Results 21 to 30 of about 266,497 (269)

A Coherent Performance for Noncoherent Wireless Systems Using AdaBoost Technique

open access: yesApplied Sciences, 2019
Boosting is a machine learning approach built upon the idea of producing a highly precise prediction rule by combining many relatively weak and imprecise rules. The Adaptive Boosting (AdaBoost) algorithm was the first practical boosting algorithm.
Heba Gamal   +4 more
doaj   +1 more source

Coherent Beam-forming Combined with Wiener Filter in Ultrasound Imaging

open access: yesCT Lilun yu yingyong yanjiu, 2022
The traditional ultrasonic dynamic focusing imaging which simply uses the delay-and-sum method in beamforming shows low resolution and poor contrast. In this study, based on the coherent pixel-based beamforming (Coherent PB), a novel Wiener pre-filter ...
Sulan PU   +4 more
doaj   +1 more source

Performance Comparison of Several Algorithms for Localization of Wideband Sources

open access: yesJournal of Telecommunications and Information Technology, 2023
In recent years, researchers have tried to estimate the direction-of-arrival (DOA) of wideband sources and several novel techniques have been proposed.
Hassan Ougraz   +3 more
doaj   +1 more source

COHERENCE AND ELICITABILITY [PDF]

open access: yesMathematical Finance, 2014
The risk of a financial position is usually summarized by a risk measure. As this risk measure has to be estimated from historical data, it is important to be able to verify and compare competing estimation procedures. In statistical decision theory, risk measures for which such verification and comparison is possible, are called elicitable.
openaire   +3 more sources

Pelatihan Menulis Surat yang Kohesif dan Koheren Berbasis Digital bagi Pelaku UMKM/Karang Taruna

open access: yesCendekia: Jurnal Pengabdian Masyarakat, 2023
Tujuan kegiatan untuk melatih pelaku UMKM dalam berkomunikasi tulis formal seperti bersurat kedinasan melalui pelatihan berbasis digital. Salah satu cara untuk meningkatkan kompetensi individual dan menguatkan karakteristik individu dalam kompetensi ...
Sintowati Rini Utami
doaj   +1 more source

Conversational Coherency* [PDF]

open access: yesCognitive Science, 1978
A major goal of this work is to specify some steps of the process by which participants maintain coherency in their conversations.The underlying element of the analysis is a construct called a “context space.” Roughly, a group of utterances that refers to a single issue or episode forms the basis for a context space.
openaire   +2 more sources

Distance and Velocity Measurement of Coherent Lidar Based on Chirp Pulse Compression

open access: yesSensors, 2019
To explore lidar, which can simultaneously measure the distance and velocity of long-distance targets at high resolution, a coherent lidar system based on chirp pulse compression has been studied.
Jing Yang, Bin Zhao, Bo Liu
doaj   +1 more source

Doppler Aerosol WiNd (DAWN) Lidar during CPEX 2017: Instrument Performance and Data Utility

open access: yesRemote Sensing, 2020
During 25 May–24 June 2017, NASA’s Doppler Aerosol WiNd (DAWN) lidar was flown on board a NASA DC-8 aircraft as part of the Convective Processes EXperiment (CPEX) airborne campaign based out of Ft. Lauderdale, FL.
Steven Greco   +3 more
doaj   +1 more source

Coherent and Non-Coherent Multilayer Index Modulation [PDF]

open access: yesIEEE Access, 2019
Index modulation assisted OFDM (OFDM-IM) has become a popular technique in wireless communications. In this paper, we proposes a novel multilayer framework for OFDM-IM. Being quite generic in its nature, the framework can be amalgamated with most of the OFDM-IM variants.
Sarath Gopi   +2 more
openaire   +3 more sources

BMT4me En Español: Multisite Feasibility and Usability Testing of a Spanish‐Language mHealth Adherence Support App for Spanish‐Speaking Caregivers of Children After Hematopoietic Stem Cell Transplantation and Cancer Treatment

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Medication nonadherence during the first 100 days after pediatric hematopoietic stem cell transplantation (HSCT) and during oncology treatment increases risk for complications. BMT4me is a caregiver‐facing mobile health (mHealth) application providing medication reminders, symptom tracking, and note‐taking features to support ...
Micah A. Skeens   +4 more
wiley   +1 more source

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