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Discrimination of Motor Imagery Patterns by Electroencephalogram Phase Synchroniz.tion Combined With Frequency Band Energy

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IEEE/CAA Journal of Automatica Sinica 2017年第3期4卷 551-557页

作者： Chuanwei liu Yunfa Fu Jun Yang Xin Xiong Huiwen Sun z.engtao Yu Faculty of Information Engineering and Automation Kunming University Science and Technology Shanghai Micro Electronics Equipment Co. Ltd. (SMEE)

Central nerve signal evoked by thoughts can be directly used to control a robot or prosthetic devices without the involvement of the peripheral nerve and *** is a new strategy of human-computer interaction.A method of electroencephalogram(EEG) phase synchroniz.tion combined with band energy was proposed to construct a feature vector for pattern recognition of brain-computer interaction based on EEG induced by motor imagery in this paper,rhythm and beta rhythm were first extracted from EEG by band pass filter and then the frequency band energy was calculated by the sliding time window;the instantaneous phase values were obtained using Hilbert transform and then the phase synchroniz.tion feature was calculated by the phase locking value(PLV) and the best time interval for extracting the phase synchroniz.tion feature was searched by the distribution of the PLV value in the time ***,discrimination of motor imagery patterns was performed by the support vector machine(SVM).The results showed that the phase synchroniz.tion feature more effective in4s-7s and the correct classification rate was 91.4%.Compared with the results achieved by a single EEG feature related to motor imagery,the correct classification rate was improved by 3.5 and4.3 percentage points by combining phase synchroniz.tion with band *** indicate that the proposed method is effective and it is expected that the study provides a way to improve the performance of the online real-time brain-computer interaction control system based on EEG related to motor imagery.

关键词： Brain-computer interaction(BCI) electroencephalogram(EEG) frequency band energy motor imagery phase synchroniz.tion

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Global methylation status of sperm DNA in carriers of chromosome structural aberrations

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Asian Journal of Andrology 2017年第1期19卷 117-124页

作者： Marta Olsz.wska Miroslawa z.Barcisz.wska Monika Fracz.k Nataliya Huleyuk Vyacheslav B chernykh Danuta z.stavna Jan Barcisz.wski Maciej Kurpisz Department of Reproductive Biology and Stem Cells Institute of Human Genetics Polish Academy of Sciences Strzeszynska 32 60-479 Poznan Poland Department of RNA Biology Institute of Bioorganic Chemistry Polish Academy of Sciences Noskowskiego 12/14 61-704 Poznan Poland Institute of Hereditary Pathology Ukrainian Academy of Medical Sciences Lysenko Street 31a 79000 Lviv Ukraine Research Centre for Medical Genetics Russian Academy of Medical Sciences Moskvorechie Street 1115478 Moscow Russian Federation.

Male infertility might be clearly associated with aberrant DNA methylation patterns in human spermatoz.a. An association between oxidative stress and the global methylation status of the sperm genome has also been suggested. The aim of the present study was to determine whether the global sperm DNA methylation status was affected in the spermatoz.a of carriers of chromosome structural aberrations. The relationships between the 5-methylcytosine （msC） levels in spermatoz.a and chromatin integrity status were evaluated. The study patients comprised male carriers of chromosome structural aberrations with reproductive failure （n = 24）, and the controls comprised normoz.ospermic sperm volunteers （n = 23）. The global msC level was measured using thin-layer chromatography （TLC） and immunofluorescence （IF） techniques. The sperm chromatin integrity was assessed using aniline blue （AB） staining and TUNEL assay. The mean msC levels were similar between the investigated chromosome structural aberrations carriers （P） and controls （K）. However, sperm chromatin integrity tests revealed significantly higher values in chromosomal rearrangement carriers than in controls （P 〈 0.05）. Although the potential relationship between sperm chromatin integrity status and sperm DNA fragmentation and the msC level juxtaposed in both analyz.d groups （P vs K） was represented in a clearly opposite manner, the low chromatin integrity might be associated with the high hypomethylation status of the sperm DNA observed in carriers of chromosome structural aberrations.

关键词： 5-methylcytosine chromatin integrity chromosomal rearrangement chromosome translocation global DNA methylation male infertility

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INVESTIGATION OF INFLUENCE OF HYDROGEN ATTACK ONFATIGUE PROPERTIES OF PRESSURE VESSEL STEELS

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Acta Metallurgica Sinica(English Letters) 1998年第2期11卷 141-149页

作者： J.L.Li K.F.Wang J.Li z.M.Yao W.Ke Fushun Petroleum Inst Fushun China

Influence of hydrogen attack on mechanical and fatigue properties of 1020, 15CrMo and 2.25Cr-1Mo steels has been studied, which were exposed to gaseous hydrogen at pressure of 18MPa and 300-480℃ for up to 480h. The results of fatigue test showed that hydrogen attack (HA) resulted in an obvious change in fatigue properties of 1020 and 15CrMo steels, however, 2.25Cr-1Mo steel showed a lower susceptibility to hydrogen attack due to the addition of Cr and Mo. Fatigue crack behaviour for 1020 steel is attributed to hydrogen attack damage and the crack closure induced by the rough cracking surface, which lead to a valley on △Kth～HA% plot. The change in the fatigue behaviour of 15CrMo steel is possibly caused by severe surface decarburiz.tion.

关键词： hydrogen attack pressure vessel steel threshold △K value crack closure

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The phototherapy toward corneal neovasculariz.tion elimination:An efficient,selective and safe strategy

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Chinese Chemical Letters 2021年第1期32卷 99-101页

作者： Jingwen Yu Chengchao Chu Yiming Wu Gang liu Wei Li Eye Institute of Xiamen University Fujian Provincial Key Laboratory of Ophthalmology and Visual ScienceSchool of MedicineXiamen UniversityXiamen 361102China State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics&Center for Molecular Imaging and Translational Medicine School of Public HealthXiamen UniversityXiamen 361102China

Corneal neovasculariz.tion(CNV) can induce severe visual impairment and even *** treatments have limited efficacy and some undesirable side ***(FT) is a modern medical technique in CNV treatment and worth further *** has various advantages and nanoparticle-mediated drug delive ry also contributes to CNV *** combined with functional nanoparticles featuring photoacoustic imaging contrast properties can accomplish accurate and safe inhibition of CNV,thus is promising in clinical application.

关键词： Corneal neovasculariz.tion Phototherapy Nanotechnology R-nano ICG Photoacoustic imaging

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Broad gain,continuous-wave operation of InP-based quantum cascade laser atλ~11.8μm

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Chinese Physics B 2021年第12期30卷 413-417页

作者： Huan Wang Jin-Chuan z.ang Feng-Min Cheng z.ng-Hui Gu Ning z.uo Shen-Qiang z.ai Feng-Qi liu Jun-Qi liu Shu-Man liu z.an-Guo Wang Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Beijing Academy of Quantum Information Sciences Beijing 100193China

We demonstrate a broad gain,continuous-wave(CW)operation InP-based quantum cascade laser(QCL)emitting at 11.8μm with a modified dual-upper-state(DAU)and diagonal transition active region design.A 3 mm cavity length,16.5μm average ridge wide QCL with high-reflection(HR)coatings demonstrates a maximum peak power of 1.07 W at 283 K and CW output power of 60 m W at 293 *** device also shows a broad and dual-frequency lasing spectrum in pulsed mode and a maximum average power of 258.6 mW at 283 ***,the full width at half maximum(FWHM)of the electroluminescent spectrum measured at subthreshold current is 2.37μm,which indicates a broad gain spectrum of the *** tuning range of 1.38μm is obtained by a grating-coupled external cavity(EC)Littrow configuration,which is beneficial for gas detection.

关键词： dual-upper-state(DAU) quantum cascade lasers external cavity gas detection

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Identity Contradictions in Islamic Awakening:Harmonising Intellectual Spheres of Identity

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Asian Journal of Middle Eastern and Islamic Studies 2019年第3期13卷 331-350页

作者： A.z.Obiedat Middle East and South Asia Studies Program Wake Forest UniversityWinston-SalemNCUSA

The Islamic awakening demonstrates the following essential ***,it calls for the authentic return to Arab-Islamic heritage,while deeming as heretical several traditional doctrines;second,it strives for Arab unity without recognising the needed concessions that should be given to unify non-Muslim Arabs;third,it is proud of the creativity of Islamic heritage in natural and philosophical fields while rejecting the indebtedness to Greek or z.roastrian influences;fourth,it embraces the Abrahamic path in response to atheistic trends and calling for unity with Jewish and Christian monotheisms,without accepting the possibility of tracing the influence of these traditions on the Qur’an and without admitting the non-Abrahamic traditions such as Hinduism into the spiritual camp;and fifth,it admits the primacy of scientific knowledge,while disparaging its methodological presumptions seen in *** articulation of critical views to resolve these contradictions in the Arab world present creative reformation attempts to harmonise intellectual spheres of identity。

关键词： Islamic movements als:ah:wah progressive Muslims post-colonial resistance Islamic awakening

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小z.牙套日记

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中文自修 2007年第2期 30-31页

作者：小z

哇,金黄的梭子蟹,喷香的炸猪排,诱人的烤鸡……呜呜,这么丰盛诱人的大餐,小z.只能望洋兴叹。听着妈妈“克拉克拉”咬着蟹脚,看

关键词：看我七十二变橡皮筋

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Building an IPv6 address generation and traceback system with NIDTGA in Address Driven Network

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Science China(Information Sciences) 2015年第12期58卷 14-27页

作者： liu Ying REN Gang WU JianPing z.ANG ShengLin HE Lin JIA YiHao Institute for Network Sciences and Cyberspace Tsinghua University Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University

In the design and construction process of Next Generation Internet, it is important to identify the source of each IP packet forwarding accurately, especially for the support of precise fine-grained management,control, traceability and improving the trustworthiness of the Internet. This paper designed a scalable Network Identity(NID) scheme for the Internet users, proposed NIDTGA(Network Identity and Time Generated Address), an IPv6 address generation algorithm embedded NID and time information, then designed and implemented an IPv6 address generation and traceback system based on NIDTGA. The design of NIDTGA, which reflects the length, time and owner attributes of the IP address, can be a good support to ADN(Address Driven Network). At the same time, by embedding the key elements of user identity and time in the IPv6 address,and by taking into account both the traceability and privacy, NIDTGA can provide a technical basis for the establishment of the network trust mechanism, and achieve the traceability of security event.

关键词： network identity IPv6 Address Driven Network IP traceback IP address generation

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A low-power Rijndael S-Box based on pass transmission gate and composite field arithmetic

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Journal of z.ejiang University-Science A(Applied Physics & Engineering) 2007年第10期8卷 1553-1559页

作者： z.NG Yong-hong z.U Xue-cheng liu z.eng-lin LEI Jian-ming Research Center for VLSI and Systems Department of Electronic Science ＆ Technology Huazhong University of Science ＆ Technology Wuhan 430074 China

Using composite field arithmetic in Galois field can result in the compact Rijndael S-Box. However, the power con- sumption of this solution is too large to be used in resource-limited embedded systems. A full-custom hardware implementation of composite field S-Box is proposed for these targeted domains in this paper. The minimiz.tion of power consumption is implemented by optimiz.ng the architecture of the composite field S-Box and using the pass transmission gate (PTG) to realiz. the logic functions of S-Box. Power simulations were performed using the netlist extracted from the layout. HSPICE simulation results indicated that the proposed S-Box achieves low power consumption of about 130 μW at 10 MHz.using 0.25 μm/2.5 V technology, while the consumptions of the positive polarity reed-muller (PPRM) based S-Box and composite field S-Box based on the conventional CMOS logic style are about 240 μW and 420 μW, respectively. The simulations also showed that the presented S-Box obtains better low-voltage operating property, which is clearly relevant for applications like sensor nodes, smart cards and radio frequency identification (RFID) tags.

关键词： Composite field Rijndael S-Box Full-custom Pass transmission gate (PTG) Low power consumption Low-voltage

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Skill Learning for Human-Robot Interaction Using Wearable Device

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Tsinghua Science and Technology 2019年第6期24卷 654-662页

作者： Bin Fang Xiang Wei Fuchun Sun Haiming Huang Yuanlong Yu Huaping liu Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China Fuz.ou University Fuzhou 350108 China College of Information Engineering Shenzhen UniversityShenzhen 518060China

With the accelerated aging of the global population and escalating labor costs, more service robots are needed to help people perform complex tasks. As such, human-robot interaction is a particularly important research topic. To effectively transfer human behavior skills to a robot, in this study, we conveyed skill-learning functions via our proposed wearable device. The robotic teleoperation system utiliz.s interactive demonstration via the wearable device by directly controlling the speed of the motors. We present a rotation-invariant dynamicalmovement-primitive method for learning interaction skills. We also conducted robotic teleoperation demonstrations and designed imitation learning experiments. The experimental human-robot interaction results confirm the effectiveness of the proposed method.

关键词： skill learning interaction teleoperation dynamical movement primitive

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