Search results for "Signal"
showing 10 items of 6924 documents
The 3'-UTR of the mRNA coding for the major protein kinase C substrate MARCKS contains a novel CU-rich element interacting with the mRNA stabilizing …
2003
The expression of the major protein kinase C substrate MARCKS (myristoylated alanine-rich C kinase substrate) is controlled by the stability of its mRNA. While the MARCKS mRNA is long living in quiescent fibroblasts (t1/2 = 14 h), its half-life time is drastically reduced (t1/2 = 2 h) in cells treated with phorbol esters to activate protein kinase C (PKC) or treated with growth factors. In a first step to study the underlying mechanism we identified both a cis-element on the MARCKS mRNA and the corresponding trans-acting factors. Fusing the complete 3'-UTR or specific regions of the 3'-UTR of the MARCKS gene to a luciferase reporter gene caused a drastic decrease in luciferase expression to…
Classification par méthodes d’apprentissage supervisé et faiblement superviséd’images multimodales pour l’aide au diagnostic du lentigo malin en derm…
2021
Carried out in collaboration with the Saint-Étienne University Hospital, this work provides additional information to help the skin diagnosis by providing new decision methods on Lentigo Maligna and Lentigo Maligna Melanoma pathologies. To this end, the modalities regularly used in clinical conditions are made available to this work and are orchestrated within a multimodal process. Among image modalities, may be mentioned the clinical photography, the dermatoscopy, and the confocal reflectance microscopy. Initially, the first steps of this manuscript focus on reflectance confocal microscopy as the work in computer diagnostic assistance is relatively underdeveloped, in particular on the dete…
Non-periodic Discrete-Spline Wavelets
2015
This chapter describes wavelet analysis in the spaces of discrete splines whose spans are powers of 2. This wavelet analysis is similar to wavelet analysis in the polynomial-spline spaces. The transforms are based on relations between exponential discrete splines from different resolution scales. Generators of discrete-spline wavelet spaces are described. The discrete-spline wavelet transforms generate wavelet transforms in signal space. Practically, wavelet transforms of signals are implemented by multirate filtering of signals by two-channel filter banks with the downsampling factor 2 (critically sampled filter banks). The filtering implementation is accelerated by switching to the polyph…
Assessment of Energy and Economic Effectiveness of Photovoltaic Systems Operating in a Dense Urban Context
2013
A methodology that permits testing the level of integration of the photovoltaic technology in urban areas is presented. The percentage of coverage of the electricity demand of grid-connected photovoltaic systems installed on the roofs of buildings were investigated in a district of the city of Palermo (Sicily). After classifying roofs according to their shape, orientation and pitch by means of satellite images provided by Google Earth, the ratio of the productivity of the PV systems and the consumption of electricity of the households was analysed. The results of the energy assessment have been screened considering the economic feasibility of grid-connected photovoltaic systems: the energy …
Prediction of user action in moving-target selection tasks
2015
Selection of moving targets is a common, yet complex task in human–computer interaction (HCI), and more specifically in virtual reality (VR). Action prediction has proven to be the most comprehensive enhancement to address moving-target selection challenges. Current predictive techniques, however, heavily rely on continuous tracking of user actions, without considering the possibility that target-reaching actions may have a dominant pre-programmed component—this theory is known as the pre-programmed control theory.Thus, based on the pre-programmed control theory, this research explores the possibility of predicting moving-target selection prior to action execution. Specifically, three level…
Collaborative Content Downloading in VANETs with Fuzzy Comprehensive Evaluation
2019
Vehicle collaborative content downloading has become a hotspot in current vehicular ad-hoc network (VANET) research. However, in reality, the highly dynamic nature of VANET makes users lose resources easily, and the transmission of invalid segment data also wastes valuable bandwidth and storage of the users&rsquo
Flerkanals multimedia over IP
2001
Masteroppgave i informasjons- og kommunikasjonsteknologi 2001 - Høgskolen i Agder, Grimstad Denne diplomoppgaven tar for seg multimedia over IP ved bruk av videokonferanse. To møterom blir forsøkt innredet med høykapasitets videokonferanseutstyr med flere parallelle videokanaler. Ideen er å benytte disse til å øke den sosiale nærheten og unnvike kikkehullseffekten, slik at man kan utnytte dette til å skape bedre rammer for kreativt samarbeid på tvers av lange distanser. Vi diskuterer oppstilling av utstyr med bruk av et godt videokonferanseverktøy, måter å øke muligheten for øyekontakt og det å kunne henvende seg til den enkelte i et møte. Vi rapporter enkelte brukererfaringer og lærdommer …
Modellering og simulering av ResQcom
2001
Masteroppgave i informasjons- og kommunikasjonsteknologi 2001 - Høgskolen i Agder, Grimstad De tre nødetatene brann, helse og politi har i dag gamle analoge kommunikasjonsnett som ønskes erstattet av et moderne digitalt nett kalt Tetra. Resqcom er et er et samlebegrep på produkter, tjenester og løsninger for nødetatene og redningstjenesten som benytter dette nettet. I denne rapporten er det gjort et forsøk på å finne ut av hvordan Resqcom kan bidra til å bedre koordinering, kvalitetsheving og effektivisering av nødetatenes koordineringintensive arbeid, gjennom bedre tilrettelegging for kommunikasjon og applikasjoner for informasjonsbehandling på Tetra-nettet. Dette er gjort ved å se nærmere…
Lydabsorpsjon ved hjelp av en sylindrisk absorbator i et sylindrisk rør
2005
Masteroppgave i informasjons- og kommunikasjonsteknologi 2005 - Høgskolen i Agder, Grimstad Mange sitter daglig i lokaler med tildels støyende omgivelser. Dette kan i mange tilfeller føre til stress, som igjen i mange tilfeller fører til sykemeldinger og lavere effektivitet hos de ansatte. Dette kan videre føre til store økonomiske tap for bedriften. I 2003 publiserte Arne Reitan artikkelen "Active absorption of sound by a cylindrical absorber in a sylindrical duct" i Acta Acustica. Kristiansandsfirmaet Noise Control AS, ønsker å bruke den matematiske modellen beskrevet der, til å lage en innretning for å redusere akustisk støy. Vår oppgave har vært å lage styresystemet til et testoppsett, …
From Live Sequence Charts to implementation : a study of the LSC specification, the execution of behavioral requirements and exploring the possibilit…
2003
Masteroppgave i informasjons- og kommunikasjonsteknologi 2003 - Høgskolen i Agder, Grimstad In the article ”From Play-In Scenarios to Code: An Achievable Dream” [8] D.Harel outlines an exiting new way of developing software with the aid of the new and expressively powerful language of live sequence charts (LSC) [1] for describing message sequencing. The language of LSC is a highly visual approach for modeling behavioral requirements and is based on message sequence charts [13]. LSC introduces the ability to specify mandatory behavior in charts through the notion of “liveness”, events that must happen. The development process described involves using a friendly capture method called “play-in…