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An integrated assessment of technological pathways and socioeconomic impacts for sustainable power system transition in Indonesia

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Advances in Climate Change Research 2024年第6期15卷 1107-1120页

作者： Widodo Wahyu PURWANTO Djoni HARTONO Akhmad Herman YUNOWO Heri HERMAANSYAH Nadhilah REYSELIANI Ahmad SYAUQI Rosa Citra APRILIA Sustainable Energy Systems and Policy Research Cluster Universitas IndonesiaDepok 16424Indonesia Department of Chemical Engineering Faculty of EngineeringUniversitas IndonesiaDepok 16424Indonesia Department of Economics Faculty of Economics and BusinessUniversitas IndonesiaDepok 16424Indonesia Institute for Energy Transition Faculty of EngineeringUniversitas IndonesiaDepok 16424Indonesia Department of Metallurgical and Materials Engineering Faculty of EngineeringUniversitas IndonesiaDepok 16424Indonesia

The energy transition has unique and profound socioeconomic impacts for the developing and coal-producing countries,due to the distinctive country's *** overall development context and challenges comprising technological pathways,investment,value added,employment and inequality must be *** the case of Indonesia,as one of the world's largest coal-producing,the archipelagic nature with various island topography,sociocultural diversity as well as very high population really needs a comprehensive energy transition research considering the above aspects,which is so far still ***,this current study presents an integrated assessment of technological change and socioeconomics impact for power transition pathways in Indonesia using the Integrated MARKAL-EFOM System(TIMES)and their socioeconomics implications using the Miyazawa Input–Output Model(MIOM).Four scenarios were applied namely business-as-usual(BAU),100%renewable energy(100%RE),Paris Agreement 1.5℃ without coal phase-out(PA1.5),and that of with coal phase-out(PA1.5PO).The results show that by 2060,100%RE without applying carbon capture and storage(CCS)creates an extreme power flexibility which requires ample energy storage but does not attain *** meet the 1.5℃ carbon budget,PA1.5 and PA1.5PO require substantial renewable energy deployment,particularly in utility-scale solar PV,energy storage,and low-carbon *** two scenarios exhibit a notable increase in total installed capacity,ranging 3.37–3.83 times higher than the BAU ***1.5PO,plays an increasing role natural gas as bridge fuel in advanced gas power from 2035 to its peak in *** scenarios require a higher installed capacity compared to BAU,corresponding to a substantial total investment cost of almost 2.5 times in *** MIOM results show that these scenarios have a stronger impact on household income and employment compared to ***,the impact on value added(VA)only surpasses BAU

关键词： Energy transition Power sector TIMES model Socioeconomic impacts Miyazawa input-output model Indonesia

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engineering Shewanella-re duce d graphene oxide aerogel biohybrid to efficiently synthesize Au nanoparticles

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Journal of Materials Science & Technology 2024年第1期168卷 50-61页

作者： Baocai Zhang Shulin Shao Huan Yu Qijing Liu Sicheng Shi Qingyuan Wu Zijie Wu Yiyu Feng Yifei Wang Xi Sun Deguang Wu Feng Li Hao Song Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering(Ministry of Education) Tianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China School of Materials Science and Engineering Tianjin UniversityTianjin 300350China College of Biological Engineering Tianjin Agricultural UniversityTianjin 300384China Department of Brewing Engineering Moutai InstituteLuban AveRenhuai 564507China

Biosynthesizing Au nanoparticles(AuNPs)from gold-bearing scraps provides a sustainable method to meet the urgent demand for ***,it remains challenging to efficiently biosynthesize AuNPs of which the diameter is less than 10 nm from a trace amount of Au^(3+)concentration at the level of tens ***,we constructed an exoelectrogenic cell(eCell)-conductive reduced-graphene-oxide aero-gel(rGA)biohybrid by assembling Shewanella sp.S1(SS1)as living biocatalyst and rGA as conductive ad-sorbent,in which Au^(3+)at trace concentrations would be enriched by the adsorption of rGA and reduced to AuNPs through the extracellular electron transfer(EET)of *** regulate the size of the synthe-sized AuNPs to 10 nm,the strain SS1 was engineered to enhance its EET,resulting in strain RS2(pYYD-P tac-ribADEHC&pHG13-P_(bad)-omcC in SS1).Strain RS2 was further assembled with rGA to construct the RS2-rGA biohybrid,which could synthesize AuNPs with the size of 7.62±2.82 nm from 60 ppm Au^(3+)*** eCell-rGA biohybrid integrated Au^(3+)adsorption and reduction,which enabled AuNPs biosyn-thesis from a trace amount of Au^(3+).Thus,the required Au^(3+)ions concentration was reduced by one or two orders of magnitude compared with conventional methods of AuNPs *** work devel-oped an AuNPs size regulation technology via engineering eCell’s EET with synthetic biology methods,providing a feasible approach to synthesize AuNPs with controllable size from trace level of gold ions.

关键词： Au nanoparticles Exoelectrogenic cell(e-Cell) Shewanella Synthesis biology Extracellular electron transfer Reduced graphene oxide aerogel

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Resilient Event-Triggered Model Predictive Control for Adaptive Cruise Control Under Sensor Attacks

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IEEE/CAA Journal of Automatica Sinica 2023年第3期10卷 807-809页

作者： Zhijian Hu Rong Su Kai Zhang Zeyuan Xu Renjie Ma School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Key Laboratory of Ultra-Precision Intelligent Instrumentation Ministry of Industry and Information Technologyand the Center of Ultra-Precision Optoelectronic Instrument EngineeringHarbin Institute of TechnologyHarbin 150001China Department of Control Science and Engineering Harbin Institute of TechnologyHarbin 150001China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore State Key Laboratory of Robotics and Systems Harbin Institute of TechnologyHarbin 150001China IEEE

Dear Editor,This letter addresses the resilient model predictive control(MPC)problems for adaptive cruise control(ACC)systems under sensor *** the light of vulnerabilities of ACC systems to sensor attacks,an intrusion detection mechanism is proposed at the controller side to distinguish abnormal ***,the robust control gains are derived to design the terminal region constraint for MPC.

关键词： Trigger Event constraint

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The Journey/DAO/TAO of Embodied Intelligence: From Large Models to Foundation Intelligence and Parallel Intelligence

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1313-1316页

作者： Tianyu Shen Jinlin Sun Shihan Kong Yutong Wang Juanjuan Li Xuan Li Fei-Yue Wang College of Information Science and Technology Beijing University of Chemical TechnologyBeijing 100029China School of Electrical and Information Engineering Jiangsu UniversityZhenjiang 212013China State Key Laboratory for Turbulence and Complex Systems Department of Advanced Manufacturing and RoboticsCollege of EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China Peng Cheng Laboratory Shenzhen 518000China State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190 Faculty of Innovation Engineering Macao University of Science and TechnologyMacao 999078China IEEE

THE tremendous impact of large models represented by ChatGPT[1]-[3]makes it necessary to con-sider the practical applications of such models[4].However,for an artificial intelligence(AI)to truly evolve,it needs to possess a physical“body”to transition from the virtual world to the real world and evolve through interaction with the real *** this context,“embodied intelligence”has sparked a new wave of research and technology,leading AI beyond the digital realm into a new paradigm that can actively act and perceive in a physical environment through tangible entities such as robots and automated devices[5].

关键词： Intelligence DAO TAO

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A practical PID variable stiffness control and its enhancement for compliant force-tracking interactions with unknown environments

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Science China(Technological Sciences) 2023年第10期66卷 2882-2896页

作者： ZHANG Xin ZHOU Hao LIU JinGuo JU ZhaoJie LENG YuQuan YANG ChenGuang State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China University of Chinese Academy of Sciences Beijing 100049China School of Computing University of PortsmouthPortsmouth PO13HEUK Shenzhen Key Laboratory of Biomimetic Robotics and Intelligent Systems Department of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhen 518055China Key Laboratory of Autonomous Systems and Networked Control College of Automation Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Compliant interaction control is a key technology for robots performing contact-rich manipulation *** design of the compliant controller needs to consider the robot hardware because complex control algorithms may not be compatible with the hardware performance,especially for some industrial robots with low bandwidth *** paper focuses on effective and easy-to-use compliant control algorithms for position/velocity-controlled *** by human arm stiffness adaptation behavior,a novel variable target stiffness(NVTS)admittance control strategy is proposed for adaptive force tracking,in which a proportional integral derivative(PID)variable stiffness law is designed to update the stiffness coefficient of the admittance function by the force and position ***,its stability and force-tracking capability are theoretically *** addition,an impact compensator(Impc)is integrated into the NVTS controller to enhance its disturbance-suppression capability when the robot is subjected to strong vibration disturbances in complicated surface polishing *** proposed controllers are validated through four groups of experimental tests using different robots and the corresponding results demonstrate that they have high-accuracy tracking capability and strong adaptability in unknown environments.

关键词： compliant interaction control force tracking PID variable stiffness impact compensator unknown environments

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Process simulation and exergy analysis of fermentative hydrogen and methane production

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International Journal of Hydrogen Energy 2025年 138卷 1336-1346页

作者： Peng, Yangyang Chen, Cheng Xia, Ao Huang, Yun Zhu, Xianqing Show, Pau-Loke Zhu, Xun Liao, Qiang Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University Ministry of Education Chongqing400044 China Institute of Engineering Thermophysics School of Energy and Power Engineering Chongqing University Chongqing400044 China Department of Chemical & Petroleum Engineering Khalifa University PO Box 127788 Abu Dhabi United Arab Emirates Department of Chemical and Environment Engineering Faculty of Science and Engineering University of Nottingham Malaysia Jalan Broga Semenyih43500 Malaysia

The biogas production process involves a variety of biochemical reactions, which complicates the assessment of thermodynamic performance and the enhancement of process performance. In this study, simulations of the anaerobic digestion processes were carried out to explore the effects of organic loading rate (OLR) and hydraulic retention time (HRT) on biogas production performance. The thermodynamic performance of a conventional single-stage anaerobic digestion and a two-stage anaerobic digestion separating the hydrogen and methane production stages was also evaluated. The results showed that when OLR increased from 1.0 kg volatile solids (VS)/(m3·d) to 3.0 kg VS/(m3·d), the biogas yield increased slightly from 268.46 L/kg VS and then decreased by 17.41% to 221.72 L/kg VS. When HRT extended from 4 d to 20 d, the corresponding biogas yield increased by 28.38% (from 230.88 L/kg VS to 296.41 L/kg VS). The exergy efficiencies of single-stage and two-stage anaerobic digestion were 34.39% and 53.13%, respectively. Compared to the digestion unit in the single-stage system, the input exergy decreased by 3.09%, while the output exergy increased by 48.78% in the two-stage system. It mainly resulted from the enhancement of the exergy efficiency of the digestion unit from 35.58% to 54.63%. In particular, the biogas slurry and residue caused significant exergy losses. It accounted for 47.08% of the total input exergy of the single-stage system and 25.84% of that of the two-stage system, respectively. The utilization of these wastes can play an essential role in the further improvement of the exergy efficiency of anaerobic digestion. © 2024 Hydrogen Energy Publications LLC

关键词： Exergy

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Locomotion Analysis of a Modular Underactuated Snake-like Robot

Locomotion Analysis of a Modular Underactuated Snake-like Ro...

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2024 IEEE International Conference on Real-Time Computing and robotics, RCAR 2024

作者： Ma, Zhenxuan Zhang, Jun Cao, Yiming Liu, Zaiyang Tian, Yang Li, Longchuan Ma, Shugen Wang, Zhongkui Ritsumeikan University Graduate School of Science and Engineering Kusatsu Shiga525-8577 Japan Ritsumeikan University Department of Robotics Kusatsu Shiga525-8577 Japan Beijing University of Chemical Technology College of Information Science and Technology Beijing China Robotics & Autonomous Systems Thrust Systems Hub Guangzhou511453 China

ISBN: (纸本)9798350372601

The exploration of snake locomotion has significantly informed the field of robotics, especially in the development of robots capable of navigating complex terrains. While most robotic designs traditionally rely on the assumption of uniform force distribution for movement, the nuanced agility of snakes suggests a more selective application of force across specific joints. This paper introduces a novel underactuated snake-like robot, drawing inspiration from the adaptive locomotion strategies observed in desert snakes. We propose a modular design, incorporating joints with varying functionalities, to enhance the robot's adaptability to diverse environmental challenges. Through simulation and experimentation on flat and inclined surfaces, we validate the effectiveness of this modular design in improving locomotive efficiency. © 2024 IEEE.

关键词： Machine design

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Hydrogen-based direct reduction of industrial iron ore pellets:Statistically designed experiments and computational simulation

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International Journal of Minerals,Metallurgy and Materials 2022年第10期29卷 1908-1921页

作者： Patrícia Metolina Tiago Ramos Ribeiro Roberto Guardani Chemical Systems Engineering Center Department of Chemical EngineeringUniversity of São PauloSão Paulo 05508-900Brazil Metallurgical Process Laboratory Institute of Technological ResearchSão Paulo 05508-901Brazil

As part of efforts to reduce anthropogenic CO_(2) emissions by the steelmaking industry,this study investigated the direct reduction of industrially produced hematite pellets with H_(2) using the Doehlert experimental design to evaluate the effect of pellet diameter(10.5-16.5 mm),porosity(0.36-0.44),and temperature(600-1200℃).A strong interactive effect between temperature and pellet size was observed,indicating that these variables cannot be considered *** increase in temperature and decrease in pellet size considerably favor the reduction rate,while porosity did not show a relevant *** change in pellet size during the reduction was negligible,except at elevated temperatures due to crack formation.A considerable decrease in mechanical strength at high temperatures suggests a maximum process operating temperature of 900℃.Good predictive capacity was achieved using the modified grain model to simulate the three consecutive non-catalytic gas-solid reactions,considering different pellet sizes and porosities,changes during the reaction from 800 to 900℃.However,for other temperatures,different mechanisms of structural modifications must be considered in the *** results represent significant contributions to the development of ore pellets for CO_(2)-free steelmaking technology.

关键词： hydrogen use non-catalytic gas-solid reaction grain model porous hematite pellet CO_(2)emissions reduction Doehlert experimental design

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Effect of Layer Thickness on Marginal Gap of Zirconia Crowns Manufactured Using Additive Manufacturing with Top-Down Approach

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Korean Journal of chemical engineering 2025年第5期42卷 1143-1147页

作者： Lee, Sang-Kyu Park, Chan Jo, Kwang-Ho Choi, Sang-Hyun Lee, Hyein Jang, Kyoung-Jun Yu, Taekyung Department of Chemical Engineering College of Engineering Integrated Engineering Major Kyung Hee University Yongin17140 Korea Republic of Research Institute 3D Controls Co Busan46721 Korea Republic of Department of Prosthodontics School of Dentistry Chonnam National University Gwangju61186 Korea Republic of School of Robotics and Automation Engineering Dongyang Mirae University Seoul08221 Korea Republic of

For efficient 3D printing, fast printing (thick print layers) is necessary;however, in ceramic 3D printing, which involves printing heavy materials, changes in print speed can significantly affect precision. This study compares and analyzes the marginal fit of zirconia crowns produced with different layer thicknesses using a top-down additive manufacturing process. The results for a layer thickness of 50 μm showed lower fit in areas opposite the support compared to the results for layer thicknesses of 10 and 25 μm. It is believed that during very fast printing, the load applied during printing cannot be sustained. These findings can be used as important information for future printing of zirconia prostheses. © The Author(s), under exclusive licence to Korean institute of chemical Engineers, Seoul, Korea 2025.

关键词： Ceramic materials

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Designing Unpowered Shoulder Complex Exoskeleton via Contralateral Drive for Self-rehabilitation of Post-stroke Hemiparesis

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Journal of Bionic engineering 2023年第3期20卷 992-1007页

作者： Ning Li Tie Yang Yang Yang Wenyuan Chen Peng Yu Chuang Zhang Ning Xi Ying Zhao Wenxue Wang State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang110169China University of Chinese Academy of Sciences Beijing100049China Emerging Technologies Institute Department of Industrial and Manufacturing Systems EngineeringUniversity of Hong KongPokfulamHong Kong999077China Department of General Surgery Shengjing Hospital of China Medical UniversityShenyang110004China

Rehabilitation using exoskeleton robots can effectively remediate dysfunction and restore post-stroke survivors’ physical ability. However, low kinematic compatibility and poor self-participation of post-stroke patients in rehabilitation restrict the outcomes of exoskeleton-based therapy. The study presents an Unpowered Shoulder Complex Exoskeleton (USCE), consisting of Shoulder Girdle Mechanism (SGM), Ball-and-Socket Joint Mechanism (BSM), Gravity Compensating Mechanism (GCM) and Adjustable Alignment Design (AAD), to achieve self-rehabilitation of shoulder via energy transfer from the healthy upper limb to the affected counterpart of post-stroke hemiplegic patients. The SGM and AAD are designed to improve the kinematic compatibility by compensating for displacements of the glenohumeral joint with the adaptable size of USCE for different wearers. The BSM and GCM can transfer the body movement and energy from the healthy half of the body to the affected side without external energy input and enhance the self-participation with sick posture correction. The experimental results show that the USCE can provide high kinematic compatibility with 90.9% movement similarity between human and exoskeleton. Meanwhile, the motion ability of a post-stroke patient’s affected limb can be increased through energy transfer. It is expected that USCE can improve outcomes of home-based self-rehabilitation.

关键词： Unpowered exoskeleton Health-paralysis combination Energy transfer Self-rehabilitation Shoulder mechanism design

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