Results 21 to 30 of about 10,838 (252)

Effective Portfolios – An Application of Multi-Criteria and Fuzzy Approach

open access: yesFolia Oeconomica Stetinensia, 2019
Research background: When selecting effective portfolios, the portfolio risk is minimized at the given expected return rate or the expected return rate is maximized with a given risk level.
Pośpiech Ewa
doaj   +1 more source

Optimizing the Resource Consumption of Blockchain Technology in Business Systems

open access: yesBusiness Systems Research, 2020
Blockchain technology has gained a great public interest due to the appearance of cryptocurrencies, a digital asset used for exchanging funds. Although blockchain calculations offer the benefits of security and reduced costs, blockchain is still strongly
Juričić Vedran   +2 more
doaj   +1 more source

Asset Allocation Strategies Using Covariance Matrix Estimators

open access: yesActa Universitatis Sapientiae: Economics and Business, 2022
The covariance matrix is an important element of many asset allocation strategies. The widely used sample covariance matrix estimator is unstable especially when the number of time observations is small and the number of assets is large or when high ...
László PáL
doaj   +1 more source

PISA Performance of Natives and Immigrants: Selection versus Efficiency

open access: yesOpen Education Studies, 2020
In most countries, immigrant and native students perform differently in the Programme for International Student Assessment (PISA) due to two main reasons: different immigration regimes and differences in their home-country educational systems.
Behr Andreas, Fugger Gerald
doaj   +1 more source

Proactive Planning of Project Team Members’ Competences

open access: yesFoundations of Management, 2020
Among the many factors that cause project delays or cancellations are disruptions, that is, unforeseen events occurring during the implementation of a project, which postpone or interrupt the performance of project activities.
Szwarc Eryk, Wikarek Jarosław
doaj   +1 more source

Classification of Mediterranean hedgerows: A methodological approximation [PDF]

open access: yes, 2021
The present paper addresses the methodology carried out to obtain a new classification of hedgerow networks in the Mediterranean region using GIS and Remote Sensing.
Gillian Gomez-Mediavilla   +7 more
core   +1 more source

Evaluation of the Effectiveness of Selected Slovak Brands on the Principle of DEA Models with the Possibility to Optimise them

open access: yesEconomics and Culture, 2018
Nowadays, when marketing and branding change, companies are trying to find new ways to evaluate the effectiveness of their marketing activities as they impact on current and future business results.
Moravcikova Dominika   +2 more
doaj   +1 more source

An Extended RFM Model for Customer Behaviour and Demographic Analysis in Retail Industry

open access: yesBusiness Systems Research, 2023
Customer segmentation has become one of the most innovative ways which help businesses adopt appropriate marketing campaigns and reach targeted customers. The RFM model and machine learning combination have been widely applied in various areas.
Ho Thanh   +5 more
doaj   +1 more source

High-Performance Hybrid Phenyl-C61-Butyric Acid Methyl Ester/Cd3P2 Nanowire Ultraviolet-Visible-Near Infrared Photodetectors

open access: yes, 2014
In this work, single-crystalline p-type Cd3P2 nanowires (NWs) were synthesized on a Cd sheet via a facile chemical vapor deposition method. Then field-effect transistors and high-performance photodetectors were fabricated based on these NWs. It was found
Shen, GZ   +32 more
core   +1 more source

Optimisation of Data Management System: Development of Requirements

open access: yesEconomics and Business, 2020
The paper deals with the management of product information in a cosmetics retail and information interaction of a retailer with distributors and manufacturers.
Zivitere Marga, Almar Nika
doaj   +1 more source

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