3,141 research outputs found
Low-energy excitations in electron-doped metal phthalocyanine from NMR in LiMnPc
Li and H NMR and magnetization measurements in \lpc
(PcCHN), recently proposed as a strongly correlated
metal, are presented. Two different low-frequency dynamics are evidenced. The
first one, probed by H nuclei gives rise to a slowly relaxing magnetization
at low temperature and is associated with the freezing of MnPc spins.
This dynamic is similar to the one observed in pristine -MnPc and
originates from Li depleted chain segments. The second one, evidenced by Li
spin-lattice relaxation rate, is associated with the hopping of the electrons
along Li-rich chains. The characteristic correlation times for the two dynamics
are derived and the role of disorder is briefly discussed.Comment: 7 two-columns pages, 11 figure
Searching for Narcotics in San Diego: Preliminary Findings From the San Diego Search Warrant Project
Dual Pairs of Generalized Lyapunov Inequalities and Balanced Truncation of Stochastic Linear Systems
1997 Spacecraft Contamination and Coatings Workshop
This volume contains the presentation charts of talks given at the "1997 Spacecraft Contamination and Coatings Workshop," held July 9-10, 1997, in Annapolis, Maryland. The workshop was attended by representatives from NASA, Jet Propulsion Laboratory, Department of Defense, industry, and universities concerned with the the spacecraft contamination engineering and thermal control coatings. The workshop provided a forum for exchanging new developments in spacecraft contamination and coatings
Virtue and austerity
Virtue ethics is often proposed as a third way in health-care ethics, that while consequentialism and deontology focus on action guidelines, virtue focuses on character; all three aim to help agents discern morally right action although virtue seems to have least to contribute to political issues, such as austerity. I claim: (1) This is a bad way to characterize virtue ethics. The 20th century renaissance of virtue ethics was first proposed as a response to the difficulty of making sense of ‘moral rightness’ outside a religious context. For Aristotle the right action is that which is practically best; that means best for the agent in order to live a flourishing life.There are no moral considerations besides this. (2) Properly characterized, virtue ethics can contribute to discussion of austerity.
A criticism of virtue ethics is that fixed characteristics seem a bad idea in ever-changing environments; perhaps we should be generous in prosperity, selfish in austerity. Furthermore, empirical evidence suggests that people indeed do change with their environment. However, I argue that
virtues concern fixed values not fixed behaviour; the values underlying virtue allow for different behaviour in different circumstances: in austerity, virtues still give the agent the best chance of flourishing. Two questions
arise. (a) In austere environments might not injustice help an individual flourish by, say, obtaining material goods? No, because unjust acts undermine the type of society the agent needs for flourishing. (b) What good is virtue to those lacking the other means to flourish? The notion of degrees of flourishing shows that most people would benefit
somewhat from virtue. However, in extreme circumstances virtue might harm rather than benefit the agent: such circumstances are to be avoided; virtue ethics thus has a political agenda to enable flourishing.
This requires justice, a fortiori when in austerity
Universality of rain event size distributions
We compare rain event size distributions derived from measurements in
climatically different regions, which we find to be well approximated by power
laws of similar exponents over broad ranges. Differences can be seen in the
large-scale cutoffs of the distributions. Event duration distributions suggest
that the scale-free aspects are related to the absence of characteristic scales
in the meteorological mesoscale.Comment: 16 pages, 10 figure
- …