Essays Tagged: "signals"


orman 'to stimulate') are chemicals released by organisms into the environment, where they serve as signals or messages to alter behavior in other organisms of the same species. Pheromones are a class ...

(2 pages) 49 0 4.0 Dec/1996

Subjects: Science Essays > Chemistry


ent at home. As the years went by, there have been many advances in technology and ways to transmit signals through the air waves into people's homes. After all, this is what it's mostly used for, to ... 1992 NBC's WRC-TV in Washington DC became the first television station in the country to send HDTV signals over the air waves. WRC-TV's general manager then stated, 'With advanced digital high-defini ...

(3 pages) 72 1 3.2 Jun/1996

Subjects: Science Essays > Technology

Multiple Sclerosis.

rupted. The body then makes thisworse by repairing it, and clogging the area with scar tissue. Signals goingfrom your brain and brain stem, such as muscle coordination signals or visualsens ...

(4 pages) 114 0 4.2 Apr/1996

Subjects: Humanities Essays > Health & Medicine > Diseases

The Cybernetic Plot of Ulysses

to the novel'smany images of people sending, carrying, and receiving -- or distorting, or losing -- signals of varying import and value. Thisplot -- the plot of signals that are launched on perilous O ... to messages? They can be lost, like the words that Bloomstarts to scratch in the sand: 'I AM A...' Signals can be degraded by faulty transmission, like the telegram that Stephenreceived in Paris from ...

(11 pages) 91 0 3.4 Nov/1996

Subjects: Humanities Essays > Classical Studies > Mythology

"The Lord of the Flies (by Golding) is a picture of our society today." Discusses the statement and show how this statement applies.

n. This is the type of society the childrenlive in. Everything is a game until the beast. The beast signals the end of the gamesand start of reality. Lives are at stake in perspective of the boys and ...

(4 pages) 75 0 3.9 Dec/1996

Subjects: Literature Research Papers > European Literature > "Lord of the Flies" by Sir William Gerald Golding

Computer Security, Defines encryption and explain how it is used to protect transmission of information

character replacement) in which one unit (usually character) of cipher text (unintelligible text or signals produced through an encryption system) is substituted for a corresponding unit of plain text ... encryption system) is substituted for a corresponding unit of plain text (the intelligible text or signals that can be read without using decryption), according to the algorithm in use and the specif ...

(4 pages) 276 0 3.8 Apr/1997

Subjects: Science Essays > Computer Science

Claming Compensation in the courts, Closing address.

ken words or audible sounds, or by words intended to be read either by sight or touch, or by signs, signals, gestures, or visible representations, publishes and defamatory imputation concerning any pe ...

(3 pages) 67 1 2.3 Mar/2003

Subjects: Law & Government Essays > Law

The nervous system and its bodily functions.

les that sprout from the cell and the axon is one long extension of the cell. The dendrites receive signals from other neurons, while the axon sends impulses to other neurons. Axons can extend to more ... meter long. Average sized neurons have hundreds of dendrites; therefore it can receive thousands of signals simultaneously from other neurons. The neuron sends impulses by connection the axon to the d ...

(8 pages) 207 0 4.7 Mar/2003

Subjects: Science Essays > Biology > Human Biology

How is sex determined in Drosophila and Humans?

e fates vary according to the location of the cell in relation to the original zygote cell. Protein signals from this central cell control the cell division and specialisation of the various groups of ... of cells. This fate refinement may be entirely dependent on the lineage of the cell or affected by signals from neighbouring cells. This chemical dialogue between cells ensures that development proce ...

(8 pages) 57 0 2.0 May/2003

Subjects: Science Essays > Biology > Human Biology

Research Proposal on olfaction and gestation.

ndWhen we perceive the flavor of a food, we actually perceive the result of the brain's analysis of signals from the taste system in the mouth, coupled with signals from the olfactory system in the no ...

(2 pages) 53 0 3.0 Sep/2003

Subjects: Science Essays > Biology

The Clash of the Egos: A multi-author argumentative essay on Autos vs. bicyclists vs. pedestrians.

don't drive exactly how they think I should. Letting a cyclist weave in and out of traffic with no signals expecting me to yield to them at all times is far from what I consider acceptable behavior.W ...

(2 pages) 46 0 3.3 Dec/2003

Subjects: Social Science Essays

Sleeping Disorders.

vement sleep, occurs in humans during certain phases of sleep (brain basics). REM sleep begins with signals sent from the pons that then travel to the thalamus, which from there sends the signals to t ... for higher level learning and thinking (brain basics). The pons is also responsible for sending out signals to shut down neurons in the spinal cord in order to prevent one from acting out the dreams p ...

(12 pages) 208 2 3.3 Dec/2003

Subjects: Social Science Essays

Complete Analysis of Tourette's Syndrome, a genetic disease

3 to 4 times the amount of men than it does to women. It is caused by a nervous disorder that sends signals to the brain involuntarily. Even though, you may not want to do a certain thing, sometimes i ... ed dopamine, serotonin and nor epinephrine. Neurotransmitters are chemicals in the brain that carry signals from one nerve cell to another. A person with Tourette's has about a 50:50 chance of passing ...

(3 pages) 64 0 2.2 Dec/2003

Subjects: Humanities Essays > Health & Medicine > Diseases

This is an opinion essay on why space exploration is worth spending 15 billion dollars on it

echnology that NASA has developed helps us in everyday life. Satellites relay TV and communications signals. Information gathered in shuttle development prompted improvements in smoke detectors. The d ...

(2 pages) 63 0 3.8 Feb/2004

Subjects: Science Essays > Space

Internationalism vs Nationalism: Case Studies

mic alliances. Conversely, internationalism can include a loss of sovereignty and independence that signals a turning away from self-sufficiency. International agreements may not always be honored, an ...

(5 pages) 73 0 3.0 Mar/2004

Subjects: Social Science Essays

Crimal Mind

roubledchildren whose violent ways might be discoveredbefore it is too late. By watching for certainsignals educators hope to intervene before thesestudents actually complete a violent act.Some have f ...

(5 pages) 211 5 4.3 Mar/2004

Subjects: Social Science Essays > Psychology

Respiratory System - Muscular system

body send messages to your brain telling you that they need more oxygen. Your brain will then send signals to your muscles that control breathing so they can relax and you take fewer breaths and you ...

(1 pages) 50 1 3.0 Apr/2004

Subjects: Science Essays > Earth Sciences

The study of development

ts believe that human behavior and development are governed by automatic, genetically predetermined signals in maturation. There is a favorable period after birth called a critical period when the org ...

(2 pages) 240 0 3.3 Apr/2004

Subjects: Social Science Essays > Psychology

Two moons around Earth

our planet versus a manmade object placed into orbit around Earth in order to relay communications signals or transmit scientific data. Does the Earth have more than one natural satellite? Many peopl ...

(2 pages) 89 3 4.5 Apr/2004

Subjects: Science Essays > Astronomy

Satellites and Sputnik

hile the payload for a communications satellite includes large antennas to transmit TV or telephone signals to Earth.The bus is the part of the satellite that carries the payload and all its equipment ... lite to communicate with anyone else in Africa.We can also use satellites as a relay system to send signals anywhere on Earth. Here you can see the overlapping footprints of four different satellites. ...

(7 pages) 67 2 4.2 Apr/2004

Subjects: Science Essays > Space