搜索结果: 1-15 共查到“理学 shape”相关记录130条 . 查询时间(0.105 秒)
If we could rewind the tape of species evolution around the world and play it forward over hundreds of millions of years to the present day, we would see biodiversity clustering around regions of tect...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Shape-on-Scalar Regression Models: Going Beyond Prealigned Non-Euclidean Responses
标量 形状回归模型 超越预先对齐 非欧几里得
2023/5/5
The problem of using covariates to predict shapes of objects in a regression setting is important in many fields. A formal statistical approach, termed geodesic regression model, is commonly used for ...
Context matters. It’s true for many facets of life, including the tiny molecular machines that perform vital functions inside our cells.
Body size, digestive systems shape ungulate foraging
body size digestive system ngulate plant
2021/8/5
Smaller-bodied ruminants forage primarily for the highest energy intake, while equids -- which tend to be larger -- choose to forage in areas close to surface water, with less attention to forage cond...
In an elegant choreography, plants take cues from their environment and channel them into forms: flowers, roots and branches. In a new paper published in Nature Communications, biologist Doris Wa...
Researchers learn how the cancer-causing stomach bacterium Helicobacter maintains its shape（图）
Researchers cancer-causing stomach bacterium Helicobacter
2020/2/20
NSF-funded scientists reporting in the journal eLife have revealed that they are closer to understanding a risk factor for stomach cancer: how the bacterium Helicobacter pylori...
SHAPE BASED CLASSIFICATION OF SEISMIC BUILDING STRUCTURAL TYPES
Seismic Building Structural Type Classification Machine Learning
2018/11/9
This paper investigates automatic prediction of seismic building structural types described by the Global Earthquake Model (GEM) taxonomy, by combining remote sensing, cadastral and inspection data in...
SHAPE BASED CLASSIFICATION OF SEISMIC BUILDING STRUCTURAL TYPES
Seismic Building Structural Type Classification Machine Learning
2018/11/9
This paper investigates automatic prediction of seismic building structural types described by the Global Earthquake Model (GEM) taxonomy, by combining remote sensing, cadastral and inspection data in...
Shape of Lake Ontario generates white-out blizzards,study shows（图）
Shape of Lake Ontario generates white-out blizzards
2017/11/24
A 6-foot-wide snow blower mounted on a tractor makes a lot of sense when you live on the Tug Hill Plateau. Tug Hill, in upstate New York, is one of the snowiest places in the Eastern U.S. and experien...
Farming,Cheese,Chewing Changed Human Skull Shape（图）
Farming Cheese Chewing Human Skull Shape
2017/9/5
The advent of farming, especially dairy products, had a small but significant effect on the shape of human skulls, according to a recently published study from anthropologists at UC Davis.Put another ...
Bacteria come in all shapes and sizes — some are straight as a rod, others twist like a corkscrew. Shape plays an important role in how bacteria infiltrate and attack cells in the body.The helical sha...
Personality Changes Can Affect Fish Body Shape,Locomotion
Personality Changes Fish Body Shape Locomotion
2016/6/12
Evolutionary change in one trait can elicit evolutionary changes in other traits due to genetic correlations. This constrains the independent evolution of traits and can lead to unpredicted ecological...
COUPLED SPIN AND SHAPE EVOLUTION OF SMALL RUBBLE-PILE ASTEROIDS:SELF-LIMITATION OF THE YORP EFFECT
methods numerical–minor planets,asteroids general
2015/12/25
We present the first self-consistent simulations of the coupled spin-shape evolution of small gravitational aggregates under the influence of the YORP effect. Because of YORP's sensitivity to surface ...
Discrete Gradient Flows for Shape Optimization and Applications
Shape optimization scalar product gradient flow
2015/12/11
We present a variational framework for shape optimization problems
that establishes clear and explicit connections among the continuous formulation, its full discretization and the resulting linear a...
Mechanism of Hollow Nanoparticle Formation Due to Shape Fluctuations
Hollow Nanoparticle Formation Shape Fluctuations
2015/10/16
Shape fluctuations in nanoparticles strongly influence their stability. Here, we introduce a quantitative model of such shape fluctuations and apply this model to the important case of Pt-shell/transi...