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  • 1
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    Experimental Criteria for Evaluating Workers and Operations (1949)
    Ithaca, N.Y. : Periodicals Archive Online (PAO)
    Industrial and Labor Relations Review. 2:4 (1949:July) 502 
    Details
    ISSN: 0019-7939
    Topics: Economics
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3121-1949-002-04-000002
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    Paper (German National Licenses)
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  • 2
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    "Frank and Lillian Gilbreth: Partners for Life," by Edna Yost (Book Review) (1950)
    Ithaca, N.Y. : Periodicals Archive Online (PAO)
    Industrial and Labor Relations Review. 3:4 (1950:July) 612 
    Details
    ISSN: 0019-7939
    Topics: Economics
    Notes: REVIEWS
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3121-1950-003-04-000017
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    Paper (German National Licenses)
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  • 3
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    "How to Chart Time Study Data," by Phil Carroll (Book Review) (1952)
    Ithaca, N.Y. : Periodicals Archive Online (PAO)
    Industrial and Labor Relations Review. 5:3 (1952:Apr.) 468 
    Details
    ISSN: 0019-7939
    Topics: Economics
    Notes: REVIEWS
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3121-1952-005-03-000018
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Liquid-crystalline main-chain polymers with a poly(p-phenylene terephthalate) backbone, 9.Part 8: cf. ref.10 Dynamic mechanical and dielectric behaviour of the polyester with 6-(pentyloxy)hexyloxy side chains (1994)
    Weinheim : Wiley-Blackwell
    Macromolecular Chemistry and Physics 195 (1994), S. 2261-2266 
    Details
    ISSN: 1022-1352
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: In the liquid-crystalline polymer poly(p-phenylene terephthalate) with dodecyloxy side chains the various possible crystalline structures of the side chain layers determine the mechanical and dielectric behaviour in the solid state. In this investigation the influence of replacement of the methylene unit at the centre of the side chain by an oxygen atom is studied by means of dynamic mechanical and dielectric measurements. It turns out that the oxygen replacement results in an obstruction of crystallization within the side-chain layers, as is clearly manifested by the enhancement of the β-relaxation (attributed to the amorphous side-chain regions) and the nearly complete disappearance of the β*-relaxation (crystalline side-chain regions).
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1994.021950631
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  • 5
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    Climatology and Northern winter variability of the middle atmosphere modelled with UA-ICON (NWP) (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-09-29
    Description: The ICON model with upper atmosphere extension (UA-ICON) running with the Atmosphere in the Earth System (AES) physics package suffers from a weak stratospheric polar vortex, though this package is intended for simulations of ICON on the seasonal to climatological time scales. For example, UA-ICON (AES) data from model free runs predict an unrealistically high number of SSWs per decade. However, due to the weak polar vortex, the simulated SSWs are of too weak intensity concerning the polar cap averaged temperature and mid-latitude zonal mean, zonal wind anomalies compared to observations. The climatology and variability of the Northern hemispheric (NH) stratospheric winter circulation widely improve when applying ICON and UA-ICON with the physics package for numerical weather prediction (NWP). However, whereas the NWP physics package is implemented technically for UA-ICON, it is not well-tuned for the upper mesosphere/ lower thermosphere (UMLT) region. This concerns, e.g. the temperatures in the summer mesopause regions at both hemispheres, which are much too warm, or the zonal mean wind structures in the lower thermosphere, which do not show the wind reversals from westerly to the easterly zonal wind in winter and vice versa in summer. These problems are caused mainly by an underrepresentation of the non-orographic gravity wave drag (NGWD), implemented with the parametrization based on Warner and McIntyre. The orographic gravity wave drag (OGWD) implemented with a parametrization based on Lott and Miller acts mainly in the stratosphere, but OGWD tuning also influences temperatures in the mesopause.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 6
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    (Table 1) Regional mass trends of the Greenland ice sheet for the common time interval October 2003-2009
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: ANU* corrected GRACE satellite data, CSR-RL04; Area; Area/locality; Event label; Greenland; Greenland_A; Greenland_B; Greenland_C; Greenland_D; Greenland_E; Greenland_F; Greenland_G; Greenland_Ice; ICE-5G* corrected GRACE satellite data, CSR-RL04; ICESat satellite data, ICE-5G corrected; Mass balance; SAT; Satellite remote sensing; Standard deviation; Surface mass balance and ice discharge SMB-D; Time coverage
    Type: Dataset
    Format: text/tab-separated-values, 88 data points
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  • 7
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    (Table 2) Regional mass trends and acceleration of the Greenland ice sheet for the common time interval August 2002-2010
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Acceleration; Area; Area/locality; Event label; Greenland; Greenland_A; Greenland_B; Greenland_C; Greenland_D; Greenland_E; Greenland_F; Greenland_G; Greenland_Ice; ICE-5G* corrected GRACE satellite data, CSR-RL04; Mass balance; SAT; Satellite remote sensing; Standard deviation; Surface mass balance and ice discharge SMB-D; Time coverage
    Type: Dataset
    Format: text/tab-separated-values, 104 data points
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  • 8
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    Mass balance and acceleration of the Greenland ice sheet (2012)
    PANGAEA
    In:  Supplement to: Sasgen, Ingo; van den Broeke, Michiel R; Bamber, Jonathan L; Rignot, Eric; Sørensen, Louise Sandberg; Wouters, Bert; Martinec, Zdenek; Velicogna, Isabella; Simonsen, Sebastian B (2012): Timing and origin of recent regional ice-mass loss in Greenland. Earth and Planetary Science Letters, 333-334, 293-303, https://doi.org/10.1016/j.epsl.2012.03.033
    Details
    Publication Date: 2023-12-13
    Description: Within the last decade, the Greenland ice sheet (GrIS) and its surroundings have experienced record high surface temperatures (Mote, 2007, doi:10.1029/2007GL031976; Box et al., 2010), ice sheet melt extent (Fettweis et al., 2011, doi:10.5194/tc-5-359-2011) and record-low summer sea-ice extent (Nghiem et al., 2007, doi:10.1029/2007GL031138). Using three independent data sets, we derive, for the first time, consistent ice-mass trends and temporal variations within seven major drainage basins from gravity fields from the Gravity Recovery and Climate Experiment (GRACE; Tapley et al., 2004, doi:10.1029/2004GL019920), surface-ice velocities from Inteferometric Synthetic Aperture Radar (InSAR; Rignot and Kanagaratnam, 2006, doi:10.1126/science.1121381) together with output of the regional atmospheric climate modelling (RACMO2/ GR; Ettema et al., 2009, doi:10.1029/2009GL038110), and surface-elevation changes from the Ice, cloud and land elevation satellite (ICESat; Sorensen et al., 2011, doi:10.5194/tc-5-173-2011). We show that changing ice discharge (D), surface melting and subsequent run-off (M/R) and precipitation (P) all contribute, in a complex and regionally variable interplay, to the increasingly negative mass balance of the GrIS observed within the last decade. Interannual variability in P along the northwest and west coasts of the GrIS largely explains the apparent regional mass loss increase during 2002-2010, and obscures increasing M/R and D since the 1990s. In winter 2002/2003 and 2008/2009, accumulation anomalies in the east and southeast temporarily outweighed the losses by M/R and D that prevailed during 2003-2008, and after summer 2010. Overall, for all basins of the GrIS, the decadal variability of anomalies in P, M/R and D between 1958 and 2010 (w.r.t. 1961-1990) was significantly exceeded by the regional trends observed during the GRACE period (2002-2011).
    Keywords: International Polar Year (2007-2008); IPY
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 9
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    NorthGRIP firn temperature reconstruction based on water isotope firn diffusion (2014)
    PANGAEA
    In:  Supplement to: Gkinis, Vasileios; Simonsen, Sebastian B; Buchardt, Susanne L; White, James W C; Vinther, Bo Møllesøe (2014): Water isotope diffusion rates from the NorthGRIP ice core for the last 16,000 years – Glaciological and paleoclimatic implications. Earth and Planetary Science Letters, 405, 132-141, https://doi.org/10.1016/j.epsl.2014.08.022
    Details
    Publication Date: 2024-03-18
    Description: A high resolution (0.05 m) water isotopic record (d18O) is available from the NorthGRIP ice core. In this study we look into the water isotope diffusion history as estimated by the spectral characteristics of the d18O time series covering the last 16,000 years. The diffusion of water vapor in the porous medium of the firn pack attenuates the initial isotopic signal, predominantly having an impact on the high frequency components of the power spectrum. Higher temperatures induce higher rates of smoothing and thus the signal can be used as a firn paleothermometer. We use a water isotope diffusion model coupled to a steady-state densification model in order to infer the temperature signal from the site, assuming the accumulation and strain rate history as estimated using the GICC05 layer counted chronology and a Dansgaard-Johnsen ice flow model. The temperature reconstruction accurately captures the timing and magnitude of the Bølling-Allerød and Younger Dryas transitions. A Holocene climatic optimum is seen between 7 and 9 ky b2k with an apparent cooling trend thereafter. Our temperature estimate for the Holocene climatic optimum, points to a necessary adjustment of the ice thinning function indicating that the ice flow model overestimates past accumulation rates by about 10% at 8 ky b2k. This result, is supported by recent gas isotopic fractionation studies proposing a similar reduction for glacial conditions. Finally, the record presents a climatic variability over the Holocene spanning millennial and centennial scales with a profound cooling occurring at approximately 4000 years b2k. The new reconstruction technique is able to provide past temperature estimates by overcoming the issues apparent in the use of the classical d18O slope method. It can at the same time resolve temperature signals at low and high frequencies.
    Keywords: NGRIP; North Greenland Ice Core Project
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 10
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    Water stable isotope record of ice cores NGRIP I and II (2018)
    PANGAEA
    In:  Supplement to: Gkinis, Vasileios; Simonsen, Sebastian B; Buchardt, Susanne L; White, James W C; Vinther, Bo Møllesøe (2014): Water isotope diffusion rates from the NorthGRIP ice core for the last 16,000 years – Glaciological and paleoclimatic implications. Earth and Planetary Science Letters, 405, 132-141, https://doi.org/10.1016/j.epsl.2014.08.022
    Details
    Publication Date: 2024-03-18
    Description: A high resolution (0.05 m) water isotopic record (d18O) is available from the NorthGRIP ice core. In this study we look into the water isotope diffusion history as estimated by the spectral characteristics of the d18O time series covering the last 16,000 years. The diffusion of water vapor in the porous medium of the firn pack attenuates the initial isotopic signal, predominantly having an impact on the high frequency components of the power spectrum. Higher temperatures induce higher rates of smoothing and thus the signal can be used as a firn paleothermometer. We use a water isotope diffusion model coupled to a steady-state densification model in order to infer the temperature signal from the site, assuming the accumulation and strain rate history as estimated using the GICC05 layer counted chronology and a Dansgaard-Johnsen ice flow model. The temperature reconstruction accurately captures the timing and magnitude of the Bølling-Allerød and Younger Dryas transitions. A Holocene climatic optimum is seen between 7 and 9 ky b2k with an apparent cooling trend thereafter. Our temperature estimate for the Holocene climatic optimum, points to a necessary adjustment of the ice thinning function indicating that the ice flow model overestimates past accumulation rates by about 10% at 8 ky b2k. This result, is supported by recent gas isotopic fractionation studies proposing a similar reduction for glacial conditions. Finally, the record presents a climatic variability over the Holocene spanning millennial and centennial scales with a profound cooling occurring at approximately 4000 years b2k. The new reconstruction technique is able to provide past temperature estimates by overcoming the issues apparent in the use of the classical d18O slope method. It can at the same time resolve temperature signals at low and high frequencies.
    Keywords: DEPTH, ice/snow; Greenland; Greenland Ice Core Projects; GRIP/GISP/NGRIP; ICEDRILL; Ice drill; NGRIP; North Greenland Ice Core Project; NorthGRIP; Sampling/drilling ice; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 800 data points
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    DATA PANGAEA
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