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Trade credit financing for supply chain coordination under financial challenges:a multi‑leader–follower game approach
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作者 Faranak Emtehani Nasim Nahavandi Farimah Mokhatab Rafiei 《Financial Innovation》 2023年第1期131-169,共39页
This study is designed to solve supply chain inefficiencies caused by some members’financial problems,such as capital shortages and financing restrictions in a stochastic environment.To this end,we have established a... This study is designed to solve supply chain inefficiencies caused by some members’financial problems,such as capital shortages and financing restrictions in a stochastic environment.To this end,we have established a supply chain finance framework by designing two novel coordinating contracts based on trade credit financing for different problem settings.These contracts are modeled in the form of multi-leader Stackelberg games that address horizontal and vertical competition in a supply chain consisting of multiple suppliers and a financially constrained manufacturer.However,previous studies in the trade credit literature have addressed only simple vertical competition,that is,seller-buyer competition.To solve the proposed models,two algorithms were developed by combining population-based metaheuristics,the Nash-domination concept,and the Nikaido-Isoda function.The results demonstrate that the proposed supply chain finance framework can eliminate supply chain inefficiencies and make a large profit for suppliers,as well as the financially constrained manufacturer.Furthermore,the results of the contracts’analysis showed that if the manufacturer is required to settle its payments to suppliers before the end of the period,the trade credit contract cannot coordinate the supply chain because of a lack of incentive for suppliers.However,if the manufacturer is allowed to extend its payments to the end of the period,the proposed trade credit financing contract can coordinate the supply chain.Finally,the sensitivity analysis results indicate that the worse the financial status of the manufacturer,the more bargaining power suppliers have in determining the contract parameters for more profit. 展开更多
关键词 Supply chain coordination Financial constraint Multi-leader–follower Stackelberg game Trade credit financing Population-based metaheuristics
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Precious Scrolls of Chinese Devout Women Buddhist Followers:A Case Study of Wilt Idema’s Pitfalls of Piety for Married Women
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作者 YAO Wei JIN Qian 《Cultural and Religious Studies》 2023年第4期170-173,共4页
Deeply-rooted in China’s popular culture,precious scrolls(Baojuan)are the golden material to display popular religious belief of the mass.Based on the rare texts sorted and annotated by Shang Lixin,Dutch Sinologist W... Deeply-rooted in China’s popular culture,precious scrolls(Baojuan)are the golden material to display popular religious belief of the mass.Based on the rare texts sorted and annotated by Shang Lixin,Dutch Sinologist Wilt L.Idema continues his journey of translating precious scrolls.Focused on the theme of devoted women Buddhist followers in Ming dynasty,he explores the ethical choices of married women in facing the betrayal of servants or concubines.His translations not only add important reading material to Western readers in the field of Chinese popular literature,but also set standard for the coming translators in rendering Chinese ballads. 展开更多
关键词 Precious Scrolls Women Buddhist followers ethical choice TRANSLATIONS
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Investigating the characteristic delay time in the leader–follower behavior in children single-file movement
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作者 薛书琦 Nirajan Shiwakoti +1 位作者 施晓蒙 肖尧 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第2期567-573,共7页
The single-file movement experiment offered a convenient way to investigate the one-dimensional leader–follower behavior of pedestrians. This study investigated the time delays of children pedestrians in the leader–... The single-file movement experiment offered a convenient way to investigate the one-dimensional leader–follower behavior of pedestrians. This study investigated the time delays of children pedestrians in the leader–follower behavior by introducing a time-dependent delayed speed correlation. A total of 118 German students from the fifth grade(aged11–12 years old) and the 11th grade(aged 17–18 years old) participated the single-file experiment. The characteristic delay time for each pedestrian was identified by optimising the time-dependent delayed speed correlation. The influences of the curvature of the experimental scenario, density, age, and gender on the delay time were statistically examined. The results suggested that to a large extent, the revealed characteristic delay time was a density-dependent variable, and none of the curvatures, the age and gender of the individual, and the age and gender of the leader had a significant influence on it. The findings from this study are variable resources to understand the leader–follower behavior among children pedestrians and to build related simulation models. 展开更多
关键词 speed matching speed correlation CURVATURE following behavior
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基于Leader-follower与人工势场的多移动机器人编队控制 被引量:5
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作者 张凤 孙哲 刘美菊 《沈阳建筑大学学报(自然科学版)》 CAS 北大核心 2010年第4期803-807,共5页
目的提出一种基于Leader-follower法和人工势场法相结合的多移动机器人编队控制方法,从而克服传统Leader-follower法中由微分方程确定的控制率无法将队形控制与避障统一的缺点.方法确定关于参数l和φ的人工势场函数,通过控制参数l和φ,... 目的提出一种基于Leader-follower法和人工势场法相结合的多移动机器人编队控制方法,从而克服传统Leader-follower法中由微分方程确定的控制率无法将队形控制与避障统一的缺点.方法确定关于参数l和φ的人工势场函数,通过控制参数l和φ,使多移动机器人保持预定队形;机器人follower通过主动避障方法躲避障碍物,确定一个总的人工势场控制队形和避障.结果算法能使多移动机器人系统成功地进行编队和避障.结论通过仿真试验,机器人系统能够顺利通过狭窄通道,躲避静态障碍物和动态障碍物,并在避障后恢复队形,顺利到达目标,算法简单,从而验证了算法的有效性. 展开更多
关键词 多移动机器人 编队控制 人工势场法 Leader—follower
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采用Leader-follower和模糊反馈机制的机器鱼队形控制 被引量:4
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作者 单素素 纪志坚 翟海川 《智能系统学报》 CSCD 北大核心 2013年第3期247-253,共7页
在Leader-follower框架下的多机器鱼系统队形控制中,针对Leader和Follower相对独立及落后机器鱼离队等问题,在传统的Leader-follower队形控制算法中引入模糊反馈控制器进行反馈调节,使得领航机器鱼Leader能定时检查Follower的位置,将多... 在Leader-follower框架下的多机器鱼系统队形控制中,针对Leader和Follower相对独立及落后机器鱼离队等问题,在传统的Leader-follower队形控制算法中引入模糊反馈控制器进行反馈调节,使得领航机器鱼Leader能定时检查Follower的位置,将多机器鱼系统的队形控制问题转化为具有反馈调节的Follower跟踪Leader的位置和方向的问题,以增强多机器鱼队形控制的稳定性,更好地协同作业完成任务.仿真试验验证了所提出的方法能较好地实现多机器鱼系统的队形控制. 展开更多
关键词 多机器鱼系统 队形控制 Leader—follower 模糊反馈控制器 反馈调节 协同作业
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A Novel NeuMOS Source Follower Cell with High Precision
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作者 杨媛 高勇 +1 位作者 余宁梅 刘梦新 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2004年第9期1074-1078,共5页
A novel neuMOS source follower circuit is presented.The cell can complete the s ource follower function even if the input voltage is lower than the threshold of the source follower,thus high-precision operation of th... A novel neuMOS source follower circuit is presented.The cell can complete the s ource follower function even if the input voltage is lower than the threshold of the source follower,thus high-precision operation of the circuit is achieved. The simulation and the measurement results show that its precision is higher tha n that of other neuMOS source follower circuits. 展开更多
关键词 neuron MOS source follower THRESHOLD
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基于条件反馈机制Leader-follower多机器人队形控制 被引量:5
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作者 王娟 胡玉兰 《大众科技》 2008年第7期38-39,37,共3页
针对Leader-follower多机器人系统队形控制中,Leader和follower相对独立及落后机器人离队等问题,采用基于条件反馈机制的Leader-follower多机器人队形控制方法,建立基于条件反馈机制和Lead-follower相结合的多机器人队形控制模型。将多... 针对Leader-follower多机器人系统队形控制中,Leader和follower相对独立及落后机器人离队等问题,采用基于条件反馈机制的Leader-follower多机器人队形控制方法,建立基于条件反馈机制和Lead-follower相结合的多机器人队形控制模型。将多机器人系统的队形控制问题转化为基于条件反馈机制的follower跟踪leader的位置和方向的问题,通过实例仿真验证了方法的有效性。仿真结果表明所提出的方法是合理有效的,使多机器人系统能够有效地完成编队控制任务。 展开更多
关键词 条件反馈机制 Leader—follower 多机器人系统
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Analysis of 3D curve expansion of conical cam with oscillating tapered roller follower 被引量:5
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作者 CHEN Jun-hua WU Yi-jie 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2007年第11期1789-1794,共6页
This paper focuses on the analysis of running conditions and machining processes of conical cam with oscillating follower. We point out the common errors existing in the design and machining of the widely used plane e... This paper focuses on the analysis of running conditions and machining processes of conical cam with oscillating follower. We point out the common errors existing in the design and machining of the widely used plane expansion method of conical cam trough-out line. We show that the motion can be divided into two parts, i.e. the oscillating motion of oscillating bar and the rotary motion of oscillating bar relative to the conical cam. By increasing the rotary motion of oscillating bar, the motion path of tapered roller on oscillating bar (i.e. contour surface of conical cam) can be expanded on the cylinder. Based on these analyses, we present a creative and effective designing and machining method for 3D curve expansion of conical cam with oscillating follower. 展开更多
关键词 Oscillating follower Conical cam Tapered roller plane expansion 3D curve expansion
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Anti-follower jamming wide gap multi-pattern frequency hopping communication method 被引量:2
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作者 Yao-bei Wang Hou-de Quan +1 位作者 Hui-xian Sun Pei-zhang Cui 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2020年第2期453-459,共7页
This paper deals with the follower jamming(FJ)resistance for the frequency hopping(FH)communication system over additive white Gaussian noise(AWGN)channel.Conventional FH systems are susceptible to be jammed by FJ,and... This paper deals with the follower jamming(FJ)resistance for the frequency hopping(FH)communication system over additive white Gaussian noise(AWGN)channel.Conventional FH systems are susceptible to be jammed by FJ,and multi-pattern frequency hopping(MPFH)has good resistance to FJ.To further improve the FJ rejection capability of MPFH,we propose a wide gap multi-pattern frequency hopping(WGMPFH)scheme.WGMPFH uses channels to represent messages,and the data channel and complementary channel are hopping on orthogonal frequency slots according to wide gap FH patterns.The transmitted signal lures FJ to aim at the data channel and the complementary channel is away from FJ by adopting wide gap frequency patterns.FJ does not affect the complementary channel but increases the signal energy in the data channel,thus the effect of FJ is reduced.Its bit error rate(BER)is derived under FJ and the effects of three FJ parameters(tracking success probability,jamming duration ratio and jamming bandwidth ratio)on the BER performance of WGMPFH are investigated versus the co nventional FH/BFSK and MPFH system.Numerical and simulation results show that when under the worst-case FJ,the proposed WGMPFH outperforms the MPFH by about 1-3 dB and outperforms the conventional FH/BFSK by more than 4 dB.The proposed WGMPFH shows superior jamming rejection performance under FJ especially in severe signal-to-jamming ratio(SJR). 展开更多
关键词 FREQUENCY HOPPING communication Multi-pattern FREQUENCY HOPPING follower jamming AWGN channel
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Design of Cylindrical Cam with Oscillating Follower Based on 3D Expansion of Planar Profile Model 被引量:2
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作者 CHEN Junhua LIN Zuan WU Yijie 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2009年第5期665-670,共6页
Cylindrical cam with oscillating follower is widely applicable and used in many mechanical devices and machines. However, a common error exists in the methods of designing planar profile for oscillating follower cylin... Cylindrical cam with oscillating follower is widely applicable and used in many mechanical devices and machines. However, a common error exists in the methods of designing planar profile for oscillating follower cylinder cam. In this study, we propose a new hypothesis to solve this design problem with the inclusion of deviation angle. On the basis of this new concept, equations for planar profile expansion and methods of calculating pressure angle are deduced by applying 3D expansion formula of the follower's motion orbit. When the pressure angle is less than allowable value, the minimum base radius can be determined by using MATLAB software. Accordingly, the planar profile of oscillating follower cylinder cam is generated by CAD software. This new method is practical and can be easily adopted for the design of oscillating follower cylindrical cam with desirable accuracy. We applied the method in the design of cylindrical cam for paper feeding mechanism used in high-speed printers. We calculated the planar profile and used it to direct the NC machine for the manufacture of the groove of cylindrical cam. The improved cylindrical cam met all of the requirements of speed and accuracy demanded by high-speed printers. Therefore, our new method has been validated by practical application. 展开更多
关键词 oscillating follower cylindrical cam 3D expansion pressure angle radius of base circle PROFILE
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A Parallel Indexing Cam Mechanism with Internal Placed Followers 被引量:1
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作者 ZHANG Yuhua REN Guangfa (School of Mechanical Engineering,Anhui University of Technology,Ma’anshan 243002,China 《武汉理工大学学报》 CAS CSCD 北大核心 2006年第S2期533-537,共5页
A new type of parallel indexing cam mechanism is discovered.The composition of the cam profile is proposed and the formulas of the mechanism parameters are established by synthesis of its configuration and size.The eq... A new type of parallel indexing cam mechanism is discovered.The composition of the cam profile is proposed and the formulas of the mechanism parameters are established by synthesis of its configuration and size.The equations for working pro- file and pressure angle of the cam are derived based on the inverse model and the derivative of pitch curve of cams.An example is given and demonstrates that it is available to design the new mechanism using the derived expressions. 展开更多
关键词 CAM MECHANISM PARALLEL INDEXING CAM INTERNAL CAM MECHANISM synthesis INTERNAL placed followerS
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Wall Follower Autonomous Robot Development Applying Fuzzy Incremental Controller 被引量:3
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作者 Dirman Hanafi Yousef Moh Abueejela Mohamad Fauzi Zakaria 《Intelligent Control and Automation》 2013年第1期18-25,共8页
This paper presents the design of an autonomous robot as a basic development of an intelligent wheeled mobile robot for air duct or corridor cleaning. The robot navigation is based on wall following algorithm. The rob... This paper presents the design of an autonomous robot as a basic development of an intelligent wheeled mobile robot for air duct or corridor cleaning. The robot navigation is based on wall following algorithm. The robot is controlled using fuzzy incremental controller (FIC) and embedded in PIC18F4550 microcontroller. FIC guides the robot to move along a wall in a desired direction by maintaining a constant distance to the wall. Two ultrasonic sensors are installed in the left side of the robot to sense the wall distance. The signals from these sensors are fed to FIC that then used to determine the speed control of two DC motors. The robot movement is obtained through differentiating the speed of these two motors. The experimental results show that FIC is successfully controlling the robot to follow the wall as a guidance line and has good performance compare with PID controller. 展开更多
关键词 AUTONOMOUS Robot WALL follower Fuzzy INCREMENTAL CONTROLLER Embedded System
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Transverse Vibration and Stability Analysis of Circular Plate Subjected to Follower Force and Thermal Load 被引量:1
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作者 Yongqiang Yang Zhongmin Wang 《Sound & Vibration》 2019年第3期51-64,共14页
Transverse vibration and stability analysis of circular plate subjected to follower force and thermal load are analyzed.Based on the thin plate theory in involving the variable temperature,the differential equation of... Transverse vibration and stability analysis of circular plate subjected to follower force and thermal load are analyzed.Based on the thin plate theory in involving the variable temperature,the differential equation of transverse vibration for the axisymmetric circular plate subjected to follower force and thermal load is established.Then,the differential equation of vibration and corresponding boundary conditions are discretized by the differential quadrature method.Meanwhile,the generalized eigenvalue under three different boundary conditions are calculated.In this case,the change curve of the first order dimensionless complex frequency of the circular plate subjected to the follower force in the different conditions with the variable temperature coefficient and temperature load is analyzed.The stability and corresponding critical loads of the circular plate subjected to follower force and thermal load with simply supported edge,clamped edge and free edge are discussed.The results provide theoretical basis for improving the dynamic stability of the circular plate. 展开更多
关键词 Circular plate transverse vibration follower force thermal load differential quadrature method STABILITY
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Adaptive leader follower control for multiple quadrotors via multiple surfaces control
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作者 ABBAS Rabah 伍清河 《Journal of Beijing Institute of Technology》 EI CAS 2016年第4期526-532,共7页
Based on the multiple surface and fixed undirected communication topology, the adaptive leader follower contrul for multiple quadrotors is discussed. Our approach is based on leader follower architecture. Multiple sur... Based on the multiple surface and fixed undirected communication topology, the adaptive leader follower contrul for multiple quadrotors is discussed. Our approach is based on leader follower architecture. Multiple surface control (MSC) is used to design consensus controller to make multiple quadrotors construct a formation during flying with the presence of uncertainty item caused by the ground effect during landing or taking off. Simulation results are presented to validate the effectiveness of the proposed controller. 展开更多
关键词 QUADROTOR leader follower multiple surface control (MSC) unmanned aerial vehicle(UAV)
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Realization of a New Current Mode Second-Order Biquad Using Two Current Follower Transconductance Amplifiers (CFTAs)
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作者 Nisha Walde Syed Naseem Ahmad 《Circuits and Systems》 2015年第5期113-120,共8页
A new circuit for realization of universal current-mode filter using current Follower Transconductance Amplifiers (CFTAs) is presented. The proposed circuit realizes current-mode low pass, high pass and band pass filt... A new circuit for realization of universal current-mode filter using current Follower Transconductance Amplifiers (CFTAs) is presented. The proposed circuit realizes current-mode low pass, high pass and band pass filter functions simultaneously with a single current source at the input. The band reject and all pass filters can also be obtained from the proposed circuit without any extra hardware. The proposed circuit employs three passive grounded elements and two CFTAs. Linear electronic control of natural frequency ω0 is available in the proposed circuit. The quality factor can be independently adjusted through grounded resistor. The proposed circuit employs two grounded capacitors and a grounded resistor along with two CFTAs. The grounded resistor can be replaced by an OTA based circuit for linear electronic control of quality factor Q0. The circuit exhibits low active and passive sensitivities for ω0 and Q0. Simulation results are obtained using PSPICE software which is in conformity with the theoretical findings. 展开更多
关键词 CURRENT follower TRANSCONDUCTANCE Amplifier (CFTA) Current-Mode CIRCUIT Biquad Filter VOLTAGE-MODE CIRCUIT CURRENT CONVEYOR (CC)
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Design Optimization of Cam &Follower Mechanism of an Internal Combustion Engine for Improving the Engine Efficiency
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作者 Mahesh R. Mali Prabhakar D. Maskar +1 位作者 Shravan H. Gawande Jay S. Bagi 《Modern Mechanical Engineering》 2012年第3期114-119,共6页
The current cam and follower mechanism in four stroke internal combustion engine employs a flat follower. In this work an attempt is made to change the flat face of follower to a curved face follower, so that the requ... The current cam and follower mechanism in four stroke internal combustion engine employs a flat follower. In this work an attempt is made to change the flat face of follower to a curved face follower, so that the required point contact can be achieved. As line contact between existing cam and follower mechanism results in high frictional losses which results in low mechanical efficiency. It is observed that the frequency of vibration in the existing and modified cam and follower mechanism remains almost same. The finite element approach is used to perform the analysis. 展开更多
关键词 follower & CAM Point CONTACT Vibration Analysis FINITE ELEMENT Approach [FEA]
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Flipped Voltage Follower Ddesign Technique for Maximised Linear Operation
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作者 Ching-Mei Chen Khaled Hayatleh +1 位作者 Bryan Hart John Lidgey 《Engineering(科研)》 2010年第8期665-667,共3页
The results of comparative DC simulation tests confirm that a proposed modification to the feedback circuit of a Flipped Voltage Follower (FVF), to produce a type of ‘Folded’ Flipped Voltage Follower (FFVF), is capa... The results of comparative DC simulation tests confirm that a proposed modification to the feedback circuit of a Flipped Voltage Follower (FVF), to produce a type of ‘Folded’ Flipped Voltage Follower (FFVF), is capable of maximising the linear DC operating range for given values of supply rail voltage and operating current. 展开更多
关键词 ANALOG VOLTAGE follower
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Followers of the Social Media Network and National Security
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作者 Yu Chen 《International English Education Research》 2014年第9期44-46,共3页
With the social media networks development quickly, the followers of the social media network' s behaviors have taken a lot of damagers and threats to national security, and made the nation into unstable situations, ... With the social media networks development quickly, the followers of the social media network' s behaviors have taken a lot of damagers and threats to national security, and made the nation into unstable situations, even subverted the national sovereignty .This paper analyzes the characters of the followers of the social media in the Ira, Tunisia, Egypt and Libya's turmoil, concludes constructive suggestions how to ensure national stability and harmonious development, has some positive effect to our national security. 展开更多
关键词 Social Media Networks followerS National Security
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Fiction with Influence Famous martial arts novelist Louis Cha Leung-yung’s passing leaves a growing legion of followers
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作者 Pan Xiaoqiao 《ChinAfrica》 2018年第12期52-53,共2页
There was an outpouring of grief across China on October 30 when fans of legendary wuxia (master of martial arts) novelist Jin Yong heard of his passing at age 94.
关键词 In Fiction with Influence Famous martial arts novelist Louis Cha Leung-yung’s passing leaves a growing legion of followers
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Autonomous Formation Flight Control of Large-Sized Flapping-Wing Flying Robots Based on Leader–Follower Strategy 被引量:1
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作者 Hui Xu Yuanpeng Wang +2 位作者 Erzhen Pan Wenfu Xu Dong Xue 《Journal of Bionic Engineering》 SCIE EI CSCD 2023年第6期2542-2558,共17页
Birds in nature exhibit excellent long-distance flight capabilities through formation flight,which could reduce energy consumption and improve flight efficiency.Inspired by the biological habits of birds,this paper pr... Birds in nature exhibit excellent long-distance flight capabilities through formation flight,which could reduce energy consumption and improve flight efficiency.Inspired by the biological habits of birds,this paper proposes an autonomous formation flight control method for Large-sized Flapping-Wing Flying Robots(LFWFRs),which can enhance their search range and flight efficiency.First,the kinematics model for LFWFRs is established.Then,an autonomous flight controller based on this model is designed,which has multiple flight control modes,including attitude stabilization,course keeping,hovering,and so on.Second,a formation flight control method is proposed based on the leader–follower strategy and periodic characteristics of flapping-wing flight.The up and down fluctuation of the fuselage of each LFWFR during wing flapping is considered in the control algorithm to keep the relative distance,which overcomes the trajectory divergence caused by sensor delay and fuselage fluctuation.Third,typical formation flight modes are realized,including straight formation,circular formation,and switching formation.Finally,the outdoor formation flight experiment is carried out,and the proposed autonomous formation flight control method is verified in real environment. 展开更多
关键词 BIONIC Large-sized flapping-wing flying robot HIT-Phoenix Periodic flight characteristics Formation flight Leader follower strategy
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