Results 51 to 60 of about 67,629 (216)

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

A New Statistical Analysis of the Morphology of Spiral Galaxies

The Astronomical Journal
Morphology is the starting point for understanding galaxies. Elmegreen et al. classified spiral galaxies into flocculent, multiple-arm, and grand-design galaxies based on the regularity of their spiral arm structure.
Junye Wei, Ye Xu, Zehao Lin, Chaojie Hao, Yingjie Li, Dejian Liu, Shuaibo Bian   +6 more
doaj   +1 more source

Discovery of a very extended X-ray halo around a quiescent spiral galaxy - the "missing link" of galaxy formation

, 2005
Hot gaseous haloes surrounding galaxies and extending well beyond the distribution of stars are a ubiquitous prediction of galaxy formation scenarios.
Benson, Andrew J., Bower, Richard G., Pedersen, Kristian, Rasmussen, Jesper, Sommer-Larsen, Jesper, Toft, Sune   +5 more
core   +1 more source

Rethinking Climate Change on the Role of Human Power Generation, Alternative Perspectives, Potential Solutions, and a Plea for Action

Chemie Ingenieur Technik, EarlyView.
All energy matters Let us broaden the discussion on solutions to climate change. Greenhouse gases have upset the delicate equilibrium of the Earth's energy balance. Consequently, all sources of heat affect the temperature of the Earth. Although the amount of additional heat generated by humans is a fraction of that produced by the sun, it is generated ...
Martin Bertau, Gerald Steiner, Tom Harwood   +2 more
wiley   +1 more source

Measuring the Spin of Spiral Galaxies

The Astrophysical Journal, 2006
We compute the angular momentum, the spin parameter and the related distribution function for Dark Matter halos hosting a spiral galaxy. We base on scaling laws, inferred from observations, that link the properties of the galaxy to those of the host halo; we further assume that the Dark Matter has the same total specific angular momentum of the baryons.
Tonini, C., Lapi, A., Shankar, F., Salucci, P.   +3 more
openaire   +4 more sources

Rectangular Spiral Galaxies are still hard

Computational Geometry, 2023
Spiral Galaxies is a pencil-and-paper puzzle played on a grid of unit squares: given a set of points called centers, the goal is to partition the grid into polyominoes such that each polyomino contains exactly one center and is 180° rotationally symmetric about its center.
Erik D. Demaine, Maarten Löffler, Christiane Schmidt 0001   +2 more
openaire   +5 more sources

Optical observations of the nearby galaxy IC342 with narrow band [SII] and Hα filters. I [PDF]

Serbian Astronomical Journal, 2013
We present observations of a portion of the nearby spiral galaxy IC342 using narrow band [SII] and Hα filters. These observations were carried out in November 2011 with the 2m RCC telescope at Rozhen National Astronomical Observatory in Bulgaria.
Vučetić M.M., Arbutina B., Urošević D., Dobardžić A., Pavlović M.Z., Pannuti T.G., Petrov N.   +6 more
doaj   +1 more source

Discovery of a Nearby Low-Surface-Brightness Spiral Galaxy [PDF]

, 1998
During the course of a search for compact, isolated gas clouds moving with anomalous velocities in or near our own Galaxy (Braun and Burton 1998 A&A, in press), we have discovered, in the data of the Leiden/Dwingeloo survey (Hartmann and Burton 1997 ...
C. G. Hoopes, Grebel E. K., Guidoni U., Karachentseva V. E., Kraan-Korteweg R. C., Lynden-Bell D., Pannekoek A., R. A. M. Walterbos, R. Braun, Sharina M. E., W. B. Burton, Zwaan M. A.   +11 more
core   +2 more sources

Story2Board: A Training‐Free Approach for Expressive Visual Storytelling

Computer Graphics Forum, EarlyView.
Abstract We present Story2Board, a training‐free framework for expressive storyboard generation from natural language. Existing methods narrowly focus on subject identity, overlooking key aspects of visual storytelling such as spatial composition, background evolution, and narrative pacing.
D. Dinkevich, M. Levy, O. Avrahami, D. Samuel, D. Lischinski   +4 more
wiley   +1 more source

Spiral Structure of Our Galaxy and of Other Galaxies [PDF]

Symposium - International Astronomical Union, 1970
Time and again Dr. B. Bok publishes his reviews on the state of optical searches of the spiral arms in our Galaxy. A great optimist at the beginning, concerning the agreement of different results, he became later more critical in his conclusions. But in his paper of 1967 he claims anew, as well established, that we can trace the spiral arms up to a ...
openaire   +1 more source