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Facile Formation of a Benzopyrane-Fused [28]Hexaphyrin That Exhibits Distinct Möbius Aromaticity
Tokuji, Sumito,Shin, Jae-Yoon,Kim, Kil Suk,Lim, Jong Min,Youfu, Katsuyuki,Saito, Shohei,Kim, Dongho,Osuka, Atsuhiro American Chemical Society 2009 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.131 No.21
<P>A benzopyrane-fused [28]hexaphyrin, 2, was prepared by simple heating of [26]hexaphyrin 1 in acetic acid. Fused [28]hexaphyrin 2 features a molecular twist, a distinct diatropic ring current, a large HOMA value, a large negative NICS value, and a large two-photon absorption (TPA) cross section even at room temperature, all of which support the Möbius aromaticity of 2. To the best of our knowledge, 2 is the first macrocycle that acquires distinct Möbius aromaticity without any assistance from metal coordination, temperature control, or protonation.</P>
Tokuji Hayashi,Asuka Ichihara,Maki Kurokawa 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
This program focuses on comprehensive development in logical thinking ability, assertiveness, self-expression in communication skills. This training is to develop capability to build human relationships at work. The goal is to develop the following capabilities: speaking coherently, thinking and talking from the other person’s viewpoint, appropriate assertiveness, and conveyance of information in various ways. This training program model is based on Instructional System Development (ISD). We ran the workshops a total of 16 times, each for 3 hours. We divided participants into 5-8 members per group and gave them tasks. Participants filled out self-evaluation form once before the workshop and again after workshop. The training program model includes 3 items: “Compulsory Linkage” and “logic tree” for logical thinking training, “Micro Presentation” for communication training, “Assertion” for improve appropriate assertiveness. Compared to the pre-evaluation, the results of the post-evaluation showed improvement in all aspects of communication skills mentioned above.
Abeer Mahmoud,Tokuji OKADA,Wagner Tanaka Botelho 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
PEOPLER-II is a hybrid robot with 8-leg ends and 4-wheels attached to a knee joint rim rotating around a hip joint. It has been developed to assist people who needs enhancement for their capability of locomotion. In order to cope with different environments, investigation of the robot trajectory is of significant importance while africtional condition of the surface influences the form of trajectory. Therefore, this paper extends a C++ objectoriented simulator based on mathematical expression for estimating energy cost of motion utilizing the Principle of Virtual Work to the wheeled locomotion mode of the PEOPLER-II. We clarify the robot trajectory form of turning and spinning. Actually, we demonstrate the simulated trajectories on flat surfaces. In addition, we show the effect of theve locity ratio between right and left side wheels on the trajectory forms as well as the inclination angle of the surface.
Fumiko Inoue,Tokuji Hayashi 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
The e-learning programs at the Suratthani Rajabhat University were established three years ago. The various programs provide students to enhance their capabilities. About two thousand students and almost two hundred teachers are registered in this program so far. In this article, we report the present condition and administrative issues of the e-learning programs.
Development of an ICT training model for in-service teachers in Nicaraguan schools
Jader Rodriguez,Tokuji Hayashi 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
The Integration of ICT in Education is becoming necessary for the future development of each country. However integrating ICT is not a simple task and requires commitment, collaboration and resources. Nicaragua, despite the important and difficult problems in its educational system, is in the process to integrate ICT in education with the hope to keep pace to the new knowledge based economy and to improve education quality. In order to succeed in Integrating ICT in Education, the creation of an ICT training model for in-service teachers in Nicaragua might be needed and beneficial in order to optimize time and resources.
Rath, Harapriya,Tokuji, Sumito,Aratani, Naoki,Furukawa, Ko,Lim, Jong Min,Kim, Dongho,Shinokubo, Hiroshi,Osuka, Atsuhiro WILEY-VCH Verlag 2010 Angewandte Chemie Vol.122 No.8
<B>Graphic Abstract</B> <P>Ein neuer Dreh bei Porphyrinen: Die Metallierung von Möbius-aromatischem Hexakis(pentafluorphenyl)[28]hexaphyrin ergibt ein stabiles organisches Radikal, das über ein zweifach verdrehtes π-System delokalisiert ist. Der Zweiphotonenabsorptionsquerschnitt ist deutlich höher als bei nichtaromatischen expandierten Porphyrinen (Pd rosa, Cl grün, N blau; ohne Phenylringe). <img src='wiley_img/00448249-2010-122-8-ANGE200906017-content.gif' alt='wiley_img/00448249-2010-122-8-ANGE200906017-content'> </P>