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Chinese Physics Letters 1990年第11期7卷 522-525页

作者： teng da ZHUANG Weihua Laboratory of Superlattice and Microstructure Institute of SemiconductorsAcademia SinicaBeijing 100083

A high-energy shift of the band-band recombination has been observed tn photoluminescence spectra of the strained InP layer grown on GaAs *** InP layer is under biaxial compressive strain at temperatures below the growth temperaiure,because the thermal expansion coefficient of InP is smaller than that of GaAs,The strain value determined by the energy shift of the bandedge peak is in good agreement with the calculated thermal strain.A band to carbon acceptor recombination is also identified.

关键词： tempera thermal strained

Dissociation of J/ψin hot medium and magnetic field

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Chinese Physics C 2022年第9期46卷 232-236页

作者： da teng Xingyu Guo Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Southern Nuclear Science Computing CenterSouth China Normal UniversityGuangzhou 510006China

Charmonium dissociation is an important probe of the quark–gluon plasma medium in heavy-ion *** magnetic field produced in non-central collisions can affect the charmonia and their *** study the cc bound state in magnetic field and at finite temperature using the Schrodinger *** find that below the dissociation temperature,both the magnetic field and momentum of the charmonia affect the formation or dissociation of the bound state,forming a non-trivial structure.

关键词： Schrodinger equation magnetic field charmonium

Impact of Ownership Types on R＆D Intensity and Innovation Performance--Evidence from Transitional China

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Frontiers of Business Research in China 2017年第1期11卷 101-137页

作者： da teng Jingtao Yi Coventry Business School Coventry University Coventry CVI 5FB UK School of Business Renmin University of China Beijing 100872 China

This paper examines the effects of ownership types on firms＇ R＆D intensity and innovation performance, using a sample of 357,857 Chinese firms from 2005-2007. This study finds considerable divergence among Chinese domestic enterprises in terms of R＆D intensity and innovation performance. Firms owned by the central government are the key drivers for firms＇ R＆D activities, while local government, private and foreign ownerships are negatively related to both R＆D intensity and innovation performance. Significant divergence within government ownership category and argues that China＇s institutional changes generate varied government ownership groups with different levels of resource endowment, which in turn influence firms＇ R＆D activities.

关键词： ownership R&D intensity innovation performance institutional changes China

Learning robust features by extended generative stochastic networks

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International Journal of Modeling, Simulation, and Scientific Computing 2018年第1期9卷 135-145页

作者： da teng Xiao Song Guanghong Gong Junhua Zhou School of Automation Science and Electrical Engineering Beihang University P.R.China State Key Laboratory of Intelligent Manufacturing System Technology P.R.China

Deep neural networks have achieved state-of-the-art performance on many object recognition tasks,but they are vulnerable to small adversarial *** this paper,several extensions of generative stochastic networks(GSNs)are proposed to improve the robustness of neural networks to random noise and adversarial *** results show that compared to normal GSN method,the extensions using adversarial examples,lateral connections and feedforward networks can improve the performance of GSNs by making the models more resistant to overfitting and noise.

关键词： Machine learning deep learning neural networks adversarial examples

Boltzmann machines with clusters of stochastic binary units

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International Journal of Modeling, Simulation, and Scientific Computing 2016年第2期7卷 187-195页

作者： da teng Zhang Li Guanghong Gong Liang Han School of Automation Beihang University Beijing 100191P.R.China School of Information Yunnan University Kunming 650091P.R.China

The original restricted Boltzmann machines(RBMs)are extended by replacing the binary visible and hidden variables with clusters of binary units,and a new learning algorithm for training deep Boltzmann machine of this new variant is *** sum of binary units of each cluster is approximated by a Gaussian *** demonstrate that the proposed Boltzmann machines can achieve good performance in the MNIST handwritten digital recognition task.

关键词： Restricted Boltzmann machines machine learning unsupervised learning

Roundness measurement of cigarette based on visual information

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Advances in Manufacturing 2017年第2期5卷 177-181页

作者： Jun-Li Cao Ju-Feng Li teng-da Lu School of Mechatronic Engineering and Automation Shanghai University Shanghai 200072 People's Republic of China

Roundness is defined as the degree that the cross section of an object is close to a theoretical circle. In the cigarette production process, the quality and production efficiency of a cigarette are directly affected by the roundness of the un-cut cigarette. To improve the current measurement method using a charge-coupled device （CCD） sensor and measure the roundness of cigarettes in the production line, a visual detection system composed of an industrial camera and a structural light is developed. The system＇s roundness-calculation method is closer to the real environment of the cigarette roundness. In this visual system, the line-structure light shines on the cigarette with a fixed angle and height in a longitudinal section, forming a crescent-shaped spot when the industrial camera cannot capture the cigarette＇s end surface. Then, the spot is analyzed using image-processing techniques, such as a median filter and ellipse fitting, after the industrial camera captures the spot. The system with a non-contact measurement style can meet the requirements of on-line cigarette detection with stable results and high precision.

关键词： Roundness measurement Ellipse fitting Image processing Visual detection system

Profiling the pattern of the human T-cell receptorγδcomplementary determinant region 3 repertoire in patients with lung carcinoma via high-throughput sequencing analysis

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Cellular & Molecular Immunology 2019年第3期16卷 250-259页

作者： Hui Chen Mingjin Zou da teng Yu Hu Jianmin Zhang Wei He Department of Immunology Institute of Basic Medical SciencesChinese Academy of Medical Sciences and School of Basic MedicinePeking Union Medical CollegeState Key Laboratory of Medical Molecular BiologyBeijing 100005China Department of Clinical Laboratory Qilu Hospital of Shandong University107 Wenhua Xi RoadJinan 250012China

γδT cells function as sentinels in early host responses to infections and ***,γδT cells recognize tumor-associated stress antigens via T-cell receptor(TCR)γδand play important roles in the antitumor immune *** this study,we characterized the pattern of the human TCRγδcomplementary determinant region 3(CDR3)repertoire in patients with lung carcinoma(LC)via high-throughput *** results showed that the diversity of CDR3δwas significantly reduced,and that of CDR3γwas unchanged in LC patients compared with healthy individuals;in addition,LC patients shared significantly more CDR3δsequences with each other than healthy *** CDR3 length distribution and N-addition length distribution did not significantly differ between LC patients and healthy *** addition,the CDR3 repertoire tended to use more Vδ2 and fewer Vδ1 germline gene fragments among LC ***,we found a combination of four TCRγδrepertoire features that focus on CDR3δand can be used as a biomarker for LC *** research suggests that the TCRγδCDR3 repertoire changed in LC patients due to the antitumor immune response byγδT cells in vivo,and these changes primarily focus on the amplification of certain tumor-specific CDR3δclones among *** study demonstrates the role ofγδT cells from the TCRγδCDR3 repertoire in tumor immunity and lays the foundation for elucidating the mechanism underlying the function ofγδT cells in antitumor immunity.

关键词： CDR3δ high-throughput sequencing LC TCRγδrepertoire

Novel Kriging-Based Decomposed-Coordinated Approach for Estimating the Clearance Reliability of Assembled Structures

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Computer Modeling in Engineering & Sciences 2021年第11期129卷 1029-1049页

作者： da teng Yunwen Feng Cheng Lu Chengwei Fei Jiaqi Liu Xiaofeng Xue School of Aeronautics Northwestern Polytechnical UniversityXi’an710072China Department of Aeronautics and Astronautics Fudan UniversityShanghai200433China

Turbine blisks are assembled using blades,disks and *** can endure complex loads at a high temperature,high pressure and high *** safe operation of assembled structures depends on the reliability of each *** Carlo(MC)simulation is commonly used to analyze structural reliability,but this method needs to run thousands of *** order to assess the clearance reliability of assembled structures in an efficient and precise manner,the novel Kriging-based decomposed-coordinated(DC)(DCNK)approach is proposed by integrating the DC strategy,the Kriging model and the importance sampling-based Markov chain(MCIS)*** this method,the DC strategy is used to decompose a multi-objective problem into many single-objective *** relationships between these many single-objectives and the overall objective are then *** Kriging model is applied to establish the limit state functions of the single-objectives and multi-objective problems,while the MCIS method is used to assess the structural assembled clearance ***,a highly nonlinear complex compound function is first utilized to verify the DCNK model from a mathematical ***,the reliability of an aeroengine high-pressure turbine(HPT)blade-tip radial running clearance(BTRRC)is analyzed to validate the DCNK approach by considering thermo-structural *** analytical results show that the reliability is 0.9976 when the allowance value of the BTTRC is 1.7650×10^(−3)*** with different methodologies(including direct simulation,the classical Kriging model,and the weighted response surface method(WRSM)),the proposed method holds obvious advantages in computing time and precision,as well as simulation efficiency and *** efforts of this paper provide a useful approach to analyzing assembled clearance reliability and contribute to the development of structural reliability theory.

关键词： Kriging-based decomposed-coordinated approach assembled clearance reliability assessment importance

Phase recovery and holographic image reconstruction using deep learning in neural networks

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Light(Science & Applications) 2017年第1期6卷 192-200页

作者： Yair Rivenson Yibo Zhang Harun Günaydın da teng Aydogan Ozcan Electrical and Computer Engineering Department University of CaliforniaLos AngelesCA 90095USA Bioengineering Department University of CaliforniaLos AngelesCA 90095USA California NanoSystems Institute(CNSI) University of CaliforniaLos AngelesCA 90095USA Computer Science Department University of CaliforniaLos AngelesCA 90095USA Department of Surgery David Geffen School of MedicineUniversity of CaliforniaLos AngelesCA 90095USA

Phase recovery from intensity-only measurements forms the heart of coherent imaging techniques and *** this study,we demonstrate that a neural network can learn to perform phase recovery and holographic image reconstruction after appropriate *** deep learning-based approach provides an entirely new framework to conduct holographic imaging by rapidly eliminating twin-image and self-interference-related spatial *** neural network-based method is fast to compute and reconstructs phase and amplitude images of the objects using only one hologram,requiring fewer measurements in addition to being computationally *** validated this method by reconstructing the phase and amplitude images of various samples,including blood and Pap smears and tissue *** results highlight that challenging problems in imaging science can be overcome through machine learning,providing new avenues to design powerful computational imaging systems.

关键词： deep learning holography machine learning neural networks phase recovery

A CASE OF TRICUSPID ENDOCARDITIS WITH SUBSEQUENT LUNG ABSCESS

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Chinese Medical Sciences Journal 2007年第2期22卷 136-138页

作者： Hou-li Wang Yi Li teng-da Xu Department of Emergency Medicine Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730

THE incidence of isolated right heart infective endocarditis （IE） is far less common than that of left heart. Clinical presentation is often associated with pulmonary manifestations. The main symptoms include high fever, chest pain, and dyspnea due to septic pulmonary emboli. Degenerative valvular disease, congenital heart diseases, prosthetic valves, long-term hemodialysis, diabetes mellitus predispose patients at increased risk of IE.1 In young persons, IE may be associated with intravenous drug abuse.2 This report dealt with a young patient who had none of the risk factors mentioned above. He was diagnosed and treated for lung abscess and septemia for one and a half months. Further investigation unveiled infective vegetation on tricuspid valve. Following surgical resection of the vegetation, fever and respiratory symptoms completely remitted. The mechanism of the IE occurred on the normal native tricuspid valve is proposed.

关键词： infective endocarditis right heart endocarditis lung abscess emergency