134 research outputs found
Cognitive bias in healthy participants with symptoms of depression or seasonal affective disorder
No full text
Standardizing DIRAC’s Cloud Interfaces
No full textDIRAC is a widely used framework for distributed computing. It provides a layer between users and computing resources by offering a common interface to a number of heterogeneous resource providers. In these proceedings we describe a new implementation of the DIRAC to Cloud interface
Backfilling a cloud with grid jobs
No full textImperial College London hosts a large Tier-2 WLCG grid site based around a HTCondor batch system; additionally it provides cloud computing facilities using OpenStack to non-WLCG activities. These cloud resources are open to opportunistic usage provided the impact on the primary cloud users remains low.
In common with most Tier-2 sites we see constant job pressure from the WLCG VOs, while the usage of our cloud is much more intermittent. To allocate grid jobs to the available opportunistic cloud resources we implemented a lightweight backfill system based on the OpenStack Python API
Backfilling a cloud with grid jobs
No full textImperial College London hosts a large Tier-2 WLCG grid site based around a HTCondor batch system; additionally it provides cloud computing facilities using OpenStack to non-WLCG activities. These cloud resources are open to opportunistic usage provided the impact on the primary cloud users remains low.
In common with most Tier-2 sites we see constant job pressure from the WLCG VOs, while the usage of our cloud is much more intermittent. To allocate grid jobs to the available opportunistic cloud resources we implemented a lightweight backfill system based on the OpenStack Python API
Genotyping of Cryptosporidium spp. isolated from human stool samples in Switzerland
No full textIn a study to estimate the frequency of Cryptosporidium infections in Switzerland, stool samples from patients found to be positive for Cryptosporidium spp. by modified Ziehl-Neelson staining and fluorescence microscopy were used for genotyping experiments. With 9 of 12 samples, DNA extraction and subsequent genotyping was successful. All Cryptosporidium-isolates belonged to the bovine genotype. In one stool sample, two strains of Cryptosporidium were demonstrated, suggesting a mixed infection. In comparison with reference strains from calves, one of the isolates showed a full sequence identity and the other a similarity of 97.5%. The fact that only bovine genotypes were detected suggests, that cryptosporidiosis must primarily be considered as a zoonotic disease in Switzerland. This is in contrast to other countries, where the human genotype of C. parvum was shown to dominate the epidemiological situation. The results of our study are supported by the previous finding, that two of the analysed strains originated from patients who used to consume raw milk or raw cream, a known risk factor for cryptosporidiosis
Improved Pilot Logging in DIRAC
No full textDIRAC is a widely used framework for distributed computing. It works by building a layer between the users and the resources offering a common interface to a number of heterogeneous providers. DIRAC, like many other workload management systems, uses pilot jobs to check and configure the worker-node environment before fetching a user payload. The log messages generated by these pilot jobs are crucial for diagnosing problems in the infrastructure. In these proceedings we present a configurable, resource independent remote pilot logging system
Um infinito para descansar – a poesia de Inez Andrade Paes
No full textThe purpose of this article is, through the analysis of poems by Inez Andrade Paes, to briefly present the author and her work, in order to awaken, among the readers of this magazine, the interest in reading and researching this contemporary author.El objetivo de este artículo es, a través del análisis de poemas de Inez Andrade Paes, presentar brevemente a la autora y su obra, a fin de despertar, entre los lectores de esta revista, el interés por la lectura y por la investigación de esta autora contemporánea.O objetivo deste artigo é, por meio da análise de poemas de Inez Andrade Paes, apresentar, brevemente, a autora e sua obra, a fim de despertar, entre os leitores desta revista, o interesse pela leitura e pela pesquisa dessa autora contemporânea
Data management for the SoLid experiment
No full textThe SoLid experiment is a short-baseline neutrino project located at the BR2 research reactor in Mol, Belgium. It started data taking in November 2017. Data management, including long term storage will be handled in
close collaboration by Vrije Universiteit Brussels, Imperial College London and Rutherford Appleton Laboratory. We describe the SoLid data management model with an emphasis on the software developed for the file distribution on the Grid, the data archiving and the initial data transfer from the experiment to a Grid storage element. We present results from the first six months of data taking, showing how the system performed in a production setting
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