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This chapter focuses on emergency and hastily formed knowledge networks. All six facets of knowledge networks are described. The importance of four of the six facets is called out, including domain, topology, nodes, and relationships among the networks’ members. The authors provide four network profiles, including emergency and disaster response networks, law enforcement networks, military networks, and militia and vigilante networks.

The purpose of the article is to analyse the use of cryptocurrencies in general and Bitcoin specifically. The majority of academics are aware of the benefits of using cryptocurrencies for trade facilitation, cost reduction, and similar purposes. Peer-to-peer and remittance transactions without compliance requirements have the potential to be transformed and revolutionised by cryptocurrencies; nevertheless, end users must overcome several obstacles relating to security, privacy, and control in order to take use of Bitcoin. The study elaborates on several facets of cryptocurrencies, beginning with their early development, difficulties and dangers, chances, benefits and drawbacks, and prospects. Secondary data has been used for this study like as from government sources, Scopus indexed journal, famous print media. The study find the addressed challenges pertaining to the operational and technological aspects of cryptocurrencies. And how to resolve the modern problem faced while using cryptocurrency. So we conclude that it is difficult to predict the future of cryptocurrencies, as there is still a lot of work to be done, especially in the area of formal rules.

Implications: In this digital era there is a need for cryptocurrency while the whole world is turning into a cashless economy, this will be useful for our common society and have the best use for implication in the business sector, this will stop the paperwork and sustainability, and, even there is threat cybercrime while the use of cryptocurrency will be increased so by data protection and strong security and protection bill or regulation will give the usual and systematic direction for uses and one line development.

This case study describes practices in a micro-entrepreneur peer-to-peer network (MicroENTRE network), an example of a community of practice (CoP) where entrepreneurs, researchers and local public business advisory services (PBAS) seek to promote entrepreneurial behaviour through joint activities, such as sharing ideas, peer learning and business development. The concept was originally established to address the practical needs of micro-entrepreneurs and business development agencies in sparsely populated areas (SPA). Through the network, micro-entrepreneurs and PBAS are provided with direct contact to the university research team, which transfers recent research-based knowledge to the network. This chapter bridges the literature on micro-entrepreneurship and entrepreneurial behaviour in networks through an empirical description of micro-entrepreneurs’ activities in the context of a peer-to-peer network using the typical CoP activity classifications developed by Wenger as the framework. The case study is based on the longitudinal analysis of monthly meetings (from 2015 to 2019) of 13 micro-entrepreneur groups. The data consist of participatory observations during the network meetings and the audio recordings and meeting memos of the authors. The findings describe typical examples of CoP activities in the network. For example, entrepreneurs use the network to share ideas, make requests for advice based on experience of fellow entrepreneurs and reuse the assets of other network members. Moreover, the data show that regular, peer-to-peer network meetings, jointly facilitated by PBAS and researchers, are an acceptable and accessible platform for micro-enterprise development in SPA.

The health industry is rapidly adopting digital services and face-to-face offerings are being replaced by e-services. One example is peer-to-peer survivor networks for cancer patients. This study investigates the virtual exchanges in survivor networks and whether these exchanges are valued for economic, symbolic, or expressive worth. The research seeks to address whether the alleviation of loneliness is possible.

The qualitative work in this study utilizes netnographic explorations and in-depth interviews with cancer survivors, average age 62, to investigate the social exchange continuum in peer-to-peer online patient survivor networks.

This study shows that technological innovations can aid survivorship when the exchanges are meaningful. Meaningful interactions within gift systems are valued for expressive worth and are established upon the notion of selfless gifts where the giver expects nothing in return. For networks to operate via expressiveness, informants must be open and vulnerable to others. Findings show that biographical narratives are useful tools for creating an expressive environment and givers become more giving after engaging in selfless acts. The intangibility and immaterial nature of virtual gifts creates a collective identity and fosters an aggregate extended self.

Implications emphasize the need among survivors of trauma to connect with others. Digital technologies allow connections on a global scale, so survivors can find others with similar needs. Peer-to-peer networks provide a way for survivors to meet, interact with, and extend their aggregate selves through other survivors, while experiencing a transcendent sense that they are part of something bigger than self alone.

This chapter focuses on community and social group networks. All six facets of knowledge networks are described. The importance of three of the six facets is called out, including geography, domain, and the messages exchanged across the network. The authors provide profiles of five networks, including family networks, neighborhood networks, issue and support networks, community organization networks, gangs and criminal networks, and sports and gaming networks.