Application of Flipped Classroom Teaching Model Based on Micro-Course in Practical Training Teaching of Contact Lens Fitting Technology

Objective:This paper aims to study the application of flipped classroom teaching model based on micro-course in the practical training teaching of contact lens fitting technology.Methods:From September 21 to July 23,120 students majoring in ophthalmology and optometry were selected and randomly divided into groups.The control group adopted the traditional teaching mode,and the study group adopted the flipped classroom teaching mode based on micro-course.Teaching scores and the skills,observation and judgment,adaptability,and communication skills were compared between the groups.Results:Statistical comparison of teaching scores under different management methods showed that the clinical thinking score and practice work quality in the study group were higher than those of the control group,and the effect of the study group was better(P<0.05).The overall scores of skills,observation and judgment,adaptability,and communication skills of the study group were better than those in the control group,and the comprehensive ability scores in the two groups were significantly different(P<0.05).Conclusion:In practical training teaching of contact lens fitting technology,the application of flipped classroom teaching based on micro-course can improve the skill scores of personnel,and the overall effect is good.This can lay the foundation for advanced ophthalmology and optometry talents with profound theoretical knowledge and professional skills.

The technology and practice of water saving at Baosteel

With the development of the production scale and the increasing of the process technologies and facilities,product quality and the requirement of water supply continuously put forward new requirements to water treatment technology.The practice of the water saving technology should ensure the safe of water using and the innovation of technique data.Especially the stabilization of water quality should also meet the production at full capacity,reduce equipment failure rate and maintain the sustainable development under the condition of the minimal resource consumption.This article describes the practice of Baosteel saving technology,water-saving ideas from the system to start,according to Baosteel raw water intake requirements and process water and drainage characteristics,water and salt water tidal according to changes in the Yangtze River and the Yangtze River upstream and downstream trends in water discharge on water quality factors,established the electrical conductivity,chloride ion indicators for the control of the Yangtze River water,the implementation of 'avoid salt build light' water at the same time,combined with the actual situation of water pollution in the Yangtze River,the use of force coefficient correlation theory,the implementation of 'avoid taking clear pollution' to ensure the quality of raw water intake. System and cascade utilization of water,process water,based on whole plant water balance testing, analysis,technical parameters of the system and processes the user running the pressure balance pipe network,and implemented a stabilization system to adjust water pressure,reducing the water supply network systemwater loss;application of electrochemical principles,the implementation of the protection of underground pipes Baosteel,implemented a water use,steps to use,the operating mode of water supply in series to increase water reuse,reduce wastewater discharge system. Water quality stability and water-saving in the process;carry out water quality stability technology in the different complicated processes of the steel industry;apply the environmental protection and water quality, sterilization,non-phosphorus and low phosphorus technologies which are suitable for high concentration of circulating water.By these technologies,we achieved the water-saving in the process in different seasons and solved the technical problems affecting production such as equipment corrosion,scaling and the formation of the water quality proprietary technology under the conditions of high heat load production as well. The use of water ecological conservation and biological treatment technology:the implementation of the reservoir to the ecological technology is characterized by food chain and wetland environmental technology characterized by plants chain.Reservoir ecological management techniques in the use of natural conditions, wind direction,temperature,light and fish biomass in the reservoir water level regulation of balance and combination of organic,control and resolve the reservoirs in spring and summer algae problems and water quality changes rot of the 'fresh' operating problems.The artificial wetland technology develops a new way for metallurgical plants' wastewater treatment.All the measures by the implementation of water to create the conditions for the system to achieve the water target of constant innovation,reaching the advanced level of iron and steel enterprises.

MAGNETIC TREATMENT TECHNOLOGY APPLIED TO OILFIELD PRACTICE

Petroleum exploration is a strategic task for our country in its economic development.At present,petroleum production in most of east China’s oilfields is in the waning period after reaching a peak.To raise the oil recovery rate is a key measure for their production increase.Because of this,a major provision was included in the third cooperative protocol signed in 1986 by the

Smart City: Key Technologies and Practices

Ubiquitous sensors, devices, networks, and information are paving the way to smart cities in which computation and intelligence are pervasive. This enables reliable, relevant intormation and services to he accessible to all people. Smart objects, homes, hospitals, manufacturing, and systerns will eventually be present in every city.

Call for Papers ZTE Communications Special Issue on Smart City: Key Technologies and Practices

Though the smart city has been one of the hottest fields due to its great potentials to make our world smarter and more efficient with using digital technologies, it is still necessary to clarify what are fundamental infrastructures and platforms as well as successful practices for truly smart cities. Therefore, the ZTE special issue is focused on key technologies and representative practices in building smart cities. We solicit papers in the topics including but not limited to the following：

EXPLORATION AND PRACTICE IN ENGLISH TEACHING FOR DOCTORAL CANDIDATES OF SCIENCE AND TECHNOLOGY

IntroductionIn China doctoral candidates have to continue their English courses when they are working towardsdoctoral degrees.The syllabus requires them to have a good command of reading and writing,as well asa certain command of listening and speaking.In order to achieve these objectives,the English teachingfor Ph.D.students should focus on giving the students special training in the practical use of English.Careful Selection of Teaching MaterialsA textbook is an important factor in teaching,Therefore,we should be careful to choose which books weuse as our teaching materials.This means we should survey the interests of the students.Most of thedoctoral candidates have studied English for more than ten years.They are not learners at the first