A Multi-Objective Optimization for Locating Maintenance Stations and Operator Dispatching of Corrective Maintenance

In this study,we introduce a novel multi-objective optimization model tailored for modern manufacturing,aiming to mitigate the cost impacts of operational disruptions through optimized corrective maintenance.Central to our approach is the strategic placement of maintenance stations and the efficient allocation of personnel,addressing a crucial gap in the integration of maintenance personnel dispatching and station selection.Our model uniquely combines the spatial distribution of machinery with the expertise of operators to achieve a harmonious balance between maintenance efficiency and cost-effectiveness.The core of our methodology is the NSGA Ⅲ+Dispatch,an advanced adaptation of the Non-Dominated Sorting Genetic Algorithm Ⅲ(NSGA-Ⅲ),meticulously designed for the selection of maintenance stations and effective operator dispatching.This method integrates a comprehensive coding process,crossover operator,and mutation operator to efficiently manage multiple objectives.Rigorous empirical testing,including a detailed analysis from a taiwan region electronic equipment manufacturer,validated the effectiveness of our approach across various scenarios of machine failure frequencies and operator configurations.The findings reveal that the proposed model significantly outperforms current practices by reducing response times by up to 23%in low-frequency and 28.23%in high-frequency machine failure scenarios,leading to notable improvements in efficiency and cost reduction.Additionally,it demonstrates significant improvements in oper-ational efficiency,particularly in selective high-frequency failure contexts,while ensuring substantial manpower cost savings without compromising on operational effectiveness.This research significantly advances maintenance strategies in production environments,providing the manufacturing industry with practical,optimized solutions for diverse machine malfunction situations.Furthermore,the methodologies and principles developed in this study have potential applications in various other sectors,including healthcare,transportation,and energy,where maintenance efficiency and resource optimization are equally critical.

Development of pulmonary hypertension remains a major hurdle to corrective surgery in Down syndrome

Down syndrome is the most common chromosomal abnormality encountered in clinical practice with 50%of them having associated congenital heart disease(CHD).Shunt lesions account for around 75%of all CHDs in Down syndrome.Down syndrome patients,especially with large shunts are particularly predisposed to early development of severe pulmonary hypertension(PH)compared with shunt lesions in general population.This necessitates timely surgical correction which remains the only viable option to prevent long term morbidity and mortality.However,despite clear recommendations,there is wide gap between actual practice and fear of underlying PH which often leads to surgical refusals in Down syndrome even when the shunt is reversible.Another peculiarity is that Down syndrome patients can develop PH even after successful correction of shunt.It is not uncommon to come across Down syndrome patients with uncorrected shunts in adulthood with irreversible PH at which stage intracardiac repair is contraindicated and the only option available is a combined heartlung transplant.However,despite the guidelines laid by authorities,the rates of cardiac transplant in adult Down syndrome remain dismal largely attributable to the high prevalence of intellectual disability in them.The index case presents a real-world scenario highlighting the impact of severe PH on treatment strategies and discrimination driven by the fear of worse outcomes in these patients.

Consolidating the Bilingual Education in the Major of Finance:Existing Defects and Corrective Measures

Under the trend of globalization and international financial integration,Chinese scholars have argued that executing bilingual education in the major of finance is necessary to advance the comprehensive quality and competitive ability of college students.However,universities attempting to implement bilingual education are procrastinated with many obstacles.To resolve this issue,corrective measures are to be given in the aspects of textbook publishing,professor training and curriculum adjustments.

Teachers' Oral Corrective Feedback and Its Influence on Learner Uptake in the Classes of Teaching English as a Foreign Language for Minority Students in Xinjiang Junior High Schools

The present study explored the features and the effectiveness of teachers' oral CF in the classrooms of Teaching English as a Foreign Language(TEFL) for minority students in Xinjiang junior high schools. The analytical framework of this study consulted Lyster's(1998) coding scheme. 720 minutes of classroom observation were recorded and transcribed. The database was coded and the distribution of errors, CF and uptake was analyzed.

Computer-aided Design and Custom-made Guide in Corrective Osteotomy for Complex Femoral Deformity

Summary： Preoperative planning of corrective osteotomy with traditional radiography has limitations in regards to determining the ideal osteotomy location and orientation in three-dimensional femoral de- formities. Though a successful operation can be planned preoperatively, intraoperative contingencies might adhere to the procedural plan in the performance of operation. To efficiently perform a planned procedure, proposed is a design to implement three-dimensional reconstruction photography, based on computer-tomography （CT） scan. A custom-made guide was designed to navigate the osteotomy as planned, and additionally, a personalized intramedullary nail was used for fixation after osteotomy. Three-dimensional （3D） photography of deformed femur was established based on the CT dataset and transferred into 3D photography processing software for further planning. Osteotomy planes were de- signed and adjusted at deformity sites to correct the 3D deformities. The methodology of a custom-made osteotomy guide was introduced in femoral corrective osteotomy, for the first time, to navigate the op- eration as planned. After the virtual osteotomy and reduction of bone segments, the parameters of a custom-made intramedullary nail were measured for manufacturing. Findings Virtual operation in computer shows complete correction of the 3D deformity. The osteotomy guide, obtained by rapid-prototyping techniques, navigates mimicking surgery on rapid-prototyping model of the involved femur as planned. Internal fixation was achieved using the custom-made intramedullary nail. Interpreta- tion three-dimensional visualization introduces an advantage in preoperative planning for corrective os- teotomy of 3D femoral deformity, and the custom-made osteotomy guide is crucial to realize such a de- liberate plan during the actual procedures. The internal fixator, such as an intramedullary nail, can be modified or personalized for fixation in unique cases.

Study of corrective abrasive finishing for plane surfaces using magnetic abrasive finishing processes

On the basis of ordinary plane magnetic abrasive finishing,a finishing method is proposed that can improve the flatness of a plane workpiece.In this method,the feed speed is varied during finishing according to the profile curve of the initial surface and the material removal efficiency,to control the effective finishing time in different areas and thereby improve the surface flatness.A small magnetic pole with an end face diameter of 1 mm is designed,and a ferromagnetic plate is placed under the workpiece to improve the uniformity of the magnetic field distribution near the magnetic pole.An experiment on an A5052 aluminum alloy plate workpiece shows that after 60 min of finishing using the proposed method,the extreme difference of the workpiece surface can be reduced from 14.317μm to 2.18μm,and the standard deviation can be reduced from 3.322μm to 0.417μm.At the same time,according to the measurement results,a similar flatness can be achieved at different positions on the finishing area.Thus,the proposed variable-speed finishing method leads to obvious improvements in flatness.

The Role of Non-verbal Behavior of Teachers in Providing Students Corrective Feedback and Their Consequences

Considering the primary focus of corrective feedback literature on verbal-correction provided by teachers and lack of attention to the role of other forms of corrective feedback in FL （foreign language） classroom interaction, this paper demonstrates how essential teachers＇ non-verbal communication and stance display are in making students＇ errors noticeable for them by providing samples from videotaped data. The findings in this study provide insights into the use of non-verbal behavior in providing students with corrective feedback. This study shows that research dealing only with verbal corrections provided by FL teachers cannot fully define the classroom interaction in terms of teachers＇ use of error correction techniques and student notification and uptake.

Effects of Written Corrective Feedback on College EFL Students’Writing Accuracy and Linguistic Knowledge Acquisition

Set at the interface between second language acquisition and second language writing,this study examines how different types of written corrective feedback(WCF)influence the writing accuracy of Chinese college students learning English as a Foreign Language(EFL)and whether WCF facilitates the students’grasp of the focused linguistic knowledge.The participants(n=60)were divided into direct correction group(n=20),indirect error-coding group(n=20)and metalinguistic explanation group(n=20).The three groups wrote four essays in two months and received WCF for the first three essays on the five targeted error types,namely tense errors,confusion of different forms of a word,word(articles,prepositions,etc.)missing,errors in subjectverb agreement and inappropriate verb-noun collocations.The results show that all three types of WCF improved students’writing accuracy but none of them had any statistical advantage,and the metalinguistic WCF was more effective than the other two forms in facilitating the acquisition of the targeted linguistic features.These results shed some light on teaching and consolidation of language points through writing in EFL contexts.

Macao Secondary School EFL Teachers' Perspectives on Written Corrective Feedback: Rationales and Constraints

Corrective feedback on writing(WCF)has been one of the most controversial topics in ESL/EFL teaching.In the past decades,much has been disputed regarding the effectiveness and preferences of the quantity,focus,directness and source of WCF.With so much uncertainty,the researcher set out to investigate how research-informed secondary school teachers in Macao reported their beliefs,rationales,practices and constraints of administering corrective feedback for EFL writing in Macao secondary schools.Twelve secondary school teachers were recruited at a TESOL conference to conduct focus-group discussions.Similar to previous findings,results suggest teachers had clear rationales as to their ways of practising WCF.However,many expressed difficulties in acting according to rationales and beliefs.Despite their experience and knowledge,practical constraints such as school policies and teacher workload made it unlikely for them to follow their thoughts with feedback on writing.This study identified six sources of constraints that could prohibit practices and potentially reshape ones’beliefs,which sheds light on future directions of WCF research.

Evaluating Chinese College Students' English Compositions:Different Writing Corrective Feedbacks between a Chinese Teacher and a Foreign Teacher & the Attitudes of College Students

The study aims to uncover the differences between a Chinese writing teacher and a foreign writing teacher in evaluating Chinese college students' English compositions and find out students' attitudes towards different kinds of feedbacks. The data collection method, sample analysis and questionnaire have been implemented to probe for the results. The results are supposed to give some suggestions to the English writing class in Chinese universities.

An Exploration of Beliefs and Implications of Corrective Feedback

Corrective feedback plays an important role in shaping children's behavior and their learning process;teacher also plays a central role in promoting students'motivation. Therefore, teacher's beliefs and how to implicate CF in the second language acquisition is a question worthwhile thinking.

Achieving Self-Imitation for English Intonation Learning:The Role of Corrective Feedback

Corrective feedback is crucial for pronunciation teaching.However,in current pronunciation teaching practice,the corrective feedback provided usually fails to locate pronunciation problems and inform learners of the differences between their mispronunciations and the correct form.Based on the motor theory,this study attempted to explore a new way of corrective feedback for pronunciation teaching.Specifically,the learners’ speech output was modified and then was played back to them as an input model for learning.In this way,the learners can imitate the pronunciation model of their own voices,achieving self-imitation.This study included two experiments.The first explored the viability of obtaining one’s self-perceived voice through delayed feedback paradigm.The second experiment examined the effectiveness of self-imitation for English intonation learning.Results showed that imitating the pronunciation model of one’s own voice can reduce the learners’ phonological memory load,assist critical listening and facilitate accurate phonetic realizations of the target intonation.

ANALYSIS OF HUMAN PLACENTA BY ^(31)P NUCLEAR MAGNETIC RESONANCE AND THIN-LAYER CHROMATOGRAPHY SCANNING COMBINED WITH THE CORRECTIVE METHOD OF ABSORBANCE PROPORTIONAL COEFFICIENT

Five phospholipids in human placenta were determined by phosphorus 31 nuclear magnetic resonance(^(31)P NMR)spectroscopy and thin-layer chromatography(TLC) scanning combined with the corrective method of absorbance proportional coefficient. The NMR spectrometer used this investigation was a Bruker AM-500 spectrometer operating at 202.4 MHz for ^(31)P chemical shifts are relative to 85% phosphoric acid. TIC was carried out by silica gel H plate developed in chloroform-methanol-glacial acetic acid-ethanol-water(25:4:6:2:0.5),with Vaskovsky reagent as colour -developing agent of phospholipids.

A Study of Written Corrective Feedback and Its Effect on Chinese Junior Learners＇ English Writing

This study was designed to investigate the effect of written corrective feedback （WCF） on junior English learners＇writing. Eighty-two Chinese junior students from two classes were observed in a draft-to-draft writing program.Results included error distribution and WCF＇s effect on the subjects＇ writing. Specifically, the number of localerrors dropped more significantly than that of global errors. Both direct feedback （DF） and indirect feedback （IF）worked for local errors, but they did not have noticeable effects on global errors. For some errors as wrong word,DF was almost helpless in eliminating them, but IF worked better since it could engage students in reflecting ontheir own errors. For Chinglish and word order errors, however, IF＇s role was very limited in revision andcorrection, due to students＇ inefficient syntactic knowledge. This study indicated that WCF had varying effects fordifferent types of errors and a combination of DF and IF might be more helpful. In addition, positive input andcertain amount of explicit grammar teaching are necessary for long-term improvement of accuracy in writing.

Is Recast the Most Effective Type of Corrective Feedback？ --Under Cognitive and Sociolinguistic Approach

Currently, there are a variety of researches on corrective feedback, especially on recasts. Most of researches are experiment-based and depend on the certain context. This paper addresses the question of ＂Is recast the most effective form of corrective feedback？＂ by two of Second Language Acquisition （SLA） approaches： cognitive approach and sociolinguistic approach. Empirical research will be used as complement. Theoretically speaking, SLA hypotheses in cognitive approach exist disagreements. Interaction hypothesis favors recast while both input hypothesis and output hypothesis doubt the effectiveness of it. Sociolinguistic approach underscores the significance of appropriate and timely corrective feedback and does not give more credit to certain strategy. Both approaches provide the pedagogical implications and elements to take into account for adopting recasts.

The Effect of Different Types of Corrective Feedback on L2 Writing Accuracy of college students

Since the process writing was raised in the L2 writing in 1970s, the feedback has been an important part of teaching. A range of researchers have investigated the effect of different types of error feedback to find whether the feedback can help L2 writers improve the accuracy of their writing. Similar to the previously discussed question, they have also reached rather controversial conclusions. Most often, these studies have categorized corrective feedback as either direct or indirect. To explore the effects of corrective feedback in L2 writing, the paper investigated the types of feedback given to 30 college students of Tianhe College in Guangdong province. The study improved that correction feedback can improve accuracy in student writing.

The Application of Corrective Feedback Theory in Integrated English Course

Integrated English Course in Chinese universities serves a group of non-English major students for the main educational training purpose of second language learning together with language learning skills development under different unit themes.In the process of learning another language,as language leaners,making mistakes is natural and inevitable.This procedure of making mistakes and correcting mistakes contribute to the gradual improvement from a starter to an advanced learner.Encountering mistakes made in various conditions in the classroom,teachers need to form proper awareness,and give appropriate feedback.

Effectiveness of Corrective Feedback on Writing

This study aims to find out the effectiveness of corrective feedback on ESL writing.By reviewing and analyzing the previous six research studies,the author tries to reveal the most effective way to provide corrective feedback for L2 students and the factors that impact the processing of error feedback.Findings indicated that corrective feedback is helpful for students to improve ESL writing on both accuracy and fluency.Furthermore,correction and direct corrective feedbacks as well as the oral and written meta-linguistic explanation are the most effective ways to help students improving their writing.However,in dividual learner's difference has influence on processing corrective feedback.At last,limitation of present study and suggestion for future research were made.

Research on Corrective Feedback in Foreign Language Teaching

Corrective feedback is an important part of second language acquisition, and many researches have showed that the corrective feedback in general have a positive effect on second language acquisition. The present study aims to investigate corrective feedback and draw enlightening conclusions:1) Different corrective feedback types have different effects on second language acquisition; 2)The effect of corrective feedback is also influenced by the feedback timing, explicitness of the feedback and learners' individual differences; 3) Teachers should consider feedback types, feedback timing, and individual differences of students based on teaching contents when providing corrective feedback in foreign language teaching.

The Effects of Learner’s Individual Differences on the Written Corrective Feedback

From the perspective of individual learner differences,this paper aims to show the readers an outline of the influence of individual learner differences on written corrective feedback.Based on 200 eighth and ninth grade junior high school students’thinking patterns and tests,60 students were selected as subjects in this study.Based on the comparative analysis and error analysis in second language acquisition as the main theoretical basis,this study analyzed the common types of errors in the use of nonpredicate verbs in junior high school students and their causes.There are three main questions in this study:how about the error frequency of the five forms(present participle,past participle,infinitive,gerund and independent nominative structure)in the nonpredicate verb learning of junior high school students?What kind of mistakes do junior high school students make in the process of learning non-predicate verbs?According to the conclusion of the investigation and research,the author puts forward some suggestions from the aspects of teachers and students in the last part of the article.