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Deep learning-based sperm motility and morphology estimation on stacked color-coded MotionFlow

Informatics in Medicine Unlocked 2024年 45卷

作者： Adinugroho, Sigit Nakazawa, Atsushi Graduate School of Interdisciplinary Science and Engineering in Health Systems Okayama University 3-1-1 Tsushima-naka Kita-ku Okayama 700-8530 Japan Faculty of Computer Science Brawijaya University Jl. Veteran 8 Malang 65145 Indonesia

Motility and morphology are crucial factors in determining male fertility. The current gold standard defined by the World Health Organization (WHO) mandates that semen analysis be performed by trained technicians. Despite strict standardization and technical guidelines set by the WHO, variability in semen analysis results remains prevalent owing to human subjectivity. computer-Aided Sperm Analysis presents a further challenge because of its poor agreement with human analysis. This study aimed to enhance the accuracy of automated semen analysis by introducing a new method for expressing sperm motion and investigating advanced deep neural network architectures to estimate motility and morphology. Initially, we extracted motion information from the VISEM dataset using our novel motion representation technique called MotionFlow, along with shape information. Consequently, motility and morphology neural networks were constructed to exploit transfer learning in other fields to improve performance. These networks ingested motion and shape features and made separate predictions for motility and morphology. The evaluation process utilized a K-Fold cross-validation scheme to determine the mean absolute error (MAE) and maintain objectivity throughout the analysis. The proposed method achieved a greater level of performance than the current methods by attaining MAE of 6.842% and 4.148% for motility and morphology estimation, respectively. The improvement accomplished by this research may pave the way toward a fully automated human sperm quality assessment. © 2024 The Author(s)

关键词： MotionFlow Sperm analysis Sperm morphology Sperm motility

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A Study on High-Efficiency 24-GHz CMOS Voltage Control Oscillator

A Study on High-Efficiency 24-GHz CMOS Voltage Control Oscil...

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Asia-Pacific Conference on Microwave

作者： Yoshiki Hashimoto Nobuyuki Itoh Takayuki Morishita Kiyotaka Komoku Graduate School of Computer Science and Systems Engineering Okayama Prefectural University Soja Japan Okayama Prefectural University Soja Japan

In this paper, a high-efficiency CMOS voltage control oscillator (VCO) at 24 GHz is presented. It is found in this study that to enhance output power and power added efficiency of the transformer based inductive coupled VCO, high coupling coefficient and high quality factor of inductors are essential. To confirm them, we designed three transformers which have different coupling coefficient and different quality factor of inductors and fabricated to implement each of them to VCO. The measurement results showed the VCO using an inductor of "M6+M4+M3 vs. M5" which has a high quality factor of inductors exhibited the maximum output power. The measured output power of that VCO exhibited 16.2 dBm and PAE of 19.2% from 22.2 GHz oscillation frequency at =1.8 V and =1.8 V. The process technology used in this study is TSMC-180 nm CMOS.

关键词： Q-factor Phase noise Couplings Power measurement Voltage-controlled oscillators Transformers Frequency measurement

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Evaluation of preamble detection in etsi smartban phy 13th

Evaluation of preamble detection in etsi smartban phy

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13th EAI International Conference on Body Area Networks, BODYNETS 2018

作者： Takabayashi, Kento Tanaka, Hirokazu Sakakibara, Katsumi Department of Information and Communication Engineering Faculty of Computer Science and Systems Engineering Okayama Prefectural University Okayama Japan Graduate School of Information Sciences Hiroshima City University Hiroshima Japan

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Speech Recognition Approach for Motion-Enhanced Display in ARM-COMS System 22nd

Speech Recognition Approach for Motion-Enhanced Display in A...

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22nd International Conference on Human computer Interaction,HCII 2020

作者： Ito, Teruaki Oyama, Takashi Watanabe, Tomio Faculty of Computer Science and System Engineering Okayama Prefectural University 111 Kuboki SojaOkayama719-1197 Japan

ISBN: (纸本)9783030601164

This research proposes an idea of motion-enhanced display that utilizes the display itself as the communication media which mimics the motion of human head to enhance presence in remote communication. The idea has been implemented as an augmented tele-presence system called ARM-COMS (ARm-supported eMbodied COm-munication Monitor System). Basically, ARM-COMS detects the orientation of a subject face by the face-detection tool based on an image processing technique, and mimics the head motion of a remote partner in an effective manner. In addition to that, ARM-COMS makes appropriate reactions when a communication partner speaks even without any significant motion in video communication by using audio signal during talk. This paper covers two topics. The first one is a new design of the ARM-COMS robotic arm, with the configuration of six-axis servo motors to enable further smooth motion. In addition to the hardware configuration, the software configuration is also presented based on the ROS framework. The second topic is a camera stabilizer-based experimental configuration. This study worked on a feasibility study of experimental configuration of ARM-COMS. If it works feasible, the approach could be applied to the redesigned ARM-COMS robotic arm system. © 2020, Springer Nature Switzerland AG.

关键词： Speech recognition

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A nonlinear control model of musculoskeletal systems with minimum jerk trajectories

Transactions of Japanese Society for Medical and Biological ...

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Transactions of Japanese Society for Medical and Biological engineering 2020年 58卷 584-585页

作者： Mori, Yoichi Yoshioka, Yutaro Yamasaki, Taiga Xin, Xin Izumi, Shinsaku Okayama Prefectural University Faculty of Computer Science and Systems Engineering Japan

Conventional models of human motor control can-not always possible to provide a clear understanding of the mechanism for controlling nonlinear dynamics of the musculoskeletal systems. In this study, we propose a model that combines the feedback linearization of the musculoskeletal system with an intermittent controller. This model can compatibly realize the nonlinear control of the musculoskeletal system and the simple motion planning in the workspace based on the minimum jerk criterion. Here, we show an example of a musculoskeletal model with a single joint. © 2020, Japan Soc. of Med. Electronics and Biol. engineering. All rights reserved.

关键词： Feedback linearization

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Development of an Interface that Expresses Twinkling Eyes by Superimposing Human Shadows on Pupils 22nd

Development of an Interface that Expresses Twinkling Eyes by...

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22nd International Conference on Human computer Interaction,HCII 2020

作者： Sejima, Yoshihiro Nishida, Makiko Watanabe, Tomio Faculty of Informatics Kansai University 2-1-1 Ryozenji-cho Takatsuki-shi Osaka569-1095 Japan Faculty of Design Okayama Prefectural University 111 Kuboki Soja-shi Okayama Japan Faculty of Computer Science and Systems Engineering Okayama Prefectural University 111 Kuboki Soja-shi Okayama Japan

ISBN: (纸本)9783030601164

Human eyes are related to own affects and emotions, and seem to twinkle when human has positive affects and emotions such as a strong interest and eagerness. Human is subconsciously attracted to the twinkling eyes. In this study, aiming at the development of a novel communication interface that attracts human, we focused on the reflected glare on the surface of eyeballs and proposed an expression method that superimposes human shadows on pupils. We conducted an impression experiment to evaluate the proposed method and demonstrated that the method was effective for attracting human. Based on the result, we developed an advanced interface that expresses twinkling eyes for attracting human. The developed interface generates a pseudo reflected glare by superimposing human shadow on each pupil as a pseudo-self-image. © 2020, Springer Nature Switzerland AG.

关键词： Glare

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A Edge Master Computing for Pineapple Monitoring System with Drone and Data-management 9

A Edge Master Computing for Pineapple Monitoring System with...

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9th International Congress on Advanced Applied Informatics, IIAI-AAI 2020

作者： Kobayashi, Tomoki Yokogawa, Tomoyuki Igawa, Nao Satoh, Yoichiro Sugino, Kimihoro Miyata, Hiroshi Fujii, Satoshi Arimoto, Kazutami Okayama Prefectural University Faculty of Computer Science and System Engineering Soja Okayama Japan National InstituteTechnology Okinawa College Information Communication Engineering Henoko Nago Okinawa Japan

ISBN: (纸本)9781728173979

This paper describes the pineapple monitoring system based on the edge computing which consists of the sensing drone and database. A huge sensing data transferred to the computer system will be changed from the cloud to edge, near future. The merits of this change are low power dissipation, reducing data transfer, real time operation, and security issues. To enjoy these merits, effective compaction of sensing data, energy efficient networking, and edge oriented data management architecture has been proposed. We design the pineapple monitoring system using above core technologies and evaluates the enhancement of system performance. © 2020 IEEE.

关键词： Drones

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Prototype of multi-layer personal cardiac monitoring system for data interoperability problem 20

Prototype of multi-layer personal cardiac monitoring system ...

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5th International Conference on Sustainable Information engineering and Technology, SIET 2020

作者： Pramukantoro, Eko Sakti Gofuku, Akio Graduate School of Interdisciplinary Science and Engineering in Health Systems Okayama University Japan Faculty of Computer Science University of Brawijaya Malang Indonesia

ISBN: (纸本)9781450376051

Personal monitoring of heart conditions offers an advantage as a prevention mechanism for cardiovascular disease. This system can be developed using a wearable sensor device along with IoT approach. However, the data interoperability problem often arises in attempt to develop an IoT-based system. Data interoperability comes from different data formats to save the data that are produced by health sensor devices. The current solution can be either cloud or edge-based middleware which both have their own merits and drawbacks. This study offers multi-layer monitoring heart conditions that combines cloud and edge-based middleware to solve data interoperability. The middleware on the edge layer performs data normalization using the JSON format and Restful API standard to transfer data to communicate with an IoT application. On the other hand, at the cloud side, it provides heterogeneous data storage with the ability to store various health data formats. © 2020 ACM.

关键词： Middleware

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Design of Scalable Controllers for Power systems ⁎

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IFAC-PapersOnLine 2020年第2期53卷 13466-13470页

作者： Shinsaku Izumi Kensuke Nishijima Xin Xin Faculty of Computer Science and Systems Engineering Okayama Prefectural University 111 Kuboki Soja Okayama 719-1197 Japan

This paper studies scalable control of power systems, i.e., control with the constraint that controllers of all generators are the same. This control framework is useful to reduce the cost of constructing large-scale power systems because we can obtain controllers of all generators merely by designing one controller. The problem addressed here is to find the same controllers stabilizing an equilibrium point of the resulting feedback system and improving the performance in terms of the time response. As a solution to this problem, we present controllers to uniformly increase the damping forces of generators. We then show that an equilibrium point of the resulting feedback system is stable under certain conditions. In addition, we present a design method of the controller gain for improving the performance of the resulting feedback system in terms of the time response.

关键词： Power systems scalable control stability output feedback control Lyapunov equation

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A NOVEL SYMMETRY IN NANOCARBONS: PRE-CONSTANT DISCRETE PRINCIPAL CURVATURE STRUCTURE

arXiv

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arXiv 2023年

作者： Kabata, Yutaro Matsutani, Shigeki Noda, Yusuke Ogata, Yuta Onoe, Jun School of Information and Data Sciences Nagasaki University 1-14 Bunkyo-machi Nagasaki City852-8131 Japan Electrical Engineering and Computer Science Graduate School of Natural Science & Technology Kanazawa University Kakuma Kanazawa920-1192 Japan Department of Information and Communication Engineering Okayama Prefectural University 111 Kuboki Okayama Soja719-1197 Japan Department of Mathematics Faculty of Science Kyoto Sangyo University Motoyama Kamigamo Kita-ku Kyoto603-8555 Japan Department of Energy Science and Engineering Nagoya University Furo-cho Chikusa-ku Aichi Nagoya464-8603 Japan

Since the first-principles calculations in quantum chemistry precisely provide possible configurations of carbon atoms in nanocarbons, we have analyzed the geometrical structure of the possible carbon configurations and found that there exists a novel symmetry in the nanocarbons, i.e., the pre-constant discrete principal curvature (pCDPC) structure. In terms of the discrete principal curvature based on the discrete geometry for trivalent oriented graphs developed by Kotani, Naito, and Omori [Comput. Aided Geom. Design, 58, (2017), 24-54], we numerically investigated discrete principal curvature distribution of the nanocarbons, C60, carbon nanotubes, C120 (C60 dimer), and C60-polymers (peanut-shaped fullerene polymers). While the C60 and nanotubes have the constant discrete principal curvature (CDPC) as we expected, it is interesting to note that the C60-polymers and C60 dimer also have the almost constant discrete principal curvature, i.e., pCDPC, which is surprising. A nontrivial pCDPC structure with revolutionary symmetry is available due to discreteness, though it has been overlooked in geometry. In discrete geometry, there appears a center axisoid which is the discrete analogue of the center axis in the continuum differential geometry but has three-dimensional structure rather than a one-dimensional curve due to its discrete nature. We demonstrated that such pCDPC structure exists in nature, namely in the C60-polymers. Furthermore, since we found that there is a positive correlation between the degree of the CDPC structure and stability of the configurations for certain class of the C60-polymers, we also revealed the origin of the pCDPC structure from an aspect of materials science. Copyright © 2023, The Authors. All rights reserved.

关键词： Dimers

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