③The times of all types of mistakes:The children with SRD made more distortions and persistence error in C patterns B method test(3.95±2.40,1.75±1.52;0.35±0.67,0,P < 0.05),and more distortions in D pattern C method test(1.35±1.69,0.35±0.75,P < 0.05)than controls.

Through the analysis of dictation materials and the frequent mistakes of 40 students, this paper shows how to improve the dictation in teaching by using cohesion theory.

Finally,aiming at several mistakes and design principles,multimedia teaching is developed. The key technology of multimedia development are researched.

Thinking on the Mistakes of Property Rights Theory and Reform of Enterprise Property Rights Institution——Classical Property Rights Institution and Modern Property Rights Institute

Among them, the loan appraisal is the first gate to guard the credit risk, because it can help to forecast the economic profit of projects, filter the loan application with relatively high risk, avoid the loan decision mistakes, guarantee the safe return of loans and lower the bad assets etc.

Conclusions The quality of nursing is improved by strengthening the quality management of nursing, thereby stopping the incidence of nursing mistakes and accidents.

This paper makes simple analysis on Godel First Incompleteness Theorem and Godel Second In- completeness Theorem,thus demonstrates that there are mistakes in the process of proving the two Godel theorems.

This review discusses the most promising algorithms of the analysis of real-time PCR curves and possible errors, caused by the software used or by operators' mistakes.

By means of these results, the mistakes discovered by the author in the proofs of certain statements by McKay and Hosoi are corrected.

Frequencies were estimated for direct and reverse mutations resulting from mistakes made in the course of in vitro DNA synthesis.

People need a science comprehending both their and its own destination, universal, far-seeing, harmonizing the whole biosphere, and preventing from mistakes.

This permits to control homologous recombination events in the locus and thus to prevent diagnostic mistakes.

Many methods of analyzing statically indeterminate structures are now available. The method of redundant forces and that of deformations (i. e. the slope-deflection method), heretofore generally used in the U. S. S. R., both require the solution of a system of simultaneous simple equations. In the case of multi-storey and multi-bay bents, the large number of such equations would greatly complicate the calculation work, it being both time-consuming and liable to make mistakes. The method of moment distribution...

Many methods of analyzing statically indeterminate structures are now available. The method of redundant forces and that of deformations (i. e. the slope-deflection method), heretofore generally used in the U. S. S. R., both require the solution of a system of simultaneous simple equations. In the case of multi-storey and multi-bay bents, the large number of such equations would greatly complicate the calculation work, it being both time-consuming and liable to make mistakes. The method of moment distribution simplifies calculations to a great extent, as there is no need to solve simultaneous equations, and therefore it has been warmly received bY practical engineers. Many soviet scholars are also devoted to its study. There are, however, defects in this method, namely: (1) Should the moments obtained in the successive cycles of distribution and carrying-over prove to converge very slowly, twenty or more such cycles must be done if fairly accurate results are expected.(2) In the case of analyzing structures under various conditions of loading, while it is possible to find the influence moments by applying a unit moment at each joint as proposed by Prof. Hardy Cross, it would bequite laborious in the case of multi-storey and multi-bay bents containing a large number of members, especially when subjected to unsymmetrical loadings.For the remedy of the first defect, such Chinese scholars as Profs. Lin Tung Yen, Chao Tsu Wu, Meng Chao Li and Tsai Fang Yin have made much contribution, and the author of this paper has recently written a discussion on the two papers of the last-mentioned scholar. For the remedy of the second defect, the author is unaware of any except that mentioned below.One of the soviet scholars, Dr. P. P. Shaggin (i.e.) has suggested important improvements with regard to both these defects. For the former, he adopted a method of single-cycle distribution; and for the latter, he invented the method of successive conjugation which greatly reduces the work of calculation in finding the influence moments. The essence of these methods is well-worth studying on the part of our Chinese engineers. After an intensive study, the author of this paper thinks that, while Dr. Shaggin's methods are quite correct in principle, his methods of calculation can still be somewhat improved, as described herein, so as to be made more easily applied in practice.This paper Shaggin based upon the book, (Calculation of Multi-storey Frames by the Method of Successive Conjugation) published in 1954 by Dr. P. P. Shaggin in Leningrad, U. S. S. R., shows that, in applying a unit moment at each joint of a given statically indeterminate structure, one can easily find the influence moments at the ends of all the members, and that, after multiplying the unbalanced fixed-end moments at each joint calculated in accordance with the given external loads, by the respective influence moments, the sum of such products added to the original fixed-end moments will give at once the actual moments at each end of the members in the structure.Three notable improvements are indicated in this paper:(1) Dr. Shaggin's formula (5") on page 11 of his book, has been altered to formulas (3) in this paper. (2) For multi-storey bents, Dr. Shaggin's method of finding the conjugate moments (i. e. the influence moments) by formulas is replaced by the usual method of simple moment-distribution.(3) The author of the paper has extended the method to the analysis of multi-storey and multi-bay bents under any system of unsymmetrical loading.Of course, for structures under a single system of loading, influence moments need not be found and, generally speaking, it would be more convenient to apply the original method of moment-distribution; for a multi-storey bent, it would be better, even in this case, to modify it by applying the method of successive conjugation.The author is of the opinion that the application of the methods described in this paper, being convenient and time-saving, would be useful to the practical engineers.

High-frequency titration curves are discussed for various methods of experimental determination (the Q-meter, Z-meter and F-meter methods), using equivalent circuits for C-type and L-type titrating cells. It has been found that for the cases of L-type cell with Q-determination and C-type cell with Z- or F-determination, the quantity measured in the course of titration changes monotonously with .the increase of conductivity of the solution. In these cases, the high-frequency titration curve should be similar...

High-frequency titration curves are discussed for various methods of experimental determination (the Q-meter, Z-meter and F-meter methods), using equivalent circuits for C-type and L-type titrating cells. It has been found that for the cases of L-type cell with Q-determination and C-type cell with Z- or F-determination, the quantity measured in the course of titration changes monotonously with .the increase of conductivity of the solution. In these cases, the high-frequency titration curve should be similar in shape to that obtained in an ordinary conductometric titration. Two mistakes appearing in literature are here pointed out. (1) The equivalent parellel circuit and the equivalent series circuit for the C-type titrating cell do give the identical result for the value of the conductance of the solution which gives the maximum loss of high-frequency energy in the cell. (2) The appearance of a maximum high-frequency loss with increasing conduc- tance of the solution in the C-type cell is not the result of the Debye-Falkenhagen effect. The use of Pt wire electrodes in direct contact with solution for high-frequency titration is suggested. Satisfactory titration curves have been obtained with wire electrodes and a series capacitor to act as a C-type cell with much less shielding troubles.

This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions...

This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions of the structure and development of five frequently observed rain-bearing systems i.e. cold front, blocking high and cold vortex, monsoon heat low, warm front and typhoon.The last part consists of discussions of some points of view in synoptic meteorology in China. It is stated that the monsoon precipitation is various in intensity and duration according the large-scale flow patterns. The difference of moisture content in the middle troposphere as a criterion for the identification of equatorial or tropical maritime air mass is proved to be missleading. It is shown that the upper air moist content is high only within the raining region near the polar or equatorial front. To the south of the equatorial front within the so-called equatorial air mass, the moist content in the middle troposphere is as low as within the tropical maritime air mass. It is the convergence and lifting of the tropical air mass which releases the convective instability and induces the surface moist air rising to the middle troposphere. The phenomenon of the forward-inclination of the so-called North-West Trough based on the time cross-section of wind is proved to be a mistake by combining two systems into one trough. The terminology of shear line, and the correct application of synoptic models in weather analysis and forecas-ting are also discussed.