Results 241 to 250 of about 109,854 (301)
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The Physician and Sportsmedicine, 1980
The increase in the use of bicycles has been paralleled by an increase in bicycle accidents. Safety education programs, especially for young people, might reduce the number of injuries.
Michael W, Davis +3 more
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The increase in the use of bicycles has been paralleled by an increase in bicycle accidents. Safety education programs, especially for young people, might reduce the number of injuries.
Michael W, Davis +3 more
openaire +2 more sources
Pediatrics, 2001
Bicycling remains one of the most popular recreational sports among children in America and is the leading cause of recreational sports injuries treated in emergency departments. An estimated 23 000 children younger than 21 years sustained head injuries (excluding the face) while bicycling in 1998. The bicycle helmet is a very effective device that can
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Bicycling remains one of the most popular recreational sports among children in America and is the leading cause of recreational sports injuries treated in emergency departments. An estimated 23 000 children younger than 21 years sustained head injuries (excluding the face) while bicycling in 1998. The bicycle helmet is a very effective device that can
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, 2020
Sharing bicycles is a widely recognized way to reduce resource consumption, promote green travel and improve traffic efficiency, yet the discrepancy between bicycle distribution and demand limits its impact on sustainable economic development.
Tao Jie, Wendong Wei, Lu Jiang
semanticscholar +1 more source
Sharing bicycles is a widely recognized way to reduce resource consumption, promote green travel and improve traffic efficiency, yet the discrepancy between bicycle distribution and demand limits its impact on sustainable economic development.
Tao Jie, Wendong Wei, Lu Jiang
semanticscholar +1 more source
Autonomous Bicycles: A New Approach To Bicycle-Sharing Systems
2020 IEEE 23rd International Conference on Intelligent Transportation Systems (ITSC), 2020In the current paradigm of rapid urban growth, it is critical to create new and innovative mobility solutions that ensure an efficient, inexpensive and reliable flow of people throughout the city.
N. Sánchez, L. Pastor, K. Larson
semanticscholar +1 more source
Current Sports Medicine Reports, 2013
Bicycling injuries can be classified into bicycle contact, traumatic, and overuse injuries. Despite the popularity of cycling, there are few scientific studies regarding injuries. Epidemiological studies are difficult to compare due to different methodologies and the diverse population of cyclists studied.
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Bicycling injuries can be classified into bicycle contact, traumatic, and overuse injuries. Despite the popularity of cycling, there are few scientific studies regarding injuries. Epidemiological studies are difficult to compare due to different methodologies and the diverse population of cyclists studied.
openaire +2 more sources
Science of the Total Environment, 2020
In recent years, bicycle sharing has become more popular in cities and towns around the world. Public bicycles are one of the important forms of bicycle sharing.
Zhaohua Wang +3 more
semanticscholar +1 more source
In recent years, bicycle sharing has become more popular in cities and towns around the world. Public bicycles are one of the important forms of bicycle sharing.
Zhaohua Wang +3 more
semanticscholar +1 more source
Scientific American, 1884
I AM obliged to Mr. Housman for pointing out a slip of expression in my review of Mr. Sharp's book. I had not confused the ratio of the I's for the ratio of the D's, but merely inadvertently used the word “stiffness” in its colloquial and more extended sense, so to include resistance to forces which would seriously bend or damage, as well as to those ...
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I AM obliged to Mr. Housman for pointing out a slip of expression in my review of Mr. Sharp's book. I had not confused the ratio of the I's for the ratio of the D's, but merely inadvertently used the word “stiffness” in its colloquial and more extended sense, so to include resistance to forces which would seriously bend or damage, as well as to those ...
openaire +1 more source
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2018
Wireless power transfer chargers for electric bicycles (EBs) have many advantages over transitional plug-in systems. However, to meet the charge requirements, the traditional charger needs a dedicated inverter to achieve constant current (CC) output or ...
Y. Chen +5 more
semanticscholar +1 more source
Wireless power transfer chargers for electric bicycles (EBs) have many advantages over transitional plug-in systems. However, to meet the charge requirements, the traditional charger needs a dedicated inverter to achieve constant current (CC) output or ...
Y. Chen +5 more
semanticscholar +1 more source
Acta Mathematica Hungarica, 1997
The author considers a more general structure theory of simple semigroups, the basic idea being to give a construction where the term ``group'' is replaced by the term ``monoid'' [see: \textit{D. Rees}, Q. J. Math., Oxf. Ser. 19, 101-108 (1948; Zbl 0030.00802)]. The resulting construction is called a bicyclic extension.
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The author considers a more general structure theory of simple semigroups, the basic idea being to give a construction where the term ``group'' is replaced by the term ``monoid'' [see: \textit{D. Rees}, Q. J. Math., Oxf. Ser. 19, 101-108 (1948; Zbl 0030.00802)]. The resulting construction is called a bicyclic extension.
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New England Journal of Medicine, 1971
For almost a century the bicycle has been used in the United States as a recreational medium for children and adults. This function has contrasted sharply with that of many other countries, where transportation has been the bicycle's most important use.
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For almost a century the bicycle has been used in the United States as a recreational medium for children and adults. This function has contrasted sharply with that of many other countries, where transportation has been the bicycle's most important use.
openaire +2 more sources