人のおっぱいはどうしてこういう形になったのか。一夫一妻の論理と流行のファッションとの意外な関係とは。少子化のコストベネフィット。戦争の背後にある、遺伝子に組み込まれた攻撃性とは別の「美学」の問題。科学 と神はほんとうに対立するのか。―動物行動学の草分けとして長く第一線で活躍した著者が、あえて動物学的見地から「人間」を問う。言葉をもって概念を生み出すようになった人間は、どのような存在になったのだろうか 。身近で多彩な例を引きつつ、表面的な現象の奥にある人間の行動論理を、やさしく深く考察する。.

In Visible and Invisible in Greek Philosophy, Professor Yamakawa has collected a number of groundbreaking essays covering the entire history of Greek philosophy from the Presocratics to the Postaristotelians. He explores in a systematic and methodical manner 'the dynamic correlation between the visible and the invisible aspects of Greek philosophers' particularly thoughts.'—Christos Evangeliou, Honorary President, The International Association for Greek Philosophy, Professor of Philosophy, Towson University.

Takahashi translation * is a translation which means reducing all of the redexes in a λ-term simultaneously. In [4] and [5], Takahashi gave a simple proof of the Church–Rosser confluence theorem by using the notion of parallel reduction and Takahashi translation. Our aim of this paper is to give a simpler proof of Church–Rosser theorem using only the notion of Takahashi translation.

Determining the relationship between the entire brain structure and individual differences is important in extending healthy life expectancy, which can be affected by brain atrophy. The entire brain structure has been gradually known to be correlated not only with age but also with individual differences, such as quality of life, general intelligence, and lifestyle. However, little attention has been paid to the relationship between the entire brain structure and personal traits. We herein focused on one personal trait, namely spiritual growth, (...) and examined its relationship with the entire brain structure using two neuroimaging-derived measures, namely the gray matter Brain Healthcare Quotient, a measure of GM volume, and the fractional anisotropy Brain Healthcare Quotient, a measure of white matter integrity, in 229 healthy participants. The results indicated no significant relationship between the GM-BHQ and spiritual growth, but there was a significant positive correlation between the FA-BHQ and spiritual growth after controlling for age, sex, and body mass index with partial correlation analysis. Furthermore, multiple regression analysis revealed a significant positive correlation between the FA-BHQ and spiritual growth after controlling for physical characteristics, such as age, sex, and BMI, as well as other variables related to lifestyle that were collected using the Health-Promoting Lifestyle Profile. These results support the idea that there is a relationship between the entire WM brain structure and spiritual growth. Further studies are required to clarify the causal relationship between the entire WM brain structure and spiritual growth with some interventions to improve spiritual growth. Such studies will help extend healthy life expectancy from a new perspective of personal trait. (shrink)

It has been convincingly shown that peptides play important roles in the regulation and maintenance of a variety of tissues and organs in living animals. However, little is known concerning the potential role of peptides as signaling molecules in developmental processes. In Hydra, there is circumstantial evidence that small diffusible molecules act as morphogens in the regulation of patterning processes. In order to view the entire spectrum of peptide signaling molecules, we initiated a project aiming at the systematic identification of (...) peptide signaling molecules in Hydra. In this review, we describe three peptide signaling molecules and one family of peptides that function as signaling molecules in the processes of axial pattern formation and neuron differentiation in Hydra. These peptides are produced by epithelial cells and are therefore termed “epitheliopeptides”. We discuss the importance of epitheliopeptides in developmental processes within a subset of hydrozoans. (shrink)

Peptides serve as important signalling molecules in development and differentiation in the simple metazoan Hydra. A systematic approach (The Hydra Peptide Project) has revealed that Hydra contains several hundreds of peptide signalling molecules, some of which are neuropeptides and others emanate from epithelial cells. These peptides control biological processes as diverse as muscle contraction, neuron differentiation, and the positional value gradient. Signal peptides cause changes in cell behaviour by controlling target genes such as matrix metalloproteases. The abundance of peptides in (...) Hydra raises the question of whether, in early metazoan evolution, cell–cell communication was based mainly on these small molecules rather than on the growth‐factor‐like cytokines that control differentiation and development in higher animals. BioEssays 23:420–427, 2001. © 2001 John Wiley & Sons, Inc. (shrink)

Why should the work of the ancient and the medievals, so far as it relates to nature, still be of interest and an inspiration to us now? The contributions to this enlightening volume explore and uncover contemporary scholarship's debt to the classical and medieval past. Thinking About the Environment synthesizes religious thought and environmental theory to trace a trajectory from Mesopotamian mythology and classical and Hellenistic Greek, through classical Latin writers, to medieval Christian views of the natural world and our (...) relationship with it. The work also offers medieval Arabic and Jewish views on humanity's inseparability from nature. The volume concludes with a study of the breakdown between science and value in contemporary ecological thought. Thinking About the Environment will be a invaluable source book for those seeking to address environmental ethics from a historical perspective. (shrink)