This paper discusses the 3x+ 1 problem, gives an estimate of the range of the questionable num-bers which make this conjecture untenable, derives a recurrence relation, and simplifies the 3x+ 1 operation by the ternary number system.

It sets up the comprehensive evaluation model of construction of excellent courses at the university level by integrating the Analytic Hierarchy Process ( AHP) and ternary number interval judgment matrix.

将层次分析法（AHP）与三元区间数的判断矩阵相结合，构造了大学精品课程建设水平的综合评判模型。

互联网摘选

Representation of 3-D General Mandelbrot Sets Based on Ternary Number and Its Rendering Algorithm

基于三元数的三维广义M集表示及其绘制算法

互联网摘选

Union Algorithm from Binary Number to Ternary Number

基于临近区域递归的二进制数到三进制数合并算法

互联网摘选

A Method of Conversion between Decimal Number and Symmetrical Ternary Number

十进制数与对称三进制数之间转换的一种算法

互联网摘选

The dynamic properties of tent map are discussed completely using ternary notation.

应用三进制方法完整地研究了帐篷映射的动力学特性。

互联网摘选

Determination of Binary and Ternary Heavy Rare Earth Mixture by Differential Kinetic-Curve Fitting Method

速差动力学曲线拟合法测定重稀土的二元及三元混合物

互联网摘选

Algorithm for non-azeotropic ternary refrigerant mixture thermodynamic properties

三元非共沸混合制冷剂热力性质算法

互联网摘选

Design of composition adjustable device for non-Azeotropic ternary refrigerant mixture

三元非共沸混合制冷剂组成调节装置的设计研究

互联网摘选

Varying composition capacity control air conditioning system with ternary refrigerant mixture

三元混合制冷工质变组成容量控制空调

互联网摘选

Study on automotive air conditioning systems using the new ternary refrigerant mixture

汽车空调系统应用新三元混合工质的试验研究

互联网摘选

The traps baited with the ternary mixture, pure or containing 1.5% ( E)-isomers, have all been used effectively as a monitoring system for the diamondback moth in spring and autumn in Beijing suburbs and Su Zhou county.

用以上3种成份，纯顺式或含有1.5%反式异构体，制成的诱芯在北京郊区和苏州郊区于春季或秋季均可测出蛾高峰，可有效地用于虫情测报。

互联网摘选

The Study of the Partition of High Spectrum Mixed Pixel and the Topographical Objects Classification; Determination of Chlorobenzene Concentration in Ternary Mixture by Near Infrared Spectroscopy

高光谱混合像元的分解及地物分类的研究近红外光谱法测定三元混合物中氯苯的含量

互联网摘选

A Study on Synergism in Non-ideal Ternary Mixture of Surfactant C_ ( 12) BE-SDS-TX-10

C（12）BE-SDS-TX-10三元表面活性剂非理想溶液复配增效作用

互联网摘选

Extended properties and a methodology for the determination of the structure of simple distillation residue curve maps for ternary mixture are described.

介绍了三组元混合物共沸系统中简单蒸馏残余曲线图结构的性质和画法。

互联网摘选

The determination of individual rare earth in the ternary mixture of dy, Ho and ER by rate differential kinetic method

速差动力学分析法测定镝钬铒混合物中的单一稀土

互联网摘选

Understanding the differences between science and engineering is the necessary precondition to establish the ternary mixture of science, technology and engineering.

明晰科学与工程的区别是科学、技术、工程三元论确立的一个必要前提。

互联网摘选

Conceptual design of clean separation of ternary mixture of acetone-tetrahydrofuran-water

丙酮-四氢呋喃-水混合物的清洁分离工艺的概念设计

互联网摘选

Solid-Liquid Equilibria for Ternary Mixture of Dibromobenzenes and Regular Solution Model

二溴苯三元物系固液平衡测定与正规溶液模型

互联网摘选

Study on the Algebraic, Graphic Method for the Determination of Ternary Mixture by Dual wavelength Spectrophotometry

双波长代数、图解法测定三元混合物各组分的研究

互联网摘选

Determination of Chlorobenzene Concentration in Ternary Mixture by Near Infrared Spectroscopy

近红外光谱法测定三元混合物中氯苯的含量

互联网摘选