Search results for " Transformation"
showing 10 items of 1043 documents
Lost People : How National AI-Strategies Paying Attention to Users
2021
Abstract. This paper focuses on how major national strategies call attention to the human dimensions of artificial intelligence (AI). All intelligent technologies using AI are constructed for people as either active users or as relatively passive target persons. Thus, human properties and human research should have an important role in developing future AI systems. In these development strategies, it is interesting to pay attention to the underlying intuitive assumptions and tacit commitments. This issue is especially interesting when we think about what governmental working groups say about people and their changing lives in their strategies. The traditional stances adopted in writing nati…
The moment equation closure method revisited through the use of complex fractional moments
2015
In this paper the solution of the Fokker Planck (FPK) equation in terms of (complex) fractional moments is presented. It is shown that by using concepts coming from fractional calculus, complex Mellin transform and related ones the probability density function response of nonlinear systems may be written in discretized form in terms of complex fractional moment not requiring a closure scheme.
On the Solid Bonding Phenomena in Linear Friction Welding and Accumulative Roll Bonding Processes: Numerical Simulation Insights
2015
Solid Bonding based welding processes allow to obtain defect free joints with low residual stress and low distortion. However, the engineering and optimization of solid bonding processes is difficult and requires a large number of time and cost consuming test trials. In this way, proper numerical models are essential tools permitting effective process design. The aim of this research was the comparison of the material process conditions during two different manufacturing processes taking advantage of the same metallurgical phenomenon, namely solid bonding. Linear Friction Welding, used to weld non-axisymmetric components and Accumulative Roll Bonding, used to increase the mechanical propert…
Advanced FEM modeling of friction stir welding of Ti6Al4V: Microstructural evolutions
2013
Friction Stir Welding (FSW) is a solid state welding process patented in 1991 by TWI; initially adopted to weld aluminum alloys, is now being successfully used also for high resistant materials. Welding of titanium alloys by traditional fusion welding techniques presents several difficulties due to high material reactivity resulting in bonding with oxygen, hydrogen, and nitrogen with consequent embrittlement of the joint. In this way FSW represents a cost effective and high quality solution. The final mechanical properties of the joints are strictly connected to the microstructural evolutions, in terms of phase change, occurring during the process. In the paper a 3D FEM model of the FSW wel…
Comparing air quality indices aggregated by pollutant
2011
In this paper a new aggregate Air Quality Index (AQI) useful for describing the global air pollution situation for a given area is proposed. The index, unlike most of currently used AQIs, takes into account the combined effects of all the considered pollutants to human health. Its good performance, tested by means of a simulation plan, is confirmed by a comparison with two other indices proposed in the literature, one of which is based on the Relative Risk of daily mortality, considering an application to real data.
The sunset of Gortyn: amphorae in 7th –8th centuries AD
2014
Gortyn (A. Di Vita [ed.] 2000-01), some new contexts, more delimited and reliable, allow us to define better circulation, developments, and local use of amphorae in the last periods of urban life of the Cretan city. Two contexts of the mid-late 7th and late 7th-8th centuries are briefly analysed, coming from different quarters of the town (the Old Agora and the Early Byzantine houses near the “Praetorium”), and resulting from different formative processes, which could represent the circulation trends just before, and in the re-occupation phase after the earthquake that dismembered the Late Roman urban layout at the end of the 7th/early 8th century. They display a variety of imports from tra…
Physics at the grocery store
2022
The motion of a food can on an accelerated conveyor belt in a grocery store is described by means of Newtonian mechanics. By assuming that the food can may roll on the conveyor belt, when the cashier starts this device, one can prove that the rolling motion, observed in the belt reference system, is such that the can is seen to move away for the cashier. Experiments can be performed with common material: an empty and a full food can, and a sheet of paper as conveyor belt.
Influence ofKi-ras-driven oncogenic transformation on the protein network of murine fibroblasts
2007
Ki-ras gene mutations that specifically occur in codons 12, 13 and 61 are involved in the carcinogenesis of acute myeloid leukemia, melanoma and different carcinomas. In order to define potential mutation-specific therapeutic targets, stable transfectants of NIH3T3 cells carrying different Ki-ras4B gene mutations were generated. Wild type Ki-ras transformants, mock transfectants and parental cells served as controls. These in vitro model systems were systematically analyzed for their protein expression pattern using two-dimensional gel electrophoresis followed by mass spectrometry and/or protein sequencing. Using this approach, a number of target molecules that are differentially but coordi…
Towards a Hostessing Society? Mobile Arrangements of Gender and Labour
2008
This article theorizes the forms and interrelations of mobilized work and arrangements of gender in the context of “new work”: an ideology of the flexible labour market of the new economy from the perspective of the workers. The notion of new work is further complicated by the thesis of the feminization of work, whereby, on the one hand, temporary employment is increasingly common also among men and, on the other, attributes and conditions formerly connected to women and understood as feminine virtues or domestic skills are now required from both women and men. Meanwhile, women migrate and are trafficked from poor countries to wealthy ones to perform a range of “old work” for women. Here, t…
Posttranslational N-glycosylation of the hepatitis B virus large envelope protein
2007
Abstract Background The addition of N-linked glycans to proteins is normally a cotranslational process that occurs during translocation of the nascent protein to the endoplasmic reticulum. Here, we report on an exception to this rule occurring on the hepatitis B virus (HBV) large L envelope protein that is a subject to co-plus posttranslational N-glycosylation. Results By using an improved detection system, we identified so far unrecognized, novel isoforms of L. Based on mutational analyses, the use of N-glycosylation inhibitors, and pulse-chase studies, we showed that these isoforms are due to posttranslational N-glycan addition to the asparagines 4 and 112 within the preS domain of L. Whi…