An R Library for Compositional Data Analysis in Archaeometry

Compositional data naturally arises from the scientific analysis of the chemical composition of archaeological material such as ceramic and glass artefacts. Data of this type can be explored using a variety of techniques, from standard multivariate methods such as principal components analysis and cluster analysis, to methods based upon the use of log-ratios. The general aim is to identify groups of chemically similar artefacts that could potentially be used to answer questions of provenance. This paper will demonstrate work in progress on the development of a documented library of methods, implemented using the statistical package R, for the analysis of compositional data. R is an open source package that makes available very powerful statistical facilities at no cost. We aim to show how, with the aid of statistical software such as R, traditional exploratory multivariate analysis can easily be used alongside, or in combination with, specialist techniques of compositional data analysis. The library has been developed from a core of basic R functionality, together with purpose-written routines arising from our own research (for example that reported at CoDaWork'03). In addition, we have included other appropriate publicly available techniques and libraries that have been implemented in R by other authors. Available functions range from standard multivariate techniques through to various approaches to log-ratio analysis and zero replacement. We also discuss and demonstrate a small selection of relatively new techniques that have hitherto been little-used in archaeometric applications involving compositional data. The application of the library to the analysis of data arising in archaeometry will be demonstrated; results from different analyses will be compared; and the utility of the various methods discussed

Hartley Library tour

Audio recording of a Hartley Library tour for the academic session 2007/2008. Voices of a nursing student and Mike Weaver, School of Nursing & Midwifery.

Biomedical Sciences Library tour

Audio recording of a tour of the Biomedical Sciences Library at the Boldrewood Campus for the academic session 2007-2008. Voices of 2 students from the School of Biological Sciences.

Health Services Library tour

Audio recording of a Library tour for University of Southampton Health Services Library located at Southampton General Hospital. Voices of members of Library staff used including Ric Paul. Prepared for the academic session 2007-2008.

Hartley Library tour

This an audio version of an introductory tour of the Hartley Library for the academic session 2007/2008. A transcript of the recording is also provided.

JQuery: A JavaScript Library

JQuery is a JavaScript library that encourages the separation of content, behavior and presentation.

Library Guide: Searching Databases - Hints & Tips

Detailed guide to searching bibliographic databases for journal articles. This is a generic guide, useful for any subject.

Library Guide: improving your search & Search Planner

A search planner to help structure a search (for journal articles in bibliographic databases). Also includes hints and tips on improving your search. This is a generic guide, useful for any subject.

The Tyne Digital Library - Part 4 Datasets

This part contains geomorphological, hydrological and other information concerning the desktop research of the River Tyne catchment area.

The Tyne Digital Library - Part 3 Bibliography

This section consists of a comprehensive collection of bibliographic information covering five important themes to help you with the desktop research of the River Tyne catchment area.

The Tyne Digital Library - Part 2 Maps and Images

In this section, you will find maps showing various important aspects of the River Tyne catchment area. All the maps are drawn based on Ordnance Survey data made available via the Digimap service. For the land cover maps of the catchment area, four variants are provided. Please note that the full details of the intext citations quoted in some of the following maps can be found in the full bibliographic listing.

The Tyne Digital Library - Part 1 Introduction

The Tyne Digital Library (TDL) provides access to scholarly materials (e.g. papers, book chapters, bibliographic reference lists), databases of hydrological and physical information, maps of key physiographic and environmental data, and electronic journal articles, for students undertaking GEOG3023 River Basin Management. In addition, the TDL utilises technological innovations that enhance services for accessing this information.

Collection of the Tyne Digital Library

The Tyne Digital Library (TDL) provides access to scholarly materials (e.g. papers, book chapters, bibliographic reference lists), databases of hydrological and physical information, maps of key physiographic and environmental data, and electronic journal articles, for students undertaking GEOG3023 River Basin Management. In addition, the TDL utilises technological innovations that enhance services for accessing this information.

La influencia del marketing político en el electorado estadounidense. Un análisis a las elecciones presidenciales del 2004 : George Walker Bush Vs John Forbes Kerry

Este estudio de caso, pretende analizar el uso de las herramientas de marketing político, desde las elecciones primarias hasta la elección presidencial en el 2004 en Estados Unidos, en la que George W. Bush del Partido Republicano busca la reelección frente a su rival John F. Kerry del Partido Demócrata.