The standard matching model successfully describes how the labor market func-tions, but it has at least two major problems. First, unemployment and vacancies areas volatile as labor productivity yet the aggregate data illustrates that they are muchmore volatile by a factor of 20. Second, the wage dispersion magnitudes occurringthroughout the micro databases the ratio between average wage paid and lowest wagepaid is at least 2 times greater than that predicted by the calibrated model. Thispaper proves that within a two-side asymmetric information environment, the take-it-or-leave-it offer mechanism effectively amplifies wage dispersion but it is unable toamplify unemployment volatility. Intuitively, through possessing private information,both firms and workers will make only modest wage offers to avoid separation, a mech-anism that increases the mean-to-min ratio. When aggregate productivity increases,low productivity firms make more generous offers than those with high productivity,while high amenity workers require more than the low ones. Average wage consequently closely follows aggregate productivity, implying little job creation.

We model and estimate the extent to which the corporate income tax aects worker?swages under imperfect competition. We construct our dataset on individual and industrycharacteristics using the Current Population Survey and Commerce Department data forthe years 1982, 1992 and 1997. Identi?cation comes from variation in the eective tax ratesacross industry and time. Our empirical results suggest that labor shares the burden ofcorporate taxes. Consistent with our theoretical prediction, the shifting of the tax to laborintensi?es with the degree of market concentration. Accounting for the eect of imperfectcompetition measured by the concentration ratio, a ten percent increase in the marginaleective corporate tax rate decreases weekly wages by 0:048 percent. We further providesome direct evidence that labor shares a signi?cant portion of the corporate income taxburden.0

Under competitive labor markets, workers should be paid according to their productivity,regardless of other personal characteristics. This, however, is not the case and has beenwidely reported in the literature. This paper reviews empirical evidence and methods ofestimation for sectoral wage differentials. Moreover, it shows estimates of suchdifferentials for the United States using CPS data from 1968 to 2008. The presence ofindustry wage differentials is certain, although under certain econometric techniques, itsmagnitude is reduced in favor of unobserved worker and firm characteristics.

In this chapter, we assess the contribution of immigration over the past three and a half decades to poverty in the United States. We first document trends in poverty rates among the native-born by race and ethnicity and poverty trends among all immigrants, recent immigrants, and immigrants by their region and (in some instances) country of origin. Next, we assess how . . .

Background: The objective of this study was to determine the disease burden of sinusitis relative to other medical conditions. Methods: The adult sample of the National Health Interview Survey for calendar years 1997 to 2006 was analyzed, extracting 1-year prevalence data for the disease conditions sinusitis, hay fever, peptic ulcer, acute asthma, and chronic bronchitis. Disease burden data for emergency room visits, general and specialist visits, health care spending, and workdays lost were also extracted. The influence of each disease condition oil disease burden variables was statistically determined. Comparisons among outcomes variables were conducted across disease conditions to determine their relative economic and health care impacts. Results: Adult patients were studied (313,982; mean age, 45.2 years). The 1-year disease prevalences were: sinusitis (15.2%), hay fever (8.9%), ulcer (2.4%), acute asthma (3.8%), and chronic bronchitis (4.8%). Patients with sinusitis were significantly more likely to: visit the emergency room (22.7% versus 17.4%, p 0.05), and health care spending with sinusitis was significantly greater than that of ulcer disease, acute asthma, and hay fever (p < 0.004). Conclusions: Sinusitis imparts a significant disease burden both within and outside of the health care system that is comparable with or exceeds that of other conditions commonly thought to be more serious. (Am J Rhinol Allergy 23, 392-395, 2009; doi: 10.2500/ajra.2009.23.3355)

With the sound development of tourism in China, "the construction of barrier-free tourism area" has become the common target for most regions in China. After years of exploration, most regions find that the key point to solve the problem is to eliminate the "tourism barrier". However, the researches on such problems have not been found yet. By analyzing different point of views, the paper concludes that the features of regional tourism barriers are the inconsistency of traveling, unequal sources of information, poor quality of services, and the localization of management. From the perspective of political administration division, tourism management and tourism economics, the paper presents out the definition of regional tourism barrier, and the factors influencing the occurrence and development of the regional tourism barrier. Also, the paper cleans out that those problems are not caused by the political zoning system in China, but by the regional market segmentation due to the patterns of the relationship between government and market. The political zoning system in China is the basic governance system, and those political administration regions are endowed with the rights of organizing its economical activities. As the growing of the economical power of those regions, there come more economical competitions among those regions. So, many of these regions made some regional policies so as to protect its economical benefits, however, most of those policies are harmful to the economical development of the country as a whole. Those regional economical policies cause the bases of regional tourism barriers. Thus, the paper holds that to eliminate regional tourism barrier, the market competition should be standardized, the credibility of tourism market must be advanced, the quality of tourism service must be promoted, meanwhile, the regional tourism transportation and the tourism information communication must be perfected on the base of the . . .

Objectives:Determine associations between air quality and the prevalence of hay fever and sinusitis.Study Design:Cross-sectional study.Methods:The National Health Interview Survey for the calendar years 19972006 adult sample was analyzed to determine for each calendar year the one-year period prevalence of the two respiratory conditions, hay fever and sinusitis and the nonrespiratory (control) condition, weak/failing kidneys. From the Environmental Protection Agency, yearly historical data for air quality criteria pollutants, carbon monoxide, nitrous dioxide, sulfur dioxide, and particulate matter, were tabulated. Graphical and linear regression analyses were conducted for each disease condition against each of the air quality variables to determine if higher pollutant concentrations predicted a higher prevalence for the disease condition.Results:A total of 313,982 patients were studied over the 10 calendar years 19972006. Mean patient age increased very slightly from year to year (overall average, 45.2 years); the percentage of female patients remained the same. The air concentrations of each of the criteria pollutants decreased steadily over time with the exception of particular matter, which reached a plateau in the most recent 3 years. For each of the disease conditions a statistically significant relationship with air quality (all p < .001) was obtained. For the control condition of kidney failure/weakening, the standardized regression coefficient with air quality was very small (range: -0.0010.004). For hay fever and sinusitis, substantially larger coefficients were obtained ranging from 0.0120.016 and 0.0130.027, respectively.Conclusions:Prevalence of hay fever and sinusitis are correlated with air quality. Improvements in air quality are associated with decreased prevalence of both hay fever and sinusitis. Laryngoscope, 2009

Large inflows of less educated immigrants may reduce wages paidto comparably-educated, native-born workers. However, if less educatedforeign- and native-born workers specialize in different productiontasks, because of different abilities, immigration will causenatives to reallocate their task supply, thereby reducing downwardwage pressure. Using occupational task-intensity data from theO*NET dataset and individual US census data, we demonstrate thatforeign-born workers specialize in occupations intensive in manualphysicallabor skills while natives pursue jobs more intensive incommunication-language tasks. This mechanism can explain whyeconomic analyses find only modest wage consequences of immigrationfor less educated native-born workers.

Objectives/Hypothesis:Determine if increasing annual temperature is associated with an increase in the prevalence of otolaryngologic respiratory diseases.Study Design:Cross-sectional study.Methods:Patients and disease variables were extracted from the National Health Interview Survey for the calendar years 1998 to 2006 adult sample. Corresponding average annual temperature statistics were obtained from the National Climatic Data Center. The disease prevalences of hay fever, sinusitis, chronic bronchitis, and jaw/face pain (control group) were determined and tabulated according to mean annual temperature and compared graphically. Regression analysis for disease prevalence according to mean annual temperature was conducted.Results:A total of 851,584 adults were sampled with a mean age of 35.7 years and a male:female ratio of 0.93:1. The overall disease prevalences for the disease conditions across all years of the study were (95% confidence interval): hay fever (9.2% 0.1%), sinusitis (15.0% 0.2%), chronic bronchitis (4.5% 0.1%) and pain in jaw/front of ear (4.5% 0.1%). Regression analysis did not find a significant relationship between average annual temperature and the prevalence of disease for hay fever, jaw pain, or chronic bronchitis. A statistically significant but small regression coefficient (0.004) was noted for an increasing prevalence of sinusitis with increasing annual temperature (P = .031).Conclusions:Changes in mean annual temperature did not influence the prevalence of hay fever but did influence the prevalence of sinusitis over a 9-year period. Given the strong prevalence of hay fever and sinusitis, the effect of global warming on the otolaryngologic disease deserves continued epidemiologic surveillance. Laryngoscope, 2009

Comparative study of the labor insertion of Latin American qualified migrants in the United States, 1990-2000A study on labor insertion of Latin American qualified worker immigrants between 1990 and 2000; the researched in based on a sample of five percent of the US PopulationCensus and takes as a referent those born in the United States and India. The labor insertion of qualified immigrants by means of comparative determination is evaluated; in the explanation of this phenomenon aspectsof human capital, demographic and context are taken into account. By means of the application of logistic regression models the probability of labor insertion is described.Key words: globalization, segmented labor market, qualified employment, unqualified employment, sub-utilization, India, United States, South America, Central America, Caribbean, Mexico.

Using data from the American Community Survey of the U.S. Census from 2000 to 2007 we analyze the occupational distribution of Latino immigrants and their associated prestige ranking by degree status in comparison to U.S. born Latinos. We find dramatic gaps in the occupational distribution and prestige rankings among Latinos with similar postsecondary attainment levels by citizenship status. In addition, the data indicate that for U.S.-born Latinos who have a bachelor's degree, the return on this investment, at least in the form of prestige of occupational sector and rating, is larger than for other groups examined. The return on a bachelor's degree for those Latinos born in the U.S, however, may differ by state context and availability of labor market opportunities.

This Capstone team examined the economic consequences of the high number of high school dropouts in Texas. Their report discusses alternative strategies for measuring the dropout rate, and provides estimates of the dropout rate for different geographic regions and student populations. The team also estimated of the economic benefits and costs associated with reducing the high dropout rate in Texas. Finally, the team reviewed available research regarding dropout prevention programs in order to identify best practices that could be implemented in Texas. One goal of the study was to inform and encourage a broader discussion by the Texas Legislature of the state's high school dropout rate and the societal and economic impact of failing to address the problem.

The shuffle model is recently proposed to address the issue of severe utility loss in Local Differential Privacy (LDP) due to distributed data this http URL the shuffle model, a shuffler is utilized to break the link between the user identity and the message uploaded to the data analyst. Since less noise needs to be introduced to achieve the same privacy guarantee, following this paradigm, the utility of privacy-preserving data collection is improved. We propose DUMP (\underline{DUM}my-\underline{P}oint-based), a framework for privacy-preserving histogram estimation in the shuffle model. The core of DUMP is a new concept of \emph{dummy blanket}, which enables enhancing privacy by just introducing \textit{points }on the user side and further improving the utility of the shuffle model.We instantiate DUMP by proposing two protocols: pureDUMP and mixDUMP, and conduct a comprehensive experimental evaluation to compare them with existing protocols. The experimental results show that, under the same privacy guarantee, (1) the proposed protocols have significant improvements in communication efficiency over all existing multi-message protocols, by at least 3 orders of magnitude; (2) they achieve competitive utility, while the only known protocol (Ghazi \textit{et al.}, PMLR 2020) having better utility than ours employs hard-to-exactly-sample distributions which are vulnerable to floating-point attacks (CCS 2012).

This paper studies long-term trends in the labor market performance of immigrants in the United States, using the 1960-2000 PUMS and 1994-2009 CPS. While there was a continuous decline in the earnings of new immigrants 1960-1990, the trend reversed in the 1990s, with newcomers doing as well in 2000, relative to natives, as they had 20 years earlier. This improvement in immigrant performance is not explained by changes in origin-country composition, educational attainment or state of residence. Changes in labor market conditions, including changes in the wage structure which could differentially impact recent arrivals, can account for only a small portion of it. The upturn appears to have been caused in part by a shift in immigration policy toward high-skill workers matched with jobs, an increase in the earnings of immigrants from Mexico, and a decline in the earnings of native high school dropouts. However, most of the increase remains a puzzle. Results from the CPS suggest that, while average entry wages fell again after 2000, correcting for simple changes in the composition of new immigrants, the unexplained rise in entry wages has persisted.

Background: The objective of this study was to determine the disease burden of sinusitis relative to other medical conditions. Methods: The adult sample of the National Health Interview Survey for calendar years 1997 to 2006 was analyzed, extracting 1-year prevalence data for the disease conditions sinusitis, hay fever, peptic ulcer, acute asthma, and chronic bronchitis. Disease burden data for emergency room visits, general and specialist visits, health care spending, and workdays lost were also extracted. The influence of each disease condition oil disease burden variables was statistically determined. Comparisons among outcomes variables were conducted across disease conditions to determine their relative economic and health care impacts. Results: Adult patients were studied (313,982; mean age, 45.2 years). The 1-year disease prevalences were: sinusitis (15.2%), hay fever (8.9%), ulcer (2.4%), acute asthma (3.8%), and chronic bronchitis (4.8%). Patients with sinusitis were significantly more likely to: visit the emergency room (22.7% versus 17.4%, p 0.05), and health care spending with sinusitis was significantly greater than that of ulcer disease, acute asthma, and hay fever (p < 0.004). Conclusions: Sinusitis imparts a significant disease burden both within and outside of the health care system that is comparable with or exceeds that of other conditions commonly thought to be more serious. (Am J Rhinol Allergy 23, 392-395, 2009; doi: 10.2500/ajra.2009.23.3355)

frican American males occupy a historically unique social position, whether in school life, on the job, or within the context of dating, marriage and family. Often, their normal role expectations require that they perform feminized and hypermasculine roles simultaneously. This book focuses on how African American males experience masculinity politics, and how U.S. sexism and racial ranking influences relationships between black and white males, as well as relationships with black and white women. By considering the African American male experience as a form of sexism, Lemelle proposes that the only way for the social order to successfully accommodate African American males is to fundamentally eliminate all sexism, particularly as it relates to the organization of families.

We examine how differences in state income tax rates, as well as other state and local taxes and pub- lic service expenditures, influence the choice of state of residence for households (federal tax filers) moving into multistate metropolitan statistical areas (MSA) using data from the one in twenty sample of the 2000 Census of Population and Housing microdata extracted from the Integrated Public Use Microdata Series (IPUMS). MSAs that are on borders provide a spatial discontinuity – discrete differences in state tax rates within a single labor market. These MSAs allow residents to live in one state and work in another state. After controlling for other factors believed to affect household location, we find that differences in state income tax rates have a statistically significant impact on the probability a household locates in the low tax state within an MSA.