Results 61 to 70 of about 557,810 (361)

Fractal Modeling and Fractal Dimension Description of Urban Morphology [PDF]

open access: yesEntropy, 2020,22: 961, 2018
The conventional mathematical methods are based on characteristic length, while urban form has no characteristic length in many aspects. Urban area is a measure of scale dependence, which indicates the scale-free distribution of urban patterns. Thus, the urban description based on characteristic lengths should be replaced by urban characterization ...
arxiv   +1 more source

Impacts of geopolitics and policy on Latin American biodiversity and water resources

open access: yesAgribusiness, EarlyView.
Abstract Latin America is a major agricultural producer with important natural resources. Efforts have been made to protect sensitive areas but are hindered by agricultural trade disruptions outside the control of individual countries due to globally integrated crop markets.
Jerome Dumortier   +2 more
wiley   +1 more source

A multi-object detection method for building fire warnings through artificial intelligence generated content

open access: yesScientific Reports
Timely fire warnings are crucial for minimizing casualties during building fires. In this paper, a multi-object detection method through artificial intelligence generated content (AIGC) is proposed to improve building fire warning capability.
Jingwei Fu   +6 more
doaj   +1 more source

A comparison of simple models for urban morphogenesis [PDF]

open access: yesarXiv, 2020
The spatial distribution of population and activities within urban areas, or urban form at the mesoscopic scale, is the outcome of multiple antagonist processes. We propose in this paper to benchmark different models of urban morphogenesis, to systematically compare the urban forms they can produce. Different types of approaches are included, such as a
arxiv  

Urban Settlement: Data, Measures, and Trends [PDF]

open access: yes
This paper examines data on urbanization. We review the most commonly used data sources and highlight the difficulties inherent in defining and measuring the size of urban versus rural populations.
David Canning   +4 more
core   +3 more sources

Assessing Agricultural Green Total Factor Productivity in Latin America

open access: yesAgribusiness, EarlyView.
ABSTRACT The agricultural sector in Latin America plays a vital role in ensuring food security while impacting the environment. However, there remains a lack of analysis regarding the inputs responsible for pollution within its sub‐technologies. Hence, this article aims to assess agricultural green total factor productivity (TFP) through a novel ...
Tianxiang Li   +2 more
wiley   +1 more source

Identifying Leaf Phenology of Deciduous Broadleaf Forests from PhenoCam Images Using a Convolutional Neural Network Regression Method

open access: yesRemote Sensing, 2021
Vegetation phenology plays a key role in influencing ecosystem processes and biosphere-atmosphere feedbacks. Digital cameras such as PhenoCam that monitor vegetation canopies in near real-time provide continuous images that record phenological and ...
Mengying Cao   +4 more
doaj   +1 more source

Unbounded urbanization and the Horizontal Metropolis : the pragmatic program of August Mennes in the Antwerp agglomeration [PDF]

open access: yes, 2015
Parallel to many discussions in other European cities, the debate on a metropolitan Antwerp emerged at the turn of the 20th century, following the decision to tear down the old ramparts around the city in 1904. Once boundless, the old core became for the
Broes, Tom, Dehaene, Michiel
core   +1 more source

Agricultural Diversification at the Margin. Strategies and Determinants in Italian Mountain and Remote Areas

open access: yesAgribusiness, EarlyView.
ABSTRACT This paper explores the convergence in on‐farm diversification strategies of agricultural holdings, between remote areas and more central ones. Using Italian farm‐level data, we explore the determinants of diversification strategies across farms.
Gianluca Grilli   +2 more
wiley   +1 more source

Mapping Multi-Temporal Population Distribution in China from 1985 to 2010 Using Landsat Images via Deep Learning

open access: yesRemote Sensing, 2021
Fine knowledge of the spatiotemporal distribution of the population is fundamental in a wide range of fields, including resource management, disaster response, public health, and urban planning.
Haoming Zhuang   +5 more
doaj   +1 more source

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