نتایج جستجو برای: regional modeling

تعداد نتایج: 587367  

2018
Ahmed El-Gabbas Carsten F Dormann

Species distribution modeling (SDM) is an essential method in ecology and conservation. SDMs are often calibrated within one country's borders, typically along a limited environmental gradient with biased and incomplete data, making the quality of these models questionable. In this study, we evaluated how adequate are national presence-only data for calibrating regional SDMs. We trained SDMs fo...

2003
Yasuhide Okuyama

Significant progress has been made in recent years for modeling spatial economic impacts of disasters in a regional context (for example, Okuyama and Chang eds. Modeling the Spatial Economic Impacts of Disasters, forthcoming). While these advancements are more toward modeling strategies based on conventional frameworks, little has been dealt with the theory on economics of disasters, since the ...

Journal: :Regional Science Policy and Practice 2021

Knowledge and innovation have become a significant source of modern regional development. The paper aims to study the spatial association model innovation, besides critiquing policy, using knowledge production function approach. At level Egyptian governorates, number patent applications has been used as proxy for innovation. uses cross-sectional data patents in 2018 with lagged time variables i...

ژورنال: اقتصاد مالی 2018
بهروز هادی زنوز فیروز توفیق منیژه دشتبان کامبیز پیکار جو

تکنیک داده – ستانده از سالها قبل و به طور گسترده در برنامه‌ریزی‌های منطقه‌ای بکار رفته است، اما آنچه که کمتر به آن پرداخته شده است، مدل‌های چند منطقه‌ای و اثرات سریز و بازخورد بین مناطق است. با توجه به اینکه ساخت جداول داده – ستانده بین منطقه‌ای بسیار پرهزینه و زمان‌براست، اولین سوال قابل طرح این است که آیا ساخت این جداول ضرورت دارد یا خیر؟ و با نادیده گرفتن این اثرات در مدل‌های تک منطقه‌ای خطا...

2012
Muhammad Farhan Peter T. Martin

The regional travel demand models are generally macroscopic in nature and do not include traffic controls in the traffic assignment process. In travel demand models, the road capacities are kept fixed within the functional classification of roadways and free-flow-speeds are adjusted to accommodate the impacts of traffic controls and traffic operations. Part of the reason this approach is adopte...

2011
Peter Nijkamp Jacques Poot

This chapter reviews the evolution of mathematical and statistical models that have been used for the development of theory and policy analysis in regional economics. The benefits of mathematical approaches are outlined. Theories and estimation techniques have developed in tandem with developments in the availability of geo-referenced data, new technologies and particularly computing power. Reg...

Journal: :Dynamics of Atmospheres and Oceans 2002

Journal: :Journal of the Meteorological Society of Japan. Ser. II 2004

Journal: :The planetary science journal 2021

Abstract We present a regional photometric analysis of asteroid (101955) Bennu, using image data from the MapCam color imager OSIRIS-REx Camera Suite (OCAMS). This follows previously reported global which found that Bennu’s roughness was difficult to photometrically model owing unresolved surface variation. Here we find that, even with high-resolution shape (20 cm per facet) and automatic regis...

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