检索结果-内蒙古大学图书馆

3rd International Conference on Cognitive Mobility, CogMob 2024

作者： Benedek, Balázs Coleșa, Adrian Technical University of Cluj-Napoca Department of Computer Science Cluj-Napoca Romania

ISBN: (纸本)9783031817984

CANComa is hardware-based software developed to demonstrate how to attack Automotive Microcontrollers in a reliable and stealthy manner by forcing the victim Electronic Control Unit (ECU) into an unexpected shutdown. Once the microcontroller has been deactivated, the attacker, knowing the missing CAN messages, takes its place and injects some undesirable data. By this replacement the attacker can disable safety-critical vehicle functions. The method used to execute the shutdown attack is to modify the messages already present on the CAN bus by destroying their acknowledgement bit, causing a false bus-off reaction freezing the victim ECU. We suppose the attacker only has access to the CAN bus via an onboard diagnostics (OBD-II) reader used by mechanics to retrieve the error memory and data stored on the vehicle’s system. The approach described in this paper was simulated using STMicroelectronics microcontrollers, which are architecturally quite similar to the ECUs found in automobiles. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Buses

来源：评论

学校读者我要写书评

暂无评论

Applications of a model based predictive control to heat-exchangers

Applications of a model based predictive control to heat-exc...

引用

2007 Mediterranean Conference on Control and Automation, MED

作者： Balan, Radu Maties, Vistrian Hodor, Victor Hancu, Olimpiu Stan, Sergiu Technical University of Cluj-Napoca Dept. of Mechatronics Cluj-Napoca Romania Technical University of Cluj-Napoca Dept. of Thermodynamics Cluj-Napoca Romania Technical University of Cluj-Napoca Dept. of Mechanics and Programming Cluj-Napoca Romania

ISBN: (纸本)142441282X

Model based predictive control (MBPC) is an optimization-based approach that has been successfully applied to a wide variety of control problems. When MBPC is employed on nonlinear processes, the application of this typical linear controller is limited to relatively small operating regions. The accuracy of the model has significant effect on the performance of the closed loop system. Hence, the capabilities of MBPC will degrade as the operating level moves away from its original design level of operation. This paper presents an MPC algorithm which uses on-line simulation and rule-based control. The basic idea is the on-line simulation of the future behaviour of control system, by using a few control sequences and based on nonlinear analytical model equations. Finally, the simulations are used to obtain the 'optimal' control signal. These issues will be discussed and nonlinear modeling and control of a single-pass, concentric-tube, counter flow or parallel flow heat exchanger will be presented as an example. ©2007 IEEE.

关键词： Closed loop systems

来源：评论

学校读者我要写书评

暂无评论

Optimization of resource-aware parallel and distributed computing: a review

引用

The Journal of Supercomputing 2025年第7期81卷 1-80页

作者： Czarnul, Paweł Antal, Marcel Baniata, Hamza Griebler, Dalvan Kertesz, Attila Kessler, Christoph W. Kouloumpris, Andreas Kovačić, Salko Markus, Andras Michael, Maria K. Nikolaou, Panagiota Öz, Isil Prodan, Radu Rakić, Gordana Faculty of Electronics Telecommunications and Informatics Gdansk University of Technology Gdańsk Poland Computer Science Department Technical University of Cluj-Napoca Cluj-Napoca Romania Department of Software Engineering University of Szeged Szeged Hungary School of Technology Pontifical Catholic University of Rio Grande do Sul (PUCRS) Porto Alegre Brazil Department of Computer and Information Science Linköping University Linköping Sweden Department of Electrical and Computer Engineering KIOS Research and Innovation Center of Excellence University of Cyprus Nicosia Cyprus Džemal Bijedić University of Mostar Mostar Bosnia and Herzegovina University of Central Lancashire Cyprus Larnaka Cyprus Computer Engineering Department Izmir Institute of Technology Izmir Turkey Institute of Information Technology Alpen-Adria-Universität Klagenfurt Klagenfurt Austria Faculty of Sciences University of Novi Sad Novi Sad Serbia

This paper presents a review of state-of-the-art solutions concerning the optimization of computing in the field of parallel and distributed systems. Firstly, we contribute by identifying resources and quality metrics in this context including servers, network interconnects, storage systems, computational devices as well as execution time/performance, energy, security, and error vulnerability, respectively. We subsequently identify commonly used problem formulations and algorithms for integer linear programming, greedy algorithms, dynamic programming, genetic algorithms, particle swarm optimization, ant colony optimization, game theory, and reinforcement learning. Afterward, we characterize frequently considered optimization problems by stating these terms in domains such as data centers, cloud, fog, blockchain, high performance, and volunteer computing. Based on the extensive analysis, we identify how particular resources and corresponding quality metrics are considered in these domains and which problem formulations are used for which system types, either parallel or distributed environments. This allows us to formulate open research problems and challenges in this field and analyze research interest in problem formulations/domains in recent years.

关键词： Distributed cloud

来源：评论

学校读者我要写书评

暂无评论

Design, simulation and control of isoglide T3R1 parallel robot

引用

UPB Scientific Bulletin, Series D: Mechanical Engineering 2011年第2期73卷 27-34页

作者： Verdes, Dan Coman, Mircea Donca, Radu BǍlan, Radu Technical University of Cluj-Napoca Department of Mechanisms Precision Mechanics and Mechatronics Romania

This paper presents a parallel robot with four degrees of freedom. The isoglide T3R1 parallel robot is a robot with decoupled motions. In this paper will be presented the design, simulation and the control of this rob... 详细信息

关键词： Robots

来源：评论

学校读者我要写书评

暂无评论

Post-seismic response of a rc flat slab structure subjected to column removal

Post-seismic response of a rc flat slab structure subjected ...

引用

2021 fib Symposium of Concrete Structures: New Trends for Eco-Efficiency and Performance

作者： Botez, Mircea D. Ioani, Adrian M. Department of Structural Mechanics Technical University of Cluj-Napoca Cluj-Napoca Romania

ISBN: (纸本)9782940643080

Nowadays, the structural robustness of the flat slab structures subjected to different load scenarios, represents a topic of great interest in technical literature. Considering a series of two exceptional loads, the aim of the current study is to numerically assess the post-seismic progressive collapse risk of a reinforced concrete flat slab structure designed according to the seismic provisions of the Eurocode 8. Starting from the specimen experimentally tested at the ELSA Laboratory of the EC-JRC Ispra, a tri-dimensional numerical model successfully validated during the Slab STRESS – Blind competition test, is developed by the authors based on FEM approach. The structure consists of two spans, three bays and has two stories. In the first phase, the seismic action is simulated in a quasi-static analysis through a series of cyclic lateral loads. Three cycles are considered for each lateral drift level (0.25%, 0.5%, 1%, etc.), until a maximum drift value which corresponds to the lateral displacement provided by the code in the ultimate limit state (ULS), is reached. Subsequently, the second phase simulates the sudden removal of a ground floor column placed on the short side of the building. The vertical support is removed in less than 1/10 of the period associated with the structural response mode for the vertical motion of the damaged structure and the structural elements experience nonlinear deformations before failure. Thus, a nonlinear dynamic analysis is considered for this phase. The results are assessed by comparison with the failure criterion related to progressive collapse, provided by the main design guidelines (GSA (2013), DoD (2009)). © Fédération Internationale du Béton (fib) – International Federation for Structural Concrete.

关键词： Numerical models

来源：评论

学校读者我要写书评

暂无评论

Ultimate and nominal strength analysis of composite sections with arbitrary shape 9

Ultimate and nominal strength analysis of composite sections...

引用

9th International Conference on Advances in Steel Structures, ICASS 2018

作者： Chiorean, Cosmin G. Buru, Stefan M. Department of Structural Mechanics Technical University of Cluj-Napoca Cluj-Napoca Romania

ISBN: (纸本)9889914093

This paper presents a new computational method for ultimate strength analysis of composite steel-concrete cross-sections with arbitrary shape. The ultimate (maximum) strength capacity is formulated as a problem of unconstrained mathematical optimization by applying the method of Lagrange multipliers. The optimized function is defined as a total internal bending moment and two constrains are defined by enforcing the constant axial force and bending moment ratio. Hence, the ultimate bending moment capacities are directly obtained by solving three coupled nonlinear equations. This procedure adopts a tangent stiffness strategy for the solution of the nonlinear system of equations thus resulting in a high rate of convergence. The developed procedure has been used to predict the bending moment capacity diagrams of several cross-sections and the differences between the ultimate and nominal strength capacities of cross-sections are highlighted. The strain-softening effect exhibited by the concrete in compression is discussed in this respect and the comparisons made prove the effectiveness and the reliability of the proposed method of analysis. Copyright © 2018 by The Hong Kong Institute of Steel Construction.

关键词： Lagrange multipliers

来源：评论

学校读者我要写书评

暂无评论

A graphical simulation system for the parallel structures 1

A graphical simulation system for the parallel structures

引用

1st European Conference on Mechanism Science, EuCoMeS 2006

作者： Pisla, Doina Itul, Tiberiu Pisla, Adrian Department of Mechanics and Computer Programming Technical University in Cluj-Napoca Romania Department of Machine Tools and Industrial Robots Technical University in Cluj-Napoca Romania

ISBN: (纸本)3901249850

In the paper is presented a simulation system for parallel robots, which deals with the robot kinematics, workspace generation, singular position identification and trajectory visualization. The latest obtained results demonstrate that from the kinematic model and the graphical simulation the implemented algorithms offer a higher degree of generality. Therefore the developed simulation software modules may be applied to different types of parallel robots with three degrees of freedom. The computing time necessary for generating the virtual model is relatively small.

关键词： Kinematics

来源：评论

学校读者我要写书评

暂无评论

On the solution of inverse dynamics for 6-DOF robot with triangular platform 1

On the solution of inverse dynamics for 6-DOF robot with tri...

引用

1st European Conference on Mechanism Science, EuCoMeS 2006

作者： Itul, Tiberiu Pisla, Doina Pisla, Adrian Department of Mechanics and Computer Programming Technical University in Cluj-Napoca Romania Department of Machine Tools and Industrial Robots Technical University in Cluj-Napoca Romania

ISBN: (纸本)3901249850

The parallel robots dynamics requires a great deal of computing as regards the formulation of the generally nonlinear equations of motion and their solution. In this paper different solutions for solving the dynamical model for the guided in three points parallel robots are presented. The derived dynamical algorithms offer the possibility of a complex dynamic study for these parallel robots in order to evaluate their dynamic capabilities and to generate the control algorithms.

关键词： Nonlinear equations

来源：评论

学校读者我要写书评

暂无评论

A method for the determination of the geometrical dimension of the helical gears with increased lifetime

A method for the determination of the geometrical dimension ...

引用

2009 3rd IEEE International Conference on Digital Ecosystems and Technologies, DEST '09

作者： Antal, Tiberiu Alexandru Antal, Adalbert Mechanics and Programming Department Technical University from Cluj-Napoca Romania Machine Design and Tribology Department Technical University from Cluj-Napoca Romania

ISBN: (纸本)9781424423460

The paper gives a new computational method for the determination of the geometrical dimensions of the helical gears, with addendum modification, based on the model of the relative velocities equalization at the beginning and at the ending of the meshing. In this model the relative velocities between the teeth flanks during the meshing are used to increase the lifetime of the gears by their equalization at the points where the differences are highest. Then, the equalized relative velocities are minimized, using a genetic algorithm from the MATLAB computing environment. ©2009 IEEE.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Numerical solving of the fokker-planck equation for nonlinear vibrations

Numerical solving of the fokker-planck equation for nonlinea...

引用

6th European Conference on Noise Control: Advanced Solutions for Noise Control, EURONOISE 2006

作者： Ursu, Mihai Technical University of Cluj-Napoca Department of Mechanics and Computer Programming Muncii Bvd. 103-105 400641 Cluj-Napoca Romania

The nonlinear random vibration issues are analyzed by the use of parabolic partial differential equations. Among them, the Fokker-Planck equation is a very powerful tool for obtaining statistical information, because it is derived on a probabilistic basis and can be formulated to govern random processes in spring-mass mechanical systems. If a single degree-of-freedom (SDOF) mechanical system is excited by wideband random noise, the statistical behaviour for the relative displacement of the mass can be determined by numerical solving the Fokker-Planck equation. A C++ computer program was written for the two-dimensional finite differences method, with initial value conditions. The numerical method is based on an operator splitting technique combined with an alternating-direction implicit (ADI) method. The white noise like signal is substituted by a true-random number generator that gives uniform random deviates, of real number type. For a concrete example with Gaussian distribution initial conditions, several 3D plots are given for the calculated probability density function.

关键词： Nonlinear equations

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：