Science & Mathematics

Avant de déclarer son amour de la chanson, ce que fait plus ou moins bien toute chanson, la chanson d’amour a pour spécificité de tenir un propos sur l’amour. Toutes les grandes questions y passent : l’amour et le temps, l’amour et la liberté, l’amour et le langage de l’amour, l’amour et l’altérité ou l’altération, l’amour et la vie sociale, etc. Mais la chanson étant un genre à la fois bref, incarné (une chanson n’existe vraiment qu’à partir du moment où un corps y engage sa voix) et refusant tout surplomb intellectuel par rapport à son auditoire, les « thèses » qu’elle promeut sur l’amour, sur sa valeur ou ses limites, ne peuvent être qu’incomplètes, partielles et partiales. C’est pourtant cette faille logique qui fait toute la valeur de la chanson. Compensée par l’intensité affective que suscite la chanson par sa mise en voix, sa mélodie, ses images, ses ellipses, les apories démonstratives de la chanson, ses paradoxes, ses contradictions ont en effet le mérite de renvoyer chaque sujet à sa propre expérience : par la chanson d’amour, le sujet chantant ou écoutant retrouve une certaine marge de manœuvre par rapport à ce qu’il vit.

Tout en s’appuyant sur la littérature scientifique, le présent écrit questionne l’impact du matériel de manipulation en résolution de problèmes chez des élèves de grande section. Il s’intéresse également à la question du choix des objets : quelle modalité (épurée ou habillée) serait la plus propice à l’apprentissage des élèves ainsi qu’à l’abstraction des concepts. Les résultats de deux situations d’apprentissage suivant des modalités dîtes épurées et habillées sont comparées. Ces derniers montrent l’intérêt de travailler la résolution de problèmes dès le cycle 1 ainsi que de varier les modalités proposées aux élèves.

La fibre des feuilles de sisal sert à la fabrication de cordage, de tissus ou de tapis

In Europe several local transmission events of mosquito-borne diseases were reportedrecently. Similarly, in Belgium mosquito-borne transmission events are likely to occur in the near future.Hence, this paper aims to assess the mosquito-borne disease threats in Belgium by focusing on threescenarios evaluating the risk of autochthonous transmission of (1) arboviruses by exotic Aedes mosquitoes,(2) malaria, and (3) West-Nile virus. Based on our assessment it is clear that the situationregarding mosquito-borne disease risk is changing in Belgium and that mosquito-borne diseases needto be considered as a public health threat.

E. alpina Lam. Cat. 280. Bis 2750 m: Rothenboden ob Zermatt (Thellung 1922); wahrscheinlich aber noch höher gehend. Abwärts bis 1350 m: zwischen Herbriggen und Randa (Heinis1927). l: Grammont (Briquet). - 3:Penninische Kette verbreitet. - 4: Aletschwald (Schröter);Rieder- alp (J.); Rappental (B. C. W.); Gerental (B. C. W.); Grimsel (Bernoulli). Var.vestita Gremli - 4:Binntal, mehrfach (Binz). Var. nana Wettstein - 3: Am Gagenbach unter dem Riffelhorn bei Zermatt, 2700 m (Brosi). Var. Gaudiniana Beauverd - Von BEAUVERD aus dem Turtmanntal, von Grächen und von Visperterminen angegebene Rasse von zweifelhafter systematischer Wertigkeit.

DEPRECATED

Anacroneuria morsei sp.n. (Figs. 6-10) Material examined. Holotype ♂ (pinned), Costa Rica, Alajuela, Rio La Paz, Rt. 9, 7.6 km N Vara Blanca, 10.208 ° N, 84.166 ° W, 1340 m, 13 February 1986, J. Morse (USNM). Paratype: Costa Rica, Guanacaste, Rio Negro, Parque Nacional Rincón de la Vieja, 10.765 ° N, 85.313 ° W, 810 m, 3 March 1986, R. Holzenthal, Fasth, 1♂ (pinned) (USNM). Adult habitus. General color yellow patterned with brown pigment. Head with dark pigment covering ocelli and extending forward and laterad of callosities; occiput dark behind eyes, lappets and an anteromedian triangular area of frons dark brown. Median pronotal band yellow, lateral areas of disc brown with darker rugosities (Fig. 6). Male. Forewing length 20 mm. Hammer a low mound (Fig. 7). Aedeagal apex weakly trilobed; large mesal lobe truncate or notched at tip, lateral lobes small and covered by conspicuous ventral membranous lobes (Figs. 8-9); hooks slender, dorsal keel absent (Fig. 10) Female. Unknown. Larva. Unknown. Etymology. The patronym honors Dr. John Morse, a distinguished trichopterist, colleague, friend, and collector of the holotype specimen. Diagnosis. The aedeagus of this species is generally similar to that of A. brailovskyi Stark & Kondratieff, 2004 a species known from Mexico (Stark & Kondratieff 2004), however in that species the aedeagal apex is expanded near the tip, the lateral lobes are less distinct and the apical section is not angled ventrad in lateral aspect as in the new species (Fig. 9). The aedeagus of a Costa Rican species, A. exquisita is also similar (Stark 1998) and the new species keys to couplet 11 in Stark (1998) which includes A. exquisita as one of the choices. However, the median lobe of the aedeagal apex is not notched and is more slender than in A. morsei. The new species is also distinct from A. brailovskyi and A. exquisita in head and pronotal pigment patterns (compare Fig. 6 with Fig. 41 in Stark 1998 and Fig. 29 in Stark & Kondratieff 2004).

Leucauge talagangiba Barrion, Barrion-Dupo & Heong, new species [ Figure 33 A-E] FEMALE. Holotype female, total length 9.55 mm. Cephalothorax length 2.80 mm, width 1.90 mm. Abdomen length 6.50 mm, width 2.00 mm. Carapace. Yellow with a brown X-like fovea and black eye margins. Cephalic parallel-sided, barely 0.7 x thoracic width (1.37: 1.97 mm) and lateral margins of thoracic area lined with short brown setae. Chelicerae yellow with brown fangs and bases of teeth, 1.8 x longer than wide and swollen frontomedially. Promargin has three teeth, middle one the largest. Retromargin has four teeth smaller than those in promargin, apical tooth strongly triangular and broad basally, third tooth the smallest and basal tooth the largest. Pedipalp yellow with hairy and spinous tarsus, tarsal claws without teeth. Dorsum of pedipalp’s tibia bears three trichobothria in increasing length towards midlength, submedian trichobothrium the longest, approximately 0.75 x tibial length and 3 x longer than tibial diameter. Maxillae yellow brown, longer than wide and almost parallel-sided. Maxillae, labium, and sternum pattern as in the genus Leucauge. Labium brown in basal two-thirds and yellow in the rebordered margins. Sternum lined with black hairs converging towards the middle, apical rows of hairs distinctly longer than those in posterior one-half. Eyes. In two rows of four. AER recurved and slightly shorter than PER (1.04: 1.06 mm). Eye diameter (mm): AME (0.13)> ALE=PME=PLE (0.11). Clypeus height 1.45 x AME diameter. Eye separation (mm): AME-ALE (0.29)> PME-PLE (0.26)> PME-PME (0.14)> AME-AME (0.11). Median ocular quad wider behind than in front (0.33: 0.39 mm) and posterior width slightly shorter than height (0.40 mm). Legs. Yellow except black anterior tip of segments, long and slender. Spination in femur I 0- 0-6 - 3, II 1 - 0-4 - 3 and IV 3 - 0-2 - 2; tibia I 2 - 0-3 - 3, II and IV 2 - 0-2 - 2; metatarsus I 1 - 0-1 - 2, II with 1 - 0-1 - 1 and IV 1 - 1 -2- 2. Femur III with eight trichobothria in two rows and femur IV with 32 trichobothria arranged in 14 for upper row and 18 in the lower row. Leg length 1243. Abdomen. Long and narrows posteriorly, green and silvery with light black anterolateral humps, two pairs of longitudinal black bands towards posterior end. Ventrally dull yellow with two longitudinal white bands, black tips of spinnerets and with three black patches posterior of the spinnerets. Spinnerets located underneath along posterior one-third of abdomen. Epigynum has median scape 1.55 x longer than wide, M-shaped hood distinct and apically narrowed spermathecae forming a thumb-like structure. MALE. Unknown. Material Examined. Holotype female (coll. no. S093), CHINA, Hainan Island, Panja town, Songtao Reservoir, 3 April 2011, ATBarrion, JLA- Catindig and SCVillareal. Paratypes: four females (coll. nos. S095-S- 97) and one subadult female (coll. no. S094), same data as for holotype. Etymology. Named derived from amalgamated Tagalog expression "talagang meaning really different. the iba" 34.

TITELCommissional-Bericht an den Stadtrath von Luzern über eine Alters- und Invaliditäts-Casse für das Lehrerpersonal der Stadt Luzern : [Luzern, den 31. Dezember 1889] / [Alfr. Steiger, Berichterstatter]AUTOR/BETEILIGTESteiger, Alfred IMPRESSUMLuzern : Bucher, 1890UMFANG22 S. ; 32 cm INSTITUTIONSNACHWEISZentral- & Hochschulbibliothek Luzern, Bro.844.fol. (1)