State-of-the-Art on models, architectures and methods for CIM systems design

1992 ◽  
pp. 27-40
Author(s):  
Guy DOUMEINGTS ◽  
David CHEN
Keyword(s):  
State Of The Art ◽  
Systems Design

scholarly journals State of the art in persuasive systems design

2015 ◽  
Vol Volume 4, Number 1, Special... (Special Issue...) ◽  
Author(s):  
Anthony Foulonneau ◽  
Gaëlle Calvary ◽  
Eric Villain
Keyword(s):  
State Of The Art ◽  
Systems Design ◽  
Grand Challenge ◽  
Nouvelles Technologies ◽  
Societal Challenges ◽  
Persuasive Technologies ◽  
International Audience ◽  
Persuasive Systems Design ◽  
Persuasive Systems ◽  
Systems Studies

International audience By their ability to change person's behaviors and attitudes, persuasive technologies appear as promising for overcoming societal challenges. They are based on theories and models from cognitive psychology and social psychology. The earlier works on persuasive technologies, by Fogg, identified many persuasive principles to influence user's behaviors and attitude, and thus useful for building persuasive systems. Studies on persuasive technologies also bring design methods, architectures, persuasive interfaces, and experimentation in numerous domains. The grand challenge is now to adapt persuasion to the complexity and versatility of each individual, thereby maximizing the persuasive effectiveness. We still have to build plastic persuasive technologies. Les technologies persuasives, par leur capacité à agir sur le comportement et les attitudes des individus, sont une piste prometteuse dans de nombreux domaines, comme pour le traitement des grands défis sociétaux (ex : santé, environnement, …) ou le marketing (ex : inciter l’adoption d’un service, …) qui se présentent à nous. Elles s’appuient sur des résultats obtenus en psychologie cognitive et sociale lors des dernières décennies. Les travaux sur la persuasion technologique, initiés par Fogg à la fin des années 90, ont permis d’identifier de nombreux principes de persuasion sur lesquels les nouvelles technologies peuvent s’appuyer pour influencer le comportement de leurs utilisateurs. Ces travaux ont aussi permis de mettre en œuvre des méthodes de conception, des interfaces persuasives et d’expérimenter la persuasion technologique dans des domaines variés. Le plus grand défi reste maintenant d’adapter la persuasion à la complexité et à la variabilité intra-individuelle et interindividuelle, à la versatilité de chaque individu pour optimiser l’efficacité persuasive. Il nous reste à construire des technologies persuasives plastiques.

Turbine Cooling Systems Design: Past, Present and Future

2009 ◽  
Author(s):  
James P. Downs ◽  
Kenneth K. Landis
Keyword(s):  
Research And Development ◽  
Film Cooling ◽  
Gas Turbines ◽  
State Of The Art ◽  
Cooling System ◽  
Systems Design ◽  
Maximum Temperature ◽  
Cooling Systems ◽  
Cooling Flows ◽  
Turbine Cooling

Over a half a century ago, the power and performance of the first gas turbine engines were constrained by material limits on operating temperature. In these machines, the combustor exit temperature could not exceed the capability of the materials used to construct the turbine. Eventually, cooling was introduced into turbine components to enable turbine power and efficiency to be increased. That revolutionary step enabled gas turbines to become competitive with other heat engines for business, particularly in the rapidly expanding aviation and electrical power generation sectors. Although the first cooled turbine components may be considered crude by present standards, the underlying foundation of internal convection cooling remains the backbone for cooled turbine components today. Since its introduction, many improvements and additions to the fundamental basis of turbine component cooling have been developed. The introduction of film cooling is a prominent example. With this past research and development, turbine cooling system designs have progressed to the point where they represent the norm, rather than the exception in today’s gas turbines. Further, the confidence and robustness of these systems has been elevated to the point where the working fluid temperatures can exceed the maximum temperature of the structural materials by wide margins. In this paper, from an engineering perspective, we explore some of the significant accomplishments that have led to the current state-of-the-art in turbine cooling systems design. These systems employ a delicate balance of structural material capabilities with advanced internal and film cooling and the use of thermal barrier coatings to satisfy the goals and objectives of specific applications. At the same time, it is widely recognized that the use of cooling flows in the turbine results in parasitic losses that reduce performance. To that end, we also consider some of the specific challenges that face cooling system designers to reduce cooling flows today. Based on the research and development that has been performed to date, we consider the current status of cooling technology relative to a theoretical peak. Finally, we explore some of the hurdles that must be overcome to effectively raise the bar and realize future advancement of the state-of-the-art. The goal is to measure and separate new technologies that are merely different from those that are superior to past designs. Clearly, the identification of risk and risk reduction will play an important role in the development of future turbine cooling systems.

scholarly journals State-of-the-art of contactless energy transfer (CET) systems: design rules and applications

2014 ◽  
Vol 1 (1) ◽  
pp. 10-20 ◽  
Author(s):  
Riccardo Trevisan ◽  
Alessandra Costanzo
Keyword(s):  
Energy Transfer ◽  
State Of The Art ◽  
Resonance Condition ◽  
Systems Design ◽  
Maximum Efficiency ◽  
Extensive Review ◽  
Design Rules ◽  
Figures Of Merit ◽  
Automatic Machinery ◽  
Main Operating

This paper is dedicated to the extensive review of state-of-the-art contactless energy transfer (CET) systems that are gaining increasing interest in the automatic machinery industries. We first introduce the circuit equivalent networks considered in the literature, and discuss the main operating principles. Possible circuital resonant solutions are also discussed together with the required compensating networks. Then we focus on the problem of transferring, at the maximum efficiency, high-power levels (of the order of 1 kW or higher), showing that highly coupled inductive links are needed, requiring to refrain from the resonance condition. These systems are usually referred to as CET systems, since the link distances are negligible with respect to the coils dimensions. The operating frequencies are of the order of tens to hundreds of kilohertz. The fundamental figures of merit are analytically defined and used to measure the actual limitations involved in this class of systems, including aspects related to realization feasibility with respect to voltages and currents limitations. Finally, state-of-the-art CET works are surveyed, and realistic applications for different operating frequencies are considered and critically compared.

scholarly journals The I/O-Complexity of Ordered Binary-Decision Diagram Manipulation

1996 ◽  
Vol 3 (29) ◽  
Author(s):  
Lars Arge
Keyword(s):  
State Of The Art ◽  
Systems Design ◽  
Main Memory ◽  
Digital Systems ◽  
Decision Diagrams ◽  
Input Output ◽  
Concurrent System ◽  
Ordered Binary Decision Diagrams ◽  
Binary Decision ◽  
Software Packages

Ordered Binary-Decision Diagrams (OBDD) are the state-of-the art<br />data structure for boolean function manipulation and there exist<br />several software packages for OBDD manipulation. OBDDs have<br />been successfully used to solve problems in e.g. digital-systems design, verification and testing, in mathematical logic, concurrent system design and in artificial intelligence. The OBDDs used in many of these applications quickly get larger than the available main memory and it becomes essential to consider the problem of minimizing the Input/Output (I/O) communication. In this paper we analyze why existing OBDD manipulation algorithms perform poorly in an I/O environment and develop new I/O-efficient algorithms.

scholarly journals Hydrodynamic State of Art Review: Rotor – Stator Marine Propulsor Systems Design

2021 ◽  
Vol 28 (1) ◽  
pp. 72-82
Author(s):  
Przemysław Król
Keyword(s):  
System Design ◽  
Energy Saving ◽  
State Of The Art ◽  
Systems Design ◽  
Design Criteria ◽  
Efficiency Gain ◽  
Current State ◽  
Screw Propeller ◽  
Marine Propulsor ◽  
State Of Art

Abstract The paper covers the important topic of rotor–stator propulsor system design and operation. For the stand-alone marine screw propeller, both the design criteria for loading distribution and the theoretical efficiency limits are well described in the basic literature. This is in contrast to the combined propulsor system like a propeller cooperating with a pre-swirl device. The paper describes the current state of the art, summarising results obtained by various researchers by installing energy-saving devices on particular vessels. The design methods utilised are briefly outlined, with the main characteristics underlined. Rough analysis of the gathered data confirms the expected trend that a higher efficiency gain due to ESD installation is possible for a higher propeller loading.

scholarly journals A review of the challenges in mobile manipulation: systems design and RoboCup challenges

2020 ◽  
Vol 137 (6) ◽  
pp. 297-308
Author(s):  
Martin Sereinig ◽  
Wolfgang Werth ◽  
Lisa-Marie Faller
Keyword(s):  
Degrees Of Freedom ◽  
Mobile Robotics ◽  
State Of The Art ◽  
Close Contact ◽  
Systems Design ◽  
Dynamic Environments ◽  
Mobile Manipulation ◽  
Mobile Platforms ◽  
Production Lines ◽  
Work Done

Abstract Mobile robotics is already well established in today’s production lines. Navigation, control and perception for mobile robots are vivid fields of research fostering advances in Industry 4.0. In order to increase the flexibility of such mobile platforms, it is also common practice to add serial manipulator arms to their yielding systems with nine degrees of freedom and more. These platforms are not limited to industry but are supportive in various field such as service, assistance, teleoperation and also rehabilitation. Due to the operation of such increasingly complex systems in less structured and dynamic environments - often in close contact with humans - more demanding challenges evolve in terms of systems design, control and sensors. These challenges are also reflected in the various RoboCup leagues. In this paper, we discuss state-of-the-art developments in mobile manipulation using developments and work done in the context of the RoboCup competition as design examples. Additionally, we elaborate on the recent challenges of the RoboCup Rescue League as well as on the RoboCup@Work League.

scholarly journals An Overview about Criticalities in the Modelling of Multi-Sector and Multi-Energy Systems

Environments ◽  
2018 ◽  
Vol 5 (12) ◽  
pp. 130 ◽  
Author(s):  
Alessia Arteconi
Keyword(s):  
Energy Demand ◽  
State Of The Art ◽  
Renewable Energy Sources ◽  
Ghg Emissions ◽  
Systems Design ◽  
Energy Systems ◽  
Design And Optimization ◽  
Multi Level ◽  
Final Energy Demand ◽  
Research Challenge

The urgent need for the reduction of greenhouse gas (GHG) emissions requires efficient and integrated energy communities in order to decrease final energy demand and sustain energy transitions towards renewable energy sources (RES). This introduces a big research challenge for future energy systems design and optimization, given the multi-level and inter-sectorial dimensions of the problem. Buildings cover a central role in this context, because they represent the nexus between different energy carrier networks. The study of the management of multi-sector and multi-energy systems presents several challenges, such as the need to take into account uncertainties, to represent the heterogeneity of the energy demand and the scalability of the problem. This paper aims at outlining such a framework, and at showing the state-of-the-art nature of the above-mentioned challenges.

Understanding Innovation: A Study of Perspectives and Perceptions in Engineering

2011 ◽  
Author(s):  
Jarden Krager ◽  
Kristin L. Wood ◽  
Richard H. Crawford ◽  
Dan Jensen ◽  
Jonathan Cagan ◽  
...  
Keyword(s):  
State Of The Art ◽  
Systems Design ◽  
Specific Group ◽  
Current State ◽  
Analysis Methods ◽  
Essential Components ◽  
Participant Group ◽  
Innovation Practices ◽  
Short Answer Questions ◽  
Innovation Processes

Well developed innovation processes are essential components for continued success of product and systems design throughout industry. Such processes build upon research advancements in innovation techniques and methods. To create such techniques and methods, studies are needed to examine the current state-of-the-art, as well as the corresponding teaching of such innovation processes in higher education. This paper contributes to this effort by studying a specific group of innovation researchers, teachers, and practitioners. The study was created to probe this group of leaders in the engineering design domain using technical, demographic, and short answer questions. Various analysis methods are used to obtain a fundamental view of the answers to these questions with respect to the demographics of the participant group. Two deductive analysis methods are used, in addition to an inductive approach, consisting of a correlation analysis to compare responses to questions and understand trends across the participants. Results from the analyses emphasize the current perceptions of innovation by the participants and opportunities to refine research in improving innovation practices.

scholarly journals Robotic Home-Based Rehabilitation Systems Design: From a Literature Review to a Conceptual Framework for Community-Based Remote Therapy During COVID-19 Pandemic

2021 ◽  
Vol 8 ◽  
Author(s):  
Aylar Akbari ◽  
Faezeh Haghverd ◽  
Saeed Behbahani
Keyword(s):  
Conceptual Framework ◽  
State Of The Art ◽  
Systems Design ◽  
Current Crisis ◽  
Community Based ◽  
Home Based ◽  
Design Paradigm ◽  
Intelligent Community ◽  
Remote Therapy ◽  
Therapeutic Activities

During the COVID-19 pandemic, the higher susceptibility of post-stroke patients to infection calls for extra safety precautions. Despite the imposed restrictions, early neurorehabilitation cannot be postponed due to its paramount importance for improving motor and functional recovery chances. Utilizing accessible state-of-the-art technologies, home-based rehabilitation devices are proposed as a sustainable solution in the current crisis. In this paper, a comprehensive review on developed home-based rehabilitation technologies of the last 10 years (2011–2020), categorizing them into upper and lower limb devices and considering both commercialized and state-of-the-art realms. Mechatronic, control, and software aspects of the system are discussed to provide a classified roadmap for home-based systems development. Subsequently, a conceptual framework on the development of smart and intelligent community-based home rehabilitation systems based on novel mechatronic technologies is proposed. In this framework, each rehabilitation device acts as an agent in the network, using the internet of things (IoT) technologies, which facilitates learning from the recorded data of the other agents, as well as the tele-supervision of the treatment by an expert. The presented design paradigm based on the above-mentioned leading technologies could lead to the development of promising home rehabilitation systems, which encourage stroke survivors to engage in under-supervised or unsupervised therapeutic activities.

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