Results 61 to 70 of about 2,912 (188)
Fault detection and diagnostics in ventilation units using linear regression virtual sensors [PDF]
, 2018 Buildings represent a significant portion of global energy consumption. Ventilation units are one of the largest components in buildings systems and are responsible for large part of energy consumption.
Escobet Canal, Teresa +4 more
core +1 more source
Expert Systems, Volume 43, Issue 2, February 2026.ABSTRACT Fault detection in district heating (DH) substations is critical for energy efficiency and reliability. However, it is challenged by scarce fault labels, low‐frequency data, privacy concerns, and battery‐constrained gateways. We propose a novel hybrid semi‐supervised federated domain adaptation architecture for fault detection in DH.
Jonne van Dreven +5 more
wiley +1 more source
Damage Tolerant Active Contro l: Concept and State of the Art [PDF]
, 2012 Damage tolerant active control is a new research area relating to fault tolerant control design applied to mechanical structures. It encompasses several techniques already used to design controllers and to detect and to diagnose faults, as well to ...
MECHBAL, Nazih, NOBREGA, Euripedes
core +2 more sources
Finding the different patterns in buildings data using bag of words representation with clustering
, 2016 The understanding of the buildings operation has become a challenging task due to the large amount of data recorded in energy efficient buildings. Still, today the experts use visual tools for analyzing the data.
Habib, Usman, Zucker, Gerhard
core +1 more source
A Bank of Reconfigurable LQG Controllers for Linear Systems Subjected to Failures [PDF]
, 2000 An approach for controller reconfiguration is presented. The starting point in the analysis is a sufficiently accurate continuous linear time-invariant (LTI) model of the nominal system.
Kanev, S., Verhaegen, M.
core +4 more sources
JAPAN ARCHITECTURAL REVIEW, Volume 9, Issue 1, January–December 2026.ABSTRACT Optimizing HVAC operation in buildings while maintaining thermal comfort and indoor air quality (IAQ) is a major challenge. This study presents a framework that combines Gaussian Process Regression (GPR) models with an exhaustive search method to improve HVAC operation.
Rino Kobayashi +4 more
wiley +1 more source
Fault Detection and Diagnosis in Air Conditioners and Refrigerators [PDF]
, 1999 A fault detection and diagnosis (FDD) method was used to detect and diagnose faults on both a refrigerator and an air conditioner during normal cycling operation.
Bullard, C.W. +2 more
core
Incipient fault diagnosis of roller bearing using optimized wavelet transform based multi-speed vibration signatures [PDF]
, 2017 Condition monitoring and incipient fault diagnosis of rolling bearing is of great importance to detect failures and ensure reliable operations in rotating machinery.
Francq, Pierre +4 more
core +1 more source
Testicular Assessment in a Selected Group of Young Buffaloes Using Doppler Ultrasonography
Veterinary Medicine and Science, Volume 12, Issue 1, January 2026.Doppler ultrasonography revealed increased peak systolic velocity (PSV) in pubertal buffalo bulls (16–18 months), indicating enhanced arterial perfusion, while other hemodynamic indices remained stable. Age‐related echotextural changes in testicular parenchyma were observed, supporting PSV as an early marker for pubertal onset and breeding soundness in
Rodrigo dos Santos Albuquerque +14 more
wiley +1 more source
Ice Phenology and Thickness in Small Arctic Lakes: Field Observations and Mechanistic Controls
Water Resources Research, Volume 62, Issue 1, January 2026.Abstract The Arctic is the fastest‐warming region globally. Lake ice is a sentinel indicator of Arctic change, with wide impacts on hydrological regimes, biodiversity, and ecosystem services. While small lakes are ubiquitous across northern boreal and tundra zones, ice observations remain biased toward large lakes with distinct freezing and melting ...
Ludwig Strötz +4 more
wiley +1 more source