PURPOSE Patients show variable responses to chemoradiotherapy (CRT), which is generally administered before surgery for locally advanced rectal cancer (LARC). The aim of this study was to identify molecular markers predictive of CRT responses by analysis of low-mass ions (LMIs) in serum of LARC patients. MATERIALS AND METHODS LMIs (< 1,000 m/z) in serum obtained before CRT from 73 LARC (cT3-4...

It is well known that some important classes of systems (e.g. inverted pendulums, oscillators, double integrators) that cannot be stabilized by a static output-feedback, may be stabilized by inserting an artificial time-delay in the feedback. Static output-feedback controllers have advantages over observerbased controllers in the presence of uncertainties in the system matrices and/or uncertain...

This paper considers the problem of H2 reduced order approximation for both continuous and discrete time MIMO systems. A heuristic algorithm is proposed that utilizes necessary and sufficient conditions expressed in terms of a set of LMIs and a matrix rank constraint, and the alternating projection method. Also a method of finding starting points is suggested. Three numerical examples are emplo...

The average consensus in directed network of multi-agent with both switching topology and time-varying delay is studied. An orthogonal matrix is introduced to change the initial system into a reduced dimensional system. Based on linear matrix inequalities (LMIs) technique, a sufficient condition about average consensus problem is proposed. A novel form in terms of LMIs is obtained via taking th...

This paper addresses the problem of model-based global stability analysis of discrete-time Takagi–Sugeno multiregional dynamic output controllers with static antiwindup filters. The presented analyses are reduced to the problem of a feasibility study of the Linear Matrix Inequalities (LMIs), derived based on Lyapunov stability theory. Two sets of LMIs are considered candidate derived from the c...

This paper discusses recent items of progress in understanding liquid-metal ion source (LMIS) behaviour, in the more general context of electrohydrodynamics. (1) Like the Taylor-Gilbert cone, the phenomenon of the vem conrracta has been known for several hundred years. It is argued that the cusp-on-a-cone shape of an operating LMIS is a similar phenomenon, except that the forces acting are elec...

In this paper, the problem of the stability analysis for a class of linear neutral systems with time-varying delay is investigated. Using the Lyapunov method, a delay-dependent sufficient condition for asymptotic stability of the systems in terms of linear matrix inequalities (LMIs) is presented. The LMIs can be easily solved by various convex optimization algorithms. AMS Mathematics Subject Cl...

The goal of this paper is to study model-free data-driven control evaluation and design strategies for discrete-time linear time-invariant systems, where the system model unknown. In particular, our main contribution twofold: 1) new state-input exploration data collection schemes from experiences; 2) matrix inequalities dynamic programming methods stabilization optimal problems. proposed theore...