Search results for: Hiroaki Yamada

Items from 1 to 20 out of 77 results

article

Analysis of drug adverse events in elderly patients based on the Japanese Adverse Drug Event Report Database

Akira Okada, Shoji Sera, Maho Taguchi, Hiroaki Yamada, more

Journal of Clinical Pharmacy and Therapeutics > 47 > 8 > 1264 - 1269

What is known and Objective Compared with the general adult population, pharmacokinetics and changes in drug responsiveness occur to a greater extent in the elderly. Interactions may occur between drugs used in combination to treat various diseases and may cause adverse events (AEs). We conducted a cross‐sectional risk assessment of AEs in elderly patients based on information gathered from Japanese...

article

Chemical and microbial characterization for fermentation of water‐soluble cellulose acetate in human stool cultures

Hiroaki Yamada, Yuto Watabe, Yutaka Suzuki, Satoshi Koike, more

Journal of the Science of Food and Agriculture > 101 > 7 > 2950 - 2960

BACKGROUND Water‐soluble cellulose acetate (WSCA), a synthetic fiber source, was applied to human stool cultures and to pure cultures of representative Bacteroides species to characterize the fermentation properties of WSCA in the human gut, and to assess the potential availability of WSCA as a food or additive candidate. RESULTS All nine of the different types of WSCA tested here provided increased...

article

Building a corpus of legal argumentation in Japanese judgement documents: towards structure-based summarisation

Hiroaki Yamada, Simone Teufel, Takenobu Tokunaga

Artificial Intelligence and Law > 2019 > 27 > 2 > 141-170

We present an annotation scheme describing the argument structure of judgement documents, a central construct in Japanese law. To support the final goal of this work, namely summarisation aimed at the legal professions, we have designed blueprint models of summaries of various granularities, and our annotation model in turn is fitted around the information needed for the summaries. In this paper we...

article

Correction to: Helicobacter-induced gastric inflammation alters the properties of gastric tissue stem/progenitor cells

Wataru Shibata, Soichiro Sue, Sachiko Tsumura, Yasuaki Ishii, more

BMC Gastroenterology > 2018 > 18 > 1 > 1-1

Correction Unfortunately, the original article [1] contained an error incorporated during production. A duplicated version of Table 1 was published in place of Table 2. Table 2 has been corrected in the original article and is also included correctly below.

article

Helicobacter-induced gastric inflammation alters the properties of gastric tissue stem/progenitor cells

Wataru Shibata, Soichiro Sue, Sachiko Tsumura, Yasuaki Ishii, more

BMC Gastroenterology > 2017 > 17 > 1 > 1-11

Background Although Helicobacter-induced gastric inflammation is the major predisposing factor for gastric carcinogenesis, the precise mechanism by which chronic gastritis causes gastric cancer remains unclear. Intestinal and spasmolytic polypeptide-expressing metaplasia (SPEM) is considered as precancerous lesions, changes in epithelial tissue stem/progenitor cells after chronic inflammation has...

chapter

Harmonics compensation with constant DC-capacitor voltage-control-based strategy of smart charger for electric vehicles in single-phase three-wire distribution feeders under distorted source voltage and load currents conditions

Fuka Ikeda, Kei Nishikawa, Yuki Okamoto, Hiroaki Yamada, more

2017 IEEE Energy Conversion Congress and Exposition (ECCE) > 2975 - 2982

2017 IEEE Energy Conversion Congress and Exposition (ECCE)

This paper discusses the harmonics compensation of the constant dc-capacitor voltage-control (CDCVC)-based strategy of smart charger (SC) for electric vehicles (EVs) in single-phase three-wire distribution feeders (SPTWDFs) under the distorted source voltage and load currents conditions. The basic principle of the CDCVC-based harmonics compensation strategy under the distorted source voltage and load...

chapter

High-frequency induction heating for small-foreign-metal particle detection using 400 kHz SiC-MOSFETs inverter

Takuya Shijo, Shinya Kurachi, Yuki Uchino, Yujiro Noda, more

2017 IEEE Energy Conversion Congress and Exposition (ECCE) > 5133 - 5138

2017 IEEE Energy Conversion Congress and Exposition (ECCE)

This paper presents a detection method of small-foreign-metal particles using a 400 kHz silicon-carbide (SiC)-metal-oxide-semiconductor field-effect-transistors (MOSFETs) high-frequency inverter. A 400 kHz SiC-MOSFETs high-frequency inverter is developed and applied to small-foreign-metal particles detection on high-performance chemical films (HPCFs). A new placement of induction heating (IH) coils,...

chapter

Designing an annotation scheme for summarizing Japanese judgment documents

Hiroaki Yamada, Simone Teufel, Takenobu Tokunaga

2017 9th International Conference on Knowledge and Systems Engineering (KSE) > 275 - 280

2017 9th International Conference on Knowledge and Systems Engineering (KSE)

We propose an annotation scheme for the summarization of Japanese judgment documents. This paper reports the details of the development of our annotation scheme for this task. We also conduct a human study where we compare the annotation of independent annotators. The end goal of our work is summarization, and our categories and the link system is a consequence of this. We propose three types of generic...

chapter

Reducing capacitances of DC capacitors in smart charger for electric vehicles in single-phase three-wire distribution feeders with sinusoidal charging and discharging for Li-ion batteries

Yuki Okamoto, Fuka Ikeda, Kei Nishikawa, Hiroaki Yamada, more

2017 IEEE 6th Global Conference on Consumer Electronics (GCCE) > 1 - 2

2017 IEEE 6th Global Conference on Consumer Electronics (GCCE)

This paper discusses reduction of capacitances of dc capacitors in the previously proposed smart charger (SC) with a sinusoidal charging-discharging lithium-ion battery for electric vehicles in single-phase three-wire distribution feeders. The dc-capacitor current of the three-leg pulse-width modulated (PWM) rectifier, which is included in the SC, is detected, and then added to the reference value...

chapter

LED current control method of dimmable LED driver with dual active bridge DC-DC converter for 1kW-class LED floodlight

Hisahiro Yamanaka, Hiroaki Yamada, Toshihiko Tanaka, Masayuki Okamoto

2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) > 2123 - 2128

2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)

This paper proposes LED current control method of dimmable LED driver with dual active bridge (DAB) DC-DC converter for 1kW-class LED floodlight. The LED current control method is discussed in detail. The conventional LED driver cannot control turn-off time of LED current because the power flows from source side to LED floodlight side only. DAB converter is a bidirectional DC-DC converter formed by...

chapter

Compensation performance of smart charger with constant dc-capacitor voltage-control-based strategy for electric vehicles in single-phase three-wire distribution feeders under distorted source voltage conditions

Fuka Ikeda, Kei Nishikawa, Hiroaki Yamada, Toshihiko Tanaka, more

2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) > 828 - 833

2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)

This paper addresses compensation performance of the constant dc-capacitor voltage-control (CDCVC)-based strategy for smart charger with the previously proposed reactive power control algorithm in single-phase three-wire distribution feeders (SPTWDFs) under distorted source voltage conditions. The instantaneous power flows into the smart charger is discussed in detail. This instantaneous power flowing...

chapter

High-frequency induction heating for small-foreign-metal particles Using SiC-MOSFETs inverter

Takuya Shijo, Shinya Kurachi, Yuki Uchino, Yujiro Noda, more

2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) > 615 - 620

2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)

This paper presents a detection method of small-foreign-metal particles using a 400 kHz SiC-MOSFETs high-frequency inverter. A 400 kHz SiC-MOSFETs high-frequency inverter is developed and applied to the small-foreign-metal particles detection on high-performance chemical films (HPCFs). HPCFs are manufactured with continuous production lines in industries. A new arrangement of IH coils are proposed,...

article

A Multicenter, Open-Label, Randomized Trial of Vonoprazan Versus PPI Based 7-Day Triple Therapy for the First-Line Treatment of Helicobacter Pylori Infection

Soichiro Sue, Hirohumi Kuwashima, Isao Arima, Marina Ogushi, more

Gastroenterology > 2017 > 152 > 5(S1) > S250

chapter

An inrush current suppressor for squirrel-cage induction machines with phase-leading capacitors using a matrix converter in a large-capacity wind power generation system

Sho Shibata, Hiroaki Yamada, Toshihiko Tanaka, Masayuki Okamoto

2016 19th International Conference on Electrical Machines and Systems (ICEMS) > 1 - 6

2016 19th International Conference on Electrical Machines and Systems (ICEMS)

This paper proposes an inrush current suppressor for a squirrel-cage induction machine (SCIM) with phase-leading capacitors using a matrix converter (MC) in a large-capacity wind power generation system (WPGS). The reference output voltage of the MC is determined by multiplying the SCIM current with the variable control gain. Thus, the MC performs as resistors for the inrush current of an SCIM with...

chapter

Experimental verification of cooperative control method for 400-W class LED driver with wide dimming range

Yuta Katamoto, Hiroaki Yamada, Toshihiko Tanaka, Masayuki Okamoto, more

2016 19th International Conference on Electrical Machines and Systems (ICEMS) > 1 - 6

2016 19th International Conference on Electrical Machines and Systems (ICEMS)

This paper proposes a new cooperative-control strategy for a 400-W class light-emitting diode (LED) driver consisting of two DC/DC converters operating in the discontinuous current mode (DCM). In the cooperative control method, one DC/DC converter is selected to supply the output current for the LED, based on the reference value of the LED current. Thus, the proposed cooperative-control strategy achieves...

chapter

A 400 kHz SiC-MOSFETs high-frequency inverter for small-foreign-metal particle detection

Takuya Shijo, Shinya Kurachi, Yujiro Noda, Hiroaki Yamada, more

2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) > 1 - 5

2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)

This paper presents the detection of small-foreign-metal particles using a 400 kHz SiC-MOSFETs high-frequency inverter. A 400 kHz SiC-MOSFETs high-frequency inverter is constructed and tested, and then applied to the small-foreign-metal particles detection on high-performance chemical films (HPCFs) with induction heating (IH). Experimental results demonstrate that the developed 400 kHz SiC-MOSFETs...

chapter

Improvement of harmonics compensation performance of smart charger with constant DC-capacitor voltage control for electric vehicles in single-phase three-wire distribution feeders

Kei Nishikawa, Fuka Ikeda, Hiroaki Yamada, Toshihiko Tanaka, more

2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC) > 1 - 6

2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC)

This paper presents an improvement in the harmonics compensation performance of a previously proposed smart charger (SC) with a constant dc-capacitor voltage-control (CDCVC)-based strategy for electric vehicles (EVs) in single-phase three-wire distribution feeders (SPTWDFs). A current controller of a three-leg pulse-width modulated rectifier with proportional-integral (PI) controllers in d-q coordinates...

chapter

Constant DC-capacitor voltage-control-based strategy for harmonics compensation of smart charger for electric vehicles in single-phase three-wire distribution feeders with reactive power control

Fuka Ikeda, Kei Nishikawa, Hiroaki Yamada, Toshihiko Tanaka, more

2016 IEEE Energy Conversion Congress and Exposition (ECCE) > 1 - 7

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

This paper proposes a novel and simple harmonics compensation strategy that can control the fundamental reactive current in the previously proposed smart charger (SC) for electric vehicles (EVs) in single-phase three-wire distribution feeders (SPTWDFs). The proposed harmonics compensation strategy uses only constant dc-capacitor voltage control (CDCVC), which is typically used in grid-connected pulse-width...

article

Novel Reactive Power Control Strategy Based on Constant DC-Capacitor Voltage Control for Reducing the Capacity of Smart Charger for Electric Vehicles on Single-Phase Three-Wire Distribution Feeders

Hidenori Tanaka, Fuka Ikeda, Toshihiko Tanaka, Hiroaki Yamada, more

IEEE Journal of Emerging and Selected Topics in Power Electronics > 2016 > 4 > 2 > 481 - 488

This paper proposes a novel reactive power control strategy to reduce the capacity of the previously proposed smart charger for electric vehicles (EVs) on single-phase three-wire distribution feeders. The proposed reactive power control strategy is based on the constant dc-capacitor voltage control of the grid-connected pulsewidth-modulated rectifier. Any calculation blocks of the load-side active...

article

Resonant Gate Driver for a Normally ON GaN HEMT

Masayuki Okamoto, Takaharu Ishibashi, Hiroaki Yamada, Toshihiko Tanaka

IEEE Journal of Emerging and Selected Topics in Power Electronics > 2016 > 4 > 3 > 926 - 934

Wide bandgap semiconductors such as silicon carbide and gallium nitride (GaN) are promising materials for next-generation power devices. A normally ON GaN-based high-electron-mobility transistor (GaN HEMT) is fabricated for power electronic converters. However, the power consumption in the previously proposed gate drive circuit increases when the GaN HEMT is used for higher frequency operations; a...

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REACTIVE POWER (13)
PULSE WIDTH MODULATION (12)
VOLTAGE CONTROL (12)
CONSTANT DC-CAPACITOR VOLTAGE CONTROL (11)
SMART CHARGER (9)
INVERTERS (8)
SINGLE-PHASE THREE-WIRE DISTRIBUTION FEEDER (8)
LOCALIZATION (7)
REACTIVE POWER CONTROL (7)
BATTERIES (6)
CAPACITORS (6)
SIMULATION (6)
SINGLE-PHASE D-Q TRANSFORMATION (6)
HARMONIC ANALYSIS (5)
HEATING (5)
SWITCHES (5)
DELOCALIZATION (4)
PHASE LOCKED LOOPS (4)
SINGLE-PHASE PLL CIRCUIT (4)
ACTIVE LOAD BALANCER (3)
CAMERAS (3)
CAPACITANCE (3)
CHEMICAL SHIFT (3)
CORRELATION (3)
DISORDER (3)
GENERATORS (3)
HIGH PRESSURE (3)
HIGH-FREQUENCY INVERTER (3)
HIGH-PRESSURE NMR (3)
INDUCTION HEATING (3)
IP NETWORKS (3)
MAGNETIC CORES (3)
NMR (3)
SURGES (3)
THREE-LEG INVERTER (3)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 72.15.RN (3)
CHAOS (2)
COILS (2)
COMPRESSIBILITY (2)
CONFORMATIONAL FLUCTUATION (2)
CONSTANT DC-CAPACITOR VOLTAGE-CONTROL-BASED STRATEGY (2)
DC-DC POWER CONVERTERS (2)
DELAYS (2)
DISTORTED SOURCE VOLTAGE (2)
DOUBLE-WELL (2)
EDUCATIONAL INSTITUTIONS (2)
ENERGY HARVESTING (2)
FEEDBACK CONTROL (2)
GALLIUM NITRIDE (2)
HEATING SYSTEMS (2)
HEMTS (2)
HOME APPLIANCES (2)
HYDROGEN BOND (2)
INDUCTANCE (2)
INDUCTORS (2)
LIGHT EMITTING DIODES (2)
LOAD MODELING (2)
LOGIC GATES (2)
MATRIX CONVERTER (2)
MATRIX CONVERTERS (2)
METALS (2)
POWER ELECTRONICS (2)
POWER QUALITY (2)
PRESSURE (2)
QUANTUM (2)
QUANTUM DIFFUSION (2)
RESONANCE (2)
SEEBECK EFFECT (2)
SIC-MOSFET (2)
SINGLE-PHASE PHASE-LOCKED LOOP CIRCUIT (2)
TEMPERATURE (2)
THERMOELECTRIC GENERATOR (2)
THREE-LEG PWM RECTIFIER (2)
THREE-PHASE FOUR-WIRE DISTRIBUTION FEEDERS (2)
TUNNELING (2)
WIND POWER GENERATION (2)
WIND POWER GENERATION SYSTEM (2)
WIRES (2)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.45.-A (2)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 71.55.JV (2)
1 5 N SPIN RELAXATION (1)
13.56-MHZ RF AMPLIFIER (1)
ADVANCED GLYCATION END PRODUCTS (1)
ADVERSE DRUG EVENT (1)
ALPHA-HELIX (1)
ANALGESIA (1)
ARGUMENTATION STRUCTURE (1)
AUTOMOBILE EMISSION (1)
BACTERIORHODOPSIN (1)
BACTEROIDES (1)
BASIC PANCREATIC TRYPSIN INHIBITOR (1)
BERNOULLI MAP (1)
BIOMATERIALS (1)
CANCER (1)
CELLULOSE ACETATE (1)
CHEMICAL SHIFT ANISOTROPY (CSA) (1)
CHEMICAL SHIFTS (1)
CHOPPERS (1)
CHOPPERS (CIRCUITS) (1)
CLASS-E AMPLIFIE (1)
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Elsevier (32)
ieee (32)
Springer (7)
ACS (3)
Wiley (3)

INFONA - science communication portal

Search results for: Hiroaki Yamada

Analysis of drug adverse events in elderly patients based on the Japanese Adverse Drug Event Report Database

Chemical and microbial characterization for fermentation of water‐soluble cellulose acetate in human stool cultures

Building a corpus of legal argumentation in Japanese judgement documents: towards structure-based summarisation

Correction to: Helicobacter-induced gastric inflammation alters the properties of gastric tissue stem/progenitor cells

Helicobacter-induced gastric inflammation alters the properties of gastric tissue stem/progenitor cells

Harmonics compensation with constant DC-capacitor voltage-control-based strategy of smart charger for electric vehicles in single-phase three-wire distribution feeders under distorted source voltage and load currents conditions

High-frequency induction heating for small-foreign-metal particle detection using 400 kHz SiC-MOSFETs inverter

Designing an annotation scheme for summarizing Japanese judgment documents

Reducing capacitances of DC capacitors in smart charger for electric vehicles in single-phase three-wire distribution feeders with sinusoidal charging and discharging for Li-ion batteries

LED current control method of dimmable LED driver with dual active bridge DC-DC converter for 1kW-class LED floodlight

Compensation performance of smart charger with constant dc-capacitor voltage-control-based strategy for electric vehicles in single-phase three-wire distribution feeders under distorted source voltage conditions

High-frequency induction heating for small-foreign-metal particles Using SiC-MOSFETs inverter

A Multicenter, Open-Label, Randomized Trial of Vonoprazan Versus PPI Based 7-Day Triple Therapy for the First-Line Treatment of Helicobacter Pylori Infection

An inrush current suppressor for squirrel-cage induction machines with phase-leading capacitors using a matrix converter in a large-capacity wind power generation system

Experimental verification of cooperative control method for 400-W class LED driver with wide dimming range

A 400 kHz SiC-MOSFETs high-frequency inverter for small-foreign-metal particle detection

Improvement of harmonics compensation performance of smart charger with constant DC-capacitor voltage control for electric vehicles in single-phase three-wire distribution feeders

Constant DC-capacitor voltage-control-based strategy for harmonics compensation of smart charger for electric vehicles in single-phase three-wire distribution feeders with reactive power control

Novel Reactive Power Control Strategy Based on Constant DC-Capacitor Voltage Control for Reducing the Capacity of Smart Charger for Electric Vehicles on Single-Phase Three-Wire Distribution Feeders

Resonant Gate Driver for a Normally ON GaN HEMT

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