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  • 2020-2024  (14)
  • 2015-2019  (1,056)
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  • 1
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    Progress in Commutative Algebra 1. Combinatorics and Homology (2021)
    De Gruyter
    Details
    Publication Date: 2023-12-20
    Description: This is the first of two volumes of a state-of-the-art survey article collection which originates from three commutative algebra sessions at the 2009 Fall Southeastern American Mathematical Society Meeting at Florida Atlantic University. The articles reach into diverse areas of commutative algebra and build a bridge between Noetherian and non-Noetherian commutative algebra. These volumes present current trends in two of the most active areas of commutative algebra: non-noetherian rings (factorization, ideal theory, integrality), and noetherian rings (the local theory, graded situation, and interactions with combinatorics and geometry). This volume contains combinatorial and homological surveys. The combinatorial papers document some of the increasing focus in commutative algebra recently on the interaction between algebra and combinatorics. Specifically, one can use combinatorial techniques to investigate resolutions and other algebraic structures as with the papers of Fløystad on Boij-Söderburg theory, of Geramita, Harbourne and Migliore, and of Cooper on Hilbert functions, of Clark on minimal poset resolutions and of Mermin on simplicial resolutions. One can also utilize algebraic invariants to understand combinatorial structures like graphs, hypergraphs, and simplicial complexes such as in the paper of Morey and Villarreal on edge ideals. Homological techniques have become indispensable tools for the study of noetherian rings. These ideas have yielded amazing levels of interaction with other fields like algebraic topology (via differential graded techniques as well as the foundations of homological algebra), analysis (via the study of D-modules), and combinatorics (as described in the previous paragraph). The homological art
    Keywords: QA1-939 ; Commutative Algebra ; Homology ; Combinatorics ; bic Book Industry Communication::P Mathematics & science
    Language: English
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  • 2
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    Progress in Commutative Algebra 2. Closures, Finiteness and Factorization (2021)
    De Gruyter
    Details
    Publication Date: 2023-12-20
    Description: This is the second of two volumes of a state-of-the-art survey article collection which originates from three commutative algebra sessions at the 2009 Fall Southeastern American Mathematical Society Meeting at Florida Atlantic University. The articles reach into diverse areas of commutative algebra and build a bridge between Noetherian and non-Noetherian commutative algebra. These volumes present current trends in two of the most active areas of commutative algebra: non-noetherian rings (factorization, ideal theory, integrality), and noetherian rings (the local theory, graded situation, and interactions with combinatorics and geometry). This volume contains surveys on aspects of closure operations, finiteness conditions and factorization. Closure operations on ideals and modules are a bridge between noetherian and nonnoetherian commutative algebra. It contains a nice guide to closure operations by Epstein, but also contains an article on test ideals by Schwede and Tucker and one by Enescu which discusses the action of the Frobenius on finite dimensional vector spaces both of which are related to tight closure. Finiteness properties of rings and modules or the lack of them come up in all aspects of commutative algebra. However, in the study of non-noetherian rings it is much easier to find a ring having a finite number of prime ideals. The editors have included papers by Boynton and Sather-Wagstaff and by Watkins that discuss the relationship of rings with finite Krull dimension and their finite extensions. Finiteness properties in commutative group rings are discussed in Glaz and Schwarz's paper. And Olberding's selection presents us with constructions that produce rings whose integral closure in their field of fractions is not finitely
    Keywords: QA1-939 ; Closure ; Commutative Algebra ; Decomposition ; Factorization ; bic Book Industry Communication::P Mathematics & science
    Language: English
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  • 3
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    Multi-messenger Observations of a Binary Neutron Star Merger (2017)
    Institute of Physics
    Details
    Publication Date: 2017-10-16
    Print ISSN: 2041-8205
    Electronic ISSN: 2041-8213
    Topics: Physics
    Published by Institute of Physics
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  • 4
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    CMPD: cancer mutant proteome database (2015)
    Oxford University Press
    Details
    Publication Date: 2015-01-16
    Description: Whole-exome sequencing, which centres on the protein coding regions of disease/cancer associated genes, represents the most cost-effective method to-date for deciphering the association between genetic alterations and diseases. Large-scale whole exome/genome sequencing projects have been launched by various institutions, such as NCI, Broad Institute and TCGA, to provide a comprehensive catalogue of coding variants in diverse tissue samples and cell lines. Further functional and clinical interrogation of these sequence variations must rely on extensive cross-platforms integration of sequencing information and a proteome database that explicitly and comprehensively archives the corresponding mutated peptide sequences. While such data resource is a critical for the mass spectrometry-based proteomic analysis of exomic variants, no database is currently available for the collection of mutant protein sequences that correspond to recent large-scale genomic data. To address this issue and serve as bridge to integrate genomic and proteomics datasets, CMPD ( http://cgbc.cgu.edu.tw/cmpd ) collected over 2 millions genetic alterations, which not only facilitates the confirmation and examination of potential cancer biomarkers but also provides an invaluable resource for translational medicine research and opportunities to identify mutated proteins encoded by mutated genes.
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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  • 5
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    Earthquake Potential of Active Faults in Taiwan from GPS Observations and Block Modeling (2016)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2016-11-04
    Description: Taiwan is located at the boundary between the Philippine Sea plate and the passive continental margin of the Eurasian plate and is one of the most seismically active regions in the world. In an attempt to evaluate the seismogenic potential of active faults in Taiwan, we separated the region into 34 blocks with 27 known active faults as their boundaries and employed a 3D elastic block modeling method to invert the Global-Positioning-System-measured surface deformation for block rotations and the fault coupling. Additional constraints from an up-to-date dataset of geologic fault-slip rates were introduced to reconcile the discrepancy between the geodetically and geologically determined long-term slip rates. Our results show that the Hsinhua fault and the southern part of the Longitudinal Valley fault may be weakly coupled near the surface and therefore experience shallow creeping in the interseismic period. The slip-deficit rates, which relate to how fast the elastic strain is accumulated on faults, are relatively low (0.8–2.2 mm/yr) for faults in northern Taiwan compared with up to 4 mm/yr in the Western foothill of the central and southwestern Taiwan. Evaluations of earthquake potential based on our new modeling results indicate that the frontal thrust and the westernmost branch faults of central Taiwan and the northern Longitudinal Valley fault of eastern Taiwan are capable of generating M w  6.0–7.3 earthquakes in the next few decades.
    Print ISSN: 0895-0695
    Electronic ISSN: 1938-2057
    Topics: Geosciences
    Published by Seismological Society of America (SSA)
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  • 6
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    An assessment of the Arctic Ocean in a suite of interannual CORE-II simulations. Part II: Liquid freshwater (2016)
    In:  EPIC3Ocean Modelling, 99, pp. 86-109
    Details
    Publication Date: 2018-06-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 7
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    An assessment of the Arctic Ocean in a suite of interannual CORE-II simulations. Part I: Sea ice and solid freshwater (2016)
    In:  EPIC3Ocean Modelling, 99, pp. 110-132
    Details
    Publication Date: 2018-06-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 8
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    The Angular Size of Coronal Mass Ejections: STEREO Measurements and Consequences for Future Missions (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-07-10
    Description: Coronal mass ejections are observed remotely by coronagraphs with angular widths, for the "flux rope", of 60-90 deg. Past studies from single events measured by two spacecraft at the same heliocentric distance or statistical studies of events measured by two spacecraft at different distances have revealed that the angular width of CME magnetic ejecta may be 40-60 deg near 1 AU. Here, we present a more in-depth analysis of CME measurements by STEREO-A and Wind in 2020-2022 when the two spacecraft separation decreased from 60 to 20 deg. We find that multi-spacecraft measurements are rare, even for two spacecraft at 1 AU separated by 25-30 deg. We discuss how this affects future mission concepts and how it reveals that dedicated multi-spacecraft missions with spacecraft separations of 20 degrees or less are needed to advance our understanding of CMEs.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 9
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    Long Time Series of Microstructure Measurements from Autonomous Platforms (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-07-11
    Description: Oceanic turbulence is highly episodic and patchy. The persistence and long endurance of autonomous platforms provides opportunities to sample across a range of conditions and environments, and to provide access to challenging environments where ship-based measurements are often impossible.For more than a decade, a fully integrated microstructure system on Seaglider has been developed and operated by the Applied Physical Laboratory at University of Washington, using probes and analog signal conditioning boards from Rockland Scientific Inc. This compact, low-power system has minimal impact on flight and endurance of the autonomous glider, making it possible to collect extended (many months) dissipation measurements. The hardware and processing system are commercially available from Rockland Scientific as MAPLe. Microstructure measurements have been acquired over spans as long as six months, but probe failures often occur. We describe the system and present statistics for sensor durability statistics computed from deployments over a vast range of conditions and geographical locations. The field data are compared to results of probe sensitivity in long term laboratory tests.
    Language: English
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  • 10
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    Height modernization in hydrographic surveying using unmanned surface vehicle with multibeam sonar system (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-06-06
    Description: Height modernization in hydrographic surveying refers to measuring the depth with reference to the ellipsoid, which has two major advantages. Firstly, it is tide-independent, eliminating the errors that may result from tidal correction. Secondly, bathymetric results from different countries or regions can reference to a common surface, i.e., the WGS84 Ellipsoid. In this research, we will integrate Global Navigation Satellite System (GNSS) and Inertial Navigation System (INS) using both loosely and tightly coupled schemes to improve the attitude and positioning accuracy, especially in the vertical direction. The improved attitude data can be used for vessel attitude corrections, while the sound velocity must be corrected based on the records from the sound velocity profiler (SVP). By combining the positioning results, the vertical offsets between the GNSS antenna and the multibeam echosounder, and the processed hydrographic measurements, the ellipsoidal height of the seabed can be obtained. In this study, hydrographic surveying is conducted using an unmanned surface vehicle (USV) equipped with a multibeam sonar sounder in several harbors, including An-ping, Jiang-jun, and Wu-shi, in Taiwan. The USV’s light weight, shallow draft, and high maneuverability make it ideal for navigating shallow waters and berthing areas that may be inaccessible to manned vessels. The collected hydrographic data will be processed using both the proposed method and CARIS HIPS and SIPS software, which takes GPS tide into account and the results from both methods will be compared to evaluate the effectiveness of height modernization in hydrographic surveying.
    Language: English
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