Evaluating heuristics for tabletop user segmentation based on simultaneous interaction

Differentiating between users that interact on a tabletop could be beneficial for collaborative tasks to support territoriality-oriented features such as a more efficient space management or a better presentation of the contents. In this paper, we design a novel algorithm for the user differentiation or segmentation based on the simultaneous manipulation of the controls. This is a potential differentiating factor that has remained unexplored so far, and in combination with other factors may become relevant to successfully accomplish such differentiation task. Basically it relies on the idea that users manipulate digital elements with a single hand, and hence, if two controls are being used at the same time, they most likely belong to different users. On the generic algorithm, three different versions have been implemented that include several heuristics to address the problem. The comparison under a simulated experiment shows that the heuristic involving more knowledge on distances on user controls performed better according to different goodness functions. This shows promising to further development and refinement of the approach by expanding it with other potential factors to eventually build a robust user differentiation subsystem.This work received financial support from the Spanish Ministry of Education under the National Strategic Program of Research and Project TSI2010-20488. Our thanks to the ASIC/Polimedia team for the support in computer hardware.García Sanjuan, F.; Jaén Martínez, FJ.; Catalá Bolós, A. (2013). Evaluating heuristics for tabletop user segmentation based on simultaneous interaction. Expert Systems with Applications. 40(14):5578-5587. https://doi.org/10.1016/j.eswa.2013.04.011S55785587401

TangiWheel: A widget for manipulating collections on tabletop displays supporting hybrid Input modality

In this paper we present TangiWheel, a collection manipulation widget for tabletop displays. Our implementation is flexible, allowing either multi-touch or interaction, or even a hybrid scheme to better suit user choice and convenience. Different TangiWheel aspects and features are compared with other existing widgets for collection manipulation. The study reveals that TangiWheel is the first proposal to support a hybrid input modality with large resemblance levels between touch and tangible interaction styles. Several experiments were conducted to evaluate the techniques used in each input scheme for a better understanding of tangible surface interfaces in complex tasks performed by a single user (e.g., involving a typical master-slave exploration pattern). The results show that tangibles perform significantly better than fingers, despite dealing with a greater number of interactions, in situations that require a large number of acquisitions and basic manipulation tasks such as establishing location and orientation. However, when users have to perform multiple exploration and selection operations that do not require previous basic manipulation tasks, for instance when collections are fixed in the interface layout, touch input is significantly better in terms of required time and number of actions. Finally, when a more elastic collection layout or more complex additional insertion or displacement operations are needed, the hybrid and tangible approaches clearly outperform finger-based interactions.. ©2012 Springer Science+Business Media, LLC & Science Press, ChinaThe work is supported by the Ministry of Education of Spain under Grant No. TSI2010-20488. Alejandro Catala is supported by an FPU fellowship for pre-doctoral research staff training granted by the Ministry of Education of Spain with reference AP2006-00181.Catalá Bolós, A.; García Sanjuan, F.; Jaén Martínez, FJ.; Mocholi Agües, JA. (2012). TangiWheel: A widget for manipulating collections on tabletop displays supporting hybrid Input modality. Journal of Computer Science and Technology. 27(4):811-829. doi:10.1007/s11390-012-1266-4S811829274Jordà S, Geiger G, Alonso M, Kaltenbrunner M. The reacTable: Exploring the synergy between live music performance and tabletop tangible interfaces. In Proc. TEI 2007, Baton Rouge, LA, USA, Feb. 15-17, 2007, pp.139–146.Vandoren P, van Laerhoven T, Claesen L, Taelman J, Raymaekers C, van Reeth F. IntuPaint: Bridging the gap between physical and digital painting. In Proc. TABLETOP2008, Amterdam, the Netherlands, Oct. 1-3, 2008, pp.65–72.Schöning J, Hecht B, Raubal M, Krüger A, Marsh M, Rohs M. Improving interaction with virtual globes through spatial thinking: Helping users ask “why?”. In Proc. IUI 2008, Canary Islans, Spain, Jan. 13-16, 2008, pp.129–138.Fitzmaurice GW, BuxtonW. An empirical evaluation of graspable user interfaces: Towards specialized, space-multiplexed input. In Proc. CHI 1997, Atlanta, USA, March 22-27, 1997, pp.43–50.Tuddenham P, Kirk D, Izadi S. Graspables revisited: Multitouch vs. tangible input for tabletop displays in acquisition and manipulation tasks. In Proc. CHI 2010, Atlanta, USA, April 10-15, 2010, pp.2223–2232.Lucchi A, Jermann P, Zufferey G, Dillenbourg P. An empirical evaluation of touch and tangible interfaces for tabletop displays. In Proc. TEI 2010, Cambridge, USA, Jan. 25-27, 2010, pp.177–184.Fitzmaurice G W, Ishii H, Buxton W. Bricks: Laying the foundations for graspable user interfaces. In Proc. CHI 1995, Denver, USA, May 7-11, 1995, pp.442–449.Ishii H, Ullmer B. Tangible bits: Towards seamless interfaces between people, bits and atoms. In Proc. CHI 1997, Atlanta, USA, March 22-27, 1997, pp.234–241.Ullmer B, Ishii H, Glas D. mediaBlocks: Physical containers, transports, and controls for online media. In Proc. SIGGRAPH1998, Orlando, USA, July 19-24, 1998, pp.379–386.Shen C, Hancock M S, Forlines C, Vernier F D. CoR2Ds: Context-rooted rotatable draggables for tabletop interaction. In Proc. CHI 2005, Portland, USA, April 2-7, 2005, pp.1781–1784.Lepinski G J, Grossman T, Fitzmaurice G. The design and evaluation of multitouch marking menus. In Proc. CHI 2010, Atlanta, USA, April 10-15, 2010, pp.2233–2242.Accot J, Zhai S. Beyond Fitts’ law: Models for trajectorybased HCI tasks. In Proc. CHI 1997, Atlanta, USA, March 22-27, 1997, pp.295–302.Song H, Kim B, Lee B, Seo J. A comparative evaluation on tree visualization methods for hierarchical structures with large fan-outs. In Proc. CHI 2010, Atlanta, USA, April 10-15, 2010, pp.223–232.Bailly G, Lecolinet E, Nigay L. Wave menus: Improving the novice mode of hierarchical marking menus. In Proc. INTERACT2007, Río de Janeiro, Brazil, Sept. 10-14, 2007, pp.475–488.Zhao S, Agrawala M, Hinckley K. Zone and polygon menus: Using relative position to increase the breadth of multi-stroke marking menus. In Proc. CHI 2006, Montreal, Canada, April 24-27, 2006, pp.1077–1086.Patten J, Recht B, Ishii H. Interaction techniques for musical performance with tabletop tangible interfaces. In Proc. ACE2006, Hollywood, USA, Jun. 14-16, 2006, Article No.27.Weiss M, Wagner J, Jansen Y, Jennings R, Khoshabeh R, Hollan J D, Borchers J. SLAP widgets: Bridging the gap between virtual and physical controls on tabletops. In Proc. CHI 2009, Boston, USA, April 4-9, 2009, pp.481–490.Hancock M, Hilliges O, Collins C, Baur D, Carpendale S. Exploring tangible and direct touch interfaces for manipulating 2D and 3D information on a digital table. In Proc. ITS 2009, Banff, Canada, Nov. 23-25, pp.77–84.Hilliges O, Baur D, Butz A. Photohelix: Browsing, sorting and sharing digital photo collections. In Proc. Horizontal Interactive Human-Computer Systems (TABLETOP2007), Newport, Rhode Island, USA, Oct. 10-12, 2007, pp.87–94.Hesselmann T, Flöring S, Schmidt M. Stacked half-Pie menus: Navigating nested menus on interactive tabletops. In Proc. ITS 2009, Banff, Canada, Nov. 23-25, 2009, pp.173–180.Gallardo D, Jordà S. Tangible jukebox: Back to palpable music. In Proc. TEI 2010, Boston, USA, Jan. 25-27, 2010, pp.199–202.Fishkin K. A taxonomy for and analysis of tangible interfaces. Personal and Ubiquitous Computing, 2004, 8(5): 347–358.Catala A, Jaen J, Martinez-Villaronga A A, Mocholi J A. AGORAS: Exploring creative learning on tangible user interfaces. In Proc. COMPSAC 2011, Munich, Germany, July 18-22, 2011, pp.326–335.Catala A, Garcia-Sanjuan F, Azorin J, Jaen J, Mocholi J A. Exploring direct communication and manipulation on interactive surfaces to foster novelty in a creative learning environment. IJCSRA, 2012, 2(1): 15–24.Catala A, Jaen J, van Dijk B, Jord`a S. Exploring tabletops as an effective tool to foster creativity traits. In Proc. TEI 2012, Kingston, Canada, Feb. 19-22, 2012, pp.143–150.Hopkins D. Directional selection is easy as pie menus. In: The Usenix Association Newsletter, 1987, 12(5): 103.Microsoft Surface User Experience Guidelines. http://msdn.microsoft.com/en-us/library/ff318692.aspx , May 2011.Maydak M, Stromer R, Mackay H A, Stoddard L T. Stimulus classes in matching to sample and sequence production: The emergence of numeric relations. Research in Developmental Disabilities, 1995, 16(3): 179–204

Children s Acceptance of a Collaborative Problem Solving Game Based on Physical Versus Digital Learning Spaces

[EN] Collaborative problem solving (CPS) is an essential soft skill that should be fostered from a young age. Research shows that a good way of teaching such skills is through video games; however, the success and viability of this method may be affected by the technological platform used. In this work we propose a gameful approach to train CPS skills in the form of the CPSbot framework and describe a study involving 80 primary school children on user experience and acceptance of a game, Quizbot, using three different technological platforms: two purely digital (tabletop and handheld tablets) and another based on tangible interfaces and physical spaces. The results show that physical spaces proved to be more effective than the screen-based platforms in several ways, as well as being considered more fun and easier to use by the children. Finally, we propose a set of design considerations for future gameful CPS systems based on the observations made during this study.Spanish Ministry of Economy and Competitiveness and the European Regional Development Fund (project TIN2014-60077-R); Spanish Ministry of Education, Culture and Sport (with fellowship FPU14/00136) and Conselleria d'Educacio, Cultura i Esport (Generalitat Valenciana, Spain) (grant ACIF/2014/214).Jurdi, S.; García Sanjuan, F.; Nácher-Soler, VE.; Jaén Martínez, FJ. (2018). Children s Acceptance of a Collaborative Problem Solving Game Based on Physical Versus Digital Learning Spaces. Interacting with Computers. 30(3):187-206. https://doi.org/10.1093/iwc/iwy006S18720630

Interactive technologies for preschool game-based instruction: Experiences and future challenges

This is the author’s version of a work that was accepted for publication in Entertainment Computing. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Entertainment Computing, vol. 17 (2016). DOI 10.1016/j.entcom.2016.07.001.[EN] According to current kindergarten curricula, game play is an important basis for children development and it is the main driving force when designing educational activities during early childhood. This paper presents a review of the current state of the art of game technologies that support pre-kindergarten and kindergarten children development. Moreover, the most emergent technologies for developing educational games for preschool children are identified and a set of future challenges are discussed. The main goal of this work is to review the state of the art in interactive technologies which will help educators, game designers and Human-Computer Interaction (HCI) experts in the area of game-based kindergarten instruction. 2016 Elsevier B.V. All rights reserved.This work received financial support from Spanish Ministry of Economy and Competitiveness and funded by the European Development Regional Fund (EDRF-FEDER) with the project TIN2014-60077-R (SUPEREMOS). This work is also supported by a predoctoral fellowship within the FPU program from the Spanish Ministry of Education, Culture and Sports to V. Nacher (FPU14/00136) and from GVA (ACIF/2014/214) to F. Garcia-Sanjuan.Nácher-Soler, VE.; García Sanjuan, F.; Jaén Martínez, FJ. (2016). Interactive technologies for preschool game-based instruction: Experiences and future challenges. Entertainment Computing. 17:19-29. https://doi.org/10.1016/j.entcom.2016.07.001S19291

Reflexiones desde la enseñanza y el aprendizaje de la arquitectura

DOCEO nace como una idea del Decano del Departamento de Arquitectura y Diseño de la Universidad de la Costa, Samuel Padilla-Llano para divulgar todos los procesos creativos y las experiencias exitosas en el noble ejercicio de enseñanza y aprendizaje de la Arquitectura y el Diseño que se dan a través de las dinámicas en el Aula

Association of Candidate Gene Polymorphisms With Chronic Kidney Disease: Results of a Case-Control Analysis in the Nefrona Cohort

Chronic kidney disease (CKD) is a major risk factor for end-stage renal disease, cardiovascular disease and premature death. Despite classical clinical risk factors for CKD and some genetic risk factors have been identified, the residual risk observed in prediction models is still high. Therefore, new risk factors need to be identified in order to better predict the risk of CKD in the population. Here, we analyzed the genetic association of 79 SNPs of proteins associated with mineral metabolism disturbances with CKD in a cohort that includes 2, 445 CKD cases and 559 controls. Genotyping was performed with matrix assisted laser desorption ionizationtime of flight mass spectrometry. We used logistic regression models considering different genetic inheritance models to assess the association of the SNPs with the prevalence of CKD, adjusting for known risk factors. Eight SNPs (rs1126616, rs35068180, rs2238135, rs1800247, rs385564, rs4236, rs2248359, and rs1564858) were associated with CKD even after adjusting by sex, age and race. A model containing five of these SNPs (rs1126616, rs35068180, rs1800247, rs4236, and rs2248359), diabetes and hypertension showed better performance than models considering only clinical risk factors, significantly increasing the area under the curve of the model without polymorphisms. Furthermore, one of the SNPs (the rs2248359) showed an interaction with hypertension, being the risk genotype affecting only hypertensive patients. We conclude that 5 SNPs related to proteins implicated in mineral metabolism disturbances (Osteopontin, osteocalcin, matrix gla protein, matrix metalloprotease 3 and 24 hydroxylase) are associated to an increased risk of suffering CKD

Reflexiones desde la enseñanza y el aprendizaje de la arquitectura 2

La segunda entrega del libro Doceo “Reflexiones desde la enseñanza y el aprendizaje de la arquitectura”, es fruto de metodologías de enseñanza- aprendizaje diseñadas para cada caso, y que representan la impronta personal de cada autor. Es importante resaltar, que todos los argumentos presentados en esta obra corresponden a experiencias en el aula, conclusiones de docentes y/o estudiantes en el marco de una asignatura desarrollada en la Universidad de la Costa con sede en Barranquilla, Colombia. El Volumen dos de esta entrega se ha editado progresivamente, en una primera parte la compilación estuvo a cargo de la profesora Stephania Mouthon, quien centralizó todos los manuscritos, luego de esto, hemos construido de manera conjunta el diseño editorial, estructura del cuerpo y demás aspectos de perfeccionamiento del documento.Departamento de Arquitectura, Universidad de la Cost

TLR9 activation dampens the early inflammatory response to paracoccidioides brasiliensis, Impacting host survival

Background: Paracoccidioides brasiliensis causes paracoccidioidomycosis, one of the most prevalent systemic mycosis in Latin America. Thus, understanding the characteristics of the protective immune response to P. brasiliensis is of interest, as it may reveal targets for disease control. The initiation of the immune response relies on the activation of pattern recognition receptors, among which are TLRs. Both TLR2 and TLR4 have been implicated in the recognition of P. brasiliensis and regulation of the immune response. However, the role of TLR9 during the infection by this fungus remains unclear.J.F. Menino was supported by a grant from Fundacao para a Ciencia e Tecnologia (FCT), Portugal (SFRH/BD/33446/2008). This work was supported by a grant from FCT (PTDC/BIA-MIC/108309/2008). M. Saraiva is a Ciencia 2007 fellow and M. Sturme is a Ciencia 2008 fellow. We would also like to thank FAPESP (Fundacao para Amparo a Pesquisa do Estado de Sao Paulo) and CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico) for financial support. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript

Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study

Background: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods: This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings: This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (74·0%) had emergency surgery and 280 (24·8%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (26·1%) patients. 30-day mortality was 23·8% (268 of 1128). Pulmonary complications occurred in 577 (51·2%) of 1128 patients; 30-day mortality in these patients was 38·0% (219 of 577), accounting for 81·7% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 1·75 [95% CI 1·28–2·40], p\textless0·0001), age 70 years or older versus younger than 70 years (2·30 [1·65–3·22], p\textless0·0001), American Society of Anesthesiologists grades 3–5 versus grades 1–2 (2·35 [1·57–3·53], p\textless0·0001), malignant versus benign or obstetric diagnosis (1·55 [1·01–2·39], p=0·046), emergency versus elective surgery (1·67 [1·06–2·63], p=0·026), and major versus minor surgery (1·52 [1·01–2·31], p=0·047). Interpretation: Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding: National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research

Molecular mechanisms of cell death: recommendations of the Nomenclature Committee on Cell Death 2018.

Over the past decade, the Nomenclature Committee on Cell Death (NCCD) has formulated guidelines for the definition and interpretation of cell death from morphological, biochemical, and functional perspectives. Since the field continues to expand and novel mechanisms that orchestrate multiple cell death pathways are unveiled, we propose an updated classification of cell death subroutines focusing on mechanistic and essential (as opposed to correlative and dispensable) aspects of the process. As we provide molecularly oriented definitions of terms including intrinsic apoptosis, extrinsic apoptosis, mitochondrial permeability transition (MPT)-driven necrosis, necroptosis, ferroptosis, pyroptosis, parthanatos, entotic cell death, NETotic cell death, lysosome-dependent cell death, autophagy-dependent cell death, immunogenic cell death, cellular senescence, and mitotic catastrophe, we discuss the utility of neologisms that refer to highly specialized instances of these processes. The mission of the NCCD is to provide a widely accepted nomenclature on cell death in support of the continued development of the field