Results 61 to 70 of about 549 (197)

Blubber Thickening Driven by UCP1 Inactivation: Insights from a Cetacean‐Like Transgenic Mouse Model

Integrative Zoology, EarlyView.
UCP1 inactivation of cetaceans in mice drives BAT whitening and iWAT hyperplasia, promoting fat accumulation for aquatic adaptation. Abstract Cetaceans possess thick blubber, a specialized adipose tissue essential for thermal insulation, a streamlined body form, energy storage, and buoyancy. However, the mechanisms that underpin this adaptation are not
Qian Zhang, Yuehua Wang, Hang Zhang, Guiping Xu, Shixia Xu, Guang Yang   +5 more
wiley   +1 more source

Learning Hamiltonian neural Koopman operator and simultaneously sustaining and discovering conservation laws

Physical Review Research
Accurately finding and predicting dynamics based on the observational data with noise perturbations is of paramount significance but still a major challenge presently.
Jingdong Zhang, Qunxi Zhu, Wei Lin
doaj   +1 more source

Koopman and Transfer Operator Techniques from the Perspective of Quantum Theory

26 ...
Dimitrios Giannakis, Michael Montgomery
openaire   +2 more sources

Two Roads to Koopman Operator Theory for Control: Infinite Input Sequences and Operator Families

CoRR
The Koopman operator, originally defined for dynamical systems without input, has inspired many applications in control. Yet, the theoretical foundations underpinning this progress in control remain underdeveloped. This paper investigates the theoretical structure and connections between two extensions of Koopman theory to control: (i) Koopman operator
Masih Haseli, Igor Mezic, Jorge Cortés 0001   +2 more
openaire   +3 more sources

Running towards: Labour market incentives for runaway slaves in the British Cape Colony, 1830–1838

Asia‐Pacific Economic History Review, EarlyView.
Abstract Recent scholarship on slave escapes has increasingly emphasised economic motivation, but few studies have empirically investigated how market incentives influenced the decision‐making of enslaved individuals during transitions from coerced to wage labour.
Karl Bergemann, Gabriel Brown, Johan Fourie   +2 more
wiley   +1 more source

Modeling, simulation, and control of soft robots using Koopman operator theory

, 2023
In nature, animals with soft body parts can control their parts to different shapes, e.g., an elephant trunk can wrap on a tree branch to pick it up. But most research on manipulators only focuses on how to control the end effector, partly because the arm of the manipulator is rigidly articulated.
Singh, Ajai, author, Chong, Edwin K. P., advisor, Zhao, Jianguo, committee member, Pasricha, Sudeep, committee member   +3 more
openaire   +1 more source

Pericapsular nerve group block with phenol for non‐operative hip fracture management in patients living with frailty: a prospective multicentre cohort study

Anaesthesia, EarlyView.
Summary Introduction The incidence of hip fractures is rising with the ageing population. For patients living with severe frailty and limited life expectancy, non‐operative management is increasingly considered after shared decision‐making. Given the limited availability of long‐term analgesic options, alternative techniques are needed.
Rachel J. H. Smits, Marte I. Lommerse, Hugo H. Wijnen, Lennart G. Wasmoeth, Glenn van de Vossenberg, Gezina T. M. L. Oei, Henk J. Schuijt, Kris C. P. Vissers, Hanna C. Willems, Jan Willem Kallewaard, Selina E. I. van der Wal, the Dutch‐PENG registry collaborators, Gert R. Roukema, Dawi Van der Stap, J.S.H.A. (Seppe) Koopman, Bart P.A. Spaetgens, Renée Brüggemann, Nicole Lefel, Manon Vugts, Nikki M.F. Noorda, Vincent Van Dongen, Hidde Krot, Nicole Grupa, Daisy Hoofwijk, Léon Timmerman   +24 more
wiley   +1 more source

On the Potential of Reduced Order Models for Wind Farm Control: A Koopman Dynamic Mode Decomposition Approach

Energies, 2020
The high dimensions and governing non-linear dynamics in wind farm systems make the design of numerical optimal controllers computationally expensive.
Nassir Cassamo, Jan-Willem van Wingerden
doaj   +1 more source

A balance between stability and flexibility: Adaptive patterns of self‐regulated learning processes shape game‐based learning

British Journal of Educational Technology, EarlyView.
Abstract To ensure learning efficiency in game‐based learning (GBL), learners must regulate cognitive, affective, metacognitive and motivational (CAMM) processes, collectively known as self‐regulated learning (SRL). SRL is dynamic and non‐linear, characterized by regulatory patterns and CAMM interactions that lead to macro‐level SRL behaviours. In this
Elizabeth B. Cloude, Stefan E. Huber, Jingwei Wei, Bianca Esmanhoto, Muhterem Dindar, Manuel Ninaus, Kristian Kiili   +6 more
wiley   +1 more source

On Prigogine's approaches to irreversibility: a case study by the baker map

Discrete Dynamics in Nature and Society, 2004
The baker map is investigated by two different theories of irreversibility by Prigogine and his colleagues, namely, the Λ-transformation and complex spectral theories, and their structures are compared.
S. Tasaki
doaj   +1 more source