scholarly journals Exploring the transferability of crash modification factors: case studies on passing lanes and dual rumble strips on Ontario two-lane highways

2021 ◽  
Author(s):  
Shahram Almasizadeh
Keyword(s):  
Low Cost ◽  
The United States ◽  
Linear Modeling ◽  
The Us ◽  
Treatment Measures ◽  
Crash Modification Factors ◽  
Using Data ◽  
Rumble Strip ◽  
Shoulder Rumble Strips ◽  
Combined Data

The safety effects of design and other highway improvement options are specified through Crash Modification Factors (CMFs). CMFs for two low cost safety treatment measures -- passing lanes and dual application of center line and shoulder rumble strips -- are explored separately in this paper. Using data provided from previous studies conducted in the United States, and generalized linear modeling, the transferability of the US-based knowledge on safety effects of passing lanes and rumble strips for application in Ontario was explored. It was found that the safety effects were consistent for passing lanes in Michigan and Ontario and a Crash Modification Function was developed relating the CMF to length of passing lane for the combined data. The dual rumble strip effects were also reasonably consistent with results from a limited analysis of Ontario data and are recommended for application in the province.

scholarly journals Exploring the transferability of crash modification factors: case studies on passing lanes and dual rumble strips on Ontario two-lane highways

2021 ◽  
Author(s):  
Shahram Almasizadeh
Keyword(s):  
Low Cost ◽  
The United States ◽  
Linear Modeling ◽  
The Us ◽  
Treatment Measures ◽  
Crash Modification Factors ◽  
Using Data ◽  
Rumble Strip ◽  
Shoulder Rumble Strips ◽  
Combined Data

The safety effects of design and other highway improvement options are specified through Crash Modification Factors (CMFs). CMFs for two low cost safety treatment measures -- passing lanes and dual application of center line and shoulder rumble strips -- are explored separately in this paper. Using data provided from previous studies conducted in the United States, and generalized linear modeling, the transferability of the US-based knowledge on safety effects of passing lanes and rumble strips for application in Ontario was explored. It was found that the safety effects were consistent for passing lanes in Michigan and Ontario and a Crash Modification Function was developed relating the CMF to length of passing lane for the combined data. The dual rumble strip effects were also reasonably consistent with results from a limited analysis of Ontario data and are recommended for application in the province.

scholarly journals Solar Thermochemical Hydrogen Production in the USA

2021 ◽  
Vol 13 (14) ◽  
pp. 7804
Author(s):  
Christoph Falter ◽  
Andreas Sizmann
Keyword(s):  
Hydrogen Production ◽  
Large Scale ◽  
Low Cost ◽  
The United States ◽  
Solar Irradiation ◽  
Transport Sector ◽  
Fossil Energy ◽  
The Us ◽  
The Usa ◽  
Solar Thermochemical

Hydrogen produced from renewable energy has the potential to decarbonize parts of the transport sector and many other industries. For a sustainable replacement of fossil energy carriers, both the environmental and economic performance of its production are important. Here, the solar thermochemical hydrogen pathway is characterized with a techno-economic and life-cycle analysis. Assuming a further increase of conversion efficiency and a reduction of investment costs, it is found that hydrogen can be produced in the United States of America at costs of 2.1–3.2 EUR/kg (2.4–3.6 USD/kg) at specific greenhouse gas emissions of 1.4 kg CO2-eq/kg. A geographical potential analysis shows that a maximum of 8.4 × 1011 kg per year can be produced, which corresponds to about twelve times the current global and about 80 times the current US hydrogen production. The best locations are found in the Southwest of the US, which have a high solar irradiation and short distances to the sea, which is beneficial for access to desalinated water. Unlike for petrochemical products, the transport of hydrogen could potentially present an obstacle in terms of cost and emissions under unfavorable circumstances. Given a large-scale deployment, low-cost transport seems, however, feasible.

scholarly journals Urban Accounting and Welfare

2013 ◽  
Vol 103 (6) ◽  
pp. 2296-2327 ◽  
Author(s):  
Klaus Desmet ◽  
Esteban Rossi-Hansberg
Keyword(s):  
Large Population ◽  
The United States ◽  
Welfare Effects ◽  
City Size ◽  
Negative Effects ◽  
The Us ◽  
City Size Distribution ◽  
Using Data ◽  
Main Components ◽  
The City

We use a simple theory of a system of cities to decompose the determinants of the city size distribution into three main components: efficiency, amenities, and frictions. Higher efficiency and better amenities lead to larger cities but also to greater frictions through congestion and other negative effects of agglomeration. Using data on MSAs in the United States, we estimate these city characteristics. Eliminating variation in any of them leads to large population reallocations, but modest welfare effects. We apply the same methodology to Chinese cities and find welfare effects that are many times larger than those in the US. (JEL H71, O18, P25, R11, R23, R41)

scholarly journals FINANCIAL SECTOR INTERCONNECTEDNESS AND MONETARY POLICY TRANSMISSION

2018 ◽  
Vol 23 (3) ◽  
pp. 1074-1101
Author(s):  
Alessandro Barattieri ◽  
Maya Eden ◽  
Dalibor Stevanovic
Keyword(s):  
Monetary Policy ◽  
Vector Autoregression ◽  
The United States ◽  
Structural Vector Autoregression ◽  
Net Worth ◽  
Financial Variables ◽  
Us Economy ◽  
The Us ◽  
Policy Shocks ◽  
Using Data

We present a stylized model that illustrates how interbank trading can reduce the sensitivity of lending to entrepreneurs' net worth, thus affecting the transmission mechanism of monetary policy through the credit channel. We build a model-consistent measure of interconnectedness and document that, in the United States, this measure has increased substantially during the period 1952–2016. Finally, interacting the measure of interconnectedness in a structural vector autoregression and a factor-augmented vector autoregression for the US economy, we find that the impulse responses of several real and financial variables to monetary policy shocks are dampened as interconnectedness increases. We confirm the same result using data from 10 Euro area countries for the period 1999–2016.

Prospects for the global economy in 2018

2017 ◽  
Keyword(s):  
United States ◽  
Global Economy ◽  
Low Cost ◽  
Commodity Prices ◽  
Balance Of Power ◽  
The United States ◽  
Industrial Growth ◽  
Content Type ◽  
The Us ◽  
Open Markets

Subject PROSPECTS 2018: Global economy Significance Global GDP growth is likely to edge higher in 2018 as trade, investment and employment expand. However, monetary policy is gradually tightening, fiscal expansion is limited and there is little chance of a repeat of the surprise boost from trade seen in 2017 or a recovery in productivity. Inflation may remain obdurately low in the United States, Japan and the euro-area but not sufficiently to deter the US Federal Reserve (Fed) and the ECB from gently reeling in their bond-buying programmes. Modestly higher commodity prices should support economic recovery in resource producers. Impacts The timing of elections in the United States, Canada and Mexico may prolong the NAFTA trade talks into 2019 or beyond. China will battle any US attempts to constrain its innovation and access to technology, which it sees as key to its rebalancing. Technological progress and more open markets exacerbate the unpredictability of jobs and wages, but policy will increasingly address this. Automation means the job intensive low-cost industrial growth engine is now less effective; developing countries must consider new models. A better balance of power between multinationals, international organisations and governments will be key to global tax cooperation.

scholarly journals Home hours in the United States and Europe

2016 ◽  
Vol 17 (1) ◽  
Author(s):  
Lei Fang ◽  
Cara McDaniel
Keyword(s):  
United States ◽  
Time Use ◽  
Time Allocation ◽  
The United States ◽  
European Countries ◽  
The Past ◽  
The Us ◽  
The Difference ◽  
Using Data

AbstractUsing data from the Multinational Time Use Study, this paper documents the trend and level of time allocation, with a focus on home hours, for the US and European countries. Three patterns emerge. First, home hours per person have declined in both the US and European countries over the past 50 years. Second, female time allocation contributes more to the difference in time allocation per person between the US and European countries than does male time allocation. Third, the time allocation between the US and European countries is more similar for prime-age individuals than for young and old individuals.

scholarly journals The Partisan Mask: Political Orientation, Collectivism, and Religiosity Predict Mask Use During COVID-19

2021 ◽  
Author(s):  
Hohjin Im ◽  
Peiyi Wang ◽  
Chuansheng Chen
Keyword(s):  
State Level ◽  
The United States ◽  
Political Orientation ◽  
Third Party ◽  
The Us ◽  
Political Conservatism ◽  
Strong Correlate ◽  
Using Data ◽  
The Individual ◽  
Socioeconomic And Demographic Factors

In the United States, the COVID-19 pandemic became an unconventional vehicle to advance partisan rhetoric and antagonism. Using data available at the individual- (Study 1; N = 4,220), county- (Study 2; n = 3,046), and state-level (n = 49), we found that partisanship and political orientation was a robust and strong correlate of mask use. Political conservatism and Republican partisanship were related to downplaying the severity of COVID-19 and perceiving masks as being ineffective that, in turn, were related to lower mask use. In contrast, we found that counties with majority Democrat partisanship reported greater mask use, controlling for various socioeconomic and demographic factors. Lastly, states with strong cultural collectivism reported greater mask use while those with strong religiosity reported the opposite. States with greater Democrat partisanship and strong cultural collectivism subsequently reported lower COVID-19 deaths, mediated by greater mask use and lower COVID-19 cases, in the five months following the second wave of COVID-19 in the US during the Summer of 2020. Nonetheless, more than the majority for Democrats (91.58%), Republicans (77.52%), and third-party members (82.48%) reported using masks. Implications for findings are discussed.

scholarly journals Association Between Lifetime Classic Psychedelic Use and Hypertension in the Past Year

Hypertension ◽  
2021 ◽  
Vol 77 (5) ◽  
pp. 1510-1516
Author(s):  
Otto Simonsson ◽  
Peter S. Hendricks ◽  
Robin Carhart-Harris ◽  
Hannes Kettner ◽  
Walter Osika
Keyword(s):  
Odds Ratio ◽  
Adjusted Odds Ratio ◽  
Adult Population ◽  
The United States ◽  
Randomized Controlled ◽  
The Past ◽  
Causal Pathways ◽  
San Pedro ◽  
The Us ◽  
Using Data

Using data from the National Survey on Drug Use and Health (2005–2014), weighted to be representative of the US adult population, the present study investigated the association between lifetime classic psychedelic use and hypertension in the past year among adults in the United States. The results showed that respondents who reported having used a classic psychedelic at least once in their lifetime had significantly lower odds of hypertension in the past year after adjusting for several potential confounders (adjusted odds ratio, 0.86 [0.81–0.91]; P <0.0001). Notably, when analyzing the associations between hypertension in the past year and lifetime use of the main classes of classic psychedelics, namely tryptamines (N,N-dimethyltryptamine, ayahuasca, and psilocybin), lysergic acid diethylamide (a lysergamide), and phenethylamines (mescaline, peyote, and San Pedro), only the association with lifetime tryptamine use was significant (adjusted odds ratio, 0.80 [0.73–0.89]; P =0.0001). Though these associations are novel, rigorous randomized controlled trials are warranted to investigate potential causal pathways of classic psychedelics on blood pressure.

scholarly journals Identifying the Determinants of Chronic Absenteeism: A Bioecological Systems Approach

2017 ◽  
Vol 119 (7) ◽  
pp. 1-34 ◽  
Author(s):  
Michael A. Gottfried ◽  
Kevin A. Gee
Keyword(s):  
Socioeconomic Status ◽  
Systems Approach ◽  
Key Factors ◽  
Linear Modeling ◽  
Chronic Absenteeism ◽  
Positive Attitudes ◽  
Lower Socioeconomic ◽  
The Us ◽  
Using Data ◽  
Background Context

Background/Context Chronic school absenteeism is a pervasive problem across the US; in early education, it is most rampant in kindergarten and its consequences are particularly detrimental, often leading to poorer academic, behavioral and developmental outcomes later in life. Though prior empirical research has identified a broad range of determinants of chronic absenteeism, there lacks a single, unified theoretically driven investigation examining how such factors concurrently explain the incidence of chronic absenteeism among our nation's youngest schoolchildren. Thus, it is difficult to determine the relative importance of one factor over another, hence making it challenging to develop appropriate supports and services to reduce school absences. Purpose/Research Questions Our study filled this critical void—we investigated multiple determinants of chronic absenteeism that were grounded, theoretically and empirically, in Bronfenbrenner's bioecological model of development. Specifically, using data from the Early Childhood Longitudinal Study, Kindergarten Class of 2010–11 and the method of hierarchical generalized linear modeling, we analyzed how the co-occurrence of key (a) process, (b) person, and (c) context (micro-, meso-, exo- and macrosystem) factors was associated with kindergarteners’ probability of being chronically absent. Findings/Results Children who have poorer health, higher internalizing behaviors, and more frequent engagement in learning activities at home had higher odds of chronic absenteeism. Also, children from larger families and of lower socioeconomic status faced increased odds of chronic absenteeism. Conversely, children holding positive attitudes towards school had lowered odds of chronic absenteeism, a finding that remained robust across socioeconomic status groups. Finally, parent–school connections were associated with lowered odds of absenteeism. Conclusions/Recommendations Overall, our findings strongly suggested that addressing chronic absenteeism will require comprehensive and multifaceted approaches that recognize these multiple factors. With this theoretically grounded, more descriptive approach, it is more feasible to identify key factors and subsequently design policies and practices to prevent absence behavior.

Changing Industry Preferences in the United States

2017 ◽  
Author(s):  
Margaret E. Peters
Keyword(s):  
United States ◽  
Technology Adoption ◽  
Textile Industry ◽  
Trade Openness ◽  
The United States ◽  
International Competition ◽  
Trade Associations ◽  
Us Congress ◽  
The Us ◽  
Using Data

This chapter examines firms' willingness to support low-skill immigration by focusing on changing industry preferences in the United States. In particular, it considers preferences and lobbying on low-skill immigration by different sectors using data on which sectors testify before the US Congress on immigration and data on their lobbying behavior. The chapter first provides an overview of low-skill immigration policy in the United States before discussing the preferences of three different industries by looking at their trade associations: textile industry, steel industry, and agriculture. It analyzes how the willingness of these industries to lobby on low-skill immigration has changed with trade openness, international competition, firm mobility, productivity and technology adoption.

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