Welcome to the inaugural article from the Alfred North Whitehead Laureate Lecture, which was held at the Whitehead Academy of Intelligence in Beijing, China, on October 18, 2018. The inaugural lecture was delivered by...Welcome to the inaugural article from the Alfred North Whitehead Laureate Lecture, which was held at the Whitehead Academy of Intelligence in Beijing, China, on October 18, 2018. The inaugural lecture was delivered by Professor Jonathan M. Garibaldi, the Head of School of Computer Science at the University of Nottingham and the Editor-in- Chief of IEEE Transactions on Fuzzy Systems. I am sure you will enjoy his “The Need for Fuzzy AI” in crystal logic and with nothing of fuzzy thinking.展开更多
本文给出定向范畴正向极限的一种简化计算方法,得到定理:设G是定向范畴,G’是G的满子范畴,若对于任意的A∈·bG,存在A’∈bG’,使得G(A,A’)≠φ,则lim G’=lim G. 根据Whtitehead群与正向极限的关系,此结果可简化研究Whitehead群...本文给出定向范畴正向极限的一种简化计算方法,得到定理:设G是定向范畴,G’是G的满子范畴,若对于任意的A∈·bG,存在A’∈bG’,使得G(A,A’)≠φ,则lim G’=lim G. 根据Whtitehead群与正向极限的关系,此结果可简化研究Whitehead群的结构,同时利用此结果给出了[1]中命题32的一种简单证明。展开更多
When R satisfies (strong unit) 1-stable range and M is a R-R-bimodule, the authors calculate that K_1(R(?) M)≌U(R(?) M)/L(R(?) M). As applications, the authors also calculate some Whitehead groups for exchange rings ...When R satisfies (strong unit) 1-stable range and M is a R-R-bimodule, the authors calculate that K_1(R(?) M)≌U(R(?) M)/L(R(?) M). As applications, the authors also calculate some Whitehead groups for exchange rings with artinian primitive factors.展开更多
Hydantoinase and N-carbamoylase play important rol es in the production of optically pure amino acids from racemic 5-monosubstitut ed hydantoins. In this report, hydantoinase and the N-carbamoylase from Burkh olderia ...Hydantoinase and N-carbamoylase play important rol es in the production of optically pure amino acids from racemic 5-monosubstitut ed hydantoins. In this report, hydantoinase and the N-carbamoylase from Burkh olderia cepecia.njut01 were purified to homogeneity by chromatography (Pharma cia Explorer 100 system). The substrate specificity, enantioselectivity, pH depe ndence of activity and temperature stability of the activity were characterized. The results show that the hydantoinase and N-carbamoylase induced from Burkh olderia cepecia.njut01 are both strict D-stereo selective enzymes. They both hydrolyze substrates with side chains containing aliphatic and aromatic res idues with higher activity and affinity toward aromatic than aliphatic substitu ted substrates. The hydantoinase is a homotetramer with subunit molecular weight near 52,000 and is active between pH 6.5 and 10 with an optimum near pH 9.0. The en zyme is active at temperatures up to 60°C, however,it appears instable at h ig her temperatures. The subunit molecular weight of N-carbamoylase is about 35KD. The N-carbamoylase is active in the pH range from 6.0 to 9.5. The optim-pH is 7.2 and the optimizing bioconversion temperature of the N-carbamyolase is 52 °C.展开更多
This paper is a survey of papers,which constitutes a chronological mapping of Brazilian research in theses and dissertations about Whitehead or in dialogue with Process Thought,with an emphasis on works written in the...This paper is a survey of papers,which constitutes a chronological mapping of Brazilian research in theses and dissertations about Whitehead or in dialogue with Process Thought,with an emphasis on works written in the Portuguese language since the 1980s.It is divided into three groups:(1)theses and dissertations restricted to Whitehead and Process Thought and(2)those studies done in dialogue with Alfred North Whitehead and Process Thought.(3)The third section introduces a non-exhaustive list regarding ongoing studies,which were begun prior to the 12th International Whitehead Conference that took place in Brazil in August of 2019.The digital databases consulted were:1)Lattes Platform-CNPQ^1;2)Sucupira Platform-CAPES/MEC2;3)Contemporary Ontology(research group on ANPOF3;4)Digital Library of Theses and Dissertations from IBICT4;5)Theses and Dissertations catalogue CAPES/MEC;6)Digital databases from specific universities.The researches listed are restricted to scholarly research done by Brazilian researchers inside the country or in foreign universities.The descriptive paragraphs were compiled from the abstracts written by their own authors.We did not use ellipses or quotation marks in these cases.展开更多
文摘Welcome to the inaugural article from the Alfred North Whitehead Laureate Lecture, which was held at the Whitehead Academy of Intelligence in Beijing, China, on October 18, 2018. The inaugural lecture was delivered by Professor Jonathan M. Garibaldi, the Head of School of Computer Science at the University of Nottingham and the Editor-in- Chief of IEEE Transactions on Fuzzy Systems. I am sure you will enjoy his “The Need for Fuzzy AI” in crystal logic and with nothing of fuzzy thinking.
文摘本文给出定向范畴正向极限的一种简化计算方法,得到定理:设G是定向范畴,G’是G的满子范畴,若对于任意的A∈·bG,存在A’∈bG’,使得G(A,A’)≠φ,则lim G’=lim G. 根据Whtitehead群与正向极限的关系,此结果可简化研究Whitehead群的结构,同时利用此结果给出了[1]中命题32的一种简单证明。
基金This research is supported by the National Natural Science Foundation of China (19801012)the Ministry of Education of China([2000]65)
文摘When R satisfies (strong unit) 1-stable range and M is a R-R-bimodule, the authors calculate that K_1(R(?) M)≌U(R(?) M)/L(R(?) M). As applications, the authors also calculate some Whitehead groups for exchange rings with artinian primitive factors.
文摘Hydantoinase and N-carbamoylase play important rol es in the production of optically pure amino acids from racemic 5-monosubstitut ed hydantoins. In this report, hydantoinase and the N-carbamoylase from Burkh olderia cepecia.njut01 were purified to homogeneity by chromatography (Pharma cia Explorer 100 system). The substrate specificity, enantioselectivity, pH depe ndence of activity and temperature stability of the activity were characterized. The results show that the hydantoinase and N-carbamoylase induced from Burkh olderia cepecia.njut01 are both strict D-stereo selective enzymes. They both hydrolyze substrates with side chains containing aliphatic and aromatic res idues with higher activity and affinity toward aromatic than aliphatic substitu ted substrates. The hydantoinase is a homotetramer with subunit molecular weight near 52,000 and is active between pH 6.5 and 10 with an optimum near pH 9.0. The en zyme is active at temperatures up to 60°C, however,it appears instable at h ig her temperatures. The subunit molecular weight of N-carbamoylase is about 35KD. The N-carbamoylase is active in the pH range from 6.0 to 9.5. The optim-pH is 7.2 and the optimizing bioconversion temperature of the N-carbamyolase is 52 °C.
文摘This paper is a survey of papers,which constitutes a chronological mapping of Brazilian research in theses and dissertations about Whitehead or in dialogue with Process Thought,with an emphasis on works written in the Portuguese language since the 1980s.It is divided into three groups:(1)theses and dissertations restricted to Whitehead and Process Thought and(2)those studies done in dialogue with Alfred North Whitehead and Process Thought.(3)The third section introduces a non-exhaustive list regarding ongoing studies,which were begun prior to the 12th International Whitehead Conference that took place in Brazil in August of 2019.The digital databases consulted were:1)Lattes Platform-CNPQ^1;2)Sucupira Platform-CAPES/MEC2;3)Contemporary Ontology(research group on ANPOF3;4)Digital Library of Theses and Dissertations from IBICT4;5)Theses and Dissertations catalogue CAPES/MEC;6)Digital databases from specific universities.The researches listed are restricted to scholarly research done by Brazilian researchers inside the country or in foreign universities.The descriptive paragraphs were compiled from the abstracts written by their own authors.We did not use ellipses or quotation marks in these cases.
