1,269 research outputs found
Turbo multi-user detection for OFDM/SDMA systems relying on differential evolution aided iterative channel estimation
No full textA differential evolution (DE) algorithm aided iterative channel estimation and turbo multi-user detection (MUD) scheme is proposed for multi-user multi-input multiple-output aided orthogonal frequency-division multiplexing/spacedivision multiple-access (OFDM/SDMA) systems. The proposed scheme iteratively exchanges the estimated channel information and the detected data between the channel estimator and MUD employing a turbo technique, which gradually improves the accuracy of the channel estimation and the MUD, especially for the first iteration. Quadrature amplitude modulation (QAM) is employed in most wireless standards by virtue of providing a high throughput. However, the optimal maximum likelihood (ML)-MUD becomes extremely complex for employment in QAM-aided multi-user systems. Hence, two different DE aided MUD schemes, the DE aided minimum symbol error rate (MSER)-MUD as well as the discrete DE aided ML-MUD, were developed, and their achievable performance versus complexity was characterized. The simulation results demonstrate that the proposed DE aided channel estimator is capable of approaching the Cramer-Rao lower bound with just two or three iterations. The ultimate bit error rate lower-bound of the single-user additive white Gaussian noise scenario has been approached in the range of E_{b}/N_{0}\ge 10 dB and E_{b}/N_{0}\ge 6 dB for the DE aided MSER-MUD and the discrete DE aided ML-MUD, respectively
CBNRM [Community Based Natural Resources Management] field-visit
No full textProducers: Liu Lin, Wei Guang and HailongEditors: LiHe JiMiao and ZhaojingjuanDirectors: Liu Xiaomin and Zhou Xiupin
sj-pdf-2-tar-10.1177_17534666211049739 – Supplemental material for The predictive role of lymphocyte subsets and laboratory measurements in COVID-19 disease: a retrospective study
No full textSupplemental material, sj-pdf-2-tar-10.1177_17534666211049739 for The predictive role of lymphocyte subsets and laboratory measurements in COVID-19 disease: a retrospective study by Lin Wang, Jun Chen, Jun Zhao, Feng Li, Shuihua Lu, Ping Liu, Xu-hui Liu, Qin Huang, He Wang, Qing nian Xu, Xiaomin Liu, Shijun Yu, Li Liu and Hongzhou Lu in Therapeutic Advances in Respiratory Disease</p
sj-docx-1-tar-10.1177_17534666211049739 – Supplemental material for The predictive role of lymphocyte subsets and laboratory measurements in COVID-19 disease: a retrospective study
No full textSupplemental material, sj-docx-1-tar-10.1177_17534666211049739 for The predictive role of lymphocyte subsets and laboratory measurements in COVID-19 disease: a retrospective study by Lin Wang, Jun Chen, Jun Zhao, Feng Li, Shuihua Lu, Ping Liu, Xu-hui Liu, Qin Huang, He Wang, Qing nian Xu, Xiaomin Liu, Shijun Yu, Li Liu and Hongzhou Lu in Therapeutic Advances in Respiratory Disease</p
Thalamocortical mechanisms for nostalgia-induced analgesia
No full textMing Zhang, Ziyan Yang, Jiahui Zhong, Yuqi Zhang, Xiaomin Lin, Huajian Cai, Yazhuo Kong
Figure materials supported the submission of JN-RM-2123-21, Journal of Neuroscience
In this repository, we share the figures used in the study. Other materials that support the findings of this study also are available upon request
Thalamocortical mechanisms for nostalgia-induced analgesia
No full textMing Zhang, Ziyan Yang, Jiahui Zhong, Yuqi Zhang, Xiaomin Lin, Huajian Cai, Yazhuo Kong
Figure materials supported the submission of JN-RM-2123-21, Journal of Neuroscience
In this repository, we share the figures used in the study. Other materials that support the findings of this study also are available upon request
Thalamocortical mechanisms for nostalgia-induced analgesia
No full textMing Zhang, Ziyan Yang, Jiahui Zhong, Yuqi Zhang, Xiaomin Lin, Huajian Cai, Yazhuo Kong
Figure materials supported the submission of JN-RM-2123-21, Journal of Neuroscience
In this repository, we share the figures used in the study. Other materials that support the findings of this study also are available upon request
Effects of Hypothermia on S100B and Glial Fibrillary Acidic Protein in Asphyxia Rats After Cardiopulmonary Resuscitation
No full text
The aim of the study was to investigate the effects of hypothermia on S100B and glial fibrillary acidic protein (GFAP) in serum and hippocampus CA1 area in asphyxiated rats after cardiopulmonary resuscitation (CPR). A total of 100 SD rats were designated into four groups: group A, sham operation group; group B, rats received conventional resuscitation; group C, rats received conventional resuscitation and hypothermia at cardiac arrest; group D, rats received conventional resuscitation and hypothermia at 30 min after restoration of spontaneous circulation (ROSC). Rats were then killed by cardiac arrest at 2 and 4 h after ROSC; brain tissue was taken to observe dynamic changes of S100B and GFAP in serum and hippocampus CA1 area. Following ROSC, S100B levels increased from 2 to 4 h in group B, C, and D. In addition, S100B in serum and hippocampus CA1 area was all significantly increased at different time points compared with group A (P < 0.05). Following ROSC, serum S100B level at 2 h in group C was significantly decreased compared with group B, but the difference was not statistically significant (P > 0.05). Moreover, S100B in serum at 4 h after ROSC was significantly decreased (P < 0.05), S100B in cortex was significantly decreased (P < 0.05). The expression of GFAP was also examined. GFAP level in hippocampus CA1 area was significantly decreased in group B, C, and D at 4 h after ROSC compared with group A (P < 0.05). S100B and GFAP were expressed in rat serum and hippocampus CA2 area at early stage after ROSC, which can be used as sensitive markers for brain injury diagnosis and prognosis prediction. Hypothermia is also shown to reduce brain injury after CPR.</p
Emerg Infect Dis
No full textIn a large-scale survey of 9,526 parents in China, we investigated antimicrobial drug use for common childhood infections. Of children with self-limiting conditions, formal care was sought for 69.2%; of those, 53.4% received drug prescriptions, including 11.2% from parental demands. Where drugs were taken without prescriptions, 70% were from community pharmacies
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