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Volume 21

Content of Issue 1
DOI: 10.3217/jucs-021-01
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
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
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
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
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
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
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
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 9
DOI: 10.3217/jucs-021-09
Managing Editor's Column C. Gütl 1106
A Conceptual Framework to Define Incentive Mechanisms for Virtual Communities J. de Melo Bezerra, C. Massaki Hirata, D. Randall 1107
A Note on Variable-Length Codes with Constant Hamming Weights P. Fenwick 1136
An Adaptive Metaheuristic for Vehicle Routing Problems with Time Windows and Multiple Service Workers G. Senarclens de Grancy 1143
Adaptive Courseware: A Literature Review A. Grubišić, S. Stankov, B. Žitko 1168
Clock-Skew-Based Computer Identification: Traps and Pitfalls L. Polčák, B. Franková 1210
Content of Issue 10
DOI: 10.3217/jucs-021-10
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
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
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