1,575 research outputs found
Impact of anthropogenic disturbances on beetle communities of French Mediterranean coastal dunes
In coastal dunes, influenced by anthropogenic activities such as tourism, it is important to determine the relative influence of environmental factors at different spatial scales to evaluate the sensitivity of local communities to disturbances. We analyzed beetle communities of 14 dunes of the French Mediterranean coast: four in the relatively preserved Camargue area, and ten in the Var department, where tourism is intensive. Beetle communities were studied three times in early spring using sand sampling. Species-environment relationships were evaluated at the regional, landscape and local scale using redundancy analysis (RDA) and variability partitioning. About 28 species were identified, of which 15 were sand-specialist species, which accounted for more than 93% of total abundance. The beetle communities of Camargue were significantly different from those of the Var department owing to the pullulation of a Tenebrionid species (Trachyscelis aphodioides Latr.) in the Var, except for one restored dune where the community was very similar to those of Camargue. Our results showed no longitudinal gradient between the two regions. Local factors (dune height, preservation and disturbance index) significantly explained most of the variation in the dominance of T. aphodioides, while some other local factors were important for other psammophilous species. This study also suggests that dune beetle communities are strongly affected on beaches intensively managed for tourism, but beetles are still abundant in much disturbed sites
Bahasa Indonesia language program impact analysis in the Polytechnic University of the Philippines Manila: a basis for the bahasa Indonesia’s inclusion in the ab English language studies’ and ab literary and cultural studies’ curriculum
The present study aims to know the impact of the Bahasa Indonesia (BIPA) training on enabling the macro skills among the 144 respondents from the Polytechnic University of the Philippines in Sta. Mesa, Manila as well as the perceived benefits of including the language as one of the foreign language courses in the respondents’ curriculum. The researchers used the descriptive research design. The respondents were selected using purposive sampling and the data were gathered through a survey form with 9 questions. Through the grand mean, it was found out that powerpoint presentations were impactful in enabling them to perform reading tasks. Writing paragraphs were impactful for their writing tasks while Listening to lecture and doing dialogues were impactful for enabling them to perform listening and speaking tasks.   Opportunity to work in other South East Asian Countries emerged as the mostly agreed benefit of including Bahasa Indonesia in the curriculum
Efficient solvability of Hamiltonians and limits on the power of some quantum computational models
We consider quantum computational models defined via a Lie-algebraic theory.
In these models, specified initial states are acted on by Lie-algebraic quantum
gates and the expectation values of Lie algebra elements are measured at the
end. We show that these models can be efficiently simulated on a classical
computer in time polynomial in the dimension of the algebra, regardless of the
dimension of the Hilbert space where the algebra acts. Similar results hold for
the computation of the expectation value of operators implemented by a
gate-sequence. We introduce a Lie-algebraic notion of generalized mean-field
Hamiltonians and show that they are efficiently ("exactly") solvable by means
of a Jacobi-like diagonalization method. Our results generalize earlier ones on
fermionic linear optics computation and provide insight into the source of the
power of the conventional model of quantum computation.Comment: 6 pages; no figure
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Enabling community-based metrology for wood-degrading fungi
Background: Lignocellulosic biomass could support a greatly-expanded bioeconomy. Current strategies for using biomass typically rely on single-cell organisms and extensive ancillary equipment to produce precursors for downstream manufacturing processes. Alternative forms of bioproduction based on solid-state fermentation and wood-degrading fungi could enable more direct means of manufacture. However, basic methods for cultivating wood-degrading fungi are often ad hoc and not readily reproducible. Here, we developed standard reference strains, substrates, measurements, and methods sufficient to begin to enable reliable reuse of mycological materials and products in simple laboratory settings.
Results: We show that a widely-available and globally-regularized consumer product (Pringles™) can support the growth of wood-degrading fungi, and that growth on Pringles™-broth can be correlated with growth on media made from a fully-traceable and compositionally characterized substrate (National Institute of Standards and Technology Reference Material 8492 Eastern Cottonwood Whole Biomass Feedstock). We also establish a Relative Extension Unit (REU) framework that is designed to reduce variation in quantification of radial growth measurements. So enabled, we demonstrate that five laboratories were able to compare measurements of wood-fungus performance via a simple radial extension growth rate assay, and that our REU-based approach reduced variation in reported measurements by up to ~ 75%.
Conclusions: Reliable reuse of materials, measures, and methods is necessary to enable distributed bioproduction processes that can be adopted at all scales, from local to industrial. Our community-based measurement methods incentivize practitioners to coordinate the reuse of standard materials, methods, strains, and to share information supporting work with wood-degrading fungi
Conditional random matrix ensembles and the stability of dynamical systems
There has been a long-standing and at times fractious debate whether complex
and large systems can be stable. In ecology, the so-called `diversity-stability
debate' arose because mathematical analyses of ecosystem stability were either
specific to a particular model (leading to results that were not general), or
chosen for mathematical convenience, yielding results unlikely to be meaningful
for any interesting realistic system. May's work, and its subsequent
elaborations, relied upon results from random matrix theory, particularly the
circular law and its extensions, which only apply when the strengths of
interactions between entities in the system are assumed to be independent and
identically distributed (i.i.d.). Other studies have optimistically generalised
from the analysis of very specific systems, in a way that does not hold up to
closer scrutiny. We show here that this debate can be put to rest, once these
two contrasting views have been reconciled --- which is possible in the
statistical framework developed here. Here we use a range of illustrative
examples of dynamical systems to demonstrate that (i) stability probability
cannot be summarily deduced from any single property of the system (e.g. its
diversity), and (ii) our assessment of stability depends on adequately
capturing the details of the systems analysed. Failing to condition on the
structure of dynamical systems will skew our analysis and can, even for very
small systems, result in an unnecessarily pessimistic diagnosis of their
stability
Sistem Informasi Rawat Inap Rumah Sakit Umum Daerah Bima
Hospitalization is essential in Bima Hospital. Inpatient services are service activities to patients in the hospital, occupying a bed for the purposes of observation, visit doctor, administration of fluid and drugs. In the period 2000 through to 2012 Party in particular parts of the hospital inpatient having problems processing of patient data. Search history of patient data, frequent loss of patient data. Cost overruns the process of final payment patient. Another problem faced by the hospital is difficult to make regular monthly report.To overcome the obstacles in the hospitalization, the hospital needs information system to registration patient , the estimated cost of care, loss of medical record patient and can be make report for executive, patients and Kemenkes. With this requirement it needs to make hospitalization information system in the RSUD Bima
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