Addiction of Second Life Online Game Essay Example | Topics and Well Written Essays - 1500 words

Addiction of Second Life Online Game - Essay Example They can as well chip in to the world around them, forming buildings and a number of other things, even simulations. Resident inclusions to the virtual world are known as user produced content, and this content is among the aspects that makes Second Life only one of its kind online setting, and have a huge number of users who are badly addicted to this game. For those who play Second Life, this is a game that is a lot more than just an ordinary game. For the players, it is an online word where they can have a chance to get a fresh start as well as a new â€Å"lease of life† (Kim et al, 2008, p. 214); and when people have a chance to make a fresh start thing, it can become somewhat hard not to get overly-involved in it. Each day, more and more people joining the Second Life and spending the most of their time within this virtual world. Whereas more or less everyone states that they play the game only for enjoyment, for the greater part of them, this is â€Å"more than just a g ame† (Kim et al, 2008, p. 215). Second Life utilizes the â€Å"Havok 1 physics engine† (Boulos et al, 2007, p. 236). This software creates actual physics inside a virtual setting. The physics engine decides the way avatars act inside the virtual world, together with crash recognition - the engine informs the software how the each item should respond as soon as they get are in touch, automobile activities and what simulations seem to be. The more refined the physics engine, the more realistic animations utilizing it will be.

Genetics of Retroviruses Essay Example | Topics and Well Written Essays - 1000 words

Genetics of Retroviruses - Essay Example The core contains two identical copies of the single stranded RNA genome. The RNA molecules are complexed with reverse transcriptase and tRNA. Other viral proteins like integrase are also components of the virion particle. The outer envelope glycoprotein (SU), is the major antigen of the virus, and is responsible for receptor binding. The trans-membrane glycoprotein (TM), holds the SU protein in the envelope, and is responsible for membrane fusion â€Å"All retrovirus genomes consist of two molecules of RNA, which are s/s, (+)sense and have 5 cap and 3 poly-(A) (equivalent to mRNA). These vary in size from ~8-11kb. Retrovirus genomes have 4 unique features: These two molecules are physically linked as a dimer by hydrogen bonds (co-sediment). In addition, there is a 3rd type of nucleic acid present in all particles, a specific type of tRNA (usually trp, pro or lys) - required for replication.† Gene order in all retroviruses is invariant: 5 - gag - pol - env - 3. The gag (group-specific antigen, core protein) gene encodes proteins that make up the nucleocapsid of the virus as well as a matrix layer, the two of which surround the RNA. The pol gene (RNA-dependent DNA polymerase) encodes three proteins, reverse transcriptase, which copies the RNA into DNA, integrase, which integrates the DNA into the host chromosome and protease, a protein that cleaves the Gag-Pol polyprotein into smaller protein products. The env gene encodes the envelope glycoproteins. â€Å"Some retroviruses have incorporated viral oncogene sequences.†( www.bookrags.com) The genomes of complex retroviruses, such as human T-cell lymphotropic virus (HTLV) cont ain additional genes (e.g., tax and rex) for regulatory proteins. R Region: A short (18-250nt) sequence which forms a direct repeat at the both ends of the genome, which is therefore terminally redundant.U5: A unique, non-coding region of 75-250nt