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- Yang, Jikuang, 1948, et al.
(författare)
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Finite element analysis of thorax responses under quasi-static and dynamic loading
- 2013
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Ingår i: Computational Biomechanics for Medicine: Models, Algorithms and Implementation. - New York, NY : Springer New York. - 9781461463511 ; , s. 197-211
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This study aimed at investigation of the response of the human thorax under various loading conditions. For this purpose an FE thorax model was developed based on the human anatomical structures. The human thorax consists of ribs, thoracic vertebrae and intervertebral discs, a sternum, costal cartilages and internal organs. Material properties used in this study were based on the published literature. The FE model was used to simulate the phenomenon of thorax compression. The simulations were carried out in different configurations, including the three-point bending of single rib and frontal impacting with a cylinder to a complete thorax at low speed. The results from simulations were compared with the impact responses obtained from biological tests, such as 3-point bending tests and rib structural tests. The entire thorax model was then tested by simulation of volunteer test. The responses predicted by the simulation showed a good biofidelity.
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- Yu, J., et al.
(författare)
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Broadband radio-over-fiber technologies for next-generation wireless systems
- 2019
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Ingår i: Optical Fiber Telecommunications VII. - : Elsevier. - 9780128165027 ; , s. 979-1038
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The ever-increasing bandwidth demand has motivated the exploration of radio-over-fiber (RoF) for future broadband 5G+ cellular communication networks. The integration of RoF networks makes full use of the huge bandwidth offered by fiber link and the mobility feature presented via wireless link, and therefore it can satisfy the various demands of the access network on the capacity and mobility enhancement as well as the power consumption and cost reduction. Therefore future broadband access networks based on RoF technologies will provide an affordable alternative solution in various application scenarios, including conference centers, airports, hotels, shopping malls, and ultimately homes and small offices. It is expected that, in the future optical-wireless access networks, the millimeter-wave (mm-wave) bands will be utilized to solve the problem of the frequency congestion and to meet the demand for higher signal bandwidth. In this chapter several key enabling technologies for very high throughput RoF networks are reviewed, including simple and cost-effective broadband optical mm-wave signal generation and transmission, multidimensional multiplexing techniques to improve the transmission capacity, radio-frequency-transparent photonic demodulation technique applied for novel RoF network architecture, and low-complexity high-efficiency digital signal processing for RoF systems. We also summarize recent progress on RoF system, including field trials of high-speed and long-distance delivery using these enabling techniques. The results show that the integrated systems are practical solutions to offer very high throughput wireless to end users in optically enabled RoF systems.
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