Search results for "interaction [photon p]"

Decentralized classification in societies of autonomous and heterogenous robots

2011

This paper addresses the classification problem for a set of autonomous robots that interact with each other. The objective is to classify agents that “behave” in “different way”, due to their own physical dynamics or to the interaction protocol they are obeying to, as belonging to different “species”. This paper describes a technique that allows a decentralized classification system to be built in a systematic way, once the hybrid models describing the behavior of the different species are given. This technique is based on a decentralized identification mechanism, by which every agent classifies its neighbors using only local information. By endowing every agent with such a local classifie…

Data from: Symbiotic polydnavirus and venom reveal parasitoid to its hyperparasitoids

2018

Symbiotic relationships may provide organisms with key innovations that aid in the establishment of new niches. For example, during oviposition, some species of parasitoid wasps, whose larvae develop inside the bodies of other insects, inject polydnaviruses into their hosts. These symbiotic viruses disrupt host immune responses, allowing the parasitoid’s progeny to survive. Here, we show that symbiotic polydnaviruses also have a downside to the parasitoid’s progeny by initiating a multi-trophic chain of interactions that reveals the parasitoid larvae to their enemies. These enemies are hyperparasitoids that use the parasitoid progeny as host for their own offspring. We found that the virus …

Biotic homogenisation in bird communities leads to large-scale changes in species associations

2020

AbstractAimThe impact of global change on biodiversity is commonly assessed in terms of changes in species distributions, community richness and community composition. Whether and how much associations between species, i.e. the degree of correlation in their spatial co-occurrence, are also changing is much less documented and mostly limited to local studies of ecological networks. In this study, we quantify changes in large-scale patterns of species associations in bird communities in relation to changes in species composition.LocationFrance.Time period2001-2017.Major taxa studiedCommon breeding birds.MethodsWe use network approaches to build three community-aggregated indices reflecting co…

Prometeo genetista? Per il superamento dell'opposizione natura/cultura, una prospettiva antropopoietica ed ecopoietica

2019

During the XVIIth Century, particularly with Descartes, appeared the modern concept of nature: a nature as object submitted to the reason of man. Contrary to what is generally assumed, this « nature » as domain to be worked out by man does not depend on the Greek concept of phusis. It is not to be opposed either to the modern concept of « culture ». On the contrary the Greek phusis as dynamical process invites us to think the relationship between nature and culture, or rather between the environment and the communities of men which live in it and through it in terms of a necessary interaction. The Greek phusis leads to a critique of the modern, neoliberal paradigm of natural ressources to b…

Performance of the cost-effective Planacon ® MCP-PMTs in strong magnetic fields

2020

We present the behavior of the cost-effective Planacon MCP-PMTs with pore diameter in the presence of axial magnetic fields up to 0.5 T. Having a batch of 62 devices of the same type, two MCP-PMTs were selected and their gain variation measured in different magnetic fields. These two otherwise identical devices satisfied the selection criteria by requiring the lowest (1.15 kV) and one of the highest (1.4 kV) bias voltage values to achieve a given gain. Both MCP-PMTs have a nearly identical tolerance of the strong magnetic field despite the significant difference in the bias voltage. This clarifies the mechanism of the B-field influence on the MCP-PMT gain, emphasizing the importance of the …

RPB1 as a marker gene to analyze communities of arbuscular mycorrhizal fungi (Glomeromycota)

2014

The influence of agricultural practice on the diversity of Arbuscular mycorrhizal fungi (AMF, Glomeromycota) continues to be an important research question as these mutualistic symbionts are known to improve plant growth and soil quality. To this day, studies of community diversity in AMF have exclusively been based on nuclear ribosomal gene regions, such as the small and large subunits and the ITS region. In the Glomeromycota, these regions show high intra-organism polymorphism, which can seriously complicate interpretation of diversity data. We chose the rpb1 gene as an alternative marker as this putative single-copy gene has been shown to be monomorphic within fungal isolates but shows a…

Yhtenäiskoulua kohti – opettajien ja rehtorien diskursseja koulukulttuurin muutoksesta

2022

Tässä artikkelissa tarkastellaan yhtenäiskoulun opettajayhteisön sosiaalista todellisuutta, jota rakennetaan ja ylläpidetään vuorovaikutuksen kautta. Tutkimuksen tarkoituksena on selvittää, millaisia konstruktioita tulevan yhtenäiskoulun opettajat ja rehtorit luovat yhtenäisen koulukulttuurin rakentamisesta ja muutokseen sitoutumisesta. Tutkimus on osa opetus- ja kulttuuriministeriön rahoittamaa Uutta luova asiantuntijuus -hanketta. Tutkimusaineisto koostuu kymmenestä tulevan yhtenäiskoulun opettajan ja rehtorin teemahaastattelusta, ja se on analysoitu diskurssianalyysin keinoin. Yhtenäisen koulukulttuurin rakentaminen merkityksellistyy tutkimustuloksissa kolmessa dominoivassa diskurssissa,…

Evaluation eines neuen Softwareassistenten zur automatischen Volumenbestimmung von intrahepatischen Tumoren

2004

Purpose: Computed tomography has become the preferred method in detecting liver carcinomas. The introduction of spiral CT added volumetric assessment of intrahepatic tumors, which was unattainable in the clinical routine with incremental CT due to complex planimetric revisions and excessive computing time. In an ongoing clinical study, a new software tool was tested for the automatic detection of tumor volume and the time needed for this procedure. Materials and Methods: We analyzed patients suffering from hepatocellular carcinoma (HCC). All patients underwent treatment with repeated transcatheter chemoembolization of the hepatic arteria. The volumes of the HCC lesions detected in CT were m…

Statistical Validation of a Comprehensive Gene/miRNA Expression Profile Dataset for miRNA:mRNA Interaction Analysis

2014

Comparative Analysis of Nuclear Matrix Elements of 0νβ+β+ Decay and Muon Capture in 106Cd

2021

Comparative analyses of the nuclear matrix elements (NMEs) related to the 0νβ+β+ decay of 106Cd to the ground state of 106Pd and the ordinary muon capture (OMC) in 106Cd are performed. This is the first time the OMC NMEs are studied for a nucleus decaying via positron-emitting/electron-capture modes of double beta decay. All the present calculations are based on the proton-neutron quasiparticle random-phase approximation with large no-core single-particle bases and realistic two-nucleon interactions. The effect of the particle-particle interaction parameter gpp of pnQRPA on the NMEs is discussed. In the case of the OMC, the effect of different bound-muon wave functions is studied. peerRevie…