Search

Your search keyword '"Song, Qipeng"' showing total 254 results
Start Over Author "Song, Qipeng" Publication Year Range Last 10 years
254 results on '"Song, Qipeng"'

1. On Efficient Federated Learning for Aerial Remote Sensing Image Classification: A Filter Pruning Approach

Author

Song, Qipeng, Cao, Jingbo, Li, Yue, Gao, Xueru, Shangguan, Chengzhi, Liang, Linlin, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Luo, Biao, editor, Cheng, Long, editor, Wu, Zheng-Guang, editor, Li, Hongyi, editor, and Li, Chaojie, editor

Published
2024
Full Text
View/download PDF

14. An Analytical Model for S-ALOHA Performance Evaluation in M2M Networks

Author

Song, Qipeng, Lagrange, Xavier, and Nuaymi, Loutfi

Subjects
Computer Science - Networking and Internet Architecture
Abstract

The S-ALOHA (i.e. slotted-ALOHA) protocol is recently regaining interest in Lower Power Wide Area Networks (LPWAN) handling M2M traffic. Despite intensive studies since the birth of S-ALOHA, the special features of M2M traffic and requirements highlight the importance of analytical models taking into account performance-affecting factors and giving a thorough performance evaluation. Fulfilling this necessity is the main focus of this paper: we jointly consider the impact of capture effect, diversity of transmit power levels with imperfect power control. We propose a low-complexity but still accurate analytical model capable of evaluating S-ALOHA in terms of packet loss rate, throughput, energy-efficiency and average number of transmissions. The proposed model is able to facilitate dimensioning and design of S-ALOHA based LPWAN. The comparison between simulation and analytical results confirms the accuracy of our proposed model. The design guides about S-ALOHA based LPWAN deduced from our model are: the imperfect power control can be positive with capture effect and and appropriate transmit power diversity strategy. The transmit power diversity strategy should be determined by jointly considering network charges level, power control precision and capture ratio to achieve optimal performance of S-ALOHA., Comment: 7 pages, 4 figurs, submmited to ICC2017

Published
2016

22. Footprints: Ensuring Trusted Service Function Chaining in the World of SDN and NFV

Author

Pattaranantakul, Montida, Song, Qipeng, Tian, Yanmei, Wang, Licheng, Zhang, Zonghua, Meddahi, Ahmed, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin (Sherman), Editorial Board Member, Stan, Mircea, Editorial Board Member, Jia, Xiaohua, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Chen, Songqing, editor, Choo, Kim-Kwang Raymond, editor, Fu, Xinwen, editor, Lou, Wenjing, editor, and Mohaisen, Aziz, editor

Published
2019
Full Text
View/download PDF

27. Performance of Selection Combining Macro Diversity with Outage Probability Constraint in LPWAN

Author

Song, Qipeng, Lagrange, Xavier, Nuaymi, Loutfi, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Montavont, Nicolas, editor, and Papadopoulos, Georgios Z., editor

Published
2018
Full Text
View/download PDF

42. Effects of Eight Methods and Five Steps of Tai Chi Practice on Balance Control Among Older Adults.

Author

Hu, Xiu, Lyu, Shaojun, Mao, Min, Zhang, Jianwei, Sun, Wei, Zhang, Cui, and Song, Qipeng

Subjects
PROPRIOCEPTION, TAI chi, OLDER people, ROOT-mean-squares, SOCIAL interaction, RESEARCH, POSTURAL balance, RESEARCH methodology, MEDICAL cooperation, EVALUATION research, COMPARATIVE studies, RANDOMIZED controlled trials, FOOT
Abstract

The team developed the newly compiled eight methods and five steps of Tai Chi (EMFSTC), which includes introductory routines to Tai Chi characterized by simple structures. This study examined the effectiveness of EMFSTC practice on balance control. A total of 31 participants were randomly assigned to EMFSTC (n = 15, age = 66.4 ± 1.7 years, received 16-week EMFSTC practice) or control (n = 16, age = 66.7 ± 1.8 years, received no practice) groups. Significant group by training interactions were observed. After EMFSTC practice, balance control improved, as indicated by decreased root mean square and mean velocity of center of pressure, proprioception threshold during knee extension, and plantar tactile sensitivity threshold at the arch. EMFSCT can be an effective rehabilitation modality to improve balance control among older adults. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

48. Muscle co-contraction and pre-activation in knee and ankle joint during a typical Tai Chi brush-knee twist-step.

Author

Yu, Hao, Wang, JiangNa, Mao, Min, Song, QiPeng, Zhang, Cui, Fong, Daniel T.P., and Sun, Wei

Subjects
KNEE joint, MUSCLE contraction, ANALYSIS of variance, RECTUS femoris muscles, ANKLE joint, MULTIVARIATE analysis, TAI chi, TIBIALIS anterior, WALKING, DESCRIPTIVE statistics, RESEARCH funding, CALF muscles, BIOMECHANICS, ELECTROMYOGRAPHY
Abstract

This study aimed to investigate the co-contraction and pre-activation of agonistic and antagonistic muscles in experienced Tai Chi (TC) practitioners during normal walking (NW) and brush-knee twist-step (BKTS). The electromyographic activities of rectus femoris, biceps femoris, and tibialis anterior and lateral gastrocnemius muscles were collected during BKTS and NW in 28 TC practitioners. The pre-activation of knee and ankle joints before initial landing of left foot, and the co-contraction of knee and ankle joint in double-stance phase I (DSI), single-stance phase (SS), double-stance phase II (DSII), and swing phase (SW) were calculated during BKTS and NW. Ankle co-contraction significantly increased during DSI and SS in BKTS movements than compared with that in NW. For DSI and SW, SS and DSII, and DSII and SW, a significant difference was found in BKTS. The pre-activation of knee joint significantly decreased in BKTS and NW. This study indicated greater ankle joint muscle co-contraction in DSI and SS of stance phase and lower knee joint muscle co-contraction and pre-activation than in NW in BKTS movement. In addition, greater ankle joint muscle co-contraction was observed in the DSI, SS, and DSII of stance phase than those of swing phase in BKTS movement. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results