Gli esemplari provenienti dal Parco Regionale della Maremma nella collezione ornitologica del Museo di Storia Naturale di Firenze

Vengono riportati i reperti ornitologici del Museo di Storia Naturale di Firenze provenienti da località attualmente comprese nei confini del Parco Regionale della Maremma. Tutti risalgono ai tempi in cui Enrico Hillyer Giglioli era il direttore della collezione vertebrati. Tra i reperti vi sono due capovaccai (Neophron percnopterus) presi sul nido e quattro calandre (Melanocorypha calandra): tali specie risultano oggi in Maremma rispettivamente estinta come nidificante e completamente estinta. Viene inoltre sottolineata l'alta percentuale di uccelli affetti da anomalie, particolarmente ricercati all'epoca

Insegnare a scrivere nel biennio della scuola secondaria di primo grado

Il contributo offre una riflessione sulle strategie e azioni didattiche utilizzate nell'insegnamento della scrittura nel biennio della scuola secondaria di primo grado. Nello specifico è presentata parte dei risultati di una ricerca biennale (2012/2014) sulla scrittura degli studenti del primo biennio della scuola secondaria di primo grado. Si tratta di dati relativi: a) alla progettazione e all'azione didattica di un gruppo docenti di Lettere che insegnano in sette scuole romane; b) all'analisi delle tracce utilizzate nei due anni da tali docenti per le prove di scrittura in classe. La scuola ha da tempo avvertito l’esigenza di un ripensamento complessivo delle modalità di insegnamento/apprendimento della lingua e delle quattro abilità linguistiche di base e, in particolare, della scrittura. In continuità con tale bisogno, i risultati mettono in luce progettualità didattiche sperimentate nella scuola e atteggiamenti di docenti, rispondendo alla esigenza di studi e contributi alla riflessione sul tema in vista di una ricaduta di natura didatticaThis paper provides a reflection on strategies and actions used in teaching writing to lower secondary school students. Specifically, this contribution focuses on some of the results of a two-year research (2012/2014) based on the analysis of writing compositions by students of the first two years of secondary school. Datas concern a) the design and action of teaching by a group of mother tongue teachers from seven schools of Rome; b) the analysis of instructions for students’written composition used in the two years from such teachers. The school has felt for long time the need to rethink its methods of teaching/learning the language and the four basic language skills, writing in particolar. In keeping with this need, the results highlight experimented educational projects in schools and attitudes of teachers, responding to the need for studies and contributions to the reflection on the issue in view of didactic effect

Track Momentum Discrimination Using Cluster Width in Silicon Strip Sensors for SLHC

The cluster width of a particle crossing a silicon strip (mini strip) detector can be exploited to measure its transverse momentum when the strips are parallel to the B field. This suggests the discrimination of the clusters widths to filter the majority of low momentum particles. Once performed directly on the detectors, such discrimination can be used both for low level trigger (L1) and for data reduction. This approach is discussed in the context of a first level trigger based on the Tracker for SLHC. The quality of the measurements and their discrimination capability are discussed with respect to the geometry of the sensors and to the detectors layout. Electronics issues and constraints are also reviewed

The riverbank filtration plant in S. Alessio (Lucca): monitoring and modeling activity within EU the FP7 MARSOL project

The riverbank filtration (RBF) scheme along the Serchio River, Lucca (Tuscany – Italy) allows abstraction of an overall amount of about 1 m3/s groundwater providing drinking water for about 300000 people of the coastal Tuscany (town of Lucca, Pisa and Livorno). Water is derived by means of an RBF scheme by a set of ten vertical wells inducing riverbank filtration into a high yield (10-2 m2/s transmissivity) sand and gravel aquifer including a downstream weir to raise river head and increasing water storage in the aquifer along the river reach. Within the framework of the MARSOL FPVII-ENV-2013 project, the Sant'Alessio well field will be used to demonstrate the sustainability, by a technical, social and market point of view, and the benefits of RBF managing versus the unmanaged option. The Serchio experimental site will involve merging existing and proved technologies, including continuous monitoring of several parameters and analytes and the development of dedicated software tools, to produce a Decision Support System (DSS) based on remote data acquisition and transmission and GIS physically-based fully distributed numerical modeling to continuously monitor and manage the well field, reducing also, prone to error, human operated activities. A set of sensors will be installed to monitor by a quantitative and qualitative point of view hydrologic variables in the river water, in the aquifer, the unsaturated zone and the wells. Data will be continuously acquired and remotely transmitted to a server where they will first be checked for consistency and then sent to a database for processing in a dedicated modelling environment included in the DSS and equipped with an alert system to inform water managers about the scheme performance and reaching limits of infiltration rates or water quality indices. The DSS along with the installed sensors, data transmission and storage tools will constitute a prototype whose potential market exploitation will be tested

Surgical Repair of Late Complications in Patients Having Undergone Primary Hypospadias Repair during Childhood: A New Perspective

Background. The repair of complications in patients who had undergone hypospadias repair is still an open problem. Patients and Methods. We conducted a retrospective study of patients treated for late complications after hypospadias repair. Study inclusion criteria were patients presenting urethral, corpora cavernosa deformity, and/or penile defects due to previous hypospadias repair. Exclusion criteria were precancerous or malignant lesions and incomplete data on personal medical charts. Preoperative evaluation included clinical history, physical examination, urine culture, residual urine measurement, uroflowmetry, urethrography, urethral sonography, and urethroscopy. The patients were classified into four different groups. Success was defined as a normal functional urethra, with apical meatus, no residual penile curvature or esthetic deformity of the genitalia. Results. A total of 1,176 patients were entered in our survey. Out of the 1,176 patients, 301 patients (25.5%) underwent urethroplasty (group 1), 60 (5.2%) corporoplasty (group 2), 166 (14.1%) urethroplasty and corporoplasty (group 3), and 649 (55.2%) complex genitalia resurfacing (group 4). Mean followup was 60.4 months. Out of the 1,176 cases, 1,036 (88.1%) were considered successful and 140 (11.9%) failures. Conclusion. The majority of patients (55.2%) with failed hypospadias repair require surgical reconstruction to fully resurfacing the glans and penile shaft

Determining the Gluon Distributions in the Proton and Photon from Two-Jet Production at HERA

Two-jet production from the direct photon contribution at HERA is a sensitive measure of the small-$x$ gluon in the proton. We propose measurements of ratios of the jet cross-sections which will clearly distinguish between gluons with or without singular behaviour at small $x$. Furthermore, we show that analogous ratio measurements for the resolved photon contribution provide a sensitive way of determining the gluon distribution in the photon.Comment: Rutherford Appleton Laboratory report RAL-93-071 7 pages 3 figs Fig2 and Fig3 included as psfile

Standardized evaluation of haptic rendering systems

The development and evaluation of haptic rendering algorithms presents two unique challenges. Firstly, the haptic information channel is fundamentally bidirectional, so the output of a haptic environment is fundamentally dependent on user input, which is difficult to reliably reproduce. Additionally, it is difficult to compare haptic results to real-world, "gold standard" results, since such a comparison requires applying identical inputs to real and virtual objects and measuring the resulting forces, which requires hardware that is not widely available. We have addressed these challenges by building and releasing several sets of position and force information, collected by physically scanning a set of real-world objects, along with virtual models of those objects. We demonstrate novel applications of this data set for the development, debugging, optimization, evaluation, and comparison of haptic rendering algorithms

Tra diritto comune, droit de police e diritto amministrativo. I limiti allo sfruttamento delle acque fluviali per uso industriale nel pensiero dei primi amministrativisti francesi

The administrative law became an indipendent science during the transition from Ancien to Nouveau Régime, but the interconnenctions between this science just at the dawn and the tradition of ius commune, instead already at its sunset, are waiting to be fully brought to light. One of the most important laboratories for the gestation of this new law sector was France during the XIX century.This paper analyses the interconnections between the French administrative science on the first half of the XIX century and thejuridical heritage of Ancien Régime, in reference to a primary economical sector in full growth, like the industrial use of river water