Dynamic reliability management: Reconfiguring reliability-levels of hardware designs at runtime
J. Anwer, S. Meisner, M. Platzner, in: Reconfigurable Computing and FPGAs (ReConFig), 2013 International Conference On, 2013, pp. 1–6.

Beschleunigung von Tiefenberechnung aus Stereobildern durch FPGA-basierte Datenflussrechner
C. Bick, Beschleunigung von Tiefenberechnung Aus Stereobildern Durch FPGA-Basierte Datenflussrechner, Paderborn University, 2013.

Improving transient state myoelectric signal recognition in hand movement classification using gyroscopes
A. Boschmann, B. Nofen, M. Platzner, in: Proc. IEEE Int. Conf. Eng. Med. Biolog. (EMBC), 2013.

Reducing the limb position effect in pattern recognition based myoelectric control using a high density electrode array
A. Boschmann, M. Platzner, in: Proc. IEEE ISSNIP Biosignals and Biorobotics Conference (BRC), 2013.

Investigating Evolvable Hardware Classification for the BioSleeve Electromyographic Interface
K. Glette, P. Kaufmann, C. Assad, M. Wolf, in: IEEE Intl. Conf. on Evolvable Systems (ICES), Springer, 2013, pp. 1–1.

Adapting Hardware Systems by Means of Multi-Objective Evolution
P. Kaufmann, Adapting Hardware Systems by Means of Multi-Objective Evolution, Logos Verlag, Berlin, 2013.

Classification of Electromyographic Signals: Comparing Evolvable Hardware to Conventional Classifiers
P. Kaufmann, K. Glette, T. Gruber, M. Platzner, J. Torresen, B. Sick, IEEE Transactions on Evolutionary Computation 17 (2013) 46–63.

Behavior Models for Electric Vehicles
M. Knoop, Behavior Models for Electric Vehicles, IWES Kassel, 2013.

Verbesserung der Erkennungsrate eines Systems zur Klassifikation von EMG-Signalen durch den Einsatz eines hybriden Lagesensors
B. Nofen, Verbesserung Der Erkennungsrate Eines Systems Zur Klassifikation von EMG-Signalen Durch Den Einsatz Eines Hybriden Lagesensors, Paderborn University, 2013.

Überquerung der Styx - Betriebsparametervariation und Fehlerverhalten eines Platform FPGAs
D. Pudelko, Überquerung Der Styx - Betriebsparametervariation Und Fehlerverhalten Eines Platform FPGAs, Paderborn University, 2013.

Identifikation und Wiederherstellung von kryptographischen Schlüsseln mit FPGAs
H. Riebler, Identifikation Und Wiederherstellung von Kryptographischen Schlüsseln Mit FPGAs, Paderborn University, 2013.

MiBenchHybrid : Erweiterung eines Benchmarks um Hardwarebeschleunigung
A. Sprenger, MiBenchHybridf: Erweiterung Eines Benchmarks Um Hardwarebeschleunigung, Paderborn University, 2013.

Beschleunigung von Einzelbild-Erkennungsverfahren auf Datenfluss basierenden HPC Systemen
P. Steppeler, Beschleunigung von Einzelbild-Erkennungsverfahren Auf Datenfluss Basierenden HPC Systemen, Paderborn University, 2013.

Real-Time Simulation of Distribution Grids with high Penetration of Regenerative and Distributed Generation
C. Toebermann, D. Geibel, M. Hau, R. Brandl, P. Kaufmann, C. Ma, M. Braun, T. Degner, in: Real-Time Conference, OPAL RT Paris, 2013.

A fast TCAD-based methodology for Variation analysis of emerging nano-devices
H. Ghasemzadeh Mohammadi, P.-E. Gaillardon, M. Yazdani, G. De Micheli, in: 2013 IEEE International Symposium on Defect and Fault Tolerance in VLSI and Nanotechnology Systems (DFTS), IEEE, 2013, pp. 83–88.

Vertically-stacked silicon nanowire transistors with controllable polarity: A robustness study
P.-E. Gaillardon, H. Ghasemzadeh Mohammadi, G. De Micheli, in: 2013 14th Latin American Test Workshop-LATW, IEEE, 2013, pp. 1–6.

Schema-based Parallel Compression and Decompression of XML Data
S. Böttcher, M. Feldotto, R. Hartel, in: WEBIST 2013 - Proceedings of the 9th International Conference on Web Information Systems and Technologies, Aachen, Germany, 8-10 May, 2013, 2013, pp. 77–86.

GMM-based significance decoding
A.H. Abdelaziz, S. Zeiler, D. Kolossa, V. Leutnant, R. Haeb-Umbach, in: Acoustics, Speech and Signal Processing (ICASSP), 2013 IEEE International Conference On, 2013, pp. 6827–6831.

MAP-based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations
A. Chinaev, R. Haeb-Umbach, in: 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 2013, pp. 3352–3356.

Improved Single-Channel Nonstationary Noise Tracking by an Optimized MAP-based Postprocessor
A. Chinaev, R. Haeb-Umbach, J. Taghia, R. Martin, in: 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 2013, pp. 7477–7481.

On the Acoustic Channel Identification in Multi-Microphone Systems via Adaptive Blind Signal Enhancement Techniques
G. Enzner, D. Schmid, R. Haeb-Umbach, in: 21th European Signal Processing Conference (EUSIPCO 2013), 2013.

Unsupervised Word Segmentation from Noisy Input
J. Heymann, O. Walter, R. Haeb-Umbach, B. Raj, in: Automatic Speech Recognition and Understanding Workshop (ASRU 2013), 2013.

Parameter estimation and classification of censored Gaussian data with application to WiFi indoor positioning
M.K. Hoang, R. Haeb-Umbach, in: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 3721–3725.

The reverb challenge: a common evaluation framework for dereverberation and recognition of reverberant speech
K. Kinoshita, M. Delcroix, T. Yoshioka, T. Nakatani, E. Habets, R. Haeb-Umbach, V. Leutnant, A. Sehr, W. Kellermann, R. Maas, S. Gannot, B. Raj, in:  IEEE Workshop on Applications of Signal Processing to Audio and Acoustics , 2013, pp. 22–23.

Bayesian Feature Enhancement for Reverberation and Noise Robust Speech Recognition
V. Leutnant, A. Krueger, R. Haeb-Umbach, IEEE Transactions on Audio, Speech, and Language Processing 21 (2013) 1640–1652.

Blind Speech Separation Exploiting Temporal and Spectral Correlations Using Turbo Decoding of 2D-HMMs
D.H. Tran Vu, R. Haeb-Umbach, in: 21th European Signal Processing Conference (EUSIPCO 2013), 2013.

Using the turbo principle for exploiting temporal and spectral correlations in speech presence probability estimation
D.H.T. Vu, R. Haeb-Umbach, in: 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 2013, pp. 863–867.

Unsupervised Word Discovery from Phonetic Input Using Nested Pitman-Yor Language Modeling
O. Walter, R. Haeb-Umbach, S. Chaudhuri, B. Raj, in: IEEE International Conference on Robotics and Automation (ICRA 2013), 2013.

Hierarchical System for Word Discovery Exploiting DTW-Based Initialization
O. Walter, T. Korthals, R. Haeb-Umbach, B. Raj, in: Automatic Speech Recognition and Understanding Workshop (ASRU 2013), 2013.

A Novel Initialization Method for Unsupervised Learning of Acoustic Patterns in Speech (FGNT-2013-01)
O. Walter, J. Schmalenstroeer, R. Haeb-Umbach, A Novel Initialization Method for Unsupervised Learning of Acoustic Patterns in Speech (FGNT-2013-01), 2013.

Decoding IEEE 802.11a/g/p OFDM in software using GNU radio
B. Bloessl, M. Segata, C. Sommer, F. Dressler, in: Proceedings of the 19th Annual International Conference on Mobile Computing &; Networking - MobiCom ’13, 2013.

An IEEE 802.11a/g/p OFDM receiver for GNU radio
B. Bloessl, M. Segata, C. Sommer, F. Dressler, in: Proceedings of the Second Workshop on Software Radio Implementation Forum - SRIF ’13, 2013.

To crash or not to crash: Estimating its likelihood and potentials of beacon-based IVC systems
S. Joerer, M. Segata, B. Bloessl, R.L. Cigno, C. Sommer, F. Dressler, in: 2012 IEEE Vehicular Networking Conference (VNC), 2013.

A Vehicular Networking Perspective on Estimating Vehicle Collision Probability at Intersections
S. Joerer, M. Segata, B. Bloessl, R. Lo Cigno, C. Sommer, F. Dressler, IEEE Transactions on Vehicular Technology (2013) 1802–1812.

Use both lanes: Multi-channel beaconing for message dissemination in vehicular networks
F. Klingler, F. Dressler, J. Cao, C. Sommer, in: 2013 10th Annual Conference on Wireless On-Demand Network Systems and Services (WONS), 2013.

Fair and adaptive data dissemination for Traffic Information Systems
R.S. Schwartz, A.E. Ohazulike, C. Sommer, H. Scholten, F. Dressler, P. Havinga, in: 2012 IEEE Vehicular Networking Conference (VNC), 2013.

On the applicability of fair and adaptive data dissemination in traffic information systems
R.S. Schwartz, A.E. Ohazulike, C. Sommer, H. Scholten, F. Dressler, P. Havinga, Ad Hoc Networks (2013) 428–443.

On the applicability of Two-Ray path loss models for vehicular network simulation
C. Sommer, S. Joerer, F. Dressler, in: 2012 IEEE Vehicular Networking Conference (VNC), 2013.

How shadowing hurts vehicular communications and how dynamic beaconing can help
C. Sommer, S. Joerer, M. Segata, O. Tonguz, R.L. Cigno, F. Dressler, in: 2013 Proceedings IEEE INFOCOM, 2013.

IVC in Cities: Signal Attenuation by Buildings and How Parked Cars Can Improve the Situation
C. Sommer, D. Eckhoff, F. Dressler, IEEE Transactions on Mobile Computing (2013) 1733–1745.

Analyzing and Quantifying Fault Tolerance Properties
S. Hellebrand, in: 14th IEEE Latin American Test Workshop - (LATW’13), IEEE, Cordoba, Argentina, 2013.

Helping High Schoolers Move the (Virtual) World
G. Domik, S. Arens, P. Stilow, H. Friedrich, IEEE Computer Graphics and Applications 33 (2013) 70–74.

The use of code reading in teaching programming
T. Busjahn, C. Schulte, in: Koli Calling, ACM, 2013, pp. 3–11.

Object Interaction Competence Model v. 2.0
J. Bennedsen, C. Schulte, in: LaTiCE, IEEE Computer Society, 2013, pp. 9–16.

PCK and reflection in computer science teacher education
M. Buchholz, M. Saeli, C. Schulte, in: WiPSCE, ACM, 2013, pp. 8–16.

Reflections on the role of programming in primary and secondary computing education
C. Schulte, in: WiPSCE, ACM, 2013, pp. 17–24.

Labelwise versus pairwise decomposition in label ranking
W. Cheng, S. Henzgen, E. Hüllermeier, in: In Proceedings Workshop LWA-2009, Lernen-Wissensentdeckung-Adaptivität, Bamberg, Germany, 2013, pp. 129–136.

Rectifying classifier chains for multi-label classification, Bamberg, Germany
R. Senge, J. del Coz, E. Hüllermeier, in: In Proceedings Workshop LWA-2009, Lernen-Wissensentdeckung-Adaptivität, Bamberg, Germany, 2013, pp. 151–158.

Preference-based evolutionary optimization using generalized racing algorithms
R. Busa-Fekete, T. Fober, E. Hüllermeier, in: F. Hoffmann, E. Hüllermeier (Eds.), In Proceedings 23th Workshop Computational Intelligence, Dortmund Germany, KIT Scientific Publishing, 2013, pp. 237–246.

Weighted rank correlation measures based on fuzzy order relations
S. Henzgen, E. Hüllermeier, in: F. Hoffmann, E. Hüllermeier (Eds.), In Proceedings 23th Workshop Computational Intelligence, Dortmund Germany, KIT Scientific Publishing, 2013, pp. 227–236.

Interactive Q-learning with ordinal rewards and unreliable tutor
P. Weng, R. Busa-Fekete, E. Hüllermeier, in: In Proceedings ECML/PKDD-Workshop on Reinforcement Learning from Generalized Feedback:Beyond Numerical Rewards, Prague, 2013.

Preference-based evolutionary direct policy search
R. Busa-Fekete, B. Szörenyi, P. Weng, E. Hüllermeier, in: In Proceedings ECML/PKDD-Workshop on Reinforcement Learning from Generalized Feedback:Beyond Numerical Rewards, Prague, 2013.

A nearest neigbor approach to label ranking based on generalized labelwise loss minimization
W. Cheng, E. Hüllermeier, in: In Proceedings M-PREF, 7th Multidisciplinary Workshop on Advances in Preference Handling Beijing, China, 2013.

Event history analysis on data streams: An application to earthquake occurence
A. Shaker, E. Hüllermeier, in: G. Krempl, I. Zliobaite, Y. Wang, G. Forman (Eds.), In Proceedings RealStream 2013, 1st International Workshop on Real-World Challenges for Data Stream Mining, Prague, Czech Republic, 2013, pp. 38–41.

On the problem of error propagation in classier chains for multi-label classification. Data Analysis, Machine Learning and Knowledge Discovery
R. Senge, J.J. del Coz, E. Hüllermeier, in: L. Schmidt-Thieme, M. Spiliopoulou (Eds.), In Proceedings of GFKL-2012, 36th Annual Conference of the German Classification Society, Studies in Classification, Data Analysis and Knowledge Organization, Hildesheim, Germany , Springer, 2013.

Local clique merging: An extension of the maximum common subgraph measure with applications in structural bioinformatics, Algorithms from and for Nature and Life
T. Fober, G. Klebe, E. Hüllermeier, in: B. Lausen, D. Van den Poel, A. Ultsch (Eds.), In Proceedings GFKL-2011, Conference of the German Classification Society, Frankfurt Germany, Springer, 2013, pp. 279–286.

Formation and control of Turing patterns in a coherent quantum fluid
V. Ardizzone, P. Lewandowski, M.H. Luk, Y.C. Tse, N.H. Kwong, A. Lücke, M. Abbarchi, E. Baudin, E. Galopin, J. Bloch, A. Lemaitre, P.T. Leung, P. Roussignol, R. Binder, J. Tignon, S. Schumacher, Scientific Reports (2013).

Charge Photogeneration in Donor–Acceptor Conjugated Materials: Influence of Excess Excitation Energy and Chain Length
R. Tautz, E. Da Como, C. Wiebeler, G. Soavi, I. Dumsch, N. Fröhlich, G. Grancini, S. Allard, U. Scherf, G. Cerullo, S. Schumacher, J. Feldmann, Journal of the American Chemical Society (2013) 4282–4290.

Transverse optical instability patterns in semiconductor microcavities: Polariton scattering and low-intensity all-optical switching
M.H. Luk, Y.C. Tse, N.H. Kwong, P.T. Leung, P. Lewandowski, R. Binder, S. Schumacher, Physical Review B (2013).

Excited-State Absorption of Conjugated Polymers in the Near-Infrared and Visible: A Computational Study of Oligofluorenes
S. Ling, S. Schumacher, I. Galbraith, M.J. Paterson, The Journal of Physical Chemistry C (2013) 6889–6895.

On the insecurity of XML Security
J. Somorovsky, On the Insecurity of XML Security, 2013.

A New Approach towards DoS Penetration Testing on Web Services
A. Falkenberg, C. Mainka, J. Somorovsky, J. Schwenk, in: 2013 IEEE 20th International Conference on Web Services, 2013.

Penetration test tool for XML-based web services
C. Mainka, V. Mladenov, J. Somorovsky, J. Schwenk, CEUR Workshop Proceedings 965 (2013) 31–35.

One Bad Apple: Backwards Compatibility Attacks on State-of-the-Art Cryptography
T. Jager, K.G. Paterson, J. Somorovsky, in: 20th Annual Network and Distributed System Security Symposium, NDSS 2013, San Diego, California, USA, February 24-27, 2013, 2013.

Der Einfluss von Steuern auf Investitionsentscheidungen bei Unsicherheit
C. Sureth, Der Einfluss von Steuern Auf Investitionsentscheidungen Bei Unsicherheit, Wiesbaden, 2013.

Fast Multi-update Operations on Compressed XML Data
S. Böttcher, R. Hartel, T. Jacobs, in: Big Data - 29th British National Conference on Databases, BNCOD 2013, Springer, Berlin, Heidelberg, 2013, pp. 149–164.

DAG - Index - A Compressed Index for XML Keyword Search
S. Böttcher, M. Brandenburg, R. Hartel, in: WEBIST 2013 - Proceedings of the 9th International Conference on Web Information Systems and Technologies, SciTePress, 2013, pp. 137–140.

Ordinal Choquistic regression 
A. Fallah Tehrani, E. Hüllermeier, in: J. Montero, G. Pasi, D. Ciucci (Eds.), In Proceedings EUSFLAT-2013 8th International Conference on the European Society for Fuzzy Logic and Technology, Milano, Italy, Atlantis Press, 2013.

Fuzzy Pattern Trees as an alternative to rule-based fuzzy systems: Knowledge-driven, data-driven and hybrid modeling of colour yield in poyester dyeing, Edmonton, Canada
N. Nasiri, T. Fober, R. Senge, E. Hüllermeier, in: In Proceedings IFSA-2013 World Congress of the International Fuzzy Systems Association, Edmonton, Canada, 2013, pp. 715–721.

Implementing Efficient Updates in Compressed Big Text Databases
S. Böttcher, A. Bültmann, R. Hartel, J. Schlüßler, in: International Conference on Database and Expert Systems Applications, Springer, 2013, pp. 189–202.

How visualization courses have changed over the past 10 years
G.S. Owen, G. Domik, D.S. Ebert, J. Kohlhammer, H. Rushmeier, B.S. Santos, D. Weiskopf, IEEE Computer Graphics and Applications 33 (2013) 14–19.

Animatronics Workshop: A Theater+ Engineering Collaboration at a High School
J.G. Alford, L. Jacob, P. Dietz, IEEE Computer Graphics and Applications 33 (2013) 9–13.

Visualizing Dissections of the Heart in a Dataflow-based Shader Framework for Volume Rendering
S. Arens, M. Bolte, G. Domik, in: M. Bronstein , J. Favre , K. Hormann (Eds.), Vision, Modeling &; Visualization, The Eurographics Association, 2013.

Highly Anisotropic Steel Processed by Selective Laser Melting
T. Niendorf, S. Leuders, A. Riemer, H.A. Richard, T. Tröster, D. Schwarze, Metallurgical and Materials Transactions B (2013) 794–796.

Stahl-CFK-Strukturen wie Tiefziehteile fertigen
H.C. Schmidt, C. Lauter, MaschinenMarkt Compositesworld (2013) 22–25.

Verhalten von lasergeschmolzenen Bauteilen aus der Titan-Aluminium-Legierung TiAl6 unter zyklischer Beanspruchung
A. Riemer, S. Leuders, H.A. Richard, T. Tröster, Materials Testing (2013) 537–543.

Graded Lightweight Structures Through Hot Forming
T. Marten, H. Block, T. Tröster, T. Gerber, S. Sikora, F.-J. Lenze, in: 2013.

Influences of Automotive Process Characteristics on Hybrid Structures
C. Lauter, T. Hochschulz, M. Frantz, T. Tröster, in: 2013.

Curing of fibre reinforced plastics by resistance heating of sheet metal in a hybrid structure
B. Siewers, C. Lauter, T. Tröster, in: 2013.

Crashworthiness of Hybrid Structures
T. Tröster, C. Lauter, C. Reuter, in: 2013.

Recycling of Automotive Sheet Metal-Fibre Reinforced Plastic-Hybrid Structures
B. Siewers, C. Lauter, T. Tröster, in: 2013.

Manufacturing of Hybrid Structures by Prepreg Press Technology
C. Lauter, T. Krooß, T. Tröster, in: 2013.

Leichtbau mit Hybridstrukturen im Automobil
T. Tröster, C. Lauter, C. Reuter, in: 2013.

On the Fatigue Behavior of TiAl6 Manufactured by Selective Laser Melting– Influence of Process Induced Defects
S. Leuders, A. Riemer, T. Niendorf, H.A. Richard, T. Tröster, in: 2013.

Effizienter Leichtbau durch gradierte Eigenschaften im Presshärteprozess
T. Marten, H. Block, T. Tröster, in: 2013.

Bewertung des Einflusses korrosiver Schädigung auf das Ermüdungsverhalten von CFK/Stahl-Hybridverbindungen
A. Riemer, S. Leuders, H.A. Richard, T. Tröster, in: 2013.

Multilabel classification for exploiting cross-resistance information in HIV-1 drug resistence prediction
D. Heider, R. Senge, W. Cheng, E. Hüllermeier, Bioinformatics 29 (2013) 1946–1952.

Chest pain in primary care: is the localization of pain diagnostically helpful in the critical evaluation of patients? A cross sectional study. 
S. Bösner, K. Bönisch, J. Haasenritter , P. Schlegel, E. Hüllermeier, N. Donner-Banzhoff, BMC Family Practice 14 (2013) 154–162.

Diagnose im Kontext - eine erweiterte Perspektive
J. Haasenritter, A. Viniol, A. Becker, S. Bösner, E. Hüllermeier, R. Senge, N. Donner-Banzhoff, Zeitschrift Für Evidenz, Fortbildung Und Qualität Im Gesundheitswesen (ZEFQ) 107 (2013) 585–591.

Hybrid Structures Consisting of Sheet Metal and Fibre Reinforced Plastics for Structural Automotive Applications
C. Lauter, T. Tröster, C. Reuter, in: Advanced Composite Materials for Automotive Applications, Chichester, UK, 2013.

Direct Observation of Sub-Binomial Light
T. Bartley, G. Donati, X.-M. Jin, A. Datta, M. Barbieri, I.A. Walmsley, Physical Review Letters (2013).

Strategies for enhancing quantum entanglement by local photon subtraction
T. Bartley, P.J.D. Crowley, A. Datta, J. Nunn, L. Zhang, I. Walmsley, Physical Review A (2013).

Requirements for two-source entanglement concentration
M. Vidrighin, T. Bartley, G. Donati, X.-M. Jin, M. Barbieri, W.S. Kolthammer, A. Datta, I.A. Walmsley, Quantum Measurements and Quantum Metrology (2013).

Evolving fuzzy pattern trees for binary classification on data streams
A. Shaker, R. Senge, E. Hüllermeier, Information Sciences 220 (2013) 34–45.

"Ihr betet an, was ihr nicht kennt" (Jo 4, 22) - Eine neue Sicht auf die Trinität 
D. Krimphove, “Ihr Betet an, Was Ihr Nicht Kennt” (Jo 4, 22) - Eine Neue Sicht Auf Die Trinität , Verlag Kovad, Hamburg, 2013.

Kommentar: MaComp Mindestanforderungen an die Compliance-Funktion und die weiteren Verhaltens-, Organisations- und Transparenzpflichten nach §§ 31 ff. WpHG für Wertpapierdienstleistungsunternehmen
D. Krimphove, O. Kruse, Kommentar: MaComp Mindestanforderungen an Die Compliance-Funktion Und Die Weiteren Verhaltens-, Organisations- Und Transparenzpflichten Nach §§ 31 Ff. WpHG Für Wertpapierdienstleistungsunternehmen, Verlag C.H. Beck, München, 2013.

Europarecht inklusive CD-ROM mit Gesetzen, Urteilen, Hörfassung und interaktiven Falllösungen
D. Krimphove, Europarecht Inklusive CD-ROM Mit Gesetzen, Urteilen, Hörfassung Und Interaktiven Falllösungen, 2nd ed., Kohlhammer, Stuttgart , 2013.

Visualization and Collaborative Editing of Simulation Models With Heterogeneous Clients: Implemented Into the Simulator FACT
H. Renken, S. Brandt, F.A. Eichert, A. Klaas, in: Volume 2: 32nd Computers and Information in Engineering Conference, Parts A and B, 2013, pp. 1491–1500.

Use both lanes: Multi-channel beaconing for message dissemination in vehicular networks
F. Klingler, F. Dressler, J. Cao, C. Sommer, in: 2013 10th Annual Conference on Wireless On-Demand Network Systems and Services (WONS), 2013.

Spherical Visibility Sampling
B. Eikel, C. Jähn, M. Fischer, F. Meyer auf der Heide, in: Computer Graphics Forum, 2013, pp. 49–58.