Let's enjoy 'Think & Try' !
(for Children and Highschool students)
Editor: Toru Nakagawa
Last updated: Jun. 26, 2015

For solving problems creatively
(for Students and the General public)
Editor: Toru Nakagawa
Last updated: Aug. 25, 2015

Methods of creative problem solving
(for Engineers and Researchers novice to TRIZ)
Editor: Toru Nakagawa
Last updated: Aug. 25, 2015

Practices and methodologies of Creative problem solving
(for Practitioners and Experts)
Editor: Toru Nakagawa
Last updated: Aug. 25, 2015

TRIZ HomePage in Japan  Logo
This home page serves as an open forum of information exchange for better understanding and usage of Creative Problem Solving Methodologies, especially based in Japan.  Readers' contributions are very welcome, including introductory articles, papers, case studies, news, questions, comments, etc
Pages under this directory are the English versions. 
Click the hyper-linked keywords or the  buttons.
The  buttons guide you to the Japanese pages.
Most articles are posted in the two languages, but some are only in either of them.  

Last Updated:  November 16, 2015 
Editor:  Toru Nakagawa 
(Professor Emeritus, Osaka Gakuin Univ.)
Last Updated:
  November 16, 2015

Established on Nov. 1, 1998

visits since Nov. 1, 2005

Four Entrance Pages have been introduced.  You may be guided through them to readable/useful articles depending on your situations and interests. 

New Information (for the latest 6 months) are shown below in the present page.  Articles are marked in 5 different colors:   ( old or not classified).  (Oct. 17, 2014)

Let's enjoy 'Think & Try' !

(for Children and Highschool students)

(1) Everything is interesting!
(2) Watch and find it!
(3) Think 'Why?'.
(4) Learn how it works.
(5) Understand the function.
(6) Think for yourself.
(7) Imagine the ideal.
(8) Collect different examples.
(9) Try to divise something new!
(10) Information for teachers and parents

For solving problems creatively

(for Students and the General public)

(1) Necessity and importance of addressing problems
(2) Creativity and enlightenment
(3) Different methods of creative problem solving
(4) Understanding the problems and needs
(5) Analyzing the problem and imagining the ideal
(6) Generating solution ideas and trying to implement them
(7) Case studies in various fields
(8) Addressing to familiar problems and problems in society
(9) Information sources and learning opportunities
(10) Miscellaneous

Methods of creative problem solving

(for Engineers and Researchers novice to TRIZ)

(1) Purposes and significance of 'Creative problem solving'
(2) What is TRIZ
(3) Information sources of TRIZ
(4) History and current situations of TRIZ
(5) Basics of TRIZ
(6) Knowledge bases and tools of TRIZ
(7) Methodologies of TRIZ and its extensions
(8) Application case studies
(9) Mastering and practicing TRIZ
(10) Questions and discussions

Practices and methodologies of Creative problem solving

(for Practitioners and Experts)

(1) Full use of the present site (New information, General index, Searching, etc.)
(2) TRIZ references, links, and software tools
(3) TRIZ news, activities, and conference reports

(4) TRIZ papers and articles

(5) TRIZ case studies of application and promotion
(6) TRIZ lecture notes and course materials
(7) Documents of TRIZ/CrePS methodologies
(8) TRIZ Forum (communications, discussions, questions, etc.)


General Index  (A) Editorial (B) References Links News & activities Software tools (C) Papers, case studies, articles, Lectures, course materials (D) Forum General Index 
Home Page New Information   for children and highschool students for students and the general public for engineers (introduction) for Practitioners

Publications: "TRIZ Practices and Benefits" Series

Search in this site Home Page


New Information    [Articles posted/updated within these 9 months.  marks within these 3 months.

  Papers: The Third Collection of Papers Written by Toshio Takahara (2013-2015): "Theory of Resolving Differences (3) Dialectic Logic and the Way of Life" (Toshio Takahara)  (Nov. 16, 2015) 

The Third Collection contains 9 papers published from 2013 to 2015.  See the First Collection (2003-2007, 14 papers) and the Second Collection (2008-2012, 13 papers) . 'Resolving Differences' is a term coined by Takahara. Recognizing the differences between the wanted/desirable states and the real situations and then solving the gaps are the fundamental motives of human activities, which may take various forms and stages such as setting targets, problem recognition, designing, problem solving, etc.
The papers discuss over the Theory of Resolving Differences, in its wider sense, ranging from the basic concepts, to detailed logic of the methodology, and to the application of concepts. Its core part is the methods of Resolving Differences based on the Radical Enumerative Thinking. By pursuing the thinking methodology, he extended the Dialectic Logic as wider and deeper ways of Resolving Differences. Since he understands that the motivative force of Resolving Differences comes from individual humans, he discusses about the sense of values, world views, attitudes, and ways of recognition, etc. in individual humans, and he regards the whole as the Way of Life of individual humans. In the unified framework of his theory, he discusses about the basic nature of technologies and institutions, detailed logic of the methods of Resolving Differences, and the Way of Life of individual humans, etc. Toshio Takahara has been developing a philosophy with surprisingly large scope.
Nine papers in the present Collection are listed with links to HTML pages and PDF files (mostly written in Japanese). Takahara writes an Annotated Bibliography in Japanese. 
The 3-part Research Notes (newly posted now in Japanese) are the highlights of the Third Collection.   "There are much more unknown things than known ones. It is important to write what are not known yet", he says.  Thus he dared to write the paper of 55 pages in the form of Research Notes. We can read and trace Takahara's ever-developing thoughts up to date.

paper: Research Note on 'Dialectic Logic and the Way of Life' (Part 1): A Note on Dialectic Logic by Granularity, Contradiction and Enumeration (T. Takahara) (20 pages)  (Nov. 16, 2015)

paper: Research Note on 'Dialectic Logic and the Way of Life' (Part 2): A Comment on ‘Six-Box Scheme’ by Nakagawa (T. Takahara) (15 pages)  (Nov. 16, 2015)

paper: Research Note on 'Dialectic Logic and the Way of Life' (Part 3): A Note on Application of Dialectic Logic (T. Takahara) (17 pages)  (Nov. 16, 2015)

  On the 17th Anniversary of  "TRIZ Home Page in Japan":  Toru Nakagawa (Nov. 11, 2015)

This Web site "TRIZ Home Page in Japan" celebrates its 17th Anniversary on Nov. 1 together with readers in Japan and over the world.  This site is to promote the understanding and real usage of TRIZ by openly publishing information and communications related to TRIZ on a not-for-profit basis.  Though I have been operating this site as a volunteer, this site is not a personal site but a public forum to be composed of the contributions by readers, as you see already.  Most pages are published in Japanese and in English in parallel for the purpose of mutual understanding and collaboration between Japanese and overseas TRIZ learners/practitioners.  I envisage that Pubic Web Sites built in different TRIZ Communities will form A Global TRIZ Community with much reduced language barriers .  Since 2012, I have been proposing to establish a General methodology for creative problem solving & task achieving (CrePS) by integrating various creativity methods including TRIZ/USIT .  With the intention of widening the scope and application areas of TRIZ/CrePS, I have started to address social problems (especially, to visualize the problem of poverty in the Japanese society).  The number of visits since November 2005 is (on Nov. 11) 225,296 (increasing by about 13,000 for the last 1 year) to the top page in Japanese and 39,243 (increasing by about 2,500) to that in English.  Four Entrance Pages have been installed for your easy access to articles.  Readers' contributions either in English or in Japanese are heartily welcome.

  Forum:   Visual Thinking with 'Fuda-Yose' (8) -- Thinking over the poverty in the Japanese Society: [A] Increasing poverty among the elderly (3) Anybody has the risk of falling down to the low-living (Toru Nakagawa (OGU))  (Oct. 18, 2015) 

In Chapter 3, the Author, Takanori Fujita, points out five typical patterns of an elderly person falling down to the low-living: (1) Because of high medical expenses due to diseases or accidents; (2) Because of being not accepted by care houses due to the shortage in their capacity. (3) Because of their children being dependent to the elderly due to low income (working-but-poor, with less than 2million yen/year) or social withdrawal. (4) Due to increasing number of divorce of middle-aged or elderly couples. (5) Having become demented but no near-by family support.
The Author writes that the current working generation have much higher risks of falling down to the low-living in their elderly years:  (snip.  See some more in the New Information page in English)
-- I agree with these Author's views. It can be dangerous that most Japanese people still have the mentality of 'all Japanese are of middle class'. We should think and work hard to solve the problem of increasing poverty in the Japanese society.
Visualized diagrams of Chapter 3: HTML and PDF . I have started to post a PDF file containing the final, simplified diagrams of all the chapters together.

 TRIZ Forum: Letters from Readers (Sept. - Oct. 2015) (Oct. 18, 2015)  Index page of "Letters from Readers"

English page:  No communications posted.
Japanese page:  Atsushi Takeuchi, Akira Katahira, Ryuuhei Kurasawa, Toru Nakagawa
Communications related to the Visual Thinking diagrams.

 Paper:   Practice-Oriented Approach towards Ideative Problem Solving (Part 1) Analogy-Based Ideation in Applied Innovations (S. Saleem Arshad (Australia)).   (Sept. 30, 2015)

Dr. Arshad's approach has been centered on 'Practice-oriented  (in place of theory-oriented)', 'Process-based (<-> Outcome based)', 'Practical Knowledge (<-> Abstract knowledge)', 'Applied Innovation', etc.  We appreciate much his contributions so far and coming ones.

 Announcement:   Sales Promotion of Mann's Matrix 2010 (Japanese Edition) by CrePS Institute in the "TRIZ Practices and Benefits" series, Vol. (1A+), (2A+) (Toru Nakagawa)    (Sept. 30, 2015)

For promoting the up-to-date TRIZ Contradiction Matrix, Matrix 2010 developed by Darrell Mann, we are happy to announce of a sales of his books together with the A2-size sheets of Matrix 2010 in their Japanese Editors.  The two sheets (of 3 pages) contain List of Parameters & List of Principles and the Matrix.  Thus, the modern Matrix 2010 are now purchasable inexpensively (additional price of 2500 yen for 5 sets of data sheets) for using in TRIZ application projects, company divisions, university seminar classes, etc. (Sorry but only for Japanese domestic delivery.)  Darrell Mann's message is posted.



  Forum:   Visual Thinking with 'Fuda-Yose' (7) -- Thinking over the poverty in the Japanese Society: (1) Increasing poverty among the elderly (2) Actual living of 'the low-living elderly': Cases and backgrounds (Toru Nakagawa)  (Sept. 30, 2015) 
In Chapter 2 of Fujita's book, the Author describes 4 actual cases where ordinary people have 'unexpectedly' fallen into the status of 'the low-living elderly'.  Case (A) (Man of 76 years old, without marriage) Near the age of 40 while working regularly in a restaurant, his father was found ill of cancer.  So he quitted his job to go back to his parents' home and took care of his father for 1 year and then his mother for 10 more years.  Because no jobs were found in his home town, he moved to Tokyo area and worked in welfare facilities as an assistant-helper until 65.  He had the savings of 5 million yen at his retirement, and the pension of 90,000 yen/month.  The cost of apartment (50,000 yen) and treatment of low back pain and diabetes reduced the savings quickly.  With no savings any more, he had to fill his hunger with native grass.  [snip for cases (B)(C)(D)] -- Reading the description, I have drawn a graph of 'Personal history of Quality of life (especially stability)' sa shown in the right for Case (A).
The Author summarizes the background:  For the elderly, the income becomes much lower than before retirement.  Their desire of 'working some longer to get income for filling the shortage of pension' is often impracticable  The outgo, however, usually does not reduce as supposed, because of higher risks of 'unexpected' needs of much amount of money.  Many elderly people do not have enough savings.  Thus the poverty of the elderly is proceeding in Japan and a significant ratio of the elderly have already become at the low-living status.  Not only taking care of individual cases but also, more importantly, systematic social solutions to the widespread serious problems are necessary.

Graphic representation of 'Personal history of Quality of life'
Case (A)
Toru Nakagawa
Sept. 30, 2015
Click to enlarge.


  Creativity Software:   Fuda-Yose Tool for Visual Thinking -- English Edition Available (Akihiro Katahira, Toru Nakagawa    (Sept. 30, 2015)

'Fuda-Yose Tool' is a handy drawing software tool and supports 'Visual Thinking', It was originally developed by Akihiro Katahira .  Under his guidance, I have demonstrated its usage for visualizing the abstract of Sickafus' paper and a complex social problem (poverty in the elderly) in Japan.  We now have made the software available in English; the tool can accept data in any language.  The tool, in the form of Microsoft Excel file with a macro, is openly distributed (for evaluation purpose only at moment on Sept. 30, 2015) without charge via download at Katahira's Web site . Full description of the instructions, Excel and PDF files of an actual example are posted.  The tool is useful for Visual Thinking by smoothly drawing and handling diagrams.

  News:   TRIZCON2016 is to be held on Mar. 3-5, 2016 at New Orleans, LA  (Apr. 25; Sept. 30, 2015)

Altshuller Institute (USA) is making much efforts for rebuilding its activities and has announced the plan of its next year TRIZCON.  The host is Tulane University.  The event of 3 days of conference is much anticipated.
Call for Papers:  Abstract submission:  Oct. 15, 2015;  Full paper submission:  Jan. 15, 2016

  Forum:   Visual Thinking with 'Fuda-Yose' (6) -- Thinking over the poverty in the Japanese Society: (1) Increasing poverty among the elderly (1) What is 'the low-living elderly' (Toru Nakagawa)  (Sept. 17, 2015) 

I visualized Chapter 1 of Fujita's book with two Fuda-Yose diagrams, one showing 3 characteristics while the other 4 effects.
Characteristics: (1)  The income is remarkably low.  The national welfare minimum (composed of living and housing supports) is about 130,000 yen/month (or about 1.5 million yen/year) for a single elder person living in the metropolitan area.  The concept of 'Relative poverty' is used internationally; In the community (e.g.,a country or region), the persons whose income is lower than the half of the median of the income of the population.  This criterion gives 1.22 million yen for single persons, essentially equivalent to the national minimum welfare.  At this level of living, the basic needs of housing, food, medical care, etc. are often not fulfilled.  (2) Insufficient or no savings.  Low income requires to spend down one's savings, and insufficient savings will result in the crash in living due to any troubles.  (3)  No person to ask for a help (i.e., social isolation).  Due to the trend towards nuclear families, people often have no family members/relatives around. These characteristics mean the low-living elderly have lost all the safety nets and are in the situation where they can not live the healthy and cultural life which is ensured by the Constitution.  It is estimated that there exist about 6 to 7 millions of the low-living elderly at present in Japan. 
The second diagram illustrates 4 effects caused by the increase in the low-living elderly: (a) The elder and their child generations fall into poverty together.  (b) The culture of evaluating long happy life and elderly people will be lost.  (c) Decrease in the consumption by the young and middle-aged, thus resulting in stagnation of economy.  (d) Further reduction in the number of birth of children.


"The low-living elderly"
(1) What is the low-living elderly
Fuda-Yose diagram
Nakagawa (Sept. 17, 2015)
Click to Enlarge


  Forum:   Visual Thinking with 'Fuda-Yose' (5) -- Thinking over the poverty in the Japanese Society: (1) Increasing poverty among the elderly (0) Introduction (Toru Nakagawa) (Sept. 17, 2015) 

Source reference: "Karyuu Roujin - Ichi-oku sou rougo houkai-no shougeki" (The low-living elderly - Coming impacts by the decay of peaceful elder lives for all the 100 millions in Japan), by Takanori Fujita, Asahi Pocket Book 520, Asahi Shimbun Press, Jun. 30, 2015, pp. 222 (Note: The book title in English is Nakagawa's temporary translation)
I am trying in this page to understand the problem of poverty in the elderly by using the recently published book written by a young social worker, Mr. Takanori Fujita, and by visualizing the texts. I wrote down excerpts/abstracts of the original texts, made them into labels, and visualized the logic of the texts by using Katahira's Fuda-Yose tool in accordance with my understanding.  Thus the resultant diagrams are a sort of my rather-detailed notes of the book.  At the start of the series, I post the records of the intermediate stages of visualization for illustrating the process.
The author says:  "Today in Japan the low-living elderly are produced in a large number and we have a serious risk of facing with a situation where peaceful elder lives are lost for almost all the 100 millions of Japanese population.  In this book, 'Karyuu roujin' (or 'the low-living elderly') are defined as the elderly people living at/below the national minimum welfare level or facing with such a risk in living.  The real situations and their backgrounds are surprisingly unknown.  Describing the real problem situations in the full perspectives, we wish to think over solutions together with you, many readers."


"The low-living elderly"
(0) Introduction
Fuda-Yose diagram
Nakagawa (Sept. 17, 2015)
Click to Enlarge

  Forum:   Visual Thinking with 'Fuda-Yose' (4) -- Thinking over the poverty in the Japanese Society: Elderly, Middle aged, Young, and Child Generations (Toru Nakagawa)  (Sept. 17, 2015) 

I am going to start a series of pages on the theme, which is very big, complex, and important, as shown above, and wish to contribute to the society even little by little.   My intentions are:
(1) TRIZ/USIT is an approach of focusing and analyzing problems mostly in technical fields, but CrePS is demanded by the society to be applicable to big and complex problems in wider, different fields. So we should try to extend the usage of our methodology.
(2) For handling big and complex problems, we should better visualize the problems from full perspectives. The Fuda-Yose tool is expected to be useful for this purpose.
(3) Among a large variety of problems in the Real World, I chose this social problem because of its importance.
(4) The increasing poverty in the elderly generation, coupled with the low income for the young, tight living for the middle aged, and poverty effected on children, is going to give serious effects on the Japanese society in future.
(5) The politics in Japan is in a miserable state. Especially, Shinzo Abe's government is full of untruth and proceeds against the majority of Japanese people. We ourselves need to think over various problems logically and to speak out and act for making the future of Japan much better.
Having these intentions in mind, I am going to select some good references for visualizing the problems and wish to build up a methodology applicable to solving such complex problems.

 TRIZ Forum: Letters from Readers (May - Aug. 2015) (Sept. 17, 2015)  Index page of "Letters from Readers"

English pageValeri Souchkov (Netherlands), Toru Nakagawa (OGU)
I noticed two valuable articles in Souchkov's Web site, i.e., TRIZ for business & management and TRIZ glossary.  Valeri Souchkov responded to me with thoughtful suggestions how to make a Web site more attractive.

Japanese page Youichi Hasegawa, Toru Nakagawa (OGU)
Message of my Jun. 26 Update Announcement (in Japanese only) is recorded, as a concise introduction to USIT.  Youichi Hasegawa communicated with me many times discussing on the understanding of TOC and CrePS, etc.


Hiroyuki Iwabuchi
(Kashiwa Photo-Friends Club)
Click to Enlarge


  Forum:   Visual Thinking with 'Fuda-Yose' (3) - Visualizing the logic of Sickafus' Paper 'Subconscious Problem Solving Using Hazy Heuristics', (Akihiro Katahira, Toru Nakagawa)  (Aug. 25; Sept. 17, 2015)  (Sept. 17, 2015)

(A) Katahira has demonstrated to visualize the logic of Ed Sickafus' recent paper (in the Japanese version) with his Fuda-Yose (or Visual Thinking) method.  All the sentences of the paper are made into labels (or Fuda) and their logical relationships are shown in 'Fuda-Yose' diagrams section by section.  The diagrams are shown in PDF for the whole paper, and in HTML especially for the Abstract. 
(B) Nakagawa, reviewing them, thought that for clarifying the logic of a compact document like the Abstract we should decompose some sentences further into their logical units.  So I applied the Fuda-Yose method to the Abstract.  The visualization was actually done in 4 steps; the diagrams are posted in HTML, in PDF, and in the original Excel file.  This example has demonstrated the merit and easiness of Visual Thinking. 
(C) Using the original English texts, the Fuda-Yose diagrams were made in parallel to (B). Then the final diagram was further revised for clarifying the logic by suppressing some details.  The diagrams, including those in the intermediate steps, are posted in HTML , PDF , and Excel .  (Sept. 17, 2015 


Visualized Sickafus' Abstract
English version
Nakagawa (Sept. 17, 2015)
Click to Enlarge

  USIT Paper Q&A:   Q&A on USIT and the OAF diagram (in relation to "Subconscious Problem Solving Using Hazy Heuristics" by Ed Sickafus) (Q: Toru Nakagawa, A: Ed. Sickafus (Aug. 25; Sept. 17, 2015) 

This page records the fifteen email communications carried out last July in relation to Ed Sickafus' paper .  In particular, on my request, Dr. Sickafus kindly wrote a 4-page introductory article on the OAF diagram in USIT: 
    "Unification of USIT to One Graphic (OAF) Heuristics", Ed Sickafus, Jul. 2, 2015   PDF
He explains the definition and usage of the OAF diagram concisely and describes his research motivation towards fundamental principles in problem solving thinking. 
BTW, the start of SIT (Structured Inventive Thinking, later renamed as USIT) in Ford was revealed to be 1985 instead of 1995; the year shown in his USIT Textbook (1997) and in his USIT paper (1999) was found to be a typo.  USIT actually started earlier by 10 yeras.  

Further discussions, by Ed Sickafus, Toru Nakagawa, and Shahid Saleem Arshad, Aug. 14 to Sept. 15, 2015.   15 more email communications are added. (Sept. 17, 2015)

  USIT/CrePS paper:   Subconscious Problem Solving Using Hazy Heuristics (Ed Sickafus (Ntelleck, USA) (Aug. 25, 2015) ; Japanese translation: Toshio Takahara, Hideaki Kosha, Toru Nakagawa)  (Jul. 29, 2015);

This is a Keynote lecture given by Dr. Ed Sickafus (the original developer of USIT) at ICSI 2014, on Jul. 16-18, 2014.  He has shifted his focus to the research of the activities of our brains to get creative solutions and utilizing them effectively. In 2006 he discussed about the relationships between the logical thinking in the left brain and the image handling in the right brain and how to use them in collaboration.  In the present paper (2014), his study has extended further: "The 'Ah-ha!' ideas always come out of the subconscious. Invention is not done by the conscious, but done by the subconscious", Sickafus says. Thus he recognizes the importance of handing on the information appropriately to the subconscious.  He recommends to consider at the conscious level in the purposely-vague (or generalized) terms and images so as to enrich the subconscious ideation.  The author called the method "Hazy Heuristics". 
We have been developing the problem solving methods in the direction of making them structured and logical, i.e. 'Structured Problem Solving' methods.  Its purpose is to communicate about the methods among people and to build and educate the culture.   Once we have mastered such a method thoroughly, we as an individual may (and should better) use subconscious thinking more actively as the shortcuts in the problem solving process, he recommends. -- This may be the position of super-experts, as in the old saying "Enter the Form, and Leave the Form".

  Forum: From Readers:   Visual Thinking with 'Fuda-Yose' (2) - Converting a (short) document into labels and make 'Fuda-Yose' diagrams for Visual Thinking (Toru Nakagawa, Akihiro Katahira)  (Jul. 29, 2015)  -- No English page yet.

As a basis of usig Visual Thinking, Nakagawa asked Katahira to show the method of converting a (short) document into labels automatically and making 'Fuda-Yose diagrams.  Katahira demonstrated the method by using Nakagawa's request message.  He has made a detailed record of the conversion and drawing, in the 'Fuda-Yose' Excel sheets.  The final 'Fuda-Yose' diagram (click the figure at right) clearly shows the intentions of Nakagawa's request and corresponding answers by Katahira. 


Fuda-Yose diagram
Nakagawa & Katahira
Click to Enlarge

  Forum: From Readers:   Visual Thinking with 'Fuda-Yose' (1) - Example of Burning Suicide in Shinkansen Case (Akihiro Katahira, Toru Nakagawa)  (Jul. 7, 2015; Jul. 8; Jul. 19, 2015)  -- No English page

Visual Thinking method and its tool 'Fuda-Yose' were developed by Akihoro Katahira and introduced in this site on Jan. 18, 2015.  For showing its usefulness, I asked him to show examples of usage on various themes.  The shocking case that a 71 yrs-old man commited suicide by burning himself on a Shinkansen train on Jun. 30, 2015 was used as an example.  The old man's mental and social situations are described with the hope of reflecting the problems in the society in Japan.

  CrePS/TRIZ/USIT Documents:   USIT Process Documents (Index): USIT: A Concise Process of Creative Problem Solving in the 'Six-Box Scheme' (Toru Nakagawa (OGU))  (May 25, 2015) (Jun. 26, 2015)

This is the index page of the documents related to USIT and belongs to the document system of CrePS. This page has the indexes of the following 4 items:.
(A) USIT Manual:   
(B) USIT Case Studies: 
(C) USIT Operators:  Links to the pages of simple/full/extended versions of USIT Operators, Cross Indexes to USIT Operators => TRIZ tools and TRIZ tools => USIT Operaotrs.
(D) USIT References:  List of principal references on USIT, especially methodological references

  CrePS/TRIZ/USIT Documents:   A Collection of USIT Case Studies: USIT: A Concise Process of Creative Problem Solving in the 'Six-Box Scheme' (Toru Nakagawa (OGU))   (May 25, 2015) (Jun. 26, 2015)

A number of case studies published so far in different places are collected here.  Individual case studies are described in full extent in a consistent format according to the USIT Manual .   Pleae note that several case studies originally carried out with some other methods than USIT (e.g., TRIZ and others) are also described in the 'Six-Box Scheme' and are shown here as 'USIT case studies'. In this Index page, the case studies are listed in a table.  Each case study is shown individually in an HTML page containing four slides (3 introduction slides and 1 overview summary slide in the 'Six-Box Scheme') and in a PDF file of the whole set of slides. 

   USIT Case Study 1. How to fix a string shorter than the needle (Toru Nakagawa (OGU)), (May 25, 2015) (Jun. 26, 2015)

This Case Study is originally based on Tsubasa Shimoda's Thesis at OGU (2006) and revised further by Nakagawa.  For a familiar, everyday-life problem, the USIT thinking process from the problem definition to the solution construction is explained well.  Even children can understand how to think for this problem.


    USIT Case Study 2. How to prevent a staple from being crashed (Toru Nakagawa (OGU)), (May 25, 2015) (Jun. 26, 2015)

This Case Study is originally based on Kazuaki Kamiya's Thesis at OGU (2004) and is further revised by Nakagawa.  In binding sheets of papers with a stapler, the staple may be crashed in case of 30 or more sheets.  We wanted to improve the stapler so as to be able to bind some more sheets.  Initailly we suspected that the looseness around the axle was the cause of weakness.  In the middle of some experiment, we met an unexpected phenomenon and found the root cause of the problem.  For solving the problem we used Altshuller's Smart Little People's Modeling (SLP).  Even children can understand and enjoy this case study.  


   USIT Case Study 3. Saving Water for a Toilet System (Toru Nakagawa (OGU)), (May 25, 2015) (Jun. 26, 2015)

Source Ref.  Hong Suk Lee and Kyeong-Won Lee (Korea), The TRIZ Journal (Nov. 2003)
This Cae Study has solved a familiar, widely known problem 'how to save the water consumption for flushing in a toilet system'. The authors applied the concept of Physical Contradiction of TRIZ to this problem and solved it excellently.  Once they show how to define the problem and how to handle it, even school children would start suggesting ideas just like the ones in this Case Study.  By describing this Case Study in the 'Six-Box Scheme' of USIT, we can easily follow its thinking process. 


   USIT Case Study 4. Picture Hanging Kit Problem (Toru Nakagawa (OGU))(May 25, 2015) (Jun. 26, 2015)

This case was originally described by Dr. Ed Sickafus in his USIT Textbook (1995). It has been used, revised, and extended by Toru Nakagawa as a standard USIT case study along with the development of USIT itself. A standard USIT Case Study on a familiar problem, easy to understand for everybody and yet deep in thoughts.


   USIT Case Study 5. Increase the Foam Ratio of Porous Polymer Sheet (Toru Nakagawa (OGU)) (May 25, 2015) (Jun. 26, 2015)

This Case Study was originally made by Toru Nakagawa at the 3-day USIT Training Seminar conducted by Dr. Ed Sickafus in Mar. 1999.  It used the Particles Method, an extension of Altshuller's Smart Little People's Modeling (SLP), effectively in solving the problem. In the description of the present Case Study, I inserted the Atttribute and Functional Analyses, which were skipped in the original case study, for the purpose to illustrate the USIT process fullly.  A real problem in the field of chemical engineering is solved with the Particles Method.


  CrePS/TRIZ/USIT Documents:   USIT Manual: USIT: A Concise Process of Creative Problem Solving in the 'Six-Box Scheme' (Toru Nakagawa (OGU))  (May 25, 2015) (Jun. 26, 2015)

USIT ('Unified Structured Inventive Thinking') was originally developed by Dr. Ed Sickafus (1995) as a concise and consistent problem solving process and has been extended further in Japan by integrating and unifying various TRIZ methods into USIT.  By recognizing the Six-Box Scheme (of USIT) as a new paradigm of creative problem solving, USIT is now established as a concise overall process for the real practice of the General Methodology of Creative Problem Solving (CrePS), which can include/unify TRIZ, USIT, and many other creative problem solving methods. 
Manual of the USIT process has been described in the form of 31 slides along its steps.  The USIT process is now fully described by use of the consistent demonstration of a case study and instructions and remarks on the USIT concepts and its thinking process.  Examples of USIT usage in the 'Collection of USIT Case Studies' are described along the steps of the 'USIT Manual so that you can understand USIT fully in its variety of usage.  The Manual is posted both in HTML (with images) and in PDF .

 TRIZ News:  The TRIZ Journal has been restarted on Jun. 11, 2015 by BMGI.    (Jun. 19, 2015)

The TRIZ Journal has been restarted under the operation by BMGI (USA)!! Congratulations !!! All the archived contents of the original TRIZ Journal (founded and edited mainly by Dr. Ellen Domb in 1996) are kept active, while new papers and articles are published from now on.  Web site:  http://www.triz-journal.com/
The new editorial policy has been announced: to accept contributions widely and openly; to ensure the original author's copyrights; to be unbiased and fair; to edit only for clarity, not for content; to be of high quality and professional; etc. I feel it a nice policy for making The TRIZ Journal an active global-hub Public Web site in TRIZ.  Hope many of you be active contributors of articles and frequent readers of the new TRIZ Journal, for proliferating TRIZ and related methods over the world. (Toru Nakagawa, Jun. 19,2015)

On the new top page, Nakagawa's paper is reposted: "General Methodology for Creative Problem Solving and Task Achieving: Its Vision", Toru Nakagawa, originally presented at ETRIA TFC2013 (Oct. 2013, Paris) and posted in "TRIZ Home Page in Japan" (Oct. 3, 2013)


Carp Flags (Kashiwa)
Photo by Toru
Apr. 30, 2015
Click to Enlarge

  CrePS/TRIZ/USIT Documents:   USIT Manual and USIT Case Studies (Toru Nakagawa (OGU))  (May 25, 2015)

USIT ('Unified Structured Inventive Thinking') was originally developed by Dr. Ed Sickafus (1995) as a concise and consistent problem solving process and has been extended further in Japan by integrating and unifying various TRIZ methods into USIT.  By recognizing the Six-Box Scheme (of USIT) as a new paradigm of creative problem solving, USIT is now established as a concise overall process for the real practice of the General Methodology of Creative Problem Solving (CrePS), which can include/unify TRIZ, USIT, and many other creative problem solving methods. 
Manual of the USIT process has been described in the form of 31 slides along its steps.  And over 10 examples of creative problem solving (originally using USIT, TRIZ, and some other methods) have been described according to the USIT Manual, and form a Collection of USIT Case Studies .  A new page of the USIT Process contains the indexes of USIT Manual, USIT Operators , USIT Case Studies, and USIT References .  All these new pages are posted in Japanese (May 25, 2015); their English pages are under the way.

 TRIZ Forum: Letters from Readers (Jan. - Apr. 2015) (Apr. 25, 2015)  Index page of "Letters from Readers"

English pageEllen Domb (USA), Iuri Belski (Australia), Ramu Iyer (USA), Jim Harrington (USA), Ron Fulbright (USA), Alla Zusman (USA), Stephen Dourson (USA), James Kowalick (USA), George Draghici (Romania), Ravi Phani (India), Nicoletta Locatelli ( ), Helena Navas (Portugal), Shahid Saleem Arshad (Australia), Soo Ben Khoh (Korea), Bui Van Tao (Vietnam), Zawiah Abdul Majid (Malaysia), Toru Nakagawa (OGU)
(a) E. Domb lists up a large number of TRIZ organizations of national/regional/international levels.  (b) I. Belski sent inquiries to over 20 TRIZ people in the world concerning the experiences of TRIZ-related education in universities.  I responded to send several references of my experiences posted in this Web site.  (c) J. Harrington asked over-20 AI members for some real data showing the impact of TRIZ.  A. Zusman among others responded.  I recommended K.J. Uhrner's paper presented at ETIA TFC 2005.  (d) J. Kowalick was interested in the earthquake prediction research especially using Mahalanobis-Taguchi System.  (e) The photoes of Cherry Blossom have attracted a number of Spring Greetings.

Japanese pageOsamu Saito (Keihin), Tsunetake Maekawa (Japan QC Association), Kazuya Yamaguchi (MOST), Yuko Hirayama (Japan VE Association), Bui Van Tao (Vietnam), Toru Nakagawa (OGU)
(f) O. Saito, a beginner of learning USIT, asked questions on two illustrates of 'Picture Hanging Kit Problem.  I answered him that his comments are right in part and we should be very careful in drawing the problem/solution situations.  (g) K. Yamaguchi is interested in the earthquake prediction research and mentions the possibility of analyzing 10,000 aspects of information simultaneously by using Maharanobis-Taguchi method. 

 Editorial:  'New Information' posted in 2012 is moved to the archive file  (Apr. 25, 2015)

 Publication Announcement:  "TRIZ Practices and Benefits" Book Series are now available at Amazon.co.jp Market Place, only for domestic delivery  (Apr. 25, 2015)

Book series published by the CrePS Institute (Toru Nakagawa) are now purchasable at the Market Place of Amazon.co.jp.   The printed editions of volumes (1A), (2A), (3), and (4) are available for the standard price plus 259 yen for delivery (as fixed by the policy of Amazon). No shipping out of Japan. Books and their DL editions are available at the DLmarket site as before.

  TRIZ Paper: Fundamental Theory:  A Note on a Method and Granularity in the Structure of the World (Toshio Takahara)  (Apr. 12, 2015)

An 8-page paper presented at FIT2013 on Sept. 4, 2013.  Mr. Takahara's life-work theme is "To understand the world in a consistent manner, to realize the real basis of our human ways of living, and to establish a general and logical methodology for such a study."  As the basis of his logic, he builds the concepts of 'existing things' and their relationships, and also the ways of describing the whole world, which contains technologies, institutions, and persons.  For such a description, he finds the necessity of 'radical enumerative thinking' (i.e., a clearer extension of 'systematic thinking') and expressions of contradictions (i.e., a clear extension of 'problems'). He also extends the logics of dialectics in a much wider meaning.  Then he considers the basis of person's recognitions and actions and derives how the person decides them, with a range of consideration (i.e. granularity) and with a logic for solution (i.e., a thinking method). He discusses further basis of the person, i.e., the person's attitudes.  The width and depth, and clarity, of the author's consideration is indeed astonishing. 
In Japanese, a full paper and slides . In English, Introduction by Nakagawa .  I am encouraging the author to translate this paper into English.


Photo by Toru,
Mar. 31, 2015, Tokyo
Click to Enlarge

 TRIZ/USIT/CrePS Talk:  Methodology of Creative Problem Solving: TRIZ and Its Extension ~ Scientific Methods for Innovation ~ (Toru Nakagawa)  (Apr. 12, 2015)

The 57 slides were given in a lecture for 90 minutes at Graduate School of Medical Science, Tottori University, on Jan. 20, 2015.   I first describe that the basic Four-Box Scheme of Abstraction which is generally assumed in the current science and technology has a limitation and that many conventional 'Creativity methods' address with different partial aspects without having a sound overall view.  As new scientific approaches to inventive thinking, I explain TRIZ first and then USIT.  On the basis of them, the Six-Box Scheme was newly formulated as the paradigm for 'General Methodology of Creative Problem Solving' (CrePS).  These four stages of development of the methodology of creative problem solving reflect my own understanding for these 18 years.  Slides in Japanese  and also in English translation  .


Photo by Toru,
Mar. 31, 2015, Tokyo
Click to Enlarge

 TRIZ/USIT/CrePS Talk:  General Method of Creative Problem Solving: 'Six-Box Scheme' (Toru Nakagawa)  (Jan. 8; Apr. 12, 2015)

A talk presented to a dozen of highschool students at Yokohama Science Frontier High School (YSFH). Using 20 slides I gave a talk with many small excercises on Creative Problem Solving Methods for just 60 minutes.  I tried to give a general view of how to think and solve problems creatively, by the demonstration and excercises on my favorite case study 'How to make a knot with short string at the end of sewing'.  Full slides in Japanese .  -- Give me a few more days for English translation. ==> Slides are posted in English translation . (Apr. 12, 2015)

 TRIZ Forum:  Links to Papers Are Added in Nakagawa's Personal Report of Japan TRIZ Symposium 2014 (Toru Nakagawa) (Mar. 27, 2015)

Japan TRIZ Society has publicly posted PDF files of all the presentations given at Japan TRIZ Symposium 2014 in its official Web on Nov. 19, 2014 and on Jan. 14.  And selected 9 presentations have been posted in this Web site.  In my Personal Report (posted on Nov. 27, 2014), I have added the links to all these PDF files in the JTS site and the HTML pages in this Web site.


Photo by Toru,
Mar. 29, 2015, Tokyo
Click to Enlarge

 TRIZ Paper: Social application:  Methods and Examples of Applying the Business Management Related Evolution Trend Proposed by Darrell L. Mann – Translating the Evolution Trends from the World of TRIZ into the Daily Business and Management – (Hisataka Izawa, Ikuo Yoshizawa, et al.(Business and Management TRIZ Research Subcommittee, JTS))  (Mar. 27, 2015)

Presented at Japan TRIZ Symposium 2014.  The 6-membered B&M Study Group reported last year how to generate 'hit products/services' and found the tool of 'Trends of evolution (TE)' effective.  So they tried to make it more useful:
(1) They have made a booklet in Japanese for introducing the Trends of evolution in Darrell Mann's book ("HOSI for B&M").
(2) They have clarified the relationships of TE with several other methods often used in the B&M fields: they include: Nonaka's SECI model, 4 viewpoints in the Balance-score cards, and SWOT.
(3) They made a case study of applying TE: To transfer the technologies of some abandoned business for starting a new business model of servicing the technologies. They have found the examination of 3C (i.e. Customers, Company, Competitors) with respect to the 32 TE very useful.
In Japanese, the full descriptions of the extended abstract and the presentation slides are shown in HTML .  In English, the presentation slides in PDF is accessible through a link to the JTS site (English translation by JTS).

 TRIZ Paper: Social application:  Proposal of an Easy Value Evaluation Method by Means of TRIZ - Taking the Proposal for a New Life Style of the Elderly People as an Example - (Part 1) (Kimihiko Hasegawa, et al. (IP Creation Research Subcommittee, JTS)), (Mar. 27, 2015)

Presented at Japan TRIZ Symposium 2014. After having completied a multiple-year project, the 8-membered IP Creation Study Group discussed freely about what they should work on next and decided to work on this topic. They decided 'The aged and their relevant people live a happy life' as the top purpose (or vision) and 'The aged people solve the problems of their own and others' as the target (or goal).   In more concrete words, they recognize the problem 'The researchers and engineers around their retirement age want to live a life with some good motivation', and wish to have solutions towards 'For achieving their own visions, the aged people solve their own problems as well as others' problems'.  -- This is an important topic for many aged engineers, including many TRIZ practitioners, and for the whole society in Japan. 
In Japanese, the extended abstract and the presentation slides are shown in HTML .  In English, the presenation slides in PDF is accessible via at the JTS site (English translation by JTS).

 TRIZ Paper: Industrial application:  One Method for Expanding TRIZ Application -- Applying TRIZ to Products that TRIZ can Hardly be Applied to -- (Yoshiharu Isaka (IDEA))  (Mar. 27, 2015)

Presented last September at Japan TRIZ Symposium 2014.  In the areas of 'Utility engines' for example, some standard products have been delivered for decades without much change, because of no change in the requirements for basic usage as the power supply in the working machines for agriculture, forestry, etc. Isn't there any room for applying TRIZ?  The key is to find the 'sales points' which can convince the target users, i.e., the person in charge of selecting the engine in the working machine manufacturer. Thus one should think of various functions and features as the 'sales points' by using some idea generation methods. This is the 'Theme definition' stage in the problem solving process.  Then TRIZ will help to generate some methods for realizing the functions/features. -- This is an unfancy but important proposition.
Presentation slides are posted in HTML in Japanese ; those in English can be referred via a link to the Japan TRIZ Society site (English translation by JTS).

 TRIZ Paper: Industrial application:  How to Lead Beginners to TRIZ at the Place of Practices (Shigeru Hisanaga (DENSO))  (Mar. 27, 2015)

Presented last September at Japan TRIZ Symposium(see my Personal Report ) and obtained the 'Best presentation for me' Award as a result of participants voting. 
DENSO introduced TRIZ since 10 years ago (See ). The in-house TRIZ promoters have guided the projects of applicants, composed mostly by TRIZ-novices.   A key to success is realized to adopt the approach and tools which fit well with the needs and intentions of such TRIZ beginners. The author reviewed their 250 projects and characterized them with 3 types of needs (i.e., Want many ideas, Want a good solution, and Want to reconsider from the root) and with 2 types of intentions (i.e., Out of vs. Within the present constraints).   For each category of 3x2, the authors examined the TRIZ tools applied, and have summarized the TRIZ tools recommendable in each of the 3x2 categories of beginners' needs and intentions. -- This is a nice presentation with deep insights.  The author makes a concluding remark saying: "The success of TRIZ practice depends not only on the technical results but also on the participants' satisfaction. And hence, coaching is more effective than consulting."
Presentation slides are posted in HTML and in PDF , where English translation was recently brushed up by Nakagawa.

 Editorial:  An Advice for Searching Pages in This Web Site (Toru Nakagawa) (Mar. 27, 2015)

Try to use the following alternative retrieval methods depending on what sort of pages you want:
(a) Top Page (for New Information (with introductions) within 6 months),
(b) Four Entrance Pages (for Children, for Students, for Engineers, and for Practitioners), [Table of Contents is added in each of these Entrance Pages. (Mar. 27, 2015)]
(c) Categorized General Index Pages (Editorial, References, Papers, Forum),
(d) New Information accumulated (for all the pages listed in the chronological order since 1998)
(e) Any relevant pages (use the links in the texts and in the link tables), and
(f) Site Search with Keywords (the present page, by using any keywords). [In the Table of Links at the bottom of every page in this Web site, a pale brown cell is now added for the link to the Site Search page (Mar. 27, 2015).]


Photo by Toru,
Mar. 29, 2015, Tokyo
Click to Enlarge

 Forum: Earthquake Prediction Research:  Up-to-Date Report on the Early Detection of Omens of Anomalies in Monitoring Power Plant Equipment (Anomalous phenomena detected just before earthquakes) (Takumi Yoshioka (Mado-Planning), Hiroaki Kawai (Hokkaido Inst. of Tech.)) (Mar. 7; Mar. 9, 2015)

Presented at a symposium of Japan Society of Mechanical Engineers (JSME) in Jun. 2010. The authors developed a software system for monitoring the operation of electric power generators in thermal and nuclear power plants.  In such data, they have found effects of earthquakes vividly.  The data monitored every minute show the effect of instantaneous jumping of the generator due to the S-wave of an earthquake, and after the quake the data show unstable increase of wattless currents due to some off-alignment of the generator axes.   In addition, since 30 minutes before the earthquake there appeared anomalous behavior in the data, just like the generator is roaring.   It is not caused by earthquake vibration but by some electromagnetic effect.  This paper clearly expresses the possibility of predicting an earthquake.  English translation of the full text is not ready.

 Forum: Earthquake Prediction Research: Introduction to the Research of Short-term (or Just-before) Prediction of Earthquakes by Use of Electromagnetic Phenomena: Especially Works by Professor Takumi Yoshioka (Hokkaido Univ. of Science) (Editor: Toru Nakagawa) (Mar. 7; Mar. 9; Mar. 27, 2015)

Even though somewhat exceptional for the present site, I am going to start the Forum for introducing researches on earthquake prediction by posting various papers and articles. My intentions are:
(a) Short-term (or just-before) prediction of earthquakes is eagerly desired.  Seismological Society of Japan (SSJ) and Japanese government, however, state that short-term prediction of earthquakes is (almost) impossible and make no significant efforts for research in such a direction.
(b) SSJ regards it impossible, because it uses mechanical aspects (e.g., position, displacement, stress, vibration, etc.) as the keys. If so, we should better try to use different types of signals, especially electromagnetic signals, as TRIZ suggests.
(c) The electromagnetic aspects of earthquakes are not yet well known, and researches in such directions are often criticized premature or even as a fake.   However, we should make efforts in multiple aspects in parallel, e.g., discoveries of new phenomena, inventions of methods for detecting and observing new phenomena, revealing the mechanisms of the new phenomena, inventions of extracting and utilizing useful information from the new phenomena, etc., so as to stimulate one another.
(d) Last year, Earthquake Prediction Society of Japan (EPSJ) was established for promoting the research of short-term earthquake prediction especially putting stress on electromagnetic aspects.
(e) I recently learned Professor Takumi Yoshioka's work where some electromagnetic signals are detected with online monitoring system of electric power generators.  Since I think it hopeful and significant, I wish to support the promotion of its examination and further development.
(f)  This Index page of the Forum will show indexes of articles posted in the present site, references, and discussions, etc.  [Index to references has been enhanced in the Japanese page. (Mar. 27, 2015)]

 TRIZ Paper: Industrial application:  Development of a Spinning Top by TRIZ & TM & Simulation -- Challenge at All-Japan Koma Taisen -- (Tomohiko Katagiri (IDEA), SWCN)  (Mar. 7, 2015)

This paper was presented last September at Japan TRIZ Symposium (see my Personal Report ) and obtaind the 'Best presentation for me' Award as a result of participants voting. 
'All-Japan Manufacturing Industry Koma Taisen (Spintop battles)' was first held in Feb. 2012 and second in Feb. 2013.   The koma (or spintop) must be smaller than 20 mm in diameter and be turned by fingers without using any tool.   There is no limit in the weight, length, shape, materials, etc.   The battle between 2 komas is performed on a slightly concave ring. The koma spinning longer on the ring wins the game, and the koma winning the game twice in a row win the match. See the battles and komas in the Koma Taisen site
The presentation slides explain the processes of considering various contradictions in the design and examining different design prototypes by use of Taguchi method and simulations.  The SWCN's koma (named 'cat's punch') was extraordinary in its shape; just after turning, the koma opens its 3 arms for hitting out the competitor, and it won the second place at the Second All-Japan Koma Taisen.
In the Japanese page, Extended Abstract and the presentation slides are shown in HTML; Slides in PDF in the JTS site.   In the English page, Extended Abstract only is shown; See the slides in English (translated by JTS) via the link .

  TRIZ News:  TRIZ News in Japan  ( Mar. 7, 2015)

 Japan TRIZ Society (JTS) is going to hold 11th TRIZ Symposium in Japan on Sept. 3 - 4, 2015 in Tokyo.   (Mar. 7; Jun. 19, 2015) 

Call for Participants (PDF) ,  Agenda sheet (PDF),  Abstract of all presentations (PDF)  (Jun. 19, 2015)

 Japan Creativity Society (JCS) is going to hold 37th Annucal Conference on Oct. 3- 4, 2015 in Osaka.   (Mar. 7, 2015)

  TRIZ News:  TRIZ News Outside Japan  ( Mar. 7; Apr. 25, 2015)

Altshuller Institute: Next year TRIZCON2016 has been announced to be held on Mar. 3-5, 2016 at New Orleans, LA . (Apr. 25, 2015)

Altshuller Institute: Dr. H. James Harrington was ellected as the new President.  New strategic plan is under preparation.  TRIZCON2015 was held on Feb. 10-12, 2015 at Houston, TX (Mar. 7, 2015)  

Korea: 6th Global TRIZ Conference 2015 in Korea (KoreaTRIZCON2015) is to be held on Jul. 7-9, 2015 *** at Seoul, Korea (Mar. 7; Jun. 19, 2015)

**** Due to the recent outbreak of MERS in South Korea, GTC2015 was decided to be postponed.  Reschedule will be announced sometime later. (Jun. 19, 2015)

ICSI 2015 is to be held on Jul. 15-17, 2014, at Hong Kong. (Mar. 7; Apr. 25; Jun. 19, 2015)
       Preliminary Agenda is announced:  Invited Keynote & Tutorial Speakers (rescheduled): Darrell Mann, Toru Nakagawa, and D. Daniel Sheu (Jun. 19, 2015)

MATRIZ: TRIZfest-2014 Conference and related events will be held on Sept. 10 - 12, 2015 in Seoul, Korea.  (Mar. 7, 2015)

ETRIA TRIZ Future Conference 2015 will be held on Oct. 26-29, 2015 in Berlin, Germany (Mar. 7, 2015)

General Index: Outline    [Categorized table of all articles (in English/Japanese) accessible with a single click.] 
                                                          [Kept always up to date.  (Checked and improved on Jan. 9, 2013)]

General Index page Categories (table color, link to general index outline)

(A) Parent page and Editorial

Parent page   ; Editorial    ; Entrance pages   ;  New Information    ;  Introduction to TRIZ  

(B) References

TRIZ References    ;  TRIZ Links ;  TRIZ News and Activities   ;  TRIZ Software Tools  

(C) Papers

Papers   ;  Case Studies   ;  Presentations, Research reports, Technical reports, etc.  ; Introductory articles and review articles
TRIZ Classics  ;  Course Materials and Textbooks  ;  Lecture Notes  ;  Lecture Notes on Related Topics ;    Articles in Related Areas

Documents of the CrePS Methodology  ;  USIT Process

(D) Forum

Conference & Seminar Reports   ;  Book Reviews and Introduction to References   ;  Communications, Discussions, Questions, Opinions, Comments, etc.    ;  Collabo: Collaboration Pages with TRIZ Promoters
Home Pages by Students


General Index  (A) Editorial (B) References Links News & activities Software tools (C) Papers, case studies, articles, Lectures, course materials (D) Forum General Index 
Home Page New Information   for children and highschool students for students and the general public for engineers (introduction) for Practitioners Publications: "TRIZ Practices and Benefits" Series Search in this site Home Page

  Questions, comments, submissions, etc. on this home page are welcome via e-mail to:
    Toru Nakagawa,  Dr.,  Professor Emeritus, Osaka Gakuin University
    E-mail: nakagawa@ogu.ac.jp [The same as before retirement.   Email is the main communication channel.]
    3-1-13 Eirakudai, Kashiwa, Chiba 277-0086, Japan.    Phone & FAX:  +81-4-7167-7403