122 research outputs found
Classification of 2-symbol orthogonal arrays of even-strength t and t + 2 columns up to OD-equivalence
No full textBulutoglu and Ryan [Australas. J. Combin. 70 (2018), 362–385] developed the concept of OD-equivalence of 2-symbol orthogonal arrays (OAs) that captures the symmetries present in the even-strength cases that cannot be captured by array isomorphism. In this paper, we improve upon the classification results up to isomorphism of Stufken and Tang [Ann. Stat. 35 (2007), 793–814] by classifying all non-OD-equivalent 2-symbol OAs of even-strength t with t + 2 columns and index λ. The classification results up to OD-equivalence that we obtain are significantly simpler than the classification results up to isomorphism of Stufken and Tang in the aforementioned paper. © The author(s)
The Dimension of an orbitope based on a solution to the Legendre pair problem
No full textThe Legendre pair problem is a particular case of a rank-1 semidefinite description problem that seeks to find a pair of vectors (u,v) each of length ℓ such that the vector (u⊤,v⊤)⊤ satisfies the rank-1 semidefinite description. The group (Zℓ×Zℓ)⋊Z×ℓ acts on the solutions satisfying the rank-1 semidefinite description by ((i,j),k)(u,v)=((i,k)u,(j,k)v) for each ((i,j),k)∈(Zℓ×Zℓ)⋊Z×ℓ. By applying the methods based on representation theory in Bulutoglu [Discrete Optim. 45 (2022)], and results in Ingleton [Journal of the London Mathematical Society s(1-31) (1956), 445-460] and Lam and Leung [Journal of Algebra 224 (2000), 91-109], for a given solution (u⊤,v⊤)⊤ satisfying the rank-1 semidefinite description, we show that the dimension of the convex hull of the orbit of u under the action of Zℓ or Zℓ⋊Z×ℓ is ℓ−1 provided that ℓ=pn or ℓ=pqi for i=1,2, any positive integer n, and any two odd primes p,q. Our results lead to the conjecture that this dimension is ℓ−1 in both cases. We also show that the dimension of the convex hull of all feasible points of the Legendre pair problem of length ℓ is 2ℓ−2 provided that it has at least one feasible point
Erratum: Safety of psychotropic medications in people with COVID-19: Evidence review and practical recommendations (BMC Medicine (2020) 18 (215) DOI: 10.1186/s12916-020-01685-9)
No full textThe original version of this article [1] unfortunately included an error to an author’s name. Author Serdar Dursun was erroneously presented as Dursun Serdar. The author name has been updated in the original article and included in the author list of this Correction
The Second Person Point of View in Tarik Dursun K.’S Stories: “You” (Singular / Plural) Language
No full textTürk edebiyatının önemli isimlerinden Tarık Dursun K., 1950’li yıllardan itibaren Türk öykücülüğüne yeni bir soluk getirmiştir. Modernizmin yeni estetik dönüşümüne ayak uydurarak öykülerinde farklı anlatı biçimlerini deneyen yazar, özellikle Türk edebiyatı içinde sık rastlanmayan ikinci kişili anlatıcı tipini öykü evrenine yerleştirmesiyle dikkati çeker. Bu çalışmada, ikinci kişili anlatıcının yazar tarafından neden tercih edildiği ve nasıl bir kuruluşla anlatı yapısına dâhil edildiği soruları üzerinden, yazarın öykülerinden seçilen en çarpıcı örneklerle ikinci kişili anlatıcı yapısının genel bir şablonunun çıkarılması amaçlanmıştır. Böylece hem ikinci kişili anlatıcı tipinin kavramsal olarak tanınmasına hem de Tarık Dursun K.’nın öykülerindeki “sen/siz” dilinin çözümlenerek anlamlandırılmasına imkân yaratılmıştır.Tarık Dursun K., one of the most significant names of Turkish literature, breathed new life into Turkish story writing as of 1950s. The author, who tries different narration styles in his stories by keeping up with the new aesthetical transformation of modernism, stands out with the way he places second person point of view ?rare in Turkish literature? in the world of story. In this study, it is aimed to draw a general schema of the second person point of view with the most stunning examples taken from the author’s stories, and by means of the questions related to why this point of view is chosen by the author and what kind of structure is used to include it. Thus, an opportunity is created both to introduce the second person point of view as a concept and to interpret the “you (singular/plural)” language in Tarık Dursun K.’s stories
Finding the Dimension of a Non-empty Orthogonal Array Polytope
No full textBy using representation theory, we reduce the size of the set of possible values for the dimension of the convex hull of all feasible points polytope of an orthogonal array (OA) defining integer linear program (ILP). Our results address the conjecture that if this polytope is non-empty, then it is full dimensional within the affine space where all the feasible points of the ILP\u27s linear programming (LP) relaxation lie, raised by Appa \etal, [On multi-index assignment polytopes, Linear Algebra and its Applications 416 (23) (2006), 224--241]. In particular, our theoretical results provide a sufficient condition for this polytope to be full dimensional within the LP relaxation affine space when it is non-empty. This sufficient condition implies all the known non-trivial values of the dimension of the (k,s) assignment polytope.However, our results suggest that the conjecture mentioned above may not be true. More generally we provide previously unknown restrictions on the feasible values of the dimension of convex hull of all feasible points polytope of our OA defining ILP. We also determine all possible corresponding sets of equality constraints up to equivalence that can be implied by the integrality constraints of this ILP. Moreover, we find additional restrictions on the dimension of convex hull of feasible points and larger sets of corresponding equality constraints for the n=2 and even s cases. These cases posses symmetries that do not necessarily exist in the 3≤n or odd s cases
Investigation of countryside and rural elements in Tarık Dursun K's stories
No full textYüksek LisansBu çalışma, Tarık Dursun K. (26 Mayıs 1931 - 11 Ağustos 2015)'nın pek çok yönünün yanında öykücülüğünü esas alır. Tarık Dursun; şair, romancı, sinemacı, yayıncı ve öykücüdür. Sanat hayatına şair olarak atılmış fakat şiirde kendini iyi ifade edemediğini düşünerek öykü ve roman üzerine çalışmaya başlamıştır. Hayatı boyunca üretmeyi sürdüren yazar, aynı zamanda sinemacı yönünü de geliştirmiştir. Bu açıdan, sinema ve edebiyatı eş zamanlı işlemesi onun sanatçı kimliğinin oluşmasında önemli rol oynamıştır. Hayal gücünün zenginliğine bir de görsel teknikleri katarak edebi anlayışını oluşturan Tarık Dursun, Türk edebiyat dünyasına önemli yapıtlar kazandırmıştır. Tarık Dursun'un zengin edebiyat hayatı içinde hikayeciliği diğer türlere göre öne çıkmıştır. Çünkü yazar, az sözle çok şey anlatmayı esas edinerek kendini en çok hikâye türüne yakın görmüştür. Her türden eserinde çeşitli anlatım tarzları deneyen ve birçok konuyu ele alan Tarık Dursun, öykülerinde özellikle kendi hayatının etkilerini işlemiştir. Hikayeciliğinde gerçekçiliği esas almış, taşrada başlayıp devam eden hayatını öykülerinin merkezine yerleştirmiştir. Taşraya ait mekân, kişi ve olay ögelerini öykülerinde ustaca kullanan yazarın öyküleri, bu yönüyle taşra malzemesiyle gelişmiştir. Toplumun taşra kesiminden insanların hayatlarına dair en küçük ayrıntılar bile Tarık Dursun'un öykülerine konu olabilmiştir. Bu yönüyle taşrayı iyi tanıyıp öykülerine katan Tarık Dursun, eserlerini Türk edebiyatında taşrayı konu alan yapıtların önemli bir parçası haline getirmiştir. Bu çalışmada, Tarık Dursun'un öykülerine ve öykücülüğüne genel bir bakış ile birlikte taşra unsurları da tespit edilip yazarın öykülerindeki etkisi belirlenmiştir. Türk edebiyatında taşra konulu eserlere yön veren Tarık Dursun, taşrayı özellikle öykülerinde belirleyici bir rol olarak kullanmıştır. Bu sebeple yazarın öykülerindeki taşra unsurlarının edebi anlayışa etkisi ve Tarık Dursun'un hayatındaki taşraların öykü ögelerine etkisi önemli olup söz konusu çalışmada bu önem vurgulanmıştır. Tezimizin konusu olan Tarık Dursun'un öyküleri ve bu öykülerdeki taşra unsurlarını edebiyat dünyasına kazandırmak, Tarık Dursun ve taşra hakkında yapılacak çalışmalara kaynak olmak amaçlanmıştır.This study is based on the storytelling of Tarık Dursun K. (May 26th 1931 – August 11th 2015) as well as his many aspects. Tarık Dursun is a poet, novelist, film maker, Publisher and storyteller. He started his artistic life as a poet, but thinking that he could not Express himself well in poetry, he started working on short stories and novels. Continuing to produce throughout his life, the writer also developed his film maker aspects. In this respect, his simultaneous processing of literature and cinema has an important role on the formation of his artistic identity. Tarık Dursun, who created his literary understanding by adding visual techniques to the riches of his imagination, has brought important Works to the Turkish literature. Tarık Dursun's storytelling has come into prominence compared to other genres in his rich literary life. Because the author, based on telling a lot with a few words, has seen himself close to the type of story the most. Tarık Dursun, who tried various narrative styles and dealt with many subjects in his all kind of Works, especially dealt with the effects of his own life in hin stories. He took realism as a basis in his storytelling and at the center of his stories he placed his life, which started in the countryside and continued there. The stories of the author, who skillfully use the elements of the place, person, and event belonging to the countryside in his stories, have developed with the rural material in this aspect. Even the smallest details about the lives of people from rural parts of society could be the subject of Tarık Dursun's stories. With this aspect, Tarık Dursun, who knows the countryside well and adds it into his stories, has made his works an important part of the Works about the countryside in Turkish literature. In this study, along with an overview of Tarık Dursun's stories and short storytellimg, rural elements and the effect of author on his stories were also determined. Tarık Dursun, who directs the Works on the countryside in Turkish literature, used the countryside as a decisive role especially in his stories. For this reason, the effect of the rural elements in the author's stories on the literary understanding and the effect of the rural elements in Tarık Dursun's life on the story elements are important, and this importance is emphasized in the aforementioned study. It is aimed to bring the stories of Tarık Dursun, which is the subject of our thesis, and rural elements in these stories to the literature; and it is aimed to e a source for the studies to e made about Tarık Dursun and the countryside
Cocuk Kitaplari Dizisi #1
No full textHere is one of some 38 inexpensive Turkish editions of Aesop bought together. This paperback has the same author as four other books already in the collection. This fourth edition, after earlier editions in 1966, 1977, and 1979, is among the simplest of the 38. After an introduction on 5-16 signed by Dursun, fables follow through page 117. They are followed by a T of C. The front cover illustration drove me crazy, because I recognized it as borrowed from a French and English La Fontaine edition, but I could not place it. It is from Benvenuti in 1971; it shows a proud lion with a lavish robe.Language note: TurkishFourth editionTarik Dursun K
The religious authority and the muslim clergy in the Book "Ta ral written by Nurettin Topçu
No full textSosyolojik bir bak aç s yla de erlendirildi inde dini otorite sahibi olarakde erlendirilen ki ilerin, bilgi verme, sorunlara çözüm bulma, insanlar n ruhsal vebedensel s k nt lar n giderme gibi i levleriyle vurguland klar görülmektedir.Din e itiminin her eyden önce kalp e itimi oldu unu belirten Nurettin Topçu, DinAdaml diye bir mesle in olamayaca dü üncesindedir. Din Adam diye ayr birsosyal s n f meydana getirmenin, dinin bir dünya zanaat haline gelmesine yol açt n ifade eder. Topçu, bu konudaki fikirlerini birçok eserinde dile getirmi tir. Ta ral adl eserde 1950 li y llar Anadolu sunu anlatan hikâyeleri bir arayagetirilmi olan Topçu, bu metinlerde dinin bir otorite arac olarak kullan l na dairçarp c örnekler sunmaktad r.Bu çal mada, yazar n Ta ral adl eserinde yer alan hikâyelerinde kimi zaman anakarakter kimi zaman da yard mc kahraman olarak yer verdi i din adam tiplerindenyola ç karak, dinin bir otorite arac olarak nas l kullan labilece i, yazar n di ereserlerinde yer verdi i görü leri do rultusunda de erlendirmeye çal lacakt rWhen evaluated from a sociological point of view, it is seen that the people who areconsidered to have the religious authority are emphasized by their functions such asgiving information, finding solutions to problems, and solving mental and physicalproblems of people.Nurettin Topçu, who stated that religious education is to train the heart in the firstplace, believed that being a member of the Muslim clergy cannot be regarded as aprofession. He said that creating a new social class called "Muslim clergy" causespeople to consider religion as a craft. Topçu mentioned his ideas on this matter in mostof his works.Topçu s stories which tell about Anatolia in the 1950s were compiled in the book Ta ral , and through these literary texts he presented some striking examples ofusing religion as a means of authority.In this study, how religion can be used as a means of authority will be evaluated byanalysing the protagonists and supporting characters which portray the Muslim clergyin Topçu s stories compiled in Ta ral , in line with the author s views which hestated in his other work
A bit-parallel tabu search algorithm for finding E()-optimal and minimax-optimal supersaturated designs
No full textWe prove the equivalence of two-symbol supersaturated designs (SSDs) with
(even) rows, columns, , where , and resolvable incomplete block designs (RIBDs) whose any
two blocks intersect in at most points. Using this equivalence, we
formulate the search for two-symbol E()-optimal and minimax-optimal SSDs
with as a search for RIBDs whose blocks intersect
accordingly. This allows developing a bit-parallel tabu search (TS) algorithm.
The TS algorithm found E()-optimal and minimax-optimal SSDs achieving the
sharpest known E() lower bound with of sizes
, and . In each of
these cases no such SSD could previously be found
Isometopus (Isometopus) anlasi Çerçi & Dursun 2017, sp. nov.
No full text<i>Isometopus (Isometopus) anlasi</i> sp. nov. (Figures 1–10) <p> <b>Type material.</b> Holotype: ♂, <b>Turkey,</b> Istanbul, Esenyurt, 0 5.08.2015, N 41°03'02.7", E 28°40'35.8", B. Çerçi leg. Paratypes: <b>Turkey,</b> Istanbul, Esenyurt, N 41°03'02.7", E 28°40'35.8", 0 9. 0 7. 2017, 1 ♂; 13. 0 7.2017, 3♀ ♀; 13.07. 2017, 1♂; 23.07.2017, 1♂; 30.07.2016, 1♂; B. Çerçi leg.</p> <p> <b>Description. Males:</b> Size, 2.6–2.8 mm. Head yellowish brown with dense dark punctures in frons (Figs. 1, 2, 5, 7). In front view, 1.49 times as broad as high, in dorsal view 3.1–3.4 times as broad as long. Posterior margin with a narrow white stripe, apical margin carinate, two or three transverse pale callosities above the apical margin, with very few punctures on them; long and dark setae on the level of the pale callosities; frons densely punctured except on the slightly elevated and light colored almost glabrous areas between the eyes, covered with long and black pubescence, clypeus and mandibular plates with less dense and irregular black hairs. Maxillary and mandibular plates yellowish brown. Genae very low. Eyes dark red to brown, ocular index in dorsal view 0.88. Ocelli bright red, extremely hard to distinguish from the surrounding colored annuli, very protuberant, interocellar space small, 0.9–1.1 times as broad as the width of an ocellus (Fig. 7). Antennae covered with dense stiff black setae, setae mostly seeming white under bright light. Setae a little shorter than the width of the second antennal segment, antennal ratio 9: 65: 35: 14, first antennal segment black with a white apical ring, second antennal segment thick, bent outwards, proximal three fourths light brown, distal fourth dark brown with very apex narrowly whitish, 0.86 times as long as width of head, third and fourth antennal segments dark brown, both proximally and distally whitish. Pronotum 1.73 times as wide as width of head; 2.64 times as broad as long, dark brown, laterally getting lighter in color, anterior margin broadly light brown in the middle, lateral margins narrowly whitish, posterior margin with a light brown stain in the middle, coarsely and densely punctured. Vestiture of pronotum with reclining, fine, long and black simple setae; as for antennae they seem shiny white under bright light. Mesoscutum coarsely and densely punctured, dark brown with a broad light brown or orange colored elliptic pattern on each side of posterior margin, setae as in pronotum. Scutellum dark brown, puncturing and vestiture as in pronotum, apex white, two big elliptic and orange spots on sides along lateral margins. Clavus dark brown, coarsely and densely punctured, proximally orange, distally very narrowly light orange, vestiture as in pronotum. Corium coarsely and sparsely punctured, vestiture as in pronotum, dark brown except for a central orange to milky white subtriangular spot and outer margin orange, proximally and distally darker, almost brown. Exocorium orange, broad, proximally with only one to four rows of punctures along the inner margin, vestiture as in pronotum. Cuneus orange, with a narrow dark brown stripe along inner margin, setae as in pronotum. Membrane fuscous, vein dark brown, uniareolate (Fig. 5). Femora and tibiae pale, almost unicolorous. Rostrum reaching or extending slightly beyond hind coxae. Abdomen ventrally dark brown. Left paramere as in figs 9 and 10, right paramere similar to that of other species of the genus.</p> <p> <b>Females:</b> Size, 2.5 mm. Head light brown with deep dark brown punctures, dense on vertex and sparser on frons, posterior margin with a white band, 1.35 times as broad as high, 3.32 times as broad as long, apical margin with three transverse pale callosities, separated by dark brown bands, vertex and frons with sparse and short black setae; modestly raised, light and glabrous areas between the eyes as in male, but less evident and more densely punctuated, genae very high, 0.51 times as high as the height of one eye, eyes dark red with very small and sparse erect setae, ocular index 0.9, ocelli red, small, interocellar space very broad, 2.7–3 times as broad as the width of an ocellus (Fig. 8). Antennae with short, reclining black setae, seeming white under bright light, antennal ratio 15: 53: 32: 17, first antennal segment as in male, second antennal segment gracile, distally slightly swollen, 0.75 times as long as width of head, yellowish brown, proximally slightly darkened, apically dark brown and at the very apex white to yellow, last two segments as in male. Pronotum 1.85 times as broad as width of head, 2.8 times as broad as long, coarsely and densely punctuated, dark brown, laterally getting lighter, lateral margins narrowly whitish, posterior margin wave-like, a white spot in the middle of the pronotum sometimes joining the orange spots along the posterior margin of pronotum, vestiture consisting of reclining black setae. Mesoscutum and scutellum as in male. Clavus dark brown, darker than in male, coarsely and densely punctured, in some specimens proximally narrowly orange, vestiture as in pronotum. Corium dark brown, coarsely and densely punctured, in the middle with an orange elliptic spot, more or less apparent, posterior margin with two subtriangular orange spots, vestiture as in pronotum. Exocorium very broad, densely punctured throughout, dark brown except for outer margin broadly orange in proximal half, vestiture as in the pronotum. Cuneus milky white, outer margin broadly dark brown, sometimes the dark coloration outweighs the pale coloration. Membrane brown, vein broadly black (Figs. 3, 6). Femora and tibiae pale colored, very apex of tibiae narrowly darkened. Labium slender, reaching to the fourth abdominal sternite. Abdomen ventrally brown.</p> <p> <b>Last instar nymph:</b> As in Fig. 4.</p> <p> <b>Biology:</b> The specimens of the new species were collected from walnut and wild apple trees. They mostly hide among crevices of the main trunk. It is extremely hard to notice them while they are not moving. Females wander among the crevices with their rostrum thrust forward, searching for preys. Though females are able to fly, they prefer not to fly when they feel under threat but run away very fast and hide deep inside the crevices. On the contrary, males are active fliers. They do not wander much but fly from one place to the other on the tree. The specimens were collected between early July and early August.</p> <p> <b>Differential diagnosis:</b> The new species is placed in the nominotypical subgenus <i>Isometopus</i>. The new species is similar to <i>I. longirostris</i> Josifov 1993 in coloration pattern of hemelytra but it is distinguished from it by much shorter labium and presence of pale lateral spots on scutellum. In males of the new species labium reaches or extends slightly beyond hind coxae, in <i>I. longirostris</i> reaches to ninth sternite (Josifov 1993). The coloration pattern of the scutellum (two lateral orange spots and distal tip white) is unique among the <i>Isometopus</i> species of Europe and Middle East and readily a good character to distinguish this new species from all other species of the genus <i>Isometopus</i> living in this area. The new species can be distinguished from other species of Europe and Middle East by the following updated key.</p> <p> <b>Etymology.</b> The new species is dedicated to Assoc. Prof. Dr. Sinan Anlaş (Celal Bayar University, Manisa) who is a specialist working on the Staphylinidae fauna of Turkey. The first author is very grateful to him for his encouragement and help in writing scientific publications.</p>Published as part of <i>Çerçi, Bariş & Dursun, Ahmet, 2017, Isometopus anlasi sp. nov. (Heteroptera: Miridae) from Turkey in Zootaxa 4353 (2)</i>, DOI: 10.11646/zootaxa.4353.2.9, <a href="http://zenodo.org/record/1065283">http://zenodo.org/record/1065283</a>
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