搜索结果: 1-15 共查到“理学 distribution”相关记录878条 . 查询时间(0.2 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：The distribution on periods of the continued fraction of $\sqrt{d}$
$sqrt{d}$ 连续分数 周期
2023/4/18
The continued fraction is a very old and classical object. Its period is closely related to the solubility of the Pell equations, and also to the class group of quadratic fields. Last year, Koymans an...
中国地质大学科学技术发展院夏宇轩（博士生）,蔡建超等地空学院 2018, FRACTALS-COMPLEX GEOMETR（图）Y PATTERNS AND SCALING IN NATURE AND SOCIETY, A NEW METHOD FOR CALCULATING FRACTAL DIMENSIONS OF POROUS MEDIA BASED ON PORE SIZE DISTRIBUTION
分形；毛细管；假设的；计算；多孔介质；孔隙空间；迂曲度；分形维数
2021/10/21
日前，2018级博士研究生夏宇轩在国际学术期刊《分形》发表题为《一种基于多孔介质孔径分布的分形维数新计算方法》的论文，入选Mathematics学科领域高被引论文。在该论文中，夏宇轩提出了一种基于分形毛细管假设的计算多孔介质孔隙空间和迂曲度分形维数的新方法。
中国科学院新疆理化技术研究所在非线光学响应机理取得突破进展---低能轨道非中心分布机理（Low-energy orbital non-centrosymmetric distribution, LOND）（图）
非线光学 响应机理 低能轨道 非中心分布
2021/3/1
非线性光学因为它的高阶物理过程而独具魅力，在固体激光，物质探测，光子通信，量子纠缠，量子隐形传输等领域都有广泛应用。1961年科学家们在石英晶体中观测到了激光的二阶非线性过程。随后，非线性光学迎来了飞跃的发展。在非线性光学微观机理研究方面，从化学键、原子尺度上发展了许多理论模型和近似的方法，包括非谐振子模型、双能级模型、键电荷模型、键参数模型、电荷转移理论等，为非线性光学材料的内在机理和设计合成方...
Study analyzing cells' blueprints reveals new patterns in the global distribution and diversity of ocean microbes（图）
Study analyzing cells blueprints reveals new patterns global distribution diversity ocean microbes
2019/12/27
A single drop of seawater can contain a wide representation of ocean microbes from around the world -- revealing new insights into the ecology, evolution and biotechnology potential of the global micr...
STUDY ON THE DISTRIBUTION OF GEOLOGICAL HAZARDS BASED ON FRACTAL CHARACTERISTICS – A CASE STUDY OF DACHUAN DISTRICT
Geologic Hazard Fractal Theory Fractal Dimension Self Correlation Risk Zoning
2018/5/15
It is a complicated process to analyze the cause of geological hazard. Through the analysis function of GIS software, 250 landslides were randomly selected from 395 landslide hazards in the study area...
RAPID EXTRACTION OF LANDSLIDE AND SPATIAL DISTRIBUTION ANALYSIS AFTER JIUZHAIGOU Ms7.0 EARTHQUAKE BASED ON UAV IMAGES
Jiuzhaigou earthquake UAV object-oriented landslide extraction spatial distribution analysis
2018/5/14
Jiuzhaigou earthquake led to the collapse of the mountains and formed lots of landslides in Jiuzhaigou scenic spot and surrounding roads which caused road blockage and serious ecological damage. Due t...
A LANDMARK EXTRACTION METHOD ASSOCIATED WITH GEOMETRIC FEATURES AND LOCATION DISTRIBUTION
Landmark Extraction Geometric Features Crevice Horizon Segmentation Voronoi Diagram
2018/5/16
Landmark plays an important role in spatial cognition and spatial knowledge organization. Significance measuring model is the main method of landmark extraction. It is difficult to take account of the...
Examining the distribution and dynamics of impervious surface in different function zones in Beijing
impervious surface landscape metrics classification and regression tree (CART) function zones Lorenz curve contribution index
2018/4/9
Impervious surface (IS) is often recognized as the indicator of urban environmental changes. Numerous research efforts have been devoted to studying its spatio-temporal dynamics and ecological effects...
Within-day protein distribution does not influence body composition responses during weight loss in resistance-training adults who are overweight
exercise weight loss muscle mass heart health protein patterning
2018/11/20
Background: Emerging research suggests that redistributing total protein intake from 1 high-protein meal/d to multiple moderately high-protein meals improves 24-h muscle protein synthesis. Over time, ...
中山大学岭南学院高级计量经济学课件（I）CH4 Large Sample Distribution Theory and Large Sample Properties of the Classical Regression Model
中山大学岭南学院 高级计量经济学 课件（I） CH4 Large Sample Distribution Theory and Large Sample Properties of the Classical Regression Model
2017/6/14
中山大学岭南学院高级计量经济学课件（I）CH4 Large Sample Distribution Theory and Large Sample Properties of the Classical Regression Model。
Distribution and accumulation of heavy metals in sediments of the northern part of mangrove in Hara Biosphere Reserve, Qeshm Island (Persian Gulf)
anthropogenic contamination ecological risk pollution sediments
2017/6/26
The mangrove of Hara Biosphere Reserve, stretching over 100 thousand hectares in the southern coast of Iran and in the northwest of Qeshm Island, belongs to the most important and largest mangroves in...
昆明理工大学理学院概率论与数理统计课件Chapter 3 Multionariate Random Variables--Distribution of special functions
昆明理工大学理学院 概率论与数理统计 课件 Chapter 3 Multionariate Random Variables Distribution of special functions
2017/4/17
昆明理工大学理学院概率论与数理统计课件Chapter 3 Multionariate Random Variables--Distribution of special functions.
昆明理工大学理学院概率论与数理统计课件Chapter 3 Multionariate Random Variables--Two particular multivariate distribution
昆明理工大学理学院 概率论与数理统计 课件 Chapter 3 Multionariate Random Variables Two particular multivariate distribution
2017/4/17
昆明理工大学理学院概率论与数理统计课件Chapter 3 Multionariate Random Variables--Two particular multivariate distribution.
昆明理工大学理学院概率论与数理统计课件Chapter 3 Multionariate Random Variables--Cumulative distribution function
昆明理工大学理学院 概率论与数理统计 课件 Chapter 3 Multionariate Random Variables Cumulative distribution function
2017/4/17
昆明理工大学理学院概率论与数理统计课件Chapter 3 Multionariate Random Variables--Cumulative distribution function.
昆明理工大学理学院概率论与数理统计课件Chapter 2 Random variables and their distributions--Cumulative Distribution Functions
昆明理工大学理学院 概率论与数理统计 课件 Chapter 2 Random variables and their distributions Cumulative Distribution Functions
2017/4/17
昆明理工大学理学院概率论与数理统计课件Chapter 2 Random variables and their distributions--Cumulative Distribution Functions.
