نتایج جستجو برای: firefighting
تعداد نتایج: 781 فیلتر نتایج به سال:
Whirling disease is a serious problem that impacts wild and hatchery salmonid stocks across the globe. Whirling disease is caused by a microscopic parasite, Myxobolus cerebralis, with a complex life history involving both salmonid and oligochaete worm hosts. In this study, we investigated the capability of wildland firefighting foams to inactivate M. cerebralis by indirect methods. Specifically...
Firefighting is a combinatorial optimization problem on graphs that models the problem of determining the optimal strategy to contain a fire and save as much (trees, houses, etc.) from the fire as possible. We study a new version of firefighting, which we call Politician’s Firefighting and which exhibits more locality than the classical one-firefighter version. We prove that this locality allow...
One of the most common syndromes in product development is the unplanned allocation of resources to fix problems discovered late in a product's development cycle or firefighting. While it has been widely criticized in both the popular and scholarly literature, fire fighting is a common occurrence in most product development organizations. In this paper we try to answer three questions: (1) why ...
BACKGROUND Firefighters have increased risk of cardiovascular disease and of sudden death from coronary heart disease on duty while suppressing fires. This study investigated the effect of firefighting activities, using appropriate personal protective equipment (PPE), on biomarkers of cardiovascular effects in young conscripts training to become firefighters. METHODS Healthy conscripts (n = 4...
The Candidate Physical Ability Test (CPAT) is used to assess the physical fitness of firefighter candidates. The test is comprised of eight tasks which simulate real firefighting duties and demands. These tasks, whether executed during the CPAT or during a real firefighting scenario, are often performed in a cardiovascularly fatigued state. Given that cardiovascular fatigue is a large component...
Firefighting demands performing heavy muscular work under adverse and potentially dangerous conditions. Although the physiological and psychological responses to simulated firefighting activities have been described, the heat strain has not been characterised using standardised indices of exercise-heat strain. The purpose of the study is to describe the physiological and perceptual strain assoc...
The Firefighting problem is defined as follows. At time t = 0, a fire breaks out at a vertex of a graph. At each time step t > 0, a firefighter permanently defends (protects) an unburned vertex, and the fire then spread to all undefended neighbors from the vertices on fire. This process stops when the fire cannot spread anymore. The goal is to find a sequence of vertices for the firefighter tha...
Firefighting is a stressful and hazardous job. Persons engaged in firefighting are highly exposed to work-related stress as well as to smoke containing a host of chemicals potentially harmful to human health. In order to elucidate whether firefighting affects neuroendocrine and behavioral responses of firefighters, plasma catecholamine (CA) levels and the prevalence of neurobehavioral symptoms ...
The Firefighter Problem was proposed in 1995 [16] as a deterministic discrete-time model for the spread (and containment) of a fire. Its applications reach from real fires to the spreading of diseases and the containment of floods. Furthermore, it can be used to model the spread of computer viruses or viral marketing in communication networks. In this work, we study the problem from a game-theo...
Wagoner, Amy R. M.S., Purdue University, May 2014. A Sensor Ontology for the Domain of Firefighting Robots. Major Professor: Eric T. Matson. Fires create thousands of dollars in damage and thousands of deaths each year. Firefighters risk their lives everyday and are often killed in action. Firefighting robots may be able to reduce the loss of lives and damage due to fires. Robots are often used...
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