Results 81 to 90 of about 1,376,217 (363)
RM-CVaR: Regularized Multiple $\beta$-CVaR Portfolio
, 2020 The problem of finding the optimal portfolio for investors is called the portfolio optimization problem. Such problem mainly concerns the expectation and variability of return (i.e., mean and variance). Although the variance would be the most fundamental
Abe, Masaya, Nakagawa, Kei, Noma, Shuhei
core +1 more source
Advanced Energy Materials, EarlyView.This review explores using iron‐based single‐atom catalysts for sustainable electrochemical conversion of nitrogen and nitrate to ammonia production. The synthesis, characterization, efficiency, advancements, and future directions of Fe‐based single‐atom catalysts are discussed in detail.
Radhika Nittoor‐Veedu +2 more
wiley +1 more source
Do Zambian farmers manage climate risks?
Applied Economic Perspectives and Policy, EarlyView.Abstract This study investigates production responses to climate risk among farmers in Zambia by combining historical rainfall with nationally representative household data. After identifying the importance of January and February rainfall in maize production, we define these months' historical rainfall variations as the climate risk index.
Soyoka Okamura, Ken Miura, Chieko Umetsu
wiley +1 more source
Supercapacitors: An Emerging Energy Storage System
Advanced Energy and Sustainability Research, EarlyView.This review explores the principles, advancements, and material innovations in supercapacitor technology, covering pseudocapacitors, double‐layer capacitors, electrolytes, and nanostructured materials like carbon nanotubes, MXenes, and graphene. It examines hybrid systems bridging capacitors and batteries, promising applications in wearable devices ...
Muhammad Faisal Iqbal +7 more
wiley +1 more source
Journal of Functional Foods, 2021 Air pollution is estimated to cause 7 million annual deaths globally. Our aim was to determine if dietary propolis consumption could prevent the immune and functional damage in a mouse model of acute urban dust exposure.
Odette M. Shaw +4 more
doaj
Analysis of optimum informational support for sales channels during product launches
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2008 The aim of this article is to analyse efficiency of sales channels in the time when new products are being launched. As the most suitable method for this analysis was chosen the method of mystery shopping because it can properly compare and measure the ...
Michal Vodák
doaj +1 more source
Using Column Generation to Solve Extensions to the Markowitz Model
, 2019 We introduce a solution scheme for portfolio optimization problems with cardinality constraints. Typical portfolio optimization problems are extensions of the classical Markowitz mean-variance portfolio optimization model.
Roebers, Lorenz M. +2 more
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Supply chain risk in grain trading: Inventories as real options for shipping grain
Agribusiness, EarlyView.Abstract Integrating trading and logistics is an important challenge in commodity trading. Trading and logistics are strategic decisions and are integral to most commodities including grain shipping by rail, in addition to other modes (barges, ocean shipping). There are substantial risks, such as the ordering and placement of rail cars.
William W. Wilson, Jesse Klebe
wiley +1 more source
Blockchain technologies as enablers of supply chain mapping for sustainable supply chains
Business Strategy and the Environment, Volume 31, Issue 8, Page 3742-3756, December 2022., 2022 Abstract The advent of blockchain technologies is transmuting the way conventional supply chains are being managed. Due to the complexity of dealing with many actors involved in the supply chain networks, contemporary supply chains have limited visibility, transparency, and accountability.
Sharfuddin Ahmed Khan +5 more
wiley +1 more source