177,323 research outputs found
FIGURE 6 in First record of the subfamily Brachycyrtinae (Hymenoptera, Ichneumonidae) from continental Africa, with description of three new species
No full textFIGURE 6. Brachycyrtus lucchii Di Giovanni & Varga, sp. n., A, C, D and F: female, holotype; B and E: male, paratype. A: mesopleuron and metapleuron, lateral view. B: male aedeagus and paramere, ventrolateral view. C: propodeum, dorsolateral view. D: metasoma, dorsolateral view. E: wings, lateral view. F: ovipositor, lateral view.Published as part of Giovanni, Filippo Di & Varga, Oleksandr, 2021, First record of the subfamily Brachycyrtinae (Hymenoptera, Ichneumonidae) from continental Africa, with description of three new species, pp. 203-218 in Zootaxa 4985 (2) on page 215, DOI: 10.11646/zootaxa.4985.2.4, http://zenodo.org/record/494336
Xenophysa poecilogramma Varga 1985
No full textXenophysa poecilogramma Varga, 1985 Xenophysa poecilogramma Varga, 1985, Zeitschrift der Arbeitsgemeinschaft Österreichischer Entomologen 37 (1–2): 26. Type material. Holotype: female, Afghanistan, S. of Khinjan, Salang-pass, N-slope, 2100 m, 9.VII. 1969, leg. Vartian (coll. Vartian, NHMW). Slide 9820 Ronkay Paratypes: 6 Ƥ from the same locality and data (5 Ƥ in coll. Vartian, NHMW, 1 Ƥ in coll. Varga); 2 Ƥ, Afghanistan, Paghman Mts., 30 km NW of Kabul, 2500 m, 19.– 31. V. 1965, leg. Kasy & Vartian; 1 Ƥ from the same locality, 27. VII. 1965, leg. Kasy & Vartian; 3 Ƥ from the same locality, 26. VIII. 1965, leg. Vartian; 2 Ƥ, Afghanistan centr., Band-i-Amir, 3000 m, 31.VII.- 1. VIII. 1965, leg. Kasy & Vartian (coll. Vartian, NHMW); 1 Ƥ, Afghanistan, Hindukush Mts, Anjuman-valley, 2800–4250 m, 18.– 23. VII. 1969, leg. D. Müting (coll. HNHM). Other material. 11 Ƥ, Afghanistan, N-Salang, 2600 m, 6 –9. 07. 1976, leg. Reshöft (coll. G. Ronkay and coll. Varga); 3 Ƥ, Afghanistan, Salang N, 2700 m, 3–6.VII. 1975, Thomas leg.; 5 Ƥ Afghanistan, Badakhshan, Anjuman Pass, 3000 m, 10.07.1963, Omoto leg.; 3 Ƥ, Afghanistan, Badakhshan, Val Panjshir sup. 7 –8.07.1963, Omoto leg.; 1 Ƥ, Tadjikistan, W Pamirs, Chorog, Botanical garden, 22.07.1972, Weidenhoffer leg. (all in ZSM). 1 Ƥ, NE- Afghanistan, Badakhshan, Wakhan-valley, Kotal-e-Zardeu, 3000 m, 29. VI. 1971, leg. Ebert & Naumann (coll. LMK); 1 Ƥ, NE-Afghanistan, Prov.Badakhshan, reg. Darwaz, vic. Kwahan, 3200 m, 12–13. VII. 1972 (coll.Nr. 329, coll.C. Naumann, Bonn, now in LMK); 1 Ƥ from the same region but from Pari Kham, 2700 m, 28. VII. 1972 (coll. Nr. 351, coll. C. Naumann, Bonn, now in LMK). 3 Ƥ, Tadjikistan, E. Pamirs, Iskashimsky Mts, leg. Lukhtanov (coll. Gyulai); 9 3, 17 Ƥ, Pakistan N, Hindukush Mts, Shandur pass, 3300–3700 m, 26 – 27.06.2000, leg. G. Ronkay & Z. Varga (coll. Gyulai, G. Ronkay and Z. Varga). Genital slides: Ƥ Ronkay 9820 (Holotype); 3 Varga 7765, 7939, 7951, Ronkay 9797, 9798, 9799, 9804; Ƥ Varga 1294, 4734, 4812, 7419, 7923, 7924, 7928, 7945, 7946, 7747, 7765, 7963, Ƥ: Ronkay 900, 1494, 9796. Redescription. Xenophysa poecilogramma is the largest species of the genus (length of forewing 14–18 mm, expanse 30–39 mm) with rather contrasting colouration. Body and forewings light brownish grey, irrorated. Collar and tegulae rounded with light, ivory-coloured scales. Forewings extremely elongate, acute apically. Maculation whitish with dark grey intermaculation, reniform macula filled with grey. Orbicular spot narrow quadrangular, whitish, nearly without darker scales. with well-marked dark brownish-grey arrowheads on the inner margin of the subterminal line. Hind wings light fuscous grey. Sexes are similar (Plate 4, Figs. 21–22). Xenophysa poecilogramma shows the most external similarity with X. pseudopoecila sp. n. described below. The most important differential external characters of X. poecilogramma are: the extremely narrow, oblique quadrangular orbicular spot, and the nearly unicolorous, only basally lighter hind wing (X. pseudopoecila has a more rounded orbicular spot with greyish filling and lighter submarginal stripe on the hind wings, see below). Male genitalia: characterised by the thick uncus with a rather short, rounded bilateral hook, with very short bilateral extensions at base of uncus and with small, rounded lobes of tegumen. Juxta broad, rhombic with a sclerotised dorsal extension. Valva with dentate dorsal extension, short digitus and spiny pseudopollex. Aedeagus slender, very long, with moderately bulbous ampulla; vesica with huge subbasal diverticulum (Plate 8, Figs. 41 a, b; 42 a, b). Female genitalia: generally heavily sclerotised with deep and narrow V-shaped incision of antrum, bilateral arms of antrum firmly attached with a heavily sclerotised “knob” to the sclerotised ring of the 9 th abdominal segment; ductus bursae relatively long and heavily sclerotised with a transversal suture, bursa small, elliptic, without signa. Papillae anales weakly sclerotised, triangular with fine, relatively short setae (Plate 13, Figs 58–59).Published as part of Varga, Zoltán, 2011, Revision of the genus Xenophysa Boursin, 1969 (Lepidoptera, Noctuidae), pp. 1-29 in Zootaxa 3094 on page 8, DOI: 10.5281/zenodo.27908
Xenophysa cacumena subsp. afghanorea Varga 1985, stat. rev.
No full textXenophysa cacumena afghanorea Varga, 1985, stat. rev. Xenophysa cacumena afghanorea Varga, 1985, Zeitschrift der Arbeitsgemeinschaft Österreichischer Entomologen 37 (1–2): 33. Type material. Holotype: male, “ Afghanistan, Dasht-i-Nawar, NW v.Ghazni, 3000 m, 8.– 10. VI. 1965, leg. Kasy & Vartian (coll.Vartian)” (NHMW). Paratypes: 23 3 and 2 Ƥ from the same locality and data (21 3, 2 Ƥ in coll. Vartian, NHMW, 2 3 in coll.Varga); 3 3, Afgh. c., Band-i-Amir, 3000 m, 29.– 30.VII. 1963, leg.Kasy & Vartian (coll.Vartian, NHMW); 1 Ƥ, Afghanistan, Khurd-Kabul, 1900 m, 19.VII. 1969, leg.Vartian (coll.Vartian, NHMW). Genital slides: 3: Boursin Va 127, 134, Varga 1427, 2432, 2433, 2434. Taxonomic notes. This subspecies is slightly larger (expanse: 30–35 mm, length of forewings: 14.5–15.5 mm) and more contrastingly marked in average than X. cacumena cacumena (Figs 11–12). Male genitalia slightly larger with somewhat more elongate bilateral extensions of tegumen and more acute costal extensions of valva, but without any significant differences.Published as part of Varga, Zoltán, 2011, Revision of the genus Xenophysa Boursin, 1969 (Lepidoptera, Noctuidae), pp. 1-29 in Zootaxa 3094 on pages 5-6, DOI: 10.5281/zenodo.27908
New computational paradigms in solving fault detection and isolation problems
No full textSeveral fault detection and isolation problems are formulated for linear time-invariant systems with additive faults and general existence conditions of their solutions are given. An overview of recently developed computational methods for the synthesis of fault detection filters is presented for all formulated problems. Two remarkable computational paradigms emerged in these developments, which are instrumental in developing generally applicable,
numerically reliable and computationally efficient synthesis
methods. The first paradigm is the use of integrated
synthesis algorithms, where the resulting fault detection filters
are determined by successive updating of partial syntheses
addressing specific requirements. The second
paradigm is the use of the nullspace method as a first synthesis
step to reduce all synthesis problems to a simple standard form which allows to easily check solvability conditions and address least
order synthesis problems
Xenophysa pseudopoecila Varga, sp. n.
No full textXenophysa pseudopoecila Varga sp. n. Type material. Holotype: male, [Kirghizistan], Karagai-tau, [ex coll. Staudinger–Bang-Haas] (coll. Varga). Paratypes: 8 3, Kirghizistan, Naryn range, Ala Myshik, 2100 m, 4 –7. 07. 1994, leg Toropov & Sinjaev (coll. Gyulai); 1 3, Kirghizistan, Susamyr Mts. Komeren river, 2000 m, 9 –13. 06. 1994, leg. Toropov & Sinjaev (coll. Gyulai); 1 3, 3 Ƥ, Kirghizistan, Naryn range, 2000 m, 1-5 - 07. 1993, leg. Toropov (coll. Gyulai); 1 3, Kirghizistan, Naryn range, Kizil Bel, 2200 m, 10 –13. 07. 1993, leg. Toropov (coll. Gyulai); 1 Ƥ, Kirghizistan, Naryn range, Maly Naryn, Oruktau, 2700 m, 23. 06. 1996, leg. Toropov (coll. Gyulai); 2 3, 4 Ƥ, Kirghizistan, Naryn range, 15 km W of Naryn, 2300 m, 23. 06. 1995, leg. Lukhtanov (coll. Gyulai); 7 3, 6 Ƥ, Kirghizistan, Alai Mts, Tengisbai pass, 10 km N of Daraut Kurgan, 3000–3800 m, 11– 25. 07.1995, leg. V. & A. Lukhtanov (coll. Gyulai, G. Ronkay, Z. Varga); 12 3, 4 Ƥ, Kirghizistan, Transalai Mts., Aram-Kungei, 2800 and 3100 m, 12 –15. 07. 1993. leg. V. & A. Lukhtanov (coll. Gyulai, G. Ronkay); 1 3, Kazakhstan, Taldy Kurgan region, Ili river, Borokhudsin, 450 m, 7 –12. 06. 1993, leg. V. & A. Lukhtanov (coll. Gyulai); 8 3, 7 Ƥ, Tadjikistan, Gorno-Badakhshan, Rushan, 3400 m, 21 – 30. 07. 1997; 21 –31. 07. 1998 and 1 –10. 08. 1998. leg. Gurko (coll. Gyulai, G. Ronkay); 2 3, 11 Ƥ, Tadjikistan, Chorog, Botanical garden, 2300 m, 23. VII. 1959 and 02. 08. 1989, leg. Tsvetaev (coll. Tsvetaev, ZMUM, coll. Varga); 1 3, 1 Ƥ, Tadjikistan, Chorog, 2300 and 4200 m, 2. 06. 1965 and 31. 05. 1965, leg. Stshetkin (coll. Gyulai); 3 Ƥ, Tadjikistan, Turkestan Mts, Shakhristan Mts, Khushikat, 2000 m, 5 –8. 06. 1994 and 45 km E Obburdon pass, 2800–3000 m, 13 –15. 07. 1994, leg. V. & A. Lukhtanov (coll. Gyulai); 2 Ƥ, Tadjikistan, E. Pamir, Sarykol Mts, Dunkeldyk, 4100–4300 m, 21 –25. 07. 1996, leg. V. & A. Lukhtanov (coll. Gyulai); 1 3, 1 Ƥ, Tadjikistan, E. Pamir, Vakhanski Mts 4200 m, 24. 07. 1996, leg. V. & A. Lukhtanov (coll. Gyulai); 2 3, Tadjikistan, E. Pamir, Pshart Mts 4200 m, 20 –21. 07. 1996, leg. V. & A. Lukhtanov (coll. Gyulai); 4 Ƥ, Afghanistan, N Salang, 2500 m, 5 – 6.07.1976, leg Reshöft (coll. G. Ronkay, Varga); 3 Ƥ, 6 Ƥ, Afghanistan, Salang pass, 3000 m, 15. 06. 1971, leg. Reshöft (coll. G. Ronkay, Varga); 3 3 13 Ƥ Pakistan N, Hindukush Mts, E of Shandur pass, 3750 m, 72 o 38 ’ E, 36 o 07’ N, 24 –26. 06. 2000, leg. G. Ronkay & Z. Varga (coll. Gyulai, G. Ronkay and Varga). Genital slides: 3 Va rga 5129, Holotype; 3 Varga 2686 (figured as X. junctimacula in Varga 1985), 3349, 7415, 7518, 7790, 9807, 7917, 7950, 8061, 8062; Gyulai 781, 957, 2322; Ronkay 9807; Ƥ Varga 6064, 7798, 7927, 7929 Description. Xenophysa pseudopoecila belongs to the larger species of the genus. Length of forewing 14–17 mm, expanse 30–36 mm, sexes similar. Head dark brownish grey, frons and apex of palpi with whitish-grey hairs. Antennae long, extending the 4 / 5 of length of forewings, bipectinate and ciliate (male), filiform and ciliate (female). Collar and tegulae dark brownish grey with whitish grey margin, abdomen dark grey, with ochreous and whitish grey hairs. Forewings elongate triangular, acute apically; ground colour brownish grey without reddish or chestnut brown hue, irrorated with whitish-grey scales, mostly at costa. Maculation whitish grey with darker grey filling, orbicular spot elliptic, often slightly curved; reniform bilobate; orbicular and reniform spots interconnected. Claviform spot short, elliptic. Transverse lines faint, submarginal stripe whitish, with dark blackish-grey arrowheads on the inner side. Inner part of cilia nearly whitish, with broad dark medial stripe. Hindwings basally lighter, marginally darker grey but with a lighter “wash” subterminally. Forewing apically more acute and also the colouration of X. pseudopoecila is much more greyish, contrasting and irrorated than of the other two species of this species group. Thus, it resembles much more to the not closely related X. poecilogramma, but it can be clearly distinguished by the darker grey filling and more elliptic form of the orbicular spot, by the less oblique and quadrangular reniform spot and by the light grey “wash” at the subterminal field of the hind wings. Male antenna also somewhat shorter and more bipectinate than in X. poecilogramma (Plate 5, Figs. 23–24). Male genitalia: Uncus strong, anchor-shaped with acute bilateral hooks apically, and with cross-like, rounded (not quadrangular) extensions basally. Juxta pentagonal, apically more sclerotised than in closely related species. Valva more elongate with large triangular, with a single, acute costal extension and with elongate elliptic digitus. Aedeagus with a strong ventral knot. Vesica without subbasal bladder but with a very large, extended and recurved diverticulum (Plate 10, Figs. 43 a, b; 44 a, b; 45 a, b). Female genitalia: Papillae anales triangular with fine and long hairs. Antrum with broad and not very deep U-shaped incision and with moderately sclerotised bilateral arms (less sclerotised than in both closely related species). Ductus bursae short and broad, corpus bursae globular, without signa. Appendix bursae recurved, broad (Plate 14, Figs 60–61). Taxonomic notes. X. pseudopoecila shows typical differences compared to the closely related species also in both sexes. Males can be mostly differentiated by the acute costal extension and females by the very broad Ushaped incision of antrum. The new species was already figured by Kozhantshikov (1937: 225, Fig. 81, male genitalia, Naryn) and Boursin (Entomops 15: 222, male genitalia, Samarkand) and also by Varga (1985: 30, Fig. 4 c and Plate 1, Fig. 1) as X. junctimacula Christoph. Biological notes. This species has a relatively large range of distribution from Uzbekistan (“Samarkand”, probably the mountains near the town) through Kirghisia (parts of W Tien-Shan, Alai Mts) and Tadjikistan (Pamirs) to NE Afghanistan and Pakistan (Hindukush Mts.). It often co-occurs with X. agnostica (e.g., Alai Mts, Pamirs), with X. naumanni and X. poecilogramma (E. part of Hindukush).Published as part of Varga, Zoltán, 2011, Revision of the genus Xenophysa Boursin, 1969 (Lepidoptera, Noctuidae), pp. 1-29 in Zootaxa 3094 on pages 27-28, DOI: 10.5281/zenodo.27908
An existence result for a class of quasilinear elliptic eigenvalue problems in unbounded domains
No full textWe consider a nonlinear eigenvalue problem under Robin boundary conditions in a domain with (possibly noncompact) smooth boundary. The problem involves a weighted p-Laplacian operator and subcritical nonlinearities satisfying Ambrosetti-Rabinowitz type conditions. Using Morse theory and a cohomological local splitting as in Degiovanni, Lancelotti and Perera in 2010, we prove the existence of a nontrivial weak solution for all (real) values of the eigenvalue parameter. Our result is new even in the semilinear case p=2 and complements some recent results obtained in a recent paper of Autuori, Pucci and Varga in 2013
Ctenoceratoda mallopyga Varga & Gyulai & Ronkay & Ronkay 2018, sp. n.
No full textCtenoceratoda mallopyga sp. n. (Figs 17–20, 31, 49, 50, 60) Holotype: male, Pakistan, Karakoram Mts, Naltar valley, 2800 m, 36°09’N, 74°12’E, 30.VI.2000, leg. Z. Varga et G. Ronkay (coll. Z. Varga, Debrecen). Paratypes. Pakistan. 8 males, 3 females, with the same data as the holotype; 1 female, from the same locality, 7.VII.2000, leg. Z. Varga & G. Ronkay; 1 female, from the same locality, 14.VIII.1998, leg. Z. Varga & G. Ronkay; 1 male, from the same locality, 15. VI.1998, leg. Gy. Fábián & B. Herczig; 1 female, from the same locality, 14.VIII.1998, leg. Z. Varga & G. Ronkay; 5 males, 4 females, from the same locality, 18.VII.1998, leg. G. Csorba & L. Ronkay; 2 males, Karakoram Mts, Naltar valley, 2000 m, N36°09’, E74°10’, 16.VII.1994, leg. B. Herczig, Gy.M. László & G. Ronkay; 21 males, 27 females, Karakoram Mts, Hispar valley, Huru, N36°15’, E74°42’, 23.VII.1994, leg. B. Herczig, Gy.M. László & G. Ronkay; 1 female, Darkot, 10.VIII.1998, leg. Z. Varga & G. Ronkay; 1 male, 1 female, Teru, 14.VII.1994, leg. B. Herczig, Gy.M. László & G. Ronkay (coll. P. Gyulai, G. Ronkay, Z. Varga and HNHM); 4 females, Karakoram Mts, Juglot valley, 2550 m, 26.VII.2011; 20 males, Karakoram Mts, Chaprot village, 2400 m, 29.VI.2014 (coll. P. Gyulai). Slide Nos: VZ 7435m, VZ 7494m, VZ 9173m, VZ 9238m, VZ 9245m, VZ 9823m (males), VZ7487f (female). Diagnosis – Ctenoceratoda mallopyga is on average the largest and the most colourful member of the C. lupa -group (wingspan 43–51 mm) having broad forewing and robust body. Ground colour of body and forewings variably dark whitish-grey, the lighter parts have some bluish shade while the darker parts of the thorax and the forewing are covered with darker graphite-grey scales. The forewing pattern is rather similar throughout the members of the lupa -group but the colouration is not brownish or ochreous as in the closely related C. contempta (Fig. 20), C. lupa (Fig. 21) and C. septemlacustris (Fig. 22) but more bluish or (in worn specimens) slate-grey. The basal part of reniform stigma is more prominently marked with blackish scales than in the related taxa while the claviform stigma is longer and stronger defined with blackish. The crosslines are reduced; the postmedial line is distinctly marked with black arrowheads. Hindwings light grey with darker terminal band. The male genitalia (Figs 49, 50) are basically similar to those of the related species, but the “head” of the cucullus is relatively larger than in C. contempta, C. septemlacustris and C. lupa (Figs 51–56) and the ampulla is longer and not acute as in the three allied taxa but slightly curved and obtuse terminally. Distribution and bionomics. The new species occurs in the southern Pamirs (Wakhan valley), the eastern Hindukush (east of the Shandur pass), the Karakoram Mts (type locality) and the western Himalayas. It inhabits the medium-high and higher altitudes (between 2000–2800 m), the moths are local but rather frequent in their habitats.Published as part of Varga, Zoltán, Gyulai, Péter, Ronkay, Gábor & Ronkay, László, 2018, Review Of The Species Groups Of The Genus Ctenoceratoda Varga, 1992 With Description Of Four New Species And A New Subspecies (Lepidoptera, Noctuidae), pp. 51-74 in Acta Zoologica Academiae Scientiarum Hungaricae 64 (1) on pages 64-69, DOI: 10.17109/AZH.64.1.51.2018, http://zenodo.org/record/573463
An overview of recent developments in computational methods for periodic systems
No full textAbstract: At the First IFAC Workshop on Periodic Systems (Como, Italy, 2001), a state of the art survey of computational methods for periodic systems has been presented (Varga and Van Dooren, 2001). This contribution continues this survey by presenting the main achievements in this field since 2001. Besides many foreseen developments mentioned in 2001 as open problems, important new developments took place as general algorithms for analysis of periodic descriptor systems, solution of periodic Riccati equations, or computational methods for continuostime periodic systems
General computational approach for optimal fault detection
No full textWe propose a new computational approach to solve the optimal fault detection
problem in the most general setting. The proposed procedure is free of any technical assumptions
and is applicable to both proper and non-proper systems. This procedure forms the basis of
an integrated numerically reliable state-space algorithm, which relies on powerful descriptor
systems techniques to solve the underlying computational subproblems. The new algorithm has
been implemented into a Fault Detection Toolbox for Matlab
C. Varga, The Place of Law in Lukacs' World Concept
No full textC. Varga, The Place of Law in Lukacs' World Concept. In: Revue internationale de droit comparé. Vol. 38 N°3, Juillet-septembre 1986. pp. 996-997
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