Related variety and employment growth: a spatial dynamic model for Brazilian microregions

2019 ◽  
Vol 12 (1) ◽  
pp. 105-123
Author(s):  
Gabriel Dias Silva ◽  
Eduardo Gonçalves ◽  
Inácio Fernandes Araújo Junior
Keyword(s):  
Dynamic Model ◽  
Employment Growth ◽  
Spatial Dynamic ◽  
Related Variety

scholarly journals Using a physical model and aggregate data from Israel to estimate the current (July 2021 ) efficacy of the Pfizer-BioNTech vaccine

2021 ◽  
Author(s):  
Hilla De-Leon ◽  
Francesco Pederiva
Keyword(s):  
Physical Model ◽  
Dynamic Model ◽  
Elderly Population ◽  
Age Groups ◽  
Aggregate Data ◽  
High Ability ◽  
Spatial Dynamic ◽  
Severe Morbidity ◽  
Age Dependent ◽  
State Of Israel

From the end of June 2021, the state of Israel, where ~60\% of the population is vaccinated with an mRNA BNT162b2 vaccine, has an increase in the daily morbidity. This increase may be a result of different events: a temporal decline of the vaccine's efficacy; Lower efficacy of the vaccine against the current Delta ( (B.1.617.2) variant (which is now the dominant strain in Israel); A result of lack of social restrictions, a highly contagious variant, or any combination of the above. We found, by using a novel spatial-dynamic model and recent {aggregate} data from Israel, that this new surge of cases is partiality due to a decline in the shielding of those who were vaccinated about six months ago. Also, we found a decrease in the vaccine's efficacy against severe morbidity for the early elderly population compared to the rest of the vaccinated population. These results, which are consistent with recent studies, emphasize the high ability of the model in evaluating the time- and age-dependent efficacy of the vaccine for different age groups and enables to predict the spread of the pandemic as a function of such efficacy.

scholarly journals A Spatial Dynamic Model for Export Intensity of Hazardous Industrial Waste: The Incentive Effect of Regional Environmental Policies

2021 ◽  
Author(s):  
Jaime Vallés-Giménez ◽  
Anabel Zárate-Marco
Keyword(s):  
Dynamic Model ◽  
Industrial Waste ◽  
Fixed Effects ◽  
Economies Of Scale ◽  
Environmental Policies ◽  
Industrial Agglomeration ◽  
Spatial Dynamic ◽  
Export Intensity ◽  
Dynamic Component ◽  
First Time

AbstractThis paper analyses, in the context of the Environmental Kuznet Curve, the determinants of export intensity of hazardous industrial waste among Spanish regions, with particular attention to the influence of waste taxes and of environmental policies. This study is carried out for the first time in the literature with a spatial dynamic model, fixed effects and panel data for the 17 regions (Comunidades Autónomas) of Spain during the period 2007–2017. The results suggest there is a spatial-dynamic component to export intensity, and that both regional taxes on waste disposal and environmental policy stringency appear to encourage, albeit modestly, the rate of exported waste to other regions. The model also shows that the more regions recycle, and the greater the economies of scale arising from industrial agglomeration, the lower is the region’s waste export intensity, although increasing restrictions on the international trade in hazardous waste have intensified trading inside the country. Finally, the results suggest a non-linear relationship between growth and export intensity, although apparently we are still far from the absolute decoupling of the Environmental Kuznet Curve.

The impact of related variety on the creative employment growth

2017 ◽  
Vol 58 (3) ◽  
pp. 491-512 ◽  
Author(s):  
Luciana Lazzeretti ◽  
Niccolò Innocenti ◽  
Francesco Capone
Keyword(s):  
Employment Growth ◽  
Related Variety ◽  
The Impact

scholarly journals What pushed Israel out of herd immunity? Modeling COVID-19 spread of Delta and Waning immunity

2021 ◽  
Author(s):  
Hilla De-Leon ◽  
Dvir Aran
Keyword(s):  
Dynamic Model ◽  
Vaccination Campaign ◽  
Herd Immunity ◽  
Aggregate Data ◽  
Spatial Dynamic ◽  
Waning Immunity ◽  
The Impact ◽  
Pharmaceutical Interventions

Following a successful vaccination campaign at the beginning of 2021 in Israel, where approximately 60% of the population were vaccinated with an mRNA BNT162b2 vaccine, it seemed that Israel had crossed the herd immunity threshold (HIT). Nonetheless, Israel has seen a steady rise in COVID-19 morbidity since June 2021, reaching over 1,000 cases per million by August. This outbreak is attributed to several events that came together: the temporal decline of the vaccine's efficacy (VE); lower efficacy of the vaccine against the current Delta (B.1.617.2) variant; highly infectiousness of Delta; and temporary halt of mandated NPIs (non-pharmaceutical interventions) or any combination of the above. Using a novel spatial-dynamic model and recent aggregate data from Israel, we examine the extent of the impact of the Delta variant on morbidity and whether it can solely explain the outbreak. We conclude that both Delta infectiousness and waning immunity could have been able to push Israel above the HIT independently, and thus, to mitigate the outbreak effective NPIs are required. Our analysis cautions countries that once vaccines' will wane a highly infectious spread is expected, and therefore, the expected decline in the vaccine's effectiveness in those countries should be accompanied by another vaccination campaign and effective NPIs

scholarly journals A semiparametric spatial dynamic model

2014 ◽  
Vol 42 (2) ◽  
pp. 700-727 ◽  
Author(s):  
Yan Sun ◽  
Hongjia Yan ◽  
Wenyang Zhang ◽  
Zudi Lu
Keyword(s):  
Dynamic Model ◽  
Spatial Dynamic

Short-term volume and turgor regulation in yeast

2008 ◽  
Vol 45 ◽  
pp. 147-160 ◽  
Author(s):  
Jörg Schaber ◽  
Edda Klipp
Keyword(s):  
Dynamic Model ◽  
Volume Change ◽  
Volume Regulation ◽  
Time Course ◽  
Osmotic Shock ◽  
Intracellular Concentration ◽  
Short Term ◽  
Hydrodynamic Property ◽  
Turgor Regulation ◽  
Thermodynamic Framework

Volume is a highly regulated property of cells, because it critically affects intracellular concentration. In the present chapter, we focus on the short-term volume regulation in yeast as a consequence of a shift in extracellular osmotic conditions. We review a basic thermodynamic framework to model volume and solute flows. In addition, we try to select a model for turgor, which is an important hydrodynamic property, especially in walled cells. Finally, we demonstrate the validity of the presented approach by fitting the dynamic model to a time course of volume change upon osmotic shock in yeast.

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