Results 61 to 70 of about 2,670,948 (163)

Beyond barriers: fish assemblage recovery following dam removal on the Cuyahoga River, a Lake Erie tributary

Restoration Ecology, Volume 34, Issue 7, September 2026.
Dam removals are increasing globally, yet ecological outcomes vary widely because biological recovery depends on post‐removal connectivity and access to source populations. We evaluated how multiple dam removals and remaining fragmentation influenced fish assemblage recovery in the Cuyahoga River (OH, United States), a historically polluted Great Lakes
Matthew R. Acre, Sophia M. Bonjour, Nicholas D. Fischer, Andy T. Mueller, James J. Roberts, Ryan J. Trimbath, Curtis P. Wagner, Ramsey A. S. Langford, Eric R. Waits, Daniel J. Sullivan, John T. Belcik, Alexander V. Catalano, Nicholas A. Barkowski, Marc A. Mills, David M. Walters   +14 more
wiley   +1 more source

Proposta de rede de interconexão WDM com controle TDM Proposal of WDM interconnection network with TDM control

Acta Scientiarum: Technology, 1999
Este artigo apresenta uma proposta de rede de interconexão WDM com controle TDM e discute os princípios da tecnologia WDM. O artigo também classifica as redes de interconexão WDM e discute as arquiteturas de redes de interconexão e os protocolos de ...
João Angelo Martini
doaj  

Black Phosphorus/Ferroelectric CuInP2S6 Heterostructures Empowering Nonvolatile Photonic Convolutional Computing

Laser &Photonics Reviews, Volume 20, Issue 16, 21 August 2026.
ABSTRACT The growing demands of artificial intelligence require new energy‐efficient and nonvolatile computing paradigms. To meet this challenge, we demonstrate a foundational device platform for optical fiber computing that targets the signal decay and power consumption bottlenecks of conventional systems.
Yule Zhang, Huide Wang, Bowen Du, Yi Liu, Ziqian Wang, Wenkai Wang, Yihan Zhu, Changle Meng, Honghai Zhu, Lizhuo Zhou, Yujie Zhou, Zhongjian Xie, Lingfeng Gao, Guoqing Liu, Yong Liu, Yanqi Ge, Zhi Chen, Songrui Wei, Han Zhang   +18 more
wiley   +1 more source

Characterization of wavelength interleaving in radio-over-fiber systems employing WDM/SCM [PDF]

, 2006
A radio-over-fiber (RoF) distribution system incorporating both sub-carrier multiplexing and wavelength division multiplexing (WDM) technologies is presented. This signal is directly modulated onto three high-speed lasers.
Anandarajah, Prince M., Barry, Liam P., Kaszubowska-Anandarajah, Aleksandra, Hu, Ling   +3 more
core   +2 more sources

Energy-Saving Mechanism in WDM/TDM-PON Based on Upstream Network Traffic

Photonics, 2014
One of the main challenges of Passive Optical Networks (PONs) is the resource (bandwidth and wavelength) management. Since it has been shown that access networks consume a significant part of the overall energy of the telecom networks, the resource ...
Paola Garfias, Marilet De Andrade, Massimo Tornatore, Anna Buttaboni, Sebastià Sallent, Lluís Gutiérrez   +5 more
doaj   +1 more source

Optical Phased Arrays on Photonic Integrated Circuit Platforms: Challenges, Opportunities, and Future Applications

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
Integrated optical phased arrays are emerging as scalable engines for solid‐state beam steering and programmable wavefront control. This Review maps the field from beam‐steering principles and core building blocks to material platforms, system‐level bottlenecks, and application frontiers, highlighting how heterogeneous integration, aperiodic ...
Jingwei Li, Yuyuan Han, Aoxiang Chen, Pengpeng Li, Xinglin Zhu, Guanbao Zhao, Luohan Peng, Huaibin Zheng   +7 more
wiley   +1 more source

Design of a survivable WDM photonic network

Proceedings of INFOCOM '97, 2002
We consider schemes for protecting a network using a wavelength division multiplexing (WDM) infrastructure against component or link failures. First, we explain how protection can be achieved by hardware redundancy. Then, we consider that with WDM networks, the failure of a single link or component may cause the simultaneous failure of several optical ...
Armitage, J., Crochat, Olivier, Le Boudec, Jean-Yves   +2 more
openaire   +2 more sources

Alzheimer's disease heterogeneity and co‐pathologies: Defining novel targets, biomarkers, modalities, and research methodologies

Alzheimer's &Dementia: Translational Research &Clinical Interventions, Volume 12, Issue 3, July/September 2026.
Abstract Alzheimer's disease (AD) is a biologically heterogeneous condition with vascular, proteinopathic, metabolic, and immune processes jointly shaping its clinical expression, trajectory of progression, and response to therapeutic intervention.
Malú Gámez Tansey, Sasha Bozeat, Peter Ackerman, Alireza Atri, Christopher J. Barnum, Patrik Brundin, Carlos Abreu de Carvalho, Adam S. Fleisher, Ana Graf, Elizabeth Head, Geoffrey A. Kerchner, Hartmuth C. Kolb, Akihiko Koyama, Mariel Kozberg, Cheryl E. G. Leyns, Jorge J. Llibre‐Guerra, Niklas Mattsson‐Carlgren, David McKissock, Melissa E. Murray, Liana S. Rosenthal, Carrie Rubel, Suzanne E. Schindler, Julie A. Schneider, Adam J. Schwarz, Kirsten M. Scott, Tamara Seredenina, Duygu Tosun, Rebecca L. Wallings, Hong Wang, Donna M. Wilcock, Maria Carrillo, Simin Mahinrad, Christopher J. Weber   +32 more
wiley   +1 more source

Optical signal processing via two-photon absorption in a semiconductor microcavity for the next generation of high-speed optical communications network [PDF]

, 2006
Due to the introduction of new broadband services, individual line data rates are expected to exceed 100 Gb/s in the near future. To operate at these high speeds, new optical signal processing techniques will have to be developed.
Guo, Wei Hua, O\u27Dowd, John, Krug, T., O'Dowd, John, Bradley, L., Donegan, John Francis, Folliot, Hervé, Maguire, P.J., O'Dowd, J., Guo, W.H., Donegan, J., Folliot, H., Lynch, M., Barry, Liam P., Lynch, Michael, Bradley, Ann Louise, Maguire, Paul J., Barry, Liam, P.   +17 more
core   +2 more sources

Protection interoperability for WDM optical networks

IEEE/ACM Transactions on Networking, 1998
The failure of a single optical link or node in a wavelength division multiplexing (WDM) network may cause the simultaneous failure of several optical channels. In some cases, this simultaneity may make it impossible for the higher level (SONET or IP) to restore service.
Crochat, O., Le Boudec, J. Y., Gerstel, O., Le Boudec, Jean-Yves   +3 more
openaire   +1 more source