN and also with global rivals. Copyright © 2005 John Wiley & Sons, Ltd.
Resumo:
We present results of starch analysis of archaeological deposits from Pitcairn Island. High concentrations of starch grains preserved in cell membranes, and xylem tracheary elements, consistent with introduced Colocasia esculenta (taro) were found. Because of limited age control, we are uncertain if the microfossils are prehistoric. Problems associated with identifying taxa with small starch grains in extractions from weathered deposits are highlighted. (c) 2006 Elsevier Ltd. All rights reserved.