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Pedestrian Maintenance of Traffic for Designers
Get PDFThis presentation with summarize current guidance being developed for the maintenance of pedestrian traffic during construction. The presentation will provide designers with guidance on INDOT’s decision-making hierarchy and expectations related to the documentation and development of pedestrian maintenance of traffic plans
Influence of Core Temperature Changes During Whole-Body Warming and Cooling on Cutaneous Vascular Reactivity
Get PDFObjective: Endothelial function, the ability of cells of the vascular endothelial wall to secrete compounds, is linked with metabolic and cardiovascular disease risks. One of the most well-known noninvasive tests used to assess skin vascular reactivity as a measure of endothelial function is the reactive hyperemic response test (RHRT). However, there is lack of consensus regarding the impact of thermoregulation on endothelial (dys)function and the results from the RHRT. Thus, the aim of the present study was to investigate the impact of core temperature on cutaneous vascular reactivity, as assessed via the finger RHRT. Approach: Following a 15-minute baseline period, seven adults entered a water tank maintained at 42°C and passively rested in a semi-supine position. Thereafter, they entered a water tank maintained at 12°C. They were immersed until their rectal temperature (Tre) increased or decreased about 0.5°C above and below the baseline Tre respectively. This procedure was repeated twice and an occlusion was conducted during the baseline period and at the second repetition of water immersions. Main results: During the post-occlusion phase, skin blood flow (SkBF) was greater, comparing to pre- and occlusion phases, across all Tre levels (five levels: baseline, mild hyperthermia 1, mild hypothermia 1, mild hyperthermia 2, mild hypothermia 2). Also, SkBF throughout pre-occlusion, occlusion, and post-occlusion was greater during mild hyperthermia 2. Significance: We found a significant impact of core temperature on SkBF and cutaneous vascular reactivity which affects the diagnostic indicators obtained from the RHRT and can impact the final outcome
Creative Media Approaches for Cultural Mitigation
No full textTransportation projects do more than connect people, they provide opportunities to connect cultures. Explore how media production was incorporated as unique mitigation in two projects to address the cultural history of two different geographic areas. Participants will learn of the successes and challenges in producing the Cultural Audio Tours for the INDOT-sponsored I-69 project and the video documentary for the historically African American “Foot” Neighborhood as part of the Missouri DOT-sponsored Rex Whitton Expressway
Continuing Education at Purdue University, 1975–2019
Get PDFContinuing Education at Purdue University, 1975–2019 is intended to provide a follow-up to the monograph written by Dr. Frank K. Burrin after his retirement as director of Purdue Continuing Education in 1984, Continuing Education at Purdue University: The First Hundred Years (1874–1974). Burrin became ill shortly after his retirement, and he was not able to complete his project. His notes were later compiled, edited, and published by Elizabeth Boyd Thompson.
This monograph presents forty-five years of the history of Continuing Education and Conferences at Purdue under the leadership of eight deans and directors.https://docs.lib.purdue.edu/continuinged/1001/thumbnail.jp
First Opinion: Sicily in the Aquarium: A Father, Daughter, and the Inspiring Story of Jeanne Power
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Speed Management on Freeways in Transition Zones Between Rural and Urban Conditions
Get PDFDrivers’ noncompliance with the posted speed limit reductions on rural-to-urban freeway transition zones is a recurrent problem in Indiana and other states. Speed-reduction treatments, such as pavement markings and active signing, aim to solve this issue. Optical speed bars, longitudinal speed reduction markings, and speed feedback signs were identified as the most promising speed-reduction treatments for experimental implementation in Indiana. Probe-vehicle-based speed data for 1 year was acquired on selected freeway segments to measure the speed effect. A set of fixed-effects linear regression models were used to estimate the effect of speed-reduction treatments on three key speed behavior characteristics—average speed, 90th speed percentiles, and speed variability. Optical speed bars together with speed feedback signs are a promising combination of treatments. While this and other traditional speed-reduction treatments show promise, their influence area is limited to a portion of target road segments. Therefore, future speed management needs to consider other speed-reduction treatments, particularly automated and area-wide speed enforcement, to maintain reduced speeds inside urban areas
Experimental Assessment of the Effectiveness of Unmanned Aerial Systems in Search and Rescue Operations
No full textA search and rescue (SAR) operation requires a rapid, accurate, and effective response to provide the missing person the best chance of being rescued. Personnel from the local area are likely to be closest to the location of the missing person, be familiar with the area, but they may not be adequately trained, experienced, or equipped with the best tools to effectively locate, identify, and retrieve the missing person. Thus, most SAR operations rely on a mix of trained personnel and volunteers. Among the trained personnel, there is a wide variance in proficiency, experience, and access to technology, leading to some emergency response agencies being better prepared than others. Volunteers, on the other hand, could be very helpful, but are largely untrained and inexperienced, reducing their inherent likelihood of success. The primary challenge to successful SAR operations is the lack of consistently trained, adequately equipped, and diversely experienced personnel. Despite the lack of desired resources, SAR operations must be completed rapidly and emergency responders often turn to volunteers. In response to this challenge, the use of unmanned aerial systems, UAS, in small volunteer teams was proposed. Available, off-the-shelf UAS technology can be used to simplify training with the help of affordable advanced technology, and thereby enable rapid, accurate, and effective SAR operations. The following research was executed in the form of three independent, but related, studies. The first study focused on the efficiency of a UAS-equipped SAR operation; the second study focused on the accuracy of a UAS and image analysis software-enabled SAR operation; and the third study tested the ability of novice volunteers to learn and apply the new technologies (UAS plus image analysis) efficiently and effectively. The goal of these studies was to determine whether affordable commercial, off-the-shelf technologies could be used to enhance the efficiency and effectivity of SAR operations. The experimental methodology used specifically designed simulations of SAR operational scenarios. Two operational tactics were tested: (a) Equip the SAR team with UAS and (b) equip the SAR team with UAS and image analysis software. The specific scenarios selected were similar in complexity, but different enough to minimize the transfer of learning from the first study to the second study. Finally, the reference times for manual SAR operations were compared against UAS and computerized image analysis software-assisted methods. The results of the proposed studies determined whether off-the-shelf UAS and image analysis technologies could be used to enable rapid, accurate, and effective SAR operations