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<span class="CEURVOLNR">Vol-2933</span> <br>
<span class="CEURURN">urn:nbn:de:0074-2933-9</span>
<p class="unobtrusive copyright" style="text-align: justify">Copyright &copy; 2021 for 
the individual papers by the papers' authors. 
Copyright &copy; <span class="CEURPUBYEAR">2021</span> for the volume
as a collection by its editors.
This volume and its papers are published under the
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<A HREF="https://creativecommons.org/licenses/by/4.0/">(<span class="CEURLIC">CC BY 4.0</span>)</A>.</p>
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<h1><a href="http://isgt.fmi.uni-sofia.bg"><span class="CEURVOLACRONYM">ISGT 2021</span></a><br>
<span class="CEURVOLTITLE">Information Systems and Grid Technologies</span></h1>
<br>

<h3>
<span class="CEURFULLTITLE">Proceedings of the Information Systems and Grid Technologies</span><br>
<!-- co-located with <span class="CEURCOLOCATED">NONE</span> -->
</h3>
<h3><span class="CEURLOCTIME">ONLINE, May 28 – 29, 2021</span>.</h3> 
<br>
<b> Edited by </b>
<p>
</p>
<h3>
   <a href="http://www.fmi.uni-sofia.bg/bg/faculty/vladimir-todorov-dimitrov"><span class="CEURVOLEDITOR">Vladimir Dimitrov</span></a> *<br>
   <a href="http://www.fmi.uni-sofia.bg/bg/faculty/vasil-georgiev-cunizhev"><span class="CEURVOLEDITOR">Vasil Georgiev</span></a> *<br>

</h3>

* <a href="http://www.uni-sofia.bg">University of Sofia</a>,
  Faculty of Mathematics and Informatics, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria<br>
  <br>

<hr>

<br><br><br>

<div class="CEURTOC">
<h2> Table of Contents </h2>

<ul>
<li id="xpreface">
<A href="preface.pdf">Preface</A>
<span class="CEURPAGES">1-6</span><br>
<span class="CEURAUTHOR">Editors</span>
</li>
</ul>

<ul>

<li id="paper1"><a href="paper1.pdf">
<span class="CEURTITLE">Ethical Design for Trustworthy Solutions: An Introduction to the Course (short paper)</span></a> 
<span class="CEURPAGES">1-8</span> <br>
<span class="CEURAUTHOR">Ioannis Patias</span>, 
<span class="CEURAUTHOR">Vasil Georgiev</span>
</li>

<li id="paper2"><a href="paper2.pdf">
<span class="CEURTITLE">Performing Computer Science Examinations in a Fully Online Environment</span></a> 
<span class="CEURPAGES">9-21</span> <br>
<span class="CEURAUTHOR">Atanas Semerdzhiev</span>, 
<span class="CEURAUTHOR">Dimitar Dimitrov</span>,
<span class="CEURAUTHOR">Nora Angelova</span>,
<span class="CEURAUTHOR">Petar Armyanov</span>,
<span class="CEURAUTHOR">Trifon Trifonov</span>,
<span class="CEURAUTHOR">Kalin Georgiev</span>
</li>

<li id="paper3"><a href="paper3.pdf">
<span class="CEURTITLE">Students' Attitudes toward Personal and Learning Data Usage in Aptitude Project Learner Taxonomy (short paper)</span></a> 
<span class="CEURPAGES">22-30</span> <br>
<span class="CEURAUTHOR">Adelina Aleksieva-Petrova</span>
</li>

<li id="paper4"><a href="paper4.pdf">
<span class="CEURTITLE">iRobot Robots for Education</span></a> 
<span class="CEURPAGES">31-40</span> <br>
<span class="CEURAUTHOR">Vladimir Dimitrov</span>
</li>

<li id="paper5"><a href="paper5.pdf">
<span class="CEURTITLE">Using Open Data for Social Sciences (short paper)</span></a> 
<span class="CEURPAGES">41-49</span> <br>
<span class="CEURAUTHOR">Akio Yoshida</span>
</li>

<li id="paper6"><a href="paper6.pdf">
<span class="CEURTITLE">Optimization of the Process of Adoption of Innovations in the IT Sector: What is the Right Time to Invest in IT Equipment?</span></a> 
<span class="CEURPAGES">50-62</span> <br>
<span class="CEURAUTHOR">George Popov</span>,
<span class="CEURAUTHOR">Antoaneta Popova</span>
</li>

<li id="paper7"><a href="paper7.pdf">
<span class="CEURTITLE">Applications of Unit Tests in Computer Science and Software Engineering Education</span></a> 
<span class="CEURPAGES">63-77</span> <br>
<span class="CEURAUTHOR">Atanas Semerdzhiev</span>,
<span class="CEURAUTHOR">Petar Armyanov</span>,
<span class="CEURAUTHOR">Trifon Trifonov</span>,
<span class="CEURAUTHOR">Kalin Georgiev</span>
</li>

<li id="paper8"><a href="paper8.pdf">
<span class="CEURTITLE">On the Efficient Parallel Computing of Long Term Reliable Trajectories for the Lorenz System</span></a> 
<span class="CEURPAGES">78-88</span> <br>
<span class="CEURAUTHOR">Ivan Hristov</span>, 
<span class="CEURAUTHOR">Radoslava Hristova</span>,
<span class="CEURAUTHOR">Stefka Dimova</span>,
<span class="CEURAUTHOR">Peter Armyanov</span>,
<span class="CEURAUTHOR">Nikolay Shegunov</span>,
<span class="CEURAUTHOR">Igor Puzynin</span>,
<span class="CEURAUTHOR">Taisia Puzynina</span>,
<span class="CEURAUTHOR">Zarif Sharipov</span>,
<span class="CEURAUTHOR">Zafar Tukhliev</span>
</li>

<li id="paper9"><a href="paper9.pdf">
<span class="CEURTITLE">Testing Robotic Systems: Case Study (short paper)</span></a> 
<span class="CEURPAGES">89-96</span> <br>
<span class="CEURAUTHOR">Nikola Totev</span>
</li>

<li id="paper10"><a href="paper10.pdf">
<span class="CEURTITLE">Introducing Software Quality Maturity Models in Software Engineering Education and Small Organizations</span></a> 
<span class="CEURPAGES">97-113</span> <br>
<span class="CEURAUTHOR">George Sharkov</span>,
<span class="CEURAUTHOR">Maya Stoeva</span>
</li>

<li id="paper11"><a href="paper11.pdf">
<span class="CEURTITLE">Marketing Case: Effect of Advertising and Quality of the Goods on the Amount of Sales (short paper)</span></a> 
<span class="CEURPAGES">114-121</span> <br>
<span class="CEURAUTHOR">George Popov</span>,
<span class="CEURAUTHOR">Antoaneta Popova</span>
</li>

<li id="paper12"><a href="paper12.pdf">
<span class="CEURTITLE">Comparison of the Effectiveness of Various Algorithms on a Recommendation System (short paper)</span></a> 
<span class="CEURPAGES">122-130</span> <br>
<span class="CEURAUTHOR">Gulnara Bektemyssova</span>,
<span class="CEURAUTHOR">Yerassyl Akhmer</span>
</li>

<li id="paper13"><a href="paper13.pdf">
<span class="CEURTITLE">Medical Students’ Views on M-Health Applications and Devices (short paper)</span></a> 
<span class="CEURPAGES">131-137</span> <br>
<span class="CEURAUTHOR">Nikoleta Leventi</span>, 
<span class="CEURAUTHOR">Alexandrina Vodenitcharova</span>,
<span class="CEURAUTHOR">Kristina Popova</span>,
<span class="CEURAUTHOR">Antoniya Yanakieva</span>
</li>

<li id="paper14"><a href="paper14.pdf">
<span class="CEURTITLE">Medical Causation in Defining Emotions (short paper)</span></a> 
<span class="CEURPAGES">138-143</span> <br>
<span class="CEURAUTHOR">Gulnara Bektemyssova</span>,
<span class="CEURAUTHOR">Aidos Sabdemov</span> 
</li>

<li id="paper15"><a href="paper15.pdf">
<span class="CEURTITLE">Implementation of an Ontology-Based Decision Support System for Dietary Recommendations for Diabetes Mellitus</span></a> 
<span class="CEURPAGES">144-154</span> <br>
<span class="CEURAUTHOR">Maria Nisheva-Pavlova</span>,
<span class="CEURAUTHOR">Stoyan Hadzhiyski</span>,
<span class="CEURAUTHOR">Iliyan Mihaylov</span>,
<span class="CEURAUTHOR">Dimitar Vassilev</span> 
</li>

<li id="paper16"><a href="paper16.pdf">
<span class="CEURTITLE">Addressing Data Quality in Healthcare (short paper)</span></a> 
<span class="CEURPAGES">155-164</span> <br>
<span class="CEURAUTHOR">Kalinka Kaloyanova</span>, 
<span class="CEURAUTHOR">Ina Naydenova</span>,
<span class="CEURAUTHOR">Zlatinka Kovacheva</span>
</li>

<li id="paper17"><a href="paper17.pdf">
<span class="CEURTITLE">Cross4all Project Model of Integration of Healthcare Data Using the Concepts of EHR and PHR in the Era of IoT</span></a> 
<span class="CEURPAGES">165-177</span> <br>
<span class="CEURAUTHOR">Andrijana Bocevska</span>,
<span class="CEURAUTHOR">Snezana Savoska</span>,
<span class="CEURAUTHOR">Blagoj Ristevski</span>,
<span class="CEURAUTHOR">Natasha Blazheska-Tabakovska</span>,
<span class="CEURAUTHOR">Ilija Jolevski</span>,
<span class="CEURAUTHOR">Vladimir Trajkovik</span> 
</li>

<li id="paper18"><a href="paper18.pdf">
<span class="CEURTITLE">Implementation of Cloud-Based Personal Health Record Integrated with IoMT</span></a> 
<span class="CEURPAGES">178-188</span> <br>
<span class="CEURAUTHOR">Natasha Blazheska-Tabakovska</span>,
<span class="CEURAUTHOR">Andrijana Bocevska</span>,
<span class="CEURAUTHOR">Ilija Jolevski</span>,
<span class="CEURAUTHOR">Blagoj Ristevski</span>,
<span class="CEURAUTHOR">Nikolaos Beredimas</span>,
<span class="CEURAUTHOR">Vassilis Kilintzis</span>,
<span class="CEURAUTHOR">Nicos Maglaveras</span>,
<span class="CEURAUTHOR">Snezana Savoska</span> 
</li>

<li id="paper19"><a href="paper19.pdf">
<span class="CEURTITLE">Blockchain in the Logistics of Health Technologies</span></a> 
<span class="CEURPAGES">189-202</span> <br>
<span class="CEURAUTHOR">Svetlin Georgiev</span>, 
<span class="CEURAUTHOR">Stamatios Priftis</span>,
<span class="CEURAUTHOR">Evgeni Grigorov</span>
</li>

<li id="paper20"><a href="paper20.pdf">
<span class="CEURTITLE">Environmental Data as Еxposome and Оpportunity of Combining with Cloud-Based Personal Health Records</span></a> 
<span class="CEURPAGES">203-219</span> <br>
<span class="CEURAUTHOR">Marija Radezova Trifunovska</span>,
<span class="CEURAUTHOR">Ilija Jolevski</span>, 
<span class="CEURAUTHOR">Blagoj Ristevski</span>, 
<span class="CEURAUTHOR">Snezana Savoska</span>
</li>

<li id="paper21"><a href="paper21.pdf">
<span class="CEURTITLE">Using Machine Learning to Predict Bone Mineral Density from Dual-energy X-ray Absorptiometry Images of the Lumbar Spine (short paper)</span></a> 
<span class="CEURPAGES">220-226</span> <br>
<span class="CEURAUTHOR">Nikola Kirilov</span>, 
<span class="CEURAUTHOR">Elena Kirilova</span>,
<span class="CEURAUTHOR">Evgeniy Krastev</span>
</li>

<li id="paper22"><a href="paper22.pdf">
<span class="CEURTITLE">The Right to Erasure and its Implication on AAL Systems (short paper)</span></a> 
<span class="CEURPAGES">227-235</span> <br>
<span class="CEURAUTHOR">Kristin Aleksandrova</span>
</li>

<li id="paper23"><a href="paper23.pdf">
<span class="CEURTITLE">Semantic Interoperability Issues in the Master’s Curriculum in AI at Sofia University (short paper)</span></a> 
<span class="CEURPAGES">236-243</span> <br>
<span class="CEURAUTHOR">Maria Nisheva-Pavlova</span>
</li>

<li id="paper24"><a href="paper24.pdf">
<span class="CEURTITLE">R&D Ecosystems Success Factors</span></a> 
<span class="CEURPAGES">244-255</span> <br>
<span class="CEURAUTHOR">Ioannis Patias</span>, 
<span class="CEURAUTHOR">Vasil Georgiev</span>
</li>

<li id="paper25"><a href="paper25.pdf">
<span class="CEURTITLE">Prototyping Data Management Model and Tasks (short paper)</span></a> 
<span class="CEURPAGES">256-264</span> <br>
<span class="CEURAUTHOR">Kalinka Kaloyanova</span>, 
<span class="CEURAUTHOR">Ioannis Patias</span>,
<span class="CEURAUTHOR">Boris Robev</span>
</li>

<li id="paper26"><a href="paper26.pdf">
<span class="CEURTITLE">Extended Security Analysis of the Zaslavsky Maps Based Pseudorandom Byte Generator (short paper)</span></a> 
<span class="CEURPAGES">265-269</span> <br>
<span class="CEURAUTHOR">Borislav Stoyanov</span>,
<span class="CEURAUTHOR">Tsvetelina Ivanova</span>,
<span class="CEURAUTHOR">Mihaela Todorova</span>,
<span class="CEURAUTHOR">Miroslav Cholakov</span>,
<span class="CEURAUTHOR">Hyudyaim Ahmed</span>
</li>

<li id="paper27"><a href="paper27.pdf">
<span class="CEURTITLE">Supplier Cybersecurity Risk Assessment Methodology</span></a> 
<span class="CEURPAGES">270-281</span> <br>
<span class="CEURAUTHOR">Albena Tzoneva</span>, 
<span class="CEURAUTHOR">Borislav Stoyanov</span>
</li>

<li id="paper28"><a href="paper28.pdf">
<span class="CEURTITLE">Classification of Software Security Tools</span></a> 
<span class="CEURPAGES">282-292</span> <br>
<span class="CEURAUTHOR">Aleksandar Dimov</span>, 
<span class="CEURAUTHOR">Vladimir Dimitrov</span>
</li>

<li id="paper29"><a href="paper29.pdf">
<span class="CEURTITLE">Adapted SANS Cybersecurity Policies for NIST Cybersecurity Framework (short paper)</span></a> 
<span class="CEURPAGES">293-301</span> <br>
<span class="CEURAUTHOR">Vladimir Dimitrov</span>,
<span class="CEURAUTHOR">Kalinka Kaloyanova</span>,  
<span class="CEURAUTHOR">Milen Petrov</span>
</li>

<li id="paper30"><a href="paper30.pdf">
<span class="CEURTITLE">CPE Ontology</span></a> 
<span class="CEURPAGES">302-313</span> <br>
<span class="CEURAUTHOR">Vladimir Dimitrov</span>
</li>

<li id="paper31"><a href="paper31.pdf">
<span class="CEURTITLE">Android Password Managers and Vault Applications: An Investigation on Data Remanence in Main Memory</span></a> 
<span class="CEURPAGES">314-328</span> <br>
<span class="CEURAUTHOR">Peter Sabev</span>, 
<span class="CEURAUTHOR">Milen Petrov</span>
</li>

<li id="paper32"><a href="paper32.pdf">
<span class="CEURTITLE">Hybrid Exercising for Cyber-Resilient Healthcare and Cross-Sector Crisis Response Operability</span></a> 
<span class="CEURPAGES">329-255</span> <br>
<span class="CEURAUTHOR">George Sharkov</span>,
<span class="CEURAUTHOR">Christina Todorova</span>, 
<span class="CEURAUTHOR">Georgi Koykov</span>,  
<span class="CEURAUTHOR">Georgi Zahariev</span>
</li>

<li id="paper33"><a href="paper33.pdf">
<span class="CEURTITLE">Building An Ontology For CWE From The Point Of View Of An Architectural Concept (short paper)</span></a> 
<span class="CEURPAGES">352-358</span> <br>
<span class="CEURAUTHOR">Zhanar Sartabanova</span>,
<span class="CEURAUTHOR">Vladimir Dimitrov</span>, 
<span class="CEURAUTHOR">Saule Sarsimbaeva</span>,  
<span class="CEURAUTHOR">Gulmira Urdabayeva</span>
</li>

<li id="paper34"><a href="paper34.pdf">
<span class="CEURTITLE">CPE Ontology Generator (short paper)</span></a> 
<span class="CEURPAGES">359-366</span> <br>
<span class="CEURAUTHOR">Vladimir Dimitrov</span>
</li>

</ul>


</div>


<hr>
<span class="unobtrusive">
2021-08-08: submitted by Vladimir Dimitrov, 
            metadata incl. bibliographic data published under <A HREF="https://creativecommons.org/publicdomain/zero/1.0/">Creative Commons CC0</A><br>
<span class="CEURPUBDATE">2021-08-19</span>: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073)
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