The life project

This conference paper is available to download from the publisher’s website at the link below.The Life Project explores issues of psychological projection into technology by diving into the convoluted relationship between practical purpose and emotional attachment, through both the creative act of designing and making robot entities with artificial emotions, and the social act of engaging with them. This process explores the concept of body representation through a multiidentity in virtual and physical blended space. In a lesser sense, it also suggests a future world of collaboration between physical and virtual forms, enabled by new forms of representation in blended worlds

Determinants of project success

The interactions of numerous project characteristics, with particular reference to project performance, were studied. Determinants of success are identified along with the accompanying implications for client organization, parent organization, project organization, and future research. Variables are selected which are found to have the greatest impact on project outcome, and the methodology and analytic techniques to be employed in identification of those variables are discussed

Recruiting hard-to-reach populations to physical activity studies : evidence and experiences

Most researchers who are conducting research with a public health focus face difficulties in recruiting the segments of the population that they really want to reach. This symposium presented evidence and experiences on recruiting participants to physical activity research, including both epidemiological and intervention based studies. Results from a systematic review of recruitment strategies suggested that we know little about how best to recruit and highlighted the need for researchers to report this in more detail, including metrics of reach into the target population such as number, proportion, and representativeness of participants. Specific strategies used to optimise responses to a population-based mail survey were presented such as study promotion, survey design, multiple mailings, and personal engagement. Finally, using place based recruiting via schools or places of worship to target ethnic minority youth were discussed. Overall the symposium presenters suggested that we need to learn more about how best to recruit participants, in particular those typically under-represented, and that researchers need to apportion a similar amount of planning effort to their recruitment strategies as they do the their research design. Finally we made a plea for researchers to report their recruitment processes in detail

The cluster environments of radio loud quasars

We have carried out multi-colour imaging of the fields of a statistically complete sample of low-frequency selected radio loud quasars at 0.6<z<1.1, in order to determine the characteristics of their environments. The largest radio sources are located in the field, and smaller steep-spectrum sources are more likely to be found in richer environments, from compact groups through to clusters. This radio-based selection (including source size) of high redshift groups and clusters is a highly efficient method of detecting rich environments at these redshifts. Although our single filter clustering measures agree with those of other workers, we show that these statistics cannot be used reliably on fields individually, colour information is required for this.Comment: 5 pages, 3 figures, contribution to "Tracing Cosmic Evolution with Galaxy Clusters" (Sesto 2001), ASP Conference Serie

Kinetic cross coupling between non-conserved and conserved fields in phase field models

We present a phase field model for isothermal transformations of two component alloys that includes Onsager kinetic cross coupling between the non-conserved phase field and the conserved concentration field. We also provide the reduction of the phase field model to the corresponding macroscopic description of the free boundary problem. The reduction is given in a general form. Additionally we use an explicit example of a phase field model and check that the reduced macroscopic description, in the range of its applicability, is in excellent agreement with direct phase field simulations. The relevance of the newly introduced terms to solute trapping is also discussed

Cooperative program for design, fabrication, and testing of graphite/epoxy composite helicopter shafting

The fabrication of UH-1 helicopter tail rotor drive shafts from graphite/epoxy composite materials is discussed. Procedures for eliminating wrinkles caused by lack of precure compaction are described. The development of the adhesive bond between aluminum end couplings and the composite tube is analyzed. Performance tests to validate the superiority of the composite materials are reported

Observations of Energetic Electrons (E ≳ 200 keV) in the Earth's Magnetotail: Plasma Sheet and Fireball Observations

With the California Institute of Technology electron/isotope spectrometer (EIS) aboard the earth-orbiting spacecraft Imp 8, intense energetic electron events (E ≳ 200 keV) have been observed at ∼30 R_E in the magnetotail on 13 of 28 magnetotail passes. In one class of events, peak absolute intensities j(E ≳ 200 keV) = 10^³–10^4 el (cm^² s sr)^(−1) are detected; the differential energy spectra for these events are very steep, with power law indices of ∼7. For this class of observations, symmetric electron pitch angle distributions are detected with the presence of little or no unidirectional streaming, a finding consistent with quasi-trapped motion of the particles. Concurrent observations with other instrumentation on the same spacecraft indicate that the local magnetic fields possess northward components while simultaneous plasma (50 eV ≤ E ≤ 45 keV) data show bulk flow speeds of a few hundred kilometers per second or less, with intense plasma heating ordinarily occurring. A second distinct class of events corresponds to lower average absolute electron intensities (E ≳ 200 keV), typically harder electron energy spectra, and strong intermittent field-aligned (and tailward) unidirectional streaming of the energetic electrons. During periods when this class of events is observed in the plasma sheet, strong southward components are found in the local magnetic fields, and large tailward bulk plasma flow has been reported (with tailward jetting in excess of 1000 km s^(−1) in certain cases). The second class of events is consistent with energetic electron motion on essentially open field lines. These streaming events are found to be associated with apparent localized acceleration regions in the magnetotail

Radial diffusion in Jupiter's magnetosphere

Radial phase space density profiles for equatorially mirroring particles are computed from the data of the University of Iowa packages on Pioneer 10. The profiles are only consistent with radial diffusion subject to nonadiabatic losses. It is suggested that these losses are due to pitch angle scattering by whistler turbulence

The magnetopause electron layer along the distant magnetotail

An energetic electron layer is found immediately adjacent to, and outside of, the magnetopause surface along the distant magnetotail (−40 ≲ X_(SM) ≲ −15 R_E). The layer has been detected using Caltech instrumentation aboard the earth-orbiting spacecraft IMP-8 and is observed for electrons with energies E ≳ 200 keV. The present study shows that such electrons form a layer ∼ 3 R_E thick and are strongly streaming in a well-ordered pattern, especially along the dusk magnetopause. The energy dissipation implied by the persistent flow may be a direct indication of nearly continuous magnetic merging at or near the magnetopause