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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Isometric embedding and fluid mechanics
等距嵌入 流体力学 理论流体力学
2023/5/10
In this talk, I first discuss isometric embedding from differential geometry and its relation with fluid mechanic equations. Then I will present recent progress and my works on isometric embeddings of...
AN ISOMETRIC MAPPING BASED CO-LOCATION DECISION TREE ALGORITHM
Decision tree (DT) Co-location (Cl) Data mining Isometric mapping (Isomap) Geodetic distances Algorithm
2018/5/17
Decision tree (DT) induction has been widely used in different pattern classification. However, most traditional DTs have the disadvantage that they consider only non-spatial attributes (ie, spectral ...
The effect of 6 days of alpha glycerylphosphorylcholine on isometric strength
Alpha glycerylphosphorylcholine Strength Human performance Sport supplements
2015/12/2
Ergogenic aides are widely used by fitness enthusiasts and athletes to increase performance. Alpha glycerylphosphorylcholine (A-GPC) has demonstrated some initial promise in changing explosive perform...
Isometric actions of Heisenberg groups on compact Lorentz manifolds
Heisenberg groupsl Lorentz manifolds
2015/10/14
We prove results toward classifying compact Lorentz manifolds on
which Heisenberg groups act isometrically. We give a general construction,
leading to a new example, of codimension-one actions—those...
The Margulis Invariant of Isometric Actions on Minkowski (2+1)-Space
Minkowski (2+1)-Space Isometric Actions
2015/9/29
Let E denote an a±ne space modelled on Minkowski (2+1)-space E
and let ¡ be a group of isometries whose linear part L(¡) is a purely hyperbolic
subgroup of SO0
(2;1). Margulis has deˉned ...
Recently, the Isomap procedure [1] was proposed as a new way to recover a low-dimensional
parametrization of data lying on a low-dimensional submanifold in high-dimensional space.
The method assumes...
β-alanine supplementation improves isometric endurance of the knee extensor muscles
β-alanine Carnosine Isometric endurance
2015/7/23
=We examined the effect of four weeks of β-alanine supplementation on isometric endurance of the
knee extensors at 45% maximal voluntary isometric contraction (MVIC).
Assessment of Isometric Trunk Strength – The Relevance of Body Position and Relationship between Planes of Movement
Voluntary force testing hip angle low back pain
2015/5/22
The aim of the study was to assess the differences in maximal isometric trunk extension and flexion strength during standing, sitting and kneeling. Additionally, we were interested in correlations bet...
Relations Between Lower Body Isometric Muscle Force Characteristics and Start Performance in Elite Male Sprint Swimmers
Start performance maximum voluntary forces rate of force development
2015/5/19
The aim of the present study was twofold. The first aim was to examine the influence of absolute and relative lower body muscle force on kinematic component which determine the start performance. The ...
Isometric Gluteus Medius Muscle Torque and Frontal Plane Pelvic Motion During Running
Strength kinematics Trendelenburg
2015/4/22
The objective of this study was to investigate the relationship between isometric GM torque and the degree of frontal plane pelvic drop during running. Twenty-one healthy, recreational runners (9 male...
Effects of ContractRelax, Static Stretching, and Isometric Contractions on MuscleTendon Mechanics
PROPRIOCEPTIVE NEUROMUSCULAR FACILITATION RANGE OF MOTION TENDON STIFFNESS STRETCH TOLERANCE ULTRASONOGRAPHY
2017/4/20
Introduction: Loading characteristics of stretching techniques likely influence the specific mechanisms responsible for acute increases in range of motion (ROM). Therefore, the effects of a version of...
The Relationship Between Isometric and Dynamic Strength in College Football Players
Isometric strength American football power
2015/4/7
Previous research has demonstrated the importance of both dynamic and isometric maximal strength and rate of force development (RFD) in athletic populations. The purpose of this study was to examine t...
Absence of Gender Differences in the Fatigability of the Forearm Muscles During Intermittent Isometric Handgrip Exercise
Muscle fatigue gender differences handgrip
2015/3/30
Previous studies have reported women to have a greater resistance to fatigue than men during sustained handgrip exercise, however, observed gender differences in fatigue has been shown to be a functio...
The Importance Of Isometric Maximum Strength In College Wrestlers
Isometric strength wrestling power
2015/3/26
Previous research has demonstrated the importance of isometric maximal strength (PF) and rate of force development (RFD) in a variety of athletic populations including track cyclists and track and fie...
The Influence of Vibration on Muscle Activation and Rate of Force Development during Maximal Isometric Contractions
Strength oscillations isometric peak muscle activation
2015/3/12
At present there appears to be a need for research conducted on the effects of vibration on the contractile ability of skeletal muscle tissue. The aim of this study was to address this issue by examin...