# Understanding CO2 Emissions for different freight transport modes (renewable as well as non-renewable)

One of the most important questions to ask in transitioning to renewable modes of transport is simply: How much less CO2 are we going to emit by switching to renewables? The...

# Tesla Lease Mileage Limit and the Central Limit Theorem

I am onto my second Tesla car leases now, so I think I can define another form of range anxiety with my leased cars: Driving over the lease limit. It was actually quite...

# SHOULD I BUY OR LEASE A TESLA? PART 4: It all comes down to your apetities towards risk

Having used multiple spreadsheets to illustrate the dollars and cents around the leasing vs buying option, let me conclude. It depends on how you view uncertainty. As I said...

# SHOULD I BUY OR LEASE A TESLA? PART 2: Total loan cost (when you are sure about the depreciation)

In a previous post, I calculated the total cost of leasing a Tesla, using my own experience as an example. Before we move on to the buying option, let me mention one important...

# Simulation: Is demand equal to sales? (Part II, and why is there a Loch Ness Monster?)

In an earlier post, we discussed the difference between demand and sales using a simulation exercise. Now the question is: How can we visualize the difference? To start off,...

# Simulation: Is demand equal to sales? (Part I)

Consider the following problem: Suppose at a retail store the annual demand for a toy is a random variable with a normal distribution of N(600, 100), i.e., with mean of 600...

# Simulation: It all starts with a coin toss

There are many sophisticated tools dedicated to Monte Carlo simulation, but Excel is powerful enough to handle a variety of simulation needs.  Here are the basic steps of...

# Last-mile Transport is the Key Driver in Supply Chain Carbon Footprint

Does online shopping have a larger or smaller carbon footprint? Well, it depends. But depends on what? In a most recently-published study by Shahmohammadi et al (2020)...

# Carbon Foot printing: Devil is in its details…

I have been reading up on the carbon foot printing work lately. A lot of interesting findings. Overall, my impression is that the modern e-commerce is not significantly...