The purpose of the paper is to present existing and discuss modified optimization models and solution techniques which are suitable for engineering decision-making problems containing random elements with emphasis on two decision stages. The developed aproach is called two-stage stochastic programming and the paper links motivation, applicability, theoretical remarks, transformations, input data generation techniques, and selected decomposition algorithms for generalized class of engineering problems. The considered techniques have been found applicable by the experience of the authors in various areas of engineering problems. They have been applied to engineering design problems involving constraints based on differential equations to achieve reliable solutions. They have served for technological process control e.g. in melting, casting, and sustainable energy production. They have been used for industrial production technologies involving related logistics, as e.g. fixed interval scheduling under uncertainty. The paper originally introduces several recent improvements in the linked parts and it focuses on the unified two-stage stochastic programming approach to engineering problems in general. It utilizes authentic experience and ideas obtained in certain application areas and advises their fruitful utilization for other cases. The paper follows the paper published in 2000 which deals with the applicability of static stochastic programs to engineering design problems. Therefore, it refers to the basic concepts and notation introduced there and reviews only the principal ideas in the beginning. Then. it focuses on motivation of recourse concepts and two decision stages from engineering point of view. The principal models are introduced and selected theoretical features are reviewed. They are also accompanied by the discussion about difficulties caused by real-world cases. Scenario-based approach is detailed as the important one for the solution of engineering problems, discussion in data input generation is added together with model transformation remarks. Robust algorithms suitable for engineering problems involving nonlinearities and integer variable are selected and scenario-based decomposition is preferred. An original experience with using heuristics is shared. Several postprocessing remarks are added at the end of the paper, which is followed by an extensive literature review. and Obsahuje seznam literatury
Při analýze pohřebiště ze starší doby bronzové ve Vliněvsi (střední Čechy, okr. Mělník) byla zkoumána variabilita typů milodarů v hrobech různého pohlaví a věku. Krom jiného se ukázalo téměř výhradní zastoupení tyčinkových náramků v dětských hrobech. Rozborem všech dostupných nálezů tyčinkových náramků v hrobech únětické kultury v Čechách se tato vazba ukázala jako nenáhodná. Autoři diskutují hypotézu o spojení náramků s obdobím nedospělosti a s ním souvisejícími přechodovými rituály, případně ochrannou funkci těchto předmětů. and During an analysis of the Early Bronze Age burial site in Vliněves (central Bohemia, Mělník district), the variability of types of goods in graves of different sex and age was examined. Among other things, the study showed an almost exclusive representation of bar bracelets in the graves of juvenile individuals. An analysis of all available bar bracelet finds in Únětice culture graves in Bohemia suggested that this connection was not random. The authors discuss the hypothesis of the connection of the bracelets with the period of adolescence and related rites of passage, possibly the protective function of these artefacts.
This conference took place 3-7 March 2008 and was held in the Emauzy Abbey. ALICE is the acronym for A Large Ion Collider Experiment, one of the largest experiments in the world devoted to research in the physics of matter on an infinitely small scale. Hosted at CERN, this project involves the international collaboratin of more than 1000 physicists, engineers and technicians from 300 countries. Together they are contributing to the resolution of one of the latest challenges in fundamental physics recounting the birth of matter. and Michal Šumbera, Vojtěch Petráček, Petr Závada.
Brain Awareness Week this year featured lectures by leading Czech neuroscientists and other brain scientists. It was the Czech Republic´s 18th observance, held on March 14-18, 2016 at the Czech Academy of Sciences main building. This issue of the Academic Bulletin presents an article by Dr. Alexandr Chvátal of the Institute of Experimental Medicine fo the CAS on what is known about glial cells at present. According to the general opinion, the central nervous system (CNS), whose principal purpose is the acquisition, processing and storage of information and response to external stimuli, to mainly composed of neurons that provide all of this above-mentioned functions. In fact, many glial cells are also involved in these functions. The aim of this brief overview is to correct some misconceptions about glial cells and to summarize some new insights about their role in nervous tissue functions. Many of the results were obtained by researchers from the Institute of Experimental Medicine of the Czech Academy of Sciences. and Autorem je redakce uvedená zkratkou red
Týden s aplikovanou fyzikou FYKOSu je, jak název napovídá, týden, v jehož průběhu je snahou přiblížit středoškolákům jak aplikovanou fyziku a techniku ve výrobě, tak navštívit nějaká vědecká centra světové úrovně. Článek přináší reportáž z pohledu účastníka akce., Daniel Pitoňák, Karel Kolář., and Obsahuje bibliografii
Týden s aplikovanou fyzikou (zkráceně TSAF) [1] je akcí pořádanou MFF UK primárně pro středoškoláky se zájmem o fyziku. Její účastníci v roce 2014 navštívili dvě významná německá centra základního i aplikovaného výzkumu ve fyzice a jejích hraničních oborech, a to hamburský DESY a pak ASDEX Upgrade v Garchingu u Mnichova. Článek informuje čtenáře o průběhu této akce, která může být silným motivačním motorem pro další studium fyziky., Dominika Kalasová, Karel Kolář., and Obsahuje bibliografii
Celkem 20 středoškoláků ze všech koutů České i Slovenské republiky se zúčastnilo Týdne s aplikovanou fyzikou. Studenti měli v průběhu sedmi dní možnost dozvědět se spoustu nových informací a navštívit zajímavá experimentální pracoviště v Praze a okolí. and Pavla Rudolfová.