检索结果-南通市图书馆

思想战线 2002年第4期28卷 30-33页

作者：刘亚建云南大学公共管理学院云南昆明650091

我国改革开放以来经济高速发展 ,几乎可以与战后取得经济奇迹的日本相媲美 ,但我国实现工业化的目标 ,却需日本所花时间的两倍以上 ,这里的关键问题是发展的效率低 ,而要提高经济发展效率 ,就需要加大经济结构的调整。

关键词：经济增长速度经济增长效率国民生产总值

在线全文

学校读者我要写书评

暂无评论

继父母子女关系的法律调适

思想战线 2001年第4期27卷 85-88页

作者：杨晋玲云南大学法学院云南昆明650091

在家庭关系中 ,继父母子女关系由于产生的特殊性、关系的复杂性、权利义务的不确定性和关系维持的艰难性与长期性的特点 ,而必须重视对其的法律调适问题。但由于我国婚姻法对这一关系的规定过于原则、简约 ,在实践中带来了一些问题 ,其... 详细信息

在家庭关系中 ,继父母子女关系由于产生的特殊性、关系的复杂性、权利义务的不确定性和关系维持的艰难性与长期性的特点 ,而必须重视对其的法律调适问题。但由于我国婚姻法对这一关系的规定过于原则、简约 ,在实践中带来了一些问题 ,其中尤以对继父母子女权利义务关系规定的不明确造成的矛盾最为突出。对这些问题 ,有必要进行分析研究并加以解决。

关键词：继父母子女关系拟制血亲扶养关系法律调适

IMPROVING EIGENVECTORS IN ARNOLDI'S METHOD

在线全文

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 2000年第3期18卷 265-276页

作者： Zhong-xiao Jia (Department of Applied Mathematics, Dalian university of technology, Dalian 116024, China) Ludwig Elsner (Fakultat fur Mathematik, university Bielefeld, Postfach 100131, 33501 Bielefeld,Germany) 大连理工大学辽宁大连 116024 Universitt Bielefeld 德国 Bielefeld 33501

The Ritz vectors obtained by Arnoldi's method may not be good approxima- tions and even may not converge even if the corresponding Ritz values do. In order to improve the quality of Ritz vectors and enhance the efficiency of Arnoldi type algorithms, we propose a strategy that uses Ritz values obtained from an m-dimensional Krylov subspace but chooses modified approximate eigenvectors in an (m + 1)-dimensional Krylov subspace. Residual norm of each new approximate eigenpair is minimal over the span of the Ritz vector and the (m+1)th basis vector, which is available when the m-step Arnoldi process is run. The resulting modi- fied m-step Arnoldi method is better than the standard m-step one in theory and cheaper than the standard (m + 1)-step one. Based on this strategy, we present a modified m-step restarted Arnoldi algorithm. Numerical examples show that the modified m-step restarted algorithm and its version with Chebyshev acceleration are often considerably more efficient than the standard (m+ 1)-step restarted ones.

关键词： Large unsymmetric The m-step Arnoldi process The m-step Arnoldi method Eigenvalue Ritz value Eigenvector Ritz vector Modified

INFLUENCE　OF　CYCLE　PHASE　TRANSFORMATION　ON　TEXTURE　AND　YIELD　STRESS　ANISOTROPY　IN　TITANIUM　SHEET

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1994年第4期4卷 72-77页

作者： Zhu, Zhishou Gu,Jialin Chen, Nanping (Department of Materials science and Engineering,Tsinghua university,Beijing 100084)

ＩＮＦＬＵＥＮＣＥＯＦＣＹＣＬＥＰＨＡＳＥＴＲＡＮＳＦＯＲＭＡＴＩＯＮＯＮＴＥＸＴＵＲＥＡＮＤＹＩＥＬＤＳＴＲＥＳＳＡＮＩＳＯＴＲＯＰＹＩＮＴＩＴＡＮＩＵＭＳＨＥＥＴ￥Ｚｈｕ，Ｚｈｉｓｈｏｕ；Ｇｕ，Ｊｉａｌｉｎ；Ｃｈ... 详细信息

ＩＮＦＬＵＥＮＣＥＯＦＣＹＣＬＥＰＨＡＳＥＴＲＡＮＳＦＯＲＭＡＴＩＯＮＯＮＴＥＸＴＵＲＥＡＮＤＹＩＥＬＤＳＴＲＥＳＳＡＮＩＳＯＴＲＯＰＹＩＮＴＩＴＡＮＩＵＭＳＨＥＥＴ￥Ｚｈｕ，Ｚｈｉｓｈｏｕ；Ｇｕ，Ｊｉａｌｉｎ；Ｃｈｅｎ，Ｎａｎｐｉｎｇ（Ｄｅｐａｒｔ...

关键词： cycle phase transformation texture crystallite orientation distribution function titanium

DIGITAL CIRCUIT MACROMODELING WITH PSPICE

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(China) 1999年第3期16卷 269-276页

作者： To Ching Nai Chou Sek Mak Peng Kin(Faculty of science & technology, university of Macao, Macao)

Ordinary algebra is used to represent Boolean algebra on logic variables with states 0 and 1, so to achieve a unify approach to simulated both digital and analog circuit in PSPICE. Result on mixed A/D simulation shows... 详细信息

关键词： Mixed A/D simulation Digital circuit macromodeling

Metal chlorides loaded on activated carbon to capture elemental mercury

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental sciences 2010年第11期22卷 1814-1819页

作者： Zhemin Shen,Jing Ma,Zhijian Mei,Jianda Zhang School of Environmental science and Engineering,Shanghai Jiao Tong university,Shanghai 200240,China School of Environmental science and Engineering Shanghai Jiao Tong University

Activated carbon （AC） was considered to be an effective sorbent to control mercury in combustion systems. However, its capture capacity was low and it required a high carbon-to-mercury mass ratio. AC loaded with catalyst showed a high elemental mercury （Hg 0 ） capture capacity due to large surface area of AC and high oxidization ability of catalyst. In this study, several metal chlorides and metal oxides were used to promote the sorption capacity of AC. As a result, metal chlorides were better than metal oxides loaded on AC to remove gaseous mercury. X-ray diffractometer （XRD）, thermogravimetric analyzer （TGA） and specific surface area by Brunauer- Emmett-Teller method （BET） analysis showed the main mechanisms： first, AC had an enormous surface area for loading enough MClx; second, Cl and MxOy were generated during pyrogenation of MClx; finally, there were lots of active elements such as Cl and MxOy which could react with elemental mercury and convert it to mercury oxide and mercury chloride. The HgO and HgCl 2 might be released from AC’s porous structure by thermo regeneration. A catalytic chemisorption mechanism predominates the sorption process of elemental mercury. As Co and Mn were valence variable metal elements, their catalytic effect on Hg 0 oxidization may accelerate both oxidation and halogenation of Hg 0 . The sorbents loaded with metal chlorides possessed a synergistic function of catalytic effect of valence variable metal and chlorine oxidation.

关键词： mercury activated carbon flue gas metal chloride metal oxide

Design of a novel low power 8-transistor 1-bit full adder cell

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang university-science C(Computers and Electronics) 2011年第7期12卷 604-607页

作者： Yi WEI,Ji-zhong SHEN (Department of Information science and Electronic Engineering,Zhejiang university,Hangzhou 310027,China) Department of Information science and Electronic Engineering Zhejiang University

An addition is a fundamental arithmetic operation which is used extensively in many very large-scale integration (VLSI) systems such as application-specific digital signal processing (DSP) and *** adder determines the overall performance of the circuits in most of those *** this paper we propose a novel 1-bit full adder cell which uses only eight *** this design,three multiplexers and one inverter are applied tominimize the transistor count and reduce power *** power dissipation,propagation delay,and power-delay produced using the new design are analyzed and com-pared with those of other designs using HSPICE *** results show that the proposed adder has both lower power consumption and a lower power-delay product (PDP) *** low power and low transistor count make the novel 8T full adder cell a candidate for power-efficient applications.

关键词： Full adder design Low power CMOS circuit Very large-scale integration (VLSI)

Several applications of the theory of random conjugate spaces to measurability problems

在线全文

学校读者我要写书评

暂无评论

science China Mathematics 2007年第5期50卷 737-747页

作者： Tie-xin GUO Department of Mathematics, School of science, Beijing university of Aeronautics and Astronautics, Beijing 100083, China Department of Mathematics School of Science Beijing University of Aeronautics and Astronautics Beijing China

The central purpose of this paper is to illustrate that combining the recently developed theory of random conjugate spaces and the deep theory of Banach spaces can, indeed, solve some difficult measurability problems which occur in the recent study of the Lebesgue (or more general, Orlicz)-Bochner function spaces as well as in a slightly different way in the study of the random functional analysis but for which the measurable selection theorems currently available are not applicable. It is important that this paper provides a new method of studying a large class of the measurability problems, namely first converting the measurability problems to the abstract existence problems in the random metric theory and then combining the random metric theory and the relative theory of classical spaces so that the measurability problems can be eventually solved. The new method is based on the deep development of the random metric theory as well as on the subtle combination of the random metric theory with classical space theory.

关键词： random normed module random conjugate space measurability problem 46B09 46H25 46A22 46B22 60H25