Friday, September 19, 2014

Why is cash so popular in for transactions in Germany?

In a world where more and more transactions are handled by credit or debit cards, why do people hold cash?  Cash is needed in some establishments that do not accept cards.  It also is difficult to trace, making it the payment mechanism of preference for those who wish to leave no record of their purchases.  However, cash carries significant downsides.  You can lose it or have it stolen.  It pays no interest.  Governments can debase its value by printing too much of it.  

It came as no surprise to me that half of Americans carry $20 or less in cash.  I expected this would be the case in most other high income countries.  I was wrong.  

It turns out that Germans still rely heavily on cash and this has been the case for some time.  They carry around an average of $123 in their wallets and conduct 80% of their transactions in cash.  This cannot be explained in terms of simple economic factors.  For instance lower interest rates would lead to increased cash holding, but interest rates in Germany and the US are pretty close to each other.   

Some sources argue that the German preference for cash reflects the hyperinflation of the 1920s.  But most of the people who lived through that event are no longer around.  (Also, if there was ever a time to minimize cash holdings, that was it.)  Another possibility is that debt avoidance is integrated into German culture; always paying in cash is a good way to avoid ballooning credit card bills.  

We may see a clash of culture with technology soon, as mobile payment systems become more widely available.  Will paying by phone be viewed as equivalent to paying in cash?

Thursday, September 18, 2014

NC State Jenkins ranked #15 Supply Chain MBA

The annual Gartner survey is the gold standard for ranking supply chain programs.  This year's ranking just came out and NC State's Jenkins MBA placed #15 in the US.  Penn State was #1, followed by Michigan State and Tennessee.  NC State was the only program in North Carolina in the top 25.  

Gartner's rankings are based mainly on two factors: Gartner's own evaluation of the curriculum and the success of graduates in the job market (measured by employer surveys and salaries).  This is great recognition for our supply chain program.  

Tuesday, September 16, 2014

Will MBA programs become unbundled?

Poets and Quants editor John Byrne has an interesting piece in USAToday regarding how technological disruption is likely to affect MBA programs.  Right now a good MBA program is a bundle of services that create value for students.  It starts with instruction from great professors, but also includes career coaching, networking with alumni and fellow students, and placement services.

MOOCs already threaten the instruction part of the bundle.  In the not-to-distant future, business students will be able to obtain certificates of completion for all MBA core subjects plus a mix of electives in mainstream subjects such as finance and marketing.  Byrne thinks that free MOOCs will quickly put MBA programs that lack strong career services and networking out of business.

Byrne does not address the possibility that other providers will step up and provide coaching, job contacts, and networking.  Students pay a hefty premium to get into the very top MBA programs.  The academic content of the core MBA courses is pretty much the same across all institutions, which implies that the perceived value of the nonacademics is driving the price premium.

This leaves open the question of how communication and leadership skills are developed.  These skills are #1 on the list of MBA recruiters.  Many of the top schools restrict admission to students with strong skills in this dimension; employers use a degree from those schools as a signal that the student possesses those skills.  Other schools invest heavily in training that changes student behavior.

My take: I am skeptical that MOOCs will be very helpful for developing the so-called "soft skills." Schools that take those skills seriously should be able to stay in business, and perhaps even prosper.

Sunday, September 14, 2014

Employers taking longer than ever to fill positions

Just ran across this WP blogpost by Catherine Rampell that shows the average vacant job stays open 25 days.  There is tremendous variance by industry.  Construction positions are filled within 10 days, whereas finance positions take 40.  Want a good example of diseconomies of scale?  Firms with 5000 or more employees take 68 days!   

Vacancies are at the highest level in the history of this since data series that goes back to 2001.  One might interpret this as another sign that the labor market is tightening, although this is inconsistent with the extremely modest wage growth we are observing.  Another interpretation I am seeing is that corporate America has unrealistic expectations of job applicants and would rather invest in finding the ideal person than train someone else.  This might be a rational strategy at a time when employment still does not seem to be growing very much.  

Wednesday, September 10, 2014

How top execs view competitiveness

This week Harvard Business School issued its third annual survey of how its alums view American competitiveness.  In a nutshell they are still pessimistic but not as pessimistic as one or two years ago.  Alums working in large companies were more optimistic than those in small companies.

What do they think is going well?  They speak fondly of universities, entrepreneurship, firm management (a little self-serving?), innovation, capital markets, and property rights.  They speak less fondly of K-12 education, regulation, tax code, and the political system.

A strong theme that emerged from the survey was that although businesses are doing well (hello S&P 500 at 2000), most households have yet to share in the recovery.  In addition to shoring up K-12, the report points to the need for businesses to rethink their hiring processes and to invest more in training.  One point I particularly liked is the need to stop talking about labor markets in the aggregate and a need to focus at more micro levels, such as workers in a particular occupation, industry and location.  

If you are not up for the full report, you might find this Fortune interview with one of the lead authors Michael Porter worthwhile.  I was actually one of Porter's first graduate students at Harvard all too many years ago.

Sunday, September 7, 2014

What do you do with Google Fiber?

NYT reports on Kansas City's experience with Google Fiber to date.  The service costs $70 for broadband and another $50 for television.  The take-up rate has been reasonably high: three fourths of households in areas with average income of $100k or more have signed up, as have a third of households in low income areas.  Speed is blazing at one gig per second.  

So what are customers using all of this high powered service for?  The same stuff they do on regular systems, of course!  (The article has lots of snarky comments about how many kitten photos can be downloaded.)  This is no real surprise as no one is likely to develop high-powered apps that only can be used in the few cities that have Google Fibre.  

For there to be network externalities, there needs to be a broader network.  In time I would imagine that high-def two way video, sharing of medical data, and connecting schools will be taken for granted.  The world of work is likely to change as well, making work at home more viable.  One added bonus: another competitor for Time Warner!

Viva Google Fiber; come to Cary ASAP!

Friday, September 5, 2014

Do skills matter more than degrees?

Two sociologists did a study four years ago of how much learning takes place in college, and the results were not encouraging.  Scores on the Collegiate Learning Assessment were only half a standard deviation higher for seniors than they were for freshmen.  To use statistical terms, you cannot reject the null hypothesis of "no learning takes place."  The results were not uniform; those in the arts and sciences learned more than those in business and communications.

Now they have done a follow up study of how these 2009 graduates did in the labor market.  The results, summarized in NYT, show that those with the highest scores have done the best professionally.

Even after statistically controlling for students’ sociodemographic characteristics, college majors and college selectivity, those who finished school with high C.L.A. scores were significantly less likely to be unemployed than those who had low C.L.A. scores. The difference was even larger when it came to success in the workplace. Low-C.L.A. graduates were twice as likely as high-C.L.A. graduates to lose their jobs between 2010 and 2011, suggesting that employers can tell who got a good college education and who didn’t. Low-C.L.A. graduates were also 50 percent more likely to end up in an unskilled occupation, and were less likely to be satisfied with their jobs.
Overall the college graduates in this study still did much better than their counterparts who did not finish college.  But once again, this study shows that employers hire and reward for skill not credentials -- an important message for faculty, administrators, and students.  

Saturday, August 30, 2014

NC State Jenkins ranked #17 online MBA

Poets and Quants, the #1 MBA blog, has just issued its ranking of the top online MBAs and the NC State MBA comes in at #17.  Carnegie-Mellon is #1, followed by UNC-CH, Indiana, Maryland, and Penn State.  More great recognition for our up-and-coming program!

Friday, August 29, 2014

Why airlines cancel flights

Many of you will be on a plane this Labor Day weekend; 1.5% of you should expect your flight to be cancelled.  Amy Cohn, an industrial engineering professor at Michigan (a great university with unfortunate choices in school colors and mascot), explains the logic behind flight cancellations in this New Republic piece.

Simple economics would focus on marginal revenue and marginal cost.  That is, if the savings in jet fuel and labor hours offset the costs of rebooking passengers then it makes sense to bump the flight.  For instance if there are 8 am and 10 am flights from Raleigh to Detroit and both are half-empty, it makes sense to cancel one.

Cohn points out that network effects need to be considered.  The 8 am flight to Detroit is likely to go on to as many as eight other locations by the end of the day, all of which can be messed up by a cancellation.  Also, flights now are much fuller than they were 20 years ago, so rebooking can be quite expensive for the airlines in terms of bumping would-be passengers who would have paid a hefty premium to book a last minute seat on a later flight.


Thursday, August 28, 2014

Kudos to the Fed

Chicago Booth finance expert (and all-around free-market kind of guy) John Cochrane has a great WSJ piece on how and why the Federal Reserve Board has made the right call on a set of very big decisions.  If you happen to run into a politician ranting against the Fed, I strongly encourage you to ask him/her how he/she disagrees with Cochrane, a world-class finance expert who expresses his views on his well-read blog Grumpy Economist.  My guess is that you will not get a straight answer.