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Posts Tagged ‘SIAM Journals’

Supplementary Materials for SIAM journals

SIAM journals have entered a new era and are now considering unrefereed supplementary materials for publication along with the author’s manuscript. The first journals to seize the opportunity, SIAM Journal on Matrix Analysis and Applications, SIAM Journal on Scientific Computing and SIAM Review, began taking submissions with accompanying supplemental files in January.  SIAM Journal on Mathematical Analysis is next in line, with other journals expected to follow.

Prior to this new initiative, SIAM Journal on Applied Dynamical Systems and SIAM Journal on Imaging Sciences did review refereed supplemental content. SIAM journals that consider supplemental content for publication under the new policy will treat it on an unrefereed basis.

Supplementary materials must be submitted at the same time the article is first submitted. They might include additional figures or examples, animations, data sets used in the paper, computer code used to generate figures or tables, or other materials that are necessary to fully document the research contained in the paper or to facilitate the readers’ ability to understand and extend the work.

Supplementary materials, though not refereed, will be available to referees. The referees will be asked to give the materials at least a cursory look and verify that they are appropriate to accompany the paper. The referees or editor may suggest changes.

If published, they will be linked from the main article webpage and will be clearly marked as unrefereed supplementary materials associated with a particular paper.

 

A math-based model for deep-water oil drilling

Oil well control is one of the most important processes during drilling operations. In deepwater drilling, controlling pressure in the oil well is crucial, as excessive pressures in the drilled hole can result in blowouts, leading to disastrous events like the 2010 Gulf of Mexico Oil Spill.

The deeper the well, the higher the pressure, and the higher the risks associated with tapping oil from wells. During drilling, when the pressure applied to balance the hydrocarbon pressure in a well is not great enough to overcome that exerted by gas and fluids in the rock formation drilled, water, gas, oil, or other formation fluid can enter the hole. This is called a “gas kick,” which in worst-case scenarios can lead to blowouts.

In a paper published earlier this month in the SIAM Journal on Mathematical Analysis, author Steinar Evje presents new analysis of a mathematical model that has applications to the study of such gas kicks in deep-water oil wells. Read the rest of this entry »

SIAM Journal on Imaging Sciences paper selected as New Hot Paper

Highly-cited research on algorithms for medical imaging, intelligence surveillance and data mining

According to Thomson Reuters Essential Science Indicators, the article, “The Split Bregman Method for L1-Regularized Problems” published in SIAM Journal on Imaging Sciences is a “New Hot Paper” in the field of computer science. The paper, which appears in Volume 2 (2), pp 323-343, 2009, of the journal highlights cutting-edge numerical algorithms for the solution of problems related to recovery and restoration of signals, images, and video from meager data.

This designation means that the paper is one of the most highly-cited articles in this discipline published over the last two years. Authors Tom Goldstein and Stanley Osher attribute the high citation of their research to the simplicity and speed of the algorithms they propose as well as its wide-ranging potential applications. “[The paper] gives state-of-the-art, fast, simple, and versatile numerical algorithms for solving a class of problems of great practical and theoretical significance,” the authors said in an e-mail.

The research has relevance in various areas such as medical imaging, intelligence surveillance, statistics, and data mining. “This is a method which is useful in predicting what movies Netflix customers might prefer, finding objects on the ground from satellite observations, enabling patients to spend less time in MRI machines, reducing radiation exposure from CT scans, allowing doctors to track needles in ultrasound machines, and more,” the authors wrote.

New challenges and future directions include figuring out ways to further speed up methods based on these algorithms, optimizing geometries, enabling imaging capabilities through turbulence, and enhancing filtering methods for dynamical systems.

Goldstein is a postdoctoral research fellow in the Department of Electrical Engineering at Stanford University and Osher is a professor of mathematics, computer science, and electrical engineering at the University of California at Los Angeles.

“Hot papers” are papers published within the previous two years that receive an unusually high number of citations in the latest two-month period, according to data from Thomson Reuters Essential Science Indicators.

Access the complete paper here.

Mathematically ranking ranking methods

In a world where everything from placement in a Google search result to World Cup eligibility depends on ranking and numerical ratings of some kind, it is becoming increasingly important to analyze the algorithms and techniques that underlie such ranking methods in order to ensure fairness, eliminate bias, and tailor them to specific applications.

In a paper published this month in the SIAM Journal on Scientific Computing, authors Timothy Chartier, Erich Kreutzer, Amy Langville, and Kathryn Pedings mathematically analyze three commonly-used ranking methods.  “We studied the sensitivity and stability of three popular ranking methods: PageRank, which is the method Google has used to rank web pages, and the Colley and Massey methods, which have been used by the Bowl Championship Series to rank U.S. college football teams,” explains Langville. Read the rest of this entry »

Migratory Birds, domestic poultry and avian influenza

The persistence and recurrence of H5N1 avian influenza in endemic regions can largely be blamed on movement and infection by migratory birds. Trade in poultry, poultry products and caged birds, and movement of wild birds also account for H5N1 prevalence in these areas. Several recent outbreaks of avian influenza have suggested strong evidence of migratory birds playing a role in transmitting the virus over long distances.

In a paper published last week in the SIAM Journal on Applied Mathematics, authors Lydia Bourouiba, Stephen A. Gourley, Rongsong Liu, and Jianhong Wu analyze the interaction between non-migratory poultry and migratory birds in order to investigate the role of the latter in the spread of H5N1. Read the rest of this entry »

SIAM Journal upgrades improve discoverability

SIAM Journals have migrated to Scitation’s next-generation C3 platform. Visit the new epubs link here.

C3’s improved functionality allows users to work with journal data in new ways, vastly improving discovery, search and reading time. It provides ease of connecting similar concepts, and hence, reveals related content without user interaction. Each article abstract allows users to browse articles related to it by keyword or classification code, saving them the trouble of devising searches to accomplish the same goal.

To further facilitate fast discoverability, users can create “smart ToCs,” enabling them to tailor search listings to their own interests, harvest citations, hide irrelevant content, and preview abstracts with the click of a mouse. Greater utility has been added to the search functions with more options and better controls to refine returned content. Read the rest of this entry »

New editors-in-chief for SIAM Journals

SIAM is pleased to announce that new editors-in-chief are at the helm of three journals.

Professor Jorge Nocedal is the new Editor-in-Chief of the SIAM Journal on Optimization (SIOPT). A professor in the Department of Electrical Engineering and Computer Science at Northwestern University, his research interest is in the intersection of computer science, operations research and applied mathematics.

Dr. Nocedal’s research work emphasizes applications of optimization and scientific computing in the physical sciences, computer-aided design, financial engineering and machine learning, aligning closely with the editorial focus of the journal. A highly cited researcher, Dr. Nocedal and his group have developed algorithms and software that are used extensively in science and business. His depth of knowledge and experience in the field will be a great asset to SIOPT. Read the rest of this entry »

A mathematical model for moving bottlenecks in road traffic

Serious traffic gridlocks, like the jam on Beijing’s national expressway a few months ago which brought vehicles to a halt for days, are a real-world issue needing attention. Unfortunately, such standstills are not uncommon in Beijing, or in other cities around the world.

Such incidents motivate the analysis of traffic to minimize similar events and provide insight into road design and construction, such as where to install traffic lights and toll booths, how many lanes to build, and where to construct an overpass or a tunnel. The goals of these analyses are to relieve congestion in high traffic areas, reduce the risk of accidents, and manage safety and security of motorists. Read the rest of this entry »

A Mathematical Model for Ischemic Wound Healing

Certain complications can slow or prevent the process of wound healing. Ischemia, which is the abnormally low supply of oxygen to tissue caused by poor blood flow, can occur in wounded tissue, and cause poor healing. Ischemia of wound tissue often occurs in patients with vascular disease, diabetes, or prolonged immobilization. In a paper published this week in the SIAM Journal on Mathematical Analysis, Avner Friedman, Bei Hu, and Chuan Xue use a mathematical model to investigate ischemic dermal wound healing.

Wound healing is the process by which an organ or part of the human body repairs and heals itself after injury. The body’s response to an injury is almost instantaneous: a cascade of interrelated biological events is set in motion, first containing and then repairing the wound. These events involve biochemical interactions among blood cells, chemical mediators, and the extracellular matrix in blood tissue. Read the rest of this entry »

Mathematical Models for Breast Cancer Detection with Microwave Tomography

The most popular method of breast cancer detection today is X-ray mammography, which takes images of a compressed breast by low-dose ionizing radiation. However, there are several disadvantages to using X-rays for breast cancer screening, chief among them being the invasivity of radiation and the high costs, which limit their wide use and can deter women from getting them. In addition, depending on the age of the patient and tissue density, X-ray mammograms often result in false positives and negatives.

Microwave tomography can provide a cheaper and less risky alternative to X-ray mammography. In a paper published today in the SIAM Journal on Applied Mathematics, the authors describe a mathematical model for imaging tumors in the breast using microwave tomography. Read the rest of this entry »