Biomechanical Study of Rear Child Chest Injury Measures Related to Collapsing Front Seats in Rear Impacts

2003 ◽  
Author(s):  
Kenneth J. Saczalski ◽  
Anthony Sances ◽  
Srirangam Kumaresan ◽  
Steve Meyer ◽  
Joseph Lawson Burton ◽  
...  
Keyword(s):  
Surrogate Data ◽  
Rear Seat ◽  
Biomechanical Study ◽  
Test Method ◽  
Chest Injury ◽  
Motor Vehicles ◽  
Set Up ◽  
The Many ◽  
Rear Impacts ◽  
Rear Seating

Government recommendations have been made to place children into the rear seating areas of motor vehicles in order to alleviate airbag hazards in frontal impact. In most moderate to severe rear impacts, however, the adult occupied front seats will “yield” or “collapse” into the rear seat area and thus pose another potential head and chest injury hazard to the rear seated children. Numerous factors or variables, each with a wide parameter range, influence whether or not an occupied collapsing front seat will result in engagement with the rear occupant, and whether that engagement is likely to cause injury to the rear-seated occupant. A combined experimental and analytical method, employing instrumented surrogates in a sled-buck test set-up, has been utilized to study the multivariable potential injury problem of the rear-seated child in rear impact. A 3 year-old H-III surrogate, seated in the built-in booster seat of a minivan, was used as the rear seat passenger in this study. Five tests were utilized. The experimental surrogate data from the test method is combined into a “polynomial response function” that expresses “injury levels” (i.e. HIC and chest G) as a function of the many variables, and allows for analytical “interpolation and extrapolation” at variable combinations and ranges not tested. Actual accident cases were compared with the biomechanical injury measures. The present study presents a methodology to delineate the biomechanics of injuries using multivariate analysis.

An Experimental Method for Multi-Variable Analysis of Vehicle Safety Systems and Application to Front Seats and Rear Occupant Interaction in Rear Impacts

2004 ◽  
Author(s):  
Kenneth J. Saczalski ◽  
Sriringham Kumaresan ◽  
Anthony Sances ◽  
Joseph Lawson Burton ◽  
Paul R. Lewis
Keyword(s):  
Analytical Method ◽  
Cost Effective ◽  
Surrogate Data ◽  
Test Method ◽  
Factorial Method ◽  
The Many ◽  
Parameter Ranges ◽  
Rear Impacts ◽  
Injury Potential ◽  
Variable Analysis

This study presents a combined experimental-analytical method for test efficient, and cost effective, multi-variable analysis of safety system performance related to occupant injury potential analyzed over wide parameter ranges. Experimental techniques such as the “two-level factorial” method, in combination with sled-buck test set-ups (that match vehicle crash characteristics), are applied to demonstrate the technique for front seat performance as it relates to injury potential of the front occupant and rear seated children during rear impacts. The surrogate data from the above test method is combined into a “polynomial response function,” such as HIC, which is developed as a function of the many variables, and allows for analytical “interpolation and extrapolation” at variable combinations not tested. A minimum of 4 test combinations are used to establish the “polynomial injury curves” as functions of two variables (i.e. impact severity and front occupant weight) for a given seat type. Inclusion of a third variable for evaluation of “seat strength effects” can be accomplished with a minimum of 8 test combinations for the factorial method. Both front adult and rear child interactions are studied. Three year-old H-III surrogates are used for the study of rear child passengers. Plots of test generated “polynomial” multi-variable HIC level curves for the front adult and rear child surrogates are presented as functions of impact severity and front occupant weight, for various seat types. Accident case head injury data of rear-seated children is used to verify the experimental-analytical method.

Study of Seat System Performance Related to Injury of Rear Seated Children and Infants in Rear Impacts

2002 ◽  
Author(s):  
Kenneth J. Saczalski ◽  
Joseph Lawson Burton ◽  
Paul R. Lewis ◽  
Keith Friedman ◽  
Todd K. Saczalski
Keyword(s):  
Injury Risk ◽  
Rear Seat ◽  
Motor Vehicles ◽  
Front Seat ◽  
Vehicle To Vehicle ◽  
Booster Seats ◽  
Child Restraint ◽  
Speed Change ◽  
Serious Injury ◽  
Rear Impacts

Since 1996 the NHTSA has warned of the airbag deployment injury risk to front seated children and infants, during frontal impact, and they have recommended that children be placed in the rear seating areas of motor vehicles. However, during most rear impacts the adult occupied front seats will collapse into the rear occupant area and, as such, pose another potentially serious injury risk to the rear seated children and infants who are located on rear seats that are not likely to collapse. Also, in the case of higher speed rear impacts, intrusion of the occupant compartment may cause the child to be shoved forward into the rearward collapsing front seat occupant thereby increasing impact forces to the trapped child. This study summarizes the results of more than a dozen actual accident cases involving over 2-dozen rear-seated children, where 7 children received fatal injuries, and the others received injuries ranging from severely disabling to minor injury. Types of injuries include, among others: crushed skulls and brain damage; ruptured hearts; broken and bruised legs; and death by post-crash fires when the children became entrapped behind collapsed front seat systems. Several rear-impact crash tests, utilizing sled-bucks and vehicle-to-vehicle tests, are used to examine the effects of front seat strength and various types of child restraint systems, such as booster seats and child restraint seats (both forward and rearward facing), in relation to injury potential of rear seated children and infants. The tests utilized sedan and minivan type vehicles that were subjected to speed changes ranging from about 20 to 50 kph (12 to 30 mph), with an average G level per speed change of about 9 to 15. The results indicate that children and infants seated behind a collapsing driver seat, even in low severity rear impacts of less than 25 kph, encounter a high risk of serious or fatal injury, whether or not rear intrusion takes place. Children seated in other rear seat positions away from significant front seat collapse, such as behind the stronger “belt-integrated” types of front seats or rearward but in between occupied collapsing front seat positions, are less likely to be as seriously injured.

scholarly journals Laboratory experiment on the nano-TiO2 photocatalytic degradation effect of road surface oil pollution

2020 ◽  
Vol 9 (1) ◽  
pp. 922-933
Author(s):  
Qing’e Wang ◽  
Kai Zheng ◽  
Huanan Yu ◽  
Luwei Zhao ◽  
Xuan Zhu ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Oil Pollution ◽  
Road Surface ◽  
Test Method ◽  
Driving Safety ◽  
The Road ◽  
Road Surfaces ◽  
The Many ◽  
The Impact ◽  
Degradation Effect

AbstractOil leak from vehicles is one of the most common pollution types of the road. The spilled oil could be retained on the surface and spread in the air voids of the road, which results in a decrease in the friction coefficient of the road, affects driving safety, and causes damage to pavement materials over time. Photocatalytic degradation through nano-TiO2 is a safe, long-lasting, and sustainable technology among the many methods for treating oil contamination on road surfaces. In this study, the nano-TiO2 photocatalytic degradation effect of road surface oil pollution was evaluated through the lab experiment. First, a glass dish was used as a substrate to determine the basic working condition of the test; then, a test method considering the impact of different oil erosion degrees was proposed to eliminate the effect of oil erosion on asphalt pavement and leakage on cement pavement, which led to the development of a lab test method for the nano-TiO2 photocatalytic degradation effect of oil pollution on different road surfaces.

Effects of high and low doses of methimazole in patients with Graves' thyrotoxicosis

1987 ◽  
Vol 116 (1_Suppl) ◽  
pp. S312-S317 ◽  
Author(s):  
G. Benker ◽  
D. Reinwein ◽  
H. Creutzig ◽  
H. Hirche ◽  
W. D. Alexander ◽  
...  
Keyword(s):  
Antithyroid Drug ◽  
Drug Dosage ◽  
Antithyroid Drugs ◽  
Graves Disease ◽  
Duration Of Treatment ◽  
Disease Heterogeneity ◽  
Remission Rates ◽  
Set Up ◽  
The Many ◽  
The Impact

Abstract. In spite of the long-established use of antithyroid drugs, there are many unsettled questions connected with this treatment of Graves' disease. There is a lack of controlled prospective trials studying the results of antithyroid drug therapy while considering the many variables such as disease heterogeneity, regional differences, drug dosage and duration of treatment. Therefore, a multicenter study has been set up in order to compare the effects of two fixed doses of methimazole (10 vs 40 mg) with thyroid hormone supplementation on the clinical, biochemical and immunological course of Graves' disease and on remission rates. Experience accumulated so far suggests that treatment is safe using either 10 or 40 mg of methimazole. While there is a tendency for an advantage of the higher dose within the first weeks (higher effectiveness in controlling hyperthyroidism), this difference is not significant. The impact of dosage on remission rates remains to be shown.

scholarly journals A new methodology for monitoring P. oceanica meadows in Tavolara Punta Coda Cavallo MPA using GIS

2015 ◽  
Author(s):  
Pieraugusto Panzalis ◽  
Andrea Deiana ◽  
Sarah Caronni ◽  
Augusto Navone
Keyword(s):  
Scale Up ◽  
Continuous Mapping ◽  
Detailed Knowledge ◽  
Regular Grid ◽  
Side Scan Sonar ◽  
Sea Bottom ◽  
The Status ◽  
Square Cells ◽  
Set Up ◽  
The Many

Marine Protected Areas (MPAs) are acknowledged globally as effective tools for the protection and management of the marine environment; however, to get effective results it is necessary to set up a proper and continuous mapping of the marine territory, in order to gain detailed knowledge of its different aspects. Therefore, the implementation and maintenance of a modern GIS (Geographic Information System) has become an indispensable task for the MPA of Tavolara - Punta Coda Cavallo to collect, aggregate, classify, and track the conducted mapping activities. Between 2011 and 2012 the sea bottom of the MPA was surveyed using different methods: by means of a multi-beam echo sounder and of a side scan sonar, as well as conducting fast scientific scuba divings with re-breathers and underwater position system technologies. High resolution geodatasets, characterized by a significantly high quality in representing and describing the sea bottom and its habitats, were produced in both feature (scale up to 1:1.250) and raster formats (up to 30cm/pixel for sonar images and 1m/pixel for bathymetry) and they currently constitute the basis of the MPA's GIS, including its 3D applications and its web map services for desktop and mobile devices (iPhone & Android). To update the above described geodatasets during time, acquiring new data on the conservation targets considered in monitoring activities, among which the status of P. oceanica meadows is of the most important ones, a long term mapping plan was realized on the basis of an innovative methodology elaborated by the MPA considering both the wideness of the area and the limited funds available at present. The whole MPA was divided in territorial units by means of a regular grid of square cells having a 100m side with the logic of starting the mapping activities from the mainly important areas and then to spread the surveys up to fill the whole mosaic. All the new data acquired with this methodology could then be mixed, compared and indexed within the same cell and/or in the many already available geodatases, starting from those dated 2006 having a regular grid with square cells of 500m per side.

scholarly journals En dynamisk kulturarv – Dybbøls 12 metamorfoser

1970 ◽  
pp. 55
Author(s):  
Inge Andriansen
Keyword(s):  
Cultural Heritage ◽  
Cultural Landscape ◽  
Local Population ◽  
Active Role ◽  
Large Mass ◽  
Mass Graves ◽  
North East ◽  
The World ◽  
Set Up ◽  
The Many

Dybbøl is the brow of a hill located about 30 km north-east of the border between Denmark and Germany. This area was once the former Danish Duchy of Schleswig, which was under German rule in the period from 1864 to 1920. Dybbøl was also the site of intense fighting during the Schleswig-Holstein Revolt of 1848–50 and the Danish-German War of 1864. There are remains of both Danish and German fortifications and earthworks, along with large mass graves in which troops from Denmark, Schleswig-Holstein and Germany lie buried. After a plebiscite about the placing of the border was held in 1920, Schleswig was divided up, and the northern part – which included Dybbøl – became part of Denmark. This was followed by a comprehensive ”Danishification” of the cultural landscape, which had previously been dominated by a large Prussian victory monument and numerous German memorial stones. A Danish national park was set up at Dybbøl in 1924, with the backing of the local population and financial sup- port from a national collection appeal, and formally opened by the Danish prime minister. After this, Dybbøl became the epitome of the institutionalised cultural heritage of the state of Denmark, and would almost certainly be included in any ”cultural canon” of the most significant geographical locations that have helped shape the Danish sense of national identity. However, Dybbøl also features another – less comfortable – aspect of the Danish cultural heritage, bearing witness to Danish acts of vandalism perpetrated against the German monuments found here. Any study of the use of the history associated with Dybbøl uncovers layer upon layer of episodes that speak of conflicting interests and countless metamorphoses that led to the site being imbued with new values and a sequence of new identities. And in step with the resurgence of nationalist sentiments in Denmark since the mid-1980s, there has been a corresponding, strengthened re-annexation of the cultural heritage associated with Dybbøl. The need to cling on to and retain establis- hed, familiar positions and a fundamental sense of belonging are well-known aspects of the process of globalisation, and are seen throughout the world. In Dybbøl, this deep-felt need has resulted in the construction of a Danish fortification, and the Danish flag flying atop the many flagpoles has become more frequent sight. This process can also be interpreted as an expression of Danish foreign policy taking on a more active role in the world.

Logic of many-sorted theories

1952 ◽  
Vol 17 (2) ◽  
pp. 105-116 ◽  
Author(s):  
Hao Wang
Keyword(s):  
Identity Relation ◽  
Predicate Calculus ◽  
Axiomatic Theory ◽  
Quantification Theory ◽  
System 2 ◽  
Usual Theory ◽  
Set Up ◽  
The Many ◽  
Axiomatic Systems

Certain axiomatic systems involve more than one category of fundamental objects; for example, points, lines, and planes in geometry; individuals, classes of individuals, etc. in the theory of types or in predicate calculi of orders higher than one. It is natural to use variables of different kinds with their ranges respectively restricted to different categories of objects, and to assume as substructure the usual quantification theory (the restricted predicate calculus) for each of the various kinds of variables together with the usual theory of truth functions for the formulas of the system. An axiomatic theory set up in this manner will be called many-sorted. We shall refer to the theory of truth functions and quantifiers in it as its (many-sorted) elementary logic, and call the primitive symbols and axioms (including axiom schemata) the proper primitive symbols and proper axioms of the system. Our purpose in this paper is to investigate the many-sorted systems and their elementary logics.Among the proper primitive symbols of a many-sorted system Tn (n = 2, …, ω) there may be included symbols of some or all of the following kinds: (1) predicates denoting the properties and relations treated in the system; (2) functors denoting the functions treated in the system; (3) constant names for certain objects of the system. We may either take as primitive or define a predicate denoting the identity relation in Tn.

American Soldiers and Okinawan Women

2017 ◽  
Author(s):  
Etsuko Takushi Crissey
Keyword(s):  
Vietnam War ◽  
Biracial Children ◽  
Civilian Leaders ◽  
Women And Children ◽  
Intimate Relations ◽  
Set Up ◽  
The Many ◽  
The Right ◽  
First Time ◽  
The U.S

In September, 1945, with most Okinawans still in refugee camps, the U.S. military ordered elections for civilian leaders in which women were granted the right to vote for the first time, seven months earlier than in mainland Japan. Yet they were far more concerned about the many rapes committed by American soldiers. Women and girls were abducted from fields while searching for food, dragged away from their homes, and assaulted in front of their families. After months of inaction, the U.S. military decided to set up “special amusement areas” for prostitution in certain towns. Some Okinawans favoured this policy as a “breakwater” to protect women and children of “good” families, while others opposed it as exploitation of women. In 1967, at the peak of the Vietnam War, an estimated 10,000 women engaged in prostitution. In 1948 the U.S. military rescinded a ban on marriages between U.S. soldiers and Okinawan women that failed to prevent couples from having intimate relations and living together. Still, commanding officers pressured soldiers not to marry, threatening disciplinary transfers. By 1967, among thousands of biracial children in Okinawa, about half were raised by mothers or their relatives with little or no financial support from fathers.

Challenges of Civil Military Cooperation/Coordination in Humanitarian Relief

2013 ◽  
pp. 399-424 ◽  
Author(s):  
Graham Heaslip
Keyword(s):  
Media Coverage ◽  
Disaster Relief ◽  
Aid Workers ◽  
Humanitarian Organizations ◽  
Military Forces ◽  
Working Together ◽  
The Media ◽  
Interagency Relationships ◽  
Set Up ◽  
The Many

The term civil military coordination (CIMIC) suggests the seamless division of labor between aid workers and international military forces. The images of humanitarian organizations distributing food and medicines under the protection of military forces, or aid workers and military working together to construct refugee camps, set up field hospitals, provide emergency water and sanitation, et cetera, has become more frequent. The media coverage from crises such as New Orleans, Kosovo, the tsunami in Asia, Pakistan, Liberia, Sierra Leone, Chad, and more recently Haiti and Japan, has heightened the expectation of a smooth interaction between humanitarian organizations and military forces. Due to fundamental differences between international military forces, humanitarian and development organizations (in terms of the principles and doctrines guiding their work, their agendas, operating styles, and roles), the area of civil military coordination in disaster relief has proven to be more difficult than other interagency relationships. This chapter will identify the many factors that render integration and collaboration problematic between diverse organizations, and especially so between civilian and military agencies. The chapter will conclude with proposals to improve CIMIC within disaster relief.

Pandora’s Blocks

2020 ◽  
pp. 11-30
Author(s):  
Jack Parkin
Keyword(s):  
Short History ◽  
Key Stakeholders ◽  
Political Economies ◽  
History Of ◽  
Technical Functions ◽  
Set Up ◽  
The Many

Chapter 1 opens the lid on Bitcoin so that all of its attributes, problems, and connotations come spilling out. At the same time, it pulls these disparate strands back into focus by outlining the many discrepancies examined in subsequent chapters. So while in some ways the chapter acts like a primer for cryptocurrencies, blockchains, and their political economies, the material laid out works to set up the book’s underlying argument: asymmetric concentrations of power inevitably form though processes of algorithmic decentralisation. In the process, a short history of Bitcoin introduces some of its key stakeholders as well as some of its core technical functions.

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