Results 41 to 50 of about 15,357 (276)

Monitoring active osprey nests with drones is more time efficient and less disturbing than conventional methods

open access: yesWildlife Biology, EarlyView.
Drones are used to monitor bird nesting sites at less accessible locations, such as on cliffs, human infrastructure, or within the tree canopy. While there are a growing number of studies documenting avian behavioral responses to various drones, there is a continued need to monitor taxa‐specific responses to different drone models. We explored both the
Natasha K. Murphy   +4 more
wiley   +1 more source

Design of microstrip patch antenna for IEEE 802.16-2004 applications [PDF]

open access: yes, 2011
This thesis presents microstrip patch antenna IEEE 802.16-2004 standards for microwave applications and WiMax. Narrow bandwidth (BW) is the main defect of microstrip patch antenna in wireless communication.
Al-Rawachy, Ehab Esam Dawood
core  

The Unsung Hero Towards Net Zero: The Role of Community Engagement in Circular Economy Capabilities

open access: yesBritish Journal of Management, EarlyView.
Abstract Prior circular economy (CE) literature has predominantly focused on technological knowledge in the development of firms’ CE capabilities. However, since CE represents a sustainable way of life that intricately links materials, technology and affected communities, technological knowledge alone is only partially useful.
Limin Fu
wiley   +1 more source

Couple Anti-Swing Obstacle Avoidance Control Strategy for Underactuated Overhead Cranes

open access: yesActuators
Overhead cranes are widely used for transportation in factories. They move slowly by manual operation to prevent the payload from swinging sharply or colliding with sudden obstacles.
Shuo Meng   +4 more
doaj   +1 more source

An experimental study of the efficiency of optimal control for lifting machines [PDF]

open access: yes, 2019
The article is devoted to the synthesis of optimal speed performance control, in which the Pontryagin maximum principle and the phase-plane method are used to search for switching points of the relay control function.
Anishchenko, Galina   +4 more
core  

Nonlinear Dynamic Modelling and Analysis of a 3-D Overhead Gantry Crane System with System Parameters Variation [PDF]

open access: yes, 2010
Overhead cranes are widely used in industry for transportation of heavy loads. The natural sway of crane payloads is detrimental to safe and efficient operation. However, the crane acceleration, required for motion, always induces undesirable load swing.
Fairuz Rizal, Mohamad Rashidi   +3 more
core   +2 more sources

An Experimental Exploration of Cognitive Workload and Situational Awareness in Virtual Reality: Implications for Non‐Clinical Emotional Support

open access: yesInternational Journal of Methods in Psychiatric Research, Volume 35, Issue 1, March 2026.
ABSTRACT Objectives Many people face emotional challenges without meeting the criteria for clinical mental disorders. Virtual Reality (VR) has become popular in psychotherapy due to accessibility, but it can sometimes increase cognitive workload (CWL) and decrease situational awareness (SA).
Fabiha Islam   +3 more
wiley   +1 more source

Comparison of anti-vibration control structures for single pendulum cranes

open access: yesResults in Engineering
The practical implementation of feedback-based anti-sway control for overhead cranes is often constrained by sensor noise, high installation costs, and harsh operating environments, driving a shift toward simple, sensor-less solutions.
Trong Hieu Do   +3 more
doaj   +1 more source

MODEL RESEARCH OF THE ACIVE VIBROIZOLATION CABS MACHINE [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2014
The study was carried out computer simulations of mechatronic model bridge crane, which is intended to theoretical evaluation of the possibility of eliminating the mechanical vibrations affecting the operator's cab driven machine.
Jerzy MARGIELEWICZ
doaj  

Failure of two overhead crane shafts

open access: yesEngineering Failure Analysis, 2014
The failure analysis of two overhead crane shafts is presented: the failure of an overhead crane drive shaft and the failure of an overhead crane gearbox shaft, due to rotating-bending fatigue. The fracture of the overhead crane drive shaft originated in small radius fillet between two different diameters of the shaft.
Domazet, Željko   +2 more
openaire   +5 more sources

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