检索结果-南通市图书馆

Reliability Assessment Tool Based on Deep Learning and Data Preprocessing for OSS

在线全文

学校读者我要写书评

暂无评论

American Journal of Operations Research 2022年第3期12卷 111-125页

作者： Shoichiro miyamoto Yoshinobu Tamura Shigeru Yamada Yamaguchi University Yamaguchi Japan Tottori University Tottori Japan

Recently, many open source software (OSS) developed by various OSS projects. Also, the reliability assessment methods of OSS have been proposed by several researchers. Many methods for software reliability assessment have been proposed by software reliability growth models. Moreover, our research group has been proposed the method of reliability assessment for the OSS. Many OSS use bug tracking system (BTS) to manage software faults after it released. It keeps a detailed record of the environment in terms of the faults. There are several methods of reliability assessment based on deep learning for OSS fault data in the past. On the other hand, the data registered in BTS differences depending on OSS projects. Also, some projects have the specific collection data. The BTS has the specific collection data for each project. We focus on the recorded data. Moreover, we investigate the difference between the general data and the specific one for the estimation of OSS reliability. As a result, we show that the reliability estimation results by using specific data are better than the method using general data. Then, we show the characteristics between the specified data and general one in this paper. We also develop the GUI-based software to perform these reliability analyses so that even those who are not familiar with deep learning implementations can perform reliability analyses of OSS.

关键词： Open Source Software Deep Learning Software Reliability Deep Learning Software Tool

Axonal remodeling in the corticospinal tract after stroke： how does rehabilitative training modulate it？

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2017年第2期12卷 185-192页

作者： Naohiko Okabe Kazuhiko Narita Osamu miyamoto Second Department of Physiology Kawasaki Medical School 577 Matsushima Kurashiki City Okayama Japan

Stroke causes long-term disability, and rehabilitative training is commonly used to improve the consecutive functional recovery. Following brain damage, surviving neurons undergo morphological alterations to reconstruct the remaining neural network. In the motor system, such neural network remodeling is observed as a motor map reorganization. Because of its significant correlation with functional recovery, motor map reorganization has been regarded as a key phenomenon for functional recovery after stroke. Although the mechanism underlying motor map reorganization remains unclear, increasing evidence has shown a critical role for axonal remodeling in the corticospinal tract. In this study, we review previous studies investigating axonal remodeling in the corticospinal tract after stroke and discuss which mechanisms may underlie the stimulatory effect of rehabilitative training. Axonal remodeling in the corticospinal tract can be classified into three types based on the location and the original targets of corticospinal neurons, and it seems that all the surviving corticospinal neurons in both ipsilesional and contralesional hemisphere can participate in axonal remodeling and motor map reorganization. Through axonal remodeling, corticospinal neurons alter their output selectivity from a single to multiple areas to compensate for the lost function. The remodeling of the corticospinal axon is influenced by the extent of tissue destruction and promoted by various therapeutic interventions, including rehabilitative training. Although the precise molecular mechanism underlying rehabilitation-promoted axonal remodeling remains elusive, previous data suggest that rehabilitative training promotes axonal remodeling by upregulating growth-promoting and downregulating growth-inhibiting signals.

关键词： stroke rehabilitative training axonal remodeling corticospinal tract motor map reorganization motor system neurotrophic factor functional compensation neural activity growth promoting signal growth inhibitory signal task-specific training

CONTROLLED SYNTHESIS OF AMPHIPHILIC BLOCK POLYMERS HAVING GLUCOSE RESIDUES AND THEIR STRUCTURE FORMATION

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 1999年第1期17卷 21-26页

作者： Takeaki miyamoto Masahiko Minoda Yoshinobu Tsujii Institute for Chemical Research Kyoto University Uji Kyoto 611 JapanInstitute for Chemical Research Kyoto University Uji Kyoto 611 JapanInstitute for Chemical Research Kyoto University Uji Kyoto 611 Japan

Vinyl ether (VE)-based amphiphilic block copolymers with D-glucose residues as hydrophilicpendants were synthesized by CH_3 CH(OiBu)Cl/ZnI_2-initiated sequential living cationic copolymerization of3-O-(vinyloxy)ethyl-1, 2:5, 6-di-O-isopropylidene-D-glucofuranose (IGVE) and isobutyl VE (IBVE ) andsubsequent deprotection. The precursor block copolymers had a narrow molecular weight distribution(M_w/M_n～1.1) and a controlled segmental composition. The solubility characteristics of the amphiphiliccopolymer depended strongly on composition. Their solvent-cast thin films were examined, under atransmission electron microscope, and could be seen to exhibit various microphase-separated surfacemorphologies such as spheres, cylinders, and lamellae, depending on composition. The amphiphiliccopolymers with the appropriate segmental composition were found to form a stable monolayer at the air-water interface, which was successfully transferred onto a substrate by the Langmuir-Blodgett (LB)technique. The layered strucfure of the built-up LB films was controlled by blending the homopolymer.

关键词： Glucose-substituted amphiphilic block polymer Controlled structure

Study on ceramic photonic bandgap structure with three-dimensional diamond lattice

在线全文

学校读者我要写书评

暂无评论

Journal of University of Science and Technology Beijing 2006年第5期13卷 461-464页

作者： Haiqing Yin Wenbin Cao Y. miyamoto Material Science and Engineering School University of Science and Technology Beijing Beijing 100083 China Joining and Welding Research Institute Osaka University Osaka 567-0047 Japan

A novel process, which was based on powder injection molding, was investigated for the fabrication of ceramic photonic bandgap structure with three-dimensional diamond lattice. The SiO2-TiO2 ceramic powder was mixed with a water-soluble agent to produce slurry. The slurry was then injected into an epoxy mold with inverse diamond lattice, fabricated by the stereolitographic rapid prototyping process. To increase the density of the green compact, cold isostatic pressing was applied on the unit. Using thermal debinding, the water-soluble agent and the epoxy were extracted at 360 and 650 K, respectively. Sintering was immediately done at 950 K for 5 h and the desired three-dimensional ceramic structure was obtained. The calculated band diagram for this structure indicated the existence of an absolute photonic bandgap for all wave vectors. At 14.7-18.5 GHz, a complete band gap was located with a maximum attenuation of 30 dB at 17 GHz, when transmission was measured in the 〈100〉 direction between 10 and 20 GHz.

关键词： photonic crystals (PCs) powder injection molding ceramic powder diamond lattice

Role of osteoclasts in regulating hematopoietic stem and progenitor cells

在线全文

学校读者我要写书评

暂无评论

World Journal of Orthopedics 2013年第4期4卷 198-206页

作者： Takeshi miyamoto Department of Orthopedic Surgery Keio University School of Medicine 35 Shinano-machi Shinjuku-ku Tokyo 160-8582 Japan Keio Kanrinmaru Project Keio University School of Medicine 35 Shinano-machi Shinjuku-ku Tokyo 160-8582 Japan Department of Integrated Bone Metabolism and Immunology Keio University School of Medicine 35 Shina-no-machi Shinjuku-ku Tokyo 160-8582 Japan

Bone marrow(BM) cavities are utilized for hematopoiesis and to maintain hematopoietic stem cells(HSCs). HSCs have the ability to self-renew as well as to differentiate into multiple different hematopoietic lineage cells. HSCs produce their daughter cells throughout the lifespan of individuals and thus, maintaining HSCs is crucial for individual life. BM cavities provide a specialized microenvironment termed "niche" to support HSCs. Niches are composed of various types of cells such as osteoblasts, endothelial cells and reticular cells. Osteoclasts are unique cells which resorb bones and are required for BM cavity formation. Loss of osteoclast function or differentiation results in inhibition of BM cavity formation, an osteopetrotic phenotype. Osteoclasts are also reportedly required for hematopoietic stem and progenitor cell(HSPC) mobilization to the periphery from BM cavities. Thus, lack of osteoclasts likely results in inhibition of HSC maintenance and HSPC mobilization. However, we found that osteoclasts are dispensable for hematopoietic stem cell maintenance and mobilization by using three independent osteoclast-less animal models. In this review, I will discuss the roles of osteoclasts in hematopoietic stem cell maintenance and mobilization.

关键词： Osteoclasts Hematopoietic stem and progenitor cell Mobilization Receptor activator of nuclear factor kappa B ligand Osteomac Osteopetrosis op/op C-Fos Osteoprotegerin

A review on glass welding by ultra-short laser pulses

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2019年第4期1卷 1-10页

作者： Kristian Cvecek Sarah Dehmel Isamu miyamoto Michael Schmidt Institute of Photonic Technologies Friedrich-Alexander-Universität Erlangen-NürnbergErlangenGermany SAOT—Erlangen Graduate School in Advanced Optical Technologies Friedrich-Alexander-Universität Erlangen-NürnbergErlangenGermany blz—Bayerisches Laserzentrum GmbH ErlangenGermany Osaka University OsakaJapan

Glass welding by ultra-short pulsed(USP)lasers is a piece of technology that offers high strength joints with hermetic *** joints are typically formed in glass that is transparent to the laser by exploiting nonlinear absorption effects that occur under extreme *** the temperature reached during the process is on the order of a few 1000°C,the heat affected zone(HAZ)is confined to only tens of *** is this controlled confinement of the HAZ during the joining process that makes this technology so appealing to a multitude of applications because it allows the foregoing of a subsequent tempering step that is typically essential in other glass joining techniques,thus making it possible to effectively join highly heat sensitive *** this work,we give an overview on the process,development and applications of glass welding by USP lasers.

关键词： USP glass welding ultra-short pulsed laser processing brittle materials glass joining

Seismic Response of Magnetically Levitated House

在线全文

学校读者我要写书评

暂无评论

Open Journal of Earthquake Research 2022年第1期11卷 1-17页

作者： Yuji miyamoto Takaharu Nakano Atsushi Shimamura Kentaro Sho Department of Architecture and Civil Engineering Fukui University of Technology Fukui Japan Graduate School of Engineering Osaka University Osaka Japan Development Department Chemical Grouting Company Tokyo Japan

This study explored the seismic response of a house supporting base sides with a polymeric displacement control material and by magnetically levitating the foundation base. In this paper, we explore the possibility and efficacy of a seismic-isolated detached house as described above from both a shaking table experiment of model and three-dimensional finite element analysis. The seismic-isolated model showed stable response and its acceleration response was significantly reduced compared to the base-fixed model in the shaking table test. Three-dimensional finite element analysis was possible to simulate the experimental results. In the seismic response analysis of a full-scale detached house, the seismic-isolated model showed response reduction and its residual displacement was smaller than that of the sliding-base isolation model.

关键词： Seismic Response Reduction Magnetic Levitation Shaking Table Test 3D FEM

Microstructure evolution of a recycled Al-Fe-Si-Cu alloy processed by tube channel pressing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2018年第10期25卷 1166-1172页

作者： M.H.Farshidi M.Rifai H.miyamoto Department of Materials Science and Metallurgical Engineering Ferdowsi University of Mashhad Department of Mechanical Engineering Doshisha University

Although excellent recyclability is one of the advantages of Al alloys, a recycling process can reduce different properties of these alloys by adding coarse AlFeSi particles into the alloys' microstructures. One of the well-known methods for modifying the microstructure of metallic materials is the imposition of severe plastic deformation(SPD). Nevertheless, the microstructure evolutions of recycled Al alloys containing extraordinary fractions of AlFeSi particles during SPD processing have seldom been considered. The aim of the present work is to study the microstructure evolution of a recycled Al–Fe–Si–Cu alloy during SPD processing. For this purpose, tubular specimens of the mentioned alloy were subjected to different numbers of passes of a recently developed SPD process called tube channel pressing(TCP); their microstructures were then studied using different techniques. The results show that coarse AlFeSi particles are fragmented into finer particles after processing by TCP. However, decomposition and dissolution of AlFeSi particles through TCP processing are negligible. In addition, TCP processing results in an increase in hardness of the alloy, which is attributed to the refinement of grains, to an increase of the dislocation density, and to the fragmentation of AlFeSi particles.

关键词： AlFeSi intermetallic particle severe plastic deformation microstructure tube channel pressing

Sufficiently Elevated Core Body Temperature May Be Necessary to Maintain Cerebral Blood Flow Response throughout the Morning

在线全文

学校读者我要写书评

暂无评论

Neuroscience & Medicine 2022年第2期13卷 70-90页

作者： Ryohei Tanaka-Kanegae*# Shingo miyamoto Masao Sakurai Koichiro Hamada Saga Nutraceuticals Research Institute Otsuka Pharmaceutical Co. Ltd. Kanzaki Japan

In comparison to a carbohydrate-rich breakfast, a nutritionally balanced breakfast reportedly leads to a higher core body temperature because of diet-induced thermogenesis (DIT) and also results in higher task performance. This study aimed to examine the relationships among the core body temperature, blood glucose level, cerebral blood flow, and cognitive performance when the core body temperature is raised to a similar extent as in DIT in the morning. This crossover study included 18 male participants who performed four sets of cognitive tests in the morning with four different foot baths and glucose intake conditions. In elevated body temperature (EBT) conditions, the core body temperature was increased by a foot bath at 42˚C or 39˚C, while in low body temperature (LBT) conditions, it was maintained at 35˚C by a foot bath;the participants received no glucose or two intakes of 20-g glucose for each thermal condition. In addition to the core body temperature measurement, the cerebral blood flow in the dorsolateral prefrontal cortex (DLPFC) was measured using near-infrared spectroscopy. Three blood collections were performed to measure the changes in blood glucose levels. The results revealed that in the EBT conditions, the core body temperature remained 0.3˚C - 0.5˚C higher than that at wake-up time, while the glucose intake conditions increased blood glucose levels which remained higher than those during fasting. No significant between-treatment difference was observed in the results of cognitive tests. However, the blood flow in the DLPFC increased during the second test period in the EBT/glucose and LBT/glucose conditions, whereas during the fourth test period, it increased solely in the EBT/glucose condition. Thus, in addition to the blood glucose level, an elevated core body temperature within the physiological range may be needed for long-term maintenance of the cerebral blood flow response.

关键词： Elevated Core Body Temperature Cerebral Blood Flow Dorsolateral Prefrontal Cortex Near-Infrared Spectroscopy Cognitive Function Morning Breakfast Foot Bath