in this paper, a model based on gmdh type neural network, is used to predict gas price in the spot market while using oil spot market price, gas spot market price, gas future market price, oil future market price and average temperature of the weather. the results suggest that gmdh neural network model, according to the root mean squared error (rmse) and direction statistics (dstat) statistics ...

This research aims to highlight the link between weather conditions and road accident risk at an aggregate level and on a monthly basis, in order to improve road safety monitoring at a national level. It is based on some case studies carried out in Work Package 7 on "Data analysis and synthesis" of the EU-FP6 project "SafetyNet-Building the European Road Safety Observatory", which illustrate th...

Habitual physical activity is an important determinant of health, yet many people are considered to be inactive. Identification of the obstacles to greater participation is necessary for the development of strategies to overcome those obstacles. The weather has been identified as a perceived barrier to participation in physical activity, but exactly which adverse weather conditions are most imp...

As the energy use by commercial buildings continues to grow, there is a need to develop innovative techniques to reduce and optimize energy use in buildings. In recent years, Building Energy Management Systems (BEMS) have gained popularity because of increasing interest in building energy conservation and savings. However, most of the current BEMS are limited to the functions of collecting and ...

INTRODUCTION Provision for the safety and health care of persons attending mass-gathering events presents unique challenges to organizers. This study was designed to determine the factors that contribute to patients seeking medical care during these events. METHODS We performed a retrospective review of patient care records for visits that occurred during race weekends at the Kansas Speedway ...

BACKGROUND It is known that a wide variety of factors exacerbate asthma; however, few studies have investigated the factors that exacerbate asthma from a patient's perspective. The aim of this study was to analyze the factors that exacerbate asthma, based on a questionnaire completed by asthma patients in Niigata Prefecture. METHODS Based on questionnaires given to 3085 patients who visited t...

Acute aortic dissection (AAD) is the third main driver of the out-of-hospital immediate death (Manfredini et al., 2008). Despite the state-of-the-art therapeutic and diagnostic methods, AAD develops hastily with often fatal consequences. Although the AAD was first reported more than two centuries ago there is still less knowledge about the origins and causes of it (Hagan et al., 2000). Environm...