http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Oxidation Behavior of WC-TiC-TaC Binderless Cemented Carbide under Low Partial Pressure of Oxygen
Uchiyama Yasuo,Ueno Shuji,Sano Hideaki,Tanaka Hiroki,Nakahara Kenji,Sakaguchi Shigeya,Nakano Osamu 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
WC-TiC-TaC binderless cemented carbide was oxidized under low partial pressure of oxygen (50ppm) at 873K for 1 to 20 h. Surface roughness was measured using atomic force microscope, and effect of TiC amount on oxidation behavior of the carbide was investigated. WC phase was oxidized more easily than WC-TiC-TaC solid solution phase. With an increase in TiC amount, WC-TiC-TaC phase increased and the oxidation resistance of the carbide increased.
Recent problems in hygienic chemistry
Uchiyama, Mitsuru The Pharmaceutical Society of Korea 1981 Archives of Pharmacal Research Vol.4 No.1
Hygienic Science is the science for the maintenance and the improvement of human health. Every investigation of hygienic science is originated from practical human life and the fruits of every studies should be recovered and utilized finally by social life. The planning, implementation, evaluation must be carried out by unbiased idea in view of four main aspects in Fig. 1. In the center of that figure you can put any problems that you concern if it is related to health sciences. Today. I want to mention the problem in food and environmental contaminants, referring to some recent status of may country.
Solar Power Generation for Compact Hydroponic Plant Cultivation System
Ryo UCHIYAMA,Satoru YAMAGUCHI,Yoshihiko TAKAHASHI 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
In light of recent trends related to global population growth and climate change, our team took on a task of developing a compact hydroponic plant cultivation system in order to provide a stable food supply. The system we are developing uses sustainable energy and does not rely on traditional methods of fossil fuel power. With our system, plants grow utilizing sunlight and when it becomes unavailable, conserved energy stored on-site is used to assist plant growth with an LED lighting system. Energy conservation patterns and amounts are calculated by assessing meteorological data by obtaining data from JMA (Japan Meteorological Agency). In this paper the process of estimating the appropriate amounts of conserved energy using weather data, data obtained from solar power generation experiments, assessment of weather forecast reliability and compatibility with solar power generation results are described.
Robust Reinforcement Learning Control System with H<SUB>∞</SUB> Tracking Performance Compensator
Shogo Uchiyama,Masanao Obayashi,Takashi Kuremoto,Kunikazu Kobayashi 제어로봇시스템학회 2011 제어로봇시스템학회 국제학술대회 논문집 Vol.2011 No.10
Robust control theory generally guarantees robustness and stability of the closed-loop system, however it requires mathematical model of the system to design the control system. Therefore, it can’t often deal with nonlinear systems because of difficulty of modeling of the system. Other, reinforcement learning method can deal with the nonlinear system without mathematical model, however, it usually doesn’t guarantee the stability of control. In this paper, we propose a “Robust Reinforcement Learning Control System (RRLCS)“ through combining reinforcement learning to treat unknown nonlinear systems and using robust control theory to guarantee the robustness and stability of the system. As a robust control method, we adopt H∞ control which is robust to modelling error and disturbance. On the other hand, as a reinforcement learning method, we adopt an Actor-Critic method with minimal amount of computation for the continuous action and state space. Moreover, we analyze the stability of the proposed system using H∞ tracking performance and Lyapunov function. Finally, through the computer simulation for controlling the inverted pendulum system, we show the effectiveness of the proposed method comparing with an Adaptive Fuzzy Control method with H∞ tracking performance compensator (AFC) and an Auto-Structuring Fuzzy Neural Control System method (ASFNCS).
Tradition and Japanese vegetables: history, locality, geography, and discursive ambiguity
Yuta Uchiyama,Yoshinori Fujihira,Hikaru Matsuoka,Ryo Kohsaka 한국식품연구원 2017 Journal of Ethnic Foods Vol.4 No.3
Background: Traditional vegetables are produced and consumed throughout Japan. Individual vegetables, including Kyo vegetables and Kaga vegetables, are individually defined with their own criteria for history and quality standards and are registered in their respective regions. Several traditional vegetables are utilized as symbols of regional revitalization. For example, Kaga vegetables are tourist attractions, and Noto vegetables are promoted in the Noto region and were registered under the Globally Important Agricultural Heritage Systems (GIAHS). Methods: We will review the distribution, public standards, and definitions of dento-yasai, traditional Japanese vegetables. Quantitative analysis on the status of the branding of traditional vegetables will be conducted. Results: First, the ambiguity and distribution of traditional vegetables are demonstrated. Next, as a case study, the results of a quantitative analysis of Kaga vegetables and Noto vegetables are provided. Kaga vegetables have their own quality standards and definition, and producers have acknowledged the positive impact of the regional certification, GIAHS, on the amount sold. However, a social conflict has been caused by their standards and definition. On the other hand, Noto vegetables do not have a strict quality standard, and they were registered relatively recently. Because of their comparatively lax standard, producers could not acknowledge the positive impacts of GIAHS certification. Conclusion: Origins of traditional Japanese vegetables and relationships with their regions have innumerable ambiguous points. The results of the analysis of two types of traditional vegetables show that quality standards and definitions strongly influence branding and brand management.