Search Results 1-20 of 521

  • Decomposition of a set of distributions in extended exponential family form for distinguishing multiple oligo-dimensional marker expression profiles of single-cell populations and visualizing their dynamics

    Okada Daigo , Yamada Ryo

    細胞集団の複雑な分布変化を可視化する統計手法を開発 --低次元空間上でフローサイトメトリーの時系列動画も再現--. 京都大学プレスリリース. 2020-04-15.

    PLOS ONE 15(4), 2020-04-10

    IR 

  • A Charge Recycling Stacked I/O in Standard CMOS Technology for Wide TSV Data Bus

    Yoshikawa Takefumi , Iwata Tatsuya , Shibazaki Junji , Muroga Sho , Ikeda Hiroaki

    … This theoretical approach is based on probability calculation for data stream on pure random pattern. … Simulation results show that the proposed 2 story data bus architectures of 64bits (32×2) and 128bits (64×2) achieve competitive power efficiency (0.160 pJ/bit) with smaller size (44% to prior work) and normal operation voltage (1 V). …

    IEICE Electronics Express, 2020

    J-STAGE 

  • Evaluation of Phenomena Preceding Earthquakes and Earthquake Predictability

    Nakatani Masao

    … However, the accumulation of data over time allows for statistical evaluation to determine whether there is a correlation between the occurrence of a certain type of phenomena prior to an earthquake. … The magnitude of the earthquake-preceding tendency can be universally measured by the probability gain <i>G</i>, which is the enhancement ratio of earthquake probability suggested by the occurrence of the phenomenon. …

    Journal of Disaster Research 15(2), 112-143, 2020

    J-STAGE 

  • Interference Management Using Beamforming Techniques For Line-Of-Sight Femtocell Networks

    MOHAMED Khalid S. , ALIAS Mohamad Y. , ROSLEE Mardeni

    Prior to that, the affected users are switched to the femtocells that provide better throughput levels to avoid increasing the outage probability. … Relative to fixed and adaptive power control schemes, the proposed scheme achieves approximately 5% spectral efficiency (SE) improvement, about 10% outage probability reduction, and about 7% Mbps average user throughput improvement.</p> …

    IEICE Transactions on Communications, 2020

    J-STAGE 

  • UMMS: Efficient Superpixel Segmentation Driven by a Mixture of Spatially Constrained Uniform Distribution

    WANG Pengyu , ZHU Hongqing , CHEN Ning

    … Specifically, the invariant prior probability and parameter range restrict the locality of superpixels, and the robust mean optimization technique ensures the accuracy of superpixel boundaries. …

    IEICE Transactions on Information and Systems E103.D(1), 181-185, 2020

    J-STAGE 

  • Optimum Parameter Estimation of Tone Mapping Operators by Natural Image Statistics

    Okazaki Daiki , Hara Kenji , Inoue Kohei , Urahama Kiichi

    … In this paper, we propose a method that optimizes the parameters of tone mapping operators by compressing the dynamic range of HDR images using natural image statistics.First, a prior probability model of a natural image is constructed for color natural images based on a generalized Gaussian distribution.Then, an LDR image is generated by converting the HDR image using the tone mapping operator. …

    Journal of the Institute of Industrial Applications Engineers 7(3), 106-109, 2019-07-26

    IR 

  • Statistical mechanical evaluation of a spread-spectrum watermarking model with image restoration

    Kawamura Masaki , Hayashi Kao , Uezu Tatsuya , Okada Masato , Uezu Tatsuya , Okada Masato , Okada Masato

    … We therefore need to assume some prior probabilities. … The probability for estimating the messages is given by the uniform distribution, and the ones for the image are given by the infinite-range model and two-dimensional (2D) Ising model. … We can obtain the estimated messages and image by maximizing the posterior probability. … For this purpose, we assumed that the image is binary and is generated from a given prior probability. …

    Physical Review E (99), 062132, 2019-06-26

    IR 

  • Accurate OD Traffic Matrix Estimation Based on Resampling of Observed Flow Data

    Kase Simon , Tsuru Masato , Uchida Masato

    … In order to solve the OD traffic matrix estimation problem, the prior method uses an inverse function mapping from the probability distributions of the traffic rate of aggregated-flows to those of individual-flows. …

    2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), 1574-1579, 2019-05-07

    IR 

  • Necessity and Sufficiency in Causal Structure Learning  [in Japanese]

    Saito Motoyuki

    …  Recent studies on causal learning have shown that people use covariation information to infer casual structure, and that people have prior assumptions about causal structure and causal strength. … The purpose of the present study is to investigate prior assumptions in inferring preventive causal structure. …

    Cognitive Studies: Bulletin of the Japanese Cognitive Science Society 26(3), 357-365, 2019

    J-STAGE 

  • Clinical trial design for rare cancer  [in Japanese]

    Teramukai Satoshi

    <p>近年,小児がんなどの希少がんに対する臨床試験のあり方は我が国の規制当局を含めて国際的なトピックスとなっている.試験デザインの制約を緩和できる条件や状況として,1)単群試験デザインの許容,2)奏効率等の代替評価項目の採用,3)第I種・第II種の過誤確率の上昇などが挙げられている.また,効率的なデザインとして,遺伝子情報に基づいた試験(アンブレラ試験またはバスケット試験),N-of- …

    The Japanese Journal of Pediatric Hematology / Oncology 56(5), 425-428, 2019

    J-STAGE 

  • INVERSE UNCERTAINTY QUANTIFICATION OF CTF PHYSICAL MODEL PARAMETERS USING BAYESIAN INFERENCE

    Liu Junhong , Huang Shanfang , Guo Xiaoyu , Wang Jiageng , Wang Kan

    … In this study, the OECD/NRC BWR Full-size Fine-Mesh Bundle Tests (BFBT) benchmark steady-state void fraction data is used as the prior knowledge and Bayesian inference is implemented to formulate the IUQ problem. … Two Markov Chain Monte Carlo (MCMC) sampling techniques, the adaptive Metropolis-Hasting with global scaling algorithm and the adaptive Metropolis-Hasting with component-wise scaling algorithm, are implemented and investigated to explore the posterior probability density functions. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1435, 2019

    J-STAGE 

  • Online machine learning for hearing-dog robot to search for user with considering user's life rhythm  [in Japanese]

    Furuta Shotaro , Nakamura Tsuyoshi , Iwahori Yuji , Kanoh Masayoshi , Yamada Koji , Fukui Shinji

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    Proceedings of the Fuzzy System Symposium 35(0), 250-255, 2019

    J-STAGE 

  • Utility of Hemodilutional Autologous Blood Transfusion to Avoid Allogeneic Blood-related Adverse Effects  [in Japanese]

    KITAYAMA Masato , SAITO Junichi , HIROTA Kazuyoshi

    <p>自己血輸血は同種血輸血に伴う感染症・免疫性副作用を回避しうる最も良質な輸血療法である.希釈式自己血輸血(hemodilutional autologous blood transfusion;以下HAT)は貯血式や回収式に比べ術前の準備を要さず血小板・凝固機能が維持され,悪性腫瘍・感染症例でも施行可能な利点を有し,さらに3つの方法を組み合わせることにより輸血回避の幅が増加する.当 …

    THE JOURNAL OF JAPAN SOCIETY FOR CLINICAL ANESTHESIA 39(5), 555-562, 2019

    J-STAGE  Ichushi Web 

  • Particle Filter without a Prior Information for Probability Distribution  [in Japanese]

    Kaneda Yasuaki , Irizuki Yasuharu

    … These estimation methods need to know probability density functions of dynamical systems. … However, the probability density functions and a prior information of noise in particular are rarely known in practice. …

    Transactions of the Institute of Systems, Control and Information Engineers 32(4), 159-167, 2019

    J-STAGE 

  • Risk-Stratified Incidence of Renal Replacement Therapy Initiation: A Longitudinal Analysis Using Medical Claims and Health Checkup Data

    Sugiyama Takehiro , Oba Koji , Kobayashi Yasuki

    … We estimated the incidence of RRT initiation by the subject characteristics, followed by investigation for risk factors in bivariate analyses and multivariable regression analyses with Bayesian prior probability distributions. …

    The Tohoku Journal of Experimental Medicine 248(2), 125-135, 2019

    J-STAGE  Ichushi Web 

  • Developing a clinical prediction rule to identify patients with lumbar disc herniation who demonstrate short-term improvement with mechanical lumbar traction

    HIRAYAMA Kazuya , TSUSHIMA Eiki , ARIHARA Hiroki , OMI Yoichi

    … The initial evaluation was performed prior to the initiation of treatment. … For the patients with at least three of the five predictors, the probability of their ODI greatly improving increased from 23.3% to 48.7% compared with the patients without these predictors (positive likelihood ratio, 3.13). …

    Physical Therapy Research 22(1), 9-16, 2019

    J-STAGE 

  • Approximate Bayesian Estimation Based on Fuzzy Interval Data from Multi-Dimensional Normal Distribution  [in Japanese]

    YOSHIKAWA Shin-ichi

    <p>最近の計算機技術や計測技術の発展・成熟の影響で,多次元データを取り扱う機会が増えている.多次元データ処理を主眼とする研究報告は多く,それらは多次元データの統計的解析の枠組みを構成することを目的としている.多次元データ処理を主眼とする統計的解析の方法論の構築は重要である.本論文では,多次元確率空間から得られるファジィ区間データに基づく近似的ベイズ推定の方法を提案する.ただし,提案す …

    Journal of Japan Society for Fuzzy Theory and Intelligent Informatics 31(2), 672-689, 2019

    J-STAGE 

  • A New Process of Thermoplastic Polypropylene Reinforced by Interlayered Activated Carbon Fiber Treated by Electron Beam Irradiation under Nitrogen Gas Atmosphere with Oxygen Prior to Assembly and Hot-Press

    Kitagawa Shodai , Kimura Hideki , Uchida Helmut T. , Faudree Michael C. , Tonegawa Akira , Kaneko Satoru , Salvia Michelle , Nishi Yoshitake

    … <p>A new process of internal activation of carbon fiber reinforced thermoplastic polymer (CFRTP) of polypropylene (PP) by applying electron beam irradiation (EBI) under oxygen (O<sub>2</sub>)–rich nitrogen gas (N<sub>2</sub>) atmosphere to CF chopped strand matt (CSM) layers prior to assembly and hot press to strengthen the typically weak CF/thermoplastic polymers (TPs) adhesion was proposed. …

    MATERIALS TRANSACTIONS 60(4), 587-592, 2019

    J-STAGE 

  • Adaptive Two-Step Bayesian Generalized Likelihood Ratio Test Algorithm for Low-Altitude Detection

    ZHOU Hao , HU Guoping , SHI Junpeng , XUE Bin

    … Then, aiming at the problem that the integrals are too complex to yield a closed-form Neyman-Pearson detector, we assume prior knowledge of the channel scattering coefficient and clutter to design an adaptive two-step Bayesian GLRT algorithm for low-altitude target detection. … With the TB-GLRT detector, the maximum detection probability can reach 70% when SNR=0dB and <i>ν</i>=1. …

    IEICE Transactions on Communications E102.B(3), 571-580, 2019

    J-STAGE 

  • ADVANCED METHOD OF SEISMIC VULNERABILITY FUNCTIONS OF WOODEN BUILDINGS IN CONSIDERATION OF REGIONAL CHARACTERISTIC AND CONSTRUCTION YEAR:-Based on the seismic index distribution of wooden houses in case of Hokkaido-  [in Japanese]

    TAKEUCHI Shinichi , OKADA Shigeyuki , NAKASHIMA Tadayoshi

    … With this method, it becomes possible to evaluate the earthquake resistance of buildings in the area by the probability density distribution of the seismic performance index. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (753), 1549-1559, 2018-11

    J-STAGE  AIJ 

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