Temat: real-time - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A simple and cost-effective method to construct reliable real-time programs
Autorzy:: Elzer, P. F.
Gollub, M.
Trenkel, S.
Powiązania:: https://bibliotekanauki.pl/articles/384543.pdf
Data publikacji:: 2010
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: real-time systems
real-time programming
structured programming
reliability
graphical representation
Opis:: This paper presents a proposal for structuring real-time programs in a way that improves their reliability. Basically, it consists of five constructs that have been designed after the model of classical "structured programming", together with a generalized way of dealing with resources. After some considerations about reliability these constructs are presented and explained. Then, a test implementation for two different programming languages and operating systems is briefly described. Finally, some pieces of code give an impression of the character of the method.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2010, 4, 1; 28-42
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Response-time analysis of a CAN network used for supervisory control and diagnostic systems
Autorzy:: Werewka, J.
Dach, M.
Powiązania:: https://bibliotekanauki.pl/articles/970223.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: real-time systems
scheduling
distributed systems
fieldbus
real time analysis
CAN
CANopen
Opis:: This paper refers to construction methods of Supervisory Control and Diagnostic Systems (SCDS) based on a CAN bus. Emphasis is put on the construction of such systems. Meeting real time constraints has become one of major aspects of this elaboration. The study enumerates possibilities of using various communication mechanisms of CAN, applicable for real-time systems. Proposed solutions are especially suitable for general-purpose SCDS. Principles of real-time analysis for CAN bus based systems are discussed as well. An example of SCDS implementation for a Swiss Light Source (SLS) large scale accelerator project is given. Time analysis is made for the constructed system with real-time conditions met. Experiments performed in the SLS confirm the results of the analysis.
Źródło:: Control and Cybernetics; 2010, 39, 4; 1135-1157
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Using Pre-emption For Dependable Urban Vehicle Traffic
Autorzy:: Letia, T.
Barbu, S.
Dinga, F.
Powiązania:: https://bibliotekanauki.pl/articles/384863.pdf
Data publikacji:: 2009
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: urban vehicle traffic control
real time scheduling
traffic congestion
real time control
dependability
Opis:: A new approach for design and implementation of urban vehicle control system is proposed. The vehicle streams on lanes are considered similar with the streams of instructions in multitask programs. Real-time scheduling algorithms are used to allocate the green lights to phases. An adaptive component is used to calculate new vehicle flow parameters when a failure appears as a consequence of an accident. The real-time schedulers use the parameters to obtain new feasible resource allocations.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 1; 40-45
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Real-Time Operating Systems for Robotic Applications : a Comparative Survey
Autorzy:: Kmiecik, P.
Granosik, G.
Powiązania:: https://bibliotekanauki.pl/articles/385011.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: real-time operating system
survey
Opis:: Modern robotics brings up a variety of new challenges. Industrial-only times are gone forever. Nowadays, by performing many diversified services, robots turned out to be a part of our everyday life. There is no doubt that they should be able to interact with this new miscellaneous environment seamlessly. Along with the number of requirements, the importance of software increases. While gaining more autonomy, besides standard motion control, a wide range of cogntive tasks has to be executed simultaneously. It is quite obvious that complex systems with a lot of independent modules and many functions to perform need flexible and reliable sofware solutions. This article takes a Real-Time Operating System as an answer to the problems of the new generation robotics.By comparing selected features, it provides an evaluation of the most popular commercial and non-commercial solutions. Paper describes the key characteristics that should be taken into consideration during the design process and presents several examples of their successful robotic applications, including our own choices for decentralized controllers.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2015, 9, 3; 9-17
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: REAL-TIME CONFERENCING TOOLS IN TEACHING SPEAKING TO ADULT LEARNERS
Autorzy:: Fronczyk, Kaja
Powiązania:: https://bibliotekanauki.pl/articles/955796.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
Tematy:: CMC
real-time conferencing
speaking
Źródło:: Teaching English with Technology; 2008, 8, 4
1642-1027
Pojawia się w:: Teaching English with Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Low cost, high accuracy real-time simulation used for rapid prototyping and testing control algorithms on example of BLDC motor
Autorzy:: Baszyński, M.
Powiązania:: https://bibliotekanauki.pl/articles/141151.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: BLD
FPGA
real time simulation
Opis:: This article presents the simulation of a BLDC motor and its closed control system in FPGA. The simulation is based on a mathematical model of the motor, including the electromagnetic torque, phase currents, back electromotive force, etc. In order to ensure calculation precision, the equations describing the motor were solved using a floating point representation of real numbers, and a small step of numerical calculations of 1 μs was assumed. The time step selection methodology has been discussed in detail. The motor model was executed with the use of Textual Programming Languages (with HDL codes).
Źródło:: Archives of Electrical Engineering; 2016, 65, 3; 463-479
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Real Time Processing of Networked Passive Coherent Location Radar System
Autorzy:: John, M.
Inggs, M.
Petri, D.
Powiązania:: https://bibliotekanauki.pl/articles/226268.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: passive
PCL
real-time
GPU
Opis:: A Passive Coherent Location (PCL) Radar system, consisting of spatially distributed transmitters and receivers is currently being integrated at the University of Cape Town (UCT). The paper investigates the feasibility of real-time processing of PCL system signals using Graphic Processing Units (GPUs), specifically a study of two distinct clutter cancellation algorithms: ECA (Extensive Cancellation Algorithm) and NLMS (Normalised Least Mean Square). Clutter cancellation is the most computationally demanding part of PCL signal processing. This investigation compares the processing speed-up achieved by GPU over CPU implementations, with very encouraging results.
Źródło:: International Journal of Electronics and Telecommunications; 2011, 57, 3; 363-368
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: RTN measurements accuracy test in reference to MSPP
Test dokładności pomiarów RTN w odniesieniu do MSPP
Autorzy:: Uznański, A.
Powiązania:: https://bibliotekanauki.pl/articles/385703.pdf
Data publikacji:: 2009
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: Real Time Networks
protokół Ntrip
wirtualne stacje referencyjne
real time networks
NTRIP
virtual reference station
Opis:: The RTN measurements in Poland date back to 2006, when the Małopolska System for Precision Positioning (MSPP) was started up. In 2008, the nationwide ASG-EUPOS system was put in operation in Poland. The paper presents the results of the test measurements aimed at evaluating the accuracy of position determination of points, based on the MSPP. The GPS static measurements, RTN measurements, tachymetric measurements and precision levelling were performed on 24 test points stabilised in the distances of approx. 12 km, 21 km and 34 km from the KRAW station located centrally in the MSPP. During the test measurements ca. 3000 positions of points were determined altogether, using the following mountpoints: RTCM_FKP, RTCM_23VRS, RTK3.0 (RTCM 3.0 VRS) and KRAW_RTCM30. While analysing the averaged results of the measurements of the test points, it can be concluded that the information published on the MSPP website (regarding the point position accuracy of at least 3 cm for situation and 5 cm for height) is reflected in the measurement results. Taking into consideration each of the solutions individually, the values were indeed exceeded for the horizontal coordinates – 3.6% and for the height 5.6%, except for the Single Baseline solution, in which the height differences were only rarely below 5 cm.
W Polsce historia pomiarów RTN sięga praktycznie roku 2006, kiedy to uruchomiono regionalny Małopolski System Pozycjonowania Precyzyjnego (MSPP). W 2008 r. oddano do użytku ogólnopolski system ASG-EUPOS. W pracy przedstawiono wyniki pomiarów testowych, mających na celu ocenę dokładności wyznaczania pozycji punktów w oparciu o MSPP. Pomiary statyczne GPS, pomiary RTN, pomiary tachymetryczne oraz niwelację precyzyjną wykonano na 24 punktach testowych zastabilizowanych w odległościach ok. 12 km, 21 km i 34 km od stacji KRAW zlokalizowanej centralnie w MSPP. W pomiarach testowych wyznaczono łącznie ok. 3000 pozycji punktów, korzystając z mountpointów: RTCM_FKP, RTCM_23VRS, RTK3.0 (RTCM 3.0 VRS) oraz KRAWRTCM30. Analizując wyniki pomiarów punktów testowych zgeneralizowane do wartości średnich, należy stwierdzić, że podawane na stronie MSPP informacje o dokładności wyznaczenia pozycji punktu nie gorszej niż 3 cm sytuacyjnie i 5 cm wysokościowo znalazły potwierdzenie w wynikach pomiarów. Biorąc pod uwagę każde z rozwiązań indywidualnie, należy stwierdzić, iż wartości te bywały jednak przekraczane w przypadku współrzędnych sytuacyjnych 3,6% oraz wysokości 5,6%, z wyłączeniem rozwiązania Single Baseline, w którym różnice wysokości tylko sporadycznie były mniejsze od 5 cm.
Źródło:: Geomatics and Environmental Engineering; 2009, 3, 2; 81-90
1898-1135
Pojawia się w:: Geomatics and Environmental Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: A New Downlink Scheduling Algorithm Proposed for Real Time Traffic in LTE System
Autorzy:: Mahfoudi, M.
EL Bekkali, M.
Najid, S.
Mazer, S.
EL Ghazi, M.
Powiązania:: https://bibliotekanauki.pl/articles/227115.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: QoS
real-time traffic
scheduling strategies
Opis:: The Third Generation Partnership Project (3GPP) has developed a new cellular standard based packet switching allowing high data rate, 100 Mbps in Downlink and 50 Mbps in Uplink, and having the flexibility to be used in different bandwidths ranging from 1.4 MHz up to 20 MHz, this standard is termed LTE (Long Term Evolution). Radio Resource Management (RRM) procedure is one of the key design roles for improving LTE system performance, Packet scheduling is one of the RRM mechanisms and it is responsible for radio resources allocation, However, Scheduling algorithms are not defined in 3GPP specifications. Therefore, it gets a track interests for researchers. In this paper we proposed a new LTE scheduling algorithm and we compared its performances with other well known algorithms such as Proportional Fairness (PF), Modified Largest Weighted Delay First (MLWDF), and Exponential Proportional Fairness (EXPPF) in downlink direction. The simulation results shows that the proposed scheduler satisfies the quality of service (QoS) requirements of the real-time traffic in terms of packet loss ratio (PLR), average throughput and packet delay. This paper also discusses the key issues of scheduling algorithms to be considered in future traffic requirements.
Źródło:: International Journal of Electronics and Telecommunications; 2015, 61, 4; 409-414
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Marine Traffic Real-Time Safety Index
Autorzy:: Xu, T.
Hu, Q. Y.
Xiang, Z.
Wang, D. L.
Powiązania:: https://bibliotekanauki.pl/articles/116195.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Vessel Traffic
safety at sea
Marine Traffic
Marine Traffic Real-Time Safety Index
Real Time
Real-Time Safety Index
Automatic Identification System (AIS)
Waigaoqiao Channel
Opis:: To reflect the safety degree of marine traffic in real-time and intuitively, this paper put forward a concept of real-time safety index of marine traffic, established marine traffic real-time safety index system, and constructed a real-time safety index evaluation model by using vessel traffic and navigation environmental data provided by shore-based AIS base station network, and quantifying a variety of data which impacts the safety of marine traffic such as ships’ real-time dynamic data, weather changes and so on. A continuous real-time evaluation to a specific area was carried out in the form of real-time index curve, taking the Waigaoqiao Channel of Port Shanghai as an example, to verify the feasibility and effectiveness of marine traffic real-time safety index.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8 no. 4; 599-603
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: ILERT - International Learning Environment for Real-Time Software-Intensive Control Systems
Autorzy:: Kornecki, A. J.
Hilburn, T. B.
Grega, W.
Sveda, M.
Thiriet, J. M.
Powiązania:: https://bibliotekanauki.pl/articles/384607.pdf
Data publikacji:: 2009
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: real-time software Engineering
engineering Curricula
Opis:: Due to the heavily software-centric nature of modern reactive and time-critical systems, there is an increasing demand for efficient development of high quality Real-Time Software-Intensive Control systems (RSIC). The study discussed in this paper is focused on the creation of international curriculum framework centred on RSIC - this important aspect of computer-system-control-software engineering education. The study explores the mechanism for involving students from multilingual, geographically separated institutions in a coordinated educational experience. It exposes them to the problems, methods, solution techniques, infrastructure, technologies, regulatory issues, and tools in the domain of dependable real-time, safety-critical, software-intensive control systems. The ultimate objective is the creation of a model RSIC curriculum, which can be used by engineering schools both in the USA and the EU.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 1; 66-71
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Towards the Safety Verification of Real-Time Systems with the Coq Proof Assistant
Autorzy:: Tveretina, O.
Powiązania:: https://bibliotekanauki.pl/articles/384877.pdf
Data publikacji:: 2009
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: formal methods
real-time
theorem proving
Opis:: Hybrid systems involve the interaction of discrete and continuous dynamics. Hybrid systems have been used as a mathematical model for many safety critical applications. One of the most important analysis problems of hybrid systems is the reachability problem. In this paper we argue that the proof assistant Coq can be used for the hybrid systems verification. An example of a train crossing control is provided.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 1; 30-32
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Dynamic fuzzy model for detecting verbal violence in real time
Autorzy:: Campos, Obed
Pancardo, Pablo
Hernandez-Nolasco, Jose Adan
Powiązania:: https://bibliotekanauki.pl/articles/27312892.pdf
Data publikacji:: 2022
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: fuzzy logic
dynamic
verbal violence
real time
Opis:: The crime rates in Mexico have been increasing in recent years; every day, there are reports on social media and in the news where assaults and verbal aggression by criminals can be seen. Public transportation units suffer from violence that authorities have not been able to reduce despite their efforts. This is why we have developed a fuzzy logic model that can adapt to almost any scenario thanks to the dynamism that we have implemented in each of its stages. We have obtained promising results that we believe will be of great help to the authorities for detecting the exact moment in which verbal aggression that is typical of a violent assault is happening in real time. This is a tool to help the authorities, not a substitution; we are simply making use of the latest technologies that are available to us. The goal of this paper is to provide a novel method for Mexican authorities in Mexico City in order to help the actual surveillance systems make faster decisions about whether violent assaults are happening or not.
Źródło:: Computer Science; 2022, 23 (4); 467--493
1508-2806
2300-7036
Pojawia się w:: Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Development of TaqMan-based real-time PCR assay based on the E1 genefor the quantitative detection of the Getah virus
Autorzy:: Lin, A.
Hu, X.
Cui, S.
Yang, T.
Zhang, Z.
Li, P.
Guo, M.
Lu, Y.
Powiązania:: https://bibliotekanauki.pl/articles/16647453.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: Getah virus
real-time PCR
TaqMan
detection
Opis:: To develop a sensitive, specific, and rapid approach for the detection Getah virus (GETV), a set of primers targeting the conserved region of the E1 gene was created. The TaqMan-based real-time PCR method for GETV detection was developed by optimizing the reaction conditions. The method demonstrated excellent specificity, and amplification did not occur with the causative agents of all prevalent swine viral infections (CSFV, PRRSV, PRV, PEDV, PTV, and JEV), except GETV. Additionally, upon assessing the sensitivity of the method, the minimum detection limit for GETV was found to be 5.94 copies/μL, which is 10 times higher than that of the traditional PCR approach. Further, the intra- and inter-assay variation coefficients were less than 1%, demonstrating good repeatability. Moreover, GETV was found in 10 of the 20 field serum samples using real-time PCR but only in three of the samples using traditional PCR. Consequently, the first GETV TaqMan-based real-time PCR approach based on the E1 gene was developed for GETV pathogenic diagnoses, and this exhibited high specificity, sensitivity, and repeatability. This assay is practical for the pathogenic diagnosis and epidemiology of GETV.
Źródło:: Polish Journal of Veterinary Sciences; 2023, 26, 1; 21-28
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Real-Time Compensation of Machine Tool Thermal Error Including Cutting Process
Autorzy:: Horejs, O.
Mares, M.
Hornych, J.
Powiązania:: https://bibliotekanauki.pl/articles/99782.pdf
Data publikacji:: 2015
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: thermal error
real-time compensation
cutting process
Opis:: The challenge to be addressed by this paper is to extend the common machine tool thermal compensation models considering only internal heat sources to include the effects of the cutting process. Although real-time software compensations of thermal errors exist, the majority of these models only presume machine tools under load-free rotation of the main spindle without any reference to rough machining. The machining process is completely neglected in spite of the fact that it represents a significant heat source and causes workpiece inaccuracy. This paper presents a real-time compensation of three-axis vertical milling centre thermal errors including the cutting process effect. The simulation is based on dynamic modelling using transfer functions. The model was implemented into a standard CNC controller of a three-axis vertical milling centre to compensate for thermal errors in real time. The inputs of the compensation algorithm are the spindle rotational speed, the 5 temperatures of the machine structure and spindle power. A reduction of thermal errors achieved by using the new approximation TF model including cutting process impact is up to 79% for steel cutting tests with different cutting conditions.
Źródło:: Journal of Machine Engineering; 2015, 15, 3; 5-18
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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