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how to deal with recommendations for objects whose value diminishes with the number of people who use it.

Clearly the resulting distribution of these different types of particles is entirely different.

The analogy here is with goods that any number of people can share or that only one person can have.

Then something unexpectedly amazing happened. Maher El-Kady, a graduate student in chemist Richard Kaner’s lab at UCLA, wondered what would happen if he placed a sheet of graphite oxide—an abundant carbon compound—under a laser. And not just any laser, but a really inexpensive one, something that millions of people around the world already have—a DVD burner containing a technology called LightScribe, which is used for etching labels and designs on your mixtapes. As El-Kady, Kaner, and their colleagues described in a paper published last year in Science, the simple trick produced very high-quality sheets of graphene, very quickly, and at low cost.

GitHub has no managers among its 140 employees, for example. “Everyone has management interests,” he said. “People can work on things that are interesting to them. Companies should exist to optimize happiness, not money. Profits follow.” He does, however, retain his own title and decides things like salaries.

Another member of GitHub has posted a talk that stresses how companies flourish when people want to work on certain things, not because they are told to.

Asana bases work on a series of to-do lists that people assign one another. Inside Asana there are no formal titles, though like GitHub there are bosses at the top who make final decisions.

ShapeTape is a fiber optic based 3D bend and twist sensor, that knows where it is continuously along its length, providing accurate position and orientation information, even when in partial or variable contact with an object or person. ShapeTape can be used on its own, built into or attached to a structure, or attached to a person to form real-time 3D computer images and collect data corresponding to complex shapes. A high-speed (10kHz), non-multiplexed version is available for rapid data acquisition.

As the inventor, you collect royalties on all sales and can focus on enjoying life and inventing new things. RobotShop is here for you and expedites what used to take years and thousands of dollars to make happen.

Currently this catheter method requires the use of three different devices, which are inserted into the heart in succession: one to map the heart's signals and detect the problem area, a second to control positions of therapeutic actuators and their contact with the epicardium, and a third to burn the tissue away.

The device is designed to deliver critical, high quality information - such as temperature, mechanical force, and blood flow - to the surgeon in real time.

IonOptix is proud to announce the release of the MyoStretcher, our new cardiomyocyte force measurement system.  Facilitated by the arrival of IonOptix MyoTak, our bio-compatible cell adhesive, we've developed the MyoStretcher with a focus on simplicity, ease-of-use and reliability.  The MyoStretcher includes all of the necessary components to stretch as well as record force in isolated myocytes.  In addition to the sensitive force transducer, motorized micro-manipulators and all component fittings, we also offer an optional piezo-electric translator for programmable stretching and a kit to facilitate attachment of glass rods to the MyoStretcher arms.

A Chubb detector lock is a type of lever tumbler lock with an integral security feature, a form of relocker, which frustrates unauthorised access attempts and indicates to the lock's owner that it has been interfered with. When someone tries to pick the lock or to open it using the wrong key, the lock is designed to jam in a locked state until (depending on the lock) either a special regulator key or the original key is inserted and turned in a different direction. This alerts the owner to the fact that the lock has been tampered with.

Smart card

There are two types of smart cards: contact and contactless. Both have an embedded microprocessor and memory. The smart card differs from the proximity card in that the microchip in the proximity card has only one function: to provide the reader with the card's identification number. The processor on the smart card has an embedded operating system and can handle multiple applications such as a cash card, a pre-paid membership card, or an access control card.

A contactless card does not have to touch the reader or even be taken out of a wallet or purse. Most access control systems only read serial numbers of contactless smart cards and do not utilize the available memory. Card memory may be used for storing biometric data (i.e. fingerprint template) of a user. In such case a biometric reader first reads the template on the card and then compares it to the finger (hand, eye, etc.) presented by the user. In this way biometric data of users does not have to be distributed and stored in the memory of controllers or readers, which simplifies the system and reduces memory requirements.