Results 31 to 40 of about 497 (184)

Free vibration analysis of elevator rope with vibration suppressors located except for both ends part

Nihon Kikai Gakkai ronbunshu, 2017
Vibration suppressors are used to change the natural frequency of an elevator rope and prevent resonance. The displacement of the parts of the elevator rope at both the ends is small compared to that of the center part of the rope; therefore, it is not ...
Hiroyuki KIMURA, Takahiro FUJITANI
doaj   +1 more source

Receiver tilt: a scourge for aquatic telemetry or useful predictor variable

Animal Biotelemetry, 2021
Background Water current data can be a useful predictor variable to include in acoustic telemetry studies given its link to changes in fish behaviour.
Alistair Becker, Michael B. Lowry, Matthew D. Taylor   +2 more
doaj   +1 more source

More‐than‐gender? Moving beyond gendered expectations of divergent learners in early childhood education

British Educational Research Journal, EarlyView.
Abstract In this paper, we explore how neurodivergent ways of being in early education are often gendered. The intersectionalities of gender and neurodivergence often lead to fixed expectations that perpetuate binary interpretations, pathologisations, missed diagnoses and a lack of curated support.
Ruth Churchill Dower, Hannah Hogarth
wiley   +1 more source

Load vibration reduction in rotary cranes using robust two-degree-of-freedom control approach

Advances in Mechanical Engineering, 2016
In the control of the rotary crane, it is important to consider the trade-off between the boom positioning characteristics and the sway of the load. However, it seems difficult to obtain good control performance in both of them using 1-degree-of-freedom ...
Huimin Ouyang, Guangming Zhang, Lei Mei, Xin Deng, Deming Wang   +4 more
doaj   +1 more source

Enhanced overhead crane control using ADRC and ZVD input shaping with trajectory planning [PDF]

FME Transactions
Overhead crane control with time-varying cable length presents significant challenges, particularly in maintaining accurate trolley positioning while minimizing residual payload oscillations induced by lifting and lowering operations. This paper proposes
van Dong Nguyen, Duong Minh Duc, Do Trong Hieu   +2 more
doaj   +1 more source

Do Commodity Prices and Energy Markets Drive Asymmetric Volatility in Biodiversity Finance?

Business Strategy and the Environment, EarlyView.
ABSTRACT This study examines symmetric and asymmetric volatility spillovers among biodiversity finance, commodity prices, and energy markets using daily data from 2019 to 2025. We apply the Diebold–Yilmaz time–domain connectedness model, Baruník–Křehlík frequency–domain decomposition, and an asymmetric spillover framework.
Ijaz Younis, Maqsood Ahmad, Himani Gupta, Kun Su, Waheed Ullah Shah   +4 more
wiley   +1 more source

Hybrid machine learning and genetic algorithm approach for catalyst and process optimization in Fischer–Tropsch synthesis toward sustainable fuel production

The Canadian Journal of Chemical Engineering, EarlyView.
Graphical representation of a data‐driven framework for Fischer‐Tropsch synthesis (FTS) modelling and optimization. Abstract This study presents a data‐driven approach for predicting the relationships between catalyst design, process conditions, and product selectivity in Fischer–Tropsch synthesis (FTS).
Doaa M. Hassan, Ryan Gosselin, Nicolas Abatzoglou   +2 more
wiley   +1 more source

Robust Control of Offshore Container Cranes: 3D Trajectory Tracking Under Marine Disturbances

Machines
This paper develops accurate three-dimensional trajectory tracking and anti-sway control strategies for offshore container cranes operating in an open-sea environment.
Ao Li, Shuzhen Li, Phuong-Tung Pham, Keum-Shik Hong   +3 more
doaj   +1 more source

Free vibration analysis of a string with vibration suppressors located at 1/N from both ends of the string (When N is an odd number)

Nihon Kikai Gakkai ronbunshu, 2016
A vibration suppressor is used to change the natural frequency of an elevator rope, and to prevent resonance. The elevator rope is modeled using a string. Linear string vibration is well known.
Hiroyuki KIMURA
doaj   +1 more source

Predicting Solar Photovoltaic Power Output in Saudi Arabia's Jazan Region: Performance Comparison of Machine Learning Models

Energy Science &Engineering, EarlyView.
Workflow of the PV power estimation and ML forecasting methodology. ABSTRACT Accurate prediction of solar panel energy output is vital for managing power systems effectively and maintaining a stable electrical grid. This is especially important in regions that rely heavily on renewable sources. This research provides a direct comparison of five machine
Abdoalateef Alzhrani, Abdullahi Abubakar Mas'ud, Mohd Khairul Amri Kamarudin, Firdaus Muhammad‐Sukki, Abdullahi Mohammad   +4 more
wiley   +1 more source