Development of Performance Requirements for a Rail Passenger Workstation Table Safety Standard

2010 ◽  
Author(s):  
Michelle Muhlanger ◽  
Daniel Parent ◽  
Kristine Severson ◽  
Benjamin Perlman
Keyword(s):  
United States ◽  
Public Transportation ◽  
Injury Risk ◽  
Dynamic Models ◽  
The United States ◽  
Transportation Systems ◽  
Initial Stiffness ◽  
Safety Standard ◽  
Sled Test ◽  
Draft Standard

The American Public Transportation Association’s (APTA) Construction and Structural committee, a railroad industry group, with the support of the Federal Railroad Administration (FRA) and the John A. Volpe National Transportation Systems Center (Volpe Center), is creating an industry safety standard for an energy absorbing table. Workstation tables in passenger trains are an increasingly popular seating configuration both in the United States and abroad. Although a well-attached table can provide convenience and compartmentalization for the occupant, there is a risk of abdominal injury during a rail accident. In Fact, there have been several accidents in the United States in which impacts with workstation tables have severely or fatally injured occupants. In 2006, in response to these injuries, an FRA sponsored program developed a prototype table that distributed load over a wider area of the abdomen and absorbed energy during a collision. This table design was tested with specialized anthropomorphic test devices (ATDs) instrumented to measure abdominal impact response and was shown to decrease injury risk compared to a baseline table design. Building on the knowledge gained in the development of the prototype table, the proposed standard requires force to the abdomen be limited while energy is absorbed by the table. Since manufacturers do not have access specialized ATDs, researchers proposed a two part testing requirement. The first part is a quasi-static test which measures the energy absorption capacity of the table with a maximum force level determined from testing with specialized abdominal ATDs. The second part is a sled test with a standard Hybrid III 50th percentile (HIII) ATD to assess compliance with occupant protection standards of compartmentalization and ATD injury assessment reference values (IARVs). This paper discusses the research performed to develop the performance requirement in the draft standard. Current injury measures, originally developed for the automotive industry, were examined to assess their applicability to workstation table impacts. Multiple Mathematical Dynamic Models (MADYMO) model simulations show the estimated injuries during a simulated sled test scenario. Several force-crush parameters were examined, including the initial stiffness of the force-crush curve, the plateau force and the target energy absorbed by the table, to determined the force-crush design characteristics of a table that are likely to reduce injury risk. The results of this study, combined with testing of the current prototype table described in a companion paper [1], led to a draft standard that will greatly improve the safety of workstation tables in passenger rail cars.

America's Scientific Treasures

2020 ◽  
Author(s):  
Stephen M. Cohen ◽  
Brenda H. Cohen
Keyword(s):  
United States ◽  
National Parks ◽  
Public Transportation ◽  
The United States ◽  
Scientific Interest ◽  
Essential Information ◽  
Travel Guide ◽  
Points Of Interest ◽  
Technological Interest

America’s Scientific Treasures is a comprehensive travel guide, designed for adults, that takes the reader to well-known and lesser-known sites of scientific and technological interest in the United States. The book is divided into nine geographical chapters. Subdivided by states, each chapter is represented by its scientific and technological treasures, including museums, arboretums, zoos, national parks, planetariums, natural or technological points of interest, and the homes of famous scientists. While the book is aimed at adults, many of the sites may also be of interest to teens and younger children. The traveler is provided with essential information, including addresses, telephone numbers, hours of entry, handicapped access, dining facilities, dates open and closed, available public transportation, and websites. Nearly every site included here has been visited by the authors. Although written with scientists in mind, this book is for anyone who likes to travel and visit places of historical and scientific interest. Included are photographs of many sites within each state.

scholarly journals Genetic Testing by Sports Medicine Physicians in the United States: Attitudes, Experiences, and Knowledge

Sports ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 145
Author(s):  
Eleanor Taranto ◽  
Michael Fishman ◽  
Holly Benjamin ◽  
Lainie Ross
Keyword(s):  
United States ◽  
Genetic Testing ◽  
Sports Medicine ◽  
Injury Risk ◽  
Expert Knowledge ◽  
Disease Risk ◽  
Sickle Cell Trait ◽  
Positive Family History ◽  
The United States ◽  
Medical Society

It remains unknown whether and how sports medicine physicians currently utilize genetic testing in their clinical practice. This study sought to assess knowledge of, experience with, and attitudes towards genetic testing by sports medicine physicians in the United States (US). An email with a survey hyperlink was distributed twice to members of the American Medical Society for Sports Medicine (AMSSM) listserv in September 2016, with approximately a 10% response rate. Questions focused on knowledge of, experience with, and attitudes towards testing for different genes related to sports proficiency, injury risk, and disease risk. Few AMSSM physicians believe that genetic testing to adapt training (12%) or to choose a sport (2%) is ready for clinical adoption. Most respondents self-reported minimal knowledge about, and limited experience with, genetic testing. The main exception was screening for sickle cell trait (SCT) for which most (84%) reported moderate/significant/expert knowledge and over two-thirds had ordered testing. Although most respondents thought it appropriate to counsel and test for health conditions associated with cardiac and connective tissue disorders in the setting of a positive family history, only a minority had been asked to do so. Five or fewer respondents (2%) had been asked to test for performance-associated variants (Angiotensin Converting Enzyme (ACE) II and Alpha-Actinin 3 (ACTN3)), and five or fewer (2%) would recommend changes based on the results. Our study provides a baseline of current US sports medicine physicians’ minimal experiences with, and knowledge of, genetic testing. The findings of our study indicate that sports medicine physicians require further genetics education as it relates to sports and exercise in order to be prepared to competently engage with their patients and to develop sound professional organizational policies.

scholarly journals High Costs of Dialysis Transportation in the United States: Exploring Approaches to a More Cost-effective Delivery System

10.36469/9861 ◽  
2013 ◽  
Vol 1 (2) ◽  
pp. 134-150 ◽  
Author(s):  
J. Mark Stephens ◽  
Samuel Brotherton ◽  
Stephan C. Dunning ◽  
Larry C. Emerson ◽  
David T. Gilbertson ◽  
...  
Keyword(s):  
United States ◽  
Public Transportation ◽  
Cost Savings ◽  
Cost Effective ◽  
The United States ◽  
Levels Of Care ◽  
Dialysis Facility ◽  
Effective Delivery ◽  
Stage Renal Disease ◽  
End Stage

Background: The costs of transporting end-stage renal disease (ESRD) patients to dialysis centers are high and growing rapidly. Research has suggested that substantial cost savings could be achieved if medically appropriate transport was made available and covered by Medicare. Objectives: To estimate US dialysis transportation costs from a purchaser’s perspective, and to estimate cost savings that could be achieved if less expensive means of transport were utilized. Methods: Costs were estimated using an actuarial model. Travel distance estimates were calculated using GIS software from patient ZIP codes and dialysis facility addresses. Cost and utilization estimates were derived from fee schedules, government reports, transportation websites and peer-reviewed literature. Results: The estimated annual cost of dialysis transportation in the United States is $3.0 billion, half of which is for ambulances. Most other costs are due to transport via ambulettes, wheelchair vans and taxis. Approximately 5% of costs incurred are for private vehicle or public transportation use. If ambulance use dropped to 1% of trips from the current 5%, costs could be reduced by one-third. Conclusions: Decision-makers should consider policies to reduce ambulance use, while providing appropriate levels of care.

scholarly journals THE DEVELOPMENT OF THE USA LEGISLATION ON THE FIGHT AGAINST TERRORISM AFTER 11 SEPTEMBER 2001

2017 ◽  
Vol 3 (3) ◽  
pp. 86-92 ◽  
Author(s):  
Андрей Ефремов ◽  
Andrey Efremov
Keyword(s):  
United States ◽  
Public Transportation ◽  
The United States ◽  
The State ◽  
Maritime Transportation ◽  
International Terrorism ◽  
Patriot Act ◽  
Transportation Security ◽  
Mandatory Requirement ◽  
The Usa

The article is devoted to development of the USA legislation on the fight against terrorism. The author considered the objectives and tasks of the state in a particular historical period; analyzed the laws passed by the USA Congress aimed at combating home and international terrorism; identifies the main directions of the state policy of the USA in the field of counter-terrorism. The article covers the events after 11 September 2001 to the present. The author gives a brief overview of the events of 11 September 2001, discusses the Patriot Act and other laws, aimed at combating terrorism. The Patriot Act allows the Federal Bureau of Investigation to intercept telephone, verbally and electronic communications relating to terrorism, computer and mail fraud; introduces special measures to combat money-laundering; expands immigration rules, in particular, mandatory requirement of detention of persons suspected of terrorism appeared; reveals the procedure of multilateral cooperation to combat terrorism, strengthening measures to investigate terrorist crimes; established rewards for information on terrorism; introduces the procedure of identification of DNA of persons charged for committing terrorist crimes or any violent crime; introduced the concept of domestic terrorism and Federal crimes of terrorism, the prohibition on harboring terrorists and material support; there is a new crime — terrorist and other acts of violence against public transportation systems. The law abolished for the statute of limitations for crimes of terrorist orientation. In 2002 5 laws wer adopted: “Homeland Security Act of 2002”, “Maritime Transportation Security Act of 2002”, “Aviation and Transportation Security Act“, “Public Health Security and Bioterrorism Preparedness and Response Act of 2002”, “Terrorism Risk Insurance Act of 2002”. The Palestinian Anti-Terrorism Act was adopted in 2006. This law restricted the financial assistance to the Palestinian national authority; Haqqani Network Terrorist Designation Act of 2012 included the Haqqani Network in the list of international terrorist organizations; the political act of refusal of admission to the United States representative to the United Nations, because he was accused of the occupation of the espionage or terrorist activities against the United States and poses a threat to the national security interests of the United States.

scholarly journals Child Development and Pediatric Sport and Recreational Injuries by Age

2014 ◽  
Vol 49 (6) ◽  
pp. 780-785 ◽  
Author(s):  
David C. Schwebel ◽  
Carl M. Brezausek
Keyword(s):  
United States ◽  
Emergency Department ◽  
Emergency Departments ◽  
Injury Risk ◽  
The United States ◽  
Emergency Department Visits ◽  
Sociocultural Factors ◽  
Childhood And Adolescence ◽  
Injury Surveillance System ◽  
Sport And Recreation

Context: In 2010, 8.6 million children were treated for unintentional injuries in American emergency departments. Child engagement in sports and recreation offers many health benefits but also exposure to injury risks. In this analysis, we consider possible developmental risk factors in a review of age, sex, and incidence of 39 sport and recreational injuries. Objective: To assess (1) how the incidence of 39 sport and recreational injuries changed through each year of child and adolescent development, ages 1 to 18 years, and (2) sex differences. Design Descriptive epidemiology study. Setting: Emergency department visits across the United States, as reported in the 2001–2008 National Electronic Injury Surveillance System database. Patients or Other Participants: Data represent population-wide emergency department visits in the United States. Main Outcome Measure(s) Pediatric sport- and recreation-related injuries requiring treatment in hospital emergency departments. Results: Almost 37 pediatric sport or recreational injuries are treated hourly in the United States. The incidence of sport- and recreation-related injuries peaks at widely different ages. Team-sport injuries tend to peak in the middle teen years, playground injuries peak in the early elementary ages and then drop off slowly, and bicycling injuries peak in the preteen years but are a common cause of injury throughout childhood and adolescence. Bowling injuries peaked at the earliest age (4 years), and injuries linked to camping and personal watercraft peaked at the oldest age (18 years). The 5 most common causes of sport and recreational injuries across development, in order, were basketball, football, bicycling, playgrounds, and soccer. Sex disparities were common in the incidence of pediatric sport and recreational injuries. Conclusions: Both biological and sociocultural factors likely influence the developmental aspects of pediatric sport and recreational injury risk. Biologically, changes in perception, cognition, and motor control might influence injury risk. Socioculturally, decisions must be made about which sport and recreational activities to engage in and how much risk taking occurs while engaging in those activities. Understanding the developmental aspects of injury data trends allows preventionists to target education at specific groups.

Evaluating Policy Representation with Dynamic MRP Estimates: Direct Democracy and Same-Sex Relationship Policies in the United States

2017 ◽  
Vol 17 (4) ◽  
pp. 441-464 ◽  
Author(s):  
Daniel C. Lewis ◽  
Matthew L. Jacobsmeier
Keyword(s):  
United States ◽  
Public Policy ◽  
Public Opinion ◽  
Direct Democracy ◽  
Dynamic Models ◽  
The United States ◽  
Multilevel Regression ◽  
Same Sex ◽  
Policy Responsiveness ◽  
Policy Representation

Does direct democracy strengthen popular control of public policy in the United States? A major challenge in evaluating policy representation is the measurement of state-level public opinion and public policy. Although recent studies of policy responsiveness and congruence have provided improved measures of public opinion using multilevel regression and poststratification (MRP) techniques, these analyses are limited by their static nature and cross-sectional design. Issue attitudes, unlike more general political orientations, often vary considerably over time. Unless the dynamics of issue-specific public opinion are appropriately incorporated into the analyses, tests of policy responsiveness and congruence may be misleading. Thus, we assess the degree of policy representation in direct democracy states regarding same-sex relationship recognition policies using dynamic models of policy adoption and congruence that employ dynamic MRP estimates of attitudes toward same-sex marriage. We find that direct democracy institutions increase both policy responsiveness and congruence with issue-specific public opinion.

Sign in / Sign up

Export Citation Format

Share Document