Iowa EHDI News, Fall 2009

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Iowa EHDI News, Fall 2010

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Iowa EHDI News, Fall 2011

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Screening for occupational asthma by using a self-administered questionnaire in a clinical setting

OBJECTIVE: Because of its high prevalence, early screening for occupational asthma (OA) is crucial. We aimed to evaluate the screening performance of the Occupational Asthma Screening Questionnaire-11 items (OASQ-11) in a clinical setting. METHODS: Between January 2009 and December 2011, 169 workers referred for potential OA to our hospital completed the OASQ-11 and underwent workups to determine the final diagnosis. The discriminative abilities of the OASQ-11 as a whole and in relation to demographic and exposure parameters were determined by the area under the receiving operator characteristic curve (AUC). RESULTS: Model 1, consisting of the OASQ's items, showed fair discrimination (AUC, 0.69; 95% confidence interval, 0.58 to 0.80). Addition of age and exposure duration to model 1 improved discrimination (AUC, 0.80; confidence interval, 0.72 to 0.88). CONCLUSION: A simple model consisting of the OASQ-11's items, age, and exposure duration could well discriminate subjects with OA in a clinical setting.

Iowa EHDI News, Spring 2010

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Iowa EHDI News, Spring 2011

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Iowa EHDI News, Summer 2009

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Iowa EHDI News, Summer 2010

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Iowa EHDI News, Summer 2011

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Iowa EHDI News, Winter 2009

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Iowa EHDI News, Winter 2010

The purpose of the newsletter is to communicate with parents and professionals about newborn hearing screening and follow up in Iowa. We will share information about: Hearing screenings Early intervention, including communication opportunities Resources available for parents and professionals “Best practices” by hospitals, Area Education Agencies (AEAs), private practice audiology offi ces or other health and education providers working with children who are deaf or hard of hearing National research Iowa EHDI program goals EHDI program progress, system development, evaluation Family stories Highlights from the EHDI Advisory Committee

Evaluating Roadway Subsurface Drainage Practices, 2013

The bearing capacity and service life of a pavement is affected adversely by the presence of undrained water in the pavement layers. In cold winter climates like in Iowa, this problem is magnified further by the risk of frost damage when water is present. Therefore, well-performing subsurface drainage systems form an important aspect of pavement design by the Iowa Department of Transportation (DOT). However, controversial findings are also reported in the literature regarding the benefits of subsurface drainage. The goal of this research was not to investigate whether subdrains are needed in Iowa pavements, but to conduct an extensive performance review of primary interstate pavement subdrains in Iowa, determine the cause of the problem if there are drains that are not functioning properly, and investigate the effect of poor subdrain performance due to improper design, construction, and maintenance on pavement surface distresses, if any. An extensive literature review was performed covering national-level and state-level research studies mainly focusing on the effects of subsurface drainage on performance of asphalt and concrete pavements. Several studies concerning the effects of a recycled portland cement concrete (RPCC) subbase on PCC pavement drainage systems were also reviewed. A detailed forensic test plan was developed in consultation with the project technical advisory committee (TAC) for inspecting and evaluating the Iowa pavement subdrains. Field investigations were conducted on 64 selected (jointed plain concrete pavement/JPCP and hot-mix asphalt/HMA) pavement sites during the fall season of 2012 and were mainly focused on the drainage outlet conditions. Statistical analysis was conducted on the compiled data from field investigations to further investigate the effect of drainage on pavement performance. Most Iowa subsurface drainage system outlet blockage is due to tufa, sediment, and soil. Although higher blockage rates reduce the flow rate of water inside outlet pipes, it does not always stop water flowing from inside the outlet pipe to outside the outlet pipe unless the outlet is completely blocked. Few pavement surface distresses were observed near blocked subsurface drainage outlet spots. More shoulder distresses (shoulder drop or cracking) were observed near blocked drainage outlet spots compared to open ones. Both field observations and limited performance analysis indicate that drainage outlet conditions do not have a significant effect on pavement performance. The use of RPCC subbase in PCC pavements results in tufa formation, a primary cause of drainage outlet blockage in JPCP. Several useful recommendations to potentially improve Iowa subdrain performance, which warrant detailed field investigations, were made

Evaluating Roadway Subsurface Drainage Practices: Tech Transfer Summary, 2013.

The bearing capacity and service life of a pavement is affected adversely by the presence of undrained water in the pavement layers. In cold winter climates like in Iowa, this problem is magnified further by the risk of frost damage when water is present. Therefore, well-performing subsurface drainage systems form an important aspect of pavement design by the Iowa Department of Transportation (DOT). However, controversial findings are also reported in the literature regarding the benefits of subsurface drainage. The goal of this research was not to investigate whether subdrains are needed in Iowa pavements, but to conduct an extensive performance review of primary interstate pavement subdrains in Iowa, determine the cause of the problem if there are drains that are not functioning properly, and investigate the effect of poor subdrain performance due to improper design, construction, and maintenance on pavement surface distresses, if any. An extensive literature review was performed covering national-level and state-level research studies mainly focusing on the effects of subsurface drainage on performance of asphalt and concrete pavements. Several studies concerning the effects of a recycled portland cement concrete (RPCC) subbase on PCC pavement drainage systems were also reviewed. A detailed forensic test plan was developed in consultation with the project technical advisory committee (TAC) for inspecting and evaluating the Iowa pavement subdrains. Field investigations were conducted on 64 selected (jointed plain concrete pavement/JPCP and hot-mix asphalt/HMA) pavement sites during the fall season of 2012 and were mainly focused on the drainage outlet conditions. Statistical analysis was conducted on the compiled data from field investigations to further investigate the effect of drainage on pavement performance. Most Iowa subsurface drainage system outlet blockage is due to tufa, sediment, and soil. Although higher blockage rates reduce the flow rate of water inside outlet pipes, it does not always stop water flowing from inside the outlet pipe to outside the outlet pipe unless the outlet is completely blocked. Few pavement surface distresses were observed near blocked subsurface drainage outlet spots. More shoulder distresses (shoulder drop or cracking) were observed near blocked drainage outlet spots compared to open ones. Both field observations and limited performance analysis indicate that drainage outlet conditions do not have a significant effect on pavement performance. The use of RPCC subbase in PCC pavements results in tufa formation, a primary cause of drainage outlet blockage in JPCP. Several useful recommendations to potentially improve Iowa subdrain performance, which warrant detailed field investigations, were made.

How to Reduce Tire-Pavement Noise: Better Practices for Constructing and Texturing Concrete Pavement Surfaces, TPF-5(139), 2012

Concrete pavements can be designed and constructed to be as quiet as any other conventional pavement type in use today. This report provides an overview of how this can be done—and done consistently. In order to construct a quieter concrete pavement, the texture must have certain fundamental characteristics. While innovative equipment and techniques have shown promise for constructing quieter pavements in the future, quieter concrete pavements are routinely built today all across the United States using the following standard nominal concrete pavement textures: drag, longitudinal tining, diamond grinding, and even, to limited extent, transverse tining. This document is intended to serve as a guide that describes better practices for designing, constructing, and texturing quieter concrete pavements.