Responses of the mosquitoes Aedes aegypti, Culex quinquefasciatus, and Culex nigripalpus to volatiles and compounds associated with bovine and avian blood that were presented in collagen membranes were evaluated in olfactometer and landing assays. The presence of attractants produced by blood was supported by more attraction of all species to blood than water controls in the olfactometer. Femal...

The paper presents the automatic control of aircraft in longitudinal plane, during landing, by using the linearized dynamics of aircraft, taking into consideration the sensor errors and other external disturbances. Aircraft auto-landing is achieved by combining two control techniques: H2 and H∞ approaches; this way, a robust H2/H∞ controller is obtained. Within the robust H2/H∞ controller, the ...

The atmospheric disturbances affect not only flying qualities of an airplane but also flight safety. According to flight records, most aircraft accidents occurred during final approach or landing. If the flight conditions are beyond the preset envelope, the automatic landing system (ALS) is disabled and the pilot takes over. An inexperienced pilot may not be able to guide the aircraft to a safe...

Synopsis Anything that jumps must land, but unlike during jumping when muscles produce energy to accelerate the body into the air, controlled landing requires muscles to dissipate energy and decelerate the body. Among anurans, toads (genus Bufo) exhibit highly coordinated landing behaviors, using their forelimbs to stabilize the body after touch-down as they lower their hindlimbs to the ground....

Random errors are omnipresent in sensorimotor tasks due to perceptual and motor noise. The question is, are humans aware of their random errors on an instance-by-instance basis? The appealing answer would be 'no' because it seems intuitive that humans would otherwise immediately correct for the errors online, thereby increasing sensorimotor precision. However, here we show the opposite. Partici...

Just over three hundred years ago, William of Orange seized the British crown for himself and his wife Mary Stuart from his uncle and father-in-law, James II. In a virtually bloodless take-over, William's coup placed firm Protestants on a throne that had been occupied by a Catholic monarch ruling in an increasingly autocratic manner without Parliament and in contempt of the Established Church-a...

During 1914 and 1915 a considerable number of naval ratings and marines were landed in the West African Expeditionary Force in the Cameroons, and many of them contracted fever, which manifested itself during their shore service or after re-embarking. It was very noticeable in the cases we had the opportunity of observing that marked debility and cachexia was produced. This was doubtless due in ...

This paper analyzes the relative performance of two market-based fisheries management instruments in the presence of a stochastic stock-recruitment relation. Regulators are forced to choose either a fee per fish landed or a quota on the total fish harvest at a time when they are uncertain what will be the stock of fish recruits that will actually materialize during the next fishing period. With...

Patellar tendinopathy (jumper's knee) is a common injury in sports that comprise jump actions. This article systematically reviews the literature examining the relation between patellar tendinopathy and take-off and landing kinematics in order to uncover risk factors and potential prevention strategies. A systematic search of the Pubmed, Embase and Amed databases was performed to identify studi...