Using a fractional model to measure the impact of antioxidant information, price, and liking on purchase intent for specialty potatoes

2015 ◽  
Vol 46 ◽  
pp. 66-78 ◽  
Author(s):  
Catherine A. Durham ◽  
Linda J. Wechsler ◽  
Michael T. Morrissey
2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Mohammed A. Aba Oud ◽  
Aatif Ali ◽  
Hussam Alrabaiah ◽  
Saif Ullah ◽  
Muhammad Altaf Khan ◽  
...  

AbstractCOVID-19 or coronavirus is a newly emerged infectious disease that started in Wuhan, China, in December 2019 and spread worldwide very quickly. Although the recovery rate is greater than the death rate, the COVID-19 infection is becoming very harmful for the human community and causing financial loses to their economy. No proper vaccine for this infection has been introduced in the market in order to treat the infected people. Various approaches have been implemented recently to study the dynamics of this novel infection. Mathematical models are one of the effective tools in this regard to understand the transmission patterns of COVID-19. In the present paper, we formulate a fractional epidemic model in the Caputo sense with the consideration of quarantine, isolation, and environmental impacts to examine the dynamics of the COVID-19 outbreak. The fractional models are quite useful for understanding better the disease epidemics as well as capture the memory and nonlocality effects. First, we construct the model in ordinary differential equations and further consider the Caputo operator to formulate its fractional derivative. We present some of the necessary mathematical analysis for the fractional model. Furthermore, the model is fitted to the reported cases in Pakistan, one of the epicenters of COVID-19 in Asia. The estimated value of the important threshold parameter of the model, known as the basic reproduction number, is evaluated theoretically and numerically. Based on the real fitted parameters, we obtained $\mathcal{R}_{0} \approx 1.50$ R 0 ≈ 1.50 . Finally, an efficient numerical scheme of Adams–Moulton type is used in order to simulate the fractional model. The impact of some of the key model parameters on the disease dynamics and its elimination are shown graphically for various values of noninteger order of the Caputo derivative. We conclude that the use of fractional epidemic model provides a better understanding and biologically more insights about the disease dynamics.


Fractals ◽  
2021 ◽  
Author(s):  
WEI CAI ◽  
PING WANG

In this paper, a power-law strain-dependent variable order is first incorporated into the fractional constitutive model and employed to describe mechanical behaviors of aluminum foams under quasi-static compression and tension. Comparative results illustrate that power-law strain-dependent variable order is capable of better describing stress–strain responses compared with the traditional linear one. The evolution of fractional order along with the porosities or relative densities can be well qualitatively interpreted by its physical meaning. Furthermore, the model is also extended to characterize the impact behaviors under large constant strain rates. It is observed that fractional model with sinusoidal variable order agrees well with the experimental data of aluminum foams with impact and non-impact surfaces.


2021 ◽  
pp. 301-309
Author(s):  
Ajay Jamnani ◽  
Jyoti Jamnani

The purpose of this paper is to develop the content and analyze the factors that impact the intent to purchase of customers from a food truck. The study was carried out in Belagavi, Karnataka, India, the study was carried out using a structured questionnaire to collect the data, the data was checked for normality and reliability, further one sample t test was applied to check the impact of selected factors on purchase intent of customers from food trucks. Demographic analysis of the respondents was also a part of the study. The impact of selected factors/variables on customer intent to purchase from food trucks was analyzed and it was observed that prize, taste, hygiene, Variety, service quality and exteriors had significant impact on the customer’s intent to purchase as the p-value = 0.000 (is < 0.05). The factors or variables were not borrowed from a single proven model in the literature, the factors were selected on the basic understanding of the researchers. The study was the first to analyze the impact of the factors impacting the customer intent to purchase from food truck in a non-metro city, and the results can be used by professionals working in the area.


Author(s):  
Jung-Hwan Kim ◽  
Minjeong Kim ◽  
Jay Kandampully

The purpose of this research is to determine the key dimensions of e-retail environment characteristics which affect consumer e-satisfaction and purchase intent and to examine the mediating role of e-satisfaction and the moderating effects of consumers’ previous e-shopping experience on the relationship between e-retail environment characteristics and consumer responses. The study focused on young adults ranging in age from 18 to 25. The results showed that convenience, customization, security/privacy, web appearance and entertainment value were the key characteristics of e-retail environment impacting e-satisfaction. E-satisfaction fully mediated the effects of e-retail environment characteristics on online purchase intent. Prior e-shopping experience was found to moderate the relationships among the key dimensions of e-retail environment, e-satisfaction, and e-purchase intent. The findings of this study add to the existing literature on e-service quality by focusing on e-retail environment characteristics beyond products and prices, and further by providing e-retailers with practical implications as to how they can improve their website environments for successful e-retailing business.


2021 ◽  
Vol 14 (8) ◽  
pp. 145-158
Author(s):  
Raj Kumar Singh ◽  
Bijay Prasad Kushwaha ◽  
Tushita Chadha ◽  
Vivek Anand Singh

Digital media marketing and celebrity endorsement have a significant impact on consumer purchase intent. The digital media marketing tools give marketers a competitive advantage in influencing customers and driving purchase intent toward their offerings. The study aims to examine the effectiveness of digital media as well as the impact of celebrity endorsements on consumer purchase intentions. The purposive sampling technique was used to collect responses from 523 residents of the tri-city Chandigarh using a structured questionnaire. The findings advocate that celebrity endorsement is a substantial marketing tool for driving consumer purchase intention via digital media platforms. The indirect effect of celebrity endorsement on consumer purchase intention was also significant when digital marketing media was used as a meditating variable. The data analysis and validation of the conceptual framework were carried out using the PLS-SEM. The study's implications are discussed.


2005 ◽  
Vol 81 (2) ◽  
pp. 229-244 ◽  
Author(s):  
Hadley Archer ◽  
Robert Kozak ◽  
David Balsillie

This exploratory research of four Canadian cities, conducted in 2003, compares the impact of forest certification labelling and advertising on the purchase intent of wood and paper products by end-use consumers. Telephone survey results indicate that Canadians are concerned about the environment, have positive attitudes towards certification, and are willing to alter their purchase habits to favour certified wood and paper products. Respondents indicated that labelling would more likely influence their purchase decision than advertising. They also indicated a lack of awareness regarding forest certification, and that advertising was the preferred strategy to increase general awareness among consumers. A segment of consumers was identified, representing 70% of the sample, which is highly concerned about the environment, willing to seek out certified products, and favours labelling as a source of information to assist with their purchase decisions for certified forest products. Key words: forest certification, eco-labelling, green advertising, consumer purchase intent, green consumers


Author(s):  
Ana Hérica de Lima Mendes ◽  
Ana Paula Dionísio ◽  
Carlos Farley Herbster Mouta ◽  
Fernando Antonio Pinto de Abreu ◽  
Claudia Oliveira Pinto ◽  
...  

Abstract Yacon syrup (YS) and cashew apple extract (CAE) are products with high concentrations of bioactive compounds such as fructooligosaccharides and carotenoids, which exhibit prebiotic and antioxidant properties. The objective of this work was to evaluate the impact of YS and CAE on the chemical, physical, physicochemical and sensory properties when these products were incorporated into natural yoghurt. Initially, the YS and CAE were characterized by chemical, physical and physicochemical analyses. The bioactive compounds, such as carotenoids, fructooligosaccharides and phenolic compounds, and the antioxidant activity were also determined. After characterization, natural yoghurt was supplemented with YS and CAE in different concentrations as follows: formulation A (non-supplemented yoghurt, as the control), formulation B (yoghurt with the addition of 20% of YS), formulation C (yoghurt with the addition of 20% of YS and 10% of CAE) and formulation D (yoghurt with the addition of 20% of YS and 20% of CAE). The formulations were evaluated for their sensory acceptance (overall acceptance, texture and appearance) and purchase intent, and were then characterized by chemical, physicochemical and physical analyses. The results indicated that the YS and CAE presented high concentrations of bioactive compounds, such as fructooligosaccharides and carotenoids, respectively. In addition, when the yoghurt was supplemented with these products, this induced changes in the chemical, physicochemical and physical properties of the yoghurt. In the sensory analysis, all the formulations presented good acceptance. The results indicated that yoghurt could be considered as an interesting vehicle for YS and CAE, products with high levels of bioactive compounds that may exert beneficial effects on human health.


2018 ◽  
Vol 11 (2) ◽  
pp. 155-170
Author(s):  
Slavko Alčaković ◽  
Ana Orlić ◽  
Veljko Đurić

This study examined the impact of emotional context on effectiveness of TV commercials (TVCs). In two experiments, participants were exposed to either emotionally positive or emotionally negative stimuli before watching a TVC. The effectiveness of the TVC was measured by 4 indicators: Ad recall, attitude toward the ad (Aad), attitude toward the brand (Ab), and purchase intent (PI). Results of Experiment 1 revealed that participants who were pre-exposed to a positive emotional context had a more positive Aad, Ab and a higher PI, when compared to those who were pre-exposed to a negative emotional context. Experiment 2 demonstrated that pre-exposure to the positive emotional context was associated with more positive Ab and a higher PI, while preexposure to the negative emotional context led to more negative Aad. In both experiments there was no indication of the influence of the emotional context on Ad recall. However, data from Experiment 2 suggested that both positive and negative emotional contexts positively affected ad recognition, when compared to an emotionally neutral situation. In conclusion, our findings advocate the importance of emotional context in which TVCs are broadcasted to the general public, a fact that has been vastly neglected so far by media planners.


Author(s):  
Jung-Hwan Kim ◽  
Minjeong Kim ◽  
Jay Kandampully

The purpose of this research is to determine the key dimensions of e-retail environment characteristics which affect consumer e-satisfaction and purchase intent and to examine the mediating role of e-satisfaction and the moderating effects of consumers’ previous e-shopping experience on the relationship between e-retail environment characteristics and consumer responses. The study focused on young adults ranging in age from 18 to 25. The results showed that convenience, customization, security/privacy, web appearance and entertainment value were the key characteristics of e-retail environment impacting e-satisfaction. E-satisfaction fully mediated the effects of e-retail environment characteristics on online purchase intent. Prior e-shopping experience was found to moderate the relationships among the key dimensions of e-retail environment, e-satisfaction, and e-purchase intent. The findings of this study add to the existing literature on e-service quality by focusing on e-retail environment characteristics beyond products and prices, and further by providing e-retailers with practical implications as to how they can improve their website environments for successful e-retailing business.


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