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Impact analysis of environmental and urban planning factors on real estate values: comparative analysis of real estate values after urban planning and environmental regenerations through hedonic modeling
No full textThe thesis attempts to contribute to the analysis of the relationship between real estate values and urban and environmental factors. Firstly, the study of urban, environmental, economic and social factors that influence the desire or not to contribute to the conservation of an urban or environmental element in the study area was carried out using a WTP-WTA model based on hedonic models. Secondly, and after understanding the environmental and urban perspective of the citizens on the basis of the results of the first stage, the degree of influence of the urban and environmental urban factors on real estate values according to size, proximity, property features and other features is studied based on hedonic models. In this way, a comprehensive analysis is conducted on the way and magnitude of the effect of urban and environmental features on real estate values. In other words, the purpose of the present thesis is to analyze the benefits or negatives of urban and environmental interventions in relation to real estate values and to highlight the directives and goals that urban planning should follow.Η παρούσα διδακτορική διατριβή επιχειρεί να συμβάλλει στην ανάλυση της σχέσης της αξίας των ακινήτων με πολεοδομικούς και περιβαλλοντικούς παράγοντες. Σε πρώτο στάδιο, πραγματοποιήθηκε η μελέτη των πολεοδομικών, περιβαλλοντικών, οικονομικών και κοινωνικών παραγόντων που επηρεάζουν την επιθυμία ή μη συνεισφοράς στη διατήρηση ενός πολεοδομικού ή περιβαλλοντικού στοιχείου στη μελετώμενη περιοχή με τη βοήθεια ενός μοντέλου της μορφής WTP-WTA βασισμένο στη λογική των ευδαιμονικών μοντέλων. Σε δεύτερη στάδιο και αφού έγινε κατανοητή η περιβαλλοντική και πολεοδομική οπτική των πολιτών με βάση τα αποτελέσματα του πρώτου σταδίου, μελετάται με τη βοήθεια ενός ευδαιμονικού μοντέλου ο βαθμός επιρροής των πολεοδομικών και περιβαλλοντικών στοιχείων στις αξίες των ακινήτων ανάλογα με το μέγεθος, την εγγύτητα, την κατάσταση και άλλα επιμέρους χαρακτηριστικά. Με αυτόν τον τρόπο, παρουσιάζεται μια ολοκληρωμένη εικόνα για το πόσο και πως συγκεκριμένα πολεοδομικά και περιβαλλοντικά χαρακτηριστικά επιδρούν στις αξίες ακινήτων. Με άλλα λόγια, σκοπός της διδακτορικής διατριβής είναι η ανάλυση των ωφελειών ή αρνητικών επιρροών των πολεοδομικών και περιβαλλοντικών επεμβάσεων σε σχέση με τις αξίες ακινήτων και η ανάδειξη της κατεύθυνσης και των στόχων που πρέπει να ακολουθεί ο πολεοδομικός σχεδιασμός μέσα από την πρακτική απόδειξη της επιρροής των παρεμβάσεων αυτών στις γειτονικές χρήσεις
Viewing valuations from the sky: UAVs in the appraisal industry
Get PDFThe first reports of autonomous unmanned flight tools come from antiquity, while bibliography shows image capturing platforms from the late 19th century. Over the years, these platforms have altered leading to the present fully automated Unmanned Aerial Vehicle (UAV), which capture images of the Earth's surface and its objects. In this paper we will present the historical evolution of the use of image capturing systems’ platforms, their disadvantages, their advantages, and their applications and use in real estate valuations and appraisal studies.During the last years, UAVs have entered the appraisal industry massively. Unmanned aerial vehicles are typically being used to facilitate appraisers on the collection and documentation of the necessary data that need to be reported during the valuation process. The aim of this paper is to identify and report UAVs’ uses during the valuation process by documenting all their applications and useful products. In short, access to hard-to-reach places, such as rooflines and plots of sharp terrain, has been the first and yet one of the most important uses of drones during valuations. Especially in cases of litigation, the detailed description of a property is more than necessary. In addition to other uses, UAVs generally allow appraisers to conduct their jobs more frequently, efficiently, and effectively. It is crucial, however, to adhere and apply all safety targeting regulatory changes if the industry wants to continue using such systems during valuations
The Greek Housing Issue: Housing and Price Indicators VS Macroeconomic Indicators
Get PDFIn Greece, housing has always been an important indicator of the economy as homeownership rates remained over 75% for many years. Construction activity increased by 11% during 1991-2000, which in combination with easy and generous loans by banks, increased demand and property values significantly. In the aftermath of the financial crisis, property values remained unjustifiably at high levels for the first 2-3 years into the recession. This stability was followed by a sharp decrease in values reaching a 15-year low. This fact is documented through macroeconomic and housing indices, such as GDP, labour, building permits, house price and money indices. This paper aims at shedding some light on the existing relationship between housing activity and macroeconomic factors. To this objective, building permits, house price, CPI housing and home ownership indexes spanning from the beginning of the recession in 2008 up to date were gathered and analyzed. The results show an interesting intercorrelation between building permits and certain macroeconomic indicators, whilst all other housing indices appear with different behavior towards each macroeconomic factor during the period of study
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Properties, Economy and Values: Exploring the Effects of Economic Crisis to Real Estate Values In Greece
No full textEconomic crisis has affected many countries, among which is Greece, creating strong interactions between the main economic factors and other once very vivid sectors. For many years, the real estate sector has been the most active economic sector in Greece as the concept of the best investment choice was the acquisition of a residential property. Moreover, as far as commercial properties are concerned, their rents were high enough to provide a satisfactory income to their owner.This paper investigates which economic factors did actually affect the real estate sector, the decrease of the prices and the inactiveness of the sector all over Greece. The population, the unemployment, the employment, the mean objective tax values, the initial construction cost of properties, the initial construction cost of shops, how many new properties and how many new shops exist are the variables that were entered in the hedonic model for the investigation of their influence on the decrease of the values.The results indicate that the economic crisis affected the real estate sector in many different ways apart from the expected. Unemployment, employment and population are the least influential ones, when the other factors influence the values in many different ways with many different explanations
“Sharing” the Mykonian summer: The case of AirBnB
Get PDFThe aim of this paper is to illustrate an overview of the current AirBnB market in the Greek island of Mykonos and its place within the entire hospitality real estate market of the island. Global economy has changed its form and functions several times during the years. Sharing economy or collaborative consumption is a new way of economic activity, which basically refers to goods and services sharing. The change from owning to sharing, the wide use of online social networks and electronic markets and the expansion of mobile devices and electronic services have all contributed to the augmentation of sharing economy. The impact of sharing economy on real estate began on 2008, when AirBnB was founded in San Francisco. Nowadays, sharing economy in real estate is very popular not only in USA but internationally too and AirBnB has become one of the most famous short-term lease platforms. Mykonos which is one of the most touristic and popular Greek islands enjoys its own economy. Despite the economic crisis, Mykonos has not been affected in terms of real estate values, hotel room values and holiday expenses. In such an economy, AirBnB has found its place all over the island. This paper aims at mapping the AirBnB phenomenon in Mykonos through the use of GIS, proving that sharing economy is not just targeting markets of lower income or budget and highlighting any geographical patterns in the location of AirBnB properties. Moreover, an analysis on the factors that affect the rental value/day provides an additional insight. It is clearly proven that AirBnB covers any additional need for tourist accommodation successfully even in the high demanding market of Mykonos with over 300 sharing residential facilities, which are described as a shared space, a private room or even an entire house. The paper provides interesting results on the location of each sharing property, the site and property attributes, amenities and services and rental rules, which are all investigated in order to present the Mykonian AirBnB
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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