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With the continuous improvement of public–private partnership (PPP) projects, the participants' value creation goals are not only limited to achieving the basic performance objectives but also to realising value added. However, the effect of traditional contract management on realising the value creation objectives of PPP projects is limited. According to the view of multifunctional contract, joint-contract functions that integrate contract control and flexibility are likely to be effective in enhancing the value creation of PPP projects. This study aims to explore the effects of joint-contract functions on PPP project value creation and relevant influencing mechanism by investigating the mediating effect of in-role behaviour and extra-role behaviour.

After collecting 258 valid questionnaires from PPP professionals in China, this study used structural equation modelling to validate the hypotheses.

Contract control and flexibility can improve PPP project value creation. Specifically, contract control improves the achievement of the basic contract objectives of PPP projects, whereas contract flexibility enhances the achievement of the value-added of PPP projects. Moreover, only in-role behaviour mediates the effect of contract control on value creation. In addition, the mediating effect of extra-role behaviour on the impact of contract flexibility on value creation is stronger than that of in-role behaviour. The mediating effect of in- and extra-role behaviour is mainly reflected in the realisation of basic and value-added performance, respectively.

The findings of this study can help realise value creation in three ways. Firstly, new perspectives for PPP project value creation should be proposed by combining the improvement of contract objectives and the realisation of the participants' implicit demands. Secondly, the effects of different contract functions on value creation should be analysed instead of a single dimension of contractual governance. Thirdly, the mediating effects of different types of cooperation behaviour that may influence the relationship between contractual governance and value creation should be evaluated.

This study verifies the impacts of different contract functions on PPP project value creation. In addition, cooperative behaviour is embedded as a mediating variable, and the mediated transmission path from contract function to cooperative behaviour and further to PPP project value creation is systematically analysed.

Trust is the glue that holds cooperative relationships together and often exists in an asymmetric manner. The purpose of this study is to explore how to mitigate the issue of losses or increased transaction costs caused by opportunistic behavior in a soft environment where trust asymmetry is quite common and difficult to avoid.

This study focuses on examining asymmetric trust between the government and the private sector in public-private partnership (PPP) projects. Drawing upon both project realities and relevant literature, the primary conditional variables influencing asymmetric trust are identified. These variables encompass power perception asymmetry, information asymmetry, interaction behavior, risk perception differences and government-side control. Subsequently, through the use of a survey questionnaire, binary-matched data from both the government and the private sector are collected. The study employs fuzzy-set qualitative comparative analysis (fsQCA) to conduct a configurational analysis, aiming to investigate the causal pathways that trigger asymmetric trust.

No single conditional variable is a necessary condition for the emergence of trust asymmetry. The pathways leading to a high degree of trust asymmetry can be categorized into two types: those dominated by power perception and those involving a combination of multiple factors. Differences in power perception play a crucial role in the occurrence of high trust asymmetry, yet the influence of other conditional variables in triggering trust asymmetry should not be overlooked.

The findings can contribute to advancing the study of trust relationships in the field of Chinese PPP projects. Furthermore, they hold practical value in facilitating the enhancement of trust relationships between the government and the private sector.

Early termination of public–private partnerships (PPPs) in China is caused by various risk factors, resulting in significant losses. This study aimed to clarify the key factors and identify the causal relationships among these factors.

Social network analysis (SNA) was used to analyze 37 risk factors that were summarized from 97 early terminated PPP cases and to identify the relationships among these key risk factors. Interpretive structural modeling (ISM) was conducted to explore the causal relationships. Data were collected from case documents, questionnaires and interviews.

A total of 17 key risk factors were identified and distributed in a hierarchical structure with six tiers. Among these key risk factors, the root causes affecting the early termination of PPP projects were government oversight in decision-making, local government transition, policy and law changes and force majeure. The direct cause was insufficient returns. Furthermore, local government and private sector defaults were essential mediating factors. Local government transition and the low willingness of the private sector were highlighted as potential key risks.

The cases and experts were all from China, and outcomes in other countries or cultures may differ from those of this study. Therefore, further studies are required.

This research provides knowledge regarding the key risk factors leading to the early termination of PPP projects and guidance on avoiding these factors and blocking the factors' transmission in the project lifecycle.

This study contributes to the knowledge of risk management by emphasizing the importance of local government transition, the low willingness of the private sector and project cooperation and operation, whose significance is ignored in the existing literature. The proposed ISM clarifies the role of risk factors in causing early termination and explains their transmission patterns.

This study aims to explore the empirical relationship between public–private investment (PPI) in energy and environmental quality.

The authors hypothesize that PPI can reduce pollution emissions and test this hypothesis by sampling the 20-year data of emerging and growth-leading economies (EAGLE) and adopting two estimation techniques named panel estimated generalized least square and fully modified ordinary least square models.

The empirical analysis vows that PPI has an inverse relationship with CO₂ emissions, corroborating the sustainable development driving role of PPI. In addition, the empirical outcomes suggest a negative/positive role of energy imports and economic growth. Meanwhile, foreign direct investment is negatively linked with CO₂ emissions, corroborating the pollution halo hypothesis in the case of EAGLE. However, financial development shows a positive relationship with CO₂ emissions.

This study offers an important policy outlay regarding the pollution mitigation role of PPI in EAGLE. The environmental sustainability in underlying economies can be achieved by enhancing the magnitude of public–private cooperation in energy investment. The empirical analysis supplements cutting-edge empirical evidence regarding PPI as a driver of important sustainable development goal (SDG), i.e. environmental sustainability.

To the best of the authors’ knowledge, this study is the first study that examines how one can achieve an important SDG regarding environmental sustainability through PPI in energy.

Higher productivity in the potato value chain in Rwanda requires good quality seed potatoes. The article analyzes how innovations were introduced in the framework of a development project resulting in a partnership between a firm and two educational institutions to produce better seed potatoes, using the Triple Helix approach.

In the Triple Helix model government, academia and the private sector work together to develop and introduce innovations. This led to producing and introducing improved seed potatoes at an affordable price through a public private partnership (PPP). Interviews with experts and a survey of local producers were carried out to identify factors influencing the success of the partnership.

A Service, Training and Innovation Center (STIC) has been created to produce the first clean potato seeds in Africa on a commercial scale, based on cultivation of in vitro potato plantlets and aeroponics to produce mini-tubers. It is called Seed Potato Advancement Centre, an education–enterprise partnership, using these plantlets to produce mini-tubers through aeroponics. Seed multipliers are responsible for the next three stages of seed multiplication. The final product is the certified potato, sold to ware potato farmers. The availability of disease-free seed potatoes in Rwanda gives a boost to the potato value chains and contributes to food security. The partnership was successful because of the support from the government and donors, with the private sector and the extension services helping to implement the innovations effectively.

The limitation is that the number of experts interviewed is limited and the survey did not only deal with potato-related activities. The focus is on one region only, but the most important potato growing area in Rwanda.

STICs function as a tool for cooperation between government, private sector and the knowledge sector to achieve commercial and development goals. They function as a channel for technology transfer. They allow applied research, including agronomic research; information collection; and dissemination, networking, training, organization of outreach activities. The model can be repeated in other sectors and countries.

The paper looks at a PPP in agriculture with educational institutions. Second, the Triple Helix and value chain literature is used to study the introduction and implementation of appropriate innovations, while factors determining the success of the partnership were identified. This concerns the first production of clean seed potatoes in Africa on a commercial scale.

Sustainable economic growth in both developed and developing countries requires the restructuring and expansion of road transportation infrastructures (RTIs). However, RTIs are always subject to high costs and delays, especially in developing countries with fewer resources than developed ones. Cost overruns and inaccurate forecasts usually lead to project failures. In this regard, some governments in developing countries have adopted public–private partnerships (PPPs) to deliver RTI projects with very positive outcomes. However, academic research has not yet studied the most recurring barriers and associated solutions to adopting PPPs in RTIs particularly for developing countries. This paper aims to fill up this knowledge gap in the existing literature.

A Delphi survey method involving 103 experts in RTIs based in Iran was implemented. Results indicated that the most perceived barriers to applying PPPs in RTIs in developing countries are linked to political, legal and economic factors. Ten other experts also participated in semistructured interviews, which were thematically analyzed to provide practical effective solutions for overcoming those identified barriers.

The findings indicated that all the presented barriers achieved above-average scores and could be considered severe obstacles of applying PPPs in RTIs for developing countries. In terms of barriers and solutions reported, these seem to converge on three profound elements: political stability, legal framework and conjoint management.

To the best of the authors’ knowledge, this is the first-ever research study regarding the barriers to adopting PPPs in delivering RTI projects for developing countries. Practical recommendations for overcoming these perceived barriers and achieving better implementation of PPPs in RTIs for developing countries were advocated. This work has contributed to the extant PPP theory as the management of coproduction in delivering RTI projects.

Poor municipal solid waste management is a major characteristic of urban development in Africa. In Ghana, local governments are mandated to ensure the collection, treatment and disposal of solid waste. However, this has been a herculean task for local governments in Ghana, owing to inadequate resources and weak technical capacities. This has prompted calls for, and actual involvement of the private sector through public-private partnerships (PPPs) in municipal solid waste management, particularly in the urban areas. This study aims to assess the roles, effectiveness and challenges of PPPs in urban waste management in the Sunyani municipality of Ghana.

Adopting a case study design, the study used a qualitative research approach to provide in-depth insights into PPPs in municipal solid waste management in the Sunyani municipality of Ghana. Therefore, key informant interviews and two focus group discussions were conducted.

The study revealed that some policies and actions of the local government (Assembly) do not positively facilitate the effective functioning of PPPs in municipal solid waste management. There is also lack of effective stakeholder consultation, collaboration and grassroot inclusion in the PPPs which affect the effective management of the increasing volumes of solid waste being generated within the municipality.

To achieve the objectives of the PPP arrangements, local authorities should initiate steps to effectively coordinate all the involved private companies. There must also be ways of involving the beneficiaries in the design and implementation of PPPs on waste management to allow for effective grassroots and participatory monitoring and evaluation.

The uniqueness of the case study being a mid-sized and secondary city in a developing country enhances the value of the findings and the application of recommendations in cities with similar characteristics and initiatives in improving PPPs in municipal waste management.

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.

Based on the theoretical background of stakeholder capitalism, the purpose of this paper is to contribute to the scientific debate on the topic of public–private partnerships (PPPs), considering in particular how this governance structure relates to the pursuit of sustainable development. Specifically, this objective will be pursued with a focus on stakeholder relations and governance aspects, to highlight enablers and barriers in change for sustainability.

The systematic literature review is applied starting with the use of keywords in Web of Science, which leads to the extrapolation of 629 articles on the topic of “PPP and sustainability”. Subsequently, through various skimming steps, 75 papers are sampled. A mixed (quantitative-qualitative) approach is then followed: a co-word semantic network to identify the pattern of discourse and a more in-depth and explanatory analysis of the papers. These quantitative and qualitative tools synergistically work together to evidence the main aspects related to the aim of the paper.

With reference to the governance structure and stakeholders of PPPs, the analyses highlight the shift towards a triadic type of relational governance that considers stakeholders (especially the community) in addition to public–private partners. This can improve the partnership's performance (particularly in sustainable development) and social legitimacy. With reference to the role of PPPs in the implementation of sustainable development, they have positive potential in terms of implementing sustainability and raising stakeholder awareness of it. Nevertheless, PPPs may entail risks to the implementation of sustainability. The findings lead to some concluding remarks on future research opportunities.

The research leads to some managerial implications, such as the need to follow a competitive collaboration approach among stakeholders, to develop relational governance skills and related managerial tools and to incorporate sustainability aspects starting from the design of PPPs.

The originality aspect of this research is the consideration of a PPP by relating it to the pursuit of sustainability. Such an inter-organizational structure could be suitable to deal with the complexity inherent in the implementation of sustainability and is peculiar in terms of governance and stakeholder relations, considering that it is characterised by the presence of several partners of different nature (public and private).

This study aims to assess the role of the National Archives of South Africa (NARSSA) in promoting the preservation and management of private archives.

This study used the qualitative method, and data was collected through unstructured questionnaires and interviews. In addition, purposive sampling was used to collect data from the selected archivist.

The study found that the NARSSA raised awareness on the preservation of private archives and is also in the process of reviewing the National Archives and Records Service Act 43 of 1996 to promote the preservation and management of private archives. The study also revealed that the role of the NARSSA in enforcing compliance with Section 14 of the National Archives and Records Service Act 43 of 1996 for the proper management and coordination of private archives was ineffective because of a lack of coordination, infrastructure, training and development.

The qualitative data was obtained from three participants with the NARSSA and two selected from private archives. The sample is small to generalise results. The public–private cooperation in archives management is limited, and this is proved by the severely limited number of participants in the research. Furthermore, the private archive in this study is limited to the liberation movement archives institutions in South Africa.

This study could work as a stimulus for potential approaches to conduct further research on the possible kinds of cooperation between private–public archival organisations.

The study is innovative, in that there are very few research investigations that focused on the cooperation between private and public archives in the African region and especially in South Africa.

The article makes a significant contribution to the area of private–public archival organisations, especially in South Africa. It will expand the knowledge on private–public archive cooperation and management in South Africa and the rest of the African continent.