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https://www.readbyqxmd.com/read/29782503/impact-and-recovery-process-of-mini-flash-crashes-an-empirical-study
#1
Tobias Braun, Jonas A Fiegen, Daniel C Wagner, Sebastian M Krause, Thomas Guhr
In an Ultrafast Extreme Event (or Mini Flash Crash), the price of a traded stock increases or decreases strongly within milliseconds. We present a detailed study of Ultrafast Extreme Events in stock market data. In contrast to popular belief, our analysis suggests that most of the Ultrafast Extreme Events are not necessarily due to feedbacks in High Frequency Trading: In at least 60 percent of the observed Ultrafast Extreme Events, the largest fraction of the price change is due to a single market order. In times of financial crisis, large market orders are more likely which leads to a significant increase of Ultrafast Extreme Events occurrences...
2018: PloS One
https://www.readbyqxmd.com/read/29782209/practical-assessment-and-management-of-vulnerabilities-in-older-patients-receiving-chemotherapy-asco-guideline-for-geriatric-oncology
#2
Supriya G Mohile, William Dale, Mark R Somerfield, Mara A Schonberg, Cynthia M Boyd, Peggy S Burhenn, Beverly Canin, Harvey Jay Cohen, Holly M Holmes, Judith O Hopkins, Michelle C Janelsins, Alok A Khorana, Heidi D Klepin, Stuart M Lichtman, Karen M Mustian, William P Tew, Arti Hurria
Purpose To provide guidance regarding the practical assessment and management of vulnerabilities in older patients undergoing chemotherapy. Methods An Expert Panel was convened to develop clinical practice guideline recommendations based on a systematic review of the medical literature. Results A total of 68 studies met eligibility criteria and form the evidentiary basis for the recommendations. Recommendations In patients ≥ 65 years receiving chemotherapy, geriatric assessment (GA) should be used to identify vulnerabilities that are not routinely captured in oncology assessments...
May 21, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29778873/bioanalysis-of-ibrutinib-and-its-dihydrodiol-and-glutathione-cycle-metabolites-by-liquid-chromatography-tandem-mass-spectrometry
#3
J J M Rood, P J A Dormans, M J van Haren, J H M Schellens, J H Beijnen, R W Sparidans
Ibrutinib is a targeted covalent inhibitor frequently used for the treatment of various lymphomas. In addition to oxidative metabolism, it is metabolized through glutathione coupling. The quantitative insight into this kind of metabolism is scarce, and tools for quantitation are lacking. The non-oxidative metabolism could prove a more prominent role when oxidative metabolism is impaired. Also, in-vitro studies could over-estimate the effect of CYP450-inhibition. To gain quantitative insight into this relatively unknown biotransformation pathway of the drug we have developed a validated simple, fast and sensitive bio-analytical assay for ibrutinib, dihydrodiol-ibrutinib, and the glutathione, cysteinylglycine and cysteine conjugates of ibrutinib in human plasma...
May 11, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29777771/assessing-the-longer-term-effects-of-mild-traumatic-brain-injury-on-self-reported-driving-ability
#4
John Bernstein, Matthew Calamia
BACKGROUND: Mild traumatic brain injury (mTBI) may have long-term cognitive and functional consequences, and recent mTBI is associated with impaired performance on measures related to driving ability. However, it remains unclear whether prior mTBI history is associated with poorer driving performance. OBJECTIVE: To examine the longer-term effects of mTBI on self-reported driving ability. DESIGN: Retrospective, cross-sectional study. SETTING: Online...
May 16, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29776826/recognition-of-sympathetic-crashing-acute-pulmonary-edema-scape-and-use-of-high-dose-nitroglycerin-infusion
#5
Samantha Paone, Leigha Clarkson, Billy Sin, Sheena Punnapuzha
Sympathetic Crashing Acute Pulmonary Edema (SCAPE), or flash pulmonary edema, is the extreme end of the acute pulmonary edema spectrum. A sympathetic surge occurs as a result of decreased systemic perfusion resulting in further increases in afterload, causing the patient to decompensate. Patients can decompensate quickly, therefore patients require rapid interventions. The use of high-dose nitroglycerin (HDN) has been a topic of interest as it is believed to achieve preload and afterload reduction. However, its use continues to be controversial due to concerns of drug induced hypotension, syncope or paresthesia...
May 10, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29776783/epidemiology-of-pedestrian-motor-vehicle-fatalities-and-injuries-2006-2015
#6
Shu-Ling Chong, Li-Wei Chiang, John Carson Allen, Eric William Fleegler, Lois Kaye Lee
INTRODUCTION: Pedestrian road safety remains a public health priority. The objective of this study is to describe trends in fatalities and injuries after pedestrian-motor vehicle collisions in the U.S. and identify associated risk factors for pedestrian fatalities. METHODS: This is a cross-sectional study of U.S. pedestrian-motor vehicle collisions from 2006 to 2015 (performed in 2017). Pedestrian fatality and injury data were obtained from the National Highway Traffic Safety Administration's Fatality Analysis Reporting System and National Automotive Sampling System General Estimates System...
May 15, 2018: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29776530/does-a-tow-bar-increase-the-risk-of-neck-injury-in-rear-end-collisions
#7
Anne Vingaard Olesen, Rune Elvik, Camilla Sloth Andersen, Harry S Lahrmann
INTRODUCTION: Does a tow-bar increase the risk of neck injury in the struck car in a rear-end collision? The rear part of a modern car has collision zones that are rendered nonoperational when the car is equipped with a tow-bar. Past crash tests have shown that a car's acceleration was higher in a car equipped with a tow-bar and also that a dummy placed in a car with a tow-bar had higher peak acceleration in the lower neck area. METHOD: This study aimed to investigate the association between the risk of neck injury in drivers and passengers, and the presence of a registered tow-bar on the struck car in a rear-end collision...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29776528/the-effect-of-a-gearshift-interlock-on-seat-belt-use-by-drivers-who-do-not-always-use-a-belt-and-its-acceptance-among-those-who-do
#8
David G Kidd, Jeremiah Singer, Richard Huey, Laura Kerfoot
INTRODUCTION: Seat belts reduce the risk of fatal injury in a crash, yet in 2015, nearly 10,000 people killed in passenger vehicles were unrestrained. Enhanced seat belt reminders increase belt use, but a gearshift interlock that prevents the vehicle from being placed into gear unless the seat belt is used may prove more effective. METHOD: Thirty-two people with a recent seat belt citation and who admitted to not always using a seat belt as a driver were recruited as part-time belt users and asked to evaluate two new vehicles...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29776526/access-to-trauma-centers-for-road-crashes-in-the-united-states
#9
Wei Hu, Qiao Dong, Chunjiao Dong, Jun Yang, Baoshan Huang
INTRODUCTION: Existing research indicates that around 90% of all U.S. residents have access to at least one level I or II trauma center within 60min. However, a limitation of these estimates lies in that they are based on where people live and not where people are injured, which may overestimate the access to trauma centers for seriously injured patients in fatal crashes. METHOD: In this study, the Fatality Analysis Reporting System (FARS) data between 2013 and 2014 were collected and analyzed to quantify the access of injured patients to trauma centers for fatal crashes across states...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29776525/ability-to-monitor-driving-under-the-influence-of-marijuana-among-non-fatal-motor-vehicle-crashes-an-evaluation-of-the-colorado-electronic-accident-reporting-system
#10
Alexis B Peterson, Erin K Sauber-Schatz, Karin A Mack
INTRODUCTION: As more states legalize medical/recreational marijuana use, it is important to determine if state motor-vehicle surveillance systems can effectively monitor and track driving under the influence (DUI) of marijuana. This study assessed Colorado's Department of Revenue motor-vehicle crash data system, Electronic Accident Reporting System (EARS), to monitor non-fatal crashes involving driving under the influence (DUI) of marijuana. METHODS: Centers for Disease Control and Prevention guidelines on surveillance system evaluation were used to assess EARS' usefulness, flexibility, timeliness, simplicity, acceptability, and data quality...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29776524/analysis-of-hourly-crash-likelihood-using-unbalanced-panel-data-mixed-logit-model-and-real-time-driving-environmental-big-data
#11
Feng Chen, Suren Chen, Xiaoxiang Ma
INTRODUCTION: Driving environment, including road surface conditions and traffic states, often changes over time and influences crash probability considerably. It becomes stretched for traditional crash frequency models developed in large temporal scales to capture the time-varying characteristics of these factors, which may cause substantial loss of critical driving environmental information on crash prediction. METHOD: Crash prediction models with refined temporal data (hourly records) are developed to characterize the time-varying nature of these contributing factors...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29776522/causal-attribution-in-explanations-of-near-crash-events-behind-the-wheel-and-its-relationship-to-comparative-judgments
#12
Blazej Palat, Patricia Delhomme
INTRODUCTION: The development of skills essential for avoiding crashes depends, in particular, on how drivers explain the causes of dangerous driving behaviors that resulted in a near crash. Here, we analyze causes attributed to such behaviors by car drivers in a self-report study. We explore the relationships between the dimensions of causal attribution, attribution of responsibility for the near crash, and drivers' comparative judgments. METHOD: For approximately two months, drivers used logbooks to document the near crashes that occurred during their trips...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29776520/commercial-truck-crash-injury-severity-analysis-using-gradient-boosting-data-mining-model
#13
Zijian Zheng, Pan Lu, Brenda Lantz
INTRODUCTION: Truck crashes contribute to a large number of injuries and fatalities. This study seeks to identify the contributing factors affecting truck crash severity using 2010 to 2016 North Dakota and Colorado crash data provided by the Federal Motor Carrier Safety Administration. METHOD: To fulfill a gap of previous studies, broad considerations of company and driver characteristics, such as company size and driver's license class, along with vehicle types and crash characteristics are researched...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29776519/how-many-crashes-are-caused-by-driver-interaction-with-passengers-a-meta-analysis-approach
#14
Athanasios Theofilatos, Apostolos Ziakopoulos, Eleonora Papadimitriou, George Yannis
INTRODUCTION: Conversation and other interactions with passengers while driving induce a level of distraction to the person driving. METHOD: This paper conducts a qualitative literature review on the effect of passenger interaction on road safety and then extends it by using meta-analysis techniques. RESULTS: The literature review indicates that the distraction due to passengers is a very frequent risk factor, with detrimental effects to various driving behavior and safety measures (e...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29776517/fatally-injured-pedestrians-and-bicyclists-in-the-united-states-with-high-blood-alcohol-concentrations
#15
Angela H Eichelberger, Anne T McCartt, Jessica B Cicchino
INTRODUCTION: Little research has focused on the problem of alcohol impairment among pedestrians and bicyclists in the United States. The aim of the current study was to investigate the prevalence, trends, and characteristics of alcohol-impaired fatally injured pedestrians and bicyclists. METHOD: Data from the Fatality Analysis Reporting System (FARS) were analyzed for fatally injured passenger vehicle drivers, pedestrians, and bicyclists 16 and older during 1982-2014...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29770161/numerical-investigation-on-head-and-brain-injuries-caused-by-windshield-impact-on-riders-using-electric-self-balancing-scooters
#16
Shi Shang, Yanting Zheng, Ming Shen, Xianfeng Yang, Jun Xu
To investigate head-brain injuries caused by windshield impact on riders using electric self-balancing scooters (ESS). Numerical vehicle ESS crash scenarios are constructed by combining the finite element (FE) vehicle model and multibody scooter/rider models. Impact kinematic postures of the head-windshield contact under various impact conditions are captured. Then, the processes during head-windshield contact are reconstructed using validated FE head/laminated windshield models to assess the severity of brain injury caused by the head-windshield contact...
2018: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29766143/when-should-screening-of-pediatric-trauma-patients-for-adult-behaviors-start
#17
Adrian A Maung, Robert D Becher, Kevin M Schuster, Kimberly A Davis
Background: Care of patients with trauma is not only limited to the sustained physical injuries but also requires addressing social issues, such as substance abuse and interpersonal violence, which are responsible for trauma-related recidivism. This study investigates whether there are age-related variations in these problematic social behaviors to analyze whether there is an age cut-off at which point adolescents should be screened for adult social behaviors. Methods: Retrospective review of patients with trauma aged 12-21 admitted to an urban Level 1 adult and pediatric trauma center between February 2013 and April 2016...
2018: Trauma surgery & acute care open
https://www.readbyqxmd.com/read/29765463/the-effects-of-curtain-airbag-on-occupant-kinematics-and-injury-index-in-rollover-crash
#18
Hongyun Li, Chengyue Jiang, Dong Cui, Shuang Lu
Background: Occupant injuries in rollover crashes are associated with vehicle structural performance, as well as the restraint system design. For a better understanding of the occupant kinematics and injury index in certain rollover crash, it is essential to carry out dynamic vehicle rollover simulation with dummy included. Objective: This study focused on effects of curtain airbag (CAB) parameters on occupant kinematics and injury indexes in a rollover crash. Besides, optimized parameters of the CAB were proposed for the purpose of decreasing the occupant injuries in such rollover scenario...
2018: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29758516/crash-data-modeling-with-a-generalized-estimator
#19
Zhirui Ye, Yueru Xu, Dominique Lord
The investigation of relationships between traffic crashes and relevant factors is important in traffic safety management. Various methods have been developed for modeling crash data. In real world scenarios, crash data often display the characteristics of over-dispersion. However, on occasions, some crash datasets have exhibited under-dispersion, especially in cases where the data are conditioned upon the mean. The commonly used models (such as the Poisson and the NB regression models) have associated limitations to cope with various degrees of dispersion...
May 11, 2018: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29755584/development-and-validation-of-an-age-specific-lower-extremity-finite-element-model-for-simulating-pedestrian-accidents
#20
Jing Huang, Yongcheng Long, Yu Yan, Lin Hu
The objective of the present study is to develop an age-specific lower extremity finite element model for pedestrian accident simulation. Finite element (FE) models have been used as a versatile tool to simulate and understand the pedestrian injury mechanisms and assess injury risk during crashes. However, current computational models only represent certain ages in the population, the age spectrum of the pedestrian victims is very large, and the geometry of anatomical structures and material property of the lower extremities changes with age for adults, which could affect the injury tolerance, especially in at-risk populations such as the elderly...
2018: Applied Bionics and Biomechanics
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