Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
The design of blind rendezvous strategies for dynamic spectrum access in multi-users, multi-hop networks is a challenging task. In this paper, a two radios synchronization strategy that minimizes the time to rendezvous in multi-users networks is analyze. In fact, it has been recently demonstrated that this synchronization strategy provides optimum results in terms of maximum time to rendezvous (MTTR)...
In beyond silicon research, Quantum-dot Cellular Automata (QCA) emerged as a candidate for replacing the traditional CMOS logic circuits. QCA is a paradigm based on the exchange of information between cells that takes advantage of Coulomb's law. In this work, we managed to extract dependence relations through a circuit designed on QCA Designer simulator. We built small models representing fragments...
Micro aerial vehicles, such as multirotors, are developed for applications like autonomous monitoring, inspection, and surveillance. Most of the current application scenarios assume a stationary environment and thus, trajectory generation rehes on static targets. In this paper, we address time-optimal trajectory generation in dynamic environments, e.g., for landing on a moving platform. We extend...
Modern smart systems are usually built by implementing SW functionalities executed on HW platforms composed of both digital and analog components. Validation is mainly implemented through simulation of the functional behavior of the entire smart system modeled by a Virtual Platform. It is thus crucial to achieve fast mixed-signal simulation by removing unnecessary overhead due to synchronization between...
Deep learning with a large number of parametersrequires distributed training, where model accuracy and runtimeare two important factors to be considered. However, there hasbeen no systematic study of the tradeoff between these two factorsduring the model training process. This paper presents Rudra, aparameter server based distributed computing framework tunedfor training large-scale deep neural networks...
Hardware in-the-loop simulation test has the advantage of live test, digital simulation test, which can build the lifelike test environment. This kind of test can carry through repeated test of multi-sample. The key technique of the hardware in-the-loop simulation test is real-time algorithmic and communication technology. In this paper, based on reflective memory network, the design for hardware...
Understanding the impact of global climate change on the world's ecosystem is critical to society at large and represents a significant challenge to researchers in the climate community. One important piece of the climate puzzle is how the dynamics of large-scale ice sheets, such as those covering Greenland and Antarctica, will respond to a warming climate. Relatively recently, glaciologists have...
Real time is one of fundamental characteristics for hardware in the loop simulation (HILS). In this paper, we adopt the fiber reflective memory net (RMN) strategy to ensure the real-time data transmission and propose a clock synchronization method based on reflective memory card (RFM) interruption to make the simulation process stable. The character of RFM is real-time, delay determinacy and reliability...
We present a general mathematical model of signals for efficient and accurate simulation of analog and mixed signal (AMS) systems. It relies on signal coding and parameterization and allows heterogeneous system specification at different abstraction levels, as well as, the operational computation of continuous time systems' dynamical behavior. In particular, we derive a matrix for operational subdivision...
This article considers NoSQL database replication problems. It analyzes the influence of the N, W, R replication parameters on the consistency characteristics of database record replicas (N -- the total number of one record's replicas, W -- number of replicas for write operation execution into a database, R -- number of replicas for record read operation execution from a database). It describes a...
This article considers NoSQL database replication problems. It analyzes the influence of the N, W, R replication parameters on the consistency characteristics of database record replicas (N -- the total number of one record's replicas, W -- number of replicas for write operation execution into a database, R -- number of replicas for record read operation execution from a database). It describes a...
The paper discusses a new technique for development of metamodels for the modelling distributed parallel software systems. The approach is an important stage of Domain-Specific Mathematical Modelling (DSMM), developed to enhance the methodology of Domain-Specific Modelling. The advantage of DSMM is a possibility of constructing metamodels for modelling domains, having different mathematical properties...
Optimistic simulation yields impressive performance gains for many models. State saving is a quick way to provide the rollback mechanism required for this approach, but it has some drawbacks: it may not handle models with massive states or be able to support memory-constrained systems. This work presents a novel approach to state saving by storing only the relative changes caused by an event. Compressing...
To assure power quality and stability of the electricity network it is important to perform control and synchronization of the inverters which are used in the connection of distributed DC power generation units to the grid. It is proven that the model of the inverters, is a differentially flat one. By exploiting differential flatness properties it is shown that the multiple inverters model can be...
Novel concepts for energy systems increasingly focus on solutions that go beyond the scope of traditional engineering domains. Unfortunately, there is still a lack of appropriate modeling and simulation tools for applications in energy-related multi-domain systems. However, well-established methods from other scientific and industrial areas provide promising approaches to overcome the associated challenges...
The simulation of networked multi-core chips is a significant research problem in large embedded applications. Although multi-core processors in embedded systems offer increased computational resources and performance, many applications still require distributed systems with multiple of these processors to satisfy resource requirements and provide fault-tolerance at system level. This paper introduces...
The advantage of hysteresis regulators with double synchronization (HDS-regulator) is connected with the promising combination of the operational and ecological characteristics of the energy conversion process. It causes the increase in interest to study in more detail the HDS-regulator dynamics in application to technical and nature nonlinear systems. And the following question seems to be the most...
Traffic engineering is a key in effective utilisation of the road network infrastructure. Simulation assists traffic engineers making informed decisions on how to operate and direct traffic within the road networks. These simulations are complex, generate big data and require high-powered computers, which can process information faster than real time, to ensure the results can be used to affect traffic...
Building oscillator based computing systems with emerging nano-device technologies has become a promising solution for unconventional computing tasks like computer vision and pattern recognition. However, simulation and analysis of these systems is both time and compute intensive due to the nonlinearity of new devices and the complex behavior of coupled oscillators. In order to speed up the simulation...
In this paper, we study the railway timetabling problem to utilize regenerative braking energy produced by trains in a railway network. An electric train produces regenerative energy while braking, which is often lost in present technology. A positive overlapping time between braking and accelerating phases of a suitable train pair makes it possible to save electrical energy by transferring the regenerative...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.