3,224 research outputs found
The role of ontologies in creating and maintaining corporate knowledge : A case study from the aero industry
No full textPeer reviewe
Constraint capture and maintenance in engineering design
No full textThe Designers' Workbench is a system, developed by the Advanced Knowledge Technologies (AKT) consortium to support designers in large organizations, such as Rolls-Royce, to ensure that the design is consistent with the specification for the particular design as well as with the company's design rule book(s). In the principal application discussed here, the evolving design is described against a jet engine ontology. Design rules are expressed as constraints over the domain ontology. Currently, to capture the constraint information, a domain expert (design engineer) has to work with a knowledge engineer to identify the constraints, and it is then the task of the knowledge engineer to encode these into the Workbench's knowledge base (KB). This is an error prone and time consuming task. It is highly desirable to relieve the knowledge engineer of this task, and so we have developed a system, ConEditor+ that enables domain experts themselves to capture and maintain these constraints. Further we hypothesize that in order to appropriately apply, maintain and reuse constraints, it is necessary to understand the underlying assumptions and context in which each constraint is applicable. We refer to them as “application conditions” and these form a part of the rationale associated with the constraint. We propose a methodology to capture the application conditions associated with a constraint and demonstrate that an explicit representation (machine interpretable format) of application conditions (rationales) together with the corresponding constraints and the domain ontology can be used by a machine to support maintenance of constraints. Support for the maintenance of constraints includes detecting inconsistencies, subsumption, redundancy, fusion between constraints and suggesting appropriate refinements. The proposed methodology provides immediate benefits to the designers and hence should encourage them to input the application conditions (rationales)
The role of ontologies in creating and maintaining corporate knowledge: a case study from the aero industry
No full textThe Designers’ Workbench is a system, developed to support designers in large organizations, such as Rolls-Royce, by making sure that the design is consistent with the specification for the particular design as well as with the company’s design rule book(s). The evolving design is described against a jet engine ontology. Currently, to capture the constraint information, a domain expert (design engineer) has to work with a knowledge engineer to identify the constraints, and it is then the task of the knowledge engineer to encode these into the Workbench’s knowledge base (KB). This is an error prone and time consuming task. It is highly desirable to relieve the knowledge engineer of this task, and so we have developed a tool, ConEditor+ that enables domain experts themselves to capture and maintain these constraints. The tool allows the user to combine selected entities from the domain ontology with keywords and operators of a constraint language to form a constraint expression. Further, we hypothesize that to apply constraints appropriately, it is necessary to understand the context in which each constraint is applicable. We refer to this as “application conditions”. We show that an explicit representation of application conditions, in a machine interpretable format, along with the constraints and the domain ontology can be used to support the verification and maintenance of constraints
ConEditor+: Capture and Maintenance of Constraints in Engineering Design
No full textThe Designers' Workbench is a system, developed to support designers in large organizations, such as Rolls-Royce, by making sure that the design is consistent with the specification for the particular design as well as with the company’s design rule book(s). Currently, to capture the constraint information, a domain expert (design engineer) has to work with a knowledge engineer to identify the constraints, and it is then the task of the knowledge engineer to encode these into the Workbench's knowledge base (KB). This is an error prone and time consuming task. It is highly desirable to relieve the knowledge engineer of this task, and so we have developed a tool, ConEditor+ that enables domain experts themselves to capture and maintain these constraints. The tool allows the user to combine selected entities from the domain ontology with keywords and operators of a constraint language to form a constraint expression. Further, we hypothesize that to apply constraints appropriately, it is necessary to understand the context in which each constraint is applicable. We refer to this as "application conditions". We show that an explicit representation of application conditions, in a machine interpretable format, along with the constraints and the domain ontology can be used to support the verification and maintenance of constraints
Freezing orders; the difficulties introduced by the decision in Prest v Petrodel Resources Limited
No full textSimon Ducan, of Moon Beever Solicitors, looks at the way the judgment in Prest v Petrodel Resources Limited [2013] UKSC 34 has received much scrutiny and made reliance on standard form freezing order precedents problematic where the defendant controls various companies that hold the assets that the claimant seeks to freeze. The author suggests that it has served as a reminder that the court will respect and preserve the corporate veil except in very limited circumstances now narrowly defined in the “evasion” principle
Slovensko kulturno društvo Simon Gregorčič iz Toronta v Kanadi obhaja svojo tridesetletnico
No full textThe author presents the work of the Slovenian Cultural Association Simon Gregorčič in Toronto, Canada, since its establishment in 1959, the Association’s board, its rules, members, as well as their social and cultural activities.
The report was written in Slovene language.
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God bless you, my homelandGod be with you, my alpine blossomMay the Heavenly Guide lead youI will never forget you!These lines from Gregorčiči poetry are engraved in blackgranite on the pedestal of his statue. The statue was createdby sculptor Zdenko Kalin from Ljubljana and unveiled on June 22, 1975, a t the »Simon Gregorčič« farm on the outskirts of Toronto. It is probably the most beautiful monument everset up beyond our borders dedicated to a Slovene patriot. The Slovenes from the Primorska region in the Slovene Cultural Association are well aware of this. All their cultural events express love for their homelands on both sides of the ocean.Začetki kulturnega društva slovenskih izseljencev iz Primorske v Kanadi segajo v obdobje po drugi svetovni vojni. Mladi izseljenci iz tega dela Slovenije, ki so v tujini iskali predvsem boljše ekonomske pogoje, so ustanovili svoja kulturna društva, da bi ohranili kulturni značaj ter delovali zunaj verskih in političnih vplivov. Avtorica predstavi delovanje slovenskega kulturnega društva Simon Gregorčič v Torontu v Kanadi od njegove ustanovitve leta 1959, sestavo njegovega odbora, pravila, gibanja števila članov, njegovo družbeno in kulturno dejavnost: gledališke predstave, pevski zbor, filmske predstave. Poseben mejnik v življenju društva sta pomenila nakup in ureditev Slovenske kmetije leta 1964 ter pestra dejavnost na njej. Začeli so sicer s tradicionalnimi pikniki, ki so zasloveli po slovenski kuhinji, organizirali so tekmovanja v balinanju, nogometu, odbojki
Triaeris stenaspis Simon 1892
No full text<p> <b> <i>Triaeris stenaspis</i> Simon, 1892</b> (Figs 1–9)</p> <p> <i>Triaeris stenaspis</i> Simon, 1892: 561.</p> <p> <i>Triaeris patellaris</i> Bryant, 1940: 268, fig. 4.</p> <p> <i>Triaeris berlandi</i> Lawrence, 1952: 5, figs. 3a–f.</p> <p> <i>Triaeris lepus</i> Suman, 1965: 235, figs. 27–31.</p> <p> <i>Triaeris lacandona</i> Brignoli, 1974: 208, figs. 4A–F.</p> <p> <i>Oonops erinaceus</i> Benoit, 1977: 31, figs. 11a–d. syn. nov.</p> <p>For complete synonymy list, see World Spider Catalog (2023)</p> <p> <b>Type material examined.</b> Holotype ♀ <i>Oonops erinaceus</i> (BE _ RMCA _ ARA.Ara.133326), Flagstaff hill, Saint Helena, 2000–2200m, 7.V.1967, J. Decelle and N. Leleup coll.; paratype imm. ♀ <i>Oonops erinaceus</i> (BE _ RMCA _ ARA.Ara.133347), Prosperous Bay Plain, Saint Helena, 15°57’S, 05°39’W, 1000–1100ft, 5–6.V.1967, J. Decelle & N. Leleup coll.</p> <p> <b>Other material examined.</b> 1 ♀ (IBSP 61400), Brazil: Reservatório Guarapiranga, Jardim Ângela, Ilha dos Eucaliptos (23°45’9.5286”S - 46°44’23.3082”W), 07-13.X.2003, I. Cizauskas & C. R. M. Garcia coll.</p> <p> <b>Diagnosis.</b> See Platnick <i>et al</i>. (2012).</p> <p> <b>Description.</b> For a detailed description, see Platnick <i>et al</i>. (2012).</p> <p> <b>Remarks.</b> Simon (1892) described <i>Triaeris stenaspis</i> based on a female from Saint Vincent Island, and this now pantropical and introduced species has never had a male documented. Thus, it is likely this species is wholly parthenogenic (Brescovit <i>et al</i>., 2019). The long seta on the chelicera and the female genitalia (Figs 8–9) illustrated in the original description of <i>Oonops erinaceus</i> by Benoit (1977) are typical of <i>T. stenaspis</i> material from multiple continents examined by DS, ADB, AH and RJ (pers. obs.). Indeed, the epigyne of the holotype, with distinctive morphology of the receptacle, is almost indistinguishable from specimens from other regions (cf. Figs 6, 7) and differences in the habitus to fresh specimens are simply the result of long-term preservation in ethanol (Figs 1–5). Although the type specimen of <i>O. erinaceus</i> is almost completely bleached and appears at first to lack scuta, we can still faintly observe the border of the dorsal scutum (Figs 2, 4). Therefore, we propose, based on near-identical cheliceral setae and epigynal morphology, that <i>O. erinaceus</i> be considered a junior synonym of <i>T. stenaspis</i> syn. nov.</p>Published as part of <i>Sherwood, Danniella, Brescovit, Antonio D., Henrard, Arnaud, Jocqué, Rudy & Fowler, Liza, 2023, Oonops erinaceus Benoit, 1977, a junior synonym of Triaeris stenaspis Simon, 1892 (Araneae: Oonopidae), pp. 291-293 in Zootaxa 5297 (2)</i> on pages 291-293, DOI: 10.11646/zootaxa.5297.2.8, <a href="http://zenodo.org/record/7993268">http://zenodo.org/record/7993268</a>
Lynne V. Cheney: Saving Our Schools
No full textLynn V. Cheney (born August 14, 1941) is an American author, scholar, and former talk-show host. She is married to the 46th vice president of the United States, Dick Cheney, and served as the second lady of the United States from 2001 to 2009.
As chairman of the National Endowment for the Humanities from 1986 to 1993, she published American Memory, a report that warned about the failure of schools to transmit knowledge of the past to upcoming generations. A system of education that fails to nurture memory of the past denies its students a great deal, Mrs. Cheney wrote: the satisfactions of mature thought, an attachment to abiding concerns, a perspective on human existence. Currently, as a senior fellow at the American Enterprise Institute, she particularly emphasizes the value of knowing our nation\u27s history. One of the important lessons we can learn is that freedom isn\u27t inevitable, she says. This realization should make the liberty we enjoy all the more important to us, all the more worth defending.
Cheney is author or co-author of eight books, including Kings of the Hill (second edition, 1996, Simon & Schuster), a book about political figures, among them Henry Clay and Sam Rayburn, who played powerful roles in the House of Representatives. She wrote this book with her husband, who was a Congressman from Wyoming from 1979 to 1989. Mrs. Cheney\u27s 1995 book, Telling the Truth (Simon & Schuster), analyzed the effect of postmodernism on study in the humanities
Cyrba nigrimana Simon 1900
No full textCyrba nigrimana Simon, 1900 Figs 14–23 Cyrba nigrimana: Simon 1900: 389; Wanless 1984 b: 465, figs 12 A–G; Wesołowska & Haddad 2009: 27–28, figs 26–28. Description: Male (MRAC, 169807). Measurements: Carapace: length 2.05, width 1.45, height at PLE 1.10. Ocular area: length 0.90, width anteriorly 1.35, width posteriorly 1.25. Diameter of AME 0.42. Abdomen: length 2.45, width 1.25. Clypeal height: 0.15. Cheliceral length: 0.65. Length of leg segments: I 1.30 + 0.75 + 0.90 + 0.90 + 0.50; II 1.30 + 0.70 + 0.90 + 0.80 + 0.50; III; 1.00+ 0.50 + 0.85 + 0.90 + 0.45; IV 1.50 + 0.65 + 1.15 + 1.40 + 0.60. Leg spination: I Fm d 1 - 1-4; Pt pr and rt 1, Tb pr and rt 1 - 1 v 2 - 2 - 2 ap, Mt pr & rt 1 - 1 v 2 - 2 ap; II Fm d 1 - 1-4, Pt pr and rt 1, Tb pr and rt 1 - 1 v 2 - 2 - 2 ap, Mt pr and rt 1 - 1 v 2 - 2 ap; III Fm d 1 - 1-5, Pt pr and rt 1, Tb d 1 -0-0 pr and rt 1 - 1 v 1-2 - 2 ap, Mt d 1 -0-0 pr and rt 1 - 1-2 ap v 2 - 0-2 ap; IV Fm d 1 - 1-5 or 1 - 1 - 1-5, Pt pr and rt 1, Tb d 1 -0-0 pr and rt 1 - 1 v 1-2 - 2 ap, Mt d 1 -0-0 pr 1-2 - 2 ap rt 1 - 1-2 ap, v 1 - 0-2 ap. Colouration (Figs 14, 15): Carapace yellow-brown, with brown eye field and black around eyes, covered with white scales and brown hairs. Sternum yellow-brown. Clypeus and cheeks yellow, densely covered with white hairs. Chelicerae brown-yellow. Abdomen: dorsum brown, but medially yellow; sides and venter grey-brown. Booklungs yellow. Spinnerets brown. All legs yellow, but tibiae, metatarsi and tarsi brown. Palpus yellow, with brown cymbium. Palpal structure as in Figs 17–20. Female. For description see Wanless (1984 b; Figs 16, 21– 23). Material examined: SOUTHAFRICA: Limpopo: 1 ♀ (NCA, 2009 / 2172), Little Leigh, 22 ° 93 'S: 29 ° 85 'E, pitfall (10 days), Pterocarpus rotundifolius, collector and date unknown; 1 ♀ (NCA, 2009 / 2171), same locality, 22 ° 93 'S: 29 ° 88 'E, bk, Pterocarpus rotundifolius, 38798, [no date], V. Gelebe. Eastern Cape: 1 ♀ (MRAC, 169636), Ecca Pass Nature Reserve, ca 13 km N of Grahamstown, direction Fort Beaufort, 33 ° 18 'S: 26 ° 32 'E, 16.i. 1989, R. Jocqué; 1 ♀ (MRAC, 169721), same locality, under stones, 16.i. 1989, R. Jocqué; 2 ♂ (MRAC, 169807), ca 30 km E of Port Elisabeth, sieved litter of dune scrub, 17.i. 1989, R. Jocqué. Comments: Until now, this species has been reported as being known from the female only and from a few localities in South Africa (Wanless 1984 b; Wesołowska & Haddad 2009). Caporiacco (1947) reported a single male of C. nigrimana collected from East Africa (Pangani), but provided no illustration or description of this male. It remains unclear how the latter author could match the single male he studied with C. nigrimana described from a single female by Simon (1900). The problem of what species was reported by Caporiacco under the name C. nigrimana requires further attention. The male of C. nigrimana (Figs 17–20) is most similar (almost identical) to that of Cyrba boveyi, described by Lessert (1933) from a single male and redescribed on the basis of both sexes by Wanless (1984 b, figs 10 A – L). The latter author only provisionally matched the male of C. boveyi with the female from Kenya, which was selected because of its ‘most unusual epigyne’ (Wanless 1984 b: 465). The males of both species seem to differ in the slightly different shape of the tibial apophysis and of the sclerotied lobe M 2 (sensu Wanless 1984 a). Furthermore, the male of C. boveyi has its body covered with bright orange hairs (see Wesołowska & Haddad 2009, fig. 238), as in C. simoni, whereas the male of C. nigrimana is otherwise (Figs 14, 15). We have matched the male and females of C. nigrimana on the basis of their virtually identical body colouration (Figs 14–16). However, this matching must be considered provisional until a sample containing both sexes has been collected.Published as part of Azarkina, Galina N. & Logunov, Dmitri V., 2010, New data on the jumping spiders of the subfamily Spartaeinae (Araneae: Salticidae) from Africa, pp. 163-182 in African Invertebrates 51 (1) on pages 167-169, DOI: 10.5733/afin.051.010
Comparison of Straight and Curved-Ray Surface Wave Tomography at Near-Surface Scale: a 3D Numerical Example
No full textSurface Wave Tomography (SWT) is used to build shear-wave velocity models. In some studies, it is assumed that surface waves propagation follows a straight line between the source and the receiver. This assumption might be violated in near-surface studies because of high level of complexity and lateral heterogeneity. In curved-ray SWT, the actual ray paths between every receiver couple are computed. Curved-ray SWT can increase the accuracy of the model and will increase the computational effort. It is important to investigate the gained model improvement together with the associated additional computational cost from curved-ray over straight-ray SWT for near-surface applications. We apply straight- and curved-ray SWT on a generated 3D synthetic dataset and compare the results in terms of accuracy and computational costs.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Applied Geophysics and Petrophysic
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