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The simulation of heat conduction inside a heterogeneous material with multiple spatial scales would require extremely fine and ill-conditioned meshes and, therefore, the success of such a numerical implementation would be very unlikely. This is the main reason why this paper aims to calculate an effective thermal conductivity for a multi-scale heterogeneous medium.

The methodology integrates the theory of reiterated homogenization with the finite element method, leading to a renewed calculation algorithm.

The effective thermal conductivity gain of the considered three-scale array relative to the two-scale array has been evaluated for several different values of the global volume fraction. For gains strictly above unity, the results indicate that there is an optimal local volume fraction for a maximum heat conduction gain.

The present approach is formally applicable within the asymptotic limits required by the theory of reiterated homogenization.

It is expected that the present analytical-numerical methodology will be a useful tool to aid interpretation of the gain in effective thermal conductivity experimentally observed with some classes of heterogeneous multi-scale media.

The novel aspect of this paper is the application of the integrated algorithm to calculate numerical bulk effective thermal conductivity values for multi-scale heterogeneous media.

The purpose is to analyze the mechanical behavior of the arterial wall in the degraded region of the arterial wall and to determine the stress distribution, as an important factor for predicting the potential failure mechanisms in the wall. In fact, while the collagen fiber degradation process itself is not modeled, zones with reduced collagen fiber content (corresponding to the degradation process) are assumed. To do so, a local weakness in the media layer is considered by defining representative volume elements (RVEs) with different fiber collagen contents in the degraded area to investigate the mechanical response of the arterial wall.

A three-dimensional (3D) large strain hierarchical multiscale technique, based on the homogenization and genetic algorithm (GA), is utilized to numerically model collagen fiber degradation in a typical artery. Determination of material constants for the ground matrix and collagen fibers in the microscale level is performed by the GA. In order to investigate the mechanical degradation, two types of RVEs with different collagen contents in fibers are considered. Each RVE is divided into two parts of noncollagenous matrix and collagen fiber, and the part of collagen fiber is further divided into matrix and collagen fibrils.

The von Mises stress distributions on the inner and outer surfaces of the artery and the influence of collagen fiber degradation on thinning of the arterial wall in the degraded area are thoroughly studied. Comparing the maximum stress values on outer and inner surfaces in the degraded region shows that the inner surface is under higher stress states, which makes it more prone to failure. Furthermore, due to the weakness of the artery in the degraded area, it is concluded that the collagen fiber degradation considerably reduces the wall thickness in the degraded area, leading to an observable local inflation across the degraded artery.

Considering that little attention has been paid to multiscale numerical modeling of collagen fiber degradation, in this paper a 3D large strain hierarchical multiscale technique based on homogenization and GA methods is presented. Therefore, while the collagen fiber degradation process itself is not modeled in this study, zones with reduced collagen fiber content (corresponding to the degradation process) are assumed.

During running-in, the change in the honed cylinder liner surface alters the performance and efficiency of the piston ring-pack system. The present paper, thus, aims to investigate the surface topography and wear and friction evolution of a cylinder liner surface during the running-in tests on a reciprocating ring–liner tribometer under a mixed lubrication regime. After an initial period of rapid wear termed “running-in wear”, a relatively long-term steady-state surface topography can emerge. A numerical model is developed to predict the frictional performance of a piston ring-pack system at the initial and steady-state stages.

The liner surfaces are produced by slide honing (SH) and plateau honing (PH). The bearing area parameter (Rk family), commonly used in the automotive industry, is used to quantitatively characterize the surface topography change during the running-in process. A wear volume-sensitive surface roughness parameter, Rktot, is used to show the wear evolution.

The experimental results show that a slide-honed surface leads to reduced wear, and it reduces the costly running-in period compared to the plateau-honed surface. The simulation results show that running-in is a beneficial wear process that leads to a reduced friction mean effective pressure at the steady-state.

To simulate the mixed lubrication performance of a ring–liner system with non-Gaussian roughness, a one-dimensional homogenized mixed lubrication model was established. The real surface topography instead of its statistical properties is taken into account.

Weak repeatability is observed in handcrafted keypoints, leading to tracking failures in visual simultaneous localization and mapping (SLAM) systems under challenging scenarios such as illumination change, rapid rotation and large angle of view variation. In contrast, learning-based keypoints exhibit higher repetition but entail considerable computational costs. This paper proposes an innovative algorithm for keypoint extraction, aiming to strike an equilibrium between precision and efficiency. This paper aims to attain accurate, robust and versatile visual localization in scenes of formidable complexity.

SiLK-SLAM initially refines the cutting-edge learning-based extractor, SiLK, and introduces an innovative postprocessing algorithm for keypoint homogenization and operational efficiency. Furthermore, SiLK-SLAM devises a reliable relocalization strategy called PCPnP, leveraging progressive and consistent sampling, thereby bolstering its robustness.

Empirical evaluations conducted on TUM, KITTI and EuRoC data sets substantiate SiLK-SLAM’s superior localization accuracy compared to ORB-SLAM3 and other methods. Compared to ORB-SLAM3, SiLK-SLAM demonstrates an enhancement in localization accuracy even by 70.99%, 87.20% and 85.27% across the three data sets. The relocalization experiments demonstrate SiLK-SLAM’s capability in producing precise and repeatable keypoints, showcasing its robustness in challenging environments.

The SiLK-SLAM achieves exceedingly elevated localization accuracy and resilience in formidable scenarios, holding paramount importance in enhancing the autonomy of robots navigating intricate environments. Code is available at https://github.com/Pepper-FlavoredChewingGum/SiLK-SLAM.

The purpose of this paper is to propose an initial, exploratory and tentative theoretical construct related to the current consumption of landscape as a key symbolic and physical element in territorial representation and evocation, and for the deployment of place branding strategy. It constructs a line of argument to support what shall be referred to as “landscape branding”, that is, the paradigmatic role of landscape in place branding. It is, therefore, of interest to define the value of landscape as a social and cultural construction, which is why the paper awards importance to the specific analysis of their capacity for visual and/or aesthetic evocation within the context of a general branding strategy for geographical spaces.

To develop a sufficient proposal for sustaining “a theory of landscape branding”, the paper deploys a meta-analysis, that is, an extensive review and interpretation of the literature related to visual landscape and place branding, to propose a tentative initial approach to landscape-infused place branding theory.

The relationship existing between landscape images and texts and their possible situating and subsequent interpreting within the context of the political, cultural and economic logics of contemporary society give rise to a renewed analytical framework for cultural geographies (Wylie, 2007). At this point, place branding becomes a recurring argument for the consumption of carefully staged places, representing, to use Scott’s terms (2014), the arrival of a cognitive-cultural capitalism characteristic of post-Fordism.

From a practical perspective, the landscape branding approach provides several benefits. First of all, regardless of the fact that many commentators have argued that logos, slogans and advertising campaigns are relatively ineffective in place branding, practitioners still seem to be focussed on these visual design and advertising tools. The landscape branding approach facilitates an identity-focussed perspective that reconfirms the importance of linking reality with perception and hence reinforces the need to link place branding to policy-making, infrastructure and events.

Landscapes’ imageability facilitates visual storytelling and the creation of attractive symbolic actions (e.g. outdoor events/arts in attractive landscape and augmented reality or landscaping itself). This is the type of imaginative content that people easily share in social media. And, of course, landscape branding reiterated the importance of experience. If policymakers and publics alike understand this considerable symbolic value of landscape, it might convince them to preserve it and, hence, contribute to sustainability and quality of life.

The novelty lies not in the familiar use of visual landscape resources to promote places, but in the carefully orchestrated construction of gazes, angles, representations, narratives and interpretations characteristic of geographic space, which somehow hijack the spontaneous gaze to take it to a certain place. Everything is perfectly premeditated. According to this, the visual landscape represents a critical point as a way of seeing the essence of places through a place branding strategy. In this sense, that place branding which finds in visual landscape a definitive argument for the projection of aspirational places imposes a new “way of seeing” places and landscape based on a highly visual story with which to make a particular place desirable, not only for tourism promotion purposes but also with the intention of capturing talent, infrastructures and investment, among other objectives.

In the United States in 1957 a fresh intellectual excitement emerged within the field of educational administration; high hopes were held for the potential contribution of theory‐oriented research. But in retrospect from 1967 the promise of the decade does not appear to have been fulfilled. Vast Federal funding has proven to be only a mixed blessing. An obsessional preoccupation with “change” has diverted efforts away from basic research, has induced intellectual homogenization within the academic community, and has bombarded administrators with so many exigencies that their planning efforts have been increasingly concentrated upon short‐term perspectives, at best. Never before have politics, education and welfare been commingled so incestuously. Four serious concerns that must now be dealt with in our graduate programs are: the mythology of human motivations; the juggernant of “the Technological Society”; the mythology of change; and the impact of existentialism upon modern man.

This article uses Michel Foucaultʼs theoretical work in examining relations of power within the unique context of street-level bureaucracies (Lipsky, 1980). Through Foucaultʼs techniques of discipline (1995), it analyzes how employees and managers are both objectified and selfproduced within collective bargaining agreements from street level organizations. Findings show that ‘managers’, ‘employees’ and ‘union representatives’ are produced but also constrained within these documents. These collective bargaining agreements also serve to ‘fix’ relationships discursively affirmed as unequal. Constrained by this ‘reality’, any potential for changing relationships between managers and employees through prescriptions that ask street-level bureaucrats to be ‘leaders’; “responsible choice-makers” (Vinzant & Crothers, 1998, p. 154) rather than policy implementers simply carrying out management directives are largely futile.

Although the use of artificial intelligence (AI) has been estimated to be up to 56% in the last decade, the adoption rate of AI for communication activities is still low. The lack of in-depth literature on the subject, and the limited sharing of the experience gained by companies, limits the creation, dissemination and consolidation of understanding in this area. The purpose of this study is to solve the problem of the absence of knowledge, identification, skills development and introduction of an innovation (such as the AI in the business communication) in the company, with the principles of knowledge management (KM).

This study adopts the perspective of KM to provide guidelines for the definition of standards and facilitate the introduction of AI in business communication.

To the best of the authors’ knowledge, this study is the first to relate the perspectives of business communication, AI and KM, activating a virtuous circle between KM and AI. At the centre of the proposed model are people, processes and technologies, based on which KM represents the ideal perspective to define the implementation of AI. This is primarily from the perspective of augmented intelligence, owing to the inability of AI to completely replace humans in the business communication processes, as it lacks, among others, emotional intelligence.

This study finds in KM a possible strategy to solve the problems faced so far in applying AI in business communication processes, providing a model capable of transforming and adapting itself to the context, thanks to the open approach.

This study contributes to the literature by linking the introduction of emerging technology (AI) in a specific process, such as business communication, from the KM perspective.

This paper seeks to answer the basic question of the fate of Sub‐Sahara Africa's development in the context of the emerging marketing system that is anchored on the globalisation orthodoxy.

The paper draws from literature to argue that the emerging globalised marketing system is an advanced stage of colonisation, neo‐colonisation, and re‐colonisation of Sub‐Sahara Africa by the developed economies.

Based on this premise, the paper submits that the new system possesses the potentials to impoverish SSA unless innovative marketing and development paradigms that are Afro‐centric are developed, to tactically respond to the challenges posed by the emerging marketing system that favours the rich countries of the world.

The paper proposes some strategic choices open to Sub‐Sahara Africa for adapting to the new order. Only through this means can the region actively and positively participate in this “juggernaut called globalisation”.

In providing a view of the impacts of globalisation on Sub‐Sahara Africa from within the region, this paper offers an alternative to the largely “developed world” academic discourse.