International Journal of Adaptive Control and Signal Processing, EarlyView., 2023 Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley +1 more source
Planktonic communities and chaotic advection in dynamical models of Langmuir circulation [PDF]
, 1998 A deterministic mechanism for the production of plankton patches within a typical medium scale oceanic structure is proposed and investigated. By direct numerical simulation of a simple model of Langmuir circulation we quantify the effects of unsteady ...
Bees, M.A.
core +1 more source
A tale of three taxes: photo-gyro-gravitactic bioconvection [PDF]
, 2011 The term bioconvection encapsulates the intricate patterns in concentration, due to hydrodynamic instabilities, that may arise in suspensions of non-neutrally buoyant, biased swimming microorganisms. The directional bias may be due to light (phototaxis),
Bees, M., Williams, C.R.
core +1 more source
Non-linear bioconvection in a deep suspension of gyrotactic swimming micro-organisms [PDF]
, 1999 The non-linear structure of deep, stochastic, gyrotactic bioconvection is explored. A linear analysis is reviewed and a weakly non-linear analysis justifies its application by revealing the supercritical nature of the bifurcation. An asymptotic expansion
Bees, M., Hill, N.
core +2 more sources
The orientation of swimming bi-flagellates in shear flows [PDF]
, 2012 Biflagellated algae swim in mean directions that are governed by their environments. For example, many algae can swim upward on average (gravitaxis) and toward downwelling fluid (gyrotaxis) via a variety of mechanisms.
Bees, M.A., O'Malley, S.
core +1 more source
Visual diagnosis of the Varroa destructor parasitic mite in honeybees using object detector techniques [PDF]
Sensors, 21-8 (2021), 2764-2780, 2021 The Varroa destructor mite is one of the most dangerous Honey Bee (Apis mellifera) parasites worldwide and the bee colonies have to be regularly monitored in order to control its spread. Here we present an object detector based method for health state monitoring of bee colonies. This method has the potential for online measurement and processing.
arxiv +1 more source
Analytical approximations for the orientation distribution of small dipolar particles in steady shear flows [PDF]
, 1998 Analytic approximations are obtained to solutions of the steady Fokker-Planck equation describing the probability density functions for the orientation of dipolar particles in a steady, low-Reynolds-number shear flow and a uniform external field.
Bees, M.A., Hill, N., Pedley, T.J.
core +1 more source
The interaction of thin-film flow, bacterial swarming and cell differentiation in colonies of Serratia liquefaciens [PDF]
, 2000 The rate of expansion of bacterial colonies of S. liquefaciens is investigated in terms of a mathematical model that combines biological as well as hydrodynamic processes. The relative importance of cell differentiation and production of an extracellular
Andresen, P. +3 more
core +1 more source
Waggle dance distances as integrative indicators of seasonal foraging challenges [PDF]
, 2014 Even as demand for their services increases, honey bees (Apis mellifera) and other pollinating insects continue to decline in Europe and North America.
Couvillon, Margaret J +2 more
core +6 more sources
A strong immune response in young adult honeybees masks their increased susceptibility to infection compared to older bees [PDF]
, 2012 Honeybees, Apis mellifera, show age-related division of labor in which young adults perform maintenance ("housekeeping") tasks inside the colony before switching to outside foraging at approximately 23 days old. Disease resistance is an important feature
Baxter, Laura +8 more
core +4 more sources