601,723 research outputs found
New public management and employee share ownership plan in Fiji’s public sector
This article provides insights into the implementation of new public management (NPM) practices in Fiji Telecom and whether the use of the employee share ownership scheme was helpful in the organisational change process. The NPM practices were influenced by the World Bank and International Monetary Fund who were the lenders to Fiji government. The adoption of NPM practices was part of a political, economic and public sector reforms introduced after 1989. The paper discusses the background and obstacles of the reform and how the employee share ownership scheme practice at a privatised Telecom Company assists employees to assimilate commercial business norms. The authors finally make recommendations for policy-makers in Fiji and other developing nations
First Constraints on the Ultra-High Energy Neutrino Flux from a Prototype Station of the Askaryan Radio Array
The Askaryan Radio Array (ARA) is an ultra-high energy ( eV) cosmic
neutrino detector in phased construction near the South Pole. ARA searches for
radio Cherenkov emission from particle cascades induced by neutrino
interactions in the ice using radio frequency antennas ( MHz)
deployed at a design depth of 200 m in the Antarctic ice. A prototype ARA
Testbed station was deployed at m depth in the 2010-2011 season and
the first three full ARA stations were deployed in the 2011-2012 and 2012-2013
seasons. We present the first neutrino search with ARA using data taken in 2011
and 2012 with the ARA Testbed and the resulting constraints on the neutrino
flux from eV.Comment: 26 pages, 15 figures. Since first revision, added section on
systematic uncertainties, updated limits and uncertainty band with
improvements to simulation, added appendix describing ray tracing algorithm.
Final revision includes a section on cosmic ray backgrounds. Published in
Astropart. Phys.
Reconstruction of graded groupoids from graded Steinberg algebras
We show how to reconstruct a graded ample Hausdorff groupoid with topologically principal
neutrally-graded component from the ring structure of its graded Steinberg algebra over
any commutative integral domain with 1, together with the embedding of the canonical
abelian subring of functions supported on the unit space. We deduce that
diagonal-preserving ring isomorphism of Leavitt path algebras implies -isomorphism
of -algebras for graphs and in which every cycle has an exit.
This is a joint work with Joan Bosa, Roozbeh Hazrat and Aidan Sims.Universidad de Málaga. Campus de Excelencia internacional Andalucía Tec
Strict \infty-groupoids are Grothendieck \infty-groupoids
We show that there exists a canonical functor from the category of strict
\infty-groupoids to the category of Grothendieck \infty-groupoids and that this
functor is fully faithful. As a main ingredient, we prove that free strict
\infty-groupoids on a globular pasting scheme are weakly contractible.Comment: 22 pages, v2: revised according to referee's comments, in particular:
new organization of the pape
SWATH Differential Abundance Proteomics and Cellular Assays Show In Vitro Anticancer Activity of Arachidonic Acid- and Docosahexaenoic Acid-Based Monoacylglycerols in HT-29 Colorectal Cancer Cells
Colorectal cancer (CRC) is one of the most common and mortal types of cancer. There is increasing evidence that some polyunsaturated fatty acids (PUFAs) exercise specific inhibitory actions on cancer cells through different mechanisms, as a previous study on CRC cells demonstrated for two very long-chain PUFA. These were docosahexaenoic acid (DHA, 22:6n3) and arachidonic acid (ARA, 20:4n6) in the free fatty acid (FFA) form. In this work, similar design and technology have been used to investigate the actions of both DHA and ARA as monoacylglycerol (MAG) molecules, and results have been compared with those obtained using the corresponding FFA. Cell assays revealed that ARA- and DHA-MAG exercised dose- and time-dependent antiproliferative actions, with DHA-MAG acting on cancer cells more efficiently than ARA-MAG. Sequential window acquisition of all theoretical mass spectra (SWATH)—mass spectrometry massive quantitative proteomics, validated by parallel reaction monitoring and followed by pathway analysis, revealed that DHA-MAG had a massive effect in the proteasome complex, while the ARA-MAG main effect was related to DNA replication. Prostaglandin synthesis also resulted as inhibited by DHA-MAG. Results clearly demonstrated the ability of both ARA- and DHA-MAG to induce cell death in colon cancer cells, which suggests a direct relationship between chemical structure and antitumoral actions
An Analysis of Reported Dangerous Incidents, Exposures, and Near Misses amongst Army Soldiers
Occupational health and safety incidents occurring in the military context are of great concern to personnel and commanders. Incidents such as “dangerous incidents”, “exposures”, and “near misses” (as distinct from injuries, illnesses, and fatalities) indicate serious health and safety risks faced by military personnel, even if they do not cause immediate harm. These risks may give rise to harm in the future, if not adequately addressed, and in some cases the incidents may cause latent harm. The purpose of this study was to ascertain the rates and patterns of incidents of these types reported by full time (ARA) and part time (ARES) Australian Army personnel. A retrospective cohort study was performed using self-reported incident data from the Workplace Health, Safety, Compensation and Reporting (WHSCAR) database over a two-year period. Data were analysed descriptively. Of 3791 such incidents, 3636 (96 percent) occurred in ARA and 155 (4 percent) in ARES personnel, somewhat consistent with the proportions of total army person-years served in each (ARA 93 percent; ARES 7 percent). In ARA, 84 percent of these incident types were exposures, 14 percent near misses, and 2 percent dangerous incidents. In ARES, 55 percent of incidents were exposures, 38 percent near misses, and 7 percent dangerous incidents. Soldiers at the rank of ‘private’ experienced the highest rates of these incident types, in both ARA and ARES. Driving gave rise to more near misses than any other activity, in both populations. Exposures to chemicals and sounds were more common in the ARA than ARES. The ARES reported higher proportions of vehicle near misses and multiple mechanism dangerous incidents than the ARA. The findings of this study can usefully inform development of risk mitigation strategies for dangerous incidents, exposures, and near misses in army personnel
Cohomological dimension and arithmetical rank of some determinantal ideals
Let be a non-generic matrix of linear forms in a
polynomial ring. For large classes of such matrices, we compute the
cohomological dimension (cd) and the arithmetical rank (ara) of the ideal
generated by the -minors of . Over an algebraically closed
field, any -matrix of linear forms can be written in the
Kronecker-Weierstrass normal form, as a concatenation of scroll, Jordan and
nilpotent blocks. B\u{a}descu and Valla computed when
is a concatenation of scroll blocks. In this case we compute
and extend these results to concatenations of Jordan
blocks. Eventually we compute and
in an interesting mixed case, when contains both Jordan and scroll blocks.
In all cases we show that is less than the arithmetical
rank of the determinantal ideal of a generic matrix
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