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https://www.readbyqxmd.com/read/28821009/evaluating-the-impact-of-connectivity-continuity-and-topography-of-sidewalk-network-on-pedestrian-safety
#1
Ahmed Osama, Tarek Sayed
With the increasing demand for sustainability, walking is being encouraged as one of the main active modes of transportation. However, pedestrians are vulnerable to severe injuries when involved in crashes which can discourage road users from walking. Therefore, studying factors that affect the safety of pedestrians is important. This paper investigates the relationship between pedestrian-motorist crashes and various sidewalk network indicators in the city of Vancouver. The goal is to assess the impact of network connectivity, directness, and topography on pedestrian safety using macro-level collision prediction models...
August 15, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28816665/body-structure-aware-deep-crowd-counting
#2
Siyu Huang, Xi Li, Zhongfei Zhang, Fei Wu, Shenghua Gao, Rongrong Ji, Junwei Han
Crowd counting is a challenging task, mainly due to the severe occlusions among dense crowds. This work aims to take a broader view to address crowd counting from the perspective of semantic modelling. In essence, crowd counting is a task of pedestrian semantic analysis involving three key factors: pedestrians, heads, and their context structure. The information of different body parts is an important cue to help us judge whether there exists a person at a certain position. Existing methods usually perform crowd counting from the perspective of directly modelling the visual properties of either the whole body or the heads only, without explicitly capturing the composite body-part semantic structure information that is crucial for crowd counting...
August 14, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28814569/the-impact-of-urban-speed-reduction-programmes-on-health-system-cost-and-utilities
#3
Babak Mohit, Zohn Rosen, Peter A Muennig
BACKGROUND: Vehicle speed changes impact the probability of injuring a pedestrian in ways that differ from the way that it impacts the probability of a collision or of death. Therefore, return on investment in speed reduction programmes has complex and unpredictable manifests. The objective of this study is to analyse the impact of motor vehicle speed reduction on the collision-related morbidity and mortality rates of urban pedestrians. METHODS AND FINDINGS: We created a simple way to estimate the public health impacts of traffic speed changes using a Markov model...
August 16, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28809675/jointly-learning-deep-features-deformable-parts-occlusion-and-classification-for-pedestrian-detection
#4
Wanli Ouyang, Hui Zhou, Hongsheng Li, Quanquan Li, Junjie Yan, Xiaogang Wang
Feature extraction, deformation handling, occlusion handling, and classification are four important components in pedestrian detection. Existing methods learn or design these components either individually or sequentially. The interaction among these components is not yet well explored. This paper proposes that they should be jointly learned in order to maximize their strengths through cooperation. We formulate these four components into a joint deep learning framework and propose a new deep network architecture (Code available on www...
August 11, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28806940/evaluation-of-the-implementation-of-an-intervention-to-improve-the-street-environment-and-promote-walking-for-transport-in-deprived-neighbourhoods
#5
Emma J Adams, Nick Cavill, Lauren B Sherar
BACKGROUND: Levels of physical activity remain low, particularly in deprived areas. Improving the street environment to promote walking for transport using a community engagement approach is a potential strategy to increase physical activity. An understanding of the implementation of this intervention approach is needed to facilitate further research, replication and scale-up. The aim of this study was to evaluate the implementation of the Fitter for Walking (FFW) intervention in deprived neighbourhoods...
August 14, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28802457/reducing-the-impact-of-speed-dispersion-on-subway-corridor-flow
#6
Jing Qiao, Lishan Sun, Xiaoming Liu, Jian Rong
The rapid increase in the volume of subway passengers in Beijing has necessitated higher requirements for the safety and efficiency of subway corridors. Speed dispersion is an important factor that affects safety and efficiency. This paper aims to analyze the management control methods for reducing pedestrian speed dispersion in subways. The characteristics of the speed dispersion of pedestrian flow were analyzed according to field videos. The control measurements which were conducted by placing traffic signs, yellow marking, and guardrail were proposed to alleviate speed dispersion...
November 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28796190/efficient-pedestrian-detection-at-nighttime-using-a-thermal-camera
#7
Jeonghyun Baek, Sungjun Hong, Jisu Kim, Euntai Kim
Most of the commercial nighttime pedestrian detection (PD) methods reported previously utilized the histogram of oriented gradient (HOG) or the local binary pattern (LBP) as the feature and the support vector machine (SVM) as the classifier using thermal camera images. In this paper, we propose a new feature called the thermal-position-intensity-histogram of oriented gradient (TPIHOG or T π HOG) and developed a new combination of the T π HOG and the additive kernel SVM (AKSVM) for efficient nighttime pedestrian detection...
August 10, 2017: Sensors
https://www.readbyqxmd.com/read/28793043/unintentional-pediatric-injuries-in-s%C3%A3-o-paulo-how-often-is-it-severe
#8
Simone de Campos Vieira Abib, Alessandra Mara Françóia, Renata Waksman, Maria Inês Dolci, Hélio Penna Guimarães, Frederico Moreira, Marcus Vinícius BoarettoCezillo, Adenauer Marinho Góes
Purpose: To evaluate severity and built a pilot of a national databank about pediatric trauma and to determine its severity. Methods: Prospective study of unintentional pediatric trauma in five hospitals in the city of São Paulo, Brazil. Results: 916 patients in 4 months. 61.5% of traumatized children were male, average 6.5 years. 48. 4% were falls. Most families had an average monthly income less than three minimum wages. 42% of accidents occurred at home...
July 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28789923/geographical-accessibility-to-community-pharmacies-by-the-elderly-in-metropolitan-lisbon
#9
Miguel Padeiro
BACKGROUND: In ageing societies, community pharmacies play an important role in delivering medicines, responsible advising, and other targeted services. Elderly people are among their main consumers, as they use more prescription drugs, need more specific health care, and experience more mobility issues than other age groups. This makes geographical accessibility a relevant concern for them. OBJECTIVES: To measure geographical pedestrian accessibility to community pharmacies by elderly people in the Lisbon Metropolitan Area (LMA)...
August 2, 2017: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/28783080/thermal-infrared-pedestrian-image-segmentation-using-level-set-method
#10
Yulong Qiao, Ziwei Wei, Yan Zhao
The edge-based active contour model has been one of the most influential models in image segmentation, in which the level set method is usually used to minimize the active contour energy function and then find the desired contour. However, for infrared thermal pedestrian images, the traditional level set-based method that utilizes the gradient information as edge indicator function fails to provide the satisfactory boundary of the target. That is due to the poorly defined boundaries and the intensity inhomogeneity...
August 6, 2017: Sensors
https://www.readbyqxmd.com/read/28780491/health-impact-modelling-of-different-travel-patterns-on-physical-activity-air-pollution-and-road-injuries-for-s%C3%A3-o-paulo-brazil
#11
Thiago Hérick de Sá, Marko Tainio, Anna Goodman, Phil Edwards, Andy Haines, Nelson Gouveia, Carlos Monteiro, James Woodcock
BACKGROUND: São Paulo city, Brazil, faces challenges caused by rapid urbanization. We illustrate how future travel patterns could lead to different health consequences in the city. METHODS: We evaluated the health impacts of different travel pattern scenarios for the São Paulo adult population by comparing the travel patterns of São Paulo in 2012 with counterfactual scenarios in which the city adopted travel patterns of i) those living in the city's expanded centre; ii) London (2012); iii) a highly motorized São Paulo (SP California); and iv) a visionary São Paulo (SP 2040), with high levels of walking and cycling and low levels of car and motorcycle use...
August 3, 2017: Environment International
https://www.readbyqxmd.com/read/28777317/type-and-context-of-alcohol-related-injury-among-patients-presenting-to-emergency-departments-in-a-caribbean-country
#12
Sandra D Reid, Jannel Gentius
There is an association between alcohol consumption and injuries in Latin America and the Caribbean. This cross-sectional study explores the socio-contextual factors of alcohol-related injuries in Trinidad and Tobago. Data on drinking patterns, injury type, drinking context prior to injury, and demographics were collected from patients presenting with injuries to the Emergency Departments (ED) of four hospitals. Findings show that 20.6% of patients had consumed alcohol, mainly beer, in the 6 h before injury...
August 4, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28776131/pure-distraction-injury-of-t1-2-with-quad-fever
#13
Jun-Yeong Seo, Chae-Moon Lim, Young-Hoon Kim, Kee-Yong Ha
INTRODUCTION: We report a pure distraction injury of the upper thoracic spine and uncontrolled hyperthermia without an infectious cause. Quad fever appears in the first several weeks to months after a cervical or upper thoracic SCI and is characterized by an extreme elevation in body core temperature beyond 40 °C without an infectious cause. Discriminating between infectious and noninfectious causes is important, and a thorough clinical assessment is required. MATERIALS AND METHODS: A 52-year-old male visited the emergency room complaining of back pain with complete paralysis [American Spinal Injury Association (ASIA) A] of both lower extremities after a pedestrian-motor vehicle accident...
August 3, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28764763/the-shrinking-health-advantage-unintentional-injuries-among-children-and-youth-from-immigrant-families
#14
Natasha Ruth Saunders, Alison Macpherson, Jun Guan, Lisa Sheng, Astrid Guttmann
BACKGROUND: Immigrants typically arrive in good health. This health benefit can decline as immigrants adopt behaviours similar to native-born populations. Risk of injury is low in immigrants but it is not known whether this changes with increasing time since migration. We sought to examine the association between duration of residence in Canada and risk of unintentional injury. METHODS: Population-based cross-sectional study of children and youth 0 to 24 years in Ontario, Canada (2011-2012), using linked health and administrative databases...
August 1, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28759587/older-adults-must-hurry-at-pedestrian-lights-a-cross-sectional-analysis-of-preferred-and-fast-walking-speed-under-single-and-dual-task-conditions
#15
Patrick Eggenberger, Sara Tomovic, Thomas Münzer, Eling D de Bruin
Slow walking speed is strongly associated with adverse health outcomes, including cognitive impairment, in the older population. Moreover, adequate walking speed is crucial to maintain older pedestrians' mobility and safety in urban areas. This study aimed to identify the proportion of Swiss older adults that didn't reach 1.2 m/s, which reflects the requirements to cross streets within the green-yellow phase of pedestrian lights, when walking fast under cognitive challenge. A convenience sample, including 120 older women (65%) and men, was recruited from the community (88%) and from senior residences and divided into groups of 70-79 years (n = 59, 74...
2017: PloS One
https://www.readbyqxmd.com/read/28758801/using-medico-legal-data-to-investigate-fatal-older-road-user-crash-circumstances-and-risk-factors
#16
Sjaan Koppel, Lyndal Bugeja, Daisy Smith, Ashne Lamb, Jeremy Dwyer, Michael Fitzharris, Stuart Newstead, Angelo D'Elia, Judith Charlton
OBJECTIVE: This study used medico-legal data to investigate fatal older road user (ORU, aged 65 years and older) crash circumstances and risk factors relating to four key components of the Safe System approach (e.g., roads and roadsides, vehicles, road users and speeds) to identify areas of priority for targeted prevention activity. METHOD: The Coroners' Court of Victoria (CCOV)'s Surveillance Database was searched to identify and describe the frequency and rate per 100,000 population of fatal ORU crashes in the Australian state of Victoria for 2013-2014...
July 31, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28757907/mind-your-crossings-mining-gis-imagery-for-crosswalk-localization
#17
Dragan Ahmetovic, Roberto Manduchi, James M Coughlan, Sergio Mascetti
For blind travelers, finding crosswalks and remaining within their borders while traversing them is a crucial part of any trip involving street crossings. While standard Orientation & Mobility (O&M) techniques allow blind travelers to safely negotiate street crossings, additional information about crosswalks and other important features at intersections would be helpful in many situations, resulting in greater safety and/or comfort during independent travel. For instance, in planning a trip a blind pedestrian may wish to be informed of the presence of all marked crossings near a desired route...
April 2017: ACM Transactions on Accessible Computing
https://www.readbyqxmd.com/read/28753685/effects-of-lumbar-spine-assemblies-and-body-borne-equipment-mass-on-anthropomorphic-test-device-responses-during-drop-tests
#18
Daniel Aggromito, Mark Jaffrey, Allen Chhor, Bernard Chen, Wenyi Yan
When simulating or conducting land mine blast tests on armored vehicles to assess potential occupant injury, the preference is to use the Hybrid III anthropomorphic test device (ATD). In land blast events, neither the effect of body-borne equipment (BBE) on the ATD response nor the dynamic response index (DRI) is well understood. An experimental study was carried out using a drop tower test rig, with a rigid seat mounted on a carriage table undergoing average accelerations of 161 g and 232 g over 3 ms. A key aspect of the work looked at the various lumbar spine assemblies available for a Hybrid III ATD...
October 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28753415/macro-level-vulnerable-road-users-crash-analysis-a-bayesian-joint-modeling-approach-of-frequency-and-proportion
#19
Qing Cai, Mohamed Abdel-Aty, Jaeyoung Lee
This study aims at contributing to the literature on pedestrian and bicyclist safety by building on the conventional count regression models to explore exogenous factors affecting pedestrian and bicyclist crashes at the macroscopic level. In the traditional count models, effects of exogenous factors on non-motorist crashes were investigated directly. However, the vulnerable road users' crashes are collisions between vehicles and non-motorists. Thus, the exogenous factors can affect the non-motorist crashes through the non-motorists and vehicle drivers...
July 25, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28752024/local-environment-and-social-factors-in-primary-school-children-s-afterschool-commute-in-china
#20
John Zacharias, Bai Zhen, Xili Han, Yunshi Huang
The rapid decline in young children's active commutes to and from school has prompted investigations into ways to raise activity levels. The period after school is recognized as very important in the daily activity regime of primary school children. In this study, we examine the relative effects of local environmental factors and socio-economic status on children's after-school commute mode choice. Environmental factors are pedestrian priority streets, street intersection density, motorways, shops, and play spaces...
September 2017: Preventive Medicine Reports
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