活动标形及其在点啮合齿轮传动误差分析中的应用

活动标形法的论述首推苏步青译，佐佐木重夫著《微分几何学》，还有的著作从外微分形式引入活动标形,本文论证取曲面的正交曲率网为参数网时，曲面论的基本公式就是活动标形的微分形式，并用其分析了点啮合齿轮传动误差．     

Bistable Behaviour of N Two-Level Atoms Interacting with the Field inside a High-Q Cavity Containing a Nonlinear Kerr-Like Medium

Taking the intensity-dependent coupling between atoms and cavity mode into account, we investigate a system consisting of N homogeneously broadened two-level atoms interacting with the field inside a single-mode Fabry- Perot cavity containing a nonlinear Kerr-like medium. We derive the steady-state bistable behaviour of the system, and further analyse in details the influence of several critical parameters on the bistable behaviour.     

有机肥料全氮、磷、鉀的同时快速测定

一、方法提要本試驗提出以硫酸和过氧化氫快速消化有机肥料(厩肥、堆肥等),在同一試液中,以甲醛法或蒸餾法測定全氮。以釩钼黄比色法測定全磷。以在硷性溶液中煑沸去銨后,用亚硝酸鈷鈉此浊法和直接以火焰光度法測定全鉀的快速分析方法。     

场是物質的一种形態

一、“场”这个概念的定义“场”(電场、磁場、電磁場、引力场)这個概念是許多課程的基本概念之一。雖然如此,有些教科书中講授场的理論時所涉及的一系列的說法、名詞和定義卻講得不正確或不精確。在有些教科书中说:场是所討論的力起着作用的或進行着某一“物理过程”的“空間”。在另一些教科書中則说:場是“介質的特殊狀態”或“空間的特殊狀態”。还有一些教科書中認為:場是在所討論的空间範围内进行着的“特殊物理过程”。上述各种說法都是非常流行的。幾十年來     

Non-Adiabatic Geometric Phase in a Dispersive Interaction System

We investigate the geometric phase and dynamic phase of a two-level fermionic system with dispersive interaction, driven by a quantized bosonic field which is simultaneously subjected to parametric amplification. It is found that the geometric phase is induced by a counterpart of the Stark shift. This effect is due to distinct shifts in the field frequency induced by interaction between different states （｜e〉 and ｜g〉 ） and cavity field, and a simple geometric interpretation of this phenomenon is given, which is helpful to understand the natural origin of the geometric phase.     

用分光鏡观察鈉的吸收光譜和太阳光譜

十多年来我們在讲到高中三年級物理光学部分的“吸收光譜”时,因为沒有实驗配合,光凭教师的口述进行讲解,学生疑問较大。在这次教育革命运动中,由于教师們坚持政治掛帅,大干特干,經过多次实驗,終于用普通分光鏡观察到鈉的吸收光譜和太阳光譜。同学們看完实驗,反映較好。現将具体做法介紹如下,希同志們指正。     

Recombination Process of Hydrogen Molecular Ions： An Application of Time-Dependent Wave Packet Dynamics Method

We present our studies of recombination processes of H^2＋, HD^＋ and D^＋2 with high-energy electrons based on a time-dependent wave packet dynamics method. The final vibrational distributions of the products （H2, HD and D2） have been studied. The isotope effects of the final vibrational distributions and their dependence on initial states are elucidated. The study of the final vibrational distributions is relevant to the infrared gas laser researches.     

Theoretic Study of C Ⅱ Recombination Line

Using the R-matrix method, we carry out theoretical calculations for recombination line λ 8794 A(3d′-3p′) of C Ⅱ, which is important to estimate the abundances of carbon in planetary nebulae. Our calculations are based on three sets of target orbital basis, through which we elucidate the electron correlation and static polarization effects in the dielectronic recombination processes.     

A Theoretical Study of Clusters： Realizing Differences between the Second-Row and the Third-Row Elements

Based on the characteristics of valence bonds and the first-principle molecular dynamics simulation we present an optimum valence bond scheme to study properties of important critical clusters with limited computational effort. The differences between the second-row and the third-row elements belonging to the same families can be understood by examining electronic structures and geometric structures even for small size clusters.     

确定性条件下独立多目标决策模型及其应用

确定性条件下独立多目标决策模型及其应用李家整（哈肥工业大学，２３０００９）设有确定性条件下的多目标决策问题，已知条件为：（１）目标共有Ｓ个，即ｆｉ（ｉ＝１，２，…，Ｓ），并且各目标之间的结果值相互独立，即能在不涉及其他目标的情况下单独考虑某个目标对决...