The 22 July 2020 M 7.8 Shumagin seismic gap earthquake: Partial rupture of a weakly coupled megathrust

In the 1970s, the Shumagin Islands region of the Alaska subduction zone was identified as a seismic gap expected to host a future great [moment magnitude (Mw) ≥8.0] earthquake. More recent geodetic data indicate that this region is weakly coupled, and the geologic record shows little evidence of past large events. From July to October 2020, a series of earthquakes occurred in this region, raising the possibility of greater coupling. The initial Mw 7.8 thrust faulting earthquake straddled the eastern edge of the Shumagin Gap and was followed by an Mw 7.6 strike-slip earthquake within the Shumagin Gap. Stress modeling indicates that this strike-slip earthquake is in fact favored if the Shumagin Gap has low coupling, whereas a highly coupled Shumagin Gap inhibits that type and location of earthquake. The initial thrust earthquake and its afterslip enhanced the strike-slip loading within the subducting slab, helping to trigger the October event.

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Photoinhibition in vivo and in vitro Involves Weakly Coupled Chlorophyll–Protein Complexes‡¶

Photochemistry and Photobiology ◽

10.1562/0031-8655(2002)075<0613:pivaiv>2.0.co;2 ◽

2002 ◽

Vol 75 (6) ◽

pp. 613 ◽

Cited By ~ 31

Author(s):

Stefano Santabarbara ◽

Ilaria Cazzalini ◽

Andrea Rivadossi ◽

Flavio M. Garlaschi ◽

Giuseppe Zucchelli ◽

...

Keyword(s):

Protein Complexes ◽

Weakly Coupled ◽

Chlorophyll Protein Complexes ◽

Chlorophyll Protein

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ENTORNO PERSONAL DE APRENDIZAJE BASE, UN SISTEMA DE ACTIVIDADES PARA LA EVALUACIÓN DEL APRENDIZAJE AUTÓNOMO DE IDIOMAS.

REVISTA CIENCIAS PEDAGÓGICAS E INNOVACIÓN ◽

10.26423/rcpi.v4i2.138 ◽

2016 ◽

Vol 4 (2) ◽

Author(s):

Yoan Martínez Márquez ◽

Yalice Gámez Batista ◽

Norberto Valcárcel Izquierdo

Keyword(s):

Learning Styles ◽

Language Learning ◽

Self Regulation ◽

Personal Characteristics ◽

Positive Influence ◽

General Terms ◽

Communication Processes ◽

Weakly Coupled ◽

The One ◽

Meaningful Connections

Las TIC median las interacciones y la comunicación de los estudiantes a diario. Se conciben como mediado-ras de la reflexión y la autorregulación de la actividad del estudiante, resultante de la interacción consciente de la percepción que tiene el estudiante sobre si con la que negocia con el resto de los estudiantes, los ase-sores y la sociedad en general. En este contexto el aprovechamiento de las TIC debe promover una influen-cia formativa en los espacios formales y no formales. Las condicionantes de complementariedad de espa-cios y de unidad en la diversidad de recursos tecnológicos y didácticos deben guiar la actividad que tenga al estudiante como centro de la misma.Ya no se trata de integrar las TIC en el proceso de formación, haciéndolo formal y estandarizado. El reto está en que sean las características personales de los estudiantes, sus estilos de aprendizaje, sus conoci-mientos y experiencias previas, y sus esquemas afectivos los que marquen el aprovechamiento de las TIC en la evaluación del aprendizaje autónomo de inglés.En el presente trabajo se estructura el aprovechamiento de las TIC mediante un EPA base para la evalua-ción del aprendizaje autónomo de inglés. El EPA base constituye un andamiaje de personas, procedimien-tos, espacios de interacción, y de recursos tecnológicos y didácticos. Los componentes que lo conforman se encuentran débilmente acoplados por la tecnología y altamente cohesionados por la significatividad de las conexiones que el estudiante establece entre ellos. Palabras Clave: Aprendizaje, Autonomía, Entorno, Evaluación, Personal. ABSTRACT There is no doubt about the key role of ICT in the interaction and communication processes among students. ICT are thought as a mean for the reflection and self-regulation of students´ activity, which is in a permanent conscientious comparison between the perception a student has about him/herself and the one he/she nego-tiates with the rest of students, advisors and society in general terms. In this context, ICT should promote a positive influence on student formation in formal and non-formal spaces. The conditionals related to spaces combined support and union in the diversity of technological and didactical resources should guide every activity having students at the center of its conception.It is no longer about integrating ICT to the formation process making it formal and standardized. The chal-lenge on autonomous language learning evaluation with ICT has to do with making the differences through personal characteristics of students, their learning styles, previous experiences and affective schemas.In this paper the use of ICT is structured by means of a PLE frame for the evaluation of English autonomous language learning. It is a scaffolding of people, procedures, interaction spaces, and technological and didac-tical resources. Its components are weakly coupled by technologies and highly cohesive by the meaningful connections students establish among them. Keywords: Learning, Autonomy, Evaluation, Environment, Personal. Recibido: septiembre de 2016Aprobado: noviembre de 2016

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Non-Plasmonic SERS with Silicon: Is It Really Safe? New Insights into Opto-Thermics of Core/Shell Microbeads

10.26434/chemrxiv.5813979.v1 ◽

2018 ◽

Author(s):

Nicolò Bontempi ◽

Irene Vassalini ◽

Stefano Danesi ◽

Matteo Ferroni ◽

Paolo Colombi ◽

...

Keyword(s):

Critical Role ◽

Raman Laser ◽

Core Shell ◽

Thermal Coupling ◽

Melting Points ◽

Experimental Proof ◽

Weakly Coupled ◽

Light Management ◽

Laser Sources ◽

First Time

<p>Here we investigate for the first time the opto-thermal behavior of SiO<sub>2</sub>/Si core/shell microbeads (Si-rex) irradiated with three common Raman laser sources (lambda=532, 633, 785 nm) under real working conditions. We obtained an experimental proof of the critical role played by bead size and aggregation in heat and light management, demonstrating that in the case of strong opto-thermal coupling the temperature can exceed that of the melting points of both core and shell components. In addition, we also show that weakly coupled beads can be utilized as stable substrates for plasmon-free SERS experiments.</p>

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Stabilization of the Weakly Coupled Wave-Plate System with One Internal Damping

Vietnam Journal of Mathematics ◽

10.1007/s10013-021-00493-9 ◽

2021 ◽

Author(s):

Xiaoyu Fu ◽

Qi Lü

Keyword(s):

Internal Damping ◽

Wave Plate ◽

Weakly Coupled ◽

Plate System ◽

Coupled Wave

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6d (2, 0) and M-theory at 1-loop

Journal of High Energy Physics ◽

10.1007/jhep01(2021)133 ◽

2021 ◽

Vol 2021 (1) ◽

Author(s):

Luis F. Alday ◽

Shai M. Chester ◽

Himanshu Raj

Keyword(s):

Flat Space ◽

Lagrangian Description ◽

Loop Correction ◽

Higher Derivative ◽

Weakly Coupled ◽

S Matrix ◽

Space Limit ◽

Tensor Multiplet ◽

First Time ◽

M Theory

Abstract We study the stress tensor multiplet four-point function in the 6d maximally supersymmetric (2, 0) AN−1 and DN theories, which have no Lagrangian description, but in the large N limit are holographically dual to weakly coupled M-theory on AdS7× S4 and AdS7× S4/ℤ2, respectively. We use the analytic bootstrap to compute the 1-loop correction to this holographic correlator coming from Witten diagrams with supergravity R and the first higher derivative correction R4 vertices, which is the first 1-loop correction computed for a non-Lagrangian theory. We then take the flat space limit and find precise agreement with the corresponding terms in the 11d M-theory S-matrix, some of which we compute for the first time using two-particle unitarity cuts.

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Supernova constraints on an axion-photon-dark photon interaction

Journal of High Energy Physics ◽

10.1007/jhep06(2021)167 ◽

2021 ◽

Vol 2021 (6) ◽

Author(s):

Anson Hook ◽

Gustavo Marques-Tavares ◽

Clayton Ristow

Keyword(s):

Longitudinal Mode ◽

Transverse Mode ◽

The Other ◽

Unusual Feature ◽

Dark Sector ◽

Longitudinal Modes ◽

Dark Photon ◽

Transverse Modes ◽

Weakly Coupled ◽

Photon Coupling

Abstract We present the supernova constraints on an axion-photon-dark photon coupling, which can be the leading coupling to dark sector models and can also lead to dramatic changes to axion cosmology. We show that the supernova bound on this coupling has two unusual features. One occurs because the scattering that leads to the trapping regime converts axions and dark photons into each other. Thus, if one of the two new particles is sufficiently massive, both production and scattering become suppressed and the bounds from bulk emission and trapped (area) emission both weaken exponentially and do not intersection The other unusual feature occurs because for light dark photons, longitudinal modes couple more weakly than transverse modes do. Since the longitudinal mode is more weakly coupled, it can still cause excessive cooling even if the transverse mode is trapped. Thus, the supernova constraints for massive dark photons look like two independent supernova bounds super-imposed on top of each other.

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Neutrino oscillation constraints on U(1)′ models: from non-standard interactions to long-range forces

Journal of High Energy Physics ◽

10.1007/jhep01(2021)114 ◽

2021 ◽

Vol 2021 (1) ◽

Author(s):

Pilar Coloma ◽

M. C. Gonzalez-Garcia ◽

Michele Maltoni

Keyword(s):

Contact Interaction ◽

Equivalence Principle ◽

Laboratory Experiments ◽

Global Analysis ◽

Gauge Bosons ◽

Lepton Flavor ◽

Long Baseline ◽

Oscillation Analysis ◽

Weakly Coupled ◽

Effective Contact

Abstract We quantify the effect of gauge bosons from a weakly coupled lepton flavor dependent U(1)′ interaction on the matter background in the evolution of solar, atmospheric, reactor and long-baseline accelerator neutrinos in the global analysis of oscillation data. The analysis is performed for interaction lengths ranging from the Sun-Earth distance to effective contact neutrino interactions. We survey ∼ 10000 set of models characterized by the six relevant fermion U(1)′ charges and find that in all cases, constraints on the coupling and mass of the Z′ can be derived. We also find that about 5% of the U(1)′ model charges lead to a viable LMA-D solution but this is only possible in the contact interaction limit. We explicitly quantify the constraints for a variety of models including $$ \mathrm{U}{(1)}_{B-3{L}_e} $$ U 1 B − 3 L e , $$ \mathrm{U}{(1)}_{B-3{L}_{\mu }} $$ U 1 B − 3 L μ , $$ \mathrm{U}{(1)}_{B-3{L}_{\tau }} $$ U 1 B − 3 L τ , $$ \mathrm{U}{(1)}_{B-\frac{3}{2}\left({L}_{\mu }+{L}_{\tau}\right)} $$ U 1 B − 3 2 L μ + L τ , $$ \mathrm{U}{(1)}_{L_e-{L}_{\mu }} $$ U 1 L e − L μ , $$ \mathrm{U}{(1)}_{L_e-{L}_{\tau }} $$ U 1 L e − L τ , $$ \mathrm{U}{(1)}_{L_e-\frac{1}{2}\left({L}_{\mu }+{L}_{\tau}\right)} $$ U 1 L e − 1 2 L μ + L τ . We compare the constraints imposed by our oscillation analysis with the strongest bounds from fifth force searches, violation of equivalence principle as well as bounds from scattering experiments and white dwarf cooling. Our results show that generically, the oscillation analysis improves over the existing bounds from gravity tests for Z′ lighter than ∼ 10−8→ 10−11 eV depending on the specific couplings. In the contact interaction limit, we find that for most models listed above there are values of g′ and MZ′ for which the oscillation analysis provides constraints beyond those imposed by laboratory experiments. Finally we illustrate the range of Z′ and couplings leading to a viable LMA-D solution for two sets of models.

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