26,305 research outputs found
Andrei Tsygankov: “The US establishment, not the Kremlin, is undermining normalisation with Russia”
No full textThe release of an intelligence report on Russian interference in the US presidential election, alongside allegations of links between Donald Trump and the Kremlin, have strained US-Russia relations. Andrei P. Tsygankov argues that there remains a deep-rooted fear of Russia within the American establishment, but that Donald Trump’s election provides an opportunity for the two countries to normalise their relations
Identification of <i>E. andrei</i> GlcAT-P.
No full text<p>(A) Comparison of the amino acid sequences of human and <i>E. andrei</i> GlcAT-P proteins. Amino acid sequences are shown as a single-letter code. Amino acids that are conserved between human and <i>A. andrei</i> are shaded. (B) The predicted tertiary structure of <i>E. andrei</i> GlcAT-P. The tertiary structure of <i>E. andrei</i> GlcAT-P was modeled using the structure of human GlcAT-P as a template. In each GlcAT-P structure, UDP binding regions and amino acid residues in the active site are shown as a ball and stick models, respectively. The position of the UDP binding region in <i>E. andrei</i> GlcAT-P is based on the human GlcAT-P structure.</p
Messor andrei
No full textMessor andrei (Mayr 1886d) E2 [endemic to California floristic province (Hickman, 1993)]Published as part of Ward, P. S., 2005, A synoptic review of the ants of California (Hymenoptera: Formicidae)., pp. 1-68 in Zootaxa 936 on pages 1-6
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
Saldula andrei Drake 1949
No full textSaldula andrei Drake, 1949 Saldula andrei Drake, 1949a: 3−4 (original description). Three paratypes are deposited in NMPC: PARATYPE (♀): ‘Aztec, N. M. / Aug. 26, 1937 / Drake & Andre [p] // Paratype [p] / Saldula / andrei / D. & C. [p, red label] // Saldula / andrei / C.J.D. Drake [hw, white label with black frame submarginally] // Mus.Nat.Pragae / Inv. [p] 1051 [hw, orange label] // ♀ [p]’. PARATYPE (♀): ‘San Carlos, Ariz. / August 17, 1934 / Carl J. Drake [p] // Paratype [p] / Saldula / andrei / D. & C. [hw, red label] // Mus. Nat. Pragae / Inv. [p] 1052 [hw, orange label] // ♀ [p]’. PARATYPE (♀): ‘Eagle Nest Lake / New Mex IX, 1934 / Carl J. Drake [p] // Paratype [p] / Saldula / andrei / D& C. [hw, red label] // Saldula / andrei / C.J.D. Drake [hw, white label with black frame submarginally] // Mus. Nat. Pragae / Inv. [p] 1053 [hw, orange label] // ♀ [p]’. Current status. Valid species: Saldula andrei andrei Drake, 1949 (see POLHEMUS 1985 a, 1988; SCHUH et al. 1987).Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 873, DOI: 10.5281/zenodo.574073
Réponse à P. Bovet
No full textGorea Andrei. Réponse à P. Bovet. In: Bulletin de psychologie, tome 39 n°375, 1986. Jugement et langage. Hommage à Georges Noizet. p. 372
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
Temnothorax andrei Mayr 1861
No full textTemnothorax andrei (Emery 1895d) (Figure 7) Leptothorax andrei Emery 1895d: 322. Holotype worker, Martinez, California (Turner) [MCSN] [Examined] Leptothorax nitens var. Heathii Wheeler 1903d: 245. Twelve syntype workers, Pacific Grove, California [MCZC] [Examined]Syn. nov. [Incorrectly synonymized under nitens by Creighton 1950a: 265.] Leptothorax nitens subsp. occidentalis Wheeler 1903d: 245. Two syntype workers, Friday Harbor, Washington [MCZC] [Examined]Syn. nov. [Incorrectly synonymized under nitens by Creighton1950a: 265.] Leptothorax ocellatus Mackay 2000: 383. Holotype worker, 5 mi W Mineral, Tehama Co., California, 4250' (D. Chandler) [MCZC] [Examined]Syn. nov. Temnothorax andrei (Emery); Bolton 2003: 271. First combination in Temnothorax. Temnothorax ocellatus (Mackay); Bolton 2003: 272. First combination in Temnothorax. Comments. Temnothorax andrei is a common species at low and medium elevations (0- 1800 m) in California and adjacent western states. The workers are yellow to yellowbrown, lightly sculptured, and with relatively short, blunt-tipped pilosity. The head is predominantly longitudinally reticulate/carinulate with weakly shining interspaces, and with a smooth, shiny median strip of variable extent. A characteristic feature is the presence of a small, isolated shiny patch of cuticle on the head, posteromesad of the compound eye, and surrounded by sculpture. The mesosoma is reticulate-foveolate and subopaque. The propodeal spines are poorly developed and generally reduced to blunt triangular teeth. In profile the petiolar node, while slender, has an abruptly rounded (not cuneate) summit (Fig. 7). During a recent visit to MCSN (Genoa) Alex Wild matched the holotype worker of T. andrei to material from California that I had identified as this species. The unique type of T. ocellatus falls easily within the range of variation encompassed by T. andrei. The original description of T. ocellatus misrepresents some features of its morphology. The mesosoma is not as strongly arched as depicted and, although the eyes are small, they are not atypically so for T. andrei. In coastal regions of central and northern California populations of T. andrei tend to produce workers that are darker in color, with a shinier head and better developed propodeal spines. While some samples appear strikingly different from the more typical light-colored T. andrei, it is difficult to draw a sharp boundary between the coastal and inland populations because of extensive intra- and interpopulation variation. The type series of T. nitens heathii (from Pacific Grove) exemplifies this, with some workers having predominantly smooth and shiny heads and others showing varying amounts of fine reticulate /carinulate sculpture. The syntype workers of T. nitens occidentalis (from coastal Washington state) also have variably shiny heads. For both heathii and occidentalis, however, the rounded (non-cuneate) summit of the worker petiole clearly identifies them as being related to T. andrei rather than T. nitens. A failure by previous investigators to examine critically the types of heathii or occidentalis led to their being erroneously associated with T. nitens.Published as part of Ward, P. S., 2005, A synoptic review of the ants of California (Hymenoptera: Formicidae)., pp. 1-68 in Zootaxa 936 on pages 15-1
Podalonia andrei
No full textPodalonia andrei (F. Morawitz, 1889) Figures 15–28. Ammophila (Psammophila) Andréi F. Morawitz, 1889: 126 –127, ♀, lectotype, designated here, ♀ “ Kansu, Donkyr. Pot.[anin] // к. Ф Моравица [cyrillic] // Ammophila Andrei ♀ F. Morawitz” (ZISP), examined; Dalla Torre, 1897: 395; Kohl, 1906: 280; Gussakovskij, 1934: 4; Tsuneki, 1971: 150. Podalonia andrei: Bohart & Menke, 1976: 144; Wu & Zhou, 1996: 297; Li & Yang, 2005: 884; Dollfuss, 2010a: 542, 2010b:1245, 1251; Danilov, 2014: 518, 2016: 336; Wang et al., 2016: 449; Pulawski, 2016. Note. A male syntype in ZISP, bearing a label by F.F. Morawitz: “ Psammophila Andrei ♂ F. Morawitz” and collected by G. Potanin (Fig. 15) closely resembles the female of this species: it has a similar color of the metasoma and of the setae. The specimen clearly differs from the males described as andrei by Kohl, 1906 and by subsequent authors (Tsuneki, 1971; Dollfuss, 2010a, 2010b) by the shape of the penis valve (Figs 20–22). Moreover, the type specimen of Ammophila hirticeps F. Morawitz, 1893 (= Podalonia turcestanica (Dalla Torre, 1897)) synonymized with P. andrei by Dollfuss, 2010, also clearly differs from this specimen, which leads to resurrecting P. turcestanica (Dalla Torre) as a valid species. Podalonia andrei of Kohl, 1906 is described below as P. asiatica sp. nov. A female syntype with labels “Monasterium Utai. Potanin // к. Ф Моравица [cyrillic] // Psammophila Andrei ♀ F. Morawitz var. a.” is conspecific with Podalonia hirsuta (Scopoli, 1763). Diagnosis. The male of P. andrei is similar to P. hirsuta, P. altaiensis (Tsuneki, 1971), P. nigrohirta (Kohl, 1888), P. turcestanica (Dalla Torre, 1897), and P. asiatica sp. n. in having the propodeal enclosure with erect setae and predominantly black erect setae of the body, but differs by the shape of the penis valve, in having T1–T4 red (at most T1- 1/2 of T4 red in the other species). P. altaiensis, P. turcestanica, and P. asiatica sp. n. differ from P. andrei in having the entire mesosoma with black erect setae (propodeum with pale erect setae in P. andrei). The male of P. andrei differs from P. flavida, P. luffii, P. tydei, P. pungens, P. fera, and P. albohirsuta by the shape of the penis valve and in having the mesosoma with black setae only (except on the propodeum). The female of P. andrei closely resembles P. hirsuta and P. nigrohirta in having the body with black setae and the rudimentary arolia, but differs in having T1–T4 red (at most T1–T3 red in P. hirsuta and P. nigrohirta), in having scutal punctures 1–2 diameters apart anteriorly and polished scutum posteriorly (punctures at most one diameter apart in P. hirsuta and punctures mostly elongated posteriorly or the scutum longitudinally ridged in P. nigrohirta). The wings in P. nigrohirta are darker. The female of P. andrei differs from P. flavida, P. luffii, P. tydei, P. pungens, and P. kaszabi in the absence of the pale setae on the whole body and some other features (in P. flavida, P. luffii, and P. tydei, the arolia are well defined; in P. tydei, the body is covered with appressed silvery setae; in P. pungens, the metasoma is with red color more extended; in P. luffii, the foretarsus is more asymmetrical and the mandible is reddish). Description. Male. Body length 17 mm. Head. Clypeus elongate, narrowed anteriorly; apical margin slightly emarginated. Clypeus, subantennal sclerite, and paraocular area with dense appressed silvery setae. Vertex, occiput, and gena microsculptured, with scattered punctures. Erect setae of head black. Mandible and palpi black. Mesosoma. Pronotum microsculptured, sparsely punctate (punctures about 1.0–1.5 diameters apart), more or less shiny; with black erect setae. Scutum with black, erect setae; scutal punctures anteriorly less than one diameter apart, 1–2 diameters apart on disk, interspaces shiny. Mesopleuron punctatorugose, with black, erect setae. Scutellum longitudinally ridged posteriorly. Metapleuron rugose, with black and some pale erect setae. Propodeum rugose, with pale erect setae. Tegula black. Wings slightly smoked, brownish; veins brown; costal vein dark brown. Legs black. Claws without subbasal tooth. Spines black. Metasoma. T1–T4, S1–S4 (excluding petiole) red; petiole, T5–T7, S5–S7 black. Penis valve slender, in ventral view with small transverse spines (Figs 20–22). Female. Body length 16–18 mm. Head. Clypeus convex medially. Clypeus, subantennal sclerite, and frons without appressed setae. Vertex, occiput, and gena microsculptured, with scattered punctures. Erect setae black. Mandible and palpi black. Mesosoma. Pronotum finely microsculptured, with scattered punctures, shiny. Scutum shiny, sparsely punctate anteriorly (punctures 1–3 diameters apart), polished and with impunctate area posteriorly. Mesopleuron coarsely punctatorugose, rugose posteriorly. Propodeal enclosure rugose, with black erect setae. Metapleuron and propodeum rugose. Erect setae black. Tegula black. Wings slightly smoked, brownish; veins brown; costal vein dark brown. Legs black. Foretarsus slightly asymmetrical. Arolia rudimentary. Claws without subbasal tooth. Spines of legs black. Metasoma. T1–T4, S1–S4 (excluding petiole) red; petiole, T5–T6, S5–S6 black. Material examined: Lectotype. ♀, CHINA. Qinghai: Huangyuan [= Donkyr] [36°38′ N, 101°9′ E], G. Potanin (ZISP). Paralectotypes. Same data as lectotype (1♀, 1♂, ZISP). Distribution: Mongolia, China (Gansu, Qinghai).Published as part of Danilov, Yuriy N., 2017, Taxonomic notes on Palearctic Podalonia Fernald, 1927 (Hymenoptera, Sphecidae), with descriptions of four new species, pp. 554-570 in Zootaxa 4320 (3) on pages 557-558, DOI: 10.11646/zootaxa.4320.3.9, http://zenodo.org/record/89384
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>
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