Search results for "process"
showing 10 items of 22310 documents
Stochastic fracture analysis of systems with moving material
2015
This paper considers the probability of fracture in a system in which a material travels supported by rollers. The moving material is subjected to longitudinal tension for which deterministic and stochastic models are studied. In the stochastic model, the tension is described by a multi-dimensional Ornstein-Uhlenbeck process. The material is assumed to have initial cracks perpendicular to the travelling direction, and a stochastic counting process describes the occurrence of cracks in the longitudinal direction of the material. The material is modelled as isotropic and elastic, and LEFM is applied. For a general counting process, when there is no fluctuation in tension, the reliability of t…
Development of fast analysis methods for extractives in papermaking process waters
2011
A fast analysis method with an online sample enrichment technique for the analysis of resin and fatty acids present in papermaking process waters was developed. This method was based on atmospheric pressure chemical ionization (APCI) and mass spectrometry (MS) for the detection of [M-H]- ions of compounds of interest. The method was applied to the control of the most prevalent resin (dehydroabietic and abietic) and fatty (palmitic, stearic, oleic, and linolenic) acid levels in papermaking process waters. Continuous data on these acids are of practical importance when predicting possible deposit-derived problems in the paper machine. The first part of the study was focused on the development…
Semantically Closed Languages Reconsidered. Re-Reading Alfred Tarski
2019
The text shows that Alfred Tarski studied semantics to define a true sentence in a m a t e r i a l l y a d e q u a t e and f o r m a l l y c o r r e c t way, and in effect he defined the co-called semantically closed languages as a subset of formalized ones, in which the occurrence of the Liar paradox is imminent because of the features of the language used. This is one of the points of Tarski’s heritage where misunderstandings constantly occur among the readers of Tarski‘s work, and that is why the present paper may prove to be useful by presenting suitable excerpts from the original Tarski’s text. Tarski found additional limiting criteria applicable to formalised languages, which may prev…
Collision Avoidance with Potential Fields Based on Parallel Processing of 3D-Point Cloud Data on the GPU
2014
In this paper we present an experimental study on real-time collision avoidance with potential fields that are based on 3D point cloud data and processed on the Graphics Processing Unit (GPU). The virtual forces from the potential fields serve two purposes. First, they are used for changing the reference trajectory. Second they are projected to and applied on torque control level for generating according nullspace behavior together with a Cartesian impedance main control loop. The GPU algorithm creates a map representation that is quickly accessible. In addition, outliers and the robot structure are efficiently removed from the data, and the resolution of the representation can be easily ad…
HDR-ARtiSt: a FPGA-based Smart Camera for High Dynamic Range color video from multiple exposures
2014
International audience; A camera is able to capture only a part of a high dynamic range scene information. The same scene can be fully perceived by the human visual system. This is true especially for real scenes where the difference in light intensity between the dark areas and bright areas is high. The imaging technique which can overcome this problem is called HDR (High Dynamic Range). It produces images from a set of multiple LDR images (Low Dynamic Range), captured with different exposure times. This technique appears as one of the most appropriate and a cheap solution to enhance the dynamic range of captured environments. We developed an FPGA-based smart camera that produces a HDR liv…
UNE APPROCHE PARALLELE D'EVALUATION DES PARAMETRES DE TEXTURE POUR L'ANALYSE D'IMAGES DE GRANDE TAILLE
2011
International audience; The main objective of this paper is to develop a new image processing technique that could better be adapted to the processing of large and complex images, especially SAR images, in relation to the former methods of our works. We propose here a new approach of textural parameters evaluation which is about (Ng+1)n-1 times faster than the co-occurrence matrix approach considered as classical, where n is the order of the textural parameter and Ng being the maximum grey level in the image. This approach is based on a new modeling of textural parameters of a generic order n>1 equivalent to the classical formulation, but which is no longer based on frequency matrix (co-occ…
Lis pendens un Forum Non conveniens doktrīnas ievērošana Eiropas Savienības un Amerikas Savienoto valstu tiesībās
2017
Maģistra darba tēma "Lis pendens un Forum non conveniens doktrīnas ievērošana Eiropas Savienības un Amerikas Savienoto Valstu tiesībās" ir aktuāla starptautiskajā civilprocesā, jo aplūko principu piemērošanu dažādās tiesību sistēmās. Darbā tiek aplūkots Lis pendens un Forum non conveniens saturs, to piemērošana un problemātika. Maģistra darba mērķis ir aplūkot kā gan praksē, gan normatīvajos aktos tiek ievēroti attiecīgie principi, kā arī aplūkot atšķirības, kādas starp principu ievērošanu ir dažādās tiesību sistēmās, un konstatēt, vai starptautiskais civilprocess ir vienots attiecīgajās tiesību sistēmās. Maģistra darba tēmas aktualitāte balstās uz to, ka mūsdienās vairs nav iedomājams, ka …
Effects of satellite transmitters on survival in Snowy Owls Bubo scandiacus
2017
The use of tracking devices to monitor birds is extensive, but the effects of such instruments on equipped individuals are still insufficiently taken into account. Here we evaluate potential effects of backpack-mounted satellite transmitters (platform terminal transmitters; PTTs) on survival of 28 Snowy Owls Bubo scandiacus. Six confirmed deaths were all probably related to natural and human-induced causes. Although PTT operational time was significantly shorter than expected lifetime of Snowy Owls, five owls were observed alive after transmissions ceased. Additionally four PTTs stopped due to low battery levels, indicating end of transmitter life and not owl mortality. We found no evidence…
Diktāta loma angļu valodas mācīšanā
2017
Šī bakalaura darba uzdevums bija izpētīt diktātu lomu angļu valodas apmācībā. Lai sasniegtu mērķi, tika analizēti septiņdesmit divi diktāti, kurus bija rakstījuši astoņi studenti. Analīzei tika izvēlēti trīs parametri: pareizrakstība, diktātu veidi, pieļautās kļūdas. Tās mērķis bija noskaidrot, kā un vai diktātu rakstīšana uzlabo pareizrakstību, kuri diktātu veidi ir visefektīvākie un vai diktātu rakstīšana vispār veicina angļu valodas apreizu apguvi. Darbā tika pielietots pētnieciska metode: gadījuma izpēte. Darbā tika analizēti literatūras avoti un septiņdesmit divi diktāti. Analizētā tēma ir būtiska katram, kurš ieinteresēts un saistīts ar valodas apmācību. Pētījuma rezultāti liecina, ka…
On the relations between parents’ and children’s implicit and explicit academic gender stereotypes.
2017
Although parents may represent influential sources of children’s gender stereotypes, to date no study has directly investigated the relations between parents’ and children’s gender stereotypes regarding academic abilities. Aiming at filling this gap, in the present study parents’ and their young children’s gender stereotypes about math and language were assessed using both explicit and implicit measures for each member of the family. Sixty-eight Italian 6-year-olds, their mothers, and their fathers (a) performed an Implicit Association Test designed to assess implicit gender stereotypes about math and language, and (b) completed a measure of the relevant explicit stereotypes. Fathers’, but …