22,134 research outputs found
Microcaeculus andrei Lawrence
No full textMicrocaeculus andrei (Lawrence) Caeculus andrei Lawrence, 1939: 540. Microcaeculus andrei: Franz, 1952: 102. Specimens examined: Site 94 27, 2 females; Site 94 30, 1 female; Site 99 11, 2 females; Site 99 14, 1 female. Microcaeculus andrei and the following species, M. monticolus, are both endemic South African species (Lawrence, 1939). Species of Microcaeculus are known to be predatory, feeding on Collembola (Otto, 1993), which they capture by lying in wait for prey to approach (Krantz, 1978). Both species encountered in this study were rare.Published as part of Halliday, R. B., 2005, Predatory mites from crops and pastures in South Africa: potential natural enemies of redlegged earth mite Halotydeus destructor (Acari: Penthaleidae), pp. 11-64 in Zootaxa 1079 on page 28, DOI: 10.5281/zenodo.17035
Last of the Kodak”: Andrei Tarkovsky’s Struggle With Colour’
No full textIn interviews and writings throughout his career, Andrei Tarkovsky repeatedly returned to the theme of cinematic colour. He referred to it in order to repudiate it: colour film was ‘monstrous’ and ‘false’, an artistic ‘blind alley’. Despite his objections, Tarkovsky also repeatedly struggled with the Soviet bureaucracy to secure the use of Eastman Kodak colour negatives. Having secured the use of colour, he then minimised its impact in his films through a combination of desaturated production design and laboratory techniques, and counterbalanced its presence with repeated transitions between colour and black-and-white sequences. This essay explores the contradictions in Tarkovsky’s response to colour. It roots his work in the stagnation-era political economy of the Soviet Union, before moving on to an exploration of the ways in which his chromatic ambivalence manifested itself in the aesthetics of his films. The essay concludes by suggesting a final contradiction, namely that Tarkovsky’s chromatic conservatism anticipated the colour aesthetics of digital cinema
Multi-Agent Reinforcement Learning using Centralized Critics in Collaborative Environments
No full textAgents trained through single-agent reinforcement learning methods such as self-play can provide a good level of performance in multi-agent settings and even in fully cooperative environments. However, most of the time, training multiple agents together using single-agent self-play yields poor results as each agent tries to learn how to perform their task while their teammates are also learning. Thus, training models to reach an optimal behaviour in such situations becomes a challenging, if not impossible issue to overcome. One possible solution to deal with this problem is to facilitate a centralized training process in which the policies of all agents are evaluated by a centralized critic that has access to the observations and actions of all the agents in the environment. By using this approach, the environment becomes stationary and the agents learn in a similar way to using a single-agent algorithm in settings where only one agent needs to be trained. In this paper, we test whether by using a multi-agent reinforcement learning algorithm with centralized critics, as opposed to single-agent ones, we would obtain an agent that generalizes better to new partners in a collaborative environment such as Overcooked, where coordination is critical for good performance. The results display a similar performance between the two algorithms when evaluated through self-play and slightly better or worse results when paired with the human model, representing a mediocre agent, depending on the map. Thus, the multi-agent, centralized critics algorithm used in this study did not train agents that generalize better to new partners. However, the training metrics clearly indicate that the centralized critics method makes the agents learn and converge twice as fast as its single-agent version.https://github.com/andrei-07/rp-overcooked-centralized-critics Link to GitHub repositoryCSE3000 Research ProjectComputer Science and Engineerin
Licnoliodes andrei Grandjean 1931
No full text17. <i>Licnoliodes andrei</i> Grandjean, 1931 <p> <i>Licnoliodes Andrei</i>: Grandjean 1931, 234–241, figs 4–5.</p> <p> <b>Material examined. C08</b>: 25.III.2006 (2); <b>C75</b>: 24.V.2006 (23); 18.VII.2006 (23); 15.XI.2006 (12). <b>Geographic distribution.</b> Palaearctic.</p> <p> <b>Notes.</b> <i>Licnoliodes andrei</i> seems to be typical in soils rich in humus and organic matter.</p>Published as part of <i>Migliorini, Massimo, 2009, Oribatid mite (Arachnida: Oribatida) coenoses from SW Sardinia *, pp. 8-37 in Zootaxa 2318</i> on page 16, DOI: <a href="http://zenodo.org/record/192029">10.5281/zenodo.192029</a>
Tetramorium andrei Forel
No full textTetramorium andrei Forel (Fig. 14) Tetramorium {Xiphomyrmex) andrei Forel, 1891 b: 263. Syntype workers, Madagascar: Bezanozano nr Nosibe, ESE. of Antananarivo (Sikora) (MHN, Geneva) [examined]. Worker. TL 4.3 - 4.8, HL 1.04 - 1.08, HW 0.92 - 0.96, CI 87 - 90, SL 0.80 - 0.84, SI 86 - 89, PW 0.70 - 0.72, AL 1.30 - 1.34 (6 measured). Mandibles striate; median clypeal carina acute. Frontal carinae long and strong, diverging towards the occipital corners behind the level of the eyes but merging into the sculpture before reaching the occipital margin. Antennal scrobes a groove capable of containing the scape. Metanotal groove absent, not impressed in profile. Propodeal spines long and acute, the metapleural lobes short and triangular. Petiole node in profile longer than high, flat-topped or feebly convex dorsally, in dorsal view as long as or longer than broad. Dorsum of head regularly longitudinally rugose; dorsal alitrunk similarly sculptured but with some reticulation towards the sides on the pronotum. Petiole and postpetiole with rugose sculpture which is predominantly longitudinal. Gaster unsculptured except for pits from which hairs arise; these are more conspicuous in some specimens than in others. Dorsal surfaces of head and body all with numerous long, fine, erect to suberect hairs. Leading edges of antennal scape with suberect short, curved hairs. Colour light red-brown. Of the tortuosum-group species on Madagascar andrei is most closely related to robustior, originally described as an infraspecific variant of andrei, and rather more distantly to latreillei and kelleri. Differences from robustior are listed under that species. T. andrei is distinguished easily from latreillei as the latter lacks hairs on the first gastral tergite and does not have standing hairs on the antennal scapes. T. kelleri, on the other hand, has abundant long hairs, the longest on the scapes being much greater than the maximum scapai width. Also, the node shape of the petiole is radically different, compare Figs 13 and 14. Material examined Madagascar: no loc. (Staudinger); no loc. (ex coll. Mayr); Ampasimbe, prov. Tamatave (J. M. Betsch).Published as part of Bolton, B., 1979, The ant tribe Tetramoriini (Hymenoptera: Formicidae). The genus Tetramorium Mayr in the Malagasy region and in the New World., pp. 129-181 in Bulletin of the British Museum (Natural History) Entomology 38 on pages 143-14
Andrei Tarkovsky:
No full textThe author studies the originality of the film language of Andrei Tarkovsky, one of the great filmmakers of the twentieth century. For this purpose he considers the symbolic, poetic, technical and mystical elements of Tarkovsky’s seven films. Beyond the standard critics, he builds an unitary language for the interpretation of a work reputedly tight.El autor estudia la originalidad del lenguaje cinematográfico de Andrei Tarkovsky, uno de los grandes directores de cine del siglo XX. Para este propósito considera los aspectos simbólicos, poéticos, técnicos y místicos de sus siete películas. Desecha el formato de ficha crítica y construye un lenguaje unitario para la interpretación de una obra reputada como hermética
Philaethria andrei subsp. andrei Brevignon 2002
No full text<i>Philaethria andrei andrei</i> Brevignon, 2002. <p>(Figs. 18, 19)</p> <p>Lambillionea CII (4): 469–473</p> <p> <b>Type locality.</b> Carapa, Macouria, French Guyana. Type: <b>(LCB): Holotype male:</b> illustrated in Brevignon, 2002: 470, figs. 5–8 and figs. 18,19 in this paper.</p> <p> <b>Diagnosis.</b> Forewing length 51 mm in males and 57 mm in females. <i>P. andrei andrei</i> is distinguished from <i>P. dido</i> and <i>P. o s t a r a</i> by the VHW outer submarginal band brown; VHW submarginal band brown and wide (very narrow in <i>P. o s t a r a</i>), inner postdiscal band black, medial postdiscal band brown with scattered gray scales. FW anal cell bar black. HW postcellular spots 1–3 small.</p> <p> <b>Haploid chromosome number:</b> n=12 (voucher specimen fig.20). Additional material examined from French Guiana (Brevignon 2002), Venezuela (Delta del Amacuro) Brazil (Pará, Marajó island) (Suoamalainen & Brown, 1984)</p> <p> <b>Male genitalia (Fig. 38):</b> As illustrated. Saccus short and straight, vinculum stout, slightly curved and swollen, tegumen rounded distally without setae; uncus long and straight, tapering gradually to pointed tip; gnathos long and curved distally; valvae with a long basal hook, reaching the tip of the uncus; valvae with a swollen arm with a round head armed with microspines all over; aedeagus long and straight, tapering gadually to pointed tip.</p> <p> <b>Distribution and habitat.</b> <i>P. andrei andrei</i> is restricted to rainforest habitats in the lower Amazon basin (Guiana shield from Venezuela (El Manteco, Bolivar) down to French Guiana (Carapa, Macouria), extending south along the coast to northern Pará (Island of Marajó, Brazil) between 100– 200 m. <i>P. andrei andrei</i> flies sympatrically with <i>P. dido dido.</i></p> <p> <b>Host plants.</b> <i>Passiflora laurifolia</i> (Passifloraceae) in French Guiana (Brevignon 2002)</p> <p> <b>Immature stages.</b> Brevignon (2002) illustrates the egg, larva and pupa of <i>P. andrei</i> from French Guiana. Eggyellow, 1.6 mm high and 1.2 mm in diameter, with 22 vertical and 12 horizontal ridges, laid singly on tendrils. Mature larva - body white cream with black marking on dorsum and sides; base of each scoli with orange fused together forming small orange bands. Scoli large and orange with black tips; head capsule beige and head scoli black. Pupa (Fig. 42 k)- shape like <i>P. dido</i> but with wing pads light brown, mottled with white. Abdomen with a lateral brown band from the cremaster to the first segment; abdomen with four pairs of keels; thorax with 4 dorsal gold reflective dots.</p> <p> <b>Material examined. FRENCH GUIANA:</b> MACOURIA: Carapa, 100m, C. Brevignon <i>leg.</i> (LCB); Larivot, 100 m, C. Brevignon <i>leg.</i> (LCB). <b>VENEZUELA:</b> BOLIVAR: El Manteco, 100 m, K. S. Brown <i>leg.</i> (KSB), <b>BRAZIL</b>: PARA: Souré, Illha de Marajó, Amazon river, K.S. Brown <i>leg.</i> (KSB)(Suomalainen & Brown, 1984)</p>Published as part of <i>Constantino, Luis Miguel & Salazar, Julian A., 2010, A review of the Philaethria dido species complex (Lepidoptera: Nymphalidae: Heliconiinae) and description of three new sibling species from Colombia and Venezuela, pp. 1-27 in Zootaxa 2720</i> on pages 15-16, DOI: <a href="http://zenodo.org/record/199882">10.5281/zenodo.199882</a>
The Andrei Bely Prize: History and Perspectives of Russia’s First Independent Literary Prize
No full textThe Andrei Bely literary prize was established in 1978 in
Leningrad by B. Ostanin, A. Dragomoshchenko, B. Ivanov, and Yu. Novikov (the editorial
board of the samizdat journal «Chasy»). It aimed to reward writers of the city’s non-official
‘second’ culture and became a key reference point for Russia’s literary underground. The
prize was the first independent award in the Soviet Union and the first to celebrate authors
and works associated with non-mainstream culture. It demanded that underground literature
be acknowledged and took a stance of resistance against the dictates of socialist realism.
From the collapse of the Soviet Union, the prize was awarded irregularly until 1997, when,
in the light of the new political scenario it was reinstated. The aim of this paper is to examine
the relationship between the Andrei Bely prize and other literary prizes in Russia, analyse
how it has changed over the last 40 years, and reflect on its significance and role in today’s
worl
1993 -- Correspondence, Miscellaneous -- letter, 1993-01-26
No full textLetter from Kuzminov, Andrei to Sabin, Albert B. dated 1993-01-26.Sabin Collection Fair Use Policy</a
Tetramorium andrei
No full textTetramorium andrei species complex This species complex is the largest within the T. tortuosum group with the nine species T. ala,T.andohahela,T. andrei,T. elf,T. isectum,T. isoelectrum,T. electrum,T. nify, and T. voasary. The forecoxae are usually completely or mostly unsculptured, smooth, and shining, although sculpture is sometimes present. What sculpture is present is mostly superficial and generally does not consist of strongly longitudinally arranged rugae. Instead, it is reticulate-punctate with few superimposed rugulae or traces of rugulae. In a few species (e.g. T. elf,T. voasary) the forecoxae are partly rugulose, but the sculpture is comparatively weak, and never covers the whole coxa as in the T. smaug species complex. The sculpture may appear longitudinal at first glance, but this is due to sections of linearly arranged reticulate-punctate sculpture, not true rugae/rugulae (e.g. T. isoelectrum). The first gastral tergite is always completely devoid of any sculpture, and fairly smooth and shining.Published as part of Hita Garcia, F. & B. L. Fisher, 2012, The ant genus Tetramorium Mayr (Hymenoptera: Formicidae) in the Malagasy region - taxonomic revision of the T. kelleri and T. tortuosum species groups., pp. 1-85 in Zootaxa 3592 on page 2
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