Search results for "project"

Can back-projection fully resolve polarity indeterminacy of independent component analysis in study of event-related potential?

2011

a b s t r a c t In the study of event-related potentials (ERPs) using independent component analysis (ICA), it is a traditional way to project the extracted ERP component back to electrodes for correcting its scaling (magnitude and polarity) indeterminacy. However, ICA tends to be locally optimized in practice, and then, the back-projection of a component estimated by the ICA can possibly not fully correct its polarity at every electrode. We demonstrate this phenomenon from the view of the theoretical analysis and numerical simulations and suggest checking and modifying the abnormal polarity of the projected component in the electrode field before further analysis. Moreover, when several co…

Online anomaly detection using dimensionality reduction techniques for HTTP log analysis

2015

Modern web services face an increasing number of new threats. Logs are collected from almost all web servers, and for this reason analyzing them is beneficial when trying to prevent intrusions. Intrusive behavior often differs from the normal web traffic. This paper proposes a framework to find abnormal behavior from these logs. We compare random projection, principal component analysis and diffusion map for anomaly detection. In addition, the framework has online capabilities. The first two methods have intuitive extensions while diffusion map uses the Nyström extension. This fast out-of-sample extension enables real-time analysis of web server traffic. The framework is demonstrated using …

Making group processes explicit to student

2014

This article considers student learning about group work in the context of project courses where student groups work under realistic expectations. Based on the literature, justice is explicated as a group work concept and regarded as a professional skill that can be practiced. Preliminary student feedback on teaching through continuous discussions on justice are presented together with teacher experiences.

Critical Analysis on the NHTSA Acceptance Criteria for In-Vehicle Electronic Devices

2014

We tested a commercial in-car navigation system prototype against the NHTSA criteria for acceptance testing of in-vehicle electronic devices, in order to see what types of in-car tasks fail the acceptance test and why. In addition, we studied the visual demands of the driving scenario recommended by NHTSA for task acceptance testing. In the light of the results, NHTSA guidelines and acceptance criteria need to be further developed. In particular visual demands of the driving scenario and for different simulators need to be standardized in order to enable fair testing and comparable test results. We suggest the visual occlusion method for finding a driving scenario that corresponds better wi…

Habituating Students to IPR Questions During Creative Project Work

2017

An Efficient Network Log Anomaly Detection System Using Random Projection Dimensionality Reduction

2014

Network traffic is increasing all the time and network services are becoming more complex and vulnerable. To protect these networks, intrusion detection systems are used. Signature-based intrusion detection cannot find previously unknown attacks, which is why anomaly detection is needed. However, many new systems are slow and complicated. We propose a log anomaly detection framework which aims to facilitate quick anomaly detection and also provide visualizations of the network traffic structure. The system preprocesses network logs into a numerical data matrix, reduces the dimensionality of this matrix using random projection and uses Mahalanobis distance to find outliers and calculate an a…

Katse kohti sukupuolta - katse kohti väkivaltaa?

2018

Are quality management practices enough to improve process innovation?

2015

The popularity of quality management as a system for continuous improvement has not been accompanied by deep theoretical understanding of its effects on process innovation. In this work, the resource-based view serves as the basis for the construction of a model designed to explain the effects of quality management practices (QMP) on process innovation performance and the mediating role of dynamic capabilities in this relationship. The empirical data were analysed using the structural equation modelling technique by examining 6 competing models that represent full, partial mediation and non-mediation relationships on a sample of 550 Spanish industrial companies. The findings indicate that t…

Employee opportunities for self-directed learning at technology organisations : features and frames of self-directed learning projects

2020

The importance of self-directed learning (SDL) in a business environment has been highlighted as a way to increase an organisation’s competitiveness and innovativeness. While organisations increasingly require SDL from employees, less attention is paid to the situations and frames enabling it. This study examines self-directed learning projects (SDLPs), situations in which SDL is realised as an individual or collective phenomenon. Based on ethnographic research, this study’s data consisted of field notes, field records and interviews. I used analysis of key incidents and ethnographic content analysis as an analytical tools. Four types of SDLPs was identified in the organisations studied: or…

Revista complutense de educación

2015

Resumen basado en el de la publicación Número Especial: TIC en Educación Existe un interés pedagógico por transformar las tecnologías de la información y comunicación en tecnologías para el aprendizaje y el conocimiento. Se presentan una serie de contribuciones didácticas asociadas al uso de blogs en la Educación Superior a partir de una experiencia de innovación educativa por proyectos llevada a cabo por un grupo de profesores universitarios entre los años 2009 y 2013. Tanto el profesorado como el alumnado participante en las asignaturas donde se ha puesto en práctica el edublog, lo verifican como un recurso útil para conformar entornos virtuales de enseñanza y aprendizaje gracias a las mú…