187,514 research outputs found
Further properties of Azimi-Hagler Banach spaces
No full textsummary:For the Azimi-Hagler spaces more geometric and topological properties are investigated. Any constructed space is denoted by . We show \item {(i)} The subspace generated by a subsequence of is complemented. \item {(ii)} The identity operator from to when is unbounded. \item {(iii)} Every bounded linear operator on some subspace of is compact. It is known that if any is a dual space, then \item {(iv)} duals of spaces contain isometric copies of and their preduals contain asymptotically isometric copies of . \item {(v)} We investigate the properties of the operators from spaces to their predual
Stefano Mannoni : Une et indivisible. Storia dell'Accentramento Amministrativo in Francia. Vol. I : La Formazione del Sistema (1661-1815). Coll. « Per la storia del pensiero giuridico moderno ». 1994
No full textAzimi Vida. Stefano Mannoni : Une et indivisible. Storia dell'Accentramento Amministrativo in Francia. Vol. I : La Formazione del Sistema (1661-1815). Coll. « Per la storia del pensiero giuridico moderno ». 1994. In: Dix-huitième Siècle, n°28, 1996. L'Orient. p. 601
Roxana Azimi, La Folie de l'Art brut
No full textDepuis l’apparition du concept en 1967, l’Art brut n’a eu de cesse de ponctuer l’histoire de l’art, jusqu’à son explosion en termes de visibilité dans la sphère de l’art actuel. Dans cet ouvrage, Roxana Azimi s’interroge sur ce regain d’intérêt pour les marges, l’art outsider ou singulier. Dans un premier temps, « Qu’est-ce que l’art brut ? » (p.15-65), l’auteure retrace les conditions historiques d’apparition de l’Art brut, un retour nécessaire pour l’appréhension de cette désignation baigna..
Vida Azimi, « Les droits de l'homme-fonctionnaire », Revue historique de droit français et étranger
No full textBeaud Olivier. Vida Azimi, « Les droits de l'homme-fonctionnaire », Revue historique de droit français et étranger. In: Genèses, 2, 1990. A la découverte du fait social, sous la direction de Robert Salais. p. 195
Redescription of aceria varia and tegoprionus dentatus (Trombidiformes: Eriophyoidea: Eriophyidae) from Iran
No full textThis paper describes two eriophyid species, poorly detailed in the past, which have been found for the first time in Iran. Aceria varia (Nalepa) (Eriophyinae: Acerini) was collected on Populus alba L. (Salicaceae) and Tegoprionus dentatus (Nalepa) (Phyllocoptinae: Anthocoptini) on Galium aparine L. (Rubiaceae) in Miandoab region of West Azerbaijan province (Iran). More information about the type host plants, other hosts and habitus of five Aceria species associated with P. alba and a gross comparison of some traits among Tegoprionus species known worldwide are provided
An electromagnetism metaheuristic for the unicost set covering problem
No full textIn this paper we propose a new heuristic algorithm to solve the unicost version of the well-known set covering problem. The method is based on the electromagnetism metaheuristic approach which, after generating a pool of solutions to create the initial population, applies a fixed number of
local search and movement iterations based on the ‘‘electromagnetism” theory. In addition to some random aspects, used in the construction
and local search phases, we also apply mutation in order to further escape from local optima.
The proposed algorithm has been tested over 80 instances of the literature. On the classical benchmark instances, where the number of columns is larger than the number of rows, the algorithm, by using a
fixed set of parameters, always found the best known solution, and for 12 instances it was able to improve the current best solution. By using different parameter settings the algorithm improved 4 additional best known solutions.
Moreover, we proved the effectiveness of the electromagnetism metaheuristic approach for the unicost
set covering problem by embedding the procedures of the proposed algorithm in a genetic algorithm scheme. The worse results obtained by the genetic algorithm show the impact of the electromagnetism metaheuristic approach in conducting the search of the solution space by applying the
movements based on the electromagnetism theory. Finally, we report the results obtained by modifying the proposed electromagnetism metaheuristic algorithm for solving the non-unicost set covering problem
Basiria khouzestanensis Eisvand & Nejad & Azimi 2019, n. sp.
No full text<i>Basiria khouzestanensis</i> n. sp. <p>Figs 1, 2</p> <p> <b>Description.</b> Measurements, see Table 1.</p> <p> <i>Female</i>. Body ventrally arcuate following heat fixation. Cuticle annuli 0.7–1.2 µm wide at mid-body. Lateral field with four incisures, 3.6–4.8 µm wide, occupying 28–30% of body diameter, with non-areolated bands. Lip region smooth and elevated, continuous with body contour, 2.4–3.1 µm high and 4–5.4 µm wide. Amphidial apertures oblique and slit-like. Stylet straight with rounded basal knobs, slightly posteriorly directed, 0.8–1.5 µm across. Dorsal pharyngeal gland orifice (DGO) 4–6 µm posterior to stylet knobs. Median bulb oval, 9–12 µm long and 4–6.6 µm wide, with a weakly developed valve; located at about the middle of the pharynx. Isthmus slender. Basal bulb short and almost pyriform to slightly cylindrical, 6–9.5 µm wide and 12–16.5 µm long. Cardia small. Excretory pore mostly at the level of anterior part of the pharyngeal bulb or rarely at the level of the beginning of the basal bulb, posterior to hemizonid. Nerve ring surrounding the middle part of the isthmus. Reproductive system monodelphic-prodelphic, composed of an outstretched ovary with oocytes arranged in a single row. Spermatheca non-offset, elongated, filled with rounded sperm, 18–36 µm long and 6.5–12 µm wide. Vulva a transverse slit lacking flaps or epiptygma. Vagina 6–7.8 µm long, about one half of body diameter. Post-vulval uterine sac (PUS) 70–77% of corresponding body width in length. Tail elongate-conoid, about equal to the vulva-anus distance, tail terminus variously shaped, mostly slightly rounded to pointed tip in some specimens with a broadly rounded to slightly clavate tip.</p> <p> <i>Male</i>. Less frequent than female and shorter. General morphology similar to that of female, except for character states associated with sexual differences. Testis single, outstretched; Spermatocytes arranged in a single row. Spicules tylenchoid, small and slightly ventrally arcuate. Gubernaculum simple, rod-shaped. Bursa adanal, simple, with smooth margins. Tail similar to that of the female.</p> <p> <b>Type host and locality.</b> Soil samples collected from the rhizosphere of orange (<i>Citrus sinensis</i> L.) in the vicinity of Baghmalek city in Khouzestan Province, GPS coordinates: 31° 32′ 21.5″ N, 49° 50′ ″ E, southwestern Iran.</p> <p> <b>Etymology.</b> The new species name refers to the province name where it was found.</p> <p> <b>Type material.</b> Holotype, 13 females and 8 males paratypes deposited at the nematology laboratory of the Department of Plant Protection, Shahid Chamran University of Ahvaz, Ahvaz, Iran. Two female and one male paratypes deposited at the Wageningen Nematode Collection (WaNeCo), Wageningen, The Netherlands (collection number: WT 3724).</p> <p> <b>Diagnosis and relationships.</b> <i>Basiria khouzestanensis</i> <b>n. sp.</b> is characterized by having short body length (430–635 µm), lateral fields composed of four incisures, with non areolated bands, cephalic region smooth and continuous with body contour, stylet 9–12.5 µm long, basal bulb short and pyriform to slightly cylindrical, V = 63.3 (58–65.5), spermatheca non-offset, tail elongate-conoid, tail tip with various shapes and males with 16.5 (15– 18) µm long spicules.</p> <p> Due to the median bulb located at about the middle of the pharynx and basal bulb pyriform to slightly cylindrical, the new species comes close to <i>B. babhi</i> Siddiqi, 1986, <i>B. brevia</i> (Sultana, 1980) Hashim, 1985, <i>B. graminophila</i> Siddiqi, 1959, <i>B. lauta</i> Randhawa, Khera & Khan, 1996 and <i>B. shahidi</i> Khan, 1982.</p> <p> Compared to <i>B. babhi</i>, the new species has a shorter body (430–635 <i>vs</i> 740–760 µm), lower <i>c</i> ratio (4.9–6.7 <i>vs</i> 8), lower <i>V</i> and <i>V</i> ŕatio (58–65.5 <i>vs</i> 77–78 and 75.1–80 <i>vs</i> 88–89, respectively), tail tip with various shapes (pointed tip and rounded to slightly clavate <i>vs</i> only broadly rounded terminus).</p> <p> Compared to <i>B. brevia</i>, the outer bands of the lateral fields in the new species are smooth (<i>vs</i> distinctly crenate). It also differs in longer body length (430–635 <i>vs</i> 390–420 µm), longer stylet and more posterior DGO (9– 12.5 <i>vs</i> 7.5–8.5 and 4–6 µm <i>vs</i> just behind the stylet base, respectively), basal bulb pyriform to slightly cylindrical (<i>vs</i> pyriform), longer tail (86–120 <i>vs</i> 71–74 µm) and male present (<i>vs</i> unknown).</p> <p> Compared to <i>B. graminophila</i>, the outer bands of the lateral fields in the new species are smooth (<i>vs</i> distinctly crenate), basal bulb pyriform to slightly cylindrical (<i>vs</i> pyriform) and there are remarkable differences in 28S rRNA gene sequences. There was only one record in GenBank for sequence of D2–D3 expansion segments of 28S rRNA gene for <i>B. graminophila</i>. Sequence variation between new species and <i>B. graminophila</i> were 24.6% (133 bp).</p> <p> Compared to <i>B. lauta</i>, the new species has basal bulb pyriform to slightly cylindrical (<i>vs</i> pyriform), higher <i>c</i> ratio (9.3–13.8 <i>vs</i> 5.8–6.6), more posterior DGO (4–6 <i>vs</i> 3.5 µm), tail tip with various shapes (pointed tip and rounded to slightly clavate <i>vs</i> only clavate terminus) and males present (<i>vs</i> unknown).</p> <p> Finally, the new species also resembles <i>B. shahidi</i>, but differs from it by the shorter tail (86–120 <i>vs</i> 134–140 µm), tail tip with various shapes (<i>vs</i> only pointed terminus), and in shorter spicule and gubernaculum lengths (15– 18 vs 21–24 and 3.8–5.5 vs 6–7 µm, respectively).</p> <p> <b>Molecular phylogenetic status.</b> Partial sequencing of the 28S rRNA gene (D2–D3 region) of the new species yielded a fragment of 683 nt. The result of a Blast search using this fragment revealed the highest similarity with three unidentified species of the genus <i>Basiria</i> (JQ004998, JQ004999 and JQ005000) with identities of 87%, 87% and 86%, respectively. A total of 42 isolates of Tylenchidae (ingroup members) and Aphelenchoididae Skarbilovich, 1974 (as outgroup taxa) were selected for LSU rDNA gene (D2–D3 region) phylogenetic analyses. This dataset comprises 822 total characters. The phylogenetic relationships between the new species and representatives of Tylenchidae, as inferred from the Bayesian inference (BI) analysis, are presented in Figure 3. The sequenced isolate from the present study is in boldface.</p> <p> All isolates of <i>Basiria</i> species formed one clade. The monophyly of this clade is highly supported (BPP = 0.99). The new species clusters in a subclade containing three unidentified species of the genus <i>Basiria</i> from Iran (JQ004998, JQ004999 and JQ005000) with high support (BPP = 1.00). <i>B. graminophila</i>, <i>B. gracilis</i> and one unidentified species of the genus <i>Basiria</i> (DQ077803), formed another subclade with high support (BPP = 1.00).</p>Published as part of <i>Eisvand, Payam, Nejad, Reza Farrokhi & Azimi, Sedighe, 2019, Description of Basiria khouzestanensis n. sp. (Nematoda: Tylenchidae) from Iran and its phylogenetic relationships with other species in the family, pp. 482-490 in Zootaxa 4563 (3)</i> on pages 483-487, DOI: 10.11646/zootaxa.4563.3.4, <a href="http://zenodo.org/record/2601410">http://zenodo.org/record/2601410</a>
A Variable Neighborhood Search and its Application to a Ring Star Problem Generalization
No full textWe address the Capacitated m-Ring-Star Problem (CmRSP) in which the aim is to find m rings (simple cycles) visiting a central depot, a subset of customers and a subset of potential (Steiner) nodes, while customers not belonging to any ring must be “allocated” to a visited (customer or Steiner) node. Moreover, the rings must be node-disjoint and the number of customers allocated or visited in a ring cannot be greater than the capacity Q given as an input parameter. The objective is to minimize the total visiting and allocation costs. The problem is a generalization of the Traveling Salesman Problem, hence it is NP-hard. We present a new approach based on Variable Neighborhood search (VNS), also incorporate the algorithm with an Integer Linear Programming (ILP) based improvement procedure to enhance the quality of the solutions. Comparing the proposed VNS method with the best state-of-the-art algorithms for the CmRSP on a large variety of instances, clearly shows the superiority of the proposed approach
A Heuristic Procedure for the Capacitated m-Ring-Star Problem
No full textIn this paper we propose a heuristic method to solve the Capacitated m-Ring-Star Problem which has many practical applications in communication networks. The problem consists of finding m rings (simple cycles) visiting a central depot, a subset of customers and a subset of potential (Steiner) nodes, while customers not belonging to any ring must be “allocated” to a visited (customer or Steiner) node. Moreover, the rings must be node-disjoint and the number of customers allocated or visited in a ring cannot be greater than the capacity Q given as an input parameter. The objective is to minimize the total visiting and allocation costs. The problem is a generalization of the Traveling Salesman Problem, hence it is NP-hard.
In the proposed heuristic, after the construction phase, a series of different local search procedures are applied iteratively. This method incorporates some random aspects by perturbing the current solution through a “shaking” procedure which is applied whenever the algorithm remains in a local optimum for a given number of iterations. Computational experiments on the benchmark instances of the literature show that the proposed heuristic is able to obtain, within a short computing time, most of the optimal solutions and can improve some of the best known results
On the classes of hereditarily Banach spaces
No full textsummary:Let denote a specific space of the class of Banach sequence spaces which were constructed by Hagler and the first named author as classes of hereditarily Banach spaces. We show that for the Banach space contains asymptotically isometric copies of . It is known that any member of the class is a dual space. We show that the predual of contains isometric copies of where . For it is known that the predual of the Banach space contains asymptotically isometric copies of . Here we give a direct proof of the known result that contains asymptotically isometric copies of
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