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  • 1
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    Active Control of Nonlinear Suspension System Using Modified Adaptive Supertwisting Controller (2015)
    Hindawi
    Details
    Publication Date: 2015-07-15
    Description: The suspension system is faced with nonlinearities from the spring, damper, and external excitations from the road surface. The objective of any control action provided to the suspension is to improve ride comfort while ensuring road holding for the vehicle. In this work, a robust higher order sliding mode algorithm combining the merits of the modified supertwisting algorithm and the adaptive supertwisting algorithm has been proposed for the nonlinear active suspension system. The proposed controller is robust to linearly growing perturbations and bounded uncertainties. Simulations have been performed for different classes of road excitations and the results are presented.
    Print ISSN: 1026-0226
    Electronic ISSN: 1607-887X
    Topics: Mathematics
    Published by Hindawi
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  • 2
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    Effect of Fractures on Seismic Amplitudes from Explosions (2013)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2013-02-07
    Description: Improved understanding of the seismic radiation generated by explosions in low coupling (damaged/fractured) media is extremely important for nuclear monitoring, as source coupling affects both detection and yield estimation. Some empirical evidence for seismic amplitude reductions have been noted for nuclear and chemical explosions detonated in fractured media (e.g., Sokolova, 2008 ). In order to define the physical mechanism responsible for the amplitude reduction and quantify the degree of the amplitude reduction in fractured rocks, we conducted Phase I of a multi-phase explosion experiment in central New Hampshire. The experiment involved conducting explosions of various yields, including a 46.3-kg explosion in the damage/fracture zone of a 231.8-kg explosion and a 46.8-kg shot in nearby undamaged rock. Our analysis confirms a seismic amplitude reduction in damaged rock by a factor of 2–3. The amplitude differences are frequency dependent, with the explosion in the undamaged rock having a higher corner frequency than the explosion in the damaged zone. The overshoot parameter for the virgin/undamaged rock shots is higher than that for the damaged rock shot. We found that the corner frequency correlates with the overshoot parameter, and only weakly correlates with the yield. Additional experiments will be conducted in the near future to further quantify seismic-wave characteristics as a function of the depth of burial, type of explosives, and other factors. Online Material: Movies of explosions.
    Print ISSN: 0037-1106
    Electronic ISSN: 1943-3573
    Topics: Geosciences , Physics
    Published by Seismological Society of America (SSA)
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  • 3
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    Biological weapons, war crimes, and WWI (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rath, Johannes -- New York, N.Y. -- Science. 2002 May 17;296(5571):1235-7; author reply 1235-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12025829" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Warfare/*legislation & jurisprudence ; *International Cooperation ; Jurisprudence ; *War Crimes
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Socioeconomic biological weapons (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rath, J -- Burgel, J L -- New York, N.Y. -- Science. 2001 Jul 20;293(5529):425-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11464844" target="_blank"〉PubMed〈/a〉
    Keywords: *Agriculture ; Animals ; Aphthovirus ; *Biological Warfare ; *Economics ; Humans ; *International Cooperation ; Socioeconomic Factors ; United Nations
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Biological weapons control (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rath, J -- Jank, B -- Doblhoff-Dier, O -- New York, N.Y. -- Science. 1998 Dec 18;282(5397):2194.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9890824" target="_blank"〉PubMed〈/a〉
    Keywords: *Biological Products ; Biological Warfare/*prevention & control ; *Biotechnology ; *Drug Industry ; International Cooperation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    European dual-use procedures (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-06-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rath, Johannes -- New York, N.Y. -- Science. 2012 Jun 8;336(6086):1231. doi: 10.1126/science.336.6086.1231-a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22679081" target="_blank"〉PubMed〈/a〉
    Keywords: Biomedical Research/*legislation & jurisprudence ; *Government Regulation ; *Public Policy ; *Research Support as Topic ; *Security Measures
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Mutant flu: assessing biosecurity risks (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rath, Johannes -- England -- Nature. 2012 Feb 22;482(7386):470. doi: 10.1038/482470b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22358821" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bioterrorism/*prevention & control ; Civil Defense/*methods ; Humans ; *Influenza A Virus, H5N1 Subtype
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 8
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    Conservation: Former Iron Curtain safeguards wildlife (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-05-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jank, Bernhard -- Rath, Johannes -- England -- Nature. 2014 May 1;509(7498):33. doi: 10.1038/509033d.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24784206" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Wild/*physiology ; Conservation of Natural Resources/*legislation & jurisprudence ; *International Cooperation ; *Politics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 9
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    A New Experimental Field Study of the Effects of Explosive Detonation Products on Seismic Radiation (2017)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2017-08-26
    Description: Weston Geophysical Corp. conducted a series of chemical explosions using various explosives with different properties to investigate their effect on seismic signatures. Previous experimental data from the New England Damage Experiment (e.g., Martin et al. , 2012 ) suggest that low-frequency P -wave amplitudes are affected by the explosive velocity of detonation and by the thermodynamic characteristics of gaseous explosive products ( Stroujkova, 2015 ). The new experiment conducted in New Hampshire in 2016 was designed to isolate the effects of the amount of the explosive gases using aluminized and nonaluminized explosive pairs. The explosions were recorded using a network of seismometers and accelerometers fielded from near-source to local distances. Seismic data from this experiment provide ground-truth data that may be useful for future comparative studies of yield, based on seismic-waveform analysis.
    Print ISSN: 0895-0695
    Electronic ISSN: 1938-2057
    Topics: Geosciences
    Published by Seismological Society of America (SSA)
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  • 10
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    Salinity trends in Suisun Bay and the western Delta: October 1921 - September 2012 (2021)
    Tetra Tech, Inc. | Lafayette, CA
    In:  sujoy.roy@tetratech.com | http://aquaticcommons.org/id/eprint/20754 | 17795 | 2016-06-14 20:01:33 | 20754 | Tetra Tech, Inc.
    Details
    Publication Date: 2021-07-12
    Description: Prepared for San Luis and Delta Mendota Water Authority (Los Banos, CA) and State Water Contractors (Sacramento, CA).
    Keywords: Agriculture ; Engineering ; Environment ; Management ; California ; Sacramento River ; San Joaquin River ; San Francisco Bay
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 229
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