Content of Issue 1
 DOI: 10.3217/jucs-021-01
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| Learning Analytics | 
M. Ebner,  Kinshuk, D. Wohlhart, B. Taraghi, V. Kumar | 
1 | 
 
| The Procrastination Related Indicators in e-Learning Platforms | 
M. del Puerto Paule-Ruiz, M. Riestra-Gonzalez, M. Sánchez-Santillan, J.R. Pérez-Pérez | 
7 | 
 
| Dropout Prediction and Reduction in Distance Education Courses with the Learning Analytics Multitrail Approach | 
W. Cambruzzi, S.J. Rigo, J.L.V. Barbosa | 
23 | 
 
| Learning Analytics for the Academic:  An Action Perspective | 
A. Dix, J. Leavesley | 
48 | 
 
| Learning Analytics at "Small" Scale:  Exploring a Complexity-Grounded Model for Assessment Automation | 
S. Goggins, W. Xing, X. Chen, B. Chen, B. Wadholm | 
66 | 
 
| Towards a Learning-Aware Application Guided by Hierarchical Classification of Learner Profiles | 
B. Taraghi, A. Saranti, M. Ebner, V. Müller, A. Großmann | 
93 | 
 
| Development of the Learning Analytics Dashboard to Support Students' Learning Performance | 
Y. Park, I.-H. Jo | 
110 | 
 
| A Visual Analytics Method for Score Estimation in Learning Courses | 
L. de-la-Fuente-Valentín, A. Pardo, F. López Hernández, D. Burgos | 
134 | 
 
| Learning Analytics for English Language Teaching | 
H. Volk, K. Kellner, D. Wohlhart | 
156 | 
 
 
Content of Issue 2
 DOI: 10.3217/jucs-021-02
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| Managing Editor's Column | 
C. Gütl | 
175 | 
 
| Safe Motor Controller in a Mixed-Critical Environment with Runtime Updating Capabilities | 
J.L. Gutiérrez-Rivas, S. Holmbacka, M. Míndez-Macías, W. Lund, S. Lafond, J. Lilius, J. Díaz-Alonso | 
177 | 
 
| Flexible Provisioning Adult Learners | 
H. Hermans, J. Janssen, H. Vogten, R. Koper | 
206 | 
 
| Leveraging Hybrid Recommenders with Multifaceted Implicit Feedback | 
M.G. Manzato, E.B. Santos Junior, R. Goularte | 
223 | 
 
| Public Services Provided with ICT in the Smart City Environment: The Case of Spanish Cities | 
D. Pérez-González, R. Díaz-Díaz | 
248 | 
 
| An Anonymization Algorithm for (α, β, γ, δ)-Social Network Privacy Considering Data Utility | 
M. Rajaei, M.S. Haghjoo, E.K. Miyaneh | 
268 | 
 
| A Recommender System for Non-traditional Educational Resources: A Semantic Approach | 
A. Cañas Rodriguez, J.M. Santos Gago, L.E. Anido Rifón, R. Pérez Rodríguez | 
306 | 
 
| A Review of Linked Data Proposals in the Learning Domain | 
G. Vega-Gorgojo, J.I. Asensio-Pérez, E. Gómez-Sánchez, M.L. Bote-Lorenzo, J.A. Munoz-Cristobal, A. Ruiz-Calleja | 
326 | 
 
 
Content of Issue 3
 DOI: 10.3217/jucs-021-03
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| Recent Advances in Security and Privacy in Big Data | 
Y. Yu, Y. Mu, G. Ateniese | 
365 | 
 
| Polymorphic Malicious JavaScript Code Detection for APT Attack Defence | 
J. Choi, C. Choi, I. You, P. Kim | 
369 | 
 
| A Resolving Set based Algorithm for Fault Identification in Wireless Mesh Networks | 
X. Wang, L. Xu, S. Zhou, J.K. Liu | 
384 | 
 
| On the Security of a User Equipment Registration Procedure in Femtocell-Enabled Networks | 
C.-M. Chen, T.-Y. Wu, R. Tso, M. Mambo, M.-E. Wu | 
406 | 
 
| Restricted Identification Secure in the Extended Canetti-Krawczyk Model | 
L. Hanzlik, M. Kutyłowski | 
419 | 
 
| Searchable Public-Key Encryption with Data Sharing in Dynamic Groups for Mobile Cloud Storage | 
Q. Xia, J. Ni, A.J.B.A. Kanpogninge, J.C. Gee | 
440 | 
 
| An Improved Cloud Data Sharing Scheme with Hierarchical Attribute Structure | 
Z. Liu, H. Yan, Z. Lin, L. Xu | 
454 | 
 
| Insecurity of an Efficient Privacy-preserving Public Auditing Scheme for Cloud Data Storage | 
H. Liu, L. Chen, Z. Davar, M.R. Pour | 
473 | 
 
| Multi-Authority Attribute-Based Encryption Scheme from Lattices | 
G. Zhang, J. Qin, S. Qazi | 
483 | 
 
 
Content of Issue 4
 DOI: 10.3217/jucs-021-04
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| Managing Editor's Column | 
C. Gütl | 
502 | 
 
| Heuristic Algorithms for Manufacturing and Replacement Strategies of the Production System | 
R. Bucki, B. Chramcov, P. Suchánek | 
503 | 
 
| RITA: a useR Interface evaluaTion frAmework | 
S. Charfi, H. Ezzedine, C. Kolski | 
526 | 
 
| Sentiment and Behaviour Annotation in a Corpus of Dialogue Summaries | 
N. Trevisan Roman, P. Piwek, A.M. Brito Rizzoni Carvalho, A. Rossi Alvares | 
561 | 
 
| Point Density Evaluation of Airborne LiDAR Datasets | 
B. Rupnik, D. Mongus, B. Žalik | 
587 | 
 
| From Terminology Extraction to Terminology Validation:An Approach Adapted to Log Files | 
H. Saneifar, S. Bonniol, P. Poncelet, M. Roche | 
604 | 
 
 
Content of Issue 5
 DOI: 10.3217/jucs-021-05
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| Massive Open Online Courses: Combining Methodologies and Architecture for a Success Learning | 
R. Hernández Rizzardini, F.J. García-Peñalvo, C. Delgado Kloos | 
636 | 
 
| Detection and Evaluation of Emotions in Massive Open Online Courses | 
D. Leony, P.J. Muñoz-Merino, J.A. Ruipérez-Valiente, A. Pardo, C. Delgado Kloos | 
638 | 
 
| Cloud Interoperability Service Architecture for Education Environments | 
R. Hernández Rizzardini | 
656 | 
 
| Seeking Open Educational Resources to Compose Massive Open Online Courses in Engineering Education  An Approach based on Linked Open Data | 
N. Piedra, J. Chicaiza, J. López, E. Tovar | 
679 | 
 
| Methodological Approach and Technological Framework to Break the Current Limitations of MOOC Model | 
Á. Fidalgo-Blanco, M.L. Sein-Echaluce, F.J. García-Peñalvo | 
712 | 
 
| MyLearningMentor: A Mobile App to Support Learners Participating in MOOCs | 
C. Alario-Hoyos, I. Estévez-Ayres, M. Pérez Sanagustín, D. Leony, C. Delgado Kloos | 
735 | 
 
 
Content of Issue 6
 DOI: 10.3217/jucs-021-06
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| Intelligent Distributed Processing Methods for Big Data | 
J.J. Jung, D. Camacho, C. Bădică | 
754 | 
 
| Design and Implementation of an Extended Corporate CRMDatabase System with Big Data Analytical Functionalities | 
A.I. Torre-Bastida, E. Villar-Rodriguez, S. Gil-Lopez, J. Del Ser | 
757 | 
 
| Modelling and Linking Accessibility Data in the Public Bus Network | 
P. Cáceres, A. Sierra-Alonso, C.E. Cuesta, B. Vela, J.M. Cavero | 
777 | 
 
| CoCharNet: Extracting Social Networks using Character Co-occurrence in Movies | 
Q.D. Tran, J.E. Jung | 
796 | 
 
| Towards Efficient Locality Aware Parallel Data Stream Processing | 
Z. Falt, M. Kruliš, D. Bednárek, J. Yaghob, F. Zavoral | 
816 | 
 
| Discrete Neighborhood Representations and Modified Stacked Generalization Methods for Distributed Regression | 
H. Allende-Cid, H. Allende, R. Monge, C. Moraga | 
842 | 
 
| Video Semantic Analysis Framework based on Run-time Production Rules - Towards Cognitive Vision | 
A. Zambrano, C. Toro, M. Nieto, R. Sotaquira, C. Sanín, E. Szczerbicki | 
856 | 
 
| Similarity-based Complex Publication Network Analytics for Recommending Potential Collaborations | 
N.T. Luong, T.T. Nguyen, D. Hwang, C.H. Lee, J.J. Jung | 
871 | 
 
 
Content of Issue 7
 DOI: 10.3217/jucs-021-07
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| Managing Editor's Column | 
C. Gütl | 
890 | 
 
| Naive Infinite Enumeration of Context-free Languages in Incremental Polynomial Time | 
C.C. Florêncio, J. Daenen, J. Ramon, J. Van den Bussche, D. Van Dyck | 
891 | 
 
| A Model of Affect and Learning for Intelligent Tutors | 
Y. Hernández, G. Arroyo-Figueroa, L.E. Sucar | 
912 | 
 
| Non-Photorealistic Rendering of Neural Cells from their Morphological Description | 
A. Mendoza, S. Mata, L. Pastor | 
935 | 
 
| Assessing Learning Achievements when Reducing Mobile Video Quality | 
A. Molnar, C. Hava Muntean | 
959 | 
 
| Tracking Data in Open Learning Environments | 
J.L. Santos, K. Verbert, J. Klerkx, E. Duval, S. Charleer, S. Ternier | 
976 | 
 
 
Content of Issue 8
 DOI: 10.3217/jucs-021-08
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| Aligned, Embedded and Scalable  Assessment Technologies | 
D. Hernández-Leo, L. Vicent Safont | 
997 | 
 
| Introducing a Formative E-Assessment System to Improve Online Learning Experience and Performance | 
E. Hettiarachchi, E. Mor, M.A. Huertas, A.-E. Guerrero-Roldán | 
1001 | 
 
| Helping Teachers Align Learning Objectives and Evidence: Integration of ePortfolios in Distributed Learning Environments | 
A. Lozano-Alvarez, J.I. Asensio-Pérez, G. Vega-Gorgojo, A. Martínez-Monés | 
1022 | 
 
| Interoperability Framework for Competences and  Learning Outcomes | 
M.J.A. Gonçalves, Á. Rocha, M. Pérez Cota | 
1042 | 
 
| A Context-aware Approach for Personalized Mobile Self-Assessment | 
A. Harchay, L. Cheniti-Belcadhi, R. Braham | 
1061 | 
 
| Virtual Learning Scenarios for Qualitative Assessment in Higher Education 3D Arts | 
L. Vicent Safont, S. Villagrasa, D. Fonseca, E. Redondo | 
1086 | 
 
 
Content of Issue 10
 DOI: 10.3217/jucs-021-10
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| Mobile Technology for Foreign Language Teaching:Building Bridges between Non-formal and Formal Scenarios | 
J. Traxler, E. Barcena, J. García Laborda | 
1234 | 
 
| A Proposal for an Integrated Evaluation Framework for Mobile Language Learning: Lessons Learned from SIMOLA - Situated Mobile Language Learning | 
A. Cacchione, E. Procter-Legg, S. Abbas Petersen, M. Winter | 
1248 | 
 
| The Mobile Language Learner - Use of Technology in Language Learning | 
L. Bradley | 
1269 | 
 
| Determination of Turkish University Students' Attitudes for Mobile Integrated EFL Classrooms in North Cyprus and Scale Development: ELLMTAS | 
H. Uzunboylu, Ç. Hürsen, G. Özütürk, M. Demirok | 
1283 | 
 
| The Role of Social Learning Networks in Mobile Assisted Language Learning: Edmodo as a Case Study | 
H. Bicen | 
1297 | 
 
| MLab: A Mobile Language Learning Lab System for Language Learners | 
H.M. Alotaibi, R.A. Alamer, H.S. Al-Khalifa | 
1307 | 
 
| The Role of a Mobile App for Listening Comprehension Training in Distance Learning to Sustain Student Motivation | 
T. Read, A. Kukulska-Hulme | 
1327 | 
 
Profiling a MALL App for English Oral Practice  A Case Study | 
A. Ibáñez Moreno, A. Vermeulen | 
1339 | 
 
| Language Learning through Handheld Gaming: a Case Study of an English Course with Engineering Students | 
M. Rico, J.E. Agudo, H. Sánchez | 
1362 | 
 
 
Content of Issue 11
 DOI: 10.3217/jucs-021-11
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| Enabling Technologies and Business Infrastructures for Next Generation Social Media:Big Data, Cloud Computing, Internet of Things and Virtual Reality | 
M.D. Lytras, W. Al-Halabi, J.X. Zhang, M. Masud, R.A. Haraty | 
1379 | 
 
| A Competence-based View on the Global Software Development Process | 
P. Holtkamp, J.M. Pawlowski | 
1385 | 
 
| SKYWare: The Unavoidable Convergence of Software towards Runnable Knowledge | 
I. Exman, J. Llorens, A. Fraga, J.M. Alvarez-Rodríguez | 
1405 | 
 
| Exploring the Impacts of Social Networking on Brand Image and Purchase Intention in Cyberspace | 
H.-W. Wang, Y.-C.J. Wu, T.-P. Dong | 
1425 | 
 
| Synchronizing Data through Update Queries in Interoperable E-Health and Technology Enhanced Learning Data Sharing Systems | 
M. Masud, M.S. Hossain, A. Alamri, A. Almogren, M. Zakariah | 
1439 | 
 
| PSO-Based Feature Selection for Arabic Text Summarization | 
A.M. Al-Zahrani, H. Mathkour, H. Abdalla | 
1454 | 
 
| Analyzing the Multicriteria of the Interaction Design of an Educational Map Application for Digital TV from User Preferences | 
D. Almeida Chagas, E. Sucupira Furtado, C. Loiola Brito Maia, P. Rogerio Pinheiro | 
1470 | 
 
| A Framework for Extraction of Relations from Text using Relational Learning and Similarity Measures | 
M. Vargas-Vera | 
1482 | 
 
| A Visual Representation of Online Interaction Patterns | 
M. Lucas, A. Moreira | 
1496 | 
 
| DWCMM: The Data Warehouse Capability Maturity Model | 
M. Spruit, C. Sacu | 
1508 | 
 
 
Content of Issue 12
 DOI: 10.3217/jucs-021-12
 | 
 
| Managing Editor's Column | 
C. Gütl | 
1535 | 
 
| On Real-valued Visual Cryptographic Basis Matrices | 
N. Buckley, A.K. Nagar, S. Arumugam | 
1536 | 
 
| Deterministic Frequency Pushdown Automata | 
C.S. Calude, R. Freivalds, S. Jain, F. Stephan | 
1563 | 
 
| Conceptual Evaluation of Massive Open Online Courses through Pathfinder Associative Networks | 
R. Gil Ortego, J.A. Gil Pascual | 
1577 | 
 
| Extending Mobile Cloud Platforms Using Opportunistic Networks: Survey, Classification and Open Issues | 
S. Pal | 
1594 | 
 
| UNITE: Enhancing Students' Self-efficacy through the Use of a 3D Virtual World | 
J. Scullion, G. Baxter, M. Stansfield | 
1635 | 
 
| A Joint Development of Coloured Petri Nets and the B Method in Critical Systems | 
P. Sun, P. Bon, S. Collart-Dutilleul | 
1654 | 
 
| Creativity in Mind: Evaluating and Maintaining Advances in Network Steganographic Research | 
S. Wendzel, C. Palmer | 
1684 | 
 
 
Content of Issue 13
 DOI: 10.3217/jucs-021-13
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| Information Retrieval and Recommender Systems | 
F. Cacheda, J. Parapar | 
1706 | 
 
| Cross-Language Source Code Re-Use Detection Using Latent Semantic Analysis | 
E. Flores, A. Barrón-Cedeño, L. Moreno, P. Rosso | 
1708 | 
 
| Learning to Choose the Best System Configuration in Information Retrieval: the Case of Repeated Queries | 
A. Bigot, S. Déjean, J. Mothe | 
1726 | 
 
| An Interactive Design Pattern Selection Method | 
N. Bouassida, S. Jamoussi, A. Msaed, H. Ben-Abdallah | 
1746 | 
 
| Statistical Analysis to Establish the Importance of Information Retrieval Parameters | 
J. Ayter, A.-G. Chifu, S. Déjean, C. Desclaux, J. Mothe | 
1767 | 
 
| Queuing Theory-based Latency/Power Tradeoff Models for Replicated Search Engines | 
A. Freire, C. Macdonald, N. Tonellotto, I. Ounis, F. Cacheda | 
1790 | 
 
| A Distributed Recommendation Platform for Big Data | 
D. Valcarce, J. Parapar, Á. Barreiro | 
1810 | 
 
| Content-based Information Retrieval by Named Entity Recognition and Verb Semantic Role Labelling | 
B. Antony J, G.S. Mahalakshmi | 
1830 | 
 
| Evaluating the Relative Performance of Collaborative Filtering Recommender Systems | 
H.J. Corona Pampín, H. Jerbi, M.P. O'Mahony | 
1849 | 
 
 
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