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The purpose of the article is to improve the understanding of the role of institutional factors in real estate development. The authors take into account zoning (existence and type), type of right of disposal and type of buyer and seller of property in a multivariate econometric estimation. Dependent variable of the analysis is the time between acquisition of empty land and the application for a building permit, a period when many important development decisions have to be made. This indicator is closely related to debated phenomena like land hording and speculation.

The authors estimate a Cox proportional hazard model with the time between acquisition and application for a building permit as dependent variable and institutional indicators and a number of control variables as explanatory variables. Study area is the GZM Metropolis in the South of Poland. This region shows enough variability in institutional arrangements to allow for this type of analysis.

The analysis shows that institutional factors significantly influence the real estate development process. In areas that have not issued a zoning plan, the period until the building permit application is significantly longer. When the state is involved in a transaction (as purchaser or seller), it also takes longer until the building permit application is submitted. Although the instrument is usually intended to speed up development, perpetual usufruct implies a longer period until building permit application. Because of the results the authors get for control variables and for robustness checks, the authors are confident of the results of the analysis.

To the authors’ knowledge, this is the first study that deals with the question how institutional factors influence the timing of real estate development. By using data for a region in Poland, the authors also add to knowledge about real estate development in CEE countries.

Technostress and information overload are serious challenges of the information age. An alarming number of people exhibit dangerously intensive media consumption, while Internet and mobile phone addictions are a widespread phenomenon. At the same time, new media overexposure among young people is understudied, even more so when social network sites are concerned.

This study explores how feelings of overexposure and stress relate to the self-expressive needs of teenagers. It presents and discusses the results of a large-scale survey conducted during an exhibition on media overload in Switzerland. A total of 6,989 adolescents provided answers on their media overload and stress. Descriptive statistics and logistic regression were used to quantify the influence of demographic characteristics on social network site related stress.

While only a minority of 13 percent of respondents feels stressed by social network sites, more than one third has the feeling of spending too much time on such platforms. Age, gender, and language background (French vs. German speaking) shape the overload propensity, with older, male and French-speaking teenagers most at risk for social network site stress.

The study proposes that social divides exist in teenagers’ ability to cope with a specific affordance of social network sites, namely their constant status updates and potential of overexposure. Furthermore, it reflects upon the relation between identity performance and stress.

The chapter is one of the first to investigate social network site overload with a broad sample approach, quantifying antecedents of the phenomenon.

This study aims to examine the impact of relative importance of local characteristics, distance from the city centre and unobservable spatial relation in explaining values of constant‐quality apartment units in Vienna.

Drawing on recent developments in spatial econometrics and spatial hedonic house price modelling, the rent gradient hypothesis is examined by means of hedonic regression and spatial hedonic regression. Spatial autocorrelation tests are applied in order to assess possible presence of spatial dependence. The authors borrow Florax et al.'s specification search strategy in order to choose the most appropriate spatial model specification.

This research shows that local characteristics – or particularities – proxied by district and distance from the city centre are important location variables with regard to the Viennese apartment market. The spatial analysis suggests that the apartment prices are spatially autocorrelated and the Viennese apartment market has a distance‐based neighbourhood structure. The main finding is, however, that residents are willing to bid more for constant‐quality apartment units that are close to the centre of the city.

Rent gradient hypothesis is usually tested within non‐spatial hedonic frameworks: this study estimates a spatial hedonic model additionally in order to allow for comparison of results. This is also the first article to apply recent developments in spatial econometrics to examine explicitly rent gradient theory in the context of the Viennese apartment market.

Various types of damage or cracking in the structural components of an airframe can occur during the service lifetimes of aging aircraft. These types of damage are commonly repaired with a patch that can be joined to the original structure by different techniques, e.g., riveting and bonding. The purpose of this paper is to describe the repair of a fatigue crack in the metallic wing structure of a jet trainer aircraft using an adhesively bonded boron composite patch.

The partial analytical design and numerical analysis of the repair is presented. Three different versions of the patch are quantitatively investigated. The efficiency of the designed adhesively bonded boron patch with the parent metallic structure is experimentally verified by panel tests, and two different patch geometries and two surface preparation techniques are investigated. The panels were designed, manufactured and tested as representative structures of the repaired structure.

Adhesively bonded composite repair increases the lifetime by at least one order compared with the non-repaired structure. Both surface preparations provide equivalent results. The repair lifetime is significantly influenced by the patch geometry, and the longer patch significantly increases the lifetime of the panel. The lifetime of the structure can be increased by ˜40-fold if the patch geometry is a rectangle with 1:1.5 proportions of the sides (length in the crack direction/length perpendicular to the crack propagation). The patch length in the crack direction should be twice that of the initial crack length. Additional patch length extension in the direction that is perpendicular to the crack propagation does not appear to be effective for significantly decreasing the stress intensity factor and patch efficiency. The repair also retards the crack propagation if the crack grows out of the patch. No significant disbonding was detected.

The work described in this paper provides information that is very useful for patch design and verification with relation to different patch geometries and technologies. The designed and verified repair has been successfully applied to an L-39 Czech aircraft structure.

This paper comprehensively addresses the influence of chopped strand mat glass fiber-reinforced polymer (GFRP) patch configurations such as geometry, dimensions, position and the number of layers of patches, whether a single or double patch is used and how well debonding the area under the patch improves the strength of the cracked aluminum plates with different crack lengths.

Single-edge cracked aluminum specimens of 150 mm in length and 50 mm in width were tested using the tensile test. The cracked aluminum specimens were then repaired using GFRP patches with various configurations. A three-dimensional (3D) finite element method (FEM) was adopted to simulate the repaired cracked aluminum plates using composite patches to obtain the stress intensity factor (SIF). The numerical modeling and validation of ABAQUS software and the contour integral method for SIF calculations provide a valuable tool for further investigation and design optimization.

The width of the GFRP patches affected the efficiency of the rehabilitated cracked aluminum plate. Increasing patch width WP from 5 mm to 15 mm increases the peak load by 9.7 and 17.5%, respectively, if compared with the specimen without the patch. The efficiency of the GFRP patch in reducing the SIF increased as the number of layers increased, i.e. the maximum load was enhanced by 5%.

This study assessed repairing metallic structures using the chopped strand mat GFRP. Furthermore, it demonstrated the superiority of rectangular patches over semicircular ones, along with the benefit of using double patches for out-of-plane bending prevention and it emphasizes the detrimental effect of defects in the bonding area between the patch and the cracked component. This underlines the importance of proper surface preparation and bonding techniques for successful repair.

The purpose of this paper is to assess the demand and to estimate the willingness to pay for sustainable (certified) office space in Poland.

Due to limited data on sustainable property performance in Poland, the research is based on stated-preference data. The main research tool is conjoint experiment, run on a sample of office tenants in Krakow.

Highest utility for office tenants in Poland is linked to BREEAM certificate (highest willingness to pay for having BREEAM certified office space. Slightly lower propensity to pay was observed for LEED certificate. The lowest willingness to pay was estimated for DGNB certificate. One of possible explanations is connected to tenants awareness (BREEAM is the most common certificate in Poland).

The research results suggest increasing demand for sustainable office space in Poland, reflected by willingness to pay for sustainable office space. The main limitations of the research are twofold: geographical limitation (only one city) and hypothetical nature of choices made by tenants in the quasi-experiment.

The results of the research can justify the engagement of investors in sustainable property development in Poland and foster the development of this respective sector.

The paper is unique as it explores the potential for sustainable property development in emerging economies, which is not a common area of scientific interest mainly due to data availability. Traditionally most research focusses on mature markets in North America, and Western Europe, and empirical evidence from less developed markets is scarce. Few papers (if any) use quasi-experimental setting to elicit implicit price of ecological certificates.

This paper aims to discuss and present the regional-innovation cluster policy for R&D efficiency and the creative economy. In particular, the R&D efficiency and creative economy of Daedeok Innopolis are discussed for the science and technology policy of the R&D regional-innovation cluster. In this research, the region cluster policy change, the creative innovation system construction, the manpower system construction and the support unification for R&D and commercialization are presented as policy proposals for R&D efficiency and the creative economy.

In this research, the universities, research institutes and enterprises of Daedeok Innopolis were studied. Thirty people from the universities in the area, 30 from the research institutes and 30 from the enterprises were surveyed through the quota sampling of the non-probability sampling method for this research. These survey respondents were science and technology policy specialists for the R&D, industrialization and entrepreneurial activities of Daedeok Innopolis. The methodological material is a questionnaire. The study’s investigation factors were the government’s role, knowledge creation and the network. Also, F-test, ANOVA and chi-square independence test were utilized for the survey data analysis.

Regional-innovation cluster construction is a representative method of realizing regional development and competition enhancement. This research was found through the analysis that the government policy is very useful for innovation ecosystem development. The knowledge capability has been enhanced in connection with knowledge creation. Also, the network has been vitalized. New-dimension industry–university–institute collaboration and a human resource management system are needed for R&D efficiency and the creative economy. Daedeok Innopolis needs consistent support for industrialization and foundation.

Movement of and cooperation among humans, goods, knowledge, technologies, etc., occur in many areas (science, the economy, culture, arts, etc.) because of the compression of time and space through informatization and globalization. This has brought about changes in cross-border, regional and national relations and has stimulated competition in the aforementioned areas. To date, a state-dominated system has been operated to deal with these changes, but it has been shown to be inefficient because it cannot reflect the conditions in the region and does not allow quick reaction. The advantages of the region must be identified and utilized to boost the survival and development of the region. Regional-innovation cluster construction is a representative method of realizing regional development and competition enhancement.

The innovative feature of the study is proposed the science and technology policy (the region cluster policy change, the creative innovation system construction, the manpower system construction and the support unification for R&D and commercialization) for the R&D regional-innovation cluster through the survey data analysis. In this paper, the R&D efficiency and the creative economy of Daedeok Innopolis are discussed for the science and technology policy of the R&D regional-innovation cluster. The science and technology policy for the R&D regional-innovation cluster development is examined for the first time in this paper. This research is expected to make a significant contribution to the establishment of a development strategy for the regional-innovation cluster, and to the decision-making regarding the science and technology policy.

Within the last two decades, entrepreneurship education has become institutionalized in Germany. It is offered as a stand-alone program or as part of a business degree, combining academic knowledge, practical skills, and personal development to enhance the entrepreneurial success of university graduates. While entrepreneurship education has experienced similar growth worldwide, its emergence in Germany is closely tied to the country’s political and economic developments. The significance of entrepreneurship education for a thriving entrepreneurial ecosystem and contemporary economic policy has been instrumental in advancing its academic recognition. This chapter provides a historical analysis of the academization of entrepreneurship in Germany. It explores the recursive and often idiosyncratic processes involving state and financial institutions, companies, and universities that have created, respecified, and mutually reinforced a subdiscipline and field of study. Academic entrepreneurship knowledge successively not only became relevant for starting a business but also for employment within the entrepreneurial infrastructure and beyond. This chapter follows a chronological order, highlighting three key stages in the academization of entrepreneurship education. First, the academic, financial, and political roots (I) of entrepreneurship up until the 1970s. Second, it explores the transformation (II) of entrepreneurship into a viable policy alternative and the challenges faced in establishing complementary research and education in higher education institutions during the 1980s. Finally, it sketches the institutionalization (III) of entrepreneurship as a central driver of government economic policy, allowing for the late bloom of entrepreneurship education and research at universities around the turn of the millennium.