搜索结果: 1-15 共查到“modeling”相关记录1989条 . 查询时间(0.202 秒)
Biomass and Volume Modeling along with Carbon Concentration Variations of Short-Rotation Poplar Plantations
biomass additivity Populus spp quantifying carbon stock short-rotation coppice stem volume equations
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2024/1/22
Short-rotation forestry is of interest to provide biomass for bioenergy and act as a carbon sink to mitigate global warming. The Poplar tree (Populus × xiaohei) is a fast-growing and high-yielding tre...
Modeling Biomass and Nutrients in a Eucalyptus Stand in the Cerrado
non-linear model Schumacher–Hall model aerial biomass nutrient cycling
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2024/1/19
The prediction of biological processes, which involve growth and plant development, is possible via the adjustment of mathematical models. In forest areas, these models assist in management practices,...
New modeling of nuclear device to deflect or destroy asteroids en route to Earth（图）
小行星 核装置 天体物理学
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2024/2/1
The same high energy density that makes nuclear energy a clean and efficient source of power could make it a good alternative to defend the planet against catastrophic asteroid impacts. NASA demonstra...
Use of Optimization Modeling to Assess the Effect of Timber and Carbon Pricing on Harvest Scheduling, Carbon Sequestration, and Net Present Value of Eucalyptus Plantations
timber harvest scheduling mixed-integer programming harvest age carbon sequestration
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2023/12/19
Quantifying the impact of carbon (C) and timber prices on harvest scheduling and economic returns is essential to define strategies for the sustainable management of short-rotation plantations so that...
Ecological niche modeling of the pantropical orchid Polystachya concreta (Orchidaceae) and its response to climate change
CONSERVATION RESOLUTION FOREST AREAS DIVERSITY INVASIONS PATTERNS SHIFTS BRAZIL HOOK
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2023/12/18
Climate is the dominant control factor on the spatial distribution of organisms on a global scale and global warming is predicted to become a major cause of species extinctions. In our study ecologica...
Unmanned?aerial?vehicles (UAV)-based canopy height modeling under leaf-on and leaf-off conditions for determining tree height and crown diameter (case study: Hyrcanian mixed?forest)
canopy height model digital elevation model forest inventory unmanned aerial vehicles (UAVs) tree crown architecture
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2023/12/1
Tree height and crown diameter are two common individual tree attributes that can be estimated from unmanned aerial vehicle (UAV) images thanks to photogrammetry and structure from motion. This resear...
Modeling Tree Growth Responses to Climate Change: A Case Study in Natural Deciduous Mountain Forests
biotic and abiotic factors climate change Hyrcanian Forest machine learning RCP scenarios
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2023/11/22
Climate change has significant effects on forest ecosystems around the world. Since tree diameter increment determines forest volume increment and ultimately forest production, an accurate estimate of...
Modeling the effect of rockfall on forest development in a dynamic forest landscape model
disturbance dynamic forest modeling meta-model protection forest rockfall rockfall-forest feedback TreeMig
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2023/11/20
Mountain forests below rocky cliffs are regularly impacted by falling blocks. Rockfall thus increases tree mortality and can locally alter the forest structure. At the same time, trees can decelerate ...
Spatial confounding in Bayesian species distribution modeling
estimation bias Gaussian process spatial confounding spatial random effect species distribution model
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2023/11/20
Species distribution models (SDMs) are currently the main tools to derive species niche estimates and spatially explicit predictions for species geographical distribution. However, unobserved environm...
Scientists use computational modeling to design “ultrastable” materials（图）
计算建模 “超稳定”材料 金属有机框架
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2023/6/6
Materials known as metal-organic frameworks (MOFs) have a rigid, cage-like structure that lends itself to a variety of applications, from gas storage to drug delivery. By changing the building blocks ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Modeling normalcy-dominant ordinal time series: An application to air quality level
正态主导 有序时间序列 建模 空气质量水平
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2023/5/10
Inspired by the study of air quality level data, we propose a new model for the normalcy-dominant ordinal time series. The proposed model is based on a new zero-one-inflated bounded Poisson distributi...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars： Modeling normalcy-dominant ordinal time series: An application to air quality level
正态主导 有序时间序列 建模 空气质量水平
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2023/5/10
Inspired by the study of air quality level data, we propose a new model for the normalcy-dominant ordinal time series. The proposed model is based on a new zero-one-inflated bounded Poisson distributi...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A New Joint Modeling Approach for Recurrent Event Data with Informative Terminal Event
信息性 终端事件 递归事件 数据联合 建模方法
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2023/5/10
In this article, we propose a new joint modeling approach for recurrent event data with informative terminal event via a gamma frailty by assigning a new type of double exponential Cox mod...
华中科技大学光学与电子信息学院光电学术大讲堂研究生国际化课堂 《Modeling and Control of DC-DC Converters》开讲啦！（图）
田水林 功率变换器 DC-DC变换器
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2023/4/17
2022年9月18日上午8:00，由光学与电子信息学院承办的光电学术大讲堂暨研究生国际化课堂《Modeling and Control of DC-DC Converters》在东九教学楼B402室顺利开展，特聘专家田水林博士用流利的英文进行了首次4学时的授课，选修该课程的研一学生全部参加了课堂学习，另外有20余名高年级研究生和本科生线上旁听了课程。田博士将为本课程授课20学时，内容包括DC-DC...
An integrated framework for atmospheric and climate modeling（图）
大气 气候建模 集成框架
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2023/5/17
Cornell will lead a four-year, $2 million project sponsored by the National Science Foundation to implement a multi-container software framework for the Weather Research and Forecasting (WRF) Model.