搜索结果: 1-15 共查到“理学 Constraints”相关记录273条 . 查询时间(0.109 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Approximate Envy-freeness in Indivisible Resource Allocation with Budget Constraints
预算约束 不可分割 资源分配 近似无嫉妒
2023/4/14
We study the fair allocation of indivisible resources under knapsack constraints, where a set of items with varied costs and values are to be allocated to a group of agents. Each agent has a budget co...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Primal Dual Alternating Proximal Gradient Algorithms for Nonsmooth Nonconvex Minimax Problems with Coupled Linear Constraints
耦合 线性约束 非光滑 非凸极小问题 基本对偶交替 近端梯度算法
2023/4/14
Nonconvex minimax problems have attracted wide attention in machine learning, signal processing and many other fields in recent years. In this paper, we propose a primal dual alternating proximal grad...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Job Matching with Interventions: Constraints, Subsidy, and Taxation
工作匹配 替代条件 市场均衡
2023/4/18
In markets for indivisible resources such as workers and objects, subsidy and taxation for an agent may depend on the set of acquired resources and prices. This paper investigates how such transfer po...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Distributed Event-Triggered Algorithm for Convex Optimization with Coupled Constraints
耦合约束凸优化 分布式事件 触发算法
2023/5/17
This talk concerns the nonsmooth distributed optimization problem via multi-agent network with the coupled equality and inequality constraints. The considered global optimization problem is to minimiz...
Vegetation growth in Northern Hemisphere stunted by water constraints in warming climate
warming climate water constraints vegetation growth greenhouse gass
2021/8/4
A new study of vegetation growth in the Northern Hemisphere over the past 30 years has found that vegetation is becoming increasingly water-limited as global temperatures increase, which has the poten...
中国地质大学科学技术发展院袁悦锋*，王凤华*，朱培民等，地空学院， Geophysical Research Letters（2020）. New Constraints on the Young Lava Flow Profile in the Northern Mare Imbrium（图）
月球；雨海北部；年轻；爱拉托逊纪；熔岩流；多期性
2021/10/15
近日，地球物理著名期刊《Geophysical Research Letters》刊发了我校地空学院袁悦锋博士后、朱培民教授和肖龙教授，联合长江大学、宁波财经大学合作者的研究成果——New constraints on the young lava flow profile in the northern Mare Imbrium。该研究通过重新分析嫦娥三号低频雷达浅层数据，推测出月球雨海北部年轻...
中国地质大学科学技术发展院常标(博士生)，李超*，黄俊华*等. BGEG国家重点实验室, Proceedings of the National Academy of Sciences of United States of America（2020），Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the “dolomite problem”
早期海洋；大规模；早期；白云石；
2021/10/15
2020年6月8日，生物地质与环境地质国家重点实验室李超教授团队在白云石地质成因领域取得重要进展，相关成果发表于国际著名综合性学术期刊《PANS》，题目为《埃迪卡拉纪海洋大规模早期成岩白云石的形成:对“白云石之谜”的约束》，该实验室博士生常标为第一作者，生物地质与环境地质国家重点实验室李超教授、地质过程与矿产资源国家重点实验室黄俊华教授为共同通讯作者。
MESH MODELLING OF 3D POINT CLOUD FROM UAV IMAGES BY POINT CLASSIFICATION AND GEOMETRIC CONSTRAINTS
Surface Reconstruction Surface Normal Point cloud Mesh model
2018/6/4
The point cloud generated by multiple image matching is classified as an unstructured point cloud because it is not regularly point spaced and has multiple viewpoints. The surface reconstruction techn...
Two Types of Granites in the Western Yangtze Block and Their Implications for Regional Tectonic Evolution: Constraints from Geochemistry and Isotopic Data
I-type granite S-type granite geochemistry petrogenesis tectonic setting Western Yangtze Block
2018/4/10
In the western Yangtze Block, widespread Mesoproterozoic to Neoproterozoic rocks are the key to understanding the Precambrian tectonic-magmatic evolution of the region. However, their petrogenesis and...
Constraints on mechanisms of chondrule formation from chondrule precursors and chronology of transient heating events in the protoplanetary disk
chondrules refractory inclusions chondrule precursors transient heating
2017/4/10
The mineralogy, petrography, and oxygen-isotope compositions of porphyritic chondrules—dominant chondrule type
in most chondrite groups—suggest formation by incomplete melting of isotopically diverse...
The I-Xe chronometer and its constraints on the accretion and evolution of planetesimals
extinct radioisotopes iodine-xenon chondrites early solar system chronology
2017/4/10
We report a –1.6 ± 2.6 Myr (1s error) I-Xe age of the ungrouped achondrite NWA 7325 relative to the Shallowater
standard. We re-evaluate the calibration of the relative I-Xe dating system against the...
New constraints on shergottite petrogenesis from analysis of Pb isotopic compositional space: Implications for mantle heterogeneity and crustal assimilation on Mars
shergottite Pb isotopes Martian geochemistry crustal assimilation mantle heterogeneity
2017/4/10
Geochemical studies of shergottites (Martian basalts) based on Rb-Sr, Sm-Nd, and Lu-Hf isotopic systematics have
provided clues to understanding the geochemical evolution of the Martian mantle and id...
Nonparametric and Semiparametric Regressions Subject to Monotonicity Constraints: Estimation and Forecasting
Nonlinearity Nonparametric regression Semiparametric regression Local mono- tonicity Bagging
2016/1/25
This paper considers nonparametric and semiparametric regression models subject to monotonicity constraint. We use bagging as an alternative approach to Hall and Huang (2001). Asymptotic properties of...
Consequences of morphological variation in an intertidal macroalga: physical constraints on the growth and survivorship of Mastocarpus papillatus Kützing
morphological variation Mastocarpus papillatus Kützing
2015/11/12
Consequences of morphological variation in an intertidal macroalga: physical constraints on the growth and survivorship of Mastocarpus papillatus Kützing。
Energy-Efficient Power and Rate Control with QoS Constraints:A Game-Theoretic Approach
Energy-Efficient Power Rate Control QoS Constraints Game-Theoretic Approach
2015/9/29
A game-theoretic model is proposed to study the cross-layer problem of joint power and rate control with quality of service (QoS) constraints in multiple-access networks. In the proposed game, each us...