Results 41 to 50 of about 1,533 (217)

A junction temperature model based on heat flow distribution in an IGBT module with solder layer voids

open access: yesHeliyon
The presence of voids in a solder layer affects the thermal reliability of an insulated-gate bipolar transistor (IGBT). In this work, the effects of the size and fraction of solder layer voids and the power losses of chips on heat flow distribution ...
Qi Li   +4 more
doaj   +1 more source

DDMA MIMO radar system for low, slow, and small target detection

open access: yesThe Journal of Engineering, 2019
The low, slow, and small (LSS) target detection has always been a problem for both ground-based and air-borne radar systems. The factors such as weak target reflection energy, ground clutter, and random Doppler component will have a severe impact on ...
Fawei Yang   +3 more
doaj   +1 more source

High Anti-Reflection Large-Scale Cup-Shaped Nano-Pillar Arrays via Thin Film Anodic Aluminum Oxide Replication

open access: yesNanomaterials, 2022
Surface anti-reflection (AR) with nanometer-scaled texture has shown excellent light trapping performance involving optical devices. In this work, we developed a simple and lithography-free structure replication process to obtain large scale surface cup ...
Tangyou Sun   +9 more
doaj   +1 more source

Human or electronic vessel navigation

open access: yesPomorstvo, 2000
This paper explains some strategies for allocating tasks across the human and electronic line of conduct of a vessel. The paper tries to define what should master do, and what should be left to the system. The location strategy has to be defined by the nature of the tasks to be performed by the system; the situational milieu in which the system will ...
Matković, Milan   +2 more
openaire   +2 more sources

Anticoagulation Treatment Response Among Phenotypic ESUS Clusters: Evidence From CASPR

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate treatment effect heterogeneity across phenotypic clusters of patients with cryptogenic embolic stroke using causal inference methods. Methods From a retrospective, multicenter cohort of patients with cryptogenic embolic stroke, we estimated the treatment effect of anticoagulation versus antiplatelet therapy in patients ...
Elena Badillo Goicoechea   +53 more
wiley   +1 more source

A DTW-Based Spatio-Temporal Synchronization Method for Radar and Camera Fusion

open access: yesSensors
Roadside perception systems, also known as roadside units (RSUs), are critical in Vehicle-to-Everything (V2X) applications, yet spatio-temporal asynchrony between multiple sensors severely compromises the accuracy of fusion.
Jingjing Li   +4 more
doaj   +1 more source

SAR deceptive jamming target-detection method based on multi-angle SAR images

open access: yesThe Journal of Engineering, 2019
Deceptive jamming is an effective jamming method for synthetic aperture radar (SAR). Time-delay repeater jamming, which is an important method of deceptive jamming because of its simplicity and effectiveness, can generate false targets in the SAR image ...
Gen Li   +5 more
doaj   +1 more source

A Bound State in the Continuum Supported by a Trimeric Metallic Metasurface

open access: yesPhotonics, 2022
A bound state in the continuum (BIC) is a localized state in a continuous spectrum of radiating waves. In this study, the coupled-mode theory is introduced to more precisely interpret a symmetry-protected BIC and the quasi-BIC in a facile trimeric ...
Tao Fu, Ziyan Wang, Yonghe Chen
doaj   +1 more source

Mapping the Social Network Structure and Composition of Black Individuals With Rheumatic and Musculoskeletal Conditions

open access: yesArthritis Care &Research, EarlyView.
Objective Our objective was to describe the social networks of Black individuals with rheumatic and musculoskeletal conditions and understand the clustering of health‐related behaviors to inform future community‐based, peer‐led interventions. Methods We used an adapted Personal Network Survey for Clinical Research (PERSNET) to map the personal social ...
Taussia Boadi   +27 more
wiley   +1 more source

A Novel Method for Designing General Window Functions with Flexible Spectral Characteristics

open access: yesSensors, 2018
In the field of sensor signal processing, windows are time-/frequency-domain weighting functions that are widely applied to reduce the well-known Gibbs oscillations.
Yinghao Sun   +3 more
doaj   +1 more source

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