PReServ: Provenance Recording for Services

The importance of understanding the process by which a result was generated in an experiment is fundamental to science. Without such information, other scientists cannot replicate, validate, or duplicate an experiment. We define provenance as the process that led to a result. With large scale in-silico experiments, it becomes increasingly difficult for scientists to record process documentation that can be used to retrieve the provenance of a result. Provenance Recording for Services (PReServ) is a software package that allows developers to integrate process documentation recording into their applications. PReServ has been used by several applications and its performance has been benchmarked

Architecture for Provenance Systems

This document covers the logical and process architectures of provenance systems. The logical architecture identifies key roles and their interactions, whereas the process architecture discusses distribution and security. A fundamental aspect of our presentation is its technology-independent nature, which makes it reusable: the principles that are exposed in this document may be applied to different technologies

The Intergenerational Transmission of Employers in Canada and Denmark

The intergenerational transmission of employers between fathers and sons is a common feature of labour markets in Canada and Denmark, with 30 to 40% of young adults having at some point been employed with a firm that also employed their fathers. This is strongly associated with the first jobs obtained during the teen years, but for four to about six percent it also refers to the main job in adulthood. In both countries the transmission of employers is positively associated with paternal earnings, rising distinctly and sharply at the very top of the father's earnings distribution, and has implications for the intergenerational transmission of earnings. Mobility out of the bottom has little to do with inheriting an employer from the father, while the preservation of high income status is distinctly related to this tendency. These findings stress that child adult outcomes are related to the structure of labour markets, and underscore the role of resources parents have – though information, networks, or direct control of the hiring process – in facilitating the job search of their children.intergenerational mobility, job search, equality of opportunity

From the Cripple-Power-Festival to Independence Days: Disability Culture in Germany

The German cripple-power-festival is an initiative which promotes disability culture in Germany. The fourth festival of this kind took place in September 2003 as a part of the European Year of Disabled People. Ottmar Miles-Paul, a free-lance journalist based in Kassel, Germany provides insight about this initiative and the changes disability culture is making in the area of general disability politics in Germany

Setup for Auto Generation of File URLS Using Google Drive for Batch Load to Digital Commons

Prepare a batch file uploads to Digital Commons repositories by using auto generated URLs that are copied into batch load spreadsheets. The URLS are generated by posting files in publicly accessable GoogleDrive folders, and by running a script in GoogleSheets. Please see Strauss and Miles Automating Workflow: From a Trickle to a Stream http://engagedscholarship.csuohio.edu/msl_facpub/105/ These instructions and files have been compiled based on the work of a number of contributors through the Digital Commons Network but largely by Strauss & Miles. These instructions are posted with the intent to freely sha

An Architecture for Provenance Systems

This document covers the logical and process architectures of provenance systems. The logical architecture identifies key roles and their interactions, whereas the process architecture discusses distribution and security. A fundamental aspect of our presentation is its technology-independent nature, which makes it reusable: the principles that are exposed in this document may be applied to different technologies

Rapid thermal processing of CuAISe2

CuAl thin film metallic precursors were selenised using a tube furnace or a rapid thermal processor (RTP). A comparison is made between the two processes for slightly Cu rich films and best crystallographic and elemental properties are obtained for films selenised by RTP: it was found that ternary compound could only be formed using the RTP. In both cases a large amount of CuxSey grains are found to develop at the surface of the films. Only samples processed in the RTP showed cathodoluminscence excitation at 2.68 eV characteristics of the electronic bandgap. Al rich samples were used to study the effect of etching the CuxSey phases from the surface in order to reveal the underlying CuAlSe2 material

Provenance-based validation of E-science experiments

E-Science experiments typically involve many distributed services maintained by different organisations. After an experiment has been executed, it is useful for a scientist to verify that the execution was performed correctly or is compatible with some existing experimental criteria or standards. Scientists may also want to review and verify experiments performed by their colleagues. There are no existing frameworks for validating such experiments in today's e-Science systems. Users therefore have to rely on error checking performed by the services, or adopt other ad hoc methods. This paper introduces a platform-independent framework for validating workflow executions. The validation relies on reasoning over the documented provenance of experiment results and semantic descriptions of services advertised in a registry. This validation process ensures experiments are performed correctly, and thus results generated are meaningful. The framework is tested in a bioinformatics application that performs protein compressibility analysis

Setup for Auto Generation of File URLS Using Google Drive for Batch Load to Digital Commons

Prepare a batch file uploads to Digital Commons repositories by using auto generated URLs that are copied into batch load spreadsheets. The URLS are generated by posting files in publicly accessable GoogleDrive folders, and by running a script in GoogleSheets. Please see Strauss and Miles Automating Workflow: From a Trickle to a Stream http://engagedscholarship.csuohio.edu/msl_facpub/105/ These instructions and files have been compiled based on the work of a number of contributors through the Digital Commons Network but largely by Strauss & Miles. These instructions are posted with the intent to freely share