1,727,994 research outputs found
Premessa a Rispettare le regole. La socializzazione normativa nelle famiglie e nella scuola
No full textL’obiettivo del volume è di presentare alcune riflessioni sul rapporto tra contesti di socializzazione e norme. Il tema del rapporto tra socializzazione e costruzione/trasgressione delle norme viene affrontato a partire dall’analisi di diversi contesti: scolastico, familiare e del gruppo dei pari.
Partendo da esperienze di ricerca promosse nell’Università di Urbino – le ricerche sul copiare a scuola coordinate da Marcello Dei e le ricerche sulle pratiche disciplinari in famiglia coordinate da Guido Maggioni – e allargando al contributo di altri studiosi di bambini e adolescenti, il volume intende approfondire i diversi momenti della socializzazione normativa. Dall’interazione bambino-genitore e dall’ambito familiare l’analisi si estende ai gruppi dei pari, con particolare riferimento alle forme di apprendimento e di rapporto con le norme, le regole e le forme di autorità che si realizzano nei contesti educativ
Kudacoryne Maggioni 2021, gen. nov.
No full textKudacoryne Maggioni gen. nov. http://zoobank.org/ urn:lsid:zoobank.org:act: 8BF43568-3611-402F-A24D-C54B060AA119 Diagnosis: Hydroids like in Sphaerocoryne; medusae unknown. Genetic diagnosis: 45 molecular diagnostic characters differentiate Kudacoryne from other genera in the family, specifically 12 in the 16S, 17 in the COX1, 14 in the COX3, 1 in the 18S, and 1 in the 28S (table 2). Etymology: The generic name derives from the combination of ‘Kuda’, meaning ‘little’ in Divehi (Maldivian) language, reflecting the smaller size of polyps compared to other sphaerocorynid species, and - coryne. Type species: Kudacoryne diaphana Maggioni sp. nov.Published as part of Maggioni, Davide, Schuchert, Peter, Arrigoni, Roberto, Hoeksema, Bert W., Huang, Danwei, Strona, Giovanni, Seveso, Davide, Berumen, Michael L., Montalbetti, Enrico, Collins, Richard, Galli, Paolo & Montano, Simone, 2021, Integrative systematics illuminates the relationships in two sponge-associated hydrozoan families (Capitata: Sphaerocorynidae and Zancleopsidae), pp. 487-525 in Contributions to Zoology 90 on page 500, DOI: 10.1163/18759866-BJA10023, http://zenodo.org/record/834332
Gonaxiidae Maggioni 2021, fam. nov.
No full textFamily Gonaxiidae Maggioni, fam. nov. <p> <b>Diagnosis.</b> Hydroids forming upright colonies of macroscopic size built up along a fascicled, simple or branched main stem. Cladia biseriate, alternating along the stem and, when present, its branches forming either simple-pinnate or multi-pinnate, planar colonies with straight stems, or pinnate cladia-bearing branches spirally arranged along a strongly geniculate stem. Division into internodes often indistinct in both stems and cladia; usually a hydrotheca per equivalent of cladial internode; on stems, two successive cladia separated by three consecutive hydrothecae, of which the proximal most is axillar; cladia borne on short stem apophyses. Hydrothecae flask-shaped to tubular, immersed for a varied degree into their corresponding internodes, free part variably projecting out- to upward, aperture distal, transverse, margin provided with three rounded cusps (two latero-adaxial, one abaxial) separated by shallow embayments, operculum composed of three triangular flaps. Gonothecae arising from the component tubes of the stems, either club-shaped and fully free above their origin, or long, tubular, partly adnate to the stem proximally and diverging distally, in all cases provided apically with a rounded, transverse aperture, broader in females than in males.</p>Published as part of <i>Galea, Horia R. & Maggioni, Davide, 2021, An integrative study of some species of Gonaxia Vervoort, 1993 from off New Caledonia, with the establishment of Gonaxiidae as a new family of thecate hydroids (Cnidaria: Hydrozoa), pp. 401-429 in Zootaxa 5004 (3)</i> on page 404, DOI: 10.11646/zootaxa.5004.3.1, <a href="http://zenodo.org/record/5120645">http://zenodo.org/record/5120645</a>
Bounding Multistage Stochastic Programs: A Scenario Tree Based Approach
Full text linkMultistage mixed-integer stochastic programs are among the most challenging optimization problems combining stochastic programs and discrete optimization problems. Approximation techniques which provide lower and upper bounds to the optimal value are very useful in practice. In this paper we present a critic summary of the results in Maggioni et al., J Optim Theory Appl 163:200–5 229 (2014), [4] and in Maggioni et al., Comput Manag Sci 13:423–457 (2016), [5] where we consider bounds based on the assumption that a sufficiently large discretized scenario tree describing the problem uncertainty is given but is unsolvable. Bounds based on group subproblems, quality of the deterministic solution and rolling-horizon approximation will be then discussed and compared
Aplidium marplatensis Maggioni & Tatian
No full textAplidium marplatensis Maggioni & Tatián (sp. nov. present work) Material examined: one colony; net; -37.9942 lat. -55.2175 long. (station 1); 250 m; 10 August 2012 (Figures 3 A–C). Holotype: MZUCVI0193. Etymology: in reference to the Mar del Plata submarine canyon, the geographic location where the species was collected. The colony consists of an ovoid mass, attached to the substrate by a small area with rhizoids. It measures 4.6 cm in diameter by five cm in height. The tunic is smooth and free of epibionts or external particles. When alive, the color of the tunic is grayish-brown and the zooids are white (Fig. 3A). After fixation in formalin, the tunic and zooids turn opaque yellow. Zooids of variable sizes are arranged irregularly around inconspicuous cloacal apertures. The total length varies from 0.3 cm to 1.4 cm. The thorax and the abdomen are the smallest parts of the body, both being about the same size. The post-abdomen is the longest section of the body, reaching a maximum length of 1.1 cm. The oral aperture has six lobes, although some zooids show a smooth edge. The atrial aperture is wide, leaving almost half of the pharynx exposed. It extends from the second to the sixth row of stigmata and is surrounded by a series of five to six thin and circular fine muscles. The atrial languet is wide, medium sized and trifid. Thorax and abdomen show six to eight fine longitudinal muscles on each side. The pre-pharyngeal band is thin and circular. The neural ganglion is small and approximately spherical. There are 14 rows of stigmata that contain ten to 12 stigmata per half row. There is a long and thick esophagus, it widens at its anterior end and narrows when it reaches the stomach. Its course to the stomach may be straight or may present a sharp curve inwards. The stomach is rectangular with rounded edges and presents four to five well marked longitudinal and straight folds. On average, it measures 1.7 mm long by 1.1 mm wide. The intestine also has thick walls. After the stomach, it widens and forms a first pearshaped, sometimes spherical, swelling. Then, it makes a closed turn dorsal and posterior, opening to a second slightly larger swelling. When the ascending branch of the gut loop reaches the level of the stomach, the intestine recovers its initial width and continues its vertical trajectory towards the atrial aperture. The anal border is bilobed and opens at the level of the eighth row of stigmata, just at the lower edge of the atrial aperture. In mature zooids, the gonads are located a short distance from the pole of the gut loop. There are four to six rounded and small oocytes, arranged in a semi-spherical ovary at the beginning of the post-abdomen. Directly under the ovary, testes are arranged in longitudinal rows containing 19 to 30 small and spherical follicles that can fill the first half of the length of the post-abdomen. In more mature zooids, testes are arranged in one or two long longitudinal rows. In less mature zooids, with shorter post-abdomens, testicular follicles are smaller and densely packed. The vas deferens bends several times over the ovary; it then turns dorsal and vertical along the abdomen and part of the thorax and ends at the same level as the anus. The atrial cavity contains one to two developing larvae. The average trunk size of the most mature larvae is one mm long and 0.6 mm wide. The larvae have an otolith and an ocellus. There are three adhesive organs arranged in a single line with two anterior ampullae alternating between them and three lateral ampullae on each side, directly adjacent to the most distal adhesive organs. No epidermal vesicles were observed. Remarks. The genus Aplidium is the most numerous of the Polyclinidae family, with 278 species described to date. This diversity is also found in the deep-sea, with 19 representatives of deep-water Aplidium. However, in the Argentine Basin only 3 deep species of this genus have been recorded. They are: Aplidium effrenatum (Herdman, 1886), Aplidium va r iabile (Herdman, 1886) and Aplidium falklandicum Millar, 1960. Aplidium effrenatum was described in the 19 th century (Herdman 1886) and has not been collected ever since. On the other hand, A. variabile has been collected several times in the Sub-Antarctic area around the tip of South America and Antarctica. Monniot & Monniot (1976; 1985) recorded two additional specimens of Aplidium. However, they could only identify them up to genus level. The three species of Aplidium cited for the deep waters of the South West Atlantic differ from Aplidium marplatensis Maggioni & Tatián (sp. nov. present work) mainly due to the presence of a wide atrial aperture. Although the original and unique description of Aplidium effrenatum (Herdman, 1886) is incomplete, it allows to characterize A. effrenatum as a different species from the current one. Unlike the colony of A. marplatensis Maggioni & Tatián (sp. nov. present work), the colony of A. effrenatum is thin and encrusting. Its color is described as dull reddish-brown or dark gray-brown. In addition, the tunic was found completely embedded with grains of sand. Finally, the absence of an atrial languet definitively separates A. effrenatum from A. marplatensis Maggioni & Tatián (sp. nov. present work). ……continued on the next page Aplidium variabile (Herdman, 1886) is a well-known Sub-Antarctic species. Unlike A. marplatensis Maggioni & Tatián (sp. nov. present work), the colony of A. variabile is often attached to the substrate through a peduncle. Its color, when alive, is pale yellow. In addition to the length of the atrial aperture, the other character that strongly distinguishes this species from A. marplatensis Maggioni & Tatián (sp. nov. present work) is the number of stomach folds: while A. variabile shows 12–16, A. marplatensis Maggioni & Tatián (sp. nov. present work) presents only five to six. Aplidium falklandicum Millar, 1960 is similar to Aplidium marplatensis Maggioni & Tatián (sp. nov. present work) in several general aspects of the colony and the zooid. However, both differ in the following characters: the color of the tunic when alive; the size and position of the atrial aperture; the size and shape of the atrial languet; the position of the anus in relation to the anal border; and the structures present in the larvae. Moreover, the distribution of A. falklandicum is restricted to Sub-Antarctic and Antarctic waters. Aplidium marplatensis Maggioni & Tatián (sp. nov. present work) clearly belongs to a group of southern Aplidium species characterized by the presence of five stomach folds. This group includes the previously mentioned A. falklandicum and A. effrenatum. It also includes the Antarctic species Aplidium aurorae (Harant & Vernières, 1938), Aplidium balleniae Monniot C. & Monniot F., 1983 and Aplidium circumvolutum (Sluiter, 1900), the three of which share with A. marplatensis Maggioni & Tatián (sp. nov. present work) the presence of a large atrial aperture, a feature not found in any other species of Aplidium (although the zooids of A. balleniae can also show atrial apertures of small or medium size). The differences among these southern five-folded stomach Aplidium species are summarized in Table 2.Published as part of Maggioni, Tamara, Taverna, Anabela, Reyna, Paola B., Alurralde, Gastón, Rimondino, Clara & Tatián, Marcos, 2018, Deep-sea ascidians (Chordata, Tunicata) from the SW Atlantic: species richness with descriptions of two new species, pp. 1-28 in Zootaxa 4526 (1) on pages 5-10, DOI: 10.11646/zootaxa.4526.1.1, http://zenodo.org/record/261135
La "Legenda Aurea" tra modelli e traduzioni. Una storia testuale e alcune questioni filologiche
No full textIntervento interdisciplinare sul ruolo del testo della Legenda Aurea contenuto nel ms. n. 1008 della B.M. di Tours, che si rivela significativo alla luce dei processi scrittori e traduttori realizzati all'interno di uno stesso atelier, dal quale proviene anche il ms. N 76 della Biblioteca Ambrosiana di Milano, che fa parte di una famiglia autorevole nella recente edizione del testo latino di G.P. Maggioni
Introduzione a Studiare @ Urbino
No full textsono presentati in queste pagine i principali risultati del progetto di ricerca “Studiare @ Urbino” realizzato nel 2011, utilizzando una pluralità di fonti e varie tecniche di raccolta dei dati, con l’obiettivo di focalizzare il rapporto degli studenti di Urbino con le strutture universitarie e con la città
Il complicato mestiere del genitore tra ieri e oggi
No full textL'autore intende inserire le tematiche sulla socializzazione normativa su cui si concentrano le altre parti del volume in un quadro di riferimento più ampio, che include in primo luogo le grandi trasformazioni della struttura e delle tipologie delle famiglie operatesi negli ultimi decenni, nonché i cambiamenti intervenuti a livello socio-economico e culturale. Si tratta di processi di ampia portata, che in parte sono state stimolate dagli apporti analitici e critici delle varie discipline che si sono occupate di famiglie e di infanzia: la sociologia, le scienze dei servizi sociali, la psicologia, la pedagogia, il diritto. Nello scenario sociale tipico delle società della tarda modernità, orientate al futuro, nelle quali la tradizione presenta una forza sempre meno vincolante, questi cambiamenti, inclusi le diverse “culture degli esperti” che vi sono associate, hanno introdotto elementi di incertezza e di ansia nel modo di vivere la genitorialità, sino a portare molti genitori a dubitare della legittimità stessa dei loro sforzi educativi. Nell’opinione pubblica e tra gli esperti è stata da più parti rivalutata l’importanza della autorità genitoriale, come fondamento del rapporto educativo e della vita familiare. Questo bisogno di ordine va preso sul serio, non rimosso e nemmeno osteggiato in nome di una cultura educativa che si vuole progressista e democratic
Studiare a Urbino nel 1982
No full textIl testo dà conto del notevole contributo di conoscenza fornito da tre tesi di laurea discusse nel 1982 sulla condizione e l'esperienza di vita degli studenti “fuori sede” dell'università di Urbino, con particolare riferimento all'uso del tempo, alla socializzazione femminile ed alla vita negli allora nuovissimi collegi universitari
Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
No full textFIGURE 12. Distribution of the stem nematothecae in Sciurella cylindrica (Kirchenpauer, 1876). A, B. Two portions of a stem, each showing a few successive internodes and their nematothecae. C–F. Close-ups of four cladial apophyses seen laterally, showing variation in the number of their associated nematothecae. All from sample MHNG-INVE-0137407. Scale bars: C–F = 200 µm; A, B = 500 µm.Published as part of Galea, Horia R., Maggioni, Davide & Di Camillo, Cristina G., 2021, Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study, pp. 1-32 in Zootaxa 5040 (1) on page 17, DOI: 10.11646/zootaxa.5040.1.1, http://zenodo.org/record/553088
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