Forming efficient networks

In this paper, we suggest a simple sequential mechanism whose subgame perfect equilibria give rise to efficient networks. Moreover, the payoffs received by the agents coincide with their Shapley value in an appropriately defined cooperative game.

Sôbre a glândula abdominal da fêmea de Citheronia laocoon (Cr., 1777) (Lepidoptera, Adelocephalidae)

Macho e fêmea de Citheronia laocoon emitem um cheiro repugnante. Esta substância é um componente da hemolinfa que, no momento de perigo, é expulsa através da cutícula, desconhecendo-se, porém, ainda o local da exsudação, que, entretanto deve ser procurado nas membranas intersegmentais do abdômen. A fêmea possui uma glândula atraente de organização simples, situada entre os 8.º e 9.º segmentos abdominais.

Anomalia em Coscinodiscus oculus-iridis ehrenberg, 1839 (Diatomácea)

The author describes an anomalous specimen in diatom Coscinodiscus oculus-iridis Ehr., 1839, caught from Guanabara Bat, (22º 51' 8" Lat. S. - 43º 14' 3" Long. W. G.); its dorsal face (fig. 1), is different from the ventral one, (fig. 2).

Taxorchis caviae sp. n. (Trematoda, Paramphistomidae), parasito intestinal de Cavia aperea Erxleben, 1777 (Rodentia, Caviidae)

Descreve-se uma nova espécie de trematóide paranfistomídeo, encontrado no intestino grosso de preá, Cavia aperea aperea Erxleben, 1777, roedor silvestre muito freqüente no Estado de São Paulo de outras regiões do país. Para o trematóide em apreço é proposto o nome de Taxorchis caviae sp. n. São discutidas as diferenças entre T. caviae e as espécies próximas,dos gêneros Chiorchis, Taxorchis e Stichorchis. São propostas alterações na diagnose clássica do gênero Taxorchis, de modo a nele ser incluído T. caviae.

Physa cubensis Pfeiffer, 1839 (Pulmonata: Physidae)

A description of Physa cubensis Pfeiffer, 1839, based on 15 speciments collected in Havana, Cuba, is presented. The shell, measuring 9.0 x 4,8mm to 12.3 x 6.4mm, is ovate-oblong, thin, diaphanous, horncolored, shining. Spire elevated, broadly conical; protoconch distinct, roundish, reddish-brown. About five moderately shouldered, roundly convex whorls, penultimate whorl expanded; spiral striation subobsolete; growth line faint on the intermediate whorls, clearly visible on the body whorl, crowded here and there. Suture well impressed. Aperture elongated 2.05 - 2.67 (mean 2.27) times as long as the remaining length of the shell, narrow obovulate-lunate; upper half acute-angled, lower half oval, narrowly rounded at the base; outer lip sharp, inner lip completely closing the umbilical region; a thick callus on the parietal wall; columellar plait well marked. Ratios: shell width/shell length - 0.52-0.61 (mean 0.55); spire length/shell length = 0.27 - 0.33 (mean 0.31); aperture length/shell length = 0.67 - 0.73 (mean 0.69). Oral lappets laterally mucronate; foot spatulate with acuminate tail. Mantle relection with 6 - 8 short triangular dentations in the right lobe (columellar side) and 4 - 6 in the left lobe (near the pneumostome). Renal tube tightly folded into a zigzag course. Ovotestis, ovispermiduct, seminal vesicle, oviduct, nidamental gland, uterus and vagina as in Physa marmorata (see Paraense, 1986, Mem. Inst. Oswaldo Cruz, 81: 459-469). Spermathecal body egg-shaped or pear-shaped; spermathecal ducta uniformly narrow with expanded base, a little longer than the body. Spermiduct, prostate and vas deferens as in P. marmorata (Paraense, loc. cit.). Penis wide proximally, narrowing gradually apicad; penial canal with subterminal outlet. Penial sheath following the width of the penis and ending up by a bulbous expansion somewhat narrower than the proximal portion. Penaial sheath/prepuce ration = 1,25 - 1,83 (mean 1.49). Prepuce much wider than the bulb of the penial shealth, moderately shouldered owing to the intromission of the bulb, and with a large gland in one side of its proximal half occupating about a third of its length. Extrinsic muscles of the penial complex as in P. marmorata. Jaw a simple obtusely V-shaped plate. Radula to be described separetely.

Singular integrals on Ahlfors-David regular subsets of the Heisenberg group

"Vegeu el resum a l'inici del document del fitxer adjunt."

I si deixem de parlar de preservació digital? Variacions sobre un tema de David Rosenthal, amb un poutpourri final amb la CDLib Orchestra

La preservació digital de la que parla la nostra literatura professional està plena de mites que pensem que s'han d'anar tombant un darrera l'altre, en aquesta presentació us els mencionarem.

A sure house studies on the dynastic promise to David in the books of Samuel

The dissertation studies the texts mentioning or alluding to the dynastic promise to David in the books of Samuel; in the concluding further perspectives it also overviews the occurrences of the promise in the books of Kings; in the appendix, it comments on the "Law of the King" in Deut 17,14-20, the last verse of which may contain an allusion to the Davidic promise. The study engages with recent discussion on the history of the text of 2 Sam 7. In a detailed textual commentary, it treats with all the differences between the main textual witnesses of the chapter, and apart from the evaluation of the individual variants, it attempts to answer the question whether the differences are due exclusively to the process of transmission, or they are of literary character. Special attention is paid to the value of 1 Chr 17 for the reconstruction of the oldest text of 2 Sam 7; the author hopes that the conclusions of this part of the dissertation may prove to be of some importance for a more general study of the reception of Samuel in Chronicles. The subsequent literary analysis of 2 Sam 7 and the other passages referring to the dynastic promise to David leads to two alternative datings of Nathan's oracle and consequently two alternative redactional hypotheses trying to give account of the emergence of the examined passages. In the concluding perspectives, the function of the promise in Samuel is compared with the occurrences of the motif in Kings; this comparison leads to tentative conclusions concerning the development of the relation of the two books.

The review of HSS in the case of David and Samual Briggs (The Lewis Report) - Report of the Implementation Team June 2004 (PDF 262 KB)

The review of HSS in the case of David and Samual Briggs (The Lewis Report) - Report of the Implementation Team June 2004