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Japanese Sign Language Recognition by Combining Joint Skeleton-Based Handcrafted and Pixel-Based Deep Learning Features with Machine Learning Classification

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Computer Modeling in Engineering & Sciences 2024年第6期139卷 2605-2625页

作者： Jungpil Shin Md.Al Mehedi Hasan Abu Saleh Musa Miah kota suzuki Koki Hirooka School of Computer Science and Engineering The University of AizuAizuwakamatsu965-8580Japan Department of Computer Science&Engineering Rajshahi University of Engineering&TechnologyRajshahi6204Bangladesh

Sign language recognition is vital for enhancing communication accessibility among the Deaf and hard-of-hearing *** Japan,approximately 360,000 individualswith hearing and speech disabilities rely on Japanese Sign Language(JSL)for ***,existing JSL recognition systems have faced significant performance limitations due to inherent *** response to these challenges,we present a novel JSL recognition system that employs a strategic fusion approach,combining joint skeleton-based handcrafted features and pixel-based deep learning *** system incorporates two distinct streams:the first stream extracts crucial handcrafted features,emphasizing the capture of hand and body movements within JSL ***,a deep learning-based transfer learning stream captures hierarchical representations of JSL gestures in the second ***,we concatenated the critical information of the first stream and the hierarchy of the second stream features to produce the multiple levels of the fusion features,aiming to create a comprehensive representation of the JSL *** reducing the dimensionality of the feature,a feature selection approach and a kernel-based support vector machine(SVM)were used for the *** assess the effectiveness of our approach,we conducted extensive experiments on our Lab JSL dataset and a publicly available Arabic sign language(ArSL)*** results unequivocally demonstrate that our fusion approach significantly enhances JSL recognition accuracy and robustness compared to individual feature sets or traditional recognition methods.

关键词： Japanese Sign Language(JSL) hand gesture recognition geometric feature distance feature angle feature GoogleNet

Determination of Aerodynamic Sound Sources on Periodicity Noise Generated from a Micro Wind Turbine

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Open Journal of Fluid Dynamics 2014年第5期4卷 440-446页

作者： Soichi Sasaki Ryo Sakada kota suzuki Graduate School of Engineering Nagasaki University Nagasaki Japan

To discuss the relationship between the periodicity noise and the aerodynamic noise source of a wind turbine, the characteristics of the actual wind turbine were measured by a wind tunnel;moreover, the flow around the impeller immersed in the uniform flow was solved by numerical simulation. In the observed wind turbine, when the mainstream velocity was 7.4 m/s or more, the power coefficient reached maximum at tip speed ratio 8. When the mainstream velocity increased in the driving condition of the maximum power point, the aerodynamic noise increased due to the periodicity noise in the vicinity of 1000 Hz and the broadband noise in the high-frequency domain. The noise sources were concentrated at the leading edge and trailing edge on the suction surface side. We experimentally indicated that the pressure fluctuation of the leading edge was the source of the periodicity noise.

关键词： Aerodynamic Noise Wind Turbine Renewable Energy

Lithium-site substituted argyrodite-type Li_(6)PS_(5)I solid electrolytes with enhanced ionic conduction for all-solid-state batteries

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Science China(Technological Sciences) 2023年第7期66卷 2059-2068页

作者： GAO Ling XIE YuLin TONG Yan XU Miao YOU JiaLe WEI HuiPing YU XiangXiang XU SiQi ZHANG Yi CHE Yong TANG Ya suzuki kota KANNO Ryoji ZHAO GuoWei College of Chemistry and Chemical Engineering Huanggang Normal UniversityHuanggang 438000China State Key Laboratory of Space Power-Sources Technology Shanghai Institute of Space Power-SourcesShanghai 200245China Shanghai Enpower Technology Co. Ltd.Shanghai 201802China Beijing Enpower Technology Co. Ltd.Beijing 102628China Department of Chemistry School of ScienceShanghai UniversityShanghai 200444China Research Center for All-Solid-State Battery Institute of Innovation ResearchTokyo Institute of TechnologyYokohama 226-8502Japan

Argyrodites,Li_(6)PS_(5)X(X=Cl,Br,I),have piqued the interest of researchers by offering promising lithium ionic conductivity for their application in all-solid-state batteries(ASSBs).However,other than Li_(6)PS_(5)Cl(651Cl)and Li_(6)PS_(5)Br(651Br),Li_(6)PS_(5)I(651I)shows poor ionic conductivity(10^(-7)S cm^(-1)at 298 K).Herein,we present Al-doped 651I with I^(-)/S^(2-)site disordering to lower activation energy(Ea)and improve ionic *** formed argyrodite-type solid solutions with a composition of(Li_(6–3x)Al_(x))PS_(5)I in 0≤x≤0.10,and structural analysis revealed that Al^(3+)is located at Li ***,the Al-doped samples contained anion I^(-)/S^(2-)site disorders in the crystal structures and smaller lattice parameters than the non-doped *** spectroscopy measurements indicated that Al-doping reduced the ionic diffusion barrier,Ea,and increased the ionic conductivity to 10^(-5)S cm^(-1);the(Li5.7Al0.1)PS5I had the highest ionic conductivity in the studied system,at 2.6×10^(-5)S cm^(-1).In a lab-scale ASSB,with(Li_(5.7)Al_(0.1))PS_(5)I functioned as a solid electrolyte,demonstrating the characteristics of a pure ionic conductor with negligible electronic *** evaluated ionic conduction is due to decreased Li+content and I^(-)/S^(2-)disorder ***-site cation doping enables an in-depth understanding of the structure and provides an additional approach to designing betterperforming SEs in the argyrodite system.

关键词： argyrodite Li6PS5I solid electrolytes ionic conductor ionic conductivity

Therapeutic potential of stem cells in subarachnoid hemorrhage

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Neural Regeneration Research 2025年第4期20卷 936-945页

作者： Hideki Kanamaru Hidenori suzuki Department of Neurosurgery Mie University Graduate School of MedicineTsuJapan

Aneurysm rupture can result in subarachnoid hemorrhage,a condition with potentially severe consequences,such as disability and *** the acute stage,early brain injury manifests as intracranial pressure elevation,global cerebral ischemia,acute hydrocephalus,and direct blood–brain contact due to aneurysm *** may subsequently cause delayed cerebral infarction,often with cerebral vasospasm,significantly affecting patient *** complications such as brain volume loss and chronic hydrocephalus can further impact *** the mechanisms of subarachnoid hemorrhage-induced brain injury is paramount for identifying effective *** cell therapy,with its multipotent differentiation capacity and anti-inflammatory effects,has emerged as a promising approach for treating previously deemed incurable *** review focuses on the potential application of stem cells in subarachnoid hemorrhage pathology and explores their role in neurogenesis and as a therapeutic intervention in preclinical and clinical subarachnoid hemorrhage studies.

关键词： delayed cerebral ischemia early brain injury matricellular protein neurogenesis stem cell therapy subarachnoid hemorrhage

Stage IV malignant transformation of mature cystic teratoma palliatively treated with concurrent chemoradiotherapy:A case report

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World Journal of Clinical Cases 2025年第1期13卷 56-61页

作者： Saori Kondo Takashi suzuki Kanato Yoshiike Sakura Yamanaka Kenta Sonehara Hiroshi Nabeshima Osamu Oguchi Department of Obstetrics and Gynecology Saku Central Hospital Advanced Care CenterSaku City 385-0051NaganoJapan

BACKGROUND Malignant transformation(MT)of mature cystic teratoma(MCT)has a poor prognosis,especially in advanced *** chemoradiotherapy(CCRT)has an inhibitory effect on *** SUMMARY Herein,we present a case in which CCRT had a reduction effect preoperatively.A 73-year-old woman with pyelonephritis was referred to our *** tomography revealed right hydronephrosis and a 6-cm pelvic *** ultrasound-guided fine-needle biopsy(EUS-FNB)revealed squamous cell *** patient was diagnosed with MT of *** to her poor general con-dition and renal malfunction,we selected CCRT,expecting fewer adverse *** CCRT,her performance status improved,and the tumor size was reduced;surgery was *** months postoperatively,the patient developed dis-semination and lymph node *** chemotherapy was *** died 18 months after treatment *** EUS-FNB was useful in the diagnosis of MT of MCT;CCRT suppressed the disea-se and improved quality of life.

关键词： Mature cystic teratoma Malignant transformation Squamous cell carcinoma Concurrent chemoradiotherapy Endoscopic ultrasound-guided fine-needle biopsy Case report

Modeling of Individual Cylinder Air-Fuel Ratio for IC Engines with Multi-Cylinders

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Modeling of Individual Cylinder Air-Fuel Ratio for IC Engine...

Design Method of Guide Vane for Wells Turbine

第三十届中国控制会议

作者： SATA kota suzuki Kenji Toyota Motor Corporation

＜正＞In internal-combustion engines with multi cylinders,fuel is injected into cylinders and exhaust gas is discharged from cylinders serially and *** going through runners,exhaust gas flows into the confluence region of exhaust manifold where oxygen sensor is equipped for the air-fuel ratio measurement of the mixed *** paper aims to present a modeling approach from individual cylinder fuel injection to the output of the *** consideration of above features of the exhaust system,a BDC-scaled periodic model is *** further illustration,some previous models are compared with new model. Simulation shows that the new model describes appropriately the relation between individual fuel injection and mixed air-fuel ratio.

关键词： Air-Fuel Ratio Individual Fuel Injection Periodic Model

来源： cnki会议评论

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Journal of Thermal Science 2006年第2期15卷 126-131页

作者： Masami suzuki Department of Mechanical Engineering Graduate School of Engineering The University of Tokyo

Guide vanes are installed in the Wells turbine in order to improve its efficiency, self-rotating characteristics and off design performance with stall. This work attempts to explain the role of these guide vanes on the basis of momentum theory. It is shown that the upstream vanes are more effective in enhancing efficiency than the downstream ones. A design method for guide vanes is suggested based on experimental data and potential theory. Experimental studies carried out by the author confirm the theory proposed.

关键词： wells turbine guide vane cascade potential flow wave energy converter ocean engineering

Biomechanical Stability of Open-Wedge High Tibial Osteotomy: Comparison of Two Locking Plates

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Open Journal of Orthopedics 2014年第10期4卷 257-262页

作者： kota Watanabe Tomoaki Kamiya Daisuke suzuki Hidenori Otsubo Atsushi Teramoto Tomoyuki suzuki Toshihiko Yamashita Department of Physical Therapy Sapporo Medical University School of Health Science Sapporo Japan Department of Orthopaedic Surgery Sapporo Medical University School of Medicine Sapporo Japan Department of Musculoskeletal Biomechanics and Surgical Development Sapporo Medical University Sapporo Japan

Introduction: Recently, new plates with locking screws have been developed and used for medial open-wedge high tibial osteotomy (HTO). The purpose of this study was to evaluate and compare biomechanical properties of different internal fixations in open-wedge HTO using the two currently available locking plates. Methods: Eight paired fresh-frozen cadaveric lower extremities were vertically embedded in steel boxes. The axial compression load was applied to the legs using the mechanical testing machine. The axial compression load test from 0 N to 550 N and the failure test were performed before and after HTO. One side of the leg of a specimen was fixed with the Puddu locking plate and the other side was fixed with the TomoFix plate to compare the two plates using the same specimen. A mode of failure and vertical displacement of the medial and lateral parts of the tibia at the osteotomy gap was recorded using a video camera in the failure test. The load–displacement data were analyzed to calculate stiffness, failure load, and displacement at failure. Results: The mean failure load was 1471.4 N and 1692.3 N and total vertical displacement at failure was 3.1 mm and 2.9 mm with the Puddu and TomoFix plates, respectively. During axial compression loading, displacements mainly occurred at the lateral osteotomy gap, while the medial gap was well preserved. No significant differences were observed in the failure load, displacement, or mode of failure between the two plates. Conclusions: The Puddu and TomoFix plates had similar biomechanical properties in open-wedge HTO. The results indicated reliable stability after open-wedge HTO without fibular osteotomy.

关键词： High Tibial Osteotomy Puddu Plate TomoFix Cadaver Biomechanics

Sodium-glucose co-transporter-2 inhibitor-associated euglycemic diabetic ketoacidosis that prompted the diagnosis of fulminant type-1 diabetes:A case report

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World Journal of Clinical Cases 2021年第13期9卷 3163-3169页

作者： Taro Yasuma Yuko Okano Soichiro Tanaka kota Nishihama Kazuhito Eguchi Chisa Inoue Kanako Maki Akihiro Uchida Mei Uemura Toshinari suzuki Corina N D'Alessandro-Gabazza Esteban C Gabazza Yutaka Yano Department of Diabetes Metabolismand Endocrinology and ImmunologyMie UniversityTsu 514-8507Japan Department of Diabetes Metabolismand EndocrinologyMie UniversityTsu 514-8507Japan Department of Immunology Mie University School of MedicineMie UniversityTsu 514-8507Japan Department of Immunology Mie University Faculty and Graduate School of MedicineTsu 514-8507Japan Department of Diabetes Mie University Graduate School of MedicineTsu 514-8507Japan

Fulminant type 1 diabetes mellitus(FT1DM)is a subtype of type 1 diabetes mellitus characterized by an abrupt onset and a rapid and complete functional loss of isletβ*** is a very rare disease generally associated with ketoacidosis and the absence of circulating pancreatic islet-related *** ketoacidosis with normal blood glucose levels has been reported during sodiumglucose co-transporter 2(SGLT2)inhibitor *** SUMMARY The patient was a 43-year-old woman that consulted a medical practitioner for malaise,thirst,and *** analysis showed high blood glucose levels(428 mg/dL),a mild increase of hemoglobin A1c(6.6%),and increased ketone bodies in *** patient was diagnosed with type 2 diabetes *** patient was initially treated with insulin,which was subsequently changed to an oral SGLT2 *** to glutamic acid decarboxylase were *** days after receiving oral SGLT2 inhibitor,she consulted at Mie University Hospital,complaining of fatigue and *** analysis revealed diabetic ketoacidosis with almost normal blood glucose *** endogenous insulin secretion was markedly low,and the serum levels of islet-related autoantibodies were *** made the diagnosis of FT1DM with concurrent SGLT2 inhibitor-associated euglycemic diabetic *** patient's general condition improved after therapy with intravenous insulin and withdrawal of oral *** was discharged on day 14 with an indication of multiple daily insulin *** This patient is a rare case of FT1DM that developed SGLT2 inhibitor-associated diabetic ketoacidosis with almost normal blood glucose *** case report underscores the importance of considering the diagnosis of FT1DM in patients with negative circulating autoantibodies and a history of hyperglycemia that subsequently develop euglycemic diabetic ketoacidosis following treatment with a SGLT2 inhibitor.

关键词： Euglycemic diabetic ketoacidosis Sodium-glucose cotransporter 2 inhibitors Fulminant type 1 diabetes Case report