Dépouillements

Reversing the trend of engineering enrollment declines with innovative outreach, recruiting, and retention programs / Chad E. Davis in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 157 - 163 Titre : Reversing the trend of engineering enrollment declines with innovative outreach, recruiting, and retention programs Type de document : texte imprimé Auteurs : Chad E. Davis, Auteur ; Yeary, M.B., Auteur ; James J. Sluss, Auteur Année de publication : 2013 Article en page(s) : pp. 157 - 163 Note générale : Education Langues : Anglais (eng) Mots-clés : Electrical  and  computer  engineering  (ECE)  Engineering  Enrollment  Outreach  Recruiting  Retention Résumé : This paper discusses an all-encompassing approach to increase the number of students in engineering through innovative outreach, recruiting, and retention programs. Prior to adopting these programs, the School of Electrical and Computer Engineering (ECE) at the University of Oklahoma (OU), Norman, experienced a reduction in engineering enrollment similar to the trend that has occurred across the U.S. over the last few years. As a result, the school investigated the key factors that influence selection of engineering as a career path and initiated a corrective program to reverse this trend. The program involves focusing on the present through retention, on the immediate future through recruiting, and on the distant future through outreach. The focus of all of these programs is to mobilize the OU-ECE faculty and student body to present advanced engineering technologies, innovative demonstrations, and hands-on activities at a level that the individual student can understand and appreciate. Student surveys and interviews are used to assess the program qualitatively, and OU-ECE enrollment numbers are used as a quantitative assessment. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5872032&sortType%3Das [...] [article] Reversing the trend of engineering enrollment declines with innovative outreach, recruiting, and retention programs [texte imprimé] / Chad E. Davis, Auteur ; Yeary, M.B., Auteur ; James J. Sluss, Auteur . - 2013 . - pp. 157 - 163. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 157 - 163 Mots-clés : Electrical  and  computer  engineering  (ECE)  Engineering  Enrollment  Outreach  Recruiting  Retention Résumé : This paper discusses an all-encompassing approach to increase the number of students in engineering through innovative outreach, recruiting, and retention programs. Prior to adopting these programs, the School of Electrical and Computer Engineering (ECE) at the University of Oklahoma (OU), Norman, experienced a reduction in engineering enrollment similar to the trend that has occurred across the U.S. over the last few years. As a result, the school investigated the key factors that influence selection of engineering as a career path and initiated a corrective program to reverse this trend. The program involves focusing on the present through retention, on the immediate future through recruiting, and on the distant future through outreach. The focus of all of these programs is to mobilize the OU-ECE faculty and student body to present advanced engineering technologies, innovative demonstrations, and hands-on activities at a level that the individual student can understand and appreciate. Student surveys and interviews are used to assess the program qualitatively, and OU-ECE enrollment numbers are used as a quantitative assessment. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5872032&sortType%3Das [...]

Learning intelligent genetic algorithms using japanese nonograms / Tsai, Jinn-Tsong in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 164 - 168 Titre : Learning intelligent genetic algorithms using japanese nonograms Type de document : texte imprimé Auteurs : Tsai, Jinn-Tsong, Auteur ; Ping-Yi Chou, Auteur ; Jia-Cen Fang, Auteur Année de publication : 2013 Article en page(s) : pp. 164 - 168 Note générale : Education Langues : Anglais (eng) Mots-clés : Condensed  encoding  Japanese  nonograms  Genetic  algorithms  (GAs)  Pedagogical  issues  Teaching  sequence Résumé : An intelligent genetic algorithm (IGA) is proposed to solve Japanese nonograms and is used as a method in a university course to learn evolutionary algorithms. The IGA combines the global exploration capabilities of a canonical genetic algorithm (CGA) with effective condensed encoding, improved fitness function, and modified crossover and mutation. In this paper, the condensed encoding ensures that the chromosome is a feasible solution in all rows for Japanese nonograms. In the reconstruction process of a Japanese nonogram, the numbers in the left column are used as encoding conditions, and the numbers in the top row with the improved fitness function are employed to evaluate the reconstruction result. From the computational experiments, the proposed IGA approach is applied to solve Japanese nonograms effectively, with better results than using a CGA. The students of the Department of Computer Science, National Pingtung University of Education, Taiwan, have gained practical experience of applying evolutionary algorithms to solve Japanese nonograms using both the proposed IGA and a CGA. The students learn that the IGA can find the right solution of the puzzle effectively, but the CGA cannot. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5875911&sortType%3Das [...] [article] Learning intelligent genetic algorithms using japanese nonograms [texte imprimé] / Tsai, Jinn-Tsong, Auteur ; Ping-Yi Chou, Auteur ; Jia-Cen Fang, Auteur . - 2013 . - pp. 164 - 168. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 164 - 168 Mots-clés : Condensed  encoding  Japanese  nonograms  Genetic  algorithms  (GAs)  Pedagogical  issues  Teaching  sequence Résumé : An intelligent genetic algorithm (IGA) is proposed to solve Japanese nonograms and is used as a method in a university course to learn evolutionary algorithms. The IGA combines the global exploration capabilities of a canonical genetic algorithm (CGA) with effective condensed encoding, improved fitness function, and modified crossover and mutation. In this paper, the condensed encoding ensures that the chromosome is a feasible solution in all rows for Japanese nonograms. In the reconstruction process of a Japanese nonogram, the numbers in the left column are used as encoding conditions, and the numbers in the top row with the improved fitness function are employed to evaluate the reconstruction result. From the computational experiments, the proposed IGA approach is applied to solve Japanese nonograms effectively, with better results than using a CGA. The students of the Department of Computer Science, National Pingtung University of Education, Taiwan, have gained practical experience of applying evolutionary algorithms to solve Japanese nonograms using both the proposed IGA and a CGA. The students learn that the IGA can find the right solution of the puzzle effectively, but the CGA cannot. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5875911&sortType%3Das [...]

An ultra low cost wireless communications laboratory for education and research / Yair Linn in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 169 - 179 Titre : An ultra low cost wireless communications laboratory for education and research Type de document : texte imprimé Auteurs : Yair Linn, Auteur Année de publication : 2013 Article en page(s) : pp. 169 - 179 Note générale : Education Langues : Anglais (eng) Mots-clés : AGC  BPSK  QAM  QPSK  Demodulation  Digital  communications  Education  Field  programmable  gate  array  (FPGA)  Hardware  Laboratory  Modulation  Phase  locked  loop  (PLL)  Phase  shift  keying  (PSK)  Receivers  Transmitters  Wireless  communications Résumé : This paper presents an ultra-low-cost wireless communications laboratory that is based on a commercial off-the-shelf field programmable gate array (FPGA) development board that is both inexpensive and available worldwide. The total cost of the laboratory is under USD $200, but it includes complete transmission, channel emulation, reception (coherent and noncoherent), and probing capabilities. Over 15 different modulation types are currently supported. The laboratory, aimed primarily to serve as a teaching aid for a professor teaching senior undergraduate courses and projects, allows students to have visual real-time demonstrations in wireless communications systems. The laboratory is also powerful enough to allow experienced researchers to carry out wireless communications research projects. In this context, the laboratory is particularly useful for universities in developing countries, where budgets are extremely limited. Numerical and written survey results are presented that were collected from two classes of students taught by the author in a university in Colombia, South America, and which show the effectiveness of the laboratory in teaching wireless communications. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5937028&sortType%3Das [...] [article] An ultra low cost wireless communications laboratory for education and research [texte imprimé] / Yair Linn, Auteur . - 2013 . - pp. 169 - 179. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 169 - 179 Mots-clés : AGC  BPSK  QAM  QPSK  Demodulation  Digital  communications  Education  Field  programmable  gate  array  (FPGA)  Hardware  Laboratory  Modulation  Phase  locked  loop  (PLL)  Phase  shift  keying  (PSK)  Receivers  Transmitters  Wireless  communications Résumé : This paper presents an ultra-low-cost wireless communications laboratory that is based on a commercial off-the-shelf field programmable gate array (FPGA) development board that is both inexpensive and available worldwide. The total cost of the laboratory is under USD $200, but it includes complete transmission, channel emulation, reception (coherent and noncoherent), and probing capabilities. Over 15 different modulation types are currently supported. The laboratory, aimed primarily to serve as a teaching aid for a professor teaching senior undergraduate courses and projects, allows students to have visual real-time demonstrations in wireless communications systems. The laboratory is also powerful enough to allow experienced researchers to carry out wireless communications research projects. In this context, the laboratory is particularly useful for universities in developing countries, where budgets are extremely limited. Numerical and written survey results are presented that were collected from two classes of students taught by the author in a university in Colombia, South America, and which show the effectiveness of the laboratory in teaching wireless communications. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5937028&sortType%3Das [...]

FPGA-based laboratory assignments for NoC-based manycore systems / Christos Ttofis in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 180 - 189 Titre : FPGA-based laboratory assignments for NoC-based manycore systems Type de document : texte imprimé Auteurs : Christos Ttofis, Auteur ; Theocharis Theocharides, Auteur ; Maria K. Michael, Auteur Année de publication : 2013 Article en page(s) : pp. 180 - 189 Note générale : Education Langues : Anglais (eng) Mots-clés : Computer  architecture  Embedded  systems  design  Field  programmable  gate  arrays  (FPGAs)  Manycore  systems  Networks-on-chip  (NoC) Résumé : Manycore systems have emerged as being one of the dominant architectural trends in next-generation computer systems. These highly parallel systems are expected to be interconnected via packet-based networks-on-chip (NoC). The complexity of such systems poses novel and exciting challenges in academia, as teaching their design requires the students to understand a large number of NoC-based design-space parameters. Moreover, the industry has only recently attempted to design large-scale NoC-based manycore prototypes; the use of NoCs, therefore, has not yet reached a mature stage. Consequently, academia still lacks standardized tools and methodologies to teach NoC-based manycore systems, which, in turn, demand a solid educational background in a wide variety of areas, thus raising several teaching challenges. This paper presents an FPGA-based teaching framework composed of a sequence of laboratory assignments. The framework provides instructors with a practical teaching approach and helps them teach students how to emulate NoC-based manycore systems and how to evaluate and explore their design parameters. The proposed framework can be integrated into existing senior undergraduate courses or can be taught as an independent course. The course has been taught three times at the University of Cyprus, and initial course evaluation results, instructor observations, and suggested grading policies are also provided. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5951809&sortType%3Das [...] [article] FPGA-based laboratory assignments for NoC-based manycore systems [texte imprimé] / Christos Ttofis, Auteur ; Theocharis Theocharides, Auteur ; Maria K. Michael, Auteur . - 2013 . - pp. 180 - 189. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 180 - 189 Mots-clés : Computer  architecture  Embedded  systems  design  Field  programmable  gate  arrays  (FPGAs)  Manycore  systems  Networks-on-chip  (NoC) Résumé : Manycore systems have emerged as being one of the dominant architectural trends in next-generation computer systems. These highly parallel systems are expected to be interconnected via packet-based networks-on-chip (NoC). The complexity of such systems poses novel and exciting challenges in academia, as teaching their design requires the students to understand a large number of NoC-based design-space parameters. Moreover, the industry has only recently attempted to design large-scale NoC-based manycore prototypes; the use of NoCs, therefore, has not yet reached a mature stage. Consequently, academia still lacks standardized tools and methodologies to teach NoC-based manycore systems, which, in turn, demand a solid educational background in a wide variety of areas, thus raising several teaching challenges. This paper presents an FPGA-based teaching framework composed of a sequence of laboratory assignments. The framework provides instructors with a practical teaching approach and helps them teach students how to emulate NoC-based manycore systems and how to evaluate and explore their design parameters. The proposed framework can be integrated into existing senior undergraduate courses or can be taught as an independent course. The course has been taught three times at the University of Cyprus, and initial course evaluation results, instructor observations, and suggested grading policies are also provided. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5951809&sortType%3Das [...]

Methodology of change assimilation in technology education / Nissim Sabag in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 190 - 195 Titre : Methodology of change assimilation in technology education : a case study Type de document : texte imprimé Auteurs : Nissim Sabag, Auteur ; Yaron Doppelt, Auteur Année de publication : 2013 Article en page(s) : pp. 190 - 195 Note générale : Education Langues : Anglais (eng) Mots-clés : Change  assimilation  Design-based  learning  Intervention  program  Project-based  learning  (PBL)  Teacher  training Résumé : This paper describes a four-year program to advance electrical and electronics studies and their implementation in eight northern Israeli high schools. The program was begun with four schools participating, increasing to eight schools toward the end. This paper presents the teaching and learning processes of teachers and students during the program. Within the program's framework, learning materials and teaching guides were written, teachers were given in-school training and guidance, and meetings were held with teachers and headmasters so as to promote and track performance in the field. At the end of the program, more than 200 12th-grade students from eight high schools successfully passed their matriculation exam on large-scale projects. About 150 of these students had studied electronics, and the other 50 studied electricity. Prior to this program, only about 40 final projects in these fields had been undertaken in the State of Israel. Today, 10 years after the program, some 2000 final projects are submitted each year to matriculation exams. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5937029&sortType%3Das [...] [article] Methodology of change assimilation in technology education : a case study [texte imprimé] / Nissim Sabag, Auteur ; Yaron Doppelt, Auteur . - 2013 . - pp. 190 - 195. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 190 - 195 Mots-clés : Change  assimilation  Design-based  learning  Intervention  program  Project-based  learning  (PBL)  Teacher  training Résumé : This paper describes a four-year program to advance electrical and electronics studies and their implementation in eight northern Israeli high schools. The program was begun with four schools participating, increasing to eight schools toward the end. This paper presents the teaching and learning processes of teachers and students during the program. Within the program's framework, learning materials and teaching guides were written, teachers were given in-school training and guidance, and meetings were held with teachers and headmasters so as to promote and track performance in the field. At the end of the program, more than 200 12th-grade students from eight high schools successfully passed their matriculation exam on large-scale projects. About 150 of these students had studied electronics, and the other 50 studied electricity. Prior to this program, only about 40 final projects in these fields had been undertaken in the State of Israel. Today, 10 years after the program, some 2000 final projects are submitted each year to matriculation exams. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5937029&sortType%3Das [...]

Using virtualization and automatic evaluation / Salvador Ros in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 196 - 202 Titre : Using virtualization and automatic evaluation : adapting network services management courses to the EHEA Type de document : texte imprimé Auteurs : Salvador Ros, Auteur ; Antonio Robles-Gomez, Auteur ; Roberto Hernandez, Auteur Année de publication : 2013 Article en page(s) : pp. 196 - 202 Note générale : Education Langues : Anglais (eng) Mots-clés : Automatic  learning  systems  European  higher  education  area  (EHEA)  Distance  education  Information  technology  Virtual  learning  environments  (VLEs) Résumé : This paper outlines the adaptation of a course on the management of network services in operating systems, called NetServicesOS, to the context of the new European Higher Education Area (EHEA). NetServicesOS is a mandatory course in one of the official graduate programs in the Faculty of Computer Science at the Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain, the Spanish University for Distance Education. Since UNED is a distance university, this course is taught entirely online. The adaptation process includes the implementation of continuous assessment, a key feature in EHEA's methodology. This learning-teaching methodology is driven by a set of student activities that implement the continuous assessment. For this, a virtual machine-based framework was defined, and an automatic evaluation system implemented. The evaluation system can handle the large student numbers characteristic of distance learning. If the set of proposed activities had to be performed in person on site, significant resources would have been necessary since many computer laboratories would have been required to accommodate all the students. Furthermore, the proposed framework ensures that students can perform the practical work simply and flexibly, without the need for large computing platforms. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5944997&sortType%3Das [...] [article] Using virtualization and automatic evaluation : adapting network services management courses to the EHEA [texte imprimé] / Salvador Ros, Auteur ; Antonio Robles-Gomez, Auteur ; Roberto Hernandez, Auteur . - 2013 . - pp. 196 - 202. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 196 - 202 Mots-clés : Automatic  learning  systems  European  higher  education  area  (EHEA)  Distance  education  Information  technology  Virtual  learning  environments  (VLEs) Résumé : This paper outlines the adaptation of a course on the management of network services in operating systems, called NetServicesOS, to the context of the new European Higher Education Area (EHEA). NetServicesOS is a mandatory course in one of the official graduate programs in the Faculty of Computer Science at the Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain, the Spanish University for Distance Education. Since UNED is a distance university, this course is taught entirely online. The adaptation process includes the implementation of continuous assessment, a key feature in EHEA's methodology. This learning-teaching methodology is driven by a set of student activities that implement the continuous assessment. For this, a virtual machine-based framework was defined, and an automatic evaluation system implemented. The evaluation system can handle the large student numbers characteristic of distance learning. If the set of proposed activities had to be performed in person on site, significant resources would have been necessary since many computer laboratories would have been required to accommodate all the students. Furthermore, the proposed framework ensures that students can perform the practical work simply and flexibly, without the need for large computing platforms. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5944997&sortType%3Das [...]

A control systems concept inventory test design and assessment / Michele Bristow in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 203 - 212 Titre : A control systems concept inventory test design and assessment Type de document : texte imprimé Auteurs : Michele Bristow, Auteur ; Kaan Erkorkmaz, Auteur ; Huissoon, Jan Paul, Auteur Année de publication : 2013 Article en page(s) : pp. 203 - 212 Note générale : Education Langues : Anglais (eng) Mots-clés : Assessment  Item  response  theory  (IRT)  Concept  inventory  Control  systems  Diagnostic  test Résumé : Any meaningful initiative to improve the teaching and learning in introductory control systems courses needs a clear test of student conceptual understanding to determine the effectiveness of proposed methods and activities. The authors propose a control systems concept inventory. Development of the inventory was collaborative and iterative. The diagnostic test was administered to students before (pre) and after (post) student learning activities. Test responses were analyzed to provide instructors with feedback on their teaching. Using classical test theory and item response theory, aggregated results were analyzed to assess internal consistency and measurement error, respectively. Students demonstrated an improvement from pre- to post-test scores, showing gains of 23%-34% in understanding of new concepts learned. The internal consistency of the test has ranged from 0.61 to 0.68. It can be shown that the precision of the test is highest in the score range of 33%-66%, which is where most post-test scores occurred. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5953536&sortType%3Das [...] [article] A control systems concept inventory test design and assessment [texte imprimé] / Michele Bristow, Auteur ; Kaan Erkorkmaz, Auteur ; Huissoon, Jan Paul, Auteur . - 2013 . - pp. 203 - 212. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 203 - 212 Mots-clés : Assessment  Item  response  theory  (IRT)  Concept  inventory  Control  systems  Diagnostic  test Résumé : Any meaningful initiative to improve the teaching and learning in introductory control systems courses needs a clear test of student conceptual understanding to determine the effectiveness of proposed methods and activities. The authors propose a control systems concept inventory. Development of the inventory was collaborative and iterative. The diagnostic test was administered to students before (pre) and after (post) student learning activities. Test responses were analyzed to provide instructors with feedback on their teaching. Using classical test theory and item response theory, aggregated results were analyzed to assess internal consistency and measurement error, respectively. Students demonstrated an improvement from pre- to post-test scores, showing gains of 23%-34% in understanding of new concepts learned. The internal consistency of the test has ranged from 0.61 to 0.68. It can be shown that the precision of the test is highest in the score range of 33%-66%, which is where most post-test scores occurred. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5953536&sortType%3Das [...]

Student usage patterns and perceptions for differentiated lab exercises in an undergraduate programming course / Heng Ngee Mok in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 213 - 217 Titre : Student usage patterns and perceptions for differentiated lab exercises in an undergraduate programming course Type de document : texte imprimé Auteurs : Heng Ngee Mok, Auteur Année de publication : 2013 Article en page(s) : pp. 213 - 217 Note générale : Education Langues : Anglais (eng) Mots-clés : Computer  science  education  Differentiated  instruction  (DI)  Differentiated  learning  Educational  activities  Higher  education  Student  engagement  and  satisfaction  Teaching/learning  strategies Résumé : Differentiated instruction in the form of tiered take-home lab exercises was implemented for students of an undergraduate-level programming course. This paper attempts to uncover the perceptions and usage patterns of students toward these new lab exercises using a comprehensive survey. Findings reveal that these tiered exercises are generally very well received and preferred over their traditional “one size fits all” counterparts. Although the study does not show that tiered exercises have improved proficiency or scores, it does seem to indicate higher student engagement and motivation levels. Based on the survey results, a list of recommendations is put forth for the structure and format of tiered exercises that can be applied to future offerings of this programming course as well as to other similar courses. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5993470&sortType%3Das [...] [article] Student usage patterns and perceptions for differentiated lab exercises in an undergraduate programming course [texte imprimé] / Heng Ngee Mok, Auteur . - 2013 . - pp. 213 - 217. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 213 - 217 Mots-clés : Computer  science  education  Differentiated  instruction  (DI)  Differentiated  learning  Educational  activities  Higher  education  Student  engagement  and  satisfaction  Teaching/learning  strategies Résumé : Differentiated instruction in the form of tiered take-home lab exercises was implemented for students of an undergraduate-level programming course. This paper attempts to uncover the perceptions and usage patterns of students toward these new lab exercises using a comprehensive survey. Findings reveal that these tiered exercises are generally very well received and preferred over their traditional “one size fits all” counterparts. Although the study does not show that tiered exercises have improved proficiency or scores, it does seem to indicate higher student engagement and motivation levels. Based on the survey results, a list of recommendations is put forth for the structure and format of tiered exercises that can be applied to future offerings of this programming course as well as to other similar courses. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5993470&sortType%3Das [...]

An open-access educational tool for teaching motion dynamics in multi-axis servomotor control / Jesus Rooney Rivera-Guillen in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 218 - 225 Titre : An open-access educational tool for teaching motion dynamics in multi-axis servomotor control Type de document : texte imprimé Auteurs : Jesus Rooney Rivera-Guillen, Auteur ; Jose de Jesus Rangel-Magdaleno, Auteur ; Rene de Jesus Romero-Troncoso, Auteur Année de publication : 2013 Article en page(s) : pp. 218 - 225 Note générale : Education Langues : Anglais (eng) Mots-clés : Dynamics  Motion  control  Numerical  control  Servomotors  Spline  functions Résumé : Servomotors are widely used in computerized numerically controlled (CNC) machines, hence motion control is a major topic covered in undergraduate/graduate engineering courses. Despite the fact that several syllabi include the motion dynamics topic in their courses, there are neither suitable tools available for designing and simulating multi-axis motion control nor an efficient link between theory and practice. This paper proposes an educational, open-source tool for teaching motion dynamics in multi-axis servomotor control. The tool allows students to generate multi-axis motion and export these movements for their application to a CNC machine. A simulation module is embedded for evaluating the controller performance. The proposed educational tool allows the use of the inductive pedagogic method to support student learning. Eleven lab practicals are described to show how the proposed tool can be utilized for the systematic teaching of motion dynamics. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5961660&sortType%3Das [...] [article] An open-access educational tool for teaching motion dynamics in multi-axis servomotor control [texte imprimé] / Jesus Rooney Rivera-Guillen, Auteur ; Jose de Jesus Rangel-Magdaleno, Auteur ; Rene de Jesus Romero-Troncoso, Auteur . - 2013 . - pp. 218 - 225. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 218 - 225 Mots-clés : Dynamics  Motion  control  Numerical  control  Servomotors  Spline  functions Résumé : Servomotors are widely used in computerized numerically controlled (CNC) machines, hence motion control is a major topic covered in undergraduate/graduate engineering courses. Despite the fact that several syllabi include the motion dynamics topic in their courses, there are neither suitable tools available for designing and simulating multi-axis motion control nor an efficient link between theory and practice. This paper proposes an educational, open-source tool for teaching motion dynamics in multi-axis servomotor control. The tool allows students to generate multi-axis motion and export these movements for their application to a CNC machine. A simulation module is embedded for evaluating the controller performance. The proposed educational tool allows the use of the inductive pedagogic method to support student learning. Eleven lab practicals are described to show how the proposed tool can be utilized for the systematic teaching of motion dynamics. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5961660&sortType%3Das [...]

Learning switching control / Manuel Pasamontes in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 226 - 232 Titre : Learning switching control : A tank level-control exercise Type de document : texte imprimé Auteurs : Manuel Pasamontes, Auteur ; José Domingo Alvarez, Auteur ; José Luis Guzman, Auteur Année de publication : 2013 Article en page(s) : pp. 226 - 232 Note générale : Education Langues : Anglais (eng) Mots-clés : Control  engineering  education  PID  control  Level  control  Nonlinear  systems  Switching  systems Résumé : A key topic in multicontroller strategies is the mechanism for switching between controllers, depending on the current operating point. The objective of the switching mechanism is to keep the control action coherent. To help students understand the switching strategy involved in multicontroller schema and the relationship between the system dynamics and the switching structure, this paper proposes a student practical where basic linear control knowledge and a simple switching strategy are applied to an educational nonlinear control problem, that of controlling the level in a tank. Evaluation provided by the students is also included. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5967920&sortType%3Das [...] [article] Learning switching control : A tank level-control exercise [texte imprimé] / Manuel Pasamontes, Auteur ; José Domingo Alvarez, Auteur ; José Luis Guzman, Auteur . - 2013 . - pp. 226 - 232. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 226 - 232 Mots-clés : Control  engineering  education  PID  control  Level  control  Nonlinear  systems  Switching  systems Résumé : A key topic in multicontroller strategies is the mechanism for switching between controllers, depending on the current operating point. The objective of the switching mechanism is to keep the control action coherent. To help students understand the switching strategy involved in multicontroller schema and the relationship between the system dynamics and the switching structure, this paper proposes a student practical where basic linear control knowledge and a simple switching strategy are applied to an educational nonlinear control problem, that of controlling the level in a tank. Evaluation provided by the students is also included. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5967920&sortType%3Das [...]

Differential amplifier with current-mirror load / George F. Paulik in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 233 - 237 Titre : Differential amplifier with current-mirror load : influence of current gain, early voltage, and supply voltage on the DC output voltage Type de document : texte imprimé Auteurs : George F. Paulik, Auteur ; Raymond P. Mayer, Auteur Année de publication : 2013 Article en page(s) : pp. 233 - 237 Note générale : Education Langues : Anglais (eng) Mots-clés : Amplifier  Base  currents  Current  gain  Differential  amplifier  Emitter-coupled  differential  amplifier  Gain  Output  voltage Résumé : A differential amplifier composed of an emitter-coupled pair is useful as an example in lecture presentations and laboratory experiments in electronic circuit analysis courses. However, in an active circuit with zero input load Vid, both laboratory measurements and PSPICE and LTspice simulation results for the output voltage Vo are considerably lower than one base emitter unit VBE(on) below the supply voltage VCC, as predicted by a textbook derivation. Modification of the derivation to include the p-n-p transistor base currents and the current gain βP and the supply voltage and specifications for the four transistors provide equations that predict results for Vo that are consistent with laboratory experience and computer simulations. The output voltage is in excess of three VBE(on) units below VCC when βP is 50. At larger values for βP , Vo is increased by a factor proportional to 1/βP, reaching one VBE(on) unit below VCC as βP approaches infinity. Larger values for VCC cause an additional modest difference between VCC and Vo at low values for βP. The derived equations and LTspice values are used to develop an empirical equation that predicts output voltages for the given Early voltages. The technique is adaptable to student data evaluation assignments. The computer simulations also showed that increased supply voltage results in increased gain for a given input value for Vid, while larger values for βP result in a modest increase in gain at all values of VCC. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6003805&sortType%3Das [...] [article] Differential amplifier with current-mirror load : influence of current gain, early voltage, and supply voltage on the DC output voltage [texte imprimé] / George F. Paulik, Auteur ; Raymond P. Mayer, Auteur . - 2013 . - pp. 233 - 237. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 233 - 237 Mots-clés : Amplifier  Base  currents  Current  gain  Differential  amplifier  Emitter-coupled  differential  amplifier  Gain  Output  voltage Résumé : A differential amplifier composed of an emitter-coupled pair is useful as an example in lecture presentations and laboratory experiments in electronic circuit analysis courses. However, in an active circuit with zero input load Vid, both laboratory measurements and PSPICE and LTspice simulation results for the output voltage Vo are considerably lower than one base emitter unit VBE(on) below the supply voltage VCC, as predicted by a textbook derivation. Modification of the derivation to include the p-n-p transistor base currents and the current gain βP and the supply voltage and specifications for the four transistors provide equations that predict results for Vo that are consistent with laboratory experience and computer simulations. The output voltage is in excess of three VBE(on) units below VCC when βP is 50. At larger values for βP , Vo is increased by a factor proportional to 1/βP, reaching one VBE(on) unit below VCC as βP approaches infinity. Larger values for VCC cause an additional modest difference between VCC and Vo at low values for βP. The derived equations and LTspice values are used to develop an empirical equation that predicts output voltages for the given Early voltages. The technique is adaptable to student data evaluation assignments. The computer simulations also showed that increased supply voltage results in increased gain for a given input value for Vid, while larger values for βP result in a modest increase in gain at all values of VCC. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6003805&sortType%3Das [...]

Hands-on learning modules for interdisciplinary environments / Phillip B. Chilson in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 238 - 247 Titre : Hands-on learning modules for interdisciplinary environments : an example with a focus on weather radar applications Type de document : texte imprimé Auteurs : Phillip B. Chilson, Auteur ; Mark B. Yeary, Auteur Année de publication : 2013 Article en page(s) : pp. 238 - 247 Note générale : Education Langues : Anglais (eng) Mots-clés : Doppler  radar  Education  Electromagnetics  Meteorological  radar  Scattering  parameters Résumé : Learning modules provide an effective means of encouraging cognition and active learning. This paper discusses several such modules that have been developed within a course on weather radar applications intended for students from Electrical Engineering and Meteorology. The modules were designed both to promote interdisciplinary exchange between the students and to guide them from a theoretical to an applied understanding of weather radar and the interactions of radio waves with geophysical media. The learning modules introduce students to various means of acquiring weather radar data from real-time and archival sources and ways in which to query and visualize them. They are also tasked with analyzing data from several actual and significant meteorological events and asked to assess the strengths and limitations of current methods of retrieving rainfall rates. Data sources include both weather radars and complementary surface-based instrumentation. The modules may be used in a variety of locations and by a diversity of students. Although developed for weather radar applications, the concepts discussed are applicable to other interdisciplinary classroom environments. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6003804&sortType%3Das [...] [article] Hands-on learning modules for interdisciplinary environments : an example with a focus on weather radar applications [texte imprimé] / Phillip B. Chilson, Auteur ; Mark B. Yeary, Auteur . - 2013 . - pp. 238 - 247. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 238 - 247 Mots-clés : Doppler  radar  Education  Electromagnetics  Meteorological  radar  Scattering  parameters Résumé : Learning modules provide an effective means of encouraging cognition and active learning. This paper discusses several such modules that have been developed within a course on weather radar applications intended for students from Electrical Engineering and Meteorology. The modules were designed both to promote interdisciplinary exchange between the students and to guide them from a theoretical to an applied understanding of weather radar and the interactions of radio waves with geophysical media. The learning modules introduce students to various means of acquiring weather radar data from real-time and archival sources and ways in which to query and visualize them. They are also tasked with analyzing data from several actual and significant meteorological events and asked to assess the strengths and limitations of current methods of retrieving rainfall rates. Data sources include both weather radars and complementary surface-based instrumentation. The modules may be used in a variety of locations and by a diversity of students. Although developed for weather radar applications, the concepts discussed are applicable to other interdisciplinary classroom environments. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6003804&sortType%3Das [...]

Electromagnetic levitation of a disc / Rodrigo Valle in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 248 - 254 Titre : Electromagnetic levitation of a disc Type de document : texte imprimé Auteurs : Rodrigo Valle, Auteur ; Fabio Neves, Auteur ; Rubens Jr. de Andrade, Auteur Année de publication : 2013 Article en page(s) : pp. 248 - 254 Note générale : Education Langues : Anglais (eng) Mots-clés : Electromagnetic  forces  Feedback  control  Magnetic  levitation  Mechatronics  Stability Résumé : This paper presents a teaching experiment that explores the levitation of a disc of ferromagnetic material in the presence of the magnetic field produced by a single electromagnet. In comparison to the classical experiment of the levitation of a sphere, the main advantage of the proposed laboratory bench is that the uniform magnetic field distribution in the air gap allows analytical calculations to be performed. This paper illustrates the important connection between theory, mathematical modeling, design, simulation, and experimental verification and emphasizes the educational opportunities that this experiment brings to subjects such as control, magnetic circuits, power electronics, and electromechanical energy conversion. The proposal can be seen as an introduction to the main issues of mechatronics and is being used as example to raise the interest of undergraduate electrical engineering students. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6032050&sortType%3Das [...] [article] Electromagnetic levitation of a disc [texte imprimé] / Rodrigo Valle, Auteur ; Fabio Neves, Auteur ; Rubens Jr. de Andrade, Auteur . - 2013 . - pp. 248 - 254. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 248 - 254 Mots-clés : Electromagnetic  forces  Feedback  control  Magnetic  levitation  Mechatronics  Stability Résumé : This paper presents a teaching experiment that explores the levitation of a disc of ferromagnetic material in the presence of the magnetic field produced by a single electromagnet. In comparison to the classical experiment of the levitation of a sphere, the main advantage of the proposed laboratory bench is that the uniform magnetic field distribution in the air gap allows analytical calculations to be performed. This paper illustrates the important connection between theory, mathematical modeling, design, simulation, and experimental verification and emphasizes the educational opportunities that this experiment brings to subjects such as control, magnetic circuits, power electronics, and electromechanical energy conversion. The proposal can be seen as an introduction to the main issues of mechatronics and is being used as example to raise the interest of undergraduate electrical engineering students. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6032050&sortType%3Das [...]

Introducing programmable logic to undergraduate engineering students in a digital electronics course / Elias Todorovich in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 255 - 262 Titre : Introducing programmable logic to undergraduate engineering students in a digital electronics course Type de document : texte imprimé Auteurs : Elias Todorovich, Auteur ; Jose A. Marone, Auteur ; Martin Vazquez, Auteur Année de publication : 2013 Article en page(s) : pp. 255 - 262 Note générale : Education Langues : Anglais (eng) Mots-clés : Active  teaching  Collaborative  problem  solving  Digital  electronics  Engineering  education  Programmable  logic Résumé : Due to significant technological advances and industry requirements, many universities have introduced programmable logic and hardware description languages into undergraduate engineering curricula. This has led to a number of logistical and didactical challenges, in particular for computer science students. In this paper, the integration of some programmable logic concepts into an introductory digital electronics course is presented. The proposed optional lab develops a printed circuit board that implements a programmable logic block. Another contribution is the collaborative problem-solving methodology used to achieve this goal. Surveys completed by the students, and their final grades, show that the lab has improved the quality of their education and has contributed to a successful integration of programmable logic concepts in an introductory digital electronics course. Because of its demands on students' time and effort, the lab favors the most motivated students. This suggests future research on a proposal for a lab that would be feasible within the time constraints for even the least motivated students. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6044735&sortType%3Das [...] [article] Introducing programmable logic to undergraduate engineering students in a digital electronics course [texte imprimé] / Elias Todorovich, Auteur ; Jose A. Marone, Auteur ; Martin Vazquez, Auteur . - 2013 . - pp. 255 - 262. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 255 - 262 Mots-clés : Active  teaching  Collaborative  problem  solving  Digital  electronics  Engineering  education  Programmable  logic Résumé : Due to significant technological advances and industry requirements, many universities have introduced programmable logic and hardware description languages into undergraduate engineering curricula. This has led to a number of logistical and didactical challenges, in particular for computer science students. In this paper, the integration of some programmable logic concepts into an introductory digital electronics course is presented. The proposed optional lab develops a printed circuit board that implements a programmable logic block. Another contribution is the collaborative problem-solving methodology used to achieve this goal. Surveys completed by the students, and their final grades, show that the lab has improved the quality of their education and has contributed to a successful integration of programmable logic concepts in an introductory digital electronics course. Because of its demands on students' time and effort, the lab favors the most motivated students. This suggests future research on a proposal for a lab that would be feasible within the time constraints for even the least motivated students. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6044735&sortType%3Das [...]

An educational laboratory for digital control and rapid prototyping of power electronic circuits / Sanghun Choi in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 263 - 270 Titre : An educational laboratory for digital control and rapid prototyping of power electronic circuits Type de document : texte imprimé Auteurs : Sanghun Choi, Auteur ; Maryam Saeedifard, Auteur Année de publication : 2013 Article en page(s) : pp. 263 - 270 Note générale : Education Langues : Anglais (eng) Mots-clés : Digital  control  MATLAB/simulink  environment  Micro-controller  Power  electronics  Rapid  prototyping Résumé : This paper describes a new educational power electronics laboratory that was developed primarily to reinforce experimentally the fundamental concepts presented in a power electronics course. The developed laboratory combines theoretical design, simulation studies, digital control, fabrication, and verification of power-electronic circuits based on a set of hardware and software tools. The salient feature of the laboratory is that it takes the students through a step-by-step design, implementation, and digital control procedure for a set of power electronic circuits. A detailed description of the tools along with their use in the developed laboratory is presented. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6036198&sortType%3Das [...] [article] An educational laboratory for digital control and rapid prototyping of power electronic circuits [texte imprimé] / Sanghun Choi, Auteur ; Maryam Saeedifard, Auteur . - 2013 . - pp. 263 - 270. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 263 - 270 Mots-clés : Digital  control  MATLAB/simulink  environment  Micro-controller  Power  electronics  Rapid  prototyping Résumé : This paper describes a new educational power electronics laboratory that was developed primarily to reinforce experimentally the fundamental concepts presented in a power electronics course. The developed laboratory combines theoretical design, simulation studies, digital control, fabrication, and verification of power-electronic circuits based on a set of hardware and software tools. The salient feature of the laboratory is that it takes the students through a step-by-step design, implementation, and digital control procedure for a set of power electronic circuits. A detailed description of the tools along with their use in the developed laboratory is presented. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6036198&sortType%3Das [...]

Design of optical systems with extended depth of field / Carme Ferran in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 271 - 278 Titre : Design of optical systems with extended depth of field : an educational approach to wavefront coding techniques Type de document : texte imprimé Auteurs : Carme Ferran, Auteur ; Salvador Bosch, Auteur ; Artur Carnicer, Auteur Année de publication : 2013 Article en page(s) : pp. 271 - 278 Note générale : Education Langues : Anglais (eng) Mots-clés : Education  Image  processing  Optical  imaging  Optical  transfer  function  Spatial  light  modulators Résumé : A practical activity designed to introduce wavefront coding techniques as a method to extend the depth of field in optical systems is presented. The activity is suitable for advanced undergraduate students since it combines different topics in optical engineering such as optical system design, aberration theory, Fourier optics, and digital image processing. This paper provides the theoretical background and technical information for performing the experiment. The proposed activity requires students able to develop a wide range of skills since they are expected to deal with optical components, including spatial light modulators, and develop scripts to perform some calculations. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6036004&sortType%3Das [...] [article] Design of optical systems with extended depth of field : an educational approach to wavefront coding techniques [texte imprimé] / Carme Ferran, Auteur ; Salvador Bosch, Auteur ; Artur Carnicer, Auteur . - 2013 . - pp. 271 - 278. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 271 - 278 Mots-clés : Education  Image  processing  Optical  imaging  Optical  transfer  function  Spatial  light  modulators Résumé : A practical activity designed to introduce wavefront coding techniques as a method to extend the depth of field in optical systems is presented. The activity is suitable for advanced undergraduate students since it combines different topics in optical engineering such as optical system design, aberration theory, Fourier optics, and digital image processing. This paper provides the theoretical background and technical information for performing the experiment. The proposed activity requires students able to develop a wide range of skills since they are expected to deal with optical components, including spatial light modulators, and develop scripts to perform some calculations. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6036004&sortType%3Das [...]

Determinants of differential item functioning in an elementary mathematics test with accommodations / Soo Eun Chae in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 279 - 284 Titre : Determinants of differential item functioning in an elementary mathematics test with accommodations Type de document : texte imprimé Auteurs : Soo Eun Chae, Auteur ; Doyoung Kim, Auteur ; Jae-Ho Han, Auteur Année de publication : 2013 Article en page(s) : pp. 279 - 284 Note générale : Education Langues : Anglais (eng) Mots-clés : Accommodation  Differential  item  functioning  (DIF)  Item  types  Mathematics  assessment  Measurement  equivalence Résumé : Those items or test characteristics that are likely to result in differential item functioning (DIF) across accommodated test forms in statewide tests have received little attention. An examination of elementary-level student performance across accommodated test forms in a large-scale mathematics assessment revealed DIF variations by grades, accommodation conditions, graphic inclusion, and item types (i.e., constructed response versus multiple choice). In general, items with a lower grade, graphic, constructed-response format appear to benefit accommodated examinees for a statewide mathematics test. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6054037&sortType%3Das [...] [article] Determinants of differential item functioning in an elementary mathematics test with accommodations [texte imprimé] / Soo Eun Chae, Auteur ; Doyoung Kim, Auteur ; Jae-Ho Han, Auteur . - 2013 . - pp. 279 - 284. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 279 - 284 Mots-clés : Accommodation  Differential  item  functioning  (DIF)  Item  types  Mathematics  assessment  Measurement  equivalence Résumé : Those items or test characteristics that are likely to result in differential item functioning (DIF) across accommodated test forms in statewide tests have received little attention. An examination of elementary-level student performance across accommodated test forms in a large-scale mathematics assessment revealed DIF variations by grades, accommodation conditions, graphic inclusion, and item types (i.e., constructed response versus multiple choice). In general, items with a lower grade, graphic, constructed-response format appear to benefit accommodated examinees for a statewide mathematics test. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6054037&sortType%3Das [...]

Fair and square computation of inverse {cal Z} -transforms of rational functions / Marcos Vicente Moreira in IEEE transactions on education, Vol. 55 N° 2 (Mai 2012) 

Public ISBD [article]  in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 285 - 290 Titre : Fair and square computation of inverse {cal Z} -transforms of rational functions Type de document : texte imprimé Auteurs : Marcos Vicente Moreira, Auteur ; Joao Carlos Basilio, Auteur Année de publication : 2013 Article en page(s) : pp. 285 - 290 Note générale : Education Langues : Anglais (eng) Mots-clés : Control  education  Discrete-time  signals  Discrete-time  systems  Inverse  {cal  Z}-transformation  Teaching  methodology Résumé : All methods presented in textbooks for computing inverse Z-transforms of rational functions have some limitation: 1) the direct division method does not, in general, provide enough information to derive an analytical expression for the time-domain sequence x(k) whose Z-transform is X(z) ; 2) computation using the inversion integral method becomes labored when X(z)zk-1 has poles at the origin of the complex plane; 3) the partial-fraction expansion method, in spite of being acknowledged as the simplest and easiest one to compute the inverse Z-transform and being widely used in textbooks, lacks a standard procedure like its inverse Laplace transform counterpart. This paper addresses all the difficulties of the existing methods for computing inverse Z -transforms of rational functions, presents an easy and straightforward way to overcome the limitation of the inversion integral method when X(z)zk-1 has poles at the origin, and derives five expressions for the pairs of time-domain sequences and corresponding Z-transforms that are actually needed in the computation of inverse Z -transform using partial-fraction expansion. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6047582&sortType%3Das [...] [article] Fair and square computation of inverse {cal Z} -transforms of rational functions [texte imprimé] / Marcos Vicente Moreira, Auteur ; Joao Carlos Basilio, Auteur . - 2013 . - pp. 285 - 290. Education Langues : Anglais (eng) in IEEE transactions on education > Vol. 55 N° 2 (Mai 2012) . - pp. 285 - 290 Mots-clés : Control  education  Discrete-time  signals  Discrete-time  systems  Inverse  {cal  Z}-transformation  Teaching  methodology Résumé : All methods presented in textbooks for computing inverse Z-transforms of rational functions have some limitation: 1) the direct division method does not, in general, provide enough information to derive an analytical expression for the time-domain sequence x(k) whose Z-transform is X(z) ; 2) computation using the inversion integral method becomes labored when X(z)zk-1 has poles at the origin of the complex plane; 3) the partial-fraction expansion method, in spite of being acknowledged as the simplest and easiest one to compute the inverse Z-transform and being widely used in textbooks, lacks a standard procedure like its inverse Laplace transform counterpart. This paper addresses all the difficulties of the existing methods for computing inverse Z -transforms of rational functions, presents an easy and straightforward way to overcome the limitation of the inversion integral method when X(z)zk-1 has poles at the origin, and derives five expressions for the pairs of time-domain sequences and corresponding Z-transforms that are actually needed in the computation of inverse Z -transform using partial-fraction expansion. ISSN : 0018-9359 En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6047582&sortType%3Das [...]

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