Results 31 to 40 of about 114,884,693 (164)

Transitional Characteristics of Phase Shift in Lock-in Phenomena of an Oscillating Cylinder

Journal of Fluid Science and Technology, 2009
In this study, characteristics of phase lag between displacement of forcibly oscillating test body and velocity fluctuation caused by vortex formation behind the test body were investigated.
Hiroyuki HANIU, Sangil KIM, Katsumi MIYAKOSHI, Kazunori TAKAI, Mohammad Rofiqul ISLAM   +4 more
doaj   +1 more source

Understanding the Influence of Wake Cavitation on the Dynamic Response of Hydraulic Profiles under Lock-In Conditions

Energies, 2021
To accelerate the integration of fluctuating renewable energy technologies in the power systems, it is necessary to increase the flexibility of hydropower by operating turbines at off-design conditions.
Rafel Roig, Jian Chen, Oscar de la Torre, Xavier Escaler   +3 more
doaj   +1 more source

On Flickering, Tipping Points, Trajectories, Transitions, Transformations, Regime Shifts, and Resiliences in Tourism: Why Resilient Does Not Mean Better and Why Change is Not Always Sustainable

Via@
The concepts of transition, transformation, tipping points, and resilience have gained currency in recent years given the impacts of crisis events on tourism.
C. Michael Hall
doaj   +1 more source

Vortex-induced vibration of two elastically connected bodies: experimental verification of lock-in to multiple eigenmodes

Journal of Fluid Science and Technology, 2017
This study examines experimentally the vortex-induced vibration (VIV) of a mechanical system with two eigenmodes. A previous experiment setup was refined to enable the experiment, and was placed in a circulating water channel to submerge a movable ...
Yoshiki NISHI, Komei SAITOH
doaj   +1 more source

Vortex-Induced Vibrations of a 2DOF Rigid Cylinder with Hard Marine Growth in Turbulent Oscillatory Flow

Fluids
This paper presents a numerical investigation into the vortex-induced vibrations (VIV) of a smooth and a marine-fouled circular cylinder with two degrees of freedom (2DOF), subjected to a turbulent oscillatory flow.
Henry Francis Annapeh, Victoria Kurushina   +1 more
doaj   +1 more source

Pulses for Sustainability: Breaking Agriculture and Food Sectors Out of Lock-In

Frontiers in Sustainable Food Systems, 2018
Crop diversification can improve the sustainability of Western agriculture. In particular, pulses are crops that can help both agriculture and the food industry become more ecological, as they reduce greenhouse gas emissions and help reduce animal-based ...
Marie-Benoit Magrini, Marc Anton, Jean-Michel Chardigny, Gerard Duc, Michel Duru, Marie-Helene Jeuffroy, Jean-Marc Meynard, Valerie Micard, Stephane Walrand   +8 more
doaj   +1 more source

Infrared Lock-in Thermography Tests with Optical Feedback

U.Porto Journal of Engineering, 2022
Thermography using a period light stimulation. However, the results are highly dependent on the accuracy of the stimulation source and its dynamic response.
António José Ramos Silva, Mário Vaz, Sofia Leite, Joaquim Mendes   +3 more
doaj   +1 more source

Disrupting the status quo: a sustainability transitions analysis of the fashion system

Sustainability: Science, Practice, & Policy, 2022
The fashion industry has developed into a complex global system with persistent social and environmental sustainability challenges. Private, public, and civil society actors have condemned these persistent problems and called for system change toward ...
Sophie Buchel, Aniek Hebinck, Mariangela Lavanga, Derk Loorbach   +3 more
doaj   +1 more source

Viewpoint – Pouring money down the drain: Can we break the habit by reconceiving wastes as resources?

Water Alternatives, 2018
As water-sector professionals re-discover the value in the 'waste' conveyed in 'waste'water, this Viewpoint argues that the theory of plural rationality (also known as Cultural Theory) may accelerate the switch from waste management to resource recovery.
Michael Bruce Beck, Michael Thompson, Dipak Gyawali, Simon Langan, JoAnne Linnerooth-Bayer   +4 more
doaj  

Lock-in-detection dual-comb spectroscopy

, 2019
Dual-comb spectroscopy (DCS) is useful for gas spectroscopy due to high potential of optical frequency comb (OFC). However, fast Fourier transform (FFT) calculation of a huge amount of temporal data spends significantly longer time than the acquisition ...
Takeo Minamikawa (736240), Akifumi Asahara (5134856), Yasuhiro Mizutani (677701), Kaoru Minoshima (3976985), Kyuki Shibuya (5134844), Masatomo Yamagiwa (3972866), Ryo Oe (14415564), Tetsuo Iwata (677702), Hirotsugu Yamamoto (3982970), Takahiko Mizuno (5134847), Hidenori Koresawa (7822250), Takeshi Yasui (387985)   +11 more
core   +1 more source