Results 31 to 40 of about 336,506 (292)

Wireless MIMO Switching: Weighted Sum Mean Square Error and Sum Rate Optimization [PDF]

open access: yes, 2012
This paper addresses joint transceiver and relay design for a wireless multiple-input-multiple-output (MIMO) switching scheme that enables data exchange among multiple users.
Guo, Dongning   +3 more
core   +1 more source

Almon-KL estimator for the distributed lag model

open access: yesArab Journal of Basic and Applied Sciences, 2021
The Almon technique is widely used to estimate the parameters of the distributed lag model (DLM). The technique suffers a setback from the challenge of multicollinearity because the explanatory variables and their lagged values are often correlated.
Adewale F. Lukman, Golam B. M. Kibria
doaj   +1 more source

The Minimum Shared Edges Problem on Grid-like Graphs

open access: yes, 2017
We study the NP-hard Minimum Shared Edges (MSE) problem on graphs: decide whether it is possible to route $p$ paths from a start vertex to a target vertex in a given graph while using at most $k$ edges more than once.
D Bhatia   +13 more
core   +1 more source

Channel Estimation and Optimal Pilot Signals for Universal Filtered Multi-Carrier (UFMC) Systems [PDF]

open access: yes, 2017
We propose channel estimation algorithms and pilot signal optimization for the universal filtered multi-carrier (UFMC) system based on the comb-type pilot pattern.
He, Chang   +4 more
core   +1 more source

NFDI MatWerk Ontology (MWO): A BFO‐Compliant Ontology for Research Data Management in Materials Science and Engineering

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the NFDI‐MatWerk Ontology (MWO), a Basic Formal Ontology‐based framework for interoperable research data management in materials science and engineering (MSE). Covering consortium structures, research data management resources, services, and instruments, MWO enables semantic integration, Findable, Accessible, Interoperable, and ...
Hossein Beygi Nasrabadi   +4 more
wiley   +1 more source

Investigation on the Effects of Structural Dynamics on Rolling Bearing Fault Diagnosis by Means of Multibody Simulation

open access: yesInternational Journal of Rotating Machinery, 2018
The present study aims to combine the fields modal analysis and signal processing and to show the use of Frequency Response Function (FRF), as a vibration transfer path, in enhancing reliability and abilities of the next generation vibration-based ...
Reza Golafshan   +4 more
doaj   +1 more source

Prediksi puncak pandemi Covid-19 di Indonesia dengan model SIR

open access: yesJurnal Teknologi dan Sistem Komputer, 2021
Penelitian ini menyajikan penggunaan model Susceptible, Infected, and Removed (SIR) untuk memprediksi kondisi penularan Covid-19 di Indonesia. Data resmi pemerintah yang terdiri dari kasus positif, meninggal, dan sembuh digunakan sebagai data aktual ...
Bambang Ari Wahyudi, Irma Palupi
doaj   +1 more source

Sampling and Reconstruction of Graph Signals via Weak Submodularity and Semidefinite Relaxation

open access: yes, 2017
We study the problem of sampling a bandlimited graph signal in the presence of noise, where the objective is to select a node subset of prescribed cardinality that minimizes the signal reconstruction mean squared error (MSE).
Hashemi, Abolfazl   +3 more
core   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

open access: yesAdvanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek   +5 more
wiley   +1 more source

Performance of Some Yang and Chang estimators in Logistic Regression Model. [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية
In logistic regression models, the maximum likelihood (ML) method is always one of the commonly used to estimate the model parameters. However, unstable parameter estimates are obtained as a result due to the problem of multicollinearity and the mean ...
JAMES OLADAPO, k. Ayinde K. Ayinde
doaj   +1 more source

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