Results 81 to 90 of about 260,353 (317)

The low inter-radiator transmittance MIMO antenna with DGS and parasitic elements for Ku-Band application

open access: yesNetworks and Heterogeneous Media
This article presents a four-port multiple-input multiple-output (MIMO) antenna using double-sided decoupling techniques. The size of the quad-element MIMO antenna is 36 mm × 36 mm × 1.6 mm. The reflection coefficient is
Muhammad Irshad Khan   +8 more
doaj   +1 more source

A Polynomial-time Algorithm for Outerplanar Diameter Improvement

open access: yes, 2014
The Outerplanar Diameter Improvement problem asks, given a graph $G$ and an integer $D$, whether it is possible to add edges to $G$ in a way that the resulting graph is outerplanar and has diameter at most $D$.
Cohen, Nathann   +6 more
core   +3 more sources

Influence of Outcoupling Layers on Top‐Emitting Perovskite Light‐Emitting Diodes

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Top‐emitting perovskite LEDs offer benefits over typical bottom‐emitting architectures, toward lasing, improved thermal management, and on‐chip fabrication compatibility. Outcoupling layers offer a strategy uniquely applicable to top‐emitting LEDs to optimize EQE by improving optical outcoupling.
James C. Loy   +5 more
wiley   +1 more source

The spatial implications of urban renewal carried out by the ECC programs in Pécs

open access: yesHungarian Geographical Bulletin, 2011
Cultural economy – interpreted in the broadest sense – is a phenomenon existing among the impacts of post-industrial transformation and renewal of cities.
András Trócsányi
doaj  

Blockchain-Based Framework for Enhancing Interoperability and Security in EHR Exchange Using Lightweight ECC Proxy Re-Encryption

open access: yesActa Informatica Pragensia
Background: The sharing of electronic health records among hospitals is crucial for ensuring consistent patient treatment. However, the process remains challenging due to the existence of varied systems, privacy concerns and interoperability issues.
Devaramane Yogaraj Ashwini   +1 more
doaj   +1 more source

Yield, Area and Energy Optimization in Stt-MRAMs using failure aware ECC

open access: yes, 2016
Spin Transfer Torque MRAMs are attractive due to their non-volatility, high density and zero leakage. However, STT-MRAMs suffer from poor reliability due to shared read and write paths.
Fong, Xuanyao   +3 more
core   +1 more source

Understanding and Circumventing Failure Mechanisms in Chalcogenide Optical Phase Change Material Ge2Sb2Se4Te

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Chalcogenide optical PCMs have gathered interest for their potential in compact, non‐volatile optics and photonics. Free‐space PCM metasurfaces require new considerations from phase change memory that need to be addressed for reliable scale‐up. Several failure mechanisms pertaining to free‐space PCM devices and layout methods are isolated to prevent ...
Cosmin Constantin Popescu   +19 more
wiley   +1 more source

Instruções de uso para 'o livro de Hilda' (1902), de João Kopke, aos mestres

open access: yesRevista Brasileira de História da Educação, 2015
Neste artigo, pretendemos apresentar o livro de Hilda – processo analytico da leitura, com data de 1902, que faz parte do acervo pessoal da família Köpke e que, provavelmente, não foi publicado. Trata-se de uma cartilha manuscrita, criada por João Köpke (
Norma Sandra de Almeida Ferreira   +1 more
doaj  

Lightweight ECC and token based authentication mechanism for WSN-IoT

open access: yesНаучно-технический вестник информационных технологий, механики и оптики
The paper deals with Wireless Sensor Networks (WSN) registered in a specific Internet of Things (IoTʼs) network that have different kind of applications. They come into use once they are successfully registered within a specific IoT network.
L. Sasirega, C. Shanthi
doaj   +1 more source

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