THE FIRST DAILY WEATHER MAPS FROM CHINA

Finding Structures in Weather Maps

We describe an eeective computational method for extracting structural information from spatial data sets. For instance, the structural information such as the location, shape, size, and movement about pressure cells and troughs are important for weather prediction. We are interested in extracting these structures and representing them at aggregate levels where salient geometric features are hi...

Weather and the first episode of schizophrenia.

OBJECTIVE To emphasize the effect of weather on the occurrence of the first episode of Schizophrenia. METHODS The relationship between weather and the first episode of schizophrenia was investigated at Ibn Sina Psychiatric Hospital, Damascus, Syria, from 1997 to 1999. RESULTS Schizophrenia in developing countries affects men at a higher rate than women. The highest rates are found in lower ...

The effects of weather on daily mood: a multilevel approach.

The present study examines the effects of six weather parameters (temperature, wind power, sunlight, precipitation, air pressure, and photoperiod) on mood (positive affect, negative affect, and tiredness). Data were gathered from an online diary study (N = 1,233), linked to weather station data, and analyzed by means of multilevel analysis. Multivariate and univariate analyses enabled distincti...

The effects of daily weather on accelerometer-measured physical activity.

BACKGROUND This study analyzes Chicago-area weather effects on objectively measured physical activity over a 3-year period among a cohort of 241 participants in an on-going arthritis physical activity trial. METHODS Uniaxial accelerometer counts and interview data were analyzed for up to 6 weekly study waves involving 4823 days of wear. The effects of temperature, rainfall, snowfall and dayli...

The Polygon-Ellipse Method of Data Compression of Weather Maps