Log in

Relevant bibliographies by topics / Spectral shape / Journal articles

To see the other types of publications on this topic, follow the link: Spectral shape.

Journal articles on the topic 'Spectral shape'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Spectral shape.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Berg, Bruce G., and David M. Green. "Spectral shape discrimination of narrow‐band spectra." Journal of the Acoustical Society of America 89, no. 4B (1991): 1911. http://dx.doi.org/10.1121/1.2029476.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Erduran, Emrah, and Conrad Lindholm. "A Critical Look at the Use of Design Spectrum Shape for Seismic Risk Assessment." Earthquake Spectra 28, no. 4 (2012): 1711–21. http://dx.doi.org/10.1193/1.4000086.

Full text

Abstract:

The effects of using design spectrum shape over actual response spectra on earthquake damage estimates has been investigated. A series of numerical simulations were conducted to estimate the expected damage. The simulations were conducted with four different spectral shapes, two different ground-motion prediction equations (GMPEs) and three different soil classes. As a result of the numerical simulations, it was observed that the use of design spectrum shape leads to over- or underestimation of damage estimates relative to those obtained from the actual spectrum computed using GMPE. The damage

APA, Harvard, Vancouver, ISO, and other styles

3

Chudnovsky, A. A., E. Ben-Dor, and H. Saaroni. "Reflectance spectroscopy of indoor settled dust in Tel Aviv, Israel: comparison between the spring and the summer seasons." Advances in Geosciences 12 (July 4, 2007): 51–57. http://dx.doi.org/10.5194/adgeo-12-51-2007.

Full text

Abstract:

Abstract. The influence of mineral and anthropogenic dust components on the VIS-NIR-SWIR spectral reflectance of artificial laboratory dust mixtures was evaluated and used in combination with Partial Least Squares (PLS) regression to construct a model that correlates the dust content with its reflectance. Small amounts of dust (0.018–0.33 mg/cm2) were collected using glass traps placed in different indoor environments in Tel Aviv, Israel during the spring and summer of 2005. The constructed model was applied to reflectance spectroscopy measurements derived from the field dust samples to assess

APA, Harvard, Vancouver, ISO, and other styles

4

Taylor, Steven R., and Farid U. Dowla. "Spectral yield estimation of NTS explosions." Bulletin of the Seismological Society of America 81, no. 4 (1991): 1292–308. http://dx.doi.org/10.1785/bssa0810041292.

Full text

Abstract:

Abstract The yields of 299 NTS explosions have been estimated from Pn, Pg and Lg spectra (between 0.1 and 10 Hz) at four regional seismic stations. A spectral template matching technique is used where the spectra from an explosion of unknown yield are compared with the spectra of explosions of known yield. A matching function is defined that is a scaled inverse of the difference between the spectra from the known and unknown explosions. The yields from the seven closest matching explosions are then averaged to estimate the yield of the unknown event. The spectral matching technique appears to

APA, Harvard, Vancouver, ISO, and other styles

5

Sakata, A., S. Wada, and A. T. Tokunaga. "Chemical Composition of an Emanation from Comets: Identification of the 3 Micron Comet Feature." International Astronomical Union Colloquium 126 (1991): 241–44. http://dx.doi.org/10.1017/s0252921100066860.

Full text

Abstract:

AbstractRecent high resolution observations of comets revealed a detailed spectral shape of the 3.4μfeature. We measured IR spectra of simple 14 hydrocarbon molecules and made ”synthesized comet spectrum”. Peak wavelength and spectral shape of the synthesized spectrum are well in agreement with the observed comet features.

APA, Harvard, Vancouver, ISO, and other styles

6

Mendelevich, L. V., and Yu A. Koksharov. "Analytical Formula for the Relation between the Experimental and Theoretical Parameters of the Tsallis Spectral Line." Радиотехника и электроника 68, no. 5 (2023): 424–31. http://dx.doi.org/10.31857/s0033849423050145.

Full text

Abstract:

An exact analytical formula is obtained that relates the experimental and theoretical parameters of the spectral line described by the Tsallis function, which includes the Gaussian, Lorentzian, line shapes intermediate between them, and super-Lorentzian as special cases. The procedure for the numerical calculation of the theoretical parameters of the line shape is studied by the example of electron spin resonance spectra. The effect of complicating experimental factors, including the noise and the analog signal digitization discreteness, on the accuracy of determining the theoretical Tsallian

APA, Harvard, Vancouver, ISO, and other styles

7

Ardag, Dorukhan, and Donald T. Resio. "Inconsistent Spectral Evolution in Operational Wave Models due to Inaccurate Specification of Nonlinear Interactions." Journal of Physical Oceanography 49, no. 3 (2019): 705–22. http://dx.doi.org/10.1175/jpo-d-17-0162.1.

Full text

Abstract:

AbstractThe introduction of third-generation (3G) models was based on the premise that wave spectra could evolve without prior shape restrictions only if the representation for nonlinear interactions contained as many degrees of freedom as the discretized spectrum being modeled. It is shown here that a different criterion is needed to accurately represent nonlinear spectral evolution within models, a more rigorous criterion such that the number of degrees of freedom in the nonlinear source term must be equal to the intrinsic number of degrees of freedom in the theoretical form of this source t

APA, Harvard, Vancouver, ISO, and other styles

8

Ivanov, Valentin D., Lodovico Coccato, Mark J. Neeser, et al. "MUSE library of stellar spectra." Astronomy & Astrophysics 629 (September 2019): A100. http://dx.doi.org/10.1051/0004-6361/201936178.

Full text

Abstract:

Context. Empirical stellar spectral libraries have applications in both extragalactic and stellar studies, and they confer an advantage over theoretical libraries because they naturally include all relevant chemical species and physical processes. In recent years we have seen a stream of new sets of high-quality spectra, but increasing the spectral resolution and widening the wavelength coverage means resorting to multi-order echelle spectrographs. Assembling the spectra from many pieces results in lower fidelity of their shapes. Aims. We aim to offer the community a library of high-signal-to-

APA, Harvard, Vancouver, ISO, and other styles

9

Zhang, Yuling, and Yadong Wu. "Decomposition and Classification of Carbon Star Spectra." Academic Journal of Science and Technology 4, no. 3 (2023): 116–19. http://dx.doi.org/10.54097/ajst.v4i3.4909.

Full text

Abstract:

Automatic classification of stellar spectra is an important research component of astronomical data processing and is the basis for studying stellar evolution and parameter measurements. As a rare kind of stellar spectra, carbon star spectra put forward more efficient and accurate requirements for classification methods. The traditional manual classification methods have the disadvantages of slow speed and low accuracy, which can no longer meet the practical needs of automatic classification of massive stellar spectra, especially low signal-to-noise ratio stellar spectra, and machine learning

APA, Harvard, Vancouver, ISO, and other styles

10

Hillenbrand, James, and Robert A. Houde. "Vowel recognition: Formants, spectral peaks, and spectral shape." Journal of the Acoustical Society of America 98, no. 5 (1995): 2949. http://dx.doi.org/10.1121/1.414088.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Dai, Huanping, and Bruce G. Berg. "Spectral and temporal weights in spectral‐shape discrimination." Journal of the Acoustical Society of America 92, no. 3 (1992): 1346–55. http://dx.doi.org/10.1121/1.403928.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Rémond, Guy. "Spectral Deconvolution of Wavelength Dispersive X-RAY Spectra." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 2 (1990): 112–13. http://dx.doi.org/10.1017/s0424820100134156.

Full text

Abstract:

X-ray peaks frequently exhibit asymmetrical shape which may result either from the mechanisms of generation of X-ray photons or from instrumental spectral distortions. As a result a non-proportionality may occur between the observed and the true intensities of the analyzed emissions. An analytical description of the shape of an X-ray line must be used in a least-squares fitting procedure in order to derive the relative intensities from experimental spectra. The available models will be discussed taking into account the analyzed energy domain and the energy resolution of the spectrometer respec

APA, Harvard, Vancouver, ISO, and other styles

13

Hashemi, Robab, Hoimonti Rozario, Amr Ibrahim та Adriana Predoi-Cross. "Line shape study of the carbon dioxide laser band Ι". Canadian Journal of Physics 91, № 11 (2013): 924–36. http://dx.doi.org/10.1139/cjp-2013-0051.

Full text

Abstract:

The spectral line parameters of carbon dioxide have been measured in the laser band I (00011 ← 10001) centred at 10.4 μm. The spectra were recorded at room temperature using the spectroscopic instrumentation at the far-infrared beamline, Canadian Light Source, Saskatoon, Sask. The spectral line intensities, air- and self- broadened Lorentz half widths, and pressure-induced shift coefficients were retrieved for 48 spectral lines using a multispectrum fit technique (Benner et al. J. Quant. Spectrosc. Radiat. Transfer, 53, 705 (1995)). Line parameters were retrieved using the Voigt and speed-depe

APA, Harvard, Vancouver, ISO, and other styles

14

Shahid, Hifsa. "Free Carrier Distribution Criterion in Quantum Dot Lasers." July 2016 35, no. 3 (2016): 309–16. http://dx.doi.org/10.22581/muet1982.1603.01.

Full text

Abstract:

The spontaneous emission spectra of a 1.28μm InAs/GaAs QD (Quantum Dot) Fabry-Pérot laser device has been measured under continuous wave operation at a fixed junction temperature of 300K. At low carrier densities, empirically observed static peak wavelength position and a fixed spectral shape of the spontaneous emission spectra are indicative of the random-like population distribution rather than a global Fermi level in the system. A theoretical model based on the Monte-Carlo method has been shown to have good agreement with the empirical results. In addition the evolutions of spontaneous emis

APA, Harvard, Vancouver, ISO, and other styles

15

Cao, Dongliang, Paul Roetzer, and Florian Bernard. "Unsupervised Learning of Robust Spectral Shape Matching." ACM Transactions on Graphics 42, no. 4 (2023): 1–15. http://dx.doi.org/10.1145/3592107.

Full text

Abstract:

We propose a novel learning-based approach for robust 3D shape matching. Our method builds upon deep functional maps and can be trained in a fully unsupervised manner. Previous deep functional map methods mainly focus on predicting optimised functional maps alone, and then rely on off-the-shelf post-processing to obtain accurate point-wise maps during inference. However, this two-stage procedure for obtaining point-wise maps often yields sub-optimal performance. In contrast, building upon recent insights about the relation between functional maps and point-wise maps, we propose a novel unsuper

APA, Harvard, Vancouver, ISO, and other styles

16

Rost, Evelien, Christoph Hecker, Martin Schodlok, and Freek van der Meer. "Rock Sample Surface Preparation Influences Thermal Infrared Spectra." Minerals 8, no. 11 (2018): 475. http://dx.doi.org/10.3390/min8110475.

Full text

Abstract:

High-resolution laboratory-based thermal infrared spectroscopy is an up-and-coming tool in the field of geological remote sensing. Its spatial resolution allows for detailed analyses at centimeter to sub-millimeter scales. However, this increase in resolution creates challenges with sample characteristics, such as grain size, surface roughness, and porosity, which can influence the spectral signature. This research explores the effect of rock sample surface preparation on the thermal infrared spectral signatures. We applied three surface preparation methods (split, saw, and polish) to determin

APA, Harvard, Vancouver, ISO, and other styles

17

Chen, Sen, and Sheng-Nian Luo. "Small-angle scattering of polychromatic X-rays: effects of bandwidth, spectral shape and high harmonics." Journal of Synchrotron Radiation 25, no. 2 (2018): 496–504. http://dx.doi.org/10.1107/s1600577517018355.

Full text

Abstract:

Polychromatic X-ray sources can be useful for photon-starved small-angle X-ray scattering given their high spectral fluxes. Their bandwidths, however, are 10–100 times larger than those using monochromators. To explore the feasibility, ideal scattering curves of homogeneous spherical particles for polychromatic X-rays are calculated and analyzed using the Guinier approach, maximum entropy and regularization methods. Monodisperse and polydisperse systems are explored. The influence of bandwidth and asymmetric spectra shape are exploredviaGaussian and half-Gaussian spectra. Synchrotron undulator

APA, Harvard, Vancouver, ISO, and other styles

18

Ma, Cuiling, Qiang Gu, and Guohua Sun. "Mathematical Expression of Design Hysteretic Energy Spectra Based on Chinese Soil Type." Mathematical Problems in Engineering 2019 (April 2, 2019): 1–10. http://dx.doi.org/10.1155/2019/3483516.

Full text

Abstract:

This paper explores the energy-based seismic design based on source-to-site distance and the site classification found in Chinese national codes. Specifically, 750 ground motion records were selected according to Chinese site classification, and the equivalent velocity spectra of cumulative hysteretic energy (HE) demand were derived using the energy-balance equation with the single degree of freedom (SDOF) system. In addition, the effects of soil type, earthquake magnitude, site group, structural damping ratio, and ductility ratio were investigated on the HE spectra, and mathematical expressio

APA, Harvard, Vancouver, ISO, and other styles

19

May, A. D., W. K. Liu, F. R. W. McCourt, et al. "The impact theory of spectral line shapes: a paradigm shift." Canadian Journal of Physics 91, no. 11 (2013): 879–95. http://dx.doi.org/10.1139/cjp-2012-0345.

Full text

Abstract:

An overview of the binary collision impact theory of spectral line shapes has been given to provide a unified statistical mechanical approach to line-shape theory, laser theory, nonlinear optics, and transport phenomena in dilute gases. The computation of spectral line profiles corresponding to those obtained from ultra-high-resolution spectral line-shape measurements requires numerical ab initio calculation of scattering amplitudes directly from the underlying dynamics of collisions between radiatively active molecules and their perturbers. The Wigner distribution function–density matrix is u

APA, Harvard, Vancouver, ISO, and other styles

20

Bronstein, Michael M., and Alexander M. Bronstein. "Shape Recognition with Spectral Distances." IEEE Transactions on Pattern Analysis and Machine Intelligence 33, no. 5 (2011): 1065–71. http://dx.doi.org/10.1109/tpami.2010.210.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Litany, O., E. Rodolà, A. M. Bronstein, and M. M. Bronstein. "Fully Spectral Partial Shape Matching." Computer Graphics Forum 36, no. 2 (2017): 247–58. http://dx.doi.org/10.1111/cgf.13123.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Eom, Kie B. "Shape recognition using spectral features." Pattern Recognition Letters 19, no. 2 (1998): 189–95. http://dx.doi.org/10.1016/s0167-8655(97)00165-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Strumia, F. "Theories of spectral line shape." Il Nuovo Cimento D 5, no. 5 (1985): 471. http://dx.doi.org/10.1007/bf02450651.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Francis, Tom, Timothy Sullivan, Anne Hulsey, and Kenneth Elwood. "Recommendations for the shape of the design response spectrum in the New Zealand seismic loadings technical specification." Bulletin of the New Zealand Society for Earthquake Engineering 58, no. 2 (2025): 83–97. https://doi.org/10.5459/bnzsee.1692.

Full text

Abstract:

The recent release of the 2022 national seismic hazard model has highlighted significant changes in the quantified seismic hazard for much of New Zealand that has prompted the development of draft changes to the NZS 1170.5 seismic design provisions. One proposed change is to the shape of the design spectrum, which was previously provided by a spectral shape factor, Ch(T), that is a function of site class only. However, research has shown that spectral shape is strongly affected by several additional factors including earthquake magnitude and shaking intensity. Moreover, the use of fixed spectr

APA, Harvard, Vancouver, ISO, and other styles

25

Baba, Takashi, and Izumi Waki. "Spectral shape ofin situmass spectra of sympathetically cooled molecular ions." Journal of Applied Physics 92, no. 7 (2002): 4109–16. http://dx.doi.org/10.1063/1.1506005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Adachi, H. "Spectral shape of resonant x-ray magnetic diffraction from GdAl₂." Journal of Physics: Conference Series 2380, no. 1 (2022): 012131. http://dx.doi.org/10.1088/1742-6596/2380/1/012131.

Full text

Abstract:

Abstract We have numerically examined the spectral shape of the ratio of the intensity variation upon the magnetization reversal for the 444 reflection of the ferromagnetic intermetallic compound GdAl2 in the vicinity of the Gd L 2 edge and succeeded in roughly reproducing the experimental spectra for two different magnetization directions simultaneously. The main features of the spectral shape are described in terms of the conventional dispersion effects and the resonant magnetic scattering of electric dipole transitions.

APA, Harvard, Vancouver, ISO, and other styles

27

Hillenbrand, James M., and Robert A. Houde. "Speech perception based on spectral peaks versus spectral shape." Journal of the Acoustical Society of America 112, no. 5 (2002): 2249. http://dx.doi.org/10.1121/1.4778946.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Hillenbrand, James M., Robert A. Houde, and Robert T. Gayvert. "Speech perception based on spectral peaks versus spectral shape." Journal of the Acoustical Society of America 119, no. 6 (2006): 4041–54. http://dx.doi.org/10.1121/1.2188369.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Gomez, T. A., T. Nagayama, P. B. Cho, D. P. Kilcrease, C. J. Fontes, and M. C. Zammit. "Introduction to spectral line shape theory." Journal of Physics B: Atomic, Molecular and Optical Physics 55, no. 3 (2022): 034002. http://dx.doi.org/10.1088/1361-6455/ac4f31.

Full text

Abstract:

Abstract Spectral line-shape models are an important part of understanding high-energy-density (HED) plasmas. Models are needed for calculating opacity of materials and can serve as diagnostics for astrophysical and laboratory plasmas. However, much of the literature on line shapes is directed toward specialists. This perspective makes it difficult for non-specialists to enter the field. We have two broad goals with this topical review. First, we aim to give information so that others in HED physics may better understand the current field. This first goal may help guide future experiments to t

APA, Harvard, Vancouver, ISO, and other styles

30

Clarindo, Guilherme, Ricardo M. Campos, and Carlos Guedes Soares. "Uncertainty of Wave Spectral Shape and Parameters Associated with the Spectral Estimation." Journal of Marine Science and Engineering 12, no. 9 (2024): 1666. http://dx.doi.org/10.3390/jmse12091666.

Full text

Abstract:

The uncertainty in estimating the wave spectrum from the records of wave elevation by heave–pitch–roll buoys is studied, considering the effects of the estimation method and the spectral resolution adopted in the process. This investigation utilizes measurements from a wave buoy moored in deep water in the South Atlantic Ocean. First, the spectra are computed using the autocorrelation function and the direct Fourier method. Second, the spectral resolution is tested in terms of degrees of freedom. The degrees of freedom are varied, and the resulting spectra and integrated parameters are compute

APA, Harvard, Vancouver, ISO, and other styles

31

Kaliuzhnyi-Verbovetskyi, D., and V. Pivovarchik. "RECOVERING THE SHAPE OF A QUANTUM CATERPILLAR TREE BY TWO SPECTRA." Mechanics And Mathematical Methods 5, no. 1 (2023): 14–24. http://dx.doi.org/10.31650/2618-0650-2023-5-1-14-24.

Full text

Abstract:

existence of co-spectral (iso-spectral) graphs is a well-known problem of the classical graph theory. However, co-spectral graphs exist in the theory of quantum graphs also. In other words, the spectrum of the Sturm-Liouville problem on a metric graph does not determine alone the shape of the graph. Сo-spectral trees also exist if the number of vertices exceeds eight. We consider two Sturm-Liouville spectral problems on an equilateral metric caterpillar tree with real L2 (0,l) potentials on the edges. In the first (Neumann) problem we impose standard conditions at all vertices: Neumann boundar

APA, Harvard, Vancouver, ISO, and other styles

32

Goncharenko, A., V. Burgonskyi, and S. Mykolaichuk. "Problems of identifying periodontopathogenic bacterial flora and potential solutions to them by mathematical modeling of an effective dielectric response using the example of S. aureus (reference strain)." SUCHASNA STOMATOLOHIYA 104, no. 5 (2020): 30–35. http://dx.doi.org/10.33295/1992-576x-2020-5-30.

Full text

Abstract:

The aim of the study was to create a multiparametric mathematical model describing the dielectric response of Staphylococcus aureus suspensions for its further use to interpret dielectric spectra and identify the parameters of periodontopathogenic bacterial flora, that would optimize diagnostic processes in periodontology. Materials and methods. The study was based on the use of the Bergman-Milton analytical spectral representation for the effective dielectric response, generalized to the case of inclusions (bacteria), which can be modeled as core-shell- spheroids. The developed software using

APA, Harvard, Vancouver, ISO, and other styles

33

Lu, Jing, Eric Y. Hsiao, Mark M. Phillips, et al. "Carnegie Supernova Project. II. Near-infrared Spectral Diversity and Template of Type Ia Supernovae." Astrophysical Journal 948, no. 1 (2023): 27. http://dx.doi.org/10.3847/1538-4357/acc100.

Full text

Abstract:

Abstract We present the largest and most homogeneous collection of near-infrared (NIR) spectra of Type Ia supernovae (SNe Ia): 339 spectra of 98 individual SNe obtained as part of the Carnegie Supernova Project-II. These spectra, obtained with the FIRE spectrograph on the 6.5 m Magellan Baade telescope, have a spectral range of 0.8–2.5 μm. Using this sample, we explore the NIR spectral diversity of SNe Ia and construct a template of spectral time series as a function of the light-curve-shape parameter, color stretch s BV . Principal component analysis is applied to characterize the diversity o

APA, Harvard, Vancouver, ISO, and other styles

34

Glaz, W., and G. C. Tabisz. "Modelling the far wings of collision-induced translational spectral profiles." Canadian Journal of Physics 79, no. 5 (2001): 801–11. http://dx.doi.org/10.1139/p01-053.

Full text

Abstract:

By comparing three model spectral profiles to precise line shapes obtained from quantum calculations, we assess the suitability of the various models for describing the far wings of translational collision-induced spectra. A profile obtained based on a generalized Langevin approach can give a better fit to the quantum shape than the widely used BirnbaumCohen model; the fit given by the six-parameter extended BirnbaumCohen profile proves to be the best of all three functions. PACS No.: 32.70Jz

APA, Harvard, Vancouver, ISO, and other styles

35

Svyakhovskiy, S. E., and N. I. Pyshkov. "Creation of photonic crystal structures with arbitrary spectral features." Seriya 3: Fizika, Astronomiya, no. 4_2023 (September 20, 2023): 2340401–1. http://dx.doi.org/10.55959/msu0579-9392.78.2340401.

Full text

Abstract:

We present a method of creation of photonic structures whose optical spectrum of the reflection coefficient has an arbitrary shape and has predetermined features. We develop an algorithm for the construction of a photonic crystal structure, perform numerical simulation of its reflection spectra, and create an experimental sample of a photonic crystal that has a spectral response corresponding to a given shape.

APA, Harvard, Vancouver, ISO, and other styles

36

Binnenfeld, A., S. Shahaf, R. I. Anderson, and S. Zucker. "New periodograms separating orbital radial velocities and spectral shape variation." Astronomy & Astrophysics 659 (March 2022): A189. http://dx.doi.org/10.1051/0004-6361/202141406.

Full text

Abstract:

We present new periodograms that are effective in distinguishing Doppler shift from spectral shape variability in astronomical spectra. These periodograms, building upon the concept of partial distance correlation, separate the periodic radial velocity modulation induced by orbital motion from that induced by stellar activity. These tools can be used to explore large spectroscopic databases in search of targets in which spectral shape variations obscure the orbital motion; such systems include active planet-hosting stars or binary systems with an intrinsically variable component. We provide a

APA, Harvard, Vancouver, ISO, and other styles

37

Meuse, Curtis W. "Circular Dichroism Spectral Similarity Plots to Extend Validation and Correction to All Measured Wavelengths." Applied Spectroscopy 76, no. 3 (2022): 318–30. http://dx.doi.org/10.1177/00037028211057129.

Full text

Abstract:

Interlaboratory comparisons of circular dichroism (CD) spectra are useful for developing confidence in the measurements associated with optically active molecules. These measurements also help define the higher-order (secondary and tertiary) structure of biopolymers. Unfortunately, the extent of the validity of these measurements has been unclear. In this work, a method is described to extend CD validation over the entire observed wavelength range using what will be called spectral similarity plots. The method involves plotting, wavelength by wavelength, all measured spectral intensities of a

APA, Harvard, Vancouver, ISO, and other styles

38

Schweiger, Anna K., Jeannine Cavender-Bares, Shan Kothari, et al. "Coupling spectral and resource-use complementarity in experimental grassland and forest communities." Proceedings of the Royal Society B: Biological Sciences 288, no. 1958 (2021): 20211290. http://dx.doi.org/10.1098/rspb.2021.1290.

Full text

Abstract:

Reflectance spectra provide integrative measures of plant phenotypes by capturing chemical, morphological, anatomical and architectural trait information. Here, we investigate the linkages between plant spectral variation, and spectral and resource-use complementarity that contribute to ecosystem productivity. In both a forest and prairie grassland diversity experiment, we delineated n -dimensional hypervolumes using wavelength bands of reflectance spectra to test the association between the spectral space occupied by individual plants and their growth, as well as between the spectral space oc

APA, Harvard, Vancouver, ISO, and other styles

39

Siebert, M. R., R. J. Foley, D. O. Jones, et al. "Investigating the diversity of Type Ia supernova spectra with the open-source relational data base kaepora." Monthly Notices of the Royal Astronomical Society 486, no. 4 (2019): 5785–808. http://dx.doi.org/10.1093/mnras/stz1209.

Full text

Abstract:

Abstract We present a public, open-source relational data base (we name kaepora) containing a sample of 4975 spectra of 777 Type Ia supernovae (SNe Ia). Since we draw from many sources, we significantly improve the spectra by inspecting these data for quality, removing galactic emission lines and cosmic rays, generating variance spectra, and correcting for the reddening caused by both MW and host-galaxy dust. With our data base, we organize this homogenized data set by 56 unique categories of SN-specific and spectrum-specific metadata. With kaepora, we produce composite spectra of subpopulatio

APA, Harvard, Vancouver, ISO, and other styles

40

Bailey, R. C. "The altitude dependence of terrestrial gamma‐ray spectra: A simple model." GEOPHYSICS 51, no. 11 (1986): 2108–16. http://dx.doi.org/10.1190/1.1442063.

Full text

Abstract:

Accurate airborne multichannel gamma‐ray surveys require accurate knowledge of the spectral shapes of the natural radioelements and their variation with height. Simple physical considerations suggest a model with two spectral components for each radioelement, in which the first component decays into the second with increasing height. The two spectral components are approximately identified with gamma rays that have been scattered and those that have not been scattered since entering the atmosphere, although this interpretation is irrelevant to the applications of the model. The model’s analyti

APA, Harvard, Vancouver, ISO, and other styles

41

Ewans, K. C., E. M. Bitner-Gregersen, and C. Guedes Soares. "Estimation of Wind-Sea and Swell Components in a Bimodal Sea State." Journal of Offshore Mechanics and Arctic Engineering 128, no. 4 (2004): 265–70. http://dx.doi.org/10.1115/1.2166655.

Full text

Abstract:

Methods for separating the spectral components and describing bimodal wave spectra are evaluated with reference to wave spectra from directional wave measurements made at the Maui location off the west coast of New Zealand. Two methods involve partitioning bimodal wave spectra into wind-sea and swell components and then fitting a spectral function to each component, while the third assigns an average spectral shape based on the integrated spectral parameters. The partitioning methods involve separating the wave spectrum into two frequency bands: a low-frequency peak, the swell component, and a

APA, Harvard, Vancouver, ISO, and other styles

42

Melnykov, S., T. Bulavinets, P. Stakhira, and I. Yaremchuk. "Simulation of plasmon properties of copper monosulphide particles in the nir range." Information and communication technologies, electronic engineering 3, no. 2 (2023): 187–93. http://dx.doi.org/10.23939/ictee2023.02.187.

Full text

Abstract:

This paper is devoted to the theoretical study of the extinction spectra of copper monosulfide particles under conditions of localized surface plasmon resonance. The study was conducted for plasmonic copper monosulfide particles of spherical and ellipsoidal shapes of variable size in media with different values of the refractive index. The simulation results reveal that increasing the radius of CuS nanoparticles leads to a significant enhancement in the amplitude of the plasmon peak and a shift of the peak towards longer wavelengths. It was investigated how the positions of the extinction peak

APA, Harvard, Vancouver, ISO, and other styles

43

Chen, Fang, and Junmei Tang. "Using spectral-shape parameters to improve linear spectral mixture analysis." International Journal of Remote Sensing 30, no. 22 (2009): 6061–67. http://dx.doi.org/10.1080/01431160902950871.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Jancovic, Peter, and Mnevver Kker. "Estimation of Voicing-Character of Speech Spectra Based on Spectral Shape." IEEE Signal Processing Letters 14, no. 1 (2007): 66–69. http://dx.doi.org/10.1109/lsp.2006.881517.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Mohandesi, Mohammad Ali, Alireza Azarbakht, and Mohsen Ghafory‐Ashtiany. "The conditional mean spectra by disaggregating the eta spectral shape indicator." Structural Design of Tall and Special Buildings 28, no. 5 (2019): e1586. http://dx.doi.org/10.1002/tal.1586.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Bucur, Dorin, Giuseppe Buttazzo, and Ulisse Stefanelli. "Shape flows for spectral optimization problems." Interfaces and Free Boundaries 14, no. 4 (2012): 521–44. http://dx.doi.org/10.4171/ifb/290.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Sajjanhar, Atul, Guojun Lu, Dengsheng Zhang, Jingyu Hou, Wanlei Zhou, and Yi-Ping Phoebe Chen. "Spectral shape descriptor using spherical harmonics." Integrated Computer-Aided Engineering 17, no. 2 (2010): 167–73. http://dx.doi.org/10.3233/ica-2010-0335.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Choukroun, Yoni, Alon Shtern, Alex Bronstein, and Ron Kimmel. "Hamiltonian Operator for Spectral Shape Analysis." IEEE Transactions on Visualization and Computer Graphics 26, no. 2 (2020): 1320–31. http://dx.doi.org/10.1109/tvcg.2018.2867513.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Ghielmetti, F., G. Colò, E. Vigezzi, P. F. Bortignon, and R. A. Broglia. "Spectral line shape of exotic nuclei." Physical Review C 54, no. 5 (1996): R2143—R2145. http://dx.doi.org/10.1103/physrevc.54.r2143.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Tam, Christopher K. W. "The Spectral Shape of Combustion Noise." International Journal of Aeroacoustics 14, no. 3-4 (2015): 431–56. http://dx.doi.org/10.1260/1475-472x.14.3-4.431.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!