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| 1 | Behavior and dynamics of gecko’s locomotion:The effects of moving directions on a vertical surface显示文摘The study of the movement behavior of geckos on a vertical surface, including the measurement and recording of the reaction forces as they move in different directions, plays an important role in understanding the mechanics of the animals' locomotion. This study provides inspiration for the design of a control system for a bionics robot. The three-dimensional reaction forces of vertical surface-climbing geckos (Gekko gecko) were measured using a three-dimensional force-sensors-array. The behavior of gecko as it moved on a vertical surface was recorded with a high speed camera at 215 fps and the function of each foot of a gecko are discussed in this paper. The results showed that the gecko increased its velocity of movement mainly by increasing the stride frequency in the upward, downward and leftward direction and that the speed had no significant relationship to the attachment and detachment times. The feet above the center-of-mass play a key role in supporting the body, driving locomotion and balancing overturning etc. The movement behavior and foot function of geckos change correspondingly for different conditions, which results in safe and effective free vertical locomotion. This research will be helpful in designing gecko-like robots including the selection of gait planning and its control. | WANG ZhouYi WANG JinTong JI AiHong ZHANG YueYun DAI ZhenDong | 2011 | Chinese Science Bulletin2011,56,6: | 12 |
| 2 | Movement behavior of a spider on a horizontal surface显示文摘Studying the locomotive behavior of animals has the potential to inspire the design of the mechanism and gait patterns of robots ('bio-inspired robots'). The kinematics characteristics of a spider (Ornithoctonus huwena), including movement of the legs, movement of the center of mass (COM) and joint-rotation angle, were obtained from the observation of locomotion behaviors recorded by a three-dimensional locomotion observation system. Our results showed that one set of the stance phase consists of four legs, which were leg-1 and leg-3 on one side and leg-2 and leg-4 on the other side. Additionally, two sets of the stance phase comprised eight legs alternately supporting and driving the motion of the spider's body. The spider primarily increased its movement velocity by increasing stride frequency. In comparison to other insects, the spider, O. huwena, has superior movement stability. The velocity and height of COM periodically fluctuated during movement, reaching a maximum during alternation of leg phase, and falling to a minimum in the steady stance phase. The small change in deflection angle of the hind-leg was effective in driving locomotion, whereas each joint-rotation angle of the fore-leg changed irregularly during locomotion. This research will help in the design of bio-inspired robots, including the selection of gait planning and its control. | WANG ZhouYi WANG JinTong JI AiHong LI HongKai DAI ZhenDong | 2011 | Chinese Science Bulletin2011,56,25: | 5 |
| 3 | Locomotion behavior and dynamics of geckos freely moving on the ceiling显示文摘To understand the mechanical interactions when geckos move on ceiling and to obtain an inspiration on the controlling strategy of gecko-like robot,we measured the ceiling reaction force(CRF) of freely moving geckos on ceiling substrate by a 3-dimensional force measuring array and simultaneously recorded the locomotion behaviors by a high speed camera.CRF and the preload force(FP) generated by the geckos were obtained and the functions and the differences between forces generated by fore-and hind-feet were discussed.The results showed that the speed of gecko moving on the ceiling was 0.17-0.48 m/s,all of the fore-and hind-legs pulled toward the body center.When geckos attached on the ceiling incipiently,the feet generated a very small incipient FP and this fine FP could bring about enough adhesive normal force and tangential force to make the gecko moving on ceiling safely.The FP of the fore-feet is larger than that of the hind-feet.The lateral CRF of the fore-feet is almost the same as that of the hind-feet's.The fore-aft CRF generated by the fore-feet directed to the motion direction and drove their locomotion,but the force generated by the hind-feet directed against the motion direction.The normal CRF of fore-and hind-feet accounted for 73.4% and 60.6% of the body weight respectively.Measurements show that the fore-aft CRF is obviously lager than the lateral and normal CRF and plays a major role in promoting the fore-feet,while the hind-feet of the main role are to provide a smooth movement.The results indicate that due to the differences of the locomotion function of each foot between different surfaces,the gecko can freely move on ceiling surfaces,which inspires the structure designing,gait planning and control developing for gecko-like robot. | WANG ZhouYi WANG JinTong JI AiHong DAI ZhenDong | 2010 | Chinese Science Bulletin2010,55,29: | 5 |
| 4 | Broadband photonic radio frequency(RF) channelization based on coherent optical frequency combs and polarization I/Q demodulation显示文摘In this work,we analyze and demonstrate a novel photonic-assisted broadband and high-resolution radio frequency(RF) channelization scheme based on dual coherent optical frequency combs(OFCs),regular optical de-muxes,and polarization I/Q demodulators in theory and experiment.The use of two coherent combs avoids precise optical alignment,and a numerical filter in digital signal processor(DSP) enables an ideal rectangular frequency response in each channel without any ultra-narrow optical filters.Besides,due to the use of polarization I/Q demodulation,ambiguous frequency estimate in direct detection can be avoided and the amplitude,phase mismatch in traditional I/Q demodulation can be mitigated.In experiment,we use two coherent OFCs with the free spectrum range(FSR) of about 40 GHz to demonstrate the channelization scheme with seven channels,500 MHz channel spacing and frequency coverage from 3.75 GHz to 7.25 GHz.The input RF tones are accurately down-converted to an intermediate frequency(IF) with a maximum frequency error of 110 kHz.Meanwhile,crosstalk and spurious free dynamic range(SFDR) of the scheme are also discussed. | DAI YiTang XU Kun XIE XiaoJun YAN Li WANG RuiXin LIN JinTong | 2013 | Chinese Science Bulletin2013,58,7: | 5 |
| 5 | Microwave photonics: radio-over-fiber links, systems, and applications [Invited]显示文摘Microwave photonics(MWPs)uses the strength of photonic techniques to generate,process,control,and distribute microwave signals,combining the advantages of microwaves and photonics.As one of the main topics of MWP,radio-over-fiber(RoF)links can provide features that are very difficult or even impossible to achieve with traditional technologies.Meanwhile,a considerable number of signal-processing subsystems have been carried out in the field of MWP as they are instrumental for the implementation of many functionalities.However,there are still several challenges in strengthening the performance of the technology to support systems and applications with more complex structures,multiple functionality,larger bandwidth,and larger processing capability.In this paper,we identify some of the notable challenges in MWP and review our recent work.Applications and future direction of research are also discussed. | Kun Xu Ruixin Wang Yitang Dai Feifei Yin Jianqiang Li Yuefeng Ji Jintong Lin | 2014 | Photonics Research2014,2,4: | 4 |
| 6 | 从圣路易斯大学看创业教育与知识转化的契合显示文摘美国圣路易斯大学创业教育分为学习、网络顾问、竞争回报、发展四大主题,从知识转化角度整合了创业教育资源,体现出创业教育的知识脉络,需要引入风险竞争机制和搭建组织网络平台,有效推进创业教育和创业型大学发展。 | 李华晶 张玉利 Jintong Tang | 2015 | 管理现代化2015,35,3: | 4 |
| 7 | A Review on Fiber Lasers显示文摘After a half century of development, fiber laser has evolved from a concept to a great family penetrating into various fields of applications. This paper reviews the history and current development of fiber lasers, with topics covering both continuous wave and short pulse fiber lasers. Important issues such as the major rare earth dopants, fiber laser brightness, polarization effects, clad pumping technology, beam combination, mode locking and pulse shaping are discussed in this paper. | Lin Jintong Lu Dan Dai Yitang | 2012 | China Communications2012,9,8: | 3 |
| 8 | A Eu/Gd-mixed metal-organic framework for ultrasensitive physiological temperature sensing显示文摘A series of Eu/Gd-mixed metal-organic frameworks Eu_xGd_(1-x_NDC(x = 0.0005, 0.001, 0.003, 0.01;H2 NDC = 1,4-naphthalene dicarboxylic acid) utilizing back energy transfer have been developed for physiological temperature sensing. The suitable high triplet level of H_2NDC allows an efficient back energy transfer from Eu^(3+)ions to ligands. The back energy transfer efficiency is further enhanced by the Eu^(3+)/Gd(3+)-mixed strategy. As a consequence, the emission of Eu3+dramatically weakens when temperature arises. The resultant Eu0.0005 Gd0.9995 NDC exhibits exceptional stability and good biocompatibility, and can detect physiological temperature in single-emission, dual-emission, and colorimetric models with ultra-high sensitivity. | Tifeng Xia Jintong Wang Ke Jiang Yuanjing Cui Yu Yang Guodong Qian | 2018 | Chinese Chemical Letters2018,29,6: | 2 |
| 9 | IL-33 drives the antitumor effects of dendritic cells via the induction of Tc9 cells显示文摘Dendritic cell(DC)tumor vaccines exert their antitumor effects through the induction of effector T cells.We recently identified Tc9 cells as a new potent antitumor effector T cell subset.However,approaches to direct DCs to preferably prime antitumor Tc9 cells should be further exploited.Here,we demonstrate that the addition of interleukin(IL)-33 potently promotes the induction of Tc9 cells by DCs in vitro and in vivo.IL-33 treatment also drives the cytotoxic activities of DC-induced Tc9 cells.Notably,IL-33 treatment enhances cell survival and proliferation of DC-primed CD8+T cells.More importantly,the addition of IL-33 during in vitro priming of tumor-specific Tc9 cells by DCs increases the antitumor capability of Tc9 cells.Mechanistic studies demonstrated that IL-33 treatment inhibits exhaustive CD8+T cell differentiation by inhibiting PD-1 and 2B4 expression and increasing IL-2 and CD127(IL-7 receptor-α,IL-7Rα)expression in CD8+T cells.Finally,the addition of IL-33 further promotes the therapeutic efficacy of DC-based tumor vaccines in the OT-I mouse model.Our study demonstrates the important role of IL-33 in DC-induced Tc9 cell differentiation and antitumor immunity and may have important clinical implications. | Ning Liu Yuxue Jiang Jintong Chen He Nan Yinghua Zhao Xiao Chu Alison Wang Dongjiao Wang Tianxue Qin Sujun Gao Ying Yue Siqing Wang | 2019 | Cellular & Molecular Immunology2019,16,7: | 2 |
| 10 | Preface显示文摘Owing to the fast economic growing and the concern over greenhouse gases and air pollution,the development of nuclear energy is one important option to meet the expanded energy consumption in our future.To achieve that goal,continuing and reliable supplies of uranium are critical to future nuclear power projects.As is well known,global terrestrial reserves of uranium are limited and the deposits in China are relatively small.Given the projected big growth in nuclear power in the future,reliable supply of uranium at a reasonable price is essential for China. | DAI YiTang XU Kun XIE XiaoJun YAN Li WANG RuiXin LIN JinTong | 2013 | Science China Chemistry2013,56,11: | 2 |
| 11 | Multi-layer network architecture in support of end-to-end transparent optical connectivities显示文摘In order to effectively accommodate a wide variety of emerging and future applications with diverse requirements, an intelligent optical network capable of the rapid and resilient delivery of on-demand transparent transmission capacity is required. This paper investigates a multi-layer network architecture where a generalized multiple protocol label switching (GMPLS) controlled transparent wavelength switched optical network (WSON), as the transport core, collaborates with multiple client optical burst switching (OBS) networks distributed at the edge. Dynamic interworking mechanism as well as the related signaling/routing protocol ex- tensions for multi-QoS burst streams transmission among different OBS domains are proposed so as to provision an end-to-end (e2e) transparent optical connectivity with on-demand bandwidth to end-users. Moreover, the survivability of this transparent optical connectivity is also addressed. To validate the feasibility of this architecture, an integrated OBS/WSON network testbed was constructed, and stable e2e transparent connectivities were successfully demonstrated for an efficient multi-QoS burst streams transmission. | GUO HongXiang WU Jian HONG XiaoBin LIN JinTong | 2011 | Science China(Information Sciences)2011,54,3: | 2 |
| 12 | 技术人力资本、自有资金与创业成败关系实证研究显示文摘从技术和资金与创业之间的联系出发,提出并构建了技术人力资本、自有资金与创业成败的关系模型,通过对CSPED的321个样本进行分析,发现技术人力资本与自有资金分别对新企业成立具有显著的积极作用;二者水平越高,创业者越不可能退出创业活动。但是,技术人力资本与自有资金的水平,对新企业初期的营利并不具有显著作用;而且,在创业过程中,创业者的技术人力资本与自有资金之间的交互效应不显著。研究从人力资本角度深化了创业驱动因素的分析,同时有助于创业者评价和决策初始资源的运用。 | 李华晶 Jintong Tang 王秀峰 | 2016 | 当代经济管理2016,38,5: | 2 |
| 13 | Influence of background pressure on the microstructure and optical properties of Mo/Si multilayers fabricated by magnetron sputtering显示文摘Mo/Si multilayers were fabricated by using magnetron sputtering method at different background pressures:6×10-5 Torr,3×10-5 Torr,and 3×10-6 Torr.The reflectivity of the Mo/Si multilayers increased from 1.93% to 16.63%,and the center wavelength revealed a blue shift to 0.12 nm with the decrease of background pressure.Grazing incident X-ray diffraction(GIXRD) indicated that multilayers fabricated at high background pressure possessed better periodic structure and thinner Mo-on-Si interlayers.Low crystallization degree in(110) preferred the orientation of Mo layers and serious interdiffusion in the Mo/Si multilayers fabricated at low background pressure were observed by transmission electron microscopy(TEM).According to quantitative analysis of microstructural parameters,the Mo layers thickness and thickness ratio of Mo/Si multilayers both decreased and approached the design value gradually by the decrease of background pressure.In addition,the thicknesses of Mo-on-Si and Si-on-Mo interlayers were 1.17 nm and 0.85 nm respectively.It is suggested that the influence of background pressures on the microstructure has a critical role in determining the optical properties of Mo/Si multilayers. | LV Peng ZHANG ZaiQiang GUAN JinTong WANG XiaoDong HOU XiuLi ZHANG LingYan WANG JiJun CHEN Bo GUAN QingFeng | 2013 | Science China(Physics,Mechanics & Astronomy)2013,56,9: | 2 |
| 14 | Effect of postcrosslinking modification with glutaraldehyde on the properties of thermoplastic starch/poly(vinyl alcohol) blend films显示文摘 | ZiqinLiu ManJiang XiaBai XiaogangDong JinTong JiangZhou | 2012 | J Appl Polym Sci2012,,5: | 1 |
| 15 | How entrepreneurs discover opportunities in China: An institutional view显示文摘 | Jintong Tang | 2010 | Asia Pacific Journal of Management2010,,3: | 1 |
| 16 | Dynamically reconfigurable radio-over-fiber network with medium access control protocol to provide network access to train passengers显示文摘An innovative dynamically reconfgurable radio-over-fber(RoF)network equipped with an intelligent medium access control(MAC)protocol is proposed to provide broadband access to train passengers in railway high-speed mobile applications.The proposed RoF network architecture is based on a reconfgurable control station and remote access unit(RAU)that is equipped with a fxed flter and tunable flter.The proposed hybrid frequency-division multiplexing/time division multiple access(FDM/TDMA)based MAC protocol realizes failure detection/recovery and dynamic wavelength allocation to remote access units.Simulation result shows that with the proposed MAC protocol,the control station can detect failures and recover and dynamic wavelength allocation can increase the wavelength resource utilization to maintain network performance. | SHEN Xi XU Kun SUN XiaoQiang WU Jian LIN JinTong | 2013 | Science China(Information Sciences)2013,56,10: | 1 |
| 17 | Dynamic call and connection admission control in automatically switched optical network for grid computing applications显示文摘In recent years,Grid computing applications are becoming more and more important to the scientific and business communities and are likely to open to the consumer market and widely develop in the near future,which is a great challenge brought by the potentially large number of Grid users(perhaps millions)and high frequency of their job requests.Automatically switched optical network(ASON),which is a promising high capacity intelligent transport network infrastructure,has been already deployed in the world and regarded as a promising solution to foster the expansion of Grid computing from local area networks to wide area networks.However,by theoretical analysis and simulative evaluation of Grid job blocking in the distributed call and connection setup process of ASON,this paper verifies that ASON and the conventional admission control mechanism confront a problem in supporting future large-scale Grid computing.In order to address this issue,a novel dynamic call and connection admission control(DCCAC)scheme is proposed to improve the network performance and guarantee quality of service(QoS)of Grid applications.This scheme is applicable with complete network information,no network information and partial network information.Numerical results show that the DCCAC scheme can improve the efficiency of the network to a great extent.Moreover,all the analysis and algorithms in this paper are based on ITU-T ASON recommendations,which make the DCCAC scheme more applicable in network engineering for future Grid computing. | LIU Lei GUO HongXiang HONG XiaoBin WU Jian LIN JinTong | 2012 | Science China(Information Sciences)2012,55,2: | 1 |
| 18 | Stakeholder–firm power difference, stakeholders’ CSR orientation, and SMEs’ environmental performance in China显示文摘 | Zhi Tang Jintong Tang | 2011 | Journal of Business Venturing2011,,4: | 1 |
| 19 | Performance evaluation of absorption thermal energy storage/transmission using ionic liquid absorbents显示文摘Efficient thermal energy storage and transmission are considered as two of the most significant challenges for decarbonisation in thermal energy utilization.The liquid-gas absorption thermal energy storage/transmission sys-tem is promising approach to tackle these challenges,owing to the long-term stability,flexibility in heat/cooling output,and liquid medium.At present,the shortcomings of conventional absorption working fluids have trig-gered considerable interest in searching for novel working pairs,such as ionic liquids(ILs).However,it is still unknown whether ILs can work effectively in thermal energy transmission with long distance.In this study,the absorption thermal energy storage/transmission systems using IL absorbents are theoretically investigated.mod-eling frameworks for working pairs screening and performance evaluation are proposed.Results show that the IL-based working pairs present better or comparable performance than conventional working pairs(including H_(2) O/Salts and NH 3/Salts).Among the investigated IL-based working pairs,H_(2) O/[EMIM][EtSO 4]presents high-est COP(around 0.62)and exergy efficiency(around 0.32),and is relatively close to H_(2) O/LiBr.As for energy storage density,H_(2) O/[EMIM][Ac]performs better than H_(2) O/LiBr,presenting 137.4 kWh/m 3 with a desorption temperature of 115°C.The present work provides a straightforward screening of IL absorbents for thermal energy storage and transmission purposes. | Jintong Gao Zhenyuan Xu | 2023 | Energy and Built Environment2023,4,3: | 1 |
| 20 | Variation in spatial and temporal kinematics of level, vertical and inverted locomotion on a stinkbug Erthesina fullo显示文摘In the learning of locomotion behavior of a stinkbug Erthesina fullo, the seeked principle of its locomotion can be an important inspiration on the design of six-legged robot. To achieve this goal, in this paper, locomotion behavior of stinkbugs on glass and plastic foam are recorded. Hereby, variation in spatial and temporal kinematics of level, vertical and inverted locomotion is analyzed. Differential leg function and adhesive mechanism as well as the advantage of non-isometric legs of insects are presented. With increasing stride frequency, the speed of level, vertical and inverted locomotion can be higher without adjusting stride length. Variation in gait characteristics between level and vertical locomotion is very little, but lower speed and larger duty factor of inverted locomotion can be occurred while climbing on glass. On the surface of vertical and inverted plastic foam, stinkbugs cannot walk steady and agilely due to its adhesive mechanism. | Aihong Ji Yanfeng Lei Jintong Wang Yong Ni Benzheng Dong Zhendong Dai | 2014 | Chinese Science Bulletin2014,59,26: | 1 |