Belawan II is located in Medan District – North Sumatra, which often experiences tidal floods. The low ground level, the use of pump wells as a source clean water, behavior throwing garbage into river and poor drainage conditions make flooding uncontrollable, including in. potential increase threat has an impact on increasing vulnerability people's lives livelihoods. But other hand, local leade...

Purpose To describe a case of sudden onset of nystagmus in a pregnant patient with hyperemesis gravidarum. Observations Sixteen days after onset of persistent nausea and uncontrollable vomiting, a 12 week pregnant woman presented up-beating nystagmus, mild memory impairment and reduced sensitivity in the lower limbs. Laboratory tests presented thiamine deficiency and magnetic resonance imagin...

In this paper we are interested in non-monotonic extensions of Bengt Hansson’s standard dyadic deontic logic 3, known as DSDL3. We study specificity principles for DSDL3 with both controllable and uncontrollable propositions. We introduce an algorithm for minimal specificity which not only covers obligations but also permissions, and we discuss the distinction between weak and strong permission...

In this paper, an automated motion planner is proposed for coordinating collisionfree motions among dynamic moving objects or machines in a 3D space. Based on the concept of modified path-velocity decomposition, an algorithm is proposed for evaluating the performance of different motion strategies. As a result, the motion planner will coordinate collision-free motions for multiple uncontrollabl...

This paper introduces a method to model multi-robot teams using stochastic discrete event system techniques. The environment state space and robot behaviours are discretised and modelled by modular finite state automata (FSA). Then, all the FSA are composed to obtain the complete model of the team situated in its environment. Controllable and uncontrollable events are identified. Exponential di...

This paper describes a computationally efficient method for synthesizing feedback controllers for plants modeled by Petri nets which may contain uncontrollable transitions. The controller, a Petri net itself, enforces a set of linear constraints on the plant. The original set of plant behavioral constraints is transformed to yield a controller which enforces the original constraints without inf...

The bounded-real and positive-real lemmas solve two important linear-quadratic optimal control problems related to the concepts of non-expansive and passive systems, respectively. The lemmas assume controllability, yet a non-expansive or passive system can be uncontrollable. In this paper, we solve these optimal control problems without assuming controllability. We obtain necessary and sufficie...

Linear multi-input dynamical systems smoothly depending on parameters are considered. A set of parameter values corresponding to uncontrollable systems (an uncontrollability set) is studied. The typical (generic) structure of the uncontrollability set is described. A constructive method of perturbation analysis of the uncontrollability set is developed. Formulae of first-order approximations fo...

For nonlinear control systems with uncontrollable linearization around an equilibrium, the local asymptotic stability of the linear controllable directions can be easily achieved by linear feedback. Therefore we expect that the stabilizability of the whole system should depend on a reduced order model whose stabilizability depends on the linearly uncontrollable directions. The controlled center...