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The purpose of this chapter is to characterize fictitious capital and fictitious profits as extreme expressions of the fetishism of capital. Considering the incessant search for valorization and allowing for fictitious forms of capital, the subject of this study is at the center of the dynamics of recent capitalist accumulation, especially when we take into account the capitalist crises over the last four or five decades. Its mechanism of fictitious valorization (M – M′), a decisive dimension of contemporary capitalism, is contradictory, based on the growing obstacles to the extraction of surplus value on an expanded scale, and therefore the real valorization of capital. At the same time, we support the idea that this mass of overaccumulated capital produces profits unrelated to surplus value, that is fictitious profits, further intensifying the fetishistic and contradictory nature of capitalism.

This study addresses the COVID-19 infection and its relationship with the city’s constructive intensity, commuting time to work and labor market dynamics during the lockdown period.

Microdata from formal workers in Recife was used to adjust a probability model for disease contraction.

The authors' results indicate that greater distance to employment increases the probability of infection. The same applies to constructive intensity, suggesting that residences in denser areas, such as apartments in buildings, condominiums and informal settlements, elevate the chances of contracting the disease. It is also observed that formal workers with completed higher education have lower infection risks, while healthcare professionals on the frontlines of combating the disease face higher risks than others. The lockdown effectively reduced contagion by limiting people’s mobility during the specified period.

The research shows important causal relationships, making it possible to think about public policies for the health of individuals both when commuting to work and in living conditions, aiming to control contagion by COVID-19.

The lockdown effectively reduced contagion by limiting people’s mobility during the specified period.

It is also observed that formal workers with completed higher education have lower infection risks, while healthcare professionals on the frontlines of combating the disease face higher risks than others.

The authors identified positive and significant relationships between these urban characteristics and increased contagion, controlling for neighborhood, individual characteristics, comorbidities, occupations and economic activities.

This study focused on establishing the mediating role of opportunistic behavior in the relationship between institutional pressures and procurement cycle time (PCT) in Uganda’s central government (CG) procuring and disposing entities (PDEs). The study also sought to establish the relationship between institutional pressures and PCT, between institutional pressures and opportunity behavior and between opportunistic behavior and PCT. This study was carried out because most PDEs had failed to perform well in terms of PCT, and beneficiaries had often complained of the lengthy PCT.

The unit of analysis was 126 CG PDEs within Uganda while the unit of inquiry was three employees per PDE, namely, giving a total of 378 respondents. Using a quantitative cross-sectional survey, the study realized a response rate of 88% for the unit of analysis and 71.7% for unit of inquiry. Data were analyzed using SmartPLS 4 with focus on ascertaining regression and mediation results.

The findings show that institutional pressures negatively and significantly predict both institutional pressures and PCT (ß = –0.569**; ß = –0.688**, respectively). Also, institutional pressures and opportunistic behavior are significant predictors of PCT, predicting 60.6% change in PCT. Furthermore, opportunity behavior partially moderates the relationship between institutional pressures and PCT.

For Uganda’s CG PDEs to reduce procurement delays and to procure within PCT, they should put more emphasis on institutional pressures and curtailing opportunistic behavior. The study recommends further amendment of the Public Procurement and Disposal of Public Assets (PPDA) Act 2003 to reduce delays.

There is need for further amendment of the PPDA Act 2003 to reduce delays, especially those attributed to approvals by contracts committee and the minimum bidding period for competitive bidding.

The study explores PCT and its antecedents whose understanding is critical in exploring avenues of reducing PCT and boosting service delivery to the beneficiaries.

The PPDA Act (2003) was amended in 2014, but still the time spent in the procurement processes has remained long, hence delaying or denying citizens service delivery. This is a matter of concern to the country at large and may spill into political unrests, and yet, there is scant literature exploring PCT and its antecedents. This makes the present study one of the pioneer empirical studies on PCT, with emphasis on Uganda. This study provides a framework for examining PCT in a context where scholarly explanation of PCT is still limited.

The purpose of this study is to extensively explore the vehicular network paradigm, challenges faced by them and provide a reasonable solution for securing these vulnerable networks. Vehicle-to-everything (V2X) communication has brought the long-anticipated goal of safe, convenient and sustainable transportation closer to reality. The connected vehicle (CV) paradigm is critical to the intelligent transportation systems vision. It imagines a society free of a troublesome transportation system burdened by gridlock, fatal accidents and a polluted environment. The authors cannot overstate the importance of CVs in solving long-standing mobility issues and making travel safer and more convenient. It is high time to explore vehicular networks in detail to suggest solutions to the challenges encountered by these highly dynamic networks.

This paper compiles research on various V2X topics, from a comprehensive overview of V2X networks to their unique characteristics and challenges. In doing so, the authors identify multiple issues encountered by V2X communication networks due to their open communication nature and high mobility, especially from a security perspective. Thus, this paper proposes a trust-based model to secure vehicular networks. The proposed approach uses the communicating nodes’ behavior to establish trustworthy relationships. The proposed model only allows trusted nodes to communicate among themselves while isolating malicious nodes to achieve secure communication.

Despite the benefits offered by V2X networks, they have associated challenges. As the number of CVs on the roads increase, so does the attack surface. Connected cars provide numerous safety-critical applications that, if compromised, can result in fatal consequences. While cryptographic mechanisms effectively prevent external attacks, various studies propose trust-based models to complement cryptographic solutions for dealing with internal attacks. While numerous trust-based models have been proposed, there is room for improvement in malicious node detection and complexity. Optimizing the number of nodes considered in trust calculation can reduce the complexity of state-of-the-art solutions. The theoretical analysis of the proposed model exhibits an improvement in trust calculation, better malicious node detection and fewer computations.

The proposed model is the first to add another dimension to trust calculation by incorporating opinions about recommender nodes. The added dimension improves the trust calculation resulting in better performance in thwarting attacks and enhancing security while also reducing the trust calculation complexity.