KraljicMatrix: An R package for implementing the Kraljic Matrix to strategically analyze a firm’s purchasing portfolio

Boehmke, Bradley C.; Montgomery, Robert T.; Ogden, Jeffrey A.; Freels, Jason K.

doi:10.21105/joss.00170

Cited by 4 publications

(3 citation statements)

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“…Tolerant crops, by allowing pathogen replication, do not exert the same selection pressure (Råberg et al, 2009) and, therefore, may provide a more durable protection against yield loss. Indeed, in van den Bosch et al (2006), the authors defined four types of resistance, one of which-'symptomreducing resistance'-is similar in mechanism to what we define as tolerant in this article. The authors note that this form of resistance does not put pressure on the pathogen to evolve higher mutation rates.…”

Section: Discussionmentioning

confidence: 95%

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Expanding growers' choice of plant disease management options can promote suboptimal social outcomes

Murray-Watson

Cunniffe

2023

Plant Pathology

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Previous models of growers' decision-making during epidemics have unrealistically limited disease management choices to just two options. Here, we expand previous game-theoretic models of grower decision-making to include three control options: a crop that is tolerant, resistant or susceptible to disease. Using tomato yellow leaf curl virus (TYLCV) as a case study, we investigate how growers can be incentivized to use different control options to achieve socially optimal outcomes. To do this, we consider the efforts of a 'social planner' who moderates the price of crops. We find that subsidizing a tolerant crop costs the social planner more in subsidies, as its use encourages selfishness and widespread adoption. Subsidizing a resistant crop, however, provides widespread benefits by reducing the prevalence of disease across the community of growers, including those that do not control, reducing the number of subsidies required from the social planner. We then use Gini coefficients to measure equitability of each subsidization scheme. This study highlights how grower behaviour can be altered using crop subsidies to promote socially optimal outcomes during epidemics.

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Section: Discussionmentioning

confidence: 95%

“…We first run the model for different values of ϕ T and ϕ R (400 values between 0 and 0.4 for each parameter) to find the equilibrium profit of growers and cost to the planner. We then use these two results as inputs to get frontier () function from the KraljicMatrix package in R (Boehmke et al, 2017 ), which calculates the Pareto front.…”

Section: Methodsmentioning

confidence: 99%

Expanding growers' choice of plant disease management options can promote suboptimal social outcomes

Murray-Watson

Cunniffe

2023

Plant Pathology

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“…We first run the model for different values of ϕ T and ϕ R (400 values between 0 and 0.4 for each parameter) to find the equilibrium profit of growers and cost to the planner. We then use these two results as inputs to get f rontier() function from the KraljicMatrix package in R (Boehmke et al (2017)), which calculates the Pareto front.…”

Section: Calculating the Pareto Front And Gini Coefficientsmentioning

confidence: 99%

Expanding growers’ choice of disease management options can promote suboptimal social outcomes

Murray-Watson

Cunniffe

2022

Preprint

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Previous models of growers' decision-making during epidemics have unrealistically limited disease management choices to just two options. Here, we expand previous game-theoretic models of grower decision-making to include three control options: crop that is either tolerant, resistant, or susceptible to disease. Using Tomato Yellow Leaf Curl Virus (TYLCV) as a case study, we investigate how growers can be incentivised to use different control options to achieve socially-optimal outcomes. To do this, we consider the efforts of a "social planner" who moderates the price of crops. We find that subsidising tolerant crop costs the social planner more in subsidies, as its use encourages selfishness and widespread adoption. Subsidising resistant crop, however, provides widespread benefits by reducing the prevalence of disease across the community of growers, including those that do not control, reducing the number of subsidies required from the social planner. We then use Gini coefficients to measure equitability of each subsidisation scheme. This study highlights how grower behaviour can be altered using crop subsidies to promote socially-optimal outcomes during epidemics.

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Redefining procurement paradigms: A critical review of buyer-supplier dynamics in the global petroleum and natural gas industry

Alhammadi,

Soar,

Yusaf

et al. 2023

The Extractive Industries and Society

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KraljicMatrix: An R package for implementing the Kraljic Matrix to strategically analyze a firm’s purchasing portfolio

Cited by 4 publications

References 1 publication

Expanding growers' choice of plant disease management options can promote suboptimal social outcomes

Expanding growers' choice of plant disease management options can promote suboptimal social outcomes

Expanding growers’ choice of disease management options can promote suboptimal social outcomes

Redefining procurement paradigms: A critical review of buyer-supplier dynamics in the global petroleum and natural gas industry

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