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In this work, a new two-phase version of the finite element-based Artificial Compressibility (AC) Characteristic-Based Split (CBS) algorithm is developed and applied for the first time to heat and mass transfer phenomena in porous media with associated phase change. The purpose of this study is to provide an alternative for the theoretical analysis and numerical simulation of multiphase transport phenomena in porous media. Traditionally, the more complex Separate Flow Model was used in which the vapour and liquid phases were considered as distinct fluids and mathematically described by the conservation laws for each phase separately, resulting in a large number of governing equations.

Even though the adopted mathematical model presents analogies with the conventional multicomponent mixture flow model, it is characterized by a considerable reduction in the number of the differential equations for the primary variables. The fixed-grid numerical formulation can be applied to the resolution of general problems that may simultaneously include a superheated vapour region, a two-phase zone and a sub-cooled liquid region in a single physical domain with irregular and moving phase interfaces in between. The local thermal non-equilibrium model is introduced to consider the heat exchange between fluid and solid within the porous matrix.

The numerical model is verified considering the transport phenomena in a homogenous and isotropic porous medium in which water is injected from one side and heated from the other side, where it leaves the computational domain in a superheated vapour state. Dominant forces are represented by capillary interactions and two-phase heat conduction. The obtained results have been compared with the numerical data available in the scientific literature.

The present algorithm provides a powerful routine tool for the numerical modelling of complex two-phase transport processes in porous media.

For the first time, the stabilized AC-CBS scheme is applied to the resolution of compressible viscous flow transport in porous materials with associated phase change. A properly stabilized matrix inversion-free procedure employs an adaptive local time step that allows acceleration of the solution process even in the presence of large source terms and low diffusion coefficients values (near the phase change point).

The purpose of this paper is to focus on the numerical analysis of transient free convection heat transfer in partially porous cylindrical domains. The authors analyze the dependence of velocity and temperature fields on the geometry, by analyzing transient flow behavior for different values of cavity aspect ratio and radii ratio; both inner and outer radius are assumed variable in order to not change the difference r_o-r_i. Moreover, several Darcy numbers have been considered.

A dual time-stepping procedure based on the transient artificial compressibility version of the characteristic-based split algorithm has been adopted in order to solve the transient equations of the generalized model for heat and fluid flow through porous media. The present model has been validated against experimental data available in the scientific literature for two different problems, steady-state free convection in a porous annulus and transient natural convection in a porous cylinder, showing an excellent agreement.

For vertically divided half porous cavities, with Rayleigh numbers equal to 3.4×106 for the 4:1 cavity and 3.4×105 for the 8:1 cavity, the numerical results show that transient oscillations tend to disappear in presence of cylindrical geometry, differently from what happens for rectangular one. The magnitude of this phenomenon increases with radii ratio; the porous layer also affects the stability of velocity and temperature fields, as oscillations tend to decrease in presence of a porous matrix with lower value of the Darcy number.

A proper analysis of partially porous annular cavities is fundamental for the correct estimation of Nusselt numbers, as the formulas provided for rectangular domains are not able to describe these problems.

The proposed model represents a useful tool for the study of transient natural convection problems in porous and partially porous cylindrical and annular cavities, typical of many engineering applications. Moreover, a fully explicit scheme reduces the computational costs and ensures flexibility.

This is the first time that a fully explicit finite element scheme is employed for the solution of transient natural convection in partially porous tall annular cavities.

This paper reports a study of recidivism rates following psychodynamic psychotherapy amongst male offenders with intellectual disabilities. The recipients were 18 men who had been diverted to the clinical psychology service for adults with intellectual disabilities from the criminal justice system. Thirteen participated in treatment and five refused it during assessment. Participants were followed up for 4 years after treatment. Of the 13 who completed treatment two re‐offended. All five of the men who refused treatments re‐offended. In view of the preliminary nature of these findings they are discussed in relation to methodological issues and future research.

To improve our understanding of the impact of organizational learning and knowledge on competitive advantage, we propose a framework that includes the constructs of data, information, knowledge, and wisdom. Each of these constructs is then associated with a different type of learning. We further argue that wisdom is an important, albeit missing, construct in the knowledge‐based theory of the firm. A key to organizational wisdom is judgement and decision making, which requires an understanding of the complexity of a situation, but also requires the ability to make sense and simplify so that action can be taken. Three important drivers for the development of organizational wisdom are experience, a passion to learn, and spirituality. Processes for acquiring organizational wisdom such as transformational leadership, organizational culture and knowledge transfer are also discussed.

Graduates are expected to possess the knowledge and right skillset, commonly known as graduate attributes, which they need to become employable and work-ready. This study describes the approaches that were employed by an academic institution in developing an assessment framework for measuring the student achievement of the graduate attributes and learning outcomes.

It used thematic analysis in analyzing the 43 audit reports of higher educational institutions (HEIs) in Oman which have undergone the regional quality audit as well as the outcomes of the institutional standards assessment.

The analysis exposed the critical issues necessary for embedding graduate attributes and learning outcomes in higher education. Likewise, the study revealed that the assessment of the graduate attributes (GAs) and learning outcomes (LOs) is the area that garnered the most number of comments from the audit panel, and 69 per cent of the HEIs are still problematic in this area. Moreover, most of the HEIs in Oman lack the mechanisms to assess student learning as evidenced in the regional accreditation outcomes. Only 43.8 per cent of the HEIs, which have undergone the institutional accreditation process, have garnered a Met Rating in the Graduate Attributes and Student Learning Outcome criterion. Hence, this study presupposes its high relevance and usefulness to the work in this area, drawing from the experience of an HEI in Oman.

This study will present the relevant and meaningful content, especially good practices and potential gaps that inform HEIs regarding the current trends, policies, and practices relevant to the assessment of graduate attributes and learning outcomes in higher education.

This study extends the limited literature on the assessment of graduate attributes and learning outcomes, especially among the HEIs in Oman.

Effective procurement of infrastructure is linked to the attainment of the sustainable development goals set by the United Nations. While the capacity of organisations is generally thought to be related to organisational performance, there is a lack of empirical insights concerning the contribution of procurement capacity of public organisations towards the attainment of procurement objectives in infrastructure procurement. Thus, it is unclear which aspects of the capacity of public procurement organisations contribute the most to the attainment of procurement objectives in the procurement of infrastructure. This research sought to address this gap.

The research used a survey of public procurement professionals which yielded 590 responses.

Exploratory factor analysis of 23 organisational capacity items revealed three components of organisational procurement capacity: “management of the procurement process”; “human and physical resources”; and “financial resources and management”. Multiple regression modelling of the relationship between the components and the attainment of 12 procurement objectives further reveals that there is a significant positive relationship between the three components and all the objectives. However, “management of the procurement process” emerged as the greatest contributor to the attainment of seven objectives, whereas “human and physical resources”, and “financial resources and management” were the greatest contributor to the attainment of one objective and four objectives, respectively.

The study provides strong empirical justification for investment in the development of procurement capacity of public agencies involved in procurement of infrastructure. Furthermore, procurement capacity development of specific capacity components can be prioritised based on the relative contribution of capacity components to the attainment of desired procurement objectives. This should be useful to government policymakers as well as multilateral organisations that fund infrastructure and procurement reforms in various countries.

Accurate presentation of the rock microstructure is critical to the grain-scale analysis of rock deformation and failure in numerical modelling. 3D granite microstructure modelling has only been used in limited studies with the mineral pattern often remaining poorly constructed. In this study, the authors developed a new approach for generating 2D and 3D granite microstructure models from a 2D image by combining a heterogeneous material reconstruction method (simulated annealing method) with Voronoi tessellation.

More specifically, the stochastic information in the 2D image is first extracted using the two-point correlation function (TPCF). Then an initial 2D or 3D Voronoi diagram with a random distribution of the minerals is generated and optimised using a simulated annealing method until the corresponding TPCF is consistent with that in the 2D image. The generated microstructure model accurately inherits the stochastic information (e.g. volume fraction and mineral pattern) from the 2D image. Lastly, the authors compared the topological characteristics and mechanical properties of the 2D and 3D reconstructed microstructure models with the model obtained by direct mapping from the 2D image of a real rock sample.

The good agreements between the mapped and reconstructed models indicate the accuracy of the reconstructed microstructure models on topological characteristics and mechanical properties.

The newly developed reconstruction method successfully transfers the mineral pattern from a granite sample into the 2D and 3D Voronoi-based microstructure models ready for use in grain-scale modelling.

The purpose of this paper is to examine the impact and success of a business incubation project on its participants. The study aims to consider the impact of the project in terms of developing and supporting entrepreneurial activity within Wales. It seeks to build on and enhance existing business incubation literature and contribute to the field by identifying “good” practice and considers the measurement of success within such projects.

This study employs an individual case study methodology which evaluates all aspects of the Graduate Teleworking Initiative (GTi) project. A range of qualitative and quantitative methods is utilised to capture the views of aspiring entrepreneurs. In addition the progress of entrepreneurs is compared with “distance travelled” methodologies developed by other EU programmes, using the experiences of GTi businesses as individual case histories. In addition, this paper looks at additional ways to measure the success of this type of project, based on a study of the current academic literature and work currently being undertaken with funding agencies in Wales in respect of economic regeneration. The case study method is recognised as the most effective research strategy to capture the “rich” experience of complex projects.

The study finds that, if incubation facilities are to receive continuing support, the measurement of success needs to be broader than a set of statistical outputs. The academic literature queries whether business incubation works, and invites us to decide if the end result is of value or not. This paper considers additional ways to measure the success of this type of project. Applications for public funding in support of business incubators as part of an overall economic regeneration strategy should be able to provide a wider evaluation of effectiveness, and this paper seeks to develop a model to this purpose, to assist the ongoing development of incubator facilities in Wales.

This study will be of interest to business incubation providers and entrepreneurial researchers in identifying valid and achievable success measures and should inform developments in this field.

The paper provides a unique insight into a successful business incubation project and identifies the key to its on going success. Furthermore, the study identifies generic measures of success for a typical business incubation project based on the GTi experience and a detailed investigation of alternative business incubators.

This study presents findings on the spatial distribution of vandalism and the nature and extent of vandalism within Manenberg, a residential township in the Western Cape province of South Africa. The focus of the study is on the impact of the design of the built environment on vandalism. Design factors of the built environment, most notably, the distribution and type of buildings and open spaces are examined as possible influences on the incidence of vandalism, and population density, type and size of household, and property ownership are considered as relevant demographic variables. The methodology adopted for the study involves the collection and interpretation of official police statistics of vandalism over a seven‐year period (1992‐1999). The statistical data are combined with the 1996 population census for the area. The statistical data are examined and presented in three focus areas: the frequency of vandalism, the nature of vandalism, and the location of vandalism. The study then examines the association between the design of the built environment and vandalism levels. In conclusion, the likely cost implications of vandalism are discussed.

Although leadership and organizational scholars have suggested that the virtue of wisdom may promote outstanding leadership behavior, this proposition has rarely been empirically tested. The purpose of this paper is to investigate the relationships between transformational leadership, narcissism, and five dimensions of wisdom as conceptualized by the well-established Berlin wisdom paradigm. General mental ability and emotional intelligence were considered relevant control variables.

Interview, test, and questionnaire data were obtained from 77 employees of a high school and from two or three colleagues of each employee. Data were analyzed using hierarchical regression analyses.

After controlling for general mental ability and emotional intelligence, narcissism and the wisdom dimension relativism of values and life priorities were negatively related to transformational leadership, and the wisdom dimension recognition and management of uncertainty was positively related to transformational leadership. The other three wisdom dimensions, rich factual knowledge about life, rich procedural knowledge about life, and lifespan contextualism, were not significantly related to transformational leadership.

Limitations to be addressed in future studies include the cross-sectional design and the relatively small and specialized sample.

Tentative implications for leadership training and development are outlined.

This multi-method and multi-source study represents the first empirical investigation that examines links between well-established wisdom and leadership constructs in the work context.