Results 11 to 20 of about 7,500 (214)

Fault Diagnosis of Elevator Doors Using Control State Information

open access: yesIEEE Access, 2022
In this study, an integrated framework involving state classification, preprocessing, and classification is proposed for the fault diagnosis of elevator doors using control state information.
Hyun Chae, Jae Eung Lee, Ki-Yong Oh
doaj   +1 more source

Feasibility of Shape-Memory Ni/Ti Alloy Wire Containing Tube Elevators for Transcrestal Detaching Maxillary Sinus Mucosa: Ex Vivo Study

open access: yesCellular Physiology and Biochemistry, 2016
Background: Osteotome sinus floor elevation is a less invasive approach to augment an insufficient alveolar bone at the posterior maxilla for dental implantation.
Yanfeng Li   +8 more
doaj   +1 more source

The Causal Factors of Elevator Maintenance: A Perspective from Saudi Arabia Healthcare Facility Management

open access: yesBuildings, 2022
Maintenance is crucial for healthcare facilities in terms of both the continuity of operations and annual costs. Many maintenance issues are associated with design decisions that pave the way for added costs in later lifecycle stages. Some systems, e.g.,
Hassan Alassafi   +3 more
doaj   +1 more source

Real-time algorithms for the bilevel double-deck elevator dispatching problem

open access: yesEURO Journal on Computational Optimization, 2019
Double-deck elevators consist of two elevator cars attached together and, thus, save building core space. In the destination control system (DCS), passengers register their destination floors in the elevator lobbies.
Janne Sorsa
doaj   +1 more source

Adaptive Neural Network-Based Sliding Mode Backstepping Control for Near-Space Morphing Vehicle

open access: yesAerospace, 2023
In order to obtain good flight performance in the near-space morphing vehicle (NMV) cruise phase, this paper proposes an adaptive sliding mode backstepping control scheme based on a neural network, aiming at the reduction of elevator control efficiency ...
Shutong Huang, Ju Jiang, Ouxun Li
doaj   +1 more source

Einstein's quantum elevator: Hermitization of non-Hermitian Hamiltonians via a generalized vielbein formalism

open access: yesPhysical Review Research, 2022
The formalism for non-Hermitian quantum systems sometimes blurs the underlying physics. We present a systematic study of the vielbeinlike formalism which transforms the Hilbert space bundles of non-Hermitian systems into the conventional ones, rendering ...
Chia-Yi Ju   +5 more
doaj   +1 more source

Modal and Dynamic Analysis of a Tether for a Nonequatorial Space Elevator

open access: yesIEEE Access, 2018
To study the fundamental dynamics of the nonequatorial space elevator, a universal modeling strategy is presented, which applies to any anchored latitude. The equations of motion are established on the basis of the lumped mass model of the tether coupled
Zhenkun Wang   +3 more
doaj   +1 more source

Group Elevator Peak Scheduling Based on Robust Optimization Model

open access: yesAdvances in Electrical and Computer Engineering, 2013
Scheduling of Elevator Group Control System (EGCS) is a typical combinatorial optimization problem. Uncertain group scheduling under peak traffic flows has become a research focus and difficulty recently.
ZHANG, J., ZONG, Q.
doaj   +1 more source

HVAC Operation Schemes and Commissioning Process Resolving Stack Effect Problem and Adjusting According to Changes in the Environment: A Case Study in High-Rise Building in South Korea

open access: yesEnergies, 2021
Various problems often arise in high-rise buildings during the winter months due to the stack effect. In this study, the high-rise building of interest, located in South Korea, was experiencing constant loud noises in the winter due to the stack effect ...
Jungyeon Yu   +4 more
doaj   +1 more source

Tall Buildings and Elevators: A Review of Recent Technological Advances

open access: yesBuildings, 2015
Efficient vertical mobility is a critical component of tall building development and construction. This paper investigates recent advances in elevator technology and examines their impact on tall building development. It maps out, organizes, and collates
Kheir Al-Kodmany
doaj   +1 more source

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