检索结果-南通市图书馆

Statistics of states generated by quantum-scissors device

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第3期28卷 103-108页

作者： ming-hao wang Guo-An Yan State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China School of Physics and Technology Wuhan UniversityWuhan 430072China

Generating desired states is a prerequisite in quantum information. Some desired states can be generated by a quantum-scissors device(QSD). We present a detailed analysis of the properties of the generated states, including average photon numbers and intensity gains. The theoretical analysis shows that there is a nondeterministic amplification in terms of the average photon number under the condition that the average photon number of the input state is less than 1. In contrast to the input states, the generated states show the nonclassical property described by the negativity of the Wigner function. Furthermore, we generalize the QSD to truncate arbitrary photon number terms of the input states, which may be useful in high-dimensional quantum information processing.

关键词： quantum state generation nondeterministic amplification nonclassical property generalized quantum-scissors

Correction: c-Myc-drivenn glycolysis polarizes functional regulatory B cells that trigger pathogenic inflammatory responses

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第4期9卷 1777-1777页

作者： Xu-Yan wang Yuan Wei Bo Hu Yuan Liao Xiaodong wang Wen-Hua Wan Chun-Xiang Huang Mahepali Mal Jing-Rui Qu Xiao-Dan Chen Dong-Ping Chen Dong-ming Kuang Xue-hao wang Yun Chen 不详

Correction to:Signal Transduction and Targeted Therapy https:/l ***/10.1038/s41392-022-00948-6,publishedonline18 April2022 In the process of collating the raw data,the authors noticed an inadvertent error occurred in ... 详细信息

关键词： noticed corrected polar

A Position and Torque Switching Control Method for Robot Collision Safety

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2018年第2期15卷 156-168页

作者： Zhi-Jing Li Hai-Bin Wu Jian-ming Yang ming-hao wang Jin-Hua Ye School of Mechanical Engineering and Automation Fuzhou University Department of Mechanical System Meijo University

With the increasing number of human-robot interaction applications, robot control characteristics and their effects on safety as well as performance should be taken account into the robot control system. In this paper, a position and torque switching con- trol method was proposed to improve the robot safety and performance, when robots and humans work in the same space. The switch- ing control method includes two modes, the position control mode using a proportion-integral （PI） algorithm, and the torque control mode using sliding mode control （SMC） algorithm for eliminating swing. Under the normal condition, the robot works in position con- trol mode for trajectory tracking with quick response. Once the robot and human collide, the robot will switch to torque control mode immediately, and the impact force will be restricted within a safe range. When the robot and human detach, the robot will resume to po- sition control mode automatically. Moreover, for a better performance, the joint torque is detected fl＇om direct-current （DC） motor＇s cur- rent rather than the torque sensor. The experiment results show that the proposed approach is effective and feasible.

关键词： Human-robot interaction position control torque control switching control robot collision safety.

The safety of radium-223 combined with new-generation hormonal agents in bone metastatic castration-resistant prostate cancer: a systematic review and network meta-analysis

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2023年第4期25卷 441-447页

作者： ming-hao wang Jin-Dong Dai Xing-ming Zhang Jin-Ge Zhao Guang-Xi Sun Yu-hao Zeng Hong Zeng Nan-Wei Xu hao Zeng Peng-Fei Shen Department of Urology West China Hospital of Sichuan UniversityChengdu 610041China

Patients with bone metastatic castration-resistant prostate cancer (mCRPC) might benefit from radium-223 (^(223)Ra) combined withnew-generation hormonal agents (NHAs) in terms of survival and quality of life (QoL). However, the safety of combination therapiesremains unclear. Therefore, we aimed to perform a network meta-analysis by reviewing the literature about the combination of^(223)Ra with abiraterone acetate plus prednisone (AAP) or enzalutamide and to evaluate the safety of combination therapy in bonemCRPC patients. Ultimately, ten studies (2835 patients) were selected, including four randomized controlled trials (RCTs), fiveretrospective cohort studies, and one single-arm study. Overall, there was no difference in the incidence of fracture between the^(223)Ra+NHA combination group and the ^(223)Ra monotherapy group (odds ratio [OR]: 1.46, 95% confidence interval [CI]: 0.91–2.34,P = 0.66), but the incidences in both the ^(223)Ra+NHA combination group (OR: 3.22, 95% CI: 2.24–4.63, P < 0.01) and the ^(223)Ramonotherapy group (OR: 2.24, 95% CI: 1.23–4.08, P < 0.01) were higher than that in the NHA monotherapy group. However, inthe meta-analysis involving only RCTs, there was no difference between the ^(223)Ra monotherapy group and the NHA monotherapygroup (OR: 1.14, 95% CI: 0.22–5.95, P = 0.88), while the difference between the ^(223)Ra+NHA combination group and the NHAmonotherapy group remained significant (OR: 3.22, 95% CI: 2.24–4.63, P < 0.01). Symptomatic skeletal events (SSEs), SSE-freesurvival (SSE-FS), all grades of common adverse events (AEs), and ≥grade 3 AEs among all groups did not show any significantdifference. Our results indicate that the combination of ^(223)Ra with NHAs was well tolerated in bone mCRPC patients compared to ^(223)Ra monotherapy, even though the incidence of fracture was higher in patients who received ^(223)Ra than that among those whoreceived NHA monotherapy. More evidence is needed to explore the safety and efficiency of ^(223)R

关键词： meta-analysis metastatic castration-resistant prostate cancer new-generation hormonal agents radium-223 safety

Planning of DC Electric Spring with Particle Swarm Optimization and Elitist Non-dominated Sorting Genetic Algorithm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2024年第2期10卷 574-583页

作者： Qingsong wang Siwei Li hao Ding ming Cheng Giuseppe Buja School of Electrical Engineering and Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment Southeast UniversityNanjing 210096China School of Software Engineering Southeast universitySuzhou 215123China

This paper addresses the planning problem of parallel DC electric springs (DCESs). DCES, a demand-side management method, realizes automatic matching of power consumption and power generation by adjusting non-critical load (NCL) and internal storage. It can offer higher power quality to critical load (CL), reduce power imbalance and relieve pressure on energy storage systems (RESs). In this paper, a planning method for parallel DCESs is proposed to maximize stability gain, economic benefits, and penetration of RESs. The planning model is a master optimization with sub-optimization to highlight the priority of objectives. Master optimization is used to improve stability of the network, and sub-optimization aims to improve economic benefit and allowable penetration of RESs. This issue is a multivariable nonlinear mixed integer problem, requiring huge calculations by using common solvers. Therefore, particle Swarm optimization (PSO) and Elitist non-dominated sorting genetic algorithm (NSGA-II) were used to solve this model. Considering uncertainty of RESs, this paper verifies effectiveness of the proposed planning method on IEEE 33-bus system based on deterministic scenarios obtained by scenario analysis.

关键词： DC distribution network DC electric spring non-dominated sorting genetic algorithm particle swarm optimization renewable energy source

Collective Movement Simulation:Methods and Applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Machine Intelligence Research 2024年第3期21卷 452-480页

作者： Hua wang Xing-Yu Guo hao Tao ming-Liang Xu School of Computer and Artificial Intelligence Zhengzhou UniversityZhengzhou450001China Engineering Research Center of Intelligent Swarm Systems Ministry of EducationZhengzhou450001China National Supercomputing Center in Zhengzhou Zhengzhou450001China China Ship Development and Design Center Wuhan430060China

Collective movement simulations are challenging and important in many areas,including life science,mathematics,physics,information science and public *** this survey,we provide a comprehensive review of the state-of-the-art techniques for collective movement *** start with a discussion on certain concepts to help beginners understand it more ***,we analyze the intelligence among different collective objects and the emphasis in different ***,we classify existing collective movement simulation methods into four categories according to their effects,namely versatility,accuracy,dynamic adaptability,and assessment feedback ***,we introduce five applications of layout optimization,emergency control,dispatching,unmanned systems,and other derivative ***,we summarize possible future research directions.

关键词： Collective movement simulation multiple objects multiple discipline simulation effect collective intelligence

Integrating machine learning and CALPHAD method for exploring low-modulus near-β-Ti alloys

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第1期43卷 309-323页

作者： hao Zou Yue-Yan Tian Li-Gang Zhang Ren-hao Xue Zi-Xuan Deng ming-ming Lu Jian-Xin wang Li-Bin Liu School of Computer Science and Engineering Central South UniversityChangsha 410083China School of Materials Science and Engineering Central South UniversityChangsha 410083China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

Traditional theoretical and empirical calculation methods can guide the design of β-and metastable β-alloys for bio-titanium. However, it is still difficult to obtain novel near-β-Ti alloys with low modulus. This study developed a method that combines machine learning with calculation of phase diagrams(CALPHAD) to facilitate the design of near-β-Ti alloys. An elastic modulus database of Ti–Nb–Zr–Mo–Ta–Sn system was constructed first, and then three features(the electron to atom ratio, mean absolute deviation of atom mass, and mean electronegativity) were selected as the key factors of modulus by performing a three-step feature selection. With these features, a highly accurate model was built for predicting the modulus of near-β-Ti alloys. To further ensure the accuracy of modulus prediction, machine learning with the elastic constants calculated was leveraged by CALPHAD database. The root mean square error of the well-trained model can be as low as 6.75 GPa. Guided by the prediction of machine learning and CALPHAD, three novel near-β-Ti alloys with elastic modulus below 50 GPa were successfully designed in this study. The best candidate alloy(Ti–26Nb–4Zr–4Sn–1Mo–Ta) exhibits an ultra-low modulus(36.6 GPa) after cold rolling with a thickness reduction of 20%. Our method can greatly save time and resources in the development of novel Ti alloys, and experimental verifications have demonstrated the reliability of this method.

关键词： Near-β-Ti alloy Machine learning Calculation of phase diagram Low-modulus alloy Feature selection

在线全文

学校读者我要写书评

暂无评论

轴承结构对推力轴承承载特性和热特性的影响

风机技术 2024年第4期66卷 89-96页

作者：陈金利薛翔王浩明杜磊林庆国上海空间推进研究所上海空间发动机工程技术研究中心

为探究气体箔片动压推力轴承的轴承结构对轴承承载特性和热特性的影响,建立推力轴承二维仿真模型,通过耦合求解非等温可压缩气体的雷诺方程和能量方程,获得轴承气膜压力场和温度场,并建立推力轴承三维仿真模型进行验证。利用轴承二维模... 详细信息

为探究气体箔片动压推力轴承的轴承结构对轴承承载特性和热特性的影响,建立推力轴承二维仿真模型,通过耦合求解非等温可压缩气体的雷诺方程和能量方程,获得轴承气膜压力场和温度场,并建立推力轴承三维仿真模型进行验证。利用轴承二维模型研究轴承结构(包括箔片节距比、箔片数量和箔片楔形高度)对轴承承载特性和热特性的影响规律。计算结果表明:气体箔片动压推力轴承的最佳节距比为0.35~0.5,最佳箔片数量为6,当最小气膜厚度为0.01mm时,最佳的箔片楔形高度为0.04~0.06mm;轴承热耗散随节距比、楔形高度的增加而减小,随箔片数量的增加而增大,为降低轴承温度,可适当提高轴承节距比和楔形高度。

关键词：气体箔片推力轴承轴承结构承载特性热特性

维普期刊数据库博看期刊

Effect of Two Phase Mixtures on the Selection of the Discharge Path

在线全文

学校读者我要写书评

暂无评论

高电压技术 2008年第12期34卷 2681-2686页

作者： DENG He-ming HE Zheng-hao wang Lei LI Jin School of Environmental Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

This paper investigates the development,the breakdown process,and the discharge path selection of the lightning discharges in two-phase mixtures(TPMs).13 kinds of solid-gas mixtures and 3 kinds of liquid-gas mixtures are employed to study effect of two phase mixtures on the selection of the discharge path under lightning *** size effects are shown upon these experimental *** the diameter of solid or liquid grains is less than about 10 μm,the discharge path does not select TPM but *** the discharge path selects TPM when the diameter is greater than about 100 μ*** when the diameter is between about 10 μm and 100 μm,the discharge path selects TPM under negative lightning impulses,but it has a greater selection of air than TPMs under positive lightning *** fraction and permittivity of solid/liquid can also influence the selection of the discharge path.

关键词：混合两相体放电路径选择粒度效应容积率介电常数