190 Hits in 1.4 sec


2010 Journal of Geography (Chigaku Zasshi)  
doi:10.5026/jgeography.119.556 fatcat:tp7kmemwfzbfnavwz4ebei6n2y

Layered Index-less Indexed Flash Codes for Improving Average Performance [article]

Riki Suzuki, Tadashi Wadayama
2011 arXiv   pre-print
In the present paper, a modification of the Index-less Indexed Flash Codes (ILIFC) for flash memory storage system is presented. Although the ILIFC proposed by Mahdavifar et al. has excellent worst case performance, the ILIFC can be further improved in terms of the average case performance. The proposed scheme, referred to as the layered ILIFC, is based on the ILIFC. However, the primary focus of the present study is the average case performance. The main feature of the proposed scheme is the
more » ... e of the layer-based index coding to represent indices of information bits. The layer index coding promotes the uniform use of cell levels, which leads to better average case performance. Based on experiments, the proposed scheme achieves a larger average number of rewritings than the original ILIFC without loss of worst case performance.
arXiv:1102.3513v1 fatcat:jzlqbps27bbrvhsp57rd735rve

Recent Progress in Mesoscale Climatology

Rikie Suzuki
1996 Geographical review of Japan series B  
The series of studies by Suzuki (1991a Suzuki ( , 1992 Suzuki ( , 1994 attempted to clarify the relationship be tween the surface wind and the synoptic pres sure gradient by processing huge amounts of  ...  Suzuki and Kawamura (1989) and Suzuki (1991 b) demonstrated the seasonality of wind distri bution over central Japan, and showed that the ESB-accompanied wind pattern (see Fig. 1 ) dominates on 63%  ... 
doi:10.4157/grj1984b.69.185 fatcat:n6ozoqkherehjk4rw7pxtbvndy

Natural Forest Biomass Estimation Based on Plantation Information Using PALSAR Data

Ram Avtar, Rikie Suzuki, Haruo Sawada, Shibu Jose
2014 PLoS ONE  
Forests play a vital role in terrestrial carbon cycling; therefore, monitoring forest biomass at local to global scales has become a challenging issue in the context of climate change. In this study, we investigated the backscattering properties of Advanced Land Observing Satellite (ALOS) Phased Array L-band Synthetic Aperture Radar (PALSAR) data in cashew and rubber plantation areas of Cambodia. The PALSAR backscattering coefficient (s 0 ) had different responses in the two plantation types
more » ... ause of differences in biophysical parameters. The PALSAR s 0 showed a higher correlation with fieldbased measurements and lower saturation in cashew plants compared with rubber plants. Multiple linear regression (MLR) models based on field-based biomass of cashew (C-MLR) and rubber (R-MLR) plants with PALSAR s 0 were created. These MLR models were used to estimate natural forest biomass in Cambodia. The cashew plant-based MLR model (C-MLR) produced better results than the rubber plant-based MLR model (R-MLR). The C-MLR-estimated natural forest biomass was validated using forest inventory data for natural forests in Cambodia. The validation results showed a strong correlation (R 2 = 0.64) between C-MLR-estimated natural forest biomass and field-based biomass, with RMSE = 23.2 Mg/ha in deciduous forests. In high-biomass regions, such as dense evergreen forests, this model had a weaker correlation because of the high biomass and the multiple-story tree structure of evergreen forests, which caused saturation of the PALSAR signal.
doi:10.1371/journal.pone.0086121 pmid:24465908 pmcid:PMC3897644 fatcat:arx7igavrbai3mrmfmyeji73ze

High-Resolution Microfluidic Paper-Based Analytical Devices for Sub-Microliter Sample Analysis

Keisuke Tenda, Riki Ota, Kentaro Yamada, Terence Henares, Koji Suzuki, Daniel Citterio
2016 Micromachines  
This work demonstrates the fabrication of microfluidic paper-based analytical devices (µPADs) suitable for the analysis of sub-microliter sample volumes. The wax-printing approach widely used for the patterning of paper substrates has been adapted to obtain high-resolution microfluidic structures patterned in filter paper. This has been achieved by replacing the hot plate heating method conventionally used to melt printed wax features into paper by simple hot lamination. This patterning
more » ... e, in combination with the consideration of device geometry and the influence of cellulose fiber direction in filter paper, led to a model µPAD design with four microfluidic channels that can be filled with as low as 0.5 µL of liquid. Finally, the application to a colorimetric model assay targeting total protein concentrations is shown. Calibration curves for human serum albumin (HSA) were recorded from sub-microliter samples (0.8 µL), with tolerance against˘0.1 µL variations in the applied liquid volume.
doi:10.3390/mi7050080 pmid:30404255 pmcid:PMC6189915 fatcat:tqa3k3ezlncfzc5jhkzkt64inq

An Overview: Special Issue on "Urban Climate"

2011 Journal of Geography (Chigaku Zasshi)  
This special issue brings together the latest scientific papers on the urban climate including urban heat islands (UHI) , which have been researched by urban climatologists in Japan. However a large number of papers have been published mainly by urban technology researchers in the fields of architecture and civil engineering for the purpose of contributing to the mitigation strategies for urban heat islands promoted by central and local governments. The reason for this is explained by
more » ... s in research motivations and methodologies between scientists and technologists. Most urban climatologists are interested in the phenomena themselves and in the mechanisms of urban climates, such as observed and simulated temperature patterns in large cities and their formation mechanisms in terms of surface energy balance systems. On the other hand, urban technology researchers are mostly interested in technological developments and innovations that can be applied in mitigation strategies such as roof-top gardens and water retainable road materials, which could efficiently decrease surface temperatures on hot summer days. Both approaches are required to mitigate urban heat islands in large cities, where heat stress patients due to extremely high temperatures in summer are increasing and local torrential rainfalls triggered by summer heat islands are occurring more frequently than before. The papers included in this special issue are summarized as follows: Nakagawa (2011) reviews trends in studies on the formation mechanism of the urban heat island in Japan with special emphasis on the relationships between urban heat island intensity (UHI) and boundary layers of urban areas. Kusaka (2011) reviews urban climate studies using the Weather Research and Forecasting (WRF) model with a brief description of WRF and three urban parameterization schemes in WRF. Watarai et al. (2011) present a numerical simulation of the rapid rise of the surface air temperature in the Northwestern Kanto Plain on 20 February, 2009 using the WRF model. The results show that the temperature rise was mainly brought about by a downward wind with adiabatic heating over the area. Akasaka et al. (2011) describe a high-spatial density meteorological observation system in Tokyo named METROS, and clarify temporal and spatial characteristics of the thermal environment of Tokyo based on METROS. Mikami et al. (2011) briefly introduce high-resolution temperature ob-
doi:10.5026/jgeography.120.249 fatcat:zhgt426gabgqzgcwy25mgvjygy

Preface for the Special Issue on "Urban Climate"

2011 Journal of Geography (Chigaku Zasshi)  
., Nakamura, Y. and Suzuki, H. (2011) : Journal of Geography (Chigaku Zasshi) , 120, 359-381.]  ... 
doi:10.5026/jgeography.120.252 fatcat:4wemsx2isvdwbppt4bbrrk3jii

Quantitative evaluation of analyte transport on microfluidic paper-based analytical devices (μPADs)

Riki Ota, Kentaro Yamada, Koji Suzuki, Daniel Citterio
2018 The Analyst  
This work quantitatively evaluates the transport efficiency of analytical target compounds on microfluidic paper-based analytical devices by means of colorimetry and absorption spectrometry.
doi:10.1039/c7an01702b pmid:29185559 fatcat:4ac6kzejdrdodomv4yawyehx2a

JAMSTEC-IARC international collaboration enhancing understanding of the Arctic climate system

Larry D. Hinzman, Tetsuo Ohata, Igor V. Polyakov, Rikie Suzuki, John E. Walsh
2013 Polar Science  
Suzuki et al. (2013) present results of the Advanced Land Observing Satellite (ALOS)/Phased-array-type L-band SAR (PALSAR) data to extract information on important vegetation characteristics including  ... 
doi:10.1016/j.polar.2013.05.001 fatcat:kfd4ibxz4re3lfrxo55slxetvu

A Comparison of the Ice Cap of Kilimanjaro in January 1996 and January 2009

2010 Journal of Geography (Chigaku Zasshi)  
(Shuji YAMAKAWA and Rikie SUZUKI) 岩田修二・小森次郎(2010) : 最近の山岳氷河変動の意味するもの -消滅する氷河と拡大する氷河湖 -.遠藤邦彦・山川修治・藁谷哲也編: 極圏・雪氷圏と地球環境.二宮書店 52-78. Thompson, L.G., Davis, M.E.  ... 
doi:10.5026/jgeography.119.cover03_2 fatcat:cyw7y5fabbam5ilp5aroltkpgy

Review: advances in in situ and satellite phenological observations in Japan

Shin Nagai, Kenlo Nishida Nasahara, Tomoharu Inoue, Taku M. Saitoh, Rikie Suzuki
2015 International journal of biometeorology  
Japan stretches more than 3000 km, from 45°N to 20°N and from 123°E to 154°E, and comprises nine climatic divisions (Suzuki 1962) .  ...  Suzuki (2015) noted that many previous studies of remote-sensing data were mainly from a technical perspective and that the ecological meaning By the Phenological Eyes Network (Nasahara and Nagai 2015  ... 
doi:10.1007/s00484-015-1053-3 pmid:26307639 pmcid:PMC4821867 fatcat:t4lzwur4hfccfb45n6nnaw4cgu

Relationships between meridional profiles of satellite-derived vegetation index (NDVI) and climate over Siberia

Rikie Suzuki, Sugumi Tanaka, Tetsuzo Yasunari
2000 International Journal of Climatology  
Suzuki et al., 1998) . As a part of the GEWEX Asian Monsoon Experiment (GAME), an international project under the Global Energy and Water Cycle Experiment (GEWEX).  ... 
doi:10.1002/1097-0088(200007)20:9<955::aid-joc512>;2-1 fatcat:c466mrdqkzhvrjbfzf56ioe6dq

Temperature Inversion Layers in the Atmospheric Layer up to 300hPa over Japan

1995 Geographical Review of Japan  
doi:10.4157/grj1984a.68.12_779 fatcat:hxin34ggyzdkfau5e2vqyxrcni

Principles of Aggregation‐Induced Emission: Design of Deactivation Pathways for Advanced AIEgens and Applications

Satoshi Suzuki, Shunsuke Sasaki, Amir Sharidan Sairi, Riki Iwai, Ben Zhong Tang, Gen-ichi Konishi
2020 Angewandte Chemie  
Structure of the CI Compound Double bond torsion TPE,DPDBF, Distyreneanthracene, HBDI, HBT Ring puckering Tetraphenylsilole, BDAA, cyclooctatetrathiophene Ring opening/closing TPE Satoshi Suzuki  ... 
doi:10.1002/ange.202000940 fatcat:yvjaph7bhrctpd52eif6jppl5u

Spatial distribution and its seasonality of satellite-derived vegetation index (NDVI) and climate in Siberia

Rikie Suzuki, Tomoyuki Nomaki, Tetsuzo Yasunari
2001 International Journal of Climatology  
The 611 GDS surface meteorological stations used in the analysis are indicated by dots (modified with permission from Suzuki et al., 2000) Plate 2.  ...  Suzuki et al. (1997) analysed this regional feature of the NDVI seasonal cycle and suggested that it was related to relatively high precipitation and winter temperatures.  ...  Suzuki et al., 1998) . The vegetation data should give proxy information on transpiration from the ground so that this study will improve understanding of the water cycle over an extensive area.  ... 
doi:10.1002/joc.653 fatcat:jlnbh452p5gvrp6kbq55rm46wm
« Previous Showing results 1 — 15 out of 190 results