Search results for "CE [GGAG]"
showing 10 items of 29328 documents
A different glimpse into mobilities: On the interrelations between daily spatial mobility and social mobility
2017
We explore the link between daily spatial mobility and social mobility, taking changes in the contemporary labor market and family as examples. We propose a new theoretical approach to mobility that is defined as a productive force of social labor. Analyzing the relationship between daily spatial mobility and social mobility, we show that spatial mobility has become a strategy of compensation for the lack of social mobility. Explanations for the increase in daily spatial mobility are also provided. Lastly, we reveal how spatial mobility has the capacity to produce major social change, taking the family as an example. peerReviewed
Hydro-mechanical modelling of a natural slope affected by a multiple slip surface failure mechanism
2009
A coupled hydro-mechanical formulation is presented for the analysis of landslide motion during crisis episodes. The mathematical formulation is used to model a natural slope affected by a multiple slip surface failure mechanism, in which pore water pressure evolution was identified as the main cause for movement accelerations. An elasto-plastic constitutive model is adopted for the behaviour of slip surfaces. Material parameters are obtained by combining the available laboratory tests and the back analysis of some crisis episodes. After being calibrated and validated, the model is applied to improve the understanding of the physical processes involved and to predict the landslide behaviour…
Application of the Information Bottleneck method to discover user profiles in a Web store
2018
The paper deals with the problem of discovering groups of Web users with similar behavioral patterns on an e-commerce site. We introduce a novel approach to the unsupervised classification of user sessions, based on session attributes related to the user click-stream behavior, to gain insight into characteristics of various user profiles. The approach uses the agglomerative Information Bottleneck (IB) algorithm. Based on log data for a real online store, efficiency of the approach in terms of its ability to differentiate between buying and non-buying sessions was validated, indicating some possible practical applications of the our method. Experiments performed for a number of session sampl…
Alteration-Induced Volcano Instability at La Soufrière de Guadeloupe (Eastern Caribbean)
2021
International audience; Volcanoes are unstable structures that deform laterally and frequently experience mass wasting events. Hydrothermal alteration is often invoked as a mechanism that contributes significantly to volcano instability. We present a study that combines laboratory experiments, geophysical data, and large-scale numerical modeling to better understand the influence of alteration on volcano stability, using La Soufrière de Guadeloupe (Eastern Caribbean) as a case study. Laboratory experiments on variably altered (advanced argillic alteration) blocks show that uniaxial compressive strength, Young's modulus, and cohesion decrease as a function of increasing alteration, but that …
Urban Flood Prediction through GIS-Based Dual-Coupled Hydraulic Models
2022
Propagation of pluvial floods in urban areas, occurring with return time periods of few years, can be well solved using dual models accounting for the mutual relationship between the water level in the streets and the discharges inside the sewer pipes. The extended WEC-flood model (EWEC), based on the use of unstructured triangular meshes and a diffusive formulation of the momentum equations in both the 2D and the 1D lower domains, is presented along with its novelty, limits, and advantages. The model is then applied to a small computational domain in the Palermo area, where only some ‘hard’ data given by one rain gauge has been used for calibration and validation, along with ot…
Uncertainty analysis in sewer systems performance evaluation
2005
In recent years, in order to analyse complex urban drainage systems and to identify the most effective measures for improving their efficiency, many parameters, or indicators, have been defined and many methodologies have been proposed in order to quantify sewer systems performance in the most objective and general way. However, some uncertainty arises in these methodologies due to choices which the user has to take in applying the procedure. Thus, performance analysis results are affected by operator experience and they are mainly useful for comparison between different scenarios applied to the same system. In the present paper, a statistical analysis of sewer systems performance has been …
“Palermo liquida. Il progetto per il waterfront come occasione di rigenerazione della città”
2011
Il progetto di riqualificazione del Waterfront di Palermo è parte di una politica nazionale più ampia: il PIAU “Porti e Stazioni”, finanziato dal Ministero delle Infrastrutture, con la collaborazione attiva del Comune, dell'Autorità Portuale e delle Ferrovie. Il nuovo “Piano regolatore portuale” (PRP), oltre ad affrontare le questioni più generali delle funzioni portuali, propone strategie per affrontare la questione della “ aree di interazione città-porto” e le "aree di interfaccia", immaginate per accogliere nuove funzioni residenziali, commerciali, culturali e ricreative. Il paper attraverso la descrizione del progetto per il waterfront di Palermo e il processo di redazione del nuovo PRP…
Regulation of type 1 fimbriae synthesis and biofilm formation by the transcriptional regulator LrhA of Escherichia coli
2005
Type 1 fimbriae ofEscherichia colifacilitate attachment to the host mucosa and promote biofilm formation on abiotic surfaces. The transcriptional regulator LrhA, which is known as a repressor of flagellar, motility and chemotaxis genes, regulates biofilm formation and expression of type 1 fimbriae. Whole-genome expression profiling revealed that inactivation oflrhAresults in an increased expression of structural components of type 1 fimbriae.In vitro, LrhA bound to the promoter regions of the twofimrecombinases (FimB and FimE) that catalyse the inversion of thefimApromoter, and to the invertible element itself. TranslationallacZfusions with these genes and quantification offimEtranscript le…
Restitusjonsvaner hos unge toppidrettsutøvere i Sør-Norge : En kartleggingsstudie av utholdenhet- og ballspillutøvere
2018
Masteroppgave idrettsvitenskap ME517 - Universitetet i Agder 2018 Background: In order to perform optimally in training and competition, the recovery inbetween, through adequate diet and sufficient sleep/rest, is of great importance. Up until now, most studies have only featured adult athletes. Similarly, studies conducted on young athletes, as well as across sports, are limited. Purpose: The purpose of this study was to assess the habits of recovery, in terms of diet and sleep, with regards to the recommendations given by Helsedirektoratet and Olympiatoppen. Further investigating the use of different recovery strategies, among young elite athletes in southern Norway. Method: A total of 36 …
Krievijas Federācijas bruņojuma kontroles politika
2020
Maģistra darba „Krievijas Federācijas bruņojuma kontroles politika” mērķis ir analizēt Krievijas bruņojuma kontroles politiku Eiropas drošības kontekstā. Darbā aplūkoti teorētiskie skaidrojumi drošības konceptam, kā arī uzticību veicinošu mēru nozīme. Darba gaitā tiek skaidrots, kādi ir nosacījumi, kāpēc valstis izvēlas bruņojuma kontroles īstenošanu, kādi ir tās uzdevumi un kā tā ir attīstījusies. Lai aplūkoto Krievijas bruņojuma kontroles politiku, kā gadījumi izpētei ir izvēlēta stratēģiskā bruņojuma samazināšana, kā arī dalība konvencionālā bruņojuma kontroles mēros. Darbā analizēta Krievijas motivācija būt daļai no šiem bruņojuma kontroles mēriem, kā arī analizēta tās saistību ievēroša…