Results 51 to 60 of about 14,311,403 (384)

Higher-order co-moments in asset pricing on the stock exchange in Brazil

GEPROS: Gestão da Produção, Operações e Sistemas, 2015
This study seeks to identify the behavior of systemic asymmetry (coskewness) and systemic kurtosis (cokurtosis) in asset pricing on the Brazilian stock exchange (in BM&F Bovespa).
Paulo Vitor Jordão da Gama Silva, Marcelo Cabus Klotzle, Antonio Carlos Figueiredo Pinto   +2 more
doaj   +1 more source

Optimum parameters extraction of proton exchange membrane fuel cells using Fractional‐Order Whale Optimization Algorithm

Energy Science & Engineering, 2022
This study proposes a novel metaheuristic‐based technique for optimum parameters' estimation of the proton exchange membrane fuel cells (PEMFCs). To provide better results with more reliability and accuracy, a Fractional Order‐based design of the Whale ...
Xiaohui Ren, Mahdiyeh Eslami
doaj   +1 more source

Quantum phase transition in the Plaquette lattice with anisotropic spin exchange

, 2003
I study the influence of anisotropic spin exchange on a quantum phase transition in the Plaquette lattice driven by the purely quantum effect of singlet formation. I study the influence of i) a Dzyaloshinskii-Moriya exchange and ii) four spin exchange on
A. Voigt, Clayhold, Coldea, Koga, Matsuda, Singh, Voigt, Voigt   +7 more
core   +1 more source

Competing Spin Liquids and Hidden Spin-Nematic Order in Spin Ice with Frustrated Transverse Exchange

Physical Review X, 2017
Frustration in magnetic interactions can give rise to disordered ground states with subtle and beautiful properties. The spin ices Ho_{2}Ti_{2}O_{7} and Dy_{2}Ti_{2}O_{7} exemplify this phenomenon, displaying a classical spin-liquid state, with ...
Mathieu Taillefumier, Owen Benton, Han Yan, L. D. C. Jaubert, Nic Shannon   +4 more
doaj   +1 more source

Economics and Economic Order of Societies*

Studia i Materiały, 2021
Departing from the distinction proposed by J. Buchanan between thinking in economics in terms of the theory of choice and analysis in categories of exchange and coordination, we claim that the Hayekian concept of economic order has a significant ...
Zbigniew Hockuba
doaj   +1 more source

The Time-Reversal- and Parity-Violating Nuclear Potential in Chiral Effective Theory [PDF]

, 2011
We derive the parity- and time-reversal-violating nuclear interactions stemming from the QCD theta term and quark/gluon operators of effective dimension 6: quark electric dipole moments, quark and gluon chromo-electric dipole moments, and two four-quark ...
Abramowitz, Aoki, Avishai, Avishai, Baker, Baluni, Barton, Beane, Beane, Beane, Beane, Bedaque, Bedaque, Bernard, Bernard, Berruto, Birse, Birse, Bodek, Bolton, Borasoy, Buchmüller, C.M. Maekawa, Callan, Cheng, Cho, Coon, Crewther, Crewther, de Jesus, De Rújula, de Vries, de Vries, Desplanques, Desplanques, Dmitriev, Dmitriev, Dobaczewski, E. Mereghetti, Epelbaum, Epelbaum, Epelbaum, Epelbaum, Epelbaum, Farley, Fettes, Filin, Flambaum, Flambaum, Flambaum, Friar, Friar, Friar, Friar, Friar, Friar, Friar, Gasser, Gasser, Gasser, Gelfand, Girlanda, Gradshteyn, Grießhammer, Griffith, Griffiths, Grzadkowski, Gudkov, Gudkov, Haxton, Herczeg, Herczeg, Herczeg, Hocker, Hockings, Hoferichter, Holstein, Hyun, Hyun, Ito, J. de Vries, Jackiw, Jenkins, Kaiser, Kaiser, Kaiser, Kaiser, Kaplan, Kaplan, Kaplan, Kaplan, Khriplovich, Korkin, Lebedev, Liu, Liu, Liu, Liu, Long, Machleidt, Maekawa, Maekawa, Manohar, Meißner, Mereghetti, Mereghetti, Nakamura, Narison, Nico, Niskanen, Niskanen, Nogga, Nunokawa, Onderwater, Ordóñez, Ordóñez, Ordóñez, Ottnad, Park, Pavón Valderrama, Pavón Valderrama, Phillips, Pich, Pospelov, Ramsey-Musolf, Rentmeester, Schiavilla, Schindler, Shin, Shintani, Song, Stetcu, Stoks, Stoks, Thomas, Tiator, Towner, U. van Kolck, van Kolck, van Kolck, van Kolck, van Kolck, van Kolck, van Kolck, van Kolck, van Kolck, Viviani, Weinberg, Weinberg, Weinberg, Weinberg, Weinberg, Zhu, Zhu, Zhu, ʼt Hooft   +155 more
core   +3 more sources

The carboxylate “gripper” of the substrate is critical for C‐4 stereo‐inversion by UDP‐glucuronic acid 4‐epimerase

FEBS Letters, EarlyView.
UDP‐glucuronic acid 4‐epimerase (UGAepi) catalyzes NAD+‐dependent interconversion of UDP‐glucuronic acid (UDP‐GlcA) and UDP‐galacturonic acid (UDP‐GalA) via C4‐oxidation, 4‐keto‐intermediate rotation, and C4‐reduction. Here, Borg et al. examined the role of the substrate's carboxylate group in the enzymic mechanism by analyzing NADH‐dependent reduction
Annika J. E. Borg, Laura De Cnop, Bernd Nidetzky   +2 more
wiley   +1 more source

The effect of macroeconomic variables on exchange rate: Evidence from Ghana

Cogent Economics & Finance, 2020
The study examined the effect of macroeconomic variables on exchange rate in Ghana using a multivariate modeling technique of the Vector Autoregression (VAR) and focusing on impact of broad money supply (M2), lending rate, inflation and real GDP on ...
Samuel Antwi, Mohammed Issah, Aboagyewaa Patience, Solomon Antwi   +3 more
doaj   +1 more source

Evolutionary interplay between viruses and R‐loops

FEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi, Zita Képes, Zoltán Szabó, Eszter Csoma, Lóránt Székvölgyi   +4 more
wiley   +1 more source

Exchange rate regimes and external financial stability [PDF]

Ekonomski Anali, 2016
Financial stability within the framework of the global financial crisis has become a common topic for researchers and practitioners. In order to analyse the impact of exchange rate regimes on financial stability we use both the de jure and de ...
Stoica Ovidiu, Ihnatov Iulian
doaj   +1 more source