Results 31 to 40 of about 4,624,942 (322)

The chemical evolution of Omega Centauri's progenitor system [PDF]

, 2007
Chemical evolution models are presented for the anomalous globular cluster Omega Centauri. After demonstrating that the chemical features of Omega Cen can not be reproduced in the framework of the closed-box self-enrichment scenario, we discuss a model ...
Antonio Sollima, Bedin, Bekki, Bekki, Bradamante, Brown, Carraro, Chabrier, Chuzhoy, Cohen, Cohen, Cunha, Dinescu, Dinescu, Donatella Romano, Elena Pancino, Fellhauer, Ferraro, Ferraro, Ferraro, Francesca Matteucci, Francesco R. Ferraro, François, François, Freeman, Freeman, Frinchaboy, Gnedin, Gratton, Gratton, Grevesse, Harbeck, Harris, Hilker, Hilker, Hirschi, Hughes, Icke, Ideta, Ikuta, Iwamoto, Kayser, Koch, Kroupa, Lanfranchi, Lanfranchi, Lee, Lee, Lloyd Evans, Maeder, Majewski, Mallia, Mannucci, Marco Limongi, Mateo, Matteucci, Matteucci, Matteucci, McWilliam, Merritt, Meylan, Meynet, Meynet, Meza, Michele Bellazzini, Moehler, Monica Tosi, Nomoto, Norris, Norris, Norris, Norris, Origlia, Pancino, Pancino, Pancino, Piotto, Platais, Recchi, Rey, Richer, Romano, Romano, Salpeter, Scalo, Schmidt, Smith, Smith, Smith, Sollima, Sollima, Sollima, Sollima, Stanford, Suntzeff, Talbot, Tinsley, Tolstoy, Tsuchiya, Tsujimoto, van de Ven, van den Hoek, Vanture, Woolley, Woosley, Wyse, Zinnecker   +106 more
core   +3 more sources

Origin of symbol-using systems: speech, but not sign, without the semantic urge [PDF]

, 2014
Natural language—spoken and signed—is a multichannel phenomenon, involving facial and body expression, and voice and visual intonation that is often used in the service of a social urge to communicate meaning.
Alberts B, Baldwin JM, Darwin C, Darwin C, Deacon TW, Donald M, Fauconnier G, Gross CG, Hauser M, Jablonski NG, Jackendoff R, Judson HF, Kendon A, King BJ, Klima ES, Knight C, Langacker R, Martin I. Sereno, Merker B, Miller SL, Mithen S, Rubens AB, Sereno MI, Sereno MI, Sereno ML, Wills C, Woese CR, Yip M   +27 more
core   +2 more sources

The evolution of a selection system

Naval Research Logistics, 1995
Summary: The article is a case study. It describes the initialization and subsequent modifications of the selection process used for the annual Award for Excellence in Teaching at the Naval Postgraduate School (NPS). The method treats highly unbalanced data and utilizes some exploratory data analysis techniques in interesting ways.
openaire   +3 more sources

Non-perturbative treatment of non-Markovian dynamics of open quantum systems [PDF]

, 2018
We identify the conditions that guarantee equivalence of the reduced dynamics of an open quantum system (OQS) for two different types of environments - one a continuous bosonic environment leading to a unitary system-environment evolution and the other a
Huelga, Susana F., Plenio, Martin B., Smirne, Andrea, Tamascelli, Dario   +3 more
core   +2 more sources

The Evolution of Complex Systems

Zeitschrift für Naturforschung A, 1988
Abstract A principle of evolution of highly complex systems is proposed. It is based on extremal properties of the information I (X, Y) characterizing two states X and Y with respect to each other, I(X, Y) = H(Y) -H(Y/X), where H(Y) is the entropy of state Y,H (Y/X) the entropy in state Y given the ...
Hofacker, G. L., Levine, R. D.
openaire   +1 more source

Orbital Maneuvering system design evolution [PDF]

, 1985
Preliminary design considerations and changes made in the baseline space shuttle orbital maneuvering system (OMS) to reduce cost and weight are detailed.
Gibson, C., Humphries, C.
core   +1 more source

Planetary nebula progenitors that swallow binary systems

, 2015
I propose that some irregular `messy' planetary nebulae owe their morphologies to triple-stellar evolution where tight binary systems evolve inside and/or on the outskirts the envelope of asymptotic giant branch (AGB) stars.
Soker, Noam
core   +1 more source

Evolution of triage systems [PDF]

Emergency Medicine Journal, 2006
The French word "trier", the origin of the word "triage", was originally applied to a process of sorting, probably around 1792, by Baron Dominique Jean Larrey, Surgeon in Chief to Napoleon's Imperial Guard. Larrey was credited with designing a flying ambulance: the Ambulance Volante.
openaire   +2 more sources

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

Characterization and genomic analysis of a novel lytic phage vB_PstM_ZRG1 infecting Stutzerimonas stutzeri, representing a new viral genus, Elithevirus

Virus Research, 2023
Stutzerimonas stutzeri is an opportunistic pathogen widely distributed in the environment and displays diverse metabolic capabilities. In this study, a novel lytic S.
Ying Chen, Ruizhe Guo, Yantao Liang, Lin Luo, Ying Han, Hongmin Wang, Hong Zhang, Yundan Liu, Kaiyang Zheng, Hongbing Shao, Yeong Yik Sung, Wen Jye Mok, Li Lian Wong, Andrew McMinn, Min Wang   +14 more
doaj   +1 more source