23 research outputs found
Learning on Riemannian Manifolds for Interpretation of Visual Environments
No full textClassical machine learning techniques provide effective methods for analyzing data when the parameters of the underlying process lie in a Euclidean space. However, various parameter spaces commonly occurring in computer vision problems violate this assumption. We derive novel learning methods for parameter spaces having Riemannian manifold structure and present several practical applications for scene analysis. The mean shift algorithm on Lie groups is a generalization of the mean shift proce-dure which is also an unsupervised learning technique for vector spaces. The derived procedure can be used to cluster data points which form a matrix Lie group. We present an application of the new algorithm for multiple 3D rigid motion estimation problem from noisy point correspondences in the presence of outliers. The approach performs simultaneous estimation of all the motions and does not require prior specification of the number of motion groups. We present a novel geometric framework to learn a supervised classification model for data points lying on a connected Riemannian manifold. The structure of the classifier is an additive model, where the weak learners are trained on the tangent spaces of th
Motor Coordination in Primary School Students: The Role of Age, Sex, and Physical Activity Participation in Turkey
No full textMotor coordination (MC) is an essential skill underpinning precise and controlled movements, contributing significantly to daily functioning and overall performance. The developmental trajectory of MC in children is intricately shaped by a spectrum of factors encompassing age, gender, and physical activity engagement. Delving into the complex interrelation of these variables holds the potential to unravel nuanced developmental trends and offer targeted avenues for interventions aimed at augmenting motor proficiency in the pediatric population. This study aimed to assess the differences in MC of primary school students based on sex, age, and physical activity participation (PAP). A total of 848 students from public primary schools, aged between 6–9 years, including 412 boys and 436 girls. The MC was measured using Körperkoordinationstest für Kinder (KTK3+) test battery, which included Jumping sideways (JS), Balancing backward (BB), Moving sideways (MS), and Eye–Hand Coordination (EHC). One-way multivariate analysis of variance (MANOVA) was used to determine the binary and triple interactions of sex, age, and PAP variables on the MC parameters of the participants. The study revealed that boys aged 6–9 had higher scores than girls on eye–hand coordination (EHC) (p p p < 0.05). The double co-effects or triple co-effects of age, sex, and PAP parameters do not influence the KTK parameters. This study presents evidence supporting sex differences in the motor skills of children within this age range and highlights the potential impact of age and physical activity on motor development
The effects of the communicating branch between medial and lateral plantar nerves on the innervations of the foot lumbrical muscles
No full textBozer, Cuneyt (Trakya author)
Donmez, Didem
Parlak, MuhammedIntroduction: The communicating branches between the medial (MPN) and lateral (LPN) plantar nerves aren't frequently observed in relation to the innervation of the foot muscles in previous studies. In this study, the number and localization of the communicating branch on the innervations of foot muscles were evaluated to open a new sight considering the innervations of lumbrical muscles. Material and methods: 30 formalin-fixed feet (15 right-15 left feet), with an average age of 76 from the inventory of Trakya and Mersin University Anatomy Departments in 2015 were dissected. The innervations of the lumbricals and the communicating branches were revealed and then photographed. Results: In all feet, first lumbricals were observed to be innervated by MPN, while the remaining muscles were innervated by deep branches of LPN. In four cadaveric feet, communicating branches of MPN, LPN and deep branch of LPN were appeared but, in one of them, proximal to the branches of MPN and LPN to lumbricals, a communicating branch between MPN and deep branch of LPN were observed. Discussion: Data about the innervations of the lumbricals were found to be consistent with the previous studies. Taking into account the localization of the communicating branches between the MPN and LPN, it should be considered that nerve injuries during surgical procedures such as flexor tendon transfers, island flap surgery, treatment of hallux valgus or lesser toes deformity in the foot and ankle region may unexpectedly lead to different functional failures. (C) 2018 Anatomical Society of India. Published by Elsevier, a division of RELX India, Pvt. Ltd. All rights reserved
Leber’s Hereditary Optic Neuropathy as a Promising Disease for Gene Therapy Development
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Disidentification, mimicry, melancholia and image: queer reconfigurations in contemporary visual arts
No full textThis thesis analyses expressions of queer tendencies in contemporary visual arts. Its main objective is to focus on gender-conscious strategies of performative excess realized by mimicries and triggered by identification and identity troubles. I use 'queer' to conceptualize a performance which perturbs hetero-normative dialectics of visual representation and disrupts the dynamics of its fixating recognition. I refer to the word 'tendency' in order to indicate the latency and/or the valency of the image in such a performance.
Concentrating on the oeuvres of David Hockney, Robert Mapplethorpe, Del LaGrace Volcano, Cindy Sherman, Nan Goldin, Gilbert & George, Jake & Dinos Chapman, Todd Haynes and Derek Jarman, this thesis attempts to rethink ethics and aesthetics in the intersecting domains of queer theory, pastiche and contemporary artistic practice. My work focuses on the visual discourses of pastiche and parody in order to critically investigate the possibilities and the impasses of strategic mimicries, for instance the rhetoric of 'drag', with regard to representation. My case studies explore sexually informed methods of miming and pastiching and investigate the kind of dialogue that such narcissistic textual modes of queer self-consciousness might provoke. I read the art-works of these nine artists in terms of their possible affinities with queer problematizations of prevailing ideas about sexed, gendered, sexualized body. I treat these modes of mimicry, such as drag, copy, camp, pastiche and parody, within a logic of textual and sexual penetrations and consider them as queer practices of improper incorporations in the field of vision. My thesis further advances the argument that the queer performativities and thus the postmodern pastiche-effects in these visual modes encode a liminalized authorial signature, as well as authored modes of deviant temporalities. By means of detailed discussions of these nine key figures, I aim to demonstrate various author-functions in queer narrations of body and to consider ways in which they diversely utilize the aggressively melancholic and/or the radically narcissistic possibilities of the Queer in a critical aesthetic practice of surface and depth
Edward Bond’un Sandalye Oyunları’nda İktidar
No full textEdward Bond is among the original playwrights that guided contemporary English theatre through the rationalist theatre he developed, the subjects tackled, the characters in his plays, and who affected the succeeding playwrights most of all. Bond, who penned more than fifty works between his first play The Pope's Wedding (1962) and his last play Dea (2016), expressed violence tirelessly, which he regards as the biggest problem of contemporary societies. The Chair Plays, consisting of the plays titled The Under Room, Chair, and Have I None, are about the problem of power. The Chair Plays take place in 2077, and the social environment in which people under the pressure of totalitarian state apparatus are ruled unilaterally, is presented to audience through a biopolitical reality that surrounds them. In the Chair Plays, individuals who constitute the next human generations are shown in such a captive situation that they cannot have a say over their lives. Bond, who draws a very pessimistic picture provides a little light of optimism and tries to show the audience the last exit before the bridge by making them think about what might happen in 2077. The aim of this study is to reveal the totalitarian social system that guides Edward Bond's The Chair Plays, and to uncover the chaos environment created by the biopolitical power mechanisms in which the author highlights the dystopian aspects and the ways to escape from it. In this context, the concept of biopolitics is discussed in mediation of Michel Foucault's and Zygmunt Bauman's views, and the escape area that Edward Bond weaves with pessimism is attempted to be captured
Author Correction: Liver Transplantation for Hepatocellular Carcinoma: Malatya Experience and Proposals for Expanded Criteria.
No full textThe original version of this article unfortunately contained a mistake in the author group section
Determination and testing of strain parameters in landslide region of Koyulhisar, Turkey
No full textKoyulhisar in Turkey is in danger of landslides, and to determine the risk of landslides in this area, many projects and studies are currently being conducted. Between 2007 and 2008, global navigation satellite system measurements were made, providing data on seasonal effects. The displacements, and also the forces behind these displacements, need to be studied. These forces may be determined using various methods. One method is the determination of strain parameters. With regard to the maximum and minimum principal strain parameters obtained (lambda(1)=56.3433 mu s, lambda(2)=-35.4642 mu s) from the city centre measurements, there is statistically significant stress accumulation in the Koyulhisar region. Furthermore, for the compression and contraction directions obtained in the city centre, compression was obtained in the north-south direction and contraction movement was obtained in the east-west direction. These movement directions show that the tectonic movements in the region have an effect on the landslide.[DPT 2006K 120220]; [CUBAP M368]The GNSS data used in this study were obtained from the DPT 2006K 120220 and CUBAP M368 projects. In addition, GMT (Wessel and Smith 1998) software was used for the map drawings. Kemal Ozgur Hastaoglu and Cuneyt Aydin are gratefully acknowledged for their support and comments. The author would also like to thank the reviewers for their valuable comments that helped to improve the paper
Augmentation of the Calf Region with Autologous Fat and Platelet-Rich Plasma-Enhanced Fat Transplants: A Comparative Study
No full textBackground: Contour and volume deficiencies in the calf region, either unilateral or bilateral, may raise an esthetic concern in affected individuals. There are numerous methods described for volume augmentation or contour reshaping in this region including implant placement, autogenous tissue transfer, liposuction, and/or fat injections. The authors present their series of patients to whom they performed fat injections with or without platelet-rich plasma (PRP) enrichment for addressing this problem. Methods: Fifty-two patients who had undergone calf lipostructuring procedure(s) in our clinic were included in this retrospective study. The procedure was repeated with a fixed value of fat volume per leg until a satisfactory limit for both the patient and the senior author could be achieved. Regarding the analysis of outcome, the number of sessions needed to be repeated was recorded for each patient. Results: 125 cc of fat was injected per session per leg. Ten patients were treated with PRP enriched fat transplants while 42 were treated with fat only. The mean number of sessions was 2.76 (min. 2, max. 6). For the group treated with PRP-enriched fat grafts a mean 2.00 number of sessions had to be carried out while the mean was 2.95 for the patients in the fat-only group. The mean number of sessions to achieve our goal was significantly lower in the PRP-enriched fat injected group (P < 0.001). Conclusion: Addition of PRP significantly reduces the need of repeated operations to achieve the best possible outcome in lipostructuring around the calf region
Geochemistry of dacitic volcanics in the Eastern Pontides (NE Turkey)
No full textDacitic rocks that crop out around the Zigana Mountain (GumuAYhane) in the eastern Pontide (NE Turkey), are mainly composed of quartz, plagioclase, sanidine, amphibole, muscovite, and biotite as the main minerals. Zircon and rutile are the accessory minerals. Pyrite, chalcopyrite, and covellite are the opaque components. On the basis of trace-element data, dacites have been classified as Dacite-I and Dacite-II. Dacite-I is tholeitic-transitional, whereas Dacite-II is transitional-calc-alkaline. The geochemical variation can be explained by the fractionation of the common mineral phases, such as plagioclase, hornblende, magnetite, and apatite. Dacites also show island-arc properties, with negative Nb, Sr, P, and Ti anomalies. The trace-element distrubitions of the dacitic rocks reflect the typical characteristics of rocks from the subduction-related tectonic setting, with enrichment of large-ion lithofile elements and light rare-earth element, but depletion in high-field-strength elements. The dacitic rocks are developed through plagioclase +/- hornblende-controlled fractionation from the same parental magma that settled in two successive stages and are derived from an enriched source, probably by the mixing of slab-derived and lithospheric melts.KTU Research FundKaradeniz Technical University [2001.112.005.1]This paper was improved based on a part of the Ph.D. Thesis of the first author. The authors thank P. Moller from the GFZ (Potsdam-Germany), K. Heide from the Institute of Earthsciences of the Friedrich-Schiller University (Jena-Germany), Peter Halbach, Bernhard Pracejus and Margret Halbach from Geochemistry, Hydrogeology and Mineralogy of the Freie University, (Berlin, Germany), the DAAD (German Academic Exchange Service), and the KTU Research Fund (Project no. 2001.112.005.1) for major and trace element analyses, and also Cuneyt en and V. R. Troll for win contribution to the paper. The contributions of editor and Dr. N.L. Mironov are greatly appreciated.WOS:0003342437000042-s2.0-8489807963
