When a risk factor has small covariance with asset returns, risk premia in the linear asset pricing models are no longer identified. Weak factors, similar to weak instruments, make the usual estimation techniques unreliable. When included in the model, they generate spuriously high significance levels of their own risk premia estimates, overall measures of fit and may crowd out the impact of th...

The asymptotic normality of the sample mean of iid rv 's is equivalent to the well known conditions of Levy or Feller. More recently, additional equivalences have been developed in terms of the quantile function (qf). And other useful probabilistic equivalences could be cited. The emphasis here is on equivalences, and many other useful and informative equivalences will be developed. Many depend...

Interesting tasks are scarce. Yet they are essential as an investigation material, if we are to understand the structure of the tasks world. We propose a new family of tasks called 0-1 Exclusion tasks, and show it is an interesting family. A 0-1 Exclusion task on n processors is specified by a sequence of n− 1 bits b(1), b(2), ..., b(n− 1). For participating set of size k, 0 < k < n, each proce...

In this article we study nonparametric estimation of regression quantiles by inverting a weighted Nadaraya-Watson estimator (WNW) of conditional distribution function, which was rst used by Hall, Woll and Yao (1999). First, under some regularity conditions, we establish the asymptotic normality and weak consistency of the WNW conditional distribution estimator for-mixing time series at both bou...

We study Banach spaces with a weak stable unit ball, that is, where every convex combination of relatively weakly open subsets in its ball is again subset ball. It proved the class L1 preduals agree those which are purely atomic, ℓ1(Γ) for some set Γ, getting this way complete geometrical characterization atomic L1, answers setting problem. As consequence, we prove equivalence different propert...

In this paper, we propose and investigate a new strategy for max-SAT problems. The proposed approach consists of a unit propagation strategy combined with a genetic algorithm. Based on the two strategies, we hope to propose an exact solver for max-SAT. The principal goal is to reduce the run-time of the unit propagation – based exact method. The latter is applied on partial assignments with few...

there is a growing consensus that heterogeneous multicores are the future of CPUs. These processors would be composed of cores that are specifically adapted or tuned to particular types of applications and use cases, thereby increasing performance. The move from homogeneous to heterogeneous multicores causes the design space to explode, however. An architect of a heterogeneous processor must ma...

In the crystal structure, the title compound, C(24)H(22)O(8), lies on a twofold rotation axis and the asymmetric unit comprises one half-mol-ecule. The dihedral angle formed by the coumarin unit with the symmetry-related part is 74.78 (14)°. One of the meth-oxy groups attached to the coumarin unit is considerably twisted, making an angle of 87.17 (17)° with respect to the coumarin unit; the oth...

let $t$ be a bounded operator on the banach space $x$ and $ph$ be an analytic self-map of the unit disk $bbb{d}$‎. ‎we investigate some operator theoretic properties of‎ ‎bilateral composition operator $c_{ph‎, ‎t}‎: ‎f ri t circ f circ ph$ on the vector-valued hardy space $h^p(x)$ for $1 leq p leq‎ ‎+infty$.‎ ‎compactness and weak compactness of $c_{ph‎, ‎t}$ on $h^p(x)$‎ ‎are characterized an...