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Sakamoto Yoshihito,Yamasaki Michiaki,Kawamura Yoshihito 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
Fabrication of bulk alloy has been performed through the consolidation of rapidly solidified ribbons. The bulk alloy exhibited excellent mechanical properties, high tensile yield strength of 530 MPa, and large elongation of 3 %. Microstructure of the alloy was characterized by equiaxed fine grains that consist of -Mg, long period ordered (LPO) structure phase, and -type cubic compound. The strengthening of the alloys may be due to fine grains with LPO structure phase and -type compound.
( Yoshihito Sugita ) 범태평양응용언어학회 2009 범태평양응용언어학회지 Vol.13 No.2
The main purpose of this research is 1) to establish a framework for the test development and the constructs of writing performance test, 2) to implement a developed writing performance assessment, and 3) to examine the degree of reliability and validity of the assessment tasks and rating scales. Construct-based processing approach to testing resulted in a comprehensive framework for our test development. Accuracy and communicability were defined as constructs, and the test development proceeded according to the three stages. The test was conducted as an examination into the assessment tasks and rating scales, and the analyses were done using FACETS. The results showed that 1) the difficulty of the two tasks and the impressionistic scoring were considered equivalent, which provided reasonable fit to the Rasch model, 2) the equivalence of task difficulty may indicate that task development based on constructbased processing approach could be reliable and valid to estimate students`` writing ability, and 3) the rating scales associated with the five rating categories and their specific written samples were shown to be mostly comprehensible and usable by raters, and demonstrated acceptable fit. However, there is still room for argument about the reliability and validity of assessment tasks and rating scales.
Yoshihito Fujita,Asuka Kondo,Hiroki Yamauchi,Eisuke Kako,Kazuya Sobue 대한마취통증의학회 2013 Korean Journal of Anesthesiology Vol.64 No.6
Background: The requisite anesthetic concentration of sevoflurane required to obtain adequate sedation when sufficient analgesics are supplied has not been determined. The purpose of this study was to determine the requisite age-associated concentration of sevoflurane to obtain an adequate level of anesthesia during combined epidural-general anesthesia by bispectral index (BIS) monitoring. Methods: Twenty-seven elective abdominal surgery patients (American Society of Anesthesiologists physical status I-II) were enrolled. The patients were divided into two groups of more or less than 60 years of age. We investigated the concentration of sevoflurane required to obtain an adequate sedation level during combined epidural-general anesthesia, maintaining the BIS value between 40 and 60. Results: The requisite sevoflurane concentration required to keep the BIS value at 40-60 was not stable during surgery. In the younger group, the maximum concentration of sevoflurane needed during surgery was 1.95 ± 0.14 (95% confidence interval: 1.87-2.10) vol%, while it was 1.54 ± 0.44 (95% confidence interval: 1.27-1.80) vol% in the older group (P < 0.01). Conclusions: The requisite concentration of sevoflurane required with combined epidural-general anesthesia was 2.5 vol% for the younger group and 2.0 vol% for the older group as determined by BIS monitoring. We believe that these percentages are sufficient to avoid awareness during surgery with adequate analgesia.
S-3 : Japanese Basic Clinical Microbiology Laboratories and Thought
( Yoshihito Otsuka ) 대한임상병리사협회 2009 임상미생물검사학회 발표자료집 Vol.2009 No.-
I would like to introduce the basic methods used in clinical microbiology laboratories in Japan. As of September, 2009, there are 8,766 hospitals in Japan. However, among these, only 1,700 hospitals have a microbiology laboratory. Microbiology laboratories commonly perform diagnostic tests for acute infections such as culture of bacterial, acid-fast and fungal pathogens and antigen POCT. But in Japan, microbiology laboratories do not only report the test results to the physician, they also take an active role in the diagnosis of the cause of infection, in the selection of appropriate antibiotics and treatment options, and in the planning and implementation of infection control measures.
Magnetically Levitated Linear Conveying System
Yoshihito Miyatake,Ryouhei Jinno,Mochimitsu Komori 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Magnetically levitated conveying system using superconductors has a demerit that it is not able to change thelevitation height between levitated vehicle and magnetic rail. In this study, we tried to improve this demerit by applying pulsed-field magnetization to the system. We made a prototype of magnetically levitated conveying system based onnumerical analysis.
Yoshihito Sakai,Kenyu Ito,Tetsuro Hida,Sadayuki Ito,Atsushi Harada 대한척추외과학회 2015 Asian Spine Journal Vol.9 No.2
Study Design: Preliminary study. Purpose: To assess the association of neuropathic pain with chronic low back pain (LBP) and the effect of pregabalin on neuropathic pain in the elderly. Overview of Literature: Of those with chronic LBP, 37% were predominantly presenting with neuropathic pain in young adults. Pregabalin is effective for pain in patients with diabetic neuropathy and peripheral neuralgia. No study has reported on the effects of pregabalin for chronic LBP in elderly patients yet. Methods: Pregabalin was administered to 32 patients (age, ≥65 years) with chronic LBP for 4 weeks. Pain and activities of daily living were assessed using the Neuropathic Pain Screening Questionnaire (NePSQ), the pain DETECT questionnaire, visual analog scale, the Japanese Orthopedic Association score, the short form of the McGill Pain Questionnaire and the Roland Morris Disability Questionnaire. Modic change and spinal canal stenosis were investigated using magnetic resonance imaging. Results: Altogether, 43.3% of patients had neuropathic pain according to the NePSQ and 15.6% patients had pain according to the pain DETECT. The efficacy rate of pregabalin was 73.3%. A significant effect was observed in patients with neuropathic pain after 4 weeks of administration. Conclusions: Neuropathic pain was slightly less frequently associated with chronic LBP in the elderly. Pregabalin was effective in reducing pain in patients with chronic LBP accompanied with neuropathic pain. Lumbar spinal stenosis and lower limb symptoms were observed in patients with neuropathic pain. We recommend the use of pregabalin for patients after evaluating a screening score, clinical symptoms and magnetic resonance imaging studies.
3D Face Reconstruction from a Single Image Using Machine Learning Methodology
Yoshihito Mori,Yoshiaki Yasumura,Kuniaki Uehara 한국멀티미디어학회 2009 한국멀티미디어학회 국제학술대회 Vol.2009 No.-
This paper presents a method for 3D face reconstruction from a single image. To reconstruct a 3D-shape from a single image, we need to model the relationship between images and shapes. The relationship defines a function from image brightness variation to local shape variation. Some existing methods for 3D reconstruction assume a series of reflectance models that try to emulate the relationship based on physical theoretics. However, the models of the existing methods are not able to fit actual world enough. Therefore, we propose heuristic approach, which empirically learns the relationship by statistical machine learning methodology. Firstly, we create surface normal estimators by learning the relationship between image patches of brightness and true surface normals. However, these estimators make misestimation in some cases. To correct them, we additionally create surface normal correctors by learning from image patches, estimated normal patches, and true normals. We conducted some experiments for evaluating this method. These results showed efficiency of our approach.