Results 31 to 40 of about 56,471 (243)
NEW UPPER AND LOWER BOUNDS LINE OF SIGHT PATH LOSS MODELS FOR MOBILE PROPAGATION IN BUILDINGS
ASEAN Journal on Science and Technology for Development, 2017 This paper proposes a method to predict line-of-sight (LOS) path loss in buildings. We performed measurements in two different type of buildings at a frequency of 1.8 GHz and propose new upper and lower bounds path loss models which depend on max and min
Supachai Phaiboon +2 more
doaj +1 more source
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
On the Achievable Stabilization Delay Margin for Linear Plants with Time-Varying Delays
Mathematics, 2017 The paper contributes to stabilization problems of linear systems subject to time-varying delays. Drawing upon small gain criteria and robust analysis techniques, upper and lower bounds on the largest allowable time-varying delay are developed by using ...
Jing Zhu
doaj +1 more source
FEBS Letters, EarlyView.Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii +8 more
wiley +1 more source
Upper and Lower Bounds for Capital and Wages
Economía Teoría y Práctica, 2012 El artículo estudia la división de un sistema de producción en los departamentos I y II e introduce una división posterior del departamento II en un sector homotético y otro complementario.
Alberto Benítez Sánchez +1 more
doaj
On the eigenvalues of the rhombical membrane [PDF]
Rendiconti di Matematica e delle Sue Applicazioni, 2000 In this paper both upper bounds and lower bounds are given for the first eigenvalues of a rhombical membrane with free boundary. The upper bounds are obtained through an application of the Rayleigh-Ritz method. The lower bounds are calculated by means of
Bruno Firmani, Maria Laura Leuzzi
doaj
A new sequence related to the Euler–Mascheroni constant
Journal of Inequalities and Applications, 2018 In this paper, we provide a new quicker sequence convergent to the Euler–Mascheroni constant using an approximation of Padé type. Our sequence has a relatively simple form and higher speed of convergence.
Shanhe Wu, Gabriel Bercu
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An Upper Bound on the Error Induced by Saddlepoint Approximations—Applications to Information Theory
Entropy, 2020 This paper introduces an upper bound on the absolute difference between: ( a ) the cumulative distribution function (CDF) of the sum of a finite number of independent and identically distributed random variables with finite absolute third moment;
Dadja Anade +3 more
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Tight bounds for the median of a gamma distribution.
PLoS ONE, 2023 The median of a standard gamma distribution, as a function of its shape parameter k, has no known representation in terms of elementary functions. In this work we prove the tightest upper and lower bounds of the form 2-1/k(A + k): an upper bound with A =
Richard F Lyon
doaj +1 more source
Vacuolar transport and function of Saccharomyces cerevisiae sterol ester hydrolase Tgl1
FEBS Letters, EarlyView.Tgl1, one of yeast sterol ester hydrolases, had been found on the lipid droplets where sterol esters are mainly stored. This study revealed that Tgl1 is transported into the vacuole depending on the ESCRT‐I–III complex, and that it exhibits intra‐vacuolar sterol ester hydrolase activity.
Takumi Nakatsuji +5 more
wiley +1 more source