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The purpose of this paper is to derive a unified formulation for incorporating different dispersive models into the explicit and implicit finite difference time domain (FDTD) simulations.

In this paper, dispersive integro-differential equation (IDE) FDTD formulation is presented. The resultant IDE is written in the discrete time domain by applying the trapezoidal recursive convolution and central finite differences schemes. In addition, unconditionally stable implicit split-step (SS) FDTD implementation is also discussed.

It is found that the time step stability limit of the explicit IDE-FDTD formulation maintains the conventional Courant–Friedrichs–Lewy (CFL) constraint but with additional stability limits related to the dispersive model parameters. In addition, the CFL stability limit can be removed by incorporating the implicit SS scheme into the IDE-FDTD formulation, but this is traded for degradation in the accuracy of the formulation.

The stability of the explicit FDTD scheme is bounded not only by the CFL limit but also by additional condition related to the dispersive material parameters. In addition, it is observed that implicit JE-IDE FDTD implementation decreases as the time step exceeds the CFL limit.

Based on the presented formulation, a single dispersive FDTD code can be written for implementing different dispersive models such as Debye, Drude, Lorentz, critical point and the quadratic complex rational function.

The proposed formulation not only unifies the FDTD implementation of the frequently used dispersive models with the minimal storage requirements but also can be incorporated with the implicit SS scheme to remove the CFL time step stability constraint.

The purpose of this paper is to present efficient and stable generalized auxiliary differential equation finite difference time domain (G-ADE-FDTD) implementation of graphene dispersion.

A generalized dispersive model is used for describing the graphene’s intraband and interband conductivities in the terahertz and infrared frequencies. In addition, the von Neumann method combined with the Routh-Hurwitz criterion are used for studying the stability of the given implementation.

The presented G-ADE-FDTD implementation allows modeling graphene’s dispersion using the minimal number of additional auxiliary variables, which will reduce both the CPU time and memory storage requirements. In addition, the stability of the implementation retains the standard non-dispersive Courant–Friedrichs–Lewy (CFL) constraint.

The given implementation is conveniently applicable for most commonly used dispersive models, such as Debye, Lorentz, complex-conjugate pole residue, etc.

The presented G-ADE-FDTD implementation not only unifies the implementation of both graphene’s intraband and interband conductivities, with the minimal computational requirements but also retains the standard non-dispersive CFL time step stability constraint.

The purpose of this paper is to design a watcher-based crawler (WBC) that has the ability of crawling static and dynamic web sites, and can download only the updated and newly added web pages.

In the proposed WBC crawler, a watcher file, which can be uploaded to the web sites servers, prepares a report that contains the addresses of the updated and the newly added web pages. In addition, the WBC is split into five units, where each unit is responsible for performing a specific crawling process.

Several experiments have been conducted and it has been observed that the proposed WBC increases the number of uniquely visited static and dynamic web sites as compared with the existing crawling techniques. In addition, the proposed watcher file not only allows the crawlers to visit the updated and newly web pages, but also solves the crawlers overlapping and communication problems.

The proposed WBC performs all crawling processes in the sense that it detects all updated and newly added pages automatically without any human explicit intervention or downloading the entire web sites.

This study aims to integrate brand and retailer levels variables to examine the direct and indirect relationships between omnichannel retailing and consumer engagement.

Survey data are collected from a sample consumers of different omnichannel retailing brands operating in the skin care industry. Partial least squares structural equation modeling is utilized.

The study finds brand channels' integrated interactions (process and content consistency) to increase consumer brand engagement. Findings show retailer consumer empowerment to intensify the impact of omnichannel retailing on consumer engagement. Results also show brand channels' integrated interactions to increase consumer brand familiarity, which mediates the effect of omnichannel retailing on consumer engagement.

This study suggests that integrating brand- and retailer-level variables is vital to understand the effect of omnichannel retailing on consumer engagement. The study concludes that for successful omnichannel strategy, collaboration between brands and retailers is imperative.

The purpose of this paper is to explore the influence of Islamic beliefs and practices on leisure and travel behavior of Muslims in Clemson, South Carolina. With the increase of Muslims in the USA, from both conversion and immigration, it is important to examine the effects of their religion on leisure and travel behavior.

Using the grounded theory approach, semi-structured interviews with six Muslim men and six Muslim women of different nationalities were conducted in English in the local Mosque of Clemson, South Carolina, in the fall of 2011.

The results provide some evidence that Islamic beliefs and behavioral practices influence leisure and travel behavior of Muslims in the USA. The study identifies seven major themes that play an important role in determining leisure and travel behavior of Muslims in Clemson. These are the importance of mosques, traveling with a Mohram, Hijab and a dress code for men and women, drinking alcohol and being in places where alcohol is served, eating pork, Holy Month of Ramadan and Dabiha.

The study highlights the need for tourism marketers to pay more attention to the influence of religion on leisure and travel behavior of Muslim travelers.

The study provides the tourism industry with a better understanding of the importance of religion influences on the special needs of Muslim travelers and shows how the industry can better accommodate these needs.

The learning outcomes of this paper are as follows: to assess the extent to which a new business concept or entrepreneurial idea represents a commercial success or practical failure, to estimate the complexities associated with the management of a partnership-based venture in the context of emerging markets, to demonstrate understanding of entrepreneurial action and strategic adaptation under the condition of uncontrollable external shocks (e.g. COVID-19) and to evaluate the pros and cons of different strategic options and provide viable recommendations for the future.

Startup entrepreneurship constitutes the backbone of the socioeconomic activity of any nation and a driver of innovation, industrial diversification and wealth generation, particularly in emerging market settings. Drawing upon narrative storytelling techniques, this case study immerses the reader into the intricacies of entrepreneurial venture creation within the dynamic startup ecosystem in the Middle East. It follows the story of a young serial entrepreneur, Omar, who decided to launch a business in the creative industry of arts in the United Arab Emirates in partnership with his friend, Ahmed. Their common venture, Mont8, showcased and promoted the artwork of budding and well-known Arab talents and was on track to become a recognizable brand in the Middle Eastern business of arts until the COVID-19 crisis shook the world taking everyone by surprise. In an attempt to build a successful post-pandemic future, Omar was convinced that Mont8 needed to fast-track its digital transformation. He envisioned an e-commerce marketplace that would empower Arab artists, designers and photographers to create customized virtual galleries on their own web-stores through the Mont8’s digital platform. Yet, Omar’s vision diverged drastically from the very conservative mindset of Ahmed, who did not want to disrupt tradition and argued in favor of a back-to-business-as-usual approach. It remains unclear whose option would be selected and whether the two partners would stay in this makeover together or rather part ways.

Upper-level undergraduate courses.

Teaching notes are available for educators only.

CSS 3: Entrepreneurship.

The purpose of this study is to develop a model for the study of Islamic bank choice and to test the significant importance of the constructs that influence bank customers to choose Islamic bank in a pluralistic-secular nation.

Total of 348 conventional and Islamic bank customers were sampled. Five-point Likert-type question containing 27 bank selection items was used in collecting primary data. Cronbach’s alpha, composite reliability and average variance extracted are used to test the reliability and validity of the instrument. Also various descriptive statistics, exploratory factor analysis and one sample T-test are equally used in analyzing the work.

Exploratory factor analysis identified four factors. They are Islamic ethics, convenience, Islamic bank services awareness and physical evidence. Furthermore, the factors that show significant importance in the choice of Islamic banking are Islamic ethics and Islamic bank services awareness. The result equally shows that people are aware of Islamic banking.

This study provides insight on the factors that influence the selection of Islamic banking, an innovative banking concept. This study has obvious management and theory implications. Also, the study will assist the bank managers in developing effective marketing strategy to increase the market share.

This study reports Islamic banking selection criteria in a pluralistic-secular Nation. The study also developed a model that can be used in studying the choice of Islamic bank in special type of environment. Thus, Islamic banking is a new reality in the Nigerian financial scene.

This study aims to examine the impact of social advertising (informative, entertainment, credibility, ease of use, privacy and contents) on the buying behavior of Muslim consumers toward the fashion clothing brands during the Holy Month of Ramadan along with the moderating role of brand image. Precisely, it focuses on the marketing techniques and strategies in social advertising to enhance buying behavior.

Using the convenience sampling technique, data was collected from 304 Muslim consumers during the Holy Month of Ramadan. Questionnaires were self-administered, and data was analyzed via Smart partial least square structural equation modeling.

Social advertising (informative, entertainment, credibility, privacy, ease of use, contents) and brand image have a positive relationship with the buying behavior of Muslim consumers toward the fashion clothing brands during the Holy Month of Ramadan, while the brand image has nonmoderating effects. Furthermore, social advertising has a positive and significant relationship with the brand image.

This study is only limited to fashion clothing brands in the Malaysian Muslim community and is based only on the few dimensions of the theory of reasoned action and technology acceptance model (TAM).

Results clarified the impact of social advertising and brand image on the buying behavior of Muslim consumers toward the fashion clothing brands during the Holy Month of Ramadan and the moderating role of brand image in achieving the business objectives.

This study has evaluated the effects of social advertising and brand image in enhancing the buying behavior of Muslim consumers during the Holy Month of Ramadan toward the fashion clothing brands along with the moderating role of brand image based on the theory of reasoned action and TAM model. Precisely, this study examined the unique characteristics of social advertising and the relative importance of informative, entertainment, credibility, ease of use, privacy and content in enhancing the buying behavior of Muslim consumers during the Holy Month of Ramadan, where consumers are emotionally involved in buying fashion clothing brands due to Eid al Fitr celebration.

The purpose of this paper is to study the propagation of Rayleigh waves in thermoelastic medium with mass diffusion.

The field equations for the linear theory of homogeneous isotropic thermoelastic diffusion medium are taken into consideration by using dual-phase-lag heat transfer (DPLT) and dual-phase-lag diffusion (DPLD) models. Using the potential functions and harmonic wave solution, three coupled dilatational waves and a shear wave is obtained. After developing mathematical formulation, the dispersion equation is obtained, which results to be complex and irrational. This equation is converted into a polynomial form of higher degree.

From the polynomial equation, Rayleigh wave root is found. The secular equation is resolved into a polynomial form to find the roots and therefore to find the existence and propagation of Rayleigh wave. The existence of Rayleigh wave in the assumed model depends on the values of various parameters involved in the secular equation. These roots are resolved for phase velocity and attenuation of the inhomogeneous propagation of Rayleigh wave. Behavior of particle motion of these waves inside and at the surface of the thermoelastic medium with mass diffusion is studied. Particular cases of the interest are also deduced from the present investigation.

Governing equations corresponding to DPLT and DPLD models of thermoelastic diffusion are formulated to study the wave propagation and their dependence on various material parameters. In this paper effects of thermal and diffusion phase lags on the phase velocity, attenuation and on particle paths are observed and depicted graphically.