Search Results - "Doi, Ryoichi"

Are New Residential Areas Cooler than Older Ones? by Doi, Ryoichi

“…This study was conducted to investigate if passive cooling technologies have been implemented in commercially supplied new residential areas in Bangkok and to…”
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Assessing the reforestation effects of plantation plots in the Thai savanna based on 45 cm resolution true-color images and machine learning by Doi, Ryoichi

“…In forest restoration projects, assessing progress is critically important. This study was conducted to quantify the restoration progress for approximately 30…”
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Maximizing the Accuracy of Continuous Quantification Measures Using Discrete PackTest Products with Deep Learning and Pseudocolor Imaging by Doi, Ryoichi

“…Using the standard colors provided in the instructions, PackTest products can approximate and quickly estimate the chemical characteristics of liquid samples…”
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Quantification of leaf greenness and leaf spectral profile in plant diagnosis using an optical scanner by Doi, Ryoichi

“…Observation of leaf spectral profile (color) enables suitable management measures to be taken for crop production. An optical scanner was used: 1) to obtain an…”
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From Maximization to Optimization: A Paradigm Shift in Rice Production in Thailand to Improve Overall Quality of Life of Stakeholders by Doi, Ryoichi, Pitiwut, Supachai

“…The concept of crop yield maximization has been widely supported. In practice, however, yield maximization does not necessarily lead to maximum socioeconomic…”
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Correlations between soil microbial and physicochemical variations in a rice paddy: implications for assessing soil health by Doi, Ryoichi, Ranamukhaarachchi, Senaratne Leelananda

“…This study was conducted to test the hypothesis that spatial variations in soil microbial variables in a Thai rice paddy are accurately described by…”
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Pixel Color Clustering of Multi-Temporally Acquired Digital Photographs of a Rice Canopy by Luminosity-Normalization and Pseudo-Red-Green-Blue Color Imaging by Mizoguchi, Masaru, Setiawan, Budi Indra, Arif, Chusnul, Doi, Ryoichi

“…Red-green-blue (RGB) channels of RGB digital photographs were loaded with luminosity-adjusted R, G, and completely white grayscale images, respectively (RGwhtB…”
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Semiquantitative color profiling of soils over a land degradation gradient in Sakaerat, Thailand by Doi, Ryoichi, Wachrinrat, Chongrak, Teejuntuk, Sakhan, Sakurai, Katsutoshi, Sahunalu, Pongsak

“…In this study, we attempted multivariate color profiling of soils over a land degradation gradient represented by dry evergreen forest (original vegetation),…”
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Behavior of Cool and Hot/Warm Air Plumes in Tokyo Revealed by Artificial Intelligence by Doi, Ryoichi

“…The primary objective of this study was to visualize cool air plumes generated in and coming from urban green areas. Differences in air temperature at…”
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Hue‐shifting for accurate and precise quantification of biochemical substances using diagnostic test strips by Doi, Ryoichi

“…Some test strips have high feasibility for the quick and approximate quantification of the biochemical substances in samples. Recently, test strips became more…”
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Synergistic Effects of Pseudocolor Imaging, Differentiation, and Square and Logarithmic Conversion on Accuracy of Quantification of Chemical Characteristics Using Test Strips and Similar Products by Doi, Ryoichi

“…Test strips and similar products are highly feasible tools for the rapid and approximate determination of chemical characteristics. Although the application of…”
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Soil dehydrogenase in a land degradation-rehabilitation gradient: observations from a savanna site with a wet/dry seasonal cycle by Doi, Ryoichi, Ranamukhaarachchi, Senaratne Leelananda

“…Soil dehydrogenase activity is a good indicator of overall microbial activity in soil, and it can serve as a good indicator of soil condition. However,…”
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Red-and-green-based pseudo-RGB color models for the comparison of digital images acquired under different brightness levels by Doi, Ryoichi

“…Digital images of crops and other plants are useful in plant management although the brightness of digital images varies with time. Brightness adjustment of…”
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Effects of air-drying soils on discriminating the soils with community-level physiological profiling by Doi, Ryoichi

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Principal components derived from soil physicochemical data explained a land degradation gradient, and suggested the applicability of new indexes for estimation of soil productivity in the Sakaerat Environmental Research Station, Thailand by Doi, Ryoichi, Sakurai, Katsutoshi

“…To find a principal component (PC) that quantifies the degree of soil degradation, we analyzed various physicochemical characteristics of soils over a land…”
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Improved discrimination among similar agricultural plots using red-and-green-based pseudo-colour imaging by Doi, Ryoichi

“…The effects of a pseudo-colour imaging method were investigated by discriminating among similar agricultural plots in remote sensing images acquired using the…”
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Simple luminosity normalization of greenness, yellowness and redness/greenness for comparison of leaf spectral profiles in multi-temporally acquired remote sensing images by Doi, Ryoichi

“…Observation of leaf colour (spectral profiles) through remote sensing is an effective method of identifying the spatial distribution patterns of abnormalities…”
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Quantification of leaf greenness and leaf spectral profile in plant diagnosis using an optical scanner Quantificação do nível de verde e padrão espectral foliar no diagnóstico de plantas através de um scanner ótico by Ryoichi Doi

“…Observation of leaf spectral profile (color) enables suitable management measures to be taken for crop production. An optical scanner was used: 1) to obtain an…”
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Feasibility of system of rice intensification practices in natural and socioeconomic contexts in Thailand by Doi, Ryoichi, Mizoguchi, Masaru

“…The system of rice intensification (SRI) is a set of practices in rice cultivation known for higher yields, lower water consumption, and environmentally…”
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Correlation of the Initial Bacterial Concentration and Detection Time in Indirect Conductimetric Assay by SAWAI, JUN, DOI, RYOICHI, MAEKAWA, YOSHIKO, YOSHIKAWA, TADASHI, KOJIMA, HIROMITSU

“…The correlation between bacterial concentration and the change in electrical conductivity was investigated for the indirect conductimetric assay which measures…”
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