子宫腺肌病是妇科常见的良性疾病,多见于30~50岁。随着对子宫腺肌病研究的不断深入,子宫腺肌病恶变(endometrial cancer arising in adenomyosis,EC-AIA)受到重视。EC-AIA患病率低,多为病例报道,但EC-AIA仍是威胁女性健康的临床问题,重...子宫腺肌病是妇科常见的良性疾病,多见于30~50岁。随着对子宫腺肌病研究的不断深入,子宫腺肌病恶变(endometrial cancer arising in adenomyosis,EC-AIA)受到重视。EC-AIA患病率低,多为病例报道,但EC-AIA仍是威胁女性健康的临床问题,重要的是EC-AIA没有特异性症状和有效辅助检查手段,临床诊断困难,不易早期发现且容易漏诊、误诊和延迟诊断,需要不断总结再认识。展开更多
This paper considers a multi-antenna ac-cess point(AP)transmitting secrecy message to a single-antenna user in the presence of a single-antenna illegal eavesdropper(Eve)and proposes a double ac-tive reconfigurable int...This paper considers a multi-antenna ac-cess point(AP)transmitting secrecy message to a single-antenna user in the presence of a single-antenna illegal eavesdropper(Eve)and proposes a double ac-tive reconfigurable intelligent surfaces(DARISs)as-sisted physical layer security(PLS)scheme denoted by DARISs-PLS to protect the secrecy message trans-mission.We formulate a secrecy rate maximization problem for the proposed DARISs-PLS scheme by considering a power budget constraint for the two ac-tive reconfigurable intelligent surfaces(ARISs)and AP.To address the formulated optimization problem,we jointly optimize the reflecting coefficients for the two ARISs and the beamforming at the AP in an it-erative manner by applying Dinkelbach based alter-nating optimization(AO)algorithm and a customized iterative algorithm together with the semidefinite re-laxation(SDR).Numerical results reveal that the pro-posed DARISs-PLS scheme outperforms the dou-ble passive reconfigurable intelligent surfaces-assisted PLS method(DPRISs-PLS)and single ARIS-assisted PLS method(SARIS-PLS)in terms of the secrecy rate.展开更多
This paper explores a UAV-mounted active Reconfigurable Intelligent Surface(aRIS)network designed to enhance secure downlink communication for multiple users while mitigating the impact of multiple Eavesdroppers(EVs)....This paper explores a UAV-mounted active Reconfigurable Intelligent Surface(aRIS)network designed to enhance secure downlink communication for multiple users while mitigating the impact of multiple Eavesdroppers(EVs).The focus is on optimizing the UAV’s trajectory,the Base Station’s(BS)transmit beamforming,and the power-Amplified Programmable Reflecting Elements(APREs)of the aRIS to maximize the minimum secrecy rate in the presence of EVs.This is a complex non-convex problem due to multiple optimization variables,high-dimensional matrix operations,and log-determinant objective functions,which makes it challenging to solve.Hence,a Successive Convex Approximation(SCA)-based optimization strategy is developed to efficiently solve the subproblems related to the UAV’s trajectory,aRIS’s APREs,and BS’s beamforming.By leveraging slack variables and approximation techniques,we solve the nonconvex subproblems by a sequence of convex subproblems.Simulation results demonstrate that the proposed UAV-aRIS network significantly outperforms its passive RIS counterpart in improving communication security,highlighting the effectiveness of the optimization strategy.展开更多
In this paper,we examine an illegal wireless communication network consisting of an illegal user receiving illegal signals from an illegal station and propose an active reconfigurable intelligent surface(ARIS)-assiste...In this paper,we examine an illegal wireless communication network consisting of an illegal user receiving illegal signals from an illegal station and propose an active reconfigurable intelligent surface(ARIS)-assisted multi-antenna jamming(MAJ)scheme denoted by ARIS-MAJ to interfere with the illegal signal transmission.In order to strike a balance between the jamming performance and the energy consumption,we consider a so-called jamming energy efficiency(JEE)which is defined as the ratio of achievable rate reduced by the jamming system to the corresponding power consumption.We formulate an optimization problem to maximize the JEE for the proposed ARIS-MAJ scheme by jointly optimizing the jammer’s beamforming vector and ARIS’s reflecting coefficients under the constraint that the jamming power received at the illegal user is lower than the illegal user’s detection threshold.To address the non-convex optimization problem,we propose the Dinkelbach-based alternating optimization(AO)algorithm by applying the semidefinite relaxation(SDR)algorithm with Gaussian randomization method.Numerical results validate that the proposed ARIS-MAJ scheme outperforms the passive reconfigurable intelligent surface(PRIS)-assisted multi-antenna jamming(PRIS-MAJ)scheme and the conventional multiantenna jamming scheme without RIS(NRIS-MAJ)in terms of the JEE.展开更多
Objective： To observe the clinical efficacy of acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ for prevention and treatment of seasonal allergic rhinitis.Methods： Sixty...Objective： To observe the clinical efficacy of acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ for prevention and treatment of seasonal allergic rhinitis.Methods： Sixty included patients were divided into two groups according to the random number table method with 30 patients in each group. In acupuncture group, warming-needle moxibustion was carried out at Zúsānlǐ（足三里ST 36）, and cone moxibustion on Fùzǐ（附子Radix Aconiti Lateralis Praeparata） cake was conducted at Guānyuán（关元CV 4）, Qìhǎi（气海CV 6） and Dàzhuī（大椎GV 14）. The treatment was conducted in May or June（2 months before the onset of rhinitis in this area）. The treatment was carried out for once every other day and three times per week. Treatment for 24 times was considered as 1 course of treatment. No intervention treatment was conducted in control group. The score of rhinitis symptom, the visual analogue scale（VAS） score changes of total nasal symptom score（TNSS） and total non-nasal symptom score（TNNSS） of patients in 2015 and in 2016 were observed, and the clinical efficacy of the two groups was compared.Results：（1） The score of rhinitis symptom, the VAS score changes of TNSS and TNNSS in acupuncture group in 2016 declined when compared with the results in 2015, which were 4.57 ±0.82 vs 9.40 ± 1.89,13.37 ± 4.01 vs 30.80 ±4.77 and 15.93 ±6.30 vs 46.13 ± 9.79（P〈 0.001）, the results in acupuncture group after treatment were lower than that in control group at same time, which were 4.57 ±0.82 vs 7.53 ±2.06,13.37±4.01 vs 27.17±6.84,15.93±6.30 vs 35.53±11.69（all P〈0.001）. According to comparison, there was no obvious difference in the results in control group at the two time points, which were 8.60 ±2.39 vs7.53 ± 2.06, 29.63 ± 6.30 vs 27.17 ± 6.84 and 40.90 ±12.31 vs 35.53± 11.69（all P〉 0.05）.（2） The total effective rate was 96.7%（29/30） in acupuncture group and 10%（3/30） in control group, and the difference was statistically significant（P〈 0.001）.Conclusion： Acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ was effective on prevention and treatment of seasonal allergic rhinitis.展开更多
文摘子宫腺肌病是妇科常见的良性疾病,多见于30~50岁。随着对子宫腺肌病研究的不断深入,子宫腺肌病恶变(endometrial cancer arising in adenomyosis,EC-AIA)受到重视。EC-AIA患病率低,多为病例报道,但EC-AIA仍是威胁女性健康的临床问题,重要的是EC-AIA没有特异性症状和有效辅助检查手段,临床诊断困难,不易早期发现且容易漏诊、误诊和延迟诊断,需要不断总结再认识。
基金supported in part by the National Natural Science Foundation of China under Grant 62071253,Grant 62371252 and Grant 62271268in part by the Jiangsu Provincial Key Research and Development Program under Grant BE2022800in part by the Jiangsu Provincial 333 Talent Project.
文摘This paper considers a multi-antenna ac-cess point(AP)transmitting secrecy message to a single-antenna user in the presence of a single-antenna illegal eavesdropper(Eve)and proposes a double ac-tive reconfigurable intelligent surfaces(DARISs)as-sisted physical layer security(PLS)scheme denoted by DARISs-PLS to protect the secrecy message trans-mission.We formulate a secrecy rate maximization problem for the proposed DARISs-PLS scheme by considering a power budget constraint for the two ac-tive reconfigurable intelligent surfaces(ARISs)and AP.To address the formulated optimization problem,we jointly optimize the reflecting coefficients for the two ARISs and the beamforming at the AP in an it-erative manner by applying Dinkelbach based alter-nating optimization(AO)algorithm and a customized iterative algorithm together with the semidefinite re-laxation(SDR).Numerical results reveal that the pro-posed DARISs-PLS scheme outperforms the dou-ble passive reconfigurable intelligent surfaces-assisted PLS method(DPRISs-PLS)and single ARIS-assisted PLS method(SARIS-PLS)in terms of the secrecy rate.
基金co-supported by Technology Key Project of Guangdong Province,China(No.HZJBGS-2021001)the Shanghai Sailing Scholar,China(No.23YF1412700)+1 种基金the National Natural Science Foundation of China(No.61901254)the Shanghai Technical Service Computing Center of Science and Engineering,Shanghai University,China.
文摘This paper explores a UAV-mounted active Reconfigurable Intelligent Surface(aRIS)network designed to enhance secure downlink communication for multiple users while mitigating the impact of multiple Eavesdroppers(EVs).The focus is on optimizing the UAV’s trajectory,the Base Station’s(BS)transmit beamforming,and the power-Amplified Programmable Reflecting Elements(APREs)of the aRIS to maximize the minimum secrecy rate in the presence of EVs.This is a complex non-convex problem due to multiple optimization variables,high-dimensional matrix operations,and log-determinant objective functions,which makes it challenging to solve.Hence,a Successive Convex Approximation(SCA)-based optimization strategy is developed to efficiently solve the subproblems related to the UAV’s trajectory,aRIS’s APREs,and BS’s beamforming.By leveraging slack variables and approximation techniques,we solve the nonconvex subproblems by a sequence of convex subproblems.Simulation results demonstrate that the proposed UAV-aRIS network significantly outperforms its passive RIS counterpart in improving communication security,highlighting the effectiveness of the optimization strategy.
基金supported in part by the National Natural Science Foundation of China under Grant 62071253,Grant 62371252 and Grant 62271268in part by the Jiangsu Provincial Key Research and Development Program under Grant BE2022800in part by the Jiangsu Provincial 333 Talent Project.
文摘In this paper,we examine an illegal wireless communication network consisting of an illegal user receiving illegal signals from an illegal station and propose an active reconfigurable intelligent surface(ARIS)-assisted multi-antenna jamming(MAJ)scheme denoted by ARIS-MAJ to interfere with the illegal signal transmission.In order to strike a balance between the jamming performance and the energy consumption,we consider a so-called jamming energy efficiency(JEE)which is defined as the ratio of achievable rate reduced by the jamming system to the corresponding power consumption.We formulate an optimization problem to maximize the JEE for the proposed ARIS-MAJ scheme by jointly optimizing the jammer’s beamforming vector and ARIS’s reflecting coefficients under the constraint that the jamming power received at the illegal user is lower than the illegal user’s detection threshold.To address the non-convex optimization problem,we propose the Dinkelbach-based alternating optimization(AO)algorithm by applying the semidefinite relaxation(SDR)algorithm with Gaussian randomization method.Numerical results validate that the proposed ARIS-MAJ scheme outperforms the passive reconfigurable intelligent surface(PRIS)-assisted multi-antenna jamming(PRIS-MAJ)scheme and the conventional multiantenna jamming scheme without RIS(NRIS-MAJ)in terms of the JEE.
基金Supported by Baotou Medical Science and Technology Project:Wsjj2015060~~
文摘Objective： To observe the clinical efficacy of acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ for prevention and treatment of seasonal allergic rhinitis.Methods： Sixty included patients were divided into two groups according to the random number table method with 30 patients in each group. In acupuncture group, warming-needle moxibustion was carried out at Zúsānlǐ（足三里ST 36）, and cone moxibustion on Fùzǐ（附子Radix Aconiti Lateralis Praeparata） cake was conducted at Guānyuán（关元CV 4）, Qìhǎi（气海CV 6） and Dàzhuī（大椎GV 14）. The treatment was conducted in May or June（2 months before the onset of rhinitis in this area）. The treatment was carried out for once every other day and three times per week. Treatment for 24 times was considered as 1 course of treatment. No intervention treatment was conducted in control group. The score of rhinitis symptom, the visual analogue scale（VAS） score changes of total nasal symptom score（TNSS） and total non-nasal symptom score（TNNSS） of patients in 2015 and in 2016 were observed, and the clinical efficacy of the two groups was compared.Results：（1） The score of rhinitis symptom, the VAS score changes of TNSS and TNNSS in acupuncture group in 2016 declined when compared with the results in 2015, which were 4.57 ±0.82 vs 9.40 ± 1.89,13.37 ± 4.01 vs 30.80 ±4.77 and 15.93 ±6.30 vs 46.13 ± 9.79（P〈 0.001）, the results in acupuncture group after treatment were lower than that in control group at same time, which were 4.57 ±0.82 vs 7.53 ±2.06,13.37±4.01 vs 27.17±6.84,15.93±6.30 vs 35.53±11.69（all P〈0.001）. According to comparison, there was no obvious difference in the results in control group at the two time points, which were 8.60 ±2.39 vs7.53 ± 2.06, 29.63 ± 6.30 vs 27.17 ± 6.84 and 40.90 ±12.31 vs 35.53± 11.69（all P〉 0.05）.（2） The total effective rate was 96.7%（29/30） in acupuncture group and 10%（3/30） in control group, and the difference was statistically significant（P〈 0.001）.Conclusion： Acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ was effective on prevention and treatment of seasonal allergic rhinitis.
