20,216 research outputs found
From search engine optimisation to search engine marketing management: development of a new area for information systems research
Search Engine Optimisation was a term used by web developers in the late 90s to highlight the importance of increasing a website’s position in search engines’ results. Further development of the Internet in terms of the diversity of its users and uses such as e-commerce, blogging and wikis have highlighted the need for technical staff to work more closely with marketing professionals resulting in a new area of work – Search Engine Marketing Management.
The paper highlights the emerging role of Search Engine Marketing Management as a new and increasingly important area for future information systems researchers and research. Reaching beyond the 'simple' undifferentiated goal of increasing visitors to a website, a mature perspective of marketing is developing - that of realising strategic marketing objectives. The practical contribution of this paper is found in the development of awareness among management roles of the importance and nuances of search engines and the tactics required to harness the benefits of multiple online communication channels within organisational marketing strategy
Apparatus for igniting solid propellants Patent
Solid propellant ignition with hypergolic fluid injected to predetermined portions of propellan
Method of igniting solid propellants Patent
Method for igniting solid propellant rocket motors by injecting hypergolic fluid
Mind Over Matter: A Qualitative Examination of the Coping Resources Used by Women with Cancer
Aim: This exploratory study investigates the coping resources used by six women diagnosed with cancer.
Objective: The purpose of this study was to provide these women with the opportunity to discuss their cancer experiences along with the specific coping methods they found to be helpful throughout their journey.
Methods: The participants, ranging in age from 25 to 63, completed a background questionnaire, followed by either a semi-structured interview (n=3) or an interview via written response (n=3).
Results: Several key coping methods were described as being helpful to these women, and these methods fell into three major categories: intrapersonal, interpersonal, and extrapersonal coping resources. Although each of these resource categories had a direct influence on overall well-being itself, the interpersonal and extrapersonal resources also influenced the intrapersonal category, offering an alternate means by which they could influence overall well-being. These findings highlight the many coping resources used by these women when navigating their cancer journey
Magnetic fields and spiral arms in the galaxy M51
(Abridged) We use new multi-wavelength radio observations, made with the VLA
and Effelsberg telescopes, to study the magnetic field of the nearby galaxy M51
on scales from 200\pc to several \kpc. Interferometric and single dish data
are combined to obtain new maps at \wwav{3}{6} in total and polarized emission,
and earlier \wav{20} data are re-reduced. We compare the spatial distribution
of the radio emission with observations of the neutral gas, derive radio
spectral index and Faraday depolarization maps, and model the large-scale
variation in Faraday rotation in order to deduce the structure of the regular
magnetic field. We find that the \wav{20} emission from the disc is severely
depolarized and that a dominating fraction of the observed polarized emission
at \wav{6} must be due to anisotropic small-scale magnetic fields. Taking this
into account, we derive two components for the regular magnetic field in this
galaxy: the disc is dominated by a combination of azimuthal modes, , but
in the halo only an mode is required to fit the observations. We disuss
how the observed arm-interarm contrast in radio intensities can be reconciled
with evidence for strong gas compression in the spiral shocks. The average
arm--interam contrast, representative of the radii r>2\kpc where the spiral
arms are broader, is not compatible with straightforward compression: lower
arm--interarm contrasts than expected may be due to resolution effects and
\emph{decompression} of the magnetic field as it leaves the arms. We suggest a
simple method to estimate the turbulent scale in the magneto-ionic medium from
the dependence of the standard deviation of the observed Faraday rotation
measure on resolution. We thus obtain an estimate of 50\pc for the size of
the turbulent eddies.Comment: 21 pages, 18 figures (some at lower resolution than submitted
version), accepted for publication in MNRA
Omega time transmissions and receiving requirements
A short history is given of the development of dual VLF time transmission techniques. The theory of time recovery from the relative phase of the dual frequency transmission is presented. The transmission and receiving requirements for cycle identification and cycle ambiguity resolution are described. Finally, an experiment to test the capability of time transmission of the OMEGA system is propose
Geometric approach to Fletcher's ideal penalty function
Original article can be found at: www.springerlink.com Copyright Springer. [Originally produced as UH Technical Report 280, 1993]In this note, we derive a geometric formulation of an ideal penalty function for equality constrained problems. This differentiable penalty function requires no parameter estimation or adjustment, has numerical conditioning similar to that of the target function from which it is constructed, and also has the desirable property that the strict second-order constrained minima of the target function are precisely those strict second-order unconstrained minima of the penalty function which satisfy the constraints. Such a penalty function can be used to establish termination properties for algorithms which avoid ill-conditioned steps. Numerical values for the penalty function and its derivatives can be calculated efficiently using automatic differentiation techniques.Peer reviewe
Thermo-acoustic wave propagation and reflection near the liquid-gas critical point
We study the thermo-acoustic wave propagation and reflection near the
liquid-gas critical point. Specifically, we perform a numerical investigation
of the acoustic responses in a near-critical fluid to thermal perturbations
based on the same setup of a recent ultrasensitive interferometry measurement
in CO2 [Y. Miura et al. Phys. Rev. E 74, 010101(R) (2006)]. The numerical
results agree well with the experimental data. New features regarding the
reflection pattern of thermo-acoustic waves near the critical point under pulse
perturbations are revealed by the proper inclusion of the critically diverging
bulk viscosity.Comment: 14 pages, 4 figures, Accepted by PRE (Rapid Communication
Interpretation of the angular dependence of the de Haas-van Alphen effect in MgB_2
We present detailed results for the amplitude and field dependence of the de
Haas-van Alphen (dHvA) signal arising from the electron-like sheet of
Fermi surface in MgB_2. Our data and analysis show that the dip in dHvA
amplitude when the field is close to the basal plane is caused by a beat
between two very similar dHvA frequencies and not a spin-zero effect as
previously assumed. Our results imply that the Stoner enhancement factors in
MgB_2 are small on both the Sigma and Pi sheets.Comment: 4 pages with figures. Submitted to PR
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