Legibility of Overhead Guide Signs with Encapsulated Versus Microprismatic Retroreflective Sheeting

2003 ◽  
Vol 1844 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Paul J. Carlson ◽  
Gene Hawkins
Keyword(s):  
United States ◽  
Age Groups ◽  
The United States ◽  
Vehicle Design ◽  
Sport Utility Vehicle ◽  
Passenger Car ◽  
Late Model ◽  
The Difference ◽  
Transportation Agencies ◽  
Utility Vehicle

A study was conducted to determine the legibility impacts of freeway guide signs when encapsulated retroreflective sheeting is replaced with microprismatic retroreflective sheeting. The study included freeway guide signs mounted in an overhead position and exclusively illuminated with vehicle headlamps. A total of 60 subjects divided into three age groups participated in this nighttime study. All 60 subjects drove two vehicles, a modern sport utility vehicle (SUV) and a late-model passenger car. The findings show that microprismatic sheeting does provide statistically longer legibility distances than encapsulated sheeting. Overall, the improvement was 53 ft, or 9.5%. However, for the modern SUV, the improvement was much greater (78 ft) compared with the late-model passenger car (28 ft). The main differences are related to the evolution of vehicle design and specifications. Today’s United States citizens prefer large vehicles such as an SUV, pickup, and minivan. These vehicles also meet recently revised headlamp specifications. These two issues inherently reduce the amount of headlamp light retroreflected from the sign back to the driver. Unfortunately, these counterproductive trends show signs of continuing. Considering the increasing proportion of older drivers in the United States, it becomes even more critical that transportation agencies do all they can to increase overhead-sign luminance. The findings show that increasing overhead-sign luminance by switching from encapsulated retroreflective sheeting to microprismatic retro-reflective sheeting results in significantly longer legibility distances. The magnitude of the difference will continue to increase as long as the SUV-like proportion of the U.S. fleet continues to grow and headlamp specifications continue to direct less light toward overhead signs.

scholarly journals Incidence of Benign Meningiomas in the United States: Current and Future Trends

2021 ◽  
Author(s):  
Sonia Bhala ◽  
Douglas R Stewart ◽  
Victoria Kennerley ◽  
Valentina I Petkov ◽  
Philip S Rosenberg ◽  
...  
Keyword(s):  
United States ◽  
Age Groups ◽  
Cancer Registries ◽  
Health Impact ◽  
The United States ◽  
Birth Cohorts ◽  
Benign Meningioma ◽  
Case Count ◽  
Future Burden ◽  
Rate Ratios

Abstract Background Benign meningiomas are the most frequently reported central nervous system tumors in the United States (US), with increasing incidence in past decades. However, the future trajectory of this neoplasm remains unclear. Methods We analyzed benign meningioma incidence of cases identified by any means (eg, radiographically with or without microscopic confirmation) in US Surveillance Epidemiology and End Results (SEER) cancer registries among 35–84-year-olds during 2004–2017 by sex and race/ethnicity using age-period-cohort (APC) models. We employed APC forecasting models to glean insights regarding the etiology, distribution, and anticipated future (2018–2027) public health impact of this neoplasm. Results In all groups, meningioma incidence overall increased through 2010, then stabilized. Temporal declines were statistically significant overall and in most groups. JoinPoint analysis of cohort rate-ratios identified substantial acceleration in White men born after 1963 (from 1.1% to 3.2% per birth year); cohort rate-ratios were stable or increasing in all groups and all birth cohorts. We forecast that meningioma incidence through 2027 will remain stable or decrease among 55–84-year-olds but remain similar to current levels among 35–54-year-olds. Total meningioma burden in 2027 is expected to be approximately 30,470 cases, similar to the expected case count of 27,830 in 2018. Conclusions Between 2004–2017, overall incidence of benign meningioma increased and then stabilized or declined. For 2018–2027, our forecast is incidence will remain generally stable in younger age groups but decrease in older age groups. Nonetheless, the total future burden will remain similar to current levels because the population is aging.

scholarly journals The Effect of Massachusetts' Health Reform on Employer-Sponsored Insurance Premiums

2010 ◽  
Vol 13 (2) ◽  
Author(s):  
John F Cogan ◽  
R. Glenn Hubbard ◽  
Daniel Kessler
Keyword(s):  
United States ◽  
Health Reform ◽  
Medical Expenditure Panel Survey ◽  
Private Insurance ◽  
The United States ◽  
Medical Expenditure ◽  
Insurance Premiums ◽  
Reform Plan ◽  
The Difference ◽  
The Cost

In this paper, we use publicly available data from the Medical Expenditure Panel Survey - Insurance Component (MEPS-IC) to investigate the effect of Massachusetts' health reform plan on employer-sponsored insurance premiums. We tabulate premium growth for private-sector employers in Massachusetts and the United States as a whole for 2004 - 2008. We estimate the effect of the plan as the difference in premium growth between Massachusetts and the United States between 2006 and 2008—that is, before versus after the plan—over and above the difference in premium growth for 2004 to 2006. We find that health reform in Massachusetts increased single-coverage employer-sponsored insurance premiums by about 6 percent, or $262. Although our research design has important limitations, it does suggest that policy makers should be concerned about the consequences of health reform for the cost of private insurance.

scholarly journals La contrebande des produits du tabac au Canada entre 1985 et 1994 et le cas particulier du Québec

Criminologie ◽  
2005 ◽  
Vol 30 (1) ◽  
pp. 53-72 ◽  
Author(s):  
Marc Alain
Keyword(s):  
United States ◽  
Driving Force ◽  
The United States ◽  
Eastern Canada ◽  
Mass Consumption ◽  
Cigarette Taxes ◽  
Geographical Factors ◽  
The World ◽  
The Difference

The professional smuggling of mass consumption products develops when demand for a product is not adequately fulfilled by the legitimate market. The difficulties encountered in supplying are, in most contemporary cases, caused by real rarity of the desired product. For other cases, however, the rarity is largely virtual in that government taxes aimed at the product in question lead to increasing the product's price to a prohibitive end. This was the case with cigarettes in Canada between 1985 and 1994. Before both, the federal and provincial, governments decided to drastically decrease cigarette taxes in February 1994, the price for a pack of cigarettes was five to six times higher than the same product in the United States. This article begins with a brief review of the contribution made by economists in regard to contemporary smuggling. Focus will be aimed at common characteristics of the smuggling phenomenon across the world. Elements which are more particular to the Canadian smuggling situation will be identified as well. While the difference in the price of cigarettes between Canada and the United States would seem to be the undeniable driving force behind the development of smuggling activities at the countries ' border, one key question remains unexplained. Why was the volume of contraband unequally distributed across Canada even though the price of cigarettes remained largely consistent throughout all provinces? The level of organization of smuggling networks was much higher in Eastern Canada, and particularly in Quebec, than it was in the western provinces. It is argued that the reasons for this are not only due to price, but to a series of political, historical, and geographical factors which allowed cigarette smugglers to function better in Quebec than in the rest of the country.

Equal Opportunity in a Pluralistic Society

1987 ◽  
Vol 5 (1) ◽  
pp. 104-119 ◽  
Author(s):  
James W. Nickel
Keyword(s):  
United States ◽  
Religious Pluralism ◽  
Equal Opportunity ◽  
Religious Diversity ◽  
The United States ◽  
Pluralistic Society ◽  
Self Image ◽  
The Difference ◽  
The U.S

The United States has never been culturally or religiously homogeneous, but its diversity has greatly increased over the last century. Although the U.S. was first a multicultural nation through conquest and enslavement, its present diversity is due equally to immigration. In this paper I try to explain the difference it makes for one area of thought and policy – equal opportunity – if we incorporate cultural and religious pluralism into our national self-image. Formulating and implementing a policy of equal opportunity is more difficult in diverse, pluralistic countries than it is in homogeneous ones. My focus is cultural and religious diversity in the United States, but my conclusions will apply to many other countries – including ones whose pluralism is found more in religion than in culture.

Firearm Injuries Affecting the Pediatric Population

PEDIATRICS ◽  
1992 ◽  
Vol 89 (4) ◽  
pp. 788-790
Author(s):  
Keyword(s):  
United States ◽  
Children And Adolescents ◽  
Pediatric Population ◽  
Age Groups ◽  
Unintentional Injury ◽  
The United States ◽  
Male Adolescents ◽  
Firearm Injuries ◽  
Group 2 ◽  
Developed Nations

In the United States approximately 30 000 people die from firearm injuries each year. Many more are wounded. In the mid 1980s, more than 3000 of the dead were children and adolescents aged 1 to 19 years.1 In 1989 nearly 4000 firearm deaths were among children 1 to 19 years of age, accounting for 12% of all deaths in that age group.2 All of these deaths or injuries affect other children because the victims who are killed or wounded are frequently relatives, neighbors, or friends. Comparison data for childhood age groups demonstrate that in 1987, 203 children aged 1 to 9 years, 484 children aged 10 to 14 years, and 2705 adolescents aged 15 to 19 years died as a result of firearm injuries.1 Firearm deaths include unintentional injuries, homicides, and suicides. Among the 1- to 9-year-olds, half of the deaths were homicides and half were unintentional. Among the 10- to 14-year-olds, one third of the deaths were homicides, one third were suicides, and one third were unintentional. Among the 15- to 19-year-olds, 48% were homicides, 42% were suicides, and 8% were unintentional.1 Firearm homicides are the leading cause of death for some US subpopulations, such as urban black male adolescents and young adults.3 Table 1 indicates how firearms contributed to the deaths of children and adolescents (homicides, suicides, and all causes) in 1987. Table 2 illustrates the unusual scale of firearm violence affecting young people in the United States compared with other developed nations.4 Firearm injuries are the fourth leading cause of unintentional injury deaths to children younger than 15 years of age in the US.5

scholarly journals An analysis of income differentials by marital status

2008 ◽  
Vol 38 (2) ◽  
pp. 267-292 ◽  
Author(s):  
Regina Madalozzo
Keyword(s):  
United States ◽  
Marital Status ◽  
The United States ◽  
Married Women ◽  
Empirical Literature ◽  
Income Differentials ◽  
Marriage Premium ◽  
Unmarried Cohabitation ◽  
Marriage Penalty ◽  
The Difference

Unmarried cohabitation has become a more frequently observed phenomenon over the last three decades, and not only in the United States. The objective of this work is to examine income differentials between married women and those who remain single or cohabitate. The empirical literature shows that, while the marriage premium is verified in different studies for men, the result for women is not conclusive. The main innovation of my study is the existence of controls for selection. In this study, we have two sources of selectivity: into the labor force and into a marital status category. The switching regressions and the Oaxaca decomposition results demonstrate the existence of a significant penalty for marriage. Correcting for both types of selection, the difference in wages varies between 49% and 53%, when married women are compared with cohabiting ones, and favors non-married women. This result points to the existence of a marriage penalty.

scholarly journals INTERVENSI KEBIJAKAN MONETER TERHADAP INVESTASI PORTOFOLIO: KASUS INDONESIA DAN AMERIKA SERIKAT

2020 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Nanda Alfarina ◽  
Hasdi Aimon
Keyword(s):  
United States ◽  
Interest Rate ◽  
Secondary Data ◽  
The United States ◽  
Portfolio Investment ◽  
Mechanism Analysis ◽  
Long Run ◽  
Negative Effect ◽  
The Difference ◽  
Effect Of Monetary Policy

This study aims to determine the effect of monetary policy measured by the central bank’s policy rate (X1) on portfolio investment (Y) in Indonesia and United States in the long run. The data used are secondary data seouced from SEKI BI, FRED The FEd, coinmarketcap.com, and investing.com, with the VECM (Vector Error Correction Mechanism) analysis methode. The study show The study shows the differences between the results that occur in Indonesia and the United States. The policy interest rate has a significant positive effect on portfolio investment in the long run in Indonesia, while in the United States the interest rate in the long run has a significant negative effect on portfolio investment. The difference in research results between the two countries shows the need for different treatment for monetary authorities in encouraging portfolio investment 

scholarly journals Book Review | George Will’s Conservatism and Democracy in Crisis

2020 ◽  
Vol 9 (2) ◽  
Keyword(s):  
United States ◽  
Direct Democracy ◽  
The United States ◽  
James Madison ◽  
American Government ◽  
Federalist Papers ◽  
The Federalist ◽  
The Difference ◽  
The Government ◽  
The Federalist Papers

Americans typically view the United States as a democracy and are rightly proud of that. Of course, as those of a more precise nature, along with smug college students enrolled in introductory American government classes, are quick to point out, the United States is technically a republic. This is a bit too clever by half since James Madison, in The Federalist Papers, defined a republic the way most people think of a democracy—a system of representative government with elections: “[The]… difference between a Democracy and a Republic are, first the delegation of the Government, in the latter, to a small number of citizens elected by the rest.” What the framers thought of as democracy is today referred to as direct democracy, the belief that citizens should have more direct control over governing. The Athenian assembly was what the framers, Madison in particular, saw as the paragon of direct democracy—and as quite dangerous. While direct democracy has its champions, most Americans equate democracy with electing officials to do the business of government.

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