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An optimal control model is built considering the private sector's opportunistic effort diversion and reciprocal effort improvement, while a numerical study is conducted to draw some managerial implications.

In infrastructure PPP projects, private sectors may opportunistically divert part of their effort from the current projects to other projects to allocate their limited human resources. Nevertheless, this effort diversion can be inhibited by dynamic incentives since the private sectors reciprocally exert greater effort into the current projects when receiving the dynamic incentives. This article investigates how the government specifies the output standard that the private sector should meet and offers dynamic incentives to mitigate the private sector's opportunistic effort diversion.

The output standard for the private sector to acquire the dynamic incentives should be specified as the output level corresponding to the private sector's optimal long-run stationary equilibrium (OLSE) effort level, which decreases with its reciprocal preference level but increases with its effort-diverting level. The optimal dynamic incentives comprise an initial incentive and a periodic OLSE incentive, which declines with the reciprocal preference level but improves with the effort-diverting level. Besides, the numerical study reveals that the government should distinguish whether the bidders have high effort-diverting levels and, if so, should focus on their reciprocal preference levels and decline the bidders with low reciprocal preference to avoid utility loss.

This article provides a theoretical model combining opportunistic behavior with reciprocal preference through an optimal control lens, thus embedding the problem of incentive design into a broader socioeconomic framework.

In construction projects, engineering variations are very common and create breeding grounds for opportunistic claims. This study investigates the complementary effect between an inspection mechanism and a reputation system in deterring opportunistic claims, considering an employer with limited inspection accuracy and a contractor, which can be either reputation-concerned or opportunistic.

This paper applies a signaling game to investigate the complementary effect between the employer's inspection and a reputation system in deterring the contractor's possible opportunistic claim, considering the information-flow influence of claiming prices.

This study finds that in the exogenous-inspection-accuracy case, the employer does not always inspect the claim. A more stringent reputation system complements a less accurate inspection only when the inspection cost is lower than a threshold, but may decline the employer's surplus or social welfare. In the optimal-inspection-accuracy case, the employer always inspects the claim. However, only a sufficiently stringent reputation system can guarantee the effectiveness of an optimal inspection in curbing opportunistic claims. A more stringent reputation system has a value-stepping effect on the employer's surplus but may unexpectedly impair social welfare, whereas a higher inspection cost efficiency always reduces social welfare.

This article contributes to the project management literature by combing the signaling game theory with the reputation theory and thus embeds the problem of inspection mechanism design into a broader socio-economic framework.

Emotions, understood as evolving mental states, are pivotal in shaping individuals“' decision-making, especially in ambiguous information evaluation, probability estimation of events, and causality analysis. Public–private partnership (PPP) projects represent a confluence of “economic–environmental–social” dimensions, wherein stakeholder behavior follows the sequential progression of “cognition–emotion–action.” Consequently, comprehending the effects of emotional shifts on stakeholder's decision-making processes is vital to fostering the sustainability of PPP projects.

The paper utilizes rank-dependent expected utility and evolutionary game theory to systematically examine the influence of emotional factors on stakeholders' behavior and decision-making processes within PPP projects. The paper integrates three emotional state functions—optimism, pessimism and rationality—into the PPP framework, highlighting the intricate interactions among the government, private sector, surrounding public and the media. Furthermore, the paper amalgamates the evolutionary pathways of environmental rights incidents with the media's role. Through equilibrium analysis and numerical simulation, the paper delves into the diverse interplay of emotions across different phases of the environmental rights incident, assessing the impact of these emotions on the evolutionary game's equilibrium results.

Emotions significantly influence the microlevel decisions of PPP stakeholders, adapting continually based on event dynamics and media influences. When the private sector demonstrates optimism and the surrounding public leans toward rationality or pessimism, the likelihood of the private sector engaging in speculative behavior escalates, while the surrounding public refrains from adopting a supervisory strategy. Conversely, when the private sector is pessimistic and the public is optimistic, the system fails to evolve a stable strategy. However, when government regulation intensifies, the private sector opts for a nonspeculative strategy, and the surrounding public adopts a supervisory strategy. Under these conditions, the system attains a relatively optimal state of equilibrium.

The paper develops a game model to examine the evolutionary dynamics between the surrounding public and private sectors concerning environmental rights protection in waste incineration PPP projects. It illuminates the nature of the conflicting interests among project participants, delves into the impact of emotional factors on their decision-making processes and offers crucial perspectives for the governance of such partnerships. Furthermore, this paper provides substantive recommendations for emotional oversight to enhance governance efficacy.

This study explores the determinants of police officer support for pre-arrest/booking deflection programs that divert people presenting with substance use and/or mental health disorder symptoms out of the criminal justice system and connect them to supportive services.

This study analyzes responses from 254 surveys fielded to police officers in Delaware. Questionnaires asked about views on leadership, approaches toward crime, training, occupational experience and officer’s personal characteristics. The study applies a new machine learning method called kernel-based regularized least squares (KRLS) for non-linearities and interactions among independent variables. Estimates from a KRLS model are compared with those from an ordinary least square regression (OLS) model.

Support for diversion is positively associated with leadership endorsing diversion and thinking of new ways to solve problems. Tough-on-crime attitudes diminish programmatic support. Tenure becomes less predictive of police attitudes in the KRLS model, suggesting interactions with other factors. The KRLS model explains a larger proportion of the variance in officer attitudes than the traditional OLS model.

The study demonstrates the usefulness of the KRLS method for practitioners and scholars seeking to illuminate patterns in police attitudes. It further underscores the importance of agency leadership in legitimizing deflection as a pathway to addressing behavioral health challenges in communities.

The authors estimated the hidden overhead (capital diversion or wasteful use of capital) of Vietnam state-owned enterprises (SOEs).

The authors used a panel data set of 10,200 Vietnam SOEs observed over the period 2010–2018. The authors modeled and estimated the hidden overhead by using a stochastic production frontier. The hidden overhead parameter is modelled as the technical inefficiency in the production function.

Vietnam SOEs are very capital intensive. The hidden overhead (or the wasteful use of capital) is very high with an average rate of 69%.

Alternative estimation methods should be used to account for endogeneity in production inputs. Lack of comparison with the Vietnam private firms.

The paper proposes an original way to quantify hidden overhead (or capital diversion) in the Vietnam SOEs. The finding (a capital diversion rate of 69% on average) is astonishing. It calls for an urgent and profound reform of the Vietnam SOEs.

Sustainability is a major challenge for India’s (Bharat’s) coal mining industry. The government has prioritized sustainable growth in the coal mining industry. It is putting forth multifaceted economic, environmental and social efforts to accomplish the Sustainable Development Goals (SDGs). This research aims to identify the factors for sustainable improvements in coal mining operations. Secondly, this study examines the intensity of causal relations among the factors. Thirdly, this study examines whether causal relations exist among the factors to be considered for sustainable improvement in coal mining operations. Lastly, the study aims to understand how the factors ensure sustainable improvement in coal mining operations.

An integrated three-phase methodology was applied to identify the critical factors related to coal mining and explore the contextual relationships among the identified factors. Fifteen critical factors were selected based on the Delphi technique. Subsequently, the fifteen factors were analyzed to determine the contextual and causal relationships using the total interpretive structural modelling (TISM) and DEMATEL methods.

The study identified “Extraction of Coal and Overburden” as the leading factor for sustainable improvement in coal mining operations, because it directly or indirectly influences the overall mining operation, environmental impact and resource utilization. Hence, strict control measures are necessary in “Extraction of Coal and Overburden” to ensure sustainable coal mining. Conversely, “Health Impact” is the lagging factor as it has very low or no impact on the system. Therefore, it requires fewer control mechanisms. Nevertheless, control measures for the remaining factors must be decided on a priority basis.

The proposed structural model can serve as a framework for enhancing sustainability in India’s (Bharat’s) coal mining operations. This framework can also be applied to other developing nations with similar sustainability concerns, providing valuable guidance for sustainable operations.

The current study highlights the significance of logical links and dependencies between several parameters essential to coal mining sustainability. Furthermore, it leads to the development of a well-defined control sequence that identifies the causal linkages between numerous components needed to achieve real progress towards sustainability.

Using the ethical consequentialist theory of utilitarianism, this paper aims to demonstrate the correlation between the prosecution of Arthur Andersen LLP and the United States Department of Justice’s (DOJ) increased use of pretrial diversion agreements, both nonprosecution and deferred prosecution agreements (N/DPA) for criminal corporations.

Through an analysis of previous literature, the United States Justice Manual, and data from the Corporate Prosecution Registry, this study examines the trend of N/DPAs from 1992 to 2021. Specifically, the data is examined to assess whether a pattern exists before and after the 2002 prosecution of Andersen.

This study finds an exponential increase of N/DPAs after Andersen’s prosecution. The DOJ’s basis for the increased use of these agreements is rooted in the utilitarian theory that the punishment of criminal corporations should deter and rehabilitate behavior while also maximizing the benefit to society (e.g. shareholders, employees and business community). The justice manual, memorandums and public speeches explicitly promote the use of N/DPAs for corporations to minimize collateral damage and the potential for negative societal impact.

This study applies a utilitarian framework to explain the criminal justice system’s increased use of pretrial diversion agreements for criminal corporations.

This study aims to test how waste disposal behaviors can be changed such as higher recycling diversion and lower contamination rates using signage and messaging techniques at public outdoor waste receptacles on a university campus.

The experiment took place at five public outdoor receptacle stations, each with a landfill and recycling receptacle, which were located in highly trafficked areas on the University of Florida campus. The study consisted of three phases, each lasting for three weeks. During phase one, no signage and messaging were introduced; during phase two, negative and concrete messaging was placed on signs that stood above the two receptacles; and during phase three, positive and abstract messaging was placed above the receptacles. Waste audits were conducted by separating and weighing the waste.

With signage and messaging implementation, the recycling diversion rates increased and contamination in the recycling receptacles decreased. However, there was not a consistent decrease in contamination in the landfill receptacles. The study also showed that the negative and concrete messaging was more effective at both increasing diversion rates and decreasing contamination rates at the recycling receptacles.

Waste managers on university campuses need to address the purpose and type of messaging being used at waste receptacles to maximize behavior and/or education outcomes.

To the best of the authors’ knowledge, this study represents the first time waste disposal behaviors have been analyzed and experimented on at public outdoor receptacles on a university campus.

This study aims to present the findings from an ongoing evaluation of a partnership project between a youth justice service and an independent charity that supports the involvement of children with lived experience of youth justice services in work with other young people who have offended and with policy makers and service providers.

The research involved the secondary analysis of project records and 15 semi-structured interviews with youth justice managers and practitioners and the charity’s staff as well as representatives from external organisations with whom it has worked. The analysis focuses on the nature of activities undertaken, the “theory of change” driving these activities, the perceived benefits of the work as well as some of the challenges involved.

The findings suggest positive outcomes for children in terms of increased engagement and participation, improvements in confidence and self-esteem and the development of personal, social, health and educational skills. The project represents a compelling example of what child-first diversion looks like in practice.

The article adds to existing knowledge of the benefits and challenges of involving children with recent experience of the youth justice system in service delivery and in co-production work with policy makers and service providers. It also offers insights into recent changes in youth justice policy in England and Wales, in particular the commitment to treating children as children first.

This paper aims to explore the role of tramadol in pain management and the impact of regulatory measures on supply and medical access in Ghana and other African countries.

The study adopted an exploratory design and qualitative methods to explore the perspectives of different actors, including officials of regulatory agencies, law enforcement agents, health-care providers and non-medical tramadol users. Data were collected through individual and group interviews, and transcripts were subjected to thematic analysis.

Findings show that tramadol fills a critical gap in treating pain across Ghana in areas with an acute shortage of opioid analgesics due to scheduling-related barriers. This was partly due to porous borders allowing for an influx of tramadol into the countries. The study further found that most tramadol purchases in Ghana and other West African countries were made from market traders rather than from health-care settings and were mainly generic medicines categorised as “substandard/spurious/falsely-labelled/falsified/counterfeit medical products” within the World Health Organization standards.

Although the findings are instructive, there were some limitations worth noting. The study encountered several limitations, especially with the non-medical users, because the environment is highly criminalised, People who use drugs were unwilling to avail themselves for fear of law enforcement officers’ harassment. Obtaining ethical clearance had its own bureaucracy – challenges that delayed the study time frame.

Placing tramadol under the list of internationally controlled substances would create barriers to access to effective pain medications, particularly by the poor, and encourage victimisation of users by law enforcement authorities.

The study is based on empirical research on tramadol use and regulation in African countries, contributing to knowledge in an under-researched subject area on the continent. The comparative approach further adds value to the research.