Bibliographies thématiques / Single-assumption / Articles de revues

Articles de revues sur le sujet « Single-assumption »

Pour voir les autres types de publications sur ce sujet consultez le lien suivant : Single-assumption.
Auteur : Grafiati
Publié le 10 mars 2023

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les 50 meilleurs articles de revues pour votre recherche sur le sujet « Single-assumption ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Parcourez les articles de revues sur diverses disciplines et organisez correctement votre bibliographie.

1

Blankenberger, Sven, et Dirk Vorberg. « The single-format assumption in arithmetic fact retrieval. » Journal of Experimental Psychology : Learning, Memory, and Cognition 23, no 3 (1997) : 721–38. http://dx.doi.org/10.1037/0278-7393.23.3.721.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Akopyan, Arseniy, et Alexander Plakhov. « Minimal Resistance of Curves under the Single Impact Assumption ». SIAM Journal on Mathematical Analysis 47, no 4 (janvier 2015) : 2754–69. http://dx.doi.org/10.1137/140993843.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

Worch, Thierry, et John M. Ennis. « Investigating the single ideal assumption using Ideal Profile Method ». Food Quality and Preference 29, no 1 (juillet 2013) : 40–47. http://dx.doi.org/10.1016/j.foodqual.2013.01.005.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
4

Plakhov, Alexander. « Newton’s problem of minimal resistance under the single-impact assumption ». Nonlinearity 29, no 2 (25 janvier 2016) : 465–88. http://dx.doi.org/10.1088/0951-7715/29/2/465.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

Vanhecke, Dimitri, Laura Rodríguez-Lorenzo, Calum Kinnear, Estelle Durantie, Barbara Rothen-Rutishauser et Alke Petri-Fink. « Assumption-free morphological quantification of single anisotropic nanoparticles and aggregates ». Nanoscale 9, no 15 (2017) : 4918–27. http://dx.doi.org/10.1039/c6nr07884b.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Harn, L., W. J. Hsin et M. Mehta. « Authenticated Diffie–Hellman key agreement protocol using a single cryptographic assumption ». IEE Proceedings - Communications 152, no 4 (2005) : 404. http://dx.doi.org/10.1049/ip-com:20041041.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
7

Comte, M., et T. Lachand-Robert. « Functions and Domains Having Minimal Resistance Under a Single-Impact Assumption ». SIAM Journal on Mathematical Analysis 34, no 1 (janvier 2002) : 101–20. http://dx.doi.org/10.1137/s0036141001388841.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Lu, Weijun, Guanyi Ma, Xiaolan Wang, Qingtao Wan et Jinghua Li. « Evaluation of ionospheric height assumption for single station GPS-TEC derivation ». Advances in Space Research 60, no 2 (juillet 2017) : 286–94. http://dx.doi.org/10.1016/j.asr.2017.01.019.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
9

Lambropoulos, John C. « The isotropic assumption during the Czochralski growth of single semiconductors crystals ». Journal of Crystal Growth 84, no 3 (septembre 1987) : 349–58. http://dx.doi.org/10.1016/0022-0248(87)90262-4.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Wallace, Chris. « Eliciting priors and relaxing the single causal variant assumption in colocalisation analyses ». PLOS Genetics 16, no 4 (20 avril 2020) : e1008720. http://dx.doi.org/10.1371/journal.pgen.1008720.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
11

Turner, Joseph A., et Nathanial Matz. « Beyond the single-scattering assumption for analysis of diffuse ultrasonic scattering experiments ». Journal of the Acoustical Society of America 142, no 4 (octobre 2017) : 2535. http://dx.doi.org/10.1121/1.5014263.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
12

Kim, J. I., et E. A. Gomaa. « Preferential Solvation of Single Ions : The PH4ASPH4B Assumption for Single Ion Thermodynamics in Mixed Dimethylsulfoxide-Water Solvents ». Bulletin des Sociétés Chimiques Belges 90, no 4 (1 septembre 2010) : 391–407. http://dx.doi.org/10.1002/bscb.19810900415.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
13

Müller, Luise K., et Johannes Haaf. « Universal concern, contingency and the single practice assumption : Sangiovanni’s theory of human rights ». European Journal of Political Theory 19, no 3 (24 janvier 2020) : 426–32. http://dx.doi.org/10.1177/1474885119890061.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
14

Das, Kaushik. « Single ion activities in aqueous sulfuric acid solutions : A new extra-thermodynamic assumption ». Journal of Solution Chemistry 17, no 4 (avril 1988) : 327–36. http://dx.doi.org/10.1007/bf00650413.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
15

Comte, M., et T. Lachand-Robert. « Newton's problem of the body of minimal resistance under a single-impact assumption ». Calculus of Variations and Partial Differential Equations 12, no 2 (mars 2001) : 173–211. http://dx.doi.org/10.1007/pl00009911.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
16

Liu, Lu, Yang Tao Xu, Na Yin et Ji Bo Wang. « Single Machine Group Scheduling Problem with Deteriorating Jobs and Release Dates ». Applied Mechanics and Materials 513-517 (février 2014) : 2145–48. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.2145.

Texte intégral
Résumé :
The paper deals with a single machine scheduling problem with deteriorating jobs and group technology (GT) assumption. By deteriorating jobs and group technology assumption, we mean that the group setup times and job processing times are both simple linear functions of their starting times. We show that the makespan minimization problem with release dates can be solved in polynomial time.
Styles APA, Harvard, Vancouver, ISO, etc.
17

Kim, Jeongbae, Han Choon Lee, Byung Do Oh et Moo Hwan Kim. « EFFECTS OF BUBBLE SHAPE ASSUMPTION ON SINGLE BUBBLE GROWTH BEHAVIOR IN NUCLEATE POOL BOILING ». Journal of Flow Visualization and Image Processing 11, no 1 (2004) : 73–87. http://dx.doi.org/10.1615/jflowvisimageproc.v11.i1.50.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
18

Gomaa, Esam A. « Study of the Ph4SbBPh4 assumption for single ion free energies in some organic solvents ». Thermochimica Acta 140 (mars 1989) : 7–11. http://dx.doi.org/10.1016/0040-6031(89)87278-8.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
19

Simmonds, J. G. « A Classical, Nonlinear Thermodynamic Theory of Elastic Shells Based on a Single Constitutive Assumption ». Journal of Elasticity 105, no 1-2 (10 décembre 2010) : 305–12. http://dx.doi.org/10.1007/s10659-010-9293-2.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
20

Jo, Sung Min, Jae Won Kim et Oh Joon Kwon. « A narrow-band k-distribution model with single mixture gas assumption for radiative flows ». Infrared Physics & ; Technology 91 (juin 2018) : 27–36. http://dx.doi.org/10.1016/j.infrared.2018.03.025.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
21

Blum, Bernardo S., Sebastian Claro et Ignatius J. Horstmann. « A Balls-and-Bins Model of Trade : Comment ». American Economic Review 106, no 3 (1 mars 2016) : 843–51. http://dx.doi.org/10.1257/aer.20140372.

Texte intégral
Résumé :
We show that the Armenter and Koren model's firm-product-country results rely on the assumption that export shipment size is independent of firm size, and this assumption is contradicted by the data. When actual shipment sizes are used in the balls-and-bins model, it cannot reproduce the data on single product/single country exporters. Beyond just showing that the shipment size assumption matters to balls-and-bins outcomes, our results highlight the important fact that shipment size is an economic decision, co-determined with other export choices. For this reason, we argue that a balls-and-bins model cannot be a purely statistical benchmark model. (JEL F11, F14, O13, O19, Q37)
Styles APA, Harvard, Vancouver, ISO, etc.
22

Odden, David. « Vowel geometry ». Phonology 8, no 2 (août 1991) : 261–89. http://dx.doi.org/10.1017/s0952675700001408.

Texte intégral
Résumé :
A basic assumption in current phonology is that features are not an unstructured set like (1a), but are arranged hierarchically into a constituent structure tree such as (1b), proposed in Sagey (1986: 61):Other groupings of features have been proposed (Clements 1985; Steriade 1987; inter alii).A fundamental assumption of theories like (1b) is that rules operate on constituents, an assumption which is formalised by limiting rules to spreading or delinking a single node.
Styles APA, Harvard, Vancouver, ISO, etc.
23

Swiderska-Mocek, A., E. Rudnicka et A. Lewandowski. « Temperature coefficients of Li-ion battery single electrode potentials and related entropy changes – revisited ». Physical Chemistry Chemical Physics 21, no 4 (2019) : 2115–20. http://dx.doi.org/10.1039/c8cp06638h.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
24

Lange, Ridgley, et Shengwang Wang. « Cohyponormal operators with the single valued extension property ». International Journal of Mathematics and Mathematical Sciences 9, no 4 (1986) : 659–63. http://dx.doi.org/10.1155/s0161171286000820.

Texte intégral
Résumé :
It is proved that in order to find a nontrivial hyperinvariant subspace for a cohyponormal operator it suffices to make the further assumption that the operator have the single-valued extension property.
Styles APA, Harvard, Vancouver, ISO, etc.
25

Saeed, Syed Tauseef, Kashif Ali Abro et Sikandar Almani. « Role of single slip assumption on the viscoelastic liquid subject to non‐integer differentiable operators ». Mathematical Methods in the Applied Sciences 44, no 7 (18 janvier 2021) : 6005–20. http://dx.doi.org/10.1002/mma.7164.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
26

Hara, K., K. Nishino et K. lkeuchi. « Light source position and reflectance estimation from a single view without the distant illumination assumption ». IEEE Transactions on Pattern Analysis and Machine Intelligence 27, no 4 (avril 2005) : 493–505. http://dx.doi.org/10.1109/tpami.2005.82.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
27

Stringham, Edward Peter. « The fable of the leeches, or : The single most unrealistic positive assumption of most economists ». Review of Austrian Economics 30, no 4 (25 septembre 2017) : 401–13. http://dx.doi.org/10.1007/s11138-017-0402-3.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
28

Kim, J. I. « The Ph4AsPh4B Assumption for Single Ion-Thermodynamics and its Asymmetric Partition to Cation and Anion ». Bulletin des Sociétés Chimiques Belges 95, no 5-6 (1 septembre 2010) : 435–46. http://dx.doi.org/10.1002/bscb.19860950517.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
29

Weston, PH, et MD Crisp. « Cladistic biogeography of waratahs (Proteaceae, Embothrieae) and their allies across the pacific ». Australian Systematic Botany 7, no 3 (1994) : 225. http://dx.doi.org/10.1071/sb9940225.

Texte intégral
Résumé :
The Proteaceae are often said to be a 'relict Gondwanan group' because they are disjunctly distributed over several southern continental blocks. Such distributions are shown by 12 different taxa above species-level in the family, which is thus potentially useful in cladistic studies of Southern Hemisphere biogeography. We have produced well-corroborated cladograms for the subtribe Embothriinae and its sister-taxon, Lomatia. These taxa have almost identical distributions within eastern Australia and western South America. Distributions of most species of Embothriinae are relatively narrow and we have used them to define areas of endemism for analysis. We analysed the biogeographic relationships of these areas under Assumptions 1 and 2 of Nelson and Platnick and Assumption 0 of Zandee and Roos, using R.D.M. Page's program COMPONENT. When analysed separately, Embothriinae and Lomatia share no area-cladograms under any assumption. The similarity between the two suites of area-cladograms, obtained in turn under each assumption, was assessed in terms of the symmetric difference of triplets. Under Assumptions 0 and 2 at least, the similarity between area-cladograms of Lomatia and Ernbothriinae appeared higher than would be expected due to chance. We took this as a fair indication that the two groups share congruent area-patterns, which justified analysing them as a single group. When analysed as a whole, the {Lomatia + Ernbothriinae} clade yielded a single most parsimonious cladogram under the 'items of error' parsimony criterion (Assumption 1) and the same cladogram plus several others under the 'Wagner' parsimony criterion (Assumption 0). The single cladogram on which these analyses agree seems to be consistent with conventional geological theories, assuming a history of vicariance events caused by continental break-up and climatic change.
Styles APA, Harvard, Vancouver, ISO, etc.
30

Trushechkin, Anton. « Security of quantum key distribution with detection-efficiency mismatch in the multiphoton case ». Quantum 6 (22 juillet 2022) : 771. http://dx.doi.org/10.22331/q-2022-07-22-771.

Texte intégral
Résumé :
Detection-efficiency mismatch is a common problem in practical quantum key distribution (QKD) systems. Current security proofs of QKD with detection-efficiency mismatch rely either on the assumption of the single-photon light source on the sender side or on the assumption of the single-photon input of the receiver side. These assumptions impose restrictions on the class of possible eavesdropping strategies. Here we present a rigorous security proof without these assumptions and, thus, solve this important problem and prove the security of QKD with detection-efficiency mismatch against general attacks (in the asymptotic regime). In particular, we adapt the decoy state method to the case of detection-efficiency mismatch.
Styles APA, Harvard, Vancouver, ISO, etc.
31

Luo, Q., et D. B. Melrose. « Orthogonal Mode Polarization of Pulsar Radio Emission ». Symposium - International Astronomical Union 218 (2004) : 381–82. http://dx.doi.org/10.1017/s0074180900181434.

Texte intégral
Résumé :
We discuss a model for polarization of pulsar radio emission, based on the assumption that waves propagate in two elliptically polarized natural modes. Some results from numerical simulation of single pulses are discussed with emphasis on circular polarization, microstructures and single pulse statistics.
Styles APA, Harvard, Vancouver, ISO, etc.
32

Han, Lin, Wentie Niu, Dawei Zhang et Fujun Wang. « An Improved Algorithm for Calculating Friction Force and Torque in Involute Helical Gears ». Mathematical Problems in Engineering 2013 (2013) : 1–13. http://dx.doi.org/10.1155/2013/575302.

Texte intégral
Résumé :
Time varying frictional force and torque are one of the main exciting sources of vibration in helical gears. This paper presents an approach to determine the friction force and torque in involute helical gears considering nonuniform load distribution along contact lines. An analytical load distribution model is employed and extended to obtain the load per unit of length along contact lines. Friction force and torque models under nonuniform assumption are derived. Comparisons of the determined friction force and torque with the results from uniform assumption are made. In addition, the differences between constant friction coefficient and varying coefficient are revealed. Moreover, two typical design cases of helical gears are studied. Results show that the fluctuations of friction force and torque under uniform assumption are more significant than those under nonuniform assumption in sample I for a single tooth, but less significant for the sum of those of the three teeth, while in sample II, the fluctuations under uniform assumption are less significant than those under nonuniform assumption. The friction coefficient induced difference is negligible compared with the difference induced by load distribution assumptions.
Styles APA, Harvard, Vancouver, ISO, etc.
33

WILCZYNSKI, KRZYSZTOF. « A mathematical model of the single-screw extrusion process. Part I. General assumption of the model ». Polimery 31, no 12 (décembre 1986) : 470–72. http://dx.doi.org/10.14314/polimery.1986.470.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
34

Bouwkamp, J. C. « Competition Effects in Single-row Plot Sweet Potato Yield Trials ». HortScience 21, no 5 (octobre 1986) : 1227–28. http://dx.doi.org/10.21273/hortsci.21.5.1227.

Texte intégral
Résumé :
Abstract Yield trials of named cultivars and advanced breeding lines are used frequently by breeders to make final determinations concerning the naming and release of breeding lines. Often a single-row per line replicate is planted and harvested due to constraints of time, space, and/or planting materials. An implicit assumption is that there is no effect on an entry by adjacent rows. The assumption was tested using data from 7 years of sweet potato yield trials. Data were not analyzed for the 1977 crop due to unavailability of the plot plan. In 1980, no yield trial was conducted and in 1982 sequential harvests of random portions of each row rendered analyses for competition inappropriate.
Styles APA, Harvard, Vancouver, ISO, etc.
35

Liang, Xudong. « An Integrating Velocity–Azimuth Process Single-Doppler Radar Wind Retrieval Method ». Journal of Atmospheric and Oceanic Technology 24, no 4 (1 avril 2007) : 658–65. http://dx.doi.org/10.1175/jtech2047.1.

Texte intégral
Résumé :
Abstract Among the single-Doppler radar wind analysis methods, the velocity–azimuth display (VAD), velocity–azimuth process (VAP), and uniform-wind (UW) methods are widely used because of their simplicity. This paper shows that the VAD, VAP, and UW methods can all be derived from the same relationship based on the azimuthal uniform-wind assumption. Using this assumption, an integrating VAP (IVAP) method is developed that can provide a smoother wind field than the VAP and UW methods and a higher resolution than the VAD method. Using the IVAP technique, the wind fields associated with a heavy rainfall case in Shanghai, China, are retrieved and compared with those from surface observations and wind-profiler data.
Styles APA, Harvard, Vancouver, ISO, etc.
36

Bours, Madelon, Silvia Toonen et Gijs Nelemans. « Single Degenerate Progenitors of Type Ia Supernovae ». Proceedings of the International Astronomical Union 7, S281 (juillet 2011) : 248–50. http://dx.doi.org/10.1017/s1743921312015141.

Texte intégral
Résumé :
AbstractThere is a general agreement that Type Ia supernovae correspond to the thermonuclear runaway of a white dwarf (WD) in a compact binary. The details of these progenitor systems are still unclear. Using the population synthesis code SeBa and several assumption for the WD retention efficiency, we estimate the delay times and supernova rates for the single degenerate scenario.
Styles APA, Harvard, Vancouver, ISO, etc.
37

Chivers, Meredith L., et Lori A. Brotto. « Controversies of Women’s Sexual Arousal and Desire ». European Psychologist 22, no 1 (janvier 2017) : 5–26. http://dx.doi.org/10.1027/1016-9040/a000274.

Texte intégral
Résumé :
Abstract. The past three decades have seen an unprecedented increase in empirical research on women’s sexual response. In this review, we critically examine current controversies and assumptions associated with the nature of women’s sexual arousal and desire. We focus specifically on four assumptions: (1) the assumption that women should be aroused by stimuli that align with their stated preferences, (2) the assumption that women’s physiological and self-reported arousal should perfectly align, (3) the assumption that sexual desire precedes sexual arousal, and (4) the assumption that a single pharmaceutical compound will adequately restore women’s sexual response to her level of satisfaction. Engaging a gendered psychological framework for conceptualizing women’s sexuality, we emphasize the need for models of women’s sexual response to be sensitive to the sexed biological processes and gendered psychosocial factors that contribute to a woman’s unique sexual experience.
Styles APA, Harvard, Vancouver, ISO, etc.
38

Weng, Xudong. « Retrieval of the single loss spectrum with Johnson-Spence method ». Proceedings, annual meeting, Electron Microscopy Society of America 44 (août 1986) : 720–21. http://dx.doi.org/10.1017/s0424820100144978.

Texte intégral
Résumé :
A method using fourier transform and logarithm for the retrieval of the single scattering electron energy loss spectrum from the experimental multiple data has been described and used previously. However, the uniqueness of this method is proved only under an additional assumption that no energy gain processes occur as the incident electron pass through the specimen. This proof is adopted in the later review papers. In this paper we prove the uniqueness without such an assumption, although in comparison with the energy loss processes, the energy gain processes usually have negligible differential cross sections, provided the relaxation times for the excitation inside the specimen are short enough with respect to the amount of energy loss. Also we shall compare deconvolution methods for the low loss region.
Styles APA, Harvard, Vancouver, ISO, etc.
39

Venkatraman, E. S., Nandita Mitra et Colin B. Begg. « A Method for Evaluating the Impact of Individual Haplotypes on Disease Incidence in Molecular Epidemiology Studies ». Statistical Applications in Genetics and Molecular Biology 3, no 1 (7 janvier 2004) : 1–20. http://dx.doi.org/10.2202/1544-6115.1056.

Texte intégral
Résumé :
Estimation of the association between haplotypes and disease from a case-control study is considered. Assuming a single “disease haplotype" leads to the increased risk, attention focusses on the relative risks associated with a single copy, or two copies of the disease haplotype, relative to individuals with no copies. In this setting, case frequencies of the haplotype pairs are in Hardy-Weinberg Equilibrium (HWE) only if the combined influence of the two copies of the disease haplotype on risk is multiplicative. Thus, imputation cannot rely on the assumption of HWE for cases. A method is presented for obtaining estimates of the relative risks, making use of the EM algorithm and the assumption of HWE only for controls. The method accounts for the additional variation in the estimates due to the imputation of expected frequencies of haplotype pairs from ambiguous genotypes. A simulation study shows that the resulting confidence intervals have nominal coverage, and that the methods based on the assumption of HWE for both cases and controls can lead to bias.
Styles APA, Harvard, Vancouver, ISO, etc.
40

MINGMEI, XU, et LIU LIANSHOU. « SOME DISCUSSIONS INSPIRED BY THE FLUCTUATION OF SINGLE-EVENT pt DISTRIBUTION ». International Journal of Modern Physics E 16, no 10 (novembre 2007) : 3323–30. http://dx.doi.org/10.1142/s0218301307009294.

Texte intégral
Résumé :
Starting from the assumption that it is the single-event pt distribution, not only the event-wise Mpt , fluctuates E-by-E, we discuss the relation between the variance of Mpt and the two-particle pt correlation. An evaluation of statistical fluctuation is given. For an example, we use an exponential single-event pt distribution to extract E-by-E dynamical fluctuation of single-event pt distribution from experimental data.
Styles APA, Harvard, Vancouver, ISO, etc.
41

Gonçalves, CS, et MA Batalha. « Towards testing the "honeycomb rippling model" in cerrado ». Brazilian Journal of Biology 71, no 2 (mai 2011) : 401–8. http://dx.doi.org/10.1590/s1519-69842011000300009.

Texte intégral
Résumé :
Savannas are tropical formations in which trees and grasses coexist. According to the "honeycomb rippling model", inter-tree competition leads to an effect of trees growing and dying due to competition, which, at fine spatial scale, would resemble honeycomb rippling. The model predicts that the taller the trees, the higher the inter-tree distances and the evenness of inter-tree distances. The model had been corroborated in arid savannas, in what appears to be caused by uneven distribution of rains, but had not yet been tested in seasonal savannas, such as the cerrado, which could be caused by the irregular occurrence of fire.A basic assumption of the model is that strong inter-tree competition affects growth (estimated by height) and mortality (estimated by inter-tree distances). As a first step towards testing this model in the cerrado, we tested this assumption in a single cerrado patch in southeastern Brazil. We placed 80 quadrats, each one with 25 m², in which we sampled all shrubs and trees. For each individual, we measured its height and the distance to its nearest neighbour - the inter-tree distance. We did not find correlations between tree height and both inter-tree distances and evenness of inter-tree distances, refuting the honeycomb rippling model. Inter-tree distances were spatially autocorrelated, but height was not. According to our results, the basic assumption of the model does not apply to seasonal savannas. If, in arid savannas, rainfall events are rare and unpredictable, in seasonal savannas, the rainy season is well-defined and rainfall is considerable. We found horizontal structuring in the community, which may be due to soil nutrient heterogeneity. The absence of vertical structuring suggests that competition for light among adult trees is not as important as competition for nutrients in the soil. We tested the basic assumption of the model in a single patch and at a single moment. To test the model effectively, we suggest this assumption to be tested in many patches over time.
Styles APA, Harvard, Vancouver, ISO, etc.
42

Weinstock, J. « A theory of turbulent transport ». Journal of Fluid Mechanics 202 (mai 1989) : 319–38. http://dx.doi.org/10.1017/s0022112089001205.

Texte intégral
Résumé :
A calculation is made of the turbulent transport terms (third moments) that occur in the Reynolds stress equation for buoyant and/or sheared fluids. This calculation is based on neglect of a two-time fourth-order cumulant – a weaker approximation than neglect of the usual single-time fourth-order cumulant. The previously used eddy-damping assumption for single point moments is avoided. This assumption is then examined critically. Comparison is afterward made between the turbulent transport terms derived here and those derived previously by the eddy-damping method, and between the respective derivations. Also the dissipation of third moments is calculated. The calculation is formally limited to mean quantities which vary but slowly in space and time, and to small anisotropy.
Styles APA, Harvard, Vancouver, ISO, etc.
43

Przekop, Rafał. « Estimation of Filtration Efficiency – from Simple Correlations to Digital Fluid Dynamics ». Chemical and Process Engineering 38, no 1 (1 mars 2017) : 31–50. http://dx.doi.org/10.1515/cpe-2017-0004.

Texte intégral
Résumé :
AbstractAerosol filtration in fibrous filters is one of the principal methods of accurate removal of particulate matter from a stream of gas. The classical theory of depth filtration of aerosol particles in fibrous structures is based on the assumption of existing single fibre efficiency, which may be used to recalculate the overall efficiency of entire filter. Using “classical theory” of filtration one may introduce some errors, leading finally to a discrepancy between theory and experiment. There are several reasons for inappropriate estimation of the single fibre efficiency: i) neglecting of shortrange interactions, ii) separation of inertial and Brownian effects, ii) perfect adhesion of particles to the fibre, iv) assumption of perfect mixing of aerosol particles in the gas stream, v) assumption of negligible effect of the presence of neighbouring fibres and vi) assumption of perpendicular orientation of homogenous fibres in the filtration structure. Generally speaking, “classical theory” of filtration was used for characterization of the steady - state filtration process (filtration in a clean filter, at the beginning of the process) without deeper investigation of the influence of the nternal structure of the filter on its performance. The aim of this review is to outline and discuss the progress of deep-bed filtration modelling from the use of simple empirical correlations to advanced techniques of Computational Fluid Dynamics and Digital Fluid Dynamics.
Styles APA, Harvard, Vancouver, ISO, etc.
44

Wapenaar, C. P. A., D. J. Verschuur et P. Herrmann. « Amplitude preprocessing of single and multicomponent seismic data ». GEOPHYSICS 57, no 9 (septembre 1992) : 1178–88. http://dx.doi.org/10.1190/1.1443331.

Texte intégral
Résumé :
Whenever the data acquisition is restricted to line surveys rather than areal surveys, seismic processing is necessarily in two dimensions. In this paper it is argued that two‐dimensional (2-D) processing is preferably applied after transforming the point source responses into line source responses. The effect of this transformation is a correction of the amplitudes in the data. For single‐component acoustic data as well as for multicomponent elastic data a line source response is nothing but a superposition of point source responses. Hence, in principle a line source response can be synthesized by integrating point source responses along the desired line source axis. In practice, however, this integration cannot be carried out due to the incompleteness of the data. It is shown that the integration along the source axis can be replaced by an integration along the receiver axis. The underlying assumption is that the wavefields exhibit a certain type of cylindrical symmetry. For horizontally layered acoustic and elastic media this assumption is fully satisfied. For 2-D inhomogeneous media this assumption is approximately satisfied, provided the data are sorted in CMP gathers. Having transformed the point source responses into line source responses, the results may be considered as “true amplitude” 2-D data. Hence, proceeding with existing 2-D seismic processing techniques is then justified.
Styles APA, Harvard, Vancouver, ISO, etc.
45

Yim, Chi Ming, Chi L. Pang, Diego R. Hermoso, Coinneach M. Dover, Christopher A. Muryn, Francesco Maccherozzi, Sarnjeet S. Dhesi, Rubén Pérez et Geoff Thornton. « Influence of support morphology on the bonding of molecules to nanoparticles ». Proceedings of the National Academy of Sciences 112, no 26 (15 juin 2015) : 7903–8. http://dx.doi.org/10.1073/pnas.1506939112.

Texte intégral
Résumé :
Supported metal nanoparticles form the basis of heterogeneous catalysts. Above a certain nanoparticle size, it is generally assumed that adsorbates bond in an identical fashion as on a semiinfinite crystal. This assumption has allowed the database on metal single crystals accumulated over the past 40 years to be used to model heterogeneous catalysts. Using a surface science approach to CO adsorption on supported Pd nanoparticles, we show that this assumption may be flawed. Near-edge X-ray absorption fine structure measurements, isolated to one nanoparticle, show that CO bonds upright on the nanoparticle top facets as expected from single-crystal data. However, the CO lateral registry differs from the single crystal. Our calculations indicate that this is caused by the strain on the nanoparticle, induced by carpet growth across the substrate step edges. This strain also weakens the CO–metal bond, which will reduce the energy barrier for catalytic reactions, including CO oxidation.
Styles APA, Harvard, Vancouver, ISO, etc.
46

Baxter, Victoria M., Justin W. Andrushko et Ulrich Teucher. « Size Matters : Package Size Influences Recognition of Serving Size Information ». Canadian Journal of Dietetic Practice and Research 79, no 4 (1 décembre 2018) : 200–202. http://dx.doi.org/10.3148/cjdpr-2018-020.

Texte intégral
Résumé :
Purpose: To identify the impact of package size on an individual’s use of serving size information. The hypothesis was that participants would make more serving size assumption errors on a nutrition facts table (NFT) interpretation task when assessing packages that appear as a single serving but contain multiple servings, compared with products that appear as a multi-serving and contain multiple servings. Methods: Sixty participants were randomized into 1 of 3 conditions (n = 20 each); products that appeared as a single serving and contain a single serving (SSSS), products that appeared as a single serving and contain multiple servings (SSMS), and products that both appear as a multi-serving and contain multiple servings (MSMS). All 3 conditions were tested on a NFT interpretation task while participants were being presented food items that were appropriate to their given condition. Results: Participants in the SSMS (9.55 ± 7.78) condition made significantly more serving size assumption errors than the SSSS (0.00 ± 0.00; P < 0.001) and MSMS (0.40 ± 0.75; P < 0.001) conditions. Conclusions: Participants did not address serving size information when they perceived a product to be a single serving. This resulted in people misinterpreting nutritional and caloric content of foods that were single unit foods with multiple servings.
Styles APA, Harvard, Vancouver, ISO, etc.
47

Christer, A. H. « The robustness of the semi-Markov and delay time single-component inspection models to the Markov assumption ». IMA Journal of Management Mathematics 12, no 1 (1 juillet 2001) : 75–88. http://dx.doi.org/10.1093/imaman/12.1.75.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
48

Comte, M., et T. Lachand-Robert. « Existence of minimizers for Newton's problem of the body of minimal resistance under a single impact assumption ». Journal d'Analyse Mathématique 83, no 1 (décembre 2001) : 313–35. http://dx.doi.org/10.1007/bf02790266.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
49

Piekarska, Alina, et Stefania Taniewska-Osińska. « Single-ion transfer enthalpies in methanol-acetonitrile mixtures at 298.15 K based on the Ph4P+ = BPh4− assumption ». Thermochimica Acta 194 (janvier 1992) : 109–16. http://dx.doi.org/10.1016/0040-6031(92)80009-l.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
50

Stobińska, Magdalena, et Robert Alicki. « Single-Photon Single-Ion Interaction in Free Space Configuration in Front of a Parabolic Mirror ». Open Systems & ; Information Dynamics 19, no 04 (décembre 2012) : 1250023. http://dx.doi.org/10.1142/s1230161212500230.

Texte intégral
Résumé :
The efficient interaction between single photons and single matter objects in free space is of key importance for quantum technologies. An experimental setup for testing this possibility involves single two-level ion trapped at the focus of a parabolic metallic mirror. We study the conditions for the setup, under which the assumption about the free-space mode structure of the radiation field in the vicinity of the atom is justified. In our analysis we apply vectorial properties of light by including the polarization degree of freedom. We look for possible changes in the spontaneous emission rate of the atom resulting from the presence of the parabolic boundary conditions.
Styles APA, Harvard, Vancouver, ISO, etc.
Vous pouvez également être intéressé par les bibliographies sur le sujet « Single-assumption » pour d’autres types de sources :
Livres
Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!

Vers la bibliographie