Estimating expected sojourn times for a markov renewal process

We consider the estimation of the expected sojourn time in a Markov renewal process under the data condition that only the counts of the exits from the states are available for fixed intervals of time. For analytical and illustrative purposes we concentrate on the two-state process case. We present least squares and method of moments estimators and compare their statistical properties both analytically and empirically. We also present modified estimators with improved properties based upon an overlapping interval sampling strategy. The major results indicate that the least squares estimator is biased in general with the bias depending on the size of the sampling interval and the first two moments of the sojourn time distribution function. The bias becomes negligible as the size of the sampling interval increases. Analytical and empirical results indicate that the method of moments estimator is less sensitive to the size of the sampling interval and has slightly better mean squared error properties than the least squares estimator.     

Ibrahim's story

The article details the personal and professional life of Ibrahim Muti'i (1920–2010), a well-known Uighur linguist. Through a series of interviews, Mr. Muti'i sketched the events he wanted to be remembered. Mr. Muti'i's life story corresponds with many of the significant events in Northwest China both in the Republican era (1911–1949) and the first decades of the People's Republic of China era.     

Bringing the Media in: Newspaper Readership and Human Rights*

Cross‐national studies examining human rights outcomes have seldom considered the role of the news media. This is unfortunate, as a large body of work in media studies suggests that the news industry effectively educates citizens, shapes public attitudes, and stimulates political action. I juxtapose these two literatures in a cross‐national context to examine the print media’s impact on a state’s human rights performance. First, examining micro‐level evidence from the World Values Survey, I show that an individual’s level of media consumption, including newspaper readership, is positively associated with participation in human rights organizations. Next, I present macro‐level evidence regarding the aggregate effect of a society’s newspaper readership on its human rights record. Analyzing an unbalanced dataset with a maximum of 459 observations across 138 countries covering four waves during the 1980–2000 period, I use ordered probit regression to examine the relationship between a state’s newspaper readership and its Amnesty International rating. I find that newspaper readership exerts strong, positive effects on a state’s human rights practices net of other standard predictors and temporal/regional controls. Moreover, the effect of readership is robust to a number of alternative specifications that address concerns with ceiling effects, measurement bias, influential observations, sample composition, mediation, endogeneity, and the impact of alternative forms of media consumption (i.e., the Internet and television).     

Using members’ dues for political purposes: The “paycheck protection” movement

Conclusion Both sides in the paycheck protection debate can make substantive, as opposed to political, arguments to support their positions. Supporters of paycheck protection measures argue that many workers disagree with the political positions their unions take, a point that is borne out by the scholarly research on members' attitudes towards politics. They contend that workers should have “the basic right to choose if and how their money is spent on political causes” (Kamburowski, 1998, p. 2). They further argue that ultimately it is an issue of fairness and choice and that “compelling workers to support causes they do not believe [in] violates the fundamental tenets of a free country” (Kamburowski, p. 2).     

The sociologist and the community developer: Autonomy and role conflict in qualitative research

Sociologists are being called upon to evaluate community development efforts in the United States at an increasing rate. These sociologists, as independent researchers, are working side by side with professional community development consultants. Based on an ongoing community development research project, which rests largely upon qualitative techniques, the roles of consultant and researcher are delineated. Methodological advantages and disadvantages of separating these roles are discussed. It is hypothesized that the presence of an independent research agent will likely produce four response phases on the part of the professional consultant during the course of the research project: (1) approval and support, (2) professional challenge, (3) apprehension, and (4) guarded acceptance. Suggestions are made regarding qualitative techniques that can minimize negative responses on the part of practitioners.     

Immigrant assimilation pre and post labour market entry: evidence from the UK Labour Force Survey

We estimate models of employment an earnings for a sample of white and non-white male immigrants drawn from the Labour Force Survey between 1993 and 2004. Immigrants who arrived to enter the labour market (labour market entrants) are distinguished from those who arrived to complete their education (education entrants). Diverse patterns of labour market assimilation are found depending on ethnicity and immigrant type. Amongst labour market entrants, whites do better than non-whites, whilst amongst education entrants, highly qualified prime-age non-whites perform as well as their white counterparts. Relative to white natives, labour market outcomes for all immigrant groups have a tendency to decline with age.

Immigration, education, and the future of the california workforce

In the decades after the second world war, California's highly educated workforce was a central part of the booming California economy, especially in the 1950s and 1960s when large numbers of migrants arrived from the Middle West and the East Coast. Now in the last decade of the twentieth century there is evidence that California's educational advantage may be shifting. The overall levels of education in California's workforce are decreasing relatively, with real implications for the future human capital of California. The data show lower education levels in California and a reversal of previous patterns when California's workforce was more educated than the nation as a whole. The implications for the future of California as a cutting edge economy are less clear, but it is possible that increasingly, California will be competing with other states for the fast-growing and well-paying jobs in the high technology sector. The future of the California workforce will be closely bound up with the education of the immigrant stock already in California and with the continuing flows from Mexico and Central America.     

Economic development and labor force participation of older persons

The effect of economic development on labor force participation rates of older men and women is examined using national data for 134 countries. The analysis provides new insights into the evolution of retirement patterns with rising personal income, slowing population growth, the aging of the population, and shifts in the composition of employment. The analysis indicates a negative relationship between per capita income and labor force participation rates. This relationship is stronger for older men than for older women and is most apparent among middle income countries. An older population is associated with lower participation rates for older men and higher widow rates produce higher participation rates among older women. Industrial changes such as a decline in the proportion of the labor force employed in agriculture lower the proportion of older persons in the labor force. Finally, national social security policies are shown to impact the proportion of older persons that remains in the labor force.