1,762 research outputs found
The drug problem - this is our fight
IT IS shocking to hear thai last year, the National Anti-Drug Agency recorded a total of 30,847 drug addicts compared to 26,668 in 2015. The number of new addicts increased from 20,281 to 22,925.It is estimated that currently Malaysia produces an average of 70 new drug addicts daily, and the figure does not
include the "dark figures"
JWST observations of stellar occultations by solar system bodies and rings
In this paper we investigate the opportunities provided by the James Webb
Space Telescope (JWST) for significant scientific advances in the study of
solar system bodies and rings using stellar occultations. The strengths and
weaknesses of the stellar occultation technique are evaluated in light of
JWST's unique capabilities. We identify several possible JWST occultation
events by minor bodies and rings, and evaluate their potential scientific
value. These predictions depend critically on accurate a priori knowledge of
the orbit of JWST near the Sun-Earth Lagrange-point 2 (L2). We also explore the
possibility of serendipitous stellar occultations by very small minor bodies as
a by-product of other JWST observing programs. Finally, to optimize the
potential scientific return of stellar occultation observations, we identify
several characteristics of JWST's orbit and instrumentation that should be
taken into account during JWST's development.Comment: This paper is one of a series for a special issue on Solar System
observations with JWST in PASP. Accepted 2-Oct-2015. Preprint 30 pages, 5
tables, 8 figure
Four Poynting Theorems
The Poynting vector is an invaluable tool for analysing electromagnetic
problems. However, even a rigorous stress-energy tensor approach can still
leave us with the question: is it best defined as \Vec{E} \cross \Vec{H} or
as \Vec{D} \cross \Vec{B}? Typical electromagnetic treatments provide yet
another perspective: they regard \Vec{E} \cross \Vec{B} as the appropriate
definition, because \Vec{E} and \Vec{B} are taken to be the fundamental
electromagnetic fields. The astute reader will even notice the fourth possible
combination of fields: i.e. \Vec{D} \cross \Vec{H}. Faced with this diverse
selection, we have decided to treat each possible flux vector on its merits,
deriving its associated energy continuity equation but applying minimal
restrictions to the allowed host media. We then discuss each form, and how it
represents the response of the medium. Finally, we derive a propagation
equation for each flux vector using a directional fields approach; a useful
result which enables further interpretation of each flux and its interaction
with the medium.Comment: 8 pages. Updated slightly from EJP versio
Public perceptions of cancer: a qualitative study of the balance of positive and negative beliefs
Objectives: Cancer's insidious onset and potentially devastating outcomes have made it one of the most feared diseases of the 20th century. However, advances in early diagnosis and treatment mean that death rates are declining, and there are more than 30 million cancer survivors worldwide. This might be expected to result in more sanguine attitudes to the disease. The present study used a qualitative methodology to provide an in-depth exploration of attitudes to cancer and describes the balance of negative and positive perspectives.
Design: A qualitative study using semistructured interviews with thematic analysis.
Setting: A university in London, UK.
Participants: 30 participants (23–73 years), never themselves diagnosed with cancer.
Results: Accounts of cancer consistently incorporated negative and positive views. In almost all respondents, the first response identified fear, trauma or death. However, this was followed—sometimes within the same sentence—by acknowledgement that improvements in treatment mean that many patients can survive cancer and may even resume a normal life. Some respondents spontaneously reflected on the contradictions, describing their first response as a ‘gut feeling’ and the second as a more rational appraisal—albeit one they struggled to believe. Others switched perspective without apparent awareness.
Conclusions: People appear to be ‘in two minds’ about cancer. A rapid, intuitive sense of dread and imminent death coexists with a deliberative, rational recognition that cancer can be a manageable, or even curable, disease. Recognising cancer's public image could help in the design of effective cancer control messages
Observational Cosmology in Macroscopic Gravity
We discuss the construction of cosmological models within the framework of
Macroscopic Gravity (MG), which is a theory that models the effects of
averaging the geometry of space-time on large scales. We find new exact
spatially homogeneous and isotropic FLRW solutions to the MG field equations,
and investigate large-scale perturbations around them. We find that any
inhomogeneous perturbations to the averaged geometry are severely restricted,
but that possible anisotropies in the correlation tensor can have dramatic
consequences for the measurement of distances. These calculations are a first
step within the MG approach toward developing averaged cosmological models to a
point where they can be used to interpret real cosmological data, and hence to
provide a working alternative to the "concordance" LCDM model.Comment: 22 page
Civil Non-Family Cases Filed in the Supreme Court of BC: Research Results and Lessons Learned
This report presents the findings and lessons learned from the implementation of a research project that was intended to study the trajectory, characteristics and outcomes of BC Supreme Court civil non-family cases that appeared to lack resolution through court processes. The study also planned to assess the level of satisfaction of claimants in these cases and the ancillary costs or other impacts that are experienced by claimants for whom access to timely civil legal processes has been a problem
Chiral behavior of the B(s,d)-Bbar(s,d) mixing amplitude in the Standard Model and beyond
We compute the chiral logarithmic corrections to the Bd and Bs mixing
amplitudes in the Standard Model and beyond. We then investigate the impact of
the inclusion of the lowest-lying scalar heavy-light states to the decay
constants and bag-parameters and show that this does not modify the pion chiral
logarithms, but it does produce corrections which are competitive in size with
the K- and eta-meson chiral logarithms. This conclusion is highly relevant to
the lattice studies since the pion chiral logarithms represent the most
important effect in guiding the chiral extrapolations of the lattice data for
these quantities. Also important is to stress that the pion chiral logarithmic
corrections are useful in guiding those extrapolations as long as Mpi << Delta,
where Delta is the mass gap between the scalar and pseudoscalar heavy-light
mesons.Comment: 16 pages, 5 figures (published version
As assessment of the Competition Commission Report and subsequent outcomes
Following the Office of Fair Trading's review of the British deregulated bus market as a whole in 2009, the issues raised were referred to the Competition Commission. Its final report was published in December 2011. Subsequently, the House of Commons Transport Committee carried out an enquiry into the Commission's report, and reactions to it by the operating industry, user groups, and other bodies, which was published in September 2012. A number of major issues have been raised, including the extent to which price competition may be effective, the appropriate rate of return on capital that would be expected within the industry (and appropriate actions where this is excessive in practice), and industry structure. The importance of competition per se, as distinct from attributes of direct concern to users (such as reliability, frequency, and fares) has also been debated. This paper reviews the issues raised, and outcomes to date, in the light of further evidence on the industry's performance. It is demonstrated similar rates of return could be attained through very different operating strategies, which in turn have very different implications for changes in consumer surplus. The alternative uses made of such profits (for example through reinvestment) may also have markedly different impacts effects on users. Rather than focussing on the dangers of excessive rates of return on capital, the outcomes for service users should be the main issue
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