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Journal articles on the topic 'Spectral mobility'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Kravtsov, V. E., I. V. Lerner, B. L. Altshuler, and A. G. Aronov. "Universal spectral correlations at the mobility edge." Physical Review Letters 72, no. 6 (1994): 888–91. http://dx.doi.org/10.1103/physrevlett.72.888.

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2

Nakai, T., R. Ishima, H. Sakahara, K. Endo, J. Konishi, and K. Akasaka. "An in vitro1H-MRS Model of Oncogene Transfection." Acta Radiologica 38, no. 6 (1997): 1083–86. http://dx.doi.org/10.1080/02841859709172136.

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Purpose: Malignancy is an abnormality of cell division and differentiation based on abnormal expression of oncogenes. This note describes the in vitro1H-NMR spectral features of oncogene-transfected NIH3T3 fibroblast cells compared to non-transfected cells Material and Methods: 1H-NMR spectra of cultured NIH3T3 cells and c-erbB-2 or c-Ha-ras gene-transfected cells were obtained by 400 MHz high resolution NMR. the peaks were assigned by 2D HOHAHA spectra of the cell suspension and the spectral changes were evaluated in 1D and 1D differential spectra Results: the 1H spectra obtained from both tr

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3

SMIRNOV, D., V. V. RUDENKOV, B. M. ASHKINADZE, et al. "PHOTOLUMINESCENCE OF A HIGH MOBILITY 2DEG IN THE FRACTIONAL QUANTUM HALL EFFECT REGIME." International Journal of Modern Physics B 21, no. 08n09 (2007): 1455–59. http://dx.doi.org/10.1142/s0217979207043002.

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The magneto-PL spectra of modulation-doped, ultra-high mobility GaAs/AlGaAs single heterojunctions (HJs) were studied under a perpendicularly applied magnetic field up to 33 T and at temperatures of 0.3 and 1.2 K. The spectra show remarkable intensity redistribution between free (bulk) exciton and 2DEG-hole PL channels occurring at electron filling factors, ν = 2 and 1. At 0.3 K, significant 2DEG-hole PL spectral changes are observed near ν = 2/3 and 1/3. Several heterojunctions with 2DEG density in the range of n2D - (1 - 2.7) · 1011 cm -2 display similar features. These spectral peculiaritie

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Chumakova, Natalia A., Tatiana S. Yankova, and Alexander I. Kokorin. "Rotational Mobility of TEMPO Spin Probe in Polypropylene: EPR Spectra Simulation and Calculation via Approximated Formulas." Solids 5, no. 4 (2024): 499–509. http://dx.doi.org/10.3390/solids5040033.

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The rotational correlation times of a small compact spin probe (2,2,6,6-tetramethylpiperidin-1-yl)oxyl in isotactic polypropylene were obtained over a wide temperature range by EPR spectra simulation taking into account rotational anisotropy as well as distribution of the probe molecules by rotational mobility. The averaged values of the rotational correlation times were compared with the corresponding values calculated using well-known approximated formulas based on the intensities and widths of the spectral lines. It was shown that the calculated values can be used as effective parameters to

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5

Braun, D., and G. Montambaux. "Spectral correlations from the metal to the mobility edge." Physical Review B 52, no. 19 (1995): 13903–9. http://dx.doi.org/10.1103/physrevb.52.13903.

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6

Fisher, F. T., A. Eitan, R. Andrews, L. S. Schadler, and L. C. Brinson. "Spectral Response and Effective Viscoelastic Properties of Mwnt-Reinforced Polycarbonate." Advanced Composites Letters 13, no. 2 (2004): 096369350401300. http://dx.doi.org/10.1177/096369350401300201.

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The impact of embedded carbon nanotubes on the effective viscoelastic response of a nanotube-reinforced polycarbonate system is characterized by studying the temperature- and frequency-dependent behaviour of the material. Macroscale experimental results demonstrate that the effective relaxation spectra of the samples is consistent with non-bulk polymer regions of restricted molecular mobility. Such low mobility regions are attributed to localized nanoscale interactions between the nanotubes and individual polymer chains.

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Duley, W. W. "Carbon Nanoparticles and Carbonaceous Solids." Proceedings of the International Astronomical Union 10, H16 (2012): 711–12. http://dx.doi.org/10.1017/s1743921314013027.

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AbstractThis paper reports on the preparation of hydrogenated amorphous carbon nano-particles whose spectral characteristics include an absorption band at 217.5 nm with the profile and characteristics of the interstellar 217.5 nm feature. Vibrational spectra of these particles also contain the features commonly observed in IR absorption and emission from dust in the diffuse interstellar medium. These materials are produced under “slow“ deposition conditions by minimizing the flux of incident carbon atoms and by reducing surface mobility.

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8

Deng, Yasong, Liang Xu, Ling Jin, et al. "Research on a Data Preprocessing Method for a Vehicle-Mounted Solar Occultation Flux–Fourier Transform Infrared Spectrometer." Photonics 11, no. 6 (2024): 541. http://dx.doi.org/10.3390/photonics11060541.

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A vehicle-mounted solar occultation flux–Fourier transform infrared spectrometer uses the sun as an infrared light source to quantify molecular absorption in the atmosphere. It can be used for the rapid three-dimensional monitoring of pollutant emissions and the column concentration monitoring of greenhouse gases. The system has the advantages of high mobility and a capacity for noncontact measurement and measurement over long distances. However, in vehicle-mounted applications, vehicle bumps and obstacles introduce aberrations in the measured spectra, affecting the accuracy of gas concentrati

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9

Dakhel, A. A. "Germanium Doping to Improve Carrier Mobility in CdO Films." Advances in OptoElectronics 2013 (April 3, 2013): 1–6. http://dx.doi.org/10.1155/2013/804646.

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This investigation addresses the structural, optical, and electrical properties of germanium incorporated cadmium oxide (CdO : Ge) thin films. The focus was on the improvement in carrier mobility to achieve high transparency for near-infrared light and low resistivity at the same time. The properties were studied using X-ray diffraction, SEM, spectral photometry, and Hall measurements. All CdO : Ge films were polycrystalline with high texture orientation along [111] direction. It was observed that it is possible to control the carrier concentration () and mobility () with Ge-incorporation leve

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10

Zeng, Jing, Alexey Stovas, Handong Huang, Lixia Ren, and Tianlei Tang. "Prediction of Shale Gas Reservoirs Using Fluid Mobility Attribute Driven by Post-Stack Seismic Data: A Case Study from Southern China." Applied Sciences 11, no. 1 (2020): 219. http://dx.doi.org/10.3390/app11010219.

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Paleozoic marine shale gas resources in Southern China present broad prospects for exploration and development. However, previous research has mostly focused on the shale in the Sichuan Basin. The research target of this study is expanded to the Lower Silurian Longmaxi shale outside the Sichuan Basin. A prediction scheme of shale gas reservoirs through the frequency-dependent seismic attribute technology is developed to reduce drilling risks of shale gas related to complex geological structure and low exploration level. Extracting frequency-dependent seismic attribute is inseparable from spect

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Chihi, Houda, Ghazanfar Ali Safdar, and Mohammed Bahja. "Improved Spectral Efficiency and Connectivity in RSMA based 5G V2X Systems." EAI Endorsed Transactions on Energy Web 9, no. 6 (2022): e3. http://dx.doi.org/10.4108/ew.v9i6.3143.

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Vehicle to everything (V2X) faces several challenges including high data rate, low latency and stable connectivity requirements. Due to increased number of connected vehicles, Interference too appears to be a serious issue in V2X systems. Consequently, careful selection of multiple access techniques can lead to improved interference mitigation together with higher spectral efficiency and data rate. Vehicle mobility with growing traffic density is a demanding task that affects probability of vehicle connectivity, thereby resulting into requirement of sustained vehicle linkage for ongoing traffi

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12

Stavis, Samuel M., Joshua B. Edel, Yougen Li, Kevan T. Samiee, Dan Luo, and Harold G. Craighead. "Single-molecule mobility and spectral measurements in submicrometer fluidic channels." Journal of Applied Physics 98, no. 4 (2005): 044903. http://dx.doi.org/10.1063/1.2005371.

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Andrinopoulou, Eirini, and Panagiotis G. Tzouras. "Applying Spectral Clustering to Decode Mobility Patterns in Athens, Greece." Applied Sciences 15, no. 7 (2025): 3419. https://doi.org/10.3390/app15073419.

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The limited availability of mobility data makes it challenging to model demand, especially its spatiotemporal variations. Simultaneously, traditional transport modeling tools often rely on less disaggregated approaches, leading to gaps in understanding. To overcome these limitations, this study introduces the spectral clustering method to uncover major demand patterns considering various transport modes. It focuses on Athens, Greece, and utilizes a set of 1347 reported trips. The study reveals six distinct trip clusters. The first group, “an evening stroll nearby”, captures short distance tour

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Tsoraev, Georgy V., Elena A. Protasova, Elizaveta A. Klimanova, et al. "Anti-Stokes fluorescence excitation reveals conformational mobility of the C-phycocyanin chromophores." Structural Dynamics 9, no. 5 (2022): 054701. http://dx.doi.org/10.1063/4.0000164.

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The structural organization of natural pigment-protein complexes provides a specific environment for the chromophore groups. Yet, proteins are inherently dynamic and conformationally mobile. In this work, we demonstrate the heterogeneity of chromophores of C-phycocyanin (C-PC) from Arthrospira platensis. Part of the population of trimeric C-PC is subject to spontaneous disturbances of protein–protein interactions resulting in increased conformational mobility of the chromophores. Upon fluorescence excitation in the visible range, the spectral signatures of these poorly populated states are mas

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15

Watson, James R., Zach Gelbaum, Mathew Titus, Grant Zoch, and David Wrathall. "Identifying multiscale spatio-temporal patterns in human mobility using manifold learning." PeerJ Computer Science 6 (June 15, 2020): e276. http://dx.doi.org/10.7717/peerj-cs.276.

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When, where and how people move is a fundamental part of how human societies organize around every-day needs as well as how people adapt to risks, such as economic scarcity or instability, and natural disasters. Our ability to characterize and predict the diversity of human mobility patterns has been greatly expanded by the availability of Call Detail Records (CDR) from mobile phone cellular networks. The size and richness of these datasets is at the same time a blessing and a curse: while there is great opportunity to extract useful information from these datasets, it remains a challenge to d

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Therambath Rajanbabu, Delson, and Iven Jose. "Analysis and optimization of uplink spectral efficiency in massive multiple-input and multiple-output." Indonesian Journal of Electrical Engineering and Computer Science 28, no. 2 (2022): 830. http://dx.doi.org/10.11591/ijeecs.v28.i2.pp830-839.

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Fifth Generation (5G) specifications aims for data rate of 1 Gbps in high mobility and 10 Gbps in low mobility conditions, 15-30 bps/Hz of spectral efficiency with less than 1 milli second (ms) latency reduction. Massive multiple-input and multiple-output (Massive MIMO) is one of the promising technologies in 5G standard which offers a high spectral efficiency improvement. This work focus on the uplink scenario spectral efficiency in a Massive MIMO simulation network based on third generation partnership project (3GPP) and long term evolution (LTE) document of 5G. This work analyzes the spectr

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Rajanbabu, Delson Therambath, and Iven Jose. "Analysis and optimization of uplink spectral efficiency in massive multiple-input and multiple-output." Indonesian Journal of Electrical Engineering and Computer Science 28, no. 2 (2022): 830–39. https://doi.org/10.11591/ijeecs.v28.i2.pp830-839.

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Fifth Generation (5G) specifications aims for data rate of 1 Gbps in high mobility and 10 Gbps in low mobility conditions, 15-30 bps/Hz of spectral efficiency with less than 1 milli second (ms) latency reduction. Massive multiple-input and multiple-output (Massive MIMO) is one of the promising technologies in 5G standard which offers a high spectral efficiency improvement. This work focus on the uplink scenario spectral efficiency in a Massive MIMO simulation network based on third generation partnership project (3GPP) and long term evolution (LTE) document of 5G. This work analyzes the spectr

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18

Ducasse, Etienne, Karine Adeline, Xavier Briottet, Audrey Hohmann, Anne Bourguignon, and Gilles Grandjean. "Montmorillonite Estimation in Clay–Quartz–Calcite Samples from Laboratory SWIR Imaging Spectroscopy: A Comparative Study of Spectral Preprocessings and Unmixing Methods." Remote Sensing 12, no. 11 (2020): 1723. http://dx.doi.org/10.3390/rs12111723.

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Clay minerals play an important role in shrinking–swelling of soils and off–road vehicle mobility mainly due to the presence of smectites including montmorillonites. Since soils are composed of different minerals intimately mixed, an accurate estimation of its abundance is challenging. Imaging spectroscopy in the short wave infrared spectral region (SWIR) combined with unmixing methods is a good candidate to estimate clay mineral abundance. However, the performance of unmixing methods is mineral-dependent and may be enhanced by using appropriate spectral preprocessings. The objective of this p

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19

Pawase, Chaitali J., and KyungHi Chang. "5G-NR Physical Layer-Based Solutions to Support High Mobility in 6G Non-Terrestrial Networks." Drones 7, no. 3 (2023): 176. http://dx.doi.org/10.3390/drones7030176.

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Non-terrestrial network (NTN) systems can offer wide area coverage for applications requiring high mobility, which is expected in the sixth generation (6G) of telecommunication systems. This paper proposes a high-mobility support system based on the 5G-NR physical layer components for NTN connectivity. In this paper, we propose the optimization of 5G-NR numerologies and the impact of various modulation and coding schemes (MCS), 3GPP NR-NTN channel models, and MIMO/beamforming schemes with link-level simulation under pilot-aided-based perfect and DM-RS-based practical channel estimation at stat

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John, D., Z. Remeš, R. Novák, et al. "Influence of oxidative and consequential reductive annealing on the photoluminescence intensity, decay time and morphology of ZnO single-crystal faces." Journal of Physics: Conference Series 2931, no. 1 (2024): 012019. https://doi.org/10.1088/1742-6596/2931/1/012019.

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Abstract Zinc oxide exhibits high electron mobility, wide 3.3eV band gap, ability to sustain large electric fields, relatively low electronic noise, and strong luminescence. These properties make ZnO invaluable for a broad range of applications. To optimize them, it is important to study the influence of annealing on ZnO properties under various conditions. In this work we compare the infrared Raman (IR Raman, 1064 nm laser excitation, 70-3500 cm1 spectral range, 1cm1 spectral resolution) and photoluminescence (PL, 360 nm UV LED excitation, 375-700 nm spectral range, 1 ns time resolution) opti

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Geeta and A. M. Bhavikatti. "Mobility and Routing based Channel Estimation for Hybrid Millimeter-Wave MIMO WSNs." International journal of Computer Networks & Communications 14, no. 5 (2022): 1–16. http://dx.doi.org/10.5121/ijcnc.2022.14501.

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Recently, technological developments have enhanced, the use of Millimeter-wave (mm-Wave) Multiple Input Multiple Output (MIMO) system in various communication applications and wireless sensor networks as channel estimation efficiency can be immensely improved with the help of this technological developments in Millimeter-wave MIMO system and wireless sensor network as well. Moreover, they can improve quality of communication services to a great extent. However, cell interference in Millimeter-wave (mm-Wave) MIMO system can produce a massive impact on spectral efficiency. Therefore, a Routing E

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Kazarian, Sergei G., Noel H. Brantley, Barry L. West, Michael F. Vincent, and Charles A. Eckert. "In situ Spectroscopy of Polymers Subjected to Supercritical CO2: Plasticization and Dye Impregnation." Applied Spectroscopy 51, no. 4 (1997): 491–94. http://dx.doi.org/10.1366/0003702971940765.

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In situ FT-IR spectroscopy has been used to study poly(methyl methacrylate) films subjected to high-pressure and supercritical CO2. Spectral changes indicate increased molecular mobility of ester groups due to the plasticization effect of CO2 on PMMA. This increase in PMMA segmental mobility has been used to impregnate Disperse Red 1 dye (DR1) into polymer film from a supercritical fluid solution. The enhanced diffusion process was observed in situ via FT-IR and UV/vis spectroscopy.

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Ostrikova, Darya, Elizaveta Golos, Vitalii Beschastnyi, Egor Machnev, Yuliya Gaidamaka, and Konstantin Samouylov. "Dynamic SNR, Spectral Efficiency, and Rate Characterization in 5G/6G mmWave/sub-THz Systems with Macro- and Micro-Mobilities." Future Internet 16, no. 7 (2024): 240. http://dx.doi.org/10.3390/fi16070240.

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The performance of 5G/6G cellular systems operating in millimeter wave (mmWave, 30–100 GHz) and sub-terahertz (sub-THz, 100–300 GHz) bands is conventionally assessed by utilizing the static distributions of user locations. The rationale is that the use of the beam tracking procedure allows for keeping the beams of a base station (BS) and user equipment (UE) aligned at all times. However, by introducing 3GPP Reduced Capability (RedCap) UEs utilizing the Radio Resource Management (RRM) Relaxation procedure, this may no longer be the case, as UEs are allowed to skip synchronization signal blocks

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Rakhimova, A. Zh, I. V. Zhirkov, K. Kh Nussupov, N. B. Beisenkhanov, and A. T. Sultanov. "Effect of oxygen flow on electrical and optical properties of ITO films synthesized by magnetron sputtering method." Herald of the Kazakh-British technical university 20, no. 4 (2023): 109–17. http://dx.doi.org/10.55452/1998-6688-2023-20-4-109-117.

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The tin-doped indium oxide thin films were synthesized by DC magnetron sputtering on the surface of polished silicon samples and glass slides in a mixed argon-oxygen atmosphere. The other deposition parameters: operating pressure, magnetron power and substrate rotation speed were kept constant. Thickness and density of thin films were measured by X-ray Reflectometry. The effects of oxygen flow rate and substrate temperature on the optical and electrical properties were investigated. The electrical properties (resistivity, Hall mobility and charge concentration) of the thin films were measured

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Takaya, Kazunari, and Nobuyuki Shibata. "Application of Ion-Mobility Spectrometry to Chemical Analysis at High Concentrations." Atmosphere 13, no. 9 (2022): 1380. http://dx.doi.org/10.3390/atmos13091380.

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Ion-mobility spectrometry (IMS) can perform qualitative and quantitative analysis of multicomponent chemical mixtures in real time, which is difficult for commonly used instruments such as gas chromatography–mass spectrometry and photo-ionization detectors. IMS is commonly applied in microanalytical (ppb) sensing of toxic gases. Thus, its application to quantitative analyses of chemical substances with a high proton affinity is generally not possible at high concentrations (~1000 ppm) because multimeric complexes are generated. In a previous study, we found that calibration curves derived from

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FEDERICI, JOHN F., and HAIM GREBEL. "CHARACTERISTICS OF NANO-SCALE COMPOSITES AT THz AND IR SPECTRAL REGIONS." International Journal of High Speed Electronics and Systems 13, no. 04 (2003): 969–93. http://dx.doi.org/10.1142/s0129156403002113.

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Electronic characteristics are difficult to monitor in nanocomposites. Here we describe indirect assessments of these characteristics using THz, Raman and IR spectroscopy. Specifically we seek to gain understanding of the electron mobility in semiconductive and conductive nanostructures for electronic, electrooptic and nonlinear optical purposes.

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Chandrasekaran, R., R. J. Hemalatha, T. J. Kowshic, Josephin Arokiya Dhivya, and T. R. Thamizh vani. "Spectral analysis of electrogastrogram." International Journal of Engineering & Technology 7, no. 2.25 (2018): 130. http://dx.doi.org/10.14419/ijet.v7i2.25.16574.

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Gastroparesis is a condition that affects the normal motility of muscle in the stomach and is commonly called as paralysis of stomach. Electrogastrography is the technique for measuring electrical activity of the stomach. The Electrogastrography is also used to measure the gastric mobility and various stomach disorders like tachy-gastria, brady-gastria, dyspepsia, peptic ulcer, gastric tumor etc. Electrogastrogram is the graphical representation of the Electrogastrography. The Electrogastrography procedure is recommended by the physician to diagnose the dis orders in the stomach. Electrogastro

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Huang, Fobao, Xin Wang, Kun Xu, Yuanlong Liang, Yingquan Peng, and Guohan Liu. "Broadband organic phototransistor with high photoresponse from ultraviolet to near-infrared realized via synergistic effect of trilayer heterostructure." Journal of Materials Chemistry C 6, no. 32 (2018): 8804–11. http://dx.doi.org/10.1039/c8tc02148a.

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A broadband spectral response phototransistor was realized by introducing a trilayer all-organic heterostructure with the synergistic effect of a high mobility channel and strong mutual-complementary photoabsorption active layer, achieving a high photoresponse from the UV-Vis to the NIR region.

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Halket, John M., and Vladimir G. Zaikin. "Derivatization in Mass Spectrometry—1. Silylation." European Journal of Mass Spectrometry 9, no. 1 (2003): 1–21. http://dx.doi.org/10.1255/ejms.527.

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This is the first of a series of reviews on the application of derivatization in mass spectrometry. A description is given of advances in silylation as a powerful tool used for increasing the volatility, thermal and thermo-catalytic stability, and chromatographic mobility of polar and unstable organic compounds. In addition to chemical aspects of silylation, mass spectral properties of silyl derivatives useful for structure determination and quantitation of various organic and biologically-active compounds, mainly by GC/MS, are described. Practically all tested and widely used silylating agent

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Charkow, Joshua, and Hannes L. Röst. "Trapped Ion Mobility Spectrometry Reduces Spectral Complexity in Mass Spectrometry-Based Proteomics." Analytical Chemistry 93, no. 50 (2021): 16751–58. http://dx.doi.org/10.1021/acs.analchem.1c01399.

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Sun, Ning, and Jingxian Wu. "Maximizing Spectral Efficiency for High Mobility Systems with Imperfect Channel State Information." IEEE Transactions on Wireless Communications 13, no. 3 (2014): 1462–70. http://dx.doi.org/10.1109/twc.2014.012314.130772.

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Chai, Shimin, and Yongkui Zou. "The Spectral Method for the Cahn-Hilliard Equation with Concentration-Dependent Mobility." Journal of Applied Mathematics 2012 (2012): 1–35. http://dx.doi.org/10.1155/2012/808216.

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This paper is concerned with the numerical approximations of the Cahn-Hilliard-type equation with concentration-dependent mobility. Convergence analysis and error estimates are presented for the numerical solutions based on the spectral method for the space and the implicit Euler method for the time. Numerical experiments are carried out to illustrate the theoretical analysis.

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Weigand, F., D. E. Demco, B. Blümich, and H. W. Spiess. "Spectral parameters for quantitative mobility contrast in NMR imaging of solid polymers." Solid State Nuclear Magnetic Resonance 6, no. 4 (1996): 357–65. http://dx.doi.org/10.1016/0926-2040(95)01219-2.

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Fieni, David. "Tagging the spectral mobility of the stateless body: Deleuze, stasis, and graffiti." Journal for Cultural Research 20, no. 4 (2016): 350–65. http://dx.doi.org/10.1080/14797585.2016.1168972.

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Niehaus, Isak. "On the mobility of ghosts: spectral journeys in the South African lowveld." Africa 93, no. 1 (2023): 159–76. http://dx.doi.org/10.1017/s0001972023000141.

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AbstractIn studies of Southern Africa, ancestors and possessing spirits have received far greater attention than ghosts. It is only in recent years that fragmentary references to ghosts have begun to appear in the ethnographic record. In this article, I seek to redress this imbalance by documenting stories and accounts of encounters with ghosts in the South African lowveld. I turn to studies of ghosts in Asia and elsewhere as an analytical starting point for interpreting their social and cosmological significance. A widespread theory in this literature is that narratives of ghosts are a means

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Salimian, Ali, Abul Hasnath, Lorna Anguilano, et al. "Highly Conductive Zinc Oxide Based Transparent Conductive Oxide Films Prepared Using RF Plasma Sputtering Under Reducing Atmosphere." Coatings 10, no. 5 (2020): 472. http://dx.doi.org/10.3390/coatings10050472.

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The spectral properties and colour functions of a radio frequency (RF)-based sputtering plasma source was monitored during consecutive sputter deposition of zinc doped indium oxide (IZO) thin films under argon and argon/hydrogen mix. The effect of target exposure to the hydrogen gas on charge density/mobility and spectral transmittance of the deposited films was investigated. We demonstrate that consecutive exposure to the hydrogen gas during the deposition process progressively affects the properties of thin films with a certain degree of continuous improvement in electrical conductivity whil

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Demchyna, L. A. "OPTICAL SPECTROSCOPY OF HIGH –RESISTTNCE CdTe SINGLE CRYSTALS." Optoelektronìka ta napìvprovìdnikova tehnìka 59 (September 18, 2024): 118–23. https://doi.org/10.15407/iopt.2024.59.118.

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Recently, more and more attention has been paid to the technology of growing high-resistance CdTe crystals. The development of the technology is based on the control of the synthesis processes, the determination of the defective structure and its effect on the physical properties of the material. The conditions for obtaining the material determine the composition and distribution of point defects, which significantly affect the electronic processes in the material. Cadmium telluride is used to make uncooled gamma radiation detectors. CdTe doped with chlorine turned out to be especially promisi

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Muddassar, Hussain, Scalabrin Maria, Rossi Michele, and Michelusi Nicolò. "Mobility and Blockage-Aware Communications in Millimeter-Wave Vehicular Networks." IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 69, no. 11 (2020): 13072–86. https://doi.org/10.1109/TVT.2020.3020898.

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Mobility may degrade the performance of next-generation vehicular networks operating at the millimeter-wave spectrum: frequent misalignment and blockages require repeated beam-training and handover, with enormous overhead. Nevertheless, mobility induces temporal correlations in the communication beams and in blockage events. In this paper, an adaptive design is proposed, that learns and exploits these temporal correlations to reduce the beam-training overhead and make handover decisions. At each time-slot, the serving base station (BS) decides to perform either beam-training, data communicatio

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Challa, S. R., H. Witte, G. Schmidt, et al. "Defect characterization of heavy-ion irradiated AlInN/GaN on Si high-electron-mobility transistors." Journal of Physics D: Applied Physics 55, no. 11 (2021): 115107. http://dx.doi.org/10.1088/1361-6463/ac40b8.

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Abstract The characteristic energies of traps in InAlN/AlN/GaN high-electron mobility transistor structures on Si(111) substrates formed after irradiation with 75 MeV S-ions are studied by means of c-lattice parameter analysis, vertical IV-characteristics, micro-photoluminescence (µ-PL), photocurrent (PC) and thermally stimulated current (TSC) spectroscopy. From the lattice parameter analysis, point defect formation is concluded to be the dominant source of defects upon irradiation. A strong compensation effect manifests itself through enhanced resistivity of the devices as found in vertical I

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Diego, Giral, Hernandez Cesar, and Martinez Fredy. "Analysis and assessment software for multi-user collaborative cognitive radio networks." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 4 (2022): 4507–20. https://doi.org/10.11591/ijece.v12i4.pp4507-4520.

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Computer simulations are without a doubt a useful methodology that allows to explore research queries and develop prototypes at lower costs and timeframes than those required in hardware processes. The simulation tools used in cognitive radio networks (CRN) are undergoing an active process. Currently, there is no stable simulator that enables to characterize every element of the cognitive cycle and the available tools are a framework for discrete-event software. This work presents the spectral mobility simulator in CRN called “App MultiColl-DCRN”, developed with MATLAB’s app

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Robinson, Joshua A., Maxwell Wetherington, Joseph L. Tedesco, et al. "Correlating Raman Spectral Signatures with Carrier Mobility in Epitaxial Graphene: A Guide to Achieving High Mobility on the Wafer Scale." Nano Letters 9, no. 8 (2009): 2873–76. http://dx.doi.org/10.1021/nl901073g.

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Allinson, Graeme. "Application of hand-held mobility spectrometers as sensors in manufacturing industries." Journal of Automatic Chemistry 20, no. 1 (1998): 1–7. http://dx.doi.org/10.1155/s1463924698000017.

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Ion mobility spectrometers (IMS) are small, lightweight, extremely robust devices with low power requirements, no moving parts, no absolute requirement for gases or vacuums, that can be operated at ambient temperatures and pressures, and yet are capable of measuring vapour phase concentrations of organic chemicals at very low levels (sub-μg/l). IMS are capable of analysing complex mixtures and producing a simple spectral output. Volatile components produce measurable negative and positive product ions in the spectrometer through chemical ionization. The spectra produced are essentially the vap

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Li, Hua, Jiakai Pan, Hongda Zeng, Zhencheng Chen, Xiaoxia Du, and Wenxiang Xiao. "Identification of Specific Substances in the FAIMS Spectra of Complex Mixtures Using Deep Learning." Sensors 21, no. 18 (2021): 6160. http://dx.doi.org/10.3390/s21186160.

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High-field asymmetric ion mobility spectrometry (FAIMS) spectra of single chemicals are easy to interpret but identifying specific chemicals within complex mixtures is difficult. This paper demonstrates that the FAIMS system can detect specific chemicals in complex mixtures. A homemade FAIMS system is used to analyze pure ethanol, ethyl acetate, acetone, 4-methyl-2-pentanone, butanone, and their mixtures in order to create datasets. An EfficientNetV2 discriminant model was constructed, and a blind test set was used to verify whether the deep-learning model is capable of the required task. The

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Szuminska, Katarzyna, Aleksander Gutsze, and Andrzej Kowalczyk. "Relaxation of Water Protons in Highly Concentrated Aqueous Protein Systems Studied by NMR Spectroscopy." Zeitschrift für Naturforschung C 56, no. 11-12 (2001): 1075–81. http://dx.doi.org/10.1515/znc-2001-11-1226.

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Abstract In this paper we present proton spin-lattice ( T1) and spin-spin ( T2) relaxation times measured vs. concentration, temperature, pulse interval (τCPMG) as well as 1H NMR spectral measurements in a wide range of concentrations of bovine serum albumin (B SA ) solutions. The anomalous relaxation behaviour of the water protons, similar to that observed in mammalian lenses, was found in the two most concentrated solutions (44% and 46% ). The functional dependence of the spin-spin relaxation time vs. τCPMG pulse interval and the values of the motional activation parameters obtained from the

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Hong, He, and Wang Ning. "The Research Of Group Mobility Model Based On Spectral Clustering Algorithm In Opportunistic." International Journal of Advanced Networking and Applications 11, no. 05 (2020): 4378–85. http://dx.doi.org/10.35444/ijana.2020.11051.

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Avsievich, T. I., S. V. Frolov, and S. G. Proskurin. "Spectral characteristics of sign-alternating self-oscillatory endoplasm mobility in a myxomycete plasmodium." Optics and Spectroscopy 120, no. 1 (2016): 70–75. http://dx.doi.org/10.1134/s0030400x16010033.

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Zhang, Xiuyan, Qiming Sun, and Yan Gao. "Spectral efficiency of adaptive OFDM systems over high mobility Nakagami-m fading channels." Systems Science & Control Engineering 8, no. 1 (2020): 628–38. http://dx.doi.org/10.1080/21642583.2020.1854132.

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Sheng, Xi, Ying Zhang, and Xiaozhou Liu. "Influence of Vertical Fastener Stiffness on Rail Sound Power Characteristics: Numerical Study and Field Measurement." Applied Sciences 10, no. 5 (2020): 1682. http://dx.doi.org/10.3390/app10051682.

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The aim of this paper is to investigate the influence of vertical fastener stiffness on the sound power characteristics of rail rolling noise. The rail mobility is obtained by using the Timoshenko-beam track model and the spectral element method. The decay rate is obtained by using the periodic track model and the spectral transfer matrix method. Then, the simulation results of the rail mobility and the decay rate are used to calculate the sound power level of the rail subjected to a harmonic point excitation. Furthermore, the influence of vertical fastener stiffness on the rail sound power le

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Mehdi Haghshenas, Francesco Linsalata, Luca Barbieri, Mattia Brambilla, Monica Nicoli, and Maurizio Magarini. "Analysis of spatial scheduling in downlink vehicular communications: Sub-6 GHz vs mmWave." ITU Journal on Future and Evolving Technologies 3, no. 2 (2022): 523–34. http://dx.doi.org/10.52953/gewx7355.

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Vehicular communications are gaining a lot of attention for the delivery of enhanced mobility services that require multi-Gbps and low latency connections. In this paper, we focus on Infrastructure-to-Vehicle (I2V) communications where a gNB has to assign spatial resources to a number of connected vehicle users. To efficiently manage the scheduling, we compare the Zero Forcing (ZF) and Maximum Ratio (MR) precoding strategies by evaluating the effect of shifting from sub-6 GHz to millimeter wave (mmWave) frequencies in urban and highway mobility scenarios. We analyze the impact of the geometry

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Kuhn, Jonas, Nicole Bobrowski, Thomas Wagner, and Ulrich Platt. "Mobile and high-spectral-resolution Fabry–Pérot interferometer spectrographs for atmospheric remote sensing." Atmospheric Measurement Techniques 14, no. 12 (2021): 7873–92. http://dx.doi.org/10.5194/amt-14-7873-2021.

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Abstract. Grating spectrographs (GS) are presently widely in use for atmospheric trace gas remote sensing in the ultraviolet (UV) and visible spectral range (e.g. differential optical absorption spectroscopy, DOAS). For typical DOAS applications, GSs have a spectral resolution of about 0.5 nm, corresponding to a resolving power R (ratio of operating wavelength to spectral resolution) of approximately 1000. This is sufficient to quantify the vibro-electronic spectral structure of the absorption of many trace gases with good accuracy and further allows for mobile (i.e. compact and stable) instru

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