## Search

Now showing items 1-10 of 125

#### Software Simulation of 5-Axis CNC Milling using Multidirectional Heightmaps

(University of Waterloo, 2010-09-22)

Machinists often simulate a part program to verify its correctness, since mistakes
can cause damage to the part, machine, oneself, or others. A popular approach for
part program simulation involves representing the stock ...

#### Mobile Spatial Subscriptions for Location-Aware Services

(University of Waterloo, 2010-09-27)

Spatial subscriptions have been used to specify locations of interest in Distributed Event-based Systems (DEBSs). However, current DEBSs representations to support spatial subscriptions are not expressive enough to describe ...

#### Two Affine Scaling Methods for Solving Optimization Problems Regularized with an L1-norm

(University of Waterloo, 2010-09-30)

In finance, the implied volatility surface is plotted against strike price and time to maturity.
The shape of this volatility surface can be identified by fitting the model to what is actually
observed in the market. The ...

#### Harmonic analysis of Rajchman algebras

(University of Waterloo, 2010-08-31)

Abstract harmonic analysis is mainly concerned with the study of locally compact
groups, their unitary representations, and the function spaces associated with them.
The Fourier and Fourier-Stieltjes algebras are two of ...

#### Methods for longitudinal data measured at distinct time points

(University of Waterloo, 2010-09-30)

For longitudinal data where the response and time-dependent
predictors within each individual are measured at distinct time
points, traditional longitudinal models such as generalized linear
mixed effects models or ...

#### Computing sparse multiples of polynomials

(University of Waterloo, 2010-08-31)

We consider the problem of finding a sparse multiple of a polynomial. Given
a polynomial f ∈ F[x] of degree d over a field F, and a desired sparsity
t = O(1), our goal is to determine if there exists a multiple h ∈ F[x] ...

#### Upper Bounds for the Number of Integral Points on Quadratic Curves and Surfaces

(University of Waterloo, 2010-04-27)

We are interested in investigating the number of integral points on quadrics.
First, we consider non-degenerate plane conic curves defined over Z.
In particular we look at two types of conic sections: hyperbolas with ...

#### Generic Attacks on Hash Functions

(University of Waterloo, 2010-09-28)

The subject of this thesis is a security property of hash functions, called chosen-target forced-prefix preimage (CTFP) resistance and the generic attack on this property, called the herding attack. The study of CTFP ...

#### Evaluating Large Degree Isogenies between Elliptic Curves

(University of Waterloo, 2010-12-20)

An isogeny between elliptic curves is an algebraic morphism which is a group homomorphism. Many applications in cryptography require evaluating large degree isogenies between elliptic curves efficiently. For ordinary curves ...

#### On Transcendence of Irrationals with Non-eventually Periodic b-adic Expansions

(University of Waterloo, 2010-05-18)

It is known that almost all numbers are transcendental in the sense of Lebesgue measure. However there is no simple rule to separate transcendental numbers from algebraic numbers. Today research in this direction is about ...