2,245 research outputs found

    Sampling Technique for Larvae of the Alfalfa Snout Beetle, \u3ci\u3eOtiorhynchus Ligustici\u3c/i\u3e (Coleoptera: Curculionidae)

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    This paper presents a sampling procedure for estimating larval populations of the alfalfa snout beetle, Otiorhynchus ligustici. The method is based on counts of the larvae taken in 16 x 16 cm quadrats of soil during early fall when the grubs are in their final two instars and feeding just below the crowns of the plant. Analysis of sampling variability showed that 200 quadrats per field are necessary to obtain adequate precision for intensive population studies but that 50 quadrats are sufficient for survey work. The pattern of counts was overdispersed but conformed to the negative binomial distribution

    Cosmic Ray Neon, Wolf-Rayet Stars, and the Origin of GCRs

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    MATHEMATICAL OPERATIONS USED IN ORDINARY OCCUPATIONS AND SUGGESTIONS FOR INCORPORATING THEM IN HIGH-SCHOOL MATHEMATICS

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    The purpose of this study is to determine the type problems in algebra, geometry, and general mathematics that are most frequently used by high school graduates. The applicability of these mathematical operations to ordinary problems of daily life is to be decided by means of a survey among high school graduates who have had courses in algebra and geometry. An enumeration and analysis of the type problems that are most used by these graduates will give a much better conception of what should be taught in a general mathematics course. This investigation proposes to apply the criterion of usability in the determination of what type problems are best suited to a general mathematics course for secondary schools

    Galactic cosmic ray neon isotopic abundances measured on ACE

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    Germination responses of a dry sclerophyll forest soil-stored seedbank to fire related cues

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    Fire is an integral component of many ecosystems worldwide. Many plant species require fire-related cues, primarily heat and smoke, to trigger germination. Despite the importance of this process, the responses of many Australian species to these cues are unknown. Without this knowledge fire management strategies may be developed that are inappropriate for individual species and vegetation communities. In this study we examined the responses of a dry sclerophyll forest seed bank to heat and smoke germination cues. Analysis was possible for 48 taxa within the soil seedbank with 34 of these showing a response to one or both of the germination cues. 10 species responded to the heat treatment, 11 species responded to the smoke treatment and 13 species responded to both the heat and smoke treatments. Germination cues acted independently for all species considered. Results in this study were consistent with published reports for most species, although some differences were seen at the species and genus level. The study highlights the importance of fire-related cues in enhancing germination of a large proportion of the species occurring in dry sclerophyll forests

    Is That Your Final Decision? Multi-Stage Profiling, Selective Effects, and Article 22 of the GDPR

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    Provisions in many data protection laws require a legal basis, or at the very least safeguards, for significant, solely automated decisions; Article 22 of the GDPR is the most notable. - Little attention has been paid to Article 22 in light of decision-making processes with multiple stages, potentially both manual and automated, and which together might impact upon decision subjects in different ways. - Using stylised examples grounded in real-world systems, we raise five distinct complications relating to interpreting Article 22 in the context of such multi-stage profiling systems. - These are: the potential for selective automation on subsets of data subjects despite generally adequate human input; the ambiguity around where to locate the decision itself; whether 'significance' should be interpreted in terms of any potential effects or only selectively in terms of realised effects; the potential for upstream automation processes to foreclose downstream outcomes despite human input; and that a focus on the final step may distract from the status and importance of upstream processes. - We argue that the nature of these challenges will make it difficult for courts or regulators to distil a set of clear, fair and consistent interpretations for many realistic contexts
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