Processus | EPFL Graph Search

Le mot processus vient du latin pro (au sens de « vers l'avant ») et de cessus, cedere (« aller, marcher ») ce qui signifie donc aller vers l'avant, avancer. Ce mot est également à l'origine du mot procédure qui désigne plutôt la méthode d'organisation, la stratégie du changement. Sciences et techniques Biologie et écologie

En anatomie, un processus est une partie proéminente d'un organe ou un relief osseux aussi appelé apophyse.
En écologie et biologie, les processus environnementaux, ou processus écosystémiques, sont des mécanismes ou des événements reliant les organismes à leur environnement. Ils interviennent aux différents niveaux du vivant (gène, génome, cellule, organe, organisme, population, écosystème, biosphère) et comprennent les différents flux composant les cycles biogéochimiques.

Économie et gestion

En sciences de gestion, un processus est l'organisation d'un ensemble d'activités contribuant aux objectifs d'une organisation. C

BPMN process generation and optimization for readability in the context of telemedecine

Charline Montial

In business, automated processes can be specified using the BPMN standard, which stands for Business Process Model and Notation. It is presented as flowcharts with standardized graphical elements to show the possible flows and activities of a process. These diagrams can be seen as a graph with logical expressions conditioning their edges. The telemedecine start-up Soignez-moi.ch uses BPMN to describe complex medical forms in a readable way. Soignez-moi.ch offers medical consultations via an online platform. The first step for the patient is to fill a questionnaire about his/her symptoms. In the second step, a doctor accesses to the answers and proceeds to call the patient for the teleconsultation. The complexity of these medical forms comes from the fact that the questions are adapted to the patient answers, which leads to different possible flows. Complex forms from another telemedecine website, Diaana, had to be translated to BPMN to be compatible and used at Soignez-moi.ch. Diaana is a contraction of the words diagnosis and anamnesis. The way these forms are specified is very different from what has been modeled in Soignez-moi.ch: instead of having separated branches, there is a sequential list of questions. In this list, every question is evaluated on its own to see if it is asked or not. The question conditions are Boolean expressions. If a direct translation to BPMN is performed, there is no branching to show the relationships between the questions. The aim of my work is to highlight similarities in the branch conditions to make the diagrams more readable and editable by humans. Doctors and collaborators read the medical BPMN processes and may modify them. It should be a pleasant experience for them to go through the diagrams. They should quickly understand in a visual way if questions are related, and how they are related. The BPMN process readability has been achieved by extracting patterns, showing the implications between the questions to have a readable diagram with meaningful branches. This translation has been applied to 18 questionnaires. Two questionnaires were not improved because they were only composed of one question. One questionnaire was also not improved because all its questions were unconditional, meaning that no relationship between the question conditions could be highlighted. Another questionnaire with conditional questions was not improved because its conditions were unrelated. 14/18 questionnaires have had their readability improved.

2022

Modeling the breaking-off of icebergs from tidewater glaciers

Qimin Wang

Ice calving is the breakaway process of icebergs which plays an important role in the dy- namics and the mass balance of ice sheets. Our project is to use Akantu (An open source object-oriented Finite Element library by LSMS) to reproduce the fracturing stages of the Bowdoin glacier in Greenland. Studies were first made on the mechanisms of ice calving and the provided data, to extract the key factors for our simulation. The HPC (high performance computing) simulation model was built by Python scripts, including preprocessing mesh file, applying arbitrary loading profiles, defining boundary conditions and initial conditions, pass- ing message through the simulation process, etc. The simulation scheme has been modified to better analysis the impact of water pressure and velocity field. Simulation acceleration was also implemented by amplifying the velocity field, so that the damage initiation and propagation could be explored faster. Some preliminary results about the relationship of system energy and damage propagation was analyzed. In the end, we proposed some study direction for the future researchers on the similar subject.

2019

Stabilized cyanine dyes and their use

Rolf Steiger

A process for increasing the fastness to light, the fluorescence polarisation and fluorescence quantum yield of cyanine dyes, which process comprises stabilising cyanine dyes with the aid of micellar structures of a) surfactants and/or b) surfactant crown ether complexes of monovalent of divalent transition metal cations, or c) mixtures of surfactants, in each case in combination with non-surfactant, nitrogen-containing or nitrogen- and oxygen-containing 16- to 18-membered crown ether complexes of monovalent or divalent transition metal cations.

(Ciba-Geigy A.-G., Switz.).1980

BPMN process generation and optimization for readability in the context of telemedecine

Charline Montial

2022