1,735 research outputs found
Morality Without Borders: A Vision of Humanity as Community
Identity politics is on the rise, and not only in America, but throughout the world. It is an inherent nationalism, and when unbridled and unchecked, unleashes an exclusive ethic into society appealing, not to an expansive moral ought, but one that is narrow and provincial, condemning and vilifying. The fact of national diversity and the imprint of dissimilar value orientations often cause fear and insecurity among groups and sub-groups who are apt to condense their value-orientation vis-Ă -vis their national or cultural identity, promoting ethical relativism and neglecting core human values. With a diminishing of religionâs consecrated and sanctified moral vision, many are falling upon an idealized version of national identity to set the parameters of their moral horizon. This is often expressed as a âmoral superiorityâ implying the dominance of certain traditions and customs over those of others. We must be reminded that autocracy, national or religious, can be a tool of anyone seeking moral supremacy.
Looking back, history teaches that putting up constrictive, dogmatic borders is morally destructive, fencing out those with different views and stifling dialogue and civility within and without. Obviously, putting up ideological boundaries is apt to enclose those who profess a restrictive and/or superior ethic to unproductive and morality corrosive values. Being ethnocentric and tribal seems natural as there is a desire to protect our most cherished beliefs claiming moral superiority. Values are what define us; they are the substance of whom we are and reveal our commitments and convictions and their assumed authority. But our values can also limit our moral acuity, narrowing moral focus and diminishing its energy, unseeking of the commonalities that bind humanity to humanity. Clearly, itâs time to change this truncated narrative from an exclusive ethic to a morality without borders, exemplified as humanity as community.
Authoritarianism, displaying autocratic and anti-egalitarian values, is repressive and results in a limited and often amoral view of others. This we are witnessing today from all corners of the political spectrum, and not only in America, but elsewhere as well. For advancing a vision of the morally possible, an inclusive and expansive moral âoughtâ is needed, but terribly difficult to achieve or even articulate given the fact of cultural diversity, but we try. As Thomas Donaldson (1996, p.52) has noted, âWe all learn ethics in the context of our particular cultures, and the power in the principles is deeply tied to the way in which they are expressed. Internationally accepted lists of moral principles, such as the United Nationsâ Universal Declaration of Human Rights, draw on many cultural and religious traditions. As philosopher Michael Walzer (1983) has noted, âThere is no 2 Esperanto (an artificial language devised in 1887 as an international medium of communication, based on roots from the chief European languages) of global ethics.ââ
We simply express our view of a global ethic as a âmoral human ecologyâ supportive of an unrestrained moral vision drawing both humanity and the environment into its definitive natural fiber. How often we write in abstractions and generalities forgetting the people about whom we talk. Their needs and the inhumanity heaped upon them are seldom noticed. There is some distance between us and others, but with empathy and care and an unrestrictive vision of others, this fissure can be closed. Differing customs and traditions require our reconsideration and respect. What we expose is an ethic of diversity-seeking those basic and common values grounded in the idea of âhumanityâ itself. Given the present-day discombobulation of value, especially moral value, as witnessed in present-day politics, nuclear proliferation, human exploitation and misery in Central America, and continuous war in both Africa and the Middle East, âmorality without bordersâ presents a guiding metaphor beckoning our attention. âHumanity as Communityâ marks its location for it is a global imperative. Its possibilities are endless as it can become a beacon of hope in a divided world. But donât expect miracles; this will be a slow and evolutionary process as we naturally hold our values close, seldom unleashing them for public scrutiny.
Philosophically, more than words are needed and more than well-crafted arguments are required for human rights, understood as moral rights, to be judiciously spread around the world. Commitment, respect, planning, and action are also required. For those who are leaders in human rights proliferation as well as ordinary people whose voices need to be heard, this is an enabling vision. It acknowledges the essence of humanity as moral and does not contradict what the religiously oriented call the âsacredness of human life.â It also acknowledges the principles foundational to human rights, such as fairness and justice, decency and responsibility, and the importance of human dignity, integrity, nurture, and care. Not mere generalities, these values are drawn from personal and collective experience and an unhampered propensity to care for others. To say they are innate (Haidt, 2012, p. 31) is perhaps an overreach, but to recognize their human importance is not. As ethicist Kurt Baier pointed out in 1971 (p. 810), morality looks at the world from the point of view of everyone, that ââŠto be moralâŠis to recognize that others too, have a right to a worthwhile life.
Some inconsistencies of the finite element method as applied to inelastic response
The inadequacy of a two noded beam-column element with a linear axial and a cubic transverse displacement field for inelastic analysis is demonstrated. For complete equilibrium satisfaction in the linear elastic range a three noded beam-column element is shown to be consistent. Next, the sensitivity of the inelastic response to numerical solutions of the inelastic response of a cantilever beam resulting from approximate integration of strain energy are brought out and finally, consequences of this on the nonlinear transient response of structures are considered
Emergence of Kinetic Behavior in Streaming Ultracold Neutral Plasmas
We create streaming ultracold neutral plasmas by tailoring the photoionizing
laser beam that creates the plasma. By varying the electron temperature, we
control the relative velocity of the streaming populations, and, in conjunction
with variation of the plasma density, this controls the ion collisionality of
the colliding streams. Laser-induced fluorescence is used to map the spatially
resolved density and velocity distribution function for the ions. We identify
the lack of local thermal equilibrium and distinct populations of
interpenetrating, counter-streaming ions as signatures of kinetic behavior.
Experimental data is compared with results from a one-dimensional, two-fluid
numerical simulation.Comment: 8 pages, 6 figure
Creating Non-Maxwellian Velocity Distributions in Ultracold Plasmas
We present techniques to perturb, measure and model the ion velocity
distribution in an ultracold neutral plasma produced by photoionization of
strontium atoms. By optical pumping with circularly polarized light we promote
ions with certain velocities to a different spin ground state, and probe the
resulting perturbed velocity distribution through laser-induced fluorescence
spectroscopy. We discuss various approaches to extract the velocity
distribution from our measured spectra, and assess their quality through
comparisons with molecular dynamic simulationsComment: 13 pages, 8 figure
Velocity Relaxation in a Strongly Coupled Plasma
Collisional relaxation of Coulomb systems is studied in the strongly coupled
regime. We use an optical pump-probe approach to manipulate and monitor the
dynamics of ions in an ultracold neutral plasma, which allows direct
measurement of relaxation rates in a regime where common Landau-Spitzer theory
breaks down. Numerical simulations confirm the experimental results and display
non-Markovian dynamics at early times.Comment: 5 pages, 5 figure
The design and implementation of the Technical Facilities Controller (TFC) for the Goldstone deep space communications complex
The Technical Facilities Controller is a microprocessor-based energy management system that is to be implemented in the Deep Space Network facilities. This system is used in conjunction with facilities equipment at each of the complexes in the operation and maintenance of air-conditioning equipment, power generation equipment, power distribution equipment, and other primary facilities equipment. The implementation of the Technical Facilities Controller was completed at the Goldstone Deep Space Communications Complex and is now operational. The installation completed at the Goldstone Complex is described and the utilization of the Technical Facilities Controller is evaluated. The findings will be used in the decision to implement a similar system at the overseas complexes at Canberra, Australia, and Madrid, Spain
Ion Acoustic Waves in Ultracold Neutral Plasmas
We photoionize laser-cooled atoms with a laser beam possessing spatially periodic intensity modulations to create ultracold neutral plasmas with controlled density perturbations. Laser-induced fluorescence imaging reveals that the density perturbations oscillate in space and time, and the dispersion relation of the oscillations matches that of ion acoustic waves, which are long-wavelength, electrostatic, density waves
Morality Without Borders: A Vision of Humanity as Community
Identity politics is on the rise, and not only in America, but throughout the world. It is an inherent nationalism, and when unbridled and unchecked, unleashes an exclusive ethic into society appealing, not to an expansive moral ought, but one that is narrow and provincial, condemning and vilifying. The fact of national diversity and the imprint of dissimilar value orientations often cause fear and insecurity among groups and sub-groups who are apt to condense their value-orientation vis-Ă -vis their national or cultural identity, promoting ethical relativism and neglecting core human values. With a diminishing of religionâs consecrated and sanctified moral vision, many are falling upon an idealized version of national identity to set the parameters of their moral horizon. This is often expressed as a âmoral superiorityâ implying the dominance of certain traditions and customs over those of others. We must be reminded that autocracy, national or religious, can be a tool of anyone seeking moral supremacy.
Looking back, history teaches that putting up constrictive, dogmatic borders is morally destructive, fencing out those with different views and stifling dialogue and civility within and without. Obviously, putting up ideological boundaries is apt to enclose those who profess a restrictive and/or superior ethic to unproductive and morality corrosive values. Being ethnocentric and tribal seems natural as there is a desire to protect our most cherished beliefs claiming moral superiority. Values are what define us; they are the substance of whom we are and reveal our commitments and convictions and their assumed authority. But our values can also limit our moral acuity, narrowing moral focus and diminishing its energy, unseeking of the commonalities that bind humanity to humanity. Clearly, itâs time to change this truncated narrative from an exclusive ethic to a morality without borders, exemplified as humanity as community.
Authoritarianism, displaying autocratic and anti-egalitarian values, is repressive and results in a limited and often amoral view of others. This we are witnessing today from all corners of the political spectrum, and not only in America, but elsewhere as well. For advancing a vision of the morally possible, an inclusive and expansive moral âoughtâ is needed, but terribly difficult to achieve or even articulate given the fact of cultural diversity, but we try. As Thomas Donaldson (1996, p.52) has noted, âWe all learn ethics in the context of our particular cultures, and the power in the principles is deeply tied to the way in which they are expressed. Internationally accepted lists of moral principles, such as the United Nationsâ Universal Declaration of Human Rights, draw on many cultural and religious traditions. As philosopher Michael Walzer (1983) has noted, âThere is no 2 Esperanto (an artificial language devised in 1887 as an international medium of communication, based on roots from the chief European languages) of global ethics.ââ
We simply express our view of a global ethic as a âmoral human ecologyâ supportive of an unrestrained moral vision drawing both humanity and the environment into its definitive natural fiber. How often we write in abstractions and generalities forgetting the people about whom we talk. Their needs and the inhumanity heaped upon them are seldom noticed. There is some distance between us and others, but with empathy and care and an unrestrictive vision of others, this fissure can be closed. Differing customs and traditions require our reconsideration and respect. What we expose is an ethic of diversity-seeking those basic and common values grounded in the idea of âhumanityâ itself. Given the present-day discombobulation of value, especially moral value, as witnessed in present-day politics, nuclear proliferation, human exploitation and misery in Central America, and continuous war in both Africa and the Middle East, âmorality without bordersâ presents a guiding metaphor beckoning our attention. âHumanity as Communityâ marks its location for it is a global imperative. Its possibilities are endless as it can become a beacon of hope in a divided world. But donât expect miracles; this will be a slow and evolutionary process as we naturally hold our values close, seldom unleashing them for public scrutiny.
Philosophically, more than words are needed and more than well-crafted arguments are required for human rights, understood as moral rights, to be judiciously spread around the world. Commitment, respect, planning, and action are also required. For those who are leaders in human rights proliferation as well as ordinary people whose voices need to be heard, this is an enabling vision. It acknowledges the essence of humanity as moral and does not contradict what the religiously oriented call the âsacredness of human life.â It also acknowledges the principles foundational to human rights, such as fairness and justice, decency and responsibility, and the importance of human dignity, integrity, nurture, and care. Not mere generalities, these values are drawn from personal and collective experience and an unhampered propensity to care for others. To say they are innate (Haidt, 2012, p. 31) is perhaps an overreach, but to recognize their human importance is not. As ethicist Kurt Baier pointed out in 1971 (p. 810), morality looks at the world from the point of view of everyone, that ââŠto be moralâŠis to recognize that others too, have a right to a worthwhile life.
Demonstrating Universal Scaling in Quench Dynamics of a Yukawa One-Component Plasma
The Yukawa one-component plasma (OCP) is a paradigm model for describing
plasmas that contain one component of interest and one or more other components
that can be treated as a neutralizing, screening background. In appropriately
scaled units, interactions are characterized entirely by a screening parameter,
. As a result, systems of similar show the same dynamics,
regardless of the underlying parameters (e.g., density and temperature). We
demonstrate this behavior using ultracold neutral plasmas (UNP) created by
photoionizing a cold ( mK) gas. The ions in UNP systems are well
described by the Yukawa model, with the electrons providing the screening.
Creation of the plasma through photoionization can be thought of as a rapid
quench from to a final value set by the electron
density and temperature. We demonstrate experimentally that the post-quench
dynamics are universal in over a factor of 30 in density and an order
of magnitude in temperature. Results are compared with molecular dynamics
simulations. We also demonstrate that features of the post-quench kinetic
energy evolution, such as disorder-induced heating and kinetic-energy
oscillations, can be used to determine the plasma density and the electron
temperature.Comment: 10 pages, 12 figures, to be submitted to Physical Review
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