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Collective memory is not a monolithic body of knowledge and ideas; at times it splinters, shifts to parallel modes of existence, and is sometimes disrupted. Disruptions in collective memory create social tension, which is either overcome through special procedures of commemorative "reset," or else pushed into a voiceless space. The phenomenological approach, particularly B. Waldenfels' xenological concept, is useful in analyzing disruptions of collective memory. The metaphor of "wounding" in the context of encountering the Alien, and the analysis of "healing" the lived space through interpretation, which uses the tools of the same lived space, prove fruitful in studying commemorative disruptions. The analysis of "suturing" the commemorative disruptions of the 20 th century shows that the very existence of the disruption is made visible through the use of a new narrative, which allows for a new quality of social solidarity. The collective memory of contemporary Ukraine has several lines of disruption, but we can suppose that some of these are not comprehended in society, due to the lack of an appropriate narrative. One example of such a disruption is the collective memory of displaced persons. This disruption finds its reflection in artistic projects, which strive to stress the idea that the creation of a common commemorative space for displaced persons may provoke civic solidarity, which will then help to preclude further social conflicts.

Leadcovers the salient aspects of the chemistry of lead, its environmental impact, and its effects on health. The technical, economic and social importance of Lead, at the present time, is beyond all doubt. However, over the last few decades little attention has been given to its behaviour (the properties and applications of its compounds, the environmental distribution of these derivatives, and their impacts on living creatures), this book addresses that gap. It includes coverage of historical aspects, lead mining and production, metal properties, common lead compounds, uses of lead and its derivatives, coordination chemistry, organometallic chemistry, environmental chemistry, toxicity mechanisms, and treatment strategies for lead poisoning. Finally, describing analytical procedures for the determination of lead in chemical, biological and environmental samples. * Written by a team of university teachers and researchers with extensive experience in the fields of the chemistry, analytical determination and environmental and health impact of lead and other heavy metals * For readers interested in the chemistry and biochemistry of lead and its effects on ecosystems * Provides comprehensive knowledge about lead toxicity and preventive measures against lead poisoning

The paper studies the relationship between key factors influencing senior entrepreneurship and the level of inclusiveness of seniors in entrepreneurial activity in Europe. The objective is to cluster countries with similar patterns in senior entrepreneurial inclusivity and to identify the factors leading to inclusive entrepreneurship of seniors and their social cohesion. The focus is on European countries which participated in Global Entrepreneurship Monitor (GEM) between 2001 and 2012, using GEM data as the main source for the analyses. Initially, the authors identify the key factors influencing entrepreneurial activity of seniors within Europe based upon data contained within the literature review. At the same time, utilizing the senior entrepreneurship inclusivity index, the authors measure the level of inclusiveness in each European country. Using the results of these analyses the authors subsequently implement a cluster analysis method to create clusters among European countries based upon the similarities in the relationship between the levels of senior entrepreneurship and entrepreneurial activity of the general population. This helps them identify countries with above average levels of senior entrepreneurship inclusivity. The results allow the authors to assess key similarities in clustered economies in terms of entrepreneurial culture and policies which have a major influence on senior entrepreneurship.

First published in 1999, this volume features 13 contributors with expertise in social science and environmental research who have brought together comparative 12 articles which study the connection between humanity and nature, focusing on comparisons between the Nordic countries: Denmark, Finland, Norway and Sweden. They are among the most homogeneous and hence most comparable societies in Europe. The articles reflect the need for environmental and political change recognised by social scientists and political scientists across the Nordic countries, with an emphasis on ecological modernisation. They first consider conceptions of the environment, before comparing both between and within these countries. The traditions and institutions presented in the volume reflect the comprehensiveness of the approaches used within the field in the Nordic countries.

The untold story about how the internet became social, and why this matters for its future "Whether you're reading this for a nostalgic romp or to understand the dawn of the internet, The Modem World will delight you with tales of BBS culture and shed light on how the decisions of the past shape our current networked world."—danah boyd, author of It's Complicated: The Social Lives of Networked Teens Fifteen years before the commercialization of the internet, millions of amateurs across North America created more than 100,000 small-scale computer networks. The people who built and maintained these dial-up bulletin board systems (BBSs) in the 1980s laid the groundwork for millions of others who would bring their lives online in the 1990s and beyond. From ham radio operators to HIV/AIDS activists, these modem enthusiasts developed novel forms of community moderation, governance, and commercialization. The Modem World tells an alternative origin story for social media, centered not in the office parks of Silicon Valley or the meeting rooms of military contractors, but rather on the online communities of hobbyists, activists, and entrepreneurs. Over time, countless social media platforms have appropriated the social and technical innovations of the BBS community. How can these untold stories from the internet's past inspire more inclusive visions of its future?

The terms "collaborative economy" or "sharing economy" have been commonly used in recent years to refer to a proliferation of initiatives, business models and forms of work. To observe this significant phenomenon is necessary to take into consideration a new perspective on social, economic, environmental, and political processes that can be created from a number of assets and skills, in innovative ways and at an unprecedented scale. Using of digital technologies for collaboration, communication, coordination, and value creation purposes is included under the same umbrella of the collaborative economy. Market-focused digital innovation is able to disrupt existing business models and support economic activity. The situation in the area of the collaborative economy in Slovakia seems to be different from that of the Western European countries. Data from the area of sharing economy are not registered with the Statistical Office of the Slovak Republic, and there is no analysis examining its impact. We introduce a short summary of case studies examining the collaborative economy platforms in Slovakia and some issues of taxation of the collaborative economy.