Results 51 to 60 of about 3,470,211 (401)

New procedures for testing whether stock price processes are martingales

open access: yes, 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   +19 more
core   +3 more sources

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

open access: yesFEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

The Relationship between the Managerial Overconfidence and Stock Price Crash Risk in Firms Listed in Tehran Stock Exchange [PDF]

open access: yesراهبرد مدیریت مالی, 2018
The purpose of this research is to investigate the relationship between managerial overconfidence and stock price crash risk because managers like to hide bad news and report only good news.
mahdi beshkooh, fatemeh keshavarz
doaj   +1 more source

Quantifying immediate price impact of trades based on the $k$-shell decomposition of stock trading networks

open access: yes, 2016
Traders in a stock market exchange stock shares and form a stock trading network. Trades at different positions of the stock trading network may contain different information.
Chen, Wei   +5 more
core   +1 more source

A Robust Predictive Model for Stock Price Prediction Using Deep Learning and Natural Language Processing [PDF]

open access: yesSocial Science Research Network, 2019
Prediction of future movement of stock prices has been a subject matter of many research work. There is a gamut of literature of technical analysis of stock prices where the objective is to identify patterns in stock price movements and derive profit ...
Sidra Mehtab, Jaydip Sen
semanticscholar   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

Research on stock price prediction from a data fusion perspective

open access: yesData Science in Finance and Economics, 2023
Due to external factors such as political influences, specific events and sentiment information, stock prices exhibit randomness, high volatility and non-linear characteristics, making accurate predictions of future stock prices based solely on ...
Aihua Li   +3 more
doaj   +1 more source

Enhancing Stock Movement Prediction with Adversarial Training

open access: yes, 2019
This paper contributes a new machine learning solution for stock movement prediction, which aims to predict whether the price of a stock will be up or down in the near future.
Chen, Huimin   +5 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

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