scholarly journals Challenges in Bridge Health Monitoring: A Review

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4336
Author(s):  
Piervincenzo Rizzo ◽  
Alireza Enshaeian
Keyword(s):  
United States ◽  
Health Monitoring ◽  
Highway Bridges ◽  
The United States ◽  
Anomalous Behavior ◽  
Existing Structures ◽  
Bridge Health Monitoring ◽  
Using Data ◽  
The Many ◽  
Major Factors

Bridge health monitoring is increasingly relevant for the maintenance of existing structures or new structures with innovative concepts that require validation of design predictions. In the United States there are more than 600,000 highway bridges. Nearly half of them (46.4%) are rated as fair while about 1 out of 13 (7.6%) is rated in poor condition. As such, the United States is one of those countries in which bridge health monitoring systems are installed in order to complement conventional periodic nondestructive inspections. This paper reviews the challenges associated with bridge health monitoring related to the detection of specific bridge characteristics that may be indicators of anomalous behavior. The methods used to detect loss of stiffness, time-dependent and temperature-dependent deformations, fatigue, corrosion, and scour are discussed. Owing to the extent of the existing scientific literature, this review focuses on systems installed in U.S. bridges over the last 20 years. These are all major factors that contribute to long-term degradation of bridges. Issues related to wireless sensor drifts are discussed as well. The scope of the paper is to help newcomers, practitioners, and researchers at navigating the many methodologies that have been proposed and developed in order to identify damage using data collected from sensors installed in real structures.

Migration and the Internet

2017 ◽  
Vol 14 (3) ◽  
pp. 331-342 ◽  
Author(s):  
Thomas John Cooke ◽  
Ian Shuttleworth
Keyword(s):  
United States ◽  
Information And Communication Technologies ◽  
Unobserved Heterogeneity ◽  
Panel Study ◽  
The United States ◽  
Negative Effect ◽  
Information And Communication ◽  
Using Data ◽  
And Migration ◽  
Dynamics Models

It is widely presumed that information and communication technologies, or ICTs, enable migration in several ways; primarily by reducing the costs of migration. However, a reconsideration of the relationship between ICTs and migration suggests that ICTs may just as well hinder migration; primarily by reducing the costs of not moving.  Using data from the US Panel Study of Income Dynamics, models that control for sources of observed and unobserved heterogeneity indicate a strong negative effect of ICT use on inter-state migration within the United States. These results help to explain the long-term decline in internal migration within the United States.

Applying the Devil's Works in a Holy Cause: Working-Class Popular Culture and the Salvation Army in the United States, 1879-1900

1997 ◽  
Vol 7 (2) ◽  
pp. 195-223
Author(s):  
Lillian Taiz
Keyword(s):  
United States ◽  
New York ◽  
New York City ◽  
Popular Culture ◽  
York City ◽  
The United States ◽  
Salvation Army ◽  
Public Meeting ◽  
The Many ◽  
Sunday Evening

Forty-eight hours after they landed in New York City in 1880, a small contingent of the Salvation Army held their first public meeting at the infamous Harry Hill's Variety Theater. The enterprising Hill, alerted to the group's arrival from Britain by newspaper reports, contacted their leader, Commissioner George Scott Railton, and offered to pay the group to “do a turn” for “an hour or two on … Sunday evening.” In nineteenth-century New York City, Harry Hill's was one of the best known concert saloons, and reformers considered him “among the disreputable classes” of that city. His saloon, they said, was “nothing more than one of the many gates to hell.”

scholarly journals Racial and Ethnic Disparities in Years of Potential Life Lost Attributable to COVID-19 in the United States: An Analysis of 45 States and the District of Columbia

2021 ◽  
Vol 18 (6) ◽  
pp. 2921
Author(s):  
Jay J. Xu ◽  
Jarvis T. Chen ◽  
Thomas R. Belin ◽  
Ronald S. Brookmeyer ◽  
Marc A. Suchard ◽  
...  
Keyword(s):  
United States ◽  
District Of Columbia ◽  
Ethnic Disparities ◽  
The United States ◽  
Attributable Mortality ◽  
Race Ethnicity ◽  
Using Data ◽  
Rate Ratios ◽  
Degree Of Association ◽  
Racial Ethnic

The coronavirus disease 2019 (COVID-19) epidemic in the United States has disproportionately impacted communities of color across the country. Focusing on COVID-19-attributable mortality, we expand upon a national comparative analysis of years of potential life lost (YPLL) attributable to COVID-19 by race/ethnicity (Bassett et al., 2020), estimating percentages of total YPLL for non-Hispanic Whites, non-Hispanic Blacks, Hispanics, non-Hispanic Asians, and non-Hispanic American Indian or Alaska Natives, contrasting them with their respective percent population shares, as well as age-adjusted YPLL rate ratios—anchoring comparisons to non-Hispanic Whites—in each of 45 states and the District of Columbia using data from the National Center for Health Statistics as of 30 December 2020. Using a novel Monte Carlo simulation procedure to perform estimation, our results reveal substantial racial/ethnic disparities in COVID-19-attributable YPLL across states, with a prevailing pattern of non-Hispanic Blacks and Hispanics experiencing disproportionately high and non-Hispanic Whites experiencing disproportionately low COVID-19-attributable YPLL. Furthermore, estimated disparities are generally more pronounced when measuring mortality in terms of YPLL compared to death counts, reflecting the greater intensity of the disparities at younger ages. We also find substantial state-to-state variability in the magnitudes of the estimated racial/ethnic disparities, suggesting that they are driven in large part by social determinants of health whose degree of association with race/ethnicity varies by state.

Is Music Teacher Professional Development Becoming More Effective? Evaluating Practice and Policy in the United States, 1993–2012

2020 ◽  
pp. 002242942098252
Author(s):  
Justin J. West
Keyword(s):  
Professional Development ◽  
United States ◽  
Social Interaction ◽  
Teacher Professional Development ◽  
The United States ◽  
Music Teacher ◽  
Policy Practice ◽  
Teacher Professional ◽  
Nationally Representative ◽  
Using Data

The purpose of this study was to evaluate music teacher professional development (PD) practice and policy in the United States between 1993 and 2012. Using data from the nationally representative Schools and Staffing Survey (SASS) spanning these 20 years, I examined music teacher PD participation by topic, intensity, relevance, and format; music teachers’ top PD priorities; and the reach of certain PD-supportive policies. I assessed these descriptive results against a set of broadly agreed-on criteria for “effective” PD: content specificity, relevance, voluntariness/autonomy, social interaction, and sustained duration. Findings revealed a mixed record. Commendable improvements in content-specific PD access were undercut by deficiencies in social interaction, voluntariness/autonomy, sustained duration, and relevance. School policy, as reported by teachers, was grossly inadequate, with only one of the nine PD-supportive measures appearing on SASS reaching a majority of teachers in any given survey year. Implications for policy, practice, and scholarship are presented.

Political beliefs, views about technocracy, and energy and climate policy preferences

2020 ◽  
pp. 096366252097856
Author(s):  
Matthew C. Nowlin
Keyword(s):  
United States ◽  
Decision Making ◽  
Representative Sample ◽  
Significant Interaction ◽  
The United States ◽  
Energy Sources ◽  
Political Beliefs ◽  
Climate Policies ◽  
Using Data ◽  
Energy And Climate Policy

The use of technocratic decision-making, where policy decisions are made by elite experts, is an important aspect of policymaking in the United States. However, little work has examined public opinion about technocracy. Using data from a representative sample of the United States ( n = 1200), I explore differences in support for technocracy and the implications of that support for views about politically controversial energy sources and climate policies. Overall, I find that liberal Democrats, moderate/conservative Democrats, and moderate/liberal Republicans were more likely than conservative Republicans and moderate independents to support technocratic decision-making. In addition, I find that as support for technocracy increases, so does support for energy sources and climate policies; however, there are significant interaction effects across political beliefs.

John Leighton Stuart and U.S.-Chinese Communist Rapprochement in 1949: Was There Another “Lost Chance in China”?

1982 ◽  
Vol 89 ◽  
pp. 74-96 ◽  
Author(s):  
Yu-ming Shaw
Keyword(s):  
United States ◽  
Cold War ◽  
The United States ◽  
Mao Zedong ◽  
Working Relationship ◽  
Republic Of China ◽  
The Many ◽  
The One ◽  
June July ◽  
The Cold War

Reverend John Leighton Stuart (1876–1962) served as U.S. ambassador to China from July 1946 until August 1949. In the many discussions of his ambassadorship the one diplomatic mission that has aroused the most speculation and debate was his abortive trip to Beijing, contemplated in June–July 1949, to meet with Mao Zedong and Zhou Enlai. Some students of Sino-American relations have claimed that had this trip been made the misunderstanding and subsequent hostility between the United States and the People's Republic of China in the post-1949 period could have been avoided; therefore, the unmaking of this trip constituted another “lost chance in China” in establishing a working relationship between the two countries. But others have thought that given the realities of the Cold War in 1949 and the internal political constraints existing in each country, no substantial result could have been gained from such a trip. Therefore, the thesis of a “lost chance in China” was more an unfounded speculation than a credible affirmation.

Overeducation and the Earnings of Black, Hispanic, and White Male Workers

1988 ◽  
Vol 31 (2) ◽  
pp. 190-212 ◽  
Author(s):  
Richard R. Verdugo ◽  
Naomi Turner Verdugo
Keyword(s):  
United States ◽  
Mexican Americans ◽  
Minority Groups ◽  
Puerto Ricans ◽  
White Male ◽  
The United States ◽  
Using Data ◽  
The Impact ◽  
Male Workers ◽  
White Minority

This study addresses two issues: (1) the impact of overeducation on the earnings of male workers in the United States, and (2) white-minority earnings differences among males. Given that educational attainment levels are increasing among workers, there is some suspicion that earnings returns to education are not as great as might be expected. This topic is examined by including an overeducation variable in an earnings function. Regarding the second issue addressed in this article, little is actually known about white-minority differences because the bulk of such research compares whites and blacks. By including selected Hispanic groups in this analysis (Mexican Americans, Puerto Ricans, Cubans, and Other Hispanics) we are able to assess white-minority earnings differences to a greater degree. Using data from a 5% sample of the 1980 census to estimate an earnings function, we find that overeducated workers earn less than either undereducated or adequately educated workers. Second, we find that there are substantial earnings differences between whites and minorities, and, also, between the five minority groups examined.

The Labor Market Skills of Recent Male Immigrants: Evidence from the Current Population Survey

ILR Review ◽  
1995 ◽  
Vol 48 (4) ◽  
pp. 792-811 ◽  
Author(s):  
Edward Funkhouser ◽  
Stephen J. Trejo
Keyword(s):  
United States ◽  
Labor Market ◽  
Current Population Survey ◽  
Population Survey ◽  
Census Data ◽  
The United States ◽  
Skill Levels ◽  
Recent Immigrants ◽  
Current Population ◽  
Using Data

Using data from special supplements to the Current Population Survey (CPS), the authors track the education and hourly earnings of recent male immigrants to the United States. In terms of these measures of labor market skills, the CPS data suggest that immigrants who came in the late 1980s were more skilled than those who arrived earlier in the decade. This pattern represents a break from the steady decline in immigrant skill levels observed in 1940–80 Census data. Despite the encouraging trend over the 1980s, however, the average skills of recent immigrants remain low by historical standards.

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