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A fairly consistent finding in research on trust in physicians is that racial and ethnic minorities cite lower levels than whites. This research typically samples only health care users, which limits our understanding of what underlies distrust. It remains unclear whether the distrust is generalized, which is distrust that is unrelated to using health care regularly or recently.

Using data from the Health Information National Trends Survey, multivariable logistic regressions assessed whether racial and ethnic differences in distrust (1) are equivalent among health care users and non-users; (2) regardless of respondents’ health and socio-economic status; and (3) manifest in other health information sources.

Racial and ethnic minorities are less likely than whites to trust physicians as health information sources. These racial and ethnic differences are equivalent among health care users and non-users, regardless of respondents’ health and socio-economic status. The racial and ethnic patterns do not manifest when predicting trust in other health information sources (Internet, family or friends, government health agencies, charitable organizations).

Data are derived from a cross-sectional survey, which makes it difficult to account comprehensively for self-selection into being a health care user. Despite the limitations, this research suggests that racial and ethnic minorities possess a generalized distrust in physicians, necessitating interventions that move beyond improving health care experiences.

Many researchers have surmised that a generalized distrust in physicians exists among racial and ethnic minorities. This chapter is the first to explicitly examine the existence of such distrust.

The research aims to empirically investigate the determinants of the breadth of the corporate social disclosure (CSD).

The study adopts a multi-perspective approach, referring to different theoretical frameworks on CSD, such as the legitimacy theory, the stakeholder theory, the agency model, the asymmetric information theory, and the institutional perspective.

The empirical research is based on the sustainability reports of 80 companies in which investments were made by European socially responsible funds (SRFs) listed on the Morningstar platform during the years 2009–2008.

The theoretical hypotheses are tested by a univariate and multivariate analysis.

The breadth of the CSD depends on multiple factors, both external and internal, such as the country of origin, the industry reputation, the firm size, the frequency of the SRFs participation, the corporate social performance.

Limits inherent in this type of research are the comparability of the CSR reports and the systematization of the categories of content to be analyzed.

The chapter identifies several factors that lead to a greater completeness of the CSD, exploiting the capacity of the social reporting to trigger benefits for the firms such as a stronger social legitimacy and the reduction of asymmetric information.

The research supports the investigation of the levers of CSD to meet the demand for a broader accountability.

The reference to firms in which SRFs participated allows to focus on companies ascertained as socially responsible in accordance with a “certification function” of these funds. Findings support an approach which is not one-sided, thus enabling to look at the determinants of the CSD through different theoretical perspectives.

The authors explore the nature of commitment, job satisfaction and job characteristics, and the nature of the interrelationships among these variables concerning expatriate employees in Saudi Arabia. An examination of a sample of 504 expatriate employees reveals that these employees are, by and large, indifferent with respect to their perceptions of commitment, job satisfaction, and job characteristics. In addition, the results provide strong support for (1) the influence of job satisfaction on commitment, (2) the influence of job variety on commitment, and (3) the influence of job autonomy, identity, and feedback on job satisfaction.

The authors explore turnover tendencies among expatriate employees in Saudi Arabia They: (1) discuss the novelty of expatriates in Saudi Arabia; (2) review the literature on employee turnover tendency and its correlates—job satisfaction and employee characteristics; (3) hypothesize a negative relationship between extrinsic job satisfaction and expatriate turnover tendencies, a negative relationship between general job satisfaction and expatriate turnover tendencies, no relationship between intrinsic job satisfaction and expatriate turnover tendencies, and no relationship between expatriate characteristics and expatriate turnover tendencies, and (4) empirically lest the hypotheses with a sample of expatriate employees. Results provide strong support for most of the hypotheses except “pay,” one of the extrinsic job satisfaction variables, and “job feedback,” one of the intrinsic job satisfaction variables.

This article reports the results of a survey which compared Saudi and expatriate managers on organisational commitment, job satisfaction and work values. Saudi and expatriate managers were found to be similar in their commitment to their organisations and in their work values; but some difference was observed in the job satisfaction levels. Implications of these findings are discussed and directions for future research are offered.

The effect of inclination on laminar natural convection in a square cavity is studied numerically for inclination angles ranging from 40° to 160°, Rayleigh numbers between 10³ and 10⁶ and Prandtl numbers from 0.02 to 4,000. Contours of stream functions and temperature are presented in order to provide a new insight and a better understanding of the flow and heat transfer characteristics in a square cavity. Finds computed local and mean Nusselt numbers at the hot wall in satisfactory agreement with experimental and other numerical results. Finds the mean heat flux at the hot wall as well as the distribution of the local heat flux along the heated wall are found to depend on the inclination angle, the Rayleigh number and the Prandtl number. Such a dependence is significant for angles greater than 90°, while for smaller angles the effect of the inclination angle on the Nusselt‐Rayleigh correlation is weaker.

The purpose of this paper is to assess the Boussinesq approach for a wide range of Ra (10 × 6 to 10 × 11) in two-dimensional (square cavity) and three-dimensional (cubic cavity) problems for air- and liquid-filled domains.

The thermal behavior in “differentially heated cavities” filled with air (low and medium Rayleigh) and water (high Rayleigh) is solved using computational fluid dynamics (CFDs) (OpenFOAM) with a non-compressible (Boussinesq) and compressible approach (real water properties from the IAPWS database).

The results from the wide range of Rayleigh numbers allowed for the establishment of the limitation of the Boussinesq approach in problems where the fluid has significant density changes within the operation temperature range and especially when the dependence of density with temperature is not linear. For these cases, the symmetry behavior predicted by Boussinesq is far from the compressible results, thus inducing a transient heat imbalance and leading to a higher mean temperature.

The main limitation of the present research can be found in the shortage of experimental data for very high Rayleigh problems.

Practical implications of the current research could be use of the Boussinesq approach by carefully observing its limitations, especially for sensible problems such as the study of pressure vessels, nuclear reactors, etc.

The originality of this paper lies in addressing the limitations of the Boussinesq approach for high Rayleigh water systems. This fluid is commonly used in numerous industrial equipment. This work presents valuable conclusions about the limitations of the currently used models to carry out industrial simulations.

The purpose of the paper is to obtain finite element method (FEM) solution of steady, laminar, natural convection flow in inclined enclosures in the presence of an oblique magnetic field. The momentum equations include the magnetic effect, and the induced magnetic field due to the motion of the electrically conducting fluid is neglected. Quadratic triangular elements are used to ensure accurate approximation for second order derivatives of stream function appearing in the vorticity equation.

Governing equations in terms of stream function and vorticity are solved by FEM using quadratic triangular elements. Vorticity boundary conditions are obtained through Taylor series expansion of stream function equation by using more interior stream function values to improve the accuracy. Isothermally heated or cooled and/or adiabatic conditions for the temperature are imposed. Results are obtained for Rayleigh number values and Hartmann number values up to 1000000 and 100, respectively.

It is observed that streamlines form a thin boundary layer close to the heated walls as Ha increases. The same effect is seen in the vorticity contours, and isotherms are not affected much. As Ra increases streamlines are deformed moving from the heated walls through cooled walls. Vorticity starts to develop boundary layers close to heated and adjacent walls. Isotherms are pushed towards the sinusoidally heated wall whereas in the case of linearly heated left and bottom walls they expand towards cooled part of the cavity as Ra increases.

The application of FEM with quadratic elements for solving natural convection flow problem under the effect of a magnetic field is new in the sense that the results are obtained for large values of Rayleigh and Hartmann numbers.

The purpose of this paper is to propose an effective numerical approach for solving the natural convection in a two-dimensional square enclosure by using the single relaxation time-Bhatnagar, Gross and Krook (SRT-BGK) model (D2Q9) and lattice Boltzmann method (LBM).

Navier–Stroke equation is replaced by lattice Boltzmann method, and the numerical approach was simulated using LBM. LBM is a linear equation so, it reduces the computational time. The governing equations are solved using the SRT-BGK model. To achieve better numerical stability and accuracy, the momentum and energy equations are solved using two-dimensional nine-directional (D2Q9) lattice arrangement.

The results are presented at different convection mechanism with constant Prandtl number = 0.71, and the result is validated with reported literature. Numerical investigation is performed and accurate results are obtained; the range of Pr = 0.71, various Rayleigh number, phase change, periodicity parameter and amplitude ratio with three different blockage ratios. The present study is performed using LBM.

To extend this work, the influence of natural convection, various selections of Prandtl number and Rayleigh number, periodicity and the effect of aspect ratio with mounted number of blockages could be included.

This research article will be useful for the study of fluid flow and heat transfer in hot and cold fluid interaction over the solid object. Like gear hardening with various sizes of gear blocks, material processing with hot and cold fluid interactions inside the furnace wall, solar panels high and low density fluid variation, indoor hot and cold fluid thermal environments, inside nuclear reactors heat and heavy water fluid interaction, cooling of electronic equipments and various chemical engineering applications.

This paper will be useful for studying fluid flow and heat transfer within a square enclosure, and it gives practical information in engineering and heat transfer applications.

The present work is the first to investigate using LBM for selected parameters to apply a natural convection with imposed sinusoidal wave for different convection mechanisms.