一个面向语义的解释器自动生成技术

本文给出从指称语义自动生成解释器后端的一种技术.解释器被表示成PASCAL_like形式.     

沉积方式与基体材料对TiN薄膜内应力的影响

本文研究了TiN薄膜在化学气相沉积、物理气相沉积(包括热灯丝离子镀和多弧离子镀)以及等离子增强化学气相沉积等不同生成条件下的内应力变化。并通过改变钢及硬质合金基体的化学成份和表面状态。考察了基体材料对薄膜应力的影响。在此基础上,对薄膜内应力的形成机制进行了分析讨论。     

MOSFET亚阈特性分析与低温按比例缩小理论的研究

器件尺寸按比例缩小是实现超大规模集成电路的有效途径，但寄生和二级效应却将器件限在一定的水平，本文在对比分析常温与低温下小尺寸器件效应的基础上，重点研究了ＭＯＳ器件亚阈特性对器件性能及按比例缩小的影响，并根据低温工作的特点，提出了ＭＯＳ器件一种低温按比例缩小规则，该原则对低温器的优化设计，从而更大程度在提高电路与系统性能具有重要的指导意义。     

用单片机控制的安全报警器的设计

文中简要地介绍了一个具有分散采集信号，集中报警的安全报警器的设计，作者利用单片机的优点和功能，成功地设计了复盖地域大，既简单又灵活的报警器。     

NUMERICAL SIMULATION OF STRATIFIED FLOW WITH BOTH VERTICAL TEMPERATURE GRADIENT AND VERTICAL SALINITY GRADIENT

Density stratified flow with both the vertical temperature gradient and the verti-cal salinity gradient is simulated numerically, in which turbulent terms are calculated by a sim-plified turbulence stress/flux algebraic model. The feature of stratification and turbulence is de-scribed correctly by the model. The computational results agree well with the experimental data.However, the k-e turbulence model is not so successful.     

WQ—10型煤气平焰烧嘴的半工业性试验研究

对ＷＱ－１０型煤气平焰烧嘴进行半工业性试验，得到了该烧嘴较长时间运行下的一些性能。结果表明，该烧嘴平火焰稳定，炉顶温度分布均匀，燃烧烟气中ＣＯ、ＮＯ含量达到了ＹＢ／Ｔ０６２－９４标准的要求。     

Electrical characterization of porous BaTiO3 using impedance spectroscopy in humid condition

The humidity response characteristics of La doped BaTiO₃ with different sintered densities and room temperature electrical conductivities were investigated using complex impedance measurement. The samples with low density and high resistivity showed the large and nearly linear sensitivity to the change of humidity. The impedance spectra of samples, when exposed to high humidity, can exhibit microstructure-related features, even though they do not give rise to a noticeable characteristic change when exposed to low humidity. The observed impedance patterns were dependent upon the density, and hence the oxidation kinetics of BaTiO₃.     

Analysis of the detectivity for triple-layer heterojunction GaSb/GaInAsSb infrared detectors

In this paper, the detectivity is calculated and analyzed with the front-or backside illuminated case for both N-GaSb/p₂-Ga_0.8In_0.2As_0.19Sb_0.81/p₁-Ga_0.9In_0.1As_0.09Sb_0.91 and N₁-GaSb/n₂-Ga_0.9In_0.1As_0.09Sb_0.91/p-Ga_0.8In_0.2As_0.19Sb_0.81 infrared photovoltaic detectors, respectively. The analysis results show that the main absorption appears in the p-type Ga_0.8In_0.2As_0.19Sb_0.81 material with either front- or backside illuminated case for above two structures. In each structure, the carrier concentration obviously affects the detectivity. The carrier concentration in the wide-bandgap material for the isotype heterojunction should be reduced as low as possible to reduce the tunneling rate at the isotype heterointerface. Moreover, the change of the detectivity with the p-side surface recombination velocity for the N₁-n₂-p structure is more sensitive than that with the p₁-side surface recombination velocity for the N-p₂-p₁ structure. In the N-p₂-p₁ structure with the incident light from the p₁-side surface, two-color detection is achieved.     

Analysis and observation of backscatter-induced crosstalk in a 2-DFDM fiber gyro system

The modulation characteristics of first-order backscatter-induced crosstalk noise in a 2-D frequency-division-multiplexed fiber gyro system are analyzed and experimental results presented. The noise can be reduced from 5°/h to 0.2°/h (0.25 NEB) by proper choice of modulation depth and/or frequency