SINGULUS MASTERING BV于2004 年7月1 5日庆祝其的新厂房落成,Si ngulu s Technology的CE0 Roland Lacher邀请业内人士参加新工程落成的庆典活动.在该庆典活动中,来自美国的Paul West将介绍Universal Music的发展情况,Philips公司也将...SINGULUS MASTERING BV于2004 年7月1 5日庆祝其的新厂房落成,Si ngulu s Technology的CE0 Roland Lacher邀请业内人士参加新工程落成的庆典活动.在该庆典活动中,来自美国的Paul West将介绍Universal Music的发展情况,Philips公司也将演示新一代的光存储产品B l u-R a y,在庆典结束后,所有与会人员还将参观工厂的各种设施.展开更多
A Zimbabwean student devotes his heart and soul to learning one of China’s oldest plucked string instruments Michael Mubaiwa, a 24-year-old Zimbabwean student, received the grand prize in the 2021 China-Africa Video ...A Zimbabwean student devotes his heart and soul to learning one of China’s oldest plucked string instruments Michael Mubaiwa, a 24-year-old Zimbabwean student, received the grand prize in the 2021 China-Africa Video and Photo Competition last October. By displaying his amazing guqin experience, he won the hearts of both the audience and the jury.展开更多
法国远东学院的著名学者 Michela Bussotti(米盖拉)研究员和 Fran?ois Lachaud 研究员共同主编的Mastering Languages, Taming the World: The Production and Circulation of European Dictionaries and Lexicons of Asian Languages (...法国远东学院的著名学者 Michela Bussotti(米盖拉)研究员和 Fran?ois Lachaud 研究员共同主编的Mastering Languages, Taming the World: The Production and Circulation of European Dictionaries and Lexicons of Asian Languages (16th–19th Centuries)(《掌握语言 走向世界:16 —19 世纪欧洲和亚洲语言的词表和词典的生产与流通》)2023年由école fran?aise d’Extrême-Orient(法国东方外语学院)出版,全书共504页。展开更多
Ultraviolet nanoimprint lithography(UV-NIL)is a versatile and cost-effective technique for the fabrication of micro-and nanostructures by copying master patterns in a planar or a roll-to-roll process through curing of...Ultraviolet nanoimprint lithography(UV-NIL)is a versatile and cost-effective technique for the fabrication of micro-and nanostructures by copying master patterns in a planar or a roll-to-roll process through curing of a liquid UV-sensitive precursor.For applications with a high pattern complexity,new UV-NIL process chains must be specified.Master fabrication is a challenging part of the development and often cannot be accomplished using a single master fabrication technique.Therefore,an approach combining different patterning fabrication techniques is developed here for polymer masters using laser direct writing and photolithography.The polymer masters produced in this way are molded into inverse silicone stamps that are used for roll-to-roll replication into an acrylate formulation.To fit the required roller size for large-area UV-NIL,several submasters with micrometer-sized dot and line gratings and prism arrays,which have been patterned by these different techniques,are assembled to final size of ~200×600 mm^(2) with an absolute precision of better than 50μm.The size of the submasters allows the use of standard laboratory equipment for patterning and direct writing,thus enabling the fabrication of micro-and even nanostructures when electron-beam writing is utilized.In this way,the effort,time,and costs for the fabrication of masters for UV-NIL processes are reduced,enabling further development for particular structures and applications.Using this approach,patterns fabricated with different laboratory tools are finally replicated by UV-NIL in an acrylate formulation,demonstrating the high quality of the whole process chain.展开更多
Ethical approval is the first essential step for medical master’s students to officially initiate research.This article discusses the ethical issues encountered in various types of research projects conducted by prof...Ethical approval is the first essential step for medical master’s students to officially initiate research.This article discusses the ethical issues encountered in various types of research projects conducted by professional master’s students,the preparation of ethical application materials,conflicts between the timing of ethical applications and the clinical training rotation schedules,and the continuity of ethical applications among students within the same cohort and across different cohorts.展开更多
Objective:To assess the teaching efficacy of clinical instructors for MNS postgraduates,this study aims to gather insights into clinical educators’perceptions concerning MNS postgraduate training and identify key com...Objective:To assess the teaching efficacy of clinical instructors for MNS postgraduates,this study aims to gather insights into clinical educators’perceptions concerning MNS postgraduate training and identify key competencies required for effective teaching.Methods:This study utilized a cross-sectional design.An online questionnaire survey was distributed among clinical faculty members engaged in the education of MNS postgraduates.The survey addressed 4 areas:general teaching conditions,perceptions regarding training for MNS postgraduates,core competencies expected from clinical teachers,and implementation strategies for delivering clinical instruction tailored to these graduates.Results:A total of 143 clinical teachers supervising MNS postgraduates completed the questionnaire.Of these respondents,101(70.62%)held a bachelor’s degree while 42(29.37%)possessed a master’s degree.Although these clinicians demonstrated certain core competencies,they exhibited lower proficiency in understanding trends related to scientific advancements and current research priorities along with limited research capabilities 4.00(3.00,4.00).Notably,>95.8%of teachers recognized differences between the 2 categories of postgraduate students;only 4.2%were completely unaware of such distinctions.There was no statistically significant relationship between the demographic data of clinical educators and their core competencies(P>0.05).Conclusions:This study revealed no significant correlation between the general characteristics of clinical teachers and the core competencies of MNS postgraduates.Additionally,we identified a lack of effective communication and collaboration between MNS postgraduate supervisors and clinical educators.The findings from this research offer valuable insights for further investigation into the factors that influence the core competencies of clinical teachers,as well as strategies to enhance the clinical teaching standards for MNS postgraduates.展开更多
This year marks the 10th anniversary of the adoption of the African Union(AU)Agenda 2063,Africa’s blueprint and master plan for transforming the continent into a global powerhouse of the future.The adoption of the am...This year marks the 10th anniversary of the adoption of the African Union(AU)Agenda 2063,Africa’s blueprint and master plan for transforming the continent into a global powerhouse of the future.The adoption of the ambitious blueprint is a key event that will steer pan-African development onto the right path,and put renewed focus on the pan-African vision of building an integrated,prosperous and peaceful Africa within a 50-year period from 2013 to 2063.展开更多
Near-eutectic Al-Si alloys are widely used in automotive manufacturing due to their superior wear resistance and high temperature performance.Because of high Si content,the grain refinement of near-eutectic Al-Si allo...Near-eutectic Al-Si alloys are widely used in automotive manufacturing due to their superior wear resistance and high temperature performance.Because of high Si content,the grain refinement of near-eutectic Al-Si alloy has been a problem for many years.In this study,the effect of deep cryogenic treatment(DCT)on the microstructure and mechanical properties of Al-12Si-4Cu-2Ni-Mg alloy with addition of Al-Ti-C-B master alloy was fully investigated.Results show that the average grain size of the alloy is greatly reduced from 0.92 mm to 0.50 mm,and the eutectic Si and Al7Cu4Ni precipitates are spheroidized and refined in Al-12Si-4Cu-2Ni-Mg after DCT for 24 h and aging treatment.Thereby these changes of microstructures result in a significant increment of about 22.5%in elongation and a slight enhancement of about 6.8%in tensile strength.Moreover,the refinement of microstructure also significantly improves the fatigue life of the alloy.展开更多
Master robots are integral components of teleoperated robot-assisted minimally invasive surgery systems.Among them,parallel mechanism-based 6-degree-of-freedom master robots are distinguished by low inertia and high-f...Master robots are integral components of teleoperated robot-assisted minimally invasive surgery systems.Among them,parallel mechanism-based 6-degree-of-freedom master robots are distinguished by low inertia and high-force feedback.However,complex kinematics and singularities are the main barriers limiting its usage.This study converts the Hexa-type 6-RUS mechanism into a master robot to construct master-slave teleoperation system.The clinical background is briefly introduced and a representative surgical robot is employed to analyze the master-slave mapping relationship.The inverse/forward kinematics,the Jacobian matrix,and the translation and orientation workspace are derived as the bases of master robot’s application.The architecture parameters are optimized by the global transmission index to achieve better motion/force transmissibility.Based on the optimal result,the prototype and the master-slave control loop are constructed.Finally,the corresponding master-slave teleoperation experiment and model experiment demonstrate that the proposed master robot satisfies the basic need for medical application.展开更多
Alberto Pacheco,PhD Dr.Alberto Pacheco has been the Director of the Andrology Laboratory and Sperm Bank at IVI Madrid,IVI Valladolid and IVI Salamanca(Spain)since 2001.He holds a PhD in Biological Sciences since 1997 ...Alberto Pacheco,PhD Dr.Alberto Pacheco has been the Director of the Andrology Laboratory and Sperm Bank at IVI Madrid,IVI Valladolid and IVI Salamanca(Spain)since 2001.He holds a PhD in Biological Sciences since 1997 from the Complutense University of Madrid in Spain,and he also has a Master in Reproductive Medicine since 2005.展开更多
文摘SINGULUS MASTERING BV于2004 年7月1 5日庆祝其的新厂房落成,Si ngulu s Technology的CE0 Roland Lacher邀请业内人士参加新工程落成的庆典活动.在该庆典活动中,来自美国的Paul West将介绍Universal Music的发展情况,Philips公司也将演示新一代的光存储产品B l u-R a y,在庆典结束后,所有与会人员还将参观工厂的各种设施.
文摘A Zimbabwean student devotes his heart and soul to learning one of China’s oldest plucked string instruments Michael Mubaiwa, a 24-year-old Zimbabwean student, received the grand prize in the 2021 China-Africa Video and Photo Competition last October. By displaying his amazing guqin experience, he won the hearts of both the audience and the jury.
文摘法国远东学院的著名学者 Michela Bussotti(米盖拉)研究员和 Fran?ois Lachaud 研究员共同主编的Mastering Languages, Taming the World: The Production and Circulation of European Dictionaries and Lexicons of Asian Languages (16th–19th Centuries)(《掌握语言 走向世界:16 —19 世纪欧洲和亚洲语言的词表和词典的生产与流通》)2023年由école fran?aise d’Extrême-Orient(法国东方外语学院)出版,全书共504页。
文摘Ultraviolet nanoimprint lithography(UV-NIL)is a versatile and cost-effective technique for the fabrication of micro-and nanostructures by copying master patterns in a planar or a roll-to-roll process through curing of a liquid UV-sensitive precursor.For applications with a high pattern complexity,new UV-NIL process chains must be specified.Master fabrication is a challenging part of the development and often cannot be accomplished using a single master fabrication technique.Therefore,an approach combining different patterning fabrication techniques is developed here for polymer masters using laser direct writing and photolithography.The polymer masters produced in this way are molded into inverse silicone stamps that are used for roll-to-roll replication into an acrylate formulation.To fit the required roller size for large-area UV-NIL,several submasters with micrometer-sized dot and line gratings and prism arrays,which have been patterned by these different techniques,are assembled to final size of ~200×600 mm^(2) with an absolute precision of better than 50μm.The size of the submasters allows the use of standard laboratory equipment for patterning and direct writing,thus enabling the fabrication of micro-and even nanostructures when electron-beam writing is utilized.In this way,the effort,time,and costs for the fabrication of masters for UV-NIL processes are reduced,enabling further development for particular structures and applications.Using this approach,patterns fabricated with different laboratory tools are finally replicated by UV-NIL in an acrylate formulation,demonstrating the high quality of the whole process chain.
文摘Ethical approval is the first essential step for medical master’s students to officially initiate research.This article discusses the ethical issues encountered in various types of research projects conducted by professional master’s students,the preparation of ethical application materials,conflicts between the timing of ethical applications and the clinical training rotation schedules,and the continuity of ethical applications among students within the same cohort and across different cohorts.
基金supported by the Medical Education Research Initiative of Henan Province,grant funded by the Henan Provincial Health Commission(No.Wjlx2022186).
文摘Objective:To assess the teaching efficacy of clinical instructors for MNS postgraduates,this study aims to gather insights into clinical educators’perceptions concerning MNS postgraduate training and identify key competencies required for effective teaching.Methods:This study utilized a cross-sectional design.An online questionnaire survey was distributed among clinical faculty members engaged in the education of MNS postgraduates.The survey addressed 4 areas:general teaching conditions,perceptions regarding training for MNS postgraduates,core competencies expected from clinical teachers,and implementation strategies for delivering clinical instruction tailored to these graduates.Results:A total of 143 clinical teachers supervising MNS postgraduates completed the questionnaire.Of these respondents,101(70.62%)held a bachelor’s degree while 42(29.37%)possessed a master’s degree.Although these clinicians demonstrated certain core competencies,they exhibited lower proficiency in understanding trends related to scientific advancements and current research priorities along with limited research capabilities 4.00(3.00,4.00).Notably,>95.8%of teachers recognized differences between the 2 categories of postgraduate students;only 4.2%were completely unaware of such distinctions.There was no statistically significant relationship between the demographic data of clinical educators and their core competencies(P>0.05).Conclusions:This study revealed no significant correlation between the general characteristics of clinical teachers and the core competencies of MNS postgraduates.Additionally,we identified a lack of effective communication and collaboration between MNS postgraduate supervisors and clinical educators.The findings from this research offer valuable insights for further investigation into the factors that influence the core competencies of clinical teachers,as well as strategies to enhance the clinical teaching standards for MNS postgraduates.
文摘This year marks the 10th anniversary of the adoption of the African Union(AU)Agenda 2063,Africa’s blueprint and master plan for transforming the continent into a global powerhouse of the future.The adoption of the ambitious blueprint is a key event that will steer pan-African development onto the right path,and put renewed focus on the pan-African vision of building an integrated,prosperous and peaceful Africa within a 50-year period from 2013 to 2063.
基金financially supported by Shandong Province Aluminum Manufacturing and Application Innovation and Entrepreneurship Community projectShandong Province key Research and Development Plan(2021ZLGX01,2021SFGC1001,2023CXPT024)Shandong Province Youth Taishan project。
文摘Near-eutectic Al-Si alloys are widely used in automotive manufacturing due to their superior wear resistance and high temperature performance.Because of high Si content,the grain refinement of near-eutectic Al-Si alloy has been a problem for many years.In this study,the effect of deep cryogenic treatment(DCT)on the microstructure and mechanical properties of Al-12Si-4Cu-2Ni-Mg alloy with addition of Al-Ti-C-B master alloy was fully investigated.Results show that the average grain size of the alloy is greatly reduced from 0.92 mm to 0.50 mm,and the eutectic Si and Al7Cu4Ni precipitates are spheroidized and refined in Al-12Si-4Cu-2Ni-Mg after DCT for 24 h and aging treatment.Thereby these changes of microstructures result in a significant increment of about 22.5%in elongation and a slight enhancement of about 6.8%in tensile strength.Moreover,the refinement of microstructure also significantly improves the fatigue life of the alloy.
基金the National Natural Science Foundation of China(No.62211540723)the Interdisciplinary Program of Shanghai Jiao Tong University(Nos.YG2023ZD05 and YG2023ZD14)+1 种基金the Quanzhou High-Level Talent Innovation and Entrepreneurship Project(No.2021C003R)the Research Project of Institute of Medical Robotics of Shanghai Jiao Tong University。
文摘Master robots are integral components of teleoperated robot-assisted minimally invasive surgery systems.Among them,parallel mechanism-based 6-degree-of-freedom master robots are distinguished by low inertia and high-force feedback.However,complex kinematics and singularities are the main barriers limiting its usage.This study converts the Hexa-type 6-RUS mechanism into a master robot to construct master-slave teleoperation system.The clinical background is briefly introduced and a representative surgical robot is employed to analyze the master-slave mapping relationship.The inverse/forward kinematics,the Jacobian matrix,and the translation and orientation workspace are derived as the bases of master robot’s application.The architecture parameters are optimized by the global transmission index to achieve better motion/force transmissibility.Based on the optimal result,the prototype and the master-slave control loop are constructed.Finally,the corresponding master-slave teleoperation experiment and model experiment demonstrate that the proposed master robot satisfies the basic need for medical application.
文摘Alberto Pacheco,PhD Dr.Alberto Pacheco has been the Director of the Andrology Laboratory and Sperm Bank at IVI Madrid,IVI Valladolid and IVI Salamanca(Spain)since 2001.He holds a PhD in Biological Sciences since 1997 from the Complutense University of Madrid in Spain,and he also has a Master in Reproductive Medicine since 2005.
