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The purpose of this conceptual chapter is to analyze the current state of the astructural bias in symbolic interactionism as it relates to three inter-related processes over time: (1) the formalization of critiques of symbolic interactionism as ahistorical, astructural, and acritical perspectives; (2) an ahistorical understanding of early expressions of the disjuncture between symbolic interactionism and more widely accepted forms of sociological theorizing; and (3) persistent and widespread inattentiveness to past and present evidence-based arguments that address the argument regarding symbolic interactionism as an astructural, ahistorical, and acritical sociological perspective. The argument frames the historical development of the astructural bias concept in an historically and socially conditioned way, from its emergence through its rejection and ultimately including conclusions about contemporary state of the astructural bias as evidenced in the symbolic interactionist literatures of the last couple of decades. The analysis and argument concludes that the contemporary result of these intertwined historical and social conditioning processes is that the astructural bias myth has been made real in practice, and that the reification of the myth of an astructural bias has had the ruinous effect of virtually eradicating a vital tradition in the interactionist perspective which extends back to the earliest formulations of the perspective. As a result, a handful of suggestions that serve to aid in reclaiming the unorthodox structuralism of symbolic interactionism and the related interactionist study of social organization are provided in the conclusion.

This study aims to focus on the surface curvature, jet to target spacing and jet Reynolds number effects on the heat transfer and fluid flow characteristics of a slot jet impinging on a confined concave target surface at constant jet to target spacing.

Numerical simulations are used in this research. Jet to target spacing, H/B is varying from 1.0 to 2.2, B is the slot width. The jet Reynolds number, Rej, varies from 8,000 to 40,000, and the surface curvature, R2/B, varies from 4 to 20. Results of the target surface heat transfer, flow parameters and fluid flow in the concave channel are performed.

It is found that an obvious backflow occurs near the upper wall. Both the local and averaged Nusselt numbers considered in the defined region respond positively to the Rej. The surface curvature plays a positive role in increasing the averaged Nusselt number for smaller surface curvature (4-15) but affects little as the surface curvature is large enough (> 15). The thermal performance is larger for smaller surface curvature and changes little as the surface curvature is larger than 15. The jet to target spacing shows a negative effect in heat transfer enhancement and thermal performance.

The surface curvature effects are conducted by verifying the concave surface with constant jet size. The flow characteristics are first obtained for the confined impingement cases. Then confined and unconfined slot jet impingements are compared. An ineffective point for surface curvature effects on heat transfer and thermal performance is obtained.

This paper seeks to conduct a numerical study to investigate heat transfer in turbulent, unconfined, submerged, and inclined impinging jet discharged from a slot nozzle, utilising finite volume code FLUENT.

Two re‐normalisation group k‐ε and the basic Reynolds stress models by using enhanced wall treatment for near wall turbulent modelling were applied and the local Nusselt numbers were compared with experiments. The enhanced wall treatment solves the fully turbulent region and viscous sublayer by considering a single blended function of both layers.

In inclined impinging jet by movement of stagnation point to the uphill side of the impinging plate, the location of the maximum Nusselt number moves to the uphill side of the plate. However, this movement increases by increasing of H/D and by decreasing of Reynolds number and inclination angle. For a flat plate impinging jet, the results were found to be less than 8 per cent different and for inclined impinging jet, more sensitive to H/D, 5‐20 per cent different in comparison with experiments. In addition, the flow streamlines were consistent with location of the heat transfer peak on the impinging surface.

Reynolds numbers in range of 4,000‐16,000, the ratio of nozzle height to hydraulic diameter of the nozzle (H/D) in range of 4‐10, and inclination angle of air jet and plate in range of 40‐90° were considered.

A unique achievement of this study in comparison with experimental data was locating the exact peak of the local Nusselt number on impinging plate by change of Reynolds number, H/D, and inclination angle.

The present study scrutinizes the relative performance of various near-wall treatments coupled with two-equation RANS models to explore the turbulence transport mechanism in terms of the kinetic energy budget in a plane wall jet and the significance of the near-wall molecular and turbulent shear, to select the best combination among the models which reveals wall jet characteristics most efficiently.

A two-dimensional steady incompressible plane wall jet in a quiescent surrounding is simulated using ANSYS-Fluent solver. Three near-wall treatments, namely the Standard Wall Function (SWF), Enhanced Wall Treatment (EWT) and Menter-Lechner (ML) treatment coupled with Realisable, RNG and Standard k-e models and also the Standard and Shear-Stress Transport (SST) k-ω models are employed for this investigation.

The ML treatment slightly overestimated the budget components on an outer scale, whereas the k-ω models strikingly underestimated them. In the buffer layer at the inner scale, the SWF highly over-predicts turbulent production and dissipation and k-ω models over-predict dissipation. Appreciably accurate inner and outer scale k-budgets are observed with the EWT schemes. With a sufficiently resolved near-wall mesh, the Realisable model with EWT exhibits the mean flow, turbulence characteristics and turbulence energy transport even better than the SST k-ω model.

Three distinct near-wall strategies are chosen for comparative performance analysis, focusing not only on the mean flow and turbulence characteristics but the turbulence energy budget as well, for finding the best combination, having potential as a viable and low-cost alternative to LES and DNS for wall jet simulation in industrial application.

A history of the intellectual origins of the debate over the astructural bias is presented. The chapter summarizes both the emergent bias thesis and the charge of an astructural bias. The major works within this debate are reviewed. It has been found that the astructural bias still exists within the work of contemporary interactionists. The conclusion is that if interactionists want their work to be taken seriously, then they must seriously confront the distinguishing concept in sociology: social structure.

Performance of various k‐ε models on turbulent forced convection in a channel with periodic ribs is assessed.

The influence of the Yap correction and the non‐linear stress‐strain relation on the predictions of mean‐flow, turbulence quantities and local heat transfer rate is examined. The effect of thermal boundary conditions on the heat transfer predictions is investigated by employing both the prescribed heat flux approach and the conjugate heat transfer approach.

It was found that the inclusion of the Yap correction in the ε‐equation significantly improves the predictions of mean velocity and wall heat transfer for both high‐Reynolds number and low‐Reynolds number k‐ε models in the present ribbed channel flow with massive flow separation. The employment of the non‐linear stress‐strain relation only marginally improves the predictions of turbulence quantities: the turbulence anisotropy is reproduced although the level of turbulence intensity is still too low. In general, the conjugate heat transfer approach predicts better average Nusselt number than the prescribed heat flux approach. However, both approaches under‐predict the experimental value by about 28‐33 percent when the low‐Reynolds number k‐ε model of Lien and Leschziner (1999) with the Yap term is adopted.

Thorough numerical treatments of the thermal boundary conditions at the solid‐liquid interface, and detailed periodic condition in the periodic regime, were given in the paper to benefit researchers interested in solving similar problems.

The effectiveness of strategic planning has been subject to much criticism lately. But R.J. Reynolds Industries is one successful company that attributes its substantial profits to careful planning. With the merger of Nabisco Brands into RJR, the company will become the largest consumer products company in the United States.

This paper aims to outline the fundamental assumptions regarding the laddering methodology (Reynolds and Gutman), examine how some “hard” laddering approaches meet or violate these assumptions, provide a review and comparison of a series of studies using “soft” and “hard” laddering approaches to examine the hierarchical structure of means‐end theory, and assess if the discrepant conclusions from this series of studies may be attributed to violations of the fundamental assumptions of the laddering methodology.

A series of published empirical works using “hard” and “soft” laddering approaches, which aim to examine the hierarchical structure of means‐end theory (Gutman), are reviewed and compared to integrate research findings and to examine discrepancies. Discrepant conclusions, which appear to be attributable to violations of the assumptions underlying the laddering methodology, are explored through a reanalysis and reclassification of the content codes.

The paper validates the case for laddering and the care needed to gauge how conclusions can be affected when violations of fundamental assumptions of the laddering methodology occur.

Means‐end chain research and, more specifically, the laddering methodology are in need of investigations that assess the importance of its underlying assumptions. Additional work validating both the “hard” and “soft” laddering approaches is also needed.

Results of means‐end research are more interpretable and less ambiguous when the fundamental assumptions of the laddering methodology are met. In practice, means‐end theory benefits managers by providing a useful structure to aid in the interpretation of laddering data.

This paper outlines the fundamental assumptions regarding the laddering methodology to provide methodological guidelines for laddering researchers. This paper also reviews the academic literature examining the hierarchical structure of means‐end theory and explores how violations of the fundamental assumptions of the laddering methodology may impact research findings.