Thursday, May 22, 2008

How to Sell Services More Profitably

How to Sell Services More Profitably

Product companies often try to differentiate themselves by offering ancillary services. Many struggle to make money at it.

by Werner Reinartz and Wolfgang Ulaga

Manufacturers frequently believe that adding value in the form of services will provide a competitive advantage after their products start to become commodities. When the strategy works, the payoffs are impressive, and a company may even discover that its new service business makes more money than its products. But for every success story, at least five cautionary tales remind us that manufacturing companies will most likely struggle to turn a profit from their service businesses.

Even the best stumble. Consider one large technology firm we studied—a world leader in medical equipment, IT, automotive equipment, and transportation systems. Back in 2003 the company’s €5 billion IT business unit realized that the limited product-related services it offered, such as installation and training, generated twice the 3% to 4% net margins it earned on its increasingly commoditized product offerings. The unit decided, therefore, to invest heavily in developing its service capabilities for large clients. Managers estimated that such customized services would soon generate margins of 15%.

The estimate proved very wide of the mark, and the unit recorded a negative net profit margin of more than 10% in 2005. The venture was a serious loss-maker, costing the group around €260 million in 2005 alone. The losses stemmed from several distinct causes: First, the company found that the back-office production of complex services was much more difficult than expected. Each client’s requirements were highly customized, which meant that little learning and knowledge could be leveraged across cases. Second, the salespeople were used to selling products with basic service contracts attached, and their traditional contacts at target firms were too low in the hierarchy to make decisions about multimillion-euro solutions contracts. Third, much of the knowledge around the service production had to be sourced externally—which proved time- and resource-intensive. The board member responsible for services was frank about the mistakes: “We wanted too much too soon, and we simply weren’t ready for it.”

Over the past three years we have investigated how manufacturers in business markets can develop profitable services. We conducted in-depth studies of 20 industrial companies operating in a broad variety of product markets, including adhesives, automotive coatings and glass, bearings, cables and cabling systems, energy generation and distribution, onboard electronics for civilian and military aircraft, printing presses, and specialty chemicals. Every firm was among the top three in its industry, and the managers we interviewed were all key decision makers, frequently executive board members. Throughout the process we interviewed multiple people in different business units and country organizations. We went on to have discussions with more than 500 B2B managers in a series of executive workshops; these complemented the insights from our interviews.

As our research process unfolded, we uncovered a wide variation in revenues and profits from service offerings. One group of companies derived up to half of their sales from services, and margins up to eight times those on product sales. A second group reported a very different experience: Although those companies had made significant investments in the development of services, customers proved unwilling to pay, revenues were low, and the companies barely broke even. Comparing the two groups, we were able to identify clear differences in the ways they had developed their service businesses.

Like the technology company in our example (which has since turned itself around in this respect), companies unsuccessful at developing service businesses have tried to transform themselves too quickly. Successful firms begin slowly, identifying and charging for simple services they already perform and using those to build enthusiasm for adding more-complex ones. They then standardize their delivery processes to be as efficient as their manufacturing ones. As their services become more complex, they ensure that their sales force capabilities keep pace. Finally, management switches its focus from the company’s processes and structures to the nature of customers’ problems, the opportunities that customers’ processes afford for inserting new services, and the new capabilities needed to deliver those services. (See the exhibit “The Path to Profits in Industrial Services.”) Let’s take a closer look at those four steps.

1: Recognize That You Are Already a Service Company

Many product companies are in the business of delivering services; they just haven’t realized it yet. These companies are missing out on the revenues they could generate simply by charging for what they already do. The first step in expanding a service capability is to make both the company’s managers and its customers aware of the value provided by existing services.

Take the pharmaceuticals giant Merck. In one of the company’s product categories, its French subsidiary had a long-standing tradition of including delivery in its product price for customers. Because specialty chemicals are high in value but low in volume, Merck had never questioned its responsibility to assume transportation and insurance costs, which represent a tiny fraction of the amount invoiced. And because no shipping costs were itemized, customers were unaware of the value Merck provided. A few years ago the company put this tradition to a test: Managers randomly selected 100 customers and changed the terms of delivery from “shipping and insurance paid” to “ex works,” though the bottom line barely changed. Ninety percent of those customers readily paid the additional charges, seemingly without noticing. Of the 10% that recognized the change, only half insisted on returning to the prior terms of payment. Merck re-established the original terms for those customers—but it had succeeded in managing the transition from “free to fee” for the other 95%. Once the new billing terms had been rolled out to the entire customer base in France, Merck’s profitability in this product category improved significantly, even though the cost to customers was minor.

Switching services from free to fee clarifies the value of the assets involved for both managers and customers. The French gas provider Air Liquide also took this tack. The company had traditionally purchased millions of cylinders in which to transport small quantities of gas to industrial customers. It charged customers only for the gas delivered, supplying the cylinders free. Consequently, customers took no special notice of how many cylinders they had accumulated, and the company was stuck with considerable floating inventory. Starting in the mid-1990s, however, Air Liquide charged a small rental fee of €5 to €7 per cylinder per month. Not only did this turn a profit drain into a profit engine, generating several hundred million euros a year in fees, but it created customer awareness. Once the gas cylinders had a price tag, customers wanted to optimize their inventories. As a result, Air Liquide was able to sharply reduce its floating inventory, transferring cylinders from customers that didn’t need them to customers that did.

Large companies can uncover profitable existing service offerings simply by comparing billing practices across their operating units. We found that at Nexans, the world’s leading cable manufacturer, subsidiaries in some countries were charging customers a fee for cable drums, whereas in other countries they were not. Nexans holds large inventories of high-voltage cable in order to ensure rapid delivery; applying the fee across the whole company represented a significant opportunity to recoup its investment in working capital.

Smart companies will put a senior executive in charge of looking at practices in other business lines to uncover hidden services. He or she can then start crafting a forward-looking strategy for services on the backs of early wins. By giving the process an owner early on, companies can ensure that their service initiatives are not just opportunistic ideas developed by individual business units but part of a strategy to capture best practices and roll them out across the organization. Schneider Electric, a French electrical-equipment company, chose this route. Early in its move toward services it created a strategic deployment and services division whose executive vice president was charged with auditing existing services across the organization and then creating a coherent strategy for offering new services. An executive board member with 20 years of experience in the company was named to the post.

2: Industrialize the Back Office

Manufacturers are accustomed to stable and controllable production processes. But when they venture into value-added services, they may find front-office service customization turning into a delivery-costs nightmare. Unless they can prevent this, their service margins will suffer. One of the managers we interviewed explained, “To earn money in services, you need to industrialize the back office. Companies like GE and IBM really are process freaks.”

The German printing-equipment maker Heidelberger Druckmaschinen (Heidelberg) has experienced a back-office dynamic that can occur when manufacturing companies move into services. In France its customers currently choose one of two ways to maintain their printing equipment: pay-as-you-go, in which case Heidelberg sends an invoice for parts and labor each time a field technician responds to a customer’s call; or a full-service contract, in which case customers have access to a help desk, remote monitoring, and preventive maintenance. The trouble is that full-service customers call for assistance twice as often as pay-as-you-go customers. And because those customers have no reason to monitor costs, Heidelberg’s field technicians replace spare parts on their printing presses much more readily, make on-site visits to them much more frequently, and are likelier to schedule those visits poorly or to forget essential equipment, necessitating yet more visits. (The technicians, for their part, tend to assume that all costs are covered by the hefty full-service fee.) All this erodes Heidelberg’s margins on the full-service contracts, making them less profitable than pay-as-you-go.

There are three ways companies can prevent delivery costs from eating up their service-offering margins. First, they can build flexible service platforms that meet customers’ varying needs while relying on common delivery processes, much as good manufacturers create distinct product models based on standard product platforms. One of our interviewees explained, “We offer six different types of maintenance contracts. Eighty percent of customers fit into one of these boxes. The customer can look at these offers and see which of them best matches his situation.”

Second, the successful firms in our study continually monitored the costs of their processes to identify profit drains. Air Liquide appointed an executive with specific responsibility for trying to standardize services in the organization. Backed by top management and supported by an internal task force, this executive taught managers and frontline employees in operational units how to systematically take costs out of service production and delivery processes while making sure that customers still got what they expected. For example, Air Liquide regularly mailed gas-consumption reports to its customers. But when the standardization team reviewed this practice, they found that some customers made no use of the information. By discontinuing that part of the service package for those customers, Air Liquide was able to reduce its costs to serve selected customers while maintaining the perceived value of the service provided.

Third, successful companies are quick to exploit process innovations made possible by new technologies. The Swedish bearings manufacturer SKF helps customers extend the service life of their equipment by enabling off-site access to an electronic monitoring tool via a secure internet browser. Vibration-analysis data, for instance, can alert a customer early about potential machine failure. Such smart services allow the company to perform first-level maintenance without deploying field technicians for on-site visits.

3: Create a Service-Savvy Sales Force

As long as a company considers services to be an add-on to existing products, its sales force—with some training, of course—will probably be able to handle both product and service sales. But if companies are to move away from straightforward product-related services into more complex customer solutions, managers must take a new look at sales management strategies. Services require longer sales cycles, and the sales process is often more complex and strategic, meaning that decisions are made high up in the customer’s hierarchy.

Failure to recognize this challenge got Heidelberg into trouble. In the early 2000s the company started offering its customers remote monitoring of their printing presses—to be sold as an add-on, because the service could save customers many hours of expensive machine downtime. On average, one hour of downtime in a print shop can cost several hundred euros; given that the lead time for delivering spare parts to a customer’s site is typically 24 hours, a single breakdown may cost thousands. Heidelberg priced its new offering significantly below this amount, but customers did not bite. The problem was that although the company’s sales force and field technicians were well equipped to promote standard service contracts, they weren’t up to explaining more complex customer solutions—largely because they were accustomed to discussing terms with people in procurement (who tend to focus on cost per part or per service) or people in charge of in-house maintenance (who might view a service offering as a threat to their jobs). What Heidelberg needed was a sales force that felt comfortable talking to production managers—people who would see the implications of the new service for the total cost picture.

Product salespeople are often actively inimical to change, as Air Liquide quickly discovered when it started offering services. Top salespeople argued that margins from the firm’s traditional product business were already high enough and that the company still had room for growth in its existing product markets. Services were labor-intensive, would tie up considerable financial resources, and could harm product sales if the company failed to deliver on its promises.

The successful manufacturers we studied all took pains to retrain their sales forces. In a major overhaul of its sales organization, Schneider Electric switched the focus of its salespeople from cost-plus pricing to value-based pricing when promoting its services. This involved educating them about how their customers’ managers justified decisions internally, so that the salespeople could help the managers they dealt with take more responsibility for shaping decisions. But even after extensive training, companies may find that they have little choice but to fire and hire; a few in our study replaced 80% of their existing sales forces. Even those that managed to retain a significant proportion of their people still needed some specialized newcomers. Air Liquide hired several agri-food engineers to develop sales expertise for services in food-processing industries across Europe. The French forklift manufacturer Fenwick recruited specialists at the corporate level and in each of its regional sales offices to promote services attached to tri-directional forklift trucks. A good place to find this talent internally is among service-support staff members.

Most of the successful companies we studied made some kind of distinction between product and service salespeople. At GE Medical Services, for example, product salespeople are “hunters,” expected to go out and get orders for new equipment. Service salespeople are called “farmers”; GE expects them to grow their relationships with customers and sell services over time. Splitting the sales force is not always a perfect solution, however. Xerox has been very successful in establishing a solutions business in which the focus is not on providing office equipment but, rather, on helping clients manage their document flow. The organization nevertheless continues to do considerable business the old way, by selling printers and copiers and slapping simple service contracts on them. The two units end up competing for midsize customers: Whichever unit is first to get a lead pursues the opportunity vigorously, not wanting the other to get involved—even if it might be more suitable from a companywide perspective.

It almost goes without saying that a move to services will fail unless salespeople are financially motivated to promote them instead of focusing solely on product sales. Such a shift is difficult when product revenues are much higher than service revenues. For example, if Air Liquide supplies €500,000 worth of gas to an individual customer, the related services may be invoiced at only a few thousand euros. If objectives for service and product sales are not properly coordinated, their sales forces may even compete. When Air Liquide started to promote inventory management services to assist customers in optimizing the number of gas cylinders they had on hand, the company’s product sales force resisted out of fear of losing its traditional revenues. Management had to explain that although the new offering would indeed enable customers to reduce their on-site inventories, it would also help to lock in customers over the long run and to grow Air Liquide’s share of their purchasing overall. To reduce conflict between the two sales forces, Air Liquide created a double credit system: For each closed deal, product and service salespeople would get the same commission.

Finally, selling services requires that companies develop tools to document and communicate the value those services create for customers. These tools range from customer case studies and white papers to sophisticated simulation software. A good example is Documented Solutions, a tool developed by SKF over the past 15 years. Conceived by the company’s U.S. subsidiary, it helps SKF salespeople worldwide to identify and explain to customers how much they can save by using the company’s services. The tool is linked to a database that compares the best practices of SKF customers around the globe. It also allows customers to calculate their return on investment.

4: Focus on Customers’ Processes

Once manufacturers have learned how to sell and deliver services in a cost-efficient way, they can move toward addressing customers’ problems and processes holistically. This means shifting focus from their own processes, incentives, and structures to those of the customer.

Fenwick found a good way to do this: It installed data-collecting sensors and radio-frequency identification technology in its forklifts, to amass valuable information about how customers used its equipment. This knowledge became the basis for developing new service offerings, including access control and remote monitoring, asset management, a customer-specific intranet—Fenwick Online—and even a school for forklift drivers. Today 50% of the company’s €500 million in revenues comes from services developed over the past 15 years.

When manufacturers move beyond ancillary product-related services to complex offerings, they need to revisit the basis for their pricing and the way they measure success. Product-oriented companies typically focus on input-based indicators—hours of equipment use and numbers of units sold. As long as their services are discrete and productlike and performance risk is limited, that focus is entirely appropriate. In such cases, services are viewed as products in both the back and front offices—meaning that their input costs take center stage. But above that level they require companies to focus on problem solving from the customer’s perspective. When a company commits to solving a customer’s problem, it assumes a much higher risk: The goal is to achieve a certain output, and the degree to which it is achieved is the basis for compensation. This was true for all the successful companies we studied. Clearly, pricing then becomes much more complex. The French jet-engine maintenance company Snecma Services, for example, writes service contracts that guarantee air carriers a certain number of flight hours for their jet engines, however much servicing time that requires. Similarly, Hilti, headquartered in Liechtenstein, promotes an “all-round hassle-free” service package for the power tools it leases to the construction industry. The company’s customers don’t have to buy, say, a drill for their operations; they “pay by the hole” and are guaranteed a drill on the construction site.

Once executives have redefined the value proposition around solving customers’ problems, they may quickly discover a lack of the expertise required to tackle the processes involved. The Pittsburgh-based industrial-coatings specialist PPG offered to take over the paint shop in Fiat’s Torino automotive plant. Under the new deal, Fiat would pay PPG according to the number of cars flawlessly painted rather than the amount of industrial paint bought. PPG had to learn how painting robots function in order to control the outcome of its painting processes. Similarly, when SKF started developing services around its core product—bearings—the company studied how bearings might break down in its customers’ equipment and then acquired the know-how to help manage such breakdowns. Through internal development and acquisition over the past decade, SKF has become a world leader in condition monitoring, industrial sealing, lubrication systems, and vibration analysis.

• • •

Services can be a powerful way to lock in customers and increase their switching costs. As one manager at Air Liquide put it, “The more we enter into a customer’s business, the more the customer forgets how things are done.” At the same time, services represent an excellent route for acquiring new product business. Fenwick managers told us, “Whenever we can’t directly break into a customer account with a product, we’ll offer to provide services on a competitor’s product.” Finally, the relationship developed by providing services positions manufacturers to anticipate future business. But these considerable benefits can’t be achieved overnight. The four steps we’ve outlined will help to speed the process and boost companies’ profits.

Are You Ready for Global Turmoil?

Are You Ready for Global Turmoil?

Recent headlines -- Citigroup’s layoffs, Iceland’s sudden downturn, worldwide food shortages, etc. -- suggest serious global turmoil is ahead. All companies, and multinationals in particular, should be prepared to withstand it.

Unfortunately, many are not. Traditional forecasting and budgeting systems produce linear projections insufficient for risky, uncertain times. What’s needed is scenario planning, where companies stress-test their strategies and processes against a wide range of future scenarios to identify their vulnerabilities. Thus informed, the companies can adjust them to be more responsive and resilient.

But scenario planning often takes a backseat to more immediate concerns: developing new products, fighting an aggressive competitor, meeting earnings targets. So when large-scale external events hit, their impact is seismic.

If your company hasn’t engaged in scenario planning, can you do anything to increase your resilience in the near term?

Yes. Flexibility is the key to dealing with turmoil. You don’t want to be overcommitted to one strategy or one supplier. If your company has stuck its neck way out, as some financial firms did by overbetting on subprime mortgages, then unwind your commitments or hedge your bets. If your company is highly reliant on suppliers into whose operations you have little visibility, get some solid backup options in place. Otherwise, your company could find itself in the unhappy company of Baxter International, Mattel, and numerous pet food companies.

If you have engaged in scenario planning, should recent events cause you to back and revise some of your assumptions?

Yes, but constant revision is standard best practice, even when the external changes are positive. After the Berlin Wall came down, Royal Dutch/Shell’s scenario experts recognized that their strategies would need to account for the emerging geo-political world order: a single superpower, the rise of China, and the opening of former Soviet countries for exploration.

Building resilience and adaptability is a multipronged effort:

  • Use scenario planning to improve your organization’s insight and foresight about the future (Shell, Sprint and the World Bank excel at this).
  • Devise adaptive strategies with sufficient flexibility to deal with the unexpected, including future-proofing your plans using real options thinking, which views strategic investments such as building a plant or investing in R&D as a test rather than a commitment. How future uncertainties play out determines whether scaling up or withdrawing is called for. BP has been strong at such optionality thinking, as has Google, which seeks to develop a broad portfolio of “Googlettes” that they view as call options on the future.
  • Implement a dynamic monitoring system to track the external world in real time, as well as to gauge internal progress on executing strategies and plans. Such a system compensates for the human tendency to overreact to surface features, such as a spike in sales revenue or a drop in interest rates, and under-react to signs of deeper, more fundamental changes (P&G, IBM, and NASA have systems that do this well).
  • Improve your organization’s agility in terms of structure, processes, and rewards to cope better with the unknown. For example, fabric maker WL Gore dispenses with formal titles to minimize bureaucracy and hierarchy. As a result, information flows freely and quickly across organizational boundaries to allow fast action. Microsoft’s structure in the mid-1990s allowed it to turn on a dime in response to Netscape’s download threat.
  • Enhance your information and decision making procedures to remain vigilant, through external networks and by properly balancing traditional tools. Apple’s forays into music and telephony via its iPod and iPhone are the result of savvy market intelligence and decisive leadership by Steve Jobs and others that balances analytical tools with seasoned intuition. Eli Lilly and Deutsche Bank use internal prediction markets to ensure that all information, especially what is discussed informally around the water cooler, reaches senior leaders.
  • Foster strong leadership at multiple levels in the organization to deal better with crises and other unexpected circumstances (GE and McKinsey excel here).

As Darwin observed, it is not the strongest or smartest who survive but those who are most adaptive to change.

Faster Wireless Networks

Wednesday, May 21, 2008

Faster Wireless Networks

Sending descriptions of data could be more efficient than sending the data itself.

By Duncan Graham-Rowe

The role of computer networks would appear to be fairly straightforward: to ferry data from one point to another. But a novel wireless-network protocol developed for the U.S. military breaks with this tradition by sending not the data itself but rather a description of the data. In simulations, a network using the protocol was five times more efficient than a traditional network. Within the next year, the U.S. Defense Advanced Research Projects Agency (DARPA) will test the protocol in field trials at Fort A. P. Hill in Virginia.

The protocol is part of a project to create a new generation of mobile ad-hoc networks--self-configuring networks of mobile wireless nodes--that will enable faster and more reliable tactical communications between military personnel and vehicles, says Greg Lauer, section head for advanced network systems at BAE Systems in Burlington, MA, which helped develop the protocol for DARPA.

But the project also demonstrates the potential of a new and exciting field called network coding, says Muriel Médard, an associate professor of electrical engineering and computer science at MIT, who collaborated on the project with BAE Systems.

Network coding is a relatively young field, though there has been some interest in using it to make the Internet more efficient. Microsoft's peer-to-peer test bed Avalanche, for example, was designed to use network coding to deliver wide-scale on-demand TV and software patches without causing bottlenecks. But problems specific to mobile wireless networks are particularly amenable to solutions that use network coding.

In many ways, the analogy between the Internet and a superhighway is apt, Médard says. A lot of networks are built on a transportation model, with data traveling from address to address. "Data is transported very much like you would transport any other goods," says Médard. The trouble is that when you get a traffic jam, things grind to a halt.

"In a traditional network, you break information into packets and forward them between nodes," says Lauer. If a packet doesn't reach its destination, it will be sent and re-sent until its arrival is confirmed. But in some types of network, such as mobile wireless networks, there is a fairly high chance that the packets won't be received because of interference or limited bandwidth, or because a mobile node has wandered out of range or been destroyed. If nodes keep transmitting data until they receive confirmation, Lauer says, a bottleneck can result.

With network coding this is not an issue. "You take a group of packets and combine them," says Lauer. The result is a single packet that contains traces of information from each of the original packets. This hybrid packet is then sent to one or more additional nodes.

By itself, the hybrid packet just looks like gobbledegook, says Médard. But it includes a small amount of data that acts as a clue to its contents. A single packet won't normally contain enough clues to allow its data to be reconstructed. But as long as the destination node receives enough independent packets from enough different sources, it should be able to recover all the original data, Médard says.

Credit: DARPA

The advantage of this is not only that you are using less bandwidth to send information, and thus avoiding bottlenecks, but also that you don't have to keep track of which node sent what, says Médard.

Surprisingly, even the means of combining data into a single packet at the source node doesn't have to be shared. If the packets contain enough clues, the destination nodes can reconstruct the contents of packets that have been created randomly. You're not sending data, per se, says Lauer, you're sending pieces of algorithms for assembling data.

Network coding is an offshoot of a field called information theory, which has already been put to use in data-compression software. But it's only relatively recently that people have started looking at how network coding could be used to send data. "It turns out it can be extremely powerful," Médard says.

As part of a program funded by DARPA, BAE and MIT used network-coding principles to develop protocols that could be used to send information to multiple destinations. In a conventional network, each node would act like a router, steering specific information toward specific destinations. But in BAE and DARPA's network, all nodes broadcast all information to all other nodes.

In the DARPA simulations, where a tactical mobile network was emulated on an Ethernet network, the researchers experimented to see how much they could reduce the bandwidth of the network while maintaining the same standard of communication. The simulations involved all forms of military data, from voice and video streams to tactical data, and all kinds of conditions, such as interference and poor connectivity.

The researchers found that they could reduce the bandwidth to just one-fifth of that required by a conventional network, with no loss of quality. The upcoming field tests, on the other hand, will investigate whether the protocols can be used to send more data over existing radio networks than standard protocols can, says Lauer.

Network coding is an exciting new area that has attracted a lot of interest, says Christina Fragouli, an expert in network coding at the École Polytechnique Fédérale de Lausanne in Switzerland. And mobile wireless networks are precisely the kind of application that network coding can help with, she says. "It's a very difficult kind of network to deal with," she says, because of its intrinsic interference problems and limited bandwidth.

The protocols have also been tested on a standard Wi-Fi network as a way to stream video, and the results were very promising, says Médard. Further down the line, network coding could help perform security functions. "There are ways to tell if someone has messed around with your data," Médard says.

Alarming Open-Source Security Holes

Tuesday, May 20, 2008

Alarming Open-Source Security Holes

How a programming error introduced profound security vulnerabilities in millions of computer systems.

By Simson Garfinkel

Back in May 2006, a few programmers working on an open-source security project made a whopper of a mistake. Last week, the full impact of that mistake was just beginning to dawn on security professionals around the world.

In technical terms, a programming error reduced the amount of entropy used to create the cryptographic keys in a piece of code called the OpenSSL library, which is used by programs like the Apache Web server, the SSH remote access program, the IPsec Virtual Private Network (VPN), secure e-mail programs, some software used for anonymously accessing the Internet, and so on.

In plainer language: after a week of analysis, we now know that two changed lines of code have created profound security vulnerabilities in at least four different open-source operating systems, 25 different application programs, and millions of individual computer systems on the Internet. And even though the vulnerability was discovered on May 13 and a patch has been distributed, installing the patch doesn't repair the damage to the compromised systems. What's even more alarming is that some computers may be compromised even though they aren't running the suspect code.

The reason that the patch doesn't fix the problem has to do with the specifics of the programmers' error. Modern computer systems employ large numbers to generate the keys that are used to encrypt and decrypt information sent over a network. Authorized users know the right key, so they don't have to guess it. Malevolent hackers don't know the right key. Normally, it would simply take too long to guess it by trying all possible keys--like, hundreds of billions of years too long.

But the security of the system turns upside down if the computer can only use a limited number of a million different keys. For the authorized user, the key looks good--the data gets encrypted. But the bad guy's software can quickly make and then try all possible keys for a specific computer. The error introduced two years ago makes cryptographic keys easy to guess.

The error doesn't give every computer the same cryptographic key--that would have been caught before now. Instead, it reduces the number of different keys that these Linux computers can generate to 32,767 different keys, depending on the computer's processor architecture, the size of the key, and the key type.

Less than a day after the vulnerability was announced, computer hacker HD Moore of the Metasploit project released a set of "toys" for cracking the keys of these poor Linux and Ubuntu computer systems. As of Sunday, Moore's website had downloadable files of precomputed keys, just to make it easier to identify vulnerable computer systems.

Unlike the common buffer overflow bug, which can be fixed by loading new software, keys created with the buggy software don't get better when the computer is patched: instead, new keys have to be generated and installed. Complicating the process is the fact that keys also need to be certified and distributed: the process is time consuming, complex, and error prone.

Nobody knows just how many systems are impacted by this problem, because cryptographic keys are portable: vulnerable keys could have been generated on a Debian system in one office and then installed on a server running Windows in another. Debian is a favored Linux distribution of many security professionals, and Ubuntu is one of the most popular Linux distributions for general use, so the reach of the problem could be quite widespread.

So how did the programmers make the mistake in the first place? Ironically, they were using an automated tool designed to catch the kinds of programming bugs that lead to security vulnerabilities. The tool, called Valgrind, discovered that the OpenSSL library was using a block of memory without initializing the memory to a known state--for example, setting the block's contents to be all zeros. Normally, it's a mistake to use memory without setting it to a known value. But in this case, that unknown state was being intentionally used by the OpenSSL library to help generate randomness.

The uninitialized memory wasn't the only source of randomness: OpenSSL also gets randomness from sources like mouse movements, keystroke timings, the arrival of packets at the network interface, and even microvariations in the speed of the computer's hard disk. But when the programmers saw the errors generated by Valgrind, they commented out the offending lines--and removed all the sources of randomness used to generate keys except for one, an integer called the process ID that can range from 0 to 32,767.

"Never fix a bug you don't understand!" raved OpenSSL developer Ben Laurie on his blog after the full extent of the error became known. Laurie blames the Debian developers for trying to fix the "bug" in the version of OpenSSL distributed with the Debian and Ubuntu operating systems, rather than sending the fix to the OpenSSL developers. "Had Debian done this in this case," he wrote, "we (the OpenSSL Team) would have fallen about laughing, and once we had got our breath back, told them what a terrible idea this was. But no, it seems that every vendor wants to 'add value' by getting in between the user of the software and its author."

Perhaps more disconcerting, though, is what this story tells us about the security of open-source software--and perhaps about the security of software in general. One developer (who I've been asked not to single out) noticed a problem, proposed a fix, and got the fix approved by a small number of people who didn't really understand the implications of what was being suggested. The result: communications that should have been cryptographically protected between millions of computer systems all over the world weren't really protected at all. Two years ago, Steve Gibson, a highly respected security consultant, alleged that a significant bug found in some Microsoft software had more in common with a programmer trying to create an intentional "back door" than with yet another Microsoft coding error.

The Debian OpenSSL randomness error was almost certainly an innocent mistake. But what if a country like China or Russia wanted to intentionally introduce secret vulnerabilities into our open-source software? Well concealed, such vulnerabilities might lay hidden for years.

One thing is for sure: we should expect to discover more of these vulnerabilities as time goes on.

Simson Garfinkel is an associate professor at the naval postgraduate school in Monterey, CA, and a fellow at the Center for Research and Computation and Society at Harvard University.

DNA Sequencing in a Snap

DNA Sequencing in a Snap

An innnovative approach could target hard-to-sequence areas.

By Emily Singer

A novel sequencing technology being developed by a Massachusetts startup allows scientists to take photographs of the sequence of a DNA molecule. William Glover, president of ZS Genetics, based in North Reading, MA, says that his approach will allow scientists to read long stretches of DNA, enabling the sequencing of hard-to-read areas, such as highly repetitive regions in plants and some parts of the human genome. Longer sequences also allow scientists to distinguish between maternal and paternal chromosomes, which might have important diagnostic applications.

Scientists at a recent sequencing conference in San Diego--where details of the technology were presented for the first time--were intrigued by the approach because it is totally different than even the newest methods on the market. "It's surprising and potentially very powerful," says Vladimir Benes, head of the Genomics Core Facility at the European Molecular Biology Laboratory, in Germany.

The cost of DNA sequencing has plummeted since a working draft of the human genome was completed in 2001. Most of the newest technologies currently in use generate very short sequences, about 30 to 150 base pairs, which are then stitched together with special software. But this method doesn't always capture all the information in the genome, and some parts of the genome are difficult to sequence this way, says Glover.

Seeing the sequence: This image shows a cluster of DNA molecules (black strands) that have been synthesized using bases that are specially labeled to be visible under an electron microscope. Scientists are using this technique to develop a novel sequencing technology.
Credit: ZS Genetics

ZS Genetics is a relative newcomer to the field and uses an approach vastly different than any other: electron microscopy. Glover predicts that by next year, the company's technology will be able to generate readable lengths of DNA that are thousands of base pairs long, and he believes that ZS Genetics' sequencing method will improve by a factor of 10 in the next couple of years, making the pieces even easier to assemble. The company was recently accepted as one of the teams in the Archon X Prize for Genomics, a $10 million award for the first privately funded team that can sequence 100 human genomes in 10 days.

"Any technology that can bring the read length to the 1,000 base-pairs range will definitely, at least for de novo sequencing, represent a major breakthrough," says Benes. He says that the approach might be particularly useful for sequencing the genomes of plants, which often have highly complex genomes littered with repetitive sequences that are difficult to assemble computationally.

At a width of 2.2 nanometers, DNA is invisible under an average light microscope.

But electron microscopes, which detect the difference in charge between atoms, have a subnanometer resolution. While the sequence of natural DNA lacks enough contrast to be resolved with electron microscopy, Glover and his colleagues developed a novel labeling system to make the molecules more visible.

Researchers synthesize a new complementary strand of the molecule to be sequenced using bases--the letters that make up DNA--labeled with iodine and bromine. The labeled bases appear as either large or small dots under the electron microscope, allowing scientists to read the sequence. (Three different labels will be required to read the sequence of the four bases found in DNA. Three of the bases will have different labels; the fourth will simply remain unlabeled.)


The substrate on which the newly labeled molecules are imaged is made using semiconductor fabrication techniques. Scientists generate silicon wafers with an 11-nanometer-thick window, which is thin enough for the electron beam of the microscope to discern the DNA molecule from the substrate. ZS Genetics is also working on making even thinner wafers to boost resolution of the image.

DNA has a tendency to curl up into a tangled mass, so one of the biggest challenges has been untangling that ball into linear strands that can be read. Researchers first flow fluid through a microfluidic device with tiny channels. That device fits on top of the DNA-coated wafer. The force of the flow stretches the DNA molecules, which then stick to the silicon. An electron beam is shot through the wafer, and a camera captures the image from the other side. "The wafer is the major proprietary consumable," says Glover. "It will be dirt cheap."

When stretched, the DNA looks like a ladder with the bases forming the rungs. So far, the company has released images of a 23-kilobase piece of DNA using a single type of labeled base. Glover says that he and his team have also done multilabel sequencing, although he declined to give additional details.

Still, the technology has a ways to go before it's market ready. "Lots of proof of principle methods can work in R&D, but bringing it to [market] is not trivial," says Benes. Glover aims to have a prototype this summer that scientists can test, and a faster commercial system next year. He adds that because most of the system relies on existing technologies, it will be easy and inexpensive to upgrade the system with new cameras and software.

Longer reads will allow scientists to look at collections of genetic variations that have been inherited together, known as haplotypes. This kind of analysis can determine if a particular genetic variation has been passed down from the individual's mother or father. Recent research suggests that in some cases, maternal or paternal inheritance can impact the severity of the disease, a phenomenon that may be more common than previously thought.

Friday, May 16, 2008

Friday, May 16, 2008

A Faster, More Energy-Efficient GPS

New software could help make location-aware devices ubiquitous.

By Kate Greene

If you want to add location information to pictures today, it's a fairly tedious process. Many people manually annotate their pictures after they've uploaded them to a computer. And while some high-end cameras come equipped with a Global Positioning System (GPS) chip that captures the location information, this extra hardware is slow and can drain battery power. Now Geotate, a U.K.-based spinoff of Philips Research, thinks that it can make GPS faster and more energy efficient in any device.

As more people take pictures on digital cameras, there's a growing interest in making sure that those pictures are geotagged. When pictures contain location information, they could be easier to sort in personal photo software like iPhoto. And if geotagged pictures are uploaded to a photo-sharing site, such as Flickr, then others can benefit from the information when, say, planning a vacation. Right now, only a small fraction of photos contain any information about where they were taken.

To be sure, Geotate isn't the only company trying to make geotagging more common. Eye-Fi announced this week that it will sell a memory card for cameras that can automatically and wirelessly upload geotagged photos to a computer or photo-sharing site. Eye-Fi's technology differs from Geotate's in that it approximates a camera's location from the local Wi-Fi routers--information that's accessed via Skyhook Wireless's extensive database of Wi-Fi hot spots covering 70 percent of the United States.

Tag, you’re it: This GPS device from Geotate, attached to the top of the camera, can capture just enough data from GPS satellites that the location of the device can be determined when the pictures are uploaded to a computer. By not processing the satellite data on a specialized GPS chip, Geotate’s approach saves time and battery power.
Credit: Geotate

Since Geotate's approach doesn't require a Wi-Fi signal, it's practical in more-remote locations. However, it falls short in major urban areas, where GPS signals tend to get blocked by tall buildings. Ultimately, the best geotagging results would come from a combination of services that use a variety of location-tracking technologies, suggests Alexandre Bayen, a professor of civil and environmental engineering at the University of California, Berkeley.

The basic idea behind Geotate's approach, called Capture and Process, is to collect only a small amount of information from the GPS satellites that help determine location, explains Chris Marshall, the company's CTO. And instead of processing this information on a GPS chip within a gadget, it's processed, with the help of software developed at the company, on a computer when the photos are uploaded. "If you can do the processing in software," says Marshall, "then you don't need a dedicated chip."

Traditional GPS systems require a lot of electronics, including amplifiers, filters, an antenna, and a processing chip. A GPS-enabled device listens to signals, which contain orbit information, from the GPS satellites. Using this information, the device can calculate the distance between itself and the satellite, and from that determine where it is. But it can take 30 seconds for a satellite to stream its position to a GPS receiver. And only after the GPS system decodes the orbit information from four satellites can it calculate the location--a process that requires the processor to churn through a relatively large amount of data.

Geotate's approach is a redesign of the system that loses the processor. Instead, the hardware simply captures a small sample--200 milliseconds worth--of satellite orbit information and it stores it in memory. When a person uploads her pictures to a computer, the accompanying GPS data is used to calculate location information by employing the computer's processor and by querying Geotate's database of historic satellite positioning. The process requires only 10 millijoules of energy at the time the picture is taken, says Geotate's Marshall, which is about one-hundredth of the energy used in a traditional GPS system.

While the company doesn't provide any specific hardware, it is working with personal electronics companies to incorporate the approach in cameras. But ultimately, Geotate's product is the GPS processing software and the database used to locate the satellites after the fact. Marshall says that he expects Capture and Process add-ons for cameras to be available by the end of the year.

Bayen suspects that geotagging photos and other objects will start to be more popular in the coming years as people get more used to location-based services and location-aware devices such as the iPhone. It's unclear if Geotate's approach will be widely adopted in the industry, but it is approaching the industry wisely by attempting to solve energy-efficiency problems. In order to get more people to geotag their photos, says Bayen, the location technology needs to not drain the battery.



Returning to the Moon

Tuesday, May 13, 2008

Returning to the Moon

New technologies on NASA's next lunar spacecraft will collect information to make human exploration safer.

By Brittany Sauser


NASA's next lunar orbiter will launch later this year, the first step in an ambitious plan to return humans to the Moon--and send them on to Mars. The spacecraft, called the Lunar Reconnaissance Orbiter (LRO), will use new technology to make precise maps of the Moon's surface, to search for resources such as ice, and to assess the threat that radiation in the environment could pose for humans.

LRO is the most advanced lunar satellite NASA has built, says Richard Vondrak, the project scientist for LRO, who adds that it will provide information that would have been impossible to collect a few decades ago. "We are surveying the Moon in more detail than any other celestial body for the benefit of all countries, including China, Japan, and India, who have said they have ambitions to put people on the Moon in the next 10 to 20 years," adds David Smith, a NASA scientist working on LRO.

LRO is part of NASA's Vision for Space Exploration, a program intended to, among other things, answer fundamental questions of physics, search for extraterrestrial life, and seek new resources, such as power sources, for Earth. The program calls for humans to return to the Moon. But before that happens, says Vondrak, it's necessary to understand much more about the Moon's surface radiation and topography.

"During Apollo, there were a number of near-fatal mistakes," says Smith. "We did not land on a flat surface, and there were boulders everywhere, which could have damaged the vehicle and prevented a return to Earth. Safety standards today would not have allowed Apollo."

The Apollo manned-spacecraft program shut down in 1975, and it was not until the 1990s that the United States sent more satellites to orbit the Moon--Clementine and the Lunar Prospector, which spent months orbiting the Moon and sending back data. Clementine was a joint project between the U.S. Department of Defense and NASA that also tested new ballistic technologies; the U.S. has launched no other lunar probes since.

LRO will collect more data with greater precision so that scientists can find safe and resource-rich landing sites and design systems appropriate for the lunar environment, says Vondrak.

Moonbound: The Lunar Reconnaissance Orbiter (above) will orbit and survey the Moon, providing greater detail about its surface and environment than any previous satellite has. One of two new instruments onboard the spacecraft will be the lunar orbiter laser altimeter (bottom), which will send out five laser beams 28 times per second to map the surface of the moon. Very short pulses of laser light are emitted through the narrow silver cone attached to the instrument’s optical assembly (gold-colored box). The large cone collects the laser light that is reflected back from the lunar surface.
Credit: NASA

LRO will collect more data with greater precision so that scientists can find safe and resource-rich landing sites and design systems appropriate for the lunar environment, says Vondrak.

LRO will orbit the Moon for one year at an altitude of 50 kilometers. Previous U.S. satellites maintained an altitude of approximately 100 to 200 kilometers, as have those sent by other countries, like China's Chang'e 1 and Japan's Kaguya, both launched in 2007. Orbiting at a lower altitude allows the spacecraft to get a closer view of the Moon, enabling the craft to obtain higher-resolution images, very detailed maps, and more-accurate temperature measurements, says Vondrak.

The lunar orbiter is equipped with six novel instruments, two of which will be making their space debuts: a cosmic-ray telescope, which will measure the effects that lunar radiation would have on humans, and a laser altimeter, which will make maps of the surface of the Moon.

The cosmic-ray telescope, called Crater, is a new kind of sensor developed by MIT, Boston University, the University of Tennessee at Knoxville, and the Aerospace Corporation. It can measure the radiation environment, not just in space, but also as it would be experienced by astronauts on the surface on a day-to-day basis. "By characterizing the radiation, we can build better shielding on spacecraft so that astronauts can survive long trips to the Moon and Mars," says Justin Kasper, a staff astrophysicist at the Harvard-Smithsonian Center for Astrophysics and the project scientist for Crater.

The human body responds to radiation in different ways, depending on the intensity, duration, and composition of the radioactive particles. The two things that scientists are most worried about are acute radiation poisoning from, for example, a solar flare, and long-term exposure to galactic cosmic rays, which can increase the risk of cancer. "In all cases, the danger is that ionizing radiation [high-energy, charged particles] can break the atomic bonds in DNA and damage cells and tissue," says Kasper.

The radiation detector consists of a series of silicon semiconductors, each about 35 millimeters in diameter and one millimeter tall. In between the pieces of silicon, the scientists have inserted large blocks of material called tissue-equivalent plastic. "The blocks are waxy and look like giant black crayons but have the same chemical composition as human tissue," says Kasper.

So while the silicon gauges the energy and composition of particles as they come flying through the detector (a proven technique for measuring radiation), the plastic is used to measure their biological effects. Previously, data from radiation detectors was sent back to Earth, where scientists attempted to calculate the effect that the measured radiation would have on humans. The plastic material provides a direct and more-accurate measurement of what radiation is like at different depths of human tissue, says Kasper.

The second instrument making its first spaceflight is the lunar orbiter laser altimeter (LOLA), developed by engineers at NASA Goddard Space Flight Center. It uses laser light to measure the distance between the spacecraft and the surface of the Moon. "It is going to measure that distance very precisely, to about 10 centimeters, and it will make measurements 28 times per second," says NASA's Smith, who is also the principal investigator for LOLA. Unlike current instruments, which send out a single laser beam at low repetitions, the new altimeter sends out five focused beams of laser light that are reflected back and received by five separate detectors, for a total of 140 measurements per second.

This allows scientists to make a high-density, very precise map of the shape of the lunar surface. "We can determine the altitude and slope of different spots on the Moon as well as the roughness of the terrain," says Smith. "We can also learn about the properties of the surface--for example, the shape of craters and their depth and size." The end goal is to identify the best spot, preferably flat, for a large lander to touch down and for astronauts to make a base.

Crater and LOLA will be accompanied on the lunar orbiter by four other instruments that will be imaging and mapping the Moon, measuring surface temperatures to identify potential ice deposits, and searching for hydrogen in the lunar polar regions. All the data will be continuously sent back to Earth for analysis.

"LRO is the first of our exploration missions for a return to the Moon and will have a significant impact on future human spaceflight," says Vondrak


Wednesday, May 07, 2008

The $200 barrel of oil?

Oil

The $200 barrel of oil?

May 7th 2008
From Economist.com

OIL briefly reached another record on Tuesday May 6th as West Texas Intermediate traded at over $122 a barrel for the first time. Ten years ago a barrel fetched around $15. The feeble dollar, soaring demand and supply constraints have all helped to push up prices by 25% in the past four months alone. And there is little sign of respite for worried governments and consumers. This week Goldman Sachs, a bank, predicted that oil could reach $200 a barrel before the end of the year.

Corbis

Tuesday, May 06, 2008

Das Internet braucht neue Hausnummern

Neuer Standard für IP-Protokoll

Das Internet braucht neue Hausnummern

06. Mai 2008 Langsam, aber unausweichlich wird es eng im Internet. Das für den Datenverkehr im Netz grundlegende Internet-Protokoll ermöglicht 3,7 Milliarden Adressen - bei einer Weltbevölkerung von 6,7 Milliarden sind das deutlich zu wenig. In dieser Woche wollen rund 200 Teilnehmer einer Fachkonferenz in Potsdam die Lösung für das Problem vorantreiben: IPv6 hat mit 340 Sextillionen Adressen praktisch unendlich viel Platz.

Dieses Internet-Protokoll in der Version 6 sei schon fast zehn Jahre alt, erklärt Konferenzleiter Christoph Meinel. „Man hat sich damals hingesetzt und gefragt: Wie machen wir es richtig?“ Denn bereits Mitte der 90er Jahre erkannte man die Mängel der Version 4 des Internet-Protokolls - vor allem die begrenzte Verfügbarkeit von Adressen, in der Fachsprache als Adressraum bezeichnet.

Danach sei IPv6 aber nicht richtig in die Gänge gekommen, erklärt Meinel, der das Hasso-Plattner-Institut (HPI) an der Universität Potsdam leitet. Vor allem in den Vereinigten Staaten hielt sich die Begeisterung in Grenzen - die dort eingerichteten Netze verfügen ja auch über etwa 74 Prozent aller derzeit vergebenen IP-Adressen. Für China und andere asiatischen Ländern sei der Druck der Adressenknappheit aber sehr viel stärker, erklärt Meinel. Daher werde IPv6 dort sehr viel massiver vorangetrieben.

Netzanbindung für Geräte aller Art

„Inzwischen kommt auch in den USA und bei uns Bewegung hinein“, sagt Meinel. Als treibende Kräfte nennt er den Trend zum „Internet der Dinge“, also der Netzanbindung von elektronischen Geräten aller Art vom Stromzähler bis zum Kühlschrank. Interessant ist das neue Protokoll auch für mobile Anwendungen. Für Handys und andere mobile Geräte gebe es bislang keine feste IP-Adresse, erklärt der Informatiker. Das erschwert die Entwicklung von Web-Anwendungen, die ein Gerät gezielt ansprechen müssen. „Das wird alles mit IPv6 möglich“, sagt Meinel.

Der Umstellungsprozess wird schrittweise vor sich gehen und betrifft alle Netzanbieter und -nutzer, auch den Endanwender. „Die meisten Provider beschäftigen sich noch nicht genug mit IPv6“, sagt Frank Orlowski vom Internet-Austauschknoten DE-CIX in Frankfurt am Main. „Je früher man damit anfängt, umso besser.“ Es dürfe keine Torschlusspanik aufkommen, aber „irgendwann gibt es nichts mehr, was noch an Adressräumen verteilt werden kann“. Immerhin nutzen nach Angaben Orlowskis bereits 70 bis 80 Provider der 240 am DE-CIX angeschlossenen Netze das neue Internet-Protokoll.

Der Netz-Experte erwartet, dass es eine Übergangszeit geben wird, in der beide Protokolle parallel verwendet werden können. „Irgendwann wird man dann aber das alte Netz abschalten“, erklärt Orlowski. „Das wird ein Prozess sein, der mehrere Jahre in Anspruch nimmt.“ Die Schätzungen für den Zeitpunkt, zu dem es keine freien IP-Adressen mehr geben wird, reichen je nach Szenario von 2010 bis 2012.

Abschied von dynamischen Adressen

Auch der Potsdamer Informatik-Professor Meinel sieht keinen Grund für Panik: „Es ist nicht so, dass plötzlich alles schwarz wird für die, die nicht umgestellt haben.“ Schließlich gibt es auch die als „Tunneling“ bezeichneten Möglichkeiten, Daten des einen Protokolls so zu transportieren, dass sie von einem anderen Protokoll verstanden werden. Allerdings könnte es dabei zu gewissen Leistungseinbußen kommen.

Die Umstellung ist auf Seiten der Provider mit Investitionen in neue Hardware verbunden - die neuen Router müssen dann schließlich mit IPv6 umgehen können. Meinel erwartet aber, dass dies im Rahmen der ohnehin üblichen Erneuerung von Geräten ablaufen kann. Auch der DSL-Router für das drahtlose WLAN-Netz daheim muss dann IPv6 verstehen können, aber Meinel sieht in der Bereitstellung der entsprechenden Geräte kein großes Hindernis: „IPv6 soll nicht teuer werden.“

„Never touch a running system“

Für gewichtiger hält der HPI-Direktor die Sorgen nach dem Motto „Never touch a running system“. Mancher werde sagen: „Mein Internet funktioniert doch.“ Solche Bedenken müssten mit einer breiten Aufklärung über die Vorteile überwunden werden, meint Meinel.

Bei IPv6 werden keine dynamischen IP-Adressen mehr zugewiesen, wie es bei der Einwahl ins Netz mit einem Modem oder auch bei den meisten DSL-Verbindungen der Fall ist. Feste IP-Adressen haben den Vorteil, dass man einen eigenen Web-Server betreiben kann, der auch ohne Anmeldung einer Domain, also einer Internet-Adresse nach dem Muster meineDomain.de, immer unter der gleichen Ziffern-Adresse erreichbar ist. Andererseits erhöht eine dynamische, also sich immer wieder ändernde IP-Adresse auch den Schutz der Privatsphäre. Der Informatiker Meinel aber sieht in den dynamischen Adressen nur einen Notbehelf der IPv4-Ära: „Eigentlich sollten Datenschutz und Sicherheit auf anderen Methoden beruhen.“

Internet-Protokoll (IP)

Das Internet-Protokoll (IP) ist ein zentraler Standard für die Selbstorganisation des weltweiten Datennetzes. Es ermöglicht eine eindeutige Identifizierung für jedes an das Internet angeschlossene Gerät.

Bisher gilt im Netz Version 4 des Internet-Protokolls: IPv4 wurde bereits 1981 festgelegt. Es legt die Adressen in einem Datenblock mit einer Länge von 32 Bit ab: Vier Folgen von maximal drei Ziffern zwischen 0 und 255, die durch Punkte abgetrennt werden. Damit sind 4,3 Milliarden Internet-Adressen möglich, von denen allerdings 600 Millionen reserviert sind, so dass nur 3,7 Milliarden übrig bleiben.

Sehr viel mehr Platz bietet Version 6: IPv6 vergrößert den Datenblock auf 128 Bit, was mehr als 340 Sextillionen Adressen ermöglicht, aufgeteilt in acht Zahlenblöcken. Diese werden nicht in Dezimalziffern, sondern in hexadezimaler Schreibweise notiert, also in einem 16er Zahlensystem mit den zusätzlichen Buchstaben a bis f. IPv6 wurde im Dezember 1998 als Standard verankert, bis heute aber erst ansatzweise umgesetzt.

Monday, May 05, 2008

South Korea begins imports of biotech corn because of shortage of conventional grain

Friday, May 02, 2008

South Korea begins imports of biotech corn because of shortage of conventional grain

By Associated Press

Major South Korean corn processors have begun importing genetically modified varieties of the crop because of shortages of conventional corn on the world market since China began limiting its exports, officials said Friday.

About 63,000 tons of genetically modified U.S. corn arrived in South Korea on Thursday, the first large-scale imports for human consumption since the government began regulating biotech crops in 2001.

Four major South Korean companies, which make up about 90 percent of the corn processing market, had refrained from importing such corn because of negative perceptions among consumers of genetically modified organisms, or GMOs.

But now they say they cannot help but import GMO corn.

''China has stopped exports, while European countries are sweeping off non-GMO corn from Latin American nations,'' said Yoo Chang-kyu, an official with the Korea Corn Processing Association, the business lobby for the four companies. ''We don't have any other options.''

The companies use corn to produce corn starch, a key ingredient in cookies, beverages, ice cream and other foods.

Environmental and consumer groups protested the import of biotech corn, calling it ''monster food.''

''The safety of genetically modified corn has not been fully verified,'' they said in a joint statement. ''If food is made with it, the health of our nation's people can be threatened.''

On Thursday, activists held a protest at the port of Ulsan, where the GMO corn arrived, Yonhap news agency reported.

South Korea imported about 10.5 million tons of corn last year, with 8.2 million tons intended for animal feed and 2.3 million tons for human consumption, according to the Agriculture Ministry.

About half of the amount for human consumption was imported from China, 30 percent from the United States and the remainder from Brazil and other Latin American nations, it said.

China began limiting corn exports last year to avoid domestic shortages.

Local newspapers said the four Korean companies are expected to import about 1.3 million tons of GMO corn this year.

But Yoo, of the corn processing association, said the amount is likely to be less than that considering the expected backlash from consumers. He provided no exact estimate.

Yoo said the price of non-GMO corn has more than doubled to about US$360 per ton since 2006.

South Korea enforced a regulation in 2001 that calls for the labeling of products that contain GMOs.

Although no GMO corn had been imported in large amounts since then, about 70 percent of the country's soybean imports are genetically modified, according to the Korea Food and Drug Administration.

Electric Cars Primer

http://www.technologyreview.com/read_article.aspx?ch=specialsections&sc=batteries&id=20651&a=

All of Inflation’s Little Parts

http://www.nytimes.com/interactive/2008/05/03/business/20080403_SPENDING_GRAPHIC.html

Ölpreis klettert über 120 Dollar

Ölpreis klettert über 120 Dollar

von Tobias Bayer (Frankfurt)

Förderausfälle in Nigeria und erfreuliche US-Konjunkturdaten haben den Ölpreis erstmals über 120 $ gehievt. Analysten rechnen damit, dass sich die Rally kurzfristig fortsetzt.

n New York verteuerte sich Rohöl der Sorte West Texas Intermediate zur Lieferung im Juni auf 120,21 $ je Barrel (entspricht 159 Litern). Das entspricht einem Tagesanstieg von knapp 4 $.

Die Rally des Ölpreises hält zur Zeit ungebremst an. Auf Jahressicht legte er um 93 Prozent zu. Befeuert wird die Hausse von der Angst vor künftigen Knappheiten, tatsächlichen Versorgungsstörungen und dem wachsenden Interesse der Finanzwelt an Rohstoffen als Vermögensklasse, die einen Schutz vor dem Dollar-Verfall und Inflation bietet. So hat der Greenback gegenüber der dem Euro in den vergangenen zwölf Monaten um 14 Prozent abgewertet. Nach Schätzungen haben Anleger derzeit 225 Mrd. $ in Rohstoffen investiert. Allein im ersten Quartal stieg das Engagement um 30 Mrd. $.

Einkaufsmanagerindex stützt Ölpreis


Alles schaut auf Nigeria: Das afrikanische Land ist bestimmend für den Ölpreis
Alles schaut auf Nigeria: Das afrikanische Land ist bestimmend für den Ölpreis

Für den Preisanstieg am Montag ausschlaggebend waren Nachrichten vom Wochenende aus Nigeria. Demnach haben militante Rebellen ein Transportsystem angegriffen und Royal Dutch Shell dazu gezwungen, den Ausstoß zu reduzieren. Preistreibend wirkte zudem der US-Einkaufsmanagerindex für den Dienstleistungssektor. Im April stieg der Konjunkturindikator unerwartet von 49,6 auf 52 an. Ein Wert über 50 signalisiert Wachstum. Händler sehen sich deshalb bestärkt darin, dass es um die Wirtschaft der USA nun doch nicht so schlimm bestellt ist wie angenommen. Die Vereinigten Staaten sind der größte Verbraucher der Welt. Im Februar fiel die Ölnachfrage um sieben Prozent - das ist der größte Einbruch seit Dezember 2001.

Eugen Weinberg, Rohstoffanalyst der Commerzbank, rechnet mit Blick auf die spekulativen Kaufpositionen mit einem weiteren Preisanstieg. "Angeführt von der Preisschwäche Anfang letzte Woche sind die Netto-Long-Positionen der Großanleger bei Rohöl um 17.000 Kontrakte zurückgekommen und liegen bei 53.300 Kontrakten. Dies lässt noch viel Spielraum nach oben und macht weitere Steigerungen wahrscheinlich", schreibt Weinberg in einem Researchbericht.

Sunday, May 04, 2008

Microsoft and Yahoo!

Microsoft throws in the towel

May 4th 2008
From Economist.com

The software giant withdraws its bid for Yahoo!


HE build up had all the atmosphere of one of boxing’s bigger bouts. But three months after Microsoft laid down the challenge, it elected to walk away from its takeover bout for Yahoo!. On Saturday May 3rd the software giant laid down its gloves, despite expectations of a hostile contest. One last attempt to improve the deal had failed. Microsoft said that it had raised its $44.6 billion bid by $5 billion, but that as Yahoo! was holding out for a bigger purse it would walk away. Failing to buy Yahoo! leaves Microsoft well short in its bid to go after the ultimate champion of the internet: Google.

Microsoft and Yahoo! are a distant second and third in the lucrative business of web search and related advertising. The idea of combining was to challenge the clear leader, Google. Microsoft wanted Yahoo! in order to add critical mass to Microsoft's own advertising platform, to make it more competitive. But Yahoo! was not keen to join the effort to become an advertising counterweight to Google. Jerry Yang, Yahoo!’s founder, had no wish to see the company he created swallowed up by Microsoft. Last year, in an effort to revive his former giant of the web, he resumed his role as chief executive and from that position tried to ward off an offer that he reckoned “substantially undervalues” the company.

These efforts set off a string of shifting alliances, rumour, claim and counterclaim that offered a variety of permutations of tie-ups between big internet firms. Yahoo! has been aiming to compete with Google for years, but without success. Under assault from Microsoft, Yahoo! has hinted that it might give up and, in effect, piggy-back on Google's superiority in order to boost its own profits and persuade shareholders not to sell to Microsoft. Yahoo! ran a limited trial in which it allowed Google to place text advertisements on Yahoo!'s search pages in America. Rumours circulate still that it wants to extend this arrangement. Moreover, other rumours suggest that Yahoo! has been discussing a merger with Time Warner’s internet arm, AOL.

As Yahoo! threw up its defences, Microsoft also became the subject of rumours. One suggested that Microsoft might team up with News Corporation, an old-media heavyweight controlled by Rupert Murdoch, a wily new-media operator too. The pair were said to be considering a joint bid for Yahoo!. Yet previously Mr Murdoch had been mooted as a “white knight” to save Yahoo! from Microsoft’s clutches. He, probably wisely, decided to avoid involvement in a bidding war against an opponent with deep-pockets.

In the end Steve Ballmer, Microsoft’s chief executive, said that Yahoo!’s determination to pursue closer ties with Google, even as takeover talks progressed, were reason enough to drop the takeover offer. For its part Yahoo! reckoned that the prospects of closer advertising ties with Google justified a much higher price than Microsoft was prepared to pay. Mr Ballmer said Microsoft was reluctant to launch a hostile bid as the firm was unwilling to get involved in a protracted fight for the support of Yahoo!’s shareholders. There was also concern that that Yahoo! might make matters more difficult in the meantime: it has already introduced some “poison pills” including an expensive buyout for any worker sacked by a buyer.

Microsoft has lost out and may now look elsewhere to take the fight to Google. Yet there are few obvious targets that would give it the boost that Yahoo! offers, although AOL is a possibility. Yahoo!’s shareholders also stand to lose heavily. Shareholders may not take kindly to a boss who has turned down a fair offer for the company—although Microsoft may yet return to the fray and bid for Yahoo! at a later date. Amid all the dissatisfaction that the fight did not reach a conclusion one winner stands out. Google still has no worthy competitor to challenge for its title as heavyweight champion of the internet.

Pursuing the Next Level of Artificial Intelligence

Pursuing the Next Level of Artificial Intelligence


Jim Wilson/The New York Times

Daphne Koller’s award-winning work in artificial intelligence has had commercial impact.

Published: May 3, 2008

PALO ALTO, Calif. — Like a good gambler, Daphne Koller, a researcher at Stanford whose work has led to advances in artificial intelligence, sees the world as a web of probabilities.

There is, however, nothing uncertain about her impact.

A mathematical theoretician, she has made contributions in areas like robotics and biology. Her biggest accomplishment — and at age 39, she is expected to make more — is creating a set of computational tools for artificial intelligence that can be used by scientists and engineers to do things like predict traffic jams, improve machine vision and understand the way cancer spreads.

Ms. Koller’s work, building on an 18th-century theorem about probability, has already had an important commercial impact, and her colleagues say that will grow in the coming decade. Her techniques have been used to improve computer vision systems and in understanding natural language, and in the future they are expected to lead to an improved generation of Web search.

“She’s on the bleeding edge of the leading edge,” said Gary Bradski, a machine vision researcher at Willow Garage, a robotics start-up firm in Menlo Park, Calif.

Ms. Koller was honored last week with a new computer sciences award sponsored by the Association for Computing Machinery and the Infosys Foundation, the philanthropic arm of the Indian computer services firm Infosys.

The award to Ms. Koller, with a prize of $150,000, is viewed by scientists and industry executives as validating her research, which has helped transform artificial intelligence from science fiction and speculation into an engineering discipline that is creating an array of intelligent machines and systems. It is not the first such recognition; in 2004, Ms. Koller received a $500,000 MacArthur Fellowship.

Ms. Koller is part of a revival of interest in artificial intelligence. After three decades of disappointments, artificial intelligence researchers are making progress. Recent developments made possible spam filters, Microsoft’s new ClearFlow traffic maps and the driverless robotic cars that Stanford teams have built for competitions sponsored by the Defense Advanced Research Projects Agency.

Since arriving at Stanford as a professor in 1995, Ms. Koller has led a group of researchers who have reinvented the discipline of artificial intelligence. Pioneered during the 1960s, the field was originally dominated by efforts to build reasoning systems from logic and rules. Judea Pearl, a computer scientist at the University of California, Los Angeles, had a decade earlier advanced statistical techniques that relied on repeated measurements of real-world phenomena.

Called the Bayesian approach, it centers on a formula for updating the probabilities of events based on repeated observations. The Bayes rule, named for the 18th-century mathematician Thomas Bayes, describes how to transform a current assumption about an event into a revised, more accurate assumption after observing further evidence.

Ms. Koller has led research that has greatly increased the scope of existing Bayesian-related software. “When I started in the mid- to late 1980s, there was a sense that numbers didn’t belong in A.I.,” she said in a recent interview. “People didn’t think in numbers, so why should computers use numbers?”

Ms. Koller is beginning to apply her algorithms more generally to help scientists discern patterns in vast collections of data.

“The world is noisy and messy,” Ms. Koller said. “You need to deal with the noise and uncertainty.”

That philosophy has led her to do research in game theory and artificial intelligence, and more recently in molecular biology.

Her tools led to a new type of cancer gene map based on examining the behavior of a large number of genes that are active in a variety of tumors. From the research, scientists were able to develop a new explanation of how breast tumors spread into bone.

One potentially promising area to apply Ms. Koller’s theoretical work will be the emerging field of information extraction, which could be applied to Web searches. Web pages would be read by software systems that could organize the information and effectively understand unstructured text.

“Daphne is one of the most passionate researchers in the A.I. community,” said Eric Horvitz, a Microsoft researcher and president of the Association for the Advancement of Artificial Intelligence. “After being immersed for a few years with the computational challenges of decoding regulatory genomics, she confided her excitement to me, saying something like, ‘I think I’ve become a biologist — I mean a real biologist — and it’s fabulous.’ ”

To that end, Ms. Koller is spending a sabbatical doing research with biologists at the University of California, San Francisco. Because biology is increasingly computational, her expertise is vital in gaining deeper understanding of cellular processes.

Ms. Koller grew up in an academic family in Israel, the daughter of a botanist and an English professor. While her father spent a year at Stanford in 1981 when she was 12, she began programming on a Radio Shack PC that she shared with another student.

When her family returned to Israel the next year, she told her father, the botanist, that she was bored with high school and wanted to pursue something more stimulating in college. After half a year, she persuaded him to let her enter Hebrew University, where she studied computer science and mathematics.

By 17, she was teaching a database course at the university. The next year she received her master’s degree and then joined the Israeli Army before coming to the United States to study for a Ph.D. at Stanford.

She didn’t spend her time looking at a computer monitor. “I find it distressing that the view of the field is that you sit in your office by yourself surrounded by old pizza boxes and cans of Coke, hacking away at the bowels of the Windows operating system,” she said. “I spend most of my time thinking about things like how does a cell work or how do we understand images in the world around us?”

In recent years, many of her graduate students have gone to work at Google. However she tries to persuade undergraduates to stay in academia and not rush off to become software engineers at start-up companies.

She acknowledges that the allure of Silicon Valley riches can be seductive. “My husband still berates me for not having jumped on the Google bandwagon at the beginning,” she said. Still, she insists she does not regret her decision to stay in academia. “I like the freedom to explore the things I care about,” she said.