自然科学

So now it is a powerful theoretical formwork to explore and solve many complicated problems in natural science and engineering.

几何规划的应用几乎涉及自然科学和社会科学的各个领域，特别是许多工程设计中抽象出来的模型都是几何规划的形式，因此它己成为研究与解决自然科学与工程中许多复杂问题的一个强有力的工具；三。

Therefore it is necessary to research the mechanism of greensand used for high compacted molding methods thoroughly.This subject is one section of the National Natural Science Foundation subject ""Ivestigation on Predicting Method and Mechanism of Springback for High Compacted Sand Molds"", followed of the other completed one named ""Research on Microdeformation of Molding Sand"". A serious of experiments has been done on the reequipped three axial machine under certain technological conditions, and the mechanics, material science, rheologic science. It is systematically studied that the influences on the springback of sand mold were caused by the main influence factors: pressure, compacted rate and the content of soil. Through the analyzed experiments' data, the experienced stress-strain relationship concerning the main influence factors were obtained;under different technical parameter, the springback and spingback's potential energy are compared, the differences and indifferences between them are found out, and the springback's mechanism is discussed;according to the tests' data of YangGuoping coming from Tinghua University, experienced formula of molding sand's springback displacement is induced, the displacement and springback are compared, the margin of error's reasons are analyzed, and they are tested and verified mutually.

本课题为国家自然科学基金项目"高紧实度砂型预测方法及回弹机理的探讨"的一部分，是已结题的国家自然科学基金项目"铸造型砂微变形的研究"的后继，运用力学、材料学及流变学理论，利用改装的三轴仪，在一定的工艺条件下，作了大量系列实验，系统的研究了压实比压、紧实率和膨润土含量对砂型回弹的影响；对实验数据进行了分析和处理，得出了型砂关于压实比压、紧实率和膨润土含量的本构关系的经验公式；把各工艺参数下的型砂产生的回弹量与回弹势能进行比较，找出两者存在的异同点，并对回弹机理进行了探讨；通过清华大学杨国平的实验数据，推导出型砂回弹位移场的经验公式，并与实验测出的回弹量进行比较，分析误差造成的原因，并互相进行了验证。

The new method is given to design the optimum profile modification curve design The effects of optimum profile gear in improving the dynamic performance of gear transmission are verified in the Gear Dynamic Performance Test Rig In this dissertation, the main study contents and creative results are shown as following: The influences on the gear transmission system caused by the gear's accumulated error (periodic error and harmonic error) are theoretically studied. A new method is developed to simulate the gear's harmonic error by using the 2-order MARKOV process A simulated model of the dynamic performance which is excited by the gear's accumulated error is obtained.

本文在前人大量研究的基础上，结合作者承担的国家自然科学基金项目"齿轮传动动态系统辨识与三维修形研究"和山东省自然科学基金项目"齿轮传动动态性能仿真及结构参数、齿形的优化修形"，采用理论和试验相结合的新思路，系统地研究了齿轮传动的动态性能，建立了能正确描述齿轮传动系统动态性能的仿真模型和系统辨识模型，给出了确定齿轮传动轮齿修形曲线的优化设计方法，利用自行研制的齿轮传动动态性能试验装置，验证了优化修形齿轮对提高齿轮传动动态性能的突出作用。

The famous physical scientist Heisenberg once dissertate the relationship between human being and natural science like this we have to confront the fact that the natural science is created by human.

著名物理学家海森堡曾这样论述过人类与自然科学的关系：我们不能不看到这个事实：自然科学是人创造的。

In this study, it is easy to correspond piezoelectricity and resistance wires. But this study shall make a good base for the more application of multi-agent system.

本课题得到了国家自然科学基金项目(90305005)；国家自然科学基金重点项目(50135030)；国防预研项目(402030202)；国防 863 项目的资助。

He has made systematic high-level research achievements in the study of solar nebular evolution, meteorites, cosmic dust and Apollo lunar rocks, as well as comparative planetology, the climatic and environmental change of, and mass extinction induced by the impact of extraterrestrial bodies on the earth, formation and evolution histories of solar system, two-stage accretion model of earth's origin, original inhomogeneity of the primordial earth and its constraint on metallogeneity and tectonic evolution.

其地下核子试验地质效应综合研究於1978年获全国科学大会奖；吉林陨石综合研究於1986年获中国科学院重大科技成果一等奖和1987年全国自然科学三等奖；《天体化学》专著於1991年获中国科学院自然科学一等奖；月球探测成果更获工业与资讯化部特等奖和国防科工委个人突出贡献奖。欧阳自远院士在国内外已发表专著16部、主编著作14部、论文426篇，培养硕士、博士与博士后65人。

Natural science will in time subsume under itself the science of man, just as the science of man will subsume under itself natural science: there will be one science

自然科学将及时地把人的科学包容到自身，正如人的科学将及时把自然科学包容到自身：将会有一种科学2。

First, we introduce unitary transformation of matrix filter. In terms of this transformation, an algorithm is presented to construct compactly supported orthogonal multiwavelets from the corresponding multiscaling function.

自二十世纪八十年代以来，小波分析一直是各学科普遍关注的热点研究领域，其应用几乎涉及自然科学与工程技术的各个分支，目前小波分析已成为研究和解决自然科学与工程中许多复杂问题的强有力工具。

Chapter one is on the rationality and necessity of the transition from reflectional method to axiological method to literary theory. The relationship between reflection and value constructs the philosophical basis of the humanities and natural sciences. Nature of literary activities is found by comparison of four aspects: condition, principle, method and process.

先剖析价值论与反映论的关系，指出它们分别构成了人文社会科学和自然科学的哲学基础，通过对二者的前提条件、遵循原则、掌握方法和发展过程的差异的比较，指出人文社会科学与自然科学的哲学基础殊异，而价值论的思考较为贴近文学活动的本质。

No matter the principle of relativity from Einstein's Relativism, Heisenberg's Uncertainty Principle, Bohr's Complementary Principle and Prigogine's Dissipativity Structure, they all tell us that, we can not exclude the human's existence in nature and the important role people play in nature as well.

无论是爱因斯坦的相对论、海森堡的测不准原理，还是玻尔的互补原理、普利高津的耗散结构，都告诉人们，我们不能排除人在自然科学中的存在，不能排除人在自然科学中的重要作用。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。