The tasks of the controller in a PWM power converter are to stabilize the system and to guarantee an almost constant output voltage in spite of the perturbations in the input voltage and in the output load. We propose to design the controller using Hoo control theory, via the solution of two algebraic Riccati equations. The almost optimal HOO controller is of the same order as the converter and...

With the growing deployment of cellular networks, operators have to devote significant manual effort to network management. As a result, Self-Organizing Networks (SONs) have become increasingly important in order to raise the level of automated operation in cellular technologies. In this context, Load Balancing (LB) and Handover Optimization (HOO) have been identified by industry as key self-or...

This paper describes the submission of the National University of Singapore (NUS) to the Helping Our Own (HOO) Pilot Shared Task. Our system targets spelling, article, and preposition errors in a sequential processing pipeline.

This paper describes our approach to participate on SemEval2016 Task12: Clinical TempEval. Our system was based on IBEnt, a framework to identify chemical entities and their relations in text using machine learning techniques. This system has two modules, one to identify chemical entities, and other to identify the pairs of entities that represent a chemical interaction in the same text. In thi...

Experimental studies by Shul'pin and co-workers have shown that vanadate anions in combination with pyrazine-2-carboxylic acid (PCA identical with pcaH) produce an exceptionally active complex that promotes the oxidation of alkanes and other organic molecules. Reaction of this complex with H2O2 releases HOO* free radicals and generates V(IV) species, which are capable of generating HO* radicals...

Various appro{lche.\· to the mixed Hd Hoo cOlI/rol problem {Ire propQ.\"ed in the literatllre. The .wlution is often obtained by means of classical techniques (i .e. soil'illg a Riuati problem) or by means of COli I'ex optimization procedures. With the aim to sYlllhesize (/ jixed-stfllclure cOli/roller for anullcerwill plalll. a global optimizmioll approach to a single-inplil singleoulpul (SISO...

Electrospray ionization (ESI) mass spectrometry (MS) and tandem mass spectrometry (MS/MS) were used to monitor the oxidation of phenol by a novel heterogeneous Fenton system based on a Fe(0)/Fe(3)O(4) composite and H(2)O(2). On-line ESI-MS(/MS) shows that this heterogeneous system promotes prompt oxidation of phenol to hydroquinone, which is subsequently oxidized to quinone, other cyclic poly-h...

This paper presents a simple and noniterative procedure for the computation of the exact value of the infimum in the standard Roo.optimal control with output feedback. The problem formulation is general and does not place any restrictions on the direct feedthrough terms between the control input and the controlled output variables, and between the disturbance input and the measurement output va...

This paper reports on our work in the HOO 2012 shared task. The task is to automatically detect, recognize and correct the errors in the use of prepositions and determiners in a set of given test documents in English. For that, we have developed a hybrid system of an n-gram statistical model along with some rule-based techniques. The system has been trained on the HOO shared task’s training dat...