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https://www.readbyqxmd.com/read/28809700/cognitive-cost-of-using-augmented-reality-displays
#1
James Baumeister, Seung Youb Ssin, Neven A M ElSayed, Jillian Dorrian, David P Webb, James A Walsh, Timothy M Simon, Andrew Irlitti, Ross T Smith, Mark Kohler, Bruce H Thomas
This paper presents the results of two cognitive load studies comparing three augmented reality display technologies: spatial augmented reality, the optical see-through Microsoft HoloLens, and the video see-through Samsung Gear VR. In particular, the two experiments focused on isolating the cognitive load cost of receiving instructions for a button-pressing procedural task. The studies employed a self-assessment cognitive load methodology, as well as an additional dual-task cognitive load methodology. The results showed that spatial augmented reality led to increased performance and reduced cognitive load...
August 10, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28809406/clot-entrapped-blood-cells-in-synergy-with-human-mesenchymal-stem-cells-create-a-pro-angiogenic-healing-response
#2
Melanie A Burkhardt, Isabel Gerber, Cameron Moshfegh, Miriam S Lucas, Jasmin Waser, Maximilian Y Emmert, Simon P Hoerstrup, Falko Schlottig, Viola Vogel
Blood clots stop bleeding and provide cell-instructive microenvironments. Still, in vitro models used to study implant performance typically neglect any possible interactions of recruited cells with surface-adhering blood clots. Here we study the interaction and synergies of bone marrow derived human mesenchymal stem cells (hMSCs) with surface-induced blood clots in an in vitro model by fluorescence microscopy, scanning and correlative light and electron microscopy, ELISA assays and zymography. The clinically used alkali-treated rough titanium (Ti) surfaces investigated here are known to enhance blood clotting compared to native Ti and to improve the healing response, but the underlying mechanisms remain elusive...
August 15, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28801303/health-care-providers-knowledge-of-hpv-vaccination-barriers-and-strategies-in-a-state-with-low-hpv-vaccine-receipt-mixed-methods-study
#3
Echo L Warner, Qian Ding, Lisa Pappas, Julia Bodson, Brynn Fowler, Ryan Mooney, Anne C Kirchhoff, Deanna Kepka
BACKGROUND: Human papillomavirus (HPV) vaccination is below national goals in the United States. Health care providers are at the forefront of improving vaccination in the United States, given their close interactions with patients and parents. OBJECTIVE: The objective of this study was to assess the associations between demographic and practice characteristics of the health care providers with the knowledge of HPV vaccination and HPV vaccine guidelines. Furthermore, our aim was to contextualize the providers' perceptions of barriers to HPV vaccination and strategies for improving vaccination in a state with low HPV vaccine receipt...
August 11, 2017: JMIR Cancer
https://www.readbyqxmd.com/read/28799784/memory-as-a-cognitive-representation-of-post-traumatic-growth
#4
Shuhui Huang, Yiqun Gan
BACKGROUND AND OBJECTIVES: Previous studies on traumatic memory have primarily focused on the correlation between traumatic symptoms and negative memories, often utilizing the directed forgetting paradigm. Different from previous research, this study aimed to examine the correlation of post-traumatic growth (PTG) and positive memories, with the objective to explore the directed forgetting effect of positive material and its relationship with PTG. DESIGN: A 2 (PTG level: high vs...
August 11, 2017: Anxiety, Stress, and Coping
https://www.readbyqxmd.com/read/28798212/the-dna-triangle-and-its-application-to-learning-meiosis
#5
L Kate Wright, Christina M Catavero, Dina L Newman
Although instruction on meiosis is repeated many times during the undergraduate curriculum, many students show poor comprehension even as upper-level biology majors. We propose that the difficulty lies in the complexity of understanding DNA, which we explain through a new model, the DNA triangle The DNA triangle integrates three distinct scales at which one can think about DNA: chromosomal, molecular, and informational Through analysis of interview and survey data from biology faculty and students through the lens of the DNA triangle, we illustrate important differences in how novices and experts are able to explain the concepts of ploidy, homology, and mechanism of homologous pairing Similarly, analysis of passages from 16 different biology textbooks shows a large divide between introductory and advanced material, with introductory books omitting explanations of meiosis-linked concepts at the molecular level of DNA...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/28791976/a-prospective-randomized-double-blind-clinical-trial-of-one-nano-hybrid-and-one-high-viscosity-bulk-fill-composite-restorative-systems-in-class-ii-cavities-12-months-results
#6
H Colak, U Tokay, R Uzgur, M M Hamidi, E Ercan
BACKGROUND: Recently, manufacturers have introduced bulk-fill composite resins that reportedly can be placed in increments of 4 mm or greater. OBJECTIVE: The purpose of this article was to report the results of 12 months prospective randomized clinical trial that evaluated the clinical performance of one high-viscosity bulk-fill composite resin in Class II cavities of posterior teeth. MATERIALS AND METHODS: Thirty-four participantshad at least two Class II cavities included the study...
July 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28791813/an-evaluation-of-selected-oral-health-indicators-and-cariogenic-bacteria-titer-in-patients-with-helicobacter-pylori
#7
Jakub Urban, Rafał Koszowski, Anna Płachetka, Andrzej Wiczkowski
BACKGROUND: Studies based on polymerase chain reaction (PCR) techniques indicate that Helicobacter pylori can be constantly or temporarily present in the oral cavity in virulent or non-virulent form. Streptococcus mutans exerts a strong inhibitory effect on H. pylori. OBJECTIVES: The aim of the present study was to investigate the prevalence and virulence of H. pylori in the oral cavity and the correlation of these factors with oral health and cariogenic bacteria titer...
May 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28782249/self-regulated-learning-from-illustrated-text-eye-movement-modelling-to-support-use-and-regulation-of-cognitive-processes-during-learning-from-multimedia
#8
Katharina Scheiter, Carina Schubert, Anne Schüler
BACKGROUND: When learning with text and pictures, learners often fail to adequately process the materials, which can be explained as a failure to self-regulate one's learning by choosing adequate cognitive learning processes. Eye movement modelling examples (EMME) showing how to process multimedia instruction have improved elementary school children's learning from text and pictures in previous studies. AIMS: We tested whether the positive effects of EMME for improving self-regulated multimedia learning extend to university students and teaching of more comprehensive processing strategies...
August 7, 2017: British Journal of Educational Psychology
https://www.readbyqxmd.com/read/28781071/effect-of-thixotropic-agents-as-additives-on-the-mechanical-properties-of-maxillofacial-silicone-elastomers
#9
Abdel Rahim M Bibars, Zeid Al-Hourani, Yousef Khader, Mark Waters
STATEMENT OF PROBLEM: The incorporation of thixotropic agents to prevent slumping during the silicone packing procedure may alter some favorable mechanical properties of the silicone elastomers and could possibly influence the success of the prosthesis. PURPOSE: The purpose of this in vitro study was to evaluate the effect of adding thixotropic agents on the mechanical properties of 3 commonly used silicone elastomers. MATERIAL AND METHODS: Specimens of 3 maxillofacial silicones (M511, Z004; Technovent Ltd, and A2000; Factor II Inc) were prepared according to the manufacturers' instructions...
August 4, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28781066/midwives-experiences-of-participating-in-a-midwifery-research-project-a-qualitative-study
#10
Susanne Åhlund, Sofia Zwedberg, Ingegerd Hildingsson, Malin Edqvist, Helena Lindgren
PROBLEM AND BACKGROUND: In an earlier research project midwives were asked to perform women-centered care focusing on the assumption that the physiological process in the second stage of labour could be trusted and that the midwives role should be encouraging and supportive rather than instructing. There is no knowledge about how midwives participating in such a research project, uses their skills and experience from the study in their daily work. AIM: The aim in this study was to investigate how midwives experienced implementing woman-centered care during second stage of labour...
August 3, 2017: Women and Birth: Journal of the Australian College of Midwives
https://www.readbyqxmd.com/read/28780302/systematic-assessment-reveals-lack-of-understandability-for-prostate-biopsy-online-patient-education-materials
#11
Kimberly A Maciolek, David F Jarrard, E Jason Abel, Sara L Best
OBJECTIVE: To evaluate the accuracy, readability, understandability and actionability of internet patient education materials (PEM) about transrectal ultrasound-guided (TRUS) prostate biopsy. MATERIALS AND METHODS: A comprehensive internet search was performed to find PEM with pre- or post-biopsy instructions. PEM that were duplicates, government affiliated, international, or video-based were excluded. Biopsy instructions were evaluated for accuracy and presence of essential topics...
August 2, 2017: Urology
https://www.readbyqxmd.com/read/28770540/collaborative-remembering-revisited-study-context-access-modulates-collaborative-inhibition-and-later-benefits-for-individual-memory
#12
Magdalena Abel, Karl-Heinz T Bäuml
Collaborating groups typically show reduced recall relative to nominal groups, i.e., to the cumulated non-redundant recall of the same number of people remembering in isolation-a finding termed collaborative inhibition. Motivated by the results of several previous studies, this study examined in two experiments whether access to study context at test influences the effects of collaboration. In both experiments, subjects collaborated in triads or recalled previously studied material in isolation. Experiment 1 applied short versus prolonged retention intervals to vary access to study context at test, whereas Experiment 2 used the list-method directed forgetting task and applied remember versus forget instructions to modulate context access...
August 2, 2017: Memory & Cognition
https://www.readbyqxmd.com/read/28769832/supporting-third-year-medical-students-skill-acquisition-and-self-efficacy-with-coping-models-and-process-feedback-during-laparoscopic-knot-tying-simulation
#13
Michael S Dempsey, Douglas F Kauffman
Background: During the third year general surgery clerkship, medical students are required to develop laparoscopic knot-tying skills. Knot-tying skills studies often rely on objective variables (e.g., time, materials used, number of iterations) that lend themselves to correlational analysis of pre- and post-intervention skill level. This study differs by examining how instructional interventions-role modeling and feedback-affect medical students' skill acquisition and self-efficacy during a laparoscopic surgical simulation training session...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28766525/-the-possibilities-for-the-use-of-the-spectral-analysis-to-overcome-the-incompatibility-of-the-speech-materials-for-the-purpose-of-medical-criminalistic-identification-of-the-speaker
#14
P A Kir'yanov, A Sh Kaganov
The objective of the present study was the formulation of the theoretical premises on which to base the approaches to the overcoming of the limitations not infrequently imposed on the sound records of the speech material of interest. The secondary objective was the development of the methods for this purpose. We analyzed the literature sources, the methodological instructive regulations, and the results of medical criminalistics investigations. The study has demonstrated that the spectral analysis of the speech materials provides a reliable tool for overcoming the incomplete (by force of different causes) compatibility between the initial phonograms and those under consideration for the purpose of forensic medical expertise with a view to the identification of personality of the speaker...
2017: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/28759739/online-embryology-teaching-using-learning-management-systems-appears-to-be-a-successful-additional-learning-tool-among-egyptian-medical-students
#15
Ahmed Farid Al-Neklawy
Although the traditional didactic lecture is considered to be efficient for presenting information and providing explanations, it usually does not provide adequate time for deeper learning activities. So, traditional lecture is one of the most widely criticized educational methods. Virtual learning environment (VLE) is a specially designed environment that facilitates teachers' management of educational courses for their students, using computer hardware and software, which involves distance learning. In this study, we evaluated the experiment of online teaching of General Embryology for Egyptian undergraduate medical students using WizIQ learning management system...
July 29, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/28759705/validation-of-clay-modeling-as-a-learning-tool-for-the-periventricular-structures-of-the-human-brain
#16
Veronica Akle, Ricardo A Peña-Silva, Diego M Valencia, Carlos W Rincón-Perez
Visualizing anatomical structures and functional processes in three dimensions (3D) are important skills for medical students. However, contemplating 3D structures mentally and interpreting biomedical images can be challenging. This study examines the impact of a new pedagogical approach to teaching neuroanatomy, specifically how building a 3D-model from oil-based modeling clay affects learners' understanding of periventricular structures of the brain among undergraduate medical students in Colombia. Students were provided with an instructional video before building the models of the structures, and thereafter took a computer-based quiz...
July 31, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28744821/evaluating-the-effect-of-instruction-and-practice-schedule-on-the-acquisition-of-ecg-interpretation-skills
#17
Sandra Monteiro, Lindsay Melvin, Joshua Manolakos, Ameen Patel, Geoffrey Norman
INTRODUCTION: Evidence of the benefit of distributed instruction and interleaved practice comes from studies using simple materials (e. g. word pairs). Furthermore, there is currently no evidence of the combined impact of these strategies in undergraduate medical education. The present study evaluated the impact of varying both instruction and practice schedules for the acquisition of ECG interpretation skills. METHODS: We conducted a 2 × 2 factorial study with two levels of instruction (massed and distributed) and two levels of practice (interleaved and blocked)...
August 2017: Perspectives on Medical Education
https://www.readbyqxmd.com/read/28736592/a-multicenter-prospective-survey-of-adverse-events-associated-with-acupuncture-and-moxibustion-in-japan
#18
Nobutatsu Furuse, Hisashi Shinbara, Akihito Uehara, Masaaki Sugawara, Toshiya Yamazaki, Masayoshi Hosaka, Hitoshi Yamashita
Background: There have been only a few prospective surveys on adverse events (AEs) in Japanese-style acupuncture practice, and these surveys were conducted only in a single college acupuncture clinic. Objective: The goal of this research was to assess the safety of acupuncture and moxibustion performed in educational facilities in Japan. Materials and Methods: This was a multicenter prospective survey, using paper reporting forms. It was conducted in eight acupuncture clinics affiliated with educational institutions...
June 1, 2017: Medical Acupuncture
https://www.readbyqxmd.com/read/28734899/strategies-to-develop-endogenous-stem-cell-recruiting-bioactive-materials-for-tissue-repair-and-regeneration
#19
Settimio Pacelli, Sayantani Basu, Jonathan Whitlow, Aparna R Chakravarti, Francisca Acosta, Arushi Varshney, Saman Modaresi, Cory Berkland, Arghya Paul
A leading strategy in tissue engineering is the design of biomimetic scaffolds that stimulate the body's repair mechanisms through the recruitment of endogenous stem cells to sites of injury. Approaches that employ the use of chemoattractant gradients to guide tissue regeneration without external cell sources are favored over traditional cell-based therapies that have limited potential for clinical translation. Following this concept, bioactive scaffolds can be engineered to provide a temporally and spatially controlled release of biological cues, with the possibility to mimic the complex signaling patterns of endogenous tissue regeneration...
July 19, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28726902/limiting-the-valence-advancements-and-new-perspectives-on-patchy-colloids-soft-functionalized-nanoparticles-and-biomolecules
#20
Emanuela Bianchi, Barbara Capone, Ivan Coluzza, Lorenzo Rovigatti, Peter D J van Oostrum
Limited bonding valence, usually accompanied by well-defined directional interactions and selective bonding mechanisms, is nowadays considered among the key ingredients to create complex structures with tailored properties: even though isotropically interacting units already guarantee access to a vast range of functional materials, anisotropic interactions can provide extra instructions to steer the assembly of specific architectures. The anisotropy of effective interactions gives rise to a wealth of self-assembled structures both in the realm of suitably synthesized nano- and micro-sized building blocks and in nature, where the isotropy of interactions is often a zero-th order description of the complicated reality...
July 20, 2017: Physical Chemistry Chemical Physics: PCCP
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