1,739,811 research outputs found
Dialogical Skirmishes
Full text linkTan was guest editor for 'And Now China?', a special print edition of the Ctrl+P journal, which critically responded to the celebratory rhetoric’s of ‘China Now’ and other celebratory markers of China's global ascent in 2008. As well as the introductory article 'Dialogical Skirmishes', Tan also interviewed Hans Ulrich Obrist
Evidence for erbium-erbium energy migration in erbium(III) bis(perfluoro-p-tolyl)phosphinate
No full textCopyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. This article appeared in Applied Physics Letters 92, 103303 (2008) and may be found at
Uner Tan Syndrome: History, Clinical Evaluations, Genetics, and the\ud Dynamics of Human Quadrupedalism
No full textAbstract: This review includes for the first time a dynamical systems analysis of human quadrupedalism in Uner Tan syndrome, which is characterized by habitual quadrupedalism, impaired intelligence, and rudimentary speech. The first family was discovered in a small village near Iskenderun, and families were later found in Adana and two other small villages near Gaziantep and Canakkale. In all the affected individuals dynamic balance was impaired during upright walking,and they habitually preferred walking on all four extremities. MRI scans showed inferior cerebellovermian hypoplasia with slightly simplified cerebral gyri in three of the families, but appeared normal in the fourth. PET scans showed a decreased glucose metabolic activity in the cerebellum, vermis and, to a lesser extent the cerebral cortex, except for one patient,\ud
whose MRI scan also appeared to be normal. All four families had consanguineous marriages in their pedigrees,\ud
suggesting autosomal recessive transmission. The syndrome was genetically heterogeneous. Since the initial discoveries\ud
more cases have been found, and these exhibit facultative quadrupedal locomotion, and in one case, late childhood onset. It has been suggested that the human quadrupedalism may, at least, be a phenotypic example of reverse evolution. From the viewpoint of dynamic systems theory, it was concluded there may not be a single factor that predetermines human quadrupedalism in Uner Tan syndrome, but that it may involve self-organization, brain plasticity, and rewiring, from the many decentralized and local interactions among neuronal, genetic, and environmental subsystems
Two New Cases of Uner Tan Syndrome: One Man\ud with Transition from Quadrupedalism to Bipedalism;\ud One Man with Consistent Quadrupedalism
No full textBackground: Uner Tan syndrome, first described in\ud
2005, consists of three main symptoms: habitual\ud
locomotion on all four extremities, impaired\ud
intelligence, and dysarthric or no speech. This\ud
extremely rare syndrome shows an autosomal\ud
recessive inheritance due to consanguineous\ud
marriages between parents. In general, there is a\ud
cerebellovermial hypoplasia with a mild gyral\ud
simplification in the cerebral cortex. Truncal ataxia is\ud
the main neurological finding, causing difficulty in\ud
standing and upright walking on two legs.\ud
Methods: As soon as the new cases came to light, the\ud
family was visited. After taking the basic information\ud
about the family members, the traditional neurological\ud
examinations were performed, MRI scans of the\ud
patients and of a healthy family member were taken in\ud
a hospital nearest to the residence (a small village\ud
near Kars, Turkey). The patients were also filmed to\ud
analyze their walking patterns.\ud
Results: Two individuals (case 1, 44y; case 2, 43y)\ud
among six siblings from a family with consanguineous\ud
parents exhibited Uner Tan syndrome, with\ud
quadrupedalism, impaired intelligence, and dysarthric\ud
speech. Their pedigree suggested an autosomal\ud
recessive inheritance. MRI scans showed inferior\ud
cerebellovermial and pontobulbar hypoplasia.\ud
Case 1 did not display hypotonia, while case 2 had\ud
been hypotonic for two years after birth. Case 2’s\ud
hypotonia progressively disappeared, and at three\ud
years old he started to sit, and could walk on all fours\ud
by the age of four. Case 1 was quadrupedal for 20\ud
years, and then walked upright with the aid of a\ud
walking stick. Tendon reflexes were normal in case 1\ud
but hyperactive in the lower extremities of case 2;\ud
Babinsky was absent in case 1 but bilaterally present\ud
in case 2. There was no nystagmus, no strabismus,\ud
and no pes pedus in either case. Cognition was\ud
severely impaired in both.\ud
Conclusion: The emergence of quadrupedalism\ud
during development, with a transition into bipedalism\ud
in case 1, and the emergence of the quadrupedalism\ud
after a full hypotonia and no locomotion in case 2,\ud
were considered as examples of the processes of\ud
adaptive self-organization, from the viewpoint of\ud
dynamic systems theory
Uner Tan Syndrome: Review and Emergence of Human Quadrupedalism in Self-Organization, Attarctors and evolutionary Perspectives
No full textUner Tan syndrome, discovered in 2005 by Dr. Tan, in Southern Turkey, mainly consists of habitual quadrupedal locomotioni impaired intelligence, and dysarthric or no speech, with or without (rarely) cerebello-vermial hypoplasia and mildly simplified cortical gyri. \ud
This syndrome may be considered wthin the framework of the nonprogressive autosomal recessive cerebellar ataxias, associated with various genetic mutations (genetic heterogeneity). This is a unique condition among disequilibrium syndrome, Cayman ataxia, and Joubert syndrome. \ud
From the viewpoint of dynamical systems theory, there may be not a single factor including a ganetic code that predetermines the emergence of human quıadrupedalism, seen for instance in Uner Tan syndrome. Rather it may involve self-organization process, consisting of many decentralized and local interactions among neuronal, genetic, and environmental subsystems
Performance maximization of network assisted mobile data offloading with opportunistic Device-to-Device communications
No full textA. Serdar Tan (MEF Author)Mobile data traffic inside mobile operator's infrastructure is increasing exponentially every year. This increasing demand forces mobile network operators (MNOs) to seek for alternative communication methods in order to relieve the traffic load in base stations, especially in highly populated and crowded environments. Network assisted data offload and Device-to-Device(D2D) communications are two prominent methods to help MNOs solve this problem. In this study, a data offload framework is developed that incorporates network assisted multiple attribute decision making (MADM) for best network selection and D2D communications for exploiting user proximity in crowded environments. The performance of the framework is evaluated with simulation results as well as analytic solutions and performance bounds. The simulation results indicate the superiority of incorporating network-based information besides user-based information in offloading decisions and demonstrates the significant benefits of D2D communications when the density of D2D users is properly adjusted. The simulation results depict that up to 168% and 200% increase in user satisfaction and throughput can be achieved under high network load scenarios at optimal D2D density. (C) 2018 Elsevier B.V. All rights reserved.WOS:0004411171000032-s2.0-85047401058Science Citation Index ExpandedArticleUluslararası işbirliği ile yapılmayan - HAYIRAğustosYÖK - 2017-1
Additions to the moss flora of Endau Rompin National Park, Johore State, peninsular Malaysia
No full textIn a recent survey of the Endau Rompin National Park (ERNP) in Johore State, 81 species and 4 varieties of mosses were documented. This increases the previous count from 62 species and 3 varieties of mosses in ERNP to 111 species and 5 varieties in total. Of these, 30 species are new records for Johore State. Rhaphidostichum bunodicarpum and Trichosteleum stigmosum are two species new to Peninsular Malaysia. Thuidium assimile is a new record for West Malesia. A new combination, Papillidiopsis aquaticum (Dix.) Boon-Chuan Ho & B.C. Tan is proposed. In terms of species composition, the pan-tropical families of Calymperaceae, Fissidentaceae, Leucobryaceae and Sematophyllaceae predominate the moss flora of ERNP
Free thinking - running
No full textWe've been running for two million years give or take. Shahidha Bari and Laurence Scott explore contemporary running as solitary inspiration and communal activity with the Geographer and 1999 Scottish Hill Running Champion, Hayden Lorimer, the artists Kai Syng Tan and Angus Farquhar, and the literary scholar and bare-foot artiste, Vybarr Cregan-Reid. Conversation ranges from feeling empowered on city streets to teaming up with the wind to the horrid history of the treadmill and explore whether Running deserves better representation in the arts. Guests: Vybarr Cregan-Reid - author of Footnotes How Running Makes Us Human Angus Farquhar, Creative Director of NVA Public Art, author of a blog 'The Grim Runner' Hayden Lorimer Running Geographer Kai Syng Tan, Artist and curator of a biennial festival Run Run Run Producer: Jacqueline Smith
EVIDENCE FOR "UNER TAN SYNDROME" AS A HUMAN MODEL FOR REVERSE EVOLUTION
No full text“Uner Tan Syndrome” was further studied in a second family. There was no cerebellar atrophy, except a mild vermial atrophy in MRI scans of the affected individuals. This is not, however, the pathogenesis of the “Uner Tan Syndrome”, since in the first and second families there were bipedal men exhibiting very similar MRI scans. The second family may also be considered a live model for reverse evolution in human beings. The present work provided evidence for a reverse evolution: (i) quadrupedality; (ii) primitive mental abilities including language; (iii) curved fingers during wrist-walking of the quadrupedal woman; (iv) arm to leg ratios being close to those of the human-like apes. The quadrupedal individuals were raised in separate places, so that they could not imitate each other, excluding the socio-cultural factors contributing to the habitual quadrupedal gait. The results are consistent with the single gene theory, suggesting a single gene controlling multiple behavioral traits, and the psychomotor theory, and a co-evolution of the human mind, an emergent property of the motor system expressed by human language
Tan Malaka, Gerakan Kiri, Dan Revolusi Indonesia
No full textJudul Asli : Verguisd en vergeten; Tan Malaka, de linkse beweging en de Indonesische Revolutie, 1945-1949xx, 378 p. : Il.; 24 c
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