搜索结果: 1-15 共查到“Exist”相关记录29条 . 查询时间(0.062 秒)
On the complexity of constructing pseudorandom functions (especially when they don't exist)
OWF PRF
2016/4/6
We study the complexity of black-box constructions of pseudorandom functions
(PRF) from one-way functions (OWF) that are secure against non-uniform adversaries.
We show that if OWF do not exist, the...
QUASIHOMOGENEOUS THREE-DIMENSIONAL REAL ANALYTIC LORENTZ METRICS DO NOT EXIST
THREE-DIMENSIONAL LORENTZ METRICS
2015/10/14
We show that a germ of a real analytic Lorentz metric on R
3 which is locally homogeneous on an
open set containing the origin in its closure is necessarily locally homogeneous. We classifiy L...
We construct a hyperbolic group with a hyperbolic subgroup for which inclusion does not induce a map of the boundaries.
Wei-xiong Huang Explain Cosmic Mysteries-Black Holes Do Not Exist
stellar mass black holes
2015/5/28
1. Celestial body center temperature is proportional to cube root of stellar mass. 2. When stellar temperature exceeds boiling point of all elements, stellar density is inversely proportional to cube ...
Fairer Service Exchange Mechanisms for Tennis When Some Psychological Factors Exist
Rules in tennis psychological advantage back-to-the-wall effect in tennis cricket fairness
2015/3/23
In a tennis match it is not uncommon for games to ‘go with service’ (ie. 1-0, 1-1, 2-1, 2-2, 3-2, so on). When this occurs, the player who serves first is either ahead by one game, or the games’ score...
The Repeated Bout Effect: Does Evidence for a Crossover Effect Exist?
Eccentric exercise muscle damage protection contralateral
2015/3/10
Individuals undergoing an unaccustomed exercise bout incorporating a high degree of eccentric muscle contractions commonly experience delayed onset muscle soreness. The damage manifests itself via ten...
Postdischarge quality of care: Do age disparities exist among Department of Veterans Affairs ischemic stroke patients?
postdischarge care quality of healthcare stroke medical record review
2014/11/26
This study examined whether age disparities existed across postdischarge quality indicators (QIs) for veterans with ischemic stroke who received care at Department of
Veterans Affairs medical centers...
The Non--federal Match Requirement For Head Start: Why Does it Exist and How Does it Affect A Local Head Start Program?
Head Start A Local Head Start Program
2014/10/20
This paper looks at the relationship between the non--‐federal match requirement for Head Start Programs and program operations with regard to parent engagement. It argues that the purpose of non--‐fe...
Scalar Equivalence in Self-Rated Depressive Symptomatology as Measured by the Beck Depression Inventory-II: Do Racial and Gender Differences in College Students Exist?
Differential Item Functioning (DIF) Depression Depressive Symptoms Race Gender Scalar Equivalence Item Response Theory (IRT) Confirmatory Factor Analysis American College Students
2013/2/20
Using item response theory and confirmatory factor analysis, the current investigation examined the equivalence in responses derived from the widely used 21-item Beck Depression Inventory-II (BDI-II; ...
There exist multilinear Bohnenblust-Hille constants $(C_{n})_{n=1}^{\infty}$ with $\displaystyle \lim_{n\rightarrow \infty}(C_{n+1}-C_{n}) =0.$
Bohnenblust–Hille inequality Functional Analysis
2012/7/11
The multilinear version of the Bohnenblust-Hille inequality asserts that for every positive integer $m\geq1$ there exists a sequence of positive constants $C_{m}\geq1$ such that% \[(\sum\limits_{i_{1}...
Cannon-Thurston maps do not always exist
hyperbolic group Cannon–Thurston map Group Theory
2012/6/19
We construct an example of a hyperbolic group with a hyperbolic subgroup for which the Cannon-Thurston map does not exist. That is, inclusion does not induce a map of the boundaries.
Does Quantum Interference exist in Twitter?
Quantum Twitter Social and Information Networks
2011/9/29
Abstract: It becomes more difficult to explain the social information transfer phenomena using the classic models based merely on Shannon Information Theory (SIT) and Classic Probability Theory (CPT),...
Invariant Monotone Coupling Need Not Exist
Invariant Monotone Coupling Need Not Exist math
2010/11/15
We show by example that there is a Cayley graph and two invariant random subgraphs $X$ and $Y$ of it such that there exists a monotone coupling between them in the sense that $X \subset Y$ but no suc...
Long distance transport of assimilates is shown to exist in soybean plants
Pod number seed size assimilate translocation node number
2011/1/10
Effect of source-sink distance on soybean yield was studied. Our hypothesis was that soybean can redistribute assimilates from lower leaves to young pods formed at youngest part of stems across the ma...
We examine the effects of relaxing the assumption of quasi-charge neutrality on the propagation of stationary whistler waves. This necessitates that in the wave frame the equations of motion must be m...