Time Division Multiplexing (TDM) must be employed in multi-GSa/s transceivers in order to overcome onchip clock frequency limitations. This paper describes a transmit pre-emphasis filter for a multi-level transceiver making use of TDM. The possible applications of such a transceiver include serial links and chip-to-chip communication. The requirement of very low probability of error in the abse...

Whitening processing methods are proposed to improve the effectiveness of blind separation of speech sources based on ADF. The proposed methods include preemphasis, prewhitening, and joint linear prediction of common component of speech sources. The effect of ADF filter lengths on source separation performance was also investigated. Experimental data were generated by convolving TIMIT speech wi...

I update the SKA key science program (KSP) on first light and cosmic reionization. The KSP has two themes: (i) Using the 21cm line of neutral hydrogen as the most direct probe into the evolution of the neutral intergalactic medium during cosmic reionization. Such HI 21cm studies are potentially the most important new window on cosmology since the discovery of the CMB. (ii) Observing the gas, du...

High-school grades are often viewed as an unreliable criterion for college admissions, owing to differences in grading standards across high schools, while standardized tests are seen as methodologically rigorous, providing a more uniform and valid yardstick for assessing student ability and achievement. The present study challenges that conventional view. The study finds that high-school grade...

A rearranged TCR α transgene remains transcriptionally inactive in rag-2–/– thymocytes but can be induced by CD3-mediated signals with concomitant maturation of double-negative (DN) thymocytes to the CD4FCD8F double-positive (DP) stage. Reciprocally, the same signals silence pre-TCRα (pTα) expression. In normal C57BL/6 thymocytes, TCRα expression is not detected in DN thymocytes while, in contr...

While most organizational and social decision making is done in a group or collective mode. there are few guides or evaluative criteria for judging when a high-quality outcome has been reached. Most past studies of group decision making have been conducted in laboratories using student subjects and factual problems with correct answers as means for judging outcome quality. Such proxies are roug...

I. Deutsch's Crude Law of Social Relations Many years ago, my students and I were doing research to answer the question: What are the factors which determine whether a conflict will take a constructive or destructive course? (See Deutsch, 1973, for a summary and discussion of this research) After much research, a major simplifying idea occurred to me which I labeled Deutsch's Crude Law o/Social...

The flavor du jour in discussions of Islamic terrorism features a de-emphasis on the ideological component, drawing instead upon epidemiological and criminological concepts; approaching Mexican drug gangs and Islamic extremists as being more similar than they are different. This aids a network scrutiny and suggests buy-out rather than ideological deradicalization. Such new abandonments of the i...

and transformation of the vocal tract spectrum and the pitch contour. The first method (selective pre-emphasis) relies on band-pass filtering to perform vocal tract transformation. The second method (segmental pitch contour model) focuses on a more detailed modeling of pitch contours. Both methods are utilized in the design of a voice conversion algorithm based on codebook mapping. We compare t...

A code is called isodual if it is equivalent to its dual code, and a lattice is called isodual if it is isometric to its dual lattice. In this note, we investigate isodual codes over Z2k . These codes give rise to isodual lattices; in particular, we construct a 22-dimensional isodual lattice with minimum norm 3 and kissing number 2464.