scholarly journals A New Model for the Itinerary Definition of Real-Time Imprecise Mobile Agents

2006 ◽  
Author(s):  
Luciana Rech ◽  
Carlos Montez ◽  
Romulo de Oliveira
Keyword(s):  
Real Time ◽  
Mobile Agents ◽  
New Model ◽  
Definition Of

RoadRank Algorithm – A Novel Method to Calculate Traffic Index for an Area

2014 ◽  
Vol 1079-1080 ◽  
pp. 769-775
Author(s):  
Fan Wang ◽  
Yu Fang
Keyword(s):  
Information System ◽  
Real Time ◽  
Traffic Information ◽  
Area Index ◽  
New Model ◽  
Real Time Traffic ◽  
Information Center ◽  
Novel Method ◽  
Definition Of

Traffic index hasbeen used to provide accurate traffic information to users. Many models havebeen developed to calculate the index for a road, but how to define andcalculate the index for an area still needs more investigation. Here we proposea new model for area index, including a definition of area index itself and a methodto calculate it. But this model can’t be widely used, for some innatelimitations. So we put forward another method based on well-known algorithmPageRank to calculate area index. To test the effectiveness, we apply ouralgorithmto conduct several experiments. Our experiments using standard trafficstatistics provided by ShanghaiTraffic Information Center (STIC), show our method have values for real-time traffic information system.

A Real Time Control Architecture for Continuously Managing Patients in a Care Unit

1995 ◽  
Vol 34 (05) ◽  
pp. 475-488
Author(s):  
B. Seroussi ◽  
J. F. Boisvieux ◽  
V. Morice
Keyword(s):  
Real Time ◽  
Linear Time ◽  
Treatment Plan ◽  
Control Architecture ◽  
Real Time Control ◽  
Time Representation ◽  
Time Control ◽  
Continuous Support ◽  
Definition Of ◽  
Computerized System

Abstract:The monitoring and treatment of patients in a care unit is a complex task in which even the most experienced clinicians can make errors. A hemato-oncology department in which patients undergo chemotherapy asked for a computerized system able to provide intelligent and continuous support in this task. One issue in building such a system is the definition of a control architecture able to manage, in real time, a treatment plan containing prescriptions and protocols in which temporal constraints are expressed in various ways, that is, which supervises the treatment, including controlling the timely execution of prescriptions and suggesting modifications to the plan according to the patient’s evolving condition. The system to solve these issues, called SEPIA, has to manage the dynamic, processes involved in patient care. Its role is to generate, in real time, commands for the patient’s care (execution of tests, administration of drugs) from a plan, and to monitor the patient’s state so that it may propose actions updating the plan. The necessity of an explicit time representation is shown. We propose using a linear time structure towards the past, with precise and absolute dates, open towards the future, and with imprecise and relative dates. Temporal relative scales are introduced to facilitate knowledge representation and access.

Design and development of a backstepping controller autopilot for fixed-wing UAVs

2021 ◽  
pp. 1-27
Author(s):  
D. Sartori ◽  
F. Quagliotti ◽  
M.J. Rutherford ◽  
K.P. Valavanis
Keyword(s):  
Real Time ◽  
Control Law ◽  
Parametric Uncertainties ◽  
Hardware In The Loop ◽  
Aircraft Control ◽  
Backstepping Approach ◽  
Small Uav ◽  
Backstepping Controller ◽  
Definition Of ◽  
Performance Results

Abstract Backstepping represents a promising control law for fixed-wing Unmanned Aerial Vehicles (UAVs). Its non-linearity and its adaptation capabilities guarantee adequate control performance over the whole flight envelope, even when the aircraft model is affected by parametric uncertainties. In the literature, several works apply backstepping controllers to various aspects of fixed-wing UAV flight. Unfortunately, many of them have not been implemented in a real-time controller, and only few attempt simultaneous longitudinal and lateral–directional aircraft control. In this paper, an existing backstepping approach able to control longitudinal and lateral–directional motions is adapted for the definition of a control strategy suitable for small UAV autopilots. Rapidly changing inner-loop variables are controlled with non-adaptive backstepping, while slower outer loop navigation variables are Proportional–Integral–Derivative (PID) controlled. The controller is evaluated through numerical simulations for two very diverse fixed-wing aircraft performing complex manoeuvres. The controller behaviour with model parametric uncertainties or in presence of noise is also tested. The performance results of a real-time implementation on a microcontroller are evaluated through hardware-in-the-loop simulation.

scholarly journals Electronic Orientation Aid for Visually Impaired using Graphics Processing Unit (GPU)

2020 ◽  
Vol 32 ◽  
pp. 03054
Author(s):  
Akshata Parab ◽  
Rashmi Nagare ◽  
Omkar Kolambekar ◽  
Parag Patil
Keyword(s):  
Real Time ◽  
Visually Impaired ◽  
Graphics Processing Unit ◽  
Human Perception ◽  
Processing Unit ◽  
Surrounding Environment ◽  
Visually Impaired People ◽  
Impaired People ◽  
Definition Of ◽  
Graphics Processing

Vision is one of the very essential human senses and it plays a major role in human perception about surrounding environment. But for people with visual impairment their definition of vision is different. Visually impaired people are often unaware of dangers in front of them, even in familiar environment. This study proposes a real time guiding system for visually impaired people for solving their navigation problem and to travel without any difficulty. This system will help the visually impaired people by detecting the objects and giving necessary information about that object. This information may include what the object is, its location, its precision, distance from the visually impaired etc. All these information will be conveyed to the person through audio commands so that they can navigate freely anywhere anytime with no or minimal assistance. Object detection is done using You Only Look Once (YOLO) algorithm. As the process of capturing the video/images and sending it to the main module has to be carried at greater speed, Graphics Processing Unit (GPU) is used. This will help in enhancing the overall speed of the system and will help the visually Impaired to get the maximum necessary instructions as quickly as possible. The process starts from capturing the real time video, sending it for analysis and processing and get the calculated results. The results obtained from analysis are conveyed to user by means of hearing aid. As a result by this system the blind or the visually impaired people can visualize the surrounding environment and travel freely from source to destination on their own.

What are the Best Thermodynamic Quantity and Function to Define a Front in Gridded Model Output?

2019 ◽  
Vol 100 (5) ◽  
pp. 873-895 ◽  
Author(s):  
Carl M. Thomas ◽  
David M. Schultz
Keyword(s):  
Real Time ◽  
Potential Temperature ◽  
Thermodynamic Quantity ◽  
Kinematics And Dynamics ◽  
Horizontal Gradient ◽  
Model Output ◽  
Equivalent Potential Temperature ◽  
Thermal Front ◽  
Equivalent Potential ◽  
Definition Of

AbstractFronts can be computed from gridded datasets such as numerical model output and reanalyses, resulting in automated surface frontal charts and climatologies. Defining automated fronts requires quantities (e.g., potential temperature, equivalent potential temperature, wind shifts) and kinematic functions (e.g., gradient, thermal front parameter, and frontogenesis). Which are the most appropriate to use in different applications remains an open question. This question is investigated using two quantities (potential temperature and equivalent potential temperature) and three functions (magnitude of the horizontal gradient, thermal front parameter, and frontogenesis) from both the context of real-time surface analysis and climatologies from 38 years of reanalyses. The strengths of potential temperature to identify fronts are that it represents the thermal gradients and its direct association with the kinematics and dynamics of fronts. Although climatologies using potential temperature show features associated with extratropical cyclones in the storm tracks, climatologies using equivalent potential temperature include moisture gradients within air masses, most notably at low latitudes that are unrelated to the traditional definition of a front, but may be representative of a broader definition of an airmass boundary. These results help to explain previously published frontal climatologies featuring maxima of fronts in the subtropics and tropics. The best function depends upon the purpose of the analysis, but Petterssen frontogenesis is attractive, both for real-time analysis and long-term climatologies, in part because of its link to the kinematics and dynamics of fronts. Finally, this study challenges the conventional definition of a front as an airmass boundary and suggests that a new, dynamically based definition would be useful for some applications.

scholarly journals Bisimulation from Open Maps

1994 ◽  
Vol 1 (7) ◽  
Author(s):  
André Joyal ◽  
Mogens Nielsen ◽  
Glynn Winskel
Keyword(s):  
Petri Nets ◽  
Parallel Computation ◽  
Transition Systems ◽  
New Model ◽  
Event Structures ◽  
Uniform Definition ◽  
Refinement Operators ◽  
Definition Of ◽  
Open Maps

An abstract definition of bisimulation is presented. It enables a uniform definition of bisimulation across a range of different models for parallel computation presented as categories. As examples, transition systems, synchronisation trees, transition systems with independence (an abstraction from Petri nets) and labelled event structures are considered. On transition systems the abstract definition readily specialises to Milner's strong bisimulation. On event structures it explains and leads to a revision of history-preserving bisimulation of Rabinovitch and Traktenbrot, Goltz and van Glabeek. A tie-up with open maps in a (pre)topos, as they appear in the work of Joyal and Moerdijk, brings to light a promising new model, presheaves on categories of pomsets, into which the usual category of labelled event structures embeds fully and faithfully. As an indication of its promise, this new presheaf model has ``refinement'' operators, though further work is required to justify their appropriateness and understand their relation to previous attempts. The general approach yields a logic, generalising Hennessy-Milner logic, which is characteristic for the generalised notion of bisimulation.

scholarly journals Desarrollo de entornos para la creación y reproducción de Docusquemas

2005 ◽  
Author(s):  
Jesús Caudeli Tomé ◽  
José Jesús García Rueda
Keyword(s):  
Multimedia Learning ◽  
Software Tools ◽  
Web Pages ◽  
Web Browser ◽  
Multimedia Presentations ◽  
Java Applet ◽  
New Model ◽  
Written Text ◽  
Java Language ◽  
Definition Of

El Docusquema representa un nuevo modelo para construir presentaciones multimedia destinadas al aprendizaje basándose en los principios del Aprendizaje Receptivo Significativo. Este modelo otorga mayor protagonismo a la imagen y el sonido frente al texto escrito tradicional. En este proyecto se ha definido un lenguaje para describir los Docusquemas utilizando XML, y se han desarrollado dos herramientas software utilizando el lenguaje Java. La función de la primera de ellas es generar y editar Docusquemas, mientras que la segunda es un applet que permite reproducirlos a través de Internet, integrando las presentaciones en páginas web.Development of Environments for the Creation and Display of Docuschemas.AbstractDocuschemas are a new model for the construction of multimedia, learning oriented presentations based on the Meaningful Receptive Learning. This model gives a more important role to image and sound, considering traditional written text a secondary option. In this project a language for the definition of Docuschemas has been defined using XML, and two software tools have been developed using the Java language. The first one’s aim is to generate and edit Docuschemas, while the second is an a Java applet to display them in a Web browser, integrating the multimedia presentations into Web pages.

scholarly journals Development of a technique for DNA detection and identification of toxigenic strains of Clostridium botulinum types A, B, E by the Real-Time PCR method

2018 ◽  
Vol 2 (4) ◽  
pp. 36-43
Keyword(s):  
Botulinum Toxin ◽  
Real Time ◽  
Clostridium Botulinum ◽  
Specific Activity ◽  
Food Samples ◽  
Analytical Sensitivity ◽  
Detection And Identification ◽  
The Central Nervous System ◽  
Toxigenic Strains ◽  
Definition Of

Botulism is dangerous toxic infection caused by a toxin produced by the bacterium Clostridium botulinum. The mortality rate from botulism can reach 70% of all cases of illness in case of untimely initiation of treatment. The pathogenesis of botulism involves the damage to the central nervous system by a toxin produced by C. botulinum. Currently there are seven recognized antigenic types of this toxin. Botulinum toxin is included into the group of biological agents and it is one of the most likely agents to be used in a biological attack. Since botulinum neurotoxin is a complex nucleoprotein complex and the traces of DNA can be detected even in purified toxin preparations, we have elaborated a technique for detecting and identifying DNA of toxigenic strains of Clostridium botulinum types A, B, E, that cause human botulism in most cases. This technique is based on the the detection of residual amounts of this DNA in botulinum toxin using multiplex real-time polymerase chain reaction (PCR) assay with fluorescent hybridization detection. The main obstacle to development of a technique for the detection and identification of DNA of toxigenic strains is the high variability of the genes responsible for the synthesis of botulinum toxin. We have established a region of the gene with the lowest homology in all strains. This requirement is met by a fragment of the bont gene that encodes a light chain of a neurotoxin and is highly conserved in the strains of C. botulinum producing one type of toxin. The paper represents the results of the definition of analytical sensitivity and specific activity of the developed method. The specificity of the determination is 100%, the analytical sensitivity – 1×10 2 mc./ml. The method can be used to analyze food, samples of clinical materials and environmental samples suspected of being contaminated with toxigenic strains of C. botulinum

scholarly journals THE ISSUE OF THE TRANSITION TO THE DIGITAL ROUBLE

2021 ◽  
pp. 198-208
Author(s):  
Иван Владимирович Кисаров
Keyword(s):  
Monetary Policy ◽  
Point Of View ◽  
Economic Point ◽  
New Model ◽  
Digital Currency ◽  
Definition Of ◽  
Monetary Circulation

Цель статьи - рассмотреть причины и императивы перехода валюты в цифровое состояние. Дано определение цифрового рубля, его особенностей с экономической точки зрения. Указаны возможные технологические решения при внедрении цифровой валюты. Отражено возможное влияние ввода цифрового рубля на денежно-кредитную политику, а также предложен вариант внедрения новой формы рубля в экономику. Выделены необходимые качества, которым должен обладать цифровой рубль. Научная новизна заключается в акцентировании внимания на проблемах, которые могут возникнуть в связи с переходом к новой модели цифрового кредитно-денежного обращения. The purpose of the article is to consider the reasons and imperatives of the transition of the currency to a digital state. The author gives the definition of the digital rouble describes its features from an economic point of view. The research indicates possible technological solutions for digital currency implementation and possible impact of the introduction of the digital rouble on monetary policy. The author highlights some necessary qualities characteristic for a digital ruble. The scientific novelty is to focus on the problems that may arise from the transition to a new model of digital monetary circulation.

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