Spatial heterogeneity

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  • Foreword for Cary Conference X, “Ecosystem Function in Heterogeneous Landscapes.” Among the most difficult problems in the life sciences is the challenge to understand the details of how ecosystems/watersheds/landscapes function. Yet, the welfare of all life, not just the human species, depends upon the successful functioning of diverse and complicated ecosystems, each with various dimensions and compositions.

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Canopy structure and spatial heterogeneity of understory light in an abandoned Holm oak woodland...

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Genetic variation of Prunus avium in susceptibility to cherry leaf spot (Blumeriella jaapii) in spatially heterogeneous infected seed orchards...

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  • The initial survey showed a high level of spatial heterogeneity in the location of industries in Jepara. For subsequent sampling and more detailed analysis of a subset of these enterprises, the area was divided into squares, each of which would be independently surveyed. The theoretical optimal size of the squares was calculated using the standard interpolation method, with weighted distances. Details are given in Annex 1 and the resulting grid is illustrated in Figure 2. The spatial heterogeneity is so extreme that 80% of the workshops are located in only 17% of the squares.

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  • Oueslati and Bennacer Nanoscale Research Letters 2011, 6:222 http://www.nanoscalereslett.com/content/6/1/222 NANO EXPRESS Open Access Heterogeneous nanofluids: natural convection heat transfer enhancement Fakhreddine Segni Oueslati1, Rachid Bennacer2* Abstract Convective heat transfer using different nanofluid types is investigated. The domain is differentially heated and nanofluids are treated as heterogeneous mixtures with weak solutal diffusivity and possible Soret separation.

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  • At the Kabupaten level, the average relative cash flow per worker is 74 million Rp (with 95% confidence limits of 70 to 78 million Rp), but the dispersion is high and the spatial heterogeneity among villages is considerable (Figure 18). In some villages, the added value per worker is less than 1 million Rp/year, while others produce more than 600 million Rp/year/worker. There is no clear explanation for the differences, as they are not obviously linked to either the industrial or spatial concentrations.

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  • Alterations to fire regimes have resulted in many changes to the biological communities including changes in vegetation composition and structure and vegetation type conversions or ecosystem migrations. This text details many of these changes, explains how fire has changed as an ecosystem process, and provides insights for determining the direction that the changes might take in the future.

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  • Tuyển tập các báo cáo nghiên cứu khoa học ngành toán học được đăng trên tạp chí toán học quốc tế đề tài: Analysis and modeling of spatial characteristics in urban microscenario of heterogeneous network

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  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Analysis and modeling of spatial characteristics in urban microscenario of heterogeneous network

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Spatial and Temporal Fairness in Heterogeneous HSDPA-Enabled UMTS Networks

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  • The epidemiology of infectious diseases is one of the great triumphs of applied ecology. In particular, the public health importance of parasites has lead to a large literature, exploring their impact on the population dynamics, population genetics and evolutionary biology of human populations. An important milestone was the Dahlem Conference on population biology of infectious diseases, held in 1981. The resulting book (Anderson and May 1982) lucidly summarised the contemporary state of parasite ecology and epidemiology.

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  • A competitive partial-equilibrium spatial model with heterogeneous goods is constructed to evaluate effects of the removal of tariffs, tariff-rate quotas, and sanitary regulations on world poultry trade. The model distinguishes between ìhigh-valueî (mostly white meat) and ìlow-valueî (mostly dark meat) poultry products and simulates the trade flows between eight exporting and importing countries and regions. Removing all barriers simultaneously has larger impact on trade than only removing tariffs and tariff-rate quotas.

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  • To evaluate the policy effects on world poultry trade, a perfectly competitive, spatial partial-equilibrium model with heterogeneous goods is constructed to simulate the trade flows between six key non-composite exporting or importing regions (five countries and the European Union (EU)) and two rest-of-world region aggregates. The model incorporates several extensions of previous work. First, most previous analysis of the economic effects of technical barriers has examined bans on product shipments across a single border (Calvin and Krissoff; Paarlberg and Lee).

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  • A heterogeneous good, spatial partial-equilibrium model with perfect competition affected by non-technical and sanitary trade barriers is used to represent the global poultry sector. There are eight regions in the model: United States (US), Brazil, the EU, Japan, China, Russia, a rest-of-world poultry exporting region (ROWE), and a rest-of- world poultry importing region (ROWM).

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