The Construction of a Learning-Oriented Speaking Assessment Model in College English Based on the Online Diagnostic Assessment

Since language is a tool for communication,proficiency in English communication is a fundamental necessity for talent in the 21st century.However,surveys reveal that most college students at private colleges possess inadequate oral English skills,and what some have learned is“mute English.”Therefore,developing their English-speaking skills is another challenge faced by students attending private schools.Online diagnostic assessment methods are growing globally with the use of technology.UDig diagnostic assessment system is one of the online English diagnostic assessment platforms currently being widely used in China.Therefore,the present work is conducted to investigate and conduct an oral English learning-oriented assessment model in college English using the online diagnostic assessment.With the research result,it is hoped that the study could provide useful information for improving UDig system and make a better use of it in college oral English learning and teaching.

A Study on Cross-Cultural Communication and the Cultivation of Cross-Cultural Competence in German Language Teaching in Universities

In the concept of German,cross-cultural competence is regarded as an important skill,which can help learners to better understand the differences between two cultures and establish mutual cognition.This competence can effectively reduce unnecessary misunderstandings and improve communication efficiency.In college German classes,teachers should realize that cross-cultural communication skills are crucial to the development of students’communicative competence.Therefore,they should strive to improve their teaching methods and make the courses more interesting to help students to communicate better.

The shadow and observation appearance of black hole surrounded by the dust field in Rastall theory

In the context of Rastall gravity,the shadow and observation intensity casted by the new Kiselev-like black hole with dust field have been numerically investigated.In this system,the Rastall parameter and surrounding dust field structure parameter have considerable consequences on the geometric structure of spacetime.Considering the photon trajectories near the black hole,we investigate the variation of the radii of photon sphere,event horizon and black hole shadow under the different related parameters.Furthermore,taking into account two different spherically symmetric accretion models as the only background light source,we also studied the observed luminosity and intensity of black holes.For the both spherical accretions background,the results show that the decrease or increase of the observed luminosity depends on the value range of relevant parameters,and the promotion effect is far less obvious than the attenuation effect on the observed intensity.One can find that the inner shadow region and outer bright region of the black hole wrapped by infalling accretion are significantly darker than those of the static model,which is closely related to the Doppler effect.In addition,the size of the shadow and the position of the photon sphere are always the same in the two accretion models,which means that the black hole shadow depend only on the geometry of spacetime,while the observation luminosity is affected by the form of accretion material and the related spacetime structure.

AR Technology-Based Game for Finding Treasures in Museums

With the vigorous development of tourism and entertainment industry, the traditional way of museum information display has been increasingly unable to meet people’s growing entertainment needs. Benefiting from the development of AR technology, AR museum games, a method of combining traditional museums with emerging information technology, can transform the knowledge display of museums from boring learning to active exploration, thereby improving the fun of the journey. By combining the museum auxiliary guide with AR games, the story of the museum exhibits is processed with interest, and the knowledge display of the serious museum becomes more vivid. The design is based on Unity 3d platform, and the Vuforia plug-in and UGUI interface controls that can be stable and efficient for image recognition are used to complete the development of museum AR games.

Iterative Android automated testing

With the benefits of reducing time and workforce,automated testing has been widely used for the quality assurance of mobile applications(APPs).Compared with automated testing,manual testing can achieve higher coverage in complex interactive Activities.And the effectiveness of manual testing is highly dependent on the user operation process(UOP)of experienced testers.Based on the UOP,we propose an iterative Android automated testing(IAAT)method that automatically records,extracts,and integrates UOPs to guide the test logic of the tool across the complex Activity iteratively.The feedback test results can train the UOPs to achieve higher coverage in each iteration.We extracted 50 UOPs and conducted experiments on 10 popular mobile APPs to demonstrate IAAT’s effectiveness compared with Monkey and the initial automated tests.The experimental results show a noticeable improvement in the IAAT compared with the test logic without human knowledge.Under the 60 minutes test time,the average code coverage is improved by 13.98%to 37.83%,higher than the 27.48%of Monkey under the same conditions.