66 research outputs found

    John Paul II and Christian Personalism vs. Peter Singer and Utilitarianism: Two Radically Opposed Conceptions of the Nature and Meaning of Suffering

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    Although Christian ethics and contemporary utilitarianism both employ terms such as love and compassion, they are in fact polar opposite ethical views. This fact is not at all easy to discern. One key to perceiving the radical opposition between them lies in clarifying their respective concepts of suffering. In the Christian view, suffering is always understood as the suffering of individual persons, while in utilitarianism suffering is primarily understood as a quantifiable entity detached from the individuals who experience it. The paper attempts a primarily philosophical elucidation of this difference, including some theological points, by taking as its point of departure John Paul II\u27s presentation of the three-fold sense in which suffering has the potential to unleash of love. Following a presentation of the utilitarian view, it then proceeds to explore the relation between suffering and love by probing the public statements on the experience of Peter Singer in the struggle with his mother s debilitating illness. The paper concludes with the presentation of a premise built into the structure of contemporary utilitarian ethics rendering it inherently self-defeating with respect to its own stated goal

    Personhood, the Soul and Non-Conscious Human Beings: Some Critical Reflections on Recent Forms of Argumentation within the Pro-Life Movement

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    This paper has grown out of concerns that I have about the way in which some pro-life arguments have been developing recently, and it is written in a spirit of frank dialogue with those whom I consider allies. I present three basic problems within some prominent contemporary pro-life argumentation, all three of which are rooted in a general tendency towards relying on empirical science in an increasingly exclusive way as the foundation of those arguments. The three problems that I touch on are: a neglect of the role of God in human procreation, a neglect of the dignity of women, and a neglect of understanding personal being

    The Uniqueness of Persons in the Life and Thought of Karol Wojtyła/Pope John Paul II, with Emphasis on His Indebtedness to Max Scheler

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    The uniqueness of persons is explored philosophically in the writings of Max Scheler and Pope John Paul II

    A seminal paper linking ocean acoustics and physical oceanography

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    17 USC 105 interim-entered record; under review.A look back at a historical article that had a significant impact on the science and pradtice of acoustics. Article: Sound propagation through a fluctuating stratified ocean: Theory and observation Author: Walter H. Munk and Fred Zachariasen Publication Date: April 1976 (JASA 59, 818); https://doi.org/10.1121/1.38093

    Personhood, the Soul and Non-Conscious Human Beings: Some Critical Reflections on Recent Forms of Argumentation within the Pro-Life Movement

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    This paper has grown out of concerns that I have about the way in which some pro-life arguments have been developing recently, and it is written in a spirit of frank dialogue with those whom I consider allies. I present three basic problems within some prominent contemporary pro-life argumentation, all three of which are rooted in a general tendency towards relying on empirical science in an increasingly exclusive way as the foundation of those arguments. The three problems that I touch on are: a neglect of the role of God in human procreation, a neglect of the dignity of women, and a neglect of understanding personal being

    Observations of sound-speed fluctuations in the Beaufort Sea from summer 2016 to summer 2017

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    © The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Kucukosmanoglu, M., Colosi, J. A., Worcester, P. F., Dzieciuch, M. A., & Torres, D. J. Observations of sound-speed fluctuations in the Beaufort Sea from summer 2016 to summer 2017. Journal of the Acoustical Society of America, 149(3), (2021): 1536-1548, https://doi.org/10.1121/10.0003601.Due to seasonal ice cover, acoustics can provide a unique means for Arctic undersea communication, navigation, and remote sensing. This study seeks to quantify the annual cycle of the thermohaline structure in the Beaufort Sea and characterize acoustically relevant oceanographic processes such as eddies, internal waves, near-inertial waves (NIWs), and spice. The observations are from a seven-mooring, 150-km radius acoustic transceiver array equipped with oceanographic sensors that collected data in the Beaufort Sea from 2016 to 2017. Depth and time variations of the sound speed are analyzed using isopycnal displacements, allowing a separation of baroclinic processes and spice. Compared to lower latitudes, the overall sound speed variability is small with a maximum root mean square of 0.6 m/s. The largest source of variability is spice, most significant in the upper 100 m, followed by eddies and internal waves. The displacement spectrum in the internal wave band is time dependent and different from the Garret-Munk (GM) spectrum. The internal wave energy varied with time averaging 5% of the GM spectrum. The spice sound-speed frequency spectrum has a form very different from the displacement spectrum, a result not seen at lower latitudes. Because sound speed variations are weak, observations of episodic energetic NIWs with horizontal currents up to 20 cm/s have potential acoustical consequences.This research was supported by the Office of Naval Research (ONR) and M.K. was supported by an ONR Ocean Acoustics Graduate Student Fellowship under Award No. N00014-19-1-2203. The 600 kHz ADCP and IPS ice draft data were supported by the ONR Arctic and Global Prediction Program (ONR 322AG) under Award No. N00014-15-1-2782. This material is based on work supported by the ONR under Award No. N00014-15-2068

    Weakly dispersive modal pulse propagation in the North Pacific Ocean

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    Author Posting. © Acoustical Society of America, 2013. This article is posted here by permission of Acoustical Society of America or personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 134 (2013): 3386, doi:10.1121/1.4820882.The propagation of weakly dispersive modal pulses is investigated using data collected during the 2004 long-range ocean acoustic propagation experiment (LOAPEX). Weakly dispersive modal pulses are characterized by weak dispersion- and scattering-induced pulse broadening; such modal pulses experience minimal propagation-induced distortion and are thus well suited to communications applications. In the LOAPEX environment modes 1, 2, and 3 are approximately weakly dispersive. Using LOAPEX observations it is shown that, by extracting the energy carried by a weakly dispersive modal pulse, a transmitted communications signal can be recovered without performing channel equalization at ranges as long as 500 km; at that range a majority of mode 1 receptions have bit error rates (BERs) less than 10%, and 6.5% of mode 1 receptions have no errors. BERs are estimated for low order modes and compared with measurements of signal-to-noise ratio (SNR) and modal pulse spread. Generally, it is observed that larger modal pulse spread and lower SNR result in larger BERs.This work was supported by the Office of Naval Research, Code 322, Grant Nos. N00014-06-1-0245, N00014-08-1-0195, and N00014-11-1-0194

    Analysis of Deep Seafloor Arrivals observed on NPAL04

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    This report gives an overview of the analysis that was done on Deep Seafloor Arrivals since they were initially presented in Stephen et al (2009). All of the NPAL04/LOAPEX (North Pacific Acoustic Laboratory, 2004/ Long Range Ocean Acoustic Propagation Experiment) data on three ocean bottom seismometers (OBSs) at ~5,000m depth and the deepest element of the deep vertical line array (DVLA) at 4250m depth has been analyzed. A distinctive pattern of late arrivals was observed on the three OBSs for transmissions from T500 to T2300. The delays of these arrivals with respect to the parabolic equation predicted (PEP) path were the same for all ranges from 500 to 2300km, indicating that the delay was introduced near the receivers. At 500km range the same arrival was observed throughout the water column on the DVLA. We show that arrivals in this pattern converted from a PEP path to a bottom-diffracted surface reflected (BDSR) path at an off-geodesic seamount.Funding was provided by the Office of Naval Research under Contract No. N00014-10-1-0510

    Modal analysis of the range evolution of broadband wavefields in the North Pacific Ocean : low mode numbers

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    Author Posting. © Acoustical Society of America, 2012. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 131 (2012): 4409-4427, doi:10.1121/1.4707431.The results of mode-processing measurements of broadband acoustic wavefields made in the fall of 2004 as part of the Long-Range Ocean Acoustic Propagation Experiment (LOAPEX) in the eastern North Pacific Ocean are reported here. Transient wavefields in the 50–90 Hz band that were recorded on a 1400 -m long 40 element vertical array centered near the sound channel axis are analyzed. This array was designed to resolve low-order modes. The wavefields were excited by a ship-suspended source at seven ranges, between approximately 50 and 3200 km, from the receiving array. The range evolution of broadband modal arrival patterns corresponding to fixed mode numbers (“modal group arrivals”) is analyzed with an emphasis on the second (variance) and third (skewness) moments. A theory of modal group time spreads is described, emphasizing complexities associated with energy scattering among low-order modes. The temporal structure of measured modal group arrivals is compared to theoretical predictions and numerical simulations. Theory, simulations, and observations generally agree. In cases where disagreement is observed, the reasons for the disagreement are discussed in terms of the underlying physical processes and data limitations.This work was supported by the Office of Naval Research, Code 322, Grant Nos. N00014-08-1-0195, N00014-06-1-0245, and N0014-11-1-0194

    Temporal and spatial dependence of a yearlong record of sound propagation from the Canada Basin to the Chukchi Shelf

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    Author Posting. © Acoustical Society of America, 2020. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 148(3),(2020): 1663, doi:10.1121/10.0001970.The Pacific Arctic Region has experienced decadal changes in atmospheric conditions, seasonal sea-ice coverage, and thermohaline structure that have consequences for underwater sound propagation. To better understand Arctic acoustics, a set of experiments known as the deep-water Canada Basin acoustic propagation experiment and the shallow-water Canada Basin acoustic propagation experiment was conducted in the Canada Basin and on the Chukchi Shelf from summer 2016 to summer 2017. During the experiments, low-frequency signals from five tomographic sources located in the deep basin were recorded by an array of hydrophones located on the shelf. Over the course of the yearlong experiment, the surface conditions transitioned from completely open water to fully ice-covered. The propagation conditions in the deep basin were dominated by a subsurface duct; however, over the slope and shelf, the duct was seen to significantly weaken during the winter and spring. The combination of these surface and subsurface conditions led to changes in the received level of the sources that exceeded 60 dB and showed a distinct spacio-temporal dependence, which was correlated with the locations of the sources in the basin. This paper seeks to quantify the observed variability in the received signals through propagation modeling using spatially sparse environmental measurements.This work was supported by the Office of Naval Research Ocean Acoustics Program (ONR OA322) under Grant Nos. N00014-15-1-2144, N00014-15-1-2119, N00014-15-1-2017, N00014-15-1-2068, N00014-15-1-2110, N00014-19-1-2721, N00014-15-1-2898, N00014-15-1-2806, and N00014-18-1-2140. The basin moored environmental data were supported by the ONR Arctic and Global Prediction Program (ONR AG322) under Grant No. N00014-15-1-2782. Mooring and hydrographic data were collected and made available by the Beaufort Gyre Exploration Program based at the Woods Hole Oceanographic Institution (http://www.whoi.edu/beaufortgyre) in collaboration with researchers from Fisheries and Oceans Canada at the Institute of Ocean Sciences. The ITP data were collected and made available by the ITP Program (Krishfield et al., 2008; Toole et al., 2011) based at the Woods Hole Oceanographic Institution (http://www.whoi.edu/itp). We acknowledge the use of imagery from the Worldview Snapshots application (https://wvs.earthdata.nasa.gov), part of the Earth Observing System Data and Information System (EOSDIS).2021-03-2
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