Results 61 to 70 of about 75,077 (193)

Do ceiling fans in rooms help to reduce or disperse the transmission of breathing aerosols?

open access: yesInternational Journal of Air-Conditioning and Refrigeration
The main focus of this study is the transmission of SARS-CoV-2 through virus-laden aerosols in enclosed spaces that utilize ceiling fans. The impact of an air circulation of ceiling fans on virus transmission is not clear.
Ata Nazari   +3 more
doaj   +1 more source

People detection and tracking using RGB-D cameras for mobile robots

open access: yesInternational Journal of Advanced Robotic Systems, 2016
People detection and tracking is an essential capability for mobile robots in order to achieve natural human–robot interaction. In this article, a human detection and tracking system is designed and validated for mobile robots using color data with depth
Hengli Liu   +4 more
doaj   +1 more source

Visibility and aerosol measurement by diode-laser random-modulation CW lidar [PDF]

open access: yes, 1986
Examples of diode laser (DL) random-modulation continuous wave (RM-CW) lidar measurements are reported. The ability of the measurement of the visibility, vertical aerosol profile, and the cloud ceiling height is demonstrated. Although the data shown here
Baba, H.   +4 more
core   +1 more source

Deep Learning Methods for Assessing Time‐Variant Nonlinear Signatures in Clutter Echoes

open access: yesAdvanced Intelligent Systems, EarlyView.
Motion classification from biosonar echoes in clutter presents a fundamental challenge: extracting structured information from stochastic interference. Deep learning successfully discriminates object speed and direction from bat‐inspired signals, achieving 97% accuracy with frequency‐modulated calls but only 48% with constant‐frequency tones. This work
Ibrahim Eshera   +2 more
wiley   +1 more source

Obstacle detection in underground mines using multiple LiDARs based on grid method

open access: yesGong-kuang zidonghua
To address the issues of false and missed detections in obstacle detection within underground mines caused by difficulties in filtering elevated structural point clouds and insufficient ground segmentation accuracy, a multi-LiDAR obstacle detection ...
REN Mingyang   +6 more
doaj   +1 more source

A Top-Down Hierarchical Approach for Automatic Indoor Segmentation and Connectivity Detection [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Data organization is essential for effective analysis of the spatial relationships between rooms and walls. Segmentation in successive stages plays a crucial role in this process since dividing the data set into smaller sets makes its analysis easier ...
R. M. Túñez-Alcalde   +4 more
doaj   +1 more source

A Survey of "The Sala degli Stucchi, an ornate baroque hall" [PDF]

open access: yes, 2005
The "Sala degli stucchi" is a heavely decorated baroque hall, as the Italian name itself suggests, in the Royal Palace in Turin. The present work describes a survey of this historic object.
Porporato C., Rinaudo F.
core  

Fast Second-order Cone Programming for Safe Mission Planning

open access: yes, 2017
This paper considers the problem of safe mission planning of dynamic systems operating under uncertain environments. Much of the prior work on achieving robust and safe control requires solving second-order cone programs (SOCP).
Jain, Prateek   +2 more
core   +1 more source

Archaeological Damage Assessment in Conflict Zones: Integrating Satellite Imagery and Ground Surveys in Daraa, Syria

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Satellite remote sensing is among the most significant modern methodologies supporting field archaeology. In addition to its efficiency in identifying archaeological sites, remote sensing offers a safe and cost‐effective approach in conflict zones.
Amal Al Kassem   +5 more
wiley   +1 more source

Prioritizing Feasible and Impactful Actions to Enable Secure AI Development and Use in Biology

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT As artificial intelligence continues to enhance biological innovation, the potential for misuse must be addressed to fully unlock the potential societal benefits. While significant work has been done to evaluate general‐purpose AI and specialized biological design tools (BDTs) for biothreat creation risks, actionable steps to mitigate the risk
Josh Dettman   +4 more
wiley   +1 more source

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