## Search

Now showing items 1-10 of 26

#### Invariants of Modular Two-Row Groups

(2009-10-06)

It is known that the ring of invariants of any two-row group is Cohen-Macaulay.
This result inspired the conjecture that the ring of invariants of any two-row group is a complete intersection. In this thesis, we study ...

#### Jacobian linearisation in a geometric setting

(IEEE, 2003)

Linearisation is a common technique in control applications, putting useful
analysis and design methodologies at the disposal of the control engineer.
In this paper, linearisation is studied from a differential ...

#### Nonparametric statistical procedures for therapeutic clinical trials with survival endpoints

(2007-08-02)

This thesis proposed two nonparametric statistical tests, based on the Kolmogorov-Smirnov distance and L2 mallows disatnce.
To implement the proposed tests, nonparametric bootstrap method is employed to approximate the ...

#### Geodesic reduction via frame bundle geometry

(2007-07-25)

Reduction theory for systems with symmetry deals with the problem of understanding dynamics on a manifold with an action of a Lie group. In geometric mechanics, this problem can be formulated in the Lagrangian, Hamiltonian ...

#### Hybrid Digital-Analog Source-Channel Coding and Information Hiding: Information-Theoretic Perspectives

(2007-10-02)

Joint source-channel coding (JSCC) has been acknowledged to have
superior performance over separate source-channel coding in terms of
coding efficiency, delay and complexity. In the first part of this
thesis, we study ...

#### Tilting objects in derived categories of equivariant sheaves

(2008-09-05)

We construct classical tilting objects in derived categories of equivariant sheaves on quasi-projective varieties,
which give equivalences with derived categories of modules over algebras. Our applications include a ...

#### Minimal Presentations of Sofic Shifts and Properties of Periodic-Finite-Type Shifts

(2009-08-12)

Constrained codes have been used in data storage systems, such as magnetic tapes,
CD’s and DVD’s, in order to reduce the likelihood of errors by predictable noise.
The study of constrained codes is based on the study of ...

#### Performance analysis of linear block codes over the queue-based channel

(2007-08-29)

Most coding schemes used in today's communication systems are designed for memoryless channels. These codes break down when they are transmitted over channels
with memory, which is in fact what real-world channels look ...

#### Data-driven estimation for Aalen's additive risk model

(2007-08-02)

The proportional hazards model developed by Cox (1972) is by far the most widely used method for regression analysis of censored survival data. Application of the Cox model to more general event history data has become ...

#### Transcendence of Various Infinite Series and Applications of Baker's Theorem

(2009-11-13)

We consider various infinite series and examine their arithmetic nature. Series of interest are of the form $$\sum_{n =0}^{\infty} \frac{f(n)A(n)}{B(n)}, \;\;\;\; \sum_{n \in \mathbb{Z}}\frac{f(n)A(n)}{B(n)}, \;\;\;\; ...