Search Results 1-20 of 3265

  • API Chaser: Taint-Assisted Sandbox for Evasive Malware Analysis

    Yuhei Kawakoya , Eitaro Shioji , Makoto Iwamura , Jun Miyoshi

    … We propose a design and implementation for an Application Programming Interface (API) monitoring system called API Chaser, which is resistant to evasion-type anti-analysis techniques, e.g., stolen code and code injection. … The core technique in API Chaser is code tainting, which enables us to identify precisely the execution of monitored instructions by propagating three types of taint tags added to the codes of API, malware, and benign executables, respectively. …

    情報処理学会論文誌 60(3), 2019-03-15

    IPSJ

  • Easy-going Development of Event-Driven Applications by Iterating a Search-Select-Superpose Loop

    Masashi Nishimoto , Keiji Nishiyama , Hideyuki Kawabata , Tetsuo Hironaka

    … This paper proposes a new approach for developing application programs based on APIs in a simple way: through code development by iterating a Search-Select-Superpose (SSS) loop. … The search results are shown to the user as a list of outlines (sets of words) attached to code skeletons. … A code skeleton, chosen in the Select phase, is then merged with the program at hand in the Superpose phase. …

    情報処理学会論文誌 60(3), 2019-03-15

    IPSJ

  • An extraction of ICD10 code by calculation of vector of words with neural network  [in Japanese]

    辻岡 和孝 , 渡邊 翔太 , 片口 治幸 , 中川 肇

    診療情報管理 : 日本診療情報管理学会誌 30(4), 70-72, 2019-03

  • Preparation and thermal optimization of the proton-implanted high-gain Nd

    Chen Jing-Yi , Wang Yi , Wang Zhi-Ming , Zhang Liao-Lin , Guo Hai-Tao , Liu Chun-Xiao

    … In this work, the high-gain Nd<sup>3+</sup>-doped laser glass was chosen as the target material, and the optical waveguide was formed on the glass by the H<sup>+</sup>ion implantation under the conditions of a 8.0 × 10<sup>16</sup>-ions cm<sup>−2</sup>fluence and a 0.4 MeV energy. … The interaction mechanism of implanted protons with the high-gain Nd<sup>3+</sup>-doped laser glass was discussed by the SRIM 2013 code. …

    Jpn. J. Appl. Phys. 58(3), 032002, 2019-02-04

    JSAP

  • Hybrid QAM-based labels Generated by Two Multi-level PSK Codes

    KODAMA Takahiro , CINCOTTI Gabriella

    … The combined simultaneous use of optical and electrical encoding increases system flexibility and code orthogonality, as well as code recognition performance. …

    IEICE Transactions on Communications, 2019

    J-STAGE

  • Optimum Temperature for HIP Bonding Invar Alloy and Stainless Steel

    Wakui Takashi , Ishii Hideaki , Naoe Takashi , Kogawa Hiroyuki , Haga Katsuhiro , Wakai Eiichi , Takada Hiroshi , Futakawa Masatoshi

    … The tensile strength of a specimen bonded at 1200°C was approximately 10% lower than that of the Invar bulk. … From the residual stress analysis using the ABAQUS code, the tensile stress near the bonding region of the specimen bonded at 700°C was found to be 84 MPa; …

    MATERIALS TRANSACTIONS 60(6), 1026-1033, 2019

    J-STAGE

  • Neutronics Analyses for Shield Upgrading of the Compact Neutral Particle Analyzer for LHD Deuterium Plasma Experiments

    NISHITANI Takeo , OZAKI Tetsuo , SAITO Kenji , KAMIO Shuji , OGAWA Kunihiro , ISOBE Mitsutaka , OSAKABE Masaki

    … However, neutron induced noises could not be ignored in plasmas with the neutron emission rate higher than ∼1 × 10<sup>14 </sup>n/s. … We carried out the detailed neutronics analyses for the original neutron shield by using the MCNP6 code, which takes into account the detailed structure. …

    Plasma and Fusion Research 14(0), 3405048-3405048, 2019

    J-STAGE

  • Analysis of Ar Impurity Transport in the Large Tandem Mirror Device GAMMA 10/PDX Plasmas

    TAKECHI Sayuri , TATSUMI Ryoko , ISLAM Md. Shahinul , HOSHINO Kazuo , HATAYAMA Akiyoshi , NAKASHIMA Yousuke

    … <p>The purpose of this study is to understand the Ar impurity transport process in the GAMMA 10/PDX. … In the present study, the initial simulation using LINDA code and IMPGYRO code has been done to establish the basis of further understanding of the Ar impurity transport. … The robust basis for further model validation and understanding of the Ar transport in the GAMMA 10/PDX has been established.</p> …

    Plasma and Fusion Research 14(0), 2403045-2403045, 2019

    J-STAGE

  • Code Development for Calculating Electron Beams in the Cavities of the Future High-Power Gyrotrons

    NUMAKURA Tomoharu , KARIYA Tsuyoshi , MINAMI Ryutaro , OKADA Maki , HOJO Toshitaka , MOTOYOSHI Fumiya , IMAI Tsuyoshi

    … <p>This study develops a computational code for evaluating the operations of high-power gyrotrons with high-current electron beams. … The effects of fluctuations of the intense electron flows in nonuniform magnetic fields are studied in a 1 MW gyrotron for electron cyclotron resonance plasma heating and current drive in large devices, such as the tandem mirror plasma device GAMMA10/PDX and the Large Helical Device (LHD). …

    Plasma and Fusion Research 14(0), 2405052-2405052, 2019

    J-STAGE

  • Analysis of IgM-K type monoclonal gammopathy case whose IgM was estimated falsely without error notification by a turbidimetric immunoassay system: Second case of false IgM low value without error code  [in Japanese]

    IMOTO Mayumi , MAEDA Yasuhiro , YAMAGUCHI Toshihiro , NAKAE Kenichi , KAMISAKO Toshinori , YAMADA Toshiyuki

    … 整合性を確認したところ,原倍で420 mg/dLに対し,5倍で1,890 mg/dL,10倍で2,180 mg/dL,20倍で2,660 mg/dLであった。 … 反応曲線を確認すると原倍から10倍希釈まで第一反応において濁りの影響があることが判明した。 …

    Japanese Journal of Medical Technology 68(2), 401-405, 2019

    J-STAGE

  • Optimum Temperature for HIP Bonding Invar Alloy and Stainless Steel

    Wakui Takashi , Ishii Hideaki , Naoe Takashi , Kogawa Hiroyuki , Haga Katsuhiro , Wakai Eiichi , Takada Hiroshi , Futakawa Masatoshi

    … The tensile strength of a specimen bonded at 1200°C was approximately 10% lower than that of the Invar bulk. … From the residual stress analysis using the ABAQUS code, the tensile stress near the bonding region of the specimen bonded at 700°C was found to be 84 MPa; …

    MATERIALS TRANSACTIONS, 2019

    J-STAGE

  • Sensitivity Check of Background Plasma Parameter during SMBI in the GAMMA 10 Central-Cell by 3-D Monte-Carlo Simulations

    ISLAM Md. Maidul , KOBAYASHI Shinji , NISHINO Nobuhiro , ISLAM Md. Shahinul , IIJIMA Takaaki , YOSHIKAWA Masayuki , KOHAGURA Junko , SHOJI Mamoru , NAKASHIMA Yousuke

    … <p>The gas fueling by supersonic molecular beam injection (SMBI) has been carried out in the world largest tandem mirror device GAMMA 10 and higher plasma density has been achieved compared with conventional gas-puffing. … Three-dimensional Monte-Carlo code DEGAS is applied to GAMMA 10 and the spatial distribution of neutral particle density during SMBI is investigated. …

    Plasma and Fusion Research 14(0), 2403017-2403017, 2019

    J-STAGE

  • Development and Validation of a Tsunami Numerical Model with the Polygonally Nested Grid System and its MPI-Parallelization for Real-Time Tsunami Inundation Forecast on a Regional Scale

    Inoue Takuya , Abe Takashi , Koshimura Shunichi , Musa Akihiro , Murashima Yoichi , Kobayashi Hiroaki

    … The model is based on the world-renowned TUNAMI code solving the two-dimensional nonlinear shallow water equations, and enables one-stop simulation of the initial tsunami distribution based on a fault model, tsunami propagation and inundation, and damage estimation. … The results show that it requires only 128 cores of the SX-ACE for implementing six-hour tsunami inundation simulation with a 10-meter grid resolution within 10 minutes for the 700 km long coastline of Kochi Prefecture, Japan. …

    Journal of Disaster Research 14(3), 416-434, 2019

    J-STAGE

  • Spectroscopic Measurement of Air Plasma Flow Generated by 10kW Class ICP Heater  [in Japanese]

    Tanaka Mayuko , Yamada Kazuhiko , Takahashi Yusuke , Yu Minghao , Tezuka Asei

    … <p>10kW class Inductively Coupled Plasma (ICP) heater in JAXA/ISAS was developed to evaluate heating-durability of membrane materials for inflatable reentry aeroshell. … Moreover, molecular temperatures were estimated based on the spectra data by a spectrum fitting method using a radiation analysis code. …

    JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 67(2), 42-48, 2019

    J-STAGE

  • Analyzing Impacts of SRAM, FF and Combinational Circuit on Chip-Level Neutron-Induced Soft Error Rate

    LIAO Wang , HASHIMOTO Masanori

    … Using the SBU and MCU data in SRAMs from previous work, we calculated the MBU rate with/without error correcting code (ECC) and with 1/2/4-col MUX interleaving. … For both the processors, without ECC, 95% errors occur at SRAM in both SOTB and bulk chips at 0.5 V and 1.0 V, and the overall chip-level SERs of the assumed SOTB chip at 0.5 V is at least 10 x lower than that of bulk chip. …

    IEICE Transactions on Electronics E102.C(4), 296-302, 2019

    J-STAGE

  • High-Frequency and Integrated Design Based on Flip-Chip Interconnection Technique (Hi-FIT) for High-Speed (>100 Gbaud) Optical Devices

    KANAZAWA Shigeru , ARARATAKE Atsushi , YAMAZAKI Hiroshi , UEDA Yuta , KOBAYASHI Wataru , OGISO Yoshihiro , OZAKI Johsuke , SHINDO Takahiko , TSUNASHIMA Satoshi , TANOBE Hiromasa

    … And with a 4-intensity-level pulse amplitude modulation (PAM) operation at 107 Gbaud, we obtained a bit-error rate (BER) of less than 3.8×10<sup>-3</sup>, which is an error-free condition, by using a 7%-overhead (OH) hard-decision forward error correction (HD-FEC) code, even after a 10-km SMF transmission. …

    IEICE Transactions on Electronics E102.C(4), 340-346, 2019

    J-STAGE

  • Near-Field Chipless RFID Tag System Using Inductive Coupling Between a Multimode Resonator and Detection Probes

    SAKAI Fuminori , MAKIMOTO Mitsuo , WADA Koji

    … In particular, the spacing between the tag resonator and the transmission line of the probe, which corresponds to the detection distance, was 5mm or more, and was at least 10 times greater than that of previously reported RFID tag systems using near-field electromagnetic coupling.</p> …

    IEICE Transactions on Communications E102.B(4), 722-731, 2019

    J-STAGE

  • Expanded Precoding Index Modulation for MIMO System

    NIN Yasunori , SANADA Yukitoshi , KIMURA Ryota , MATSUDA Hiroki , SAWAI Ryo

    … As a result, a code rate can be reduced compared to that of the conventional PIM and the number of candidate constellation points for demodulation can be decreased as compared to that of a multiple-input multiple-output MIMO system under the same throughput. … Numerical results obtained through computer simulation show that the proposed PIM with QPSK symbols improves the performance by about 2.5dB at a bit error rate of 10<sup>-3</sup> …

    IEICE Transactions on Communications E102.B(4), 921-929, 2019

    J-STAGE

  • A Full Wave Simulation on the Density Dependence of a Slow Wave Excitation in the GAMMA 10/PDX Central Cell with TASK/WF3D

    IKEZOE Ryuya , KAYANO Hiroki , SHIMA Yoriko , KOHAGURA Junko , YOSHIKAWA Masayuki , SAKAMOTO Mizuki , NAKASHIMA Yousuke , FUKUYAMA Atsushi , KUBOTA Yushi , ICHIMURA Makoto , HIRATA Mafumi , SUMIDA Shuhei , JANG Seowon , IZUMI Koki , TANAKA Atsuto , SEKINE Ryo

    … To clarify its availability, the density dependence of a slow wave excitation is investigated using a full wave simulation with TASK/WF3D code in the GAMMA 10/PDX central cell configuration, where there is an extensive track record of a beach heating. …

    Plasma and Fusion Research 14(0), 2402003-2402003, 2019

    J-STAGE

  • Investigation of ICRF Heating Efficiency in Plug/Barrier Cell on GAMMA 10/PDX with a Full-Wave Code

    KUBOTA Yushi , SEKINE Ryo , KAYANO Hiroki , NAKASHIMA Yousuke , FUKUYAMA Atsushi , HIRATA Mafumi , JANG Seowon , ICHIMURA Makoto , IKEZOE Ryuya , SAKAMOTO Mizuki , SUMIDA Shuhei , TANAKA Atsuto , IZUMI Koki

    … <p>In the west end of GAMMA 10/PDX, the end-loss ion flux is utilized for divertor simulation experiments. …

    Plasma and Fusion Research 14(0), 2401012-2401012, 2019

    J-STAGE

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