Macroscopic Fundamental Diagrams(MFDs)are valuable for designing and evaluating network-wide traffic management *** obtaining empirical MFDs can be expensive,analytical methodologies are crucial to estimate variations...
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Macroscopic Fundamental Diagrams(MFDs)are valuable for designing and evaluating network-wide traffic management *** obtaining empirical MFDs can be expensive,analytical methodologies are crucial to estimate variations in MFD shapes under different control strategies and predict their efficacy in mitigating *** of urban grid networks'abstractions can provide an inexpensive methodology to obtain a qualitative understanding of impacts of control ***,existing abstractions are valid only for simple intersection layouts with unidirectional and single-lane links and two conflicting movement ***,the real intersections are more complex,with multiple incoming and outgoing lanes,heterogeneous incoming links'capacities and several conflicting movement *** this end,we consider a grid network with differences in capacities of horizontal and vertical directions,allowing us to investigate the characteristics of control policies that can avoid pernicious gridlock in heterogeneous *** develop a new,more comprehensive network abstraction of such grid networks to analyze and compare the impacts of two families of decentralized Traffic Signal Controllers(TSCs)on the network's *** obtained theoretical insights are verified using microsimulation results of grid networks with multiple signalized *** analyses suggest that considering both upstream and downstream congestion information in deciding signal plans can encourage more evenly distributed traffic in the network,making them more robust and effective at all congestion *** study provides a framework to understand general expectations from decentralized control policies when network inhomogeneity arises due to variations in incoming link capacities and turning directions.
Solid-state dye-sensitized solar cell (ss-DSSC) has drawn the recent contemplation of photovoltaic (PV) fraternity as a viable substitute for fluid electrolyte for improving power generation efficiency, durability and...
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作者：
Salama, Wessam M.Aly, Moustafa H.Department of Computer Engineering
Faculty of Engineering Pharos University Canal El Mahmoudia Street Beside Green Plaza Complex 21648 Alexandria Egypt OSA Member
Department of Electronics and Communications Engineering College of Engineering and Technology Arab Academy for Science Technology and Marine Transport Alexandria1029 Egypt
Recent studies on channel estimation in wireless communication systems have focused on deep learning methods. Our primary contribution is based on the use of DenseNet121 hybrid with Random Forest (RF), Gated Recurrent...
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Recent studies on channel estimation in wireless communication systems have focused on deep learning methods. Our primary contribution is based on the use of DenseNet121 hybrid with Random Forest (RF), Gated Recurrent Units (GRU), Long Short-Term Memory Networks (LSTM), and Recurrent Neural Networks (RNN) to improve the channel estimation and lower the error rate. In order to mitigate inter-symbol interference and map the datasets, this paper introduces M-quadrature amplitude modulation (16-QAM) and orthogonal frequency division multiplexing (OFDM), which is based on quadrature phase shift keying (QPSK). Additionally, the existence or lack of cyclic prefixes forms the basis of our simulation. Additionally, the suggested models are investigated using pilot samples 2, 4, 8, and 64. Labeled OFDM signal samples, where the labels match the signal received after applying OFDM and passing through the medium, are used to train the proposed models. The DenseNet121 functions as a powerful feature extractor to extract intricate spatial information from received signal data. Sequential models like as RNN, LSTM, and GRU are used to model temporal dependencies in the retrieved features. RF is also utilized to exploit non-linear relationships and interactions between features to further increase prediction accuracy and reduce bit error rate (BER). By comparing the models using key metrics like accuracy, bit error rate (BER), and mean squared error (MSE), superior performance is attained based on the DenseNet121_RNN_GRU_RF model. Additionally, the DLMs are assessed against traditional methods like minimal mean square error (MMSE) and least squares (LS). Using the DenseNet121_RNN_GRU_RF model indicates a considerable gain over alternative architectures, with an improvement of 36.3% over DensNet121-RNN-LSTM-RF, according to a comparison of the suggested models without cyclic prefix for OFDM_QPSK. The improvement in percentages of roughly 63.3% over DensNet121-RNN-LSTM, 68.18% over De
Magnesium(Mg)and its alloys have recently gained increasing attention in the biomedical field as promising biodegradable materials with harmless degradation ***-based alloys have a wide range of biomedical application...
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Magnesium(Mg)and its alloys have recently gained increasing attention in the biomedical field as promising biodegradable materials with harmless degradation ***-based alloys have a wide range of biomedical applications because of their outstanding biocompatibility and unique mechanical *** use of Mg-based biomedical devices eliminates the need for post-healing biomaterial removal surgery and minimizes the negative consequences of the implantation of permanent biomaterials,including stress shielding and undesired metal ion release in the *** paper provides a literature review on the properties and manufacturing methods of Mgbased alloys for biomedical applications,including orthopedic implants,cardiovascular applications,surgical wires and staplers,and antitumor *** application of Mg-based biomaterials is investigated from a biological perspective,including matching functional properties,biocompatibility,host tissue responses,and anti-microbial strategies,along with potential additive manufacturing technologies for these ***,an outlook is presented to provide recommendations for Mg-based biomaterials in the future.
Bangladesh has recently adopted the worldwide trend of digitalization, namely in the area of financial activities. In Bangladesh, the centralized nature of digital payment systems poses notable obstacles, such as leng...
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Retinal vessel segmentation in Optical Coherence Tomography Angiography (OCTA) images constitutes a crucial task in ophthalmology and medical image analysis. It involves identifying and delineating blood vessels withi...
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Innately designed to induce physiological changes,pharmaceuticals are foreknowingly hazardous to the *** oxidation processes(AOPs)are recognized as a set of contemporary and highly efficient methods being used as a co...
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Innately designed to induce physiological changes,pharmaceuticals are foreknowingly hazardous to the *** oxidation processes(AOPs)are recognized as a set of contemporary and highly efficient methods being used as a contrivance for the removal of pharmaceutical *** reactive oxygen species(ROS)are formed in these processes to interact and contribute directly toward the oxidation of target contaminant(s),a profound insight regarding the mechanisms of ROS leading to the degradation of pharmaceuticals is fundamentally *** conceptualization of some specific reaction mechanisms allows the design of an effective and safe degradation process that can empirically reduce the environmental impact of *** review mainly deliberates themechanistic reaction pathways for ROS-mediated degradation of pharmaceuticals often leading to complete mineralization,with a focus on acetaminophen as a drug waste model.
Bangla is the sixth most widely spoken language worldwide, making the recognition of handwritten characters in this language an important task. However, recognizing Bangla characters is challenging due to the large nu...
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This study investigates the combined berth allocation problem (BAP) and quay crane allocation problem (QCAP) while considering a multi-quay setting. First, a mixed integer linear programming mathematical model is deve...
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This review presents a novel and comprehensive analysis of various sealants used in diverse coating applications, focusing on their role in corrosion prevention. Sealants are crucial in shielding the coating materials...
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