252 research outputs found

    Electronic Visits in Primary Care: Modeling, Analysis, and Scheduling Policies

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    Pakistan is endowed with vast coal reserves, primarily in Sindh, totaling 184.623 billion tons. Our country's market has been rapidly expanding. As we all know, accidents are becoming more often in mines due to a shortage of competent workers, miners' safety cannot be guaranteed, and coal manipulation is impossible. Men who are currently employed in coal mining must confront environmental constraints. Temperature, carbon dioxide, and methane are all threats to them. As a result, we must provide security for the men and women who are now employed in coal mining. The goal of this study is to provide a solution to mining through communication and security monitoring. Coal mining has a unique function in the modern world; it has the potential to save the lives of coal miners by creating particular gadgets that can be extremely beneficial to the industry's workers. People working in underground coal mines must utilize several characteristics such as smart helmets with sensors such as removers, collision detectors, gas detectors, and the helmet. Here, we must organize our circuit within the Smart Helmet in order to provide security to the man who is now employed in coal mining. Coal mining remains a hazardous activity that can have a variety of negative environmental implications, such as the discharge of hazardous gases during mining operations. The helmet is equipped with a Wi-Fi-based monitoring system that communicates with all of the trackers via Wi-Fi networks to provide data. As a result, the Smart Helmet indication takes the required precautions to avoid any potentially dangerous situations and sends out an alert through buzzer and Cloud Based Monitoring. The data is collected using ESP32 Arduino created tracker circuitry. It aids in the mapping of worker locations

    Guest editorial: special issue on high mobility wirelesscommunications

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    he high-speed railway and high-way networks are now expanding at a phenomenal speed in China and in many other parts of the world. The related broadband wireless communication over high-speed trains and highway vehicles is a very challenging task due to hostile transmission channel conditions. The demand for such services is growing rapidly, following the proliferation of laptop/tablet computers and smart phones. This motivates the research on wireless communications in the high mobility environments. This special issue aims at putting together the new achievements and developments in this field. There are 11 papers in this special issue, which have been organized into three thematic groups. The first group of4 papers deals with the rapidly time-varying channelmeasurement, modeling and estimation. The second group of 3 papers addresses the Doppler effects andsignal detection. The last group of 4 papers contributesto the relays, networking coding, and the fast handover schemes for high mobility scenarios.   &nbsp

    Biosorption of Arsenic (III) by Using Lemon Peel Powder as Low Cost Effective Biosorbent

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    The use of lemon peel powder, a novel, low-cost, and sustainable biosorbent derived from food waste, to remove arsenic has largely gone unexplored. The feasibility and viability of the As (III) biosorption abilities of lemon peel powder are compared in this study. The parameters such as contact time, pH, the amount of lemon peels used, the initial arsenic concentration, and temperature all had an effect on the sorption process. Thermodynamic, kinetic, and equilibrium were all evaluated. The optimal pH was 6.0, and it lasted until pH 8 with 72.34% removal efficiency. Lemon peel (LP) has a pH PZC value of 7 and a surface pH of 7. The analysis of kinetics revealed that the biosorption was regulated by a second-order reaction, as well as the fact that the catalytic region of the biosorbent was heterogeneous; however, the biosorption process was better defined by the Freundlich and Temkin isotherms. Finally, it is possible to remove arsenic (III) using waste content. Thermodynamic and equilibrium analysis have shown that sorption is a natural process that is spontaneous, beneficial, and endothermic. In addition, Fourier Transfer Infrared Spectroscopy (FTIR) research shows that arsenic reacts with metal oxides and the -OH functional group in lemon peel. These findings indicate that this peel can be used to remove arsenic from a simulated aqueous solution as a valuable, low-cost sorbent. This research lays the groundwork for the potential production of an effective filtration device that uses citrus peel powder as a low-cost, innovative, and long-lasting biosorbent to treat water polluted with arsenic (III). Keywords: Arsenic, Equilibrium, FTIR, Isotherms, Kinetic, PZC, Thermodynami DOI: 10.7176/JNSR/12-14-01 Publication date:July 31st 202

    Using Software Defined Networking to manage and control IEC61850-based systems

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    Smart Grid makes use of Information and Communications Technology (ICT) infrastruc- tures for the management of the generation, transmission and consumption of electrical energy to increase the efficiency of remote control and automation systems. One of the most widely accepted standards for power system communication is IEC 61850, which defines services and protocols with different requirements that need to be fulfilled with traffic engineering techniques. In this paper, we discuss the implementation of a novel management framework to meet these requirements through control and monitoring tools that provide a global view of the network. With this purpose, we provide an overview of relevant Software Defined Networking (SDN) related approaches, and we describe an archi- tecture based on OpenFlow that establishes different types of flows according to their needs and the network status. We present the implementation of the architecture and evaluate its capabilities using the Mininet network emulator.     &nbsp

    Portal of Research Methods and Methodologies for Research Projects and Degree Projects

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    : Research Projects and Degree Projects) is the latest video encoding standard that achieves much better compression efficiency compared to the earlier encoding standards. Satellite channels have a long round trip time (RTT) making it difficult to use packet acknowledgments. Real-time video streaming applications preclude such packet acknowledgments in satellite networks due to strict delay constraints. We propose acombined use of Turbo Coding (TC) and Network Coding (NC) techniques to achieve better video quality over the noisy satellite links using UDP at the transport layer. We evaluate the performance improvement of turbo network coding (TNCUDP) over thetraditional turbo-coded (TC-UDP) protocol for HEVC video streaming in satellite networks. The simulation results show that compared to TC-UDP, the proposed scheme achieves PSNR improvements ranging from 14-20 dB for poor channel conditions (1-2 dB) for the two selected video sequences.   &nbsp
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