Precise Analysis of String Expressions

Author(s):  
Aske Simon Christensen ◽  
Anders Møller ◽  
Michael I. Schwartzbach
Keyword(s):  
2018 ◽  
Author(s):  
Zoltán Kis ◽  
Katalin Gméling ◽  
Tímea Kocsis ◽  
János Osán ◽  
Mihály András Pocsai ◽  
...  

We present precise analysis of major and trace elements of the humic acid. We used three different element analytical techniques in our investigations as prompt-gamma activation analysis (PGAA), neutron activation analysis (NAA) and X-ray fluorescence (XRF) analysis was carried out. We identified 42 elements in our sample.


2021 ◽  
Vol 143 (2) ◽  
pp. 301-335
Author(s):  
Jendrik Voss ◽  
Ionel-Dumitrel Ghiba ◽  
Robert J. Martin ◽  
Patrizio Neff

AbstractWe consider the volumetric-isochoric split in planar isotropic hyperelasticity and give a precise analysis of rank-one convexity criteria for this case, showing that the Legendre-Hadamard ellipticity condition separates and simplifies in a suitable sense. Starting from the classical two-dimensional criterion by Knowles and Sternberg, we can reduce the conditions for rank-one convexity to a family of one-dimensional coupled differential inequalities. In particular, this allows us to derive a simple rank-one convexity classification for generalized Hadamard energies of the type $W(F)=\frac{\mu }{2} \hspace{0.07em} \frac{\lVert F \rVert ^{2}}{\det F}+f(\det F)$ W ( F ) = μ 2 ∥ F ∥ 2 det F + f ( det F ) ; such an energy is rank-one convex if and only if the function $f$ f is convex.


2020 ◽  
Vol 61 (1) ◽  
pp. 259-277
Author(s):  
Birger P. Priddat

AbstractDouglass C. North developed his institutional economics in critical contrast to Polanyi’s reciprocity/exchange scheme. More precise analysis, however, allows North’s institutions to decode reciprocity, so that North’s theory appears not as a counterpoint to Polanyi, but as a further development – albeit with partially opposite consequences. This contrast is illustrated through the reconstruction of the ancient economy.


2021 ◽  
Vol 49 (4) ◽  
pp. 483-495
Author(s):  
Cong-Cong SHEN ◽  
Cheng-Ke WU ◽  
Yue-Hua CHEN ◽  
Jian-Xiu WANG ◽  
Ming-Hui YANG ◽  
...  

RSC Advances ◽  
2021 ◽  
Vol 11 (40) ◽  
pp. 25084-25095
Author(s):  
Umay Amara ◽  
Sara Riaz ◽  
Khalid Mahmood ◽  
Naeem Akhtar ◽  
Muhammad Nasir ◽  
...  

Exploring a robust, extremely sensitive, cost-effective and reliable assay platform for the precise analysis of dopamine (DA) has become a big challenge predominantly at the clinical level.


2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Belinda De Simone ◽  
Justin Davies ◽  
Elie Chouillard ◽  
Salomone Di Saverio ◽  
Frank Hoentjen ◽  
...  

Abstract Background Despite the current therapeutic options for the treatment of inflammatory bowel disease, surgery is still frequently required in the emergency setting, although the number of cases performed seems to have decreased in recent years. The World Society of Emergency Surgery decided to debate in a consensus conference of experts, the main pertinent issues around the management of inflammatory bowel disease in the emergent situation, with the need to provide focused guidelines for acute care and emergency surgeons. Method A group of experienced surgeons and gastroenterologists were nominated to develop the topics assigned and answer the questions addressed by the Steering Committee of the project. Each expert followed a precise analysis and grading of the studies selected for review. Statements and recommendations were discussed and voted at the Consensus Conference of the 6th World Society of Emergency Surgery held in Nijmegen (The Netherlands) in June 2019. Conclusions Complicated inflammatory bowel disease requires a multidisciplinary approach because of the complexity of this patient group and disease spectrum in the emergency setting, with the aim of obtaining safe surgery with good functional outcomes and a decreasing stoma rate where appropriate.


2014 ◽  
Vol 24 (1) ◽  
pp. 195-215
Author(s):  
JEFFREY GAITHER ◽  
GUY LOUCHARD ◽  
STEPHAN WAGNER ◽  
MARK DANIEL WARD

We analyse the first-order asymptotic growth of \[ a_{n}=\int_{0}^{1}\prod_{j=1}^{n}4\sin^{2}(\pi jx)\, dx. \] The integer an appears as the main term in a weighted average of the number of orbits in a particular quasihyperbolic automorphism of a 2n-torus, which has applications to ergodic and analytic number theory. The combinatorial structure of an is also of interest, as the ‘signed’ number of ways in which 0 can be represented as the sum of ϵjj for −n ≤ j ≤ n (with j ≠ 0), with ϵj ∈ {0, 1}. Our result answers a question of Thomas Ward (no relation to the fourth author) and confirms a conjecture of Robert Israel and Steven Finch.


2018 ◽  
Vol 55 (2) ◽  
pp. 147-168 ◽  
Author(s):  
Andrew Adams ◽  
Emma Kavanagh

High performance athletes participate and function in sports systems where exploitative behaviours may become manifest. These behaviours potentially violate an individual athlete’s human rights. Using the Capability Approach first outlined by Amartya Sen the paper details how a more precise analysis of human rights, in the context of high performance sport, may be achieved. Using in-depth narrative accounts from high performance athletes, data illustrate how athlete maltreatment is related to individual capabilities and functionings: the loss of individual freedoms infringes accepted notions of human rights. The implications for practice concern how human rights may be protected within and for systems of high performance production.


1989 ◽  
Vol 66 (1) ◽  
pp. 61-71 ◽  
Author(s):  
C. G. Hammond ◽  
D. C. Gordon ◽  
J. T. Fisher ◽  
F. J. Richmond

Recent studies have demonstrated that, under certain circumstances, the diaphragm does not contract as a homogeneous unit. These observations suggest that motor units may not be randomly distributed throughout the muscle but confined to localized subvolumes. In the present study, electromyographic (EMG) and glycogen depletion methods were combined to investigate the organization of motor units supplied by the primary branches of the phrenic nerve in the cat. Four primary branches are generally present, one branch to the crus and three branches to the sternocostal region. The gross motor-unit territory of each of the four phrenic primary branches was determined by stimulating each nerve separately, while recording from nine EMG electrodes distributed over the hemidiaphragm. Stimulation of the crural branch evoked activity in the ipsilateral crus, whereas stimulation of each of the remaining branches evoked activity in discrete but overlapping areas of the sternocostal diaphragm. A more precise analysis of the distribution and borders of the motor territories was obtained by mapping regions depleted of muscle glycogen due to stimulation of each primary branch for 90 min. Glycogen depletion results closely matched the EMG findings of a localized distribution of motor units served by single primary branches. Stimulation of the crural branch typically caused depletion of the ipsilateral crus, whereas the sternocostal branches each served a striplike compartment. In the majority of cases, the borders of the sternocostal compartments were relatively abrupt and consisted of a 1- to 2-mm transition zone of depleted and nondepleted fibers. These studies demonstrate that motor unit territories of the primary branches of the phrenic nerve are highly delineated. This compartmentalization provides the central nervous system with the potential for a more precise regional motor control of costal and crural diaphragm than previously suspected.


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