Results 81 to 90 of about 30,856 (228)

A REVIEW ON THE RELATIONSHIPS AMONG ADAPTIVE MARKETS HYPOTHESIS, THE EFFICIENT MARKETS HYPOTHESIS AND BEHAVIOURAL FINANCE [PDF]

Buletin ştiinţific: Universitatea din Piteşti. Seria Ştiinţe Economice, 2023
The Efficient Markets Hypothesis (EMH), which has had a significant impact on the field of finance since its development, has triggered many subsequent researches and some of the researches have brought a critical view to the Hypothesis.
Kubra SARITEPECI, Ayhan KAPUSUZOGLU, Nildag Basak CEYLAN   +2 more
doaj  

A Test of Weak-Form Market Efficiency in Australian Bank Bill Futures Calendar Spreads [PDF]

This paper demonstrates how the presence of a lower interest rate expectations detected in short-term interest rate futures during the 1990’s allowed arbitrage profits when trading intra-commodity spread differentials on the Sydney Futures Exchange’s 90 ...
John Anderson
core  

Activity Dependent Branching Ratios in Stocks, Solar X-ray Flux, and the Bak-Tang-Wiesenfeld Sandpile Model

, 2009
We define an activity dependent branching ratio that allows comparison of different time series $X_{t}$. The branching ratio $b_x$ is defined as $b_x= E[\xi_x/x]$. The random variable $\xi_x$ is the value of the next signal given that the previous one is
Amer Shreim, Elliot Martin, Maya Paczuski, P. A. Samuelson, R. Lyons, S. F. LeRoy   +5 more
core   +1 more source

Bifurcate Regulation of Hematopoietic Homeostasis and Bone Osteogenesis by VHL‐HIF2α‐Controlled Adipocyte Function

Advanced Science, Volume 13, Issue 5, 27 January 2026.
The VHL‐HIF2α (VHL is Von Hippel‐Lindau) axis in adipocytes differentially regulates hematopoiesis and bone formation through stem cell factor (SCF) and chemerin, respectively. This hypoxia‐responsive pathway in adipocytes establishes a systemic signaling network with HSCs and MSCs to maintain tissue homeostasis, revealing a targetable axis for ...
Qian Li, Jia Li, Anshu Tang, Cong Li, Chao Zhang, Congcong Zhang, Yun‐Cai Liu   +6 more
wiley   +1 more source

Extramedullary haematopoiesis in patients with thalassemia: a cross-sectional description of its prevalence, clinical features and survival

Hematology, Transfusion and Cell Therapy
Introduction: Despite knowledge advances on extramedullary haematopoiesis (EMH) in thalassemic patients, the real picture remains an open issue. Objectives: To assess EMH prevalence in patients with thalassemia major (TM) and intermedia (TI), to describe
Eduardo Cerello Chapchap, Murilo Marques Almeida Silva, Ronaldo Hueb Baroni, Aderson da Silva Araujo, Reijane Alves de Assis, Sandra Regina Loggetto, Antonio Fabron Junior, Monica Pinheiro de Almeida Verissimo, Giorgio Roberto Baldanzi, Kleber Yotsumoto Fertrin, Fernando Tricta, Antonio Giulio Piga, Nelson Hamerschlak   +12 more
doaj   +1 more source

Does It Pay to Be Informed? Expenditure Efficiency in the US Mutual Fund Industry

, 2011
The mutual fund industry would like us to believe that fund expenses are justifiable by their extensive management expertise, security analysis and the consequent delivery of returns that exceed the market performance.
Cerny, Jan
core  

Fractal Markets Hypothesis and the Global Financial Crisis: Scaling, Investment Horizons and Liquidity

, 2012
We investigate whether fractal markets hypothesis and its focus on liquidity and invest- ment horizons give reasonable predictions about dynamics of the financial markets during the turbulences such as the Global Financial Crisis of late 2000s.
Calvet L., Corazza M., Czarnecki L., Elton E., Grech D., Grech D., Kristoufek L., LeRoy S., Malkiel B., Onali E., Peters E., Peters E., Samuelson P.   +12 more
core   +1 more source

Ocean Wave Energy Generators and Self‐Powered Wave Sensors Based on Triboelectric Nanogenerators

Advanced Energy and Sustainability Research, Volume 7, Issue 1, January 2026.
The key milestones of ocean wave energy‐driven triboelectric nanogenerators (TENGs) from 2015 to 2024. The development of ocean wave energy‐driven TENGs has undergone multiple stages of evolution, particularly in the design of their outer structures, with the goal of more efficiently utilizing ocean wave motion.
Yunzhong Wang, Youhong Tang
wiley   +1 more source

Polarization-Free Generators and the S-Matrix

, 2000
Polarization-free generators, i.e. ``interacting'' Heisenberg operators which are localized in wedge-shaped regions of Minkowski space and generate single particle states from the vacuum, are a novel tool in the analysis and synthesis of two-dimensional ...
Borchers, Hans-Juergen, Buchholz, Detlev, Schroer, Bert   +2 more
core   +1 more source

New procedures for testing whether stock price processes are martingales

, 2009
We propose procedures for testing whether stock price processes are martingales based on limit order type betting strategies. We first show that the null hypothesis of martingale property of a stock price process can be tested based on the capital ...
A. Shmilovici, A. Timmermann, A. W. Lo, Akimichi Takemura, B. G. Malkiel, D. Revuz, G. Shafer, J. L. Kelly, J. Ville, J. Y. Cambell, K. Takeuchi, Kei Takeuchi, L. C. G. Rogers, L. E. Dubins, M. Kumon, M. Rubinstein, Masayuki Kumon, R. Giglio, S. F. LeRoy, T. M. Cover   +19 more
core   +3 more sources