In vehicle Ad-hoc netwok （VANET）, traffic load is often unevenly distributed among access points （APs）. Such load imbalance hampers the network from fully utilizing the network capacity. To alleviate such imbalanc...In vehicle Ad-hoc netwok （VANET）, traffic load is often unevenly distributed among access points （APs）. Such load imbalance hampers the network from fully utilizing the network capacity. To alleviate such imbalance, the paper introduces a novel pricing game model. The research scene is at the intersection when the traffic light is green. As vehicles are highly mobile and the network typology changes dynamically, the paper divides the green light time into equal slots and calculates APs＇ prices with the presented pricing game in each time slot. The whole process is a repeated game model. The final equilibrium solution set is APs＇ pricing strategy, and the paper claim that this equilibrium solution set can affect vehicles＇ selection and ensure APs＇ load-balancing. Simulation results based on a realistic vehicular traffic model demonstrate the effectiveness of the game method.展开更多
Recovery from stroke needs different time and speed in every case depending on the brain capacity of neural plasticity. Based on neurophysiological researches high repetition of practice is required to induce neuropla...Recovery from stroke needs different time and speed in every case depending on the brain capacity of neural plasticity. Based on neurophysiological researches high repetition of practice is required to induce neuroplastic changes and functional recovery of motor deficits. However, data from earlier studies shows that stroke patients generally perform a very limited number of movement repetitions in traditional therapy sessions. Virtual Reality therapy was found to be beneficial in improving trunk, hand, upper and lower extremity functions. However, reviews found no definitive conclusions regarding balance. The present study focuses on evaluating the efficacy of Nintendo WiiTM on balance and gait functions of stroke patients. Twenty one hemiparetic stroke patients were randomly assigned to either control or therapy groups. Effectiveness was evaluated by Fugl-Meyer balance subtest, Functional Ambulation Categories （FAC）, Romberg （R）, sharpened Romberg （SR）, one-legged stance （OLS）, six-meter walking test （6MWT） and timed up and go test （TUG）. The analysis revealed a significant effect of training with Nintendo Wii M for FAC z = 0.0267, FMBS z = 0.0046, OLST2 z = 0.0068 and OLS1 z = 0.0067 （affected side）. The control group demonstrated improvement in R （z = 0.0474） and SR （z = 0.0411）. In both groups improvement was detected in functional mobility and 6MWT （control group z = 0.0069, Wii groupz = 0.0123）. No significant differences were found between groups. Findings of the current study support that balance treatment with Nintendo WiiTM is similarly effective method to improve static balance and functional mobility when compared with conventional therapy.展开更多
基金supported by the Open Research Fund from the Key Laboratory for Computer Network and Information Integration (Southeast University, Ministry of Education, China)the Fundamental Research Funds for the Central Universities+4 种基金National Key Technology R&D Program (2011BAK02B02-01),National Key Technology R&D Program of China (2011BAK02B02)the Hi-Tech Research and Development Program of China (2012AA111902)State Key Development Program for Basic Research of China (2011CB302902)the National Natural Science Foundation of China (61073180)National Science and Technology Major Project (2010ZX03006-002-03)
文摘In vehicle Ad-hoc netwok （VANET）, traffic load is often unevenly distributed among access points （APs）. Such load imbalance hampers the network from fully utilizing the network capacity. To alleviate such imbalance, the paper introduces a novel pricing game model. The research scene is at the intersection when the traffic light is green. As vehicles are highly mobile and the network typology changes dynamically, the paper divides the green light time into equal slots and calculates APs＇ prices with the presented pricing game in each time slot. The whole process is a repeated game model. The final equilibrium solution set is APs＇ pricing strategy, and the paper claim that this equilibrium solution set can affect vehicles＇ selection and ensure APs＇ load-balancing. Simulation results based on a realistic vehicular traffic model demonstrate the effectiveness of the game method.
文摘Recovery from stroke needs different time and speed in every case depending on the brain capacity of neural plasticity. Based on neurophysiological researches high repetition of practice is required to induce neuroplastic changes and functional recovery of motor deficits. However, data from earlier studies shows that stroke patients generally perform a very limited number of movement repetitions in traditional therapy sessions. Virtual Reality therapy was found to be beneficial in improving trunk, hand, upper and lower extremity functions. However, reviews found no definitive conclusions regarding balance. The present study focuses on evaluating the efficacy of Nintendo WiiTM on balance and gait functions of stroke patients. Twenty one hemiparetic stroke patients were randomly assigned to either control or therapy groups. Effectiveness was evaluated by Fugl-Meyer balance subtest, Functional Ambulation Categories （FAC）, Romberg （R）, sharpened Romberg （SR）, one-legged stance （OLS）, six-meter walking test （6MWT） and timed up and go test （TUG）. The analysis revealed a significant effect of training with Nintendo Wii M for FAC z = 0.0267, FMBS z = 0.0046, OLST2 z = 0.0068 and OLS1 z = 0.0067 （affected side）. The control group demonstrated improvement in R （z = 0.0474） and SR （z = 0.0411）. In both groups improvement was detected in functional mobility and 6MWT （control group z = 0.0069, Wii groupz = 0.0123）. No significant differences were found between groups. Findings of the current study support that balance treatment with Nintendo WiiTM is similarly effective method to improve static balance and functional mobility when compared with conventional therapy.
