Search results for "model."

Transient behaviour of a MSF desalination unit: modelling and experiments

2008

Comparing the Effect of Product-Based Metrics on the Translation Process

2021

Characteristics of the translation product are often used in translation process research as predictors for cognitive load, and by extension translation difficulty. In the last decade, user-activity information such as eye-tracking data has been increasingly employed as an experimental tool for that purpose. In this paper, we take a similar approach. We look for significant effects that different predictors may have on three different eye-tracking measures: First Fixation Duration (duration of first fixation on a token), Eye-Key Span (duration between first fixation on a token and the first keystroke contributing to its translation), and Total Reading Time on source tokens (sum of fixations…

Use of translational genomics to identify genes important for legume seed filling

2013

International audience; Translational genomics, i.e., the transfer of genetic information from model species to cultivated crops, is on the brink of revolutionizing plant breeding. The recent publication of genomic sequences for several cultivated legumes is also accelerating this process. For pea, recent highthroughput RNA sequencing, and the prospect of a genome sequencing project, will further accelerate the transfer of information from the Medicago truncatula model to the cultivated crop. We have been using genomics approaches with Medicago as a tool to identify key genes determining seed yield and composition in closely related legumes. Analyses of the proteome and transcriptome of the…

Comparison of a MBR system start-up with and without inoculum: experimental and mathematical model application

2010

The performance of a membrane bioreactor (MBR) system and the extension and mechanisms that lead to the formation of the fouling may differ in relation to the start-up. As a consequence, the MBR start-up may constitute a crucial point that drastically influence the MBR performance in its lifespan. Indeed, the start-up influences the mechanisms of membrane fouling whose effects, in the case of irreversible cake deposition, can be modified only by a chemical membrane washing. In order to gain insights about the effect of the start-up on a MBR system, a MBR pilot plant was build-up and a mathematical model developed. The MBR system was constituted by a hollow fibre membrane module installed in…

A model for wastewater organic removal and fouling development in a SMBR pilot plant

2007

The paper presents the setting up of a mathematical model for membrane bioreactor able to simulate physical-biological wastewater organic removal. The model is basically divided into two sub-models: the first sub-model is basically devoted for the simulation of the biological features and the second one for the physical processes. In particular regarding the biological aspects, the ASM concept has been employed. On the other hand, the physical processes have been modelled considering the deep-bed theory taking into account not only the effect of the physical membrane filtration but also the cake layer effect. This latter operates as a biological membrane leading to a further reduction of th…

‘Seeing the Dark’: Grounding Phenomenal Transparency and Opacity in Precision Estimation for Active Inference

2018

One of the central claims of the Self-model Theory of Subjectivity is that the experience of being someone - even in a minimal form - arises through a transparent phenomenal self-model, which itself can in principle be reduced to brain processes. Here, we consider whether it is possible to distinguish between phenomenally transparent and opaque states in terms of active inference. We propose a relationship of phenomenal opacity to expected uncertainty or precision; i.e., the capacity for introspective attention and implicit mental action. Thus we associate introspective attention with the deployment of 'precision' that may render the perceptual evidence (for action) opaque, while treating t…

Trokšņa piesārņojums Cēsu pilsētas parkos

2020

Maģistra darbā novērtēts trokšņa līmenis Cēsu pilsētas dabas un apstādījumu teritorijās. Pilsētas zaļajā zonā ietilpst parki, skvēri, iekškvartāli un ielu stādījumi. Parki kalpo, kā iespēja cilvēkiem, nedodoties ārpus pilsētas, atpūsties vidē, kas pretstatā no pilsētas ir klusāka, apzaļumota un piemērota kā pieaugušajiem, tā bērniem. Maģistra darbā veikts trokšņa līmeņa novērtējums izmantojot mērījumu metodes, apskatītas un analizētas diennakts un sezonālās parametru svārstības, to ietekmējošie faktori, t.sk. automašīnu plūsma blakus zaļajai infrastruktūrai, kā arī veikta satiksmes trokšņa modelēšana. Darba pētnieciskā daļa realizēta Cēsīs – Cēsu Pils parkā, Maija parkā, Ruckas parkā un Rož…

Dzelzceļa radītā trokšņa novērtējums Rīgā, Krievu salas apkārtnē: instrumentālie mērījumi un modelēšana

2022

Pieaugot dažādu transporta īpatsvaram uz auto un sliežu ceļiem, transporta radītā trokšņa piesārņojuma problemātika ir kļuvusi ar vien aktuālāka. Dzelzceļa transports ir viens no būtiskākajiem transporta radītā trokšņa piesārņojuma avotiem, ņemot vērā tā relatīvi augsto izplatību un radītā trokšņa raksturu. Maģistra darba ietvaros ir novērtēts dzelzceļā transporta radītā trokšņa piesārņojuma veicot instrumentālos mērījumus trokšņa avotā un dzīvojamajās zonās un modelējot tā izplatību apkārtējā vidē, izmantojot inženiertehnisko aprēķinu metodi, Rīgā, Krievu salā un tai pieguļošajās teritorijā. Novērtējums veikts metodikā noteiktajiem standarta un normatīvajā regulējumā Rīgai noteiktajiem vid…

A two-phase insertion technique of unexpected customers for a dynamic dial-a-ride problem

2006

Abstract This work deals with a dynamic dial-a-ride problem with time window constraints. In particular, new unplanned requests for service may arise at a vehicle stop and the driver must decide in real-time whether to accept or reject them. For this problem, we have developed a two-phase insertion algorithm based on route perturbations: the first phase, which is run off-line when the vehicle moves between two successive stops, aims at creating a feasible neighborhood of the current route; while the second phase, which is run in real-time every time a new request occurs, inserts, when possible, the delivery stop of the new customer in the current route.

Badania historyczno-systemowe procesów w wielkich społeczno-terytorialnych systemach: metody modelowania semantycznego w sektorze transportu

2017

Artykuł prezentuje metody modelowania semantycznego procesów zachodzących w sektorze transportu państw członkowskich UE i analizę historyczno-systemową grupy systemów terytorialno-społecznych (STS)w porównywaniu z innymi systemami. Za podstawę przyjęto semantykę opartą na taksonomii transportu kolejowego. Badano zmiany infrastruktury i pracy przewozowej na tle procesów wytwarzania PKB. Analizą objęto retrospektywnie okresy 30-, 20- i 15-letnie. Modelowanie identyfikuje zmiany fazowe w STS, obiektywizuje oceny wpływu czynników geopolitycznych na rozwój i trendy przed- i pokryzysowe.