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Dec 12 2012

Not Just Patriotic, U.S. Manufacturing May Be Smart : NPR

See on Scoop.it – lean manufacturing

The incentives are stacking up in favor of making things at home. As General Electric discovered in its Appliance Park in Louisville, Ky., big things can happen when marketers and designers talk to assembly line operators.

Michel Baudin‘s insight:

Thanks to Kevin Hop for sending me this story. It must be music to Bill Waddell’s ears.

See on www.npr.org

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By Michel Baudin • Blog clippings 1 • Tags: Apple, Enter your zip code here, GE, Insourcing, Outsourcing

Dec 8 2012

Comparative advantage, free trade, and productivity

In a recent post in Evolving Excellence, Bill Waddell pointed out that the economic theory of comparative advantage was wrongfully used to justify outsourcing to low wage countries. The way Bill puts it: “…the theory is based on productivity – not hourly wages.  It is driven by the idea that goods should be made wherever the collective combination of hours results in the overall minimum consumption of human effort…” (http://bit.ly/Uy8yfg)

In an earlier post, Bill cited the economic report of the president in 2010 as defining comparative advantage as the idea, “that nations specialize in producing the goods that they can produce cheaply relative to other goods.” (http://bit.ly/UsT0aA)

David Ricardo
Adam Smith

The comments by readers of  Bill’s post seem to confuse Ricardo’s comparative advantage with the  Adam Smith’s division of labor.

They also tend to confuse low labor costs with low wages, when increasing productivity achieves both low labor costs and high wages. In the 1910s, when Ford started paying workers $5/day, twice the going rate in Detroit, it still had lower labor costs than competitors because its workers on assembly lines were four times more productive.

Ricardo’s own words are easy to check, because the Kindle edition of his Principles of Political Economy and Taxation costs $0.00 and the discussion of comparative advantage starts on p. 92. It is more a case study than a theory, in which two countries benefit from free trade in two products, even though one is more productive at making both than the other.

British cloth

Ricardo’s case is cloth and wine made either in Portugal or England. Both needed less labor to make in Portugal but wine required much less while cloth only slightly less. In this case England was said to have a comparative advantage  on cloth even though Portugal has an absolute advantage on both wine and cloth. The practical consequence is that more wine and cloth are produced overall if England focuses on cloth and Portugal on wine.

Port wine from Portugal

It sounds like a hypothetical example, contrived for the purpose of illustration, and that is what I first assumed it was. It sounded particularly far-fetched, writing in 1817, that the production of cloth should take more labor in industrial England than in Portugal. But it is not a made-up case. It is a real one that unfolded in the century before Ricardo wrote, before the industrial revolution. If we believe the following excerpt from the Wikipedia article about the history of Portugal, it happened as follows:

“The 1703 Methuen Treaty between England and Portugal had both direct and indirect effects on the Portuguese wine industry. The treaty not only stipulated that the amount of duties on Portuguese wines was to never be more than two-thirds that of which was levied on French wines, it also allowed English woolen cloth to be admitted into Portugal free of duty. This second stipulation ended up having a devastating effect on the Portuguese textile industry, leading to huge numbers of shepherds and weavers becoming unemployed. In and around the Douro region, this segment of labor turned to the wine industry and encouraged a boom in vineyard planting.”

Three centuries later, while British textiles are not what they used to be, port wine from Portugal can still be found in liquor stores worldwide. It owes its unique taste to its fortification for sea travel to England, and it is sold under English brand names like Croft or Sandeman, from the British trading houses that used to ship it.

It is a great story, but hardly enough to prove that free trade always benefits all participating countries. It is not easily generalized from two countries trading two products to many countries trading many products, and it is not obvious that it can be used to justify outsourcing. On the other hand, I have applied it in production to the allocation of work among machines with overlapping capabilities.

Ricardo talks about “the labor of 100 Englishmen” as the main measure of the resources consumed in making a product. In the 1700s, labor was the main resource used in production, but, in 2012, labor is only one of many, the others including equipment, tooling, energy, and data, and a discussion focused exclusively on labor would not be appropriate.

So, what metric would you use to represent the total amount of resources used to make a product? The metrics used for this purpose are usually called “cost.” Their calculations involve debatable allocations that are not consistently made even within one country, and equally debatable exchange rates to make international comparisons. You would also use different metrics depending on whether you are deciding where to locate a new plant or how to allocate work among existing plants.

In using comparative advantage to allocate work among machines, the metric was the amount of machine time used per unit of product, which was relevant because we were trying to maximize production for a given mix of products. To minimize WIP instead, you would use a different metric, so as to penalize a machine for processing WIP-generating batches instead of single pieces.

When I first heard of comparative advantage, it was described to me as one of the few economic theories that is neither trivial nor false. And indeed it is, and I believe it makes Ricardo a precursor to today’s Operations Research and Game Theory, but we should be wary of jumping to overly broad conclusions about 21st-century globalization based on the trade of wine and cloth between England and Portugal 300 years ago.

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By Michel Baudin • Management 0 • Tags: Comparative advantage, Economics, Globalization, Productivity

Dec 3 2012

Lean IT Summit 2012 – Were the presentations on topic?

See on Scoop.it – lean manufacturing

What does “Lean IT” mean? Most of those who use this term think of it as the application of Lean principles to the operations of IT companies or departments. To others, including myself, it is primarily about the effective use of IT in support of Lean manufacturing, which is a completely different but very real problems.

The IT departments of manufacturing companies are rarely any help in implementing Lean. The plants’ information systems are full of data about the business and the technology of the plant that is only accessible through the IT department, but its members are busy implementing system upgrades and have no clue what uses this data could be put to.

On the other side are Lean implementers whose computer skills are limited to Excel and PowerPoint, and who underestimate the potential of 21st century IT based on comments made by Ohno in the 1960s.

I looked in vain for any discussion of these issues in the presentations at this summit, although plenty of solutions exist. There could have been, for example, discussions of how data warehousing technology to consolidate data from multiple legacy system into a single, comprehensive source of clean data about product and process specs, the status and history of demand and production, quality, maintenance, inventory, and the supply chain, along with plans for the future.Then it would have been fascinating to hear how tools like the ones Nate Silver applied to US presidential politics could be applied to identifying patterns in this data could be used to allocate products among families and size production lines for each  family…

We could also have heard about Lean implementers breaking out of the Excel/PowerPoint box, learning how to design and query databases, and how to judiciously apply data mining tools.

This is about making IT effective, and it should be job one. Then we can worry about applying Lean internally to IT department to make them more efficient.

See on www.lean-it-summit.com

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By Michel Baudin • Blog clippings 0 • Tags: Information technology, IT, Lean IT, Lean manufacturing

Nov 30 2012

HBR doubles down on MBO

See on Scoop.it – lean manufacturing

The Harvard Business Review, on its 90th anniversary, equates good management with having long-term goals with tough but achievable short-term performance targets, financial incentives to reward high performers and punish underperformers, and a monitoring system to rigorously collect and analyze performance data.
If you don’t have these things, then, by definition, your company is badly managed. After conducting a worldwide survey, the article’s authors concluded that, indeed, most companies are.
Management By Objectives, anyone? I thought we were moving past that debate.
See on hbr.org

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By Michel Baudin • Press clippings 1 • Tags: HBR, Management-By-Objectives, MBO

Nov 30 2012

Bezos: Amazon Web Services is lean manufacturing for IT

See on Scoop.it – lean manufacturing

As the father of Amazon, Jeff Bezos deserves enormous respect, and his statement linking Amazon Web Services to Lean is a homage to Lean worth listening to. With all due respect, however, the connection, as described in his own words, is a stretch. Many businesses pay attention to customers and to the quality of their goods and services, but that is not enough to make them Lean.
“AWS is […] akin to Toyota’s lean manufacturing methods, Bezos said. Why? Both AWS and lean manufacturing aim to remove defects closer to the source.
This lean manufacturing approach to IT — with AWS as a building block, of course — means application developers and data center costs are increasingly aligned. ‘The data center has been an application-free zone for developers. You write code and you have no idea how much it consumes,’ Bezos said. ‘One of the most unappreciated benefits of AWS is that developers get a real sense of what’s really driving the cost.'”
See on news.cnet.com

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By Michel Baudin • Press clippings 0 • Tags: AWS, Bezos, Lean

Bureaucracy_box_art

Nov 28 2012

Deming’s Point 9 of 14 – Break down barriers between departments

(Featured image from the  Bureaucracy game, by Douglas Adams)

Deming’s complete statement of Point 9 is as follows:

“Break down barriers between departments. People in research, design, sales, and production must work as a team, to foresee problems in production and in use that may be encountered with the product or service.”

Within a large organization, it is common for departments to work at cross purposes. Each department is a functional silo, working towards goals that may be inconsistent with the interests of the whole. Deming gives many examples of disasters that occur as a consequence, and exhorts his readers to break down the barriers to keep them from happening. As with his other points, he makes no recommendation on how to accomplish this.

Let us examine several approaches that have been tried, and the issues that organizations encountered when they did:

  • Eliminating silos in the organization
  • Making functional departments work
  • Obstacles to organization by process or value stream
  • Skills maintenance, continuing education and career planning
  • Project transitions

Eliminating silos in the organization

This is not a problem for small companies. As long as the entire management team fits within a small conference room, there are few opportunities to erect barriers. In a large company where it is a problem, the most obvious solution is to organize by what is variously called business teams, business processes, value streams, or focused factories.

You dissolve the functional departments and organize multifunction teams that bring all the required talent to bear on the core activities. In a manufacturing company, for example, all the resources needed to make a family of products from start to finish — including engineers, maintenance and quality technicians, schedulers, etc. — report to one “value stream manager,” and there cannot be barriers between silos because there are no silos.

It’s like the Mission Impossible TV series, with the disguise specialist and the explosives expert working together towards a common goal, as opposed to being in separate facilities and exchanging service requests in triplicate. This is a popular picture in the US and the approach is often used in a variety of contexts, such as emergency response, as in Apollo 13, or product development, for Data General’s MV-8000 computer in 1980 in Tracy Kidder’s The Soul of a New Machine, or the 1996 Taurus at Ford in Mary Walton’s Car.

The movie Apollo 13 shows a seemingly too-good-to-be-true team that is thrown together to find a way to fit the square connector of the command module air scrubber to the round hole used on the lunar module, using nothing but the odds and ends available to the astronauts on the crippled spacecraft. But the story is true, and we have a picture of the actual device the astronauts built.

This was the philosophy of Business Process Reengineering (BPR). Each business was to be broken down into processes turning some input into an externally visible output. Manufacturing, in BPR, did not qualify as a process. Instead, it was subsumed into the order-fulfillment process.

Making functional departments work

But it is not a panacea. The development of the 1996 Taurus took 30 months, and it was a major improvement over previous products at Ford, but still not down to the 24 months used at Toyota for the Rav4, and Toyota uses a traditional structure with functional departments communicating through memos.

In addition, according to Mary Walton, Ford’s integrated, collocated team made design decisions that made manufacturing more difficult. She explains in particular that the sculptured shape of the side panels made them more difficult to stamp, and this happened even though manufacturing was represented in the team. As a work of art, the 1996 Taurus was stunning. As a commercial product, however, it was lackluster, losing the previous versions’ bestseller status in the US market to the more “boring” Honda Accord and Toyota Camry in 1997.

The reality is that organization structure does not determine outcomes. The caliber of the individuals, their motivations for the roles they are playing, and their interaction protocols are at least as important. In their July, 1998 Harvard Business Review article , D.K.Sobek, J. Liker, and A.C. Ward listed the following practices as key to Toyota’s performance in product development:

  1. Written communication with single-sheet A3 reports in standard formats.
  2. Engineering supervision by practicing, hands-on engineers.
  3. A chief engineer (shusa, or 主査) for each project who is an experienced designer with a proven ability to integrate different technologies into a product. The shusa has a team of 5 to 15 members coordinating the work of hundreds who remain in functional departments.
  4. Engineers who develop their skills through on-the-job training, mentoring, and rotation within their functional department, with senior managers rotating between departments.
  5. High-level project plans with a small number of milestones, giving each department flexibility on detailed tasks.
  6. Checklists of design standards embodying the lessons learned in previous projects.

Obstacles to organization by process or value stream

The Toyota example is about product development. But what about other activities like operations? When you attempt to organize everything by business process, or by value stream, in most cases you encounter some functional departments that you technically cannot or should not break up.

Most machine shops have a central heat treatment facility. Induction hardening can, for some work, distribute heat treatment among different production lines and break down the “heat treat silo,” but a given shop may make products to which it is not applicable, its customers may not approve the process, or it may not have the skills or resources to implement it. Electroplating and painting commonly are similar challenges. As a result, the plant ends up with a few common services organized as functional departments along with lines that take a family of products through a sequence of operations.

Among support functions, the picture is also mixed. Production scheduling at the detailed level, for example, works better when the schedulers work directly for the manager of a production line than in a central department, because local scheduling is a simpler problem and the relevant specifics of machine behaviors are more accessible. On the other hand, breaking down a maintenance department and making the technicians report to production managers may not enhance their responsiveness when, for example, the group assigned to a line is short of the critical mass needed to have at least one technician standing by for the next emergency.

Other departments remain organized centrally because of the information they have access to, like Human Resources, Accounting, or Technical Data Management; others, because of external entities they deal with, like Shipping and Receiving.

Skills maintenance, continuing education and career planning

When breaking down a functional department and reassigning its members to teams organized around processes, we also need to consider how it affects the people to whom we do it. Professionals like medical doctors or lawyers work for clients who have little or no knowledge of their specialties, but it is then up to them to decide how much of their revenue to spend or maintaining their skills. They choose which magazines tp subscribe to and which conferences to attend, without asking anybody’s permission.

An engineer reporting to a production manager also works for one “client” who does not have the same expertise, but as an employee. If this engineer wants to attend a conference, the first step is to get approval for the time and money it will consume, from a manager with no knowledge of whether it is a good idea.

In the long term, what career does this engineer have to look forward to? The manager needs the engineer’s skills here and now but is ill equipped to provide guidance, compared to an engineering manager whose background and experience are in the same field.

For this reason, some companies have adopted matrix organizations, in which specialists report “solid-line” to a process owner who needs their skills in operations or on projects, and “dotted-line” to a functional manager for skills maintenance and career development. In a diagram, as follows, this structure looks simple and attractive:In reality, of course, it is a more complex form of organization than a simple hierarchy, and conducive to all sorts of tensions regarding authority and responsibility.

Project transitions

Project work — like product development, new product introduction, or new plant setup — differs from operations in that it ends when a goal is reached, which may be a working prototype, a target takt time in production for the new product, or for the new plant. At that point, the teams are disbanded and their members move on.

This is a particularly sensitive transition to manage when you collocate a multifunction project team in one big room, because its members bond both with the project and with each other, and receive the ending like a psychological blow on the scale of the loss of a family member. This is another reason why they need to retain a connection with their functional peers.

Conclusions

Breaking down barriers between departments for the greater good of the organization as a whole is a worthy goal, that high-level managers have been pursuing since, at least, the Roman empire. There is no simple recipe. The approaches followed by successful organizations have been subtle, nuanced, and fitted to their purposes.

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By Michel Baudin • Asenta selection, Deming 2 • Tags: A3, Deming, Focused factory, Functional department, Job rotation, Silo, Value Stream

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