The Greek Olive Oil Market Structure

Food product differentiation leads to significant price variations among the same products, meaning that specific products can be sold in higher prices. An Hedonic Price analysis is adopted to investigate the influence of food differentiation on consumer prices and to identify product attributes’ values for the olive oil market. This will con- tribute to device the most appropriate olive oil differentiation strategies in order to be purchased by consumers in a higher price. The retail price structure was estimated in relation to several product natural attributes, to production and processing conditions, to quality control and to labeling and distribution. Findings demonstrate that olive oil price differentiation is mainly influenced by factors relevant to quality of life, purchase uncertainty, acquisition cost and consumers’ psychological needs. Additionally, vertical integration in production and processing and the retailer size significantly influence the olive oil price formulationdifferentiation structure, hedonic prices, olive oil market, Crop Production/Industries, Marketing, Q13, C23, L15, M31,

Hedonic Analysis of Retail Egg Prices

The fast growth of product differentiation affects even the raw food product market and causes substantial price variations. The hedonic price technique is applied to examine raw-egg attributes because of a recent transformation from an undifferentiated to a highly differentiated market. The effects of product attributes, production methods, distribution, and product image on retail egg prices are considered. Results reveal that retail egg prices are influenced by specific product attributes including nutritional characteristics and unconventional production methods. Results provide knowledge useful in the development of marketing strategies and suggest areas for possible involvement of policymakers.Demand and Price Analysis,

Implementing a Static Cone Penetration Test in Infrastructure Works

In modern era, a construction of infrastructure projects necessitates a geotechnical investigation, which usually involves the execution of boreholes and laboratory testing on their samples as well as in-situ testing. A useful test, important for both educational and practical reasons, is the Cone Penetration Test (CPT), used to estimate the strength and compressibility of loose-to-medium dense coarse grained and soft to stiff fine-grained geomaterials, the excavation of which requires special attention. In this paper, a theoretical review on geotechnical surveys, in-situ testing of static cone penetrometer, statistical analysis of results, geotechnical correlations for the evaluation of results along with a dimensioning of the retaining wall with pile boards, is presented. The paper aims at highlighting the use of CPT for selecting the proper type of the temporary retaining structure, necessary to support excavations in loose-soft soils. The case study includes a pump room construction along with its aqueduct, close to Aliakmonas River in Greece. From this point of view, it may offer a rather powerful research design basis than purely experimental methods

Assessing the factorial structure of the internet addiction test in a sample of Greek adolescents

Although many studies have documented the psychometric properties of the Internet Addiction Test (IAT) in adults, its factorial structure has not adequately been investigated in adolescents. The aim of this study was to investigate the psychometric properties of the Internet Addiction Test, specifically testing its factorial structure in a sample of adolescents. A modified version of the Greek IAT, adapted for adolescents, was administered to 725 Greek secondary-school students. To determine the factorial structure underlying the questionnaire, both traditional and bifactor modelling approaches were applied to derive the optimal measurement structure of the IAT for adolescents. The bifactor model supported the single and three distinct factors, with stronger support for the unidimensionality of the instrument. The present study supports the stability of the three-factor structure of the Greek IAT from adolescence to adulthood, yet a longitudinal study is warranted to confirm this suggestion

Integrating collaborative web tools into educational environments: utilizing the TPACK model in designing a wiki-based teacher education program

In our digital world, ICT tools are frequently used in education in order to offer an added value to the educational process. The expectations for the benefits that can obtained from the use of ICT tools are high. However, many studies conclude that these expectations are not always met and this creates the need for further research. In this context, this thesis focuses on the Web-based technology of wikis and the factors that influence its constructive use in education. By studying the characteristics of the specific technology and connecting them with learning theories, theories of motivation, educational methods and techniques, conclusions are reached about the best way to utilize it.These observations are then used in the context of an ideal educational scenario of a teacher training program. A blended learning approach is employed in the program supported by a wiki tool. The design of the program is based on the TPACK framework. TPACK is used to define the knowledge that the teachers who will teach in the training program must have and its content, i.e., the knowledge that the teachers will obtain after the successful completion of the program. The main aspects of the program, the actions that must be implemented before, during and after its completion, the software tools that will be used and the ways of dealing with the problems mentioned in the relevant literature, are discussed and justified based on the conclusions of the previous sections of the thesis.Στη σύγχρονη εποχή συχνά αξιοποιούνται εργαλεία ΤΠΕ στην εκπαίδευση με σκοπό να προσφέρουν μια προστιθέμενη αξία στην εκπαιδευτική διαδικασία. Οι προσδοκίες για τα οφέλη που μπορούν να προκύψουν από την αξιοποίηση των ΤΠΕ είναι μεγάλες. Εντούτοις, πολλές έρευνες καταλήγουν στο συμπέρασμα ότι οι προσδοκίες αυτές δεν επαληθεύονται στον επιθυμητό βαθμό, γεγονός που αναδεικνύει την ανάγκη για περαιτέρω έρευνα. Λειτουργώντας στο πλαίσιο αυτό, η συγκεκριμένη διατριβή επιλέγει να ασχοληθεί με τη διαδικτυακή τεχνολογία των wikis και τους παράγοντες που επηρεάζουν την εποικοδομητική αξιοποίησή της στην εκπαίδευση. Μελετώντας τα χαρακτηριστικά της συγκεκριμένης τεχνολογίας και συνδέοντάς τα με θεωρίες μάθησης, θεωρίες κινήτρων, εκπαιδευτικές μεθόδους και τεχνικές καταλήγει σε συμπεράσματα για τον βέλτιστο τρόπο αξιοποίησής της.Οι παρατηρήσεις αυτές αξιοποιούνται στη συνέχεια στο πλαίσιο ενός ιδεατού εκπαιδευτικού σεμιναρίου επιμόρφωσης εκπαιδευτικών. Το πρόγραμμα επιμόρφωσης βασίζεται στη μικτή μέθοδο διδασκαλίας και χρησιμοποιεί wiki ως τεχνολογικό μέσο υποστήριξης της. Ο σχεδιασμός του προγράμματος βασίζεται πάνω στο πρότυπο TPACK, το οποίο καθορίζει τόσο τις γνώσεις που πρέπει να έχουν οι εκπαιδευτές που θα διδάξουν στο πρόγραμμα επιμόρφωσης, όσο και το περιεχόμενό του, δηλαδή τις γνώσεις που θα πρέπει να έχουν αποκομίσει οι εκπαιδευτικοί μετά την επιτυχή του ολοκλήρωση. Οι βασικές πτυχές του προγράμματος, οι ενέργειες που πρέπει να υλοποιηθούν πριν, κατά και μετά το πέρας του, τα λογισμικά που θα χρησιμοποιηθούν και οι τρόποι αντιμετώπισης των προβλημάτων που αναφέρονται στη σχετική βιβλιογραφία, συζητούνται και αιτιολογούνται με βάση τα συμπεράσματα των προηγούμενων ενοτήτων της διατριβής

The Greek Olive Oil Market Structure

Food product differentiation leads to significant price variations among the same products, meaning that specific products can be sold in higher prices. An Hedonic Price analysis is adopted to investigate the influence of food differentiation on consumer prices and to identify product attributes’ values for the olive oil market. This will con- tribute to device the most appropriate olive oil differentiation strategies in order to be purchased by consumers in a higher price. The retail price structure was estimated in relation to several product natural attributes, to production and processing conditions, to quality control and to labeling and distribution. Findings demonstrate that olive oil price differentiation is mainly influenced by factors relevant to quality of life, purchase uncertainty, acquisition cost and consumers’ psychological needs. Additionally, vertical integration in production and processing and the retailer size significantly influence the olive oil price formulatio

Hedonic Analysis of Retail Egg Prices

The fast growth of product differentiation affects even the raw food product market and causes substantial price variations. The hedonic price technique is applied to examine raw-egg attributes because of a recent transformation from an undifferentiated to a highly differentiated market. The effects of product attributes, production methods, distribution, and product image on retail egg prices are considered. Results reveal that retail egg prices are influenced by specific product attributes including nutritional characteristics and unconventional production methods. Results provide knowledge useful in the development of marketing strategies and suggest areas for possible involvement of policymakers