Recent advances in molecular biology and microanatomy have supported homologies of body parts between vertebrates and extant invertebrate chordates, thus providing insights into the body plan of the proximate ancestor of the vertebrates. For example, this ancestor probably had a relatively complex brain and a precursor of definitive neural crest. Additional insights into early vertebrate evolution have come from recent discoveries of Lower Cambrian soft body fossils of Haikouichthys and Myllokunmingia (almost certainly vertebrates, possibly related to modern lampreys) and Yunnanozoon (...) and Haikouella (evidently stem-group vertebrates). The earliest vertebrates had an unequivocally marine origin, probably evolved mineralised pharyngeal denticles before the dermal skeleton, and evidently utilised elastic recoil of the visceral arch skeleton for suction feeding. Moreover, the new data emphasise that the advent of definitive neural crest was supremely important for the evolutionary origin of the vertebrates. BioEssays 23:142–151, 2001. © 2001 John Wiley & Sons, Inc. (shrink)

Derived from Heidegger's interpretation of attractive force with a high volume of inspired beauty care and a master not only the followers. And in order to maintain this special, he followed the great classical psychologists: Ferdinand learning. He also won in the traditional school psychology professor at the certificate, but his real motive is not subject to the ancient hope臘Heidegger was carried out by the interpretation of the full amount of impact force. Nevertheless, Heidegger's classic is still up to the (...) United States: "true management and methods" to maintain significant influence over. Up to the United States as a major interpreter of Heidegger's thinking, and faithful friend. In about two more people, I turned to introduce three other in Heidegger, Gadamer's major research on the influence of the philosopher: Park Latin chart, sub-km Aristotle and Hegel. First we look at the future Park Latin chart, I think the focus on conversation and dialogue up to the United States and the "dialectic dialogue" concept. The relative importance of making it true, so true that people with reasonable doubt and dialogue. Although there are many plans to pull up to the United States Park effect, but I make up as two points and a U.S. interlocutor's talent and try to prove. I have given up by the United States with three coming from Aristotle's concept of sub-km: wise , mimetic and tragedy. Wise is to predict the results of practical wisdom for the rational, he does not see a formula-based learning, as can be, but based on life experience. That mimic the Department of Aristotle in the sub-km only copy, and is reasonable in real life, the ultimate communicator. Finally, the tragedy is not the only sub-km Aristotle considers the six parts of the structure, but compassion and fear the experience of change in the audience angle of view, it is up to the United States in view of the viewer's experience of understanding and application, is a kind of tragedy action meaningful participation and experience. Beneficiary of up to U.S. history in Hegel's awareness of personal, Hegel's dialectic, as well as their knowledge to the arts is the current acceptance of the senses. He does not agree with Hegel referred to the "art of the past things," Hegel explains how this point. Shortly we will be able to see the remarkable work of art as a nervous balcony. Let me give you a visit in Heidelberg, Heidegger's experience in the United States up to the lecture, he objected to clarify and to hide his own dialectic and Hegel's dialectic with links, because at the end of Hegel's philosophy of total abstraction knowledge. In the second part of this lecture, I turned to the analysis of Gadamer's thesis on the art of "the relevance of the United States," and Heidegger in this direction is the famous "Art works of origin> thesis compared. In the late writings, Heidegger shows that there is not his main independent and self-study will be presented in the art of the earth and the world as a tension. In Gadamer's thesis in art, he follows Heidegger in the hope臘by establishing the art of human culture, learn the origin of works of art ontology analysis. He discussed all the cultural roots of the game , the difference between symbolic meaning and religious ceremonies. But he formed an art theory of the problem to analyze, it also clarifies the classical art and contemporary abstract art. In these three elements: the game, symbols and festivals, art up to the United States to find a structure is more deep cultural roots. As in the early hope臘ceremony, dance performances and tragedy. Gadamer's encounter with the magnetic force of Heidegger's interpretations made him cautious not to become simply a follower of the great master. To maintain his independence, he studied with Paul Friedländer, the great classical philologist. He attained certification in classical philology to teach in the secondary schools, but his true motive was to be able to resist the powerful interpretations of Greek philosophy put forward by Heidegger. Nevertheless, Heidegger remained a major leavening influence on Gadamer's classic, Truth and Method, and Gadamer became a major interpreter of Heidegger's thought, and a constant friend. After a few comparisons between them, I turn to three major philosophers other than Heidegger who contributed concepts to Gadamer's masterwork: Plato, Aristotle, and Hegel. Regarding Plato, I point to the emphasis in Gadamer on dialogue and conversation and the concept of eumeneis elenchoi, the respect the opponent that recognizes that he could be right, so they join together in dialogue in quest of the truth. Although there are many other debts to Plato in Gadamer, I point to these two and testify to Gadamer's gifts as a conversationalist and debater. I single out three concepts of Aristotle that Gadamer used: phronesis, mimesis, and tragedy. Phronesis is the practical wisdom that goes beyond calculative reason. It is based not on formulas that can be learned but on experience of life . Mimesis in Aristotle is not just copying, but on a recognition that ultimately conveyed truth about life. Finally, tragedy for Aristotle is not just a structure with six parts but an experience of pity and terror that transformed the perspective of the viewer. This was important in the hermeneutics of Gadamer that looked at the viewer's experience of recognition and application, a participatory experience of the meaning of the action of the tragedy. Gadamer is indebted to Hegel for the historical character of consciousness, the Hegelian dialectic, and the recognition that that art is a sensuous representation of the real. He did not agree with Hegel that art was a thing of the past, and also explained what Hegel meant by this: we no longer saw art as a disclosure of the divine. I mention an experience I had of Heidegger's visit to Heidelberg, where he spoke after Gadamer's lecture rejecting his effort to connect his dialect of clearing and concealing with Hegelian dialectic, because Hegel's philosophy always ended in absolute knowledge. For the second major part of the lecture, I turn to an analysis of Gadamer's essay on art, The Relevance of the Beautiful , comparable in a way to Heidegger's famous lectures on The Origin of the Work of Art . In the latter work, Heidegger declares his independence of his masterwork and presents art in terms of the tension between earth and world. In Gadamer's essay on art, he goes beyond the Heideggerian emphasis on the ontology of the artwork by seeking to establish the anthropological roots of art in Greek culture. He discusses the roots of all culture in play, the significance of the symbol, and the meaning of religious festivals. But he begins with an analysis of the problem of formulating a theory of art that does justice both to classical art and contemporary nonrepresentational art. In all three elements, play, symbol, and festival, Gadamer finds a foundation for art in the deep roots of our culture as found in the ritual, dance, and tragic plays of ancient Greece. (shrink)

Revealing the general status quo of teacher curriculum leadership has great theoretical, policy, and practical significance. However, large-scale empirical investigations in this area are rare, and there is even less attention to the current situation of rural teacher curriculum leadership. Based on the survey of 2,966 rural teachers in 20 provinces of China, this paper presented the status quo of rural teacher curriculum leadership and examined influencing factors through multiple linear regression analysis. It was found that curriculum leadership of rural (...) teachers was at a low level with backward leadership views, lack of practical ability, and low sense of identity. Regression analysis demonstrated that individual field factors had a significant impact on teachers’ curriculum leadership. Specifically, the higher the teachers’ leadership willingness, trust in others, and self-efficacy, the higher the curriculum leadership. The school field was also an important influential aspect. In particular, the formation of a common vision and teacher community by the school and the appropriate empowerment of the principal had a significant positive impact on the curriculum leadership of rural teachers. Based on these key findings, several improvement suggestions are put forward at the end, which can be used as references for other countries to develop improvement plans on rural teacher curriculum leadership. (shrink)