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Now showing items 1-20 of 65

#### Organizational Structure and the Diversification Discount: Evidence from Commercial Banking

(Blackwell, 2008)

This paper provides evidence on organizational structure, geographic diversification, and performance at bank holding companies (BHCs). First, we show that a BHC's member banks benefit from access to the parent organization's ...

#### Can Entrepreneurship Be Taught?

(2006-02)

Is entrepreneurship an innate ability or an acquired skill? Can entrepreneurial acumen
be achieved and enhanced through education and training, or are certain people “born” to be entrepreneurs
or to act entrepreneurially? ...

#### Multiplicative Structure of Values of the Euler Function

(2004)

We establish upper bounds for the number of smooth values of the Euler function. In particular, although the Euler function has
a certain “smoothing” effect on its integer arguments, our results show that, in fact, most ...

#### Congruences and Exponential Sums with the Euler Function

(2004)

We give upper bounds for the number of solutions to congruences with the Euler function φ(n) and with the Carmichael function λ(n). We also give nontrivial bounds for certain exponential sums involving φ(n). Analogous ...

#### Squares from products of integers

(2006)

Notice that 1_2_3_4+1 = 52 , 2_3_4_5+1 = 112 , 3_4_5_6+1 = 192 , . . . . Indeed, it is well known that the product of any four consecutive integers always differs by one from a perfect square. However, a little experimentation ...

#### Disseminated chlorellosis in a dog

(American College of Veterinary Pathologists, 2009)

An adult dog with ataxia and a lingual mass, previously diagnosed as protothecosis, was euthanized. At the postmortem examination, the lingual mass, regions of the lungs and hilar lymph nodes, liver, mesenteric and sublumbar ...

#### Electrochemical properties of carbon nanoparticles entrapped in silica matrix

(Electrochemical Society, 2008)

Carbon-based electrode materials have been widely used for many years for electrochemical charge storage, energy generation, and catalysis. We have developed an electrode material with high specific capacitance by entrapping ...

#### Inequalities of correlation type for symmetric stable random vectors

(2011)

We point out a certain class of functions f and g for which random variables f(X1,...,Xm) and g(Xm+1,...,Xk) are non-negatively correlated for any symmetric jointly stable random variables Xi. We also show another result ...

#### Comparison of sums of independent identically distributed random variables

(2011)

Let Sk be the k-th partial sum of Banach space valued independent identically distributed random variables. In this paper, we compare the tail distribution of ∥Sk∥ with that of ∥Sj∥, and deduce some tail distribution maximal ...

#### Hahn's embedding theorem for orders and harmonic analysis on groups with ordered duals

(2011)

Let G be a locally compact abelian group whose dual group Γ contains a Haar measurable order P. Using the order P we define the conjugate function operator on Lp(G), 1 ≤ p < ∞, as was done by Helson. We will show how to ...

#### Measuring the magnitude of sums of independent random variables

(2011)

This paper considers how to measure the magnitude of the sum of independent random variables in several ways. We give a formula for the tail distribution for sequences that satisfy the so called Lévy property. We then give ...

#### Concrete representation of martingales

(2011)

Let (fn) be a mean zero vector valued martingale sequence. Then there exist vector valued functions (dn) from [0,1]n such that ∫01 dn(x1,...,xn) dxn = 0 for almost all x1,...,xn-1, and such that the law of (fn) is the same ...

#### A transference theorem for ergodic H1

(2011)

In this paper, we extend the basic transference theorem for convolution operators on Lp spaces of Coifman and Weiss to H1 spaces.

#### Orlicz-Lorentz Spaces

(2011)

The purpose of this article is to summerize some recent results of the author about Orlicz-Lorentz spaces - function spaces that provide a common generalization of Orlicz spaces and Lorentz spaces.

#### Some conjectures about integral means of ∂f and ∂¯f

(2011)

We discuss some conjectural inequalities concerning a problem from the calculus of variations, namely that rank 1 convex functions are quasi-convex. An affirmative answer would also give the best constants for the ...

#### Evolutionary semigroups and Lyapunov theorems in Banach spaces

(2011)

We study evolutionary semigroups generated by a strongly continuous semi-cocycle over a locally compact metric space acting on Banach fibers. This setting simultaneously covers evolutionary semigroups arising from ...

#### Temperature and heat flux estimation from sampled transient sensor measurements

(2011)

Laplace transform is used to solve the problem of heat conduction over a finite slab. The temperature and heat flux on the two surfaces of a slab are related by the transfer functions. These relationships can be used to ...

#### Analysis of point-to-point packet delay in an operational network, Computer Networks

(Elesevier, 2007-09-12)

In this paper, we perform a detailed analysis of point-to-point packet delay in an operational tier-1 network. The point-to-point delay is the time experienced by a packet from an ingress to an egress point in an ISP, and ...

#### QoS and channel aware packet bundling for VoIP traffic in cellular networks

(IEEE, 2009-09-16)

We study the problem of multiple packet bundling to improve spectral efficiency in cellular networks. The packet size of real-time data, such as VoIP, is often very small. However, the use of time division multiplexing ...

#### Adaptive Random Sampling for Traffic Volume Measurement

(Springer Science, 2007-02)

Traffic measurement and monitoring are an important component of network management and traffic engineering. With high-speed Internet backbone links, efficient and effective packet sampling techniques for traffic measurement ...