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https://www.readbyqxmd.com/read/28640685/understanding-and-improving-arterial-roads-to-support-public-health-and-transportation-goals
#1
Carolyn McAndrews, Keshia M Pollack, David Berrigan, Andrew L Dannenberg, Ed J Christopher
Arterials are types of roads designed to carry high volumes of motorized traffic. They are an integral part of transportation systems worldwide and exposure to them is ubiquitous, especially in urban areas. Arterials provide access to diverse commercial and cultural resources, which can positively influence community health by supporting social cohesion as well as economic and cultural opportunities. They can negatively influence health via safety issues, noise, air pollution, and lack of economic development...
June 22, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28640184/a-carrier-estimation-method-based-on-mle-and-kf-for-weak-gnss-signals
#2
Hongyang Zhang, Luping Xu, Bo Yan, Hua Zhang, Liyan Luo
Maximum likelihood estimation (MLE) has been researched for some acquisition and tracking applications of global navigation satellite system (GNSS) receivers and shows high performance. However, all current methods are derived and operated based on the sampling data, which results in a large computation burden. This paper proposes a low-complexity MLE carrier tracking loop for weak GNSS signals which processes the coherent integration results instead of the sampling data. First, the cost function of the MLE of signal parameters such as signal amplitude, carrier phase, and Doppler frequency are used to derive a MLE discriminator function...
June 22, 2017: Sensors
https://www.readbyqxmd.com/read/28639035/mitigation-of-pedestrian-heat-stress-using-parasols-in-a-humid-subtropical-region
#3
Shinichi Watanabe, Jin Ishii
Concerns over heat illness have been an increasing social problem in humid subtropical regions. One measure for avoiding excessive heat stress in hot outdoor environments is the use of parasols or umbrellas. The advantage of parasols is that they are a mobile and inexpensive way to provide personal shade outdoors. The objectives of this study were to compare the wet-bulb globe temperature (WBGT) under parasols and at an unshaded point as a reference, and to quantify the reduction in WBGT from the use of parasols in a humid subtropical region...
June 21, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28632058/assessment-of-model-based-image-matching-for-future-reconstruction-of-unhelmeted-sport-head-impact-kinematics
#4
Gregory J Tierney, Hamed Joodaki, Tron Krosshaug, Jason L Forman, Jeff R Crandall, Ciaran K Simms
Player-to-player contact inherent in many unhelmeted sports means that head impacts are a frequent occurrence. Model-Based Image-Matching (MBIM) provides a technique for the assessment of three-dimensional linear and rotational motion patterns from multiple camera views of a head impact event, but the accuracy is unknown for this application. The goal of this study is to assess the accuracy of the MBIM method relative to reflective marker-based motion analysis data for estimating six degree of freedom head displacements and velocities in a staged pedestrian impact scenario at 40 km/h...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28628811/evaluating-pedestrian-behavior-at-crosswalks-validation-of-a-pedestrian-behavior-questionnaire-for-the-u-s-population
#5
Shuchisnigdha Deb, Lesley Strawderman, Janice DuBien, Brian Smith, Daniel W Carruth, Teena M Garrison
The aim of this study was to develop and validate a self-reporting Pedestrian Behavior Questionnaire (PBQ) for the U.S. population to measure frequency of risky behaviors among pedestrians. The PBQ includes 50 survey items that allow respondents to rate the frequency with which they engage in different types of road-using behaviors as pedestrians. The validation study was conducted on 425 participants (228 males and 197 females) between the ages of 18 and 71. Confirmatory factor analysis differentiated pedestrian behaviors into five factor categories: violations, errors, lapses, aggressive behaviors, and positive behaviors...
June 16, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28624072/violent-events-on-the-road-risk-perception-of-traffic-related-and-non-traffic-related-situations
#6
Lilian de Oliveira Vilela da Silva, Marilita Gnecco de Camargo Braga
This study aimed at identifying and comparing subjective risk perception regarding two different violent situations in urban roads: traffic accidents (i.e. crashes) and robberies. A robbery consists of subtracting something from someone, while seriously threatening the victim, or using violence. Robberies can be perpetrated either with or without the use of a weapon. This study was carried out in the city of Uberlândia, a medium size city in the state of Minas Gerais, south-east Brazil. A total of 383 people was interviewed at home in two boroughs of Uberlândia, using a questionnaire divided in five parts: a) personal information; b) description of crash involvement; c) description of robbery involvement; d) the chance of being involved in a crash and in a robbery within the next three years; e) willingness to pay for more safety in traffic or for more security against robberies; f) what causes more damage or harm to society, crashes or robberies...
June 14, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28623756/longitudinal-investigation-into-implicit-stigma-of-epilepsy-among-japanese-medical-students-before-and-after-mass-media-coverage-of-car-accidents-associated-with-people-with-epilepsy
#7
Chizuko Nagamori, Keiko Hara, Katsuya Ohta, Miho Akaza, Yuki Sumi
OBJECTIVE: Public attitudes and stigma toward epilepsy may limit patient motivation for treatment and participation in social activities. Stigma research requiring individuals to report personal beliefs is useful but is subject to social desirability bias. Self-reporting methods often do not capture implicit attitudes; therefore, in this study, implicit stigma was measured using the implicit association test (IAT), which is a word sorting task to minimize this bias. Recently, in Japan, several serious car accidents caused by people with epilepsy (PWE) resulted in pedestrian fatalities...
June 14, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28623749/evaluating-the-safety-in-numbers-effect-for-pedestrians-at-urban-intersections
#8
Brendan Murphy, David M Levinson, Andrew Owen
Assessment of collision risk between pedestrians and automobiles offers a powerful and informative tool in urban planning applications, and can be leveraged to inform proper placement of improvements and treatment projects to improve pedestrian safety. Such assessment can be performed using existing datasets of crashes, pedestrian counts, and automobile traffic flows to identify intersections or corridors characterized by elevated collision risks to pedestrians. The Safety In Numbers phenomenon, which refers to the observable effect that pedestrian safety is positively correlated with increased pedestrian traffic in a given area (i...
June 14, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28619408/children-crossing-streets-the-cognitive-task-of-pedestrians-across-nations
#9
David C Schwebel
BACKGROUND: About 100,000 children die worldwide in pedestrian crashes, more than 90% of whom live in low- and middle-income countries (LMICs). However, most existing research on children's ability to cross the street is conducted in high-income countries (HICs). OBJECTIVE: The present study discusses 4 ways pedestrian behavior in LMICs differs from that in HICs, influencing both children's ability to cross streets safely and adult efforts to train children in pedestrian safety...
March 2017: Annals of Global Health
https://www.readbyqxmd.com/read/28618588/multiscale-model-for-pedestrian-and-infection-dynamics-during-air-travel
#10
Sirish Namilae, Pierrot Derjany, Anuj Mubayi, Mathew Scotch, Ashok Srinivasan
In this paper we develop a multiscale model combining social-force-based pedestrian movement with a population level stochastic infection transmission dynamics framework. The model is then applied to study the infection transmission within airplanes and the transmission of the Ebola virus through casual contacts. Drastic limitations on air-travel during epidemics, such as during the 2014 Ebola outbreak in West Africa, carry considerable economic and human costs. We use the computational model to evaluate the effects of passenger movement within airplanes and air-travel policies on the geospatial spread of infectious diseases...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28615044/comparison-of-transportation-related-injury-mechanisms-and-outcome-of-young-road-users-and-adult-road-users-a-retrospective-analysis-on-24-373-patients-derived-from-the-traumaregister-dgu-%C3%A2
#11
Thomas Brockamp, Uli Schmucker, Rolf Lefering, Manuel Mutschler, Arne Driessen, Christian Probst, Bertil Bouillon, Paola Koenen
BACKGROUND: Most young people killed in road crashes are known as vulnerable road users. A combination of physical and developmental immaturity as well as inexperience increases the risk of road traffic accidents with a high injury severity rate. Understanding injury mechanism and pattern in a group of young road users may reduce morbidity and mortality. This study analyzes injury patterns and outcomes of young road users compared to adult road users. The comparison takes into account different transportation related injury mechanisms...
June 14, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28614377/spatial-distribution-of-child-pedestrian-injuries-along-census-tract-boundaries-implications-for-identifying-area-based-correlates
#12
Jacqueline W Curtis
Census tracts are often used to investigate area-based correlates of a variety of health outcomes. This approach has been shown to be valuable in understanding the ways that health is shaped by place and to design appropriate interventions that account for community-level processes. Following this line of inquiry, it is common in the study of pedestrian injuries to aggregate the point level locations of these injuries to the census tracts in which they occur. Such aggregation enables investigation of the relationships between a range of socioeconomic variables and areas of notably high or low incidence...
2017: PloS One
https://www.readbyqxmd.com/read/28605251/influence-of-pedestrians-age-and-gender-types-on-spatial-and-temporal-distribution-of-pedestrian-crashes
#13
Alireza Toran Pour, Sara Moridpour, Richard Tay, Abbas Rajabifard
OBJECTIVES: Every year, about 1.24 million people are killed in traffic crashes in the world and more than 22% of these deaths are pedestrians. Therefore, pedestrian safety has become one of the significant traffic safety issues in the world. In order to develop effective and targeted safety programs, the location and time-specific influences on vehicle-pedestrian crashes must be assessed. The main purpose of this research is to explore the influence of pedestrians' age and gender on the temporal and spatial distribution of vehicle-pedestrian crashes to identify the hotspots and hot-times...
June 12, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28599135/comparison-of-us-metropolitan-region-pedestrian-and-bicyclist-fatality-rates
#14
Robert J Schneider, Jason Vargo, Aida Sanatizadeh
Annual US pedestrian and bicyclist fatalities involving motor vehicles have each increased by 30% in just six years, reaching their highest levels in two decades. To provide information to reverse this trend, we quantified pedestrian and bicyclist fatality rates in 46 of the largest US metropolitan statistical areas (MSAs) during two five-year time periods: 1999-2003 and 2007-2011. We divided the annual average number of pedestrian and bicyclist fatalities during 1999-2003 from the Fatality Analysis Reporting System by the annual estimates of pedestrian and bicycle trips, kilometers traveled, and minutes traveled from the 2001 National Household Travel Survey (NHTS) and the annual average number of fatalities from 2007 to 2011 by similar estimates from the 2009 NHTS...
June 7, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28591142/collective-phenomena-in-crowds-where-pedestrian-dynamics-need-social-psychology
#15
Anna Sieben, Jette Schumann, Armin Seyfried
This article is on collective phenomena in pedestrian dynamics during the assembling and dispersal of gatherings. To date pedestrian dynamics have been primarily studied in the natural and engineering sciences. Pedestrians are analyzed and modeled as driven particles revealing self-organizing phenomena and complex transport characteristics. However, pedestrians in crowds also behave as living beings according to stimulus-response mechanisms or act as human subjects on the basis of social norms, social identities or strategies...
2017: PloS One
https://www.readbyqxmd.com/read/28588511/female-vs-male-ampelm%C3%A3-nnchen-gender-specific-reaction-times-to-male-and-female-traffic-light-figures
#16
Farid I Kandil, Bettina Olk, Claus C Hilgetag
Traffic signs are important visual guiding signals for the safe navigation through complex road traffic. Interestingly, there is little variation in the traffic signs for cars around the world. However, remarkable variation exists for pedestrian traffic signs. Following up from an earlier study, we investigated the visual efficacy of female vs. male German Ampelmännchen pedestrian traffic signs. In a Stroop-like test, 30 subjects were presented with female and male go and no-go traffic light figures that were shown either in the corresponding or opposing color...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28585117/driving-behaviour-profile-of-drivers-with-autism-spectrum-disorder-asd
#17
Derserri Y Chee, Hoe C Lee, Ann-Helen Patomella, Torbjörn Falkmer
The symptomatology of autism spectrum disorder (ASD) can make driving risky, but little is known about the on-road driving behaviour of individuals with ASD. This study assessed and compared the on-road driving performance of drivers with and without ASD, and explored how the symptomatology of ASD hinders or facilitates on-road driving performance. Sixteen drivers with ASD and 21 typically-developed drivers participated in the study. Drivers with ASD underperformed in vehicle manoeuvring, especially at left-turns, right-turns and pedestrian crossings...
June 5, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28577528/factors-associated-with-the-occurrence-of-injuries-requiring-hospital-transfer-among-older-and-working-age-pedestrians-in-kurume-japan
#18
Takashi Nagata, Takeru Abe, Ayako Takamori, Yoshinari Kimura, Akihito Hagihara
BACKGROUND: Pedestrian injuries among older people tend to occur near their residence. However, knowledge regarding whether distance travelled from home to the injury site or road environmental/socioeconomic factors affect injury severity remains limited. METHODS: A cross-sectional study was performed using injury registry data from the Kurume City Fire Department, Japan. Distance travelled from home was determined with geographic information system (GIS) software...
June 2, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28574358/beyond-group-multiple-person-tracking-via-minimal-topology-energy-variation
#19
Shan Gao, Qixiang Ye, Junliang Xing, Arjan Kuijper, Zhenjun Han, Jianbin Jiao, Xiangyang Ji
Tracking multiple persons is a challenging task when persons move in groups and occlude each other. Existing groupbased methods have extensively investigated how to make group division more accurate in a tracking-by-detection framework; however, few of them quantify the group dynamics from the perspective of targets' spatial topology or consider the group in a dynamic view. Inspired by the sociological properties of pedestrians, we propose a novel socio-topology model with a topology-energy function to factor the group dynamics of moving persons and groups...
May 26, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28570345/reduction-of-pediatric-pedestrian-hazardous-road-conditions-in-a-school-drop-off-zone-utilizing-video-review
#20
Ibrahim Abd El-Shafy, Jillian Savino, Nathan A M Christopherson, Jose M Prince
BACKGROUND: In 2012, 76,000 pedestrians were struck by motor vehicles. This resulted in 20% of all pediatric mortalities between the ages of 5-15. We hypothesize that children are exposed to increased risk as pedestrians to motor vehicle injury when arriving to school and that identification of these hazards would improve targeting of injury prevention efforts. METHODS: Within a county containing 355 public schools, we identified a primary school with 588 students located in an urban setting with concerns for a high risk traffic environment...
May 30, 2017: Journal of Trauma and Acute Care Surgery
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