Browsing by Subject "Problem solving"
Now showing items 120 of 54

Report
Algebraic and Geometric Approach in Function Problem Solving
(International Group for the Psychology of Mathematics Education, 2004)This study explores students algebraic and geometric approach in solving tasks in functions and the relation of these approaches with complex geometric problem solving. Data were obtained from 95 sophomore preservice ...

Conference Object
Applications of minimum principle for continuoustime partially observable risksensitive control problems
(IEEE, 1995)This paper employs the minimum principle derived in [1], for nonlinear partially observable exponential of integral control problems, to solve linearexponentialquadraticGaussian (LEQG) tracking problems using two different ...

Conference Object
Approximating optimal place sensor selection for structural observability in discrete event systems modeled by petri nets
(2007)In this paper, we study place sensor selection problems in Discrete Event Systems modeled by Petri nets with outputs (i.e., Petri nets with transition and place sensors). Our goal is to place a minimal number of sensors ...

Article
Are registers of representations and problem solving processes on functions compartmentalized in students' thinking?
(2006)The purpose of the present study is twofold: first, to review and summarize previous research on the compartmentalization of different registers of representations and problem solving approaches related to the concept of ...

Article
Assessing Student ProblemSolving Skills
(Structural Equation Modeling: A Multidisciplinary Journal, 2003)This study examines the construct validity of the Mathematical Patterns Test using data from 848 Cypriot primary school students. Descriptive analyses across 5 age groups suggested a developmental structure of individual ...

Conference Object
Capacity of gaussian channels with noise uncertainty
(2004)In this paper the problem of defining, and computing the capacity of a communication channel when the statistic of an additive noise is not fully known, is addressed. The communication channel is specified as a continuous ...

Article
Classes of nonlinear partially observable stochastic optimal control problems with explicit optimal control laws
(1998)This paper introduces certain nonlinear partially observable stochastic optimal control problems which are equivalent to completely observable control problems with finitedimensional state space. In some cases the optimal ...

Article
Computational assessment of distributed decomposition methods for stochastic linear programs
(1998)Incorporating uncertainty in optimization models gives rise to large, structured mathematical programs. Decomposition procedures are wellsuited for parallelization, thus providing a promising venue for solving large ...

Doctoral Thesis Open Access
Conceptual and representational understanding related to the concept of function: a comparative study between Cyprus and Italy
(Πανεπιστήμιο Κύπρου, Σχολή Κοινωνικών Επιστημών και Επιστημών Αγωγής / University of Cyprus, Faculty of Social Sciences and Education, 201012)Η έννοια της συνάρτησης είναι πολύ σημαντική στα μαθηματικά και τις εφαρμογές τους (Eisenberg, 1992). Η κατανόηση της έννοιας αυτής είναι ένα θέμα που συγκεντρώνει την προσοχή των εκπαιδευτικών αλλά και της μαθηματικής ...

Conference Object
Control of discretetime partiallyobserved jump linear systems over causal communication systems
(2006)We consider the problem of control of discretetime partiallyobserved jump linear system over a noisy causal communication channel. Necessary conditions for observability and stabilizability in probability and rth mean ...

Conference Object
A convex programming approach to the multiobjective H2/H∞ problem
(2002)In this paper, Banach space duality theory for the multiobjective H2/H∞ problem developed recently by the authors, is used to develop algorithms to solve this problem by approximately reducing the dual and predual ...

Conference Object
Designing stable inverters and state observers for switched linear systems with unknown inputs
(2006)We present a method for estimating the inputs and states in discretetime switched linear systems with unknown inputs. We first investigate the problem of system invertibility, which reconstructs the unknown inputs based ...

Conference Object
Discretetime stochastic minimax control of partially observable systems
(2001)This paper presents a sample path optimization technique, as an alternative to the ensample average in formulating and solving stochastic minimax dynamic games. The stochastic games are nonlinear, discretetime, and partially ...

Article
A dynamic stochastic programming model for international portfolio management
(2008)We develop a multistage stochastic programming model for international portfolio management in a dynamic setting. We model uncertainty in asset prices and exchange rates in terms of scenario trees that reflect the empirical ...

Article
A dynamic stochastic programming model for international portfolio management
(2008)We develop a multistage stochastic programming model for international portfolio management in a dynamic setting. We model uncertainty in asset prices and exchange rates in terms of scenario trees that reflect the empirical ...

Report
The Effects of Different Modes of Representation on Mathematical Problem Solving
(International Group for the Psychology of Mathematics Education, 2004)The main objective of this study is to investigate the role of four different modes of representation in mathematical problem solving (MPS), and more specifically to develop a model, which provides information about the ...

Book Chapter
An exploratory study about the role of epistemological beliefs and dispositions on learners' thinking about an illdefined issue in solo and duo problemsolving contexts
(Springer Science + Business Media, 2008)This chapter examines the relationship between epistemological beliefs and dispositions and their role on illdefined problem solving in solo and duo contexts. The results showed that different aspects of epistemological ...

Article
The Functions of Pictures in Problem Solving
(International Group for the Psychology of Mathematics Education, 2004)In the present study, we assert that pictures serve four functions in problem solving: decorative, representational, organizational and informational. We, therefore, investigate the effects of pictures based on their ...

Conference Object
Graphical inference methods for fault diagnosis based on information from unreliable sensors
(2006)In this paper, we study the application of decoding algorithms to the multiple fault diagnosis (MFD) problem. Prompted by the resemblance between graphical representations for MFD problems and parity check codes, we develop ...

Article
LES of the flow past a rectangular cylinder using the immersed boundary concept
(2003)Incompressible turbulent flow past a long square cylinder is investigated using large eddy simulations LES). Results are presented and compared with available experimental databases for a Reynolds number Red = 22 000. The ...