Ground-based (GB) radar imaging can provide mapping of interesting terrains and accurately monitor deformation in a noncontact manner, which has found wide application landslide warning so on. In this article, novel 3-D synthetic aperture (SAR) array phase error calibration algorithm is proposed using the micro multiple-input–multiple-output (MIMO) millimeter-wave (mmW) sensor. The framework Doppler-division multiplexing (DDM) MIMO-SAR designed to be suitable for moving platform, i.e.,...

Understanding the neural basis of behaviour requires studying brain activity in behaving subjects using complementary techniques that measure responses at multiple spatial scales, and developing computational tools for understanding mapping between these measurements. Here we report first results widefield imaging genetically encoded calcium indicator (GCaMP6f) signals from V1 macaques. This technique provides a robust readout visual population columnar scale over mm2 several months. To...

At present, aero engine fault diagnosis is mainly based on the steady-state condition at cruise phase, and gas path parameters in entire flight process are not effectively used. same time, high quality monitoring measurements always available as a result accuracy of might be affected. There recognized need for real-time performance engines operating under transient conditions, which can improve their condition-based maintenance. Recent studies have demonstrated capability sequential...

Behavioral performance in detection and discrimination tasks is likely to be limited by the quality nature of signals carried populations neurons early sensory cortical areas. Here we used voltage-sensitive dye imaging (VSDI) directly measure neural population responses primary visual cortex (V1) monkeys performing a reaction-time task. Focusing on temporal properties responses, found that V1 are consistent with stimulus-evoked response amplitude latency depend target contrast...

Purpose This study aims to investigate the safety and liability of autonomous vehicles (AVs), identify contributing factors quantitatively so as provide potential insights on AVs. Design/methodology/approach The actual crash data were obtained from California DMV Sohu websites involved in collisions AVs 2015 2021 with 210 observations. Bayesian random parameter ordered probit model was proposed reflect AVs, respectively, well accommodating heterogeneity issue simultaneously. Findings...

Exploring the heterogeneity of factors influencing severity electric bicycle crashes and motorcycle can help target accident prevention policies to improve traffic safety. Therefore, this paper establishes a mean random parameter logit model using crash data from 2016 2020 in Guangxi explore different involving motorcycles bicycles. The results show that key influences on differ crashes. At same time, some common affect two types degrees. In addition, complex interaction effects unobserved...

Can direct stimulation of primate V1 substitute for a visual stimulus and mimic its perceptual effect? To address this question, we developed an optical-genetic toolkit to ‘read’ neural population responses using widefield calcium imaging, while simultaneously optogenetics ‘write’ into behaving macaques. We focused on the phenomenon masking, where detection dim target is significantly reduced by co-localized medium-brightness mask (Cornsweet Pinsker, 1965; Whittle Swanston, 1974). Using our...

The effective assessment of drivers' driving capability under the condition an advanced driver assistance system is great significance to precise switching rights between human and machine promotion development man-computer collaboration. In this study, real-time collected warning data from bus state monitoring (DSMS) (ADAS) were utilized determine comprehensive indicators. information utility interaction indicators considered, integrated weight method based on standard deviations was...

Abstract Steam curing prefabrication is a feasible way to promote the application of recycled aggregate in background building industrialization. The combined use slag and fly ash contributes comprehensive improvement both early later-stage performance concrete (RAC). However, steam regime for RAC composed remains unclear, including appropriate temperatures time. In this study, influences (20, 40, 60, 80°C), time (6, 9, 12 h) mineral admixtures (slag powder ash) on demoulding strength...

Individual differences between various riders cause risky riding behaviors such as violations, taking the lead, negligence and error, pushing limits, resulting in a high incidence number of road accidents for vulnerable use group electric bike riders. Therefore, subcluster differential characteristics among were analyzed terms their confidence, risk perception, safety attitude, basic attributes. The influences formation mechanisms subclusters also explored. First, 573 clustered into 4 types,...

In order to study the probability distribution of flexural fatigue life self-compacting rubberised concrete (SCRC), tests were carried out on 100 × 400 mm size beam specimens at different stress levels. The test results show that distributions SCRC can be approximately modelled by two-parameter Weibull distribution, and their fitting correlation coefficients are over 0.9. shape parameter scale (two parameters distribution) estimated methods, namely graphical method, method moments maximum...

How do cortical responses to local image elements combine form a spatial pattern of population activity in primate V1? Here, we used voltage-sensitive dye imaging, which measures summed membrane potential activity, examine the rules that govern lateral interactions between representations two small local-oriented macaque ( Macaca mulatta ) V1. We find strong subadditive and mostly orientation-independent for nearby [2–4 mm interelement distance (IED)] gradually become linear at larger...