Showing 121 - 140 results of 152 for search 'R. Rohmann~', query time: 3.14s Refine Results
  1. 121

    Multiplicity Results to a Conformable Fractional Differential Equations Involving Integral Boundary Condition by Shuman Meng, Yujun Cui

    Published 2019-01-01
    “…In this article, by using topological degree theory couple with the method of lower and upper solutions, we study the existence of at least three solutions to Riemann-Stieltjes integral initial value problem of the type Dαx(t)=f(t,x),  t∈[0,1], x(0)=∫01x(t)dA(t), where Dαx(t) is the standard conformable fractional derivative of order α, 0<α≤1, and f∈C([0,1]×R,R). …”
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  2. 122

    The Existence and Uniqueness of a Class of Fractional Differential Equations by Zhanbing Bai, Sujing Sun, YangQuan Chen

    Published 2014-01-01
    “…By using inequalities, fixed point theorems, and lower and upper solution method, the existence and uniqueness of a class of fractional initial value problems, D0+qx(t)=f(t,x(t),  D0+q-1x(t)),  t∈(0,T),  x(0)=0,  D0+q-1x(0)=x0,  are discussed, where f∈C([0,T]×R2,R),D0+qx(t) is the standard Riemann-Liouville fractional derivative, 1<q<2. …”
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  3. 123
  4. 124

    Validação do teste aeróbio de corrida de vai-e-vem de 20 metros para escolares do gênero masculino de 13 e 14 anos by Sandro Márcio Ströher, Edilson Hobold, Lírio Levandoski Junior, Jardel Schlickmann

    Published 2009-03-01
    “…Os resultados sugerem uma correlação alta significativa (r=0,78; p<0,01) para a amostra, apresentando uma correlação alta de significância nas idades de 13 anos (r=0,72; p<0,05) e 14 anos (r=0,83; p<0,05). …”
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  5. 125

    Hyperspectral estimation of chlorophyll density in winter wheat using fractional-order derivative combined with machine learning by Chenbo Yang, Chenbo Yang, Meichen Feng, Juan Bai, Hui Sun, Rutian Bi, Lifang Song, Chao Wang, Yu Zhao, Wude Yang, Lujie Xiao, Meijun Zhang, Xiaoyan Song

    Published 2025-01-01
    “…The original spectral reflectance curves were preprocessed using 3 FOD methods: Grünwald-Letnikov (GL), Riemann-Liouville (RL), and Caputo. Hyperspectral monitoring models for winter wheat ChD were constructed using 8 machine learning algorithms, including partial least squares regression, support vector regression, multi-layer perceptron regression, random forest regression, extra-trees regression (ETsR), decision tree regression, K-nearest neighbors regression, and gaussian process regression, based on the full spectrum band and the band selected by competitive adaptive reweighted sampling (CARS). …”
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  6. 126

    Entre poésie et politique by Gérard Raulet

    Published 2024-12-01
    “…The extremes can be illustrated by Alfred Bauemler and Johannes R. Becher. On January 18, 1930, the Reichsgründungstag, Baeumler gave under this title in Dresden a speech to the students of the Deutsche Studentengemeinschaft. …”
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  7. 127

    Fostering positive affective exercise experiences and affect-related competencies for a physically active lifestyle: The FEEL Project – Results of the Pilot-Study by Martin Robert Bührer, Stephanie Rosenstiel, Gorden Sudeck, Julia Schmid

    Published 2025-01-01
    “…., Kreppke, J. N., Cody, R., Guthold, R., Woods, C., Brand, R., Dunton, G., Rothman, A., Ketelhut, S., & Nigg, C. (2022). …”
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  8. 128

    ADIPOSIDADE CORPÓREA E SUA RELAÇÃO COM O GASTO ENERGÉTICO E A COMPOSIÇÃO DA DIETA DE ESCOLARES DO SEXO FEMININO by Adriana Soares Lobo, Adair da Silva Lopes

    Published 2012-10-01
    “…Para verificar associações entre as variáveis utilizou-se a Correla­ção Linear de Pearson (r). O %G correlacionou-se de forma positiva e significativa com o percentual de lipídios (r = 0.42; p…”
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  9. 129

    Kapitał klienta a wartość rynkowa na przykładzie bankowości detalicznej by Aleksandra Snarska

    Published 2017-12-01
    “…Seybold, S. Gupta, D. Lehmann, R. Boulton, B. Liebert, S. Samek, R. Heiebeler, T. …”
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  10. 130

    Kapitał klienta a wartość rynkowa na przykładzie bankowości detalicznej by Aleksandra Snarska

    Published 2017-12-01
    “…Seybold, S. Gupta, D. Lehmann, R. Boulton, B. Liebert, S. Samek, R. Heiebeler, T. …”
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  11. 131

    Nowe źródła dotyczące muzykaliów w zbiorach magnackich II połowy XVIII wieku by Irena Bieńkowska

    Published 2024-12-01
    “….: wykaz muzykaliów z dworu Karola Stanisława Radziwiłła „Panie Kochanku” w Nieświeżu, który zakupił około 1778 r. kapelmistrz księcia – Johann Nicolaus Scholl, oraz spis nut przygotowanych dla dworu Izabeli i Ignacego Potockich w Kurowie, Klementowicach i Warszawie, zakupionych przez kompozytora i późniejszego królewskiego kapelmistrza Pietra Persichiniego. …”
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  12. 132

    Asymptotically Linear Solutions for Some Linear Fractional Differential Equations by Dumitru Baleanu, Octavian G. Mustafa, Ravi P. Agarwal

    Published 2010-01-01
    “…We establish here that under some simple restrictions on the functional coefficient a(t) the fractional differential equation D0tα[tx′−x+x(0)]+a(t)x=0,  t>0, has a solution expressible as ct+d+o(1) for t→+∞, where D0tα designates the Riemann-Liouville derivative of order α∈(0,1) and c,d∈.…”
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  13. 133
  14. 134

    The Role of Digital Fluorescence in Acne Vulgaris: Correlation of Ultraviolet Red Fluorescence with the Severity of Acne Vulgaris by Imam Budi Putra, Nelva K. Jusuf, Nani Kumala Dewi

    Published 2019-01-01
    “…Severity grade of acne vulgaris was found to be uncorrelated with the number of UVRF spots (r = 0.27, p=0.073) and percentage area covered with UVRF spots (r = 0.173, p=0.256). …”
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  15. 135

    Jump Diffusion Modelling for the Brazilian Short-Term Interest Rate by José Carlos Nogueira Cavalcante Filho, Edson Daniel Lopes Gonçalves

    Published 2015-01-01
    “…In order to capture the informational effect of the Brazilian short-term interest rate (SELIC rate) by Poisson jumps, we build on the tests condu cted by Das (2002) and Johannes (2004), which show the significance of such structures for U.S. …”
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  16. 136

    Konferencja naukowa z okazji 200. rocznicy powstania Towarzystwa Naukowego Krakowskiego by Tomasz Pudłocki

    Published 2016-11-01
    “…Materiały konferencji naukowej 9–10 grudnia 2015, pod redakcją Wandy Lohman (Kraków 2016).…”
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  17. 137

    Multi-Spectral Point Cloud Constructed with Advanced UAV Technique for Anisotropic Reflectance Analysis of Maize Leaves by Kaiyi Bi, Yifang Niu, Hao Yang, Zheng Niu, Yishuo Hao, Li Wang

    Published 2024-12-01
    “…Leaf reflectance anisotropy was characterized by the RPV model with R<sup>2</sup> ranging from 0.38 to 0.75 for five wavelength bands. …”
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  18. 138

    An application of s-elementary wavelets in numerical solution of differential and fractional integral equations by Mohammad Javad Kheirdeh, Ataollah Askari Hemmat, Habibollah Saeedi

    Published 2022-11-01
    “…In this article we introduce wavelet sets and consider a special wavelet set in R. We build a basis associated to this type wavelet sets and use operational matrix of this basis to solve nonlinear Riccati differential equations and Riemann-Liouville fractional integral equations of order $\alpha >0$, numerically. …”
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  19. 139

    Existence and Uniqueness of Solutions for Fractional Boundary Value Problems under Mild Lipschitz Condition by Imed Bachar, Habib Mâagli, Hassan Eltayeb

    Published 2021-01-01
    “…This paper deals with the following boundary value problem Dαut=ft,ut,t∈0,1,u0=u1=Dα−3u0=u′1=0, where 3<α≤4,Dα is the Riemann-Liouville fractional derivative, and the nonlinearity f, which could be singular at both t=0 and t=1, is required to be continuous on 0,1× satisfying a mild Lipschitz assumption. …”
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  20. 140