Report on a special investigation of the Assistant Director of the Camp Adventure program at the University of Northern Iowa for the period January 1, 2006 through March 31, 2008

Report on a special investigation of the Assistant Director of the Camp Adventure program at the University of Northern Iowa for the period January 1, 2006 through March 31, 2008

Public and private saving and investment

We decompose aggregate saving and investment into its publicand private components and then document a variety of ``stylized facts''associated with saving and investment rates for a sample of15 countries over the period 1975--1989. In order to seewhether these empirical relationships are consistent with aworld of perfect capital mobility we develop a multi--countrymodel with free trade in a riskfree bond and calibrate it tothe fifteen OECD countries. We pay special attential tomodeling the fiscal policy rules. The model performsremarkably well in accounting for a wide variety of timeseries relationships. Nonetheless the model is not able to capture the crosssectional aspect of the data. In particular, the model cannot accountfor both the large cross country correlation between aggregate saving and investmentrates and the very negative cross country relationship between the public andprivate saving minus investment gaps.

Special investigation of the Monticello Ambulance Service for the period July 1, 2005 through November 9, 2007

Special investigation of the Monticello Ambulance Service for the period July 1, 2005 through November 9, 2007

Report on a special investigation of the Engineering Communications and Marketing Department (ECM) of Iowa State University of Science and Technology for the period January 1, 2003 through December 31, 2007

Report on a special investigation of the Engineering Communications and Marketing Department (ECM) of Iowa State University of Science and Technology for the period January 1, 2003 through December 31, 2007

A finite-population revenue management model and a risk-ratio procedure for the joint estimation of population size and parameters

Many dynamic revenue management models divide the sale period into a finite number of periods T and assume, invoking a fine-enough grid of time, that each period sees at most one booking request. These Poisson-type assumptions restrict the variability of the demand in the model, but researchers and practitioners were willing to overlook this for the benefit of tractability of the models. In this paper, we criticize this model from another angle. Estimating the discrete finite-period model poses problems of indeterminacy and non-robustness: Arbitrarily fixing T leads to arbitrary control values and on the other hand estimating T from data adds an additional layer of indeterminacy. To counter this, we first propose an alternate finite-population model that avoids this problem of fixing T and allows a wider range of demand distributions, while retaining the useful marginal-value properties of the finite-period model. The finite-population model still requires jointly estimating market size and the parameters of the customer purchase model without observing no-purchases. Estimation of market-size when no-purchases are unobservable has rarely been attempted in the marketing or revenue management literature. Indeed, we point out that it is akin to the classical statistical problem of estimating the parameters of a binomial distribution with unknown population size and success probability, and hence likely to be challenging. However, when the purchase probabilities are given by a functional form such as a multinomial-logit model, we propose an estimation heuristic that exploits the specification of the functional form, the variety of the offer sets in a typical RM setting, and qualitative knowledge of arrival rates. Finally we perform simulations to show that the estimator is very promising in obtaining unbiased estimates of population size and the model parameters.

Agreed upon procedures report on the City of Ralston, Iowa for the period July 1, 2007 through August 31, 2008

Agreed upon procedures report on the City of Ralston, Iowa for the period July 1, 2007 through August 31, 2008

Report on a special investigation of the City of Ames Electric Department for the period July 1, 2003 through January 7, 2008

Report on a special investigation of the City of Ames Electric Department for the period July 1, 2003 through January 7, 2008

Report on a special investigation of the Wayne County Conservation Department for the period July 1, 2005 through July 30, 2008

Report on a special investigation of the Wayne County Conservation Department for the period July 1, 2005 through July 30, 2008

Special report on the Dunkerton Community School District for the period July 1, 2005 through December 31, 2008

Special report on the Dunkerton Community School District for the period July 1, 2005 through December 31, 2008

Special investigation of Jasper County Transit for the period April 1, 2004 through April 1, 2006

Special investigation of Jasper County Transit for the period April 1, 2004 through April 1, 2006

Modeling complex wells with the multi-scale finite-volume method

In this paper, an extension of the multi-scale finite-volume (MSFV) method is devised, which allows to Simulate flow and transport in reservoirs with complex well configurations. The new framework fits nicely into the data Structure of the original MSFV method,and has the important property that large patches covering the whole well are not required. For each well. an additional degree of freedom is introduced. While the treatment of pressure-constraint wells is trivial (the well-bore reference pressure is explicitly specified), additional equations have to be solved to obtain the unknown well-bore pressure of rate-constraint wells. Numerical Simulations of test cases with multiple complex wells demonstrate the ability of the new algorithm to capture the interference between the various wells and the reservoir accurately. (c) 2008 Elsevier Inc. All rights reserved.

Special investigation of the Searsboro Volunteer Fire/EMS Department for the period February 8, 2005 through September 21, 2008

Special investigation of the Searsboro Volunteer Fire/EMS Department for the period February 8, 2005 through September 21, 2008

Report on a review of selected general and application controls over the Iowa Department of Transportation’s Contractor Pay System for the period May 5, 2008 through July 31, 2008

Report on a review of selected general and application controls over the Iowa Department of Transportation’s Contractor Pay System for the period May 5, 2008 through July 31, 2008

Report on the review of selected general and application controls over the State University of Iowa PeopleSoft Human Resources Information System (HRIS) for the period June 3, 2008 through July 25, 2008

Report on the review of selected general and application controls over the State University of Iowa PeopleSoft Human Resources Information System (HRIS) for the period June 3, 2008 through July 25, 2008

Report on the Community Development Block Grant and Home Investment Partnerships Programs administered by the Region XII Council of Governments for the period July 1, 2005 through November 21, 2008

Report on the Community Development Block Grant and Home Investment Partnerships Programs administered by the Region XII Council of Governments for the period July 1, 2005 through November 21, 2008