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Artykuły w czasopismach na temat „Doubly spread channels”

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Data publikacji: 6 września 2023

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1

Zeng, Wen-Jun, and Xue Jiang. "Time reversal communication over doubly spread channels." Journal of the Acoustical Society of America 132, no. 5 (2012): 3200–3212. http://dx.doi.org/10.1121/1.4754524.

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2

Eggen, Trym H., and James C. Preisig. "Underwater acoustic communication over doubly spread channels." Journal of the Acoustical Society of America 101, no. 5 (1997): 3157. http://dx.doi.org/10.1121/1.419090.

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3

Zeng, Wen-Jun, and Xue Jiang. "Time reversal communication over doubly spread channels." Journal of the Acoustical Society of America 134, no. 5 (2013): 4033. http://dx.doi.org/10.1121/1.4830726.

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4

Zhang, Yang, Qunfei Zhang, Chengbing He, and Chao Long. "Channel estimation for OTFS system over doubly spread sparse acoustic channels." China Communications 20, no. 1 (2023): 50–65. http://dx.doi.org/10.23919/jcc.2023.01.005.

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5

Zeng, Wen-Jun, and Wen Xu. "Fast estimation of sparse doubly spread acoustic channels." Journal of the Acoustical Society of America 131, no. 1 (2012): 303–17. http://dx.doi.org/10.1121/1.3665992.

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6

Drumheller, David Mark, and Dennis W. Ricker. "Receiver-transmitter optimization for detection in doubly spread channels." Journal of the Acoustical Society of America 89, no. 4 (1991): 1714–23. http://dx.doi.org/10.1121/1.401005.

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7

Li, Jie, Fangjiong Chen, Songzuo Liu, Hua Yu, and Fei Ji. "Estimation of Overspread Underwater Acoustic Channel Based on Low-Rank Matrix Recovery." Sensors 19, no. 22 (2019): 4976. http://dx.doi.org/10.3390/s19224976.

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In this paper, the estimation of overspread, i.e., doubly spread underwater acoustic (UWA) channels of strong dispersion is considered. We show that although the UWA channel dispersion causes the degeneration of channel sparsity, it leads to a low-rank structure especially when the channel delay-Doppler-spread function is separable in delay and Doppler domain. Therefore, we introduce the low-rank criterion to estimate the UWA channels, which can help to improve the estimation performance in the case of strong dispersion. The estimator is based on the discrete delay-Doppler-spread function repr

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8

McDonald, Vincent K., Richard C. Shockley, Joseph A. Rice, and Dale Green. "Probe signals for obtaining impulse response of doubly‐spread channels." Journal of the Acoustical Society of America 102, no. 5 (1997): 3118. http://dx.doi.org/10.1121/1.420575.

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9

Bhadouria, Vijay Singh, Monika Agrawal, and Ritesh Kumar. "An unsupervised clustering-based scale-lag receiver design approach for the doubly selective underwater acoustic channel." Journal of the Acoustical Society of America 152, no. 1 (2022): 342–53. http://dx.doi.org/10.1121/10.0012349.

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This paper details the architecture of a novel scale-lag rake receiver for the doubly selective underwater acoustic (UWA) channel. The shallow UWA channel is known to have a large Doppler spread. The cause of this is primarily due to the large spread of the angle of arrival of the received signal's paths. The Doppler scale value is dependent on the angle of arrival of the received signal. The Doppler spread is significant, and multiple Doppler scales are present in the UWA channel. Therefore, the receivers operating with only a single Doppler scale compensation perform sub-optimally. The optim

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10

Zeng, Wen-Jun, and Wen Xu. "Low complexity estimation and equalization of doubly spread underwater acoustic channels." Journal of the Acoustical Society of America 131, no. 4 (2012): 3275. http://dx.doi.org/10.1121/1.4708244.

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Edelson, Geoffrey S., and Luca Cazzanti. "Differential frequency hopping performance in doubly spread underwater acoustic communication channels." Journal of the Acoustical Society of America 140, no. 4 (2016): 3230. http://dx.doi.org/10.1121/1.4970209.

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12

Qu, Fengzhong, Xingyang Nie, and Wen Xu. "A Two-Stage Approach for the Estimation of Doubly Spread Acoustic Channels." IEEE Journal of Oceanic Engineering 40, no. 1 (2015): 131–43. http://dx.doi.org/10.1109/joe.2014.2307194.

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13

Acklin, Susan E. "Electrical Properties and Anion Permeability of Doubly Rectifying Junctions in the Leech Central Nervous System." Journal of Experimental Biology 137, no. 1 (1988): 1–11. http://dx.doi.org/10.1242/jeb.137.1.1.

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A study has been made of the electrical connections between touch sensory (T) neurones in the leech central nervous system (CNS) which display remarkable double rectification: depolarization spreads in both directions although hyperpolarization spreads poorly. Tests were made to determine whether this double rectification was a property of the junctions themselves or whether it resulted from changes in the length constants of processes intervening between the cell body and the junctions. Following trains of action potentials, T cells and their fine processes within the neuropile became hyperpo

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14

Ebihara, Tadashi, and Koichi Mizutani. "Underwater Acoustic Communication With an Orthogonal Signal Division Multiplexing Scheme in Doubly Spread Channels." IEEE Journal of Oceanic Engineering 39, no. 1 (2014): 47–58. http://dx.doi.org/10.1109/joe.2013.2245273.

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15

Zhang, Xing, Kang Song, Chunguo Li, and Luxi Yang. "A Novel Approach for the Estimation of Doubly Spread Acoustic Channels Based on Wavelet Transform." Applied Sciences 8, no. 1 (2018): 38. http://dx.doi.org/10.3390/app8010038.

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16

Zhao, Xiaochuan, Tao Peng, Ming Yang, and Wenbo Wang. "Doppler Spread Estimation by Tracking the Delay-Subspace for OFDM Systems in Doubly Selective Fading Channels." IEEE Signal Processing Letters 16, no. 3 (2009): 212–15. http://dx.doi.org/10.1109/lsp.2008.2010812.

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17

Laraway, Stephen Andrew, and Behrouz Farhang-Boroujeny. "Performance Analysis of a Multicarrier Spread Spectrum System in Doubly Dispersive Channels With Emphasis on HF Communications." IEEE Open Journal of the Communications Society 1 (2020): 462–76. http://dx.doi.org/10.1109/ojcoms.2020.2986323.

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18

Gass, J. H., D. L. Noneaker, and M. B. Pursley. "A comparison of slow-frequency-hop and direct-sequence spread-spectrum packet communications over doubly selective fading channels." IEEE Transactions on Communications 50, no. 8 (2002): 1236–39. http://dx.doi.org/10.1109/tcomm.2002.801459.

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19

Fan, Wei Wei, Lu Liu, You Wen Zhang, Ji Gang Dong, and Da Jun Sun. "An MMSE Approach to Channel Shorting for Underwater Acoustic FH-FSK Communication." Applied Mechanics and Materials 511-512 (February 2014): 334–41. http://dx.doi.org/10.4028/www.scientific.net/amm.511-512.334.

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Underwater acoustic channel is the biggest obstacle which causes the underwater acoustic communication falling behind the wireless communication. Generally speaking, underwater acoustic channel will represent doubly spread, i.e. multipath spread and Doppler spread. Also the multipath spread will be quite long in the underwater acoustic channel. For example, the multipath spread will be several milliseconds in the shallow sea and several seconds in the deep sea. Multipath spread will lead to Inter-Symbol Interference (ISI), and Doppler spread will cause the channel to be rapidly time-varying. A

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20

Sun, Dajun, Jie Wu, Xiaoping Hong, Changxin Liu, Hongyu Cui, and Boyu Si. "Iterative double-differential direct-sequence spread spectrum reception in underwater acoustic channel with time-varying Doppler shifts." Journal of the Acoustical Society of America 153, no. 2 (2023): 1027–41. http://dx.doi.org/10.1121/10.0017116.

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Conventional double differential phase-shift keying modulation amplifies the phase noise and performs poorly under the time-varying direct-sequence spread-spectrum (DSSS) communication system. Therefore, the authors propose an iterative reception for DSSS communication in time-varying underwater acoustic channels. First, bit-interleaved coded modulation with iterative decoding integrated with multi-symbol differential detection is used. Second, this paper uses cross correlation method to estimate and track the Doppler shift of each symbol. Based on Doppler estimates, a dynamic linear predictio

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21

Lazaropoulos, Athanasios G. "Broadband Transmission and Statistical Performance Properties of Overhead High-Voltage Transmission Networks." Journal of Computer Networks and Communications 2012 (2012): 1–16. http://dx.doi.org/10.1155/2012/875632.

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This paper considers broadband signal transmission and statistical performance properties of high-voltage/broadband over power lines (HV/BPL) channels associated with overhead power transmission. The overhead HV/BPL transmission channel is investigated with regard to its spectral behavior, its end-to-end signal attenuation, and its statistical performance metrics. It is found that the above features depend critically on the frequency, the overhead HV power grid type (150 kV, 275 kV, or 400 kV and single- or double-circuit), the coupling scheme applied, the physical properties of the cables use

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22

Sui, Tao, Yongxin Feng, Bo Qian, Fang Liu, Qiang Jiang, and Xiao Li. "Design and Analysis of a Multi−Carrier Orthogonal Double Bit Rate Differential Chaotic Shift Keying Communication System." Electronics 12, no. 8 (2023): 1785. http://dx.doi.org/10.3390/electronics12081785.

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A new multi−carrier orthogonal double bit rate differential chaotic shift keying (MC−ODBR−DCSK) communication system is presented in this paper. With two composite signals generated by an orthogonal chaotic signal generator as reference signals, 2M bits of information data are transmitted on M−channel subcarriers, improving transmission speed and energy efficiency. In addition, the receiver does not require a radio frequency (RF) delay circuit to demodulate the received data, which makes the system easier to implement. This paper analyzes Data−energy−to−Bit−energy Ratio (DBR) of the system. Th

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23

LEE, JunHwan, Tomoaki OHTSUKI, and Masao NAKAGAWA. "Turbo Equalized Double Window Cancellation and Combining Robust to Large Delay Spread Channel." IEICE Transactions on Communications E92-B, no. 2 (2009): 517–26. http://dx.doi.org/10.1587/transcom.e92.b.517.

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Sun, Zeng You, and Xia Ling. "Time-Varying Channel Multi-Carrier Modulation Technology Research." Applied Mechanics and Materials 513-517 (February 2014): 2680–86. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.2680.

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With frequency selective fading from multi-path characteristic and time selective fading from high speed mobility, double selective channel has become the typical context for the current wireless communication system. To realize high performance transmission in time-varying channel, this paper presents DAFT-OFDM multicarrier modulation scheme. The simulation results show that the scheme is applicable to time-varying fading channel, in which each path experiences independent Doppler spread. The scheme can also reduce ICI effectively.

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25

LEE, J., Y. KISHIYAMA, T. OHTSUKI, and M. NAKAGAWA. "Double Window Cancellation and Combining for OFDM in Time-Invariant Large Delay Spread Channel." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E90-A, no. 10 (2007): 2066–78. http://dx.doi.org/10.1093/ietfec/e90-a.10.2066.

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26

Noneaker, D. L., and M. B. Pursley. "Selection of spreading sequences for direct-sequence spread-spectrum communications over a doubly selective fading channel." IEEE Transactions on Communications 42, no. 12 (1994): 3171–77. http://dx.doi.org/10.1109/26.339838.

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27

Chow, Lun. "Spread of smoke and heat along narrow air cavity in double-skin façade fires." Thermal Science 18, suppl.2 (2014): 405–16. http://dx.doi.org/10.2298/tsci110918094c.

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A scenario on double-skin fa?ade fire was identified earlier for hazard assessment. A flashover room fire occurred next to the fa?ade, broke the interior glass pane and spread to the fa?ade cavity. As observed in experiments, hot gas moved up as a vertical channel flow for narrow fa?ade cavity. Heat and smoke spread along the narrow air cavity of a double-skin fa?ade will be studied in this paper. A simple mathematical model is developed from basic heat transfer theory for studying the vertical air temperature profiles of the hot gas flowing along the cavity. Assuming one-dimensional flow for

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28

Abenov, R. R., E. V. Rogozhnikov, Ya V. Kryukov, D. A. Pokamestov, and P. A. Abenova. "Experimental Study of a Transmission System Based on FBMC/OQAM." Journal of the Russian Universities. Radioelectronics 24, no. 6 (2021): 16–26. http://dx.doi.org/10.32603/1993-8985-2021-24-6-16-26.

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Introduction. This paper investigates a transmission system based on FBMC/OQAM multiplexing. This system is characterized by a high spectral efficiency, thereby attracting interest as an alternative transmission method in future wireless mobile communication standards. However, a disadvantage of the system is the high complexity of signal processing. There are numerous publications that study the FBMC/OQAM system from a theoretical perspective. This paper presents an experimental study of a transmission system based on FBMC/OQAM.Aim. Verification of a transmission system based on FBMC/OQAM mul

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29

Lee, Joohyoung, Jeongha An, Hyung-in Ra, and Kiman Kim. "Long-Range Acoustic Communication Using Differential Chirp Spread Spectrum." Applied Sciences 10, no. 24 (2020): 8835. http://dx.doi.org/10.3390/app10248835.

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Here, we propose a new modulation method using chirp spread spectrum (CSS) modulation to indicate the result of long-range acoustic communication (LRAC). CSS modulation had outstanding matched filter characteristics even though the channel was complex. The performance of the matched filter depends on the time–bandwidth product. We studied the method of using the same modulation method while increasing the amount of the time–bandwidth product. When differential encoding is applied, the de-modulation is made using the difference between the current symbol and the previous symbol. If the matched

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30

Dyachenko A. A., Blashenkov N. M., Berdnikov A. S., et al. "Specialized mass spectrometer for determining the isotopic composition of lithium by ERIAD (electrospray with in source atomization)." Technical Physics Letters 48, no. 7 (2022): 1. http://dx.doi.org/10.21883/tpl.2022.07.54025.18919.

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A specialized isotope mass spectrometer for determining the isotopic ratio of lithium by ERIAD (electrospray with atomization in an ion source) is described. The device uses a Mattuha-Herzog-type mass analyzer with double focusing to use ion beams with a large spread in energy and simultaneous registration of signals of both lithium isotopes (6Li and 7Li), and a two-channel receiver based on a doublet of microchannel plates. The gas-dynamic interface is built according to the Kontorowitz-Gray scheme; from the gas-dynamic point of view, it is "long", that is, the distance between the nozzle and

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31

Soré, Souleymane, Yacouba Sawadogo, Juste Isidore Bonkoungou, et al. "Detection, identification and characterization of extended-spectrum beta-lactamases producing Enterobacteriaceae in wastewater and salads marketed in Ouagadougou, Burkina Faso." International Journal of Biological and Chemical Sciences 14, no. 8 (2020): 2746–57. http://dx.doi.org/10.4314/ijbcs.v14i8.8.

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Extended spectrum beta-lactamase producing Enterobacteriaceae (ESBL-PE) represent a threat for failure of empirical antibiotic therapy and are associated with high mortality, morbidity and expenses. The aims of this study was to determine the prevalence of ESBL-PE and multidrug resistant enterobacteria (MDR), enterobacteria profil, investigate the associated resistance in wastewater and salads. After wastewater and salad sampling, enterobacteria was isoled on (EMB + 4μg / L cefotaxim). The stains of Enterobacteriaceae were identified by using biochemical methods and confirmed as ESBL by double

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32

Zhang, Lan, Xiao Mei Xu, Wei Feng, and You Gan Chen. "Doppler Estimation, Synchronization with HFM Signals for Underwater Acoustic Communications." Applied Mechanics and Materials 198-199 (September 2012): 1638–45. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.1638.

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This paper presents the application of the hyperbolic frequency modulated (HFM) signal to acoustic propagation in order to improve the performance of underwater acoustic (UWA) communications. Due to the large delay spread caused by multipath propagation and the severe Doppler Effect of the channel, we propose the using of double HFM signals as preambles for Doppler estimation, frame synchronization in UWA communications. A theoretical analysis about Doppler-invariability of HFM signals was provided firstly, then some numerical simulations about Doppler estimation were implemented, and experime

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33

Ovcharov, A. "Financial Crises and Financial Contagion in Latin America." World Economy and International Relations 67, no. 2 (2023): 104–13. http://dx.doi.org/10.20542/0131-2227-2023-67-2-104-113.

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The article deals with modern financial crises and features of their spread in Latin America. The classification of crises and ways of their identification are presented. The interconnectedness of modern financial crises is emphasized, which leads to the emergence of double and triple crises. Such crises have been repeatedly recorded in Argentina, Mexico, Uruguay and other countries. Over a period of more than fifty years, Latin America experienced 165 financial crises, with the largest share of them occurring in currency crises. The article proposes the indicator “crisis burden on the countri

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34

Qian, Sen, Qi Wu, Lishuang Ma, et al. "Simulation of FPMT with single chip MCP." Journal of Physics: Conference Series 2374, no. 1 (2022): 012135. http://dx.doi.org/10.1088/1742-6596/2374/1/012135.

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Micro-channel plate photomultiplier tube (MCP-PMT) is a kind of photosensitive device with single photon detection capability and great time resolution, which is also called Fast-PMT (FPMT). The MCP is the electron multiplier structure and in order to achieve single photon detection, two layers of MCPs are always used together. Due to the new-generation particle accelerators with high energy and luminosity, the time resolution of the detector is more important than single-photon detection capability. The single-chip-FPMT is expected to have a greater time resolution. Based on the CST STUDIO SU

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35

Onderwaater, Jaap, Jan Wams, and Hans Potters. "Geophysics in Oman." GeoArabia 1, no. 2 (1996): 299–324. http://dx.doi.org/10.2113/geoarabia0102299.

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ABSTRACT To date Petroleum Development Oman has acquired approximately 200,000 kilometers of 2-D and 20,000 square kilometers of 3-D seismic data. Five 3-D and one 2-D crews are operated by contractors. For 3-D surveys PDO uses 2 vibrator source groups recording a “double zig-zag”. The vibrators have GPS systems. The standard spread consists of 4 receiver lines of 120 active channels, spaced 200 meters apart, with receiver spacing of 50 meters. Bin size is 25 by 25 meters, multiplicity is 60 fold and the active spread is 6 kilometers. Most of the seismic data is processed inhouse by CGG. Addit

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36

Michaely, Erez. "Type Ia supernovae from wide white dwarfs triples." Monthly Notices of the Royal Astronomical Society 500, no. 4 (2020): 5543–51. http://dx.doi.org/10.1093/mnras/staa3623.

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ABSTRACT For ultra-wide systems (with outer orbit &gt;103 au) the galactic field is collisional. Hence, ultra-wide triple white dwarfs (TWDs) can be perturbed, by flyby stars, to sufficiently high outer eccentricity such that the triple becomes dynamically unstable. An unstable triple undergoes multiple binary–single resonant encounters between all three WDs. These encounters might result in a direct collision between any random two WDs and lead to a Type Ia supernova (SN Ia) event. In case where the multiple resonant encounters did not produce a collision a compact binary is formed (while

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37

Wu, Tao, Xiaofeng Zhang, Yiwen Li, Zhenghong Deng, and Yijie Huang. "On Spatial Smoothing for DOA Estimation of 2D Coherently Distributed Sources with Double Parallel Linear Arrays." Electronics 8, no. 3 (2019): 354. http://dx.doi.org/10.3390/electronics8030354.

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Considering coherently-distributed (CD) sources are correlated with each other, a two-dimensional (2D) coherent CD source model is proposed according to the characteristics of an underwater acoustic channel. Under the assumption of small angular spreads, rotational invariance relationships within and between subarrays of double parallel linear arrays are derived. As the covariance matrix of spatial smoothing obtained from receive vectors expressed by rotational invariance relationships is proven to be full rank, decoherence of the 2D coherent CD source is proposed by spatial smoothing of the d

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38

Deaconu, Adela, and Crina I. Filip. "The economy and accounting sophistication: An overview of Transylvania." Accounting History 22, no. 1 (2016): 92–123. http://dx.doi.org/10.1177/1032373216668183.

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Based on historiography and documentary research, this study juxtaposes the economic history of the Principality of Transylvania against the general evolution of accounting practice and thought, and makes comparisons with the general European context. Along with providing evidence for a less-researched area, the discussion on the sophistication of accounting through successive stages – from 1541 to 1918 – is useful for enabling other regional comparative studies. This study argues that there was a delay in the evolution of accounting in Transylvania compared to the development of European acco

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39

Chow, Cheuk Lun. "NUMERICAL STUDIES ON SMOKE SPREAD IN THE CAVITY OF A DOUBLE-SKIN FAÇADE / SKAITINIS DŪMŲ SKLIDIMO DVIGUBO FASADO ERTMĖJE TYRIMAS." Journal of Civil Engineering and Management 17, no. 3 (2011): 371–92. http://dx.doi.org/10.3846/13923730.2011.595075.

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Double-skin façade (DSF) is an environmental friendly architectural feature. However, fire hazard is a concern. A scenario of having a flashover room fire adjacent to the façade was identified. Heat and mass would be trapped in the façade cavity. This paper examines air flow driven out of a flashover room fire to the cavity of a DSF by Computational Fluid Dynamics. The software Fire Dynamics Simulator developed at the Building and Fire Research laboratory, National Institute of Standards and Technology, USA was selected as the simulation tool. Three DSF features labeled as DSF1, DSF2 and DSF3

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40

Godfrey, A., N. C. Krieger Lassen, D. A. Hughes, and D. Juul Jensen. "Investigation of Medium to High Strain Deformation Microstructures Using an Automated Electron Backscattering Pattern (EBSP) System." Microscopy and Microanalysis 4, S2 (1998): 280–81. http://dx.doi.org/10.1017/s1431927600021528.

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The speed of automated EBSP orientation gathering has now increased to a point where it is possible to examine large areas of deformed material at a resolution close to the length scale of the dislocation substructures involved (typically <1μm for strains of greater than ∊= l). Investigation of such deformed samples invariably gives rise to diffraction images of low quality and to many double patterns. To assist in a critical selection of the data, it is usual to store a measure of the indexing confidence for each point. Here we describe how deformed samples, which provide the appropriate r

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41

Schiller, Yitzhak. "Inter-Ictal- and Ictal-Like Epileptic Discharges in the Dendritic Tree of Neocortical Pyramidal Neurons." Journal of Neurophysiology 88, no. 6 (2002): 2954–62. http://dx.doi.org/10.1152/jn.00525.2001.

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Dendritic mechanisms have been implied to play a key role in the formation of epileptic discharges. However, presently only a handful of direct dendritic recordings have been reported during epileptic discharges. In this study, I performed simultaneous voltage recordings from the soma and apical dendrite of the same neuron combined with calcium-imaging measurements to investigate inter-ictal- and ictal-like epileptic discharges in dendrites of layer 5 pyramidal neurons. Neocortical brain slices treated with bicuculline (BCC) produced both isolated “inter-ictal” paroxysymal depolarization shift

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42

So, Min-Kyung, Sholhui Park, Kyunghoon Lee, Soo-Kyung Kim, Hae-Sun Chung, and Miae Lee. "Variant Prediction by Analyzing RdRp/S Gene Double or Low Amplification Pattern in Allplex SARS-CoV-2 Assay." Diagnostics 11, no. 10 (2021): 1854. http://dx.doi.org/10.3390/diagnostics11101854.

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The spread of delta variants (B.1.671.2) of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a severe global threat. Multiplex real-time PCR is a common method for confirming SARS-CoV-2 infection, however, additional tests, such as whole genomic sequencing, are required to reveal the presence or type of viral mutation. Moreover, applying whole genomic sequencing to all SARS-CoV-2 positive samples is challenging due to time and cost constraints. Here, we report that the double or low amplification curve observed during RNA-dependent RNA polymerase (RdRp) gene/S gene amplification

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Zhao, Wenhua, Xingliang Xu, Niandu Wu, Xiaodie Zhao, and Jiangfeng Gong. "Dandelion-Like CuCo2O4@ NiMn LDH Core/Shell Nanoflowers for Excellent Battery-Type Supercapacitor." Nanomaterials 13, no. 4 (2023): 730. http://dx.doi.org/10.3390/nano13040730.

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Dandelion-like CuCo2O4 nanoflowers (CCO NFs) with ultrathin NiMn layered double hydroxide (LDH) shells were fabricated via a two-step hydrothermal method. The prepared CuCo2O4@NiMn LDH core/shell nanoflowers (CCO@NM LDH NFs) possessed a high specific surface area (~181 m2·g−1) with an average pore size of ~256 nm. Herein, the CCO@NM LDH NFs exhibited the typical battery-type electrode material with a specific capacity of 2156.53 F·g−1 at a current density of 1 A·g−1. With the increase in current density, the rate capability retention was 68.3% at a current density of 10 A·g−1. In particular, t

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Duan, Yueyan. "How Can Social Media Play a Role in Combating Fake News." Lecture Notes in Education Psychology and Public Media 4, no. 1 (2023): 823–28. http://dx.doi.org/10.54254/2753-7048/4/2022438.

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The shift from a mass media culture to a social media culture has allowed people to access information in more diverse ways. The emergence of social media has provided people with a fast and efficient platform to exchange information and has gradually become the main channel for people to share information and get news. However, the double-edged sword effect of social media has gradually become apparent, with a large number of fake news stories mixed in. This paper will examine six different types of fake news through a literature review approach: satire, parody, fabrication, manipulation, adv

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Yue, Wei, Na Liu, Qiujie Zheng, and H. Holly Wang. "Does the COVID-19 Pandemic Change Consumers’ Food Consumption and Willingness-To-Pay? The Case of China." Foods 10, no. 9 (2021): 2156. http://dx.doi.org/10.3390/foods10092156.

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Since COVID-19 was first detected in China in 2019, governments around the world have imposed strict measures to curb the spread of the coronavirus, which substantially impacted people’s life. Consumers’ food consumption behavior has also changed accordingly with reduced grocery shopping frequency, replaced in-person grocery shopping with online shopping, and increased valuation on food. In this paper, we aim to investigate the change in Chinese consumers’ food consumption and their willingness to pay (WTP) for vegetables and meat, using a dataset with 1206 online samples collected between Feb

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Ayadi, Raouia, Inès Kammoun, and Mohamed Siala. "Efficient Offline Waveform Design Using Quincunx/Hexagonal Time-Frequency Lattices." Wireless Communications and Mobile Computing 2017 (2017): 1–16. http://dx.doi.org/10.1155/2017/9207108.

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Conventional orthogonal frequency division multiplexing (OFDM) may turn to be inappropriate for future wireless cellular systems services, because of extreme natural and artificial impairments they are expected to generate. Natural impairments result from higher Doppler and delay spreads, while artificial impairments result from multisource transmissions and synchronization relaxation for closed-loop signaling overhead reduction. These severe impairments induce a dramatic loss in orthogonality between subcarriers and OFDM symbols and lead to a strong increase in intercarrier interference (ICI)

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Jong, D. S., P. C. Pape, S. M. Baylor, and W. K. Chandler. "Calcium inactivation of calcium release in frog cut muscle fibers that contain millimolar EGTA or Fura-2." Journal of General Physiology 106, no. 2 (1995): 337–88. http://dx.doi.org/10.1085/jgp.106.2.337.

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Cut muscle fibers from Rana temporaria (sarcomere length, 3.4-4.2 microns) were mounted in a double Vaseline-gap chamber (14-15 degrees C) and equilibrated with end-pool solutions that contained 20 mM EGTA and 1.76 mM Ca. Sarcoplasmic reticulum (SR) Ca release was estimated from changes in pH (Pape, P. C., D.-S. Jong, and W.K. Chandler. 1995. Journal of General Physiology. 106:000-000). Although the amplitude and duration of the [Ca] transient, as well as its spatial spread from the release sites, are reduced by EGTA, SR Ca release elicited by either depolarizing voltage-clamp pulses or action

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Iroume, Junior Yves-Audrey, Raphaël Onguéné, Francis Djanna Koffi, et al. "The 21st August 2020 Flood in Douala (Cameroon): A Major Urban Flood Investigated with 2D HEC-RAS Modeling." Water 14, no. 11 (2022): 1768. http://dx.doi.org/10.3390/w14111768.

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A major flood event occurred on 21 August 2020 in the densely populated Makèpè Missokè neighborhood in the city of Douala (Cameroon, Africa). Nearly 2210 buildings and 12,376 victims spread over 82 hectares were affected. A 2D HEC-RAS model is applied to simulate and characterize this event. A cross analysis of flood depth and flow velocity is used to classify the flood risk and identify areas exposed from low to high hazard. The simulations provide detailed information on the flood characteristics (extent, depth, velocity, arrival time, and duration). The simulated maximum water surface profi

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Takase, Shintaro, Kouta Miyagawa, and Hisafumi Ikeda. "Label-Free Detection of Zeptomol miRNA via Peptide Nucleic Acid Hybridization Using Novel Cyclic Voltammetry Method." Sensors 20, no. 3 (2020): 836. http://dx.doi.org/10.3390/s20030836.

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To harness the applicability of microribonucleic acid (miRNA) as a cancer biomarker, the detection sensitivity of serum miRNA needs to be improved. This study evaluated the detection sensitivity of miRNA hybridization using cyclic voltammograms (CVs) and microelectrode array chips modified with peptide nucleic acid (PNA) probes and 6-hydroxy-1-hexanethiol. We investigated the PNA probe modification pattern on array chips using fluorescently labeled cDNA. The pattern was not uniformly spread over the working electrode (WE) and had a one-dimensional swirl-like pattern. Accordingly, we establishe

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Kang, Hyun, and Hyoung-Chul Oh. "Current concerns on journal article with preprint: Anesthesia and Pain Medicine perspectives." Anesthesia and Pain Medicine 18, no. 2 (2023): 97–103. http://dx.doi.org/10.17085/apm.23036.

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Preprints are preliminary research reports that have not yet been peer-reviewed. They have been widely adopted to promote the timely dissemination of research across many scientific fields. In August 1991, Paul Ginsparg launched an electronic bulletin board intended to serve a few hundred colleagues working in a subfield of theoretical high-energy physics, thus launching arXiv, the first and largest preprint platform. Additional preprint servers have since been implemented in different academic fields, such as BioRxiv (2013, Biology; www.biorxiv.org) and medRxiv (2019, Health Science; www.medr

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