This dissertation seeks to describe advancements made in computational methods for multi-messenger astrophysics (MMA) using gravitational waves GW and neutrinos during Advanced LIGO (aLIGO)’s first through third obse...
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This dissertation seeks to describe advancements made in computational methods for multi-messenger astrophysics (MMA) using gravitational waves GW and neutrinos during Advanced LIGO (aLIGO)’s first through third observing runs (O1-O3) and, looking forward, to describe novel computational techniques suited to the challenges of both the burgeoning MMA field and high-performance computing as a whole. The first two chapters provide an overview of MMA as it pertains to gravitational wave/high energy neutrino (GWHEN) searches, including a summary of expected astrophysical sources as well as GW, neutrino, and gamma-ray detectors used in their detection. These are followed in the third chapter by an in-depth discussion of LIGO’s timing system, particularly the diagnostic subsystem, describing both its role in MMA searches and the author’s contributions to the system itself. The fourth chapter provides a detailed description of the Low-Latency Algorithm for Multi-messenger Astrophysics (LLAMA), the GWHEN pipeline developed by the author and used in O2 and O3. Relevant past multi-messenger searches are described first, followed by the O2 and O3 analysis methods, the pipeline’s performance, scientific results, and finally, an in-depth account of the library’s structure and functionality. In particular, the author’s high-performance multi-order coordinates (MOC) HEALPix image analysis library, HPMOC, is described. HPMOC increases performance of HEALPix image manipulations by several orders of magnitude vs. naive single-resolution approaches while presenting a simple high-level interface and should prove useful for diverse future MMA searches. The performance improvements it provides for LLAMA are also covered. The final chapter of this dissertation builds on the approaches taken in developing HPMOC, presenting several novel methods for efficiently storing and analyzing large data sets, with applications to MMA and other data-intensive fields. A family of depth-first multi-resol
Collection of selected, peer reviewed papers from the international conference on computational methods in applied sciences (cmas 2014), december 17-18, 2014, krak體, poland. The 18 papers are grouped as follows: i. C...
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ISBN:
(数字)9783038267638
ISBN:
(纸本)9783038353782
Collection of selected, peer reviewed papers from the international conference on computational methods in applied sciences (cmas 2014), december 17-18, 2014, krak體, poland. The 18 papers are grouped as follows: i. computational science as a key element of engineering progress; ii. computational methods and its application; iii. Applied mechanics and terotechnology; iv. Biotechnology applications.
I present an overview of my research which investigates how models of human behavior can inform the design of new algorithms and interfaces. Specifically, I show how precise, testable computational methods and behavio...
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From the observation that possible values of parameters involved in objective functions and constraints of mathematical programming problems are often only imprecisely or ambiguously known to experts, in this paper we...
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From the observation that possible values of parameters involved in objective functions and constraints of mathematical programming problems are often only imprecisely or ambiguously known to experts, in this paper we consider two-level 0-1 programming problems with fuzzy parameters represented by fuzzy numbers. Using genetic algorithms, we present a computational method for obtaining Stackelberg solutions to the two-level 0-1 programming problem with fuzzy parameters. To demonstrate feasibility of the method, computational experiments are carried out.
The focus is that Excel/VBA provides a useful platform for engineering calculations in energy engineering. It includes computational methods in the simulation and solution of engineering problems that may or may not h...
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Printed documents continue to be the most commonly used media for information transfer in official context. However, such documents may be subject to illegitimate modification or malicious purposes. Therefore, agencie...
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This lecture can be viewed as a complement to my lecture [18] given in Berkeley. It begins with a short survey of the known rationality criteria for Galois extensions over ℂ(t1,..,ts) or, equivalently, for Galois cove...
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The urgent demand in miRNA research has call for the high performance computational methods for mature miRNA identification to supplement the biological experiment methods. In this study, we analyzed the secondary str...
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computational methods for the inverse problem of detecting the source of acoustical noise in an interior region from pressure measurements in the nearfield are discussed. The methods are based on a single layer potent...
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This paper presents a short review of the current status of the field of deterministic computational methods for the solution of the neutron transport equation for reactor physics applications. Some recent development...
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ISBN:
(纸本)9781617821219
This paper presents a short review of the current status of the field of deterministic computational methods for the solution of the neutron transport equation for reactor physics applications. Some recent developments are briefly illustrated pointing out at their potential for applications. Innovative and new nuclear systems are proposed and studied for a more sustainable development of the nuclear technology for energy production. The needs and challenges for adequate computational methods posed by these developments are also briefly illustrated and discussed.
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