Number of found documents: 2139
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Balancing Exploitation and Exploration via Fully Probabilistic Design of Decision Policies
Kárný, Miroslav; Hůla, František
2018 - English
Adaptive decision making learns an environment model serving a design of a decision policy. The policy-generated actions influence both the acquired reward and the future knowledge. The optimal policy properly balances exploitation with exploration. The inherent dimensionality\ncurse of decision making under incomplete knowledge prevents the realisation of the optimal design. Keywords: Exploitation; Exploration; Bayesian estimation; Adaptive systems; Fully probabilistic design; Kullback-Leibler divergence; Decision policy; Markov decision process Fulltext is available at external website.
Balancing Exploitation and Exploration via Fully Probabilistic Design of Decision Policies

Adaptive decision making learns an environment model serving a design of a decision policy. The policy-generated actions influence both the acquired reward and the future knowledge. The optimal policy ...

Kárný, Miroslav; Hůla, František
Ústav teorie informace a automatizace, 2018

Does minimum wage affect workplace safety?
Hradil, Vít
2018 - English
Empirical evidence on the employment effects of minimum wage legislation suggests the possibility that firms react to increases in low-skilled labor costs driven by minimum wages\nby reducing investments in non-wage job aspects, which can mitigate the need for layoffs. Such adjustments may involve the worsening of workplace safety. To evaluate the hypothesis that increases in minimum wages result in a higher incidence of occupational injuries and illnesses, I use employer-level data from the United States and variation in state minimum wages during 1996-2013. The results suggest that states which increase their minimum wage experience an increase in the incidence of occupational injuries and illnesses. The effect appears stronger in industries that employ large numbers of low-wage workers, and those where the workforce is intensively exposed to health risks. Keywords: minimum wage; job safety; occupational injuries and illnesses Fulltext is available at external website.
Does minimum wage affect workplace safety?

Empirical evidence on the employment effects of minimum wage legislation suggests the possibility that firms react to increases in low-skilled labor costs driven by minimum wages\nby reducing ...

Hradil, Vít
Národohospodářský ústav, 2018

Validation of comprehensive energy management system based on cloud-sourced information
Nedoma, P.; Herda, Z.; Franc, Z.; Plíhal, Jiří
2018 - English
The main research activity was devoted to develop an application that would enable testing interface between OIKOS board (based on the AURIXTM) and the dissemination module represented by Skoda vehicle demonstrator through serial port RS232. The testing was based on sending the GPS coordinates to the OIKOS unit and receiving recommended speed profile for the given track. While dissemination unit has received GPS coordinates, AURIX chip has sent back messages with prediction of possible speed profile. Further tasks included verification other forms of transmission, such as Wi-Fi, Bluetooth, Ethernet.\n\n Keywords: OIKOS board; dissemination module; GPS Fulltext is available at external website.
Validation of comprehensive energy management system based on cloud-sourced information

The main research activity was devoted to develop an application that would enable testing interface between OIKOS board (based on the AURIXTM) and the dissemination module represented by Skoda ...

Nedoma, P.; Herda, Z.; Franc, Z.; Plíhal, Jiří
Ústav teorie informace a automatizace, 2018

Technical manual - collimator
Kredba, Jan; Steiger, Lukáš; Tomka, David; Václavík, Jan
2018 - English
The purpose of this document is to provide basic set of rules and instructions that allows using and maintaining of the NEOSTED collimator (COL).\nBe aware that it is not purpose of this document to provide detailed description of individual parts of the COL system. If necessary all the details and proper references can be found in [AD-2]. Keywords: collimator; NEOSTED; TOPTEC; optical testing; interferometry Available at various institutes of the ASCR
Technical manual - collimator

The purpose of this document is to provide basic set of rules and instructions that allows using and maintaining of the NEOSTED collimator (COL).\nBe aware that it is not purpose of this document to ...

Kredba, Jan; Steiger, Lukáš; Tomka, David; Václavík, Jan
Ústav fyziky plazmatu, 2018

Caught in the cycle: economic conditions at enrollment and labor market outcomes of college graduates
Bičáková, Alena; Cortes, G. M.; Mazza, J.
2018 - English
We find robust evidence that cohorts of graduates who enter college during worse economic\ntimes earn higher average wages than those who enter during better times. This difference is\nnot explained by differences in economic conditions at the time of college graduation, changes\nin _eld of study composition, or changes in selection into occupations or industries. Cohorts\nwho start college in bad times are not more positively selected based on their high-school\noutcomes, but they graduate with higher college grades, and earn higher wages conditional on\ntheir grades. Our results suggest that these cohorts exert more effort during their studies. Keywords: business cycle; higher education; cohort effects Fulltext is available at external website.
Caught in the cycle: economic conditions at enrollment and labor market outcomes of college graduates

We find robust evidence that cohorts of graduates who enter college during worse economic\ntimes earn higher average wages than those who enter during better times. This difference is\nnot explained ...

Bičáková, Alena; Cortes, G. M.; Mazza, J.
Národohospodářský ústav, 2018

Entrepreneurship in the information age: an empirical analysis of the European regions
Pleticha, Petr
2018 - English
Decelerating productivity in recent years raised questions about technology diffusion in the economy. This study focuses on one particular diffusion channel, entrepreneurship, and inspects the mechanics through which it interacts with digitalization. The composite indicator of digitalization is split into separate components which enables analyzing digitalization’s interplay with entrepreneurship as a dynamic process. Based on the econometric analysis of Eurostat regional data covering the period 2008-2015, I find significant links between digitalization and entrepreneurship. Specifically, digitalization is associated with an increase in the rate at which firms are created and with a decrease in their survival rate after 3 years. The paper demonstrates that the interaction is dynamic in its nature as the effects of initial stages of digitalization reverse or vanish in its later phases. A sectoral analysis shows the persistence of the results across industries.\nMoreover, there is evidence that professional, scientific and technical activities are especially sensitive towards digitalization, experiencing strong, yet short-term shock in the firms’ birth, death, and survival rates. Accounting for geographic variation reveals heterogeneity between regions but not large enough to affect the overall results. Keywords: digitalization; entrepreneurship; technology dissemination Available at various institutes of the ASCR
Entrepreneurship in the information age: an empirical analysis of the European regions

Decelerating productivity in recent years raised questions about technology diffusion in the economy. This study focuses on one particular diffusion channel, entrepreneurship, and inspects the ...

Pleticha, Petr
Národohospodářský ústav, 2018

Formation of market beliefs in the oil market
Anatolyev, Stanislav; Seleznev, S.; Selezneva, Veronika
2018 - English
We characterize formation of market beliefs in the oil market by providing a complete characterization of the market reaction to oil inventory surprises. We utilize the unique sequential nature of inventory announcements to identify inventory shocks. We estimate an AR-ARCH-MEM model of the joint dynamics of returns, return volatilities and trading volumes around the announcements using high frequency data on oil futures contracts. Our model (i) handles illiquidity of long maturity contracts by accounting for trading inactivity, (ii) captures time varying trading intensity, and (iii) allows for structural changes in the dynamics and responses to news over time. We show (i) uniform formation of expectations across oil futures contracts with different maturities, (ii) a strong negative relation between inventories surprises and re-turns, (iii) no effect on the term premium, which suggests that inventory shocks are always considered to be permanent, and (iv) di_erentiation in the reaction of volume by maturity. We demonstrate how our results can be used to test theories of oil price determination and contribute to the debate on the recent oil glut. Keywords: oil market; ultra high frequency data; trading intensity Fulltext is available at external website.
Formation of market beliefs in the oil market

We characterize formation of market beliefs in the oil market by providing a complete characterization of the market reaction to oil inventory surprises. We utilize the unique sequential nature of ...

Anatolyev, Stanislav; Seleznev, S.; Selezneva, Veronika
Národohospodářský ústav, 2018

Hydroacoustic assessment of the fish stock in Lake Balaton in 2017
Tušer, Michal; Muška, Milan
2018 - English
This report describes a study of open-water fish assemblage in Lake Balaton, Hungary, in 2017. The lake was acoustically surveyed using two horizontally-oriented 120 kHz transducers. The observed fish stock was assessed on the basis of fish sizes, abundance, biomass, and spatial distribution in the lake. Keywords: biomass; abundance; open-water distribution Available at various institutes of the ASCR
Hydroacoustic assessment of the fish stock in Lake Balaton in 2017

This report describes a study of open-water fish assemblage in Lake Balaton, Hungary, in 2017. The lake was acoustically surveyed using two horizontally-oriented 120 kHz transducers. The observed fish ...

Tušer, Michal; Muška, Milan
Biologické centrum, 2018

Collimator - test readiness review
Budasz, Jiří; Kaván, František; Kredba, Jan; Lédl, Vít; Mach, Marek; Pleštil, Jan; Psota, Pavel; Steiger, Lukáš; Tomka, David; Václavík, Jan; Veselý, Martin
2018 - English
This document describes the test procedure applicable to the overall functional test of the NEOSTED collimator.\nThe test to be performed according to this procedure are to demonstrate the compliance of the above item to the requirements specified in the applicable document as part of the overall verification program. The test results shall be collected in a Test Report. Keywords: collimator; PLC system; telescope; interferometry Available at various institutes of the ASCR
Collimator - test readiness review

This document describes the test procedure applicable to the overall functional test of the NEOSTED collimator.\nThe test to be performed according to this procedure are to demonstrate the compliance ...

Budasz, Jiří; Kaván, František; Kredba, Jan; Lédl, Vít; Mach, Marek; Pleštil, Jan; Psota, Pavel; Steiger, Lukáš; Tomka, David; Václavík, Jan; Veselý, Martin
Ústav fyziky plazmatu, 2018

Technical manual - neosted SOT test bench
Steiger, Lukáš
2018 - English
The purpose of this document is to provide basic set of rules and instructions that allows using and maintaining of the NEOSTED SOT test bench (BB).\nFurther detailed informations and proper references about individual parts of the BB system can be found in [AD-2, AD-3]. Keywords: test bench; optical testing; collimator; neosted Available at various institutes of the ASCR
Technical manual - neosted SOT test bench

The purpose of this document is to provide basic set of rules and instructions that allows using and maintaining of the NEOSTED SOT test bench (BB).\nFurther detailed informations and proper ...

Steiger, Lukáš
Ústav fyziky plazmatu, 2018

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