Nonlinear interaction of head-on solitary waves in integrable and nonintegrable systems

This study numerically investigates the nonlinear interaction of head-on solitary waves in a granular chain(a nonintegrable system)and compares the simulation results with the theoretical results in fluid(an integrable system).Three stages(the pre-in-phase traveling stage,the central-collision stage,and the post-in-phase traveling stage)are identified to describe the nonlinear interaction processes in the granular chain.The nonlinear scattering effect occurs in the central-collision stage,which decreases the amplitude of the incident solitary waves.Compared with the leading-time phase in the incident and separation collision processes,the lagging-time phase in the separation collision process is smaller.This asymmetrical nonlinear collision results in an occurrence of leading phase shifts of time and space in the post-in-phase traveling stage.We next find that the solitary wave amplitude does not influence the immediate space-phase shift in the granular chain.The space-phase shift of the post-in-phase traveling stage is only determined by the measurement position rather than the wave amplitude.The results are reversed in the fluid.An increase in solitary wave amplitude leads to decreased attachment,detachment,and residence times for granular chains and fluid.For the immediate time-phase shift,leading and lagging phenomena appear in the granular chain and the fluid,respectively.These results offer new knowledge for designing mechanical metamaterials and energy-mitigating systems.

Design and Analysis of a Gain-scaling Controller Applied to a Chain of Integrator System with Measurement Noise on Feedback Sensor

A control problem of a chain of integrator system with measurement noise on feedback sensor is considered. We propose a gain-scaling controller for compensating measurement noise of feedback sensor. Because control systems operate via feedback sensor＇s signal, the measurement noise in sensor＇ signal results in performance degradation or even system failure. Therefore, control systems often demand on compensating measurement noise. Our controller is equipped with a compensator and gain-scaling factor in order to reduce the effect of measurement noise on feedback sensor.

Research on Cultural Supply Chain Integration and Invocation

Supply chain management is an integrated management method for solving these effective problems which were integrated in existing resources with the overall competitiveness and theirs effects. The supply chain integration and innovation models are proposed with the development and current situation for these global Chinese businessmen. The supply chain integration is given in order to optimize for the culture of Chinese business management. It is established that these practice network platform for supply chain management are presented service for Chinese businessmen. And they are realized these integration innovation in the logistics system, financial system, Chinese business culture system, production manufacturing system, and customer service system. These suggestions are provided for the development of Chinese business culture in supply chain theory. These further forward Chinese culture are given some fruitful reference for con- structing a new development for the world Chinese businessmen’s culture management.

Calibration chain design based on integrating sphere transfer radiometer for SI-traceable on-orbit spectral radiometric calibration and its uncertainty analysis

In order to satisfy the requirement of SI-traceable on-orbit absolute radiation calibration transfer with high accuracy for satellite remote sensors,a transfer chain consisting of a fiber coupling monochromator（FBM） and an integrating sphere transfer radiometer（ISTR） was designed in this paper.Depending on the Sun,this chain based on detectors provides precise spectral radiometric calibration and measurement to spectrometers in the reflective solar band（RSB） covering 300–2500 nm with a spectral bandwidth of 0.5–6 nm.It shortens the traditional chain based on lamp source and reduces the calibration uncertainty from 5% to 0.5% by using the cryogenic radiometer in space as a radiometric benchmark and trap detectors as secondary standard.This paper also gives a detailed uncertainty budget with reasonable distribution of each impact factor,including the weak spectral signal measurement with uncertainty of 0.28%.According to the peculiar design and comprehensive uncertainty analysis,it illustrates that the spectral radiance measurement uncertainty of the ISTR system can reach to 0.48%.The result satisfies the requirements of SI-traceable on-orbit calibration and has wider significance for expanding the application of the remote sensing data with high-quality.

Research on Integrated Green Supply Chain Management

On the basis of the analyzing product life cycle and value chain management in green supply chain,integrated green supply chain is put forward and constructed which involve lean production,agile manufacturing and green supply chain. This integrated structure provides an effective method for resolving some questions such as cost,market,environment,etc. in enterprise. A case study is presented at the end of paper to demonstrate how integrated supply chain implemented successfully in enterprise.

Calculation of the transfer integrals in Wannier representation for a planar trans-polyacetylene chain

In this paper, the electronic transfer integrals, the energy gap, and the bandwidth of a planar trans polyacetylene chain are calculated in Wannier representation, in which a combination of the wave function of hydrogen like atoms is used to stand for the Wannier function. When the effective nuclear charge number Z = 2.125 and the distortion amplitude of the carbon sites u =0.0038 nm, the nearest, next, and third neighbor hopping energies obtained are -3.224 78 eV, -2.388 61 eV, 0.148 14 eV, 0.006 65 eV, and 0.006 50 eV, respectively. The energy bandwidth and gap corresponding to these values are W d =11.19 eV and E g =1.70 eV, respectively. These results coincide with the experimental values.

Three-scale integrated optimization model of furnace simulation,cyclic scheduling,and supply chain of ethylene plants

In order to explore the potential of profit margin improvement,a novel three-scale integrated optimization model of furnace simulation,cyclic scheduling,and supply chain of ethylene plants is proposed and evaluated.A decoupling strategy is proposed for the solution of the three-scale model,which uses our previously proposed reactor scale model for operation optimization and then transfers the obtained results as a parameter table in the joint MILP optimization of plant-supply chain scale for cyclic scheduling.This optimization framework simplifies the fundamental mixed-integer nonlinear programming(MINLP)into several sub-models,and improves the interpretability and extendibility.In the evaluation of an industrial case,a profit increase at a percentage of 3.25%is attained in optimization compared to the practical operations.Further sensitivity analysis is carried out for strategy evolving study when price policy,supply chain,and production requirement parameters are varied.These results could provide useful suggestions for petrochemical enterprises on thermal cracking production.

Supply Chain Integration, a Chain of Efficient Utilization of Information Technology: Its Benefits &Challenges

Business renovation, effective utilization of information technology and the role of business process modeling are dealt in supply chain integration projects. The main idea is to show how the performance of supply chain can be improved with the integration of various tiers in the chain. Integration is preconditioned for efficient sharing and utilization of information between diverse companies in the chain.

Systematic Methodology of Integrated Supply Chain Management

Supply chain management (SCM) is a strategy for global competition. The characteristics of SCM are integration, systematic and coordination. Using systematic, coordination thoughts and integration theory, a new model of enterprise integration based on supply chain management is put forward and an implementing paradigm for systematic methodology of supply chain management is developed.

Firm Size, Innovation and Vertical Integration Incentives： The Case of Food Supply Chain

This study aims to investigate and explore the relationship between vertical integration and the firm＇s innovativeness in food supply chain. For doing so, a two-stage least-squares model was used. It encompassed instrumental variables that attempt to describe the effective determinants of firm＇s vertical integration willingness. Results based on data concerning a set of 130 food-manufacturing firms, highlighted that vertical integration of a firm is strongly affected by internal incentives such as innovation rate and firm size. Moreover, it is simultaneously influenced by the economies of scale and some structure incentives. To conclude, results indicate globally that important and statistically significant differences exist across the studied firms and the small effective ones which acquire a high level of vertical integration.

Investigating Supply Chain Integration Effects on Environmental Performance in the Jordanian Food Industry

The purpose of this study was to examine the effects of supply chain integration on environmental performance of food manufacturing companies in Jordan. Data for this study were collected from one hundred and nineteen food companies. To answer the study questions, and to verify its hypotheses, descriptive statistical tools and linear regression tests were used. The study results indicated that supply chain integration positively affected environmental performance. Additionally, the results showed that supply chain integration positively affected environmental control and pollution management.

Achieving Responsiveness through Supply Chain Integration:A Moderating Effect of Industry-4.0

This article is aiming to investigate the emerging impact of industry-4.0 on supply chain integration and responsiveness in the electronics industry in China.Specifically,it is to investigate the moderating effect of industry-4.0 as a strategic factor on the causal relationship from operational integration to supply chain responsiveness.This study develops hypotheses based the on selected literature reviews in the relevant research areas,and tests the hypotheses in the empirical sample data set collected from 76 electronics firms by using hierarchical multiple regression method.The results of this study shows that industry-4.0 as an emerging strategic factor has not only directly helped the level of market responsiveness of the firms,but also has significantly strengthens the already proven positive causal relationship from operational integration within the supply chain to the overall market responsiveness as part of supply chain performance.To improve the supply chain responsiveness in the electronics industry,managers can now make more confident and informed decisions to channel their resources towards the initiatives of industry-4.0 by up-grading perhaps their current information systems and business processes,knowing full well the dual benefits offered by the Industry 4.0 initiatives.The study extends the concurrent literature by conceptualising the moderating effect of industry-4.0 on the causal relationship between supply chain integration and business responsiveness.

Integrate SMEs into the Global Value Chain

We have talked about inclusiveness in many occasions in the SMEs taskforce working group.The starting point for our discussion is how to incorporate more people,more SMEs,morewomen and more young entrepreneurs into global economic development.SMEs shall be involved in the global trade platform along a certain value chain.If this can be achieved,

Exact surface energy and elementary excitations of the XXX spin-1/2 chain with arbitrary non-diagonal boundary fields

We study the physical properties of the XXX spin-1/2 chain with arbitrary non-diagonal boundary fields. By using a combination of numerical analysis and analytical method, we obtain the surface energy and elementary excitations of the model. It shows that the contributions of the two boundary fields to the surface energy are additive. We also find that there exists a kind of excitations related to the boundary string.

“四链”深度融合下战略性新兴产业高质量发展战略研究

推动创新链、产业链、资金链、人才链深度融合,提升产业创新能力是我国战略性新兴产业迈向全球产业链中高端,实现高质量发展的关键。本文通过系统分析战略性新兴产业高质量发展的本质要求及内涵特征,研判全球战略性新兴产业发展格局变化及趋势,分析我国战略性新兴产业发展现状、问题及挑战,提出“创新驱动、企业主体、开放融合”的战略性新兴产业高质量发展思路和“体系融合、协同发展,自主可控、开放创新,企业主体、市场机制,前瞻布局、高端引领”的发展原则,研究提出各领域重点发展方向及“系统性提升、融合式创新、市场化推动、引领性发展”的发展策略,以期为战略性新兴产业高质量发展提供参考。

“三融五链”理念下职业教育技能型人才培养路径研究

随着产业数字化转型和智能化改造的不断深入,加快培养适应新业态、新工艺和新流程的高素质技术技能型人才,成为赋能区域经济高质量发展的关键所在。为了改善职业教育在人才培养过程中的单一育人主体、校企联动不够深入、人才成长通道不畅、社会认可度不高等现实困境,以技能型人才培养为主线,以职普融通、产教融合、科教融汇的“三融”理念为契机,以推动教育链、产业链、供应链、人才链和价值链的“五链”衔接为目标,突破职业院校管理边界,构建起现代化、系统化的技能型人才培养体系。具体措施包括:以搭建产教融合多方育人框架为前提,以凝聚科教融汇一体化育人模式为载体,以健全职普融通人才成长体系为保障,以筑牢社会技能训练路径为引擎,以促进社会认同为助力,实现技能型人才培养全流程重构。逐步为区域经济提供源源不断的人力资源支撑和应用型技术积累,提升区域产业供应链韧性水平,促进区域产业攀升到价值链高端位置。

构建粮食产业链供应链一体化体系的研究

全球经济衰退和贸易供应链中断相互叠加加剧了世界粮食安全风险,尽管我国粮食安全形势总体看好,但粮食安全仍不能忽视,需要树立新时代的粮食安全战略,构建与新发展格局相适应的粮食安全观,针对我国粮食安全的主要风险,从高效推动粮食全链发展、积极谋划粮食产业链供应链安全、加大粮食产业高质量发展力度等3个方面提出有针对性地构建粮食产业链供应链一体化体系政策建议,从而确保中国人的饭碗牢牢端在自己手中。

Adaptive proportional integral differential control based on radial basis function neural network identification of a two-degree-of-freedom closed-chain robot

A closed-chain robot has several advantages over an open-chain robot, such as high mechanical rigidity, high payload, high precision. Accurate trajectory control of a robot is essential in practical-use. This paper presents an adaptive proportional integral differential （PID） control algorithm based on radial basis function （RBF） neural network for trajectory tracking of a two-degree-of-freedom （2-DOF） closed-chain robot. In this scheme, an RBF neural network is used to approximate the unknown nonlinear dynamics of the robot, at the same time, the PID parameters can be adjusted online and the high precision can be obtained. Simulation results show that the control algorithm accurately tracks a 2-DOF closed-chain robot trajectories. The results also indicate that the system robustness and tracking performance are superior to the classic PID method.

数实融合背景下平台经济优化乡村产业链的机制

促进数实融合是顺应经济高质量发展新趋势、发掘经济增长新动能的战略选择。数实融合以平台为中枢,有效整合技术与数据并在不同场景应用,实现价值增值。由平台发展衍生而来的平台经济,已经成为数字经济时代主要的经济组织形态和市场运行模式,具有典型的网络效应、普惠效应、创新效应、价值创造效应,通过提质、增效、扩容为传统产业转型升级构筑新动能。当前,我国乡村产业链面临现代生产要素缺失、产业创新驱动不足、产业链条过短、产业协同能力不足、产业链数字化综合运营能力有待提升等问题。平台经济基于自身特性,能够通过优化乡村产业链要素投入结构、打造纵向延伸与横向拓展的双向一体化,助力乡村产业链全链路数字化升级,实现对乡村产业链的补链、延链、强链作用。促进平台经济与乡村产业链深度融合、释放新发展动能是一项系统工程,需要政府、平台企业、社会多方协同,围绕乡村产业链,部署创新链,提升价值链,推动产业主体、产业结构与产业模式同步创新,以乡村产业链升级助力现代农业农村经济体系构建。

Revisiting Port Regulatory Governance & Substance: Towards a Holistic Supply Chain Approach

The evolution and integration of ports in global logistics chains has altered their traditional role while has initiated restructuring processes in many ports worldwide. While most of the research addresses this issue by highlighting the need for re-positioning and redefining the role of the port within the supply chains, not much attention has been given to the structure, scope and reach as well as to the tools of regulation hat competent authorities could exploit in order to avert potential abusive actions of global powerful actors along the containerized transport chain, that would affect the competitive functioning of distinct segment or the integrity of supply chains. In this context, we propose the reconceptualization and reinforcement of the regulatory governance structures of ports on a national and international level as well as the extension of the scope of ports’ regulations along the supply chain to counterbalance the globalization, consolidation and integration of containerized transport actors.