Results 141 to 150 of about 33,778 (318)
Missouri Botanical Garden's cycad collection: A journey through time
Plant Species Biology, EarlyView.This article summarizes the history of the Missouri Botanical Garden's extensive cycad collection. Some of the specimens currently housed in the living collections date back well over 100 years. Cycads continue to face a myriad of threats in the wild, and their conservation in ex situ collections is of critical importance to assist in their survival ...
Benjamin E. Deloso +3 more
wiley +1 more source
Smooth and Energy Saving Gait Planning for Humanoid Robot Using Geodesics
Applied Bionics and Biomechanics, 2012 A novel gait planning method using geodesics for humanoid robot is given in this paper. Both the linear inverted pendulum model and the exact Single Support Phase (SSP) are studied in our energy optimal gait planning based on geodesics.
Liandong Zhang, Changjiu Zhou
doaj +1 more source
Isometries of spaces of convex compact subsets of CAT(0)-spaces [PDF]
arXiv, 2004 In the present paper we characterize the surjective isometries of the space of compact, convex subsets of proper, geodesically complete CAT(0)-spaces in which geodesics do not split, endowed with the Hausdorff metric. Moreover, an analogue characterization of the surjective isometries of the space of compact subsets of a proper, uniquely geodesic ...
arxiv
Constituency references in social media: MPs' usage and voters' reaction
European Journal of Political Research, EarlyView.Abstract Social media platforms offer MPs the opportunity to directly signal attention to their local voters in the constituency. And while previous research has linked the strategic use of such local cues in social media posts to electoral motives, we know very little about their effectiveness.
OLIVER HUWYLER +4 more
wiley +1 more source
Geodesics on an invariant surface [PDF]
arXiv, 2009 We study the geodesics on an invariant surface of a three dimensional Riemannian manifold. The main results are: the characterization of geodesic orbits; a Clairaut's relation and its geometric interpretation in some remarkable three dimensional spaces; the local description of the geodesics; the explicit description of geodesic curves on an invariant ...
arxiv
Recurrent Geodesics on Any Closed Orientable Surface of Genus One [PDF]
, 1932 Gustav A. Hedlund
openalex +1 more source
Integrative Zoology, EarlyView.This research reveals the gut microbiota‐mediated severe foraging environment adaptation of wild small ruminants in the Three‐River‐Source National Park. Unlike Tibetan sheep (TS), blue sheep (PN and Tibetan antelope (TA) often grazed low‐quality herbage in a wildness environment, and the higher microbial diversity and resilient network characteristics
Hongjin LIU +11 more
wiley +1 more source
"Corrigendum: Dense array EEG source estimation in neocortical epilepsy."
Frontiers in Neurology, 2013 Madoka eYamazaki +6 more
doaj +1 more source
Compact Riemannian Manifolds with Homogeneous Geodesics
Symmetry, Integrability and Geometry: Methods and Applications, 2009 A homogeneous Riemannian space (M = G/H,g) is called a geodesic orbit space (shortly, GO-space) if any geodesic is an orbit of one-parameter subgroup of the isometry group G. We study the structure of compact GO-spaces and give some sufficient conditions
Dmitrii V. Alekseevsky +1 more
doaj +1 more source