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         今日は !             Welcome !


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My name is  Takashi SAITO.

There are so many Saito(s) in Japan. Both Saito and Takashi are also very common name here. My nickname is Tac and my grandson Yuma calls me Tacjii .


 This illustration by Jim Hummel, an illustrator who is one of my relatives in San Jose, Calif., describes my profile.


I am holding a gardening tool in one hand and a tennis racket in another hand.

I think it was imaged my favorite hobby, gardening and tennis.

I am a warrior's face, Last Samurai (the title of moving picture) and this is a typical appearance of the Japanese really that it is a crotch in short feet. This might be  Takashi Saito from the viewpoint of an American.  




You Raise Me Up

I visited New Zealand for the first time in July 2019.

The light sixseater  airplane took us to the majestic Tasman Glacier of Mt.Cook (3,724m), which was covered by deep snow.  The wheels of the aircraft were installed on skis. We really enjoyed ourselves being there in the silvery mountains.


You raise me up, so I can stand on mountains;  

You raise me up, to walk on stormy seas;  

 When I am down and, oh my soul, so weary;
When troubles come and my heart burdened be;
Then I am still and wait here in the silence,
Until you come and sit awhile with me.


"You Raise Me Up" is a wonderful lyric that gives me courage. 


One of My favorite things is  gardening.

You know the owner’s feeling, when you look at his garden.I am thrilled when I come up with a fresh idea for a small greenery garden  where everyone can relax any time.


I am trying to create a place like the impressionist painter Monet’s garden (French artist) . I like to see small flowers scattered in other various green plants. Some people say my garden is like a tiny Amazon jungle.  My philosophy for the garden is simply the desire to express natural beauty in the limited space.

This is my philosophy and philosophy for nature.


When I walk through the woods, my heart fills with love and I feel genuinely happy. I want to share what I see up here, What I know about nature, but most of all how it makes me feel. 

My very small Hidden Garden Treasures

They say that best things in life are free.
For those of us who see the flowers and are surrounded
by their abundant natural beauty - It really is true !

     Blue marguerite and sweet Alyssum

         My handmade deck and pergola

I have spent more than a few lazy afternoon at my tiny patio.
I could almost reach out and touch my grapes.

Click moving video of my garden.


 I have been enjoying to look at maps since I was very young. While I am traveling ,  it is fun to find the real world is just the simulation of maps.           

 Maps are used as various metaphors and have the role of drawing a strong image of the mind in the human  through metaphor expressions. The map is also an illustration of the thought process. It can be said that it is the one that the idea necessary for the conception, creation, and the problem solving.

     Fujisawa city

I have lived in Fujisawa City in Kanagawa Prefecture with my family. Fujisawa is a city with a population of approximately 430,000, located  50 kilometers from Tokyo.

 Enoshima Island  in Fujisawa City is open countryside to many places from which you can get clear views of Mt. Fuji.



        Mt. Fuji  from the Air  (photo by  Tomio Sakakibara ,    October /23/ 2019

Mt. Fuji is  the highest volcano in Japan at 3,776.24 m (12,389 ft) and is commonly used as a symbol of Japan. Mt. Fuji area has different faces in all four seasons. Every time you visit, you will find a new aspect of Mt. Fuji.

Mr. Sakakibara had a chance to see a panoramic view of Mt. Fuji with fresh snow on his way home from Ireland on October, 2019.


  Short Biography

I was born in Qingdao, China on September 6, 1942 and raised in north part of Japan. My father Tomuji Kamegai was a pharmacists who worked for a pharmacy company of Japan. He was a brunch manager of Qingdao area. My mother Tomiko was an elder of  five sisters who came from Toyama Japan. They were married in 1941.









       Professor Emeritus

I am 80 years old and a Professor Emeritus of Chuo University in Tokyo.

I completed my undergraduate studies  and my graduate studies specializing in Information Science at Keio University (1969). I received my degree in Information Science at Keio University.

Between 1969 and 1984 I held my business appointment in computer industry of Toshiba as an engineer and a manager of systems design and development for database management systems and information retrieval systems.

I held my first professorship in Information Science at Aichi Shukutoku University, Nagoya where I managed Information Education Center and Graduate School between 1984 and 1991.
In April 1991, I moved to Chuo University as professor of Social Informatics.
In Chuo University I directed a new interdisciplinary research and education. I also directed the Master and Doctor of Social Informatics degree program in digital information course.
Since the early 1990s I had studied the multimedia and Internet transforms for society, professionals, workers, and the public.
In 2002, I was a Visiting Professor of the University of California, Davis where I conducted research of distance learning project.

             Concept Theory

One of my academic topics  at the time of University  was Concept Theory.


   Why is Concept Theory necessary?


When people try to understand the world, they usually already have a general idea in place. This can be described as a concept theory framework (schema). In the past, learning through the schema of books was referred to as literacy. The word literacy expresses its source word, litera. This is a concept of abstracting subjects in characters, and a measure of the ability to interpret these characters so that they respond as close as possible to their concrete images in the real world. The purpose of literacy is not just the understanding of the letters on the surface level, but also the understanding of the structure of the deep underlying concepts. People have learned schema relating to thinking and worldviews in order to give meaning to the information theory are constantly coming into contact with.  

                                 click -->  Concept Theory


         Visiting Professor of UCD

From 2002 to 2004, I was a Visiting Professor of the University of California, Davis (UCD)


A note of I-House news paper(2009) in Davis said below.


    Tac visits I-House on a trip from Japan

Early in October, a man named Saito Takashi stopped by I-House and met with Elisabeth Sherwin.
"I used to come to many events here in 2003," said "Tac" Takashi, who worked as a visiting professor in the computer science department at UC Davis with Dick Walters.
Tac was back in the United States from Japan in order to attend a relative's wedding in Sacramento.
But he wanted to take a little time out and come to Davis and visit I-House.

"I remember (former director) Patrick Widner and (office manager) Julia Hunter-Blair," he said.

"I came to many, many events here from English classes to movies. I met many foreign friends and had the opportunity to communicate with them. I found people and friends and neighbors in Davis and on College Park to be very kind and hospitable."

Tac said his wife, Eiko, used to come to Connections on Wednesday mornings at I-House.

Eiko graduated from the University of Indiana.

Tac said he looks at the I-House web page  when he is
in Japan and is always happy at the memories it brings up.

"The web page," he said, "is very
informative and friendly."
He is now a professor in the department of social informatics,  Chuo University,Tokyo.
Thanks for coming back, Tac.


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