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Search Results: 1 - 10 of 97204 matches for " 涂相华? "
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文语转换系统韵律置标方法的研究*
蔡莲红?,罗恒?,汪泳?,谭晖?,
软件学报 , 1996,
Abstract: 韵律理解是言语合成的基础.本文分析了文语转换系统tts(texttospeech)的研究现状,提出了韵律置标的方法,设计了韵律符号,并将其用于汉tts系统中,实现了重音和语调的模拟,改善了输出语音的自然度.
大冷量旋转抛物面G型辐射制冷器的研究现状

红外 , 2005,
Abstract: 随着多红外光路和线列探测器元数的增加,对辐射制冷器的关键技术提出了更高的要求。在几种形式的辐射制冷器中,旋转抛物面G型辐射制冷器能够提供较大制冷量和较低制冷温度。FY-3中分辨率成像光谱仪采用了G型辐射制冷器对探测器进行制冷。本文对G型辐射制冷器的研究现状和需要解决的关键技术进行总结。
镧离子对tRNAPhe结构的影响:亚胺质子NMR谱

科学通报 , 1998,
Abstract: 采用^3H NMR方法研究了镧离子对酵母tRNA^Phe分子结构和构象变化的影响。结果表明位于扩大二氢尿嘧啶螺旋的端梢三级碱基对(G-15)(C-18)明显受加入La^3+的影响,向低场位移0.33;与三级相互作用相关连接D-茎和接受茎起固定L结构转折的(U-8)(A-14)碱基对向高场位移0.20;另一可能受La^3+影响的亚胺质子碱基对为(G-19)(C-56),由于该碱基对位于高度叠加的12
y函数测试在中坝气田须二气藏中的应用

天然气工业 , 1990,
Abstract: ?本文应用y函数探边测试方法,通过对中坝须二气藏的高、中、低产气井20井次实际压力恢复资料的处理,选择典型曲线判断其边界性质及渗透性能变化,并求获地层流动系数、渗透率、导压系数、气井到边界的距离、其结果与实际情况基本吻合.
试论张楚廷的教育美学
Separating the Government ’s Authority, Management and Assessment: an opportunity for Good Governance of University


- , 2016,
Abstract: 我国当代教育家张楚廷将其教育思想整个地建立在美 学基础之上,并在其大学校长管理、课堂教学和语言修养中进 行种种教育之美的创造。他认为,人是一种美的存在,人能通 过美的创造不断获得新生命。人对美的自觉在于通过教育来培 养、提升人的审美、发现美与创造美的能力。对于一个自觉的生 命来说,自我教育是一个永远都未完成的生命塑造之旅。对于 一个自觉的教育家来说,教育是一件永远都未完成的艺术品。 针对教育内外种种矫饰、异化教育的认识,张楚廷认为,当教育 是教育自己时,即服务于人的自我创造之时是美的。
Professor ZHANG Chuting is a prominent contemporary educator of China. He premised all his educational ideas on aesthetics, and faithfully practiced his educational aesthetics in his university presidency, classroom teaching and instructional discourses. Professor Zhang holds that the mere existence of human being is a beauty, and humans can renew their life through continuous aesthetic creation. He believed that human’s awareness of beauty consists in their capacity for cultivation to develop and uplift their aesthetics and the ability to discover and create beauty. For a person, self-education is an endless journey of shaping and perfecting oneself. For an educator, education is an artwork that will never be deemed to have approached perfection. Commenting on sumptuous ornaments and alienation of education, he maintains that education is aesthetic only if it endows students with consciousness and creativity in their education, that is, education is aesthetic when it serves the purpose of human being’s selfeducation . ZHANG Chuting is a creator of educational art. His ideas on educational aesthetics originated from his university management as a president, his classroom teaching and his classroom discourse refinement. He asserts that what a university refers to is its grand “learning”, i.e., a university is a place where people seek true excellency and great wisdom. He believes that a university is true to its name only when it is the place where people create beauty, which can only be realized through its “scholarship”. Accordingly, he made promoting the university’s cultural accumulation his core work, when he stepped onto the position of a university’s president. He hoped that the maturity, solemnity, and vitality of the university would bring the students enjoyment of beauty. ZHANG Chuting served two separate terms of the university presidency, skillfully managed drawing on his educational aesthetics and ultimately enhanced its sense of self-empowerment, self-confidence and freedom. Professor ZHANG Chuting is an indefatigable in thinking and teaching. His teaching is never impartment of erudition only, but also the presentation of his active thinking, thereby stimulating the thinking of the students. He advocates that the key to a university is “scholarship”, or rather, research. Research is to
地理信息资源Internet导航
,
地理学报 , 2001,
Abstract: (一 )自然地理1 . 美国鱼和野生动物服务 -国家湿地清单 (U.S.FISH AND WILDLIFE SERVICE- NATIONALWETLANDS INVENTORY)。网址 :http://www.nwi.fws.gov/该网站提供了国家湿地清单 ,它包括一系列湿地植物种类、产品信息、生态学等方面的链接。2 . 因特网地理资源 (Internet Resources for Geographers) ,网址 :http://www.utexas.edu/depts/grg。为地理学家提供信息和与地理相关的链接。3.  NOAA气候学计划 (NOAA Paleoclimatology Program )。网址 :http://www.ngdc.noaa.gov/paleo/paleo.html.。该网站包含…
刚塑性可压缩材料的变分原理

科学通报 , 1989,
Abstract: 自1979年森谦一郎等提出刚塑性有限元中的可压缩法以来,已在分析金属成形过程中得到了广泛的应用。刚塑性有限元的理论基础之一是刚塑性材料的第一变分原理,在满足不可压缩条件下的这个变分原理已得到证明,但对于屈服条件与静水压力有关的刚塑性可压缩材料,类似的变分原理能否成立是需要加以证明的,这个问题尚未得到解决。
TEMPERATURE GRADIENT LIQUID PHASE EPITAXY UNDER A STEADY NATURAL CONVECTION FLOW
稳定自然对流下的温度梯度液相外延

TU XIANG-ZHENG,

物理学报 , 1982,
Abstract: 介绍了稳定自然对流下的温度梯度液相外延,稳定自然对流由加在溶液上的水平温差产生,用简化模式计算了该生长的生长速率,计算给出:该生长的生长速率与水平温差的平方根成比例;具体对Ga0.85Al0.15AS生长,在本工作给定的条件下,生长速率为稳态扩散理论预示生长速率的1124倍,在大部份生长面积内,外延层的厚度变化小于平均厚度的±10%,设计了稳定自然对流下的温度梯度液相外延装置,用该装置生长了厚Ga1-xAlxAs层,实
REDUCTION OF DISLOCATIONS IN LPE LAYERS DUE TO THE ACTION OF THERMAL STRESSES
热应力作用降低LPE层中的位错

TU XIANG-ZHENG,

物理学报 , 1983,
Abstract: We present here a model of the reduction of dislocations in LPB layers by the formation of <110> oriented interfacial dislocations parallel to the surface of the substrate due to the glide motion of substrate threading dislocations which is drived by the thermal stress produced by a temperature difference. In the temprature gradient LPE under a steady natural convection flow, there is a temperature difference across the thickness of the substrte. The temperature difference can cause a thermal shear stress in the fixed substrate. Thick GaAs and Ga1-xAlxAs (x<0.3) layers were grown on (100) GaAs substrates. The estimated value of the thermal stress is slightly greater than the critical resolved shear stress for the formation of <110> oriented dark line defects. The observation of subface etch pits shows that the epitaxial layers have lower dislocation densities than that of the substrates or are even dislocation-free. The observations of interfacial etch grooves and cathodoluminescence show that substrate threading dislocations bent so that segments run along the interface and a interfacial dislocation network is formed. The transmission electron microscopy observation shows that the majority of these interfacial dislocations are 60° type dislocations and the minority are Lomer dislocations. It implies that it is possible to eliminate all substrate threading dislocations with the introduction of interfacial dislocations by thermal shear stress.
AlGaP固溶体的电反射光谱
江德生,,刘继光
半导体学报 , 1984,
Abstract: 研究了Al_xGa_(1-x)P液相外延层(x≤0.58)在2.0eV到5.5eV范围内的电反射调制光谱,对测量的光谱结构进行了分析,得到了AlGaP中E_0、E_1、E_0~'、E_2各临界点随组分x的变化、有关结构的加宽参数和相对强度.从GaP和AlP的能带出发,对AlGaP固溶体各临界点处的能隙随x的变化按虚晶近似进行了讨论.
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