Katarzyna Moscinska - Academia.edu (original) (raw)

Papers by Katarzyna Moscinska

Research paper thumbnail of Markov random fields and constrained optimization for textured image segmentation

Machine graphics & vision, 1998

Research paper thumbnail of Estimation of the linear-phase IIR filter order based on FIR prototype with prescribed group delay

International Journal of Microelectronics and Computer Science, 2014

Research paper thumbnail of Barriers in Modern Web-based Education

Web-based Education, 2010

ABSTRACT Web-based blended learning at Silesian University of Technology, Poland, is supported by... more ABSTRACT Web-based blended learning at Silesian University of Technology, Poland, is supported by integrated elearning service called Distant Education Platform (DEP). The authors discuss general framework concerning DEP and present the ideas of DEP-based knowledge delivery. Introduction of modern technologies has changed education process significantly. The quality of courses supported by DEP has been improved, the number of services has increased and the teachers’ workload has been reduced. Nevertheless, the number of courses that have been fully transformed into blended version is insufficient. There are many barriers to successful implementation of web-based learning - technical, mental and pedagogical. In the paper the authors present comprehensive list of potential barriers, and give some guidelines how to overcome them.

Research paper thumbnail of A Procedure for Quasi-Equiripple Linear-Phase IIR Filters Design

International Journal of Electronics and Telecommunications, 2010

A Procedure for Quasi-Equiripple Linear-Phase IIR Filters DesignThe linear-phase IIR filters are ... more A Procedure for Quasi-Equiripple Linear-Phase IIR Filters DesignThe linear-phase IIR filters are described in many cases, mainly due to distortion-free transmission of signals. One of the major problems of IIR filter design is stability, which can be obtained with suitable value of group delay τ. This paper concerns calculation of filter orderNand group delay τ in case of quasi-equiripple design of IIR filters. We propose a novel procedure for determiningNand τ values; the procedure is valid for all types of filters with arbitrary number of zeros and a few non-zero poles. Evaluation of the proposed approach as well as examples illustrating its application are provided in the paper.

Research paper thumbnail of Development and Evaluation of Computer Assisted Exam – Circuit Theory Example

In the paper the redevelopment of assessments and examinations from the traditional model into th... more In the paper the redevelopment of assessments and examinations from the traditional model into the computer-assisted multi-choice model is presented. The guidelines for computer-assisted multi-choice test development and evaluation [1] are discussed and practically verified on Circuit Theory exam. The information channel idea [2] has been applied for elaboration of the new model. Maximization of the relative mutual information is the criterion for the exam parameters tuning. The genetic algorithm method is utilized for optimization purpose. The numerous advantages of computer-assisted tests have been confirmed and significant time savings have been obtained. The benefits of the computer-assisted multi-choice summative assessment have been appreciated not only by the tutors, but by the students as well. KEY WORDS e-learning, computer assisted assessment, multi-choice test

Research paper thumbnail of Web-Based Assessment and Examination System - from Experiment to Practice

Research paper thumbnail of Effective computer-assisted assessment: Challenges and solutions

2018 IEEE Global Engineering Education Conference (EDUCON), 2018

Evaluation of students' learning outcomes becomes a challenge in massive engineering course. ... more Evaluation of students' learning outcomes becomes a challenge in massive engineering course. e-assessment has been perceived as significant aid in this task at Silesian University of Technology (SUT), Gliwice, Poland, since its introduction in 2005. In the last ten years the method has been significantly improved, based on new technology, e-pedagogy, teachers' experience and students' feedback. Introduction of "flipped classroom" in 2012 was preceded by rearrangement of course content, in order to obtain proper relation between e-content and e-assessment. In the first part of the paper we describe revision and modification of both resources and methodology of e-assessment, undertaken in the last few years at the university. Numerous guidelines and good practices concerning e-pedagogy and e-assessment design are given. As students are mostly focused on tasks which directly contribute to final grades, we propose intermediate methods of assessment, named "for...

Research paper thumbnail of Students' attitude to formative web-based assessment

Internet-based assessment has been recently introduced into many courses taught at Silesian Unive... more Internet-based assessment has been recently introduced into many courses taught at Silesian University of Technology, Gliwice, Poland. We have started with summative assessment (examination) and non-obligatory formative assessment. The next step was the implementation of obligatory formative assessment for some groups of students. In the paper the applied forms of formative assessment are thoroughly described. We present the method, obtained results, and students attitude to different forms of assessment. Students have been surveyed on various aspects of web-based assessment - in particular, on the methods of cheating. We discuss the range of cheating, ways of cheating and precautions to be taken. The authors' experience and findings may be helpful for teachers applying Internet for students' assessment.

Research paper thumbnail of A quasi-equiripple design of IIR filters with unequal number of poles and zeros

Proceedings of the 17th International Conference Mixed Design of Integrated Circuits and Systems - MIXDES 2010, 2010

IIR filter design often comprises approximation of both magnitude and phase responses. One of the... more IIR filter design often comprises approximation of both magnitude and phase responses. One of the major problems is filter stability, which can be obtained with suitable value of group delay τ. This paper concerns calculation of filter order N and group delay τ in case of quasi-equiripple design of IIR filters. We propose a novel procedure for determining N and τ values; the procedure is valid for all types of filters with arbitrary number of zeros and a few non-zero poles. Evaluation of the proposed approach as well as examples illustrating its application are included in the paper.

Research paper thumbnail of Introduction of summative and formative web-based assessment to the circuit theory course

Over the last few years the Circuit Theory course at Silesian University of Technology, Gliwice, ... more Over the last few years the Circuit Theory course at Silesian University of Technology, Gliwice, Poland has been gradually converted into blended e-course [1]. Recently the Web-based assessment (WBA) has been introduced [2]. The application of WBA enables to decrease costs and first of all enhance quality of learning. The authors describe their first experience with summative as well as formative assessment. The summative assessment proved to be very successful, even though some modifications should be introduced. The results of formative assessment are less satisfactory, due to the students' attitude to learning. The paper describes the applied forms of assessments, enlightens the main difficulties and provides some tips for teachers introducing WBA, especially in case of technical university courses.

Research paper thumbnail of Dynamic Neural Clustering

Research paper thumbnail of Information Channel Based Measure of Effectiveness of Computer-Assisted Assessment in Flipped Classroom

Properly designed Assessment Program, both Formative tests and Summative test (Exam), is the basi... more Properly designed Assessment Program, both Formative tests and Summative test (Exam), is the basic part of arbitrary engineering course. Today, computerization of Assessment is a norm and in the 2nd generation of Smart Classroom, computerization means first of all active use of mobile technology. Then, measurement of effectiveness of Computer-Assisted Assessment, achievements of learning outcomes, correlation between number of Formative tests solved by the students and the Exam Pass/Fail ratio, is absolutely essential. The proposed measurement method is based on Discrete Memoryless Channel principles and utilizes mutual information as the measure of this correlation. The Case Study is presented and it confirms usefulness of the proposed measure. Some guidelines, good practices in Computer Assisted Assessment design are given.

Research paper thumbnail of Computer Assisted and Web-based Learning Techniques in Electronics and Telecommunication Education Process

This paper is dedicated to modern, computer-aided and distance learning education methods. Firstl... more This paper is dedicated to modern, computer-aided and distance learning education methods. Firstly, general outlook is presented. Then, practical applications developed at the Faculty of Automatic Control, Electronics and Computer Science of the Silesian University of Technology are presented with special emphasis on Electronics and Telecommunication specializations and Circuit Theory (CT) and Signal Processing (SP) courses. Various aspects of evaluation of distance learning methods are discussed, including the output of the international cooperation, internal projects and future plans.

Research paper thumbnail of Application of Bloom ’ s taxonomy for increasing teaching efficiency – case study

⎯ In this paper we present a method for increasing teaching efficiency of a basic engineering cou... more ⎯ In this paper we present a method for increasing teaching efficiency of a basic engineering course. Circuit Theory is an obligatory, two semester course delivered to all students of the Faculty of Automatic Control, Electronics and Computer Science, Gliwice, Poland. Since 2005, the course is delivered in the blended e-learning version. In the last few years we observe increasing problems with the laboratory work students neither possess theoretical background of an exercise, nor can perform successfully measurements and interpret obtained results. The goal of our study was to identify main reasons of students’ poor performance in the laboratory. We have verified whether all course components enable sufficient preparation for the laboratory work. We have also analysed the contents of laboratory exercises and pre-lab short tests in order to find out which levels of knowledge they address. Bloom’s taxonomy of learning outcomes has been applied in order to classify questions and probl...

Research paper thumbnail of Stakeholders-oriented Quality of Education Assurance System for successful institutional accreditation

2014 IEEE Global Engineering Education Conference (EDUCON), 2014

Research paper thumbnail of Students' attitude to formative web-based assessment

Proceedings of the Seventh …, 2008

Internet-based assessment has been recently introduced into many courses taught at Silesian Unive... more Internet-based assessment has been recently introduced into many courses taught at Silesian University of Technology, Gliwice, Poland. We have started with summative assessment (examination) and non-obligatory formative assessment. The next step was ...

Research paper thumbnail of From Traditional Lecture to Video-podcast Based Lecture, Case Studies

In the first part, the paper presents an investigation into lecture attendance. The case study wa... more In the first part, the paper presents an investigation into lecture attendance. The case study was conducted on a group of 309 1 st year and 3 rd year undergraduate engineering students of the Silesian University of Technology to assess relevance of attending lectures, investigate why they are not attending and what could be done to change this trend, as seen from student perspective. The students have been surveyed by means of questionnaire-type surveys. Increase of Information Technology (IT) based components, redevelopment of f2f traditional lecture into f2f discussion forum preceded by online video podcasts are the most demanded modifications. Following this findings, educational uses of podcasting in supporting and enhancing the lecture is briefly discussed. New model of video-podcasting is proposed. This model is now tested, on a group of Circuit Theory (CT) course students. However this case study is still in progress, the already gained feedback from both, students and lecturer allow to state that use of podcasting in supporting lectures is very promising, under the condition that it is not determined by the potential of the IT, but rather by the way in which it is perceived by educators and students.

Research paper thumbnail of Comments on linear-phase IIR filter design using weighted LS optimization

Icses 2010 International Conference on Signals and Electronic Circuits, Sep 1, 2010

This paper presents authors outcome of numerous experiments with linear-phase IIR filters design.... more This paper presents authors outcome of numerous experiments with linear-phase IIR filters design. The overview of direct algorithms is made and discussion on weighted least squares (WLS) method is included. Some remarks concerning efficiency of the methods are presented, in particular, we comment on the convergence ability of discussed algorithms and the influence of specification parameters on obtained filter properties. The original comparison between computational efficiency of IIR and FIR filters are also demonstrated. For some filters we evaluate cut-off value of the transition band width for which IIR filters are computationally more efficient than their FIR counterparts. This kind of information can help to choose appropriate type of filter and simplify design method.

Research paper thumbnail of A quasi-equiripple design of IIR filters with unequal number of poles and zeros

Proceedings of the 17th International Conference Mixed Design of Integrated Circuits and Systems Mixdes 2010, Jun 24, 2010

IIR filter design often comprises approximation of both magnitude and phase responses. One of the... more IIR filter design often comprises approximation of both magnitude and phase responses. One of the major problems is filter stability, which can be obtained with suitable value of group delay IJ. This paper concerns calculation of filter order N and group delay IJ in case of quasi-equiripple design of IIR filters. We propose a novel procedure for determining N and IJ values; the procedure is valid for all types of filters with arbitrary number of zeros and a few non-zero poles. Evaluation of the proposed approach as well as examples illustrating its application are included in the paper.

Research paper thumbnail of Barriers to Innovation in E–Pedagogy, Case Study

Research paper thumbnail of Markov random fields and constrained optimization for textured image segmentation

Machine graphics & vision, 1998

Research paper thumbnail of Estimation of the linear-phase IIR filter order based on FIR prototype with prescribed group delay

International Journal of Microelectronics and Computer Science, 2014

Research paper thumbnail of Barriers in Modern Web-based Education

Web-based Education, 2010

ABSTRACT Web-based blended learning at Silesian University of Technology, Poland, is supported by... more ABSTRACT Web-based blended learning at Silesian University of Technology, Poland, is supported by integrated elearning service called Distant Education Platform (DEP). The authors discuss general framework concerning DEP and present the ideas of DEP-based knowledge delivery. Introduction of modern technologies has changed education process significantly. The quality of courses supported by DEP has been improved, the number of services has increased and the teachers’ workload has been reduced. Nevertheless, the number of courses that have been fully transformed into blended version is insufficient. There are many barriers to successful implementation of web-based learning - technical, mental and pedagogical. In the paper the authors present comprehensive list of potential barriers, and give some guidelines how to overcome them.

Research paper thumbnail of A Procedure for Quasi-Equiripple Linear-Phase IIR Filters Design

International Journal of Electronics and Telecommunications, 2010

A Procedure for Quasi-Equiripple Linear-Phase IIR Filters DesignThe linear-phase IIR filters are ... more A Procedure for Quasi-Equiripple Linear-Phase IIR Filters DesignThe linear-phase IIR filters are described in many cases, mainly due to distortion-free transmission of signals. One of the major problems of IIR filter design is stability, which can be obtained with suitable value of group delay τ. This paper concerns calculation of filter orderNand group delay τ in case of quasi-equiripple design of IIR filters. We propose a novel procedure for determiningNand τ values; the procedure is valid for all types of filters with arbitrary number of zeros and a few non-zero poles. Evaluation of the proposed approach as well as examples illustrating its application are provided in the paper.

Research paper thumbnail of Development and Evaluation of Computer Assisted Exam – Circuit Theory Example

In the paper the redevelopment of assessments and examinations from the traditional model into th... more In the paper the redevelopment of assessments and examinations from the traditional model into the computer-assisted multi-choice model is presented. The guidelines for computer-assisted multi-choice test development and evaluation [1] are discussed and practically verified on Circuit Theory exam. The information channel idea [2] has been applied for elaboration of the new model. Maximization of the relative mutual information is the criterion for the exam parameters tuning. The genetic algorithm method is utilized for optimization purpose. The numerous advantages of computer-assisted tests have been confirmed and significant time savings have been obtained. The benefits of the computer-assisted multi-choice summative assessment have been appreciated not only by the tutors, but by the students as well. KEY WORDS e-learning, computer assisted assessment, multi-choice test

Research paper thumbnail of Web-Based Assessment and Examination System - from Experiment to Practice

Research paper thumbnail of Effective computer-assisted assessment: Challenges and solutions

2018 IEEE Global Engineering Education Conference (EDUCON), 2018

Evaluation of students' learning outcomes becomes a challenge in massive engineering course. ... more Evaluation of students' learning outcomes becomes a challenge in massive engineering course. e-assessment has been perceived as significant aid in this task at Silesian University of Technology (SUT), Gliwice, Poland, since its introduction in 2005. In the last ten years the method has been significantly improved, based on new technology, e-pedagogy, teachers' experience and students' feedback. Introduction of "flipped classroom" in 2012 was preceded by rearrangement of course content, in order to obtain proper relation between e-content and e-assessment. In the first part of the paper we describe revision and modification of both resources and methodology of e-assessment, undertaken in the last few years at the university. Numerous guidelines and good practices concerning e-pedagogy and e-assessment design are given. As students are mostly focused on tasks which directly contribute to final grades, we propose intermediate methods of assessment, named "for...

Research paper thumbnail of Students' attitude to formative web-based assessment

Internet-based assessment has been recently introduced into many courses taught at Silesian Unive... more Internet-based assessment has been recently introduced into many courses taught at Silesian University of Technology, Gliwice, Poland. We have started with summative assessment (examination) and non-obligatory formative assessment. The next step was the implementation of obligatory formative assessment for some groups of students. In the paper the applied forms of formative assessment are thoroughly described. We present the method, obtained results, and students attitude to different forms of assessment. Students have been surveyed on various aspects of web-based assessment - in particular, on the methods of cheating. We discuss the range of cheating, ways of cheating and precautions to be taken. The authors' experience and findings may be helpful for teachers applying Internet for students' assessment.

Research paper thumbnail of A quasi-equiripple design of IIR filters with unequal number of poles and zeros

Proceedings of the 17th International Conference Mixed Design of Integrated Circuits and Systems - MIXDES 2010, 2010

IIR filter design often comprises approximation of both magnitude and phase responses. One of the... more IIR filter design often comprises approximation of both magnitude and phase responses. One of the major problems is filter stability, which can be obtained with suitable value of group delay τ. This paper concerns calculation of filter order N and group delay τ in case of quasi-equiripple design of IIR filters. We propose a novel procedure for determining N and τ values; the procedure is valid for all types of filters with arbitrary number of zeros and a few non-zero poles. Evaluation of the proposed approach as well as examples illustrating its application are included in the paper.

Research paper thumbnail of Introduction of summative and formative web-based assessment to the circuit theory course

Over the last few years the Circuit Theory course at Silesian University of Technology, Gliwice, ... more Over the last few years the Circuit Theory course at Silesian University of Technology, Gliwice, Poland has been gradually converted into blended e-course [1]. Recently the Web-based assessment (WBA) has been introduced [2]. The application of WBA enables to decrease costs and first of all enhance quality of learning. The authors describe their first experience with summative as well as formative assessment. The summative assessment proved to be very successful, even though some modifications should be introduced. The results of formative assessment are less satisfactory, due to the students' attitude to learning. The paper describes the applied forms of assessments, enlightens the main difficulties and provides some tips for teachers introducing WBA, especially in case of technical university courses.

Research paper thumbnail of Dynamic Neural Clustering

Research paper thumbnail of Information Channel Based Measure of Effectiveness of Computer-Assisted Assessment in Flipped Classroom

Properly designed Assessment Program, both Formative tests and Summative test (Exam), is the basi... more Properly designed Assessment Program, both Formative tests and Summative test (Exam), is the basic part of arbitrary engineering course. Today, computerization of Assessment is a norm and in the 2nd generation of Smart Classroom, computerization means first of all active use of mobile technology. Then, measurement of effectiveness of Computer-Assisted Assessment, achievements of learning outcomes, correlation between number of Formative tests solved by the students and the Exam Pass/Fail ratio, is absolutely essential. The proposed measurement method is based on Discrete Memoryless Channel principles and utilizes mutual information as the measure of this correlation. The Case Study is presented and it confirms usefulness of the proposed measure. Some guidelines, good practices in Computer Assisted Assessment design are given.

Research paper thumbnail of Computer Assisted and Web-based Learning Techniques in Electronics and Telecommunication Education Process

This paper is dedicated to modern, computer-aided and distance learning education methods. Firstl... more This paper is dedicated to modern, computer-aided and distance learning education methods. Firstly, general outlook is presented. Then, practical applications developed at the Faculty of Automatic Control, Electronics and Computer Science of the Silesian University of Technology are presented with special emphasis on Electronics and Telecommunication specializations and Circuit Theory (CT) and Signal Processing (SP) courses. Various aspects of evaluation of distance learning methods are discussed, including the output of the international cooperation, internal projects and future plans.

Research paper thumbnail of Application of Bloom ’ s taxonomy for increasing teaching efficiency – case study

⎯ In this paper we present a method for increasing teaching efficiency of a basic engineering cou... more ⎯ In this paper we present a method for increasing teaching efficiency of a basic engineering course. Circuit Theory is an obligatory, two semester course delivered to all students of the Faculty of Automatic Control, Electronics and Computer Science, Gliwice, Poland. Since 2005, the course is delivered in the blended e-learning version. In the last few years we observe increasing problems with the laboratory work students neither possess theoretical background of an exercise, nor can perform successfully measurements and interpret obtained results. The goal of our study was to identify main reasons of students’ poor performance in the laboratory. We have verified whether all course components enable sufficient preparation for the laboratory work. We have also analysed the contents of laboratory exercises and pre-lab short tests in order to find out which levels of knowledge they address. Bloom’s taxonomy of learning outcomes has been applied in order to classify questions and probl...

Research paper thumbnail of Stakeholders-oriented Quality of Education Assurance System for successful institutional accreditation

2014 IEEE Global Engineering Education Conference (EDUCON), 2014

Research paper thumbnail of Students' attitude to formative web-based assessment

Proceedings of the Seventh …, 2008

Internet-based assessment has been recently introduced into many courses taught at Silesian Unive... more Internet-based assessment has been recently introduced into many courses taught at Silesian University of Technology, Gliwice, Poland. We have started with summative assessment (examination) and non-obligatory formative assessment. The next step was ...

Research paper thumbnail of From Traditional Lecture to Video-podcast Based Lecture, Case Studies

In the first part, the paper presents an investigation into lecture attendance. The case study wa... more In the first part, the paper presents an investigation into lecture attendance. The case study was conducted on a group of 309 1 st year and 3 rd year undergraduate engineering students of the Silesian University of Technology to assess relevance of attending lectures, investigate why they are not attending and what could be done to change this trend, as seen from student perspective. The students have been surveyed by means of questionnaire-type surveys. Increase of Information Technology (IT) based components, redevelopment of f2f traditional lecture into f2f discussion forum preceded by online video podcasts are the most demanded modifications. Following this findings, educational uses of podcasting in supporting and enhancing the lecture is briefly discussed. New model of video-podcasting is proposed. This model is now tested, on a group of Circuit Theory (CT) course students. However this case study is still in progress, the already gained feedback from both, students and lecturer allow to state that use of podcasting in supporting lectures is very promising, under the condition that it is not determined by the potential of the IT, but rather by the way in which it is perceived by educators and students.

Research paper thumbnail of Comments on linear-phase IIR filter design using weighted LS optimization

Icses 2010 International Conference on Signals and Electronic Circuits, Sep 1, 2010

This paper presents authors outcome of numerous experiments with linear-phase IIR filters design.... more This paper presents authors outcome of numerous experiments with linear-phase IIR filters design. The overview of direct algorithms is made and discussion on weighted least squares (WLS) method is included. Some remarks concerning efficiency of the methods are presented, in particular, we comment on the convergence ability of discussed algorithms and the influence of specification parameters on obtained filter properties. The original comparison between computational efficiency of IIR and FIR filters are also demonstrated. For some filters we evaluate cut-off value of the transition band width for which IIR filters are computationally more efficient than their FIR counterparts. This kind of information can help to choose appropriate type of filter and simplify design method.

Research paper thumbnail of A quasi-equiripple design of IIR filters with unequal number of poles and zeros

Proceedings of the 17th International Conference Mixed Design of Integrated Circuits and Systems Mixdes 2010, Jun 24, 2010

IIR filter design often comprises approximation of both magnitude and phase responses. One of the... more IIR filter design often comprises approximation of both magnitude and phase responses. One of the major problems is filter stability, which can be obtained with suitable value of group delay IJ. This paper concerns calculation of filter order N and group delay IJ in case of quasi-equiripple design of IIR filters. We propose a novel procedure for determining N and IJ values; the procedure is valid for all types of filters with arbitrary number of zeros and a few non-zero poles. Evaluation of the proposed approach as well as examples illustrating its application are included in the paper.

Research paper thumbnail of Barriers to Innovation in E–Pedagogy, Case Study