1,985 research outputs found

    Fuzzy P-spaces games and metacompactness

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    Fuzzy P-spaces are introduced and a characterization for the same in terms of a particular type of fuzzy topological game is obtained. Further some applications of fuzzy P-spaces in product -metacompact spaces are also investigated

    Finitistic spaces in L-topological spaces

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    Abstract In this paper the concept of finitistic spaces in L-topological spaces is introduced by means of α-Q-covers of open Lsubsets. Also a characterization of finitistic spaces in the weakly induced L-topological spaces is obtained. Moreover the behavior of finitistic spaces under various types of maps such as fuzzy perfect maps is also investigated. 4

    Fuzzy topological games, alpha-Metacompactness and alpha-perfect maps

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    The behavior of Fuzzy Toplogical Games and α-metacompactness under α-perfect maps are studied. Also an attempt is made to bring out some close relationships between Fuzzy Toplogical Games and α-metacompactness

    Fuzzy P-spaces games and metacompactness

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    Fuzzy P-spaces are introduced and a characterization for the same in terms of a particular type of fuzzy topological game is obtained. Further some applications of fuzzy P-spaces in product -metacompact spaces are also investigated

    AI and IoT-Enabled smart exoskeleton system for rehabilitation of paralyzed people in connected communities

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    In recent years, the number of cases of spinal cord injuries, stroke and other nervous impairments have led to an increase in the number of paralyzed patients worldwide. Rehabilitation that can aid and enhance the lives of such patients is the need of the hour. Exoskeletons have been found as one of the popular means of rehabilitation. The existing exoskeletons use techniques that impose limitations on adaptability, instant response and continuous control. Also most of them are expensive, bulky, and requires high level of training. To overcome all the above limitations, this paper introduces an Artificial Intelligence (AI) powered Smart and light weight Exoskeleton System (AI-IoT-SES) which receives data from various sensors, classifies them intelligently and generates the desired commands via Internet of Things (IoT) for rendering rehabilitation and support with the help of caretakers for paralyzed patients in smart and connected communities. In the proposed system, the signals collected from the exoskeleton sensors are processed using AI-assisted navigation module, and helps the caretakers in guiding, communicating and controlling the movements of the exoskeleton integrated to the patients. The navigation module uses AI and IoT enabled Simultaneous Localization and Mapping (SLAM). The casualties of a paralyzed person are reduced by commissioning the IoT platform to exchange data from the intelligent sensors with the remote location of the caretaker to monitor the real time movement and navigation of the exoskeleton. The automated exoskeleton detects and take decisions on navigation thereby improving the life conditions of such patients. The experimental results simulated using MATLAB shows that the proposed system is the ideal method for rendering rehabilitation and support for paralyzed patients in smart communities. © 2013 IEEE. **Please note that there are multiple authors for this article therefore only the name of the first 5 including Federation University Australia affiliate “Venki Balasubramanian” is provided in this record*

    Total Domination, Separated Clusters, CD-Coloring: Algorithms and Hardness

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    Domination and coloring are two classic problems in graph theory. The major focus of this paper is the CD-COLORING problem which combines the flavours of domination and colouring. Let GG be an undirected graph. A proper vertex coloring of GG is a cdcoloringcd-coloring if each color class has a dominating vertex in GG. The minimum integer kk for which there exists a cdcoloringcd-coloring of GG using kk colors is called the cd-chromatic number, χcd(G)\chi_{cd}(G). A set SV(G)S\subseteq V(G) is a total dominating set if any vertex in GG has a neighbor in SS. The total domination number, γt(G)\gamma_t(G) of GG is the minimum integer kk such that GG has a total dominating set of size kk. A set SV(G)S\subseteq V(G) is a separatedclusterseparated-cluster if no two vertices in SS lie at a distance 2 in GG. The separated-cluster number, ωs(G)\omega_s(G), of GG is the maximum integer kk such that GG has a separated-cluster of size kk. In this paper, first we explore the connection between CD-COLORING and TOTAL DOMINATION. We prove that CD-COLORING and TOTAL DOMINATION are NP-Complete on triangle-free dd-regular graphs for each fixed integer d3d\geq 3. We also study the relationship between the parameters χcd(G)\chi_{cd}(G) and ωs(G)\omega_s(G). Analogous to the well-known notion of `perfectness', here we introduce the notion of `cd-perfectness'. We prove a sufficient condition for a graph GG to be cd-perfect (i.e. χcd(H)=ωs(H)\chi_{cd}(H)= \omega_s(H), for any induced subgraph HH of GG) which is also necessary for certain graph classes (like triangle-free graphs). Here, we propose a generalized framework via which we obtain several exciting consequences in the algorithmic complexities of special graph classes. In addition, we settle an open problem by showing that the SEPARATED-CLUSTER is polynomially solvable for interval graphs

    SLAV-Sim: A Framework for Self-Learning Autonomous Vehicle Simulation:SLAV-Sim

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    With the advent of autonomous vehicles, sensors and algorithm testing have become crucial parts of the autonomous vehicle development cycle. Having access to real-world sensors and vehicles is a dream for researchers and small-scale original equipment manufacturers (OEMs) due to the software and hardware development life-cycle duration and high costs. Therefore, simulator-based virtual testing has gained traction over the years as the preferred testing method due to its low cost, efficiency, and effectiveness in executing a wide range of testing scenarios. Companies like ANSYS and NVIDIA have come up with robust simulators, and open-source simulators such as CARLA have also populated the market. However, there is a lack of lightweight and simple simulators catering to specific test cases. In this paper, we introduce the SLAV-Sim, a lightweight simulator that specifically trains the behaviour of a self-learning autonomous vehicle. This simulator has been created using the Unity engine and provides an end-to-end virtual testing framework for different reinforcement learning (RL) algorithms in a variety of scenarios using camera sensors and raycasts

    An adaptive and flexible brain energized full body exoskeleton with IoT edge for assisting the paralyzed patients

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    The paralyzed population is increasing worldwide due to stroke, spinal code injury, post-polio, and other related diseases. Different assistive technologies are used to improve the physical and mental health of the affected patients. Exoskeletons have emerged as one of the most promising technology to provide movement and rehabilitation for the paralyzed. But exoskeletons are limited by the constraints of weight, flexibility, and adaptability. To resolve these issues, we propose an adaptive and flexible Brain Energized Full Body Exoskeleton (BFBE) for assisting the paralyzed people. This paper describes the design, control, and testing of BFBE with 15 degrees of freedom (DoF) for assisting the users in their daily activities. The flexibility is incorporated into the system by a modular design approach. The brain signals captured by the Electroencephalogram (EEG) sensors are used for controlling the movements of BFBE. The processing happens at the edge, reducing delay in decision making and the system is further integrated with an IoT module that helps to send an alert message to multiple caregivers in case of an emergency. The potential energy harvesting is used in the system to solve the power issues related to the exoskeleton. The stability in the gait cycle is ensured by using adaptive sensory feedback. The system validation is done by using six natural movements on ten different paralyzed persons. The system recognizes human intensions with an accuracy of 85%. The result shows that BFBE can be an efficient method for providing assistance and rehabilitation for paralyzed patients. © 2013 IEEE. **Please note that there are multiple authors for this article therefore only the name of the first 5 including Federation University Australia affiliate “Venki Balasubramanian” is provided in this record*
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