Status: For review by WG2 Date: 2007-09-18 Distribution: WG2 Reference:

, character sets are used in text streaming which are mostly included in Unicode and ISO/IEC 10646. In addition to regular Japanese text (broadly conceived as a mixed of Romaji (ASCII), Hiragana, Katakana, and Kanji) many symbols are also used. Most of these symbols are already encoded in the standard mentioned earlier. However many still are not and that has lead to the creation of Private Use characters in fonts used in the ARIB context. It would be desirable to encode many of these symbols to avoid confusion with end user created private characters. This document is categorizing them in usage groups: � Traffic signs � Audio/Video symbols � Map/Guide symbols � Arrows � Numbers followed by period � Chad symbols � Japanese date symbols � Japanese currency symbol � Squared Latin abbreviations � Miscellaneous symbols � Registry Office symbols (?) � Numbers followed by comma � Parenthesized ideographs � Circled Ideographs � Geometric shapes � CJK brackets � Miscellaneous symbol

Society of Physics Students

This report summarizes progress on the development of a neutron source from an existing commercial product. The targeted tabletop device uses a pyroelectric crystal to create an electric field that accelerates deuterium ions towards a deuterated target to produce neutrons via fusion. A pyroelectric X-ray generator was characterized and its performance successfully compared with the manufacturer's specifications. A second special "opened " device was obtained from the vendor. A vacuum chamber in which to operate this device in a partial vacuum (and then later with deuterated gas) has been designed and is currently being fabricated. The project will continue next semester with the completed vacuum chamber and the conversion of the pyroelectric X-ray generator to a pyrofusion neutron generator. The neutrons will be characterized and used to further study particle interactions by Indiana University undergraduate students. Review of Project Pyroelectricity is the ability of certain materials to generate an electrical potential when they are heated or cooled. A research paper [1] was published in Nature in mid-2005 about an experiment that used a pyroelectric crystal to achieve nuclear fusion. Pyroelectric fusion is the process by which a pyroelectric crystal in a vacuum is cooled down and then slowly heated. Du

Historical Overview of the Duployéan and adaptations

The Duployéan shorthands and Chinook script are used as a secondary shorthand for writing French, English, German, Spanish, Rumanian, and as an alternate primary script for several first nations ' languages of interior British Columbia, including the Chinook Jargon, Okanagan, Lilooet, Shushwap, and North Thompson. The original Duployéan shorthand was invented by Emile Duployé, published in 1860, as a stenographic shorthand for French. It was one of the two most commonly used shorthand systems in France, being more popular in southern France and adjacent French speaking areas of other countries. Adaptations of Duployéan were developed for the representation of English, German, Spanish, and Rumanian. The basic inventory of consonant and vowel signs- all in the first two columns of the allocation- have been augmented over the years to provide more efficient shorthands for these languages and to adapt it to the phonologies of these languages and the languages using Chinook writing. There currently exists no formal encoding, in any context, for the representation of the Duployan or Chinook. Indeed, the submission of the Duployan Shorthands and Chinook script to the Unicode Consortium has necessitated the creation, from scratch, of the first Duployéan/Chinook font, and the allocation is based solely on the internal logic and historical usage of the script. The Chinook script was an adaptation and augmentation of the Duployéan shorthand by fr. Jean Marie Raphael LeJeune, used for writing the Chinook Jargon and other languages of 19th c. interior British Columbia. Its original use and greatest surviving attestation is from the run of the Kamloops Wawa, a (mostly) Chinook Jargon newsletter of the Catholic diocese of Kamloops, British Columbia, published 1891-1923. At the time, the Chinook Jargon pidgin was widely spoken from SE Alaska to northern California, from the Pacific to the Rockies, and sporadically outside this area. Although the Chinook Jargon was th

LISA Source Confusion

The Laser Interferometer Space Antenna (LISA) will detect thousands of gravitational wave sources. Many of these sources will be overlapping in the sense that their signals will have a non-zero cross-correlation. Such overlaps lead to source confusion, which adversely affects how well we can extract information about the individual sources. Here we study how source confusion impacts parameter estimation for galactic compact binaries, with emphasis on the effects of the number of overlaping sources, the time of observation, the gravitational wave frequencies of the sources, and the degree of the signal correlations. Our main findings are that the parameter resolution decays exponentially with the number of overlapping sources, and super-exponentially with the degree of cross-correlation. We also find that an extended mission lifetime is key to disentangling the source confusion as the parameter resolution for overlapping sources improves much faster than the usual square root of the observation time.Comment: 8 pages, 14 figure

Side information source coding: low complexity design and source independence

Correlated sources X and Y are drawn i.i.d. according to probability mass function (pmf) p(x,y). In the side information source code (SISC) configuration: p(x,y) is known a priori to both the encoder and the decoder; the encoder knows X but not Y; the decoder knows Y but not X; the encoder encodes X and transmits the description of X to the decoder; the decoder reconstructs X using the source description and side information Y. The universal linked side information source code (ULSISC) configuration modifies the SISC configuration by assuming that p(x,y) is unknown a priori and that a asymptotically negligible amount of communication is allowed from the decoder to the encoder. We combine SISC design with ULSISC theory to build the codes for applications where the source statistics are unknown at design time. Experimental results compare ULSISC and SISC performance

Joint Source-Channel Decoding of Polar Codes for Language-Based Source

We exploit the redundancy of the language-based source to help polar decoding. By judging the validity of decoded words in the decoded sequence with the help of a dictionary, the polar list decoder constantly detects erroneous paths after every few bits are decoded. This path-pruning technique based on joint decoding has advantages over stand-alone polar list decoding in that most decoding errors in early stages are corrected. In order to facilitate the joint decoding, we first propose a construction of dynamic dictionary using a trie and show an efficient way to trace the dictionary during decoding. Then we propose a joint decoding scheme of polar codes taking into account both information from the channel and the source. The proposed scheme has the same decoding complexity as the list decoding of polar codes. A list-size adaptive joint decoding is further implemented to largely reduce the decoding complexity. We conclude by simulation that the joint decoding schemes outperform stand-alone polar codes with CRC-aided successive cancellation list decoding by over 0.6 dB.Comment: Single column, 20 pages, 8 figures, to be submitted to ISIT 201