583 research outputs found
Otitoma tropispira Morassi & Nappo & Bonfitto 2017, sp. nov.
No full textOtitoma tropispira sp. nov. urn:lsid:zoobank.org:act: 85D8CD51-3521-4BEB-B393-80F55132AAF6 Fig. 3 M–R Etymology The specific epithet comes from a combination of the Greek ‘ tropis ’ (a keel) and the Latin ‘ spira ’ (spire), alluding to the strong spiral sculpture of the keel-like cords. Type material Holotype NEW CALEDONIA: BATHUS 2, Stn DW 747, S of New Caledonia, 22°30 ′ S, 166°260 ′ E, 574 m (MNHN IM-2000-32591). Paratypes NEW CALEDONIA: paratype 1, same data as holotype (MNHN IM- 2000-32592); paratypes 2 (MZB 60212) and 3 (MNHN IM- 2000-32593), SW of New Caledonia, Boulari Passage, 400 m; paratype 4, BATHUS 4, Stn CP946, N of New Caledonia, 20°34 ′ S, 164°58 ′ E, 386–430 m (MNHN IM- 2000- 32594); paratype 5, BATHUS 1, Stn DW683, off E coast, 20°35 ′ S, 165°07 ′ E, 380–400 m (MNHN IM- 2000-32595); paratype 6, BATHUS 2, Stn DW758, S of New Caledonia, 22°18 ′ S, 166°11 ′ E, 377– 386 m (MNHN IM- 2000-32596). Description Shell fusiform (b/l 0.34–0.36; a/l 0.42–0.50). Teleoconch of 6–7 convex whorls with periphery at middle on earlier whorls, posterior to mid-whorl on later ones. Suture moderately deep, bordered by a prominent sub-sutural fold bearing a spiral cord, demarcated by a distinctly concave sutural ramp. Sculpture consisting of widely-spaced, narrow, keel-like spiral cords. Four earliest teleoconch whorls with a sub-sutural cord and two cords on abapical half of whorl, increasing to 3 on fifth and 4 on later two whorls. Last whorl with 11–15 spiral cords on base and rostrum. Sutural ramp with a narrow weak cord on its abapical part, becoming stronger on later two whorls (in paratype 5 (MNHN IM-2000-32595) comparable in strength to main spiral cords). Interspaces between spiral cords sculptured by numerous, very fine and faint spiral threads varying in number (up to about 13) (Fig. 3P). Axial sculpture represented only by incremental lines, more evident on sutural ramp, where they are arcuate in conformity with curvature of anal sinus. Aperture rather narrow, lanceolate, strongly constricted at entrance to siphonal canal. Siphonal canal long for genus, not notched terminally. Inner lip with moderately thin callus, parietal region with a pad formed at intersection with outer lip. Outer lip edge sharp, preceded by a wide, strong, rounded varix. Stromboid notch distinct, deep. Anal sinus deep, U-shaped, with strongly constricted opening. Protoconch conical, of 2½–2¾ smooth whorls. Protoconch diameter 0.81–0.92 mm (Fig. 3 Q–R). Color white or cream, with yellowish-orange spiral cords. Dimensions Holotype: 16.3 × 5.7 mm, aperture height 8.1 mm. Paratype 2 (largest specimen): 18.8 × 6.4 mm, aperture height 8.5 mm; paratype 6 (smallest specimen): 14.3 × 5.0 mm, aperture height 6.8 mm. Remarks Otitoma tropispira sp. nov. is distinguished from its described congeners by its rather large size (attains about 19 mm in maximum length) and the sculpture of its keel-like spiral cords, somewhat reminiscent of members of the pseudomelatomid genus Turridrupa Hedley, 1922. However, members of that genus have a weak to absent parietal pad, which does not constrict entrance to the anal sinus, and the interior part of the aperture is sculptured by spiral plicae. Furthermore, the protoconch of O. tropispira sp. nov. is smooth, while that of Turridrupa bears axial riblets on the last 1½–2 whorls (Kilburn 1988; Powell 1966).Published as part of Morassi, Mauro, Nappo, Andrea & Bonfitto, Antonio, 2017, New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean, pp. 1-30 in European Journal of Taxonomy 304 on pages 12-13, DOI: 10.5852/ejt.2017.304, http://zenodo.org/record/382582
Time discretisation and rate of convergence for the optimal control of continuous-time stochastic systems with delay
No full textPubblicato on line come preprint dell'A.M.A.M.E.F Advanced Mathematical Methods for Finance (http://150.146.2.4/amamef/Preprints/TFB27.pdf)
Successivamente pubblicato su Applied Mathematics and Optimizatio
Time discretisation and rate of convergence for the optimal control of continuous-time stochastic systems with delay
No full textWe study a semi-discretisation scheme for stochastic optimal control problems whose dynamics are given by controlled stochastic delay (or functional) differential equations with bounded memory. Performance is measured in terms of expected costs. By discretising time in two steps, we construct a sequence of approximating finite-dimensional Markovian optimal control problems in discrete time. The corresponding value functions converge to the value function of the original problem, and we derive an upper bound on the discretisation error or, equivalently, a worst-case estimate for the rate of convergence
Otitoma hadra Morassi & Nappo & Bonfitto 2017, sp. nov.
No full textOtitoma hadra sp. nov. urn:lsid:zoobank.org:act: D699962E-3975-4973-A6AB-047323F41C8B Fig. 4 P–U Etymology The specific epithet refers to the Greek ‘ hadros ’ (thick), alluding to the small but very thick shell. Type material Holotype NEW CALEDONIA: BATHUS 4, Stn DW 882, N of New Caledonia, 22°02 ′ S, 165°56 ′ E, 250–350 m (MNHN IM-2000-32603). Paratype NEW CALEDONIA: same data as holotype (MNHN IM- 2000-32604). Description Shell somewhat biconic (b/l 0.41–0.48; a/l 0.56–0.57). Teleoconch of 3–3¼ weakly and evenly convex whorls, with a slight shoulder at mid-whorl height. Suture shallow, bordered by a weakly prominent sub-sutural fold followed by a shallowly concave sutural ramp. Axial sculpture of opisthocline ribs, subequal to or narrower than intercostal spaces, abruptly ending at level of abapical side of sutural ramp (Fig. 4S). 14–16 axial ribs on penultimate and 18–19 ribs on last whorl. First teleoconch whorl with 3 spiral cords between the sutural ramp, sutures of following whorl increasing to 4–5 on penultimate and last whorl. Spiral cords closely-spaced, not plicate where crossing axial ribs. Sutural ramp with 1 spiral cord increasing to 2 cords on later two whorls. Last whorl with 19–22 main spiral cords and 1 occasional secondary cord in interspaces on base and rostrum. Interspaces between cords lacking secondary sculpture. Aperture rather narrow, ovate, constricted at entrance to siphonal canal. Siphonal canal short, relatively wide. Inner lip covered with a thick callus. Outer lip edge sharp, preceded by a strong, wide varix. Stromboid notch weak. Anal sinus relatively broad and moderately deep, a C-shaped notch, its entrance weakly constricted. Protoconch domed, of up to 1½ smooth whorls, diameter 1.04– 1.09 mm. Protoconch white, teleoconch yellowish-white flecked with orange-yellow on sutural ramp and along some axial ribs on last whorl. Dimensions Holotype: 5.1 × 2.1 mm, aperture height 2.85 mm. Paratype: 4.7 × 2.25 mm, aperture height 2.7 mm. Remarks Otitoma hadra sp. nov. is readily distinguished from its described congeners by its rather small, thick shell (about 5 mm in maximum length), with a relatively large protoconch and well developed sculpture (both spiral and axial).Published as part of Morassi, Mauro, Nappo, Andrea & Bonfitto, Antonio, 2017, New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean, pp. 1-30 in European Journal of Taxonomy 304 on pages 16-17, DOI: 10.5852/ejt.2017.304, http://zenodo.org/record/382582
Otitoma boucheti Morassi & Nappo & Bonfitto 2017, sp. nov.
No full textOtitoma boucheti sp. nov. urn:lsid:zoobank.org:act: 418A39B7-1A9A-472C-BD4A-C55004992489 Fig. 4 A–F Etymology Named after Dr. Philippe Bouchet of the Department of Systematics and Evolution, MNHN, Paris. Type material Holotype FIJI ISLANDS: MUSORSTOM 10, Stn CP 1366, S of Viti Levu, 18°12.4 ′ S, 178°33.1 ′ E, 149–168 m (MNHN IM-2000-32597). Description Shell fusiform (b/l 0.33; a/l 0.52). Teleoconch of 6 whorls, moderately convex, with a slightly angular shoulder posterior to mid-whorl. Suture shallow, bordered by a narrow and weak sub-sutural cord and a shallowly concave sutural ramp. Axial sculpture absent. Spiral sculpture of widely-spaced and rather narrow cords. Three earliest teleoconch whorls with sub-sutural fold and two cords on abapical half of whorl; fourth whorl with two additional cords, one secondary cord at abapical margin of sutural ramp and one main cord margining whorl base. Penultimate whorl with three main and four weaker cords, increasing in strength in such a way that there are 7 cords of nearly uniform strength on last whorl (Fig. 4C). Last whorl with 21 spiral cords on base and siphonal canal. Interspaces between cords sculptured by 2–5 spiral threads (Fig. 4D). Aperture rather narrow and ovate, constricted at entrance to siphonal canal. Siphonal canal long for genus, not notched terminally. Inner lip with moderately thin callus, parietal region with a pad formed at junction of outer lip. Outer lip edge sharp, preceded by a wide, low, rounded varix. Stromboid notch moderately deep. Anal sinus deep, U-shaped, with constricted opening. Protoconch narrowly conical, of 2¾ smooth whorls, diameter 0.76 mm (Fig. 4 E– F). Color yellowish-white. Dimensions Holotype: 14.9 × 5.0 mm, aperture height 7.7 mm. Remarks In its large size (up to about 15 mm in length) and yellowish-white shell, Otitoma boucheti sp. nov. may superficially resemble O. tropispira sp. nov., but is readily distinguished from the latter in having more numerous, but much narrower and less prominent spiral cords, and a longer siphonal canal.Published as part of Morassi, Mauro, Nappo, Andrea & Bonfitto, Antonio, 2017, New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean, pp. 1-30 in European Journal of Taxonomy 304 on pages 13-15, DOI: 10.5852/ejt.2017.304, http://zenodo.org/record/382582
Otitoma sororcula Morassi & Nappo & Bonfitto 2017, sp. nov.
No full textOtitoma sororcula sp. nov. urn:lsid:zoobank.org:act: 112C802A-78C0-47EB-9CF6-50306954AAD4 Fig. 2 A–I Etymology The specific epithet comes from the Latin ‘ sororcula ’, meaning ‘a little sister’, alluding to its strong resemblance to Otitoma kwandangensis (Schepman, 1913). Type material Holotype FIJI ISLANDS: MUSORSTOM 10 Stn, CP 1323, Bligh Water, 17°16.1 ′ S, 177°45.7 ′ E, 143–173 m (MNHN IM-2000-32582). Paratypes FIJI ISLANDS: paratype 1, same data as holotype (MZB 60210); paratype 2, MUSORSTOM 10, Stn DW1329, Bligh Water, 17°19.3 ′ S, 177°47.4 ′ E, 102–106 m (MNHN IM- 2000-32583); paratypes 3–4, MUSORSTOM 10, Stn DW1365, SE of Viti Levu, 18°12.7 ′ S, 178°32.4 ′ E, 295–302 m (MNHN IM- 2000-32584); paratypes 5–6, MUSORSTOM 10, Stn DW1359, SE of Viti Levu, 17°49.7 ′ S, 178°47.8 ′ E, 183–188 m (MNHN IM- 2000-32585); paratype 7, MUSORSTOM, 10 Stn DW1356, SE of Viti Levu, 17°50.3 ′ S, 178°48.0 ′ E, 203–208 m (MNHN IM- 2000-32586). Additional material FIJI ISLANDS: 2 spms, MUSORSTOM 10, Stn CP1323, Bligh Water, 17°16.1 ′ S, 177°45.7 ′ E, 143– 173 m; 4 spms, MUSORSTOM 10, Stn DW1329, Bligh Water, 17°19.3 ′ S, 177°47.4 ′ E, 102– 106 m. Description Shell claviform-fusiform (b/l 0.36–0.44; a/l 0.43–0.50), somewhat pupoid. Teleoconch of 3½–4¾ convex whorls with median periphery. Suture distinct, bordered by a prominent spiral cord, demarcated by a distinctly concave sutural ramp. Axial ribs rather straight, opisthocline and distinctly rounded, broader than intervals between them, developed mainly in peripheral region, becoming much weaker to obsolete and slightly arcuate on sutural ramp. 8–11 axial ribs on penultimate whorl, 11–14 on last whorl. Spiral sculpture of prominent, narrow, widely-spaced spiral cords, becoming conspicuously nodulose where crossing axial ribs (Fig. 2F). Earlier 1–2 whorls with a subsutural cord and two cords on abapical part of whorl, increasing to 3 and 4 on penultimate and last whorl, respectively. Sutural ramp with 1–2 weak spiral cords on abapical side. Last whorl with 9–12 spiral cords on base and rostrum. Interspaces between spiral cords lacking secondary sculpture (Fig. 2G). Aperture rather narrow and almost linear, but strongly constricted at entrance to siphonal canal. Siphonal canal short, relatively wide, expanding slightly distally. Inner lip with moderately thick callus with distinct parietal pad. Outer lip edge sharp, preceded by a wide, low, rounded varix. Stromboid notch distinct. Anal sinus rather deep, apically rounded, asymmetrically U-shaped, with strongly constricted opening. Protoconch papilliform, of ¼–1½ whorls (Fig. 2 H–I), diameter 0.62–0.89 mm. Color white or yellowish-white with an amber-orange band bordering the adapical suture. Dimensions Holotype: 6.0 × 2.3 mm, aperture height 2.9 mm. Paratype 1 (largest specimen): 6.6 × 2.4 mm, aperture height 3.0 mm; paratype 7 (smallest specimen): 4.3 × 1.9 mm, aperture height 1.85 mm. Remarks Among its described congeners, Otitoma sororcula sp. nov. most closely resembles Otitoma kwandangensis (Schepman, 1913) (Fig. 2 J–K). The two species are nearly indistinguishable from each other in teleoconch morphology, but differ in protoconch structure, which in O. sororcula sp. nov. is papilliform, of 1¼–1½ whorls while in Otitoma kwandangensis it “is broken at the tip and the preserved part consists of 2.7 volutions” (Shuto 1970: 166, plate X, fig. 19). Otitoma sororcula sp. nov. is remarkably smaller than the type specimen of Drillia kwandangensis (4.3–6.6 mm vs 8.2 mm, mean 5.15 mm in length) and differs in color (white or yellowish-white with an amber-orange band bordering the adapical suture and tinged with the same color on the adapical part of the base vs a uniform red-brown). The new species is comparable to Otitoma timorensis (Schepman, 1913), in protoconch features and shape, but judging from the photographs of the holotype ZMA 138096 (Fig. 2 L–N), Otitoma sororcula sp. nov. differs in lacking a secondary spiral sculpture, having a different number of spiral cords (3 instead of 2 on penultimate whorls), which are more distinctly nodulous where crossing the axial ribs, and in having broader and more bulging axial ribs.Published as part of Morassi, Mauro, Nappo, Andrea & Bonfitto, Antonio, 2017, New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean, pp. 1-30 in European Journal of Taxonomy 304 on pages 7-9, DOI: 10.5852/ejt.2017.304, http://zenodo.org/record/382582
Otitoma philpoppei Morassi & Nappo & Bonfitto 2017, sp. nov.
No full textOtitoma philpoppei sp. nov. urn:lsid:zoobank.org:act: D0F62828-F675-448A-903A-73AB90576A4A Fig. 6 I–N Etymology This taxon is dedicated by one of the authors (AN) to his friend the malacologist Philippe Poppe (Lapu Lapu, Philippines). Type material Holotype PHILIPPINES: Mactan Island, 200 m, from local fishermen (MNHN IM-2000-32609). Paratype FIJI ISLANDS: BORDAU 1, Stn DW1464, 18°09 ′ S, 178°38 ′ W, 285–300 m (MNHN IM- 2000-32610). Description Shell cylindric-pupoid (b/l 0.39–0.40; a/l 0.55–0.59). Teleoconch consisting of 2¾–3½ whorls which are weakly and evenly convex. Last whorl with a shallowly excavated base. Whorls separated by a shallow suture, bordered by 2 closely spaced spiral cords, but lacking a distinct sub-sutural fold. Subsutural ramp shallow and concave. First teleoconch whorl with 2 closely spaced cords at suture, 1 weak cord on sutural ramp and 3 spiral cords on abapical part of whorl. On following whorl additional cords develop on sutural ramp, including 2–3 spirals more prominent than others, with 8–9 spiral cords below sutural ramp, increasing to 14–15 on last whorl. Spiral cords closely spaced, somewhat irregular in strength, rendered plicate by dense, moderately coarse incremental growth lines covering entire surface (Fig. 6L). Base sculptured by 14–15 spiral cords with 1 fine interstitial thread between. Axial sculpture restricted to penultimate whorl, consisting of irregularly spaced, opisthocline axial ribs, narrower than intercostal spaces, extending from suture to suture, but becoming narrower and arcuate on sutural ramp (about 13 on penultimate whorl in holotype). Aperture narrow and almost linear, but constricted at entrance to siphonal canal. Siphonal canal wide, expanding slightly distally, not notched. Inner lip covered with a thin callus and weak parietal pad. Outer lip preceded by a wide, low and rounded varix, its edge sharp, with a relatively shallow (for genus) stromboid notch. Anal sinus moderately deep, rounded, asymmetrically U-shaped, its entrance only slightly constricted by parietal pad. Protoconch domed, of 2½–2¾ whorls, smooth (Fig. 6 M–N), diameter 0.89–0.90 mm. Color white or white with three light brownish orange bands (on sutural ramp, on base of last and penultimate whorl and on base) and aperture edged with brownish orange. Dimensions Holotype: 6.7 × 2.7 mm, aperture height 3.7 mm. Paratype: 5.6 × 2.2 mm, aperture height 3.3 mm. Remarks Otitoma philpoppei sp. nov. belongs to a morphologically distinctive group, which includes O. kecil and O. vitrea, that are rather small (about 5 mm in length), have a pupoid shape, and have similar protoconch features. The new species is comparable to O. vitrea from Mindanao, Philippines, but differs in having a much more abbreviated shell such that the last whorl represents nearly 60% of total height, and possesses more numerous raised spiral cords. Furthermore, O. philpoppei sp. nov. has distinct axial ribs on the penultimate whorl, while O. vitrea lacks axial sculpture. Otitoma philpoppei sp. nov. differs distinctly from O. kecil in its proportions (b/l 0.39–0.40 vs 0.29; a/l 0.55–0.59 vs 0.44), the presence of axial ribs on the penultimate whorl (axial sculpture is absent in O. kecil) and the type of spiral sculpture (spiral cords closely-set and low rather than narrow, widely spaced and prominent as in O. kecil).Published as part of Morassi, Mauro, Nappo, Andrea & Bonfitto, Antonio, 2017, New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean, pp. 1-30 in European Journal of Taxonomy 304 on pages 24-25, DOI: 10.5852/ejt.2017.304, http://zenodo.org/record/382582
Libraries and the system of information provision in the 1930s' United States: the transformation of technology, access, and policy
No full textExamination of developments in technology, access, and policy reveals that American librarianship and the wider system of information provision underwent profound and far-reaching changes—a transformation—during the 1930s. With regard to technology, the 1930s saw the widespread adoption of microfilm, heralded by its advocates as a revolutionary tool that would transform information preservation and dissemination. The number of outlets for library services increased markedly as information was brought to more people, often in creative ways, and on an enlarged scale. Finally, policymaking for libraries, and information provision more broadly, assumed greater prominence. New federal agencies were established, new statistical series offered, and existing information programs were expanded.
Librarianship has a long history of critical engagement in times of crisis. Using archival, primary, and secondary sources, I examine the 1930s using the system of information provision as a lens. While the 1930s’ US has been well-traversed by many scholars, no one has foregrounded the system of information provision as a site of transformation. I consider the
system in its entirety, using technology, access, and policy as the key vectors of evidence of this transformation. The role of librarians is consistently foregrounded. Many librarians of the 1930s eagerly embraced visionary approaches with regard to imagining the future of libraries, and they were not afraid to act boldly on a range of economic, political, and cultural issues.
“Transformation” alludes to different things depending on the context: sometimes it meant redefinition, sometimes it meant expansion, and sometimes a bit of both. The “system of information provision” includes but is not limited to librarianship. Although deeply concerned with the pursuits of libraries and librarians, my dissertation research reveals how library work intersected with that of historians, archivists, documentalists, and with other activities involving access to and preservation of information resources. “Information provision” is intended to gesture at this wider range of associated precepts and practices.
Historians make some room for the 1930s, but leave pressing questions: what were the relationships between changes in technology, access, and policy in librarianship during the
1930s; and how were librarians agents in this overall process? This dissertation is an attempt to engage directly with these questions.Submission published under a 24 month embargo labeled 'U of I only', the embargo will last until 2017-05-01The student, Caroline Nappo, accepted the attached license on 2015-04-15 at 16:05.The student, Caroline Nappo, submitted this Dissertation for approval on 2015-04-15 at 16:42.This Dissertation was approved for publication on 2015-04-21 at 17:06.DSpace SAF Submission Ingestion Package generated from Vireo submission #7875 on 2015-07-22 at 14:17:55Made available in DSpace on 2015-07-22T22:33:24Z (GMT). No. of bitstreams: 2
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Previous issue date: 2015-04-21Embargo set by: Seth Robbins for item 79859
Lift date: 2017-07-22T22:34:16Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemAuthor name changed from 'Nappo, Catherine Marie' to 'Nappo, Catherine' by request of the author. Change made by [email protected] on 2015-10-15U of I Only Restriction Lifted for Item 79859 on 2017-07-23T09:15:20Z
Il volontariato come attore di sussidiarietà
No full textQuesto contributo si inserisce proprio nel dibattito che, da qualche anno, si articola nel nostro Paese, circa la potenzialità e la propensione del volontariato a svolgere un ruolo adeguato nell’ambito della programmazione e attuazione delle politiche locali volte alla soddisfazione dei bisogni in senso lato del territorio.
In particolare, l’obiettivo di questo lavoro è indagare sulla relazione che sussiste tra il principio di sussidiarietà orizzontale, che trova fondamento a livello costituzionale nell’art. 118, comma 4, e il volontariato. In base all’art. 118, comma 4 della Costituzione “Stato, Regioni, Città metropolitane, Province e Comuni favoriscono l’autonoma iniziativa dei cittadini, singoli e associati, per lo svolgimento di attività di interesse generale, sulla base del principio di sussidiarietà”
Tra Economicità e Qualità: Le Politiche Sociali alla Sfida del Nuovo Millennio
No full textfornisce un quadro analitico di riferimento per la valutazione comparativa di modalità diverse di erogazione di alcuni servizi alla persona, che, come è noto, a seguito della crisi del modello di welfare-state tradizionale, sono sempre più spesso, delegati dal settore pubblico ad organizzazioni produttive private del “Terzo Settore”
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