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https://www.readbyqxmd.com/read/28646764/adaptive-near-optimal-neuro-controller-for-continuous-time-nonaffine-nonlinear-systems-with-constrained-input
#1
Kasra Esfandiari, Farzaneh Abdollahi, Heidar Ali Talebi
In this paper, an identifier-critic structure is introduced to find an online near-optimal controller for continuous-time nonaffine nonlinear systems having saturated control signal. By employing two Neural Networks (NNs), the solution of Hamilton-Jacobi-Bellman (HJB) equation associated with the cost function is derived without requiring a priori knowledge about system dynamics. Weights of the identifier and critic NNs are tuned online and simultaneously such that unknown terms are approximated accurately and the control signal is kept between the saturation bounds...
June 21, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28646660/towards-understanding-transcriptional-networks-in-cellular-reprogramming
#2
REVIEW
Jaber Firas, Jose M Polo
Most of the knowledge we have on the molecular mechanisms of transcription factor mediated reprogramming comes from studies conducted in induced pluripotency. Recently however, a few studies investigated the mechanisms of cellular reprogramming in direct and indirect transdifferentiation, which allows us to explore whether shared parallel mechanisms can be drawn. Moreover, there are currently several computational tools that have been developed to predict and enhance the reprogramming process by reconstructing the transcriptional networks of reprogramming cells...
June 21, 2017: Current Opinion in Genetics & Development
https://www.readbyqxmd.com/read/28646471/decoding-early-myelopoiesis-from-dynamics-of-core-endogenous-network
#3
Hang Su, Gaowei Wang, Ruoshi Yuan, Junqiang Wang, Ying Tang, Ping Ao, Xiaomei Zhu
A decade ago mainstream molecular biologists regarded it impossible or biologically ill-motivated to understand the dynamics of complex biological phenomena, such as cancer genesis and progression, from a network perspective. Indeed, there are numerical difficulties even for those who were determined to explore along this direction. Undeterred, seven years ago a group of Chinese scientists started a program aiming to obtain quantitative connections between tumors and network dynamics. Many interesting results have been obtained...
May 29, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28645231/evolution-of-hormone-signaling-networks-in-plant-defense
#4
Matthias L Berens, Hannah M Berry, Akira Mine, Cristiana T Argueso, Kenichi Tsuda
Studies with model plants such as Arabidopsis thaliana have revealed that phytohormones are central regulators of plant defense. The intricate network of phytohormone signaling pathways enables plants to activate appropriate and effective defense responses against pathogens as well as to balance defense and growth. The timing of the evolution of most phytohormone signaling pathways seems to coincide with the colonization of land, a likely requirement for plant adaptations to the more variable terrestrial environments, which included the presence of pathogens...
June 23, 2017: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/28645217/microtubule-organizing-centers
#5
Jingchao Wu, Anna Akhmanova
The organization of microtubule networks is crucial for controlling chromosome segregation during cell division, positioning, and transport of different organelles and for cell polarity and morphogenesis. The geometry of microtubule arrays strongly depends on the localization and activity of the sites where microtubules are nucleated and where their minus ends are anchored. Such sites are often clustered into structures known as microtubule-organizing centers, which include the centrosomes in animals and spindle pole bodies in fungi...
June 23, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28644902/sirt6-alters-adult-hippocampal-neurogenesis
#6
Eitan Okun, Daniel Marton, Daniel Cohen, Kathleen Griffioen, Yariv Kanfi, Tomer Illouz, Ravit Madar, Haim Y Cohen
Sirtuins are pleiotropic NAD+ dependent histone deacetylases involved in metabolism, DNA damage repair, inflammation and stress resistance. SIRT6, a member of the sirtuin family, regulates the process of normal aging and increases the lifespan of male mice over-expressing Sirt6 by 15%. Neurogenesis, the formation of new neurons within the hippocampus of adult mammals, involves several complex stages including stem cell proliferation, differentiation, migration and network integration. During aging, the number of newly generated neurons continuously declines, and this is correlated with a decline in neuronal plasticity and cognitive behavior...
2017: PloS One
https://www.readbyqxmd.com/read/28643527/supporting-occupational-therapists-implementing-a-capacity-building-model-in-schools
#7
Nancy A Pollock, Leah Dix, Sandra Sahagian Whalen, Wenonah N Campbell, Cheryl A Missiuna
BACKGROUND: Adopting a new model of clinical practice is complex. Professional development programs based on best-practice principles may facilitate this process. PURPOSE: This paper describes the development and evaluation of a multifaceted professional development program designed to support school-based occupational therapists to deliver a capacity-building model of service. METHOD: Twenty-two therapists participated in the program; completed pre-post evaluations of knowledge, skills, and beliefs; evaluated specific components of the training program; and participated in focus groups...
January 1, 2017: Canadian Journal of Occupational Therapy. Revue Canadienne D'ergothérapie
https://www.readbyqxmd.com/read/28643399/distributed-health-literacy-among-people-living-with-type-2-diabetes-in-portugal-defining-levels-of-awareness-and-support
#8
Liliana Abreu, João Arriscado Nunes, Peter Taylor, Susana Silva
This study embraces a patient-centred and narrative-oriented notion of health literacy, exploring how social networks and personal experiences constitute distributed health literacy (DHL) by mapping out health literacy mediators of each individual and how they enable self-management skills and knowledge of health conditions. Semi-structured interviews with 26 patients with type 2 diabetes were conducted in a Primary Care Center of Porto (Portugal) from October 2014 to December 2015. Data were collected based on McGill Illness Narrative Interview (MINI)...
June 22, 2017: Health & Social Care in the Community
https://www.readbyqxmd.com/read/28643241/socio-demographic-characteristics-sexual-and-test-seeking-behaviours-amongst-men-who-have-sex-with-both-men-and-women-results-from-a-bio-behavioural-survey-in-13-european-cities
#9
Massimo Mirandola, Lorenzo Gios, Nigel Sherriff, John Pachankis, Igor Toskin, Laia Ferrer, Sónia Dias, Inga Velicko, Danica Staneková, Saulius Caplinskas, Emilia Naseva, Marta Niedźwiedzka-Stadnik
Within the MSM population, men who have sex with both men and women (MSMW) are identified as a high-risk group both worldwide and in Europe. In a multi-centred bio-behavioural cross-sectional study, we aimed to assess the relationship(s) between socio-demographic factors, stigma, sexual behavioural patterns, test seeking behaviour and sero-status amongst MSMW. A multi-level analysis was conducted to identify factors associated with being MSMW versus Men who have Sex with Men Only (MSMO). A total of 4901 MSM were enrolled across the 13 study sites...
June 22, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28643166/structural-disorder-in-plant-proteins-where-plasticity-meets-sessility
#10
REVIEW
Alejandra A Covarrubias, Cesar L Cuevas-Velazquez, Paulette S Romero-Pérez, David F Rendón-Luna, Caspar C C Chater
Plants are sessile organisms. This intriguing nature provokes the question of how they survive despite the continual perturbations caused by their constantly changing environment. The large amount of knowledge accumulated to date demonstrates the fascinating dynamic and plastic mechanisms, which underpin the diverse strategies selected in plants in response to the fluctuating environment. This phenotypic plasticity requires an efficient integration of external cues to their growth and developmental programs that can only be achieved through the dynamic and interactive coordination of various signaling networks...
June 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28642878/the-complexity-of-zoonotic-filariasis-episystem-and-its-consequences-a-multidisciplinary-view
#11
REVIEW
Fernando Simón, Javier González-Miguel, Alicia Diosdado, Paula Josefina Gómez, Rodrigo Morchón, Vladimir Kartashev
Vector-borne transmitted helminthic zoonosis affects the health and economy of both developing and developed countries. The concept of episystem includes the set of biological, environmental, and epidemiological elements of these diseases in defined geographic and temporal scales. Dirofilariasis caused by different species of the genus Dirofilaria is a disease affecting domestic and wild canines and felines and man, transmitted by different species of culicid mosquitoes. This complexity is increased because Dirofilaria species harbor intracellular symbiont Wolbachia bacteriae, which play a key role in the embryogenesis and development of dirofilariae and in the inflammatory pathology of the disease...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28642116/contrast-induced-nephropathy-basic-concepts-pathophysiological-implications-and-prevention-strategies
#12
REVIEW
Charalampos Mamoulakis, Konstantinos Tsarouhas, Irini Fragkiadoulaki, Ioannis Heretis, Martin F Wilks, Demetrios A Spandidos, Christina Tsitsimpikou, Aristides Tsatsakis
Contrast-induced nephropathy (CIN) is reversible acute renal failure observed following administration of iodinated contrast media (CM) during angiographic or other medical procedures such as urography. There are various mechanisms through which CM develop their nephrotoxic effects, including oxidative stress and apoptosis. CIN is a real-life, albeit not very rare, entity. Exact pathophysiology remains obscure and no standard diagnostic criteria apply. The Acute Kidney Injury Network criteria was recently employed but its incidence/clinical significance warrants further clarification based on recent methodological advancements, because most published studies to date were contaminated by bias...
June 19, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28642027/-monitoring-devices-and-their-alarms-incident-reports-suggest-problems-with-device-knowledge
#13
Kathrin Lange, Miriam Nowak, Claudia Neudörfl, Wolfgang Lauer
Missing or false device alarms pose a risk in clinical practice. Publications from the United States suggest that alarm errors are not only caused by technical issues but to a considerable degree result from user-device interaction problems. To safely operate a medical device, users have to thoroughly understand both device behavior and device functioning. They also need to foresee the exact consequences of their interactions with the device. This can be challenging, especially if a device has multiple functions, is applied in various use contexts or networked with other devices - as is often the case with patient monitors...
June 19, 2017: Zeitschrift Für Evidenz, Fortbildung und Qualität Im Gesundheitswesen
https://www.readbyqxmd.com/read/28641275/a-case-series-of-surgically-diagnosed-idiopathic-aortitis-in-a-canadian-centre-a-retrospective-study
#14
Diane L Murzin, Eric C Belanger, John P Veinot, Nataliya Milman
BACKGROUND: Idiopathic aortitis became recognized relatively recently, and the body of knowledge concerning this condition is scarce. We aimed to determine the frequency of idiopathic aortitis in aortic specimens, the clinical, laboratory and radiologic characteristics at diagnosis and during follow-up, and the approach to investigation, treatment and monitoring taken by the treating physicians. METHODS: We identified cases of aortitis diagnosed on pathological specimens of the aorta between Jan...
June 19, 2017: CMAJ Open
https://www.readbyqxmd.com/read/28641263/radian-visual-exploration-of-traceroutes
#15
Massimo Candela, Marco Di Bartolomeo, Giuseppe Di Battista, Claudio Squarcella
Several projects deploy probes in the Internet. Probes are systems that continuously perform traceroutes and other networking measurements (e.g. ping) towards selected targets. Measurements can be stored and analyzed to gain knowledge on several aspects of the Internet, but making sense of such data requires suitable methods and tools for exploration and visualization. We present Radian, a tool that allows to visualize traceroute paths at different levels of detail and to animate their evolution during a selected time interval...
June 19, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28640810/lassim-a-network-inference-toolbox-for-genome-wide-mechanistic-modeling
#16
Rasmus Magnusson, Guido Pio Mariotti, Mattias Köpsén, William Lövfors, Danuta R Gawel, Rebecka Jörnsten, Jörg Linde, Torbjörn Nordling, Elin Nyman, Sylvie Schulze, Colm E Nestor, Huan Zhang, Gunnar Cedersund, Mikael Benson, Andreas Tjärnberg, Mika Gustafsson
Recent technological advancements have made time-resolved, quantitative, multi-omics data available for many model systems, which could be integrated for systems pharmacokinetic use. Here, we present large-scale simulation modeling (LASSIM), which is a novel mathematical tool for performing large-scale inference using mechanistically defined ordinary differential equations (ODE) for gene regulatory networks (GRNs). LASSIM integrates structural knowledge about regulatory interactions and non-linear equations with multiple steady state and dynamic response expression datasets...
June 22, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28640543/evolutionary-optimized-photonic-network-structure-in-white-beetle-wing-scales
#17
Bodo D Wilts, Xiaoyuan Sheng, Mirko Holler, Ana Diaz, Manuel Guizar-Sicairos, Jörg Raabe, Robert Hoppe, Shu-Hao Liu, Richard Langford, Olimpia D Onelli, Duyu Chen, Salvatore Torquato, Ullrich Steiner, Christian G Schroer, Silvia Vignolini, Alessandro Sepe
Most studies of structural color in nature concern periodic arrays, which through the interference of light create color. The "color" white however relies on the multiple scattering of light within a randomly structured medium, which randomizes the direction and phase of incident light. Opaque white materials therefore must be much thicker than periodic structures. It is known that flying insects create "white" in extremely thin layers. This raises the question, whether evolution has optimized the wing scale morphology for white reflection at a minimum material use...
June 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28640249/mybl2-b-myb-a-central-regulator-of-cell-proliferation-cell-survival-and-differentiation-involved-in-tumorigenesis
#18
REVIEW
Julian Musa, Marie-Ming Aynaud, Olivier Mirabeau, Olivier Delattre, Thomas Gp Grünewald
Limitless cell proliferation, evasion from apoptosis, dedifferentiation, metastatic spread and therapy resistance: all these properties of a cancer cell contribute to its malignant phenotype and affect patient outcome. MYBL2 (alias B-Myb) is a transcription factor of the MYB transcription factor family and a physiological regulator of cell cycle progression, cell survival and cell differentiation. When deregulated in cancer cells, MYBL2 mediates the deregulation of these properties. In fact, MYBL2 is overexpressed and associated with poor patient outcome in numerous cancer entities...
June 22, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28639546/leadership-perspective-bringing-nursing-back-to-the-future-through-people-powered-care
#19
Shirlee Sharkey, Nancy Lefebre
At a time when there is a growing interest in person- and family-centred care and integrated community-based models, the unique strengths and expertise of home care nursing is a strategic lever for change across all healthcare settings. In this paper, we explore the theme of people-powered care as a universal starting point - a new approach to health and wellness that is anchored in the strengths of people, their networks and the patterns of everyday life. Leveraging key insights from home and community care, along with broader societal shifts towards personalization and empowerment, we discuss how nurses in all areas of the system can lead the way by empowering staff, patients and their families...
2017: Nursing Leadership
https://www.readbyqxmd.com/read/28637736/transcatheter-closure-mini-invasive-closure-and-open-heart-surgical-repair-for-treatment-of-perimembranous-ventricular-septal-defects-in-children-a-protocol-for-a-network-meta-analysis
#20
Tao You, Kang Yi, Zhao-Hong Ding, Xiao-Dong Hou, Xing-Guang Liu, Xin-Kuan Wang, Long Ge, Jin-Hui Tian
INTRODUCTION: Both transcatheter device closure and surgical repair are effective treatments with excellent midterm outcomes for perimembranous ventricular septal defects (pmVSDs) in children. The mini-invasive periventricular device occlusion technique has become prevalent in research and application, but evidence is limited for the assessment of transcatheter closure, mini-invasive closure and open-heart surgical repair. This study comprehensively compares the efficacy, safety and costs of transcatheter closure, mini-invasive closure and open-heart surgical repair for treatment of pmVSDs in children using Bayesian network meta-analysis...
June 21, 2017: BMJ Open
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