4,818 research outputs found
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The construction of self-dual normal polynomials over GF(2) and their applications to the Massey-Omura algorithm
Gaussian periods are used to locate a normal element of the finite field GF(2e) of odd degree e and an
algorithm is presented for the construction of self-dual normal polynomials over GF(2) for any odd degree.
This gives a new constructive proof of the existence of a self-dual basis for odd degree. The use of such
polynomials in the Massey-Omura multiplier improves the efficiency and decreases the complexity of the
multiplie
All-optical non-demolition measurement of single-hole spin in a quantum-dot molecule
We propose an all-optical scheme to perform a non-demolition measurement of a
single hole spin localized in a quantum-dot molecule. The latter is embedded in
a microcavity and driven by two lasers. This allows to induce Raman transitions
which entangle the spin state with the polarization of the emitted photons. We
find that the measurement can be completed with high fidelity on a timescale of
100 ps, shorter than the typical T2. Furthermore, we show that the scheme can
be used to induce and observe spin oscillations without the need of
time-dependent magnetic fields
Leprosy: with special reference to its occurrence in the Protectorate of Gambia
Central Africa presents the biggest leprosy
problem which the Empire has to face and must face.
The extent of the disease is not yet realised
nor will it be so until thorough and systematic search
be made in the villages in all the colonies. A superficial
count is so inaccurate and misleading as to be
absolutely dangerous.
Vast improvement in treatment has been made
in the last decade and if full advantage of this be taken
the final stamping out of leprosy is only a matter of time.
Supplies of the seeds of Hydnocarpus Wightiana
can now be readily procured and grow well in these tropical
possessions. In five years after planting,an adequate
supply of the drug would exist locally.
The contagiousness of leprosy is not m,Ftter of
conjecture, but of fact, and if this be realised, then a
proper combating of the scourge is only possible if some
form of segregation be used.
Compulsory segregation at present would do no
good but rather infinite harm.
Segregation must be undertaken voluntarily by
the natives, commencing firstly with villages and then
with groups of villages. The natives would consent to
do this, as they do realise the danger of the disease and
understand its spread
New Characteristics of Rural Women’s Economic Participation in Shaanxi, China
China’s large scale migration, urbanization, accompanying its rural land circulation for modern agriculture, rural women’s economic situation was enormously affected but little noticed. To explore this, the study examines rural women’s challenges and potential in economic participation in Shaanxi province through a survey of 356 rural women in three areas of Shaanxi with different developing characteristics. The primary data allows a more in depth and systematic analysis of the current situation of rural women. Results indicate that the economic participation of rural women in China presents some common and different challenges. Their own low educational attainment and their care-provider role are two common challenges. Meanwhile, their economic participation illustrates a geographical characteristic, which is largely restricted by the land policy, regional economic development
Similarity of nuclear structure in 132Sn and 208Pb regions: proton-neutron multiplets
Starting from the striking similarity of proton-neutron multiplets in 134Sb
and 210Bi, we perform a shell-model study of nuclei with two additional protons
or neutrons to find out to what extent this analogy persists. We employ
effective interactions derived from the CD-Bonn nucleon-nucleon potential
renormalized by use of the V-low-k approach. The calculated results for 136Sb,
212Bi, 136I, and 212At are in very good agreement with the available
experimental data. The similarity between 132Sn and 208Pb regions is discussed
in connection with the effective interaction, emphasizing the role of core
polarization effects.Comment: 4 pages, 3 figures, 2 table
Evaluation of enzyme immunoassays in the diagnosis of camel (Camelus dromedarius) trypanosomiasis:a preliminary investigation
Three enzyme immunoassays were used for the serodiagnosis of Trypanosoma evansi in camels in the Sudan in order to evaluate their ability to discriminate between infected and non-infected animals. Two assays were used for the detection of trypanosomal antibodies, one using specific anti-camel IgG conjugate and another using a non-specific Protein A conjugate. The third assay detected the presence of trypanosomal antigens using anti-T. evansi antibodies in a double antibody sandwich assay. Inspection of the frequency distribution of assay results suggested that the ELISA for circulating trypanosomal antibodies using specific antisera and the ELISA for circulating antigens can distinguish between non-infected camels and infected camels exhibiting patent infections or not. The ELISA using Protein A conjugate to bind non-specifically to camel immunoglobulin did not appear to discriminate between infected and non-infected animals
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Developing professionalism in new IT graduates? Who needs it?
A new graduate may require a period of ‘acclimatisation’ through a process of ‘developing their professionalism’ to fit into their work environment. The e-Skills UK Technology Counts Insights 2010 report suggests that 110,500 new entrants a year are required to fill IT & Telecoms professional job roles, with 20,800 coming from education (predominantly graduate level and higher). However, 43% of recruiters were reporting a lack of suitable candidates for IT & Telecoms posts where growing importance will be placed on relationship management, business process analysis and design, project and programme management. IT & Telecoms professionals are increasingly expected to be multi-skilled, with sophisticated business and interpersonal skills as well as technical competence. As the report also says: ‘UK growth will continue to be primarily in high-value roles with an increasing need for customer and business-oriented skills as well as sophisticated technical competencies.’
The diverse needs and requirements of the IT sector, as specified by various employer groups and professional bodies including BCS, IET, eSkills, the CBI and the SFIA Foundation, are discussed. According to the CBI, ‘62% of entrants to the IT sector need to draw on managerial and professional business skills almost immediately.’ For organisations to succeed, their IT graduate recruits must supplement their IT skills with managerial and professional business skills. Well considered CPD will ensure that recent graduates can enhance their ‘academic’ skills with the necessary work-based skills for the benefit of both themselves and their new employer. The focus of the improvement will balance the student-centred needs for development and the engaging employer’s commercial needs
Nutritional management of individuals with Huntington’s disease: nutritional guidelines
The delivery of good nutritional care is a fundamental element of the management of individuals with Huntington’s disease and all patients with Huntington’s disease will, at some time, need dietary intervention because of the sequela of the disease; yet there are no European nutritional guidelines. The European Huntington’s Disease Network Standards of Care Dietitians Group has brought together expert dietitians from across Europe to produce nutritional guidelines to improve the nutritional management of individuals with Huntington’s disease. The guidelines were developed to promote optimal nutritional screening, assessment and management of individuals throughout all stages of the disease, with the aim of improving the standard of nutritional care delivered. Literature was systematically searched in an attempt to ensure that the recommendations are based on sound evidence and where evidence is lacking, specific guidance is based on consensus expert dietetic opinion. The provision of nutritional care varies widely between countries. Implementation of these nutritional guidelines across Europe should improve the quality of nutritional care delivered to individuals with Huntington’s disease
First Order Premelting Transition of Vortex Lattices
Vortex lattices in the high temperature superconductors undergo a first order
phase transition which has thus far been regarded as melting from a solid to a
liquid. We point out an alternative possibility of a two step process in which
there is a first order transition from an ordinary vortex lattice to a soft
vortex solid followed by another first order melting transition from the soft
vortex solid to a vortex liquid. We focus on the first step. This premelting
transition is induced by vacancy and interstitial vortex lines. We obtain good
agreement with the experimental transition temperature versus field, latent
heat, and magnetization jumps for YBCO and BSCCO.Comment: revised version replaces 9705092, 5 pages, Latex, 2 postscript
figures, defect line wandering is included, 2 step melting is propose
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