Results 81 to 90 of about 1,934 (160)

The Discrete Duality Finite Volume Method for Convection Diffusion Problems [PDF]

, 2010
In this paper we extend the Discrete Duality Finite Volume (DDFV) formulation to the steady convection-diffusion equation. The discrete gradients defined in DDFV are used to define a cell-based gradient for the control volumes of both the primal and dual ...
Coudière, Yves, Manzini, Gianmarco
core   +1 more source

Detection of horizontal transfer of individual genes by anomalous oligomer frequencies [PDF]

, 2012
Background Understanding the history of life requires that we understand the transfer of genetic material across phylogenetic boundaries. Detecting genes that were acquired by means other than vertical descent is a basic step in that process.
Elhai, Jeff, Liu, Hailan, Taton, Arnaud
core   +1 more source

Assessing green space exposure in high density urban areas: A deficiency-sufficiency framework for Shanghai

Ecological Indicators
Urban green spaces enhance residents’ physical and mental health, but rapid urbanization has constrained green space exposure (GSE). While studies highlight the need for multidimensional GSE quantification, many lack methods to assess sufficiency or ...
Xinbei Wang, ChengHe Guan
doaj   +1 more source

Interannual variation in global-scale net primary production: Testing model estimates [PDF]

, 1997
Testing estimates of year‐to‐year variation in global net primary production (NPP) poses some challenges. Large‐scale, multiyear records of production are not readily available for natural systems but are for agricultural systems.
Field, Christopher B., Juday, Glenn P., Los, Sietse O., Malmström, Carolyn M., Randerson, James T., Thompson, Matthew V.   +5 more
core  

Emotional Perceptions of Thermal Comfort for People Exposed to Green Spaces Characterized Using Streetscapes in Urban Parks

Land
Thermal comfort is a key determinant ruling the quality of urban park visits that is mainly evaluated by equivalent meteorological factors and lacks evidence about its relationship with emotional perception.
Benlu Xin, Chengfeng Zhu, Jingjing Geng, Yanqi Liu   +3 more
doaj   +1 more source

Tracking green space along streets of world cities

Environmental Research: Infrastructure and Sustainability
Street green space (SGS) - the presence of vegetation along streets of cities—is a key piece of urban infrastructure. SGS provides a broad range of functions, such as mitigating the urban heat island effect, reducing the impact of extreme precipitation ...
Giacomo Falchetta, Ahmed T Hammad
doaj   +1 more source

A Dynamic Assessment of Disparities in Greenspace Exposure from a Time and Age Perspective: Comparing Lockdown and Non-Lockdown Periods

Ecosystem Health and Sustainability
Urban greenspace has a profound impact on public health by purifying the air, blocking bacteria, and creating activity venues. Due to people’s different position, the greenspace exposure to different age groups changes at various times. In this study, we
Xiaoxu Yin, Yimeng Song, Lijun Zhang, Lihua Hu, Dong Li, Ziqing Liu, Fangzheng Li   +6 more
doaj   +1 more source

Research into the Influence Mechanisms of Visual-Comfort and Landscape Indicators of Urban Green Spaces

Land
Urban green spaces play a crucial role in providing social services and enhancing residents’ mental health. It is essential for sustainable urban planning to explore the relationship between urban green spaces and human perceptions, particularly their ...
Yumeng Meng, Jiaxuan Shi, Mei Lyu, Dong Sun, Hiroatsu Fukuda   +4 more
doaj   +1 more source

FIREX mission requirements document for renewable resources [PDF]

The initial experimental program and mission requirements for a satellite synthetic aperture radar (SAR) system FIREX (Free-Flying Imaging Radar Experiment) for renewable resources is described.
Carsey, F., Dixon, T.
core   +1 more source

Comparaison d'isolats du virus de la striure de l'arachide à l'aide de la symptomatologie sur les hôtes spécifiques et de la sérologie [PDF]

, 1990
Vingt-quatre isolats du virus de la striure de l'arachide provenant de 8 pays ont été comparés dans des conditions contrôlées au Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) à Montpellier, France.
Dollet, Michel, Wohgkaew, S.
core