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( Masahiro Oguchi ),( Atsushi Terazono ),( Tatsuya Hanaoka ),( Tomohiro Tasaki ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 3RINCs초록집 Vol.2015 No.-
End-of-life (EoL) consumer durables such as WEEE and ELVs have been an emerging issue in recent years. As a basis for planning the appropriate waste management scheme in Asian region, accurate estimation of future EoL generation is required. This study modeled the trend in in-use stocks of consumer durables in order to obtain basic data for estimating future EoL generation in Asian developing countries. We analyzed the data of passenger cars and several types of appliances for 60 countries including 26 non-OECD Asian countries. The number of in-use products per capita had a strong correlation with GDP per capita for each country. The slope was, however, different between countries, indicating other factors also affect the number of in-use products. We thus developed multiple linear regression models for the number of in-use products by using various socioeconomic indicators as explanatory variables. Since the trends in the number of in-use products were also different between countries’ economic development, the models were constructed for four groups of countries with different levels of GDP per capita. The developed multiple regression models showed good prediction of the number of in-use products for the target items.
Real-time Monitoring System for Container Networks in the Era of Microservices
Naoki Oguchi,Yosuke Takano,Reiko Kondo,Masaaki Noro,Takashi Shiraishi 한국통신학회 2020 한국통신학회 APNOMS Vol.2020 No.09
Large-scale web services are increasingly adopting the microservice architecture that mainly utilizes container technologies. Microservices are operated on complex configured infrastructures, such as containers, virtual machines, and physical machines. To ensure service quality of microservices, it is important to monitor not only the quality of services but also the quality of the infrastructures utilized by the services. Therefore, the metrics of the infrastructure related with the services should be traced. An extended Berkeley Packet Filter (eBPF) is a relatively new Linux’s function, which is effectively used as a sensor of container-network metrics. There are two key challenges in realizing the service-linked monitoring system. One challenge is making the full-stack topology between microservices, containers, and machines visible to set the sensor related with the services. Another challenge is dynamic sensor management that can relocate the sensor quickly after the topology’s change. In this paper, we propose a real-time monitoring system that creates a full-stack topology and relocates the sensor in conjunction with events from a container orchestrator. The system enables a dynamic deployment of the sensors related with the monitored services.
An evaluation study on advanced public transport priority system using traffic simulation
Takashi Oguchi,Akira Mitsuyasu,Daisuke Oshima,Takane Imagawa 서울시립대학교 도시과학연구원 2017 도시과학국제저널 Vol.21 No.2
For the reasons of environmental issues, congestion mitigation, and vulnerable road users, the surface mass public transport (PT) system in urban area should be improved and promoted in Japan. This paper provides an overview of the current state of public transport priority system (PTPS) and the possibility of advanced PTPS. The effects of advanced PTPS by microscopic traffic simulation are estimated. As a result, it is found that advanced PTPS improves time reliability and transportability of buses, even if a congestion around an intersection occurs. The introduction of combination of bus lane and advanced PTPS improves time reliability and the transportability more. On the other hand, the introduction of bus lane reduces the acceptable volume of other vehicles because of reduction in the number of lanes for them. It is considered that the other users are also expected to shift to PT along with the PT level of service improvement.
( Atsushi Terazono ),( Masahiro Oguchi ) 한국폐기물자원순환학회 2022 ISSE 초록집 Vol.2022 No.-
At the Basel Convention Conference of the Parties (COP14) held in 2019, it was decided to revise the Annex to the Convention to add waste plastics to the new regulatory scope of the Convention. In response to this decision, the Basel Act Ministerial Ordinance was amended in Japan to establish criteria for determining which plastics are subject to regulation, and these criteria have been in effect since January 2021. Prior to this, the export of waste plastics from Japan continued to decline due to China's tightening of import regulations starting in 2018, and the export amount in 2021 was 620,000 tons, mainly destined for Southeast Asia. On the other hand, due to the limited demand for recycled plastic materials in Japan, the disposal and recycling of waste plastic in Japan still relies mainly on incineration and heat recovery. In the latter half of this presentation, a case study of disposal/recycling scenarios for plastics derived from home appliances and other small appliances in Japan will be introduced. There, the state of plastic material cycles in Japan and abroad will be discussed, including the management of brominated flame retardants (BFRs).
Sergey V. Mikhailenko,Yusuke Oguchi,Togo Shimozawa,Takashi Ohki,Adrian O. Olivares,Enrique M. De La Cruz,Shinichi Ishiwata 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.3
The interaction between actin and myosin V has been probed by measuring the unbinding force of individual actomyosin complexes using optical tweezers. Surprisingly, we found that in both the nucleotide-free and ADP-bound states single- and double-headed binding occurs with approximately the same probability. Estimation of the spring constant of individual actomyosin complexes confirmed that in each of the nucleotide states two distinct populations exist. These results confirm that optical nanometry can be used to reliably study the mechanism of how cytoskeleton molecular motors interact with their associated polymer lattices under solution conditions more closely resembling the intracellular environment.