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The heterogeneous consequences of reduced labor costs on firm productivity
Del Prato, F.; Zacchia, Paolo
2024 - English
We document how a reduction in labor costs led to heterogeneous effects on the total factor productivity (TFP) of manufacturing firms. Leveraging an Italian labor legislation reform and unique institutional features of the local collective bargaining system, we show that such effects vary along the TFP distribution. Relative to the counterfactual, TFP markedly declines on the left tail, which we explain via selection mechanisms, on the right, TFP mildly increases as firms are able to expand and reallocate their workforce. To guide the evaluation of welfare implications, we develop a general equilibrium model featuring firm selection and frictions in input markets.
Keywords:
labor costs; productivity; collective bargaining
Fulltext is available at external website.
The heterogeneous consequences of reduced labor costs on firm productivity
We document how a reduction in labor costs led to heterogeneous effects on the total factor productivity (TFP) of manufacturing firms. Leveraging an Italian labor legislation reform and unique ...
Growth and Phosphorus Dynamics During Tolypothrix tenuis Cultivation – a Cyanobacterium of Biotechnological Potential
Mušálková, Petra
2024 - English
Here I investigated the course of biomass growth, phosphorus uptake and changes in intracellular phosphorus content in T. tenuis in a batch cultivation. Cultivation experiment was held in multiple bubble columns during a light regime (alternating light and dark periods 16 and 8h). Thanks to this experiment I was able to obtain a growth curve of T. tenuis. The decrease of phosphorus concentration in the medium was disproportionally faster\nthan biomass growth resulting in significant oscillations of phosphorus content in the biomass, which are typical characteristics for LPU. It was also observed, that after all phosphorus was removed from the medium, the algae growth continues over time, while obviously utilizing intracellular phosphorus reserves. These findings are valuable in course of using this cyanobacterium for efficient bioremediation of eutrophic water based on phosphorus removal by targeted algae cultivation.
Available in a digital repository NRGL
Growth and Phosphorus Dynamics During Tolypothrix tenuis Cultivation – a Cyanobacterium of Biotechnological Potential
Here I investigated the course of biomass growth, phosphorus uptake and changes in intracellular phosphorus content in T. tenuis in a batch cultivation. Cultivation experiment was held in multiple ...
Influence of Material Properties and Mixing Dynamics on Heat Transport in Granular Materials
Kokavcová, Anna
2024 - English
This study evaluates the effect of rotational speed on heat transfer and analyzes particle motion at different stirrer rotational frequencies to understand how primary and secondary flows affect heat transfer efficiency. It also examines the effect of Young’s modulus on heat transfer at different agitator\noperating speeds. Key simulation parameters and their influence 33 on heat transfer efficiency are detailed to improve the reproducibility and applicability of the results.
Keywords:
granular mixing; heat transfer; DEM
Available in digital repository of the ASCR
Influence of Material Properties and Mixing Dynamics on Heat Transport in Granular Materials
This study evaluates the effect of rotational speed on heat transfer and analyzes particle motion at different stirrer rotational frequencies to understand how primary and secondary flows affect heat ...
Podnikání během pandemie a krize v kontextu genderových nerovností. Policy brief
Švarcová, Markéta; Pospíšilová, Marie
2024 - Czech
Zda lze vnímat pandemii jako příležitost pro snížení genderové nerovnosti v podnikání bylo hlavní otázkou participativního workshopu, který jsme uspořádaly v Sociologickém ústavu 13. 3. 2024. Diskuze v rámci participativního workshopu byla zaměřena na bariéry, kterým čelí ženy podnikatelky, na nástroje, které mohou využívat pro jejich překonání, na zavedení ošetřovného pro podnikající a dostupnost a využitelnost dat členěných dle pohlaví. Tento policy brief zaznamenává názory relevantních stakeholderů v oblasti podnikání na téma odstraňování genderových nerovností v podnikatelském prostředí, které v rámci workshopu zazněly. Whether the pandemic can be perceived as an opportunity to reduce gender inequality in entrepreneurship was the main question of the participatory workshop that we organized at the Institute of Sociology on March 13, 2024. The discussion during the participatory workshop focused on the barriers that women entrepreneurs face, the tools they can use to overcome them, the introduction of a attendance allowance for entrepreneurs, and the availability and usability of gender-disaggregated data. This policy brief write down the views of relevant stakeholders in the business sector on the topic of eliminating gender inequalities in the entrepreneurship that were expressed during the workshop.
Keywords:
Entrepreneuship; gender; data; attendance allowance; barriers
Available in digital repository of the ASCR
Podnikání během pandemie a krize v kontextu genderových nerovností. Policy brief
Zda lze vnímat pandemii jako příležitost pro snížení genderové nerovnosti v podnikání bylo hlavní otázkou participativního workshopu, který jsme uspořádaly v Sociologickém ústavu 13. 3. 2024. Diskuze ...
Galloping of insulated bundled overhead line - nonlinear numerical analysis in time domain
Macháček, Michael; Hračov, Stanislav
2024 - English
Our contribution focuses on a 3D numerical nonlinear analysis of galloping in a specific bundled overhead line with ice accretion. We studied the susceptibility to this self-excited oscillation, critical onset wind speeds, and global dynamic response of a very low-tensioned line with simulated icing observed on similar real conductors. Due to the highly nonlinear mechanical behavior of such a flexible cable, we employed the Newmark integration method combined with the iterative Newton-Raphson method. We analyzed two numerical models of the overhead line loaded by the wind: one assuming nonlinearity only in the wind load, while retaining the linearity of the mechanical system itself, and the other representing a fully nonlinear system including geometrical nonlinearity. Our analysis revealed that the determined critical wind speeds for the onset of galloping are in relatively close ranges for both models. However, numerical simulations with the fully nonlinear system indicated significantly lower amplitudes of limit cycle oscillations, especially at higher wind speeds, compared to the linear model of the line. This underscores the necessity of using fully nonlinear models during the design stage of such low-tensioned aerial conductors.
Keywords:
aerial bundled conductors; wind effects; galloping; limit cycle oscillation
Available in digital repository of the ASCR
Galloping of insulated bundled overhead line - nonlinear numerical analysis in time domain
Our contribution focuses on a 3D numerical nonlinear analysis of galloping in a specific bundled overhead line with ice accretion. We studied the susceptibility to this self-excited oscillation, ...
COVID-19 and political preferences through stages of the pandemic: the case of the Czech Republic
Bičáková, Alena; Jurajda, Štěpán
2024 - English
We track the effects of the COVID-19 pandemic on political preferences through ‘high’ and ‘low’ phases of the pandemic. We ask about the effects of the health and the economic costs of the pandemic measured at both personal and municipality levels. Consistent with the literature, we estimate effects suggestive of political accountability of leaders during ‘high’ pandemic phases. However, we also find that the pandemic political accountability effects are mostly short-lived, and do not extend to the first post-pandemic elections.
Keywords:
COVID-19; political preferences; election outcomes
Fulltext is available at external website.
COVID-19 and political preferences through stages of the pandemic: the case of the Czech Republic
We track the effects of the COVID-19 pandemic on political preferences through ‘high’ and ‘low’ phases of the pandemic. We ask about the effects of the health and the economic costs of the pandemic ...
(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 ...
Collective vs. family remembrance: evidence from two Russian betrayals
Gharibyan, Sinara
2024 - English
Is family or collective remembrance of the distant past more powerful in shaping current behavior? To answer this question, I link two historical episodes from Armenian history separated by a century. During both World War I (WWI) and the 2020 Nagorno-Karabakh War, Russia was anticipated to provide military support to Armenia, its ally, but failed to do so. I demonstrate that the memories of the first Russian betrayal were activated after the second war. I identify family memory of the first betrayal using distinct West Armenian (Ottoman Armenian) surnames and proxy collective memory through locations renamed to commemorate lost Armenian localities during WWI. The difference-in-differences (DiD) approach shows that both family and collective remembrance negatively affect pro-Russian parties’ vote share, with all the conventional assumptions of DiD verified. Family remembrance influences behavior through traumatic recall, whereas collective remembrance operates via social capital.
Keywords:
collective memory; family remembrance; voting
Fulltext is available at external website.
Collective vs. family remembrance: evidence from two Russian betrayals
Is family or collective remembrance of the distant past more powerful in shaping current behavior? To answer this question, I link two historical episodes from Armenian history separated by a century. ...
Digitální systémy pro monitorování BOZP
Výzkumný ústav bezpečnosti práce, v. v. i.
2024 - Czech
Digitální systémy pro monitorování BOZP využívají digitální technologii ke shromažďování a analýze dat za účelem identifikace a hodnocení rizik na pracovišti.
Keywords:
digitalizace; digitální systémy; BOZP; bezpečnost práce; digitalisation; digital systems; OSH; occupational safety
Available in a digital repository NRGL
Digitální systémy pro monitorování BOZP
Digitální systémy pro monitorování BOZP využívají digitální technologii ke shromažďování a analýze dat za účelem identifikace a hodnocení rizik na pracovišti.
Automatizace pracovních úkolů
Výzkumný ústav bezpečnosti práce, v. v. i.
2024 - Czech
Systémy založené na umělé inteligenci (AI) pro automatizaci kognitivních i fyzických úkolů vykazují slibné výsledky v různých odvětvích. Využívání umělé inteligence a robotiky k automatizaci nebezpečných nebo opakujících se úkolů na pracovišti v rámci ochrany pracovníků je tak v současnosti na vzestupu.
Keywords:
umělá inteligence; BOZP; automatizace; artificial intelligence; OSH; automation
Available in a digital repository NRGL
Automatizace pracovních úkolů
Systémy založené na umělé inteligenci (AI) pro automatizaci kognitivních i fyzických úkolů vykazují slibné výsledky v různých odvětvích. Využívání umělé inteligence a robotiky k automatizaci ...
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