Expectancy Theory Search Results

How To: Sing better and improve your voice

Learn how to sing better and improve your voice with voice exercises, tips and techniques, and other vocal training and intermediate singing instruction with expert music tips in this free vocal coaching video series from a professional music theory teacher.

How To: Cut down a tree

In this how-to video clip instructional series, our expert demonstrates how to fell a tree using either a chainsaw or a rope or both. He informs us about the correct tools to use to cut down a tree and about the safety equipment one needs to fell trees. He also explains the process of cutting down a tree, including planning the felling, planning escape routes, wedging, cutting notches in the tree trunk, using a felling wedge, felling a tree with a rope and a truck cutting down a tree with a c...

How To: Race mountain bikes

Our mountain biking expert discusses the correct way to get over, around and through any obstacles you may encounter on your adventures. He also demonstrates proper weight distribution and riding techniques, and discusses modulation and braking theory. If these topics sound sophisticated, that's because they are, a veritable master's class in mountain biking physics. So get your degree today!

How To: Build a Laser Trip Wire Alarm System

Building a DIY Alarm System: The Concept So, you want to protect your property, or maybe a room, car, or even your backyard. The concept of an alarm system is to notify the "alarm administrator" that there is an intruder entering the previously designated boundaries. The triggers for this boundary could be as simple as a pressure sensor, or as complicated as a laser network. They all do the same thing, but some work better than others.

News: Apple Releases iOS 13.4 Developer Beta 3 for iPhone, Introduces First Evidence of Internet-Based 'OS Recovery' Mode

So far, iOS 13.4 hasn't been a disappointment. From new Memoji stickers, a refreshed Mail toolbar, and even the beginnings of controlling your car with your iPhone, Apple's latest iOS update is looking like a good one. That's why we're excited that Apple just released the third 13.4 developer beta today, one week after the release of the second one.

Dev Report: Some Light Shed on Magic Leap's Persistent Object Locations Solution but Many Mysteries Remain

With the reveal of Magic Leap's developer documentation last week, many questions have been answered—and several new ones have been raised as well. But since the Magic Leap One (ML1) isn't simply called the "Leap One," these are questions that the company probably has no interest (at least for now) in answering. Understandably, Magic Leap wants to keep some of the "magic" under wraps.

News: How Gut Bacteria Could Set Off the Immune System in Rheumatoid Arthritis

As if the swollen, painful joints of rheumatoid arthritis weren't enough, the disease is the result of our immune system turning against cells of our own body. Ever since this realization, scientists have worked to find the trigger that sets the immune system off. Scientists believe that gut bacteria may have a role in initiating the abnormal immune response. Now, a team of researchers from Boston has figured out how that might occur.

News: 4 Billion Year Old 'Fossil' Genes May Be Our Secret Weapon Against Infection

The evolution of our infection-fighting systems may have something to teach modern scientists. That's what a group from the University of Granada in Spain found when they studied a protein that's been around for over four billion years. Their work, by senior author José Sánchez-Ruiz and colleagues in the Department of Physical Chemistry, was published in the journal Cell Reports.

News: Taking Genetic Scissors to Infected Cells Could Cure HIV

Being infected with HIV means a lifetime of antiviral therapy. We can control the infection with those drugs, but we haven't been able to cure people by ridding the body completely of the virus. But thanks to a new study published in Molecular Therapy by scientists at the Lewis Katz School of Medicine (LKSOM) at Temple University and the University of Pittsburgh, all that may change.

How To: Fix Screen Burn-In on Your Galaxy S8 (& Prevent It from Happening Again)

Everyone's been talking about Samsung's new Galaxy S8 and S8+, but not all of the chatter is positive. The fingerprint scanner is in an awkward location, the North American variant is simply not as smooth and fluid as the international model, and Samsung Experience is nothing more than TouchWiz with a bow on it. But perhaps worst of all, user reports are starting to roll in that indicate the Galaxy S8 may have a serious problem with premature screen burn-in.