نتایج جستجو برای: collision analysis

تعداد نتایج: 2862863  

2011
Prapassara Pupunwiwat Peter Darcy Bela Stantic

Radio Frequency Identification (RFID) uses wireless radio frequency technology to automatically identify tagged objects. Despite the extensive development of RFID technology, tag collisions still remains a major drawback. The collision issue can be solved by using anti-collision techniques. While existing research has focused on improving anti-collision methods alone, it is essential that the s...

Journal: :Journal of Physics: Conference Series 2020

Journal: :IACR Transactions on Cryptographic Hardware and Embedded Systems 2021

Journal: :archives of trauma research 0
rebecca stier department of cranio maxillofacial surgery, hannover medical school, hannover, germany; department of cranio maxillofacial surgery, hannover medical school (mhh), carl-neuberg-strasse 1, d-30625 hannover, germany. tel: +49-5115324748, fax: +49-5115324740 dietmar otte department for accident research, hannover medical school, hannover, germany christian müller trauma department, hannover medical school, hannover, germany maximilian petri trauma department, hannover medical school, hannover, germany ralph gaulke trauma department, hannover medical school, hannover, germany christian krettek trauma department, hannover medical school, hannover, germany

conclusions higher age of cyclists and increasing speed of the accident opponent significantly increase the likelihood of sustaining facial fractures. the use of bicycle helmets does not significantly reduce the incidence of mid-facial fractures, while being correlated with an even increased incidence of mandibular fractures. background the effectiveness of bicycle safety helmets in preventing ...

Journal: :Proceedings of the Royal Society B: Biological Sciences 2013

Bahram Rezai, Behzad Shahbazi Mohammad Noparast, Sayed Mohammad Javad Koleini

In this research, the effect of bubble surface area flux, Sb, and particle size on flotation rate constant, k, of pyrite (FeS2) particles was studied using bubble-particle interactions. The bubble-particle collision, attachment and detachment efficiencies were calculated under different flow regimes. The k increased with increase in the collision efficiency and decreas...

ژورنال: Journal of Railway Research 2019

This research presents a risk-based Hotspots identification model at highway-rail grade crossings in Canada. Two sets of models were developed to predict collision frequency and consequence at individual crossings. A two–dimensional graphic approach was adopted to combine these two models together to predict the risk at each crossing. Hotspots based on collision history tended to be widespread ...

Journal: :Journal of cell science 1978
C W Evans J Proctor

We have obtained data on the frequency of aggregates of different size classes and on the maximum aggregate diameter of lymphoid cells subjected to aggregation in the laminar shear field of a Couette viscometer. Maximum aggregate diameter reached a plateau level during aggregation. This plateau is considered to be the result of a balance between the hydrodynamic shear forces tending to resist t...

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