Results 11 to 20 of about 610,618 (230)
Sociedade de risco e risco epidemiológico [PDF]
A discussão sobre a concepção de risco é ampla e permeia desde uma perspectiva mais geral, que busca contextualizá-lo na dinâmica da mudança da sociedade, até a abordagem mais específica na área da saúde, particularmente nos estudos associativos da epidemiologia.
Luiz, Olinda do Carmo, Cohn, Amélia
openaire +3 more sources
Gullies are the most energy-efficient way to transport excess runoff from the watershed after a landscape disturbance. The diversity of physical factors that are associated with gully formation makes straightforward interpretation difficult and requires ...
B. Martins +3 more
doaj +1 more source
A cidade de Maceió, capital de Alagoas, tem sido palco de um êxodo intraurbano em meio à pandemia do novo coronavírus. A atividade de mineração de sal-gema, por mais de quarenta anos, levou à desestabilização do solo, provocando rachaduras em imóveis e vias localizados nas superfícies dos poços de extração, que foram evidenciadas a partir de 2018 ...
Caroline Gonçalves dos Santos +1 more
openaire +3 more sources
Looking for Simple Common Schemes to Design Recognizer P Systems with Active Membranes That Solve Numerical Decision Problems [PDF]
Earlier solutions to decision problems by means of P systems used many counter objects to control the synchronization of different stages in a computation (usually as many counters as the stage must last in the worst case).
Graciani Díaz, Carmen +1 more
core +1 more source
A New Strategy to Improve the Performance of PDP-Systems Simulators [PDF]
One of the major challenges that current P systems simulators have to deal with is to be as efficient as possible. A P system is syntactically described as a membrane structure delimiting regions where multisets of objects evolve by means of evolution
Graciani Díaz, Carmen +2 more
core +1 more source
Computing Partial Recursive Functions by Virus Machines [PDF]
Virus Machines are a computational paradigm inspired by the manner in which viruses replicate and transmit from one host cell to another. This paradigm provides non-deterministic sequential devices.
Pérez Jiménez, Mario de Jesús +3 more
core +1 more source
Membrane division, restricted membrane creation and object complexity in P systems [PDF]
We improve, by using register machines, some existing universality results for specific models of P systems. P systems with membrane creation are known to generate all recursively enumerable sets of vectors of non-negative integers, even when no region
Alhazov, Artiom +2 more
core +1 more source
P Systems with Tables of Rules [PDF]
In the last time, several e®orts were made in order to remove the polarization of membranes from P systems with active membranes; the present paper is a contribution in this respect.
Paun, Gheorghe +2 more
core +1 more source
As vagas de incêndios florestais de 2017 em Portugal continental, premissas de uma quarta ‘geração’?
A evolução dos incêndios em Portugal continental, ao longo dos últimos cinquenta anos, não tem sido constante, o que permite, combinando diferentes parâmetros estatísticos, estabelecer diferentes “gerações” de incêndios.
Fernando Félix, Luciano Lourenço
doaj +1 more source
Graciosa is a mid-Pleistocene to Holocene volcanic island that lies in a complex plate boundary between the North American, Eurasian, and Nubian plates. Large fault scarps displace the oldest (Middle Pleistocene) volcanic units, but in the younger areas ...
Ana Hipólito +3 more
doaj +1 more source

