813 research outputs found
Babel, or the local distortion of the Greek language
No full textTitle: Βαβυλωνία ἤ ἡ κατά τόπους διαφθορά τῆς ἑλληνικῆς γλώσσας. Κωµωδία (Babel, or the local distortion of the Greek language: A comedy) Originally published: Ναύπλιο (Nafplio), Τυπογραφεῖsο Κωνσταντίνου Τόµπρα ἐκ Κυδωνιῶν καὶ Κωνσταντίνου Ἰωαννίδη ἐκ Σµύρνης, 1836 Language: Greek The excerpt used is from D. C. Vyzantios, Βαβυλωνία, introduction by Spyros Evangelatos (Athens: Εστία, 1993), pp.1–3. About the author Dimitrios Vyzantios (pseudonym of Dimitrios K. Hatziaslanis) [1790, Constantin..
Talent development: a driver for strategic flexibility, innovativeness and financial performance
No full textPurpose: The purpose of this study is to build a theory presenting talent development as a driver for innovativeness and strategic flexibility, and how these organizational capabilities affect financial performance. Design/methodology/approach: As a methodological approach, this study uses a rich combination of literature review and exploratory interviews with managers and academicians. Moreover, a conceptual framework is tested by confirmatory factor analysis and finally structural equation modelling using the survey data from 462 Greek firms. Findings: The results show the positive effect of talent development on strategic flexibility and innovativeness. Moreover, strategic flexibility is an influential firm capability for innovativeness and financial performance. This study also reveals the significance of innovativeness on financial performance. Research limitations/implications: This study explores talent development and two certain organizational capabilities, but many other topics that affect business performance remain unexplored. The role of environmental characteristics could also be examined as a moderator in the proposed relationships. Practical implications: This study offers clear implications for managers, proving that talent development is a major driving force behind strategic flexibility, innovativeness and financial performance in order for managers to allocate resources, and to develop and execute these capabilities as an integral part of business strategy. Originality/value: This empirical study contributes to the literature by developing a research conceptual framework of three underdeveloped firm capabilities, investigating and explaining both their correlations and dynamic nature and their role in financial performance improvement.18229631
Dimitrios Tsamis Karatasos : a symbol of Greek, Serbian and Bulgarian friendship
No full textTwo Serbian texts extol the contribution of Dimitrios Tsamis Karatasos to the Balkan joint effort to throw off the Ottoman yoke. These texts are analysed by the author within the historical framework of their period, so that the man’s personality and work may be accurately evaluated from a fresh viewpoint. More specifically, the author conducts a research on the tombstone of Dimitrios Tsamis Karatasos, which he discovered himself at Naoussa, and the octet engraved on it, which is also published here. The work is illustrated by seven plates, of which four have not been published previously
Environmental dynamism and sustainability: the mediating role of innovation, strategic flexibility and HR development
No full textPurpose: The purpose of this paper is to examine whether environmental dynamism can drive firms to adopt sustainability, taking into consideration the mediating role of the innovation process, strategic flexibility and human resource development in this relationship. Design/methodology/approach: The proposed framework is tested by confirmatory factor analysis and finally structural equation modeling (SEM) using the survey data from 513 Greek firms. Findings: The results show that environmental dynamism drives firms to sustainability, but the introduction of innovation process, strategic flexibility and human resource development fully mediate the effect of this relationship. Research limitations/implications: This study explores three organizational factors. In future research it would be very interesting to explore other topics that affect sustainability. Moreover, it might be useful for researchers to examine firms' digital capability and ambidextrous sustainability. Practical implications: This study offers clear implications for managers, proving that innovation process, strategic flexibility and human resource development are critical factors in achieving sustainability. Originality/value: This empirical study determines the contribution of environmental dynamism to sustainability taking into consideration the role of three critical organizational factors as mediators in this relationship.6161697171
Understanding BMI from Industry 4.0, knowledge management and market uncertainty perspective
No full textPurpose: The main purpose of this study is to investigate the role of Industry 4.0 capability (I4.0 C) in creating a supportive environment for business model innovation by focussing on the mediating role of knowledge management capability (KMC) and the moderating effect of market uncertainty. Design/methodology/approach: This paper uses interviews with managers and academics. Data were collected from 379 managers; CFA and finally regression analysis were performed, and the program “PROCESS” software was used to validate the data and examine the hypothesized relationships. Findings: KMC mediates the relationship between Industry 4.0 capability and business model innovation. The effect of Industry 4.0 capability on KMC is stronger for firms with increased market uncertainty. In contrast, the impact of KMC on business model innovation is weaker for firms operating in highly-uncertain markets. Research limitations/implications: Data were collected at only one point in time from one country, Greece. This might pose limitations on the generalizability of our results. Future research should test the relationships examined in this study in other international contexts. Practical implications: Managers should invest in more advanced technology in order to obtain knowledge and capability. In addition, they need to pay more attention to how their firms' knowledge derived from Industry 4.0 contributes to business model innovation. Originality/value: The current state of knowledge of both theory and practise for critical organizational factors such as Industry 4.0 capability, KMC, business model innovation and market uncertainty will be extended.2951522154
Performance management of SMEs: a systematic literature review for antecedents and moderators
No full textPurposeThe purpose of this study is to gain insight into existing empirical studies on performance management of small and medium-sized enterprises (SMEs). It categorizes the main antecedents for SMEs’ performance, the dimensions of SMEs’ performance and all variables used as moderators in the conceptual relationships.Design/methodology/approachThis study undertakes a systematic literature review of 58 articles published in 33 peer-reviewed academic journals from 2000 to 2020 followed by a synthesis of individual studies to analyze the trends and background of research into SMEs.FindingsA new academic conceptual model was developed grounded in selected theoretical lenses to advance our understanding of the different categories of antecedents, moderators and SMEs’ performance dimensions.Research limitations/implicationsThe author has provided a future research agenda in the context of SMEs. Future studies may investigate the role of different categories of determinants, the influence of key cultural values, the digital capability in SMEs and the Internet in the internationalization of SMEs.Practical implicationsThis paper offers a framework for both practitioners and scholars in thinking about those factors that may be critical for success in SMEs.Originality/valueThis is a systematic review that suggests a new conceptual model of what existing empirical studies have found on SMEs. It can be used to influence thinking and research design in the area of SMEs’ performance and success.71128931
The Remains of authoritarianism : bureaucracy and civil society in post-authoritarian Greece
No full textDimitrios A. Sotiropoulos. 30 cm. He presented this paper at a seminar held at the Center on October 21, 1994. - T.p. Includes bibliographical references (p. 31-35
Erratum: Korkovelos, A., et al. The role of open access data in geospatial electrification planning and the achievement of SDG7. An OnSSET-based case study for Malawi. <i>Energies</i> 2019, 12(7), 1395
No full textThe authors wish to make a change in author names (adding new author—Dimitrios Mentis) to this paper
Expression networks for cancer gene markers
No full textΜια εργασία που υποβλήθηκε για τη κάλυψη των αναγκών απόκτησης της Διπλώματος στη σχολή ΗΜΜΥΠερίληψη: Τα κύτταρα περιέχουν χιλιάδες βιολογικά μόρια, όπως γονίδια, RNA, πρωτεΐνες και μεταβολίτες, που αλληλεπιδρούν με πολύπλοκους τρόπους. Τα δίκτυα παρουσιάζουν ένα ισχυρό πλαίσιο για να αντιπροσωπεύσουν αυτές τις περίπλοκες σχέσεις και αλληλεπιδράσεις, οι οποίες είναι υπεύθυνες για διάϕορες κυτταρικές λειτουργίες με τις επιδράσεις των μεμονωμένων κόμβων των μορίων. Στην παρούσα διπλωματική εργασία πραγματοποιείται η εκμάθηση δομής Bayesian δικτύων από δεδομένα γονιδιακής έκϕρασης που προέρχονται από δείγματα παθολογίας του καρκίνου του μαστού. Τα Bayesian δίκτυα παρέχουν μια καλή και εύχρηστη αναπαράσταση για την έκϕραση της από κοινού κατανομής πιθανότητας και για τον συμπερασμό. Η αναπαράσταση και η χρήση της θεωρίας πιθανοτήτων κάνουν τα Bayesian δίκτυα κατάλληλα για το
συνδυασμό του πεδίου γνώσης και δεδομένων, την έκϕραση αιτιωδών σχέσεων, την αποϕυγή υπερκάλυψης ενός μοντέλου σε δεδομένα εκπαίδευσης, και την εκμάθηση από μη ολοκληρωμένα σύνολα δεδομένων. Συγκεκριμένα, για να γίνει η εκμάθηση μιας τέτοιας δομής, χρησιμοποιήθηκαν οι αλληλεπιδράσεις των 77 γονιδίων που είναι μια γονιδιακή υπογραϕή που σχετίζεται με την παθολογία του καρκίνου του μαστού. Κατασκευάστηκαν δομές ξεχωριστά για τα καρκινικά και τα υγιή δείγματα ενώ η εκμάθηση των δομών έγινε σύμϕωνα με τον αλγόριθμο εκμάθησης δομής Κ2, θεωρώντας τις μεταβλητές διακριτές αλλά και συνεχείς. Οι δομές που προέκυψαν μελετήθηκαν ως προς τις ιδιότητες Μικρού Κόσμου και Ελεύθερης Κλίμακας, που εμϕανίζονται στην πλειονότητα των δικτύων του πραγματικού κόσμου. Επίσης αναζητήθηκαν σημαντικοί κόμβοι, συμπλέγματα (σύμϕωνα με τον αλγόριθμο MCODE) και δομικές ενότητες (σύμϕωνα με τον αλγόριθμο jActiveModules) στις δομές, τα οποία αξιολογήθηκαν στατιστικά και βιολογικά. Η στατιστική ανάλυση των δικτύων
έδειξε ότι εμϕανίζουν την ιδιότητα Ελεύθερης Κλίμακας που συνάδει με τη βιολογική τους διάσταση όπως επίσης και ότι υπάρχουν σημαντικοί κόμβοι, συμπλέγματα και δομικές ενότητες στα δίκτυα. Η ανάλυση των Bayesian δικτύων ανέδειξε δυναμικά υποδίκτυα με κεντρικούς κόμβους τα οποία προσϕέρουν νέα γνώση σχετικά με τα βιολογικά μονοπάτια που εμπλέκονται στον καρκίνο του μαστού.Summarization: Cells contain thousands of organic molecules, such as genes, RNA, proteins and
metabolites which interact in complex ways. The networks provide a powerful
framework to represent these complex relationships and interactions, which are
responsible for various cellular functions with the effects of individual nodes of the molecules. In this thesis is curried out the learning of Bayesian network structure from gene expression data from breast cancer pathology samples. The Bayesian networks provide a neat and compact representation for expressing joint probability distribution and for inference. The representation and the use of probability theory makes Bayesian networks suitable for combining domain knowledge and data, expressing causal relationships, avoiding overfitting a model to training data, and learning from incomplete datasets. Specifically, to learn such a structure, have been used interactions of 77 genes, which is a gene signature associated with the pathology of breast cancer. Structures were constructed separately for both cancer and control samples, while learning structures were made according to the structure learning algorithm K2, considering the discrete and continuous variables. The resulting structures studied in properties of Small-World and Scale-Free, shown in most real world networks. Furthermore, important nodes as well as complexes (according to the algorithm MCODE) and modules (according to the algorithm jActive Modules) were searched out in the structures which were statistically and biologically evaluated. Statistical analysis showed that the networks have the property of Scale-Free, which is consistent with their biological dimension and that there are important hubs, clusters and modules in the networks. The Bayesian networks analysis dynamically highlighted subnetworks with central hubs which offer new knowledge of the biological pathways involved in cancer breast
Ambidextrous leadership: a narrative literature review for theory development and directions for future research
No full textPurposeThis study seeks to provide a narrative literature review of existing empirical research, in order to better understand the processes and theory of ambidextrous leadership, as well as its influence on followers, employees and organizations.Design/methodology/approachData from 26 studies were extracted and synthesied providing a critical discussion about the methodological and theoretical aspects of the studies identified in the review.FindingsIt was revealed the attributes for an effective ambidextrous leader, it was presented the recently proposed concept of ambidextrous leadership theory and it was noticed the main criticisms against the findings of the extant ambidextrous leadership literature. It was also identified many research gaps in the literature which in turn can guide academics in the development of ambidextrous leadership.Research limitations/implicationsThe ambidextrous leadership theory represents a novel and unique approach to the domain of leadership for creativity and innovation. It is shared across hierarchical levels throughout the organization. Leaders have a significant effect on employees' behaviors and should determine its applicability to different situations. Organizations require ambidextrous managers who combine flexible, situational and versatile leadership styles developing ever increasingly new and divergent ideas. Many research gaps in the literature were also identified that can guide academics in the development of ambidextrous leadership.Practical implicationsUnderstanding that ambidextrous leadership is required to significantly influence ambidexterity and innovation allows organizations to direct their leadership selection and development.Originality/valueThis review contributes to the ambidextrous leadership literature by creating a holistic picture of where it has been and where it should go.17220623
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