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Foreword

Foreword

第十九届中国控制会议

作者： k．l．mak The University of Hong kong Professor

＜正＞The year 2000 marks a new phase in the world’s development, as it does also for the Chinese Control Conference. This year, as we celebrate the new millennium, the 19th Chinese Control Conference is being held i...

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A Control Model for Automated Assembly Systems with a Multi-agent Architecture

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A Control Model for Automated Assembly Systems with a Multi-...

第十九届中国控制会议

作者： H．Y．k．lau k．l．mak I．S．k．lee Department of Industrial and Manufacturing Systems Engineering The University of Hong KongPokfulamHong Kong Department of Industrial and Manufacturing Systems Engineering The University of Hong KongPokfulamHong Kong Department of Industrial and Manufacturing Systems Engineering The University of Hong KongPokfulamHong Kong

＜正＞A multi-agent architecture is proposed to model assembly systems. Under this paradigm every workcell within an assembly system is modeled as an agent with the same abstract architecture. This architecture follows a layered approach in which the lowest level models the most primitive actions of the workcell. Another layer is added on top of it to control its primitive actions so as to achieve a goal, which in turn is generated by yet another layer. Each agent is incorporated into it a top most co-operative layer through which the communication and co-ordination among agents are modeled. In pursuing this approach, each agent is capable of controlling and planning its local actions in order to fulfill the goal generated by the co-operative layer. Therefore, a tremendous amount of workload associated with planning, error detection, diagnosis and recovery is distributed to the local agent.

关键词： Manufacturing systems agent architecture multi-agent system system modeling

A Stochastic Model for the Control of Intelligent Assembly Robots

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A Stochastic Model for the Control of Intelligent Assembly R...

第十九届中国控制会议

作者： k．l．mak H．Y．k．lau M．C．C．Ngan Department of Industrial and Manufacturing Systems Engineering The University of Hong kong Pokfulam RoadHong Kong Department of Industrial and Manufacturing Systems Engineering The University of Hong kong Pokfulam RoadHong Kong Department of Industrial and Manufacturing Systems Engineering The University of Hong kong Pokfulam RoadHong Kong

＜正＞The topic of automated assembly is widely addressed by the robotics communities. However, so far there is no systematic framework to assist the construction of an intelligent robot control system. Even systems so called intelligent systems are not truly intelligent when they are compared to human. It is therefore essential to define and analyse the necessary intelligence criteria that an intelligent robot should posses. Such criteria are then implemented on an appropriate control platform so as to enhance the intelligence of the robot. As such, one of the principal aims of this paper is to discuss and identify the criteria of machine intelligence that are central to achieving an intelligent robot. With these criteria as basis, the paper then presents an intelligent framework that is based on the stochastic hidden Markov model （HMM）. This framework consists of a number of functional blocks for the design and implementation of an intelligent robot control system. Each functional block is responsible for a corresponding feature with specific intelligent capabilities. The paper starts with a review of the applications of HMM in automated assembly, which is followed by the description of the main features and architecture of the proposed framework.

关键词： Hidden Markov models intelligent robots control systems architecture force control

Cool white light and tunable multicolor emission from Tb^(3+)/Dy^(3+)co-activated glasses under different excitations for WlEDs

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Journal of Rare Earths 2024年第1期42卷 46-56,I0002页

作者： l.Vijayalakshmi k.Naveen kumar Jong Dae Baek Department of Automotive Engineering Yeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea Department of Mechanical Engineering Yeungnam UniversityGyeongsan38541Republic of Korea

A set of co-doped(Tb^(3+)/Dy^(3+))lithium zinc borate(lZB)glasses were developed by melt *** structural evaluation was performed for synthesized glassy *** Dy^(3+)and Tb^(3+)individually doped glasses exhibit intense yellow and green luminescence bands at 575 nm(^(4)F_(9/2)→^(6)H_(13/2))and543 nm(^(5)D_(4)→^(7)F_(5)),*** sensitization effect of Dy^(3+)on Tb^(3+)was analyzed by increasing the Tb^(3+)content with respect to the optimum Dy^(3+)content(0.5 mol%)in Dy^(3+)/Tb^(3+).The spectral overlay of Dy^(3+)luminescence and Tb^(3+)absorption profiles,Dy^(3+)/Tb^(3+)Pl spectra under different excitations 352,362,376,and 385 nm,shortening decay lifetimes of Dy^(3+)in Dy^(3+)/Tb^(3+)co-activated glasses,energy transfer(ET)parameters,chromaticity coordinates and their corresponding correlated temperatures all help to explain ET from Dy^(3+)to Tb^(3+).At 385 nm of Dy^(3+)excitation,the optimized co-activated(0.5Dy^(3+)+1.0Tb^(3+)):lZB glass displays cool white light *** non-radiative ET from Dy^(3+)to Tb^(3+)is dominated by electric dipole-dipole interaction and its ET efficiency was calculated to be 63%.At the same time,reverse ET from Tb^(3+)to Dy^(3+)was also *** shift in color coordinates from dominant yellow to greenish-yellow,green and white light emission suggests that Dy^(3+)/Tb^(3+)coactivated lZB glasses can be a potential candidate for UV converted multicolor and white light emitting devices.

关键词： Rare earths Photoluminescence Energy transfer Spectral overlap Decay lifetime Multicolor emitting lEDs

Use of donepezil for neurocognitive recovery after brain injury in adult and pediatric populations:a scoping review

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Neural Regeneration Research 2024年第8期19卷 1686-1695页

作者： Avery l.Miller Nathan k.Evanson J.Michael Taylor University of Cincinnati College of Medicine CincinnatiOHUSA Department of Pediatrics University of CincinnatiCincinnatiOHUSA Department of Neurology and Rehabilitation Medicine University of CincinnatiCincinnatiOHUSA Division of Pediatric Rehabilitation Medicine Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA Division of Neurology Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA

There are few pharmacologic options for the treatment of cognitive deficits associated with traumatic brain injury in pediatric *** inhibitors such as donepezil have been evaluated in adult patients after traumatic brain injury,but relatively less is known about the effect in pediatric *** goal of this review is to identify knowledge gaps in the efficacy and safety of acetylcholinesterase inhibito rs as a potential a djuvant treatment fo r neurocognitive decline in pediatric patients with traumatic brain *** queried PubMed to identify literature published from database inception thro ugh June 2023 desc ribing the use of donepezil in young adult traumatic brain injury and pediatric patients with predefined *** on preselected search criteria,340 unique papers we re selected for title and abstra ct ***-two reco rds were reviewed in full after eliminating preclinical studies and pape rs outside the scope of the *** adult traumatic brain injury,we review results from 14 papers detailing 227 subjects where evidence suggests donepezil is well tole rated and shows both objective and patient-reported efficacy for reducing cognitive *** children,3 pape rs report on 5 children recovering from traumatic brain injury,showing limited *** additional 15 pediatric studies conducted in populations at risk for cognitive dysfunction provide a broader look at safety and efficacy in 210 patients in the pediatric age *** its promise for efficacy in adults with traumatic brain injury and tole rability in pediatric patients,we believe further study of donepezil for children and adolescents with traumatic brain injury is warranted.

关键词： acetylcholinesterase inhibitor adult cognition donepezil pediatrics traumatic brain injury

Effect of cylinder wall parameters on the final packing density of mono-disperse spheres subject to three-dimensional vibrations Author links open overlay panel

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Particuology 2024年第8期91卷 211-225页

作者： Jack R.Grogan Andrei l.Nicuşan Christopher R.k.Windows-Yule School of Chemical Engineering The University of BirminghamEdgbastonBirminghamB152TTUK

Achieving densely packed particles is desirable within the industries of ceramics,pharmaceuticals,defence and additive *** this work,we use the discrete element method(DEM)to determine the effect of wall parameters on the final packing density of mono-disperse spheres subject to 4 varying three-dimensional vibration and fill *** focus specifically on the impact of the container wall parameters on the particles'final packing *** on from the validation of the DEM simulation the particle-wall coefficient of restitution,the particle-wall coefficient of rolling friction and the particle-wall coefficient of sliding friction were varied individually and the effect on the final packing density *** relatively low particle-particle friction glass beads,the effect of these wall properties had no discernible effect on the final packing density *** on from these findings the particle-wall properties were varied at the extreme values of particle-particle coefficient of rolling friction and particle-particle coefficient of sliding *** a particle-particle coefficient of sliding friction=1,increases in particle-wall coefficient of restitution resulted in a minor increase in the final packing density of particles though this was not statistically *** a particle-particle coefficient of sliding friction=1,increases in particle-wall coefficient of rolling friction resulted in a minor decrease in the final packing density of the particles though again not to a degree where the trend can,with complete certainty,be distinguished from the random error across the ***,when the particle-particle coefficient of sliding friction=1,increases in particle-wall coefficient of sliding friction resulted in a significant decrease in the final packing density of *** decrease was attributed to the propagation of force chains throughout the *** significant decrease in final packing density with

关键词： Vibropacking Packing Densification Vibration Discrete element method Friction Wall friction Restitution

SARS-CoV-2 and innate immunity:the good,the bad,and the"goldilocks"

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Cellular & Molecular Immunology 2024年第2期21卷 171-183页

作者： Benjamin l.Sievers Mark T.k.Cheng kata Csiba Bo Meng Ravindra k.Gupta Department of Medicine University of CambridgeCambridgeUK Cambridge Institute of Therapeutic Immunology&Infectious Disease(CITID) Department of MedicineUniversity of CambridgeCambridgeUk

An ancient conflict between hosts and pathogens has driven the innate and adaptive arms of *** about this interplay can not only help us identify biological mechanisms but also reveal pathogen vulnerabilities that can be leveraged *** humoral response to SARS-CoV-2 infection has been the focus of intense research,and the role of the innate immune system has received significantly less ***,we review current knowledge of the innate immune response to SARS-CoV-2 infection and the various means SARS-CoV-2 employs to evade innate defense *** also consider the role of innate immunity in SARS-CoV-2 vaccines and in the phenomenon of long COVID.

关键词： SARS-CoV-2 Innate immune response Interferon Cytokines Inflammation Antiviral targets

Quantifying foliar trait variation and covariation in sun and shade leaves using leaf spectroscopy in eastern North America

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Forest Ecosystems 2024年第5期11卷 728-742页

作者： Zhihui Wang Philip A.Townsend Eric l.kruger Anna k.Schweiger Guangdong Provincial key laboratory of Remote Sensing and Geographical Information System Guangdong Open Laboratory of Geospatial Information Technology and ApplicationGuangzhou Institute of GeographyGuangdong Academy of SciencesGuangzhou510070China Department of Forest and Wildlife Ecology University of Wisconsin-Madison1630 Linden DriveMadisonWI53706USA Department of land Resources and Environmental Sciences Montana State University334 Leon Johnson HallBozemanMT59717USA

Characterizing foliar trait variation in sun and shade leaves can provide insights into inter-and intra-species resource use strategies and plant response to environmental ***,datasets with records of multiple foliar traits from the same individual and including shade leaves are sparse,which limits our ability to investigate trait-trait,trait-environment relationships and trait coordination in both sun and shade *** presented a comprehensive dataset of 15 foliar traits from sun and shade leaves sampled with leaf spectroscopy,including 424 individuals of 110 plant species from 19 sites across eastern North *** investigated trait variation,covariation,scaling relationships with leaf mass,and the effects of environment,canopy position,and taxonomy on trait ***,sun leaves had higher leaf mass per area,nonstructural carbohydrates and total phenolics,lower mass-based chlorophyll a+b,carotenoids,phosphorus,and potassium,but exhibited species-specific *** between sun and shade leaf traits,and trait-environment relationships were overall consistent across *** main dimensions of foliar trait variation in seed plants were revealed including leaf economics traits,photosynthetic pigments,defense,and structural *** and canopy position collectively explained most of the foliar trait *** study highlights the importance of including intra-individual and intra-specific trait variation to improve our understanding of ecosystem *** findings have implications for efficient field sampling,and trait mapping with remote sensing.

关键词： Foliar traits leaf trait variation Trait-environment covariation Shade leaves NEON leaf spectroscopy

Pancreatic surgery and tertiary pancreatitis services warrant provision for support from a specialist diabetes team

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World Journal of Diabetes 2024年第4期15卷 598-605页

作者： Vasileios k Mavroeidis Jennifer knapton Francesca Saffioti Daniel l Morganstein Department of HPB Surgery Bristol Royal InfirmaryUniversity Hospitals Bristol and Weston NHS Foundation TrustBristol BS28HWUnited Kingdom Department of Gastrointestinal Surgery Southmead HospitalNorth Bristol NHS TrustBristol BS105NBUnited Kingdom Department of Academic Surgery Royal Marsden NHS Foundation TrustLondon SW36JJUnited Kingdom Department of Gastroenterology and Hepatology Oxford University Hospitals NHS Foundation TrustOxford OX39DUUnited Kingdom UCl Institute for liver and Digestive Health University College LondonLondon NW32PFUnited Kingdom Department of Endocrinology Chelsea and Westminster Hospital NHS Foundation TrustLondon SW109NHUnited Kingdom Department of Gastrointestinal Unit Royal Marsden NHS Foundation TrustLondon SW36JJUnited Kingdom

Pancreatic surgery units undertake several complex operations,albeit with consi-derable morbidity and mortality,as is the case for the management of complicated acute pancreatitis or chronic *** centralisation of pancreatic surgery services,with the development of designated large-volume centres,has contribu-ted to significantly improved *** this editorial,we discuss the complex associations between diabetes mellitus(DM)and pancreatic/periampullary disease in the context of pancreatic surgery and overall management of complex pancreatitis,highlighting the consequential needs and the indispensable role of specialist diabetes teams in support of tertiary pancreatic *** 3c pan-creatogenic DM,refers to DM developing in the setting of exocrine pancreatic disease,and its identification and management can be challenging,while the glycaemic control of such patients may affect their course of treatment and *** preoperative diabetes assessment is warranted to aid identification of patients who are likely to need commencement or escalation of glucose lowering therapy in the postoperative *** incidence of new onset diabetes after pancreatic resection is widely variable in the literature,and depends on the type and extent of pancreatic resection,as is the case with pancreatic parenchymal loss in the context of severe *** involvement of a specialist diabetes team is essential to ensure a holistic *** the current era,large volume pancreatic surgery services commonly abide by the principles of enhanced recovery after surgery,with inclusion of provisions for optimisation of the perioperative glycaemic control,to improve *** various guidelines are available to aid perioperative management of DM,auditing and quality improvement platforms have highlighted deficiencies in the perioperative management of diabetic patients and areas of required *** need for perioperative support of diabetic

关键词： Pancreatectomy Pancreatoduodenectomy Whipple’s Pancreatitis Diabetes specialist Type 3c pancreatogenic diabetes mellitus