virtual realities and health issues

In the last few years virtual realities have changed dramatically. They have evolved from video games to computer simulations, and while they have their advantages, they also have their disadvantages.A number of recent reports have suggested that the use of Virtual Reality equipment may have unwanted physical, physiological and psychological side-effects. These side affects pose a great threat to the users health. The side affects in the phisical side affects include:Posture, Repetitive Strain Injuries (RSI), Headset Weight and Fit ,Hygiene Issues
Immersion Injuries. Some physiological side affects include :Visual Issues ,imulator Sickness Symptoms , emulator Sickness Symptom Theories.

Other health issues include:

Immersion Injury
In using VR systems one must consider the surroundings in which the system is used. Any physical trauma occurring during VR use is termed an immersion injury. Users may become so involved and engrossed in their virtual world that they become unaware and even possibly disoriented with their immediate surroundings. Users might attempt unsafe acts while wearing a device such as an HMD. Such acts could include running or even jumping.

Transmittable Disease

Much of the equipment used in VR are potential fomites. A fomite is an object, that is not in itself harmful, but is able to harbor pathogenic organisms and thus may serve as an agent of transmission of an infection(2). VR applications are potential fomites because the equipment is used by multiple individuals. Airborne pathogens and skin flora thrive in environments similar to those of head mounted devices (HMD) and hand controllers. Airborne agents are typically polymicrobic including: Streptococcus species, Hemophilus influenza, and multiple viruses. Specific skin flora include Group A Streptococcus and Staphylococcus aureus which are likely present on virtually all surfaces with which users have had recent contact(3). Phthirus species (pediculosis) is also of concern for VR equipment contacting body surfaces.Cybersickness

Cybersickness has been described as a variant form of common motion sickness(4) which has adverse effects upon the visual, neural, and psychological status. Symptoms include: drowsiness, general discomfort, apathy, headache, stomach awareness, disorientation, fatigue, and incapacitation(5). The physiologic signs of cybersickness are changes in cardiovascular (increased heart rate and increased blood pressure), respiratory (increased rate), gastrointestinal ('dumping'), biochemical (mild alkalosis), and temperature regulation (hyperthermia) systems.
Research into the side effects of VR use is a However research does show that some symptoms occur whilst using VR tools and that these effects (such as nausea) can be quite debilitating in the short term. Whether or not there is a long term effect is difficult to determine, partly due to the fact that VR techniques are relatively new and are constantly evolving.

Neural Effects

The eyes are not alone at risk when using VR. The Central Nervous System (CNS) has the possibility of being affected by VR use. One such effect is the impact that an electromagnetic field (EMF) has upon the body. An EMF of intense magnitude could cause cellular damage with cellular and genetic material in the brain as well as other tissues. Although the exact levels of EMF are not known, research is ongoing and hopefully results are forthcoming. An additional problem that occurs in the CNS is "flicker vertigo." This is a condition in which individuals suffer from a seizure when a flickering light is observed(6). The resulting seizure manifests itself as nothing more than a brief loss of attention. Flicker vertigo is very uncommon and occurs usually on a flicker frequency of 8 to 12 Hz.

Research into the side effects of VR use is a complex and difficult and it is clear that concerns do remain about the effects of using these systems. Research does show that some symptoms occur whilst using VR tools, and that these effects (such as nausea) can be quite weakening in the short term. Whether or not there is a long term effect is hard to determine, because of the fsct that VR are relatively new technology and continuously evolving. That is why we need to increase public awarness so that they could understand the damages before finding out the hard way.

Review questions page 221 3's 2-6

2-Bitmap graphics are the most common graphic format in use on the web and, indeed, on the computer. With the exception of Flash

Advantages:
Disadvantages:

Object oriented graphics are a Type of computer graphics that are comprised of object elements, such as a circle or a line. Once placed, these objects can then be modified or otherwise adjusted.

Advantages:
Disadvantages:

3-color depth,and resolution, they both use pixels that depend on the the screen on a computer, and are reflected by the images that are pre stored on a computer


4-because they are both created with tools using similar high-resolution paint program


5-It allows users to create 3 dimentional solid models with phisical charactaristics such as wight, volume, and center of gravity. these models can also be visually rotated to view from any angle.
6-image compressing is part of digital video technology because it is crucial for saving files and making them as small as possible for storing purposes.

presentations

Word processing
- are applicationbs people use to manipulate tools and numbers.
Many functiuonts from entering text to printing to proof reaing
-Character formatting allows you to control the format of documnts character,

• All modern processors use what you see what you get
• outliers are idea processor, they have three functions
• Arrange info
• REARRANGE IDEAS
• they replace note cards
• Digital references are like dictionaries etc
• They make things easier to look up things
• Spelling checker checks spelling with words used int he dictionary database
• The problem is limitations of these databases.

______________________

• Digital media forms are likely to eclipse
• Communication medium easy and inexpensiveness to reach.
• Problems vary from copyright protection
• Posting on the web is open to all people.
• Solutions: Eventually their will be some kind of tecnlogy that takes money from you that goes towards artist
• The devises are commercial fail for many reasons____________________________________

_________

• 
  

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1- RAtional databse mangment system
2- Name,identification number,Next appointment
3-query
4-Because data bases contain private information, so anyone who access your personal information can use for the bad reason.Like identity theft
5- Security,Authenticity,Reliability
6-From hackers, The govenmrnt can improve the securit on these databases.

News buble

Gangs
http://www.greenbaypressgazette.com/article/20100412/GPG0101/4120447/1207/gpg01

Notes of essay presentation:

Culture:

• Very little info is private
• it can be used to steal identity
• Info is all over the internet
• Their are laws to keep info private
• Europe is stricter than the US in matters of privacy

Rights OF individual

• Some problem are in biometrics in the case of privacy
• Some argue that it is evasion of privacy
• Undemocratic
• Other regulation regarding data collection with the government
• US has loose privacy laws
• Many sites to dig in about people.
• Not illegal to stalk people

SOCIAL CONSEQUENCES

_Ethical issues

• Most laws require databases to perform tasks to collect data.
• Data base must inform owner that his data is being collected, and also.
• They must also give access to owner to change and edit info about himself.

Responsibility for the security of Data

• Database is updated as recent as twice a day
• Many Hackers today steal information from companies that you trust with your information
• People must try to check to see if their are any threats and if so one must freeze the account as soon as possible.

Discussion questions

2- During the spring break i created a spreadsheet for what i needed to complete these remaining months. Since i created my planner on excel spread sheet i organized it and saved it on a computer. A database is a comprehensive collection of related data organized for convenient access, generally in a computer.
3-It is very important for me to constantly check on my balance, because if i dont keep track of my spending i can sometimes go wild. I like to keep myself in check so that i dont spend money on useless items.I check my balance inquiry around every week.
5- I think you pay the 100 dollars first then sue the company. The reason behind this is that if you refuse to wait you will damage your credit over a mere 100 dollars. if you sue and refuse to pay you will spend more than a 100 dollars on the lawyer and in the end you dont gain anything because you keep your 100. So paying you 100 dollars insures that they wont damage you credit, then suing them comes later when you can demand the you money back plus reinbursment.
7- I would be upset that the FBI is suspicious of me, but not that they are checking on educational medical,and library records.I would scare and make me mad if they followed me daily,and tracked my purchases.

Review questions 7-11

7-Database programs enable users to store, organize, retrieve, communicate, and manage large amounts of information quickly and efficiently. Each database is made up of tables, which are, in turn, collections of records, and each record is made up of fields containing text strings, numbers, and other chunks of information. Database programs enable users to view data in a variety of ways, sort records in any order, and print reports, mailing labels, and other custom printouts
8-their isn't a clear way to reduce errors in a system but scientist are working to find a way to solve this problem and increase the reliability if their products to their consumers.
9- Record matching works when companies gather little bits of information and compile them to make an assumption about you.
10- This topic has been debated by many scholars some say it is not present in the constitution, and others say that some amendment just further imply this meaning. But here in the US we do have the right to privacy in some ways, but even that has changed because of the Patriot act.
11- Computers are the easiest way to invade privacy, often because it is very hard to track people.

page 259 #2-6

2-A file manager or file browser is a computer progran that provides a user interface to work with file sytems, A Database Management System is a set of computer programs that controls the creation, maintenance. They are similar in that they are both programs.

3-The structure of a relational database is based on the relational model―a mathematical model that combines data in tables.
4-Query is finding records that match specific criteria, they could help questions about anything because they are like a text searching device.
5-
6-
Advantages:privacy
Disadvantages:too costly