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(Ne)zájem žáků o učitelskou profesi: mezinárodní srovnání
Federičová, Miroslava
2024 - Czech
Mnoho evropských zemí včetně Česka se v současnosti potýká s nedostatkem učitelů, těch kvalitních obzvlášť. Jedním z řešení je podpora učitelských profesních aspirací už u mladých během jejich studia na základní a střední škole. Tato studie empiricky mapuje učitelské aspirace v evropských zemích mezi 15letými žáky na základě dat z mezinárodního šetření PISA. Many European countries, including the Czech Republic, currently face a shortage of teachers, especially quality teachers. One possible solution to this would be to support aspiring teachers at a younger age, during their studies at primary and secondary school. This study provides an empirical overview of teaching aspirations among 15-year-old school pupils in European countries based on data from the international PISA survey.
Keywords:
teachers; teaching aspirations; international comparison
Fulltext is available at external website.
(Ne)zájem žáků o učitelskou profesi: mezinárodní srovnání
Mnoho evropských zemí včetně Česka se v současnosti potýká s nedostatkem učitelů, těch kvalitních obzvlášť. Jedním z řešení je podpora učitelských profesních aspirací už u mladých během jejich studia ...
Matching to suppliers in the production network: an empirical framework
Alfaro-Ureña, A.; Zacchia, Paolo
2024 - English
This paper develops a framework for the empirical analysis of the determinants of input supplier choice on the extensive margin using firm-to-firm transaction data. Building on a theoretical model of production network formation, we characterize the assumptions that enable a transformation of the multinomial logit likelihood function from which the seller fixed effects, which encode the seller marginal costs, vanish. This transformation conditions, for each subnetwork restricted to one supplier industry, on the out-degree of sellers (a sufficient statistic for the seller fixed effect) and the in-degree of buyers (which is pinned down by technology and by “make-or-buy” decisions). This approach delivers a consistent estimator for the effect of dyadic explanatory variables, which in our model are interpreted as matching frictions, on the supplier choice probability. The estimator is easy to implement and in Monte Carlo simulations it outperforms alternatives based on group fixed effects. In an empirical application about the effect of a major Costa Rican infrastructural project on firm-to-firm connections, our approach yields estimates typically much smaller in magnitude than those from naive multinomial logit.
Keywords:
production network; supplier choice; conditional logit
Fulltext is available at external website.
Matching to suppliers in the production network: an empirical framework
This paper develops a framework for the empirical analysis of the determinants of input supplier choice on the extensive margin using firm-to-firm transaction data. Building on a theoretical model of ...
Disappearing stepping stones: technological change and career paths
Kashkarov, Daniil; Artemev, V.
2024 - English
Which career paths lead workers towards high-skilled non-routine cognitive occupations? Using PSID data, we show that, for a significant share of workers, a career path towards non-routine cognitive occupations goes through middle-skilled routine occupations, with the majority going through a subset of routine cognitive occupations. We then argue that the decline in employment in routine cognitive occupations due to routine-biased technological change can negatively affect the chances of younger cohorts joining high-skilled occupations. To test this hypothesis, we develop a structural occupational choice model that endogenously generates realistic career paths and estimate it using PSID data and job ad data from three major US outlets covering the period from 1940 to 2000. Our estimations suggest that, on average, 6% of workers ending up in non-routine cognitive occupations use routine cognitive occupations as stepping stones that allow them to maintain and accumulate human capital and experience relevant for later employment in high-skilled occupations. A fall in employment opportunities in routine cognitive occupations over the period of the most intensive routine-biased technological change led to at least 1.37 million lost high-skilled workers who got stuck in less skilled occupations.
Keywords:
routine-biased technological change; occupational choice; human capital
Fulltext is available at external website.
Disappearing stepping stones: technological change and career paths
Which career paths lead workers towards high-skilled non-routine cognitive occupations? Using PSID data, we show that, for a significant share of workers, a career path towards non-routine cognitive ...
Rizika reformy doktorského studia
Grosman, Jiří; Jurajda, Štěpán; Münich, Daniel
2024 - Czech
Systém financování doktorského studia v České republice je dlouhodobě neefektivní. Dokončovaná reforma má za cíl efektivitu systému výrazně zvýšit. V tomto krátkém textu upozorňujeme na potenciální problémy spojené s rozdělováním veřejné finanční podpory doktorského studia mezi vysoké školy. Problematické by bylo rozdělování podpory založené dominantně na míře úspěšného dokončování studií. Alokace veřejné podpory doktorského studia by vedle opodstatněných národních oborových priorit měla zohledňovat výsledky hodnocení kvality vědy na vysokých školách a úspěšnost v kariérním umisťování absolventů. The system of financing doctoral studies in the Czech Republic has long been inefficient. A reform currently underway aims to significantly increase the efficiency of the system. In this short text, we draw attention to potential problems associated with the distribution of public financial support for doctoral studies among universities. It would be problematic to distribute support based predominantly on degree completion rates. Allocation of public support for doctoral studies should take into account the results of evaluations of the quality of science produced by universities and their success in career placement of graduates, in addition to justifiable national disciplinary priorities.
Keywords:
doctoral studies; public financial support; Czech Republic
Fulltext is available at external website.
Rizika reformy doktorského studia
Systém financování doktorského studia v České republice je dlouhodobě neefektivní. Dokončovaná reforma má za cíl efektivitu systému výrazně zvýšit. V tomto krátkém textu upozorňujeme na potenciální ...
Financial skills and search in the mortgage market
Cota, Marta; Šterc, Ante
2024 - English
Are households with low financial skills disadvantaged in the mortgage market? Using stochastic record linking, we construct a unique U.S. dataset encompassing a rich set of mortgage details and borrowers’ characteristics, including their objective financial literacy measure. We find that households with low financial literacy are up to 4% more likely to search less and lock in at 15-20 b.p. higher rates. Upon origination, unskilled borrowers face a 35-45% higher mortgage delinquency and end up with a 30% lower likelihood of refinancing. Overall, for a $100,000 loan, the potential losses from low financial literacy are more than $9,329 over the mortgage duration. To understand how financial education, more accessible mortgages, or mortgage rate changes affect households with low financial literacy, we formulate and calibrate a mortgage search model with heterogeneous search frictions and endogenous financial skills. Our model estimates show that search intensity and financial skill variations contribute to 55% and 10% of mortgage rate variations, respectively. We find that i) more accessible mortgages lead to a higher delinquency risk among low-skilled households, ii) financial education mitigates the adverse effects of increased accessibility, and iii) low mortgage rates favor high-skilled homeowners and, by reinforcing refinancing activity, deepen consumption differences across different financial skill levels.
Keywords:
mortgage refinancing; mortgage search; financial skills
Fulltext is available at external website.
Financial skills and search in the mortgage market
Are households with low financial skills disadvantaged in the mortgage market? Using stochastic record linking, we construct a unique U.S. dataset encompassing a rich set of mortgage details and ...
Some modifications of the limited-memory variable metric optimization methods
Vlček, Jan; Lukšan, Ladislav
2023 - English
Several modifications of the limited-memory variable metric (or quasi-Newton) line search methods for large scale unconstrained optimization are investigated. First the block version of the symmetric rank-one (SR1) update formula is derived in a similar way as for the block BFGS update in Vlˇcek and Lukˇsan (Numerical Algorithms 2019). The block SR1 formula is then modified to obtain an update which can reduce the required number of arithmetic operations per iteration. Since it usually violates the corresponding secant conditions, this update is combined with the shifting investigated in Vlˇcek and Lukˇsan (J. Comput. Appl. Math. 2006). Moreover, a new efficient way how to realize the limited-memory shifted BFGS method is proposed. For a class of methods based on the generalized shifted economy BFGS update, global convergence is established. A numerical comparison with the standard L-BFGS and BNS methods is given.
Keywords:
unconstrained minimization; variable metric methods; limited-memory methods; variationally derived methods; arithmetic operations reduction; global convergence
Available in a digital repository NRGL
Some modifications of the limited-memory variable metric optimization methods
Several modifications of the limited-memory variable metric (or quasi-Newton) line search methods for large scale unconstrained optimization are investigated. First the block version of the symmetric ...
Hodnocení působení Miloše Zemana v prezidentském úřadě – únor/březen 2023
Červenka, Jan
2023 - Czech
V šetření realizovaném v únoru a v březnu 2023 se Centrum pro výzkum veřejného mínění SOU AV ČR, v.v.i., zaměřilo na hodnocení působení Miloše Zemana v prezidentském úřadě podle šesti vybraných kritérií.\nVe všech zkoumaných oblastech převažovalo kritické hodnocení nad pozitivním.\nRelativně nejpříznivěji česká veřejnost hodnotila, jak plnil funkce svěřené mu ústavou (40 %) a jak byl v kontaktu s občany a znal jejich problémy (39 %).\nNejvíce kritičtí byli čeští občané k tomu, jak dosluhující prezident dbal o vážnost a důstojnost svého úřadu (73 %) a jak působil jako autorita u občanů (71 %).\nV porovnání s rokem 2020 se hodnocení prezidenta zhoršilo ve všech sledovaných položkách.\nV porovnání s předchozími prezidenty Václavem Havlem a Václavem Klausem v období na konci jejich působení hodnotili občané u Miloše Zemana lépe, jak byl v kontaktu s občany a znal jejich problémy. U ostatních položek jeho aktuální hodnocení vyznívá kritičtěji. In its regular survey in February and March 2023 the Public Opinion Research Centre focused on questions about the Miloš Zeman's presidency.\nIn all areas examined, critical evaluations prevailed over positive ones.\nRelatively most favorably, the Czech public rated how he performed the functions entrusted to him by the constitution (40%) and how he was in contact with citizens and knew their problems (39%).\nCzech citizens were the most critical of how the outgoing president took care of the seriousness and dignity of his office (73%) and how he acted as an authority among citizens (71%).\nCompared to 2020, the president's rating worsened in all monitored items.\nCompared to the previous presidents Václav Havel and Václav Klaus in the period at the end of their tenure, citizens rated Miloš Zeman better in that how he was in contact with citizens and knew their problems. For other items, his current assessment sounds more critical.
Keywords:
public opinion; President; Miloš Zeman; evaluations
Fulltext is available at external website.
Hodnocení působení Miloše Zemana v prezidentském úřadě – únor/březen 2023
V šetření realizovaném v únoru a v březnu 2023 se Centrum pro výzkum veřejného mínění SOU AV ČR, v.v.i., zaměřilo na hodnocení působení Miloše Zemana v prezidentském úřadě podle šesti vybraných ...
GA 19-07635S: Outputs and Results
Rehák, Branislav
2023 - English
This manuscript aims to deliver a survey of results obtained during the solution of the project No. GA19-07635S of the Czech Science Foundation. The timespan dedicated to the work on this project was 1.3.2019 - 30.6.2022. The main area dealt with were\nnonlinear multi-agent systems and their synchronization, further, attention was paid to some auxiliary results in the area of nonlinear observers. This Report briefly introduces the Project, provides a summary of the results obtained and also sketches an outline how these results will be applied and extended in future.
Keywords:
multi-agent systems; nonlinear multi-agent systems; synchronization
Fulltext is available at external website.
GA 19-07635S: Outputs and Results
This manuscript aims to deliver a survey of results obtained during the solution of the project No. GA19-07635S of the Czech Science Foundation. The timespan dedicated to the work on this project was ...
SMV-2023-50: Vývoj ovladačů pro rychlé generování hologramů
Jákl, Petr; Šerý, Mojmír
2023 - Czech
Vývoj softwarového balíku pro rychlé generování hologramů ve skriptovacím prostředí Python a v jazyce C/C++. Software umožňuje vytvoření více fokusů v ohniskové rovině a generování optického víru na čistě fázovém prostorovém modulátoru světla. Development of a software package for fast hologram generation in Python scripting environment and C/C++. The software allows for the creation of multiple foci in the focal plane and the generation of optical vortices on a pure phase spatial light modulator.
Keywords:
spatial light modulator; phase hologram
Available at various institutes of the ASCR
SMV-2023-50: Vývoj ovladačů pro rychlé generování hologramů
Vývoj softwarového balíku pro rychlé generování hologramů ve skriptovacím prostředí Python a v jazyce C/C++. Software umožňuje vytvoření více fokusů v ohniskové rovině a generování optického víru na ...
SMV-2023-54: EM Hlístice II 2023
Hrubanová, Kamila
2023 - Czech
Cílem smluvního výzkumu byla odborná analýza biologických vzorků se záměrem popsat morfologické znaky pro druhovou klasifikaci. Součástí spolupráce byla provedena chemická příprava vzorků, následovalo pozorování těl samotných hlístic v různých pozicích tak, aby bylo možné rozlišit jednotlivé morfologické znaky pomocí elektronového mikroskopu. The aim of the contract research was the expert analysis of biological samples with the intention of describing morphological features for species classification. As part of the collaboration, chemical preparation of the samples was carried out, followed by observation of the bodies of the nematodes themselves in different positions so that individual morphological characters could be distinguished using an electron microscope.
Keywords:
nematodes; electron microscopy; morphological characterization
Available at various institutes of the ASCR
SMV-2023-54: EM Hlístice II 2023
Cílem smluvního výzkumu byla odborná analýza biologických vzorků se záměrem popsat morfologické znaky pro druhovou klasifikaci. Součástí spolupráce byla provedena chemická příprava vzorků, následovalo ...
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