@article{
	11589_61745,
	author = { Boccaccio  Antonio  and  Uva  Antonio Emmanuele  and  Fiorentino  Michele  and  Mori  Giorgio  and  Monno  Giuseppe },
	title = {Geometry Design Optimization of Functionally Graded Scaffolds for Bone Tissue Engineering: A Mechanobiological Approach},
	year = {2016},
	journal = {PLOS ONE},
	volume = {11},
	abstract = {Functionally Graded Scaffolds (FGSs) are porous biomaterials where porosity changes in space with a specific gradient. In spite of their wide use in bone tissue engineering, possible models that relate the scaffold gradient to the mechanical and biological requirements for the regeneration of the bony tissue are currently missing. In this study we attempt to bridge the gap by developing a mechanobiology-based optimization algorithm aimed to determine the optimal graded porosity distribution in FGSs. The algorithm combines the parametric finite element model of a FGS, a computational mechano-regulation model and a numerical optimization routine. For assigned boundary and loading conditions, the algorithm builds iteratively different scaffold geometry configurations with different porosity distributions until the best microstructure geometry is reached, i.e. the geometry that allows the amount of bone formation to be maximized. We tested different porosity distribution laws, loading conditions and scaffold Young's modulus values. For each combination of these variables, the explicit equation of the porosity distribution law-i.e the law that describes the pore dimensions in function of the spatial coordinates-was determined that allows the highest amounts of bone to be generated. The results show that the loading conditions affect significantly the optimal porosity distribution. For a pure compression loading, it was found that the pore dimensions are almost constant throughout the entire scaffold and using a FGS allows the formation of amounts of bone slightly larger than those obtainable with a homogeneous porosity scaffold. For a pure shear loading, instead, FGSs allow to significantly increase the bone formation compared to a homogeneous porosity scaffolds. Although experimental data is still necessary to properly relate the mechanical/biological environment to the scaffold microstructure, this model represents an important step towards optimizing geometry of functionally graded scaffolds based on mechanobiological criteria.},
	doi = {10.1371/journal.pone.0146935},	
}
@article{
	11589_60468,
	author = { Boccaccio A  and  Uva AE  and  Fiorentino M  and  Lamberti L  and  Monno G },
	title = {A mechanobiology-based algorithm to optimize the microstructure geometry of bone tissue scaffolds},
	year = {2016},
	journal = {INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES},
	volume = {12},
	abstract = {Complexity of scaffold geometries and biological mechanisms involved in the bone generation process make the design of scaffolds a quite challenging task. The most common approaches utilized in bone tissue engineering require costly protocols and time-consuming experiments. In this study we present an algorithm that, combining parametric finite element models of scaffolds with numerical optimization methods and a computational mechano-regulation model, is able to predict the optimal scaffold microstructure. The scaffold geometrical parameters are perturbed until the best geometry that allows the largest amounts of bone to be generated, is reached. We study the effects of the following factors: (1) the shape of the pores; (2) their spatial distribution; (3) the number of pores per unit area. The optimal dimensions of the pores have been determined for different values of scaffold Young’s modulus and compression loading acting on the scaffold upper surface. Pores with rectangular section were predicted to lead to the formation of larger amounts of bone compared to square section pores; similarly, elliptic pores were predicted to allow the generation of greater amounts of bone compared to circular pores. The number of pores per unit area appears to have rather negligible effects on the bone regeneration process. Finally, the algorithm predicts that for increasing loads, increasing values of the scaffold Young’s modulus are preferable. The results shown in the article represent a proof-of-principle demonstration of the possibility to optimize the scaffold microstructure geometry based on mechanobiological criteria},
	doi = {10.7150/ijbs.13158},	
	pages = {1--17}
}
@article{
	11589_5608,
	author = { Gattullo Michele  and  Uva Antonio E  and  Fiorentino M  and  Gabbard Joseph L },
	title = {Legibility in Industrial AR: Text Style, Color Coding, and Illuminance},
	year = {2015},
	journal = {IEEE COMPUTER GRAPHICS AND APPLICATIONS},
	volume = {35},
	abstract = {In the Industrie 4.0 vision, the creation of leading-edge options for interaction between people and technology occupies a key role. In this context, augmented reality (AR) is one of the most suitable solutions. However, it is still not ready to be effectively used in industry. A crucial problem is the legibility of text seen through AR head-worn displays (HWDs). AR interface designers have no standard guidelines to follow, especially for these devices. Literature and anecdotal evidence suggest that legibility depends mainly on background, display technology (that is, see-through optical or video HWDs), and text style (for example, plain text, outline, or billboard). Furthermore, there are constraints to consider in industrial environments, such as standard color-coding practices and workplace lighting. The authors examine aspects affecting text legibility with an emphasis on deriving guidelines to support AR interface designers. Their results suggest that enhancing text contrast via software, along with using the outline or billboard style, is an effective practice to improve legibility in many situations. If one text style is needed for both types of HWD, their results suggest that colored billboards (with neutral white text) are effective. When color coding is not mandatory, white text and blue billboard are more effective than other styles tested.},
	keywords = {augmented reality; helmet mounted displays; user interfaces},
	url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7064667},
	doi = {10.1109/MCG.2015.36},	
	pages = {52--61}
}
@article{
	11589_522,
	author = { Ferrise Francesco  and  Bordegoni Monica  and  Marseglia Luca  and  Fiorentino M  and  Uva Antonio E },
	title = {Can Interactive Finite Element Analysis Improve the Learning of Mechanical Behavior of Materials? A Case Study},
	year = {2015},
	journal = {COMPUTER-AIDED DESIGN AND APPLICATIONS},
	volume = {12},
	abstract = {The paper describes an interactive Finite Elements Analysis (FEA) tool that aims to
improve the learning of mechanical behaviour of materials in industrial engineering
schools. We implemented a “user in the loop” approach where students can explore
the mechanical behaviour of virtual specimens selected from a library of standard
elements (cantilever beam, IPE beams etc.). The users can apply forces or
displacements interactively by mouse or haptic device and visualize and “feel” the
structures stress configurations. We extended our previous work and compared this
novel approach with respect to traditional FEA learning techniques. A test with twenty
engineering students showed that learners following the interactive approach are
faster in completing the given assignment and with a reduced error rate.},
	keywords = {real-time finite element analysis; engineering education; haptics},
	url = {http://www.tandfonline.com/doi/abs/10.1080/16864360.2014.949573},
	doi = {10.1080/16864360.2014.949573},	
	pages = {45--51}
}
@conference{
	11589_23492,
	author = { Bevilacqua V  and  Carnimeo L  and  Guccione P  and  Mastronardi G  and  Uva AE  and  Fiorentino M  and  Monno G  and  Marino F  and  Dotoli M  and  Costantino N  and  Dassisti M  and  Carbonara N },
	title = {A Multimodal System for Nonverbal Human Feature Recognition in Emotional Framework},
	year = {2015},
	publisher = {The Association for Computing Machinery},
	booktitle = {Proceedings of the 9th ACM Conference on Recommender Systems 2015},
	pages = {19--24}
}
@article{
	11589_760,
	author = { Michele Di Donato  and  Fiorentino M  and  Antonio E Uva  and  Michele Gattullo  and  Giuseppe Monno },
	title = {Text legibility for projected Augmented Reality on industrial workbenches},
	year = {2015},
	journal = {COMPUTERS IN INDUSTRY},
	volume = {70},
	abstract = {Augmented Reality is a promising technology for the product lifecycle development, but it is still not established in industrial facilities. The most relevant issues to be addressed relate to the ergonomics: avoid the discomfort of Head-Worn Displays, allow the operators to have free hands and improve data visualization. In this work we study the possibility to use projection-based Augmented Reality (projected AR), as optimal solution for technical visualization on industrial workbenches. In particular, text legibility in projected AR is difficult to optimize since it is affected by many parameters: environment conditions, text style, material and shape of the target surface. This problem is poorly addressed in literature and in the specific industrial field. We analyze the legibility of a set of colors prescribed by international standards for the industrial environments, on six widely used industrial workbenches surfaces. We compared the performance of 14 subjects using projected AR, with that using a traditional LCD monitor. We collected about 2500 measurements (times and errors) through the use of a test application, followed by qualitative interviews. The results showed that, as regards legibility, projected AR can be used in place of traditional monitors in most of the cases. Another not trivial finding is that the influence on legibility of surface irregularities (e.g., grooves, prominences) is more important than that of surface texturization. A possible limitation for the use of projected AR is given by the blue color, whose performance turned out to be lower than that of other colors with every workbench surface. © 2015 Elsevier B.V. All rights reserved.},
	keywords = {Industrial applications; Text legibility; Spatial Augmented Reality;  Visualization},
	url = {http://www.sciencedirect.com/science/article/pii/S0166361515000421},
	doi = {10.1016/j.compind.2015.02.008},	
	pages = {70--78}
}
@conference{
	11589_23385,
	author = { Bordegoni M  and  Ferrise F  and  Carrabba E  and  Di Donato M  and  Fiorentino M  and  Uva A E },
	title = {An application based on Augmented Reality and mobile
technology to support remote maintenance},
	year = {2014},
	volume = {1},
	booktitle = {Conference and Exhibition of the European Association of Virtual and Augmented Reality (2014)},
	abstract = {Product maintenance is a service offered to customers which represents an interesting business for companies. Their interest is both providing a good service in terms of quality and at the same time cutting operational costs. In this view companies are seeking tools that enable them to reach both goals, among those offered by the rapidly evolving ICT sector. The paper describes an application based on augmented reality and mobile technologies aiming to support remote maintenance operations, and improve maintenance services that companies offer to their customers. The paper describes the main idea at the basis of the application, the requirements as well as its implementation. Finally a case study is presented.},
	keywords = {Augmented reality; mobile tecnology; remote mainteinance},
	url = {http://dx.doi.org/10.2312/eurovr.20141351},
	doi = {10.2312/eurovr.20141351},	
	pages = {131--135}
}
@conference{
	11589_20511,
	author = { Garrett  T  and  Debernardis S  and  Radkowski R  and  Chang K  and  Fiorentino M  and  Uva A  and  Oliver J },
	title = {Rigid Object Tracking Algorithms for Low-Cost AR Devices},
	year = {2014},
	publisher = {ASME - American Society of Mechanical Engineers},
	address = {New Jork},
	volume = {1B: 34th Computers and Information in Engineering Conference},
	booktitle = {ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference},
	abstract = {Augmented reality (AR) applications rely on robust and efficient methods for tracking. Tracking methods use a computer-internal representation of the object to track, which can be either sparse or dense representations. Sparse representations use only a limited set of feature points to represent an object to track, whereas dense representations almost mimic the shape of an object. While algorithms performed on sparse representations are faster, dense representations can distinguish multiple objects. The research presented in this paper investigates the feasibility of a dense tracking method for rigid object tracking, which incorporates the both object identification and object tracking steps. We adopted a tracking method that has been developed for the Microsoft Kinect to support single object tracking. The paper describes this method and presents the results. We also compared two different methods for mesh reconstruction in this algorithm. Since meshes are more informative when identifying a rigid object, this comparison indicates which algorithm shows the best performance for this task and guides our future research efforts.},
	keywords = {Algorithm; augmented reality; tracking},
	url = {http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2090494},
	doi = {10.1115/DETC2014-35304},	
}
@conference{
	11589_22893,
	author = { Bevilacqua v  and  Carnimeo l  and  Guccione p  and  Mastronardi g  and  Uva a e  and  Fiorentino m  and  Monno g  and  Marino f  and  Dotoli m  and  Costantino n  and  Carbonara n },
	title = {An Innovative System for Multimodal Emotion 
Recognition from Nonverbal Human Features during 
Job Recruitment},
	year = {2014},
	publisher = {Gangemi Editore:Plaza San Pantaleo 4, I 00186 Rome Italy:011 39 06 6872774, EMAIL: gangemi@jner.it, INTERNET: http://www.gangemieditore.it, Fax: 011 39 06 68806189+ Primo: Bari, Dedalo},
	address = {Roma},
	volume = {volume B},
	booktitle = {score at poliba},
	abstract = {A correct recognition of nonverbal expressions is currently one 
of the most important challenges of research in the field of human 
computer interaction. The ability to recognize human actions could 
change the way to interact with machines, maybe the way to live. In this 
paper, the innovative recognition system developed in the Italian 
research project PON SS-RR, finalized to support the classification 
process of the two behavioral situations (resonance and dissonance) of a 
candidate applying for a job position, is focused and described.},
	pages = {439--449}
}
@article{
	11589_3592,
	author = { Francesco Ferrise  and  Monica Bordegoni  and  Luca Marseglia  and  Michele Fiorentino  and  UVA A },
	title = {Can Interactive Finite Element Analysis improve the learning of Mechanical Behaviour of Materials? A Case Study},
	year = {2014},
	journal = {COMPUTER-AIDED DESIGN AND APPLICATIONS},
	volume = {12},
	pages = {45--51}
}
@article{
	11589_1144,
	author = { Michele Gattullo  and  Antonio Emmanuele Uva  and  Fiorentino M  and  Giuseppe Monno },
	title = {Effect of Text Outline and Contrast Polarity on AR Text Readability in Industrial Lighting},
	year = {2014},
	journal = {IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS},
	volume = {21},
	abstract = {Text readability with augmented reality head-worn displays is critical and at present time, there are no standard guidelines to follow. The readability depends mainly on background lighting, display technology (i.e., OST: optical see-through or VST: video see-through), and text style (e.g., plain text, outline or billboard). In this work, we addressed the readability limits for industrial activities. We experimented the effects of two background illuminances levels (1,000 lx for very fine basic industrial tasks and 4,000 lx for fine machining), two commercially available head-worn display technologies, variable outline widths and contrast polarity of text. We analyzed the performance of 12 subjects by collecting about 3,400 measurements using a specific test application and followed by qualitative interviews. With high illuminances, VST performed better than OST, regardless of contrast polarity and outline width. We found that negative contrast polarity is preferable with VST, and that just a minimum outline (1 px) around black text is optimal. On the contrary, positive contrast polarity should be used with OST and outline is not effective. Therefore, we evaluated the usage limits of the OST by sampling its contrast sensitivity function.},
	keywords = {Optical see-through, Video see-through; Augmented reality; Contrast sensitivity function},
	url = {http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6994851},
	doi = {10.1109/TVCG.2014.2385056},	
	pages = {638--651}
}
@article{
	11589_1576,
	author = { Fiorentino M  and  Uva A E  and  Gattullo M  and  Debernardis S  and  Monno G },
	title = {Augmented reality on large screen for interactive maintenance instructions},
	year = {2014},
	journal = {COMPUTERS IN INDUSTRY},
	volume = {65},
	abstract = {We present an empirical study that evaluates the effectiveness of technical maintenance assisted with
interactive augmented reality instructions. Our approach consists in an augmented visualization on a
large screen and a combination of multiple fixed and mobile cameras. We used commercially available
solutions. In our test, 14 participants completed a set of 4 maintenance tasks based on manual
inspections of a motorbike engine. Tool selection, removal of bolts, and part dis\assembly, are supported
by visual labels, 3D virtual models and 3D animations. All participants executed similar operations in
two modalities: paper manuals and augmented instructions. Statistical analyses proved that augmented
instructions reduced significantly participants’ overall execution time and error rate.},
	keywords = {Computer aided task guidance; Augmented reality; Large screen instruction},
	url = {http://www.sciencedirect.com/science/article/pii/S0166361513002340},
	doi = {10.1016/j.compind.2013.11.004},	
	pages = {270--278}
}
@article{
	11589_3134,
	author = { Debernardis S  and  Fiorentino M  and  Gattullo M  and  Monno G  and  Uva A E },
	title = {Text readability in head-worn displays: Color and style optimization in video versus optical see-through devices},
	year = {2014},
	journal = {IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS},
	volume = {20},
	abstract = {Efficient text visualization in head-worn augmented reality (AR) displays is critical because it is sensitive to display technology, text style and color, ambient illumination and so on. The main problem for the developer is to know the optimal text style for the specific display and for applications where color coding must be strictly followed because it is regulated by laws or internal practices. In this work, we experimented the effects on readability of two head-worn devices (optical and video see-through), two backgrounds (light and dark), five colors (white, black, red, green, and blue), and two text styles (plain text and billboarded text). Font type and size were kept constant. We measured the performance of 15 subjects by collecting about 5,000 measurements using a specific test application and followed by qualitative interviews. Readability turned out to be quicker on the optical see-through device. For the video see-through device, background affects readability only in case of text without billboard. Finally, our tests suggest that a good combination for indoor augmented reality applications, regardless of device and background, could be white text and blue billboard, while a mandatory color should be displayed as billboard with a white text message.},
	keywords = {Augmented reality, optical see-through, style guides, video see-through, vision I/O},
	doi = {10.1109/TVCG.2013.86},	
	pages = {125--139}
}
@conference{
	11589_52475,
	author = { Cukovic S  and  Pankratz F  and  Uva A  and  Devedzic G  and  Lukovic V  and  Fiorentino M  and  Zecevic T },
	title = {CONCEPTUAL AUGMENTED REALITY FRAMEWORK FOR SPINAL DISORDERS REPRESENTATION AND DIAGNOSIS},
	year = {2013},
	booktitle = {Proceedings of The 2nd Regional Conference - Mechatronics In Practice And Education – MechEdu 2013. p. 13-17, ISBN: 978-86-7892-565-8},
	pages = {13--17}
}
@conference{
	11589_52512,
	author = { Ferrise F  and  Bordegoni M  and  Fiorentino M  and  UVA A },
	title = {INTEGRATION OF REALTIME FINITE ELEMENT ANALYSIS AND HAPTIC FEEDBACK FOR HANDS-ON LEARNING OF THE MECHANICAL BEHAVIOR OF MATERIALS},
	year = {2013},
	booktitle = {ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference IDETC/CIE 2013}
}
@article{
	11589_3494,
	author = { Fiorentino M  and  Debernardis S  and  Uva A E  and  Monno G },
	title = {Augmented Reality Text Style Readability with See-through Head-mounted Displays in Industrial Context},
	year = {2013},
	journal = {PRESENCE-TELEOPERATORS AND VIRTUAL ENVIRONMENTS},
	keywords = {Augmented Reality; Head-mounted Displays},
	url = {http://www.mitpressjournals.org/doi/abs/10.1162/PRES_a_00146#.VqZQs_nhAQ8},
	doi = {10.1162/PRES_a_00146},	
}
@article{
	11589_8219,
	author = { Fiorentino M  and  Uva AE  and  Foglia M  and  Bevilacqua V },
	title = {Asymmetry measurement for vibroactive correction in lower limbs mobility},
	year = {2013},
	journal = {COMPUTER SCIENCE AND INFORMATION SYSTEMS},
	volume = {10},
	doi = {10.2298/CSIS120516054F},	
	pages = {1387--1406}
}
@article{
	11589_688,
	author = { Fiorentino  M  and  Radkowski  R  and  Stritzke  C  and  Uva  A  E  and  Monno  G },
	title = {Design review of CAD assemblies using bimanual natural interface.},
	year = {2013},
	journal = {INTERNATIONAL JOURNAL ON INTERACTIVE DESIGN AND MANUFACTURING},
	volume = {7},
	abstract = {The interaction metaphor, based on mouse, monitor and keyboard, presents evident limits in the engineering design review activities, when real and virtual models must be explored and compared, and also in "outside-the-office" environments, where the desk is not available. The presented research aims to explore a new generation of gesture-based interfaces, called "natural interfaces", which promise an intuitive control using free hands and without the desk support. We present a novel natural design review workspace which acquires user motion using a combination of video and depth cameras and visualizes the CAD models using monitor-based augmented reality. We implemented a bimanual egocentric pointer paradigm by a virtual active surface in front of the user. We used a XML configurable approach to explore bimanual gesture commands to browse, select, dis/assembly and explode 3D complex models imported in standard STEP format. Our experiments demonstrated that the virtual active surface is able to effectively trigger a set of CAD specific commands and to improve technical navigation in non-desktop environments: e.g. shop floor maintenance, on site quality control, etc. We evaluated the feasibility and robustness of the interface and reported a high degree of acceptance from the users who preferred the presented interface to a unconstrained 3D manipulation.},
	keywords = {3D manipolazione, realtà aumentata,  interfacce uomo-computer naturali},
	doi = {10.1007/s12008-012-0179-3},	
	pages = {249--260}
}
@article{
	11589_3058,
	author = { FIORENTINO M  and  DEBERNARDIS S  and  UVA A  and  MONNO G },
	title = {E ora come lo esporto?},
	year = {2012},
	journal = {IL PROGETTISTA INDUSTRIALE},
	volume = {1},
	abstract = {lo scambio dati nei vari formati CAD è ancora un problema per l'industria. Questo articolo presenta una panoramica su cinque dei formati più diffusi.},
	pages = {28--30}
}
@conference{
	11589_52634,
	author = { Radkowski R  and  FIORENTINO M  and  UVA A },
	title = {2D/3D technical documentation navigation using natural interaction and augmented reality for maintenance},
	year = {2012},
	booktitle = {Proceedings of the TMCE 2012}
}