A new selection of writings on education by Buddhist philosopher and founder of Soka University, Daisaku Ikeda. Culled from some five decades of the author's works, this collection presents educational proposals, lectures to university students, and personal essays. The author delves not only into the meaning of Soka (value-creating) education but offers a hopeful vision of the power of education to bring happiness to the individual and peace to the world.

An infinite structure is said to be minimal if each of its definable subset is finite or cofinite. Modifying Hrushovski's method we construct minimal, non strongly minimal structures with arbitrary finite dimensions. This answers negatively to a problem posed by B. I Zilber.

We research the political impact of how users access the Internet. Recent research suggests that Internet usage may promote political participation. Internet usage is proposed to be beneficial because it increases activity in diverse politicized social networks and through greater access to information. Even though Internet usage may begin as a non-political activity, we outline several reasons to believe that it may spark later political participation. This impact, however, is likely to be non-existent in new forms of Internet browsing such (...) as through mobile phones, where users do less full-scale browsing. The more difficult browsing interface of mobile phones reduces activity in chat rooms and in-depth browsing of online sources of information which promote participation. To test these ideas, we use nationally representative survey data from Japan, a country which has more pronounced usage of mobile phone browsing. Using a Seemingly Unrelated Regression Model, we also show that the chief determinants of using PC's over mobile phones for Internet browsing are age and education. We then show that PC-based Internet activity correlates with increased political participation, but mobile phone usage correlates with less participation. (shrink)

現代に生きる人間は、国家とどう向き合い、自分のアイデンティティをどのように考えていくべきか。その問いと格闘してきた国際政治学者の軌跡。上巻は、上海で戦争を経験した少年時代、生き方に悩む青年時代、やがて 学問と出会い、アメリカ留学を経て、冷戦・核時代のなかで平和問題に取り組み、社会的発言を繰り広げてゆくまで。.

A new selection of writings on education by Buddhist philosopher and founder of Soka University, Daisaku Ikeda. Culled from some five decades of the author's works, this collection presents educational proposals, lectures to university students, and personal essays. The author delves not only into the meaning of Soka (value-creating) education but offers a hopeful vision of the power of education to bring happiness to the individual and peace to the world.

Let L be a finite relational language and α=(αR:R ∈ L) a tuple with 0 < αR ≤1 for each R ∈ L. Consider a dimension function $ \delta _\alpha (A) = \left| A \right| - \sum\limits_{R \in L} {\alpha {\mathop{\rm Re}\nolimits} R(A)} $ where each eR(A) is the number of realizations of R in A. Let $K_\alpha $ be the class of finite structures A such that $\delta _\alpha (X) \ge 0$ 0 for any substructure X of A. We (...) show that the theory of the generic model of $K_\alpha $ is AE-axiomatizable for any α. (shrink)

In this paper, we investigate definable models of Peano Arithmetic PA in a model of PA. For any definable model N without parameters in a model M, we show that N is isomorphic to M if M is elementary extension of the standard model and N is elementarily equivalent to M. On the other hand, we show that there is a model M and a definable model N with parameters in M such that N is elementarily equivalent to M but (...) N is not isomorphic to M. We also show that there is a model M and a definable model N with parameters in M such that N is elementarily equivalent to M, and N is isomorphic to M, but N is not definably isomorphic to M. And also, we give a generalization of Tennenbaum's theorem. At the end, we give a new method to construct a definable model by a refinement of Kotlarski's method. (shrink)

The great urbanist Jane Jacobs details how urban planning impacts the social interactions and social networks responsible for the economic death or life of a city. How might urban planning impinge on the moral values that underlie that development? I draw on Jacobs’s work on the moral foundations of commercial society to identify two “urban values” (tolerance and innovation). I then examine how these values support the social networks and processes that facilitate urban-based innovation and how urban planning can strengthen (...) or undermine those values. I use the examples of urban planning in the 15th Ward of Syracuse, New York and of city building in the private development of Cayalá in Guatemala City to illustrate these points. (shrink)

Let L be a countable relational language. Baldwin asked whether there is an ab initio generic L-structure which is superstable but not ω-stable. We give a positive answer to his question, and prove that there is no ab initio generic L-structure which is superstable but not ω-stable, if L is finite and the generic is saturated.

現在、一般に普及している「葉隠」の校注本は、次の四書です。(1)栗原荒野編著『校註葉隠』(2)和辻哲郎・古川哲史校訂『葉隠』上中下(3)城島正祥校注『葉隠』上下(4)相良亨・佐藤正英校注「葉隠集」。こ のうち(2)の岩波文庫本以下三書には、索引がありません。(1)の栗原本には索引がありますが、通常の本文索引ではなく、「葉隠」の箇条に付された注記を引き出すための注釈索引で、しかも部立、事項数とも、十分 なものではありません。そのため本書は、この四書のいずれにも使用できる索引をと考えて作製しました。.

We construct an ab initio generic structure for a predimension function with a positive rational coefficient less than or equal to 1 which is unsaturated and has a superstable non-ω-stable theory.

「脳死は人の死」のごまかし、がんでなくても人は死ぬ、「少年A」を解釈するな、埴谷雄高と大森荘蔵など、「魂」(プシューケー)の文体で考える純粋思惟の広大な視界。.

Hrushovski constructed an -categorical stable pseudoplane which refuted Lachlan's conjecture. In this note, we show that an -categorical projective plane cannot be constructed by "the Hrushovski method.".

Job-shop Scheduling Problem (JSP) is one of the most difficult benchmark problems. GA approaches often fail searching the global optimum because of the deception UV-structure of JSPs. In this paper, we introduce a novel framework model of GA, Innately Split Model (ISM) which prevents UV-phenomenon, and discuss on its power particularly. Next we analyze the structure of JSPs with the help of the UV-structure hypothesys, and finally we show ISM's excellent performance on JSP.

Genetic Algorithms(GAs) are effective approximation algorithms which focus on “hopeful area” in the searching process. However, in harder problems, it is often very difficult to maintain a favorable trade-off between exploitation and exploration. All individuals leave the big-valley including the global optimum, and concentrate on another big-valley including a local optimum often. In this paper, we define such a situation on conventional GAs as the “UV-phenomenon”, and suggest UV-structures as hard landscape structures that will cause the UV-phenomenon. We introduce a (...) test function which has explicit UV-structures, and show UV-phenomenon caused by them. Next we analyze Fletcher and Powell function to confirm our hypothesis. Finally we propose a novel framework of GAs which can cope with UV-structures. (shrink)