Search results for "fall"

Source shape and data analysis procedure effects on hydraulic conductivity of a sandy-loam soil determined by ponding infiltration runs

2017

Performing ponding infiltration runs with non-circular sources could represent a good means to sample completely an area of interest. Regardless of the shape of the source, predicting the expected reliability of the collected data by infiltrometers should facilitate soil hydraulic characterisation and also allow a more conscious use of the field data. The influence of the shape of the infiltration source (i.e., circular or square) and the analysis procedure of the steady-state infiltration data on the saturated hydraulic conductivity, Ks, of a sandy-loam soil was tested in this investigation. Circular and square surfaces sampled with the pressure infiltrometer (PI) yielded similar estimates…

Overestimation of the strength of size-assortative pairing in taxa with cryptic diversity: a case of Simpson's paradox.

2015

5 pages; International audience; Size-assortative pairing is one of the most common pairing patterns observed in nature and it probably occurs in many taxa with cryptic diversity. Observed patterns of size-assortative pairing in natural populations may thus be influenced by the co-occurrence of noninterbreeding cryptic groups of individuals living in sympatry. To quantify this potential bias, we sampled amphipods from the Gammarus pulex/Gammarus fossarum crustacean species complex in rivers containing two sympatric and morphologically cryptic groups, i.e. molecular operational taxonomic units (MOTUs). Within each river, MOTUs did not interbreed and differed in mean body size. We measured th…

Esplicasio de la falla de la Ballá de San Francés : añ 1899.

Dades preses de la coberta

Gran falla en lo carrer de Borrull : añ 1890.

Dades preses de la coberta

Catalina la Torera, Casimiro el seu marit y un empleat en consumos de la dóna molt amic : falla del carrer de Grasia als cuatre cantons de la Llanter…

Dades preses de la coberta

Falla del carrer de La Chordana : añ 1887.

Dades preses de la coberta

Intercepting real and simulated falling objects: what is the difference?

2009

International audience; The use of virtual reality is nowadays common in many studies in the field of human perception and movement control, particularly in interceptive actions. However, the ecological validity of the simulation is often taken for granted without having been formally established. If participants were to perceive the real situation and its virtual equivalent in a different fashion, the generalization of the results obtained in virtual reality to real life would be highly questionable. We tested the ecological validity of virtual reality in this context by comparing the timing of interceptive actions based upon actually falling objects and their simulated counterparts. The r…

Relasió y explicasió de la falla dels carrers del Pilar y Sequiola : any 1908.

Dades preses de la coberta

Gran falla organisá per Chusep Torres : añ 1904.

Dades preses de la coberta

Relasió y esplicasió de tot lo que conté la falla del carrer de Pelayo : añ 1906.