There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

https://caltcm.memberclicks.net/assets/documents/acc_aha_chf_2013_guidelines.pdf

2013 ACCF/AHA Guideline for the Management of Heart Failure: A Report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines

The lion's share of bacteria in various environments cannot be cloned in the laboratory and thus cannot be sequenced using existing technologies. A major goal of single-cell genomics is to complement gene-centric metagenomic data with whole-genome assemblies of uncultivated organisms. Assembly of single-cell data is challenging because of highly non-uniform read coverage as well as elevated levels of sequencing errors and chimeric reads. We describe SPAdes, a new assembler for both single-cell and standard (multicell) assembly, and demonstrate that it improves on the recently released E+V-SC assembler (specialized for single-cell data) and on popular assemblers Velvet and SoapDeNovo (for multicell data). SPAdes generates single-cell assemblies, providing information about genomes of uncultivatable bacteria that vastly exceeds what may be obtained via traditional metagenomics studies. SPAdes is available online ( http://bioinf.spbau.ru/spades ). It is distributed as open source software.

SPAdes, a new genome assembly algorithm and its applications to single-cell sequencing ( 7th Annual SFAF Meeting, 2012)

Soil Chemical Analysis

Statistics for Spatial Data.

A new framework for extending monochrome barcodes to color which offers higher data rates is described. In one embodiment of the present invention, the framework encodes independent data in each of the cyan, magenta, and yellow print colorant channels commonly used in color printing and decodes the data from each of the complementary red, green, and blue channels in capture color channels. The framework effectively increases the capacity of monochrome barcodes by a factor of three. In another embodiment of the present invention, a physical model based approach mitigates the effect of cross-channel interference among the print-colorant channels and capture color channels. In another embodiment of the invention, a pilot block methodology is used to estimate the model parameters and enable cross-channel interference cancellation. In another embodiment of the invention, an expectation maximization (EM)-type methodology estimates the model parameters and enables cross-channel interference cancellation.

Color Barcodes for Mobile Applications: A Per Channel Framework

In this paper, we investigate the use of limited infrastructure, in the form of wires, for improving the energy efficiency of a wireless sensor network. We call such a sensor network - a wireless sensor network with a limited infrastructural support - a hybrid sensor network. The wires act as short cuts to bring down the average hop count of the network, resulting in a reduced energy dissipation per node. Our results indicate that adding a few wires to a wireless sensor network can not only reduce the average energy expenditure per sensor node, but also the non-uniformity in the energy expenditure across the sensor nodes.

A case for hybrid sensor networks

A set theoretic approach for the spectral characterization of a color scanner is described These devices usually employ three channels to obtain a device dependent RGB (red, green, blue) im- age To display/print an image, the device dependent RGB values must be correctly transformed to the color space of the target de- vice To determine accurate and efficient transformations for a num- ber of devices, knowledge of the spectral sensitivity of the scanner is essential Direct measurement of the sensitivity requires a set of expensive narrow band reflectances and is often infeasible Meth- ods that estimate the spectral sensitivity based on measurements with typical reflectance samples are therefore of interest Due to the low dimensionality of the space of object reflectance spectra, this is a highly ill-conditioned problem As a result, conventional estimation techniques that fail to take a priori knowledge into account perform rather poorly on this problem A set theoretic approach that incorpo- rates available a priori knowledge into the estimation framework yields better results Results are presented for a simulated scanner characterization problem and for an actual characterization to dem- onstrate the increased accuracy compared with conventional methods © 1996 SPIE and IS&T

/pdf/set-theoretic-estimation-in-color-scanner-characterization-3d1kvyfx3o.pdf

Set theoretic estimation in color scanner characterization

In this paper, we study the problem of utility maximization in multi-hop wireless systems. To study the effect of wireless interference constraints on the utility maximization problem, we introduce a new class of weighted matching problems, namely maximum weighted K-valid matching problems (MWKVMPs). For K = 1, MWKVMP corresponds to the well studied maximum weighted matching problem (MWMP) in the literature, which can be solved in polynomial time. We prove several interesting results concerning the hardness of these problems for K /spl ges/ 2. In particular, we show that MWKVMP does not even belong to APX; where APX denotes the class of problems to which a constant factor approximation can be obtained in polynomial time. Our results have strong implications concerning the hardness of scheduling transmissions in multi-hop wireless systems.

Gaurav Sharma

Papers

Color Barcodes for Mobile Applications: A Per Channel Framework

A case for hybrid sensor networks

Set theoretic estimation in color scanner characterization

Maximum weighted matching with interference constraints

Liquid phase synthesis of pectin–cadmium sulfide nanocomposite and its photocatalytic and antibacterial activity