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One of the existing and commonly used solar energy harvesting devices is the parabolic trough solar collector (PTSC). Because of their ability to operate in low and medium temperatures, parabolic trough concentrators are widely used in power generation plants and industrial process heating applications. Therefore, the investigation of how different operating conditions affect these devices’ overall efficiency has received a great deal of attention in the recent decade. This study aims to enhance the thermal performance of the PTSC and reduce the system cost.

In the novel configuration, a noncirculated nanofluid absorbs solar radiation through a glass wall. The base fluid was synthetic oil (5W30), and the nanoparticles used were copper oxide. The heat captured is immediately absorbed by the water circulating inside the copper tube immersed in the nanofluid. ANSYS FLUENT 15.0 was used for carrying out computational fluid dynamics simulations for two models of single and triple copper tubes. The experimental results obtained from a test rig constructed for this purpose were compared with the numerical outcomes of the single copper tube model.

The findings of the simulation demonstrated that performance was superior for the single copper tube model over the triple copper tube model. The numerical findings of the single copper tube model were compared with the experimental results. The numerical and experimental results differed from 3.17% to 5.6%. Investigations were carried out to study the effects of varying the volumetric flow rate of (20, 40, 60 and 80 L/h) and water inlet temperatures of (300, 315 and 330 K) on the effectiveness and performance of the newly developed model. Additionally, two nanofluid volume fractions of 0.05% and 0.075% were used for investigating their effect on the performance of the novel configuration. According to the findings, the highest thermal efficiency of 55.31% was recorded at 0.075% concentration and 80 L/h volume flow rate.

In this study, a novel direct absorption solar collector configuration using a noncirculated nanofluid was designed to enhance the thermal efficiency of PTSC. This new approach makes it possible to boost the thermal performance of the PTSC and lower the system’s cost.

This paper aims to investigate the interrelated role of relational commitment and dependence as drivers of key performance outcomes. Specifically, the authors provide a conceptual model of the impact of commitment on relationship value dependence and switching cost dependence. The authors further investigate how these dimensions of dependence offer differing noneconomic and economic paths to strategic and financial performance.

Survey data was collected from 296 purchasing agents across multiple industries located in the USA. The conceptual model and accompanying hypotheses were tested via partial least squares structural equation modeling.

The results show that the relational path is driven by affective and normative commitment, which are related to relationship value dependence. Conversely, calculative commitment is related to switching cost dependence. This economic path is related to both strategic and financial performance, whereas the relational path is more closely related to strategic as opposed to financial performance outcomes.

This study extends research on Business-To-Business (B2B) relationships by leveraging social exchange theory to examine the interrelated roles played by two forms of dependence on performance outcomes. Thus, the authors answer Scheer et al.’s (2015) call for research into the two distinct types of dependence – relationship value and switching cost dependence – and their roles in determining B2B relationship outcomes. The findings contribute to the literature by integrating social exchange and relationship marketing concepts to develop a dual pathway approach to B2B partnerships.

The results suggest that dependence is not necessarily negative for firms. Specifically, buyers can and do still exhibit positive performance, both strategic and financial, in relationships with suppliers even when dependent on the relationship. Regardless of whether buyers are dependent due to a relationship or economic factors, both can, in different ways, lead to positive strategic and financial outcomes. Together, the authors contribute to the understanding of B2B partnerships by offering guidelines for both buyers and suppliers in the dyad.

The authors derive a comprehensive model depicting primarily relational and economic paths to performance through different types of commitment and dependence. The authors contribute to the literature by demonstrating that relational and economic paths to success are not the same, highlighting how firms could influence performance even when the relationship is not necessarily characterized by generally positive relational benefits and behaviors.

According to the literature, general personality traits are less strongly related to the creation of new ventures than specific/proximal personality traits. Therefore, this study aims to understand the different proximal personalities that influence the entrepreneurial intention to start a new venture and the relationship between them.

Data were gathered through a self-administered questionnaire filled in by students of entrepreneurship or related courses at the end of the second semester (2019/2020 academic year), and the research option is based on covariance-based structural equation modelling.

The results of this study show that entrepreneurial intentions can be predicted by specific individual traits, namely, risk-taking, entrepreneurial alertness, creativity, proactivity and self-efficacy. Moreover, it was found that risk-taking mediates the relationship between entrepreneurial alertness and proactivity. On the other hand, students’ creativity mediates the relationship between risk-taking and proactivity. Finally, students’ self-efficacy mediates the relationship between proactiveness and entrepreneurial intention.

The results have implications for entrepreneurship education given that a better understanding of the personality traits that influence entrepreneurial intentions can lead to the development of new approaches and pedagogical tools.

This model can be used as a diagnostic tool for designing an effective and efficient entrepreneurship curriculum and pedagogy, acting as an (ongoing) audit of students’ entrepreneurial intentions to get a scientific basis in case of further course/module adjustments.

This paper presents the findings from the assessment of the determinants of cloud computing (CC) deployment by construction organisations. Using the technology-organisation-environment (TOE) framework, the study strives to improve construction organisations' project delivery and digital transformation by adopting beneficial technologies like CC.

This study adopted a post-positivism philosophical stance using a deductive approach with a questionnaire administered to construction organisations in South Africa. The data gathered were analysed using descriptive and inferential statistics. Also, the fusion of structural equation modelling (SEM) and machine learning (ML) regression models helped to gain a robust understanding of the key determinants of using CC.

The study found that the use of CC by construction organisations in South Africa is still slow. SEM indicated that this slow usage is influenced by six technology and environmental factors, namely (1) cost-effectiveness, (2) availability, (3) compatibility, (4) client demand, (5) competitors' pressure and (6) trust in cloud service providers. ML models developed affirmed that these variables have high predictive power. However, sensitivity analysis revealed that the availability of CC and CC's ancillary technologies and the pressure from competitors are the most important predictors of CC usage in construction organisations.

The paper offers a theoretical backdrop for future works on CC in construction, particularly in developing countries where such a study has not been explored.

The purpose of this paper is to present a quantitative and qualitative synthesis of the diverse academic proposals and initiatives for preventing and eliminating hate speech on the internet.

The foundation for this study is a systematic review of papers devoted to the analysis of hate speech. It has been conducted using the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) protocol and applied to an initial corpus of 436 academic texts. Having implemented the suitability, screening and inclusion criteria, this corpus was refined to a sample of 74 articles.

The main subject categories studied in this corpus of academic research are legal issues and social media. In the majority of the articles, the use of hate speech via social media is associated with five typologies: religion, cyber racism, political slurs, misogyny and attacks on the LGTBI community. The absence of ethical reflection is one of the major shortcomings of IT-focused research and analysis devoted to online hate speech.

To date various systematic reviews have been presented, and they focus on detecting or describing hate speech. These have used either the search appraisal synthesis analysis framework or the Cochrane network. The PRISMA protocol was applied for this study, and both Scopus and texts in German were included. To date no major, rigorous systematic review has been undertaken of proposals to combat hate speech.

The link between hate speech and poverty has not been studied in depth within the academic sphere. Tolerance and ethical compassion are not granted the attention they merit when it comes to analysing the phenomenon of hate speech.

The aim of this research is to discuss the effect of corruption on conventional management of cultural heritage (CH) resources in Nigeria. It identifies the means by which the effect can be curtailed to bring about proper management system in the CH sector and pave the way for economic/sustainable development through cultural tourism in the country.

The research draws from both exploratory and comparative approaches. It took a study of selected locations and museums in the six geopolitical zones of the country, with a review of literatures on cultural heritage management (CHM). It also gives summarized information on the present overall effect of corruption in the CH sector of Nigeria.

The research reveals that there are some levels of mismanagement and destruction of CH resources in the country. This is manifested in acts of museum theft, illicit trafficking, unlawful possession and general mishandling of CH, as well as the deterioration of facilities in the sector. The research gathered that the problem came as a result of wrongful appointment of none heritage experts as heads of heritage-related institutions and agencies. It also results from lack of required attention by the government and other relevant stakeholders (such as community leaders/members, academics and law enforcement agencies, inter alia) toward CH preservation, protection, management and promotion for sustainable development. The research recommends that the government and other CH stakeholders (mentioned above) should make efforts to address the issues discussed, so as to improve the management of CH in the country for sustainable development.

Prior to this research, there has been no publication addressing the effect of corruption on CHM in this context and location. The article makes recommendations that call for action and also set grounds for future discourse.

This study investigated employee cynicism and workplace ostracism as pathways through which perceived organizational politics (POPs) is related to counterproductive work behavior (CWB) targeted at individual coworkers (CWB-I) and the organization (CWB-O).

Data were collected from 794 university employees in Southeastern, Nigeria at three-point of measurements.

Results of the Structural Equation Modelling showed that POPs positively predicted CWB-I but did not predict CWB-O directly. POPs positively predicted both employee cynicism and workplace ostracism. Employee cynicism did not predict CWB-I and CWB-O, but workplace ostracism positively predicted both CWB-I and CWB-O. Moreover, whilst POPs did not predict both CWB-I and CWB-O through employee cynicism; workplace ostracism partially mediated the relationship between POPs and the two dimensions of CWB.

The relationship between POPs and CWB has been documented in the literature, but whether affect-laden processes (employee cynicism and workplace ostracism) explain this relationship is new. Conducting the study in a context previously neglected extended our understanding of the indirect relationship between POPs and CWB.

Anchored on the broaden-and-build theory and the circumplex model, the authors develop and test a conceptual model in which satisfaction, influenced by an effective handling of communication, cooperation, conflict, and opportunism, is set as the predictor of inter-partner creativity in the relationship between hotels and their foreign travel agents under the Covid-19 pandemic.

The conceptual model was tested with data collected from 190 randomly selected hotel units located in Greece, using both online and drop-in questionnaire methods. Data were analyzed using SEM analysis.

Satisfaction with the working relationship was found to be enhanced by improving communication and cooperation, as well as by keeping conflict and opportunism at low levels. This was a strong predictor of inter-partner creativity, although less pronounced under high levels of relational distance and rigidity.

The study should be extended to other country settings, replicated at different levels of crisis severity, and use dyadic data. Additional environmental factors could be used as boundary conditions, while our model could be expanded to include additional drivers and consequences of inter-partner creativity.

To generate inter-partner creativity, there is a need to maintain high levels of satisfaction through proper communication, enhanced cooperation, conflict minimization, and avoidance of opportunistic actions. Also, to better translate satisfaction into inter-partner creativity, interacting parties should keep distance at low levels, while at the same time demonstrate greater flexibility.

The study unveils the role of effectively managing behavioral factors in inter-firm relationships to develop creative solutions to the Covid-19 crisis challenges, an issue neglected by prior research. The study also sheds light on the contingent effects of distance and rigidity, two important factors moderating relationships under crisis. The study applies for the first time two psychological-based theories, the broaden-and-build theory and the circumplex model, to an international marketing crisis situation.

Although there has been a surge in the adoption of building information modelling (BIM) in the construction industry, the small and medium-sized enterprises (SMEs) are still struggling and perceive its adoption as risky. The SMEs in developing economies are especially on the disadvantaged side of the digital divide. Extant studies have focused on large firms and there are scanty studies on the influence of the external environments on BIM adoption in SMEs. Thus, this study espouses institutional theory (INT) to examine the influence of coercive, mimetic, and normative pressures on BIM awareness and adoption in SMEs.

A quantitative approach was employed, and data were collected from the Nigerian construction SMEs via an empirical questionnaire survey using a sequential stratified and convenient sampling method. Hypothesized relationships between the coercive, mimetic, and normative pressure and BIM in SMEs were empirically tested using the partial least squares structural equation modelling (PLS-SEM) technique and the model was validated with the “PLSpredict” procedure.

The results revealed that coercive and mimetic pressures significantly influence BIM adoption in SMEs while normative pressures have the strongest influence on BIM in SMEs. Also, BIM awareness is an important predictor of BIM adoption. The findings also shed light on the influence of firmographics on BIM awareness and adoption in Nigerian SMEs.

The study empirically validates the applicability of INT and highlights that BIM adoption is not only influenced by internal responses to the need for efficiency but also by external pressures. It implies a clear need for intentional isomorphic pressures in driving BIM adoption in SMEs. The study employs the INT to explain a phenomenon that has not been theoretically explored in the context of SMEs in developing economies. Lastly, the study provided valuable insights into driving BIM adoption, together with the effective practical implications for implementation and potential research areas for further studies.

This research aims to conceptualize and validate the mall service design as a multidimensional construct and then test a conceptual framework by investigating the impact of mall service design on customer mall experience and its subsequent outcomes, that is, intention to revisit and desire to stay in mega shopping malls.

The survey data of 455 shopping visitors in Pakistan were collected using a mall intercept technique and tested through structural equation modeling in AMOS.

The study reveals that service design significantly impacts customer experience and subsequent outcomes. Customer mall experience mediates the relationships between mall service design and the intention to revisit and desire to stay at malls.

Data from a collectivist culture country (Pakistan) were collected. To explore the impact of service design on customer mall experience, researchers should conduct similar studies in individualistic societies like Europe and North America. Additionally, the authors recommend assessing the effect of each dimension of service design on customer experience separately.

The research provides policy guidelines for the owners and operators of mega shopping malls in developing experience-oriented retailing strategies based on service design.

The research conceptualizes and validates the mall service design as a multidimensional construct using the service theater model and empirically tests its relationship with the customer mall experience.