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https://www.readbyqxmd.com/read/28623099/consensus-statement-on-definitions-and-nomenclature-for-robotic-thoracic-surgery
#1
Robert Cerfolio, Brian E Louie, Alexander S Farivar, Mark Onaitis, Bernard J Park
OBJECTIVES: Robotic thoracic operations are increasing, and new robotic systems are imminent. A definition of what constitutes a robotic thoracic operation and a nomenclature to detail the technique used is needed to accurately compare outcomes. METHODS: The American Association of Thoracic Surgeons Guideline Committee appointed an expert consensus writing committee to construct definitions and nomenclature for robotic thoracic surgery. A PubMed search was generated and after vetting and review of the literature a consensus statement was reached...
May 23, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28613444/interindividual-differences-in-embodied-marginalization-osteological-and-stable-isotope-analyses-of-antebellum-enslaved-individuals
#2
Sophia C Dent
OBJECTIVES: Through pathological and stable isotope analyses, this study probes the stressors, disease ecology, and diets of enslaved individuals from an antebellum plantation cemetery. The study aims to highlight how interindividual isotopic differences reveal that marginalization is not uniformly experienced or embodied. METHODS: The cemetery population consists of 16 individuals; dental and skeletal pathological indicators were collected for all individuals, and light stable isotope ratios (δ(15) N, δ(13) C) were generated from the collagen and hydroxyapatite of nine individuals...
June 14, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28612479/open-water-and-under-ice-seasonal-variations-in-trace-element-content-and-physicochemical-associations-in-fluvial-bed-sediment
#3
Lorne E Doig, Meghan K Carr, Anna G N Meissner, Tim D Jardine, Paul D Jones, Lalita Bharadwaj, Karl-Erich Lindenschmidt
Across the circumpolar world, intensive anthropogenic activities in the southern reaches of many large, northward-flowing rivers can cause sediment contamination in the downstream depositional environment. The influence of ice cover on concentrations of inorganic contaminants in bed sediment (i.e., sediment quality) is unknown in these rivers where winter is the dominant season. A Geomorphic Response Unit (GRU) approach was used to select hydraulically-diverse sampling sites across a northern test-case system, the Slave River and Delta, NT, Canada...
June 13, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28603444/the-art-of-living-with-nzt-and-ict-dialectics-of-an-artistic-case-study
#4
EDITORIAL
Hub Zwart
I wholeheartedly sympathize conceptually with Coeckelbergh's paper. The dialectical relationship between vulnerability and technology constitutes the core of Hegel's Master and Slave (the primal scene of contemporary philosophy). Yet, the empirical dimension is underdeveloped and Coeckelbergh's ideas could profit from exposure to case studies. Building on a movie/novel (Limitless) devoted to vulnerability coping and living with ICT, I challenge the claim that modern heroism entails overcoming vulnerability with the help of enhancement and computers...
2017: Foundations of Science
https://www.readbyqxmd.com/read/28600976/master-slave-exponential-synchronization-of-delayed-complex-valued-memristor-based-neural-networks-via-impulsive-control
#5
Xiaofan Li, Jian-An Fang, Huiyuan Li
This paper investigates master-slave exponential synchronization for a class of complex-valued memristor-based neural networks with time-varying delays via discontinuous impulsive control. Firstly, the master and slave complex-valued memristor-based neural networks with time-varying delays are translated to two real-valued memristor-based neural networks. Secondly, an impulsive control law is constructed and utilized to guarantee master-slave exponential synchronization of the neural networks. Thirdly, the master-slave synchronization problems are transformed into the stability problems of the master-slave error system...
May 25, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28600265/multilateral-telecoordinated-control-of-multiple-robots-with-uncertain-kinematics
#6
Di-Hua Zhai, Yuanqing Xia
This paper addresses the telecoordinated control of multiple robots in the simultaneous presence of asymmetric time-varying delays, nonpassive external forces, and uncertain kinematics/dynamics. To achieve the control objective, a neuroadaptive controller with utilizing prescribed performance control and switching control technique is developed, where the basic idea is to employ the concept of motion synchronization in each pair of master-slave robots and among all slave robots. By using the multiple Lyapunov-Krasovskii functionals method, the state-independent input-to-output practical stability of the closed-loop system is established...
June 6, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28591371/-food-insecurity-in-rural-communities-in-northeast-brazil-does-belonging-to-a-slave-descendent-community-make-a-difference
#7
Etna Kaliane Pereira da Silva, Danielle Souto de Medeiros, Poliana Cardoso Martins, Líllian de Almeida Sousa, Gislane Pereira Lima, Maria Amanda Sousa Rêgo, Tainan Oliveira da Silva, Alessandra Silva Freire, Fernanda Moitinho Silva
This study aimed to measure the prevalence of food insecurity in a rural area of Northeast Brazil and investigate this outcome according to residence in quilombola communities (descendants of African slaves) versus non-quilombola communities. This was a cross-sectional study in 21 rural communities, 9 of which quilombolas, in 2014, using the Brazilian Food Insecurity Scale (EBIA). Prevalence rates and prevalence ratios were estimated for food insecurity, and Poisson multiple regression analysis with robust variance was performed...
June 1, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28583735/electromagnetic-tracking-of-flexible-robotic-catheters-enables-assisted-navigation-and-brings-automation-to-endovascular-navigation-in-an-in-vitro-study
#8
Adeline Schwein, Benjamin Kramer, Ponraj Chinnadurai, Neha Virmani, Sean Walker, Marcia O'Malley, Alan B Lumsden, Jean Bismuth
OBJECTIVE: Combining three-dimensional (3D) catheter control with electromagnetic (EM) tracking-based navigation significantly reduced fluoroscopy time and improved robotic catheter movement quality in a previous in vitro pilot study. The aim of this study was to expound on previous results and to expand the value of EM tracking with a novel feature, assistednavigation, allowing automatic catheter orientation and semiautomatic vessel cannulation. METHODS: Eighteen users navigated a robotic catheter in an aortic aneurysm phantom using an EM guidewire and a modified 9F robotic catheter with EM sensors at the tip of both leader and sheath...
June 2, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28583349/design-and-implementation-of-ep-based-pid-controller-for-chaos-synchronization-of-rikitake-circuit-systems
#9
Yi-You Hou
This article addresses an evolutionary programming (EP) algorithm technique-based and proportional-integral-derivative (PID) control methods are established to guarantee synchronization of the master and slave Rikitake chaotic systems. For PID synchronous control, the evolutionary programming (EP) algorithm is used to find the optimal PID controller parameters kp, ki, kd by integrated absolute error (IAE) method for the convergence conditions. In order to verify the system performance, the basic electronic components containing operational amplifiers (OPAs), resistors, and capacitors are used to implement the proposed chaotic Rikitake systems...
June 2, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28569367/resonance-modulation-annihilation-and-generation-of-anti-resonance-and-anti-phasonance-in-3d-neuronal-systems-interplay-of-resonant-and-amplifying-currents-with-slow-dynamics
#10
Horacio G Rotstein
Subthreshold (membrane potential) resonance and phasonance (preferred amplitude and zero-phase responses to oscillatory inputs) in single neurons arise from the interaction between positive and negative feedback effects provided by relatively fast amplifying currents and slower resonant currents. In 2D neuronal systems, amplifying currents are required to be slave to voltage (instantaneously fast) for these phenomena to occur. In higher dimensional systems, additional currents operating at various effective time scales may modulate and annihilate existing resonances and generate antiresonance (minimum amplitude response) and antiphasonance (zero-phase response with phase monotonic properties opposite to phasonance)...
May 31, 2017: Journal of Computational Neuroscience
https://www.readbyqxmd.com/read/28529233/the-medicinal-rod-slave-health-and-redhibition-law-in-george-washington-cable-s-i-the-grandissimes-i
#11
Heather Chacón
The economic transactions and litigation necessary for slavery to function, coupled with the South's honor culture, meant skepticism and posturing frequently attended the buying and selling of enslaved people. This atmosphere provided opportunities for enslaved individuals familiar with the symbiotic ways their health and value intertwined to manipulate owners by feigning illness or adopting behaviors contrary to those of a "sound and sane" captive under Louisiana's redhibitory (slave warranty) law. Such actions offered a chance at preserving that which slavery denied its victims: proximity to family, a reduced chance of being sold, and an opportunity to exert agency within a strictly oppressive system...
2017: Literature and Medicine
https://www.readbyqxmd.com/read/28527449/correlated-matrix-fluctuation-mediated-activated-transport-of-dilute-penetrants-in-glass-forming-liquids-and-suspensions
#12
Rui Zhang, Kenneth S Schweizer
We formulate a microscopic, force-level statistical mechanical theory for the activated diffusion of dilute penetrants in dense liquids, colloidal suspensions, and glasses. The approach explicitly and self-consistently accounts for coupling between penetrant hopping and matrix dynamic displacements that actively facilitate the hopping event. The key new ideas involve two mechanistically (at a stochastic trajectory level) coupled dynamic free energy functions for the matrix and spherical penetrant particles...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28513375/helping-victims-of-modern-slavery
#13
Louise Cahill
I was volunteering at a refugee centre when a woman told me she was the happiest she could remember being. She said she had previously been a slave, and no matter how bad I thought her situation was now, it was always better than her past.
May 17, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28513095/research-of-the-master-slave-robot-surgical-system-with-the-function-of-force-feedback
#14
Yunyong Shi, Chaozheng Zhou, Le Xie, Yongjun Chen, Jun Jiang, Zhenfeng Zhang, Ze Deng
BACKGROUND: Surgical robots lack force feedback, which may lead to operation errors. In order to improve surgical outcomes, this research developed a new master-slave surgical robot, which was designed with an integrated force sensor. METHODS: The new structure designed for the master-slave robot employs a force feedback mechanism. A six-dimensional force sensor was mounted on the tip of the slave robot's actuator. Sliding model control was adopted to control the slave robot...
May 17, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28511559/migrating-microbes-what-pathogens-can-tell-us-about-population-movements-and-human-evolution
#15
Charlotte J Houldcroft, Jean-Baptiste Ramond, Riaan F Rifkin, Simon J Underdown
BACKGROUND: The biology of human migration can be observed from the co-evolutionary relationship with infectious diseases. While many pathogens are brief, unpleasant visitors to human bodies, others have the ability to become life-long human passengers. The story of a pathogen's genetic code may, therefore, provide insight into the history of its human host. The evolution and distribution of disease in Africa is of particular interest, because of the deep history of human evolution in Africa, the presence of a variety of non-human primates, and tropical reservoirs of emerging infectious diseases...
May 16, 2017: Annals of Human Biology
https://www.readbyqxmd.com/read/28509947/-arboviruses-also-have-an-american-dream
#16
F Rodhain
Some arboviruses that originated in the Old World have been introduced by humans into the American continent. The first of them was the yellow fever virus, coming from the West African coast with slaves in the 17th-19th centuries, followed by dengue viruses, which were always prevalent within the Americas. Next was theWest Nile virus, introduced in New York in 1999, that spread in only a few years over the whole continent. Then, Chikungunya virus arrived on Saint Martin Island in 2013 after its outbreak in Polynesia; it is now widespread in the Caribbean Islands and on the American continent from the United States to Brazil...
May 16, 2017: Bulletin de la Société de Pathologie Exotique
https://www.readbyqxmd.com/read/28504952/exponential-synchronization-of-networked-chaotic-delayed-neural-network-by-a-hybrid-event-trigger-scheme
#17
Zhongyang Fei, Chaoxu Guan, Huijun Gao
This paper is concerned with the exponential synchronization for master-slave chaotic delayed neural network with event trigger control scheme. The model is established on a network control framework, where both external disturbance and network-induced delay are taken into consideration. The desired aim is to synchronize the master and slave systems with limited communication capacity and network bandwidth. In order to save the network resource, we adopt a hybrid event trigger approach, which not only reduces the data package sending out, but also gets rid of the Zeno phenomenon...
May 12, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28498709/topological-magnon-bands-and-unconventional-superconductivity-in-pyrochlore-iridate-thin-films
#18
Pontus Laurell, Gregory A Fiete
We theoretically study the magnetic properties of pyrochlore iridate bilayer and trilayer thin films grown along the [111] direction using a strong coupling approach. We find the ground state magnetic configurations on a mean field level and carry out a spin-wave analysis about them. In the trilayer case the ground state is found to be the all-in-all-out (AIAO) state, whereas the bilayer has a deformed AIAO state. For all parameters of the spin-orbit coupled Hamiltonian we study, the lowest magnon band in the trilayer case has a nonzero Chern number...
April 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28492035/the-german-experiment-health-care-without-female-or-jewish-doctors
#19
Alexa R Shipman
Jewish and female doctors were not allowed to practice medicine in Germany during Hitler's rule from 1933 to 1945. Data about the consequences of this on the health service are difficult to come by, but what information can be gathered demonstrates a detrimental effect on the nation's health. These data, however, must be interpreted with consideration to the morbidity and mortality from violence, death camps, slave labor, and the privations of war. The article summarizes the history of German health care during this period and also compares Germany to other nations at that time...
March 2017: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/28486405/compensation-of-pvt-variations-in-tof-imagers-with-in-pixel-tdc
#20
Ion Vornicu, Ricardo Carmona-Galán, Ángel Rodríguez-Vázquez
The design of a direct time-of-flight complementary metal-oxide-semiconductor (CMOS) image sensor (dToF-CIS) based on a single-photon avalanche-diode (SPAD) array with an in-pixel time-to-digital converter (TDC) must contemplate system-level aspects that affect its overall performance. This paper provides a detailed analysis of the impact of process parameters, voltage supply, and temperature (PVT) variations on the time bin of the TDC array. Moreover, the design and characterization of a global compensation loop is presented...
May 9, 2017: Sensors
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