112,324 research outputs found
YIELD BENEFIT OF CORN EVENT MON 863
No full textData from field experiments are used to estimate the yield benefit of corn hybrids containing event MON 863 relative to nontransgenic corn hybrids without corn rootworm control and with a soil insecticide for corn rootworm control. Over typical ranges for corn rootworm population pressure, event MON 863 provides a yield benefit of 9-28% relative to no control and of 1.5-4.5% relative to control with a soil insecticide. For a reasonable range of prices and yields, the value of the event MON 863 yield benefit is 75/ac relative to no control and 12/ac relative to control with a soil insecticide, depending on corn rootworm pressure. Because of the low correlation between yield loss and the root rating difference, a common empirical finding when estimating yield loss with root ratings, the 95% confidence intervals around these averages are quite wide. Though on average, event MON 863 has substantial value, the wide confidence intervals imply that farmers will see a wide variety of actual performance levels in their fields. This uncertainty in the realized yield benefit is not due to any property of event MON 863, but rather due to the inherent randomness in the numerous environmental and agronomic factors determining a corn plant's yield and yield response to corn rootworm larval feeding damage.Crop Production/Industries,
CCD polarimetry as a probe of regions of recent star-formation
No full textChapter 1 of this thesis details the incorporation of a Charged Coupled Device (CCD) detector system with the Durham Imaging Polarimeter. The details include the physical characteristics of the device and the electronics and software associated with the device control and data storage. The introduction of the CCD detector system haa made necessary the inclusion of a super-achromatic half-wave plate in the polarimeter which has an inherent variability in its optic axis. Chapter 2of this work describes fully how suitable corrections for this effect can be made, and derives "first order" results. The CCD performance is examined in comparison with the detector used previously and hence the veracity of the new results is established. Chapter 3 is a relevant summary of the status of the astronomy of the immediate regions of recent star-formation. Chapter 4 describes multicolour polarimetry of NGC2261/R Mon covering the period 1979 to 1986. The data conclusively proves that the polarisation of R Mon must be due to effects close to R Mon (~ 14 astronomical units). This is evident because of the dynamic timescale of the variations of the polarisation of R Mon and the anomalous band of polarisations seen across the head of the nebula. The interpretation presented is an extension of the Elsasser and Staude (1978) method of polarising objects embedded within the confines of a nearly edge-on disk. Detailed polarisations within the main nebula body provide evidence for this extended interpretation and also for an extensive helical magnetic field which may extend into the disk. Also it is seen that R Mon must still be "shrouded" in material preventing light from directly reflecting in the main nebula body. It is not thought that the variations in the region close to R Mon are due to planetary bodies but to accretion from the disk. The results of this re-interpretation of the polarising mechanism are tentatively applied to other similar objects
Differentiation and gene flow among European populations of Leishmania infantum MON-1.
No full textBACKGROUND: Leishmania infantum is the causative agent of visceral and cutaneous leishmaniasis in the Mediterranean region, South America, and China. MON-1 L. infantum is the predominating zymodeme in all endemic regions, both in humans and dogs, the reservoir host. In order to answer important epidemiological questions it is essential to discriminate strains of MON-1. METHODOLOGY/PRINCIPAL FINDINGS: We have used a set of 14 microsatellite markers to analyse 141 strains of L. infantum mainly from Spain, Portugal, and Greece of which 107 strains were typed by MLEE as MON-1. The highly variable microsatellites have the potential to discriminate MON-1 strains from other L. infantum zymodemes and even within MON-1 strains. Model- and distance-based analysis detected a considerable amount of structure within European L. infantum. Two major monophyletic groups-MON-1 and non-MON-1-could be distinguished, with non-MON-1 being more polymorphic. Strains of MON-98, 77, and 108 were always part of the MON-1 group. Among MON-1, three geographically determined and genetically differentiated populations could be identified: (1) Greece; (2) Spain islands-Majorca/Ibiza; (3) mainland Portugal/Spain. All four populations showed a predominantly clonal structure; however, there are indications of occasional recombination events and gene flow even between MON-1 and non-MON-1. Sand fly vectors seem to play an important role in sustaining genetic diversity. No correlation was observed between Leishmania genotypes, host specificity, and clinical manifestation. In the case of relapse/re-infection, only re-infections by a strain with a different MLMT profile can be unequivocally identified, since not all strains have individual MLMT profiles. CONCLUSION: In the present study for the first time several key epidemiological questions could be addressed for the MON-1 zymodeme, because of the high discriminatory power of microsatellite markers, thus creating a basis for further epidemiological investigations
Longstaff (T. G.). — Mon Odyssée montagnarde.
No full textVeyret Paul. Longstaff (T. G.). — Mon Odyssée montagnarde.. In: Revue de géographie alpine, tome 44, n°3, 1956. p. 600
Mon fils fera-t-il du latin ?
No full textCirot Georges. Mon fils fera-t-il du latin ?. In: La revue pédagogique, tome 59, Juillet-Décembre 1911. pp. 321-330
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
Pascal (Pierre) Mon Journal de Russie. T. II: En communisme (1918-1921); T.III: Mon état d'âme (1922-1926) T.IV: Russie 1927 (1927)
No full textPoulat Emile. Pascal (Pierre) Mon Journal de Russie. T. II: En communisme (1918-1921); T.III: Mon état d'âme (1922-1926) T.IV: Russie 1927 (1927). In: Archives de sciences sociales des religions, n°56/2, 1983. p. 291
Exploring how users trust when interacting with a human-machine collaborative system
No full textThe trust a user places in a financial service is the primary condition for this user's membership in this service. This relationship's foundation is where the user entrusts part of their money. With the rise of digitalisation, most of these financial services reveal, behind their digital window, the complex meanderings of collaborations between humans and machines working to deliver this service and the resulting advice. In the specific context of fintech, but more broadly in the context of digital services offering to provide advice based on AI or algorithms, we propose to explore how the mental models and social perceptions that a user can construct on how this service is delivered relate to how trust elaborates.
Through a double study on French fintech Mon Petit Placement's users, we investigate the possible dominant perception of machines or humans (AI score) and its relationship with trust. A first cluster analysis study on 41,542 users attempts to describe four clusters identifiable by their behaviour with the application and their way of progressing with the subscription process. A second quantitative study, in the form of an online survey based on 1,536 participants of the first study, feeds this behavioural analysis with an enrichment around the perception of the predominance of humans or machines and the relationship this may have with users' trust in the service. Finally, the open questions of the survey questionnaire reveal interesting learnings, allowing a better interpretation of the quantitative data.
Both studies helped define four user profiles (Curious, Hesitant, Decided, and Expert), which helped understand behaviours with AI score and Trust. The results demonstrate a correlation between human predominance and trust in service and advice provided. Mon Petit Placement provides advice mainly using video media. In this context, we also observed a significant correlation between the usefulness of utilising videos to deliver advice when this service is perceived as predominantly human. These studies also reveal that, for this kind of service, users expect that a human should at least supervise such advice in a human-machine collaboration setting.
Furthermore, users' mental models reveal that, in such a setting, considering machines as the fruit of humans' work, the latter are those whom one must ultimately trust. This would be a key to developing confidence in the advice or outputs provided by a hybrid intelligence.
Finally, this research paves the way for future research on the perception of Hybrid Intelligence, reflected by a Human-Machine Collaboration or a Joint Cognitive system and its impacts on Trust
Handwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
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