growth studies were conducted for humanitarian purposes. Heights and weights of children were measured to provide evidence of poverty, malnutrition, disease, and labour abuse in an attempt to bring about social reforms. The emphasis on social comment is a great strength of this book. The author not only explains what was done and how it was done (details of the methodology are always given wher...

This paper presents a new class of low-density parity-check (LDPC) codes over Z2a represented by regular, structured Tanner graphs. These graphs are constructed using Latin squares defined over a multiplicative group of a Galois ring, rather than a finite field. Our approach yields codes for a wide range of code rates and more importantly, codes whose minimum pseudocodeword weights equal their ...

The changes in the male voice in relation to the biological characteristics of puberty were assessed longitudinally in 26 boys. Speaking and singing fundamental frequencies were analysed in relation to the Tanner staging of puberty, saliva testosterone levels, and the Cooksey classification of voice analysis. There were abrupt changes in voice characteristics between Tanner stages G3 and G4 and...

Methods All consecutive JIA patients aged 10-24 years were asked to participate in this observational follow-up study. Demographic and disease related items were obtained yearly as well as Tanner puberty stages: Pubic Hair Girls (PHG), Breast stage (Bre), Menarche (Men), Pubic Hair Boys (PHB), Genital Stage (Gen). Reference Values were obtained from the Dutch National Growth Study. Median age a...

We consider a class of nonlinear mappings FA,N in R N indexed by symmetric random matrices A ∈ R with independent entries. Within spin glass theory, special cases of these mappings correspond to iterating the TAP equations and were studied by Erwin Bolthausen. Within information theory, they are known as ‘approximate message passing’ algorithms. We study the high-dimensional (large N) behavior ...

It is speculated that the most probable channel noise realizations (instantons) that cause the iterative decoding of lowdensity parity-check codes to fail make the decoding not to converge. A simple example is given of an instanton that is not a pseudo-codeword and causes iterative decoding to cycle. A method of finding the instantons for large number of iterations is presented and tested on Ta...

and Applied Analysis 3 One can see that boundary equilibrium E 2 , if exists, is an unstable hyperbolic node. The Jacobian matrix of system (4) at E 3 is

A high-speed 64-bit binary comparator is proposed in this brief. Comparison is most basic arithmetic operation that determines if one number is greater than, equal to, or less than the other number. Comparator is most fundamental component that performs comparison operation. This brief presents comparison of modified and existing 64-bit binary comparator designs concentrating on delay. Means so...

Transdermal delivery is one of the non-invasive methods for drug administration. Patient compliance is improved and continuous, sustained release of drug is achieved by following the application of transdermal formulation on the skin (Guy 1996; Tanner & Marks 2008). Transdermal drug delivery systems, known as patches, are dosage forms designed to deliver a therapeutically effective amount of dr...

This paper reviews recent results on the geometry of Gabor systems in finite dimensions. For example, we discuss the coherence of Gabor systems, the linear independence of subsets of Gabor systems, and the condition number of matrices formed by a small number of vectors from a Gabor system. We state a result on the recovery of signals that have a sparse representation in certain Gabor systems. ...