Results 21 to 30 of about 1,399,859 (221)

Random Triangle Theory with Geometry and Applications

, 2015
What is the probability that a random triangle is acute? We explore this old question from a modern viewpoint, taking into account linear algebra, shape theory, numerical analysis, random matrix theory, the Hopf fibration, and much much more.
Edelman, Alan, Strang, Gilbert
core   +1 more source

The fully connected N-dimensional skeleton: probing the evolution of the cosmic web [PDF]

, 2008
A method to compute the full hierarchy of the critical subsets of a density field is presented. It is based on a watershed technique and uses a probability propagation scheme to improve the quality of the segmentation by circumventing the discreteness of
Adelman-McCarthy, Alcock, Aracil, Aragón-Calvo, Aragón-Calvo, Aubert, Aubert, Barrow, Bertschinger, Beucher, Bharadwaj, Bond, Bond, C. Pichon, Caucci, Colberg, Coles, Colombi, de Lapparent, El-Ad, Gottloeber, Graham, Górski, Hahn, Hanami, Harker, Hatton, Hoffman, Huchra, Icke, Jost, Kirshner, Kofman, Lacey, Martinez, Merritt, Milnor, Navarro, Neyrinck, Neyrinck, Novikov, Ocvirk, Peebles, Peebles, Pichon, Platen, Prunet, Roerdink, S. Colombi, Sahni, Sathyaprakash, Sheth, Sousbie, Sousbie, Springel, Springel, Stoica, T. Sousbie, Wang, Zel'Dovich   +59 more
core   +2 more sources

A jump start to open innovation: A multidimensional competence profile in an international setting

Entrepreneurial Business and Economics Review
Objective: This study investigates open innovation (OI) competence development through a dynamic capabilities lens, offering a systematic understanding of how OI competencies are distributed across higher education contexts in mature and post-transition
Marita McPhillips, Silke Tegtmeier, Tatjana Nikitina   +2 more
doaj   +1 more source

Collective synchronization in spatially extended systems of coupled oscillators with random frequencies

, 2004
We study collective behavior of locally coupled limit-cycle oscillators with random intrinsic frequencies, spatially extended over $d$-dimensional hypercubic lattices.
A. Pikovsky, A. T. Winfree, C. Herring, G. B. Ermentrout, H. Hong, Hyunggyu Park, M. Y. Choi, R. L. Burden, Y. Kuramoto, Y. Kuramoto   +9 more
core   +1 more source

Jammed lattice sphere packings

, 2013
We generate and study an ensemble of isostatic jammed hard-sphere lattices. These lattices are obtained by compression of a periodic system with an adaptive unit cell containing a single sphere until the point of mechanical stability. We present detailed
Kallus, Yoav, Marcotte, Étienne, Torquato, Salvatore   +2 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

The Solution Cosmological Constant Problem [PDF]

, 2019
The cosmological constant problem arises because the magnitude of vacuum energy density predicted by the Quantum Field Theory is about 120 orders of magnitude larger then the value implied by cosmological observations of accelerating
Foukzon, Jaykov
core  

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Velocity field distributions due to ideal line vortices [PDF]

, 2001
We evaluate numerically the velocity field distributions produced by a bounded, two-dimensional fluid model consisting of a collection of parallel ideal line vortices. We sample at many spatial points inside a rigid circular boundary.
A. C. Ting, A. Vincent, B. N. Kuvshinov, B. N. Kuvshinov, C. C. Lin, D. Montgomery, D. Montgomery, D. Montgomery, D. Montgomery, David C. Montgomery, G. R. Joyce, J. B. Taylor, J. Jimenez, K. V. Chukbar, L. J. Campbell, L. Onsager, M. K. H. Kiessling, S. Chandrasekhar, Thomas S. Levi, W. H. Matthaeus, Y. B. Pointin   +20 more
core   +3 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source