Tag: "algorithm" at biology news

Envisat captures first image of Sargassum from space

...ng data from MERIS with a sophisticated processing algorithm and powerful Grid computing to broaden this new view. The basic principle behind Grid computing is that anything one computer can do, a pool of computers can do faster and better, enabling the solution of massively complex tasks beyond the capabiliti...

Mimicking how the brain recognizes street scenes

...detecting cars. In the biological model, the same algorithm can learn to detect widely different types of objects. To test the model, the team presented full street scenes consisting of previously unseen examples from the Street Scene Database. The model scanned the scene and, based on its supervised train...

Vaccine to cope with viral diversity in HIV

...cine. David Nickle et al present here an efficient algorithm to develop vaccines that cope with the diversity of HIV or other variable pathogens. This computational method clarifies and analyzes the variation found in the strains of the virus by describing the molecules which stimulate the immune response to ...

Virginia Tech's System X supercomputer provides super tool for simulation of cell division

...mbined the results. "A deterministic global search algorithm systematically explores the parameter space, findi... good values," Watson said. "Then the local search algorithm improves the values from the starting points found by the global algorithm." The parallel compute...

Powerful genome ID method extended to humans

...ecular and computational biology, has developed an algorithm to handle the massive amounts of data created by a...stdoctoral fellow at Stanford University, said the algorithm makes it possible to optically map the human genome. "It carries tremendous benefits for medical ...

Plague proteome reveals proteins linked to infection

...etical protein as one identified by a gene-finding algorithm that matches no other known protein sequence or contains no other evidence that it is an actual product of a gene. The study authors said the same approach is being applied to a search for biomarkers across a wide range of biological systems, from...

New technology used to construct the first map of structural variation in the human genome

...ome." The other paper presents a new multi-step algorithm used with the Affymetrix GeneChip® Human Mapping 5...it of alternative methodologies. Furthermore, the algorithm more accurately estimated CNV boundaries, thereby permitting a detailed comparison with other genomi...

Honey bee genome holds clues to social behavior

...ster) from a single cell to an adult. A computer algorithm written by the researchers scanned nearly 3,000 genes. Statistical techniques were then used to investigate whether particular transcription factors correlated with genes that were differentially expressed (turned on or off) between nurse bees and fo...

Scientists identify 36 genes, 100 neuropeptides in honey bee brains

...uences, some of the genes were found by a computer algorithm that scanned the honey bee genome for such telltale sequences. "We found 36 genes, from which we detected 100 peptides by mass spectrometry," said Sweedler, who also is a researcher at the university's Beckman Institute for Advanced Science and Tec...

NYU algorithm enhances ability to detect cancer genes

...tute of Mathematical Sciences have developed a new algorithm that enhances the ability to detect a cancer gene, and have applied their algorithm to map the set of tumor-suppressor genes involved in lung cancer. The algorithm uses data from Affym...

New GI technologies improve internal organ visualization

...ered propofol using the CAPS system and its dosing algorithm and safety shell--a control safeguard software program. Data was downloaded from the sedation device to a laptop computer to measure patient response throughout the procedure and adjust the sedation dosage accordingly. Patient responsiveness was mo...

Scientists discover a genetic code for organizing DNA within the nucleus

...by nucleosomes, and they then developed a computer algorithm to predict the encoded organization of nucleosomes along an entire chromosome. The team's findings provided insight into another mystery that has long been puzzling molecular biologists: How do cells direct transcription factors to their intended ...

In-home sensors spot dementia signs in elderly

... the bulk of our technology research is focused on algorithm development" and the ability to mine and manage the data these devices collect. Study co-author Misha Pavel, Ph.D., professor of biomedical engineering and computer science and electrical engineering at OHSU's OGI School of Science & Engineerin...

Scientists discover new genetic subtypes of common blood cancer

...se subtypes. A new computational tool based on an algorithm designed to recognize human faces plucked the four...r this deeper analysis, the researchers created an algorithm based on a recently developed computational method designed to recognize individuals by facial featu...

Biologists develop genome-wide map of miRNA-mRNA interactions

...ism to study how embryos develop. Using PicTar, an algorithm developed at NYU, the researchers predicted miRNA functions of C. elegans genes. The researchers found that one-third of C. elegans miRNAs target gene sets have related functions. That is, it appears that miRNAs can control groups of genes that work ...

Scientists force viruses to evolve as better delivery vehicles for gene therapy

...guessed those two," Schaffer said. "Using the same algorithm as nature came up with - evolution - to solve the problem, is the best way to do it." Since each generation takes about a month, Schaffer predicted that many types of new and improved strains could be created in a few months' time, and certainly in ...

Picking particles faster than one at a time

...inutes. Adiga and his colleagues tested the new algorithm by using it to pick images from among over 130,000... error rate, future refinement of the segmentation algorithm aims higher. By concentrating on the highest quality particles, crystallization in silico may need f...

Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool

...od combines a new experimental procedure and a new algorithm to identify gene activation captured by DNA microarray analysis with greater sensitivity and specificity. The work holds great promise for vastly improving research on health and disease, according to Ziv Bar-Joseph, assistant professor of computer s...

Phenotype is influenced by nature, nurture and noise

...sic noise and delays. Using the modified Gillespie algorithm and sophisticated mathematical analyses of sets of biochemical reactions, the team discovered how the combination of intrinsic noise and biochemical delays also generates oscillations in phenotype. "We think an analysis of such fine details of gene ...

Researchers quantify more noise in gene expression

... parameter that is needed to create a mathematical algorithm describing gene-expression variation in yeast. "This may sound relatively straightforward: extrinsic variability is due to individual cells growing out of phase with one another," said Hasty. "However, this study is the first rigorous description of...

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