Search results

The purpose of this study is to investigate the enhancement and suppression of heat transfer for hybrid nanofluids (Cu–Al2O3/water) in a square enclosure containing a thermal-conductive cylinder when the Lorentz force is applied to the hybrid nanofluids.

Since the inner conductive cylinder in present research has a complex geometry, an in-house meshless method, namely, the local radial basis function (LRBF) method, is applied to solve the 2 dimensional (2D) incompressible Navier–Stokes equation in the fluid domain and Fourier heat conduction equation in solid domain. The solid–fluid interface remains the physical continuity of temperature and heat flux. Only the Lorentz force is considered for the presence of the magnetic field. The conjugate natural convection is assumed to be steady, thus only fully developed heat exchange from the nanofluids to solid or vice versa is comprehensively investigated.

It can be concluded that Lorentz force plays a more significant role than hybrid nanofluids in enhancing/suppressing heat transfer when the orientation of magnetic field is the same to the x direction. The thermal conductivity ratio can dramatically change the isotherms and streamlines as well as the mean value of the Nusselt number, resulting in totally different heat transfer phenomena. The included angle of magnetic field also has a significant effect on the heat transfer rate when it changes from horizontal to vertical.

The constant thermo-physical properties of incompressible fluid and the 2D steady flow are considered in this study.

The conjugate MHD natural convection of hybrid nanofluids is numerically investigated by an in-house meshless LRBF method. The enhancement and suppression of heat transfer under the combined influence of the volume fraction of nanoparticles, Hartmann number and the thermal conductivity ratio are comprehensively investigated.

Motivation can serve as the engine that turns intention into action, and, as such, is indispensable in the early phase of the entrepreneurial process, where opportunity recognition and exploitation are key. However, research in this area has so far shed a selective spotlight on specific facets of entrepreneurial motivation, whereas the consideration of basic motives has been widely neglected. Hence, the purpose of this paper is to illuminate the basic motivational foundations of one core aspect of entrepreneurial behavior, namely opportunity recognition.

The study examined how motivation influences the process of recognizing and exploiting entrepreneurial opportunities in a sample of 312 managing directors and managing partners of small and medium-sized enterprises. Opportunity recognition and exploitation were assessed by two different measures: one evaluating the objective number of recognized and realized business opportunities, the other assessing the perceived proficiency in identifying and exploiting entrepreneurial opportunities. Implicit and explicit facets of basic motivation were measured using a comprehensive assessment of human needs.

Findings show that entrepreneurs' achievement motive is an important driver in both the identification and exploitation of opportunity. The power motive affects the perceived ability to exploit business opportunities. Interestingly, the explicit affiliation motive showed an inhibitory effect on the perceived ability of opportunity identification, whereas implicit affiliation motive is affecting the number of recognized and realized business opportunities positively.

This research clearly highlights the preeminence of basic motivational factors in explaining individual early-stage entrepreneurial behavior, making them a prime target for training interventions.

This study examines the effects of incentive compensation and guanxi, a type of informal personal relationship between people, on the objectivity of Chinese internal auditors. Given that the objectivity of internal auditors is essential for promoting financial reporting quality, it is important to investigate the effectiveness of internal audit functions, especially in emerging markets where the corporate governance mechanisms designed to promote objectivity are less mature.

The research employs a 2 × 2 between participants experiment with 116 graduate accounting student participants.

After controlling for internal auditors’ ethicality, we find that close-guanxi between management and internal auditors and incentive compensation in the form of bonuses based upon meeting earnings targets both have the capacity to impair the objectivity of Chinese internal auditors. Participants were more tolerant of management’s attempts to manage earnings when there was close guanxi or bonus compensation. Further, compensation structure only influenced internal auditors’ support of management when guanxi was distant, but when there was close guanxi between internal auditors and management, internal auditors were unlikely to challenge management regardless of the compensation structure.

This study aims to examine the impact of housing construction on single-family housing values and the implications for urban development.

To achieve this objective, the author used the difference-in-difference methodology to examine the effect of multifamily and single-family housing construction on surrounding single-family homes in Stockholm, Sweden. The author analysed data from approximately 480 housing construction projects between 2009 and 2014 and 17,000 single-family detached house transactions between 2005 and 2018.

The research found that multifamily construction projects did not affect the value of surrounding single-family homes, while single-family home construction had a negative impact. The author attributes this result to single-family housing projects typically located in areas with initially positive externalities, while multifamily housing projects are often located on the edge of areas with negative externalities before construction.

The research is limited by its focus on a specific geographic area and time frame, and future research could expand the scope to include other cities and regions and different periods. Additionally, further research could examine the impact of housing construction on other economic factors beyond housing values.

The research has practical implications for urban planners and policymakers. They should consider the potential negative impact of new single-family home construction on existing single-family housing areas while balancing the need for new housing in urban areas. By carefully evaluating construction locations, policymakers can create more sustainable, livable and equitable urban environments that benefit all members of society.

This research paper contributes to the field of housing economics by examining the impact of housing construction on single-family housing values in the context of urban development and climate change mitigation. Using a difference-in-difference methodology, the study provides evidence of the price effect of multifamily and single-family housing construction on surrounding single-family homes, which has important policy implications for urban planners and policymakers. By identifying the negative impact of single-family home construction on surrounding areas and highlighting the need for careful evaluation of construction locations, the research provides valuable insights for creating sustainable, livable and equitable urban environments that benefit all members of society.

There is a broad description of fraud debated by academics around the world. The definition of fraud differs between governments, criminal justice departments and private entities. Some questions can make this study important to explain the concept of fraud. This study aims to define the legal concept of fraud. The concept of a word is important to discuss because it explains the meaning of a word and that could answer the question on Macau scam – a fraud?

The content analysis is the research design of this study. Data were obtained by document analysis, including books, papers, journals, case reports and other records relating to fraud. The methods used to interpret the data for this qualitative research are empirical, deductive and inductive.

This study found that the concept of fraud has not yet been defined. This can give rise to a broad interpretation, depending on the action taken by the parties in the cases. On the basis of the context of the dictionary, fraud may be said to be the same thing as deception. Sometimes, the use of words to convey things that are different from, and even at odds with, the actual sense of words. Whereas, from a legal point of view, fraud still occurs as a matter of fact to be determined. This study showed that Macau scam is a fraud.

The implication of this analysis is for scholars and legal professionals to assess the principle of fraud prior to the accusation.

The purpose of this study is to reveal the research trends in guest experiences of service robots in the hospitality industry.

In this study, a review was carried out on the Web of Science (WoS) database with the assistance of bibliometric analysis techniques. Cluster analysis was also employed for this to group important data to determine the relationships and to visualize the areas in which the studies are concentrated. The thematic content analysis method was used to reveal on which customer experiences and on which methods the focuses were.

On the subject of experiences of service robots, the greatest number of publications was in 2021. In terms of country, China has come to the fore in the distribution of publications. As a result of thematic content analysis, it was determined that the leading factor was the main dimension of emotional experience. In terms of sub-dimensions, social interactions attracted more attention. Most of the studies discussed were not based on any theory. Apart from these, the Technology Acceptance Model (TAM), the Service Quality Model (SERVQUAL) and Perceived Value Theory (PVT) were featured more prominently among other studies.

In this study, only the WoS database was reviewed. In future studies, it would be possible to make contextual comparisons by scanning other databases. In addition to quantitative research designs, social dimensions may be examined in depth following qualitative research methods. Thus, various comparisons can be made on the subject with mixed-method research designs. Experimental research designs can also be applied to where customers have experienced human-robot interactions (HRIs).

In the hospitality industry, it is critical to uncover every dimension of guests' robot acceptance. This study, which presents the current situation on this basis, guides future projections for the development of guest experiences regarding service robots in the hospitality industry.

This paper explores the patterns of the current needs of users' social characteristics in post occupancy evaluation (POE) associated with the environmental performance of green buildings using systematic literature review (SLR). This paper aims to establish a conceptual nexus between environmental performance mandates and the current needs of the users' social characteristics.

This paper adopts a SLR approach designed using Preferred Reporting Items for Systematic Reviews and Meta-Analyses for 21 articles that were selected as qualitative synthesis in this study. The search parameter for the selected articles in this review was limited to publications in three databases, Scopus, Web of Science and Emerald, between January 2016 and January 2023, with the help of qualitative software ATLAS.ti 9© in the presentation of the network codes. The initial literature search has retrieved 99 papers which sequentially excluded 42 papers due to exclusion criteria, and the researcher was left with 57 papers. Out of 57, 14 papers were then removed due to duplication of records found in the Scopus and Web of Science databases, and 43 articles were further screened for qualitative synthesis. A thorough critical appraisal was applied to ensure that only selected papers were included, consensus was achieved among the authors and 22 papers were excluded. The qualitative synthesis has finalized 21 studies, and they are selected as confirmative findings.

Using network codes presentation of ATLAS.ti 9©, the result shows that the social characteristics are influenced by the evaluated building category and the users' category – the stakeholders (owners, designers) and the occupants. New-fangled elements in environmental performance mandates are legitimacy and accessibility. The users’ social characteristics are derived from the category of users, where the stakeholders (designers, owners) are relatively a novel benchmark in meeting the POE objectives towards environmental performance. The least attention on the users’ social characteristics based on the findings shows that image, experiential (conjoint), happiness, interactive behaviour, morale and values are depicted as the social current needs in the environmental performance using POE. However, all stakeholders and the building occupants’ social characteristics must have a confirmative relation to the performance mandates, especially for newly performance mandates elements: legitimacy and accessibility.

The research limits the literature search between the recent January 2016 and January 2023 in Scopus, Web of Science and Emerald databases. Limiting the year of publication to the recent years is important to select and rank relevant scientific papers which encompass the reviewed subject. Other limitations include the selection of papers focusing on the POE approach and environmental performance as the main subject of evaluation. Other evaluation purposes that are not related to environmental objectives are excluded in this study.

The characteristics of the social elements become a challenging subject in meeting the environmental performance needs as they lean more towards intangible elements. The novelty of the findings is drawn from the new pattern and current needs of users' social characteristics in POE for environmental performance.

This study aims to understand if and how European digital innovation hubs (DIHs) filling the role of knowledge brokers (KBs) can support the digital transformation (DX) of small and medium-sized enterprises (SMEs) by triggering open innovation (OI) practices.

After presenting a conceptual model of reference, a survey and a subsequent in-depth interview were conducted to capture evidence from Italian DIHs. These structures were selected for their growing importance, as confirmed by the National Plan for Industry 4.0.

The findings highlight that Italian DIHs act not only as KBs but also as knowledge sources that give rise to a digital imprinting process that is able to shape the DX of SMEs.

Research on knowledge sharing and OI has mainly focused on large firms. The study covers the gaps identified in the literature by considering the role of KBs in enabling SMEs to embrace DX.

In recent years worldwide interest has arisen in developing “child-friendly cities”, but research into this issue has so far not being carried out in Poland. Over the past decades one can observe a visible change which has taken place in the relationship between children and their living environment. In the many Polish cities (like in all industrialized countries) increased road traffic, pollution and crime, fragmentation of urban fabric, reduction of green public areas – resulted in rather ‘non child friendly’ environment. Although a child can play anywhere, carefully planned playgrounds are widely considered as an essential part of children's leisure and education. Today in Warsaw playgrounds could be found in a variety of settings as housing estates, recreation public areas, urban parks, schools, churches, community centres and commercial establishments as restaurants and hotels. But one can notice that demand for outdoor recreation shows signs of stopping, despite the efforts to supply much more sophisticated equipment. The aim of our research was to seek an answer for question how could we create an environment that meets a child's needs? Which factors determine child-friendly environment? In the course of our research project selected children's playgrounds in Warsaw were surveyed, undertaken on specific themes, such as: facilities, safety, pressures for change, popularity of sites, proposed strategy of renewal (with playground users interviewed). We were interested both in the children and their caregivers diversifying preferences, their expectations of outdoor recreation infrastructure and management improvements. As at present in Warsaw live as much as 5 528 disabled children therefore emphasis has been also placed on disabled children, their everyday access possibilities to public play space.