7,434 research outputs found
Agglomeration and interregional network effects on European R&D productivity
No full textThis paper explores the effects of intra-regional agglomeration and interregional networking on the productivity of R&D across EU regions. The paper is based on the spatial econometric modelling framework presented in Varga (2000), and further develops a methodology for estimating the dynamic effects of agglomeration and interregional networks on R&D productivity in regional knowledge creation (measured by patent applications and publications) at the level of EU regions. This empirical modelling framework is applied to classify EU regions into different tiers according to the strengths of their agglomeration effects. These effects are then compared to the network effects of interregional connectedness as reflected in regional participation in the EU Framework Programme for Research. The estimated model is used then for an assessment of the impacts of EU Framework Programme expenditures on technological development and for carrying out policy impact simulations.Agglomeration, network effects, R&D productivity
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
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
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
Motivation for nursing study among the students of University of Primorska College of health care Izola
No full textAcademic Knowledge Transfers and the Structure of International Research Networks
No full textAz egyetemektõl az ipari innovációig áramló tudástranszfer földrajza napjaink közgazdasági szakirodalmának széles körben kutatott témájává vált. A vizsgálatok egyik meghatározó eredményeként említhetõ, hogy az egyetemek és az ipar közötti lokális tudás-áramlások hatékonyságát számos külsõ tényezõ – mint pl. az agglomeráció, a vállalkozói környezet vagy a helyi üzleti kultúra – is befolyásolja. Az egyetemek nemzetközi kutatói hálózatokba való beágyazottsága és az egyetemekrõl származó tudás szétterjedése közötti kapcsolat vizsgálata viszont igen friss fejlemény a közgazdasági szakirodalomban. A téma fontosságát egyrészt az indokolja, hogy a kutatói produktivitás és a tudományos hálózatokhoz való tartozás között szoros összefüggés fedezhetõ fel, másrészt pedig az, hogy az egyetemekhez köthetõ szabadalmak és a minõségi kutatási eredmények nem zárják ki szükségszerûen egymást. A hálózatok és a szabadalmak közötti kapcsolatok tehát ígéretes témát szolgáltatnak az elemzések számára. Tanulmányunk a nemzetközi publikációk szerzõit magában foglaló hálózatok szerkezetének (pl. koncentráció, méret, integráltság) az egyetemi szabadalmakra vonatkozó hatását vizsgálja a tudástermelési-függvény alkalmazásával a Pécsi Tudományegyetem különbözõ egységeirõl gyûjtött adatokra támaszkodva.University knowledge transfer, network analysis, knowledge production function
Phrudus carpathicus Varga 2023, sp. n.
No full textPhrudus carpathicus Varga, sp. n. (Fig. 4) urn:lsid:zoobank.org:act: 4B84A25F-393B-4213-A0FD-3A81E8DA5B61 Material examined. Holotype: 1 ♀, UKRAINE: Transcarpathian Reg.: Vynogradiv Distr., Vynogradiv, beech forest, 48.138338, 23.073689, trunk trap on a dead Fagus sylvatica, 20.v–3.vii.2018. Paratypes: 1 ♀, the same locality and date as holotype; 1 ♀, idem, 280 m, oak forest, 48.138338, 23.073689, Malaise trap №1, 10.vi–2.vii.2017; 1 ♀, Tyachiv Distr., 6.5 km N of Mala Ugolka, 48.259464, 23.619672, 600 m, beech forest, Malaise trap №4, 13.vi– 8.vii.2015; 3 ♀, idem, 8.vii–6.viii.2015; 1 ♀, idem, Malaise trap №5, 12–31.v.2015, leg. O. Varga (SIZK). Diagnosis. Phrudus carpathicus sp. n. is characterized by the combination of the following characters: body relatively stout, not strongly compressed laterally (Fig. 4A); head in lateral view with temple widest at the level of the upper end of the eye; antenna with 15 flagellomeres, flagellomeres 4–5 each with a white tooth-like projection on basal 0.2–0.3 of flagellomere (Fig. 4E); mesoscutum elongate, with notauli present anteriorly, but weak; scuto-scutellar groove with longitudinal wrinkles laterally (Fig. 4D); propodeum distinctly carinated, areas basalis, superomedia and apicalis are separated and transversely wrinkled (Fig. 4C); fore wing with vein 3rs-m almost complete, areolet only narrowly open apically (Fig. 4F); all femora brown. Phrudus carpathicus sp. n. belongs to the P. defectus group in having flagellomeres 4–5 each with a white tooth-like projection on the basal 0.2–0.3 of the flagellomere, and the presence of notauli. The newly described species is similar to P. badensis in the shape of the temples (in lateral view) and leg colour, but the body is not strongly compressed. Phrudus carpathicus sp. n. differs from P. defectus in the elongate mesoscutum (round in P. defectus); scuto-scutellar groove with longitudinal wrinkles laterally (simple in P. defectus); separated areas basalis and superomedia (largely fused in P. defectus), fore wing with vein 3rs-m largely present (absent in P. defectus) and dark femora. Description. Female. Holotype (Fig. 4). Body length approximately 3.9 mm. Fore wing 3.3 mm. Head (Figs 4B, D–E) smooth and sparsely pubescent. Antenna with 15 flagellomeres, first flagellomere ca 1.2× as long as wide; flagellomeres 4–5 each with a white tooth-like projection on basal 0.2–0.3 of flagellomere (Fig. 4E). Face about 0.5× as long as wide, swollen centrally, transversely wrinkled and sparsely punctate; eyes weakly divergent to clypeus, pubescent. Malar space 0.9× basal width of mandible; subocular sulcus absent. Clypeus 0.35× as long as wide, same sculpture as face, weakly separated from face, rounded apically. Mandible bidentate, upper tooth slightly longer than lower tooth. Temples relatively long and straight, narrowed behind eyes (dorsal view); largest width of temple (in lateral view) at level of upper end of eye (Fig. 4E). Frons and vertex smooth, sparsely pubescent; ocellar-ocular distance 2.1× maximum diameter of lateral ocellus; occipital carina complete. Mesosoma (Figs 4C–D) generally smooth and weakly sculptured. Propleuron smooth and densely pubescent. Pronotum smooth, weakly wrinkled centrally and along posterior edge, densely pubescent in upper half; epomia distinct. Mesoscutum elongate, smooth and densely pubescent; notauli present anteriorly, but weak. Scutellum with same sculprture as mesoscutum; scuto-scutellar groove wide, with longitudinal wrinkles laterally (Fig. 4D). Mesopleuron smooth, pubescent only anteriorly, weakly longitudinally wrinkled in lower half; epicnemial carina strong, reaching 0.5 of mesopleuron. Metapleuron smooth, strongly longitudinally wrinkled; pleural and submetapleural carinae distinct.Propodeum smooth, distinctly carinated, transversely wrinkled between lateromedian longitudinal carina; area superomedia weakly asymmetric, ca 1.2× as wide as long, separated from area basalis (Fig. 4C). Legs relatively stout; hind femur 2.7× as long as wide; third tarsomere of hind tarsus about as long as fifth tarsomere; tarsal claws pectinate to apex. Wings (Fig. 4F). Fore wing with vein 2 rs-m about 0.8× distance between 2 rs-m and 2 m-cu; vein 3rs-m largely present, areolet only narrowly open apically; vein 1cu-a opposite or weakly distad to M & Rs; hind wing with nervellus not intercepted, vertical. Metasoma (Fig. 4G) smooth and minutely pubescent. First tergite 1.6× as long as apical width, longitudinally wrinkled; carinae distinct. Second tergite 0.65× as long as apical width with laterotergite separated by fold; remaining tergites lacking laterotergites, smooth, but relatively more denser pubescent. Ovipositor about 0.9× as long as hind tibia. Colour. Body generally black. Antenna, mandible (except apices), legs (except coxae and femora) reddish. Coxae and femora brownish. Metasoma with tergite 1 black; remaining tergites brownish-black; tergites starting from third narrowly banded posteriorly with yellow. Ovipositor sheaths, pterostigma and veins brown. Variability. One female is smaller (fore wing ca 2.5 mm), with a strongly sculptured mesopleuron and more distinct notauli. Male. Unknown. Etymology. The new species is named after the type locality, the Carpathian Mountains. Distribution. Currently known only from the beech and dry oak forests of Transcarpathia in Western Ukraine.Published as part of Varga, Oleksandr, 2023, The genera Astrenis Förster, 1869 and Phrudus Förster, 1869 (Hymenoptera, Ichneumonidae: Tersilochinae) in the Ukrainian Carpathians, pp. 584-592 in Zootaxa 5315 (6) on pages 588-590, DOI: 10.11646/zootaxa.5315.6.6, http://zenodo.org/record/814257
Gnathochorisis malavensis Varga 2021, sp. n.
No full textGnathochorisis malavensis Varga, sp. n. urn:lsid:zoobank.org:act: 69E112C7-0387-491F-9C9B-0961CEBB8F9E (Fig. 1) Material examined. Holotype: female, KENYA, Western Province, Malava Forest, 1619 m, 0.46372° N, 34.85727° E, Malaise trap in indigenous forest, 4–18.v.2017, leg. R. Copeland (Deposited in: ICIPE). Paratypes: female, same locality as holotype, 1–15.vi.2017 (Deposited in: SIZK); female, Western Province, Kakamega Forest, nr. KFS HDQTRs, 1620 m, 0.23742° N, 34.86607° E Malaise trap in indigenous forest, 19.iv–2.v.2017, leg. R. Copeland (Deposited in: ICIPE). Diagnosis. Gnathochorisis malavensis sp. n. is characterized by the combination of the following characters: fore wing with areolet closed (vein 3 rs-m present), face, meso- and metapleuron, and second metasomal tergite black, second tergite distinctly granulate except apex, third tergite smooth, unsculptured, propodeum smooth, unsculptured. Description. Holotype. Female (Fig. 1). Body length approximately 2.7 mm, fore wing 2.0 mm. Head (Fig. 1B) generally smooth and sparsely pubescent. Antenna with 18 flagellomeres, first flagellomere 1.3 × the length of the second, flagellomeres; maximum diameter of lateral ocellus 0.8 times × the length of the ocellar-ocular distance; inner margins of eyes diverging downwards; face about 0.7 × as long as wide, smooth, weakly granulate centrally, covered with long setae; clypeus moderately convex, about 0.4 × as long as wide, distinctly separated from face, notched apically, smooth, covered with long setae; malar space about as long as the basal width of mandible; subocular sulcus distinct; mandible narrow, weakly twisted, both teeth visible, upper tooth longer than lower tooth; occipital carina largely absent dorsally; temples strongly narrowed behind eyes, short. Mesosoma (Fig. 1C, D). Propleuron smooth, sparsely pubescent; pronotum smooth, epomia absent; mesoscutum weakly transverse, with notauli absent, densely pubescent; scutellum convex, smooth, sparsely pubescent, with lateral carina present basally; mesopleuron smooth, densely pubescent ventrally, epicnemial carina present on lower half of mesopleuron; metapleuron smooth, submetapleural carina strong, pleural carina present and complete; propodeum (Fig. 1C) smooth and sparsely pubescent, with well-developed carinae, area basalis weakly defined apically, area superomedia fused with area apicalis. Legs stout, hind femur 3.2 × longer than wide; fifth tarsomere 1.4 × as long as third tarsomere. Fore wing with areolet closed (vein 3 rs-m present); vein cu-a opposite to Rs&M. Hind wing nervellus weakly inclivous, with distance between first abscissa of Cu and M weakly longer than vein cu-a. Metasoma (Fig. 1E) generally smooth and impunctate. First tergite 2.5 × as long as apical width, granulate, dorsolateral carina distinct on basal 0.9 of the tergite, but weak, median longitudinal carina distinct and strong, reaching the apex of the tergite, glymma absent; second tergite 0.7 × as long as apical width, distinctly granulate except apex; third tergite smooth and unsculptured; ovipositor (Fig. 1D) up-curved, the length from tip of hypopygium about 0.9 × length of hind tibia. Colour. Body black. Scape, pedicel, first flagellomere, mandible (except apex), upper hind corner and lower angle of pronotum narrowly orange; legs generally yellowish-orange, except hind coxa partly, hind femur apically, hind tibia largely and tarsus entirely brown; pterostigma and veins brown, ovipositor orange. Male. Unknown. Variability. Second metasomal tergite vary from distinctly transverse to subquadrate. Hind legs in one paratype largely brown: coxa, femur and tarsus entirely and tibia except base. Distribution. Currently known only from Kenya. Etymology. This species is named after the type locality, Malava forest.Published as part of Varga, Oleksandr, 2021, First record of the genus Gnathochorisis Förster, 1869 (Hymenoptera: Ichneumonidae: Orthocentrinae) from the Afrotropical region, with descriptions of two new species from Kenya, pp. 441-446 in Zootaxa 5052 (3) on pages 442-444, DOI: 10.11646/zootaxa.5052.3.9, http://zenodo.org/record/557228
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