Ambient Backscatter: Wireless Communication Out of Thin Air
Vincent Liu, Aaron Parks, Vamsi Talla, Shyamnath Gollakota, David Wetherall, Joshua R. Smith
University of Washington
cfw_liuv, anparks, vamsit, gshyam, djw, firstname.lastname@example.org
We present the
You probably have experienced the symptoms of dizziness. It can best be described as a sensation
of unsteadiness or light-headedness. In some cases, it may be associated with a feeling of faintness.
However, with dizziness, you do not actually fai
Even though your femur is the largest and strongest bone in your body, it may be subjected to pain
and stiffness as a result of arthritis, dislocation, fracture, or other injury.
Arthritis most commonly causes symptoms of hip pain, especially whe
Most people do not realize that the bone is actually living tissue. Any injury or infection of bone is
usually quite painful. A bone may be bruised from any blunt injury. If severe, such bruises may take
several weeks to heal. Persistent pain, l
Like any other joint in your body, your ankle may gradually become painful from any of the causes
of arthritis mentioned earlier. Severe ankle pain results from an acute injury such as a strain or
sprain. A strain is a mild stress on a muscle o
While most people do not understand the anatomy of their digestive systems, almost everyone has
experienced abdominal pain, nausea, vomiting, or diarrhea at some time. In evaluating what seem to
be digestive symptoms, your doctor must suspe
Most leg pain and other leg symptoms are due to cramps that originate in the muscles of your thigh
and calf. Usually, there is no serious underlying cause. Occasionally, other more serious conditions
(such as varicose veins or phlebitis) can caus
COUGH /SHORTNESS OF BREATH
A cough is one way your body prevents irritating particles that enter your airways from invading
your lungs. Viruses and bacteria that cause infectionas well as dust, smoke, and pollenare
trapped in the tiny hairs (cilia) that l
Knee wraps have long been a mainstay for competitive powerlifters, and for good reason. When
properly used, wraps can dramatically improve knee safety during heavy squatting and leg training
sessions. Whenever you contract your quadriceps muscl
Fever is probably the single most important symptom of illness. It is also one of the main ways in
which your body defends itself against disease. Normally, oral body temperature ranges between
96.8 and 99.3 degrees Fahrenheit. Like a built-in therm
Everyone has had a cut, a nosebleed, or a tooth pulled. Whatever the reason, anytime a blood vessel
is torn, blood leaks into the tissue. Usually, this bleeding stops within minutes. Certain substances
(factors) in your blood, together with speci
Blood Pressure Measurement
There are three types of sphygmomanometers used to measure blood pressure: mercury,
aneroid, and digital.
Position: supine, seated, standing.
In seated position, the subject's arm should be flexed.