6,968 research outputs found
Foreword: Looking for a Miracle? Women, Work, and Effective Legal Change
Foreword to vol. 13, Duke Journal of Gender Law & Polic
The acceleration of energetic particles in the interplanetary medium by transit-time damping
Transit time damping is examined as a possible means for accelerating low energy particles in co-rotating streams and interstellar ions. Data show that: the protons in co-rotating streams may be accelerated by transient-time damping the small-scale variations in the field magnitude that are observed at a low level in the inner solar system. The interstellar ions may be accelerated by transit time damping large-scale field variations in the outer solar system
Solar modulation of galactic cosmic rays 4: Latitude dependent modulation
A numerical method is outlined for solving the equation which describes the solar modulation of cosmic rays in models where interplanetary conditions can vary with heliocentric latitude. As an illustration of the use of this method, it is shown how variations in the modulation with latitude could produce the small radial gradients in the intensity that were observed from the Pioneers 10 and 11 spacecraft
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Social and democratic participation in residential settings for older people: realities and aspiration
This paper explores some of the experiences of older people living in residential settings (sheltered, very sheltered housing and residential care), in the context of theories of participation, consumerism and citizenship. It draws on material from personal interviews undertaken with over 100 older people in England and Wales, and also from discussions with staff. Two-thirds of respondents were aged over 85. A significant minority of residents expressed some concerns about the routines of life, such as meals and social contact. Staff expectations of social participation were often unrealistic : for many residents, social contact was more a matter of adjustment than of friendship. Residents did not participate in deciding how the residential settings where they lived should be organised and managed, except for helping with simple domestic tasks. There is a need to change both attitudes and practice to enable older people to participate more fully in these settings
Damping of high frequency waves in the solar wind
Cyclotron damping by suprathermal fluxes of protons and electrons in the interplanetary medium will greatly attenuate high frequency Alfven waves and whistler waves within distances 1 AU of the sun. Electrons with energies between 50 eV to 2 KeV are heated as a result of damping interplanetary whistler waves with frequencies 2 omega meson/2 pion 30 Hz in the frame of the solar wind. This heating may account, in part, for the observed suprathermal tail of solar wind electrons. Protons with energies approximately 50 KeV damp Alfven waves with frequencies .001 omega meson/2 pion .01 Hz. This damping mechanism may explain several features of a scatter free solar electron events and high intensity, anisotropic solar proton streams
Quiet-time electron increases, a measure of conditions in the outer solar system
One possible explanation for quiet-time electron increases, increases in the intensity of 3-12 MeV interplanetary electrons that have been reported by McDonald, Cline and Simnett, is discussed. It is argued that the electrons in quiet-time increases are galactic in origin, but that the observed increases are not the result of any variation in the modulation of these particles in the inner solar system. It is suggested instead that quiet-time increases may occur when more electrons than normal penetrate a modulating region that lies far beyond the orbit of earth. The number of electrons penetrating this region may increase when field lines that have experienced an unusually large random walk in the photosphere are carried by the solar wind out to the region. As evidence for this increased random walk, it is shown that five solar rotations before most of the quiet-time increases there is an extended period when the amplitude of the diurnal anisotropy, as is measured by the Deep River neutron monitor, is relatively low. Five rotations delay time implies that the proposed modulating region lies at approximately 30 AU from the Sun, assuming that the average solar wind speed is constant over this distance at approximately 400 km/sec
Radial gradients and anisotropies of cosmic rays in the interplanetary medium
Radial gradients and anisotropies of cosmic rays in interplanetary mediu
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