Results 51 to 60 of about 613 (140)

Portfolio Selection and Optimization in Romanian and Polish Stock Markets

open access: yesStudies in Business and Economics
This research aims to explore the selection and optimization of stocks from two Eastern European markets, Romania and Poland, starting from the maximum return criterion, downside risk, and Sortino ratio when building a portfolio.
Șerban Radu-Alexandru   +2 more
doaj   +1 more source

Presenting an Appropriate Pattern to Determine Attractive Companies for Investment (Case Study: Registered Companies in Tehran Stock Exchange and Active in Chemical Industries [PDF]

open access: yesتحقیقات مالی, 2015
The purpose of this study was proposing a suitable pattern for evaluating and assessing companies. To reach this important goal, the fuzzy Delphi method (FDM was employed.
Abbas Abbasi   +2 more
doaj   +1 more source

Flood forecast and inundation mapping using a combined hydrologic and hydraulic model on Muga River Abay Basin, Ethiopia

open access: yesRiver, Volume 5, Issue 1, Page 134-154, February 2026.
Abstract This study presents an integrated flood forecasting and inundation mapping framework using coupled SWAT, HEC‐HMS, and HEC‐RAS models for the Muga River basin in the Abay Basin, Ethiopia. The study addresses the limited application of integrated hydrologic–hydraulic modeling and the uncertainty associated with digital elevation model (DEM ...
Yikeber Ayenew Zeleke   +2 more
wiley   +1 more source

Experimental study on the high-damping properties of metallic lattice structures obtained from SLM

open access: yes, 2021
Modern additive manufacturing technologies allow the creation of parts characterized by complex geometries that cannot be created using conventional production techniques. Among them the Selective Laser Melting (SLM) technique is very promising. By using
Totis G.   +3 more
core   +1 more source

Hybrid Sentiment Analysis in Financial Markets: Multi-Stage LLM Integration for Market-Neutral Alpha Generation

open access: yesAI
This study addresses the challenge of high signal-to-noise ratios in financial sentiment analysis by introducing a hybrid, multi-stage AI framework.
Johannes Stübinger, Luis Wöhner
doaj   +1 more source

Toward a working definition of ketogenic diet resistance in GLUT1 deficiency syndrome

open access: yesEpileptic Disorders, Volume 27, Issue 6, Page 1247-1254, December 2025.
Abstract Objective The ketogenic diet (KD) is the standard treatment for glucose transporter type 1 deficiency syndrome (GLUT1‐DS), typically yielding seizure reduction and cognitive/motor gains. However, a small subset of patients shows limited or no clinical benefit.
Raffaele Falsaperla   +8 more
wiley   +1 more source

KINERJA PORTOFOLIO OPTIMAL PADA SAHAM BERBAGAI INDEKS DENGAN KALKULASI RASIO SORTINO, MODIGLIANI SQUARE, DAN ROY’S SAFETY FIRST [PDF]

open access: yes, 2018
The main purpose of this research is evaluating portfolio performance of variousindexes that comprises constituent index in Indonesia Stock Exchange. The performance of evaluation calculatesbasedon Sortino,Modigliani Square and Roy Safety First ratio ...
Wardani, Laila   +3 more
core   +1 more source

Alternative measures and decomposition of mutual funds portfolio performance [PDF]

open access: yesBankarstvo, 2018
In addition to the well-established and most commonly used portfolio performance measures, both in theory and practice - the Sharpe ratio, the Treynor ratio and the Jensen's or alpha index, the financial literature also includes other alternative ...
Leković Miljan
doaj  

Tunable BIC metamaterials with Dirac semimetals

open access: yesNanophotonics, Volume 14, Issue 27, Page 4875-4925, December 2025.
Abstract Proposed by von Neuman and Wigner in 1929, bound states in the continuum (BIC) exhibit the merits of ultrahigh Q–factor and strongly confined modes, solving the inherent high dissipation of metamaterials (MMs) and plasmonic devices. Dirac semimetal (DSM) possesses the advantages of high carrier mobility and outstanding tunable properties ...
Xiaoyong He, Wenhan Cao, Fangting Lin
wiley   +1 more source

Robust Analysis of Stability in Internal Turning

open access: yes, 2014
When machining high precision mechanical parts, self-excited chatter vibrations must be absolutely avoided since they cause unacceptable surface finish and dimensional errors.
SORTINO, Marco, TOTIS, Giovanni
core   +1 more source

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