检索结果-内蒙古大学图书馆

In-cell NMR in Eukaryotic Cells – I (Introduction from Outside of Cells)

学校读者我要写书评

暂无评论

New Developments in NMR

New Developments in NMR 2020年第21期2020-January卷 27-44页

作者： Inomata, Kohsuke Kigawa, Takanori Shirakawa, Masahiro RIKEN Center for Biosystems Dynamics Research 1-7-22 Suehiro-cho Tsurumi-ku Yokohama230-0045 Japan Department of Computer Science School of Computing Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama Kanagawa226-8503 Japan Department of Molecular Engineering Graduate School of Engineering Kyoto University Kyoto-Daigaku Katsura Nishikyo-Ku Kyoto615-8510 Japan

State conversion and resource measures in general quantum resource theories

学校读者我要写书评

暂无评论

arXiv 2020年

作者： Kuroiwa, Kohdai Yamasaki, Hayata Institute for Quantum Computing Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada Department of Applied Physics Graduate School of Engineering University of Tokyo 7–3–1 Hongo Bunkyo-ku Tokyo113–8656 Japan Photon Science Center Graduate School of Engineering University of Tokyo 7–3–1 Hongo Bunkyo-kuTokyo113–8656 Japan

Quantum resource theories (QRTs) provide a unified theoretical framework for understanding inherent quantum-mechanical properties that serve as resources in quantum information processing, but resources motivated by physics may possess intractable mathematical structure to analyze, such as non-uniqueness of maximally resourceful states, lack of convexity, and infinite dimension. We investigate state conversion and resource measures in general QRTs under minimal assumptions to figure out universal properties of physically motivated quantum resources that may have such intractable mathematical structure. In the general setting, we prove the existence of maximally resourceful states in one-shot state conversion. Also analyzing asymptotic state conversion, we discover catalytic replication of quantum resources, where a resource state is infinitely replicable by free operations. In QRTs without assuming uniqueness of maximally resourceful states, we formulate the tasks of distillation and formation of quantum resources, and introduce distillable resource and resource cost based on the distillation and the formation, respectively. Furthermore, we introduce consistent resource measures that quantify the amount of quantum resources without contradicting the rate of state conversion even in QRTs with non-unique maximally resourceful states. Progressing beyond the previous work showing a uniqueness theorem for additive resource measures, we prove the corresponding uniqueness inequality for the consistent resource measures;that is, consistent resource measures of a quantum state take values between the distillable resource and the resource cost of the state. These formulations and results establish a foundation of QRTs applicable to mathematically intractable but physically motivated quantum resources in a unified way. Copyright © 2020, The Authors. All rights reserved.

关键词： Distillation

Sampling-based quasiprobability simulation for fault-tolerant quantum error correction on the surface codes under coherent noise

学校读者我要写书评

暂无评论

arXiv 2021年

作者： Hakkaku, Shigeo Mitarai, Kosuke Fujii, Keisuke Graduate School of Engineering Science Osaka University 1-3 Machikaneyama Osaka Toyonaka560-8531 Japan Center for Quantum Information and Quantum Biology Osaka University 1-2 Machikaneyama Toyonaka560-0043 Japan JST PRESTO 4-1-8 Honcho Saitama Kawaguchi332-0012 Japan Hirosawa 2-1 Saitama Wako351-0198 Japan Fujitsu Quantum Computing Joint Research Division QIQB Osaka University 1-2 Machikaneyama Toyonaka560-0043 Japan

We propose a sampling-based simulation for fault-tolerant quantum error correction under coherent noise. A mixture of incoherent and coherent noise, possibly due to over-rotation, is decomposed into Clifford channels with a quasiprobability distribution. Then, an unbiased estimator of the logical error probability is constructed by sampling Clifford channels with an appropriate postprocessing. We characterize the sampling cost via the channel robustness and find that the proposed sampling-based method is feasible even for planar surface codes with relatively large code distances intractable for full state-vector simulations. As a demonstration, we simulate repetitive faulty syndrome measurements on the planar surface code of distance 5 with 81 qubits. We find that the coherent error increases the logical error rate. This is a practical application of the quasiprobability simulation for a meaningful task and would be useful to explore experimental quantum error correction on the near-term quantum devices. Copyright © 2021, The Authors. All rights reserved.

关键词： Fault tolerance

Achieve efficient position-heap-based privacy-preserving substring-of-keyword query over cloud

学校读者我要写书评

暂无评论

arXiv 2021年

作者： Yin, Fan Lu, Rongxing Zheng, Yandong Shao, Jun Yang, Xue Tang, Xiaohu Information Security and National Computing Grid Laboratory Southwest Jiaotong University Chengdu611756 China Canadian Institute for Cybersecurity Faculty of Computer Science University of New Brunswick FrederictonE3B 5A3 Canada School of Computer and Information Engineering Zhejiang Gongshang University Hangzhou310018 China Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen518055 China PCL Research Center of Networks and Communications Peng Cheng Laboratory Shenzhen518055 China

The cloud computing technique, which was initially used to mitigate the explosive growth of data, has been required to take both data privacy and users’ query functionality into consideration. Symmetric searchable encryption (SSE) is a popular solution to supporting efficient keyword queries over encrypted data in the cloud. However, most of the existing SSE schemes focus on the exact keyword query and cannot work well when the user only remembers the substring of a keyword, i.e., substring-of-keyword query. This paper aims to investigate this issue by proposing an efficient and privacy-preserving substring-of-keyword query scheme over cloud. First, we employ the position heap technique to design a novel tree-based index to match substrings with corresponding keywords. Based on the tree-based index, we introduce our substring-of-keyword query scheme, which contains two consecutive phases. The first phase queries the keywords that match a given substring, and the second phase queries the files that match a keyword in which people are really interested. In addition, detailed security analysis and experimental results demonstrate the security and efficiency of our proposed scheme. Copyright © 2021, The Authors. All rights reserved.

关键词： Efficiency

Robot Hand Interaction Using Plastic Deformation Control with Inner Position Loop

学校读者我要写书评

暂无评论

Robot Hand Interaction Using Plastic Deformation Control wit...

IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Kenichi Murakami Koki Ishimoto Taku Senoo Masatoshi Ishikawa Data Science Research Division Information Technology Center The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan Department of Information Physics and Computing The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan Electrical Systems and Control Engineering Program Graduate School of Advanced Science and Engineering Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima City Hiroshima Japan

ISBN: (数字)9781728167947

ISBN: (纸本)9781728167954

In this study, the inner position loop addition for plastic deformation control of the error robustness of the model and actual parameters is proposed. The inner position loop is a type of position feedback control based on the estimation of model parameters and dynamics of robots. This position control system with proportional and derivative gains modifies the trajectory of the end effector close to the desired trajectory. The robustness of the proposed control scheme is evaluated by comparing it with plastic deformation control without an inner position loop in both simulation and actual environments. Finally, the stable reaction with the proposed control is demonstrated for the case where a human pushes the robot finger.

关键词： Strain Plastics Force Deformable models Robots Friction Trajectory

Quantification electroencephalography response to procedural pain during heel puncture in preterm infants

学校读者我要写书评

暂无评论

Physiological measurement 2025年第6期46卷 2025 Jun 2页

作者： Nusreena Hohsoh Osuke Iwata Tomoko Suzuki Chinami Hanai Ming Huang Kiyoko Yokoyama Graduate School of Design and Architecture Nagoya City University 2-1-10 Kitachikusa Chikusa-ku Nagoya Aichi Prefecture 464-0083 JAPAN. Nagoya City University Graduate School of Medical Sciences and Medical School 1 Kawasumi Mizuho-cho Nizuho-ku Nagoya Aichi Prefecture 467-8601 JAPAN. Nagoya City University Graduate School of Medical Sciences and Medical School 1 Kawasumi Mizuho-cho Mizuho-ku Nagoya Aichi Prefecture 467-8601 JAPAN. Institute of Advanced Computing and Digital Engineering Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen Shenzhen Guangdong 518103 CHINA. School of Data Science Nagoya Shiritsu Daigaku 2-1-10 Kitachikusa. Chikusa-ku Nagoya 464-0083 JAPAN.

OBJECTIVE:Pain assessment in preterm infants is often based on subjective observations, which may lack objectivity and are labor-intensive. Non-invasive EEG can serve as an objective assessment tool. However, no specific EEG feature within a particular frequency band and brain region has been reported for pain detection in the objective pain assessment of preterm infants. This study quantified electroencephalography (EEG) responses to procedural pain during a puncture in preterm infants, specifically analyzing three EEG parameters. APPROACH:Fifty-seven EEG datasets from forty-two preterm infants were analyzed across eight EEG channels. The differences between the upper and lower margins (UM-LM) of amplitude-integrated EEG (aEEG), as well as the five frequency bands (low delta, high delta, theta, alpha, and beta) of frequency power and time-frequency power, were used to characterize the response of the brain to pain during specific periods: before, during, and after the puncture. MAIN RESULTS:The Fp1 and Fp2 exhibited the most significant differences in the UM-LM aEEG differences between before vs. during (Fp1: p = 0.0060, Fp2: p = 0.0031), before vs. after (p < 0.0001), and during vs. after (Fp1: p = 0.0427, Fp2: p = 0.025) the puncture. The C3 and C4 responded significantly to pain during the puncture in the frequency and time-frequency power, notably the time-frequency power in the low delta, which showed the most significant differences between the periods before vs. during (p < 0.0001), before vs. after (p < 0.0001), and during vs. after (p < 0.0002) the puncture. SIGNIFICANCE:The central brain region responds significantly to procedural pain in preterm infants, which is prominently detected in the low delta of time-frequency power. These findings support the use of EEG application as an objective and non-invasive method to identify and detect pain in nonverbal populations, focusing on specific critical channels and frequency bands.

关键词： Brain activity EEG analysis Heel puncture Preterm newborns Procedural pain

The ACROBAT 2022 challenge: Automatic registration of breast cancer tissue

学校读者我要写书评

暂无评论

Medical Image Analysis 2024年 97卷 103257页

作者： Weitz, Philippe Valkonen, Masi Solorzano, Leslie Carr, Circe Kartasalo, Kimmo Boissin, Constance Koivukoski, Sonja Kuusela, Aino Rasic, Dusan Feng, Yanbo Pouplier, Sandra Sinius Sharma, Abhinav Eriksson, Kajsa Ledesma Robertson, Stephanie Marzahl, Christian Gatenbee, Chandler D. Anderson, Alexander R.A. Wodzinski, Marek Jurgas, Artur Marini, Niccolò Atzori, Manfredo Müller, Henning Budelmann, Daniel Weiss, Nick Heldmann, Stefan Lotz, Johannes Wolterink, Jelmer M. De Santi, Bruno Patil, Abhijeet Sethi, Amit Kondo, Satoshi Kasai, Satoshi Hirasawa, Kousuke Farrokh, Mahtab Kumar, Neeraj Greiner, Russell Latonen, Leena Laenkholm, Anne-Vibeke Hartman, Johan Ruusuvuori, Pekka Rantalainen, Mattias Department of Medical Epidemiology and Biostatistics Karolinska Insitutet Stockholm Sweden Institute of Biomedicine University of Turku Turku Finland Institute of Biomedicine University of Eastern Finland Kuopio Finland Department of Surgical Pathology Zealand University Hospital Roskilde Denmark Department of Oncology and Pathology Karolinska Institutet Stockholm Sweden Gestalt Diagnostics Spokane United States Department of Integrated Mathematical Oncology Moffitt Cancer Center Tampa United States Informatics Institute University of Applied Sciences Western Switzerland Switzerland Department of Measurement and Electronics AGH University of Kraków Poland Department of Computer Science University of Geneva Geneva Switzerland Department of Neuroscience University of Padova Italy Medical Faculty University of Geneva Switzerland Fraunhofer Institute for Digital Medicine MEVIS Lübeck Germany Department of Applied Mathematics Technical Medical Centre University of Twente Enschede Netherlands Multimodality Medical Imaging Technical Medical Centre University of Twente Enschede Netherlands Department of Electrical Engineering Indian Institute of Technology Bombay India Graduate School of Engineering Muroran Institute of Technology Hokkaido Japan Faculty of Medical Technology Niigata University of Health and Welfare Niigata Japan FORXAI Business Operations Konica Minolta Inc. Osaka Japan Department of Computing Science University of Alberta EdmontonAlberta United States Alberta Machine Intelligence Institute Edmonton Canada MedTechLabs BioClinicum Karolinska University Hospital Stockholm Sweden Faculty of Medicine and Health Technology Tampere University Tampere Finland

The alignment of tissue between histopathological whole-slide-images (WSI) is crucial for research and clinical applications. Advances in computing, deep learning, and availability of large WSI datasets have revolutionised WSI analysis. Therefore, the current state-of-the-art in WSI registration is unclear. To address this, we conducted the ACROBAT challenge, based on the largest WSI registration dataset to date, including 4,212 WSIs from 1,152 breast cancer patients. The challenge objective was to align WSIs of tissue that was stained with routine diagnostic immunohistochemistry to its H&E-stained counterpart. We compare the performance of eight WSI registration algorithms, including an investigation of the impact of different WSI properties and clinical covariates. We find that conceptually distinct WSI registration methods can lead to highly accurate registration performances and identify covariates that impact performances across methods. These results provide a comparison of the performance of current WSI registration methods and guide researchers in selecting and developing methods. © 2024

关键词： Tissue

DISTINCT CHANGES OF SYNAPSE, TRANSCRIPTOMES, AND POST-TRANSLATIONAL MODIFICATIONS IN MICE BRAIN UPON HUMAN BLOOD BETWEEN APOE4 CARRIERS AND NON-CARRIERS.

学校读者我要写书评

暂无评论

IBRO Neuroscience Reports 2023年 15卷 S385-S386页

作者： Lynkyung Choi Wangyong Shin Seungmi Kim Hyunji Kim Dayoung Seo Seungjoon Lee Hyojin Kang Jae-Hong Lee Sungyang Jo Seungjoo Lee Seung-Yong Yoon Eun-Jae Lee Eunjoon Kim KAIST Graduate School Of Medical Science And Engineering Daejeon Korea Republic of Institute for Basic Science Center For Synaptic Brain Dysfunctions daejeon Korea Republic of Asan Institute for Life Science Asan Medical Center Translational Biomedical Research Group seoul Korea Republic of Asan Medical Center Univ of Ulsan Dept Of Neurology seoul Korea Republic of Korea Institute of Science and Technology Information(KISTI) Center For Applied Scientific Computing daejeon Korea Republic of Asan Medical Center Univ of Ulsan Dept Of Neurosurgery seoul Korea Republic of Asan Medical Center Neurology seoul Korea Republic of Institute for Basic Science Center For Synaptic Brain Dysfunctions Daejeon Korea Republic of Korea Advanced Institute of Science and Technology Biological Sciences Daejon Korea Republic of

Quantum tangent kernel

学校读者我要写书评

暂无评论

arXiv 2021年

作者： Shirai, Norihito Kubo, Kenji Mitarai, Kosuke Fujii, Keisuke Graduate School of Engineering Science Osaka University 1-3 Machikaneyama Osaka Toyonaka560-8531 Japan R4D Mercari Inc. Roppongi Hills Mori Tower 18F 6-10-1 Roppongi Minato-ku Tokyo106-6118 Japan Center for Quantum Information and Quantum Biology Osaka University Japan JST PRESTO 4-1-8 Honcho Saitama Kawaguchi332-0012 Japan RIKEN Center for Quantum Computing Saitama Wako351-0198 Japan

Quantum kernel method is one of the key approaches to quantum machine learning, which has the advantages that it does not require optimization and has theoretical simplicity. By virtue of these properties, several experimental demonstrations and discussions of the potential advantages have been developed so far. However, as is the case in classical machine learning, not all quantum machine learning models could be regarded as kernel methods. In this work, we explore a quantum machine learning model with a deep parameterized quantum circuit and aim to go beyond the conventional quantum kernel method. In this case, the representation power and performance are expected to be enhanced, while the training process might be a bottleneck because of the barren plateaus issue. However, we find that parameters of a deep enough quantum circuit do not move much from its initial values during training, allowing first-order expansion with respect to the parameters. This behavior is similar to the neural tangent kernel in the classical literatures, and such a deep variational quantum machine learning can be described by another emergent kernel, quantum tangent kernel. Numerical simulations show that the proposed quantum tangent kernel outperforms the conventional quantum kernel method for an ansatz-generated dataset. This work provides a new direction beyond the conventional quantum kernel method and explores potential power of quantum machine learning with deep parameterized quantum circuits. Copyright © 2021, The Authors. All rights reserved.

关键词： Numerical methods