Best Desktop Search Application?

You saved a file somewhere on your system, and all you can remember is a phrase or snippet of text you wrote inside of it. How do you go about finding the file? If you know the filename, it can be easy with your OS's built-in tools, but if you're searching contents, file types, or created/modified dates, it can get tough. Thankfully there are desktop search utilities that help, and this week we want to know which ones you think are the best.

It's been a long time since we last touched on this topic, and some of the ones we loved back then (including Google Desktop Search), are long gone now. Have you found a favorite that you've stuck with over the years, or has the need for these tools diminished since then? Sound off with your nomination in the discussions below.

Hive Five nominations take place in the discussions, where you post your favorite tool for the job. We get hundreds of nominations, so to make your nomination clear, please include it at the top of your post like so: VOTE: BEST DESKTOP SEARCH APPLICATION. Please don't include your vote in a reply to another person. Nominations emailed to us will not be counted. Instead, make your vote and reply separate discussions. After you've made your nomination, let us know what makes it stand out from the competition.

About the Hive Five: The Hive Five feature series asks readers to answer the most frequently asked question we get: "Which tool is the best?" Once a week we'll put out a call for contenders looking for the best solution to a certain problem, then YOU tell us your favorite tools to get the job done. Every weekend, we'll report back with the top five recommendations and give you a chance to vote on which is best. For an example, check out last week's five best a/v receivers.

The Hive Five is based on reader nominations. As with most Hive Five posts, if your favorite was left out, it's not because we hate it?it's because it didn't get the nominations required in the call for contenders post to make the top five. We understand it's a bit of a popularity contest, but if you have a favorite, we want to hear about it. Have a suggestion for the Hive Five? Send us an email at tips+hivefive@lifehacker.com!

Source: http://feeds.gawker.com/~r/lifehacker/full/~3/tr3gIqZ-JSk/best-desktop-search-application

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Fusion as an energy source? Physicists demonstrate the acceleration of electrons by a laser in a vacuum

Feb. 27, 2013 ? Accelerating a free electron with a laser has been a longtime goal of solid-state physicists. David Cline, a distinguished professor in the UCLA Department of Physics and Astronomy, and Xiaoping Ding, an assistant researcher at UCLA, have conducted research at Brookhaven National Laboratory in New York and have established that an electron beam can be accelerated by a laser in free space.

This has never been done before at high energies and represents a significant breakthrough, Cline said, adding that it also may have implications for fusion as a new energy source.

In free space, a plane-wave laser is unable to accelerate an electron, according to the Lawson-Woodward theorem, posited in 1979. However, Yu-kun Ho, a professor at China's Fudan University in Shanghai, and his research group have proposed a concept of what physicists refer to as the capture-acceleration scenario to show that an electron can be accelerated by a tightly focused laser in a vacuum.

In the capture-acceleration scenario, the diffraction from a tightly focused laser changes not only the intensity distribution of the laser but also its phase distribution, which results in the field phase velocity being lower than the speed of light in a vacuum in some areas.

Thus, a channel that overlaps features of both strong longitudinal electric field and low-laser-phase velocity is created, and electrons can receive energy gain from the laser. The acceleration effect increases along with increasing laser intensity, Cline said. This channel for electrons may be useful for other scientific endeavors, such as guiding an electron beam into a specific region of laser fusion applications, he said.

A possible application of this discovery is the use of laser plasma fusion to provide a new energy source for the U.S. and other countries. The focus of the laser generates a natural channel that can capture electrons and drive them into a pellet that explodes, by fusion, to produce excess energy, Cline said.

With federal funding from the U.S. Department of Energy, a project to carry out a proof-of-principle beam test for the novel vacuum acceleration at Brookhaven National Laboratory's Accelerator Test Facility (BNL-ATF) has been proposed and approved -- a collaboration among the UCLA Center for Advanced Accelerators, of which Cline is principal investigator, Ho's group and the Accelerator Test Facility team.

BNL-ATF is one of the few facilities that can provide both a high-quality electron beam and a high-intensity laser beam for the beam test, Cline said. Ho's group provides theoretical support. UCLA scientists -- Cline, Ding and Lei Shao, a former UCLA physics graduate student of Cline's -- are responsible for the whole experiment and the experimental data analysis.

Simulation research work and hardware design have been done in accordance with BNL-ATF's experimental conditions. The simulation results predict that vacuum laser acceleration phenomena can be observed with ATF's diagnostic system.

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Story Source:

The above story is reprinted from materials provided by University of California - Los Angeles.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.

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Journal References:

1. L. Shao, D. Cline, X. Ding, Y.K. Ho, Q. Kong, J.J. Xu, I. Pogorelsky, V. Yakimenko, K. Kusche. Simulation prediction and experiment setup of vacuum laser acceleration at Brookhaven National Lab-Accelerator Test Facility. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013; 701: 25 DOI: 10.1016/j.nima.2012.09.053
2. David Cline, Lei Shao, Xiaoping Ding, Yukun Ho, Qing Kong, Pingxiao Wang. First Observation of Acceleration of Electrons by a Laser in a Vacuum. Journal of Modern Physics, 2013; 04 (01): 1 DOI: 10.4236/jmp.2013.41001

Note: If no author is given, the source is cited instead.

Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/oRWFsnC7UMg/130228093833.htm

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Samsung KNOX Is Brilliant - Business Insider

Earlier this week, Samsung announced its latest way to win business from Apple: a technology called Samsung Knox.

Knox is a new feature that is part of Samsung's SAFE program (which stands for Samsung For Enterprises).?It lets you divide your phone into two halves, one side for work and one side for your personal life.

The work side can be controlled by an employer's IT department. IT can dictate the apps and add all the pesky security features and controls they want. The personal side is controlled by you, and that's where you can load whatever games or other Android apps you want.

Knox is available on any SAFE-certified phone. Right now that's the Samsung Galaxy S III and Galaxy Note II.

So far, reviewers like it. The Verge's Chris Ziegler say it's easy to tell the work side from personal side and switching between them is quick. CNET's walkthough showed it was simple to use, too.

Samsung isn't the first to come up with this idea. Enterprise software company VMware also has a product like this called Horizon Mobile.?LG even won an award last year at CES for its LG Revolution phone which included Horizon software. Plus, BlackBerry offers a similar thing with its new phone, a feature called BlackBerry Balance.

VMware hoped to bring Horizon to the iPhone, too. That would have been big news, because it would have meant Apple was willing to let VMware fiddle with iOS. Not so. VMware does have an iOS app called Horizon Mobile, but the app only allows IT professionals to install apps on an employee's iPhone. It doesn't split the phone into two.

Knox and SAFE are two of Samsung's biggest weapons to win against Apple. Samsung is deliberately loading its smartphones with features to make enterprise IT departments love it. Its hope is that this will encourage IT departments to buy fleets of phones for their employees. Or, if they don't buy the phones, Samsung would like IT professionals to ask their employees to buy Samsung SAFE devices.

Stay tuned for BI Intelligence's in-depth analysis of how Samsung is pursing the enterprise, publishing soon.

Now Watch: Here's Our Verdict On The Samsung Ativ Windows Phone

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Source: http://www.businessinsider.com/samsung-knox-is-brilliant-2013-2

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