LLUSD Articulator - Volume 31, Number 1

Contents: 6 | Dean\u27s Message10 | Curriculum transformation continues11 | Holli Riter appointed Chief Medical Officer15 | Patient Layla\u27s jaw in a day 17 | Just-in-time Homecoming 202026 | From the Class of 1970, a story of service27 | LLUSD manages a pandemic33 | Imaging Clinic acquires NewTom VGi EVO35 | Lane Thomsen honored for CE contributionshttps://scholarsrepository.llu.edu/articulator/1019/thumbnail.jp

Mobile three-dimensional city maps

Maps are visual representations of environments and the objects within, depicting their spatial relations. They are mainly used in navigation, where they act as external information sources, supporting observation and decision making processes. Map design, or the art-science of cartography, has led to simplification of the environment, where the naturally three-dimensional environment has been abstracted to a two-dimensional representation, populated with simple geometrical shapes and symbols. However, abstract representation requires a map reading ability. Modern technology has reached the level where maps can be expressed in digital form, having selectable, scalable, browsable and updatable content. Maps may no longer even be limited to two dimensions, nor to an abstract form. When a real world based virtual environment is created, a 3D map is born. Given a realistic representation, would the user no longer need to interpret the map, and be able to navigate in an inherently intuitive manner? To answer this question, one needs a mobile test platform. But can a 3D map, a resource hungry real virtual environment, exist on such resource limited devices? This dissertation approaches the technical challenges posed by mobile 3D maps in a constructive manner, identifying the problems, developing solutions and providing answers by creating a functional system. The case focuses on urban environments. First, optimization methods for rendering large, static 3D city models are researched and a solution provided by combining visibility culling, level-of-detail management and out-of-core rendering, suited for mobile 3D maps. Then, the potential of mobile networking is addressed, developing efficient and scalable methods for progressive content downloading and dynamic entity management. Finally, a 3D navigation interface is developed for mobile devices, and the research validated with measurements and field experiments. It is found that near realistic mobile 3D city maps can exist in current mobile phones, and the rendering rates are excellent in 3D hardware enabled devices. Such 3D maps can also be transferred and rendered on-the-fly sufficiently fast for navigation use over cellular networks. Real world entities such as pedestrians or public transportation can be tracked and presented in a scalable manner. Mobile 3D maps are useful for navigation, but their usability depends highly on interaction methods - the potentially intuitive representation does not imply, for example, faster navigation than with a professional 2D street map. In addition, the physical interface limits the usability

Focal Spot, Fall/Winter 1998

https://digitalcommons.wustl.edu/focal_spot_archives/1080/thumbnail.jp

The Legacy, October 6, 2010

Student Newspaper of Lindenwood Universityhttps://digitalcommons.lindenwood.edu/legacy/1063/thumbnail.jp

LLUSD Articulator - Volume 27, Number 2

Contents: 4 | Dean\u27s message6 | Communication Survey analyzed14 | Terry Tanaka retires17 | I\u27ve lived on the mother side 20 | LLUSD\u27s 60th conferring of degrees30 | Mechano-transduction of OOER40 | Chen introduces China to Zirconia crowns46 | Tom Rogers: surfer, humanitarian, lifelong learner48 | NEWS56 | A tent in the Kalaharihttps://scholarsrepository.llu.edu/articulator/1011/thumbnail.jp

ENIGMA and global neuroscience: A decade of large-scale studies of the brain in health and disease across more than 40 countries.

This review summarizes the last decade of work by the ENIGMA (Enhancing NeuroImaging Genetics through Meta Analysis) Consortium, a global alliance of over 1400 scientists across 43 countries, studying the human brain in health and disease. Building on large-scale genetic studies that discovered the first robustly replicated genetic loci associated with brain metrics, ENIGMA has diversified into over 50 working groups (WGs), pooling worldwide data and expertise to answer fundamental questions in neuroscience, psychiatry, neurology, and genetics. Most ENIGMA WGs focus on specific psychiatric and neurological conditions, other WGs study normal variation due to sex and gender differences, or development and aging; still other WGs develop methodological pipelines and tools to facilitate harmonized analyses of "big data" (i.e., genetic and epigenetic data, multimodal MRI, and electroencephalography data). These international efforts have yielded the largest neuroimaging studies to date in schizophrenia, bipolar disorder, major depressive disorder, post-traumatic stress disorder, substance use disorders, obsessive-compulsive disorder, attention-deficit/hyperactivity disorder, autism spectrum disorders, epilepsy, and 22q11.2 deletion syndrome. More recent ENIGMA WGs have formed to study anxiety disorders, suicidal thoughts and behavior, sleep and insomnia, eating disorders, irritability, brain injury, antisocial personality and conduct disorder, and dissociative identity disorder. Here, we summarize the first decade of ENIGMA's activities and ongoing projects, and describe the successes and challenges encountered along the way. We highlight the advantages of collaborative large-scale coordinated data analyses for testing reproducibility and robustness of findings, offering the opportunity to identify brain systems involved in clinical syndromes across diverse samples and associated genetic, environmental, demographic, cognitive, and psychosocial factors

Performance of steel structures subjected to fire following earthquake

Includes bibliographical references.2016 Summer.Fires following earthquakes are considered sequential hazards that may occur in metropolitans with moderate-to-highly seismicity. The potential for fire ignition is elevated by various factors including damage to active and passive fire protections following a strong ground motion. In addition, damage imposed by an earthquake to transportation networks, water supply, and communication systems, could hinder the response of fire departments to the post-earthquake fire events. In addition, the simultaneous ignitions – caused by strong earthquake – might turn to mass conflagrations in the shaken area, which could lead to catastrophic scenarios including structural collapse, hazardous materials release, loss of life, and the inability to provide the emergency medical need. This has been demonstrated through various historical events including the fires following the 1906 San Francisco earthquake and the 1995 Kobe earthquakes, among others, making fire following earthquake the most dominant contributor to earthquake-induced losses in properties and lives in the United States and Japan in the last century. From a design perspective, current performance-based earthquake design philosophy allows certain degrees of damage in the structural and non-structural members of steel-framed buildings during the earthquake. The cumulative structural damages, caused by the earthquake, can reduce the load-bearing capacity of structural members in a typical steel building. In addition, potential damage to active and passive fire protections following an earthquake leaves the steel material exposed to elevated temperatures in the case of post-earthquake fire events. The combined damage to steel members and components following an earthquake combined with damage to fire protection systems can increase the vulnerability of steel buildings to withstand fire following seismic events. Therefore, there is a pressing need to quantify the performance of steel structures under fire following earthquake in moderate-to-high seismic regions. The aim of the study is to assess the performance of steel structural members and systems under the cascading hazards of earthquake and fire. The research commences with evaluation of the stability of hot-rolled W-shape steel columns subjected to the earthquake-induced lateral deformations followed by fire loads. Based on the stability analyses, equations are proposed to predict the elastic and inelastic buckling stresses in steel columns exposed to the fire following earthquake, considering a wide variety of variables. The performance of three steel moment-resisting frames – with 3, 9, and 20 stories – with reduced beam section connections is assessed under multi-story fires following a suite of earthquake records. The response of structural components – beams, columns, and critical connection details – is investigated to evaluate the demand and system-level instability under fire following earthquake. Next, a performance-based framework is established for probabilistic assessment of steel structural members and systems under the combined events of earthquake and fire. A stochastic model of the effective random variables is utilized for conducting the probabilistic performance-based analysis. This framework allows structural engineers to generate fragility of steel columns and frames under multiple-hazard of earthquake and fire. The results demonstrate that instability can be a major concern in steel structures, both on the member and system levels, under the sequential events and highlights the need to develop provisions for the design of steel structures subjected to fire following earthquake. Furthermore, a suite of recommendations is proposed for future studies based on findings in this dissertation

Communications mode(l)s and disasters: from word of mouth to ICTs

Information and communication technologies present significant advances in spatially-related information and communication systems. They may greatly enhance disaster prevention and crisis management. However, the ways by which ICTs culturally affect people-environment relations (hazard perception, citizen preparedness, relief, recovery, and resilience) have not been sufficiently investigated. This paper attempts to compare people's behaviour when coping with hazards and disasters along three ages: oral word, mass media mediation, and ICTs mediation. The paper then presents an overarching model of coping with disasters and guidelines for ICT uses in a full disaster cycle. L'évolution des technologies de l'information et de la communication a permis des avancées significatives dans le domaine de l'information géographique. Désormais, les TIC sont convoquées dans la prévention des catastrophes et la gestion des crises. Malgré tout, leurs effets restent peu étudiés, en particulier pour ce qui concerne la perception du danger, la préparation des citoyens, l'organisation des secours… Cet article tente de comparer le comportement des individus face aux dangers et catastrophes en interrogeant trois moyens d'alerte et de prévention : le bouche à oreille, les mass-medias, et le numérique. Au final, nous développons un modèle général de gestion des crises par les TIC

ENIGMA and global neuroscience: A decade of large-scale studies of the brain in health and disease across more than 40 countries

This review summarizes the last decade of work by the ENIGMA (Enhancing NeuroImaging Genetics through Meta Analysis) Consortium, a global alliance of over 1400 scientists across 43 countries, studying the human brain in health and disease. Building on large-scale genetic studies that discovered the first robustly replicated genetic loci associated with brain metrics, ENIGMA has diversified into over 50 working groups (WGs), pooling worldwide data and expertise to answer fundamental questions in neuroscience, psychiatry, neurology, and genetics. Most ENIGMA WGs focus on specific psychiatric and neurological conditions, other WGs study normal variation due to sex and gender differences, or development and aging; still other WGs develop methodological pipelines and tools to facilitate harmonized analyses of "big data" (i.e., genetic and epigenetic data, multimodal MRI, and electroencephalography data). These international efforts have yielded the largest neuroimaging studies to date in schizophrenia, bipolar disorder, major depressive disorder, post-traumatic stress disorder, substance use disorders, obsessive-compulsive disorder, attention-deficit/hyperactivity disorder, autism spectrum disorders, epilepsy, and 22q11.2 deletion syndrome. More recent ENIGMA WGs have formed to study anxiety disorders, suicidal thoughts and behavior, sleep and insomnia, eating disorders, irritability, brain injury, antisocial personality and conduct disorder, and dissociative identity disorder. Here, we summarize the first decade of ENIGMA's activities and ongoing projects, and describe the successes and challenges encountered along the way. We highlight the advantages of collaborative large-scale coordinated data analyses for testing reproducibility and robustness of findings, offering the opportunity to identify brain systems involved in clinical syndromes across diverse samples and associated genetic, environmental, demographic, cognitive, and psychosocial factors