this research used a survey method to investigate wheat growers’ beliefs and perceptions regarding the use of weather information in farming decisions in fars province. a multi-stratified random sample with six strata was used to collect data. the sample consisted of 314 wheat growers divided into six strata based on their climatic zones. the data collection instrument was a questionnaire the v...

Precipitation is a very important topic in weather forecasts. Weather forecasts, especially precipitation prediction, poses complex tasks because they depend on various parameters to predict the dependent variables like temperature, humidity, wind speed and direction, which are changing from time to time and weather calculation varies with the geographical location along with its atmospheric va...

A novel method and a framework called Memory-Based Forecasting are proposed to forecast complex and timevarying natural patterns with the goal of supporting experts’ decision making. This paper targets the local precipitation phenomena captured as echo patterns in weather radar images, and aims to realize a tool that supports weather forecasters. In our framework, past image patterns similar to...

Crashing stochastic activities implies changing their distributions to reduce the mean. This can involve changing the variance too. Therefore, crashing can change not only the expected duration of a project but also the necessary size of its safety buffer. We consider optimal crashing of serial projects where the objective is to minimize total costs including crashing cost and expected delay pe...

Applications such as image processing, fluid mechanics, and weather forecasting require high computer performance. Researchers and designers in those areas are looking for solutions to multi-dimensional problems through the use of parallel computers and/or specialized hardware. It is known that in highly parallel computers communication is often the limiting execution speed bottleneck. While th...

At least 16 nutrient elements are required by plants for growth and survival, but the factors affecting element concentration and their temporal evolution are poorly understood. The objective was to investigate i) element concentration pattern in winter wheat as affected by crop developmental stage and weather, and ii) whether, in the short term, element stoichiometry reflects the type of prece...

Introduction: SARS CoV-2 pandemic has caused illness and death in millions of people worldwide. Extensive studies are being conducted on the effect of meteorological parameters on the number of patients and clinical symptoms of COVID-19. Materials and Methods: This cross-sectional descriptive study was conducted in Abarkouh city with a population of 51199 people during 215 days (from April 20,...

BACKGROUND In the last several years, the National Weather Service (NWS) has undergone a massive modernization and reorganization effort, substantially changing the organization’s structure and the technologies used to produce forecasts. When the reorganization is completed in the year 2000, the NWS will have approximately 120 local weather forecast offices throughout the country (plus Puerto R...