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Intelligent negotiation model for ubiquitous group decision scenarios Project supported by

João CARNEIRO,Diogo MARTINHO,Goreti MARREIROS,Paulo NOVAIS

《信息与电子工程前沿（英文）》 2016年第17卷第4期页码 296-308 doi: 10.1631/FITEE.1500344

摘要： Supporting group decision-making in ubiquitous contexts is a complex task that must deal with a large amount of factors to succeed. Here we propose an approach for an intelligent negotiation model to support the group decision-making process specifically designed for ubiquitous contexts. Our approach can be used by researchers that intend to include arguments, complex algorithms, and agents’ modeling in a negotiation model. It uses a social networking logic due to the type of communication employed by the agents and it intends to support the ubiquitous group decision-making process in a similar way to the real process, which simultaneously preserves the amount and quality of intelligence generated in face-to-face meetings. We propose a new look into this problem by considering and defining strategies to deal with important points such as the type of attributes in the multicriterion problems, agents’ reasoning, and intelligent dialogues.

关键词： Group decision support systems Ubiquitous computing Automatic negotiation Social networks Multi-agent systems

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Sagittal SLIP-anchored task space control for a monopode robot traversing irregular terrain

Haitao YU, Haibo GAO, Liang DING, Zongquan DENG

《机械工程前沿（英文）》 2020年第15卷第2期页码 193-208 doi: 10.1007/s11465-019-0569-3

摘要： As a well-explored template that captures the essential dynamical behaviors of legged locomotion on sagittal plane, the spring-loaded inverted pendulum (SLIP) model has been extensively employed in both biomechanical study and robotics research. Aiming at fully leveraging the merits of the SLIP model to generate the adaptive trajectories of the center of mass (CoM) with maneuverability, this study presents a novel two-layered sagittal SLIP-anchored (SSA) task space control for a monopode robot to deal with terrain irregularity. This work begins with an analytical investigation of sagittal SLIP dynamics by deriving an approximate solution with satisfactory apex prediction accuracy, and a two-layered SSA task space controller is subsequently developed for the monopode robot. The higher layer employs an analytical approximate representation of the sagittal SLIP model to form a deadbeat controller, which generates an adaptive reference trajectory for the CoM. The lower layer enforces the monopode robot to reproduce a generated CoM movement by using a task space controller to transfer the reference CoM commands into joint torques of the multi-degree of freedom monopode robot. Consequently, an adaptive hopping behavior is exhibited by the robot when traversing irregular terrain. Simulation results have demonstrated the effectiveness of the proposed method.

关键词： legged robots spring-loaded inverted pendulum task space control apex return map deadbeat control irregular terrain negotiation

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MAS-based production scheduling system for manufacturing cell-based workshop

CHU Hong-yan, CAO Quan-jun, FEI Ren-yuan

《机械工程前沿（英文）》 2006年第1卷第4期页码 375-380 doi: 10.1007/s11465-006-0043-x

摘要： The task of production scheduling is to determine the detailed machining path, time, machine tool, etc., for every work piece, according to the production objective and constraints. It is also an important part of the manufacturing system. In this paper, the manufacturing cell-based workshop is described and its scheduling system structure is established based on MAS (multi-agent system) technology. Through the negotiation and communication of each agent, the machining path is determined and the machining sequence and start time are calculated by GA (genetics algorithm). The communication among agents uses the CORBA (common object request broker architecture) technology of the OMG (Object Management Group). The CORBA-based architecture of the communication is designed and some interfaces for the communication are listed. For the genetics algorithm, chromosome coding, fitness function, parameters selection, and the basic genetics operation including selection, crossover and aberrance, are described. The scheduling system also can deal with some abnormal conditions, such as machine tool failure and urgent tasks. Finally, two scheduling examples are given.

关键词： negotiation selection multi-agent communication abnormal

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全球2℃温升目标与应对气候变化长期目标的演进

高云, 高翔, 张晓华

《工程（英文）》 2017年第3卷第2期页码 272-278 doi: 10.1016/J.ENG.2017.01.022

摘要：

《巴黎协定》提出把全球平均地表气温升幅控制在较工业化前水平的2°C 之内，并努力限制在1.5°C之内。这是第一个使“全球2°C 温升目标”具备法律效力的国际条约，《联合国气候变化框架公约》第二条关于最终目标的定性表述，至此演进为《巴黎协定》第二条包含具体数值的全球温升目标。从政府间气候变化专门委员会(IPCC) 第二次评估开始，为《联合国气候变化框架公约》谈判提供有助于确定定量化长期目标的科学信息就成为后续历次评估的重要任务，但由于涉及非科学评估范畴的价值判断，IPCC 从未从科学上认定全球升温到何种程度是不可接受的。应对气候变化长期目标的确定经历了长期的过程，“全球2°C 温升目标”是建立在科学评估基础上的一个政治共识。本文从“全球2°C 温升目标”的由来、IPCC 围绕《联合国气候变化框架公约》第二条开展的系列评估，以及不同政治层面对温升目标的推动等几个方面，分析了国际应对气候变化长期目标的演进过程，及其对未来科学评估、谈判进程和全球低碳发展走向的影响。

关键词：气候变化国际谈判政府间气候变化专门委员会(IPCC) 《联合国气候变化框架公约》(UNFCCC) 长期目标关键脆弱性制度建设