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economy
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The Transportation sector is much larger than the entertainment industry… but why do people think the other way?

This is a simple post about building the right perspective on sizes of different industries. I was listening to one of favorite supply chain management podcasts...
manufacturing
operations management
supply chain
video

How the consulting world screwed up the ‘Lean’ Idea

The lean idea was started by Toyota in the war-torn Japan in the 1950s, almost by necessity. It turns to be very effective and helped Toyota grow and even dominate the world...
ExcelProf.com
analytics
data
statistics
tutorial
video
work efficiency

Excel trick: Search for multiple keywords from a list

Recently I was given a large spreadsheet with people’s expertise written in long phrases, and I had to identify those people who have AI-related expertise. The issue...
life
video

Sometimes change is good just for change’s sake

“If you move a tree, it will likely not survive. But if you move a man, he will most likely thrive.” It is an old Chinese saying. And over the years I came to...
operations management
strategy
video
work efficiency

An successful entrepreneur is a technician, manager and entrepreneur in one

A lot of people start their own businesses because they like doing a particular thing (baking, cooking, designing, selling), but very often they realize there are so many...
life
video

Value Investing is about learning about everything

I had not paid much attention to the concept of value investing, as I thought I know everything there is to it: Do not chase fads. Invest in companies with solid money-making...
analytics
data
tutorial
video
visulization

Excel Trick: Import Data From a Picture!

Have you ever looked at a table in a PDF file (or a picture) and wanted to import it into Excel? This video tells you how! As shown in the short video, this function is not...
analytics
tutorial
video
visulization
work efficiency

Clustered bar chart and stacked barcharts, switch rows/columns, overlap and customize shapes

Bar charts are one of the most frequently used charts. To use them effectively to generate on-the-point graphs that deliver exactly the right message, however, requires some...
Blockchain
data
video

How to think about the user cases for Blockchains: A whole spectrum of access control

These days I have been reading and thinking a lot about where to apply blockchain technology that makes most sense. That is, what are some of the user cases where it is...
Blockchain
Ethereum
video

The fundamental problem of governance with DApps (Distributed apps)

I have been studying DApps (Distributed apps) lately. They turn out to be super interesting. First, I am amazed by the grand vision behind the design of the Ethereum...
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Recent Posts

  • The American Civil War was a War on Supply Chains
  • The Transportation sector is much larger than the entertainment industry… but why do people think the other way?
  • How the consulting world screwed up the ‘Lean’ Idea
  • Excel trick: Search for multiple keywords from a list
  • Sometimes change is good just for change’s sake
  • Google Colab is an awesome Python programming tool for AI and data analysis
  • An successful entrepreneur is a technician, manager and entrepreneur in one
  • Shakespear in Business
  • Google NotebookLM is a great tool
  • Why China’s Economy is in Trouble
  • Platform or Specialization? Maybe it is both
  • Value Investing is about learning about everything
  • He was rejected by 90% of the investors
  • Why is Africa Poor? Social Intuitions
  • Will Robots kill human jobs? Yes and No
  • EV has come a long way but US is falling behind
  • The US Economy is Changing in its structure
  • Democracy and Prosperity
  • Decarbonizing Last-mile Logistics: A quick summary
  • EVs with 500+mile range? Maybe a hybrid with a large battery and small engine is better for the market
  • Vacation is a state of mind
  • You just have to hustle
  • Why should we improve public transit?
  • Why do we need to fix the T?
  • Should I Buy or Lease a Tesla Part 6: The Saga Continues
  • India has the potential to overtake China as the world’s manufacturing hub, even though it may take a while
  • How has the work-from-home world affected the environment?
  • How do sustainable supply chains improve the continuity of supply and protect the environment?
  • Tesla’s ticking time bomb?
  • China’s recent covid debacle reveals incompetent and factious management
  • Top 10 Bio-pharmaceutical Regions in the US by Numbers
  • Electric airplane makes sense for one simple reason
  • EV Charging Networks: The Top 8
  • EV prices 2022 (I): The Distribution
  • Choosing the right fuel (III): Whose perspective?
  • Choosing the right fuel (II): Total cost
  • Choosing the right fuel (I): fuel and carbon cost
  • Steps to calculate the carbon footprint of a supply chain
  • EV Fast Charging in the US is becoming better but still has a long way to go
  • The Multiplier Effect of Manufacturing: Where Jobs Come From
  • How large is the supply chain economy? The answer may surprise you
  • So Ford Wants to Do Away with its Dealers…
  • How much do you pay charging an EV on a monthly basis?
  • Excel Trick: Import Data From a Picture!
  • EV in 2022 and Beyond: More Good News, but Uncertainties Too
  • What will happen to Zoom?
  • If Facebook (Meta) disappeared 3 years from today (in 2025), I will not be surprised
  • Clustered bar chart and stacked barcharts, switch rows/columns, overlap and customize shapes
  • Are we still ignoring data in making covid-related decisions?
  • Do you really need a Power button for an electric car?
  • How to think about the user cases for Blockchains: A whole spectrum of access control
  • The fundamental problem of governance with DApps (Distributed apps)
  • A Great Discussion on International Trade and Blockchain
  • A Fascinating Recount of the US Semiconductor History
  • A Small Innovation, A Big Saving for the Environment
  • Things I learned When Lighting a Fire
  • Zillow’s Failure in Housing Flipping is a Classic Example of Ignoring Bottlenecks and Variabilities
  • How to Revive the Semiconductor Manufacturing Industry in the US
  • What is the Supply Chains of the Future?
  • A Tale of Two Chains: Supply Chain and Blockchain
  • Port of LA: Storage Space is the culprit?
  • Why Additive Manufacturing (or 3D Printing)?
  • Why Supply Chain Delays are Multi-faceted: A Mathematical Explanations (Without the Heavy Math)
  • Green Ammonia is a promising renewable marine fuel
  • EV is not just about making cars. It is about the Supply Chain.
  • Understanding CO2 Emissions for different freight transport modes (renewable as well as non-renewable)
  • The One and Only Michael Dell
  • Tesla Lease Mileage Limit and the Central Limit Theorem
  • Daniel Pink’s “When” is an Illuminating Book Towards High Productivity and Better Living
  • SHOULD I BUY OR LEASE A TESLA? PART 4: It all comes down to your apetities towards risk
  • SHOULD I BUY OR LEASE A TESLA? PART 3: It is not black-and-white (because we do not know the future)
  • SHOULD I BUY OR LEASE A TESLA? PART 2: Total loan cost (when you are sure about the depreciation)
  • Should I Buy or Lease a Tesla? Part 1: Leasing Cost
  • A great article on this thing called “supply chain shortage”
  • How to draw ranking data properly
  • Simulation: Is demand equal to sales? (Part II, and why is there a Loch Ness Monster?)
  • Simulation: Is demand equal to sales? (Part I)
  • Simulation: It all starts with a coin toss
  • Carbon foot-printing problem is first of all an information problem
  • Last-mile Transport is the Key Driver in Supply Chain Carbon Footprint
  • Elon Musk Gets Manufacturing
  • Road Transportation is the Single Largest Decarbonization Opportunity with a Clear Path Forward
  • Carbon Foot printing: Devil is in its details…
  • The Sustainability Perils of E-commerce (II): Fast and Furious (Fuming)?
  • Excel Pivot Table Trick: Drawing Charts Using Only Part of the Pivot Table
  • The Carbon-reducing Effect of E-commerce Delivery
  • The sustainability peril of E-commerce (I): Small batches lead to more emissions
  • Two-way Data Table in Excel is a great tool for sensitivity analysis
  • The Dawn of the Modern Power Grid Started Right Here in Massachusetts (and It was Clean Energy!)
  • Measuring the Carbon Footprint of a Supply Chain: 3 Scopes
  • Zero-Carbon Economy: A Grand -and Necessary – Vision
  • More power lines, or rooftop solar panels? There is no easy answer (but here is a way to think about it)
  • ICCT’s Report on the Lifecycle Comparisons of GHG Emissions of Gas Cars vs. EV is Filling a Void
  • The Most Factual and Poignant Article on the Failure on COVID Data Collection and Interpretation (So Far)
  • Modeling Driving Distances (3)
  • Modeling Driving Distances (2)
  • Modeling Driving Distances (1)
  • Digital Technology and Clean Energy
  • Range Anxiety for Electric Vehicles (EV) – Part I
  • Small change in mean can result in big change in extremes
  • Why Hasn’t Anybody Done This Graph about COVID-19?
  • Wow What a Great Data Site
  • Excel Shortcut Keys (2020 Edition)
  • How to Provide Electricity Access to Rural Africa: An Example
  • Why is Chick-Fil-A Picking up Market Share (and Why is McDonalds Testing Robot Fryers and Voice-Activated Drive-Through)?
  • Filter Data Right in your Pivot Table Fields!
  • Sensitivity Study (or Scenarios) with Data Table
  • PivotTable: Calculated Fields
  • Dashboard with PivotTable
  • Data Slicer and Timeline are Useful Reporting Tools in PivotTable
  • How to Draw a Combo Chart, i.e. Chart with 2 Y-axis, and Change Chart Type on a Mac
  • How much gasoline do we American consumers buy each week? An Example of Excel Modeling
  • Most Used Excel Shortcut Keys – Mac and PC
  • How to Draw a 3-D Chart
  • Chance of Nothing Happening? The Power of Joint Probabilities
  • This Site Has Abundant Climate Data
  • Here is Another Example on Why Excel will Never Go Away – Julia Computing
  • Tesla Needs to Be More Rigorous in Discussing Numbers
  • What (and when) are the most popular US cities to visit?
  • Google Sheets is Catching up with Excel in Charting
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