Spatial-then-Temporal Self-Supervised Learning for Video Correspondence

Learning temporal correspondence from unlabeled videos is of vital importance in computer vision, and has been tackled by different kinds of self-supervised pretext tasks. For the self-supervised learning, recent studies suggest using large-scale video datasets despite the training cost. We propose a spatial-then-temporal pretext task to address the training data cost problem. The task consists of two steps. First, we use contrastive learning from unlabeled still image data to obtain appearance-sensitive features. Then we switch to unlabeled video data and learn motion-sensitive features by reconstructing frames. In the second step, we propose a global correlation distillation loss to retain the appearance sensitivity learned in the first step, as well as a local correlation distillation loss in a pyramid structure to combat temporal discontinuity. Experimental results demonstrate that our method surpasses the state-of-the-art self-supervised methods on a series of correspondence-based tasks. The conducted ablation studies verify the effectiveness of the proposed two-step task and loss functions

Evaluation of the Welsh School-based Counselling Strategy : Final Report

The Welsh Government's School-based Counselling Strategy (the Strategy), implemented from April 2008 in secondary schools across Wales and a pilot selection of primary schools, was evaluated. A range of research tools were used, including desk research, analysis of client outcomes, qualitative interviews and surveys of key stakeholders' views. Implementation of the Strategy and its counselling services was generally perceived as successful by all stakeholders, including counselling clients, with evidence that all key recommendations for its development were implemented. Across six terms, 11,043 episodes of counselling were attended. Participation in counselling was associated with large reductions in psychological distress; with levels of improvement that, on average, were somewhat greater than those found in previous evaluations of UK school-based counselling. Key recommendations are that permanent funding mechanisms should be established to embed counselling in the Welsh secondary school sector, with consideration given to its roll-out into primary schools. Service managers and schools should also look to ensuring equal opportunities of participation in school-based counselling from all sectors of the community, that adequate accommodation is available in schools for the delivery of counselling, and that a system of regular outcome monitoring is established

A Gender Perspective on Water Resources and Sanitation

In most cultures, women are primarily responsible for the use and management of water resources, sanitation, and health at the household level. Women and girls walk many hours fetching and carrying back water whereas men do not

Collecting Data from Children Ages 9-13

Provides a summary of literature on common methods used to collect data, such as diaries, interviews, observational methods, and surveys. Analyzes age group-specific considerations, advantages, and drawbacks, with tips for improving data quality