均 早見 | Keio University (original) (raw)
Papers by 均 早見
E-waste Recycling and Management, 2019
In this chapter, we discuss some of the most important factors, including legal, statistical, eco... more In this chapter, we discuss some of the most important factors, including legal, statistical, economic, and organizational factors, that affect the recycling of waste electrical and electronic equipment or more broadly the recycling of general Electronic-waste in Japan and other countries. In doing so, we emphasize the policy importance of incorporating manufacturing supply chains in the design of environmental management of production systems.
2017 24th International Conference on Mechatronics and Machine Vision in Practice (M2VIP), 2017
This paper focuses on accuracy improvement of human activities detection and classification by us... more This paper focuses on accuracy improvement of human activities detection and classification by using single Inertia Measurement Unit sensor (IMU sensor: an acceleration sensor, a gyro sensor, a magnetometer, and an air pressure sensor) which is a type of the wearable sensors. Generally, performance of classification model is determined by these methodologies; number and type of sensors, coordinate transformation, time window, time-frequency domain analysis, and machine learning algorithms. The contributions of this paper are summarized in the following three points. Firstly, a pressure sensor is additionally utilized to improve the accuracy of human activities estimation. This information is effective to estimate up/down motion by stair and elevator. Secondly, comprehensive evaluation of the combinations using different methodologies is conducted to find an optimal classification model. Thirdly, ensemble learning is performed to improve estimation accuracy. It shows superior perform...
In 2001, a BSE suspected cow found in Chiba Japan. Since then Japan has over 20 heads of cows and... more In 2001, a BSE suspected cow found in Chiba Japan. Since then Japan has over 20 heads of cows and bulls were found to be BSE positive. On the other hand, from 2003, Japan banned all the beef import from the US and Canada. At the almost same time, in 2004 thousands chickens have been infected influenza virus and died in Kyoto but delivered to the market. These two events resulted extreme decreases of final demand from households in short run. This research calculates their effects on domestic production, and shows difference between consumer’s risk perception by intuition and contaminated commodities suggested by input-output calculation. In addition, it will show the timing of delivery lag and quick recovery of the consumption within several months, as a simple application of input-output approaches.
Input-Output Analysis, 1995
Input-Output Analysis, 1994
Input-Output Analysis, 1996
Journal of the Society of Mechanical Engineers, 1995
Input-Output Analysis, 1991
Journal of Technology Innovations in Renewable Energy, 2017
Various alternative renewable energy sources have been proposed and implemented. These energy sou... more Various alternative renewable energy sources have been proposed and implemented. These energy sources, which generally do not rely on fossil fuel, are distinguished from the traditional large scale energy projects in a number of ways. On the other hand, the circumstances surrounding renewable energy sources currently under use are characterized by their small size and scale and their economic impacts are generally local. For example, wind mills based electric power generation uses locally available wind currents and geothermal power generation uses locally available geothermal heat sources. Similarly, solar power generation uses solar power available in the local regions. These imply that the economic impacts of most renewable energy sources currently in use are local. We estimate our model using cross-sectional data of regional economies measured at the prefecture level in Japan. This will allow us to estimate the impacts of certain government policy variables at the regional level as well. One hypothesis we consider in this paper is that while solar power is still negligible in terms of its impact on Japan's national economy, it has some economic impacts on the economies of the regions where they are located.
Sustainable Supply Chain Management, 2016
Using input-output tables and data on wastes from the Japanese industrial sectors, we have provid... more Using input-output tables and data on wastes from the Japanese industrial sectors, we have provided empirical evidence that, in Japan environmental performance of their upstream suppliers contributes positively to the performance of their final product assembly firms or economic sectors. In this paper, we propose to investigate the same hypothesis for firms and other establishments in manufacturing and other sectors in India. Indian supplier firms that sell goods and services to their client assembler firms are not generally structured in the form of efficient supply chains as in advanced economies. So, the environmental performance of these suppliers may not have positive impacts on the performance of their assembler firms or economic sectors, but this is yet to be verified empirically. In our study on Japan, we measured supply chains' environmental performance using various amounts of waste materials and also CO 2-equivalent greenhouse gas emissions generated in their production processes. Unfortunately, the only environmental performance data we have for the Indian economic sectors is their CO 2 emissions. So, we investigate the impact of CO 2 emissions by supplier firms on the economic performance of their assembler firms in India.
Keio Economic Observatory Review, Apr 1, 1996
E-waste Recycling and Management, 2019
In this chapter, we discuss some of the most important factors, including legal, statistical, eco... more In this chapter, we discuss some of the most important factors, including legal, statistical, economic, and organizational factors, that affect the recycling of waste electrical and electronic equipment or more broadly the recycling of general Electronic-waste in Japan and other countries. In doing so, we emphasize the policy importance of incorporating manufacturing supply chains in the design of environmental management of production systems.
2017 24th International Conference on Mechatronics and Machine Vision in Practice (M2VIP), 2017
This paper focuses on accuracy improvement of human activities detection and classification by us... more This paper focuses on accuracy improvement of human activities detection and classification by using single Inertia Measurement Unit sensor (IMU sensor: an acceleration sensor, a gyro sensor, a magnetometer, and an air pressure sensor) which is a type of the wearable sensors. Generally, performance of classification model is determined by these methodologies; number and type of sensors, coordinate transformation, time window, time-frequency domain analysis, and machine learning algorithms. The contributions of this paper are summarized in the following three points. Firstly, a pressure sensor is additionally utilized to improve the accuracy of human activities estimation. This information is effective to estimate up/down motion by stair and elevator. Secondly, comprehensive evaluation of the combinations using different methodologies is conducted to find an optimal classification model. Thirdly, ensemble learning is performed to improve estimation accuracy. It shows superior perform...
In 2001, a BSE suspected cow found in Chiba Japan. Since then Japan has over 20 heads of cows and... more In 2001, a BSE suspected cow found in Chiba Japan. Since then Japan has over 20 heads of cows and bulls were found to be BSE positive. On the other hand, from 2003, Japan banned all the beef import from the US and Canada. At the almost same time, in 2004 thousands chickens have been infected influenza virus and died in Kyoto but delivered to the market. These two events resulted extreme decreases of final demand from households in short run. This research calculates their effects on domestic production, and shows difference between consumer’s risk perception by intuition and contaminated commodities suggested by input-output calculation. In addition, it will show the timing of delivery lag and quick recovery of the consumption within several months, as a simple application of input-output approaches.
Input-Output Analysis, 1995
Input-Output Analysis, 1994
Input-Output Analysis, 1996
Journal of the Society of Mechanical Engineers, 1995
Input-Output Analysis, 1991
Journal of Technology Innovations in Renewable Energy, 2017
Various alternative renewable energy sources have been proposed and implemented. These energy sou... more Various alternative renewable energy sources have been proposed and implemented. These energy sources, which generally do not rely on fossil fuel, are distinguished from the traditional large scale energy projects in a number of ways. On the other hand, the circumstances surrounding renewable energy sources currently under use are characterized by their small size and scale and their economic impacts are generally local. For example, wind mills based electric power generation uses locally available wind currents and geothermal power generation uses locally available geothermal heat sources. Similarly, solar power generation uses solar power available in the local regions. These imply that the economic impacts of most renewable energy sources currently in use are local. We estimate our model using cross-sectional data of regional economies measured at the prefecture level in Japan. This will allow us to estimate the impacts of certain government policy variables at the regional level as well. One hypothesis we consider in this paper is that while solar power is still negligible in terms of its impact on Japan's national economy, it has some economic impacts on the economies of the regions where they are located.
Sustainable Supply Chain Management, 2016
Using input-output tables and data on wastes from the Japanese industrial sectors, we have provid... more Using input-output tables and data on wastes from the Japanese industrial sectors, we have provided empirical evidence that, in Japan environmental performance of their upstream suppliers contributes positively to the performance of their final product assembly firms or economic sectors. In this paper, we propose to investigate the same hypothesis for firms and other establishments in manufacturing and other sectors in India. Indian supplier firms that sell goods and services to their client assembler firms are not generally structured in the form of efficient supply chains as in advanced economies. So, the environmental performance of these suppliers may not have positive impacts on the performance of their assembler firms or economic sectors, but this is yet to be verified empirically. In our study on Japan, we measured supply chains' environmental performance using various amounts of waste materials and also CO 2-equivalent greenhouse gas emissions generated in their production processes. Unfortunately, the only environmental performance data we have for the Indian economic sectors is their CO 2 emissions. So, we investigate the impact of CO 2 emissions by supplier firms on the economic performance of their assembler firms in India.
Keio Economic Observatory Review, Apr 1, 1996