Konstantinos Petridis

University of Macedonia

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Prasanta Kumar Dey

Aston University

Ali Emrouznejad

University of Surrey

Garyfallos Arabatzis

Democritus University of Thrace

Nikolaos E. Petridis

University of Macedonia

Vincent Charles

Pontifical Catholic University of Peru

Emmanouil Stiakakis

University of Macedonia

Evangelos Grigoroudis

Technical University of Crete

George Drogalas

University of Macedonia

Chrisovalantis Malesios

Agricultural University of Athens

Nikolaos Kiosses

University of Macedonia

Cooperative Institutions

University of Macedonia

Aston University

Addenbrooke's Hospital

University of Liverpool

University College London

University of Cambridge

Birmingham Children's Hospital

King's College Hospital

Aristotle University of Thessaloniki

Salford Royal Hospital

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Estimation of computer waste quantities using forecasting techniques

Journal of Cleaner Production (2015)

Nikolaos E. Petridis Emmanouil Stiakakis Konstantinos Petridis Prasanta Kumar Dey

Gompertz function

Exponential Smoothing

Sample (material)

10.1016/j.jclepro.2015.09.119

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Citations (65)

Critical Variables in the Implementation of a Risk-Based Internal Audit: A Theoretical and Empirical Investigation of Greek Companies

SSRN Electronic Journal (2020)

Petros Lois George Drogalas Karyofylis Doulgeridis Konstantinos Petridis

The role of an internal audit is of indisputable importance for every business. The emergence of many risks and the uncovering of financial scandals in recent years has led to increase of adoption of a risk-based internal audit (RBIA) by firms. This paper investigates the critical variables for the implementation of RBIA in Greek companies and examines the relationship between the above variables and RBIA implementation using data collected by 105 internal auditors, external auditors, directors and managers of Greek companies. The results of the regression analysis reveal that the quality of internal audit, the review concern, the risk management system and compliance with the international standards for the professional practice of internal auditing are positively related with statistical significance to the implementation of RBIA. Consequently, management should focus on these issues in order to apply RBIA. Our research also provides valuable insights into the impact of the economic crisis on firms and the country’s wider economic environment.

Information technology audit

Control environment

Business risks

Variables

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Valuation of the internal audit mechanisms in the decision support department of the local government organizations using mathematical programming

Annals of Operations Research (2020)

George Drogalas Konstantinos Petridis Nikolaos E. Petridis Eleni Zografidou

Variables

Control variable

10.1007/s10479-020-03537-4

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Citations (6)

Measuring Spatio-temporal Efficiency: An R Implementation for Time-Evolving Units

Computational Economics (2019)

Γεώργιος Δίγκας Konstantinos Petridis Alexander Chatzigeorgiou Emmanouil Stiakakis Ali Emrouznejad

Benchmarking

Benchmark (surveying)

Profiling (computer programming)

10.1007/s10614-019-09945-4

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Citations (1)

Introduction to GAMS

International series in management science/operations research/International series in operations research & management science (2023)

Ali Emrouznejad Konstantinos Petridis Vincent Charles

Statement (logic)

Mathematical software

10.1007/978-3-031-30701-0_1

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Citations (0)

Developing and Validating a Multi-Criteria Model to Evaluate Mobile Service Quality

Progress in IS (2013)

Emmanouil Stiakakis Konstantinos Petridis

10.1007/978-3-642-39747-9_39

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Citations (6)

Optimal design of multi-echelon supply chain networks under normally distributed demand

Annals of Operations Research (2013)

Konstantinos Petridis

Supply chain network

Linearization

Safety stock

Theory of computation

10.1007/s10479-013-1420-6

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Citations (42)

Analyzing M-Service Quality Dimensions Using Multivariate Statistical Techniques

Emmanouil Stiakakis Christos K. Georgiadis Konstantinos Petridis

This paper continues previous work of the authors concerning the identification and statistical analysis of the quality dimensions in mobile services (m-services). In this work, the structure of mservice quality into dimensions and criteria, which these dimensions are further analyzed into, is examined and grounded through an empirical analysis. The use of multivariate statistical techniques is decomposed into two stages: in the first stage, Factor Analysis in order to explore the relationship between the examined items (quality criteria) and the constructs (dimensions) proposed through the study of the relevant literature. In the second stage, Cluster Analysis and Principal Component Analysis are employed in order to explore intra-construct relationships. The contribution of this paper lies on the fact that a mix of multivariate statistical techniques is all integrated in a single framework, so that information about the structure of m-service quality criteria and constructs is obtained. The findings of the study confirm the theoretical background and provide valuable managerial insights.

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Citations (2)

A Conceptual Model for Biomass Supply Chain Sustainability

International Journal of Social Ecology and Sustainable Development (2018)

Konstantinos Petridis Evangelos Grigoroudis Garyfallos Arabatzis

One of the key elements of future energy generation is the switch to non-depletable resources, widely known as renewable energy sources (RES). There are many types of RES, however, but the focus of this article is on biomass products, which mainly consists of forest production (wood) and energy crops. One of the main problems of using biomass products for renewable energy production is the fact that several constraints should be imposed for both the management of forests and land. There are different aspects of optimal management of biomass products that guarantees the sustainability of the ecological systems. In this article, an analysis of the management for forest and agricultural products from energy crops is presented, demonstrating latest trends in biomass products as primal resource for renewable energy. Finally, a conceptual model for a biomass supply chain is proposed and discussed.

Renewable resource

10.4018/ijsesd.2018040104

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Citations (8)

Global e-waste trade network analysis

Resources Conservation and Recycling (2020)

Nikolaos E. Petridis Konstantinos Petridis Emmanouil Stiakakis

Clustering coefficient

Small-world network

10.1016/j.resconrec.2020.104742

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Citations (48)