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Research in Astronomy and Astrophysics 2024年第8期24卷 32-41页

作者： Yingze Shan Xiaoxuan liu Xing Yang Haoyu Yuan houjun lü Guangxi Key laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China Department of Astronomy School of PhysicsHuazhong University of Science and TechnologyWuhan 430074China

Theoretically,a supra-massive neutron star or magnetar may be formed after the merger of binary neutron ***210323A is a short-duration gamma-ray burst(GRB)with a duration of lasting~1 *** light curve of the prompt emission of GRB 210323A shows a signal-peaked structure and a cutoff power-law model can adequately fit the spectra with E_p=1826±*** interestingly,it has an extremely long-lasting plateau emission in the X-ray afterglow with a duration of~10^(4)s,and then follows a rapid decay with a decay slope~*** temporal feature is challenging by invoking the external shock *** this paper,we suggest that the observed long-lasting X-ray plateau emission is caused by the energy injection of dipole radiation from supra-massive magnetar,and the abrupt decay following the longlasting X-ray plateau emission is explained by supra-massive magnetar collapsing into a black *** is the short GRB(SGRB)with the longest X-ray internal plateau emission powered by a supra-massive neutron *** this is the case,one can estimate the physical parameters of a supra-massive magnetar,and compare with other *** also discuss the possible gravitational-wave emission,which is powered by a supra-massive magnetar and its detectability,and the possible kilonova emission,which is powered by r-process and magnetar spin-down to compare with the observed data.

关键词： (stars)gamma-ray burst general-(stars)gamma-ray burst individual(GRB 210323A)-stars magnetars

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省属高校仪器设备政府采购的实践与探索

实验技术与管理 2010年第12期27卷 224-227页

作者：吕厚均黑龙江大学资产管理处

从回顾政府采购的概念、组织形式和采购方式入手,简述了政府采购制度的产生及黑龙江省政府采购的现状,提出了构建省属高校仪器设备政府采购模式,介绍了黑龙江大学加强仪器设备政府采购工作的具体措施及成效。

关键词：政府采购设备采购地方高校

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浅谈高支模技术在工程中的应用

城市建筑 2014年第30期11卷 84-85页

作者：吕厚俊南通华新建工集团有限公司南通226600

本文论述了高支模施工技术的施工的方法。在实际应用中严格按设计方案施工，取得了理想的效果。

关键词：高支撑间距剪刀撑跨度

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深基坑综合围护施工技术

城市建筑 2014年第30期11卷 81-82,120页

作者：吕厚俊南通华新建工集团有限公司

太仓市文化艺术中心项目基坑开挖最大深度为14.1 m。浅基坑采用土钉墙支护，深基坑采用钻孔灌注桩加一道混凝土支撑，在灌注桩外侧施工一排旋喷桩作为防渗止水帷幕，基底采用深井降水。结果表明，该围护设计及施工安全、经济。

关键词：基坑支护灌注桩旋喷桩止水帷幕混凝土支撑

Analysis of in-plane 1:1:1 internal resonance of a double cable-stayed shallow arch model with cables’ external excitations

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Applied Mathematics and Mechanics(English Edition) 2019年第7期40卷 977-1000页

作者： Yunyue CONG houjun KANG Tieding GUO College of Civil Engineering Hunan University Changsha 410082 China Key laboratory for Damage Diagnosis of Engineering Structures of Hunan Province Hunan University Changsha 410082 China

The nonlinear dynamic behaviors of a double cable-stayed shallow arch model are investigated under the one-to-one-to-one internal resonance among the lowest modes of cables and the shallow arch and external primary resonance of cables. The in-plane governing equations of the system are obtained when the harmonic excitation is applied to cables. The excitation mechanism due to the angle-variation of cable tension during motion is newly introduced. Galerkin’s method and the multi-scale method are used to obtain ordinary differential equations (ODEs) of the system and their modulation equations, respectively. Frequency- and force-response curves are used to explore dynamic behaviors of the system when harmonic excitations are symmetrically and asymmetrically applied to cables. More importantly, comparisons of frequency-response curves of the system obtained by two types of trial functions, namely, a common sine function and an exact piecewise function, of the shallow arch in Galerkin’s integration are conducted. The analysis shows that the two results have a slight difference;however, they both have sufficient accuracy to solve the proposed dynamic system.

关键词： nonlinear dynamics cable-stayed system internal resonance primary resonance multi-scale method

A Radio-Telemetry System for Navigation and Recording Neuronal Activity in Free-Roaming Rats

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Journal of Bionic Engineering 2012年第4期9卷 402-410页

作者： Dian Zhang Yanling Dong Megan li houjun Wang School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731 P. R. China School of Medicine Qingdao University Qingdao 266071 P R. China Shandong Eye Institute Qingdao 266071 P. R. China Zanvyl Krieger School of Arts and Sciences The Johns Hopkins University Baltimore 21218 USA

A radio-telemetry recording system is presented which is applied to stimulate specific brain areas and record neuronal ac- tivity in a free-roaming rat. The system consists of two major parts： stationary section and mobile section. The stationary section contains a laptop, a Micro Control Unit （MCU）, an FM transmitter and a receiver. The mobile section is composed of the headstage and the backpack （which includes the mainboard, FM transmitter, and receiver）, which can generate biphasic mi- crocurrent pulses and simultaneously acquire neuronal activity. Prior to performing experiments, electrodes are implanted in the Ventral Posterolateral （VPl） thalamic nucleus, primary motor area （M1） and Medial Forebrain Bundle （MFB） of the rat. The stationary section modulates commands from the laptop for stimulation and demodulates signals for neuronal activity recording. The backpack is strapped on the back of the rat and executes commands from the stationary section, acquires neuronal activity, and transmits the neuronal activity singles of the waking rat to the stationary section. All components in the proposed system are commercially available and are fabricated from Surface Mount Devices （SMD） in order to reduce the size （25 mm×15 mm ×2 mm） and weight （10 g with battery）. During actual experiments, the backpack, which is powered by a rechargeable lithium battery （4 g）, can generate biphasic microcurrent pulse stimuli and can also record neuronal activity via the FM link with a maximum transmission rate of 1 kbps for more than one hour within a 200 m range in an open field or in a neighboring chamber. The test results show that the system is able to remotely navigate and control the rat without any prior training, and acquire neuronal activity with desirable features such as small size, low power consumption and high precision when compared with a commercial 4-channel bio-signal acquisition and processing system.

关键词： bio-robot radio-telemetry microcurrent stimulation navigation neuronal activity recording

Electric-Circuit Realization of Fast Quantum Search

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Research 2021年第1期2021卷 868-875页

作者： Naiqiao Pan Tian Chen houjun Sun Xiangdong Zhang Key laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education Beijing Key Laboratory of Nanophotonics&Ultrafine Optoelectronic SystemsSchool of PhysicsBeijing Institute of TechnologyBeijing 100081China Beijing Key laboratory of Millimeter Wave and Terahertz Techniques School of Information and ElectronicsBeijing Institute of TechnologyBeijing 100081China

Quantum search algorithm,which can search an unsorted database quadratically faster than any known classical algorithms,has become one of the most impressive showcases of quantum *** has been implemented using various quantum ***,we demonstrate both theoretically and experimentally that such a fast search algorithm can also be realized using classical electric *** classical circuit networks to perform such a fast search have been *** has been shown that the evolution of electric signals in the circuit networks is analogies of quantum particles randomly walking on graphs described by quantum *** searching efficiencies in our designed classical circuits are the same to the quantum *** classical circuit networks possess good scalability and stability,the present scheme is expected to avoid some problems faced by the quantum ***,our findings are advantageous for information processing in the era of big data.

关键词： theory. quantum faster

A novel approach for unlabeled samples in radiation source identification

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Journal of Systems Engineering and Electronics 2022年第2期33卷 354-359页

作者： YANG Haifen ZHANG Hao WANG houjun GUO Zhengyang School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Radiation source identification plays an important role in non-cooperative communication scene and numerous methods have been proposed in this field. Deep learning has gained popularity in a variety of computer vision tasks. Recently, it has also been successfully applied for radiation source ***, training deep neural networks for classification requires a large number of labeled samples, and in non-cooperative applications, it is unrealistic. This paper proposes a method for the unlabeled samples of unknown radiation source. It uses semi-supervised learning to detect unlabeled samples and label new samples automatically. It avoids retraining the neural network with parameter-transfer learning. The results show that compared with the traditional algorithms, the proposed algorithm can offer better accuracy.

关键词： radiation source identification deep learning semisupervised learning

Dynamical modeling and non-planar coupled behavior of inclined CFRP cables under simultaneous internal and external resonances

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Applied Mathematics and Mechanics(English Edition) 2019年第5期40卷 649-678页

作者： houjun KANG Tieding GUO Weidong ZHU Junyi SU Bingyu ZHAO Hunan Provincial Key lab on Damage Diagnosis for Engineering Structures Hunan University Department of Mechanical Engineering University of Maryland College of Civil Engineering Hunan University

A dynamic model for an inclined carbon ?ber reinforced polymer(CFRP)cable is established, and the linear and nonlinear dynamic behaviors are investigated in detail. The partial differential equations for both the in-plane and out-of-plane dynamics of the inclined CFRP cable are obtained by Hamilton's principle. The linear eigenvalues are explored theoretically. Then, the ordinary differential equations for analyzing the dynamic behaviors are obtained by the Galerkin integral and dimensionless *** steady-state solutions of the nonlinear equations are obtained by the multiple scale method(MSM) and the Newton-Raphson method. The frequency-and force-response curves are used to investigate the dynamic behaviors of the inclined CFRP cable under simultaneous internal(between the lowest in-plane and out-of-plane modes) and external resonances, i.e., the primary resonances induced by the excitations of the in-plane mode,the out-of-plane mode, and both the in-plane mode and the out-of-plane mode, respectively. The effects of the key parameters, e.g., Young's modulus, the excitation amplitude,and the frequency on the dynamic behaviors, are discussed in detail. Some interesting phenomena and results are observed and concluded.

关键词： inclined carbon fiber reinforced polymer(CFRP)cable bifurcation nonlinear dynamics internal resonance external resonance

Direct adaptive control for nonlinear uncertain system based on control lyapunov function method

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Journal of Systems Engineering and Electronics 2006年第3期17卷 619-623页

作者： Chen Yimei Han Zhengzhi Tang houjun Dept. of Automation Tianjin Polytechnic Univ. Tianjin 300160 P. R. China School of Electronic Information & Electrical Engineering Shanghai Jiaotong Univ. Shanghai 200030 P. R. China

The problem of adaptive stabilization of a class of multi-input nonlinear systems with unknown parameters both in the state vector-field and the input vector-field has been considered. By employing the control lyapunov function method, a direct adaptive controller is designed to complete the global adaptive stability of the uncertain system. At the same time, the controller is also verified to possess the optimality. Example and simulations are provided to illustrate the effectiveness of the proposed method.

关键词： adaptive control control lyapunov function nonlinear uncertain system optimality.