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A turbulent kinetic theory due to Chung and a Green’s function method by Hong were employed to solve a reacting turbulent plane jet problem. An instantaneous mixing concept was used to simulate the steady state of turbulent plane jet with combustion. The probability density function description of the fluid elements in a turbulent reacting flow could properly explain the turbulent flame zone structure and the turbulent transport of heat, momentum and chemical species even under the infinitely fast reaction rate assumption. The calculated distributions of the various moments of the turbulent combustion field were found in good agreement with the available experimental data. The dynamic behaviour of combustion in the turbulent field could be better understood via the probability density function description of the present turbulent kinetic theory approach.

Online reviews presented in the format of multimedia information, such as pictures and videos, continue to emerge, but whether the richness of multimedia information can enforce the quality of online reviews has remained uncertain. The purpose of this paper is to examine the differences in the perceived information quality of online reviews, based on the information richness theory, emotional polarity and product type.

This is a Web-based experiment in which 12 groups constructed at different levels of these three factors were designed for the purpose of obtaining data.

The study results show that under different positive and negative emotional polarities, different information richness and product types have different effects on perceived information quality; for different product types, positive and negative emotional polarity have different effects on perceived information quality. For “search” products, the perceived information quality of online reviews with low information richness is high; under different information richness, different emotional polarity and product types have different effects on perceived information quality.

This paper has important practical significance for the management of e-commerce platforms for online reviews.

This paper on the perceived information quality of online reviews puts more focus on the formal features of online reviews and aims to discover the relationships between different directions for perceived information quality under the impact of interaction of formats, emotional polarity and product type. The study hopes to further strengthen the application of the information richness theory in the field of online reviews research and to measure perceived information quality from a variety of aspects.

Solutions of the twin plane jets HF chemical laser flow based on a turbulent kinetic theory, due to a modified Green’s function method, are presented. The calculated results of probability density function (PDF) of various chemical species in velocity space, and mass fraction concentration distributions of various reactants and products in the flow field, are revealed and discussed in this analysis. The transport phenomena of different pumping rate, collisional deactivation rate, and radiative deactivation rate in the interaction between the twin plane jets HF chemical laser show that the properties of species mass fraction concentrations, collisional reaction rate, and radiative incident intensity are the dominant factors. The present study provides the fundamentals for theoretical understanding of twin plane jets HF chemical laser and further application to multiple‐jet HF chemical laser analysis.

Drawing upon the resource-based view of the firm, this paper aims to develop and empirically validate a model that examines the relationships between technical knowledge management infrastructure (TKMI), social KM infrastructure (SKMI) and competitive advantage provided by KM (CAPKM). The authors argue that KM process capabilities account for the direct effects of TKMI and SKMI on CAPKM.

The study used partial least squares —structural equating modelling (SEM) to empirically test the hypotheses using a sample of 251 firms from an emerging economy. The results were then confirmed using the bias-corrected bootstrap procedure. The study also conducted two robustness checks including examining a competing moderation model and performing fuzzy-set qualitative comparative analysis (fsQCA), a set–theoretic method that examines how causal conditions combine into all possible configurations of binary states to explain the desired outcome.

The findings show that TKMI and SKMI have positive effects on CAPKM. In addition, KM process capabilities mediate the direct effects of TKMI and SKMI on CAPKM.

This paper complements and advances previous research in several ways. Firstly, the paper develops a conceptual model that depicts the interrelationships between TKMI, SKMI, KM process capabilities and CAPKM. Secondly, this paper suggests the critical role of the “action” component (i.e. KM process capabilities) that capitalises on the KM resources in the creation of CAPKM.

This research proposes an innovative fault-tolerant media content list management technology applied to the smart robot domain.

A fault tolerant Content List Management Unit (CLMU) for real-time streaming systems focusing on smart robot claw machines is proposed to synchronize and manage the hyperlink stored on media servers. The fault-tolerant mechanism is realized by the self-healing method. A media server allows exchanging the hyperlink within the network through the CLMU mechanism.

Internet users can access the current multimedia information, and the multimedia information list can be rearranged appropriately. Furthermore, the service of the proposed multimedia system should be uninterrupted even when the master media server fails. Therefore, one of the slave media servers enables the Content List Service (CLS) of the proposed CLMU and replaces the defunct master media server.

The recovery time is less than 1.5 seconds. The multimedia transmission is not interrupted while any one of the media servers keeps functioning. The proposed method can serve to stabilize the system of media servers in a smart robot domain.

Through the study of the Liberal Studies reform in Hong Kong, this paper aims to investigate to what extent the curriculum reform makes a difference in the achievement gap between middle-class and lower-class students. Specifically, it examines the variation of the “class gap” between Liberal Studies and other traditional, core subjects in terms of the public examination results, and the major mediators underlying the class effect on the results.

Data from a survey of 1,123 students from 15 schools who studied the new curriculum between 2009-2010 and 2011-2012 in Hong Kong were analyzed using the hierarchical multiple regression models.

Students’ class backgrounds, mainly indicated by parental education, continue to make a substantive contribution to the achievement gap.

Given that Liberal Studies’ examination is compulsory for university entrance, the sensitivity of this reform to existing educational inequalities has a significant impact on students’ chances of entering local universities.

Sociologists have long observed the class gap in education, and this paper adds an important exogenous source, a curriculum change, to the analysis. The Liberal Studies reform has provided a unique opportunity to examine the potential effect of a curriculum change on the class gap. In addition, in view of the absence of empirical evidence in this topic, this paper is an effort to build the evidence base for understanding the outcomes of the reform.

The rise of the Internet has facilitated net activism among many virtual gay communities in Taiwan. The communication role that the Internet plays is in particular vital, because homosexuality is still considered a taboo in Taiwan's society. Cyberspace created by the Internet forms a unique “space” where local homosexuals can share their experience of being gays with each other. The purposes of this chapter are intended to examine how the Internet facilitated the formation, promotion, and success of gay rights movements among homosexual communities in Taiwan. This chapter uses the Chang-Der Street Police Harassment Incident as a case study to elaborate the Internet's communication role in mobilizing local gay populations to pursue their gay rights. It also investigates the Internet's strategic role as a communication medium in gay rights movements. The case analysis and in-depth interviews help identify several key functions that the Internet can play: to exchange and share information, to organize and coordinate gay rights movements, to record and store historical information, and to lead social and value changes in the future. This chapter explores the potential of the Internet in online community mobilization, an early look at virtual community and net activism.

This study intends to analyze the trend of walkability research over two years (2021–2022) in several aspects, including the research problem, gap and aim underlying walkability issues, research setting, the scale of analysis, the type of data, the data collection tool, the analysis method and contribution.

Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) is employed to conduct a systematic literature review from three leading databases including Web of Science (WoS), Scopus and Sage.

From the review, it can be concluded that the research focuses on two aspects, namely, the built environment and people. The studies in this field are conducted at different scales of the built environment, from macroscale to microscale, including region, city, neighborhood and street-level studies that are conducted around the world including Asia, Europe and America which receive high attention from researchers. Meanwhile, the study of walkability in Australia and Africa gains less attention. It is revealed that there are four factors of walkability including land use and accessibility for macroscale which cover region, city and neighborhood, while street network and pedestrian infrastructure and facility are mainly analyzed for street-level. Most of the studies widely utilize a quantitative approach for analyzing physical walkability factors in a measurement-based approach by using certain tools/software, and a perception-based approach by using questionnaires.

The findings can assist to keep up with the rapid pace of scientific publications and help accelerate the understanding of particular ideas in the field of walkability for the planning and design practice and policy that can be used by researchers/academia, urban designers, urban planners, architects, engineers and policymakers. Also, this study hopefully could assist further research direction for the future and could add value to a more advanced way of understanding the research on walkability.

This research provides a robust framework for walkability trend analysis and a comprehensive understanding of the main ideas from the existing research on walkability worldwide.

The purpose of this paper is to investigate a large‐eddy simulation, using low order numerical discretization and upwinding schemes on unstructured grids, for a turbulent free jet at Mach number 0.95. The accuracy and stability performance is discussed for the finite element/volume upwinding numerical code used.

This code is equipped with a self‐adaptive upwinding method which has been previously developed to reduce the numerical dissipation of applied low order flux calculation on unstructured elements using Roe's scheme. Herein, this method is used to numerically investigate a high Reynolds, compressible turbulent free jet and compare the results with a recently published set of experimental data. The effect of grid size is also investigated. A reasonable good agreement with the experimental measurements is obtained.

Based on the results, it is concluded that the developed self‐adaptive upwinding scheme provides a considerably better emulation of the flow regime in comparison to the full‐upwinding scheme. Different case studies have been carried out to assess the performance of self‐adaptive upwinding method and the effect of the subgrid model.

This paper presents an original research on self‐adaptive upwinding scheme and the effect of the subgrid model on a compressible turbulent free jet.

Based on the service-profit chain perspective, this study investigates whether service-oriented human resource practices can enhance customer outcomes through motivational mechanisms (i.e. intrinsic/extrinsic satisfaction) as well as emotional mechanisms (i.e. emotional labor strategies).

This study collected paired data from 220 service workers and their customers at different time points from 80 service firms. Multilevel path-analysis was conducted to test the proposed hypotheses.

Our results indicate that firm-level extensive training is positively related to service workers' intrinsic job satisfaction, which in turn increases deep acting. In addition, firm-level incentive compensation is positively associated with service workers' extrinsic job satisfaction, which in turn reduces surface acting. Finally, service employee's deep acting enhances customer loyalty and willingness to recommend via customer satisfaction.

The service organization should (1) stress the importance of incentive compensation to decrease surface acting via enhancing extrinsic job satisfaction and (2) provide extensive service training to improve service employees' intrinsic satisfaction and deep acting, leading to favorable customer outcomes.

The present study identifies the critical roles of motivational and emotional mechanisms in transferring service-oriented human resource practices to customer outcomes and employing rigorous research design to enhance the internal/external validity of our findings.