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Browsing 02.National Laboratory Astana by Type "Conference Paper"

Browsing 02.National Laboratory Astana by Type "Conference Paper"

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  • A design for large-area fast photo-detectors with transmission-line readout and waveform sampling 
    Adams, B.; Anderson, J. T.; Attenkofer, K.; Bogdan, M.; Byrum, K.; Drake, G.; Insepov, Z. (In Real Time Conference, 2009. RT'09. 16th IEEE-NPSS (pp. 49-61). IEEE., 2009)
    We present a preliminary design and the results of simulation for a photo-detector module to be used in applications requiring the coverage of areas of many square meters with time resolutions less than 10 picoseconds and ...
  • Advanced Surface Polishing For Accelerator Technology Using Ion Beams 
    Insepov, Z.; Norem, J.; Hassanein, A.; Wu, A. T. (American Institute of Physics, 2009-03)
    Surface erosion problems are common in the development of TeV accelerators, fusion and fission reactors, semiconductor, optical and magnetic storage devices, and Extreme Ultra-Violet (EUV) lithography devices. We have ...
  • A General Model of Vacuum Arcs in Linacs 
    Norem, J.; Insepov, Z. (Proceedings of NAPAC2016, Chicago, IL, USA, 2017-01)
    We are developing a general model of breakdown and gradient limits that applies to accelerators, along with other high field applications such as power grids and laser ablation. We have considered connections with failure ...
  • An Assessment of Universal Dependency Annotation Guidelines for Turkic Languages 
    Tyers, Francis; Washington, Jonathan; Çöltekin, Çağrı; Makazhanov, Aibek (Tatarstan Academy of Sciences, 2017-10-21)
    Annotated corpora of three Turkic languages – Turkish, Kazakh, and Uyghur – were released as part of version 2 of the Free/Open-Source Universal Dependencies (UD) syntactic and morphological annotation guidelines. The ...
  • Beam-Induced Electron Loading Effects in High Pressure Cavities for a Muon Collider 
    Chung, M.; Tollestrup, A.; Jansson, A.; Yonehara, K.; Insepov, Z. (Proceedings of IPAC’10, Kyoto, Japan, 2010)
    Ionization cooling is a critical building block for the realization of a muon collider. To suppress breakdown in the presence of the external magnetic field, an idea of using an RF cavity filled with high pressure hydrogen ...
  • Breakdown in RF cavities 
    Norem, J.; Hassanein, A.; Insepov, Z.; Konkashbaev, I. (Proceedings of 2005 Particle Accelerator Conference, Knoxville, Tennessee, 2005)
    We present a simple model of breakdown in rf cavities. For most events this involves tensile stress and tensile strength, however other effects can also contribute. We discuss the effects of different materials, fatigue, ...
  • Character-based Deep Learning Models for Token and Sentence Segmentation 
    Toleu, Alymzhan; Tolegen, Gulmira; Makazhanov, Aibek (Tatarstan Academy of Sciences, 2017-10-21)
    In this work we address the problems of sentence segmentation and tokenization. Informally the task of sentence segmentation involves splitting a given text into units that satisfy a certain definition (or a number of ...
  • Comparison of back-scattering properties of electron emission materials 
    Insepov, Z.; Ivanov, V.; Jokela, S.; Wetstein, M. (Proceedings of 2011 Particle Accelerator Conference, New York, 2011)
    We use “microscopic” Monte Carlo (MC) simulations, empirical theories, and comparison with experiments to identify the influence of back-scattered electrons and the saturation effect on the emissive properties of materials ...
  • Computational problems in modeling arcs 
    Norem, J.; Insepov, Z. (American Institute of Physics, 2016-10)
    We explore the reasons why there seems to be no common model for vacuum arcs, in spite of the importance of the field and the level of effort expended over more than one hundred years.
  • Computer simulation of bubble formation 
    Insepov, Z.; Bazhirov, T.; Norman, G.; Stegailov, V. (Joint International Topical Meeting on Mathematics & Computation and Supercomputing in Nuclear Applications, 2007-04)
    Properties of liquid metals (Li, Pb, Na) containing nanoscale cavities were studied by atomistic Molecular Dynamics (MD). Two atomistic models of cavity simulation were developed that cover a wide area in the phase diagram ...
  • Computer simulation of decaborane implantation and rapid thermal annealing 
    Insepov, Z.; Aoki, T.; Matsuo, J.; Yamada, I. (IEEE. Ion Implantation Technology Proceedings, 1998 International Conference, 1999-12)
    Molecular Dynamics (MD) and Metropolis Monte- Carlo (MMC) models of monomer B and decaborane implantation into Si and following rapid thermal annealing (RTA) processes have been developed. The implanted B dopant and Si-atomic ...
  • A distributed platform for speech recognition research 
    Kozhirbayev, Zhanibek; Islam, Shynggys (National Laboratory Astana, 2016-06-17)
    Distributed and parallel processing of big data has been applied in various applications for the past few years. Moreover, huge advancements took place in usability, economic efficiency, and multiplicity of parallel ...
  • Document and Word-level Language Identification for Noisy User Generated Text 
    Kozhirbayev, Zhanibek; Yessenbayev, Zhandos; Makazhanov, Aibek (The IEEE 12th International Conference Application of Information and Communication Technologies, 2018-10)
    We present herein our work on language identification applied to comments left by the readers of online news sites popular in Kazakhstan. Such comments are typically written in one of the two languages spoken widely in the ...
  • High Surface Fields in Superconducting rf Cavities. In Proceedings of SRF 
    Norem, J.; Insepov, Z.; Bauer, P.; Seidman, D.N.; Sebastian, J.; Yoon, K. (Proceedings of the 12th International Workshop on RF Superconductivity, Cornell University, 2005)
    Field emission in cavities requires electric fields that can be high enough to damage materials. We outline a model of breakdown and field emission from local asperities, and show how electric field effects, and field ...
  • Ion Solid Interaction And Surface Modification At RF Breakdown In High‐Gradient Linacs 
    Insepov, Z.; Norem, J.; Veitzer, S. (American Institute of Physics, 2011-06)
    Ion solid interactions have been shown to be an important new mechanism of unipolar arc formation in high-gradient rf linear accelerators through surface self-sputtering by plasma ions, in addition to an intense surface ...
  • Kazakh and Russian Languages Identification Using Long Short-Term Memory Recurrent Neural Networks 
    Kozhirbayev, Zhanibek; Yessenbayev, Zhandos; Karabalayeva, Muslima (11th IEEE International Conference on Application of Information and Communication Technologies, 2017-09)
    Automatic language identification (LID) belongs to the automatic process whereby the identity of the language spoken in a speech sample can be distinguished. In recent decades, LID has made significant advancement in spoken ...
  • Local electrical properties of PTB7 film 
    Yedrissov, A.; Alekseev, A.; Ilyassov, B. (Materials Today: Proceedings, 2017-01-01)
    Abstract A study of the spreading of currents and current-voltage characteristics in a pure PTB7 thin film by atomic force microscopy (AFM) technique was carried out in order to investigate the processes of transport of ...
  • Modeling arcs 
    Insepov, Z.; Norem, J.; Vetizer, S.; Mahalingam, S. (American Institute of Physics, 2011-12)
    Although vacuum arcs were first identified over 110 years ago, they are not yet well understood. We have since developed a model of breakdown and gradient limits that tries to explain, in a self-consistent way: arc triggering, ...
  • Modeling vacuum arcs in linac structures 
    Norem, J.; Moretti, A.; Insepov, Z.; Nurkenov, S. (Proceedings of PAC2013, Pasadena, 2013)
    We describe our vacuum arc model, which divides breakdown into four stages: trigger, plasma formation, plasma evolution and surface damage. We have modeled all four stages numerically and find that the properties of surface ...
  • Molecular dynamics study of implant and damage formation in low-energy boron cluster ion implantation 
    Aoki, T.; Matsuo, J.; Insepov, Z.; Yamada, I. (Ion Implantation Technology Proceedings, 1998 …, 1999, 1999)
    Cluster ion implantation using decaborane (B,J-I,,) has been proposed as a useful technique for shallow junction formation. In order to examine the characteristics and advantages of cluster ion implantation, molecular ...