AMBER

AMBER (an acronym for Assisted Model Building with Energy Refinement) is a family of force fields for molecular dynamics of biomolecules originally developed by Peter Kollman's group at the University of California, San Francisco. AMBER is also the name for the molecular dynamics software package that simulates these force fields. It is maintained by an active collaboration between David Case at Rutgers University, Tom Cheatham at the University of Utah, Tom Darden at NIEHS, Ken Merz at Michigan State University, Carlos Simmerling at Stony Brook University, Ray Luo at UC Irvine, and Junmei Wang at Encysive Pharmaceuticals.

Force field

The term "AMBER force field" generally refers to the functional form used by the family of AMBER force fields. This form includes a number of parameters; each member of the family of AMBER force fields provides values for these parameters and has its own name.

Functional form

The functional form of the AMBER force field is

Note that despite the term force field, this equation defines the potential energy of the system; the force is the derivative of this potential with respect to position.

Waigeo language

Waigeo, also known as Ambel (Amber), is a heavily Papuan-influenced Austronesian language spoken in West Papua on the island of Waigeo, Raja Ampat islands.

References

Amber (processor core)

The Amber processor core is an open-source ARM-compatible 32-bit RISC processor. It is hosted on the OpenCores website and is part of a movement to develop a library of open source hardware intellectual property. The Amber core is fully compatible with the ARMv2 instruction set and is therefore supported by the GNU toolchain. This older version of the ARM instruction set is supported because it is not covered by patents so can be implemented without a license from ARM Holdings, unlike some previous open source projects. The Amber project provides a complete embedded FPGA system incorporating the Amber core and a number of peripherals, including UARTs, timers and an Ethernet MAC.

There are two versions of the core provided in the Amber project. The Amber 23 has a 3-stage pipeline, a unified instruction and data cache, a Wishbone interface, and is capable of 0.75 DMIPS per MHz. The Amber 25 has a 5-stage pipeline, separate data and instruction caches, a Wishbone interface, and is capable of 1.0 DMIPS per MHz. Both cores implement exactly the same ISA and are 100% software compatible.

Dai

Dai may refer to:

Names

Acronyms

Dai (Warring States period)

Dai (Chinese: 代; pinyin: Dài) was a short-lived state from 227 BC to 222 BC during the Warring States period. Prince Zhao Jia, older brother of King Youmiu of Zhao, fled with the remnant forces to the former location of Dai after the Conquest of Zhao and proclaimed himself "King of Dai". It was conquered in the year 222 BC by Qin.

References

Daai Chin

The Daai are different ethnic tribe of Chin, Myanmar. In particular, the Daai women used to wear short woven skirt.In the fact that their traditional dress and their face tattoos are totally different. The Daai ethnic group is the 32 Chin tribes, which have been registered by the Government of Burma since 1890. The recent Military Regime’s census mentions the Daai tribe as the 62nd of 135 tribes of Burma. Researchers refer to them as Daai group in the ethnic survey book of Burma.The book written by Rigby, not as format book but as a diary of his journey, records the most primitive life-style of the Southern Chins, in which many Daai villages and populations are mentioned systematically, as British always do. The words Yindu and Daai are interchangeably used in that book.The Daai Chin appear to be of Mongolian, Indo-Chinese, and Tibeto-Burman descent as the other Chin tribes do. The Daai people live in the Mindat, Paletwa, Matupi and Kanpetlet townships of the Southern Chin State, Burma. There are more than 180 Daai villages with a total population of somewhere between 60,000 and 90,000. Their population makes the Daai-Chin the majority tribe in the Southern Chin Hills.