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Mt,

symbol for the element meitneriummeitnerium
, artificially produced radioactive chemical element; symbol Mt; at. no. 109; mass number of most stable isotope 276; m.p., b.p., sp. gr., and valence unknown. Situated in Group 9 of the periodic table it is expected to have properties similar to those of iridium.
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Montana State Information

Phone: (406) 444-2511
www.mt.gov


Area (sq mi):: 147042.40 (land 145552.43; water 1489.96) Population per square mile: 6.40
Population 2005: 935,670 State rank: 0 Population change: 2000-20005 3.70%; 1990-2000 12.90% Population 2000: 902,195 (White 89.50%; Black or African American 0.30%; Hispanic or Latino 2.00%; Asian 0.50%; Other 8.60%). Foreign born: 1.80%. Median age: 37.50
Income 2000: per capita $17,151; median household $33,024; Population below poverty level: 14.60% Personal per capita income (2000-2003): $22,929-$25,406
Unemployment (2004): 4.30% Unemployment change (from 2000): -0.50% Median travel time to work: 17.70 minutes Working outside county of residence: 8.30%

List of Montana counties:

  • Anaconda-Deer Lodge County
  • Beaverhead County
  • Big Horn County
  • Blaine County
  • Broadwater County
  • Butte-Silver Bow County
  • Carbon County
  • Carter County
  • Cascade County
  • Chouteau County
  • Custer County
  • Daniels County
  • Dawson County
  • Fallon County
  • Fergus County
  • Flathead County
  • Gallatin County
  • Garfield County
  • Glacier County
  • Golden Valley County
  • Granite County
  • Hill County
  • Jefferson County
  • Judith Basin County
  • Lake County
  • Lewis & Clark County
  • Liberty County
  • Lincoln County
  • Madison County
  • McCone County
  • Meagher County
  • Mineral County
  • Missoula County
  • Musselshell County
  • Park County
  • Petroleum County
  • Phillips County
  • Pondera County
  • Powder River County
  • Powell County
  • Prairie County
  • Ravalli County
  • Richland County
  • Roosevelt County
  • Rosebud County
  • Sanders County
  • Sheridan County
  • Stillwater County
  • Sweet Grass County
  • Teton County
  • Toole County
  • Treasure County
  • Valley County
  • Wheatland County
  • Wibaux County
  • Yellowstone County
  • Counties USA: A Directory of United States Counties, 3rd Edition. © 2006 by Omnigraphics, Inc.

    Montana Parks

    Parks Directory of the United States, 5th Edition. © 2007 by Omnigraphics, Inc.

    MT

    (physics)
    McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

    mt

    (networking)
    The country code for Malta.
    This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

    magnetic tape

    A sequential storage medium used for data collection, backup and archiving. The first electronic storage medium, magnetic tape is made of flexible plastic with one side coated with a ferromagnetic material. Tapes were originally open reels but were superseded by cartridges and cassettes of many sizes and shapes. Today, LTO is the only surviving tape technology. See LTO.

    Tape has always been more economical than disks for archival data; however, disk capacities have increased enormously while the cost per bit has been reduced dramatically. In addition, if tapes are stored for the duration, they must be periodically recopied or the tightly coiled magnetic surfaces may contaminate each other.

    Sequential Medium
    The major drawback of tape is its sequential format. Locating a specific record requires reading every record in front of it or searching for markers that identify predefined partitions. Although tapes today are used for archiving rather than real-time updating, some drives allow rewriting in place if the byte count remains the same. Otherwise, updating requires reading the original tape, changing the data or inserting new records and rewriting everything onto another tape.

    Track Formats
    Data are recorded in blocks of contiguous bytes, separated by a space called an "interrecord gap" or "interblock gap." Drive speed is measured in inches per second (ips). Over the decades, storage density jumped from 200 bits per square inch to millions and billions of bits.


    Tracks on Magnetic Tape
    Except for helical scan, most tracks on tape run parallel to the length of the tape. See helical scan and serpentine recording.







    An LTO Cartridge
    Linear Tape Open is the only tape drive technology that continues to be manufactured. See LTO.







    Old Tape Formats


    The following tape drives are no longer manufactured, although media may still be found. In order to read these tapes, the appropriate tape drive must be available, and drivers for such hardware may not work in current operating systems.

























































    MT/sec

    (MegaTransfers per SECond) A measurement of bus and channel speed in millions of "effective" cycles per second. Also written as "MT/s," it is a rating of the actual, delivered speed rather than the frequency of the clock. For example, if timing is derived from both the rising and falling edges of the cycle rather than one complete cycle, a 400 MHz clock yields 800 MT/sec.

    Gigatransfers
    For "gigatransfers," substitute the M with a G (GT/sec, GT/s). For example, at a double data rate, an 800 MHz clock yields 1.6 GT/sec.

    multithreading

    A feature within a CPU that allows two or more instruction streams (threads) to execute concurrently. Each stream is a "subprocess" that is managed by the CPU and operating system. Today's CPUs support a large number of threads. For example, IBM's POWER8 CPU comes with up to 12 cores, and each core handles eight threads for a total of 96 threads.

    Operating systems are written to use multithreading wherever possible; however, applications can also be written to take advantage of this parallel processing. If the application is very complex, the effort can be formidable even for experienced programmers. See SMP, re-entrant code, multicore, multiprocessing and hyperthreading.


    Threads Galore
    The cover of Software Development Times in November 2012 highlighted the issue that CPUs with many cores provide even more threads for the programmer.
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