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Geometrical sketches
Roubíček, Filip
The paper deals with the unusual mode of representation using forms of dramatization. Geometrical objects are personified in sketches and recognized on the basic of predictors in their speeches. Some examples of sketches where the geometrical solids and figures appear are presented.
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Working with texts in the teaching of geometry
Roubíček, Filip
The paper deals with the possibilities of using texts and cultivation of the pupil´s competence of working with texts in the teaching of geometry. Some pupil´s activities aimed to formation and interpretation of a geometrical description of a real object.
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Multiprocessor Randomized On-line Scheduling
Tichý, Tomáš
This paper studies randomized on-line non-preemptive scheduling in multiprocessor systems. In this problem each task is specified by its processing time andscheduled on any of $m$ identical processors. The objective is to minimize theexpected mekespan. We prove lemmas and theorems describing $sigma_m$-competitive randomized algorithms on $m$ processors. The main result is an........
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Online competitive algorithms for maximizing weighzed throughput of unit jobs. ITI Series 2003-172
Bartal, Y. ; Chin, F. Y. L. ; Chrobak, M. ; Fung, S. P. Y. ; Jawor, W. ; Lavi, R. ; Sgall, Jiří ; Tichý, Tomáš
We study an online buffer management problem for networks supporting Quality-of-Service (QoS) applications, equivalently as an online scheduling problem forunit-length jobs, where each job is specified by its release time, deadline, and a nonnegative weight (QoS value). The goal is to maximize the emph{weighted throughput}, that is the total weight of scheduled jobs.
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