The black-phase formamidine-lead iodide(α-FAPbI_(3)),boasting an optimal bandgap of 1.5 eV,stands out as a premier choice for narrow-bandgap perovskite solar cells(PSCs),achieving a certified power conversion efficie...The black-phase formamidine-lead iodide(α-FAPbI_(3)),boasting an optimal bandgap of 1.5 eV,stands out as a premier choice for narrow-bandgap perovskite solar cells(PSCs),achieving a certified power conversion efficiency(PCE)of 26.1%[1−5].This impressive performance hinges on the orderly and homogeneous crystallization ofα-phase pure FAPbI_(3),facilitated by coordinating solvents such as dimethyl sulfoxide(DMSO)to form intermediates like PbI_(2)-DMSO complex(D-complex).The D-complex plays a pivotal role in crystallization thermodynamics,enabling the direct formation of α-FAPbI_(3) without the photoinactiveδ-phase[6−9].However,DMSO,a commonly used coordinating solvent,is highly hygroscopic and prone to hydration upon moisture exposure.This tendency leads to incomplete perovskite crystallization and accelerates the transformation of α-FAPbI_(3) into itsδ-phase[2,10].Consequently,the best-performing α-FAPbI_(3)PSCs must be processed in an inert atmosphere with strictly controlled relative humidity(RH)and suffers from relatively poor reproducibility.Given the hard-to-control atmosphere at industrial scale,it is challenging yet imperative to eliminate the negative effects stemming from hygroscopic coordinating solvents[11−13].展开更多
Research of autonomous manufacturing systems is motivated both by the new technical possibilities of cyber-physical systems and by the practical needs of the industry.Autonomous operation in semi-structured industrial...Research of autonomous manufacturing systems is motivated both by the new technical possibilities of cyber-physical systems and by the practical needs of the industry.Autonomous operation in semi-structured industrial environments can now be supported by advanced sensor technologies,digital twins,artificial intelligence and novel communication techniques.These enable real-time monitoring of production processes,situation recognition and prediction,automated and adaptive(re)planning,teamwork and performance improvement by learning.This paper summarizes the main requirements towards autonomous industrial robotics and suggests a generic workflow for realizing such systems.Application case studies will be presented from recent practice at HUN-REN SZTAKI in a broad range of domains such as assembly,welding,grinding,picking and placing,and machining.The various solutions have in common that they use a generic digital twin concept as their core.After making general recommendations for realizing autonomous robotic solutions in the industry,open issues for future research will be discussed.展开更多
Translation regulation is an important layer of gene expression:Generation of genome-wide expression datasets at multi-omics levels in spatial,temporal,and cell-type resolution is essential for deciphering brain compl...Translation regulation is an important layer of gene expression:Generation of genome-wide expression datasets at multi-omics levels in spatial,temporal,and cell-type resolution is essential for deciphering brain complexity.Regulation of gene expression is a highly dynamic process aiming at the production of precise levels of gene products to guarantee optimal cellular function,in response to physiological cues.Speedy advances in next-generation sequencing enabled the understanding of epigenomic and transcriptomic dynamic landscapes of different brain regions along development,aging,and disease progression.However,the correlation of the“transcriptome”with protein levels is poor because numerous mRNAs are subjected to manipulation of their translation efficiency,to warrant a favorable result under certain conditions.Hence,it is widely accepted that regulation at the translation level is a vital layer of gene expression.Quantification of actively translated mRNA populations(i.e.,“translatome”)is a more reliable predictor of the“proteome”(Wang et al.,2020).展开更多
Artificial intelligence(AI)can be used to tackle problems that are difficult or impractical to solve using traditional methods.In general,the fundamental goals of AI are to enable machines to possess sensing(e.g.,spee...Artificial intelligence(AI)can be used to tackle problems that are difficult or impractical to solve using traditional methods.In general,the fundamental goals of AI are to enable machines to possess sensing(e.g.,speech recognition,natural language understanding,and/or computer vision),problem-solving/decision-making(e.g.,searching and/or planning),and acting(e.g.,robotics)capabilities that only humans or other intelligent creatures would naturally have.展开更多
It is noticeable that the academic papers written by Chinese English learners are lacking in academic features largely due to their poor ability to use nominalization.Therefore,the instruction of nominalization in an ...It is noticeable that the academic papers written by Chinese English learners are lacking in academic features largely due to their poor ability to use nominalization.Therefore,the instruction of nominalization in an academic English writing course is badly needed.The author conducted onesemester-long instruction of nominalization to 90 non-English majors under the guidance of the production-oriented approach(POA).This research demonstrated how to apply POA,specifically,the enabling procedure to the teaching of nominalization.By triangulating the data of students’interviews,learning journals and written output,and the data of 4 teachers’class observations and interviews,this study found that the accurate application of the three criteria of effective enabling contributed to the improvement of the quantity and quality of nominalization in academic writing.展开更多
Enabling as the second phase of the Production-Oriented Approach(POA)instruction(Wen,2015),plays a vital role in determining the quality of productive performance of English language learners.To explore how to apply t...Enabling as the second phase of the Production-Oriented Approach(POA)instruction(Wen,2015),plays a vital role in determining the quality of productive performance of English language learners.To explore how to apply theoretical principles of enabling to practice,this paper interprets theoretical principles and reports the practice of the classroom implementation of enabling.The paper proposes a definition for enabling,clarifies the confusion between enabling and scaffolding,and clears up some misunderstandings about enabling.It explains three criteria for effective enabling,namely,alignment,gradualness,and variety,and elaborates on the relations among them.Based on the teaching material of Unit 7 of iEnglish,the paper demonstrates how to design and implement enabling activities under the guidance of these three criteria and evaluates the actual effectiveness of the enabling implemented in the classroom.展开更多
With the rapid development of maritime activities, there has been a growing demand for high data rate and ultra-reliable maritime communications. Traditionally, this is provided by maritime satellites. Besides, shore ...With the rapid development of maritime activities, there has been a growing demand for high data rate and ultra-reliable maritime communications. Traditionally, this is provided by maritime satellites. Besides, shore and island-based base stations (BSs) can be built to extend the coverage of terrestrial networks providing the fourth-generation (4G) or even the fifth-generation (5G) services. Unmanned aerial vehicles (UAVs)-aided and ship-borne BSs can also be exploited to serve as relaying nodes in maritime mesh/ad-hoc networks. Despite all these approaches, there are still open issues towards the establishment of an agile maritime communication network (MCN). Different from terrestrial communications for urban or suburban coverage, the MCN faces several challenges due to the complicated electromagnetic propagation environment, the limited geometrically available BS sites, and rigorous service demands from mission-critical applications. To address all these challenges, conventional communications and networking theories and methods need to be tailored for maritime application scenarios or new ones should be explored. The goal of this feature topic is to present the state-of-the-art original research, and the latest advances and innovations in key theories, technologies, and innovative applications for agile MCNs, as well as identify emerging research topics and point out the future research directions. Extended versions of papers published in conferences, symposiums, or workshop proceedings are encouraged for consideration.展开更多
With the rapid development of maritime activities, there has been a growing demand for high data rate and ultra-reliable maritime communications. Traditionally,this is provided by maritime satellites. Besides, shore a...With the rapid development of maritime activities, there has been a growing demand for high data rate and ultra-reliable maritime communications. Traditionally,this is provided by maritime satellites. Besides, shore and island-based base stations (BSs) can be built to extend the coverage of terrestrial networks providing the fourth-generation (4G) or even the fifth-generation (5G) services.展开更多
<div style="text-align:justify;"> <span style="font-family:Verdana;">Supporting higher education with modern technologies like E-Learning is very important for one country to improve qu...<div style="text-align:justify;"> <span style="font-family:Verdana;">Supporting higher education with modern technologies like E-Learning is very important for one country to improve quality of education, to meet student’s expectations and to continue teaching-learning and training when face to face education is impossible. However, it is in its preliminary stage in developing countries like Ethiopia. This study examined the enabling factors, difficulties and opportunities of E-Learning implementation in Assosa University (ASU), Ethiopia. Its purpose is to find the enabling factors, difficulties and opportunities of E-Learning implementation in ASU and developing prototype of E-Learning system to show its practicality and to identify approaches of students’ and lecturers towards E-Learning. The study employed questionnaires, observation and interview to gather the required information. A sample of 309 students and 64 Lecturers randomly selected from 7 colleges and two schools as well as ICT workers and other concerned bodies in the university. Also prototyping as a methodology was used to implement and test the proposed system for proof of concept. This study investigating the possibility of implementing E-Learning in ASU and important enablers, difficulties and opportunities is identified. Also the E-Learning platform of the university is developed and introduced for students and lecturers to show its practicality. Most students and lecturers showed good motivation in E-Learning implementation and they assumed that it is useful for the university. The result shows that although there are difficulties to implement E-Learning in ASU, the possibility of fully implementing E-Learning in the University is relatively high with mixed method. With this, the approaches of students and lecturers are positively viewed and the opportunities are very noticeable in the University. So, conventional higher education can practically implement E-Learning with mixed approach to use as supportive tool for educational improvements and to reduce physical presence.</span> </div>展开更多
基金support from the National Natural Science Foundation of China(Grant Nos.62205154 and 62288102)the Natural Science Research Start-up Foundation of Recruiting Talents of Nanjing University of Posts and Telecommunications(Grant No.NY221112).
文摘The black-phase formamidine-lead iodide(α-FAPbI_(3)),boasting an optimal bandgap of 1.5 eV,stands out as a premier choice for narrow-bandgap perovskite solar cells(PSCs),achieving a certified power conversion efficiency(PCE)of 26.1%[1−5].This impressive performance hinges on the orderly and homogeneous crystallization ofα-phase pure FAPbI_(3),facilitated by coordinating solvents such as dimethyl sulfoxide(DMSO)to form intermediates like PbI_(2)-DMSO complex(D-complex).The D-complex plays a pivotal role in crystallization thermodynamics,enabling the direct formation of α-FAPbI_(3) without the photoinactiveδ-phase[6−9].However,DMSO,a commonly used coordinating solvent,is highly hygroscopic and prone to hydration upon moisture exposure.This tendency leads to incomplete perovskite crystallization and accelerates the transformation of α-FAPbI_(3) into itsδ-phase[2,10].Consequently,the best-performing α-FAPbI_(3)PSCs must be processed in an inert atmosphere with strictly controlled relative humidity(RH)and suffers from relatively poor reproducibility.Given the hard-to-control atmosphere at industrial scale,it is challenging yet imperative to eliminate the negative effects stemming from hygroscopic coordinating solvents[11−13].
基金supported by the European Union within the framework of the“National Laboratory for Autonomous Systems”(No.RRF-2.3.1-212022-00002)the Hungarian“Research on prime exploitation of the potential provided by the industrial digitalisation(No.ED-18-2-2018-0006)”the“Research on cooperative production and logistics systems to support a competitive and sustainable economy(No.TKP2021-NKTA-01)”。
文摘Research of autonomous manufacturing systems is motivated both by the new technical possibilities of cyber-physical systems and by the practical needs of the industry.Autonomous operation in semi-structured industrial environments can now be supported by advanced sensor technologies,digital twins,artificial intelligence and novel communication techniques.These enable real-time monitoring of production processes,situation recognition and prediction,automated and adaptive(re)planning,teamwork and performance improvement by learning.This paper summarizes the main requirements towards autonomous industrial robotics and suggests a generic workflow for realizing such systems.Application case studies will be presented from recent practice at HUN-REN SZTAKI in a broad range of domains such as assembly,welding,grinding,picking and placing,and machining.The various solutions have in common that they use a generic digital twin concept as their core.After making general recommendations for realizing autonomous robotic solutions in the industry,open issues for future research will be discussed.
基金funded by the Israel Science Foundation(grants No.1036/12 and 1228/20)(to OES).
文摘Translation regulation is an important layer of gene expression:Generation of genome-wide expression datasets at multi-omics levels in spatial,temporal,and cell-type resolution is essential for deciphering brain complexity.Regulation of gene expression is a highly dynamic process aiming at the production of precise levels of gene products to guarantee optimal cellular function,in response to physiological cues.Speedy advances in next-generation sequencing enabled the understanding of epigenomic and transcriptomic dynamic landscapes of different brain regions along development,aging,and disease progression.However,the correlation of the“transcriptome”with protein levels is poor because numerous mRNAs are subjected to manipulation of their translation efficiency,to warrant a favorable result under certain conditions.Hence,it is widely accepted that regulation at the translation level is a vital layer of gene expression.Quantification of actively translated mRNA populations(i.e.,“translatome”)is a more reliable predictor of the“proteome”(Wang et al.,2020).
文摘Artificial intelligence(AI)can be used to tackle problems that are difficult or impractical to solve using traditional methods.In general,the fundamental goals of AI are to enable machines to possess sensing(e.g.,speech recognition,natural language understanding,and/or computer vision),problem-solving/decision-making(e.g.,searching and/or planning),and acting(e.g.,robotics)capabilities that only humans or other intelligent creatures would naturally have.
文摘It is noticeable that the academic papers written by Chinese English learners are lacking in academic features largely due to their poor ability to use nominalization.Therefore,the instruction of nominalization in an academic English writing course is badly needed.The author conducted onesemester-long instruction of nominalization to 90 non-English majors under the guidance of the production-oriented approach(POA).This research demonstrated how to apply POA,specifically,the enabling procedure to the teaching of nominalization.By triangulating the data of students’interviews,learning journals and written output,and the data of 4 teachers’class observations and interviews,this study found that the accurate application of the three criteria of effective enabling contributed to the improvement of the quantity and quality of nominalization in academic writing.
文摘Enabling as the second phase of the Production-Oriented Approach(POA)instruction(Wen,2015),plays a vital role in determining the quality of productive performance of English language learners.To explore how to apply theoretical principles of enabling to practice,this paper interprets theoretical principles and reports the practice of the classroom implementation of enabling.The paper proposes a definition for enabling,clarifies the confusion between enabling and scaffolding,and clears up some misunderstandings about enabling.It explains three criteria for effective enabling,namely,alignment,gradualness,and variety,and elaborates on the relations among them.Based on the teaching material of Unit 7 of iEnglish,the paper demonstrates how to design and implement enabling activities under the guidance of these three criteria and evaluates the actual effectiveness of the enabling implemented in the classroom.
文摘With the rapid development of maritime activities, there has been a growing demand for high data rate and ultra-reliable maritime communications. Traditionally, this is provided by maritime satellites. Besides, shore and island-based base stations (BSs) can be built to extend the coverage of terrestrial networks providing the fourth-generation (4G) or even the fifth-generation (5G) services. Unmanned aerial vehicles (UAVs)-aided and ship-borne BSs can also be exploited to serve as relaying nodes in maritime mesh/ad-hoc networks. Despite all these approaches, there are still open issues towards the establishment of an agile maritime communication network (MCN). Different from terrestrial communications for urban or suburban coverage, the MCN faces several challenges due to the complicated electromagnetic propagation environment, the limited geometrically available BS sites, and rigorous service demands from mission-critical applications. To address all these challenges, conventional communications and networking theories and methods need to be tailored for maritime application scenarios or new ones should be explored. The goal of this feature topic is to present the state-of-the-art original research, and the latest advances and innovations in key theories, technologies, and innovative applications for agile MCNs, as well as identify emerging research topics and point out the future research directions. Extended versions of papers published in conferences, symposiums, or workshop proceedings are encouraged for consideration.
文摘With the rapid development of maritime activities, there has been a growing demand for high data rate and ultra-reliable maritime communications. Traditionally,this is provided by maritime satellites. Besides, shore and island-based base stations (BSs) can be built to extend the coverage of terrestrial networks providing the fourth-generation (4G) or even the fifth-generation (5G) services.
文摘<div style="text-align:justify;"> <span style="font-family:Verdana;">Supporting higher education with modern technologies like E-Learning is very important for one country to improve quality of education, to meet student’s expectations and to continue teaching-learning and training when face to face education is impossible. However, it is in its preliminary stage in developing countries like Ethiopia. This study examined the enabling factors, difficulties and opportunities of E-Learning implementation in Assosa University (ASU), Ethiopia. Its purpose is to find the enabling factors, difficulties and opportunities of E-Learning implementation in ASU and developing prototype of E-Learning system to show its practicality and to identify approaches of students’ and lecturers towards E-Learning. The study employed questionnaires, observation and interview to gather the required information. A sample of 309 students and 64 Lecturers randomly selected from 7 colleges and two schools as well as ICT workers and other concerned bodies in the university. Also prototyping as a methodology was used to implement and test the proposed system for proof of concept. This study investigating the possibility of implementing E-Learning in ASU and important enablers, difficulties and opportunities is identified. Also the E-Learning platform of the university is developed and introduced for students and lecturers to show its practicality. Most students and lecturers showed good motivation in E-Learning implementation and they assumed that it is useful for the university. The result shows that although there are difficulties to implement E-Learning in ASU, the possibility of fully implementing E-Learning in the University is relatively high with mixed method. With this, the approaches of students and lecturers are positively viewed and the opportunities are very noticeable in the University. So, conventional higher education can practically implement E-Learning with mixed approach to use as supportive tool for educational improvements and to reduce physical presence.</span> </div>
