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  • 1
    Unknown
    Energy Dissipation and Vibration Control : Modeling, Algorithm and Devices (2018)
    Basel, Beijing, Wuhan : MDPI
    Details
    Keywords: Impact ; Impact force modeling ; viscoelastic materials ; pounding ; vibration suppression ; energy dissipation ; damping ; tuned mass damper (TMD) ; pounding tuned mass damper (PTMD) ; active mass damper (AMD) ; impact damper ; frication damper ; particle damper ; tuned liquid damper ; tuned liquid column damper ; active vibration control ; passive vibration control ; vibration control devices ; vibration damper
    Description / Table of Contents: The study of vibrations and the control of vibrations has been a fundamental cornerstone of engineering. Problems related to vibrations are ubiquitous, from the study of fatigue of airplane wings in turbulent flow to the suppression of vibrations in subsea structures. The breadth of vibration engineering is matched by the depth of field. Numerous methods have been used to understand vibrations, and a wide range of devices have been developed to control vibrations. Many vibration control problems can be considered as a problem of energy dissipation and vibration damping. The problem encompasses multiple interdependent aspects of research and engineering, including the development of models, implementation of algorithms, and design of devices based on data. Discoveries made in one aspect can lead to breakthroughs in other aspects. Thus, the scope and aims of this Special Issue are to receive and accumulate new knowledge about vibration control, especially for topics related to energy dissipation methods for vibration damping. Desired topics include but are not limited to vibration modeling, algorithms for active vibration control, passive damping methods, vibration damping devices, new materials for energy dissipation, etc.
    Pages: Online-Ressource (VIII, 254 Seiten) , Illustrationen, Diagramme, Karten
    Edition: Printed Edition of the Special Issue Published in Applied Sciences
    ISBN: 9783038427865
    URL: http://www.mdpi.com/books/pdfview/book/598
    Language: English
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    E-BOOK
  • 2
    Electronic Resource
    Electronic Resource
    Interaction of Circular Lining and Interior Linear Crack by Incident SH-Wave (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 521-524 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper, the method of Green’s function is used to investigate the problem ofdynamic stress concentration of circular lining and interior linear crack impacted by incidentSH-wave. The train of thought for this problem is that: Firstly, a Green’s function is constructed forthe problem, which is a fundamental solution of displacement field for an elastic space possessing acircular lining while bearing out-of-plane harmonic line source force at any point in the lining. Interms of the solution of SH-wave’s scattering by an elastic space with a circular lining, anti-planestresses which are the same in quantity but opposite in direction to those mentioned before, areloaded at the region where the crack existent actually, we called this process “crack-division”.Finally, the expressions of the displacement and stress are given when the lining and the crack existat the same time. Then, by using the expressions, some example is provided to show the effect ofcrack on the dynamic stress concentration around circular lining
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.521.pdf
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Dynamic Stress Intensity Problem of SH-Wave by Double Linear Cracks near a Circular Hole (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 385-387 (July 2008), p. 105-108 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In mechanical engineering, circular hole is used widely in structure design. When thestructure is overloaded or the load is changed regularly, cracks emerge and spread. Based on theformer study of dynamic stress concentration problem of SH wave by a crack originating at acircular hole edge, in this paper, the method of Green’s function is used to investigate the problemof dynamic stress intensity problem of double linear cracks near a circular hole impacted byincident SH-wave. The train of thought for this problem is that: Firstly, a Green’s function isconstructed for the problem, which is a fundamental solution of displacement field for an elasticspace possessing a circular hole and a linear crack while bearing out-of-plane harmonic line sourceforce at any point; Secondly, in terms of the solution of SH-wave’s scattering by an elastic spacewith a circular hole and a linear crack, anti-plane stresses which are the same in quantity butopposite in direction to those mentioned before, are loaded at the region where the second crack isin existent actually, we called this process “crack-division”; Finally, the expressions of thedynamic stress intensity factor(DSIF) of the cracks are given when the circular hole and doublelinear crack exist at the same time. Then, by using the expressions, an example was provided toshow the effect of circular hole and cracks on the dynamic stress intensity factor of the cracks
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.385-387.105.pdf
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    Paper (German National Licenses)
    Fulltext
  • 4
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    Element analysis from sediment core ORI-891-16-P1 (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-02
    Description: The here presented data comprises the z-score normalised XRF data counts for the elements Si, K, Ti, Mn, Fe, Br, Rb, Sr and Zr from sediment core ORI-891-16-P1 (19° 33.36'N, 116° 6.77'E; 1595 m water depth). Data is provided against age.
    Keywords: AGE; Bromine, normalized; Calcium, normalized; Iron, normalized; Manganese, normalized; ORI-891-16-P1; PC; Piston corer; Potassium, normalized; Rubidium, normalized; Silicon, normalized; Strontium, normalized; Titanium, normalized; X-ray fluorescence (XRF); Zirconium, normalized
    Type: Dataset
    Format: text/tab-separated-values, 7310 data points
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    DATA PANGAEA
  • 5
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    ln-Titanium/Calcium ratio from sediment core ORI-891-16-P1 (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-02
    Description: The here presented data contains the ln(Ti/Ca) ratio against core depth (m) and age (kyr) from sediment core ORI-891-16-P1 (19° 33.36'N, 116° 6.77'E; 1595 m water depth). The XRF core scanning measurements were conducted at the National Taiwan University (NTU) using an Itrax Cox XRF core scanner. The measurements were conducted using a generator setting of 30 kV, a current of 50 mA and a count time of 5 s. To eliminate non-linear matrix effects and constant-sum constraints, we used logratios to account for a statistically more robust representation of element ratio. The ln(Ti/Ca) element ratio is considered a proxy for terrigenous input, with Ti being dominated by the presence of various heavy minerals e.g. ilmenite, perovskite, rutile and titanite. In contrast, Ca contents have been related to biogenic carbonate variability which is considered a background pelagic signal.
    Keywords: AGE; DEPTH, sediment/rock; East Asian summer monsoon; ln-Titanium/Calcium ratio; ORI-891-16-P1; PC; Piston corer; South China Sea; X-ray fluorescence (XRF); XRF data
    Type: Dataset
    Format: text/tab-separated-values, 731 data points
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    DATA PANGAEA
  • 6
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    Geochemical data from sediment core ORI-891-16-P1 (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-02
    Description: The here presented data comprises the dry bulk density in g/cc, the total organic content (TOC) in %, the total inorganic content (TIC) in %, the total carbon content (TC) in %, the calcium carbonate content (CaCO3) in %, the terrigenous influx rate in g kyr-1 cm-2 and the z-score normalised XRF data counts for the elements Si, K, Ti, Mn, Fe, Br, Rb, Sr and Zr from sediment core ORI-891-16-P1 (19° 33.36'N, 116° 6.77'E; 1595 m water depth). Data is provided against age.
    Keywords: ORI-891-16-P1; PC; Piston corer
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 7
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    Carbon content and terrestrial flux data from sediment core ORI-891-16-P1 (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-02
    Description: The here presented data comprises the dry bulk density in g/cc, the total organic content (TOC) in %, the total inorganic content (TIC) in %, the total carbon content (TC) in %, the calcium carbonate content (CaCO3) in %, the terrigenous influx rate in g kyr-1 cm-2 from sediment core ORI-891-16-P1 (19° 33.36'N, 116° 6.77'E; 1595 m water depth). Data is provided against age.
    Keywords: AGE; Calcium carbonate; Calculated; Carbon, inorganic, total; Carbon, organic, total; Carbon, total; Density, dry bulk; ORI-891-16-P1; PC; Piston corer; Terrigenous, flux
    Type: Dataset
    Format: text/tab-separated-values, 483 data points
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  • 8
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    Decadal hydroclimatic variability in the western coastal United States: temporal and spatial variations in precipitation, streamflow, and lake level (2021)
    In:  http://aquaticcommons.org/id/eprint/15829 | 8 | 2014-12-10 23:14:35 | 15829
    Details
    Publication Date: 2021-07-10
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):We have analyzed streamflow variations recorded at 15 USGS gauging stations in California during the past 90 years or so. The anomalies (departures from the 1960-1990 mean discharge) of streamflow on annual-to-decadal time scales are strongly correlated with precipitation anomalies in each drainage basin. ... Although causes of the decadal climate (precipitation) variability are not known with certainty, the use of streamflow records may help us understand the relative strengths of moisture sources and shift of the jet stream in atmospheric circulation.
    Keywords: Atmospheric Sciences ; Limnology ; PACLIM ; hydrology
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 79-91
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    PAPER (OA)
  • 9
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    The challenge of unprecedented floods and droughts in risk management (2022)
    In:  EPIC3Nature, 608(7921), pp. 80-86, ISSN: 0028-0836
    Details
    Publication Date: 2022-09-02
    Description: Risk management has reduced vulnerability to floods and droughts globally, yet their impacts are still increasing. An improved understanding of the causes of changing impacts is therefore needed, but has been hampered by a lack of empirical data. On the basis of a global dataset of 45 pairs of events that occurred within the same area, we show that risk management generally reduces the impacts of floods and droughts but faces difficulties in reducing the impacts of unprecedented events of a magnitude not previously experienced. If the second event was much more hazardous than the first, its impact was almost always higher. This is because management was not designed to deal with such extreme events: for example, they exceeded the design levels of levees and reservoirs. In two success stories, the impact of the second, more hazardous, event was lower, as a result of improved risk management governance and high investment in integrated management. The observed difficulty of managing unprecedented events is alarming, given that more extreme hydrological events are projected owing to climate change.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , NonPeerReviewed
    Format: application/pdf
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  • 10
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    Panta Rhei benchmark dataset: socio-hydrological data of paired events of floods and droughts (2023)
    Copernicus Publications
    In:  EPIC3Earth System Science Data, Copernicus Publications, 15(5), pp. 2009-2023, ISSN: 1866-3508
    Details
    Publication Date: 2024-04-22
    Description: As the adverse impacts of hydrological extremes increase in many regions of the world, a better understanding of the drivers of changes in risk and impacts is essential for effective flood and drought risk management and climate adaptation. However, there is currently a lack of comprehensive, empirical data about the processes, interactions, and feedbacks in complex human-water systems leading to flood and drought impacts. Here we present a benchmark dataset containing socio-hydrological data of paired events, i.e. two floods or two droughts that occurred in the same area. The 45 paired events occurred in 42 different study areas and cover a wide range of socio-economic and hydro-climatic conditions. The dataset is unique in covering both floods and droughts, in the number of cases assessed and in the quantity of socio-hydrological data. The benchmark dataset comprises (1) detailed review-style reports about the events and key processes between the two events of a pair; (2) the key data table containing variables that assess the indicators which characterize management shortcomings, hazard, exposure, vulnerability, and impacts of all events; and (3) a table of the indicators of change that indicate the differences between the first and second event of a pair. The advantages of the dataset are that it enables comparative analyses across all the paired events based on the indicators of change and allows for detailed context- and location-specific assessments based on the extensive data and reports of the individual study areas. The dataset can be used by the scientific community for exploratory data analyses, e.g. focused on causal links between risk management; changes in hazard, exposure and vulnerability; and flood or drought impacts. The data can also be used for the development, calibration, and validation of socio-hydrological models. The dataset is available to the public through the GFZ Data Services (Kreibich et al., 2023, 10.5880/GFZ.4.4.2023.001).
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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