Search results for "Nuisance"
showing 10 items of 17 documents
Mosquito Magnet ® traps as a potential means of monitoring blackflies of medical and veterinary importance
2021
Mosquito Magnet® traps, deployed in widespread parts of England as part of nationwide mosquito surveillance projects, also caught blackflies. As many as 1242 blackflies were caught in a trapping session lasting 4 days. Principal among the species caught were Simulium equinum, Simulium lineatum and Simulium ornatum s.l. As S. ornatum s.l. is a vector that transmits Onchocerca linealis to cattle and S. equinum is responsible for dermatitis ('sweet itch') in cattle and horses, it is suggested that Mosquito Magnet® traps could be used to monitor and partially control these pests, as well as nuisance anthropophilic blackflies such as Simulium posticatum that can cause simuliidosis in southern En…
The requirement for the inclusion of formulation efficacy trials in pesticide preregistration evaluations
2008
BACKGROUND: Optimization of biocide use could serve to reduce the risks of biocides on human health. To optimize the risk/benefit ratio, it is important to develop procedures for evaluating the efficacy of biocide formulations. The authors examined the effectiveness of ten pyrethroid insecticide aerosol formulations registered for the household control of flies. Tests were performed using adult Musca domestica L. Knockdown effects and mortality were measured in a test chamber using the manufacturer's recommended discharge time. RESULTS: The knockdown effect varied greatly between aerosols of similar composition. The knockdown 15 min post-treatment was 66–98% for flies placed 120 cm above fl…
On the moments of Cochran's Q statistic under the null hypothesis, with application to the meta-analysis of risk difference.
2011
W. G. Cochran's Q statistic was introduced in 1937 to test for equality of means under heteroscedasticity. Today, the use of Q is widespread in tests for homogeneity of effects in meta-analysis, but often these effects (such as risk differences and odds ratios) are not normally distributed. It is common to assume that Q follows a chi-square distribution, but it has long been known that this asymptotic distribution for Q is not accurate for moderate sample sizes. In this paper, the effect and weight for an individual study may depend on two parameters: the effect and a nuisance parameter. We present expansions for the first two moments of Q without any normality assumptions. Our expansions w…
Efficacy of an insecticide paint against malaria vectors and nuisance in West Africa--part 2: field evaluation.
2010
Abstract Background Widespread resistance of the main malaria vector Anopheles gambiae to pyrethroids reported in many African countries and operational drawbacks to current IRS methods suggest the convenience of exploring new products and approaches for vector control. Insecticide paint Inesfly 5A IGR™, containing two organophosphates (OPs), chlorpyrifos and diazinon, and one insect growth regulator (IGR), pyriproxyfen, was tested in Benin, West Africa, for 12 months. Methods Field trials were conducted in six experimental huts that were randomly allocated to one or two layers of insecticide at 1 Kg/6 m2 or control. Evaluations included: (i) early mosquito collection, (ii) mosquito release…
Multivariate equivalence tests for use in pharmaceutical development.
2014
Statistical equivalence analyses are well-established parts of many studies in the biomedical sciences. Also in pharmaceutical development and manufacturing equivalence testing methods are required in order to statistically establish similarities between machines, process components, or complete processes. This article presents a choice of multivariate equivalence testing procedures for normally distributed data as generalizations of existing univariate methods. In all derived methods, variability is interpreted as nuisance parameter. The use of the proposed methods in pharmaceutical development is demonstrated with a comparative analysis of dissolution profiles.
La tutela della salubrità dell'aria e della persona in civil Law e in common Law
2022
The essay deals with safeguarding the right to a healthy environment in the Italian and English systems, especially for the individuals affected by emissions that corrupt the air quality interfering with their private and family life. The study focuses on the injunction, as a non-compensatory remedy, actionable before the English courts by claimants seeking the decontamination of the polluted areas. The insight into the foreign environmental law will provide a new perspective on the Italian one that (as the European Court of Human Rights stated in the Cordella case) does not secure everyone an effective remedy to the violation of their environmental human right.
Immissioni
2012
Alla soluzione dei problemi nascenti dal conflitto fra forme di utilizzazione reciprocamente incompatibili di proprietà vicine è preordinato, nel nostro ordinamento, l’art. 844 c.c. La norma trova collocazione nell’ambito dello statuto proprietario, ed in particolare tra le disposizioni sulla proprietà fondiaria di cui al Capo II del Titolo II del Libro III del codice civile. Oggetto della presente ricerca è costituito, per un verso, dai criteri indicati dalla norma per la soluzione del conflitto fra usi fondiari incompatibili e, per altro verso, dall’individuazione dell’apparato rimediale attribuito al titolare del fondo offeso. Questa prospettiva trova giustificazione nel fatto che il tem…
Testing with a nuisance parameter present only under the alternative: a score-based approach with application to segmented modelling
2016
ABSTRACTWe introduce a score-type statistic to test for a non-zero regression coefficient when the relevant term involves a nuisance parameter present only under the alternative. Despite the non-regularity and complexity of the problem and unlike the previous approaches, the proposed test statistic does not require the nuisance to be estimated. It is simple to implement by relying on the conventional distributions, such as Normal or t, and it justified in the setting of probabilistic coherence. We focus on testing for the existence of a breakpoint in segmented regression, and illustrate the methodology with an analysis on data of DNA copy number aberrations and gene expression profiles from…
Bayesian measures of surprise for outlier detection
2003
From a Bayesian point of view, testing whether an observation is an outlier is usually reduced to a testing problem concerning a parameter of a contaminating distribution. This requires elicitation of both (i) the contaminating distribution that generates the outlier and (ii) prior distributions on its parameters. However, very little information is typically available about how the possible outlier could have been generated. Thus easy, preliminary checks in which these assessments can often be avoided may prove useful. Several such measures of surprise are derived for outlier detection in normal models. Results are applied to several examples. Default Bayes factors, where the contaminating…
La fabrique de l’éclairage public. De la lumière planifiée aux territorialités nocturnes.
2018
International audience; L’éclairage urbain, s’il a amélioré la qualité de vie dans nos sociétés, n’est pas exempt de coûts écologiques et sanitaires que, depuis une trentaine d’années, plusieurs champs scientifiques relayés par des mouvements associatifs et politiques ont mis en évidence. À telle enseigne qu’en France, suite au Grenelle de l’Environnement, l’éclairage urbain est désormais appréhendé en termes de nuisance, voire de pollution. Ce changement de qualification signe le passage d’une approche fonctionnaliste de l’éclairage public définie par les professionnels élus et non élus de la fabrique de la ville à une approche sociotechnique de l'éclairage qui donne sa place aux usagers d…