Results 241 to 250 of about 1,151,520 (297)

A Vascular Microphysiological Model of Lung Fibrosis Reveals That Myofibroblasts and IPF Patient‐Derived Fibroblasts Impair Angiogenesis and Vasculogenesis

Advanced Functional Materials, EarlyView.
A microphysiological lung fibrosis model recapitulates myofibroblast–vascular interactions. Induced myofibroblasts and patient‐derived IPF fibroblasts impair angiogenesis and increase vascular permeability via TGF‐β1–driven signaling. Pharmacological interventions with SB 431542 and VEGF supplementation restore vascular morphology and barrier function.
Elena Cambria, Adriana Blazeski, Eunkyung Clare Ko, Tran Thai, Shania Dantes, David A. Barbie, Sarah E. Shelton, Roger D. Kamm   +7 more
wiley   +1 more source

Golden‐Ratio–Guided Aperiodic Architected Metamaterials with Simultaneously Enhanced Strength and Toughness

Advanced Functional Materials, EarlyView.
Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng, Xinxin Wang, Ruochao Zhao, Zhendong Li, Kai Liu, Ke Yuan, Jia An, Xinwei Li, Chee Kai Chua, Zhonggang Wang   +9 more
wiley   +1 more source

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

Advanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou, Matt P. Tudball, Yiming Guo, Bia Brandt, Adam Zucconi, Wenjia Du, Junfu Bu, Daniel H. C. Wan, Jianuo Chen, Emanuele Magliocca, Feng Ryan Wang, Alexander J.E. Rettie, Patrick S. Grant, Paul R. Shearing, Rhodri Jervis, Thomas S. Miller   +15 more
wiley   +1 more source

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Clustering Heterogeneous Financial Networks

SSRN Electronic Journal, 2023
AbstractWe develop a convex‐optimization clustering algorithm for heterogeneous financial networks, in the presence of arbitrary or even adversarial outliers. In the stochastic block model with heterogeneity parameters, we penalize nodes whose degree exhibit unusual behavior beyond inlier heterogeneity.
Hamed Amini, Yudong Chen, Andreea Minca, Xin Qian   +3 more
openaire   +1 more source

Heterogeneous networking

Proceedings of the 2001 workshop on New security paradigms - NSPW '01, 2001
We believe that a network, to be survivable, must be heterogeneous. Just like a species that draws on a small gene pool can succumb to a single environmental threat, so a homogeneous network is vulnerable to a malicious attack that exploits a single weakness common to all of its components. In contrast, in a network in which each critical functionality
Yongguang Zhang, Harrick Vin, Lorenzo Alvisi, Wenke Lee, Son K. Dao   +4 more
openaire   +1 more source

Quantifying network heterogeneity

Physical Review E, 2010
Despite degree distributions give some insights about how heterogeneous a network is, they fail in giving a unique quantitative characterization of network heterogeneity. This is particularly the case when several different distributions fit for the same network, when the number of data points is very scarce due to network size, or when we have to ...
openaire   +3 more sources

Modeling heterogeneous network interference

2012 Information Theory and Applications Workshop, 2012
Cellular systems are becoming more heterogeneous with the introduction of low power nodes including femtocells, relays, and distributed antennas. Unfortunately, the resulting interference environment is also becoming more complex, making evaluation of different communication strategies for cellular systems more challenging in both analysis and ...
Heath, R.W., Kountouris, Marios
openaire   +2 more sources

Heterogeneous networking

IEEE Multimedia, 1997
The projects described in this article all deal with network heterogeneity in the context of distributing multimedia information via multicast transmission. Multicasting significantly improves the efficiency of network resource use in situations involving one-to-many or many-to-many communication.
openaire   +1 more source

Dynamics of heterogeneous polymer networks

Physical Review E, 1994
This paper discusses the effect of heterogeneities in cross-link density on network dynamics. The dynamic effects of such networks are studied in two limits, i.e., at short times and at long times. It is shown that heterogeneities in cross-link density alter the chain dynamics strongly.
Vilgis, T., Heinrich, G.
openaire   +3 more sources

Heterogeneous multicast in heterogeneous QoS networks

Proceedings. Ninth IEEE International Conference on Networks, ICON 2001., 2005
Supporting heterogeneous receivers in a multicast group is of particular importance in large internetworks as, e.g., the Internet, due to the large diversity of end-system and network access capabilities. Furthermore, it is the nature of large-scale internetworks which makes homogeneous quality of service (QoS) support unrealistic at least for the ...
J. Schmitt, F. Zdarsky, M. Karsten, R. Steinmetz   +3 more
openaire   +1 more source