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11 results on '"Zhang, Xiuning"'

4. Local 5-HT signaling bi-directionally regulates the coincidence time window for associative learning

Author

Zeng, Jianzhi, primary, Li, Xuelin, additional, Zhang, Renzimo, additional, Lv, Mingyue, additional, Wang, Yipan, additional, Tan, Ke, additional, Xia, Xiju, additional, Wan, Jinxia, additional, Jing, Miao, additional, Zhang, Xiuning, additional, Li, Yu, additional, Yang, Yang, additional, Wang, Liang, additional, Chu, Jun, additional, Li, Yan, additional, and Li, Yulong, additional

Published
2023
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9. Power consumption optimization of downlink Macro-Femto Heterogeneous Networks based on cross-layer design

Author

Tao Cheng, Tan Zhen-hui, Xu Shaoyi, Zhang Xiuning, and Zhang Jin-bao

Subjects
Mathematical optimization, Computer Networks and Communications, Computer science, business.industry, Quality of service, Physical layer, Network layer, Round-robin scheduling, Convex optimization, Femtocell, Electrical and Electronic Engineering, business, Throughput (business), Heterogeneous network, Computer network
Abstract

Based on the cross-layer design, the power-optimization problem of Macro-Femto Heterogeneous Networks (HetNets) has been formulated. The constraints of power and resource block allocation in the physical layer, delay and target data rate in the medium access control layer, urgent queue length in the network layer, and packet error rate in the transport layer, have been considered. The original problem is non-deterministic polynomial time hard, which cannot be solved practically. After the restrictions of upper layers are translated into constraints with physical layer parameters, and the integer restrictions are relaxed, the original problem can be decomposed into convex optimization subproblems. The optimal solutions of resource block allocation and power allocation can be obtained by using the Lagrangian optimization. Simulation results show that the proposed scheme is better than both the round robin algorithm and the max-min one in terms of energy efficiency, throughput and service fairness. The round robin algorithm and the max-min one only focus on the user fairness rather than quality of service fairness. Compared to the round robin scheme (the max-min one), the proposed scheme improves the energy efficiency 58.85% (62.41%), the throughput 19.09% (25.25%), the service fairness 57.69% (35.48%).

Published
2013

11. [Effect of ulinastatin on postoperative cognitive function in the elderly with fracture].

Author

Shan X, Zhang X, Li X, Xu G, and Li Z

Subjects
Aged, Glycoproteins, Humans, Trypsin Inhibitors, Cognition, Postoperative Period
Abstract

Objective: To observe the vary of postoperation cognitive function and inflammatory mediators CRP in elderly patients with fracture after using ulinastatin., Methods: Forty-eight patients over 65 years old patients with hip fracture were randomly divided into two groups: ulinastatin group (n = 21) and control group (n = 27). All patients underwent combined spinal-epidural anesthesia. The patients in ulinastatin group received intravenous injection of ulinastatin with a dose of 5 000 U/kg before skin incision and at the moment of the end of operation. Cognitive function was assessed by Mini-Mental State Examination (MMSE) at the day of the operation (T₀), 1 (T₁), 3 (T₂) and 7 (T₃) days after opreation. The incidence of POCD was calculated. Blood samples were taken at the day of the operation and 3 days after operation for determination of CRP., Results: Compared with control group (23.8 ± 0.8, 24.3 ± 0.7), the MMSE scores were significantly increased at T₁, T₂in ulinastatin group (26.0 ± 0.7, 26.6 ± 0.6) (t₁= 2.161, t₂= 2.431, P < 0.05). There were no differences at T₀0, T₃(t₀ = 0.472, t₃ = 1.585, P > 0.05). The respectively incidence of POCD of ulinastatin group and control group were 40.7% and 4.8%, and that of ulinastatin group was significantly lower than control group (χ² = 8.155, P < 0.01). Serum CRP concentration of ulinastatin group after operation was (64.46 ± 9.86) mg/L, significantly lower than control group (123.63 ± 7.17) mg/L (t = -4.974, P < 0.05)., Conclusion: Ulinastatin can reduce the incidence of POCD in the elderly patients with fracture, which may be related to the anti-inflammatory effect of ulinastatin.

Published
2015

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