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https://www.readbyqxmd.com/read/27918937/methods-to-rank-traffic-rule-violations-resulting-in-crashes-for-allocation-of-funds
#1
Praveena Penmetsa, Srinivas S Pulugurtha
Education, enforcement and engineering countermeasures are implemented to make road users comply with the traffic rules. Not all the traffic rule violations can be addressed nor countermeasures be implemented at all unsafe locations, at once, due to limited funds. Therefore, this study aims at ranking the traffic rule violations resulting in crashes based on individual ranks, such as 1) frequency (expressed as a function of the number of drivers violating a traffic rule and involved in crashes), 2) crash severity, 3) total crash cost, and, 4) cost severity index, to assist transportation system managers in prioritizing the allocation of funds and improving safety on roads...
December 2, 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27914307/a-multivariate-random-parameters-tobit-model-for-analyzing-highway-crash-rates-by-injury-severity
#2
Qiang Zeng, Huiying Wen, Helai Huang, Xin Pei, S C Wong
In this study, a multivariate random-parameters Tobit model is proposed for the analysis of crash rates by injury severity. In the model, both correlation across injury severity and unobserved heterogeneity across road-segment observations are accommodated. The proposed model is compared with a multivariate (fixed-parameters) Tobit model in the Bayesian context, by using a crash dataset collected from the Traffic Information System of Hong Kong. The dataset contains crash, road geometric and traffic information on 224 directional road segments for a five-year period (2002-2006)...
November 30, 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27910575/measurement-of-the-internal-magnetic-fluctuation-by-the-transport-of-runaways-on-j-text
#3
Z Y Chen, D W Huang, R H Tong, W Yan, Y N Wei, T K Ma, Z H Jiang, X Q Zhang, Z P Chen, Z J Yang, G Zhuang
The measurement of internal magnetic fluctuation is important for the study of transport in tokamak plasmas. The runaway electron transport induced by the sawtooth crash can be used to obtain the internal magnetic fluctuation. Inversed sawtooth-like activities on hard x-ray (HXR) fluxes following sawtooth activities were observed after the application of electrode biasing on J-TEXT tokamak. The runaway diffusion coefficient Dr is deduced to be about 30 m(2)/s according to the time delay of HXR flux peaks to the sawtooth crashes...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27907937/tranexamic-acid-for-trauma-resuscitation-in-the-united-states-of-america
#4
Mark Walsh, Scott Thomas, Ernest Moore, Hunter Moore, Andres Piscoya, Daniel Hake, Michael Son, Tim Pohlman, Julie Wegner, John Bryant, Alberto Grassetto, Patrick Davis, Nathan Nielsen, Anton Crepinsek, Jacob T Shreve, Francis Castellino
The utilization of tranexamic acid (TXA) for the management of bleeding trauma patients has been a subject of much debate on both sides of the Atlantic and in Australia. As a result of the large randomized controlled study called the Clinical Randomization of an Antifibrinolytic in Severe Hemorrhage (CRASH-2), there was an initial enthusiasm for the use of TXA to treat bleeding patients. However, the adoption of TXA in the United States was delayed by concerns of "knowledge and evidence gaps" of the CRASH-2 study and because of a lack of mechanistic rationale that would explain the survival benefit noted in the study...
December 1, 2016: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/27894501/tranexamic-acid-update-in-trauma
#5
REVIEW
Ricardo J Ramirez, Philip C Spinella, Grant V Bochicchio
Following results from the CRASH-2 trial, tranexamic acid (TXA) gained considerable interest for the treatment of hemorrhage in trauma patients. Although TXA is effective at reducing mortality in patients presenting within 3 hours of injury, optimal dosing, timing of administration, mechanism, and pharmacokinetics require further elucidation. The concept of fibrinolysis shutdown in hemorrhagic trauma patients has prompted discussion of real-time viscoelastic testing and its potential role for appropriate patient selection...
January 2017: Critical Care Clinics
https://www.readbyqxmd.com/read/27890031/a-national-assessment-of-the-health-and-safety-of-emergency-medical-services-professionals
#6
Melissa A Bentley, Roger Levine
OBJECTIVES: The objectives were to assess changes in (1) health and physical fitness, (2) the prevalence of selected health problems, (3) risk behaviors, (4) ambulance safety issues, and (5) the preparedness of Emergency Medical Services (EMS) professionals. In addition, the incidence of patient-initiated violence directed toward EMS personnel and associated factors were assessed. METHODS: Data were obtained from a sample of nationally certified EMS professionals via annual questionnaires between 1999 and 2008...
November 28, 2016: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/27889656/safety-effects-of-the-london-cycle-superhighways-on-cycle-collisions
#7
Haojie Li, Daniel J Graham, Pan Liu
This paper evaluates the effects of the London Cycle Superhighways (CS) on cycle collisions. A total of 45 CS segments and 375 control segments are observed for a period of 8 years in London. Variables such as road characteristics, crash history and socio-economic information are included in the data set. Traffic characteristics including traffic volume, cycle volume and traffic speed are obtained from Department for Transport. We first estimate the safety effects on the CS routes using Empirical Bayes methods...
November 24, 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27889110/psychological-distress-and-physical-disability-in-patients-sustaining-severe-injuries-in-road-traffic-crashes-results-from-a-one-year-cohort-study-from-three-european-countries
#8
Maria Papadakaki, Ottavia Eleonora Ferraro, Chiara Orsi, Dietmar Otte, Georgia Tzamalouka, Marco von-der-Geest, Timo Lajunen, Türker Özkan, Anna Morandi, Markos Sarris, George Pierrakos, Joannes Chliaoutakis
The current study aimed to follow-up a group of road crash survivors for one year and assesses the impact of injury on their psychological and physical condition. All crash survivors that were admitted to the intensive or sub-intensive care units of selected hospitals in Greece, Germany and Italy over one year period (2013-2014), were invited to participate in the study and were interviewed at three different time-points as follows: (a) at one month (baseline data), (b) at six months, and (c) at twelve months...
November 18, 2016: Injury
https://www.readbyqxmd.com/read/27882338/naturalistic-rapid-deceleration-data-drivers-aged-75-years-and-older
#9
Anna Chevalier, Aran John Chevalier, Elizabeth Clarke, Kristy Coxon, Julie Brown, Kris Rogers, Soufiane Boufous, Rebecca Ivers, Lisa Keay
The data presented in this article are related to the research manuscript "Predictors of older drivers' involvement in rapid deceleration events", which investigates potential predictors of older drivers' involvement in rapid deceleration events including measures of vision, cognitive function and driving confidence (A. Chevalier et al., 2016) [1]. In naturalistic driving studies such as this, when sample size is not large enough to allow crashes to be used to investigate driver safety, rapid deceleration events may be used as a surrogate safety measure...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27878804/assessment-of-cardiovascular-risk-in-patients-undergoing-total-joint-alloplasty-the-crash-joint-study
#10
Pawel Legosz, Marcin Kotkowski, Anna E Platek, Pawel Maldyk, Bartosz Krzowski, Anna Rys, Karolina Semczuk, Filip M Szymanski, Krzysztof J Filipiak
BACKGROUND: Risk assessment is of particular importance for patients undergoing surgical interventions. Orthopedic procedures, especially total joint alloplasty are major procedure associated with high perioperative risk, as well as one of the highest rates of complications. The aim of the present study was to establish the prevalence of classical and non-classical cardiovascular risk factors in patients undergoing total hip or knee alloplasty. METHODS: The CRASH-JOINT (Cardiovascular Risk Assessment ScHeme in JOINT alloplasty) was a prospective, epidemiological study performed in consecutive patients scheduled for total joint (hip or knee) replacement surgery...
November 23, 2016: Kardiologia Polska
https://www.readbyqxmd.com/read/27877069/risk-factors-and-mortality-associated-with-undertriage-at-a-level-i-safety-net-trauma-center-a-retrospective-study
#11
Chris Barsi, Peter Harris, Rich Menaik, Nicholas C Reis, Swapna Munnangi, Mikhail Elfond
PURPOSE: The primary objective of this study was to determine the risk factors associated with undertriage and the risk factors for mortality among the undertriaged patients at a level I safety-net trauma center. METHODS: A retrospective analysis was performed of all trauma patients who presented to a level I safety-net trauma center with an injury severity score >15 over a 2-year period (2013-2014). Univariate and multivariate regression analyses were used to determine the risk factors predictive of undertriage in major trauma patients (injury severity score >15) and of mortality in undertriaged patients...
2016: Open Access Emergency Medicine: OAEM
https://www.readbyqxmd.com/read/27871105/development-and-full-body-validation-of-a-5th-percentile-female-finite-element-model
#12
Matthew L Davis, Bharath Koya, Jeremy M Schap, F Scott Gayzik
To mitigate the societal impact of vehicle crash, researchers are using a variety of tools, including finite element models (FEMs). As part of the Global Human Body Models Consortium (GHBMC) project, comprehensive medical image and anthropometrical data of the 5th percentile female (F05) were acquired for the explicit purpose of FEM development. The F05-O (occupant) FEM model consists of 981 parts, 2.6 million elements, 1.4 million nodes, and has a mass of 51.1 kg. The model was compared to experimental data in 10 validation cases ranging from localized rigid hub impacts to full body sled cases...
November 2016: Stapp Car Crash Journal
https://www.readbyqxmd.com/read/27871104/development-evaluation-and-sensitivity-analysis-of-parametric-finite-element-whole-body-human-models-in-side-impacts
#13
Eunjoo Hwang, Jingwen Hu, Cong Chen, Katelyn F Klein, Carl S Miller, Matthew P Reed, Jonathan D Rupp, Jason J Hallman
Occupant stature and body shape may have significant effects on injury risks in motor vehicle crashes, but the current finite element (FE) human body models (HBMs) only represent occupants with a few sizes and shapes. Our recent studies have demonstrated that, by using a mesh morphing method, parametric FE HBMs can be rapidly developed for representing a diverse population. However, the biofidelity of those models across a wide range of human attributes has not been established. Therefore, the objectives of this study are 1) to evaluate the accuracy of HBMs considering subject-specific geometry information, and 2) to apply the parametric HBMs in a sensitivity analysis for identifying the specific parameters affecting body responses in side impact conditions...
November 2016: Stapp Car Crash Journal
https://www.readbyqxmd.com/read/27871102/new-risk-curves-for-nhtsa-s-brain-injury-criterion-bric-derivations-and-assessments
#14
Tony R Laituri, Scott Henry, Kevin Pline, Guosong Li, Michael Frankstein, Para Weerappuli
The National Highway Traffic Safety Administration (NHTSA) recently published a Request for Comments regarding a potential upgrade to the US New Car Assessment Program (US NCAP) - a star-rating program pertaining to vehicle crashworthiness. Therein, NHTSA (a) cited two metrics for assessing head risk: Head Injury Criterion (HIC15) and Brain Injury Criterion (BrIC), and (b) proposed to conduct risk assessment via its risk curves for those metrics, but did not prescribe a specific method for applying them. Recent studies, however, have indicated that the NHTSA risk curves for BrIC significantly overstate field-based head injury rates...
November 2016: Stapp Car Crash Journal
https://www.readbyqxmd.com/read/27862597/impact-of-an-opioid-risk-reduction-initiative-on-motor-vehicle-crash-risk-among-chronic-opioid-therapy-patients
#15
Ryan N Hansen, Rod L Walker, Susan M Shortreed, Sascha Dublin, Kathleen Saunders, Evette J Ludman, Michael Von Korff
PURPOSE: Although prescription opioids have been associated with higher motor vehicle crash (MVC) risk, it is unknown whether health system initiatives to better manage chronic opioid therapy (COT) can reduce MVC risk at the population level. METHODS: We conducted an interrupted time series population-level cohort study at Group Health (GH), between January 2006 and September 2014, comparing MVC risk among COT patients who were GH members receiving care in either group practice or contracted care settings...
November 14, 2016: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/27854530/the-impact-of-michigan-s-partial-repeal-of-the-universal-motorcycle-helmet-law-on-helmet-use-fatalities-and-head-injuries
#16
Patrick M Carter, Lisa Buckley, Carol A C Flannagan, Jessica B Cicchino, Mark Hemmila, Patrick J Bowman, Farideh Almani, C Raymond Bingham
OBJECTIVES: To evaluate the impact of the partial repeal of Michigan's universal motorcycle helmet law on helmet use, fatalities, and head injuries. METHODS: We compared helmet use rates and motorcycle crash fatality risk for the 12 months before and after the April 13, 2012, repeal with a statewide police-reported crash data set. We linked police-reported crashes to injured riders in a statewide trauma registry. We compared head injury before and after the repeal...
November 17, 2016: American Journal of Public Health
https://www.readbyqxmd.com/read/27853417/a-mouse-model-for-binge-level-methamphetamine-use
#17
Shkelzen Shabani, Sydney K Houlton, Laura Hellmuth, Erika Mojica, John R K Mootz, Zhen Zhu, Cheryl Reed, Tamara J Phillips
Binge/crash cycles of methamphetamine (MA) use are frequently reported by individuals suffering from MA use disorders. A MA binge is self-reported as multiple daily doses that commonly accumulate to 800 mg/day (~10 mg/kg/day for a 170 pound human). A genetic animal model with a similar vulnerability to binge-level MA intake is missing. We used selectively bred MA high drinking (MAHDR) and low drinking (MALDR) mouse lines to determine whether several procedural variations would result in binge-level MA intake...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27825043/pedestrian-self-reported-use-of-smart-phones-positive-attitudes-and-high-exposure-influence-intentions-to-cross-the-road-while-distracted
#18
Alexia Lennon, Oscar Oviedo-Trespalacios, Sarah Matthews
Pedestrian crashes are an important issue globally as pedestrians are a highly vulnerable road user group, accounting for approximately 35% of road deaths worldwide each year. In highly motorised countries, pedestrian distraction by hand held technological devices appears to be an increasing factor in such crashes. An online survey (N=363) was conducted to 1) obtain prevalence information regarding the extent to which people cross the road while simultaneously using mobile phones for potentially distracting activities; 2) identify whether younger adult pedestrians are more exposed to/at risk of injury due to this cause than older adults; and 3) explore whether the Theory of Planned Behaviour (TPB) might provide insight into the factors influencing the target behaviours...
November 5, 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27824504/repeatability-study-of-replicate-crash-tests-a-signal-analysis-approach
#19
Jeremy Seppi, Jacek Toczyski, Jeff R Crandall, Jason Kerrigan
OBJECTIVE: To provide an objective basis on which to evaluate the repeatability of vehicle crash test methods, a recently developed signal analysis method was used to evaluate correlation of sensor time history data between replicate vehicle crash tests. The goal of this study was to evaluate the repeatability of rollover crash tests performed with the Dynamic Rollover Test System (DRoTS) relative to other vehicle crash test methods. METHODS: Test data from DRoTS tests, Deceleration Rollover Sled (DRS) tests, frontal crash tests, frontal offset crash tests, small overlap crash tests, Small Overlap Impact (SOI) crash tests, and oblique crash tests were obtained from the literature and publicly available databases (the National Highway Traffic Safety Administration vehicle database and the Insurance Institute for Highway Safety TechData) to examine crash test repeatability...
November 8, 2016: Traffic Injury Prevention
https://www.readbyqxmd.com/read/27819462/children-coordinate-in-a-recurrent-social-dilemma-by-taking-turns-and-along-dominance-asymmetries
#20
Sebastian Grueneisen, Michael Tomasello
Humans constantly have to coordinate their decisions with others even when their interests are conflicting (e.g., when 2 drivers have to decide who yields at an intersection). So far, however, little is known about the development of these abilities. Here, we present dyads of 5-year-olds (N = 40) with a repeated chicken game using a novel methodology: Two children each steered an automated toy train carrying a reward. The trains simultaneously moved toward each other so that in order to avoid a crash-which left both children empty-handed-1 train had to swerve...
November 7, 2016: Developmental Psychology
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