Mapping di access point wifi su android: valutazione

Sviluppo di un'applicazione Android che effettua scansioni di reti Wi-Fi in una determinata area al fine di mappare tutti gli Access Point rilevabili.

Stream sediments analysis for geochemical mapping of Romagna Apennines (Northern Italy): monitoring and management tool of environmental resources at various scales

Geochemical mapping is a valuable tool for the control of territory that can be used not only in the identification of mineral resources and geological, agricultural and forestry studies but also in the monitoring of natural resources by giving solutions to environmental and economic problems. Stream sediments are widely used in the sampling campaigns carried out by the world's governments and research groups for their characteristics of broad representativeness of rocks and soils, for ease of sampling and for the possibility to conduct very detailed sampling In this context, the environmental role of stream sediments provides a good basis for the implementation of environmental management measures, in fact the composition of river sediments is an important factor in understanding the complex dynamics that develop within catchment basins therefore they represent a critical environmental compartment: they can persistently incorporate pollutants after a process of contamination and release into the biosphere if the environmental conditions change. It is essential to determine whether the concentrations of certain elements, in particular heavy metals, can be the result of natural erosion of rocks containing high concentrations of specific elements or are generated as residues of human activities related to a certain study area. This PhD thesis aims to extract from an extensive database on stream sediments of the Romagna rivers the widest spectrum of informations. The study involved low and high order stream in the mountain and hilly area, but also the sediments of the floodplain area, where intensive agriculture is active. The geochemical signals recorded by the stream sediments will be interpreted in order to reconstruct the natural variability related to bedrock and soil contribution, the effects of the river dynamics, the anomalous sites, and with the calculation of background values be able to evaluate their level of degradation and predict the environmental risk.

Analysis of the introduction of a business process mapping system in Rosetti Marino spa

After a first theoric introduction about Business Process Re-engineering (BPR), are considered in particular the possible options found in literature regarding the following three macro-elements: the methodologies, the modelling notations and the tools employed for process mapping. The theoric section is the base for the analysis of the same elements into the specific case of Rosetti Marino S.p.A., an EPC contractor, operating in the Oil&Gas industry. Rosetti Marino implemented a tool developped internally in order to satisfy its needs in the most suitable way possible and buit a Map of all business processes,navigable on the Company Intranet. Moreover it adopted a methodology based upon participation, interfunctional communication and sharing. The GIGA introduction is analysed from a structural, human resources, political and symbolic point of view.

Geotechnical characterization of mixed sandy and silty soils using piezocone tests: Analysis of partial drainage phenomena and rate effects on the experimental soil response

The cone penetration test (CPT), together with its recent variation (CPTU), has become the most widely used in-situ testing technique for soil profiling and geotechnical characterization. The knowledge gained over the last decades on the interpretation procedures in sands and clays is certainly wide, whilst very few contributions can be found as regards the analysis of CPT(u) data in intermediate soils. Indeed, it is widely accepted that at the standard rate of penetration (v = 20 mm/s), drained penetration occurs in sands while undrained penetration occurs in clays. However, a problem arise when the available interpretation approaches are applied to cone measurements in silts, sandy silts, silty or clayey sands, since such intermediate geomaterials are often characterized by permeability values within the range in which partial drainage is very likely to occur. Hence, the application of the available and well-established interpretation procedures, developed for ‘standard’ clays and sands, may result in invalid estimates of soil parameters. This study aims at providing a better understanding on the interpretation of CPTU data in natural sand and silt mixtures, by taking into account two main aspects, as specified below: 1)Investigating the effect of penetration rate on piezocone measurements, with the aim of identifying drainage conditions when cone penetration is performed at a standard rate. This part of the thesis has been carried out with reference to a specific CPTU database recently collected in a liquefaction-prone area (Emilia-Romagna Region, Italy). 2)Providing a better insight into the interpretation of piezocone tests in the widely studied silty sediments of the Venetian lagoon (Italy). Research has focused on the calibration and verification of some site-specific correlations, with special reference to the estimate of compressibility parameters for the assessment of long-term settlements of the Venetian coastal defences.

A multiparental cross population for mapping QTL for relevant agronomic traits in durum wheat (Triticum durum Desf.)

Multiparental cross designs for mapping quantitative trait loci (QTL) in crops are efficient alternatives to conventional biparental experimental populations because they exploit a broader genetic basis and higher mapping resolution. We describe the development and deployment of a multiparental recombinant inbred line (RIL) population in durum wheat (Triticum durum Desf.) obtained by crossing four elite cultivars characterized by different traits of agronomic value. A linkage map spanning 2,663 cM and including 7,594 single nucleotide polymorphisms (SNPs) was produced by genotyping 338 RILs with a wheat-dedicated 90k SNP chip. A cluster file was developed for correct allele calling in the framework of the tetraploid durum wheat genome. Based on phenotypic data collected over four field experiments, a multi-trait quantitative trait loci (QTL) analysis was carried out for 18 traits of agronomic relevance (including yield, yield-components, morpho-physiological and seed quality traits). Across environments, a total of 63 QTL were identified and characterized in terms of the four founder haplotypes. We mapped two QTL for grain yield across environments and 23 QTL for grain yield components. A novel major QTL for number of grain per spikelet/ear was mapped on chr 2A and shown to control up to 39% of phenotypic variance in this cross. Functionally different QTL alleles, in terms of direction and size of genetic effect, were distributed among the four parents. Based on the occurrence of QTL-clusters, we characterized the breeding values (in terms of effects on yield) of most of QTL for heading and maturity as well as yield component and quality QTL. This multiparental RIL population provides the wheat community with a highly informative QTL mapping resource enabling the dissection of the genetic architecture of multiple agronomic relevant traits in durum wheat.

Statistical analysis of the error associated with the simplification of the stratigraphy in geotechnical models

The uncertainties in the determination of the stratigraphic profile of natural soils is one of the main problems in geotechnics, in particular for landslide characterization and modeling. The study deals with a new approach in geotechnical modeling which relays on a stochastic generation of different soil layers distributions, following a boolean logic – the method has been thus called BoSG (Boolean Stochastic Generation). In this way, it is possible to randomize the presence of a specific material interdigitated in a uniform matrix. In the building of a geotechnical model it is generally common to discard some stratigraphic data in order to simplify the model itself, assuming that the significance of the results of the modeling procedure would not be affected. With the proposed technique it is possible to quantify the error associated with this simplification. Moreover, it could be used to determine the most significant zones where eventual further investigations and surveys would be more effective to build the geotechnical model of the slope. The commercial software FLAC was used for the 2D and 3D geotechnical model. The distribution of the materials was randomized through a specifically coded MatLab program that automatically generates text files, each of them representing a specific soil configuration. Besides, a routine was designed to automate the computation of FLAC with the different data files in order to maximize the sample number. The methodology is applied with reference to a simplified slope in 2D, a simplified slope in 3D and an actual landslide, namely the Mortisa mudslide (Cortina d’Ampezzo, BL, Italy). However, it could be extended to numerous different cases, especially for hydrogeological analysis and landslide stability assessment, in different geological and geomorphological contexts.

Un sistema per il Mapping di Access Point Wi-Fi in ambito Android

Un sistema per il mapping di access point wi-fi utilizzando un client scritto in android ed un server scritto in php. Il client si occuperà di scansionare le reti disponibili ed inviarle al server che con tali informazioni potrà inferire sulle posizioni effettive degli access point e fornire ad altri client informazioni più dettagliate per potersi connettere.

Fine Mapping of qroot-yield-1.06, a QTL for Root, Plant Vigor and Yield in Maize

Root-yield-1.06 is a major QTL affecting root system architecture (RSA) and other agronomic traits in maize. The effect of this QTL has been evaluated with the development of near isogenic lines (NILs) differing at the QTL position. The objective of this study was to fine map qroot-yield-1.06 by marker-assisted searching for chromosome recombinants in the QTL interval and concurrent root phenotyping in both controlled and field conditions, through successive generations. Complementary approaches such as QTL meta-analysis and RNA-seq were deployed in order to help prioritizing candidate genes within the QTL target region. Using a selected group of genotypes, field based root analysis by ‘shovelomics’ enabled to accurately collect RSA information of adult maize plants. Shovelomics combined with software-assisted root imaging analysis proved to be an informative and relatively highly automated phenotyping protocol. A QTL interval mapping was conducted using a segregating population at the seedling stage grown in controlled environment. Results enabled to narrow down the QTL interval and to identify new polymorphic markers for MAS in field experiments. A collection of homozygous recombinant NILs was developed by screening segregating populations with markers flanking qroot-yield-1.06. A first set of lines from this collection was phenotyped based on the adapted shovelomics protocol. QTL analysis based on these data highlighted an interval of 1.3 Mb as completely linked with the target QTL but, a larger safer interval of 4.1 Mb was selected for further investigations. QTL meta-analysis allows to synthetize information on root QTLs and two mQTLs were identified in the qroot-yield-1.06 interval. Trascriptomics analysis based on RNA-seq data of the two contrasting QTL-NILs, confirmed alternative haplotypes at chromosome bin 1.06. qroot-yield-1.06 has now been delimited to a 4.1-Mb interval, and thanks to the availability of additional untested homozygous recombinant NILs, the potentially achievable mapping resolution at qroot-yield-1.06 is c. 50 kb.

Realizzazione di un'applicazione di Projection Mapping con OpenFrameworks

Il Projection Mapping è una tecnologia che permette di proiettare delle immagini sulla superficie di uno o più oggetti, anche di forma irregolare, trasformandoli in display interattivi. Il suo utilizzo, abbinato a suoni e musiche, permette di creare una narrazione audio-visuale. La suggestione e l’emozione scaturite dalla visione di una performance di Projection Mapping su di un monumento pubblico, hanno stimolato la mia curiosità e mi hanno spinto a cercare di capire se era possibile realizzare autonomamente qualcosa di analogo. Obiettivo di questa tesi è perciò spiegare cos’è il Projection Mapping e fornire una serie di indicazioni utili per realizzarne un’applicazione interattiva con OpenFrameworks (un framework open-source in C++) e hardware a basso costo (un computer, un videoproiettore e un sensore Kinect).

Tecniche automatiche di mapping e localizzazione in ambienti indoor

Il mapping di grandezze fisiche risulta estremamente importante, essendo in grado di fornire un adeguato supporto per la localizzazione e il monitoraggio di parametri ambientali sensibili. Nel caso indoor, in assenza di un sistema di localizzazione di riferimento analogo al GPS per il caso outdoor, sfruttando appieno le potenzialità della sensoristica a bordo degli smartphone, si è fatto progressivamente strada il mapping di grandezze fisiche quali, ad esempio, il segnale Wi-Fi e il campo magnetico terrestre. In questo caso il mapping, senza richiedere alcuna infrastruttura e coadiuvato dall'utilizzo di dispositivi portatili largamente diffusi ad uso quotidiano, rappresenta una soluzione relativamente recente ridefinibile come Mobile Crowd Sensing. Il MCS rappresenta un nuovo paradigma di servizio, volto a sfruttare l'interconnettività tra dispositivi portatili per effettuare misurazioni di caratteristiche ambientali in maniera automatizzata, aggregandole in un sistema cloud usufruibile ad una vasta comunità. Tuttavia , il considerevole flusso di dati generato, la variabilità temporale delle grandezze di interesse e il rumore insito nelle misurazioni costituiscono problematiche fondamentali per l'utilizzo e la gestione delle misurazioni effettuate. Per tali motivi l'attività di tesi ha previsto i seguenti obiettivi: (i) fornire una panoramica delle principali tecniche e tecnologie di localizzazione volta a motivare l'importanza del mapping di grandezze fisiche ambientali; (ii) individuazione di grandezze fisiche appetibili per la creazione di mappe affidabili e realizzabili nei contesti applicativi più disparati, sfruttando risorse già presenti nell'ambiente; (iii) sviluppo di un algoritmo statistico in grado di fornire una stima accurata dell'andamento spaziale della grandezza di interesse attraverso un numero limitato di misurazioni, mantenendo la compatibilità con processi MCS e una bassa complessità computazionale. L’algoritmo sviluppato è stato validato attraverso simulazioni e misurazioni svolte in ambienti reali. In particolare, prove sperimentali sono state effettuate nell’arena Vicon nei laboratori DEI dell’Università di Bologna, sede Cesena, concepita dal gruppo di ricerca Casy.

Noise mapping of highly trafficked roads of the province of Bologna according to D.Lgs. 194/2005

The European Community has stressed the importance of achieving a common understanding to deal with the environmental noise through community actions of the Member States. This implies the use of harmonized indicators and specific information regarding the values of indicators, the exceedance of limits and the number of people and dwellings exposed to noise. The D.Lgs. 149/2005 in compliance with the European Directive 2002/49/EC defines methodologies, noise indicators and types of outputs required. In this dissertation the work done for the noise mapping of highly trafficked roads of the Province of Bologna will be reported. The study accounts for the environmental noise generated by the road infrastructure outside the urban agglomeration of Bologna. Roads characterized by an annual traffic greater than three millions of vehicles will be considered. The process of data collection and validation will be reported, as long as the implementation of the calculation method in the software and the procedure to create and calibrate the calculation model. Results will be provided as required by the legislation, in forms of maps and tables. Moreover results regarding each road section accounted will be combined to gain a general understanding of the situation of the overall studied area. Although the understanding of the noise levels and the number of people exposed is paramount, it is not sufficient to develop strategies of noise abatement interventions. Thus a further step will be addressed: the creation of priority maps as the basis of action plans for organizing and prioritizing solutions for noise reduction and abatement. Noise reduction measures are reported in a qualitative way in the annex and constitute a preliminary research.

Statistical mapping of real environments with uwb radars

In this master thesis I evaluated the performance of a Ultra-Wide Bandwidth (UWB) radar system for indoor environments mapping. In particular, I used a statistical Bayesian approach which is able to combine all the measurements collected by the radar, including system non-idealities such as the error on the estimated antenna pointing direction or on the estimated radar position. First I verified through simulations that the system was able to provide a sufficiently accurate reconstruction of the surrounding environment despite the limitations imposed by the UWB technology. In fact, the emission of UWB pulses is limited in terms of transmitted power by international regulations. Motivated by the promising results obtained through simulations, I successively carried out a measurement campaign in a real indoor environment using a UWB commercial device. The obtained results showed that the UWB radar system is capable of providing an accurate reconstruction of indoor environments also adopting not directional antennas.

Analisi del degassamento di CO2 diffuso dal suolo presso la Solfatara di Pozzuoli (Napoli, Italia): Misura, mapping e quantificazione del flusso totale.

Il presente lavoro ha come obiettivo la descrizione dello studio del degassamento diffuso di CO2 (acquisizione dei dati e loro trattazione) effettuato nell'area vulcanica dei Campi Flegrei (NA), nello specifico nell'area della Solfatara di Pozzuoli. Questo infatti rappresenta attualmente il punto di massimo rilascio di fluidi ed energia dell'intero Distretto Vulcanico Flegreo attraverso attività quali fumarole e degassamento diffuso dal suolo, nonché deformazioni del terreno (bradisismo). Tramite l'acquisizione dei valori di flusso diffuso e delle temperature dei primi 10 cm di suolo, attraverso una trattazione dei dati statistica e geostatistica, è stato possibile distinguere e caratterizzare le sorgenti di CO2 (biologica o vulcanica), la realizzazione di sviluppo di mappe di probabilità e di flusso medio e la quantificazione dell'output totale giornaliero di CO2. Il lavoro è stato suddiviso in due fasi principali: 1. La prima fase ha riguardato l'acquisizione dei dati sul campo nei giorni 19 e 20 marzo 2015, tramite l'utilizzo di una camera d'accumulo ed un termometro munito di sonda, in 434 punti all'interno del cratere della Solfatara e nelle aree circostanti. 2. Nella seconda fase sono stati elaborati i dati, utilizzando il metodo statistico GSA (Graphical Statistic Approach) ed il metodo geostatistico della simulazione sequenziale Gaussiana (sGs). Tramite il GSA è stato possibile ripartire i dati in popolazioni e definire una media (con relativa varianza) per ognuna di esse. Con la sGs è stato possibile trattare i dati, considerando la loro distribuzione spaziale, per simulare valori per le aree prive di misurazioni; ciò ha permesso di generare delle mappe che mostrassero l'andamento dei flussi e la geometria della struttura del degassamento diffuso (Diffuse Degassing Structure, DDS; Chiodini et al., 2001). Infine i dati ottenuti sono stati confrontati con i risultati di precedenti studi e si è messo in relazione la geometria e l'intensità di degassamento con la geologia strutturale dell'area flegrea indagata.

Web Mapping: dai GIS ai sistemi per la geolocalizzazione

L'elaborato tratta dell'evoluzione dei sistemi di raccolta dati geografici e mappatura grazie all'utilizzo delle tecnologie informatiche e di come sia cambiato il loro utilizzo nel corso del tempo e l'utenza che ne fa uso. Viene anche trattata in maniera tecnica la struttura che compone uno di questi sistemi per permettere l'interazione via web con una mappa digitale. Si effettuano inoltre ipotesi su possibili sviluppi futuri di tali tecnologie.

Percutaneous access of the epicardial space for mapping ventricular and supraventricular arrhythmias in patients with and without prior cardiac surgery

There is a paucity of data on the success rates of achieving percutaneous epicardial access in different groups of patients.