Short Term Scientific Missions (STSM) are institutional visits aimed at supporting individual mobility, fostering collaboration between individuals. STSM applicants must be engaged in an official research programme as a PhD Student or postdoctoral fellow or can be employed by, or affiliated to, an institution, organisation or legal entity which has within its remit a clear association with performing research. The institutions / organisation or legal entity where applicants pursue their main strand of research are considered as Home institutions. The Host institution is the institution / organisation that will host the successful applicant.

The STSM must tackle specific objectives of the COST Action CA15225 and the tasks of the Working Group(s). The applicant should be stress how the STSM contributes to the expected deliverables of the Action described in the Memorandum of Understanding.

STSM must respect the following criteria:

  • They must have a minimum duration of 5 calendar days.
  • They must have a maximum duration of 90 calendar days.
  • STSM need to be carried out in their entirety within a single Grant Period and always within the Action’s lifetim

Specific additional provisions have also been made possible to encourage the participation of Early Career Investigators (ECI) in STSM. To qualify for these specific provisions, the following conditions apply:

  • The mission must have a minimum duration of 91 calendar days.
  • The mission must have a maximum duration of 180 calendar days.
  • STSM performed by ECI need to be carried out in their entirety within a single Grant Period and always within the Action’s lifetime.

STSM – Financial support

An STSM Grant is a fixed financial contribution which takes into consideration the budget request of the applicant and the outcome of the evaluation of the STSM application. STSM Grants do not necessarily cover all expenses related to undertaking a given mission.  The calculation of the financial contribution for each STSM must respect the following criteria:

  • Up to a maximum of EUR 2 500 in total can be afforded to each successful applicant;
  • Up to a maximum of EUR 160 per day can be afforded for accommodation and meal expenses.

Specific provisions have been introduced to enable researchers from ITC participating in the respective COST Action to receive 50% of their STSM Grant when they complete the first day of their STSM. The remaining 50% of the Grant is payable once the administrative requirements have been satisfied. For ECIs, the calculation for an increased financial contribution must respect the following criteria:

  • Up to a maximum of EUR 3 500 in total can be afforded to ECIs for missions with a duration of between 91 and 180 calendar days;
  • Up to a maximum of EUR 160 per day can be afforded for accommodation and meal expenses.

STSM Coordinator: Biljana Jolevska-Tuneska,

Please apply using the following .

In the initial STSM request, it is necessary to provide Academic Details and Motivation and Workplan Summary, where the applicant must address the following items:

  • Aim and motivation – please explain the scientific and/or other motivation for the STSM and what scientific and/or other outcomes you aim to accomplish with the STSM
  • Proposed contribution to the scientific objectives of the Action
  • Techniques – please detail what techniques or equipment you may learn to use (if applicable)
  • Planning – please detail the steps you will take to achieve your proposed aim

Submitting the request, the applicant also has to to provide the following documents:

  • A full C.V. (including a list of academic publications – if applicable) once not being registered in e-COST yet,
  • A letter of invitation from a senior researcher affiliated to the Host institution,
  • A motivation letter including a work plan detailing the proposed activities,
  • A support letter / email from the Home Institution.

Those that undertake an STSM must compile  and upload a Scientific Report (available in e-COST system) that describes:

  • Purpose of the STSM,
  • Work carried out during the STSM,
  • Main results obtained,
  • Future collaboration.

The Scientific Report must be approved by the Host insitituion (local supervisor). After all required support documents are uploaded, the STSM coordinator approves the succesful STSM that is later reimbursed by the Grant Holder.

The STSM user guide can be downloaded here:

Granted STSMs

STSM Topic: Model Reference Adaptive Control for Closed Loop Fractional Order System
Applicant: Baris Baykant Alagoz, Inonu University, Turkey
Host: Eduard Petlenkov, Aleksei Tepljakov, Tallinn University of Technology, Estonia
STSM Period:13-02-2017 to 25-02-2017Read more
STSM Topic: Fractional Order Systems
Applicant: Abolhassan Razminia, 3mE, TU Delft, The Netherlands
Host: Igor Podlubny, Technical University of Kosice, Slovakia
STSM Period:04-03-2017 to 14-03-2017Read more
STSM Topic: Fractional-order speech signal prediction
Applicant: Tomas Skovranek, Technical University of Kosice, Slovakia
Host: Vladimir Despotovic, University of Belgrade, Serbia
STSM Period:20-02-2017 to 26-02-2017Read more
STSM Topic: Fractional-order elements based on RC-EDP design technique
Applicant: Jaroslav Koton, Brno University of Technology, Czech Republic
Host: Peter Ushakov, Kalashnikov Izhevsk State Technical University, Russia
STSM Period:13-02-2017 to 25-02-2017Read more
STSM Topic: Fractional-order control systems research with group at TU Delft, Netherlands
Applicant: Zuzana Polesakova, Brno University of Technology, Czech Republic
Host: Hassan HosseinNia, Delft University of Technology, The Netherlands
STSM Period:05-02-2017 to 12-02-2017Read more
STSM Topic: Fractional–order systems’ synthesis and analysis
Applicant: Jan Dvorak, Brno University of Technology, Czech Republic
Host: Costas Psychalinos, Univeristy of Patras, Greece
STSM Period:05-03-2017 to 12-03-2017Read more
STSM Topic: Modeling of fractional-order elements based on fractional calculus and applications in analog circuits
Applicant: Aslihan Kartci, Brno University of Technology, Czech Republic
Host: Costas Psychalinos, Univeristy of Patras, Greece
STSM Period:05-03-2017 to 17-03-2017Read more

Model Reference Adaptive Control for Closed Loop Fractional Order System, (from Turkey to Estonia)

In Cost Action CA15225, we are working on Task 4.2. In this task, we work on implementations of model reference adaptive control (MRAC) for fractional order systems in Work Group 4 (WG4). The aim of Short-Time Scientific Mission (STSM) by collaboration of Dr. Aleksei Tepljakov at Alpha Control Laboratory in Tallinn University of Technology was to gather information and gain experience with fractional order modeling properties of FOMCON toolbox. During two weeks STSM, we developed Matlab script for fractional order MRAC system design and simulations. This script combines fractional order system modeling properties of FOMCON toolbox and simulate a MRAC fractional order PID control system. We also prepared a conference paper to share results of this study as an output of Cost Action. This STSM contributes to outputs of COST Action CA15225 related with Task 4.3 in WG4.


Fractional Order Systems, (from Netherlands to Slovakia)

The main purpose of the STSM was sharing the knowledge in fractional order systems between Abolhassan Razminia and the experts in Technical University of Kosice, Kosice, Slovac Republic. Abolhassan Razminia had several meeting with Prof. Podlubny and his colleagues about the fractioal calclus and future collaorations. Moreover, he presented a seminar titled Fractional Order Optimal Control Systems which descried in this report. Indeed, one of the main problem that must be recognized and revisited is the optimal control theory with fractional order models of the processes. The main aim in this STSM was discussing about the interrelationship between fractional calculus and optimal control. Future collaboration on the fractional order systems has bee discussed. The main results and deliverables reached during the STSM show that by using traditional Hamiltonian formalism we can extend the optimal control theory in the light of FC, whereas the main problematic issue in this new extension is the numerical implementation. An important issue that must be considered in the FC-community is trying it to the real processes not only unrealistic examples.


Fractional-order speech signal prediction, (from Slovakia to Serbia)

The Short Term Scientific Mission (STSM) undertaken at the University of Belgrade, Technical Faculty in Bor, Serbia, was aimed on two main goals. The first of them was to gather information and gain experience in the field of speech prediction and speech signal processing, to understand what is of importance when coding and transferring speech signal, and how the classical (linear) speech signal prediction models are created and defined. The second and major goal was to implement the operators (derivatives and integrals) of fractional order in the classical prediction models and to the related signal processing problems, to improve the quality and performance of the models. Two types of mathematical models for the fractional linear prediction, namely one-parameter and two-parameter models, were proposed and analyzed for possible applications in speech, image or video processing. The field of development of methods and tools to define and implement new kind of fractional-order mathematical models with the application on speech prediction and signal processing is aimed on the topics that are under study mainly by the WorkGroup1 (“Fractional calculus and mathematical models”) of the COST Action CA15225, aiming particularly the Task 1.1: “Mathematical methods of fractional order integration and differentiation” and Task 1.3: “Parameter estimation and modelling of real processes and systems”. The preliminary results of the interdisciplinary cooperation between Dr. Tomas Skovranek (the early career investigator) and Dr. Vladimir Despotovic prove, that the collaboration leads to developing innovative approach based on using fractional-order models in the emerging engineering field of signal prediction and signal processing, by combining their scientific and technology knowledge in the joint work. The work (and collaboration) on the topic will continue also after the STMS expecting that the anticipated results will be of a high importance for both, the field of fractional calculus as well as the field of signal processing.


Fractional-order elements based on RC-EDP design technique, (from Czech Republic to Russia)

Within the Short Term Scientific Mission, the main aim was focused on understanding the theory and description of resistive-capacitive elements with distributed parameters (RC-EDP) that show their applicability in fractional order capacitor design. These discrete passive elements are essential in the design of analogue fractional order function blocks without using any current approximation approach. The results reached within this STSM tackle the Task 2.1 ”Synthesis of fractional order elements” and partially contribute to the Deliverable 2.3 ”FO analysis tools” and Deliverable 2.7 ”New FOEs” as the computer aided synthesis and analysis tool and RC-EDP elements featuring fractional-order impedance were discussed as presented in this Scientific Report. The future cooperation with the research group lead by Prof. Ushakov is expected mainly as at Brno University of Technology we run a research project ”Synthesis and Analysis of Fractional-Order Systems Using Non-Conventional Active Elements” funded by the Czech Science Foundation. Using the currently reached results, joint publication will be prepared and submitted to a selected conference.


Fractional-order control systems research with group at TU Delft, (from Czech Republic to Netherlands)

The main purpose of the Short Scientific Mission (referenced as STSM), which took place at hosting institution Delft University of Technology, the Netherlands, was to extend a cooperation between the Department of Telecommunications in Brno, Brno University of Technology, Czech Republic, specifically the team working on the design of fractal-order analogue circuits, and the Department of Precision and Microsystems Engineering in Delft. During the STSM, especially the possibilities of contribution to the tasks of working group WG4 of this COST action – Utilization of fractional-order systems in engineering and biomedical research areas – were discussed. the team in Brno could contribute to the work of engineers at TU Delft, who among other projects are interested in fractional-order control systems, with their knowledge in electrical engineering field, more specifically with designing analogue fractal-order filters, which might enhance the precision of the control systems designed at TU Delft. This analogue design task contributes to the works under COST Action CA15225 Fractional-order systems; analysis, synthesis and their importance for future design. Further collaboration between the Brno and Delft team in the design of physical fractional controller meeting strict precision requirements has been agreed, whereas this system may be documented in a paper, or a patent and may be offered to the industry.


Fractional–order systems’ synthesis and analysis, (from Czech Republic to Greece)

During of the my STSM within COST Action CA15225 were gained experiences and knowledge about the synthesis of fractional–order elements and approximation methods. The possibilities of propose of the fractional–order systems and their applications were investigated with research group from host university. The low–pass filter structure which contains the fractional–order element was synthesised and analysed during the my visit at University of Patras under the supervision of Prof. Costas Psychalinos. The circuits design was performed in the development environment of microelectronics systems – Cadence (Virtuoso) version 6. The designing of the fractional–order systems, their mathematical description and practical application are possible areas for future cooperation. The results of this report address the tasks from the WG2 of the COST Action CA15225 and will be used for a joint conference paper.


Modeling of fractional-order elements based on fractional calculus and applications in analog circuits, (from Czech Republic to Greece)

The applications of the fractional-order systems are the main focus of the researchers over last decade, but still there are many missing points such as the modeling of fractional-order elements based on fractional calculus, applications in analog circuits or other close topics. The Continued Fraction Expansion (CFE) and Oustaloup approximation methods were discussed, the developed MATLAB code was studied in details. The activitites were mainly focused on the study of fractional-order oscillators based on fundamental analog-building blocks. The theoretical study and simulation results were performed using MATLAB and Cadence v6 programs. The reached results tackle the objectives and expected outputs of the COST Action related to the WG3. As themost recent result of this STSM is a conference paper submitted to 2017 40th International Conference on Telecommunications and Signal Processing (TSP). However, the study on fractional-order oscillators is not completed yet and, Therefore, the collaboration is expected to continue.