Bibliografias temáticas / Channel characteristics

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Literatura científica selecionada sobre o tema "Channel characteristics"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 17 de fevereiro de 2022

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Artigos de revistas sobre o assunto "Channel characteristics"

Usherwood, P. N. "Characteristics of Five Types of K+ Channel in Cultured Locust Muscle". Journal of Experimental Biology 154, n.º 1 (1 de novembro de 1990): 45–65. http://dx.doi.org/10.1242/jeb.154.1.45.

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K+ channel activity in cultured locust myofibres was investigated using gigaohm patch-clamp techniques. After 2 months in vitro the myofibres had a mean resting potential of −39 ± 7 mV (±S.D., 7V = 42). Five types of K+ channel were identified at this time. The majority of single-channel events recorded from cellattached patches were due to a small-conductance (type 1) and a largeconductance (type 2), inward rectifier, K+ channel. In cell-attached patches, with 180 mmoll−1 KC1 in the patch pipette, the type 1 channel had a chord conductance of 43 pS for inward currents and 8pS for outward currents; the type 2 channel had a chord conductance of 115 pS for inward currents and 29 pS for outward currents. The type 2 channel exhibited bursting kinetics, was ATP-sensitive and could be blocked by Ba2+. Two other channels (types 3 and 4) had linear conductances of 130pS and 207pS, respectively. The type 3 channel was Ca2+-sensitive. A further channel (type 5) appeared to be an inward rectifier with a conductance of 5pS. Openings of types 3, 4 and 5 channels occurred less frequently than openings of the other two channels. Types 1, 2, 3 and 4 channels possessed multiple closed and open states with non-linear gating mechanisms.

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Wu, Weiming, Lu Wang, Xudong Ma, Ruihua Nie e Xingnian Liu. "Flow Characteristics and Bed Morphology in a Compound Channel between Two Single Channels". Water 12, n.º 12 (16 de dezembro de 2020): 3544. http://dx.doi.org/10.3390/w12123544.

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In mountainous areas, a river can widen from a single channel to a compound channel under the influence of geological conditions or human impacts, bringing about challenges in terms of flood control and channel regulation. This paper reports the results of tests conducted in a 26 m long flume with a uniform sediment bed (grain size = 0.5 mm), investigating the flow characteristics and bed morphology in a compound channel between two single channels. The stage‒discharge relationship in the compound channel and the longitudinal and cross-sectional bed profile in the compound channel between two single channels are presented and analyzed. The experimental results indicate that the flow characteristics and bed morphology in a compound channel between two single channels are significantly different from those in a normal compound channel. Based on the experimental data and observations, the mechanisms of flow and sediment transport in the compound channel between two single channels are illuminated.

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Khaouani, Mohammed, e Ahlam Guen-Bouazza. "Impact of multiple channels on the Characteristics of Rectangular GAA MOSFET". International Journal of Electrical and Computer Engineering (IJECE) 7, n.º 4 (1 de agosto de 2017): 1899. http://dx.doi.org/10.11591/ijece.v7i4.pp1899-1905.

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Square gate all around MOSFETs are a very promising device structures allowing to continue scaling due to their superior control over the short channel effects. In this work a numerical study of a square structure with single channel is compared to a structure with 4 channels in order to highlight the impact of channels number on the device’s DC parameters (drain current and threshold voltage). Our single channel rectangular GAA MOSFET showed reasonable ratio Ion/Ioff of 104, while our four channels GAA MOSFET showed a value of 103. In addition, a low value of drain induced barrier lowering (DIBL) of 60mV/V was obtained for our single channel GAA and a lower value of with 40mv/v has been obtained for our four channel one. Also, an extrinsic transconductance of 88ms/µm have been obtained for our four channels GAA compared to the single channel that is equal to 7ms/µm.

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Oh, Y., e D. J. Benos. "Single-channel characteristics of a purified bovine renal amiloride-sensitive Na+ channel in planar lipid bilayers". American Journal of Physiology-Cell Physiology 264, n.º 6 (1 de junho de 1993): C1489—C1499. http://dx.doi.org/10.1152/ajpcell.1993.264.6.c1489.

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We have purified an amiloride-inhibitable Na+ channel protein from bovine renal papillae using ion-exchange and immunoaffinity chromatography. In the present study, these purified Na+ channels were reconstituted into planar lipid bilayers, and their single-channel characteristics were studied. We observed both large- and small-conductance Na(+)-selective ion channels in planar lipid bilayers. Single-channel conductance for the large- and small-conductance channels saturated as a function of Na+ concentration. These relations could be fitted by a simple Langmuir isotherm with a Michaelis constant of 55 and 45 mM and a maximum open-state conductance of 56 or 8.4 pS, respectively. Both channels were perfectly cation selective, with a Na(+)-to-K+ permeability ratio of 6.7:1 for the large channel and 7.8:1 for the small channel, and their open single-channel current-voltage relations were linear when bathed with symmetrical Na+ solutions. The percent open time of the reconstituted large or small channels varied between 10 and 50% or 1 and 20%, respectively. After application of amiloride, both the large- and small-conductance Na+ channels were inhibited in a dose-dependent manner.

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SEMINARA, G., S. LANZONI, N. TAMBRONI e M. TOFFOLON. "How long are tidal channels?" Journal of Fluid Mechanics 643 (23 de novembro de 2009): 479–94. http://dx.doi.org/10.1017/s0022112009992308.

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Do tidal channels have a characteristic length? Given the sediment characteristics, the inlet conditions and the degree of channel convergence, can we predict it? And how is this length affected by the presence of tidal flats adjacent to the channel? We answer the above questions on the basis of a fully analytical treatment, appropriate for the short channels typically observed in coastal wetlands. The equilibrium length of non-convergent tidal channels is found to be proportional to the critical flow speed for channel erosion. Channel convergence causes concavity of the bed profile. Tidal flats shorten equilibrium channels significantly. Laboratory and field observations substantiate our findings.

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Garty, H., e D. J. Benos. "Characteristics and regulatory mechanisms of the amiloride-blockable Na+ channel". Physiological Reviews 68, n.º 2 (1 de abril de 1988): 309–73. http://dx.doi.org/10.1152/physrev.1988.68.2.309.

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Studies of active Na+ transport across intact amphibian skin and bladder epithelia and, more recently, epithelial cells in culture have served as prototypes for understanding transport function in other experimentally less accessible epithelia such as renal tubules, lung, and sweat glands. Epithelia of diverse phylogenetic origin contain amiloride-blockable Na+ channels that are undoubtedly involved in the regulation of transepithelial Na+ transport and electrolyte homeostasis. With the advent of the techniques of tissue culture, patch clamp, isotope flux measurements in native vesicles and liposomes, and planar lipid bilayer reconstitution, it has now become possible for the first time to explore the functional operation and regulation of this widespread and important transport protein at the molecular level. Epithelial transport physiology has now reached a point where investigators can embark on studies concerning the cellular and molecular biology of epithelial Na+ channels. In our opinion, concentrated experimental efforts should be directed in three general areas. First, detailed kinetic information concerning the molecular mechanisms of Na+ movement through this channel is required. For example, it is necessary to elucidate the nature (i.e., site and location) of channel block by amiloride and structurally related compounds, the structural determinants of its ion selectivity, the voltage dependence of amiloride and ion blockage, and the minimal number of polypeptide subunits required for channel activity. The second area of study concerns the nature of the regulation of this ion channel. What are the mechanisms of channel regulation and, specifically, how does cAMP and aldosterone activate or recruit these Na+ channels? Does regulation occur at the level of channel synthesis, through posttranslational modifications, or via noncovalent interactions with small molecules or peptides? Third, we feel that the isolation and purification of the Na+ channel is important because it will eventually enable investigators to establish the molecular details of ion movement through individual channels, i.e., structural correlates of ion selectivity, binding and blockade by amiloride, and ion flow. The isolation of the Na+ channel will allow the development of molecular probes of the channel protein. These probes will be useful for immunocytochemical localization studies and, ultimately, will lead to sequencing and site-directed mutagenesis studies. Also, questions concerning the homology between Na+ channels found in different tissues and organisms as well as between the different modes of amiloride-sensitive transporters can be addressed.

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Duncan, R. L., e K. A. Hruska. "Chronic, intermittent loading alters mechanosensitive channel characteristics in osteoblast-like cells". American Journal of Physiology-Renal Physiology 267, n.º 6 (1 de dezembro de 1994): F909—F916. http://dx.doi.org/10.1152/ajprenal.1994.267.6.f909.

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The effects of chronic, intermittent strain on the mechanosensitive cation (SA-cat) channels in UMR-106.01 osteoblast-like osteosarcoma cells were studied using patch-clamp techniques. Chronically strained cells demonstrated significantly larger increases in whole cell conductance when subjected to additional mechanical strain than nonstrained controls (69.0 +/- 15.1 vs. 14.1 +/- 3.1%; P < 0.001). This increase could be blocked by the SA-cat channel inhibitor, gadolinium, and corresponded to a three- to fivefold increase in SA-cat channel activity. Chronic strain increased the number of open channels in response to stretch and induced spontaneous SA-cat channel activity in 33% of the patches of strained cells. Graded increases in negative patch pressure demonstrated that SA-cat channels in chronically strained cells were activated at significantly lower levels of mechanical perturbation than nonstrained controls. These data suggest that chronic, cyclic strain reduces the activation threshold of the SA-cat channel and further strengthen our hypothesis that this channel may act as a mechanotransducer for the activation of bone remodeling by physical strain.

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Karsay, Kathrin, Jörg Matthes e Valerie Fröhlich. "Gender role portrayals in television advertisements: Do channel characteristics matter?" Communications 45, n.º 1 (26 de março de 2020): 28–52. http://dx.doi.org/10.1515/commun-2019-2055.

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AbstractIn the present study we investigated the role of channel characteristics with regard to gender role portrayals in television advertisements. Drawing on cultivation theory and social cognitive theory, we investigated six key variables in this line of research. We sampled a total of N = 1022 advertisements from four Austrian television channels: a public service channel, a commercial channel, and one commercial special interest channel for men and for women, respectively. Our results replicate well-known stereotypic gender role portrayals prevalent in television advertisements. The public service channel and the private channel did not differentiate from each other with regards to gender stereotyping. We found that a channel with a female target group aired advertisements containing the same or even amplified stereotypes compared to a male channel. The potential negative effects of stereotypic gender role portrayals in television advertisements are discussed.

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Han, J. C. "Heat Transfer and Friction Characteristics in Rectangular Channels With Rib Turbulators". Journal of Heat Transfer 110, n.º 2 (1 de maio de 1988): 321–28. http://dx.doi.org/10.1115/1.3250487.

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The effect of the channel aspect ratio on the distribution of the local heat transfer coefficient in rectangular channels with two opposite ribbed walls (to simulate turbine airfoil cooling passages) was determined for a Reynolds number range of 10,000 to 60,000. The channel width-to-height ratios (W/H, ribs on side W) were 1/4, 1/2, 1, 2, and 4. The test channels were heated by passing current through thin, stainless steel foils instrumented with thermocouples. The local heat transfer coefficients on the ribbed side wall and on the smooth side wall of each test channel from the channel entrance to the fully developed regions were measured for two rib spacings (P/e = 10 and 20). The rib angle-of-attack was kept at 90 deg. The local data in the fully developed region were averaged and correlated, based on the heat transfer and friction similarity laws developed for ribbed channels, to cover the ranges of channel aspect ratio, rib spacing, rib height, and Reynolds number. The results compare well with the published data for flow in a square channel with two opposite ribbed walls. The correlations can be used in the design of turbine airfoil cooling passages.

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Xu, Yi Dong. "Modeling and Simulation of the Propagation Characteristics by Underground Current Field". Applied Mechanics and Materials 385-386 (agosto de 2013): 1568–71. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.1568.

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It's one of the effective channels for short-distance wireless communications through stratum in underground mines on emergency communications. The geologic structure is complex in mines, in practical environments. It means there is a considerable difference in conductance property and channel characteristics. In order to realize effective communication through stratum, its necessary to explore and study underground signal transmission by establishing mathematical model of underground signal propagation characteristics based on the theory of constant current field and simulating the mathematical model with MATLAB. We established a simulation model of underground communication channel physics experiments and obtained the amplitude frequency characteristic of the channel, with which we can get the error comparison between theory and test.

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Teses / dissertações sobre o assunto "Channel characteristics"

Terrier, Benoit. "Flow characteristics in straight compound channels with vegetation along the main channel". Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6326.

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This study investigates the complex flow structure generated by riparian emergent vegetation along the edge of floodplain. Detailed velocity and boundary shear stress measurements were carried out for various arrangements of emergent rigid cylindric rods of 3 mm, 6 mm and 9 mm diameters and for three different rod densities. In addition, the impact of foliage on the flow field was assessed during a series of experiments where brushes were used instead of smooth rods. The results of these new experiments are first presented. In addition to the laboratory data, field data was obtained through Acoustic Doppler Current Profiler measurements for two flood events in a stretch of the river Rhône that can be approximated to a straight compound channel with vegetated banks. The analysis of the flow structure highlights the presence of strong secondary circulation and increased vorticity on the river banks. The rods on the edge of the floodplain increase significantly flow resistance, reducing velocity and decreasing boundary shear stress. Flow rate was seen to decrease with increasing vegetative density for all cases except when foliage was added. This suggests that an optimum threshold density, for which a smaller density would lead to an increased flow rate might exist. Wakes trailing downstream of the vegetation stem, planform coherent structures advected between the main channel and the floodplain, and eddying motion in the flow due to enhanced turbulence anisotropy are among the defining patterns observed in the studied compound channel flows with one line of emergent vegetation along the edge of the floodplain. The Shiono and Knight Method (SKM) was modified in order to account for the increased turbulence activity due to the rods. The drag force term was introduced in the same way as in the work of Rameshwaran and Shiono (2007). However, a new term was added to the transverse shear stress term in the form of an Elder formulation, incorporating a friction drag coefficient which can be derived from the experimental data. In this proposed version, the advection term was set to zero. Another version of the SKM, similar to Rameshwaran and Shiono (2007), was also tested with the addition of a local drag friction only applied in the rod region. The proposed SKM version without the advection term was favored as it can be more closely related to the experimental data and to physical processes. Finally, the capabilities of Telemac-2D were tested against the experimental data for various turbulence models. The Large Eddy Simulation turbulence model highlighted some unsteady flow patterns that were observed during experiments, while satisfactorily predicting the lateral velocity and boundary shear stress distributions.

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Gorman, Robert William Carleton University Dissertation Geography. "Sea ice characteristics of the Parry Channel". Ottawa, 1988.

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Taparugssanagorn, A. (Attaphongse). "Evaluation of MIMO radio channel characteristics from TDM-switched MIMO channel sounding". Doctoral thesis, University of Oulu, 2007. http://urn.fi/urn:isbn:9789514286506.

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Abstract The present dissertation deals with the evaluation of multiple-input multiple-output (MIMO) radio channel characteristics from time-division multiplexing (TDM)-switched MIMO channel sounding. The research can be divided into three main areas. First, the impacts of phase noise in TDM-switched MIMO channel sounding on channel capacity are studied. Second, we focus on those impacts on channel parameter estimation using the SAGE algorithm. And in the last part, spatial correlation, channel eigenvalue distribution, and ergodic capacity in realistic environments are analyzed. The rationale behind the first two areas is that most advanced MIMO radio channel sounders employ the TDM technique, which has significant problems from phase noise of the TX and RX phase locked loop (PLL) oscillators causing measurement errors in terms of estimated channel capacity and parameters. We propose statistical models that reproduce the capacity estimates. The effects of the sounding mode (SM), the length of pseudo-random noise (PN) sequence L of the sounding signal, and the system size are disclosed. The distinctive basis is to consider the impact of the actual phase noise in TDM switched MIMO channel sounding, instead of assuming white Gaussian-type phase noise. In a reality, the short-term phase noise component affecting one measurement cycle of a MIMO system plays an important role in the traditional estimators of the radio channel parameters and capacity. We show that the performance impairment is less than that been under the hypothesis of uncorrelated white Gaussian phase-noises samples. The difference is due to the non-vanishing correlation of phase-noise within the measurement cycle. Two approaches to mitigating the impact of phase noise are proposed. The former is the simple and efficient sliding averaging method, where the signal-to-noise ratio (SNR) of the channel impulse response can be increased. The latter is the choice of SM and L, which is more thorough. In the second part, two approaches to mitigating its impact on channel parameter estimation using the SAGE algorithm are also discussed. Besides the sliding averaging, which in general can increase the SNR, the new SAGE algorithm based channel parameter estimation based on the improved signal model accounting for the phase noise in the measurement device is proposed. Finally, the channel eigenvalue distribution and ergodic capacity based on complex hypergeometric functions and their asymptotic characteristics are analyzed. It is shown that the derived theoretical expressions closely approximate the simulated results of the measured finite-dimensional MIMO channels. The spatial correlation and the eigenvalue statistics in frequency selective channels for single and dual polarized antennas are investigated. This knowledge is useful when different MIMO and beamforming techniques are applied.

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Pottkotter, Andrew A. "Maximizing Channel Capacity based on Antenna and MIMO Channel Characteristics and its Application to Multimedia Data Transmission". University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1430317210.

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SUGIURA, Yoshie, Takaya YAMAZATO, Masaaki KATAYAMA e 正昭片山. "Measurement of Narrowband Channel Characteristics in Single-Phase Three-Wire Indoor Power-Line Channels". IEEE, 2008. http://hdl.handle.net/2237/11152.

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Green, Edward. "Propagation characteristics of a narrowband microcellular radio channel". Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.480724.

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Fahmi, Ahmed Ismat. "Molecular characteristics of the cardiac sodium channel subunits". Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621334.

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Ottosson, Anton, e Viktor Karlstrand. "Gaussian Process Methods for Estimating Radio Channel Characteristics". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289449.

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Gaussian processes (GPs) as a Bayesian regressionmethod have been around for some time. Since proven advant-ageous for sparse and noisy data, we explore the potential ofGaussian process regression (GPR) as a tool for estimating radiochannel characteristics.Specifically, we consider the estimation of a time-varyingcontinuous transfer function from discrete samples. We introducethe basic theory of GPR, and employ both GPR and its deep-learning counterpart deep Gaussian process regression (DGPR)for estimation. We find that both perform well, even with fewsamples. Additionally, we relate the channel coherence bandwidthto a GPR hyperparameter called length-scale. The results show atendency towards proportionality, suggesting that our approachoffers an alternative way to approximate the coherence band-width.
Gaussiska processer (Gaussian processes,GPs) har länge använts för Bayesiansk regression. Då de visat sigfördelaktiga för gles och brusig data utforskar vi möjligheternaför GP-regression (Gaussian process regression, GPR) som ettverktyg för att estimera egenskaper hos radiokanaler.Isynnerhetbetraktasskattningaventidsvarierandeöverföringsfunktion utifrån diskreta samplingar. Vi presenterarden grundläggande teorin kring GPR, och använder både GPRoch dess djupinlärningsmotsvarighet DGPR (deep Gaussian pro-cess regression) för skattning. Båda ger goda resultat, även när samplingarna är få. Utöver detta så relaterar vi koherens-bandbredden hos en radiokanal till en hyperparameter i GPR-modellen. Resultaten visar på en tendens till proportionalitet,vilket antyder att vår metod kan användas som ett alternativt sätt att approximera koherensbandbredden.
Kandidatexjobb i elektroteknik 2020, KTH, Stockholm

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Lundberg, Oscar. "Channel Characteristics Variations from Switching Between Narrow Beams". Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65628.

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The demand for higher throughput and lower latency in telecommunication systems is growing. Upcoming telecommunication systems will operate at higher frequencies (above 15 GHz) compared with previous systems (below 6 GHz). Antenna arrays will be employed in upcoming systems for increased link budget (coverage) and multiple input multiple output channels. This implies that narrow beams will be used. Beam tracking and beam steering is necessary to follow the user equipment. It is hypothesised that changing beam direction changes the channel condition for the communication link. In this work beam changes in data gathered with a 5G testbed is analysed at both 15 GHz and 28 GHz. The results show that the channel is indeed affected by beam changes. Statistical results of the conducted analysis are presented followed by specific examples on how the channel is affected by the beam changes. Knowledge on how the channel is affected by beam changes is of interest when designing systems for beam selection. The results show a nearly threefold increase of rank changes immediately after a beam change at 15 GHz. The probability for a rank change up or down is found to be equal. At 28 GHz the metric used for channel richness is singular value ratio. The statistical results show that the difference in singular value ratio before and after a beam change is increased by a factor 2. It is also shown that grating lobes may have a significant effect on the channel richness when changing beam direction.

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Yilmaz, Emre. "Algorithms for estimating reverberation characteristics for single channel dereverberation". Thesis, KTH, Signalbehandling, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168016.

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Speech enhancement systems achieving a joint suppression of reverberation and background noise can be used in digital hearing aids, voice controlled systems or hands-free telephony. Demanding requirements for computational complexity, signal delay and speech quality must be fulfilled in order to achieve a satisfactory performance. The speech quality depends on how accurate the reverberation characteristics such as the reverberation time or the spectral variance of the late reverberant speech are estimated. In this thesis, an efficient algorithm for a blind reverberation time estimation based on maximum likelihood approach is introduced. The new algorithm allows to estimate reverberation times from a much wider range with acceptable accuracy. Variance of the late reverberant speech is another important quantity in dereverberation systems. Two late reverberant spectral variance estimation methods are compared with regard to estimation accuracy and computational complexity. Finally, the performance of the considered speech enhancement system is analyzed with the improved reverberation time estimator.

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Livros sobre o assunto "Channel characteristics"

Mobile channel characteristics. Boston, MA: Kluwer Academic, 2000.

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Shirokov, Igor', e Yuriy Gimpilevich. Research of communication channel characteristics. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1093426.

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The questions of studying the amplitude and phase characteristics of communication channels of radio engineering systems are considered. As part of the research, a homodyne method for converting microwave signals is proposed, which makes it possible to measure amplitude and phase fluctuations with high accuracy and with the utmost simplicity of measuring equipment. The development of the homodyne method of signal transformation for the purposes and tasks of determining the amplitude and phase fluctuations of signals during the propagation of radio waves on open lines of sight is presented. The features of homodyne signal transformation in the presence of various destabilizing factors are considered. The issues of synchronization of reference generators on different parts of the measuring route are considered. The results of theoretical and experimental studies of amplitude and phase fluctuations on land and sea lines of sight are presented. For students and teachers, as well as anyone interested in radio engineering.

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Roth, Donald K. Estimation of flood peaks from channel characteristics in Ohio. Columbus, Ohio: U.S. Dept. of the Interior, Geological Survey, 1986.

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Violette, E. J. Millimeter-wave propagation characteristics and channel performance for urban-suburban environments. [Boulder, CO]: U.S. Dept. of Commerce, National Telecommunications and Information Administration, 1988.

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G, Elliott John. Channel-pattern adjustments and geomorphic characteristics of Elkhead Creek, Colorado, 1937-97. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

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G, Elliott John. Channel-pattern adjustments and geomorphic characteristics of Elkhead Creek, Colorado, 1937-97. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

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Capítulos de livros sobre o assunto "Channel characteristics"

Koča, Jaroslav, Radka Svobodová Vařeková, Lukáš Pravda, Karel Berka, Stanislav Geidl, David Sehnal e Michal Otyepka. "Channel Characteristics". In SpringerBriefs in Biochemistry and Molecular Biology, 81–90. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47388-8_8.

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Malik, Wasim Q., Junsheng Liu, Ben Allen e David J. Edwards. "Ultra-Wideband Spatial Channel Characteristics". In Ultra-Wideband, 361–83. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470056843.ch17.

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Cheng, Xiang, Rongqing Zhang e Liuqing Yang. "Vehicular Channel Characteristics and Modeling". In 5G-Enabled Vehicular Communications and Networking, 11–40. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02176-4_2.

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Ali, Elmustafa Sayed, Mona Bakri Hassan e Rashid A. Saeed. "Terahertz Communication Channel Characteristics and Measurements". In Next Generation Wireless Terahertz Communication Networks, 133–67. New York: CRC Press, 2021. http://dx.doi.org/10.1201/9781003001140-7.

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Zhang, Fan, Anhong Wang, Xiaoli Ma e Bing Zeng. "Adaptive Layered Video Transmission with Channel Characteristics". In Lecture Notes in Computer Science, 381–89. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24078-7_38.

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Zhiyuan, Liu, Yang Peng, Tang Shengwu e Liu Hui. "Research on Human Body Communication Channel Characteristics". In Lecture Notes in Electrical Engineering, 2143–49. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6571-2_261.

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Bhattacharyya, Suvanjan, Himadri Chattopadhyay, Anirban Roy, Aritra Rakshit e Indraneel Roy Chowdhury. "Thermohydraulic Transport Characteristics of Micro Mixer in Micro Channel". In Recent Advances in Chemical Engineering, 29–39. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1633-2_4.

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Peng, Liangguang, Jinzhao Lin, Tong Bai, Yu Pang, Guoquan Li, Huiquan Wang, Xiaoming Jiang, Junchao Wang e Zeljko Zilic. "An Encryption Method for BAN Using the Channel Characteristics". In Internet of Things, 221–33. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02819-0_17.

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Alam, Tamanna, Poh Seng Lee e Li-Wen Jin. "Characteristics of Two-Phase Flow Boiling in Microgap Channel". In Flow Boiling in Microgap Channels, 13–19. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7190-5_3.

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Kennedy, Charles, Suzanne E. Hickman e Samuel C. Silverstein. "Characteristics of Ligand-Gated Ion Channel P2 Nucleotide Receptors". In The P2 Nucleotide Receptors, 211–30. Totowa, NJ: Humana Press, 1998. http://dx.doi.org/10.1007/978-1-4612-1800-5_9.

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Trabalhos de conferências sobre o assunto "Channel characteristics"

Kolmonen, Veli-Matti, Jari Salo, Lasse Vuokko e Pertti Vainikainen. "Propagation channel cluster characteristics". In 2007 IEEE Antennas and Propagation Society International Symposium. IEEE, 2007. http://dx.doi.org/10.1109/aps.2007.4395760.

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Jain, Shalabh, Tuan Ta e John S. Baras. "Wormhole detection using channel characteristics". In ICC 2012 - 2012 IEEE International Conference on Communications. IEEE, 2012. http://dx.doi.org/10.1109/icc.2012.6364768.

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Pancera, E. "UWB antennas and channel characteristics". In 2010 IEEE International Conference on Wireless Information Technology and Systems (ICWITS). IEEE, 2010. http://dx.doi.org/10.1109/icwits.2010.5611870.

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Liu, Yusheng, Chunming Zhang, Sichao Tan, Lijing Wen e Shuai Ma. "Study of Pulsating Laminar Flow Field and Resistance Characteristics in Rectangular Channel". In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16131.

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Pulsating laminar flow field and resistance characteristics in rectangular channel are investigated analytically and experimentally. Mathematical model is established. The influences of flow fluctuation period on the flow field in rectangular channel are analyzed. The velocity gradient in the pulsating laminar flow is compared with that in the steady laminar. Analytical results are verified by experiment. The results show that flow pulsation causes phase difference between the velocity and pressure drop. Compared with steady flow filed, the flow field changes a lot under pulsating condition due to the oscillating velocity component. The velocity gradient in the pulsating laminar flow is changed periodically by the oscillating velocity component, which leads some change in friction coefficient.

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Miroshnyk, Marina, e Viktoriya Krylova. "Communication channel statistical characteristics research methods". In 2016 13th International Conference on Modern Problems of Radio Engineering, Telecommunications and Computer Science (TCSET). IEEE, 2016. http://dx.doi.org/10.1109/tcset.2016.7452116.

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Ma, Jianjun, R. Shrestha, Lothar Moeller e Daniel M. Mittleman. "Channel Characteristics for Terahertz Wireless Communications". In CLEO: Science and Innovations. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/cleo_si.2018.stu3d.2.

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Cocheril, Yann, Pierre Combeau, Marion Berbineau e Yannis Pousset. "MIMO propagation channel characteristics in tunnels". In 2007 7th International Conference on ITS Telecommunications. IEEE, 2007. http://dx.doi.org/10.1109/itst.2007.4295903.

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Ma, J., R. Shrestha, L. Moeller e D. M. Mittleman. "Channel Characteristics for Terahertz Wireless Communications". In 2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2018). IEEE, 2018. http://dx.doi.org/10.1109/irmmw-thz.2018.8509931.

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Singh, Dalwinder, Zhen Hu e Robert Qiu. "UWB channel sounding and channel characteristics in rectangular metal cavity". In Southeastcon 2008. IEEE, 2008. http://dx.doi.org/10.1109/secon.2008.4494313.

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Himmanen, Heidi. "Studies on channel models and channel characteristics for mobile broadcasting". In 2008 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB). IEEE, 2008. http://dx.doi.org/10.1109/isbmsb.2008.4536669.

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Relatórios de organizações sobre o assunto "Channel characteristics"

Neuffer, David. Comments on Ionization Cooling Channel Characteristics. Office of Scientific and Technical Information (OSTI), dezembro de 2013. http://dx.doi.org/10.2172/1128467.

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Krauss, T., e L. Meyer. Characteristics of turbulent velocity and temperature in a wall channel of a heated rod bundle. Office of Scientific and Technical Information (OSTI), setembro de 1995. http://dx.doi.org/10.2172/107015.

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Krantz, Richard J., e Walter L. Bloss. The Role of Acceptor Density on the High Channel Carrier Density I-V characteristics of AlGaAs/GaAs MODFETs. Fort Belvoir, VA: Defense Technical Information Center, outubro de 1990. http://dx.doi.org/10.21236/ada229953.

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Nozawa, Yu, Takashi Noda, Tomohisa Yamada, Yoshitaka Takeuchi e Kenta Akimoto. Development of Techniques for Improving Piston Cooling Performance (First Report)~Measurement of Heat Absorption Characteristics by Engine Oil in Cooling Channel. Warrendale, PA: SAE International, maio de 2005. http://dx.doi.org/10.4271/2005-08-0372.

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Braun, Alexander. The Interaction between a Thiol Specific Probe (OPA) and the Single Channel Characteristics of the Reconstituted Ca++ Release Protein from Skeletal Muscle Sarcoplasmic Reticulum. Portland State University Library, janeiro de 2000. http://dx.doi.org/10.15760/etd.6745.

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Ostoja, Steven, Tapan Pathak, Katherine Jarvis-Shean, Mark Battany e George Zhuang. Adapt - On-farm changes in the face of climate change: NRCS Area 3. USDA California Climate Hub, abril de 2018. http://dx.doi.org/10.32747/2018.7444387.ch.

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The agricultural economy is more vulnerable to projected changes in climate in some California counties than in others. This flyer highlights on-farm adaptation strategies to mitigate some of the effects of increased winter temperatures and more frequent summer heatwaves. Projected conditions will put the most strain on heat intolerant crops and crops with high chill requirements. When crops with these characteristics also have a high market value or are grown in large acreage, counties can be at risk for economic declines. Information on this flyer identifies the most vulnerable counties in California Area 3 for some key, climate-sensitive crops.

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Ostoja, Steven, Tapan Pathak, Katherine Jarvis-Shean e Mark Battany. Adapt - On-farm changes in the face of climate change: NRCS Area 1. USDA California Climate Hub, abril de 2018. http://dx.doi.org/10.32747/2018.7444389.ch.

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Ostoja, Steven, Tapan Pathak, Andre S. Biscaro e Mark Battany. Adapt - On-farm changes in the face of climate change: NRCS area 4. USDA California Climate Hub, abril de 2018. http://dx.doi.org/10.32747/2018.7435379.ch.

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Ostoja, Steven, Tapan Pathak, Katherine Jarvis-Shean, Mark Battany e Andre S. Biscaro. Adapt - On-farm changes in the face of climate change: NRCS Area 2. USDA California Climate Hub, abril de 2018. http://dx.doi.org/10.32747/2018.7444388.ch.

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Kuznetsov, Victor, Vladislav Litvinenko, Egor Bykov e Vadim Lukin. A program for determining the area of the object entering the IR sensor grid, as well as determining the dynamic characteristics. Science and Innovation Center Publishing House, abril de 2021. http://dx.doi.org/10.12731/bykov.0415.15042021.

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Currently, to evaluate the dynamic characteristics of objects, quite a large number of devices are used in the form of chronographs, which consist of various optical, thermal and laser sensors. Among the problems of these devices, the following can be distinguished: the lack of recording of the received data; the inaccessibility of taking into account the trajectory of the object flying in the sensor area, as well as taking into consideration the trajectory of the object during the approach to the device frame. The signal received from the infrared sensors is recorded in a separate document in txt format, in the form of a table. When you turn to the document, data is read from the current position of the input data stream in the specified list by an argument in accordance with the given condition. As a result of reading the data, it forms an array that includes N number of columns. The array is constructed in a such way that the first column includes time values, and columns 2...N- the value of voltage . The algorithm uses cycles that perform the function of deleting array rows where there is a fact of exceeding the threshold value in more than two columns, as well as rows where the threshold level was not exceeded. The modified array is converted into two new arrays, each of which includes data from different sensor frames. An array with the coordinates of the centers of the sensor operation zones was created to apply the Pythagorean theorem in three-dimensional space, which is necessary for calculating the exact distance between the zones. The time is determined by the difference in the response of the first and second sensor frames. Knowing the path and time, we are able to calculate the exact speed of the object. For visualization, the oscillograms of each sensor channel were displayed, and a chronograph model was created. The chronograph model highlights in purple the area where the threshold has been exceeded.

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