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Empathizing with Emotional Robot Based on Cognition Reappraisal

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China Communications 2017年第9期14卷 100-113页

作者： xin Liu Lun xie Zhiliang Wang School of Computer and Communication Engineering University of Science and Technology Beijing

This paper proposes a continuous cognitive emotional regulation model for robot in the case of external emotional stimulus from interactive person's expressions. It integrates a guiding cognitive reappraisal strategy into the HMM(Hidden Markov Model) emotional interactive model for empathizing between robot and person. The emotion is considered as a source in the 3D space(Arousal, Valence, and Stance). State transition and emotion intensity can be quantitatively analyzed in the continuous space. This cognition-emotion interactive model have been verified by the expression and behavior robot. Empathizing is the main distinguishing feature of our work, and it is realized by the emotional regulation which operated in a continuous 3D emotional space enabling a wide range of intermediate emotions. The experiment results provide evidence with acceptability, accuracy, richness, fluency, interestingness, friendliness and exaggeration that the robot with cognition and emotional control ability could be better accepted in the human-robot interaction(HRI).

关键词： emotional robot human-robot in-teraction guiding cognitive reappraisal emo-tional regulation active field emotion space

Stable Propagating Waves and Wake Fields in Relativistic Electromagnetic Plasma

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Communications in Theoretical Physics 2008年第3期49卷 753-758页

作者： xie Bai-Song YIN xin-Tao The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education Beijing Normal University Beijing 100875 China

Stable propagating waves and wake fields in relativistic electromagnetic plasma are investigated. The incident electromagnetic field has a finite initial constant amplitude meanwhile the longitudinal momentum of electrons is taken into account in the problem. It is found that in the moving frame with transverse wave group velocity the stable propagating transverse electromagnetic waves and longitudinal plasma wake fields can exist in the appropriate regime of plasma.

关键词： nonlinear wave propagation laser-plasma interactions

Tunable band structure and effective mass of disordered chalcopyrite

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Frontiers of physics 2017年第1期12卷 51-56页

作者： Ze-lian Wang Wen-Hui xie Yong-Hong Zhao College of Physics and Electronic Engineering Institute of Solid State Physics Sichuan Normal University Chengdu 610068 China Department of Physics East China Normal University Shanghai 200062 China

The band structure and effective mass of disordered chalcopyrite photovoltaic materials Cul-xAgxGaX2 （X = S, Se） are investigated by density functional theory. Special quasirandom structures are used to mimic local atomic disorders at Cu/Ag sites. A local density plus correction method is adopted to obtain correct semiconductor band gaps for all compounds. The bandgap anomaly can be seen for both sulfides and selenides, where the gap values of Ag compounds are larger than those of Cu compounds. Band gaps can be modulated from 1.63 to 1.78 eV for CU1-xAgxGaSe2, and from 2.33 to 2.64 eV for Cu1-xAgxGaS2. The band gap minima and maxima occur at around x = 0.5 and x = 1, respectively, for both sulfides and selenides. In order to show the transport properties of Cu1-xAgxGaX2, the effective mass is shown as a function of disordered Ag concentration. Finally, detailed band structures are shown to clarify the phonon momentum needed by the fundamental indirect-gap transitions. These results should be helpful in designing high-efficiency photovoltaic devices, with both better absorption and high mobility, by Ag-doping in CuGaX2.

关键词： disorder electronic structure effective mass

TMAHS:a truthful multi-unit double auction framework for heterogeneous spectrum in secondary market

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The Journal of China Universities of Posts and Telecommunications 2019年第1期26卷 82-94页

作者： Li xin xie Gang Gao Jinchun School of Electrical Engineering Beijing University of Posts and Telecommunications Beijing Key Laboratory of Work Safety Intelligent Monitoring Beijing University of Posts and Telecommunications School of information and Communication Engineering Beijing University of Posts and Telecommunications

Auction was widely used to tackle spectrum allocation and sharing in the secondary market under the condition of spectrum scarcity. In real communication system, such as broadband communication, the utilization of spectrum resource is various because of different requirements and complex application scenarios. So, these schemes cannot be directly applied to the above wireless communication system. To solve this problem, a new model where sellers/buyers can sell/buy multi-unit for heterogeneous spectrum was proposed and a truthful multi-unit double auction framework was designed for heterogeneous spectrum trading. A valuation function is first applied to represent the buyer's true valuation of the sub-band and reflect the buyer's satisfaction degree and a novel concept termed ‘virtual player' was introduced. Then the buyer group was constructed based on the conflict graph to reuse the same spectrum among interference-free buyers in both spatial and temporal domains. The winner determination strategy and algorithm of clearing price were designed elaborately. According to the theoretical analysis, the scheme can satisfy three critical economic properties: truthfulness, individual rationality, and budget balance. Finally, simulation results show that the proposed scheme can achieve better user satisfaction, auction efficiency and spectrum reuse rate for the real communication system. The proposed auction framework is practical and effective.

关键词： spectrum auction double auction spectrum reuse heterogeneous spectrum multi-unit valuation function

Slag formation path during dephosphorization process in a converter

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International Journal of Minerals,Metallurgy and Materials 2015年第12期22卷 1260-1265页

作者： Jiang Diao Yong Qiao Xuan Liu xie Zhang xin Qiu Bing xie College of Materials Science and Engineering Chongqing University

The slag formation path is important for efficient dephosphorization in steelmaking processes. The phosphorus capacity and the melting properties of the slag are critical parameters for optimizing the slag formation path. Regarding these two factors, the phosphorus partition ratio was calculated using the regular solution model （RSM）, whereas the liquidus diagrams of the slag systems were estimated using the FactSage thermodynamic package. A slag formation path that satisfies the different requirements of dephosphorization at different stages of dephosphorization in a converter was thus established through a combination of these two aspects. The composition of the initial slag was considered to be approximately 15wt%CaO-44wt% SiOz-41wt%FeO. During the dephosphorization process, a slag formation path that follows a high-iron route would facilitate efficient dephosphorization. The composition of the final dephosphorization slag should be approximately 53wt%***% SiO2-21.5wt%FeO. The composition of the final solid slag after dephosphorization is approximately 63.6wt%CaO-30.3wt%SiO2-6. 1wt%FeO.

关键词： steelmaking dephosphorization slag composition optimization

Association of tumor differentiation and prognosis in patients with rectal cancer undergoing neoadjuvant chemoradiation therapy

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Gastroenterology Report 2019年第4期7卷 283-290,I0002页

作者： Qunsheng Huang Huabo Qin Jian Xiao Xiaosheng He Minghao xie xin He Qiuqiong Yao Ping Lan Lei lian Department of Colorectal Surgery The Sixth Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong 510655P.R.China Guangdong Institute of Gastroenterology Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor DiseasesThe Sixth Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong 510655P.R.China Department of General and Pediatric Surgery The People’s Hospital of Guangxi Zhuang Autonomous RegionNanning 530000P.R.China Department of Medical Oncology The Sixth Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong 510655P.R.China Department of General Surgery The Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi 332000P.R.China Department of Laboratory Medicine Zhujiang HospitalSouthern Medical UniversityGuangzhou CityGuangdong 515600P.R.China

Background and objective:Neoadjuvant chemoradiation therapy(NCRT)followed by radical resection has been a common practice for patients with locally advanced rectal *** study aimed to analyse the association of tumor differentiation and prognosis in rectal-cancer patients undergoing ***:Patients with locally advanced,non-mucinous rectal cancer who underwent NCRT followed by radical resection between 2007 and 2017 were identified from an electronic health record system at the Sixth Affiliated Hospital of Sun Yatsen University(Guangzhou,China).Multivariable logistic regression and multivariate Cox regression were performed to analyse the association of response to NCRT and survival with clinicopathological characteristics of all these ***:We identified 325 patients(241 males and 84 females;mean age,54.4611.2 years)who underwent NCRT followed by radical resection,including 26(8.0%)with poorly-differentiated rectal cancer,182(56.0%)with moderately-differentiated cancer and 117(36.0%)with well differentiated *** score matching analysis and multivariable logistic regression analysis results showed that tumor differentiation was significantly associated with response to *** the poor differentiation and non-poor differentiation groups,the 3-year overall survival(OS)rates were 74.6 and 93.5%,respectively,whereas the 3-year local recurrence rates were 18.6 and 3.7%,*** Cox regression analyses revealed that poor differentiation was an independent risk factor for local recurrence and ***:Among the patients with locally advanced,non-mucinous rectal cancer,the patients with poorlydifferentiated cancer who underwent NCRT had a worse response to NCRT and poorer prognosis than those with moderately-and well-differentiated diseases.

关键词： Rectal cancer neoadjuvant chemoradiation therapy prognosis

Influence of Secondary Sealing Flow on Performance of Turbine Axial Rim Seals

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Journal of Thermal Science 2020年第3期29卷 840-851页

作者： WANG Ruonan DU Qiang LIU Guang lian Zengyan xie Lei ZHU Junqiang Key Lab of Light-duty Gas-turbine Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Purge flow is of great importance in cooling turbine disks and sealing rotor-stator disc cavity to reduce hot gas ingestion in gas *** amount of cooling air extracted from the compressor is crucial to engine *** sealing air will cause not only a reduction in work transfer but also an increase in aerodynamic losses caused by the mixing of main and sealing *** order to simplify rim seal structure while ensuring high sealing efficiency,the current paper optimizes the flow path of the secondary air system and presents a new rim seal structure with auxiliary sealing holes transporting a certain amount of secondary sealing *** new structure was compared with the conventional counterpart using validated CFD methods,showing that the additional secondary sealing flow is possible to improve sealing efficiency in disk *** current paper investigates the secondary sealing flow with and without swirl(the angle of auxiliary sealing hole inclination is 0°and 45°respectively),while maintaining the total amount of the sealing flow,flowrate ratio of sealing air(main sealing flow rate versus secondary sealing flow rate=1:1,2:1,3:1,4:1),found that both two parameters have essential impacts on sealing *** relationship between these two parameters and sealing efficiency was obtained,and it provides a new philosophy for the design of rim seal in gas turbines.

关键词： rim seal sealing efficiency secondary sealing flow sealing flowrate ratio swirled flow

Experimental and numerical flutter analysis of a folding fin with multiple asymmetric free-plays

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Chinese Journal of Aeronautics 2024年第5期37卷 332-348页

作者： Chenyu LIU Chao AN Changchuan xie xin ZHANG Lan YANG School of Aeronautic Science and Engineering Beihang UniversityBeijing 100191China Beijing Institute of Electronic System Engineering Beijing 100854China Beijing Institute of Astronautical Systems Engineering Beijing 100076China

Experimental folding fin models with an adjustable free-play are tested in a wind *** fin structure is modeled using the free-interface component mode synthesis method,and its free-play is modeled as four independent nonlinear springs with asymmetric stiffness.A nonplanar unsteady vortex-lattice method considering compressibility is employed to address nonlinear deformation and high subsonic *** spline interpolation is improved through projection and *** aeroelastic characteristics of folding fins with different free-play magnitudes,initial conditions and elastic-axis positions are analyzed using an established time-marching method because of its relatively small computation scale and high *** results show good consistency among the presented method,the wind tunnel test and the harmonic balance *** is a negative correlation between the critical speed of divergent motion and the ratio of the initial condition to the free-play *** either the free-play magnitude or the initial condition is extreme(tiny or vast),the system nonlinearity degenerates to ***,the flutter prevention design of a linear model can be applied to a nonlinear model,such as moving the elastic-axis position *** presented fin configuration exhibits an unstable limit cycle oscillation because the orders of coupled flutter modes do not change with variations in equivalent linear stiffness.

关键词： Free-play Limit cycle oscillation Flutter Component mode synthesis Vortex-lattice method

Dynamic recrystallization behavior and microstructure evolution of high-performance Cu-3.28Ni-0.6Si-0.22Zn-O.11Cr-0.04P during hot compression

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Rare Metals 2021年第1期40卷 156-167页

作者： Chang-Sheng Wang Hua-Dong Fu Jian-xin xie Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Institute for Advanced Materials and TechnologyBeijing 100083China

By means of isothermal compression at temperatures in the range of 650-900℃and strain rates in the range of 0.001-1 s^(-1),the dynamic recrystallization behavior and microstructural evolution of a Cu-3.28 Ni-0.6 Si-0.22 Zn-0.11 Cr-0.04 P(wt%)alloy designed by a machine learning method were investigated.A semiempirical constitutive equation,processing maps and an average activation energy were *** microstructure under different conditions and the effect of strain rate on the texture of the alloy at 800-900℃were *** results show that the suitable temperature is800-900℃;when the strain is less than 0.4,the appropriate strain rate is 0.01-0.5 s^(-1);and when the strain is greater than 0.4,the appropriate strain rate is below0.05 s^(-1).After deformation at 800℃,the main texture changed from{112}of copper to a uniform distribution with the increase in strain rate,but the sample did not have obvious texture after deformation at 850 and900℃.The above results can provide a reference for the selection of process parameters.

关键词： High-performance copper alloy Hot compression Dynamic recrystallization Processing map Texture evolution