The boltzmann equation and Newton's method

A method much used in functional analysis for solving nonlinear equations is applied to the Boltzmann equation.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 17, No. 5, pp. 900–907, November, 1969.     

“APD”大会的由来

东京的金秋,格外地艳丽。迎来了第十二届（APD）亚洲包装设计展示交流会的召开暨日本包装设计协会50周年庆典活动。在此时刻,我衷心地祝愿本届（APD）大会圆满成功并希望＂JPDA＂事业前程似锦!     

On convergence of Newton's method for load flow problems

The Kantorovich theorem is virtually the only known sufficiency condition for convergence of Newton's method on a set of non-linear equations. The theorem gives very conservative bounds and is difficult to apply. In this paper the power system load flow problem is solved by Newton's method, and a sufficiency condition for the convergence of the iterations on this particular problem is given. The criterion relates to a condition number defined on the Jacobian matrix associated with the non-linear equations. Computational feasibility is considered and the merits of its use are discussed.     

提高铁芯质量的方法及其展望

通过1J85铁芯在交流磁化条件下的磁性能参数的测量、分析、比较,找到了影响芯磁性能的原因。对如何提高1J85产品质量作了一些具有应用价值的研讨。     

计量的起源及其发展史

计量是起源于古代,经过不同的发展阶段逐步成熟、规范。     

烧结质量的计算机在线检测

对于烧结这类高度复杂的动态系统，提出了利用图象序列和动态模式识别的思想。把图象序列的特征量和质量相结合，很好地解决了烧结质量的在线检测，为最终实验复杂生产系统的自动控制探索出一条新的途径。     

The Origin of the Pseudogap in Underdoped HTSC

Here, the origin of the pseudogap in HTSC is attributed to the modulated antiferromagnetic (AFM) phase, whose preliminary version has been sketched recently by the present author (in J. Super. Nov. Mag. 22:517, 2009). Starting from the t-J Hamiltonian, I show that the formal failure of the perturbation theory leads to a transformation to the pseudogap phase. This phase is characterized by the aggregation of the holes into rows and columns, which in turn results in two internal fields. The first is the modulated AFM field, whose main evidence comes from Neutron scattering experiments. The second internal field is made up by the checkerboard charge density waves that have been observed by scanning tunneling measurements. The present paper deals mainly with the internal field of the first type, and discusses the second type only tentatively. Formalism is derived that yields the ground state, the internal field, the Hamiltonian, and the propagators of the condensed phase. Our results resolve the presumably inherent self-contradictory concept of pseudogap. It is shown that the excitation energy spectrum is gapless despite the order parameter that is inherent to the condensed system. In addition, it is shown qualitatively that our model predicts “Fermi surface” that is in agreement with the experiment.     

拉丁字体的起源与发展

公元前2000年前后,在地中海东岸,当今的黎巴嫩、叙利亚沿海一带,也就是出现“楔形文字”的两河流域附近,闪米特人(Semtes)的分支——腓尼基人(PhOenlclan)建立了一批奴隶制城邦。他们以航海、殖民及海上贸易著称,至公元前1000年左右,活动范围已遍及地中海沿岸的塞浦路斯、西西里岛、撒丁岛、法国、西班牙及北非一带。     

利用牛顿环测量光反射位相差的研究

干涉法直接测量量块长度时的位相差是一个重要的误差来源.我国现在位相测量方法是堆积法,该方法需要很好的研合水平,而且重复性差.提出了一种利用牛顿环来测量光反射位相差的新方法.将一个特制的小透镜分别放置在被测量块和平晶上,在小透镜的下表面和量块或平晶上表面之间形成等厚干涉的同心圆环,即牛顿环.分析牛顿环的图象可以测量反射相移和位相差.使用该方法研制的测量装置对量块和平晶表面的光反射位相差进行了测量试验,其测量结果的标准不确定度小于5 nm.     

游标卡尺测量误差来源分析

本文介绍了引起游标卡尺测量误差的主要因素,并对误差来源进行了分析.     

Origin of USO

Till now a lot of unidentified 'room temperature superconductors', some times mocked as USO (unidentified superconducting object), have been reported with a claimed Tc between 200 to 300K.Here we report a ferroelectric behavior for CuO around room temperature as well as at lower temperatures. This experimental result shows that the ferroelectric property, together with the antiferromagnetic transition which occurs around 230K, may give the apparently "superconducting' evidence around room temperature.Therefore the fundamental ferroelectric and magnetic properties of CuO must be considered seriously in identifying a possible new superconductors.     

Origin of USO

Till now a lot of unidentified 'room temperature superconductors', some times mocked as USO (unidentified superconducting object), have been reported with a claimed Tc between 200 to 300K.Here we report a ferroelectric behavior for CuO around room temperature as well as at lower temperatures. This experimental result shows that the ferroelectric property, together with the antiferromagnetic transition which occurs around 230K, may give the apparently superconducting' evidence around room temperature.Therefore the fundamental ferroelectric and magnetic properties of CuO must be considered seriously in identifying a possible new superconductors.     

中国红木家具及其制品文化思想渊源浅析

通过对传统文化思想和红木家具及其制品特点的分析、解读,简单分析了红木家具及其制品文化形成过程中的自然观念、宗教情结、趋吉避凶、唯变所适的思想渊源。     

无人机飞行品质规范发展思考

文章首先对无人机飞行品质规范发展现状进行了分析,介绍了国外无人机飞行品质规范的研究前沿;针对飞行品质规范的强制性问题进行了分析;最后总结了对我国无人机飞行品质规范发展的几点启示。     

纳米金属微粒表征量的基本关系

在假定纳米微粒近似成球形的前提下,推导出了粒径,微粒原子数,表面原子百分数及比表面积之间的相互关系式,这些关系式对实验将会有一些指导作用。     

Origin of Kern's arc

With the aid of computer-simulated halo patterns, we show that Kern's arc, as seen on the latitude of the circumzenithal arc and on the other side of the zenith, is produced by double-plate ice crystals with a vertical principal axis. Light rays that contribute to Kern's arc are demonstrated by geometric ray tracing. We also discuss the condition under which an arc that is opposite a circumhorizontal arc can appear.     

Effect of Processing Factors on the Qualities of Reserpine Tablets

Reserpine tablets were made by five different processing techniques. The tablets were tested for weight variation, content uniformity, hardness, friability and disintegration. The stability of reserpine in the com-pressed tablets was evaluated at accelerated conditions of 50° and 83% R. H. for a period of 6 months and at room conditions for 18 months. In-vitro availability studies were conducted on the tablets produced by the various techniques. It is shown that the method of preparation of tablets influences their properties in cluding stability and in-vitro availability.     

参数规划最优值函数的几种性质

证明了参灵敏规划最优值函数具有近似ε-权凸,近似ε-中凸性,并刻划了它的有界特征。