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Abstract  

A triangulation of a manifold (or pseudomanifold) is called a tight triangulation if any simplexwise linear embedding into any Euclidean space is tight. Tightness of an embedding means that the inclusion of any sublevel selected by a linear functional is injective in homology and, therefore, topologically essential. Tightness is a generalization of convexity, and the tightness of a triangulation is a fairly restrictive property. We give a review on all known examples of tight triangulations and formulate a (computer-aided) enumeration theorem for the case of at most 15 vertices and the presence of a vertex-transitive automorphism group. Altogether, six new examples of tight triangulations are presented, a vertex-transitive triangulation of the simply connected homogeneous 5-manifold SU(3)/SO(3) with vertex-transitive action, two non-symmetric 12-vertex triangulations of S 3 × S 2, and two non-symmetric triangulations of S 3 × S 3 on 13 vertices.

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Interventional Medicine and Applied Science
Authors: Peter Lukovich, A. Zsirka-Klein, T. Vanca, L. Szpaszkij, and P. Benkő

Abstract

The technical background of pure Natural Orifice Translumenal Endoscopic Surgery (NOTES) surgery has not been created yet, but ever more reports are being published on hybrid NOTES surgery and single-port surgical interventions, which have appeared as a result of device development inspired by NOTES. Surgery carried out through single ports only differ from pure NOTES in respect of the access orifice, which makes learning this technique extremely important for anyone whishing to implement a surgical intervention through a natural orifice. Numerous publications have appeared by now on the single port or hybrid NOTES surgery of various organs (gall bladder, kidney, large bowel). Based on these, most surgery is safely feasible through one port as well, but the surgery takes longer and it is not significantly less painful than a “traditional” laparoscopic intervention. Long-term results are still missing, primarily in what concerns the frequency of infections and post-operative hernia. We have received an answer to part of the dilemmas formulated in the White Paper. Besides specially bent laparoscopic devices robot technology and devices controlled by extracorporal magnets may both be a solution to the problem of triangulation. The transvaginal and transgastric paths do not seem to cause significant risks from the viewpoint of infections, but the closing of viscerotomy in the case of the stomach is far from being solved. In respect of learning and practicing new surgical techniques no method exists at the moment that could be considered the “gold standard”. Besides the earlier questions there are new ones as well awaiting partial solutions (e.g. necessity of drain following a NOTES surgery, oncologic principles).

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While the cadastral and topographic maps tie to the classical reference systems and frames, there will be need to know the relation between the classical and GPS-based networks in a particular country. In this study we discuss the scale factor and azimuth discrepancies between the Hungarian first order triangulation and the national GPS network emphasising their practical significance.The comparison of traditional and GPS derived slope and geodesic distances as well as the comparison of the different azimuths make possible the estimation of the scale and orientation differences of the two systems without the knowledge of height and geoid information which may contain additional errors, too.The estimated −4.34 mm/km mean value reflects the significant scale difference, which is similar to the values derived in neighbour countries. The −2.51 arcsec mean azimuth difference reflects the orientation of the two system.

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Although journalistic translation research has been quite successful over the past 15 years, from a methodological point of view many scholars struggle with the total or partial absence of a traceable source text. As a consequence, parallel corpora are rare and the researcher often has to rely on multilingual sets of texts that are comparable. This contribution deals in detail with that essential methodological problem. It relates the multisource and multi-author situation of translation in journalism to this non- (or only partially) identifiable character of the source text–target text relationship. We argue that the triangulation of comparative text analysis with fieldwork adds value to this type of research. This argument is illustrated with a study triangulating textual analysis in three languages with interviews and non-participant observation. Such a triangulation also responds to earlier calls for a more elaborated contextualization of the production process and the sociohistorical circumstances in journalistic translation research.

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This background paper recalls the main findings gained so far in news translation research. It also presents issues and questions which still deserve scholarly attention. The contributions to this special issue are contextualized in relation to research into news translation, or journalistic translation more widely. One of the major issues concerns the choice of methodological approaches to tackle the phenomenon of news translation. The contributions illustrate scope and limitations of various methodologies, which are mainly product-oriented and advocate for triangulation with participant-centred methods.

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Military considerations in the early 1770s declared the need for a systematic mapping of the eastern regions of Norway along the border to Sweden. After a failed attempt of direct map sketching in the field, the geographical circle was introduced in 1779 to establish a triangular network as a backbone for further positioning of natural and man-made features. The resulting maps were used in preparation of fortresses and planning of defensive field operations. The scale of the triangular network was established by an astronomical baseline supported by linear baselines measured on frozen lakes during winter time. Many stations had latitude determinations from circum-meridian observations of the sun and stars to control the precision of the geodetic triangulation. When discrepancies became too large, a new baseline and a new reference point was selected. The original reference point was the flagpole of the fortress at Kongsvinger, which served as the zero-meridian for mapping in Norway until 1850. Other reference sites, for which accurate latitude and longitude were determined from several years of astronomical observations, were established in Trondheim, Bergen, and Kristiansand as the original triangular arc was expanded around the entire coast of southern Norway to close at Kongsvinger after 3 decades of observations. This allowed astronomical control of the geodetic results.

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This is a brief history of how a small group of people carried out its mandate to survey and map Canada in spite of the hostile environment — the second largest country in the world — in a 100 years.The levelling started from Halifax and by 1916 it reached Vancouver completing the coast-to-coast connection, encompassing about 22 000 km distance of which 94% was done on the railway tracks. The adjustment was carried out in 9 steps, it included the tide gauges in both the east and west coast, and was completed in 1928. The final adjustment used about 37 000 km length, from which 30 000 was measured by the GS. The first order re-levelling started after the Second World War and was carried out on the Trans-Canada highway. By 1994 Canada was covered by a levelling network of about 109 747 km. After this date there was no more conventional levelling.The triangulation used cross-braced quadrilaterals, based on the method used in the USA. In 1961 the GS started to use the conventional methods of chains of triangles. The measurements covered mostly the very southern part of Canada. The mapping of middle and northern part of the country had to await until the electronic era, which was practically made for Canada.The lower order accuracy was provided by Shoran, using about the average of 400 km line length for triangulation. Between 1947 and 1957 this method provided 501 measured triangle sides of about 200 000 km in total length and provided 119 base-point covering about 65% of Canada.The other method, the Aerodist — the Tellurometer version of Shoran — provided second order accuracy. The triangulation, using cross-braced quadrilaterals, with 100 km sides gave 219 points and covered about 25% of the land area of Canada. The measurements were done between 1965 and 1973.Recent measurements make use of GPS for geodetic position determination. A 10 year program started in 1987. In 1992 the GSD defined an official geoid to be used in connection with all satellite work.

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Elméleti háttér: A „személyes autoritás a családi rendszerben” fogalmát Williamson (1981, 1982) dolgozta ki. Olyan sajátos fejlődési feladatot és szakaszt ír le, mely egyszerre érvényes egyéni és családi szinten, és lényege a fiatal felnőtt személy és szülei közötti családi hierarchia újraértelmezése és átrendezése. A fejlődési szakasz optimális esetben a korábbi, jelentős mértékben tekintélyre alapozott kapcsolattól egy differenciált, mégis bensőséges kapcsolati mód, az individuáció és az intimitás közötti egyensúly elérését jelenti. Cél: Tanulmányunkban a Bray és munkatársai (1984) által kidolgozott Személyes Autoritás a Családi Rendszerben Kérdőív (Personal Authority in the Family System Questionnaire, PAFSQ) magyar adaptációjának folyamatát írjuk le és a kérdőív pszichometriai jellemzőit is bemutatjuk. A PAFSQ intergenerációs családi folyamatokkal kapcsolatos, 132 tételből álló kérdőív, mely három generáción keresztül méri a családi kapcsolatokat, a vizsgálati személy szemszögéből. Módszerek: Kérdőíves vizsgálatunkban 338 felnőtt, tartós párkapcsolatban élő személy vett részt (123 férfi és 215 nő, átlagéletkor: 41,09 ± 10,95 év). Ellenőrző faktoranalízissel megvizsgáltuk, hogy magyar mintán is megfigyelhető-e a Bray és munkatársai (1984) által meghatározott faktorstruktúra. Emellett feltáró faktoranalízist is végeztünk, hogy megvizsgáljuk, van-e olyan faktorszerkezet, amely a magyar mintára jobban illeszkedik az eredetinél. Eredmények: Az általunk azonosított faktorstruktúra nagymértékben egyezik a Bray és munkatársai (1984) által közölttel. Hat faktor azonos volt, míg a két eltérő (Trianguláció, Személyes felelősség a fontos kapcsolatokban) kulturális különbségeket tükrözhet. Az így kapott faktorok Cronbach-alfa mutatói elfogadhatónak bizonyultak (0,70—0,90). A kérdőív nyolc itemének segítségével négy elégedettségi mutatót képeztünk, amelyek a párkapcsolatra, a gyermekkel, az anyával és az apával való kapcsolatra kérdeznek rá. Fenti mutatók és a magyar mintán kapott faktorok között összefüggést mutattunk ki. Utóbbiak segítségével három, az individuáció és az intimitás különböző fokozatait mutató profiltípust azonosítottunk. Következtetések: A Személyes Autoritás a Családi Rendszerben Kérdőív magyar változata (PAFSQ-H) pszichometriai jellemzői megfelelőek. A kérdőív alkalmazható a kutatásokban, de struktúrája véglegesítéséhez további vizsgálatok szükségesek.

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The paper presents some methods of transforming ETRS89 co-ordinates to official Slovenian datum (D48)  co-ordinates. Together with traditional transformation methods of scaling, translation and rotation least squares collocation is also used. The results of different transformation procedures between the astrogeodetic network and global co-ordinate system (ETRS89) show a lot of the drawbacks of existing national co-ordinate frame.

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