Results 261 to 270 of about 296,011 (308)

Dynamic Jump Motion Control of a Jumping Spider Robot with Redundant Degrees of Freedom

ACM Cloud and Autonomic Computing Conference, 2019
Aiming at the disadvantages of the traditional jumping robot, such as single jumping form and low movement efficiency, a hexapod robot based on jumping spider is constructed, which can realize multi-direction jumping.
Yaguang Zhu, Ziqiang Fang, Liang Zhang
semanticscholar   +1 more source

Spatial abilities in jumping spiders.

2020
Cognition refers to any state of information processing, including memory, perception, decision-making, and learning. Decision-making, the main component of this thesis, is a cognitive process that allows animals to evaluate their environment so as to avoid less favourable situations.
openaire   +2 more sources

The Jumping Mechanism of Salticid Spiders

Journal of Experimental Biology, 1959
ABSTRACT Photographs of the jumping spider Sitticus pubescens (Salticidae) show that the jump is almost entirely due to the sudden straightening of the fourth pair of legs. Multiple-image photographs show the importance of a silk drag-line in controlling the jump. The torques at the leg joints have been estimated. Extension torques occur
D. A. Parry, R. H. J. Brown
openaire   +1 more source

Crystal structure of Jumping Spider Rhodopsin-1 bound to 9-cis retinal

, 2019
Light-sensitive G protein-coupled receptors (GPCRs)-rhodopsins-absorb photons to isomerize their covalently bound retinal, triggering conformational changes that result in downstream signaling cascades.
N. Varma, Eshita Mutt, Jonas Mühle, V. Panneels, A. Terakita, X. Deupí, P. Nogly, G. Schertler, E. Lesca   +8 more
semanticscholar   +1 more source

The jumping spiders of Mozambique (Araneae: Salticidae)

Zootaxa
Only 26 species of jumping spiders have been recorded from Mozambique to date. The present study is based on materials from four museum collections. Fourteen species are described as new to science: Habrocestum mozambicum sp. nov. (♂ ♀), Hyllus bisulcus sp. nov. (♂), H. ornatus sp. nov. (♂ ♀), H. simplex sp. nov. (♂), H. tetensis sp.
CHARLES RICHARD HADDAD, KONRAD WIŚNIEWSKI, WANDA WESOŁOWSKA   +2 more
openaire   +2 more sources

Electrical parameter computation of various photovoltaic models using an enhanced jumping spider optimization with chaotic drifts

Journal of Computational Electronics, 2022
Lakshmanan Muthuramalingam, K. Chandrasekaran, Felix Joseph Xavier   +2 more
semanticscholar   +1 more source

Fine structure of the eyes of jumping spiders

Journal of Ultrastructure Research, 1971
The four pairs of eyes in two species of jumping spiders (Metaphidippus harfordi and Phidippus johnsoni) were studied by light and electron microscopy. Unique features of the anteromedial eyes, used in acute vision, are: stratification of receptors (basis of color vision?); rhabdomeres in anterior row of receptors in two planes perpendicular to each ...
R M, Eakin, J L, Brandenburger
openaire   +2 more sources

Jumping kinematics in the wandering spider Cupiennius salei

Journal of Comparative Physiology A, 2010
Spiders use hemolymph pressure to extend their legs. This mechanism should be challenged when required to rapidly generate forces during jumping, particularly in large spiders. However, effective use of leg muscles could facilitate rapid jumping. To quantify the contributions of different legs and leg joints, we investigated jumping kinematics by high ...
Tom, Weihmann, Michael, Karner, Robert J, Full, Reinhard, Blickhan   +3 more
openaire   +2 more sources

Photoreceptor projection from a four‐tiered retina to four distinct regions of the first optic ganglion in a jumping spider

The Journal of comparative neurology, 2019
Jumping spiders have four pairs of eyes (ocelli) of which only the principal eyes (PEs) are used to detect features of objects. Photoreceptors in the retina of the PEs form four layers (PL1–4) and terminate in the first optic ganglion (FOG).
T. Nagata, K. Arikawa, M. Kinoshita
semanticscholar   +1 more source

Respiration by jumping spiders (Araneae: Salticidae)

2020
Hill, David E. (2020): Respiration by jumping spiders (Araneae: Salticidae).
openaire   +1 more source