Internet-based event synchronization communication driven telerobotics

Based on QoS (quality of service) parameters: time delay, jitter, bandwidth and package loss. As time delay in the Internet is variable, it is hard to compensate it by traditional methods. Event synchronization communication driven method is proposed to overcome the negative effects induced by time delay. This method is a non-time based method and it can get rid of the effects of time in the control loop of telerobotics. Stability, transparency and synchronization can be maintained in it by event-driven method. Multimodal enhanced telerobotics is put forward with its feedback including force, video, audio and temperature etc. The use of multimodal feedback improves the efficiency and safety of the whole system. Synchronization in multimodal feedback is hard to ensure and event-driven method is also good for it. Experiments on an Internet-based shaft-hole assemblage system show good results by using event synchronization communication driven method and UDP protocol.

Evaluating Communicative Teaching Method With Consideration of Psycholinguistics

Communicative language teaching has been in vogue in the past ten years. Being a language teaching method, it is closely related to linguistics, sociology, educeational theories and so on, psycholinguistics, a branch of linguistics focusing on the mental processes involved in human being's language acquisition and production, play a most important role in the study of language teaching, including communicative language teaching (CLT) of course. In this paper the writer will evaluate the CLT with the consideration of psycholinguistics to what extent CLT is helpful for second language teaching and learning.……

A Study of Educational Change as Culture Change--a Comparison of the Grammar-Translation Method and Communicative Language Teaching Method

The world is complex and increasingly changing.The old education theory and the education model are greatly impacted,and it is difficult to meet the challenge of social change.To adapt to the changing society,education must conform to the social changes,grasp the direction of change,to seek a new position.This paper uses the theory of"educational culture"to explain the change from the Grammar Translation Method(GTM)to the Communicative Language Teaching(CLT)method.Two different teaching methods are two different concepts,representing two different cultural connotations.

On Errors in Chinese-English Translation of Public Signs

With more attentions being paid to the research of the Chinese-English translation of public signs,errors and mistakes can be frequently observed in some places and occasions due to different cultural backgrounds as well as diversified function of public signs.For that reason,the author venture to analyses the problems existing in Chinese-English translation of public signs on the level of linguistic and culture such as spelling errors,harsh tones and so on.Meanwhile the author offer some strategies and principles of translation based on the communicative translation method and as well as the quality of translators perspectives,including the methods of functional priority,of utilization of Pin Yin and so on,hoping to optimize the quality of the public signs translation so as to publicize China and promote the image of China and arose the attention and awareness of the translators.

Spatial diversity and combination technology using amplitude and phase weighting method for phase-coherent underwater acoustic communications

The UWA channel is characterized as a time-dispersive rapidly fading channel, which in addition exhibits Doppler instabilities and limited bandwidth. To eliminate inter- symbol interference caused by multipath propagation, spatial diversity equalization is the main technical means. The paper combines the passive phase conjugation and spatial processing to maximize the output array gain. It uses signal-to-noise-plus-interference to evaluate the quality of signals received at different channels. The amplitude of signal is weighted using Sigmoid function. Second order PLL can trace the phase variation caused by channel, so the signal can be accumulated in the same phase. The signals received at different channels need to be normal- ized. It adopts fractional-decision feedback diversity equalizer （FDFDE） and achieves diversity equalization by using different channel weighted coefficients. The simulation and lake trial data processing results show that, the optimized diversity receiving equalization algorithm can im- prove communication system＇s ability in tracking the change of underwater acoustic channel, offset the impact of multipath and noise and improve the performance of communication system. The performance of the communication receiving system is better than that of the equal gain combination. At the same time, the bit error rate （BER） reduces 1.8%.

To what extent should grammar be taught for the students of English majors in China？

The purpose of this paper is to show the importance of grammar teaching for the students of English majors in China and to provide an integrated teaching method for the teachers of English in China and colleagues in similar situations outside of China, through the analysis of the nature and role of grammar, of the importance of form depending upon the students＇ and instructional variables, and of using texts communicatively, in English teaching.

LET＇S ENJOY IT! --Students Learn Much Better in an Encouraging Communicative Class Atmosphere

Comparing the traditional teaching methods with the modem communicative teaching methods in language theory and also in teaching practice, students can learn much better in an encouraging communicative class atmosphere. The article analyzes the characteristics of an encouraging communicative class atmosphere and provides some practical methods to achieve it.

The Practice of English Grammar Teaching under Communicative Approach in Junior Middle School

The analyzing of the definition and principles of communicative approach and the current situation of the grammatically teaching points that the combination of both construction and practical knowledge of English language teaching in junior high school is the most ideal mode.Taking comparative grammar teaching of adjectives and adverbs as an example,this article explores how to teach grammar teaching in junior middle school under communicative teaching method.

BENEFITING FROM BOTH THE COMMUNICATIVE APPROACHES AND THE TRADITIONAL CHINESE METHODS IN ELT

For some time,ELT in China has been undergoing a heated discussion as to the best way ofteaching.Some think that the communicative approaches is inappropriate while others think that the tra-ditional Chinese methods are too old-fashioned.From various points of view,this paper argues that boththe communicative approach and the traditional Chinese methods can co-exist and influence each other inthe present Chinese teaching context.

An IPC-based Prolog design pattern for integrating backward chaining inference into applications or embedded systems

Prolog is one of the most important candidates to build expert systems and AI-related programs and has potential applications in embedded systems. However, Prolog is not suitable to develop many kinds of components, such as data acquisition and task scheduling, which are also crucial. To make the best use of the advantages and bypass the disadvantages, it is attractive to integrate Prolog with programs developed by other languages. In this paper, an IPC-based method is used to integrate backward chaining inference implemented by Prolog into applications or embedded systems. A Prolog design pattern is derived from the method for reuse, whose principle and definition are provided in detail. Additionally, the design pattern is applied to a target system, which is free software, to verify its feasibility. The detailed implementation of the application is given to clarify the design pattern. The design pattern can be further applied to wide range applications and embedded systems and the method described in this paper can also be adopted for other logic programming languages.