Results 81 to 90 of about 953,956 (308)

EFFICIENCE DES MARCHES BOURSIERS : QU’EST-CE QUI MARGINALISE L’AFRIQUE ?

open access: yesRevue Economie, Gestion et Société, 2018
Almost of African stock markets are inefficient, contrary to stock market of others continent. This paper re-examine, in one hand, the efficiency, in Fama (1970) way, on 58 stocks market of all continents.
Mathieu AVOUTOU
doaj   +1 more source

Bioinspired Shape‐Memory Hook Fasteners With Programmable Interlocking and Silent Release

open access: yesAdvanced Engineering Materials, EarlyView.
Bioinspired hook fasteners made from epoxy shape‐memory polymers are shown to switch between strong, secure attachment and gentle, silent release when heated. By combining programmable geometry and material response, these adaptive fasteners outperform commercial systems in strength and noise control, enabling new solutions for robotics, medical ...
Maria I. Vallejo Ciro   +3 more
wiley   +1 more source

Influence of the Russia–Ukraine War and COVID-19 Pandemic on the Efficiency and Herding Behavior of Stock Markets: Evidence from G20 Nations

open access: yesEconomies
Efficiency in stock markets is essential for economic stability and growth. This study investigates the efficiency and herding behavior of the stock markets from the top economies of the world (known as G20 countries).
Bilal Ahmed Memon   +4 more
doaj   +1 more source

Are markets really efficient? [PDF]

open access: yes
Rational expectations (Economic theory) ; Speculation ; Stock exchanges ; Keynesian ...
Tom Klitgaard
core  

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

Proceedings of the Conference on Human and Economic Resources [PDF]

open access: yes
Recent development of information technologies and telecommunications have given rise to an extraordinary increase in the data transactions in the financial markets.
Alper Özün
core  

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Limited profit in predictable stock markets [PDF]

open access: yes, 2004
It has been assumed that arbitrage profits are not possible in efficient markets, because future prices are not predictable. Here we show that predictability alone is not a sufficient measure of market efficiency.
Barabási   +12 more
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

January effect on stock returns: Evidence from emerging Balkan equity markets [PDF]

open access: yesIndustrija, 2017
The motivation for testing anomalies in the selected financial markets in the region was primarily to help investors to devise a viable investment strategy.
Milošević-Avdalović Snežana   +1 more
doaj  

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