Direct dynamical test for deterministic chaos

We present a direct and dynamical method to distinguish low-dimensional deterministic chaos from noise. We define a series of time-dependent curves which are closely related to the largest Lyapunov exponent. For a chaotic time series, there exists an envelope to the time-dependent curves, while for a white noise or a noise with the same power spectrum as that of a chaotic time series, the envelope cannot be defined. When a noise is added to a chaotic time series, the envelope is eventually destroyed with the increasing of the amplitude of the noise.

Experiments in the marking of seals and sea-lions

This report reviews experiments in the marking, for study purposes, of seals, sea-lions, and fur seals in the North Atlantic, North Pacific, and Antarctic regions. Also discussed are the results of studies of the northern fur seal, especially the series from 1940 to 1049 carried out by U.S. Government agents on the Pribilof Islands, Alaska. (PDF contains 38 pages)

Submission, marking and feedback process

A version of the electronic management of assessment (EMA) 'submission, marking and feedback process' map in Visio format. This format will only open in Microsoft Visio software.

Marking and feedback process

A version of the electronic management of assessment (EMA) 'marking and feedback' process map in Visio format. This format will only open in Microsoft Visio software

Submission, marking and feedback process

The submission, marking and feedback process diagram - part of our guide on Electronic management of assessment (EMA) in higher education: processes and systems