Results 81 to 90 of about 1,559,486 (311)

INVERSE VARIATIONAL INEQUALITIES AND SECOND-ORDER DYNAMICAL SYSTEMS

open access: yesTạp chí Khoa học Đại học Đà Lạt
We consider the inverse variational inequality problem in finite-dimensional space and study its associated second-order dynamical system. In particular, we propose a second-order dynamical system whose trajectory converges exponentially to the solution
Quoc Thanh Trinh
doaj   +1 more source

Qualitative properties of certain non-linear differential systems of second order

open access: yesJournal of Taibah University for Science, 2017
In this paper, we study the boundedness and square integrability of solutions in certain non-linear systems of differential equations of second order.
Cemil Tunç, Yavuz Dinç
doaj   +1 more source

On second order Hamiltonian systems [PDF]

open access: yes, 2006
summary:The aim of the paper is to announce some recent results concerning Hamiltonian theory. The case of second order Euler–Lagrange form non-affine in the second derivatives is studied.
Smetanová, Dana
core  

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Decreasing solutions of cyclic second-order difference systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
The existence and asymptotic behavior of positive decreasing solutions to the cyclic second-order nonlinear difference system \begin{equation*} \Delta(p_i(n)|\Delta x_i(n)|^{\alpha_i-1}\Delta x_i(n)) =q_i(n)|x_{i+1}(n+1)|^{\beta_i-1}x_{i+1}(n+1) , \quad ...
Aleksandra Kapesic, Jelena Manojlović
doaj   +1 more source

Estimation of Transfer Function Coefficients for Second-Order Systems via Metaheuristic Algorithms. [PDF]

open access: yesSensors (Basel), 2021
Rodríguez-Abreo O   +5 more
europepmc   +1 more source

Collocation methods for a class of second order initial value problems with oscillatory solutions [PDF]

open access: yes, 1993
We derive and analyse two families of multistep collocation methods for periodic initial-value problems of the form y" = f(x, y); y((^x)o) = yo, y(^1)(xo) = zo involving ordinary differential equations of second order in which the first derivative ...
Booth, Andrew S.
core  

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

二阶次线性碰撞系统的次调和解(Subharmonic solutions for sublinear second order systems with impacts)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2012
We prove that there are infinite subharmonic bouncing solutions of sublinear second order systems x″+f(t, x)=0 when f(t, x) satisfies suitable condition in the around of x = 0.
MIAOXue-qing(缪雪晴), DINGWei(丁卫)
doaj   +1 more source

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