The AF structure of non commutative toroidal Z/4Z orbifolds

For any irrational theta and rational number p/q such that q|qtheta-p|<1, a projection e of trace q|qtheta-p| is constructed in the the irrational rotation algebra A_theta that is invariant under the Fourier transform. (The latter is the order four automorphism U mapped to V, V mapped to U^{-1}, where U, V are the canonical unitaries generating A_theta.) Further, the projection e is approximately central, the cut down algebra eA_theta e contains a Fourier invariant q x q matrix algebra whose unit is e, and the cut downs eUe, eVe are approximately inside the matrix algebra. (In particular, there are Fourier invariant projections of trace k|qtheta-p| for k=1,...,q.) It is also shown that for all theta the crossed product A_theta rtimes Z_4 satisfies the Universal Coefficient Theorem. (Z_4 := Z/4Z.) As a consequence, using the Classification Theorem of G. Elliott and G. Gong for AH-algebras, a theorem of M. Rieffel, and by recent results of H. Lin, we show that A_theta rtimes Z_4 is an AF-algebra for all irrational theta in a dense G_delta.Comment: 35 page

Restoring Trust Relationships within Collaborative Digital Preservation Federations

4th International Conference on Open RepositoriesThis presentation was part of the session : Conference PresentationsDate: 2009-05-19 01:00 PM – 02:30 PMThe authors extend their process for creating and establishing trust relationships to include steps for restoring trust relationships after catastrophic events. Part of this model will include best practices for business continuity relationships and will integrate trust models from Holland and Lockett (1998) and Ring and Van de Ven (1994) and how they can be applied to a process for trust restoration after periods of disaster or critical data loss. These models provide key frameworks for understanding how trust can be utilized for collaborative start points as well as for collaborative recovery points from physical natural disaster or critical data loss

Service of process in the United States under Insolvency Rule 12.12

Explains the procedure to be followed by a UK based liquidator wishing to serve insolvency proceedings on parties based in the US under the Insolvency Rules 1986 r.12.12. Discusses the rule's requirements for obtaining leave of the court for service outside the jurisdiction, the court's discretion to order the manner of service, including the approach of the Chancery Division in Re Busytoday Ltd, and the obligations imposed by the Hague Convention on the Service Abroad of Judicial and Extrajudicial Documents in Civil or Commercial Matters 1965. Evaluates the methods of service authorised by the Convention and details the main elements involved in service by the Central Authority route or by a local process server

Pressure Treated Wood

Discusses chemical treatments to increase wood's fire resistance and protect it from rot and termites

An Examination of Six “Nutting Stones” from East Texas for Plant Phytoliths

In this article we report on an examination of six nutting stones from East Texas sites as well as an exploratory examination of their possible functions. “Nutting stones” have long been presumed to have been used prehistorically for crushing nuts such as hickory, etc. as foodstuffs. In fact Davis described them as being: A small flat stone, usually made of limestone, sandstone or other sedimentary types of rock which could be carried by hand. The flat surface may have one or more ground or pecked cups of various sizes, shapes and depth. It is postulated that they were used for various purposes such as cracking nuts, mixing pigments, milling herbs and seeds, or as an anvil for flint knapping. While Davis is an avocationalist and numerous professional archaeologists have dealt with nutting stones, we know of neither a more complete definition nor any other effort to empirically test for their function

Parent/Guardian eXperience: How schools can improve the Parent eXperience and how that leads to positive outcomes.

Parent/Guardian eXperience: How creating an awesome Parent/guardian experience can lead to increased parent participation, and how parent participation leads to success of the student & the overall success of the school. The goal of this presentation is to engage parents in their child’s school experience by building a genuine connection with the school and a positive parent experience

Assumptions of Qualitative Research Methods

Many characteristics make up the collective term of qualitative research, Methods used specify a certain framework in which researchers operate, Within this framework, there are two major assumptions in which I believe take precedence, Inductive reasoning and topic specificity are the two characteristics that I believe define qualitative research, Inductive reasoning is the epitome of qualitative research design. Researchers seek information out of the data that is gathered; they do not proceed to a project looking for specific findings, Maxwell (1996) states that qualitative research allows researchers to examine explanations and data - not to prove a self-fulfilling prophecy, Inductive reasoning looks for meaning from within the subjects, Researchers have historically attempted to objectify the subjective state of the their subjects, Instead, using an inductive approach, they can genuinely learn from their subjects. They are empathetic and reflective. Their job is to learn how their subjects think (Biklen & Bogdan, 1998)

Vibrational interference of Raman and high-harmonic generation pathways

Experiments have shown that the internal vibrational state of a molecule can affect the intensity of high harmonic light generated from that molecule. This paper presents a model which explains this modulation in terms of interference between different vibrational states occurring during the high harmonic process. In addition, a semiclassical model of the continuum electron propagation is developed which connects with rigorous treatments of the electron-ion scattering