Institution
University of Piraeus
Education•Piraeus, Attiki, Greece•
About: University of Piraeus is a education organization based out in Piraeus, Attiki, Greece. It is known for research contribution in the topics: Context (language use) & Computer science. The organization has 1731 authors who have published 6209 publications receiving 106699 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors provide an overview of literature on epidemics control and logistics operations aiming at stimulating further interest in the area of epidemics controlling supply chain management, focusing on defining the role of logistics operations and their management.
243 citations
TL;DR: In this article, the authors examined artificial neural network (ANN) based models for day-ahead price forecasting, where the training data are clustered in homogenous groups and for each cluster, a dedicated forecaster is employed.
240 citations
TL;DR: In this paper, the authors proposed a heuristic to find an approximate solution for the problem of simultaneous berth and crane allocation at a multi-user container terminal, where the fitness value of a chromosome is obtained by crane transfer scheduling across berths.
Abstract: This paper addresses efficient berth and crane allocation scheduling at a multi-user container terminal. First, we introduce a formulation for the simultaneous berth and crane allocation problem. Next, by employing genetic algorithm we develop a heuristic to find an approximate solution for the problem. The fitness value of a chromosome is obtained by crane transfer scheduling across berths, which is determined by a maximum flow problem-based algorithm based on a berth allocation problem solution defined by the chromosome. The results of numerical experiments show that the proposed heuristic is applicable to solve this difficult but essential terminal operation problem.
239 citations
TL;DR: In this article, the authors investigated whether an investor is made better off by including commodities in a portfolio that consists of traditional asset classes, and they found that commodities are beneficial only to non-mean-variance investors.
Abstract: This paper investigates whether an investor is made better off by including commodities in a portfolio that consists of traditional asset classes. First, we revisit the posed question within an in-sample setting by employing mean–variance and non-mean–variance spanning tests. Then, we form optimal portfolios by taking into account the higher order moments of the portfolio returns distribution and evaluate their out-of-sample performance. Under the in-sample setting, we find that commodities are beneficial only to non-mean–variance investors. However, these benefits are not preserved out-of-sample. Our findings challenge the alleged diversification benefits of commodities and are robust across a number of performance evaluation measures, utility functions and datasets. The results hold even when transaction costs are considered and across various sub-periods. Not surprisingly, the only exception appears over the 2005–2008 unprecedented commodity boom period.
238 citations
TL;DR: In this article, the authors investigated the extent to which certain market and exporter characteristics affect the development of relationship quality in the context of importing distributors trading with exporting manufacturers of industrial products, finding that psychic distance is related negatively to relationship quality, while transaction-specific investments and role performance are associated positively with relationship quality.
236 citations
Authors
Showing all 1766 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Nicholas Apergis | 56 | 445 | 14876 |
| Natalia Andrienko | 52 | 253 | 11239 |
| Yannis Theodoridis | 47 | 223 | 9426 |
| Marianna Sigala | 44 | 218 | 7458 |
| George P. Patrinos | 43 | 353 | 8785 |
| Abbas Jamalipour | 43 | 518 | 11332 |
| Anastasios Tselepides | 40 | 78 | 4948 |
| Stefanos Gritzalis | 40 | 312 | 5425 |
| Stefan Schwarz | 37 | 209 | 4544 |
| Demetrios G. Sampson | 36 | 306 | 4886 |
| Christos Douligeris | 36 | 347 | 4835 |
| Alexander Artikis | 35 | 158 | 3217 |
| Michael H. Neumann | 34 | 105 | 3415 |
| Ilias Maglogiannis | 33 | 273 | 4810 |
| Gregoris Mentzas | 32 | 257 | 4293 |