- Elevator Systems and Control
- Vibration Control and Rheological Fluids
- Structural Engineering and Vibration Analysis
- Vehicle Dynamics and Control Systems
- Hemodynamic Monitoring and Therapy
- Traffic control and management
- Tactile and Sensory Interactions
- Traumatic Brain Injury and Neurovascular Disturbances
- Metal and Thin Film Mechanics
- Analytical Chemistry and Sensors
- Non-Invasive Vital Sign Monitoring
- Simulation Techniques and Applications
- Nuclear and radioactivity studies
- Optical Imaging and Spectroscopy Techniques
- Real-time simulation and control systems
- Blood Pressure and Hypertension Studies
- Microbial Metabolism and Applications
- Mechanical Behavior of Composites
- Engineering Diagnostics and Reliability
- Mining and Gasification Technologies
- Cardiovascular and Diving-Related Complications
- Disaster Response and Management
- Cardiomyopathy and Myosin Studies
- Fluid Dynamics Simulations and Interactions
- Optical Coherence Tomography Applications
Chiba University
2022
Obayashi (Japan)
2021
Kumamoto University
2021
Nikken Sekkei (Japan)
2021
Tokyo City University
2015-2018
Nihon Kohden (Japan)
1997-2017
Institute of Space and Astronautical Science
2016
Kowa (Japan)
2013
University of Fukui
2010-2012
Honda (United States)
2012
During the operation of an elevator emergency stop device, cage decelerates significantly. Some passengers have been injured in stoppages because they were subjected to a large impact force from emergency-stop device. Therefore, we focused on passengers' safety elevators and proposed device with spring magnetorheological fluid damper that enables damping coefficient be varied continuously by controlling magnetic field. In this paper, based International Standard guide for elevators, evaluate...
Total hemoglobin (tHb), carboxyhemoglobin (COHb), and methemoglobin (MetHb) are usually measured with a CO-oximeter. Noninvasive continuous measurement of these blood components is expected to decrease the pain patient. Therefore, we developed an instrument measure oxygen saturation (SpO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ), tHb, COHb, MetHb non invasively. Multiwavelength LED (600, 625, 660, 760, 800, 940, 1300 nm) combined...
In the countries sailing with an economic tailwind, many skyscrapers are going up. These buildings require systems of high-speed, safety, and comfortable elevators for its speedy vertical transportation. If drives elevator fail, emergency stop device is supposed to work immediately saving passengers lives in cage, because has outrageous potential energy ground level kinetic energy. Its dangerousness nothing compared that railways as surface transport. order reduce impact force stoppage,...
Background and Objectives Whether transfusion‐associated circulatory overload arises as a simple result of over‐transfusion or requires another trigger remains unclear. Here, we examined whether respiratory distress could be reproduced by massive transfusion alone in an animal model. Materials Methods A total 20 anaesthetized swine were equipped with monitors. Allogeneic blood was obtained from 10 donor swine. 4‐stage loading protocol each stage equivalent to 25% the volume ( BV ) recipient...
The efficacy and safety of a new platelet-activating factor receptor antagonist, E5880, were investigated for preventing cerebral vasospasm after subarachnoid hemorrhage (SAH) in 71 patients with SAH who underwent surgery ruptured aneurysms within 3 days. Intravenous E5880 administration (300 μg or 1200 twice daily) was begun 4 days continued 14 incidence symptomatic vasospasm, low-density area on computed tomography, angiographic lower than placebo groups previous studies. Clinical outcome...
Abstract Recently, the total number of distributed generators (DGs) such as photovoltaic generation system and wind turbine connected to an actual distribution network has increased drastically. The many must be operated keeping reliability power supply, quality, loss minimization. In order accomplish active operation take advantage connections DGs, a new coordinated with DGs is necessary. this paper, authors propose by using newly proposed sectionalizing switch control, sending voltage...
The objective of this paper is to design a control system which supports an operator's dexterity. In order the system, it necessary make mathematical model dynamics unicycle and analyze it. This focuses on modeling, analysis method. A input obtained by matching. Two models are actual desired model. derived Lagrange's method, other Hamiltonian method stabilizes unicycle. numerical simulation performed evaluate proposed system.
High-speed and long-distance elevator systems have a serious issue that large impact force from an emergency stop device injures the passengers in cage during stoppage. Therefore, we focused on safety of proposed new consists spring magnetorheological fluid damper having variable damping coefficient by controlled magnetic field. In this paper, would like to introduce our test installation spring, damper, sensors, digital controller with LabVIEW linear actuator for simulating deceleration...
We have developed an extremely compact mock circulation system. This system can simulate artery blood and generate a pulse wave with very small amount of blood. were also able to measure the in vitro pulsatile optical density ratio (Φvt) using this flow cell [1]. Results showed difference between Φvt vivo (Φvi) for same oxygen saturations. To explain difference, we proposed new flow-cell model that includes venous arterial flow. Because these systems environment accurately, they be applied...
This paper describes a hardware architecture of an adaptive transversal filter with long delay taps and its LSI implementation. We developed VLSI 512 which is suitable for echo canceller system. new compuatational method implementation, clarified the required computation accuracy dynamic range by computer simulation. built proto-type four channel system using chips sigle chip general purpose digital signal processor.
The time dependent variation of the stress concentration factor during creep is discussed for a visco-elastoplastic celluloid strip containing circular hole. at this raiser analysed by means proposed photo-viscoplasticity method several cases tensile loading.
Recently, the heat source renewal in existing office building has increased. In addition, many simulations have clarified that downsizing at is effective terms of both primary energy consumption and life cycle cost. Nevertheless, most cases, careful consideration not clear renewal, same equipment capacity as before selected. Probably, engineers recognize importance selecting an appropriate based on their knowledge practical experience. However, it difficult to propose downsizing, considering...
The number of skyscrapers may be one the barometers in showing economic power country. Such powerful countries continue to build high-rise buildings with various facilities for comfort and safety, based on advanced technologies. As transportation means such are mainly elevators, strict "Safety Standards" them provided. It is because elevators have large potential energy enough take away lives elevator-passengers. "Emergency Stop Device" speedily stopping elevator a key item save lives....
In countries where the economy is growing rapidly, many skyscrapers are being built one after another. For such skyscrapers, highspeed and safe elevators essential as transportation means. Therefore, we have proposed an elevator with magnetorheological fluid (i.e., MRF) dampers to improve safety of passengers ([1]). supplying elevators, consider various dangerous factors, natural disasters, accidents so on. If a disastrous earthquake occurs, works earthquake-sensing system stops at nearest...
Capnometry is a method to measure carbon dioxide (CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) in exhaled gas and its use during polysomnography (PSG) for diagnostic of sleep apnea-hypopnea syndrome expanding. However, some problems exist using capnometer combination with other respiratory monitoring devices because capnometry requires additional sampling cannula or airway adapter attached patients. To resolve these problems, we...