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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 742-742 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Because of the complicated nature of the above equation the quasi-longitudinal and quasi-transverse approximations, first discussed by Booker2, are often used. The quasi-longitudinal approximation holds when: yyv4iv^;(i - xy + z* (2) It is generally quoted as: n2 - 1 -X/(l -iZ ± \YL\) (3) ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    Philosophy 64 (1989), S. 349-362 
    ISSN: 0031-8191
    Source: Cambridge Journals Digital Archives
    Topics: Philosophy
    Notes: Moral theories which, like those of Plato, Aristotle and Aquinas, give a central place to the virtues, tend to assume that as traits of character the virtues are mutually compatible so that it is possible for one and the same person to possess them all. This assumption—let us call it the compatibility thesis—does not deny the existence of painful moral dilemmas: it allows that the virtues may conflict in particular situations when considerations associated with different virtues favour incompatible courses of action, but holds that these conflicts occur only at the level of individual actions. Thus while it may not always be possible to do both what would be just and what would be kind or to act both loyally and honestly, it is possible to be both a kind and a just person and to have both the virtue of loyalty and the virtue of honesty.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Ratio 6 (1993), S. 0 
    ISSN: 1467-9329
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Philosophy
    Notes: The paper examines a single, apparently simple argument for the existence of incompatibilities between the virtues as traits of character. This argument appeals not to empirical truths about human psychology or human nature but to the possibility of conflict between the exercise of different virtues in action. There are, for example, situations in which we can exercise the virtue of truthfulness only at the expense of not exercising the virtue of tact, as when we are asked a question to which the straightforward answer will pain our questioner. The person who in these situations would give a straightforward answer possesses the virtue of truthfulness to a higher degree than the person who would respond more evasively, whereas the latter person possesses the virtue of tact to a higher degree than the former. But since the two responses are mutually exclusive, it follows that the degree to which we possess the virtue of truthfulness must, at least in some measure, correlate inversely with the degree to which we possess the virtue of tact. And similarly for many other pairs of virtues. My paper focusses on the two cardinal assumptions of this argument, viz., (i) that sometimes the exercise of one virtue can conflict with the exercise of another, and (ii) that the degree to which a person possesses a virtue correlates directly with the extent of its exercise, and defends both assumptions against a variety of objections which allege that, in different ways, they are insensitive to the complexity of the virtues.
    Type of Medium: Electronic Resource
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  • 4
    facet.materialart.
    Unknown
    Assen : Periodicals Archive Online (PAO)
    Phronesis. 24 (1979) 180 
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 273 (1978), S. 646-649 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure 1 shows an example of a drift velocity pattern observed by STARE within the viewing area during the event. This pattern represents a 20-s average and values are plotted at 20-km intervals in geographic longitude and latitude. The precise method of deriving this plot is described by Greenwald ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 230 (1995), S. 415-430 
    ISSN: 1572-946X
    Keywords: ionospheric radar ; magnetospheric convection ; ULF pulsations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Ionospheric radars are an important tool for studying magnetospheric dynamics. The nature of such instruments is described and their application to a number of important problems is discussed, emphasizing South African work. A study of the theory of reflection from irregularities is discussed. The nature of ULF pulsations of more than one type has been elucidated by radar studies. An improvement of the understanding of magnetospheric convection has been achieved. A new HF radar experiment being developed for operation at SANAE, Antarctica, is described. An HF radar will be operated at SANAE in conjunction with the British radar at Halley to provide vector information about magnetospheric convection within that part of the magnetosphere which maps to a large portion of the Antarctic continent. The radar will be part of the SuperDARN international network of radars.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Dual Auroral Radar Network (DARN) is a global-scale network of HF and VHF radars capable of sensing backscatter from ionospheric irregularities in the E and F-regions of the high-latitude ionosphere. Currently, the network consists of the STARE VHF radar system in northern Scandinavia, a northern-hemisphere, longitudinal chain of HF radars that is funded to extend from Saskatoon, Canada to central Finland, and a southern-hemisphere chain that is funded to include Halley Station, SANAE and Syowa Station in Antarctica. When all of the HF radars have been completed they will operate in pairs with common viewing areas so that the Doppler information contained in the backscattered signals may be combined to yield maps of high-latitude plasma convection and the convection electric field. In this paper, the evolution of DARN and particularly the development of its SuperDARN HF radar element is discussed. The DARN/SupperDARN network is particularly suited to studies of large-scale dynamical processes in the magnetosphere-ionosphere system, such as the evolution of the global configuration of the convection electric field under changing IMF conditions and the development and global extent of large-scale MHD waves in the magnetosphere-ionosphere cavity. A description of the HF radars within SuperDARN is given along with an overview of their existing and intended locations, intended start of operations, Principal Investigators, and sponsoring agencies. Finally, the operation of the DARN experiment within ISTP/GGS, the availability of data, and the form and availability of the Key Parameter files is discussed.
    Type of Medium: Electronic Resource
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