4,684 research outputs found
Georgetown and the city of Washington : the capital of the United States of America.
No full textShows block numbers, wards, extent of built-up area, and major buildings.; "Entered according to Act of Congress ... 1855 by J.H. Colton & Co. ... New York."; Includes ill.; "No. 24."; Accompanied by a sheet of text: "The District of Columbia"
Taylor Block
No full textPhotograph - Taylor Block building, Athabasca, Alberta. The building was built in 1913 as the Olivier Block by Dr. Olivier and was later purchased by J.H. Taylor and was turned into a grocery stor
D-2639: 558 East 200 South, Logan, Utah, J.H. Skablund residence. Lot 2 Block 18 or 22 Plat C
No full textD-2639: 558 East 200 South, Logan, Utah, J.H. Skablund residence. Lot 2 Block 18 or 22 Plat
The Stopping Set Property and the Iterative Decoding Performance of Binary Block Codes on BSC and AWGN Channel
No full textIn the field of Error Correcting Coding (ECC), the concept of ''stopping set'' recently became a hot topic. A stopping set for a parity-check matrix is the set of bits which would cause the iterative decoding progress in Binary Erasure Channel (BEC) to ''stop'' when it is erased. It has already been proved in several papers that the decoding performance under iterative decoding algorithm of any linear block code in BEC is determined by their stopping set performance, in particular, their size and number. And it is commonly assumed by the coding researchers that those codes which have better stopping set performance would also perform better in other channels. In this thesis, the decoding performance of linear block codes, in particular, Hamming Codes, the original LDPC code proposed by Gallager and FG-LDPC codes is studied in Binary Symmetric Channel (BSC) and Additive White Gaussian Noise (AWGN) channel. Three iterative decoding algorithms, respectively Bit-Flipping algorithm, Weighted Bit-Flipping algorithm and Sum Product Algorithm are used. To emphasize the influence of stopping set property, the parity-check matrix for each code is modified by adding linearly dependent rows to the original parity-check matrix, or removing rows from it. These modifications are made in order to change the stopping set property of the codes. The performance of the modified parity-check matrices is thus analyzed, by comparing them to the original ones, using both theoretical analysis and simulation. The results show that the stopping set performance of linear block codes is not a crucial factor to their performances on other channels as it is in BEC. Sometimes the linear block codes of a better stopping set property do perform better in other channels, but sometimes the performance barely changes or even degrades. More precisely, the decoding performance of a certain parity-check matrix is determined by the type of codes, the type of channel and the decoding algorithm, rather than its stopping set property.Wireless and Mobile Communication GroupTelecommunicationsElectrical Engineering, Mathematics and Computer Scienc
Low-complexity trellis decoding of linear block codes.
No full textThe authors introduce a new simple encoding technique which allows the design of a wide variety of linear block codes. They present a number of examples in which the most widely used codes (Reed-Muller, Hamming, Golay, optimum etc.) have been designed. They also introduce a novel trellis design procedure for the proposed codes. It is shown that the trellises of the designed codes are similar to the trellises of coset codes and allow low complexity soft maximum likelihood decoding
Block Copolymer Nanofibrillar Micelles: gelation, manipulation and applications
No full textSelf-assembly of amphiphilic block copolymers in aqueous solution provides a versatile tool to create complex and functional micelles with various nanostructures, such as spherical, cylindrical and bilayer structures. As an important class in these structures, nanofibrillar micelles have attracted growing interest due to their unique properties that can potentially mimic biological analogues. For example, a great number of nanofibrillar structures, such as actin filaments and collagen gels with filamentous structures, were found in nature systems and have greatly motivated researchers to mimic these systems with synthetic materials. Besides, precise spatiotemporal control and integration of these nanofibrillar structures will offer a powerful strategy for construction of new soft devices in the future. Therefore, in this thesis, we explore the ultra-long, stiff and quenched micelles of diblock copolymers and develop a hybrid approach combining self-assembly of block copolymers and micro-fabrication methods to manipulate these micelles for building soft devices
Revelations. The epistle of Nathan the Wise ...
No full textAttributed to J.H. Donlevy by whom copyright was secured.Cover-title.Mode of access: Internet
Binary Block Codes for Noisy Channels with Unknown Offset
No full textDecoders minimizing the Euclidean distance between the received word and the candidate codewords are known to be optimal for channels suffering from Gaussian noise. However, when the stored or transmitted signals are also corrupted by an unknown offset, other decoders may perform better. In particular, applying the Euclidean distance on normalized words makes the decoding result independent of the offset. The use of this distance measure calls for alternative code design criteria in order to get good performance in the presence of both noise and offset. In this context, various adapted versions of classical binary block codes are proposed, such as (i) cosets of linear codes, (ii) (unions of) constant weight codes, and (iii) unordered codes. It is shown that considerable performance improvements can be achieved, particularly when the offset is large compared to the noise.Accepted author manuscriptDiscrete Mathematics and Optimizatio
Block Card 407 Cumberland Place
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: outbuildings | J.H. Bellow's Subdivision | Lagrange-Central Area | North Toled
Telling stories: a metagame description of a conflict
No full textThis paper describes the use of metagame analysis to describe and explore a conflict situation. The analysis was carried out by the author, who was associated with one of the parties in the conflict, for his own benefit. A full description of the analysis is provided. A particular characteristic of the situation was that it was not possible to specify preferences for scenarios for any of the actors with a reasonable degree of confidence. This made the standard metagame analysis approach unworkable, and an alternative approach, involving the development of stories describing a variety of possible future events, was used instead
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