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This paper aims to evaluate the mechanical behaviour of polycarbonate/acrylonitrile butadiene styrene (PC/ABS) filaments for fusion filament fabrication (FFF). PC/ABS have emerged as a promising material for FFF due to their excellent mechanical properties. However, the optimal processing conditions and the effect of the blending ratio on the mechanical properties of the resulting workpieces are still unclear.

A statistical factorial matrix was designed, including infill pattern, printing speed, nozzle size, layer height and printing temperature as factors (with three levels). A total of 810 workpieces were printed using PC/ABS blends filament with the FFF. The workpieces’ finishing and mass were evaluated. Tensile tests were performed. Analysis of variance was performed to determine the main effects of the processing conditions on the mechanical properties.

The results showed that the PC/ABS (70/30) exhibited higher tensile. Tensile rupture corresponded to 30% of the tensile strength. The infill pattern showed the highest contribution to the responses. The concentric pattern showed higher tensile strength. Tensile strength and mass ratio demonstrated the influence of mass on tensile strength. The influence of printing parameters on deformation depended on the blend proportions. Higher printing speed and lower layer height provided better quality workpieces.

This study has implications for the design and manufacturing of three-dimensional printed parts using PC/ABS filaments. An extensive experimental matrix was applied, aiming at a complete understanding of mechanical behavior, considering the main printing parameters and combinations not explored by literature.

Laser powder bed fusion (LPBF) in-situ alloying is a recently developed technology that provides a facile approach to optimizing the microstructural and compositional characteristics of the components for high performance goals. However, the complex mass and heat transfer behavior of the molten pool results in an inhomogeneous composition distribution within the samples fabricated by LPBF in-situ alloying. The study aims to investigate the heat and mass transfer behavior of an in-situ alloyed molten pool by developing a three-dimensional transient thermal-flow model that couples the metallurgical behavior of the alloy, thereby revealing the formation mechanism of composition inhomogeneity.

A multispecies multiphase computational fluid dynamic model was developed with thermodynamic factors derived from the phase diagram of the selected alloy system. The characteristics of the Al/Cu powder bed in-situ alloying process were investigated as a benchmark. The metallurgical behaviors including powder melting, thermal-flow, element transfer and solidification were investigated.

The Peclet number indicates that the mass transfer in the molten pool is dominated by convection. The large variation in material properties and temperature results in the presence of partially melted Cu-powder and pre-solidified particles in the molten pool, which further hinder the convection mixing. The study of simulation and experiment indicates that optimizing the laser energy input is beneficial for element homogenization. The effective time and driving force of the convection stirring can be improved by increasing the volume energy density.

This study provides an in-depth understanding of the formation mechanism of composition inhomogeneity in alloy fabricated by LPBF in-situ alloying.

This case is the second of a three-part series that follows the managerial, strategic, and communications decisions of the Swachh Bharat Mission (SBM) or Clean India Mission, the flagship programme of the Government of India to eliminate the practice of open defecation (i.e., not using a toilet) from 2014 to 2019. As of 2014, 550 million people in India practiced open defecation. This problem posed a massive public health hazard and economic drag for the country as well as a threat to global health. Written from an insider's perspective, the cases centre on the decisions made by a new Secretary of India's Ministry of Drinking Water and Sanitation, who was hired to manage SBM, and the team he assembled. Case B discusses the start-up challenges for SBM, including implementation in India's complex federal system, workplace culture, and the deep-rooted behaviour of open defecation in rural India and the managerial and communication strategies formulated to address them. The case concludes by framing the difficulties with slow-moving states and monitoring rigour that the leadership SBM, with a new team, strategic focus, and early momentum, faced as the mission entered its final two years.

This study aims to analyze the relationship of mass versus niche brand coolness on consumers’ brand loyalty, mediated by attitude toward the brand and moderated by conspicuous consumption; test the moderating role of conspicuous consumption and the mediating role of attitude between mass versus niche cool brand and brand love; and analyze whether results are stable when categorizing the luxury brands as niche versus mass cool brand.

Study 1 uses a panel sample to establish the mediating role of attitude toward the brand between perceptions of brand coolness and brand loyalty. Study 2 is an experimental survey study to describe the moderating role of conspicuous consumption on the relationship between mass/niche brand coolness and brand love and between mass/niche coolness and attitude toward the brand. Study 3 is a conjoint analysis that delineates the distinct factors that consumers attribute to mass versus niche cool brands in the luxury fashion arena.

This study demonstrates that attitudes mediate the relationship between brand coolness and brand loyalty. Conspicuous consumption only moderates the relationship between brand coolness and attitudes in the case of niche cool brands. In a realistic field experiment, the authors confirm the mediating impact of attitude and the moderating influence of conspicuous consumption. The authors also attempt to provide coolness dimensions that tend to be more associated with mass luxury brands and those more related to niche luxury brands.

These studies provide a fresh look at the concept of brand coolness, mass and niche cool brands in the context of luxury fashion brands.

Esta investigación pretende (1) analizar la relación entre el atractivo de las marcas de nicho y de masas y la lealtad a la marca de los consumidores, mediada por la actitud hacia la marca y moderada por el consumo conspicuo, (2) comprobar el papel moderador del consumo conspicuo y el papel mediador de la actitud entre el atractivo de las marcas de nicho y de masas y el amor por la marca y (3) analizar si los resultados son estables al categorizar las marcas de lujo como de nicho o de masas.

Demostramos que las actitudes median en la relación entre el “coolness” y la fidelidad a una marca. El consumo ostentoso sólo modera la relación entre el “coolness” de la marca y las actitudes en el caso de las marcas “cool” de nicho. En un experimento de campo realista, confirmamos el efecto mediador de la actitud y la influencia moderadora del consumo ostentoso. También intentamos proporcionar las dimensiones del coolness que tienden a asociarse más con las marcas de lujo de masas y las que están más relacionadas con las marcas de lujo de nicho.

El primer estudio utiliza una muestra de panel para establecer el papel mediador de la actitud hacia la marca entre las percepciones del atractivo de la marca y la fidelidad a la misma. El segundo es un estudio experimental que describe el papel moderador del consumo ostentoso en la relación entre el atractivo de las marcas de masas/nicho y el amor por la marca, y entre el atractivo de las marcas de masas/nicho y la actitud hacia la marca. El último estudio es un análisis conjunto que delinea los distintos factores que los consumidores atribuyen a las marcas de moda de masas frente a las de nicho en el ámbito de la moda de lujo.

Estos estudios aportan una nueva mirada al concepto de “coolness” de marca, marcas “cool” de masas y marcas “cool” de nicho en el contexto de las marcas de moda de lujo.

本研究旨在：（1）分析大众品牌酷与小众品牌酷对消费者品牌忠诚度的关系, 以对品牌的态度为中介, 以显性消费为调节; （2）检验显性消费的调节作用以及态度在大众品牌酷与小众品牌酷与品牌喜爱之间的中介作用; （3）分析将奢侈品牌分为小众品牌酷与大众品牌酷时, 结果是否稳定。

第一项研究使用小组样本, 以确定对品牌的态度在品牌酷感和品牌忠诚度之间的中介作用。第二项研究是一项实验性调查研究, 目的是描述显性消费对大众/小众品牌酷感与品牌喜爱之间以及大众/小众品牌酷感与品牌态度之间关系的调节作用。最后一项研究是一项联合分析, 旨在界定消费者对奢侈时尚领域中大众与小众酷品牌的不同评价因素。

研究结果 我们证明, 态度是品牌酷感与品牌忠诚度之间关系的中介。只有在小众酷品牌的情况下, 显性消费才会调节品牌酷度与态度之间的关系。在一个真实的现场实验中, 我们证实了态度的中介作用和显性消费的调节作用。我们还试图提供与大众奢侈品牌更相关的酷感维度, 以及与小众奢侈品牌更相关的酷感维度。

这些研究以奢侈时尚品牌为背景, 重新审视了品牌酷度、大众和小众酷度品牌的概念。

Various mass shooters have explained their violent actions as a response to failing at dominant forms of masculinity, including rejection from women and negative social comparisons to other men. The affect control theory of self (ACT-Self) posits that interactions that violate one's sense of self cause inauthenticity. This disequilibrium motivates behaviors that restore self-meanings, which may partially explain the link between challenges to the self and compensatory violence.

In Study 1, we use ACT-Self to examine the relationship between inauthenticity, violent fantasies, and physical aggression in the autobiography of one mass shooter. We quantify self-sentiments and inauthenticity using ACT-Self measures and methods, and perform a thematic analysis of the shooter's interpretations of and responses to disconfirming events. In Study 2, we examine the relationship between these same concepts in a survey of 18-to-32-year-old men (N = 847).

Study 1 shows that the shooter's inability to achieve popularity, wealth, sex, and relationships with beautiful women (compared to other men) produced inauthenticity that he resolved through violent fantasies, increasingly aggressive behavior, and ultimately, mass violence. Study 2 finds that inauthenticity arising from reflected appraisals from women predicts self-reported violent fantasies and physical aggression in a convenience sample of men in emerging adulthood.

This work leverages a formal social psychological theory to examine the link between self-processes and violence. Our findings suggest that men's inauthenticity, particularly produced by reflected appraisals from women, is positively associated with violent fantasies and acts. Further work is needed to assess whether this relationship is causal and for whom.

This study aims to investigate the impact and mechanism of new energy vehicle (NEV) information sources (IS) on mass consumers' purchase intentions (PIs) in China.

Around 902 valid questionnaires were collected using the questionnaire to analyze the different effects of three types of IS (official, interpersonal and commercial) on mass consumers' PIs. Besides, this study investigates the mechanisms by examining the mediating effect of perceived risk (PR) and the moderating effect of individual differences like age and education level.

The three types of NEV IS stimulate the PI of mass consumers, but there are some differences, with interpersonal information sources (IISs) having the strongest contribution, followed by official information sources (OISs) and commercial information sources (CISs) the least. Meanwhile, PR plays a mediating role in the effect of NEV IS on mass consumers' PIs, and age and education level moderate the influence paths. Specifically, the moderating effect of age mainly works on the negative impact of PR on PI, while education level moderates the influence of IS on PR.

This study contributes to filling the gaps in the current understanding of the role played by NEV IS in shaping consumer preferences and choices. It provides valuable insights for automotive manufacturers, policymakers and marketers to tailor their marketing strategies and improve information dissemination to effectively promote NEV adoption among mass consumers.

This study comprehensively examines entropy generation and thermosolutal performance of a ternary hybrid nanofluid in a partially active porous cabinet. The purpose of this study is to comprehend the intricate phenomena of double diffusion by investigating the dispersion behavior of Al₂O₃, CuO, and Ag nanoparticles in water.

The cabinet design consists of two horizontal walls and two curved walls with the lower border divided into a heated and concentrated region of length b and the remaining sections are adiabatic. The vertical borders are cold and low concentration, while the upper border is adiabatic. Two cavity configurations such as convex and concave are considered. A uniform porous medium is taken within the ternary hybrid nanofluid. This has been characterized by the Brinkman-extended Darcy model. Thermosolutal phenomena are governed by the Navier-Stokes equations and are solved by adopting a higher-order compact scheme.

The present study focuses on exploring the influence of several well-defined parameters, including Rayleigh number, Darcy number, Lewis number, Buoyancy ratio number, nanoparticle volume concentration and heater size. The results indicate that the ternary hybrid nanofluid outperforms both the mono and hybrid nanofluids in all considered aspects.

This study brings forth a significant contribution by uncovering novel flow features that have previously remained unexplored. By addressing a well-defined problem, the work provides valuable insights into the enhancement of thermal transport, with direct implications for diverse engineering devices such as solar collectors, heat exchangers and microelectronics.

This paper reports the results of research that examines the interrelationships between efficacy of sustainability values (SV) and pro-sustainable behaviors of potential tourists. A partially mediated model is postulated and tested to help explain additional error variance in predicting consumers’ destination choice decisions in tourism, hence voiding a critical research gap. Coined as the “environmentally intellectualist behavior,” a new mediator variable is tested to explain additional error variance in human-value models.

The study is based on data collected from two representative samples of potential tourists from the USA and Canada. Data analyses include exploratory and confirmatory factor analyses that were used to examine the underlying domain structures of SV, followed by a predictive model using structural equation modeling.

The study findings suggest that values are salient factors that underlie pro-sustainable tourism and travel behavior. Moreover, the results confirm the existence of a higher-order sustainability construct. The study contributes original insights to the field by demonstrating that there are direct and indirect positive relationships between SV, environmental behaviors and decisions of consumers who take a pro-sustainable stance when traveling.

By modeling values as antecedents to attitudes and testing interrelationships between SV and the mediator variables coined as the environmentally intellectual behavior, the authors developed and tested a predictive model to explain destination- and product choice decisions. The model tested herein advances the value theory in two fundamental ways: first, this study demonstrates that SV can be modeled as higher-order factors. Second, values are antecedents to attitude and other variables, therefore must be included in consumer behavior models. Finally, the culture or origin of tourists matters when examining the impact of values on tourists’ choice decisions. Political actions and environmental attitudes can be modeled as mediators to explain additional error variance.

Numerous metals can be processed using the additive manufacturing process laser-based powder bed fusion of metals (PBF-LB/M, ISO/ASTM 52900). The main advantages of additive manufacturing technologies are the high degree of design freedom and the cost-effective implementation of lightweight structures. This could be profitable for gears with increased power density, combining reduced mass with considerable material strength. Current research on additively manufactured gears is focused on developing lightweight structures but is seldom accompanied by simulations and even less by mechanical testing. There has been very little research into the mechanical and material properties of additively manufactured gears. The purpose of this study is to investigate the behavior of lightweight structures in additively manufactured gears under static loads.

This research identifies the static load-carrying capacity of helical gears with different lightweight structures produced by PBF-LB/M with the case hardening steel 16MnCr5. A static gear loading test rig with a maximum torque at the pinion of T₁ = 1200 Nm is used. Further focus is set on analyzing material properties such as the relative density, microstructure, hardness depth profile and chemical composition.

All additively manufactured gear variants show no failure or plastic deformation at the maximum test load. The shaft hub connection, the lightweight hub designs and the gearing itself are stable and intact regarding their form and function. The identified material characteristics are comparable to conventionally manufactured gears (wrought and machined), but also some particularities were observed.

This research demonstrates the mechanical strength of lightweight structures in gears. Future research needs to consider the dynamic load-carrying capacity of additively manufactured gears.

Emergence of COVID-19 has posed a big challenge around the world demanding responsible behavior at all levels for effective mitigation of its adverse effects on humanity. Despite deadly nature of the pandemic, people yet tend to violate the lockdowns, social distancing, and related protective measures. This study presents a critical view and identifies underlying causes of the deviant behavior of masses. It highlights specific areas where responsible leadership can make a difference in fighting the pandemic from organizational perspective.

Qualitative data collected through in depth interviews from three different countries - Pakistan, Turkey and Malaysia. The data was collected thrice with time lags and integrated view has been presented in this study.

The study finds that perceptual dissonance, cost of protective behavior, reactive attraction and perceived triviality of protective measures are some of the main causes of deviant behavior.

Although the data have been collected from three countries, yet smaller sample size remains a limitation of the study. Similarly, the longitudinal data was collected once in each wave of COVID-19 and its increased frequency could make findings more reliable.

The findings provide an “analysis template” for responsible leaders to analyze any crisis situation in future. In the light of findings, leaders can locate causes of deviant behavior and the way they can influence behavior of employees in a crisis.

The study is highly valuable in analysis of social dimension of COVID-19 crisis at organizational level. It clearly highlights the significance of social and financial support by responsible leaders for influencing the protective intentions of employees in an emergency situation.

The organizational perspective and the responsibilities of leaders for fighting the pandemic has not been adequately explored. This study has investigated the likely causes of deviant behavior of employees in adoption of protective measures. It also highlights the areas where responsible leaders can make a difference in inducing protective behaviors.