The vanishing procyclicality of labor productivity

We document three changes in postwar US macroeconomic dynamics: (i) theprocyclicality of labor productivity has vanished, (ii) the relative volatility of employment has risen, and (iii) the relative (and absolute) volatility of the real wagehas risen. We propose an explanation for all three changes that is based on a common source: a decline in labor market frictions. We develop a simple model withlabor market frictions, variable effort, and endogenous wage rigidities to illustratethe mechanisms underlying our explanation. We show that the reduction in frictionsmay also have contributed to the observed decline in output volatility.

Audit report on the Iowa Federal Family Education Loan Program Division, a Division of the Iowa College Student Aid Commission, for the year ended June 30, 2007

Audit report on the Iowa Federal Family Education Loan Program Division, a Division of the Iowa College Student Aid Commission, for the year ended June 30, 2007

Wireless E911 Emergency Communications Fund Iowa Homeland Security and Emergency Management Division of the Iowa Department of Public Defense independent auditor's reports, basic financial statements and supplementary information, June 30, 2007.

Audit report on the Wireless E911 Emergency Communication Fund of the Iowa Homeland Security and Emergency Management Division of the Iowa Department of Public Defense for the year ended June 30, 2007

Loss of phenotypic plasticity generates genotype-caste association in harvester ants.

Caste differentiation and reproductive division of labor are the hallmarks of insect societies. In ants and other social Hymenoptera, development of female larvae into queens or workers generally results from environmentally induced differences in gene expression. However, several cases in which certain gene combinations may determine reproductive status have been described in bees and ants. We investigated experimentally whether genotype directly influences caste determination in two populations of Pogonomyrmex harvester ants in which genotype-caste associations have been observed. Each population contains two genetic lineages. Queens are polyandrous and mate with males of both lineages , but in mature colonies, over 95% of daughter queens have a pure-lineage genome, whereas all workers are of F1 interlineage ancestry. We found that this pattern is maintained throughout the colony life cycle, even when only a single caste is being produced. Through controlled crosses, we demonstrate that pure-lineage eggs fail to develop into workers even when interlineage brood are not present. Thus, environmental caste determination in these individuals appears to have been lost in favor of a hardwired genetic mechanism. Our results reveal that genetic control of reproductive fate can persist without loss of the eusocial caste structure.

Report of recommendations to the Iowa Department of Education, Division of Vocational Rehabilitation Services, June 30, 2007

Report on the Iowa Department of Education, Division of Vocational Rehabilitation Services for the year ended June 30, 2007

Department of Commerce - Division of Banking Performance Plan, FY 2009

Agency Performance Plan, Department of Commerce - Division of Banking

Department of Human Rights – Division of Central Administration Performance Plan, FY 2009

Agency Performance Plan, Department of Human Rights – Division of Central Administration

Division of Criminal and Juvenile Justice Planning, Department of Human Rights Performance Plan, FY 2009

Agency Performance Plan, Division of Criminal and Juvenile Justice Planning, Department of Human Rights

Department of Human Rights, Division of Community Action Agencies Performance Plan, FY 2009

Agency Performance Plan, Department of Human Rights, Division of Community Action Agencies

Division of Persons with Disabilities Performance Plan, FY 2009

Agency Performance Plan, Division of Persons with Disabilities

Department of Human Rights Division of Latino Affairs, FY 2009

Agency Performance Plan, Department of Human Rights Division of Latino Affairs

Iowa Division of Criminal and Juvenile Justice Planning, Strategic Plan, 2007

This report outlines the strategic plan for Iowa Division of Criminal and Juvenile Justice Planning including,goals and mission.

Iowa Division of Community Action Agencies, Strategic Plan, 2003

This report outlines the strategic plan for Iowa Division of Community Action Agenciesg including,goals and mission.

Iowa Division of Latino Affairs, Strategic Plan, 2003

This report outlines the strategic plan for Iowa Division of Latino Affairs including, goals and mission.