This paper develops and tests a new model for multiple-unit adoptions of durable goods based on the diffusion modeling tradition. Multiple-unit adoptions are a major component of sales for many consumer durable product categories. For instance, sales of multiple-unit adoptions for televisions have been high than both first adoptions and replacement purchases since 1977, while for automobiles th...

If targets to reduce greenhouse gas emissions and thereby tackle climate change are to be achieved, it will be necessary to reduce both embodied energy costs (e.g. in terms of producing and manufacturing the products and services that society consumes) and operational energy costs. Reducing the number of purchases that people regret could be a first step in changing the overall dynamic of consu...

OBJECTIVE To estimate the impact of global strategies, such as pooled procurement arrangements, third-party price negotiation and differential pricing, on reducing the price of antiretrovirals (ARVs), which currently hinders universal access to HIV/AIDS treatment. METHODS We estimated the impact of global strategies to reduce ARV prices using data on 7253 procurement transactions (July 2002-O...

THE Covid-19 pandemic will be forever associated with dramatic lifestyle changes – restrictions, furloughing, self isolation and home schooling. And now, we can firmly add getting a dog to that list. A study conducted by research team at the Royal Veterinary College (RVC) has now confirmed what many anecdotal reports have said 2020 was not normal year for puppy buying. Early findings from study...

Priced oblivious transfer (POT) is a two-party protocol between a vendor and a buyer in which the buyer purchases digital goods without the vendor learning what is bought. Although privacy properties are guaranteed, current schemes do not offer fair exchange. A malicious vendor can, e.g., prevent the buyer from retrieving the goods after receiving the payment, and a malicious buyer can also acc...

Purpose – This study aims to examine the role of environmentally induced stimulation in influencing impulse buying. In addition, the authors seek to investigate the impact of two social factors (perceived crowding and employee friendliness) on unplanned purchases. Design/methodology/approach – A wide variety of retail outlets in Singapore were selected as the context for this field study, rangi...

Anyone who has studied elementary economics has encountered the idea that a society's output may be either "guns" or "butter" and that, once all resources are employed, having more of one entails having less of the other. This categorization of output is only a metaphor to make more concrete the concepts of production possibility and opportunity cost. I propose, however, to take the categorizat...

This paper studies the e ects of various types of online advertisements on purchase conversion by capturing the dynamic interactions among advertisement clicks themselves. It is motivated by the observation that certain advertisement clicks may not result in immediate purchases, but they stimulate subsequent clicks on other advertisements which then lead to purchases. We develop a stochastic mo...