Polar residual network model for assisting evaluation on rat myocardial infarction segment in myocardial contrast echocardiography

Objective To investigate the value of polar residual network(PResNet)model for assisting evaluation on rat myocardial infarction(MI)segment in myocardial contrast echocardiography(MCE).Methods Twenty-five male SD rats were randomly divided into MI group(n=15)and sham operation group(n=10).MI models were established in MI group through ligation of the left anterior descending coronary artery using atraumatic suture,while no intervention was given to those in sham operation group after thoracotomy.MCE images of both basal and papillary muscle levels on the short axis section of left ventricles were acquired after 1 week,which were assessed independently by 2 junior and 2 senior ultrasound physicians.The evaluating efficacy of MI segment,the mean interpretation time and the consistency were compared whether under the assistance of PResNet model or not.Results No significant difference of efficacy of evaluation on MI segment was found for senior physicians with or without assistance of PResNet model(both P>0.05).Under the assistance of PResNet model,the efficacy of junior physicians for diagnosing MI segment was significantly improved compared with that without the assistance of PResNet model(both P<0.01),and was comparable to that of senior physicians.Under the assistance of PResNet model,the mean interpretation time of each physician was significantly shorter than that without assistance(all P<0.001),and the consistency between junior physicians and among junior and senior physicians were both moderate(Kappa=0.692,0.542),which became better under the assistance(Kappa=0.763,0.749).Conclusion PResNet could improve the efficacy of junior physicians for evaluation on rat MI segment in MCE images,shorten interpretation time with different aptitudes,also improve the consistency to some extent.

Deep learning models for automatic classification ofechocardiographic views

Objective To observe the value of deep learning (DL) models for automatic classification of echocardiographic views. Methods Totally 100 patients after heart transplantation were retrospectively enrolled and divided into training set, validation set and test set at a ratio of 7 ∶ 2 ∶ 1. ResNet18, ResNet34, Swin Transformer and Swin Transformer V2 models were established based on 2D apical two chamber view, 2D apical three chamber view, 2D apical four chamber view, 2D subcostal view, parasternal long-axis view of left ventricle, short-axis view of great arteries, short-axis view of apex of left ventricle, short-axis view of papillary muscle of left ventricle, short-axis view of mitral valve of left ventricle, also 3D and CDFI views of echocardiography. The accuracy, precision, recall, F1 score and confusion matrix were used to evaluate the performance of each model for automatically classifying echocardiographic views. The interactive interface was designed based on Qt Designer software and deployed on the desktop. Results The performance of models for automatically classifying echocardiographic views in test set were all good, with relatively poor performance for 2D short-axis view of left ventricle and superior performance for 3D and CDFI views. Swin Transformer V2 was the optimal model for automatically classifying echocardiographic views, with high accuracy, precision, recall and F1 score was 92.56%, 89.01%, 89.97% and 89.31%, respectively, which also had the highest diagonal value in confusion matrix and showed the best classification effect on various views in t-SNE figure. Conclusion DL model had good performance for automatically classifying echocardiographic views, especially Swin Transformer V2 model had the best performance. Using interactive classification interface could improve the interpretability of prediction results to some extent.

Deep learning echocardiographic intelligent model for evaluation on left ventricular regional wall motion abnormality

Objective To observe the value of deep learning echocardiographic intelligent model for evaluation on left ventricular(LV)regional wall motion abnormalities(RWMA).Methods Apical two-chamber,three-chamber and four-chamber views two-dimensional echocardiograms were obtained prospectively in 205 patients with coronary heart disease.The model for evaluating LV regional contractile function was constructed using a five-fold cross-validation method to automatically identify the presence of RWMA or not,and the performance of this model was assessed taken manual interpretation of RWMA as standards.Results Among 205 patients,RWMA was detected in totally 650 segments in 83 cases.LV myocardial segmentation model demonstrated good efficacy for delineation of LV myocardium.The average Dice similarity coefficient for LV myocardial segmentation results in the apical two-chamber,three-chamber and four-chamber views was 0.85,0.82 and 0.88,respectively.LV myocardial segmentation model accurately segmented LV myocardium in apical two-chamber,three-chamber and four-chamber views.The mean area under the curve(AUC)of RWMA identification model was 0.843±0.071,with sensitivity of(64.19±14.85)%,specificity of(89.44±7.31)%and accuracy of(85.22±4.37)%.Conclusion Deep learning echocardiographic intelligent model could be used to automatically evaluate LV regional contractile function,hence rapidly and accurately identifying RWMA.

“本心”的追问——以《新唯识论》“明宗”章与“唯识”章为例

熊十力先生反对将"体""用"截成"两片",并看到了宇宙发生流行中海沤不二的终极本体,但是熊先生却又将心分为"本心"和"习心"。我们可以追问,若是"体用不二","本心"与"习心"何以截分?或者说"本心"和"习心"的关系如何?"境不离识",可同样"识与境存",而"识"(习心)本即是"本心"的流行,在新的意义上可以说"境不空"而"识亦不妄","本心"即是"习心",心本无二。

On Second Language Learners＇ Lexical Competence

The paper discusses SL learners＇ lexical competence from O＇Connor＇s Five Steps of Vocabulary Acquisition Theory, Collins ＆ Loftus＇s Semantic Network Theory and Fay ＆ Cutler＇s Mental Lexicon Theory. From the discussion, the author finds that second language learners＇ lexical competence includes the following aspects： the ability to recall the words which are similar to the target words in spelling and pronunciation; the ability to recall the synonyms of the target words; the ability to recall the antonyms of the target words; and the ability to recall the related words which come together with the target words in a context. Meanwhile it advances some strategies to develop the corresponding competence.

The psychological teaching approach to basic foreign language teaching

Basic foreign language teaching for language majors plays a significant role in the process of foreign language teaching and is also a crucial stage in the training of foreign language talents. During the stage teachers should learn about students＇ learning motives and the beginners＇ psychological state to rouse students＇ interest and mobilize their initiatives so that students can change from passive learning to active learning. The teaching effects will thereby be substantially enhanced.

Comparison between type-2 and type-1 myocardial infarction：clinical features, treatment strategies and outcomes

Objective To assess the differences in incidence, clinical features, current treatment strategies and outcome in patients with type-2vs. type-1 acute myocardial infarction （AMI）.Methods We included 824 consecutive patients with a diagnosis of type-1 or type-2 AMI. Dur-ing index hospitalization, clinical features and treatment strategies were collected in detail. At 1-year follow-up, mortality, stroke, non-fatal myocardial infarction and major bleeding were recorded.ResultsType-1 AMI was present in 707 （86%） of the cases while 117 （14%） were classified as type-2. Patients with type-2 AMI were more frequently female and had higher co-morbidities such as diabetes, previous non-ST segment elevation acute coronary syndromes, impaired renal function, anaemia, atrial fibrillation and malignancy. However, preserved left ventricular ejection fraction and normal coronary arteries were more frequently seen, an invasive treatment was less common, and anti-platelet medications, statins and beta-blockers were less prescribed in patients with type-2 AMI. At 1-year follow-up, type-2 AMI was associated with a higher crude mortality risk （HR： 1.75, 95% CI： 1.14-2.68;P = 0.001）, but this association did not remain significant after multivariable adjustment （P = 0.785）. Furthermore, we did not find type-2 AMI to be associated with other clinical outcomes.Conclusions In this real-life population, compared with type-1, type-2 AMI were predominantly women and had more co-morbidities. Invasive treatment strategies and cardioprotective medications were less used in type-2, while the 1-year clinical outcomes were similar.

The Application of Constructivism Theory to the Student-determined College English Learning

According to the further exploration into constructivism theory, the author illustrates the application of this theory to China＇s college English teaching, especially in the new perspective of student-determined learning.

Errors in Language Learning

Researchers have realized the importance of focusing on learners＇ errors. Then, as teachers, how should we treat students＇ errors in their second language acquisition？ This essay attempts to overview the background theories about learners＇ errors, especially those committed in the process of second language acquisition, and more importantly, to give some suggestions on how to deal with students＇ errors in the process of second language acquisition.

Validity and reliability of eating disorder assessments used with athletes： A review

Background： Prevalence of eating disorders （EDs） among college-aged athletes has risen in recent years. Although measures exist for assessing EDs, these measures have not been thoroughly reviewed in athletes. This study reviewed the validity and reliability evidence of the commonly used measures for assessing EDs in athlete populations aged 18--26 years. Methods： Databases were searched for studies of regarding ED on male and/or female athletes. Inclusion criteria stated the study （a） assessed EDs in an athlete population 18--26 years of age and （b） investigated EDs using a psychometric measure found valid and/or reliable in a non- athlete population and/or athlete population. Results： Fifty studies met the inclusion criteria. Seven and 22 articles, respectively, studied EDs behaviors in male and female athletes whereas 21 articles studied EDs in combined-gender samples. The five most commonly used measures were the Eating Attitudes Test （EAT）, Eating Disorder Inventory （EDI）, Bulimia Test-Revised （BULIT-R）, Questionnaire for Eating Disorder Diagnosis （QEDD）, and the Eating Disorder Examination Questionnaire （EDE-Q）. Conclusion： Only seven studies calculated validity coefficients within the study whereas 47 cited the validity coefficient. Twenty-six calculated a reliability coefficient whereas 47 cited the reliability of the ED measures. Four studies found validity evidence for the EAT, EDI, BULIT-R, QEDD, and EDE-Q in an athlete population. Few studies reviewed calculated validity and reliability coefficients of ED measures. Cross- validation of these measures in athlete populations is clearly needed.

Sports Games Theory and Practice of Teaching in Physical Fitness

The prevalence of physical fitness is for school to teach methods single-issue research, students try to find suitable ways and means of physical and mental exercise, play sports and fitness educational value of the original features. The traditional physical education is to become a vibrant so that life becomes boring exercises. The students＇ passive learning is for active participation, so that physical exercise achieves sterile body, sterile heart function, rich life, regulating mood, emotional exchange, harmonious sense of community for students to experience the joy of sports environment to promote the development of students＇ physical and mental health.

Research on College English Teaching Model Based on Multimedia and Network

Based on multimedia and network environment, college English teaching mode can effectively improve the teaching environment of traditional English teaching and students, and expand the capacity of English classroom information, and enrich the students’ English culture background. Therefore, as a teacher, we should first of all make efforts to learn new knowledge and teaching methods to improve our English professional quality. Strengthening the multimedia, network technology and educational psychology research, and put themselves in the teaching position. In addition, the college English teaching model based on multimedia and network environment can cultivate students’ independent thinking, autonomous learning, analysis and problem - solving ability, and promote the high efficiency of college English teaching.

What Is Going on in the Minds of Translators？ A Review of Studies on Translation Process

Border areas have provided significant new research questions as well as fruitful insights and hypotheses. The cognitive and neuropsychologic study of translation process is a good example of this kind. This paper has surveyed various researches on translation process. Studies related to ＂the black box of translation＂ are divided into two categories, i.e., studies adopting think-aloud protocols, and studies from the physiology and neuroscientific perspectives. It has been noted that those studies on translation process have made some progress in the past years Firstly, the participants have undergone a change from language learners to professional translators or interpreters Secondly, the purposes of the studies have a tendency of gradually becoming specific. Thirdly, more rigorous methodologies have been developed, with more and more new technological approaches being applied

Incremental learning of the triangular membership functions based on single-pass FCM and CHC genetic model

In order to improve the efficiency of learning the triangular membership functions( TMFs) for mining fuzzy association rule( FAR) in dynamic database,a single-pass fuzzy c means( SPFCM)algorithm is combined with the real-coded CHC genetic model to incrementally learn the TMFs. The cluster centers resulting from SPFCM are regarded as the midpoint of TMFs. The population of CHC is generated randomly according to the cluster center and constraint conditions among TMFs. Then a new population for incremental learning is composed of the excellent chromosomes stored in the first genetic process and the chromosomes generated based on the cluster center adjusted by SPFCM. The experiments on real datasets show that the number of generations converging to the solution of the proposed approach is less than that of the existing batch learning approach. The quality of TMFs generated by the approach is comparable to that of the batch learning approach. Compared with the existing incremental learning strategy,the proposed approach is superior in terms of the quality of TMFs and time cost.

How to Apply Humanistic Psychology to Establish an Effective Emotional Class Climate in China

To enhance students＇ all-around development and personal potential is the main purpose that teachers want to obtain in their teachings. The author believes that it can be achieved only in a relaxed and safe class atmosphere. The article introduces the humanistic psychology and illustrates how to apply humanistic psychology to the foreign language class and establish an effective emotional class climate in China.

Skills of English Vocabulary Teaching in Middle School

Words are the basic material of language. Vocabulary is one of the important standards for measuring English levels. Mastering a certain amount of vocabulary is the key to learning English well. However, the obstructions of learning vocabulary still exist. According to students＇ psychological features, the author discusses fresh and flexible ways of English vocabulary teaching. It makes vocabulary teaching vivid and easy to understand and memorize. This paper discusses some methods that how the teachers learn to teach words and how the students learn to grasp words, which based on the importance and the current situation of vocabulary teaching in middle school.

Implications of Reportage Texts in EFL Teaching

In this paper, the author discusses implications of original reportage texts in EFL teaching and learning from the perspectives of socio-linguistics and pragmatic competence. The author also discusses a proper approach for teaching medical postgraduate students, which is centered on students and based on research. This approach for teaching and leaning has been proved effective and students have improved in their socio-linguistic and pragmatic competences. This approach should have implications to EFL teachers who teach students of other specialties.

A Study of the Main Obstacles to the Development of Advanced Lexical Competence

The present study is to explore the main obstacles to the development of lexical competence in advanced English study. It is conducted by having questionnaires and interviews among 220 students and by analyzing the teaching materials. The findings to the study indicate that the main obstacles are caused from the following aspects： neglecting the importance of developing vocabulary in the advanced study; neglecting activating the students＇ directing sense and detecting sense to difficult words; low rate of word recurrence in the teaching materials; requiring distinguishing the shade of the difference between synonyms excessively and too meticulously; overemphasizing the ＂negative transfer＂ of mother tongue; and some other obstacles to the development of lexical competence.

Stress and coping styles among nursing students during the initial period of the clinical practicum:A cross-section study

Objectives:This study aimed to explore the level of stress,types of stressors,type of coping styles,and factors influencing stress levels and coping styles among nursing students during the initial period of the clinical practicum.Methods:A cross-sectional survey design was used.In September 2017,participants were recruited from a tertiary hospital in Zhejiang Province,China,using a convenience sampling method.A demographic characteristics questionnaire,the Intern Nursing Student Stressor Scale,and the Simple Coping Style Questionnaire were used to collect data.Data were analyzed using descriptive analysis,independent sample t-tests,one-way analysis of variance,Pearson’s correlation analysis,and multiple linear regres-sion analysis.Results:A total of 158 nursing students were recruited,most of whom were female,undergraduates,and from rural areas.The nursing students perceived a moderate level of stress during the initial period of the clinical practicum.The need for knowledge and skills was the most common source of stress.Positive coping styles were most commonly adopted.Nursing students who were undergraduates,only children,and chose nursing major involuntarily experienced higher stress levels than those who were junior college students,not only children,and chose nursing major voluntarily.Nursing undergraduates were more likely to use positive coping styles than junior college students.Male nursing students and those experiencing higher stress levels related to the“environment and equipment of the wards”and the“nature and content of the work”were more likely to use negative coping styles.Conclusion:Nursing educators should offer targeted guidance based on the stress reported during the clinical practicum and the demographic characteristics of the nursing students.Guidance should be provided to encourage nursing students to adopt effective coping strategies and reduce stress.

Second-order problem solving:Nurses'perspectives on learning from.near misses

Objectives:Near misses happen more frequently than actual errors,and highlight system vulnerabilities without causing any harm,thus provide a safe space for organizational learning.Second-order problem solving behavior offers a new perspective to better understand how nurses promote learning from near misses to improve organizational outcomes.This study aimed to explore frontline nurses’perspectives on using second-order problem solving behavior in learning from near misses to improve patient safety.Methods:A qualitative exploratory study design was employed.This study was conducted in three tertiary hospitals in east China from June to November 2015.Purposive sampling was used to recruit 19 frontline nurses.Semi-structured interviews and a qualitative directed content analysis was undertaken using Crossan’s 4I Framework of Organizational Learning as a coding framework.Results:Second-order problem solving behavior,based on the 4I Framework of Organizational Learning,was referred to as being a leader in exposing near misses,pushing forward the cause analysis within limited capacity,balancing the active and passive role during improvement project,and promoting the continuous improvement with passion while feeling low-powered.Conclusions:4I Framework of Organizational Learning can be an underlying guide to enrich frontline nurses’role in promoting organizations to learn from near misses.In this study,nurses displayed their pivotal role in organizational learning from near misses by using second-order problem solving.However,additional knowledge,skills,and support are needed to maximize the application of second-order problem solving behavior when near misses are recognized.