Matthew S Johnson
Dados Biográficos
| ID | 5867557 |
|---|---|
| NOME | Matthew S Johnson |
| PRENOMES | Matthew S |
| SOBRENOME | Johnson |
| ASSINATURA | JOHNSON M S |
| AFILIAÇÕES | University of Copenhagen |
| ORCID | 0000-0001-6029-896X |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 13 |
| TOTAL DE CITAÇÕES | 9 |
| TOTAL COMO AUTOR | 13 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2001 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 1 |
Trade Competition and the Decline in Union Organizing
The long-term decline in US workers’ attempts to organize labor unions accelerated after 2000. We find that the swift rise of imports from China arising from a change in trade policy accounts for nearly all of this post-2000 acceleration: union certification elections decreased substantially among workers in manufacturing industries directly exposed to imports, but also among workers indirectly exposed through their local labor market. Consistent…
The Labor Market Effects of Legal Restrictions on Worker Mobility
Legal Protection against Retaliatory Firing Improves Workplace Safety
Workplace safety policies are designed to ensure that employers internalize the costs of injuries, but employers can undermine these policies with threats of dismissal. We show that states’ adoption of the public policy exception to at-will employment—an exception forbidding employers from firing workers for filing workers’ compensation claims or for whistleblowing—led to a substantial reduction in injuries. The widespread adoption of the public …
Satellite-detected large CO 2 release in southwestern North America during the 2020–2021 drought and associated wildfires
Southwestern North America (SWNA) continuously experienced megadroughts and large wildfires in 2020 and 2021. Here, we quantified their impact on the terrestrial carbon budget using net biome production (NBP) estimates from an ensemble of atmospheric inversions assimilating in-situ CO 2 and Carbon Observatory – 2 (OCO-2) satellite XCO 2 retrievals (OCO-2 v10 MIP Extension), two satellite-based gross primary production (GPP) datasets, and two fire…
Physical and practical constraints on atmospheric methane removal technologies
Despite their apparent utility in mitigating climate change, technologies for removing methane from air are in early stages of development. Here we evaluate the limiting physical constraints, for three types of systems: two- and three-dimensional infrastructure and atmospheric oxidation enhancement, focusing on removing low ( x CH4 < 1000 ppm) and ambient ( x CH4 < 2 ppm) methane from air. With the space velocities and removal efficiencies of cur…
The use of δ 13 C in CO to determine removal of CH 4 by Cl radicals in the atmosphere
The reaction of CH 4 with chlorine (Cl) radicals in the atmosphere is associated with an extraordinarily strong isotopic fractionation, where 12 CH 4 reacts about 70 ‰ faster with Cl than 13 CH 4 . Therefore, although the Cl-based sink of CH 4 constitutes only a small contribution to its total removal rate, the uncertainty in this small sink has been identified as one of the two largest uncertainties of isotope-based CH 4 source apportionment at …
Evaluating the potential of iron-based interventions in methane reduction and climate mitigation
Keeping global surface temperatures below international climate targets will require substantial measures to control atmospheric CO 2 and CH 4 concentrations. Recent studies have focused on interventions to decrease CH 4 through enhanced atmospheric oxidation. Here for the first time using a set of models, we evaluate the effect of adding iron aerosols to the atmosphere to enhance molecular chlorine production, and thus enhance the atmospheric ox…
A high efficiency gas phase photoreactor for eradication of methane from low-concentration sources
Despite the urgent need, very few methods are able to efficiently remove methane from waste air with low cost and energy per unit volume, especially at the low concentrations found in emissions from e.g. wastewater treatment, livestock production, biogas production and mine ventilation. We present the first results of a novel method based on using chlorine atoms in the gas phase, thereby achieving high efficiency. A laboratory prototype of the me…
Demand Conditions and Worker Safety
We investigate how demand conditions affect employers’ provision of safety—something about which theory is ambivalent. Positive demand shocks relax financial constraints that limit safety investment but simultaneously raise the opportunity cost of increasing safety rather than production. We study the US metals mining sector, leveraging exogenous demand shocks from short-term variation in global commodity prices. We find that positive price shock…
Covid19
The COVID-19 outbreak spread rapidly throughout the globe, with worldwide infections and deaths continuing to increase dramatically. To control disease spread and protect healthcare workers, accurate information is necessary. We searched PubMed and Google Scholar for studies published from December 2019 to March 31, 2020 with the terms "COVID-19," "2019-nCoV," "SARS-CoV-2," or "Novel Coronavirus Pneumonia." The main symptoms of COVID-19 are fever…
Three New Methods for Analysis of Answer Changes
In a pioneering research article, Wollack and colleagues suggested the “erasure detection index” (EDI) to detect test tampering. The EDI can be used with or without a continuity correction and is assumed to follow the standard normal distribution under the null hypothesis of no test tampering. When used without a continuity correction, the EDI often has inflated Type I error rates. When used with a continuity correction, the EDI has satisfactory …
Personal and participatory socializers of the perceived legitimacy of aggressive behavior in sport
Recent international attention from the media and professional organizations has focused increasingly on violent incidents in sport. The present study developed and used the Sport Behavior Inventory (SBI) to examine personal and participatory variables that influence the socialization of the perceived legitimacy of aggressive sport behavior in children and adolescents ages 8–19 enrolled in public schools. In phase I of this study, the psychometri…
Personal and participatory socializers of the perceived legitimacy of aggressive behavior in sport
Personal and participatory socializers of the perceived legitimacy of aggressive behavior in sport
Recent international attention from the media and professional organizations has focused increasingly on violent incidents in sport. The present study developed and used the Sport Behavior Inventory (SBI) to examine personal and participatory variables that influence the socialization of the perceived legitimacy of aggressive sport behavior in children and adolescents ages 8–19 enrolled in public schools. In phase I of this study, the psychometri…
Personal and participatory socializers of the perceived legitimacy of aggressive behavior in sport
Recent international attention from the media and professional organizations has focused increasingly on violent incidents in sport. The present study developed and used the Sport Behavior Inventory (SBI) to examine personal and participatory variables that influence the socialization of the perceived legitimacy of aggressive sport behavior in children and adolescents ages 8–19 enrolled in public schools. In phase I of this study, the psychometri…
Personal and participatory socializers of the perceived legitimacy of aggressive behavior in sport
Three New Methods for Analysis of Answer Changes
In a pioneering research article, Wollack and colleagues suggested the “erasure detection index” (EDI) to detect test tampering. The EDI can be used with or without a continuity correction and is assumed to follow the standard normal distribution under the null hypothesis of no test tampering. When used without a continuity correction, the EDI often has inflated Type I error rates. When used with a continuity correction, the EDI has satisfactory …
Covid19
The COVID-19 outbreak spread rapidly throughout the globe, with worldwide infections and deaths continuing to increase dramatically. To control disease spread and protect healthcare workers, accurate information is necessary. We searched PubMed and Google Scholar for studies published from December 2019 to March 31, 2020 with the terms "COVID-19," "2019-nCoV," "SARS-CoV-2," or "Novel Coronavirus Pneumonia." The main symptoms of COVID-19 are fever…
Demand Conditions and Worker Safety
We investigate how demand conditions affect employers’ provision of safety—something about which theory is ambivalent. Positive demand shocks relax financial constraints that limit safety investment but simultaneously raise the opportunity cost of increasing safety rather than production. We study the US metals mining sector, leveraging exogenous demand shocks from short-term variation in global commodity prices. We find that positive price shock…
A high efficiency gas phase photoreactor for eradication of methane from low-concentration sources
Despite the urgent need, very few methods are able to efficiently remove methane from waste air with low cost and energy per unit volume, especially at the low concentrations found in emissions from e.g. wastewater treatment, livestock production, biogas production and mine ventilation. We present the first results of a novel method based on using chlorine atoms in the gas phase, thereby achieving high efficiency. A laboratory prototype of the me…
Legal Protection against Retaliatory Firing Improves Workplace Safety
Workplace safety policies are designed to ensure that employers internalize the costs of injuries, but employers can undermine these policies with threats of dismissal. We show that states’ adoption of the public policy exception to at-will employment—an exception forbidding employers from firing workers for filing workers’ compensation claims or for whistleblowing—led to a substantial reduction in injuries. The widespread adoption of the public …
Satellite-detected large CO 2 release in southwestern North America during the 2020–2021 drought and associated wildfires
Southwestern North America (SWNA) continuously experienced megadroughts and large wildfires in 2020 and 2021. Here, we quantified their impact on the terrestrial carbon budget using net biome production (NBP) estimates from an ensemble of atmospheric inversions assimilating in-situ CO 2 and Carbon Observatory – 2 (OCO-2) satellite XCO 2 retrievals (OCO-2 v10 MIP Extension), two satellite-based gross primary production (GPP) datasets, and two fire…
Physical and practical constraints on atmospheric methane removal technologies
Despite their apparent utility in mitigating climate change, technologies for removing methane from air are in early stages of development. Here we evaluate the limiting physical constraints, for three types of systems: two- and three-dimensional infrastructure and atmospheric oxidation enhancement, focusing on removing low ( x CH4 < 1000 ppm) and ambient ( x CH4 < 2 ppm) methane from air. With the space velocities and removal efficiencies of cur…
The use of δ 13 C in CO to determine removal of CH 4 by Cl radicals in the atmosphere
The reaction of CH 4 with chlorine (Cl) radicals in the atmosphere is associated with an extraordinarily strong isotopic fractionation, where 12 CH 4 reacts about 70 ‰ faster with Cl than 13 CH 4 . Therefore, although the Cl-based sink of CH 4 constitutes only a small contribution to its total removal rate, the uncertainty in this small sink has been identified as one of the two largest uncertainties of isotope-based CH 4 source apportionment at …
Evaluating the potential of iron-based interventions in methane reduction and climate mitigation
Keeping global surface temperatures below international climate targets will require substantial measures to control atmospheric CO 2 and CH 4 concentrations. Recent studies have focused on interventions to decrease CH 4 through enhanced atmospheric oxidation. Here for the first time using a set of models, we evaluate the effect of adding iron aerosols to the atmosphere to enhance molecular chlorine production, and thus enhance the atmospheric ox…
The Labor Market Effects of Legal Restrictions on Worker Mobility
Trade Competition and the Decline in Union Organizing
The long-term decline in US workers’ attempts to organize labor unions accelerated after 2000. We find that the swift rise of imports from China arising from a change in trade policy accounts for nearly all of this post-2000 acceleration: union certification elections decreased substantially among workers in manufacturing industries directly exposed to imports, but also among workers indirectly exposed through their local labor market. Consistent…
Atmospheric and Environmental Gas Dynamics (5 obras) · Economics (5 obras) · Environmental Science (4 obras) · Chemistry (3 obras) · Geology (3 obras) · Labour economics (3 obras) · Mathematics (3 obras) · Methane (3 obras) · Political science (3 obras) · Applied Psychology (2 obras)